JP2012039832A - Energy management system and energy management method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an energy management system capable of switching between on-off timer control and immediate switching of on-off control of a charging outlet of an electric vehicle with an easy remote control by equipment for remote control.SOLUTION: An energy management system S includes: an EV outlet 4 for charging a battery of an electric vehicle; a relay 31 that performs energization control to the EV outlet 4; a monitor 2 that is installed at a position remote from the EV outlet 4 and selects a charging mode of the electric vehicle by a user's operation; and a home server 1 that transmits an energization start signal or energization stop signal to the relay 31 based on a charging mode selected by the monitor 2. The monitor 2 enables selection between an automatic charging mode that performs charging in a prescribed charging time zone defined as a charging start time and a charging finish time and a manual charging mode that starts immediate charging when a charging start is designated.

Description

  The present invention relates to an energy management system and an energy management method, and more particularly to an energy management system and an energy management method capable of managing energy consumption of a house equipped with an electric vehicle charging facility using a household power source.

  In recent years, electric vehicles and plug-in hybrid vehicles have been put into practical use as measures for reducing carbon dioxide emissions against the background of environmental problems such as global warming. Such an electric vehicle can be charged from a household power source to a battery, and energy costs can be reduced by charging at night using inexpensive nighttime power.

  Charging from the household power source of the electric vehicle is performed by connecting the charging cable to an outdoor household power source (100V or 200V outlet), and therefore, charging is performed only when the cable is connected to the outlet. Therefore, if you want to control charging at a predetermined time, such as charging at night power hours, install a business timer switch in the distribution board and set the timer switch at a preset time. By performing the on / off control, it is possible to control to charge by energizing the outlet for charging the electric vehicle only during a predetermined time period.

  However, in the on / off control using the business timer switch, it is not possible to switch on / off the outlet other than the set time, and it is not easy to change the charging time setting. That is, the outlet cannot be turned on and off immediately by a simple operation such as a button operation by the user. Furthermore, it is not possible to perform timer setting, turning on / off, and turning off by remote control from a place where a user is always present such as a living room.

  In addition, although it is conceivable to insert an outlet device with a timer (sold separately) into the outlet and turn the outlet on and off, it does not support 200V voltage or large capacity (15A to 20A) current for charging an electric vehicle. Not applicable. Further, even if it is applicable, there is a problem that control by easy operation and remote operation cannot be performed, like the above-described business timer switch.

  Therefore, a charging device is proposed that has a portable charging controller provided separately from the electric vehicle, and can be used to set or cancel the reservation of the charging start time of the electric vehicle by remote control from the charging controller. Yes. In this charging device, an ECU as a control device provided in the electric vehicle is configured to receive an instruction from a charge controller and control the start of charging of the battery based on the instruction (for example, Patent Documents). 1).

  Apart from the widespread use of electric vehicles, energy conservation is important as a response to environmental problems, and there is increasing interest in energy conservation measures in the residential sector. On the other hand, power consumption is increasing due to the increase in household appliances used in houses and the introduction of IH (Induction Heating) cooking heaters, and it is expected that the demand for energy in ordinary households will increase further in the future due to the popularization of electric vehicles. Is done.

  Normally, a distribution board in a house is equipped with an overcurrent alarm device and a load interrupt device to prevent a power outage in the building by interrupting a preset load when an overcurrent flows to the main breaker. ing. In this case, with the overcurrent prevention function, it is not possible to shut off loads other than a preset load, and when it is not desired to shut off the load, it is necessary to change the setting each time.

  Therefore, in recent years, HEMS (Home Energy) has been used as a means for networking energy consuming devices such as home appliances and hot water supply devices to display energy usage status and to automatically control each device according to energy usage status. A Management System) has been proposed. With the introduction of HEMS, it is expected to comprehensively grasp the energy demand and supply of the entire house and to realize energy saving by operating each device efficiently.

JP 2010-142026 A

However, in the technique described in Patent Document 1, the charging control of the battery is performed by the control device provided in the electric vehicle, and the charge power and the remaining amount of the battery of the electric vehicle can be confirmed using the charge controller. However, it does not perform timer control or immediate on / off control of the charging outlet on the house side. That is, it is not possible to perform the timer control and the immediate on / off control of the charging outlet on the house side by an easy operation and a remote operation.
Moreover, it cannot be determined whether or not the charging cable for the electric vehicle is connected to the outlet unless the user actually confirms it visually.

  Furthermore, although the energy management of the house by HEMS is proposed as mentioned above, the necessity of the energy management of the whole house which considered the charging energy of the electric vehicle using a household power supply is not considered. That is, there is no mechanism that allows the user to grasp the energy usage status of the entire house in addition to the charging status of the battery of the electric vehicle, and no measures are taken when the load increases in the entire house.

  Therefore, the remote control from the living room, for example, the living room, performs the timer control of the charging outlet of the electric vehicle, the immediate on / off control, the power consumption of the load equipment such as the electric equipment in the house and the charging power of the electric vehicle. In addition, it is desirable to provide a mechanism that enables comprehensive energy management and efficient operation.

The present invention has been made in view of the above problems, and its object is to charge an electric vehicle by a simple remote operation from a remote operation device in a house having an electric vehicle charging facility using a household power source. It is to provide an energy management system and an energy management method capable of switching between on / off timer control of an electrical outlet and immediate on / off control.
Another object of the present invention is to provide an energy management system and an energy management method that can adjust or cut off energy consumption of load equipment in a house and prevent a power outage of the whole house due to overcurrent. .
Furthermore, another object of the present invention is that it is possible to confirm the energy usage status of the charging power source and each load facility of the electric vehicle and the charging status of the electric vehicle (charging / stopping charging, etc.) An object of the present invention is to provide an energy management system and an energy management method capable of managing the energy use of the entire house by controlling the power consumption of the load facility.

  According to the energy management system of claim 1, the subject is a charging power source for charging a battery of an electric vehicle, energization control means for controlling energization to the charging power source, and the charging power source. A charging mode selection means for selecting a charging mode of the electric vehicle by a user operation provided at a remote location, and an energization start signal to the energization control means based on the charging mode selected by the charging mode selection means Or a main control means for transmitting an energization stop signal, wherein the charging mode selection means performs an automatic charging mode for charging in a predetermined charging time zone defined by a charging start time and a charging end time, and charging start. This is solved by the fact that it is possible to select a manual charging mode that starts immediate charging when specified.

  As described above, the charging mode selecting means is provided at a location remote from the charging power source of the electric vehicle using the household power source, and the automatic charging mode and the manual charging mode can be selected by the user operation. In addition, the charging mode can be switched by an easy operation. As the charging mode, it is possible to select a charging mode in which charging is performed during a predetermined charging time period from a charging start time to a charging end time, and a manual charging mode in which immediate charging is started when the charging start is specified. By switching, it is possible to switch between charging / discharging timer control of an electric vehicle, that is, charging outlet, and immediate on / off control.

  At this time, as in claim 2, when the automatic charging mode is selected by the charging mode selection unit, the main control unit includes the current time in the charging time zone and the battery is fully charged. If not, an energization start signal may be transmitted to the energization control means, and otherwise an energization stop signal may be transmitted to the energization control means.

  In the automatic charging mode, when the battery is not fully charged during the charging time period, the main control means transmits an energization start signal to the energization control means, thereby energizing the charging outlet. Therefore, if the charging cable is connected to the charging outlet, the electric vehicle is charged. In addition, when the battery is fully charged even outside the charging time zone or during the charging time zone, the main control means stops energization to the charging outlet by transmitting an energization stop signal to the energization control means, The electric vehicle is not charged. As described above, the charging / discharging of the electric vehicle can be automatically turned on / off (timer control) in a preset charging time zone.

  According to a third aspect of the present invention, when the manual charging mode is selected by the charging mode selection unit, the main control unit is connected to the energization control unit when receiving a charge start input from the charging mode selection unit. It is preferable to transmit an energization start signal and transmit an energization stop signal to the energization control means when the end of charging is accepted.

  In the manual charging mode, when an instruction to start charging input by a user operation is received, the main control means transmits an energization start signal to the energization control means, thereby energizing the charging outlet. Therefore, if the charging cable is connected to the charging outlet, the electric vehicle is charged. In addition, when an instruction to end charging input by a user operation is received, the main control unit transmits an energization stop signal to the energization control unit, whereby the energization to the charging outlet is stopped and the electric vehicle is charged. Absent. In this way, when a user input is performed, it is possible to immediately control on / off of the charging outlet of the electric vehicle.

  Further, according to a fourth aspect of the present invention, the apparatus includes a charging power detection unit that detects a charging power amount from the charging power source to the electric vehicle, and the main control unit is configured to detect the electric vehicle acquired from the charging power detection unit. Based on the amount of charging power, the charging mode selection means may display at least charging status including charging, stopping, and full charging.

  In this way, since the charging status of the electric vehicle can be displayed on the charging mode selection means, the user does not have to bother to check the charging status to the electric vehicle and can check it from within the house.

  Further, as in claim 5, load power detection means for detecting the power consumption amount of load equipment in a house, charge power detection means for detecting the charge power amount from the charging power source to the electric vehicle, Equipment operation control means capable of controlling the operation of the load facility, and storage means for storing the main capacity of the house, wherein the main control means is the power consumption amount of the load facility acquired from the load power detection means The charge power amount of the electric vehicle acquired from the charge power detection means and the main capacity acquired from the storage means are compared, and the total power amount of the power consumption amount of the load facility and the charge power amount of the electric vehicle is compared. When the capacity exceeds the main capacity, it is preferable to transmit an instruction signal instructing the device operation control means to perform an operation in which the load of the load facility decreases.

  In this way, when the total amount of power consumed by the load facility and the charge amount of the electric vehicle, that is, the amount of power required for the entire house exceeds the main capacity, the main control means sends the load operation to the equipment operation control means. By transmitting an instruction signal instructing to perform an operation that reduces the load, the device operation control means that receives the instruction signal performs operation control of each load facility based on the instruction, and performs an operation that reduces the load. It can be carried out. By controlling the operation of the load equipment in this way, overcurrent can be prevented in advance.

  Furthermore, as in claim 6, the main control means, when the total power amount of the power consumption amount of the load facility and the charging power amount of the electric vehicle exceeds a predetermined value based on the main capacity. It is preferable that an instruction signal for instructing to stop the operation of the load facility is transmitted to the device operation control means.

  In this way, the total amount of power consumed by the load facility and the amount of electric power charged by the electric vehicle, that is, the amount of power required for the entire house is a predetermined value based on the trunk capacity, such as a value that is 150% of the trunk capacity. When it exceeds, the main control means transmits an instruction signal instructing the equipment operation control means to instruct to stop the operation of the load facility. The equipment operation control means that has received the instruction signal stops the operation of the necessary load equipment based on the instruction, and reduces the load on the entire house. By controlling the operation of the load equipment in this way, overcurrent can be prevented in advance.

  Moreover, the said subject is the energy management method using the energy management system of Claim 1 according to the energy management method of Claim 7, Comprising: The said charge mode selection means is an automatic charge mode by user operation, and Receiving a selection of any of the manual charging modes and transmitting the selected charging mode to the main control means; the main control means receiving a charging mode from the charging mode selection means; The control means includes the step of transmitting an energization start signal or an energization stop signal to the communication control means based on the received charging mode.

  At this time, as in claim 8, when the selected charging mode is the automatic charging mode, the main control means determines whether the current time is included in the charging time zone; And a step of determining whether the battery is fully charged or not, wherein the main control means transmits an energization start signal or an energization stop signal to the communication control means. It is preferable to transmit an energization start signal when the battery is not fully charged and to transmit an energization stop signal in other cases.

  Further, as in claim 9, when the selected charging mode is a manual charging mode, the main control means includes a step of accepting charging start or charging end from the selection mode selection means, the main control means In the step of transmitting an energization start signal or an energization stop signal to the communication control means, the main control means transmits an energization start signal to the energization control means as soon as the charging start is accepted, and immediately after the end of charging is accepted. It is preferable to transmit an energization stop signal to the energization control means.

  By such control, switching between the automatic charging mode and the manual charging mode can be performed by a user's remote operation and easy operation. In addition, the charging outlet can be turned on, turned off, and immediately turned on and turned off, so that the electric vehicle can be automatically charged and immediately charged manually.

  In addition, as in claim 10, the energy management system includes a load power detection unit that detects a power consumption amount of a load facility in a house, and a charge that detects a charge power amount from the charging power source to the electric vehicle. Power detection means, device operation control means capable of controlling the operation of the load equipment, and storage means for storing the main capacity of the house, the main control means from the load power detection means of the load equipment Obtaining a power consumption amount, obtaining a charge power amount of the electric vehicle from the charge power detection means, obtaining a main capacity of a house from the storage means; and the main control means, the power consumption of the load facility A step of comparing the main capacity with a total power amount of the electric power and the charging power amount of the electric vehicle, and a total power amount of the power consumption amount of the load facility and the charging power amount of the electric vehicle When the main capacity is exceeded, the main control means includes a step of transmitting an instruction signal instructing the equipment operation control means to perform an operation in which the load of the load facility decreases. Is more preferable.

  Further, as in claim 11, when the total power amount of the power consumption amount of the load facility and the charging power amount of the electric vehicle exceeds a predetermined value based on the main capacity, the main control means The apparatus operation control means may further include a step of transmitting an instruction signal instructing to stop the operation of the load facility.

  By controlling in this way, the load of each load facility is reduced when the total amount of power consumed by the load facility and the charge energy of the electric vehicle, that is, the amount of power required for the entire house exceeds the main capacity. Such an operation control can be performed to prevent overcurrent. In addition, the total power consumption of the load facility and the charging power of the electric vehicle, that is, the amount of power required for the entire house exceeds a predetermined value based on the main capacity, for example, 150% of the main capacity. In this case, it is possible to prevent the overcurrent from occurring by stopping the operation of necessary load equipment and reducing the load on the entire house.

According to the energy management system and the energy management method of the present invention, in a house equipped with an electric vehicle charging facility using a household power source, an electric vehicle charging outlet can be entered by an easy remote operation from a remote operation device. It is possible to switch between the cut-off timer control and the immediate on / off control. In addition, the power consumption of the load equipment in the house can be adjusted and cut off to prevent a power outage of the entire house due to overcurrent.
In addition, it is possible to check the power usage of the electric vehicle and the energy usage status of each load facility and the charging status of the electric vehicle, and control the energy consumption of each load facility to It is possible to manage usage.

1 is an overall configuration diagram of an energy management system according to an embodiment of the present invention. 1 is an overall configuration diagram of an energy management system. It is a hardware block diagram of a home server. It is a flowchart of an automatic charge process. It is a flowchart of an automatic charge process. It is a flowchart of an automatic charge process. It is a flowchart of an automatic charge process. It is a flowchart of a manual charge process. It is a graph which shows transition of the load current value in a house. It is explanatory drawing of load control information. It is a flowchart of a load monitoring / control process. It is a flowchart of a load monitoring / control process.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. It should be noted that the system configuration, hardware configuration, processing flow, and the like described below are not intended to limit the present invention, and can be variously modified within the scope of the present invention.
In this specification, a user is a user of the energy management system of the present invention, and in the embodiment described below, is a resident of a house. Further, the electric vehicle is hereinafter referred to as “EV” (Electric Vehicle), and the home energy management system is hereinafter referred to as “HEMS” (Home Energy Management System).

  FIGS. 1 to 10 show an embodiment of an energy management system according to the present invention, FIGS. 1 and 2 are overall configuration diagrams of the energy management system, FIG. 3 is a hardware configuration diagram of a home server, and FIGS. Is a flowchart of the automatic charging process, FIG. 8 is a flowchart of the manual charging process, FIG. 9 is a graph showing the transition of the load current value in the house, FIG. 10 is an explanatory diagram of the load control information, and FIGS. It is a flowchart of a control process.

  As shown in FIGS. 1 and 2, the energy management system S according to the present embodiment includes a home server 1 as main control means, a monitor 2 as charge mode selection means, a distribution board 3, and a charging power source. As an EV outlet 4, a load facility 5 (5a to 5e) such as various electric devices, a CT sensor 6 as a load power detection means, and a CT sensor 7 as a charge power detection means. Yes. Further, a device controller 8 may be provided.

  The home server 1 as the main control means of the present embodiment is a home gateway, and performs address conversion and data transfer across different protocols of each electrical device connected to the home network 100 (broken line in FIGS. 1 and 2). The communication between devices is made possible by switching and the like, and the connection between the home network 100 and the Internet 102 is performed. The home server 1 is a server that controls the energy management system S, and controls each device connected to the home network 100, manages the power consumption of each electrical device (load facility 5), and the like. Furthermore, the home server 1 has a server function for performing authentication and the like when accessing the home network 100 from the Internet 102, and a storage function for storing information and web data acquired from each device.

  The home network 100 (broken lines in FIGS. 1 and 2) includes a home server 1, electrical equipment in a house, for example, PC equipment such as a personal computer and a printer, AV equipment such as a television and a DVD / HDD recorder, a telephone and a fax machine, etc. This is a home LAN in which telephone equipment, so-called white home appliances such as an air conditioner and a microwave oven are connected by a wired or wireless LAN. In the present embodiment, at least the home server 1, the monitor 2, the CT sensors 6 and 7, and the relay 31 provided on the distribution board 3 are connected via the home network 100. In addition, a device controller 8 as a device operation control means for controlling the operation mode and power ON / OFF of the lighting and air conditioner of each room is connected to the home server 1 via the network 100.

FIG. 3 shows a hardware configuration of the home server 1.
The home server 1 is a CPU 11 as a processing device for performing various arithmetic and control processes, a ROM 12, a RAM 13, and an HDD 14 as storage devices for storing various databases and programs, and input / output control of information between the home server 1 and the outside. And an input / output interface 15 for performing the above.

  The CPU 11 is an arithmetic processing unit that performs control and arithmetic processing of processes executed by various programs. For example, when the CPU 11 receives information about the charging mode selected by the monitor 2 dedicated to the energy management system S described later via the input / output interface 15, the CPU 11 is provided in the distribution board 3 according to the received charging mode. A process of transmitting an energization start signal or an energization end signal to the relay 31 is executed. In addition, the power consumption (current value) of each load facility 5 and EV outlet 4 is periodically received and accumulated from the CT sensors 6 and 7 via the input / output interface 15 and is necessary so that the user can check. Processing to process the information and display it on the monitor 2 is executed. Details of each process will be described later.

The ROM 12 is a storage device for storing input / output control programs and the like, and the RAM 13 is a storage device for temporarily storing data and programs necessary for executing the programs.
The HDD 14 is a storage device for storing a program for executing each process of the energy management system S and various parameters and a database necessary for executing the various programs, and is a storage unit in the present embodiment.

  For example, the HDD 14 is a program that performs a charging process when a charging mode is selected by the user, or a program that performs a display process on the monitor 2 such as the power consumption amount of the load facility 5 and the charging power amount of the electric vehicle. Etc. are remembered. In addition, as parameters, data, and databases, for example, charging start time / charging end time information when the electric vehicle is charged in the automatic charging mode, and EV state information (charging) indicating whether or not the electric vehicle is being charged. Middle / stopped), preset current rating of main breaker (main trunk capacity), power information database for storing history of power consumption regularly acquired from CT sensors 6 and 7, etc. .

  The input / output interface 15 inputs / outputs information between the home server 1 and the outside via the home network 100 and the Internet 102. For example, information on the charging mode selected on the monitor 2 and power information such as the power consumption measured by the CT sensors 6 and 7 are input to the home server 1. In addition, the CPU 11 outputs an energization start / energization end signal issued to the relay 31.

  In this embodiment, the monitor 2 is a monitor dedicated to the energy management system S using a wall-mounted touch panel display. The monitor 2 is usually installed in a place where a resident is present, such as a living room or a dining kitchen. The monitor 2 is connected to the home server 1 via the home network 100 and always displays the current date and time, the outside temperature, the room temperature, and the like. As for the outside air temperature and the room temperature, temperature information can be acquired from a temperature sensor (not shown) connected to the home server 1.

  In addition, the monitor 2 displays the connection status (connected / not connected) between the charging cable of the electric vehicle and the EV outlet 4. By displaying the connection status on the monitor 2, it is not necessary for the user to bother to check the connection status outdoors, and it is possible to check the connection status from within a house such as a living room.

As a method for acquiring the connection status between the charging cable and the EV outlet 4, for example, the pressure sensor 41 is attached to the EV outlet 4, and the information measured by the pressure sensor 41 when the charging cable is inserted is sent to the home server 1. The home server 1 can determine whether or not there is a connection.
Alternatively, an image sensor 43 may be provided around the EV outlet 4, the image data may be transmitted to the home server 1, and the home server 1 may perform image processing to determine whether the charging cable is connected. Good. When using image data, it is also possible to notify an abnormality when an object other than an object corresponding to a pre-registered image is inserted into the EV outlet 4, and as a function to prevent mischief and power theft Available.

  The monitor 2 further includes the current power consumption of the load facility 5 collected by the home server 1 from a CT sensor 6 serving as load power detection means, which will be described later, and the EV charging power acquired from the CT sensor 7 serving as charge power detection means. The amount and the charging status of the battery of the electric vehicle (implementing status such as charging / stopping charging, remaining charge, etc.) are displayed.

  The monitor 2 is also a charging mode selection means in the present embodiment, and the user can operate the monitor 2 to select a charging mode for charging the electric vehicle. Charging mode selection designates whether charging of an electric vehicle starts automatically at a predetermined time or manually. When the charging mode is selected, the user operates the touch panel of the monitor 2 to switch from the normal display such as the temperature to the charging mode selection display, and touches one of the charging modes to select a desired charging mode. The monitor 2 accepts a selection input by the user, and transmits information on the selected charging mode to the home server 1 via the home network 100.

  In the energy management system S of the present invention, while confirming the power consumption of the load equipment 5 in the house displayed on the monitor 2 provided inside the house such as a living room as described above, it is possible to perform remote operation from the monitor 2. The charging mode of the electric vehicle can be selected. In the present embodiment, two modes of “automatic charging mode” and “manual charging mode” can be selected as the charging mode.

The “automatic charging mode” is a mode for starting / ending charging of an electric vehicle at a preset charging start time / end time. In this embodiment, in the initial setting of the system, at the charge start time / end time. The start time / end time of the night time zone where power is cheap is set. The charging start time and charging end time can be changed and input from the monitor 2 by the user as needed. In the automatic charging mode, energization of the EV outlet 4 is controlled so as to automatically start / end charging at the set charging start time / end time. As will be described later, even before the set end time, when the battery of the electric vehicle is fully charged, the charging is automatically ended.
Note that when the user selects the automatic charging mode from the monitor 2, the charging start time and the charging end time may be input by displaying an input screen.

  The “manual charging mode” is a mode in which charging of an electric vehicle is started / finished immediately when the user gives an instruction to start / end charging. This charging start / end input is also performed from the monitor 2 in the same manner. When the manual charging mode is selected on the monitor 2 and “charging start” is input, the EV outlet 4 is energized to start charging. Further, when “charging end” is input during charging, the energization of the EV outlet 4 is stopped so as to end the charging. Even if the end of charging is not input, when the battery of the electric vehicle is fully charged, the home server 1 transmits an energization stop signal to a relay 31 as an energization control means described later, thereby EV. The power supply to the outlet 4 is stopped, and charging is automatically terminated.

  In the present embodiment, the automatic charging mode is selected on the monitor 2 in the initial setting, and even when the immediate charging is started / terminated in the manual charging mode, the automatic charging mode is terminated when the immediate charging in the manual charging mode is completed. Return to. That is, it is controlled so that the automatic charging process in the automatic charging mode is always started at the preset charging start time. As a result, sudden charging is required during the day, and even if charging is performed in the manual charging mode, there is no need to perform any special operation such as changing the charging mode on the monitor 2, and the charging cable is connected to the charging outlet 4. Just connect, you can perform automatic charging in the automatic charging mode at night. In this specification, the state in which the automatic charging mode is selected on the monitor 2 includes an automatic charging mode state in which the manual charging mode is returned to the automatic charging mode.

  In addition, it is not limited to this embodiment, You may comprise so that the charge mode once selected may be maintained until there exists the change input of the charge mode by the user from the monitor 2. FIG. In that case, for example, the charging mode selected in the HDD 14 of the home server 1 is stored, the stored charging mode is referred to, and control is performed to execute either the automatic charging process or the manual charging process. That's fine.

  In this embodiment, a dedicated monitor 2 using a touch panel display is provided as a charging mode selection means. However, a personal computer equipped with an input device such as a keyboard and a mouse used in the home, a web It is also possible to use a TV, a mobile phone or the like having a browser function. In this case, the home server 1 and each device are connected via the home network 100, and a module for realizing a display / input function dedicated to the present system is installed on each device side. The amount can be displayed.

  The distribution board 3 has a circuit for distributing the power supplied from the commercial power system to the electrical equipment and outlets in each room, and includes a main circuit breaker, an earth leakage breaker, a branch breaker, etc., and each branch circuit is distributed. It is connected to each load via an electric wire. Further, in the distribution board 3, a relay (relay) 31 as an energization control means is provided between the branch circuit connected to the EV outlet 4 and the distribution line.

  The relay 31 is an energization control means in this embodiment, and starts / stops energization to the EV outlet 4 by receiving an instruction signal from the home server 1 and closing / opening (ON / OFF) the switch. Control charging start / stop of electric vehicle.

  The EV outlet 4 is a charging power source for charging the electric vehicle, and is provided in the garage or outdoors. The EV outlet 4 is a 100V or 200V power source for household use, and a battery cable mounted on the electric vehicle is charged by inserting a plug of a charging cable of the electric vehicle. Although the EV outlet 4 is one of the loads in the house, in this specification, the EV outlet 4 is distinguished from the load of other electric devices, and the load facility 5 is a load other than the EV outlet 4. Shall be pointed to.

  The load facility 5 is an electric device in a house, for example, an electric device such as the lighting 5a, 5b, the air conditioners 5c, 5d, a shared outlet, and a television 5e connected to the shared outlet. For ease of explanation, the load equipment 5 is five, that is, 5a to 5e. However, the load equipment 5 is not limited to these actually, and refers to all electric devices and outlets that consume electric power (in the present specification, the above description is made). EV outlet 4 is excluded as shown in the figure).

Furthermore, in this embodiment, a CT sensor (current detector) 6 as load power detection means and a CT sensor (current detector) 7 as charge power detection means are provided.
The CT sensor 6 is attached to each distribution line between the distribution board 3 and each load facility 5 (5a to 5e), and detects the power consumption (current value) of each load facility 5. In order to facilitate the explanation, it is illustrated as a single device in FIG. 2 and is described as a CT sensor 6, but is actually attached to each distribution line from each branch circuit, and each load facility 5 (5 a ˜5e) can be detected. The CT sensor 7 is installed on a distribution line connecting the distribution board 3 and the EV outlet 4, and detects the power consumption (current value) of the EV outlet 4, that is, the charging electric energy. These CT sensors 6 and 7 are connected to the home server 1 via the home network 100. The home server 1 periodically acquires the amount of power detected by the CT sensors 6 and 7, for example, every 5 minutes, stores it in the HDD 14, and accumulates it as power information.

  In this embodiment, the home server 1 is connected to each of the CT sensor 6 for measuring the power consumption amount of the load facility 5 and the CT sensor 7 for measuring the charged energy amount of the EV outlet 4, and the home server 1 Each power amount is configured to be acquired, but a measuring instrument that collects and accumulates information of each of the CT sensors 6 and 7 is separately provided and connected to the home server 1, and the home server 1 receives information from the measuring instrument. You may comprise so that it may acquire collectively.

  The device controller 8 is a device operation control means in the present embodiment, and is a control device having an infrared remote control function, and controls an electric device that can be controlled to be turned on / off, operated, etc. by an infrared remote control signal. In the present embodiment, the device controller 8 is connected to the home server 1 via the home network 100, and based on instructions from the home server 1, the power ON / OFF of the lights 5 a and 5 b, the dimming control, the air conditioner The power ON / OFF of 5c, 5d and operation mode control, and the power ON / OFF of the television 5e and screen setting (normal mode / power saving mode) can be controlled. In the load monitoring / control processing described later, the home server 1 monitors the power consumption (electric consumption) in the house, and controls the operation of each load facility 5 from the device controller 8 according to the instruction of the home server 1. The amount of power used by each load facility 5 is adjusted. With this control, it is possible to prevent a power failure of the entire house due to overcurrent.

Next, charging control by the energy management system S will be described.
The CPU 11 of the home server 1 executes an automatic charging process in the automatic charging mode, and executes a manual charging process in the manual charging mode. In the present embodiment, the automatic charging process is normally executed in the automatic charging mode. When the user switches to the manual charging mode and inputs the start of charging, the manual charging process is started and executed, and the manual charging process is performed. When finished, the automatic charging process is performed by returning to the automatic charging mode. Hereinafter, although the flow of each processing based on this embodiment is explained, it is not limited to this, and the same charging mode is maintained and only the corresponding charging processing is executed until the charging mode change input is performed. It can also be controlled.

The automatic charging process and the manual charging process will be described with reference to FIGS. 4 to 7 show a flow of automatic charging processing, and FIG. 8 shows a processing flow of manual charging processing.
The automatic charging process is always executed at predetermined intervals by the CPU 11 of the home server 1.
In the automatic charging process, first, a preset charging start time and charging end time are acquired from the HDD 14 (step S1), and the current time is acquired from the own clock function in the home server 1 (step S2). The time is compared with the charge start time and the charge end time (step S3). And when the current time is after the charging start time and before the charging end time (charging start time <= current time <charging end time) (step S3; Yes), that is, when the current time is included in the charging time zone, When the charging process is executed (step S4) and the charging process is completed, the process returns to the top of the automatic charging process.

  In the comparison of the current time with the charge start time and the charge end time in step S3, if the current time is before the charge start time or after the charge end time (step S3; No), that is, the current time is in the charge time zone. If not included, an EV energization stop signal is transmitted to the relay 31 serving as an energization control means in order to stop charging when charging is not being performed or charging is being performed (step S5). Then, the EV state information stored in the HDD 14 is updated to “stopped” (step S6), and “not charged” is displayed on the screen of the monitor 2 to notify the user of the charging status (step S7). Return to the top of the automatic charging process.

  The EV state information indicates whether or not the electric vehicle is being charged, that is, whether the electric vehicle is being charged or not, and is stored in the HDD 14 and is based on a predetermined condition in the charging control process. Information to be updated.

  The processing on the relay 31 side when the EV energization stop signal is transmitted from the CPU 11 to the relay 31 in step S5 is as follows. When the relay 31 receives the EV energization stop signal from the home server 1, the relay 31 turns off the switch connected to the EV outlet 4. As a result, energization of the EV outlet is stopped, and charging of the electric vehicle is stopped.

In the charging process of step S4, EV state information is first acquired from the HDD 14 (step S11). When the EV state information is “charging” (step S12; Yes), the EV charging power amount (current value) is acquired (step S13). Specifically, an EV charging power amount request signal is transmitted from the CPU 11 to the CT sensor 7 as charging power detection means for measuring the current of the EV outlet 4, and the EV charging power amount is received from the CT sensor 7. Alternatively, since the home server 1 periodically acquires the current value of the EV outlet 4 from the CT sensor 7 and stores it in the HDD 14, the stored information may be referred to.
When the EV state information is other than charging, that is, when the EV state information is stopped (step S12; No), an initial value is set as the EV charging electric energy, and zero is set in this embodiment (step S14). This is because the amount of charge power is always zero during periods other than charging.

  Next, the house load power amount (current value) that is the total power consumption amount of the load equipment 5 in the house is acquired (step S15). Specifically, a housing load power amount request signal is transmitted from the CPU 11 to the CT sensor 6 as load power detection means that measures the current of the load equipment 5 in the house disposed on the distribution board 3 side. The housing load power amount is received from the CT sensor 6. Alternatively, since the home server 1 periodically acquires the current value of the load facility 5 from the CT sensor 6 and stores it in the HDD 14, the stored information may be referred to.

  Then, the preset rated current value (main capacity) of the main breaker is acquired from the HDD 14 (step S16), and the total power consumption, that is, the total value of the EV charging electric energy and the residential load electric energy, and the main capacity. Are compared (step S17). When the total value of the EV charging energy and the residential load energy is smaller than the main capacity, the main capacity has a margin, so the electric vehicle can be charged. However, the total of the EV charging power and the residential load power is possible. When the value is greater than or equal to the main capacity, the main capacity is not sufficient, and there is a possibility of overcurrent if the electric vehicle is charged. Therefore, it is necessary to control not to charge.

  Therefore, when the total value of the EV charging electric energy and the residential load electric energy is equal to or larger than the main capacity (step S17; EV charging electric energy + housing load electric power> = main capacity), that is, when the main capacity has no margin, In order to stop the charging, an EV energization stop signal is transmitted to the relay 31 as the energization control means (step S18). Then, in order to notify the user of the charging status, the display of “charging is stopped due to overload” is displayed on the screen of the monitor 2 (step S19), and the EV state information stored in the HDD 14 is updated to “stopping”. (Step S20), the process is terminated and the process returns to the beginning of the automatic charging process. The process when the relay 31 receives the EV energization stop signal from the home server 1 is the same as the process described above.

  On the other hand, as a result of the comparison in step S17, the CPU 11 determines that the total value of the EV charging electric energy and the residential load electric energy is smaller than the main capacity (step S17; EV charging electric energy + residential load electric energy <main capacity). The initial charge power amount is acquired from the HDD 14 (step S21).

  The initial charge power amount is a preset first threshold value (current value) used for determining that the battery of the electric vehicle is fully charged, and is stored in the HDD 14. The EV charging power amount at that time is compared with the initial charging power amount, and it is determined that the battery is not fully charged while the EV charging power amount is equal to or greater than the initial charging power amount. This is because the current value supplied to the battery is large when the remaining charge of the battery is low and the battery is charged, and the current value supplied to the battery decreases as the battery is charged. It is.

  The acquired EV charging energy is compared with the initial charging energy (step S22), and the EV charging energy is equal to or higher than the initial charging energy (EV charging energy> = initial charging energy) (step S22; Yes). ), That is, if it is determined that the battery is not fully charged, it is determined whether or not the EV state information acquired in step 11 is being charged (step 23). If the EV state information is other than being charged, that is, is stopped (step S23; No), in order to start charging, an EV energization start signal is transmitted to the relay 31 as the energization control means (step S24). In order to inform the user of the charging status, “charging” is displayed on the screen of the monitor 2 (step S25), and the EV state information of the HDD 14 is updated to “charging” (step S26). To return to the beginning of the automatic charging process.

  If the EV state information is being charged in step S23 (step 23; Yes), the charging is continued, and the process returns to the top of the automatic charging process.

  The processing on the relay 31 side when the EV energization start signal is transmitted from the CPU 11 to the relay 31 in step S24 is as follows. When the relay 31 receives the EV energization start signal from the home server 1, the relay 31 turns on a switch connected to the EV outlet 4. Thereby, energization to the EV outlet 4 is started, and charging of the electric vehicle is started.

  As a result of the comparison in step S22, when the EV charge energy is less than the initial charge energy (EV charge energy <initial charge energy) (step S22; No), there is a possibility of full charge. It is determined whether the battery is fully charged in consideration of the charging time. Therefore, the full charge deemed time is acquired from the HDD 14 (step S27), and the total charge time obtained by accumulating the continuous charging time is compared with the full charge deemed time (step S28).

  The full charge time is a standard time required until the battery of the electric vehicle is fully charged, and is preset in the initial setting of the system and stored in the HDD 14. Further, the total charging time can be obtained by storing the accumulated value of the time during which the CPU 11 is continuously charging in the storage area of the RAM 13 and updating it at a predetermined interval. When this total charge time is equal to or greater than the full charge time (total charge time> = full charge time) (step S28; Yes), it is determined that the battery is fully charged, and EV energization is stopped to stop charging. A signal is transmitted to the relay 31 (step S31). Then, the EV state information of the HDD 14 is updated to “stopped” (step S32, “full charge” is displayed on the screen of the monitor 2 to notify the user of the charging status (step S33), and this process is terminated. The process when the relay 31 receives the EV energization stop signal from the home server 1 is the same as the process described above.

  As a result of the comparison in step S28, if the total charge time has not reached the full charge time (total charge time <full charge time) (step S28; No), the charge end power amount is acquired from the HDD 14 (step S29). . The charge end power amount is a preset second threshold value (current value) used to determine that the battery of the electric vehicle is fully charged, and is stored in the HDD 14. Even when the total charge time has not reached the full charge time, the EV charge power amount at that time is compared with this charge end power amount, and the EV charge power amount is equal to or less than the charge end power amount. Determines that the battery is fully charged, and determines that the battery is not fully charged if the EV charge energy is greater than the charge end energy.

When the EV charge power amount is compared with the charge end power amount (step S30), and the EV charge power amount is equal to or less than the charge end power amount (EV charge power amount <= charge end power amount) (step S30; Yes), the battery In order to end the charging, the process proceeds to step S31 to perform the processes of steps S31 to S33, ends the process, and returns to the top of the automatic charging process.
When the EV charging power amount is larger than the charging end power amount (EV charging power amount> charging end power amount) (step S33; Yes), this process is terminated as it is, and the process returns to the top of the automatic charging process.

  As described above, the automatic charging process is executed by the CPU 11 of the home server 1 in the automatic charging mode, and the electrification control of the EV outlet 4 is performed, so that the battery of the electric vehicle is charged at the preset charging start time. Control is started to end charging when the battery is fully charged even if it is before or after the charging end time. In the case where the automatic charging process is repeatedly executed, it is possible to wait for a predetermined time, for example, 1 minute before returning to the beginning of the automatic charging process, and then control to return to the beginning of the process and restart the process. Will improve.

Next, the manual charging process will be described.
When the user selects the manual charging mode on the monitor 2 and inputs charging start, a manual charging start signal is transmitted from the monitor 2 to the home server 1. When receiving the manual charge start signal, the CPU 11 of the home server 1 executes the manual charge process.

  The manual charging process is a process for immediately starting charging, and first, it is determined whether or not there is an input for ending the manual charging process (step S51). When the user wants to end the charging during the charging in the manual charging mode, the charging can be ended by inputting the charging end from the monitor 2. When the user inputs charging end on the monitor 2, a manual charging end signal is transmitted from the monitor 2 to the home server 1. When the CPU 11 receives the manual charging end signal, it is temporarily stored in a storage area such as the RAM 13 and is determined with reference to this information in step S51.

When the end input of the manual charging process is not performed (step S51; No), the charging process S52 is executed. This charging process S52 is the same process as the charging process S4 in the automatic charging process (see FIGS. 5 to 7). As described above, in the manual charging process, when the user selects the manual charging mode, the energization control of the EV outlet 4 is performed based on the EV charging power amount, the house load power amount, the main capacity, etc. Control is performed so that charging of the battery of the electric vehicle is started, and charging is ended when the battery is fully charged or when the user inputs an end input.
The process when the relay 31 receives the EV energization start signal or the EV energization stop signal from the home server 1 is the same as that in the above-described automatic charging process.

  Then, it is determined whether or not the battery is fully charged (step S53). For example, when the EV state information is updated in step S32 of the charging process S52 (S4), the determination of the full charge is performed by storing the fact that the battery is “full charged” in addition to being stopped. It becomes possible. When the battery is fully charged (step S53; Yes), the process proceeds to the automatic charging process. At this point, the manual charging process is substantially finished. If the battery is not fully charged (step S53; No), the process returns to the beginning of the manual charging process, and the charging process S52 is repeatedly executed until the battery is fully charged or until the user inputs an end of the manual charging process.

  When the end input of the manual charging process is performed in step S51 (step S51; Yes), the process proceeds to the automatic charging process. At this point, the manual charging process is substantially finished. By proceeding to the automatic charging process in this way, even after charging in the manual charging mode, the automatic charging process is executed at a predetermined charging start time set in advance.

  As described above, in the energy management system S of the present invention, it is possible to select whether to charge the electric vehicle automatically or manually, and the optimum time zone while considering the power consumption of the entire house. In addition, the electric vehicle can be charged. Further, the charging mode can be easily changed and immediate charging can be easily performed by remote operation using the monitor 2.

Furthermore, in the energy management system S of the present embodiment, the home server 1 monitors the power consumption (electric consumption) of the load equipment 5 and the EV outlet 4 in the house, and warns when the electric usage approaches the main capacity. Control to automatically control or shut off the load when an overcurrent occurs. Such automatic control prevents an overcurrent from occurring, the main breaker from dropping, and the entire house from being interrupted.
The load monitoring / control function of the home server 1 will be described below. FIG. 9 is a graph showing the transition of the load current value in the house, and FIG. 10 shows the load control information.

1. Warning function As a result of using many load equipments 5 and EV outlets 4 at the same time, an overcurrent is generated, and the main breaker is cut off and the entire house is prevented from power failure. When the sum of the load power amount and the EV charge power amount reaches a predetermined current value set in advance, the user is notified of the possibility of an overcurrent and a warning is given. The predetermined current value is a current value less than the rated current value of the main breaker (main trunk capacity: main current value in FIG. 9) and close to the main capacity, and for example, a value of 90% of the main capacity can be set. This warning to the user can be performed, for example, by displaying a warning on the monitor 2 and outputting a warning sound from the speaker of the monitor 2 or sounding a buzzer. By giving such a warning, it is possible to urge the user to stop using unnecessary electrical equipment by his / her own operation. For example, this warning display is performed at points a and b in the graph shown in FIG.

2. Automatic load control function Even if a warning is given, if you continue to use electrical equipment etc., and the total electricity usage exceeds the main capacity, and the current value that exceeds the main capacity is within the specified value, Control is performed to automatically reduce the amount of electricity used by each load facility 5 to a preset current value. For example, such control that reduces the load of each load facility 5 is performed at the point c in the graph shown in FIG. In this embodiment, the predetermined value used for determining the current value here is the same value as the predetermined value used for determining whether or not the automatic load interrupting function will be described later.

As an example of the load setting for each load facility, the setting shown in FIG. 10 can be performed in advance. FIG. 10 shows the load control information, and each value of the load control information is set in advance by the user and stored in the HDD 14.
For example, load equipment 5 subject to load control includes lighting 5a, lighting 5b, air conditioner 5c, air conditioner 5d, and television 5e. The rated current values of load equipment 5 (5a to 5e) and EV outlet 4 are 3A ( A: Ampere, the same applies below), 2A, 20A, 30A, 5A, 20A, and the main current value is 50A. Further, it is assumed that 1A, 1A, 10A, 15A, 3A, and 20A are set as the adjusted minimum load current values of the load facilities 5 (5a to 5e) and the EV outlet 4, respectively. In the present embodiment, the power consumption of the EV outlet 4 is given the highest priority. That is, the EV outlet 4 is not subject to load control, and the adjusted minimum load current value is set to the same value as the rated current value.

  When all the loads are used at the same time, the total load when each load facility 5 and EV outlet 4 is operated at the minimum load is 50A. That is, the total of the adjusted minimum load current values is set to be equal to or less than the main capacity. The home server 1 checks the amount of electricity used by each load facility 5 and EV outlet 4 actually used at a predetermined interval and the total amount of electricity used, and only the current value that exceeds the main capacity, An instruction to adjust any or all of the load equipment 5 within the range of the adjusted minimum load current value is transmitted to the device controller 8.

  Adjustment methods for each load equipment 5 include power ON / OFF of the lights 5a and 5b and dimming control, power ON / OFF of the air conditioners 5c and 5d and operation mode control, power ON / OFF of the television 5e and screen setting. The amount of electricity used is adjusted by controlling (normal mode / power saving mode). The device controller 8 controls the power ON / OFF of each load facility 5 and the operation mode based on an instruction from the home server 1, thereby preventing a power failure of the entire house due to overcurrent. .

  Although the priority order of the load facility that performs load adjustment is set in advance, it is possible to set a plurality of priority orders according to conditions. For example, as shown in FIG. 10, the priority order of load adjustment in the daytime is the order of the lighting 5a, the lighting 5b, the air conditioner 5c, the air conditioner 5d, and the television 5e. Settings such as the order of priority of adjustment may be the order of the air conditioner 5c, the air conditioner 5d, the television 5e, the illumination 5a, and the illumination 5b.

  In addition, when the load is automatically adjusted on the home server 1 as described above, the adjustment target device and the state after adjustment (power ON / OFF, operation mode, etc.) are displayed on the monitor 2 as the adjusted contents. So that the user can confirm. Such a display makes it possible to grasp the state after being automatically adjusted, and to urge the user to stop using unnecessary electrical devices by the user's own operation.

3. Automatic load cut-off function When an overcurrent occurs even if control is performed to adjust the load by lowering the load, the load equipment 5 is automatically cut off sequentially in the order set in advance. For example, at the point d in the graph shown in FIG.
The home server 1 compares the total electricity usage and the main capacity, and if the total electric usage exceeds a predetermined value set in advance, for example, when it exceeds 150% of the main capacity, priority is given. An instruction is transmitted to the device controller 8 to shut off the load facility 5 according to the rank. Based on the received instruction, the device controller 8 transmits an infrared remote control signal for turning off the power to the corresponding load facility 5 and shuts off the power of the load facility 5. The load facility 5 is sequentially turned off until the amount of power used falls below the main capacity.

4). Automatic load recovery function In the energy management system S, it is possible to set whether or not to perform automatic recovery. If it is set to automatically return, if the state where the total electricity usage is less than or equal to the preset return current value due to automatic load adjustment and automatic shutoff, continues for a predetermined time or more, The load facility 5 is automatically energized and restored. For example, such automatic return control is performed at point e in the graph shown in FIG.

  The home server 1 compares the total electricity consumption with a preset return current value, and if the state where the overall electricity consumption is less than or equal to the restoration current value continues for a predetermined time or longer, the power supply An instruction is transmitted to the equipment controller 8 so that the power supply of the load facility 5 is sequentially restored in the reverse order of the order in which the power is cut off. On the basis of the received instruction, the device controller 8 transmits an infrared remote control signal for turning on the power of the corresponding load facility 5 to restore the power of the load facility 5.

Next, load monitoring / control processing executed by the CPU 11 of the home server 1 will be described with reference to flowcharts shown in FIGS.
The CPU 11 uses the electric power consumption (EV charging electric energy) of the EV outlet 4 regularly acquired from the CT sensor 7 and the electric power consumption (housing load) of the load facility 5 periodically acquired from the CT sensor 6. The amount of power is acquired from the HDD 14 (step S71, step S72). The EV charging electric energy and the residential load electric energy may be acquired by transmitting a transmission request directly to the CT sensor 7 and the CT sensor 6, respectively.

  Then, the master capacity and the overcurrent determination value set in advance are acquired from the HDD 14 (step S73, step S74). The overcurrent determination value is a determination value for monitoring the total amount of electricity used (the sum of residential load energy and EV charging energy) and performing control based on the amount of electricity used. Contains a value. The warning current value is a threshold value for determining whether or not to issue a warning when the total electricity usage approaches the main capacity, and is a current value less than the main capacity and close to the main capacity, for example, 90% of the main capacity. Value is set. The cut-off current value is a threshold value for determining to cut off the load when the total electricity usage becomes larger than the main capacity by a certain value, for example, a value of 150% of the main capacity is set. . In step S74, instead of acquiring the warning current value and the cutoff current value from the HDD 14, the CPU 11 uses the warning current value and the cutoff current based on a predetermined ratio (eg, 90%, 150%) to the main capacity and the main capacity. The value may be calculated.

  Comparing the total power usage amount and the warning current value (step S75), if the power usage amount is less than the warning current value (step S75; Yes), refer to the load state information and if the load state information is normal (Step S76; Yes) Since there is a surplus in the main capacity, the processing returns to the top as it is. The load state information indicates states such as normal, warning, adjustment, and stop as the operation status of the load facility 5, and is information updated in the load monitoring / control processing.

  If the load status information is not normal (step S76; No), it indicates that a warning has been issued in the load monitoring / control process or that some control has been performed on the load facility 5. In order to return the operation of the facility 5 to normal operation, a load operation return instruction signal is transmitted to the device controller 8 (step S77), the load state information is updated to “normal” (step S78), and the load on the monitor 2 is normal It is displayed that the operation is being performed (step S79).

  Upon receiving the load operation return instruction signal from the CPU 11, the device controller 8 transmits an infrared signal based on the content of the instruction to turn on the power of the target load facility 5 or return to the normal operation mode. .

  When the total power usage amount is equal to or greater than the warning current value in the comparison in step S75 (step S75; No), the CPU 11 further compares the total power usage amount with the main capacity (step S80). If the total power consumption is less than or equal to the main capacity (step S80; No), no overcurrent has occurred, but there is a possibility of overcurrent, so a warning is displayed on the monitor 2 (step S81). ), The load state information is updated to “warning” (step S82), and the process returns to the top. If the total power consumption is larger than the main capacity (step S80; Yes), load control information is acquired from the HDD 14 (step S83). Then, the total power usage amount is compared with the cutoff current value (step S84).

  When the total power consumption is less than or equal to the cut-off current value (step S84; No), in order to adjust the operation of the load facility 5 and reduce the load, the priority order and adjustment of the devices are performed based on the acquired load control information. A load operation adjustment instruction signal for adjusting the operation of the target load facility 5 is transmitted to the device controller 8 in accordance with the post-minimum load power amount (step S85). Thereafter, the load state information is updated to “adjusting” (step S86), the operation mode of the target load facility 5 and the operation being performed during adjustment are displayed on the monitor 2 (step S87), and the top of the process Return to.

  Upon receiving the load operation adjustment instruction signal from the CPU 11, the device controller 8 transmits an infrared signal based on the content of the instruction, and adjusts the operation mode of the target load facility 5.

  When the total power consumption exceeds the breaking current value in the comparison in step S84 (step S84; Yes), the CPU 11 shuts off the power supply of the load facility 5 and stops the operation, so that it is based on the acquired load control information. Then, in accordance with the priority order of the devices, the operation of the target load facility 5 is stopped, that is, a load operation stop instruction signal for turning off the power is transmitted to the device controller 8 (step S88). Thereafter, the load state information is updated to “stopped” (step S89), the monitor 2 displays that the operation of the target load facility 5 is stopped (step S90), and the process returns to the top.

  Upon receiving the load operation stop instruction signal from the CPU 11, the device controller 8 transmits an infrared signal based on the content of the instruction, and turns off the target load equipment 5.

  Since this load monitoring / control process is repeatedly executed at a predetermined interval, even when the load facility 5 is shut off or the operation is adjusted, if the overall power consumption becomes less than the warning value, the automatic load recovery is performed. The operation of the load facility 5 is returned to normal operation by the function.

  As described above, the energy management system S has a function of grasping the total power consumption (electric consumption) in the house and controlling or blocking the load facility 5. By this control, it is possible to perform appropriate power consumption in the house, and it is possible to prevent the main house breaker from being interrupted and the entire house from being interrupted.

  In addition, a photovoltaic power generation system or a storage battery system can be introduced into a house and incorporated into the energy management system S. When a solar power generation system or a storage battery system is installed, the current power generation amount, power sale amount, power purchase amount, power consumption amount, remaining amount of power stored in the storage battery, “currently buying”, “currently selling” "Can be displayed so that the user can confirm the information. Furthermore, it is also possible to display a history such as daily performance and monthly performance related to the amount of electric power, and use of electric equipment etc. while checking the actual amount of power such as power generation and consumption. It can be controlled to save power. Moreover, the electric power generated in the house can be used for charging the electric vehicle, and the electric power can be used effectively.

  As described above, according to the energy management system of the present invention, the charging / discharging timer control and the immediate switching control of the electric vehicle can be performed by an easy remote operation from the monitor in the house. . In addition, in a house equipped with an electric vehicle charging facility using a household power source, it is possible to check the electricity usage status of the electric vehicle charging outlet and each load facility, and control the power consumption of each load facility. This makes it possible to manage the energy use of the entire house. In addition, the power consumption of the load equipment in the house can be adjusted and cut off to prevent a power outage of the entire house due to overcurrent.

S Energy management system 1 Home server (main control means)
2 Monitor (charging mode selection means)
3 Distribution board 4 EV outlet 5 (5a to 5e) Load facility 6 CT sensor (load power detection means)
7 CT sensor (charging power detection means)
8. Equipment controller (equipment operation control means)
11 CPU
12 ROM
13 RAM
14 HDD (storage means)
15 Input / output interface 31 Relay (energization control means)
41 Pressure sensor 43 Image sensor 100 Home network 102 Internet

Claims (11)

A charging power source for charging the battery of the electric vehicle;
Energization control means for controlling energization to the charging power supply;
Charging mode selection means provided at a location remote from the charging power source, for selecting a charging mode of the electric vehicle by a user operation;
Main control means for transmitting an energization start signal or an energization stop signal to the energization control means based on the charge mode selected by the charge mode selection means,
The charging mode selection means can select an automatic charging mode in which charging is performed in a predetermined charging time zone defined by a charging start time and a charging end time, and a manual charging mode in which immediate charging is started when the charging start is specified. An energy management system characterized by   When the automatic charging mode is selected by the charging mode selection unit, the main control unit determines whether the current time is included in the charging time zone and the energization control unit when the battery is not fully charged. The energy management system according to claim 1, wherein an energization start signal is transmitted, and in other cases, an energization stop signal is transmitted to the energization control unit.   When the manual charging mode is selected by the charging mode selection means, the main control means transmits an energization start signal to the energization control means upon accepting the charging start input from the charging mode selection means, and ends charging 2. The energy management system according to claim 1, wherein an energization stop signal is transmitted to the energization control unit when the energy is received. Charging power detection means for detecting the amount of charging power from the charging power source to the electric vehicle,
The main control unit causes the charging mode selection unit to display at least a charging status including charging, stopping, and full charging based on the charging power amount of the electric vehicle acquired from the charging power detection unit. The energy management system according to any one of claims 1 to 3, wherein the energy management system is characterized. Load power detection means for detecting the power consumption of the load equipment in the house;
Charging power detection means for detecting the amount of charging power from the charging power source to the electric vehicle;
Device operation control means capable of operation control of the load facility;
Storage means for storing the main capacity of the house,
The main control means includes the power consumption amount of the load facility acquired from the load power detection means, the charge power amount of the electric vehicle acquired from the charge power detection means, and the main capacity acquired from the storage means. In comparison, when the total amount of power consumption of the load facility and the amount of charge power of the electric vehicle exceeds the main capacity, the device operation control means is operated to reduce the load of the load facility. The energy management system according to claim 1, wherein an instruction signal for instructing to perform is transmitted.   The main control means, when the total power amount of the power consumption of the load facility and the charging power amount of the electric vehicle exceeds a predetermined value based on the main capacity, the equipment operation control means, The energy management system according to claim 5, wherein an instruction signal for instructing to stop the operation of the facility is transmitted. An energy management method using the energy management system according to claim 1,
The charging mode selection means receives a selection of either an automatic charging mode or a manual charging mode by a user operation, and transmits the selected charging mode to the main control means;
The main control means receiving a charging mode from the charging mode selection means;
The main control means includes a step of transmitting an energization start signal or an energization stop signal to the communication control means based on the received charging mode. When the selected charging mode is an automatic charging mode, the main control means determines whether the current time is included in the charging time zone; and
The main control means comprising determining whether the battery is fully charged,
In the step of transmitting an energization start signal or an energization stop signal to the communication control unit, the main control unit transmits an energization start signal when the current time is included in the time zone and the battery is not fully charged. In other cases, an energization stop signal is transmitted, and the energy management method according to claim 7. When the selected charging mode is a manual charging mode, the main control unit includes a step of receiving a charging start or a charging end from the selection mode selection unit,
In the step in which the main control unit transmits an energization start signal or an energization stop signal to the communication control unit, the main control unit transmits an energization start signal to the energization control unit as soon as the charging start is received, and charging ends. The energy management method according to claim 7, wherein an energization stop signal is transmitted to the energization control unit as soon as the command is received. The energy management system includes a load power detection unit that detects a power consumption amount of a load facility in a house, a charge power detection unit that detects a charge power amount from the charging power source to the electric vehicle, and the load facility. Equipment operation control means capable of operation control, and storage means for storing the main capacity of the house,
The main control means acquires the power consumption amount of the load facility from the load power detection means, acquires the charge power amount of the electric vehicle from the charge power detection means, and acquires the main capacity of the house from the storage means And steps to
The main control means, the total power amount of the power consumption amount of the load equipment and the charging power amount of the electric vehicle is compared with the main capacity,
When the total amount of power consumption of the load facility and the charge energy of the electric vehicle exceeds the main capacity, the main control means, the equipment operation control means, the load of the load facility The energy management method according to claim 7, further comprising a step of transmitting an instruction signal instructing to perform a decreasing operation.   When the total power amount of the power consumption amount of the load facility and the charging power amount of the electric vehicle exceeds a predetermined value based on the main capacity, the main control means, the equipment operation control means, The energy management method according to claim 10, further comprising a step of transmitting an instruction signal instructing to stop the operation of the load facility.

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