JP2004248358A - Solar power generation device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a standalone solar power generation device which is entirely separated from a commercial power network, in which users are not required to provide a complex electric wiring distributively between a charge/discharge controller, a battery, and an inverter respectively, for improved maintenability, while imparting a easy portability to the power generation device. <P>SOLUTION: A battery 5 in which the DC power generated with a solar cell module 4 is charged, a charge/discharge controller 6, and an inverter 7 are housed in a single mobile case 8. A display part 9 for displaying a charged state of the battery 5, a receptacle 10 for outputting an AC power which has been converted with the inverter 7, a charge switching means 13 for switching and charging to an external battery 12 other than the battery 5, are concentrically arranged in the case 8. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention is a power generation device completely separated from a commercial power system, in which a DC power generated by a solar cell module can be charged into a battery, and the DC power charged in the battery is converted into an AC by an inverter. The present invention relates to a stand-alone photovoltaic power generator for supplying a load.
[0002]
[Prior art]
In a conventional stand-alone photovoltaic power generation device, the four elements constituting the power generation device, namely, a solar cell, a charge / discharge controller, a battery, and an inverter (power conditioner) are respectively located at different places, that is, on a roof or inside or outside the room. It is common that they are distributed and arranged in various places. (For example, see Non-Patent Document 1.)
[0003]
[Non-patent document 1]
JPEA Photovoltaic Power Society, "Stand-Alone System", Photovoltaic Power to Want to Know More, [online], January 29, 2003, JPEA Photovoltaic Power Society, [Search February 7, 2003], Internet <URL: http: // www. jpea. gr. jp / index. html>
[0004]
[Problems to be solved by the invention]
However, in the arrangement of the conventional stand-alone photovoltaic power generator as described above, a general user must perform complicated electric wiring between the charge / discharge controller, the battery, and the inverter, which are distributed, and the power generation is not performed. Since it is difficult to grasp the operating state of the entire apparatus, the maintainability is poor, and the entire power generation apparatus that is distributed cannot be easily moved. Therefore, the charge / discharge controller, battery, inverter, and the like are centrally arranged. At the same time, it has been desired to make the power generation device portable.
[0005]
[Means for Solving the Problems]
The present invention has been made for the purpose of solving the above problems, a battery that charges DC power generated by a solar cell module, a charge and discharge controller that controls overcharge and overdischarge of the battery, A first feature of a solar power generation device including an inverter for converting DC power charged in a battery into AC power, wherein the battery, the charge / discharge controller, and the inverter are housed in one portable housing. .
[0006]
The casing is composed of a lower casing and an upper casing that can be opened and closed with respect to the lower casing. A charge / discharge controller and an inverter are mounted on the upper casing, and a battery is mounted in the lower casing. This is a second feature.
[0007]
On one side of the upper housing, a display unit for displaying the state of charge of the battery, an outlet for outputting AC power converted by the inverter, and a charge switching unit for switching and charging an external battery other than the battery are concentrated. A third feature is that the exhaust port is provided on the other side of the upper housing, in addition to the above-described configuration.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described below in detail with reference to the accompanying drawings.
[0009]
FIG. 1 illustrates an example in which the photovoltaic power generation device of the present invention is introduced into a farm building without a residential power distribution facility (commercial power system). In this embodiment, a work material or a work vehicle for agriculture is used. On one side of the roof 2 of the farm building 1 which is used as a hangar, a work place, and the like, a portable solar cell module 4 in which two solar cell panels 3, 3 are connected to each other and juxtaposed is laid. It is.
[0010]
And since the said solar cell module 4 can be easily carried, as long as the said solar cell module 4 can receive sunlight efficiently, various places, such as a mountainous area, a field, a ship, etc. Can be installed in
[0011]
FIG. 2 is a conceptual diagram showing an embodiment of the solar power generation device of the present invention, and a battery 5 for charging DC power generated by a solar cell module 4 installed according to a use such as a roof of a farm building 1; A charging / discharging controller 6 for controlling overcharging and overdischarging of the battery 5 and an inverter 7 for converting DC power charged in the battery 5 into AC are provided in one portable housing 8 shown by a two-dot chain line in the figure. Housed.
[0012]
Further, the housing 8 further includes a display unit (battery monitor) 9 for displaying the state of charge of the battery 5, an outlet 10 for outputting AC power converted by the inverter 7 and providing it to AC home appliances, and the like. A connection terminal 11 for supplying the charged DC power to a DC pump or the like is provided, and a changeover switch 13 or the like is provided as a charge switching means so that the external battery 12 other than the battery 5 can be switched and charged. The housing 8 is usually placed at a desired position such as the farmhouse 1 (indoor).
[0013]
Next, a specific configuration of the above-described housing 8 will be described in detail below.
[0014]
FIG. 3 is a side view of the housing 8 including a cross-section cut off along a partly broken line, and FIG. 4 is a view (plan view) of an arrow A in FIG. It comprises a lower housing 8a and an upper housing 8b which can be opened and closed with respect to the lower housing 8a via hinges 21 and 21.
[0015]
In the lower housing 8a, a relatively heavy and stable battery 5 for charging the DC power generated by the solar cell module 4 is provided, and the upper portion of the battery 5 has a full width. The holding metal fitting 22 for pressing over is fixed by tightening both ends with bolts with hooks 23 that lock the lower housing 8a.
On the other hand, a light charge / discharge controller 6 and a light inverter 7 are attached to the upper part of the upper casing 8b via a detachable partition board 24, so that the upper casing 8b can be opened and closed without difficulty. be able to.
[0016]
Reference numerals 31 in the figure denote snap fasteners that fix the upper housing 8b to the lower housing 8a in a closed state. Reference numeral 32 denotes a connector for connecting an input cable from the solar cell module 4.
It should be noted that handles 33, 33 are provided on both left and right sides of the upper housing 8b. By holding the handles 33, the housing 8 containing the relatively heavy battery 5 is placed in a desired installation location. Although it can be easily moved, a caster may be further attached to the bottom of the lower housing 8a to improve portability.
[0017]
FIG. 5 is a view as viewed in the direction of the arrow B in FIG. 3 (a schematic front view), and the state of charge of the battery 5 is displayed on the upper front side of the upper housing 8b formed to be slightly inclined backward. A battery monitor 9 serving as a display unit; an AC 100 V outlet 10 for outputting AC power converted by the inverter 7; a charge switch 13 serving as charge switching means for switching and charging an external battery 12 other than the battery 5; A connector 41 for connecting a cable for charging the battery 12, an indicator lamp 42 for displaying a state of charging / discharging using the external battery 12, an ON / OFF switch 43 of the inverter 7, a fuse box 44 and the like. It is arranged in a way.
[0018]
That is, in the housing 8, the electric wiring is made mutually in a state where the battery 5, the charge / discharge controller 6, the inverter 7, and the like, which are the main elements constituting the photovoltaic power generator of the present invention, are housed in a compact manner. Therefore, a general user does not need to perform complicated electric wiring between the battery 5, the charge / discharge controller 6, and the inverter 7, which are components of the photovoltaic power generator.
[0019]
On one side (front side) of the upper housing 8b constituting the housing 8, the above-mentioned battery monitor 9, AC 100V outlet 10, charging switch 13, connector 41, indicator lamp 42, and ON / OFF of the inverter 7 are provided. The OFF switch 43, the fuse box 44, and the like are arranged in a centralized manner, so that the operating state of the entire photovoltaic power generator can be easily grasped, and its maintainability can be improved. .
[0020]
Furthermore, the photovoltaic power generation device of the present invention has a configuration excellent in portability as described above, and includes a housing 8 accommodating the battery 5, the charge / discharge controller 6, the inverter 7, and the like, and the solar cell module 4, It can be installed in various places such as a mountainous area, a field, and a ship according to the intended use, and the power generated by the solar cell module 4 can be supplied to a load, and the battery 5 in the housing 8 is charged. In this state, the housing 8 can be carried alone and used as an emergency power source in places where there is no power source for lighting equipment and electric tools, such as troubles such as a dead battery in the vehicle.
[0021]
FIG. 6 is a view as viewed in the direction of the arrow C in FIG. 3 (rear view). In order to safely discharge hydrogen gas generated when the battery 5 housed in the housing 8 is charged, the upper housing 8b is An exhaust port 51 made of a punched metal 50 or the like having a high porosity is provided on the upper rear surface side, so that danger such as a flash explosion due to the hydrogen gas can be avoided.
[0022]
【The invention's effect】
As described above, the present invention provides a battery 5 for charging DC power generated by the solar cell module 4, a charge / discharge controller 6 for controlling overcharge and overdischarge of the battery 5, and a DC power for charging the battery 5. And a battery 7, a charging / discharging controller 6, and the inverter 7 are housed in one portable housing 8, so that the solar power generating device Since the main components such as the battery 5, the charge / discharge controller 6, and the inverter 7 are compactly housed in a collective manner, the electric wiring is made mutually. There is no need to perform wiring.
Further, the photovoltaic power generation device is configured to be excellent in portability, and the solar cell module 4 and the housing 8 accommodating the battery 5, the charge / discharge controller 6, the inverter 7, and the like are collectively stored in the mountainous area according to the usage. Can be installed in various places, such as a field, a field, and a ship, so that the power generated by the solar cell module 4 can be supplied to the load, and if the battery 5 in the housing 8 is in a charged state, the vehicle It is also possible to use the housing 8 alone as a power source for emergency by carrying the housing 8 alone to a place where there is no power supply for lighting equipment and electric tools, for example, when the battery is dead.
[0023]
The casing 8 is composed of a lower casing 8a and an upper casing 8b that can be opened and closed with respect to the lower casing 8a. The charging / discharging controller 6 and the inverter 7 are attached to the upper casing 8b. By installing the battery 5 in the lower housing 8a, the battery 5 is relatively heavy and the lower housing 8a is stable, while the charge / discharge controller 6 and the inverter 7 are light in weight and the upper housing 8b Can be easily opened and closed, and maintenance is improved.
[0024]
Then, on one side of the upper housing 8b, a display unit 9 for displaying the state of charge of the battery 5, an outlet 10 for outputting the AC power converted by the inverter 7, and an external battery 12 other than the battery 5 are switched and charged. In addition to intensively disposing the charge switching means 13 and the like, and providing the exhaust port 51 on the other side of the upper housing 8b, the operating state of the entire power generation device can be easily grasped, and maintenance is performed. By providing the exhaust port 51 on the other side of the upper housing 8b, the hydrogen gas generated when the battery 5 is charged can be safely discharged, and the danger of ignition explosion or the like due to the hydrogen gas can be obtained. Can be avoided.
[Brief description of the drawings]
FIG. 1 is an external view of a farm building in which a solar cell module is laid on a roof.
FIG. 2 is a conceptual diagram showing an embodiment of a solar power generation device.
FIG. 3 is a side view of the housing including a cross section cut along a partly broken line.
FIG. 4 is a view (plan view) as viewed from an arrow A in FIG. 3;
FIG. 5 is a view (schematic front view) as viewed from the direction indicated by the arrow B in FIG.
FIG. 6 is a view as viewed from the arrow C (rear view).
[Explanation of symbols]
Reference Signs List 4 Solar cell module 5 Battery 6 Charge / discharge controller 7 Inverter 8 Housing 8a Lower housing 8b Upper housing 9 Display unit 10 Outlet 12 External battery 13 Charge switching means

Claims (3)

A battery (5) for charging DC power generated by the solar cell module (4), a charge / discharge controller (6) for controlling overcharge and overdischarge of the battery (5), and a DC for charging the battery (5) In a photovoltaic power generation device provided with an inverter (7) for converting electric power into alternating current, the battery (5), the charge / discharge controller (6), and the inverter (7) are housed in one portable body (8). A solar power generation device characterized by being housed. The housing (8) is composed of a lower housing (8a) and an upper housing (8b) that can be opened and closed with respect to the lower housing (8a). 2. The photovoltaic power generator according to claim 1, wherein the battery is installed in the lower housing while the inverter is installed. On one side of the upper housing (8b), a display unit (9) for displaying the state of charge of the battery (5), an outlet (10) for outputting AC power converted by the inverter (7), and the battery ( 5) The charge switching means (13) and the like for switching and charging the external battery (12) other than 5) are centrally disposed, and the exhaust port (51) is provided on the other side of the upper housing (8b). The photovoltaic power generator according to claim 2, characterized in that:

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