TWI552485B - Dc backup equipment - Google Patents

Description

DC backup equipment

The invention relates to a backup device, in particular to a DC backup device.

Referring to Figure 1, a conventional communication backup device is applied to a power supply system and a computer system. The power supply system includes at least one, for example, two AC transformers 91, 92, at least one, for example, two generators 93, 94, and a power distribution unit (UPS). The computer system includes an AC Power Shelf 98, a DC bus 99, a plurality of, for example, two servers 991, 992, and a plurality of, for example, two storage devices 993, 994. The power distribution unit 97 selects the AC output power transmitted by at least one of the two power lines and supplies power to the AC power cabinet 98 so that the servers 991, 992 and the storage devices 993, 994 can be sufficient. The electricity comes to work.

The two AC transformers 91, 92 respectively receive power from a power plant or other transformer and will step down to output two AC output powers to the corresponding two power lines.

The two generators 93, 94 are, for example, a diesel generator. And electrically connecting the two AC transformers 91 and 92 and electrically connecting the power distribution unit 97, and respectively detecting the two AC output powers, and detecting that the corresponding AC output power is abnormal, for example, the voltage is lower than one. At a predetermined value, the motors of the corresponding generators 93, 94 operate to output another AC output power to the corresponding power line.

The conventional AC backup device includes at least one, for example, two uninterruptible power systems (UPS), which are electrically connected to the two AC transformers 91, 92, respectively. And the two generators 93, 94 are also electrically connected to the power distribution unit 97. Each of the uninterruptible power systems 95, 96 includes an AC-to-DC converter, a power storage module, a DC-to-AC converter, and a control unit. The control unit of each uninterruptible power system detects a voltage value of the corresponding power line, and when the control unit detects that the voltage value is in a normal range, the control unit controls the corresponding AC-DC converter to The power on the corresponding transmission line is converted into direct current, and the electric energy is stored in the corresponding storage module. When the control unit detects that the voltage value is lower than a set value, the control unit controls the corresponding DC-AC converter to release the stored energy stored by the corresponding storage module to the corresponding power line.

The conventional communication backup device detects whether the AC output power of the power transmission line is normal, and has the AC-DC converter and the DC-to-AC converter, so that the device is bulky and difficult to install, and Both charging and discharging require a DC-to-AC or AC-to-DC step, which results in poor energy conversion efficiency.

Accordingly, it is an object of the present invention to provide a DC backup device that is small in size, high in energy density, easy to deploy, and highly reliable.

Thus, the DC backup device of the present invention is suitable for electrically connecting a server and includes a battery backup system. The battery backup system includes N battery backup units and a battery backup control unit. The battery backup control unit may be disposed outside the N battery backup units, or may be disposed in one of the N battery backup units.

Each battery backup unit is electrically connected to the battery backup control unit, and provides a status information and a previous self-test information to the battery backup control unit, so that when an input power source is powered off, the battery backup control unit Controlling at least one of the N battery backup units provides power to the server.

In some implementations, the DC backup device is further configured to electrically connect a DC bus to the DC backup device and the server, and the input power is powered by the DC bus to the server.

Each of the N battery backup units is adapted to electrically connect the DC bus and receive a corresponding first control signal. When the battery backup unit operates in an activated state, the operation is determined to be between a discharge mode and a charging mode according to the corresponding first control signal. When the battery backup unit operates in the discharge mode, the battery backup unit discharges the DC sink. When the battery backup unit operates in the charging mode, the battery backup unit takes power from the DC bus and charges.

The battery backup control unit is adapted to electrically connect the DC bus bar to detect a voltage value of the DC bus bar and further electrically connect the N battery backup units. When the battery backup control unit detects that the voltage value of the DC bus is less than a first predetermined voltage, the battery backup control unit determines that the input power is powered off, and generates the M1 first indicating the discharge mode. The control signal, M1 is a positive integer and M1 is not greater than N. When the battery backup control unit detects that the voltage value of the DC bus is at a first predetermined voltage range, the battery backup control unit generates the N first control signals indicating the charging mode.

In some implementations, wherein the battery backup control unit adjusts when one of the N battery backup units operates in the discharge mode and the battery backup unit is removed or fails The remaining of the N battery backup units operate in the discharge mode to provide power to the server.

In some implementations, the DC backup device is further configured to electrically connect to an AC power cabinet, where the AC power cabinet includes a power cabinet control unit electrically connected to the DC bus bar to detect a voltage value of the DC bus bar. . When the power cabinet control unit detects that the voltage value of the DC bus is less than a second predetermined voltage, the power cabinet control unit generates the M2 second control signals indicating the discharge mode, where M2 is a positive integer and M2 is not Greater than N. When the power cabinet control unit detects that the voltage value of the DC bus is in a second predetermined voltage range, the power cabinet control unit generates the N second control signals indicating the charging mode. Wherein, each battery backup unit of the battery backup system is electrically connected to the battery The source cabinet control unit receives the corresponding second control signal, and when the battery backup unit operates in the startup state, determines the operation in the discharging according to the corresponding first control signal and the corresponding second control signal. Mode and the charging mode.

In some implementations, each battery backup unit of the battery backup system includes a battery module for storing power, a charging module, a discharge module, and a microcontroller. The charging module is electrically connected to the battery module and the DC bus bar, and is controlled to charge the battery module by the power of the DC bus when the charging mode is controlled. The discharge module electrically connects the battery module and the DC bus bar, and when controlled in the discharge mode, discharges the amount of electricity stored in the battery module to the DC bus, so that the voltage value of the DC bus bar is A third predetermined voltage.

The microcontroller electrically connects the battery module, the charging module, the discharging module, the battery backup control unit, and the power cabinet control unit, and receives the corresponding first one from the battery backup control unit a control signal, and the corresponding second control signal from the power cabinet control unit, and also according to a priority order to determine whether to correspond to the corresponding first control signal or the corresponding first control signal and corresponding The second control signal controls the charging module to perform charging on the battery and controls the discharging module to discharge the battery.

In some implementations, wherein the battery backup control unit of the battery backup system detects that the voltage value of the DC bus is within a third predetermined voltage range, the battery backup control unit further Generating a third control signal indicating an activation state, and the third control signal The microcontroller is transferred to each battery backup unit. The microcontroller of each battery backup unit of the battery backup system is also electrically connected to the DC bus bar to detect the voltage value of the DC bus bar. When the microcontroller detects that the voltage value of the DC bus is within a fourth predetermined voltage range, and the received third control signal indicates the startup state, the battery backup unit operates in the startup state. .

In some implementations, the battery backup control unit of the battery backup system further stores the status information of the N battery backup units and the previous self-test information.

In some implementations, wherein the DC backup device further comprises (K-1) the battery backup system, K being a positive integer and greater than 1. The battery backup control units of the K battery backup systems are electrically connected to each other, and when the battery backup units of the K battery backup systems operate in the startup state, the K battery backup systems are One will act as a master system, and each of the remaining (K-1) battery backup systems will act as a slave system. The battery backup control unit of the battery backup system of the master control system can obtain the status information stored by the battery backup control units of the battery backup systems of the slave systems, and the like. Having previously self-tested information, and based on the status information and the prior self-test information, controlling the battery backup units operating as the battery backup control units of the slave systems in the discharge mode and the charging mode .

Or in some implementations, the DC backup device is further configured to electrically connect to an AC power cabinet, where the AC power cabinet includes one Power cabinet control unit. When the power cabinet control unit detects that the input power is off, the power cabinet control unit generates a plurality of control signals. The battery backup unit of the battery backup system is also electrically connected to the power cabinet control unit to receive the control signals, and provides power to the server.

The utility model has the advantages that the plurality of battery backup systems of the DC backup device replace the plurality of uninterruptible power systems of the AC backup device, thereby achieving small size, easy installation, and conversion efficiency. The advantages and, more importantly, the battery backup control unit can operate independently even when the power cabinet control unit fails, so that the battery backup system can operate normally and greatly improve the reliability of the system.

1‧‧‧Battery backup system

11‧‧‧Battery Backup Control Unit

12‧‧‧Battery backup unit

121‧‧‧Battery module

122‧‧‧Charging module

123‧‧‧Discharge module

124‧‧‧Microcontroller

13‧‧‧Battery backup unit

2‧‧‧AC power cabinet

21‧‧‧Power cabinet control unit

22‧‧‧Power supply unit

23‧‧‧Power supply unit

3‧‧‧DC busbar

41‧‧‧Power distribution unit

42‧‧‧AC transformer

43‧‧‧AC transformer

51‧‧‧Server

52‧‧‧Server

53‧‧‧Storage equipment

54‧‧‧Storage equipment

SIBCU1‧‧‧ first control signal

SIBCU2‧‧‧ first control signal

SPSCU1‧‧‧second control signal

SPSCU2‧‧‧second control signal

SC1‧‧‧ third control signal

SC2‧‧‧ third control signal

91‧‧‧AC transformer

92‧‧‧AC transformer

93‧‧‧Generator

94‧‧‧Generator

95‧‧‧ Uninterruptible power system

96‧‧‧ Uninterruptible power system

97‧‧‧Power distribution unit

98‧‧‧AC power cabinet

99‧‧‧DC busbar

991‧‧‧Server

992‧‧‧Server

993‧‧‧Storage equipment

994‧‧‧Storage equipment

Other features and effects of the present invention will be apparent from the embodiments of the present invention. FIG. 1 is a block diagram illustrating a conventional AC backup device. FIG. 2 is a block diagram illustrating the present invention. One embodiment of the DC backup device is invented; and FIG. 3 is a block diagram. FIG. 2 illustrates a battery backup unit of the embodiment.

Referring to FIG. 2, an embodiment of the DC backup device of the present invention is suitable for electrically connecting an AC power shelf (AC Power Shelf) 2, a DC bus bar 3, and a plurality of computer devices. The AC power cabinet 2 is electrically connected to one Power Distribution Unit (PDU) 41. The power distribution unit 41 is electrically connected to at least one of the two AC transformers 42, 43 and outputs the AC output power of at least one of the two AC transformers 42, 43 to the AC power cabinet 2.

The AC power cabinet 2 is also electrically connected to the DC bus bar 3 and includes at least one Power Supply Unit (PSU) 22, 23 and a Power Supply Control Unit (PSCU) 21. In this embodiment, the AC power cabinet 2 includes two power supply units 22 and 23 electrically connected to the power distribution unit 41 and the DC bus 3, but not limited thereto. The power cabinet control unit 21 is electrically connected to the power distribution unit 41, the DC bus 3, and the two power supply units 22, 23, and controls at least one of the two power supply units 22, 23 to be The received AC output power is converted into DC output power, and the DC output power is output to the DC bus 3. The voltage value of the DC output power outputted to the DC bus 3 has a voltage target value such that the voltage value of the DC bus 3 is substantially equal to the voltage target value. In this embodiment, the voltage target value is 12.5 volts. , but not limited to this. In particular, since the impedance value of the DC bus bar 3 may not be zero, the voltage value of the DC bus bar 3 may vary slightly depending on the position. Therefore, the voltage value of the DC bus bar 3 is not It must be exactly equal to the voltage target value, but substantially equal to the voltage target value.

The power cabinet control unit 21 also detects the voltage value of the DC bus bar 3. When the power cabinet control unit 21 detects that the voltage value of the DC bus bar 3 is less than a second predetermined voltage, the power cabinet control list Element 21 generates M2 second control signals SPSCU1, SPSCU2 indicating one discharge mode. When the power cabinet control unit 21 detects that the voltage value of the DC bus 3 is within a second predetermined voltage range, the power cabinet control unit 21 generates N second control signals SPSCU1, SPSCU2 indicating one charging mode. Where M2 and N are both positive integers and M2 is not greater than N. In this embodiment, the second predetermined voltage is less than the voltage target value, such as 12.25 volts, and the second predetermined voltage range includes the voltage target value, such as 11.64 to 12.725 volts, but not limited thereto. In addition, in other embodiments, the power cabinet control unit 21 may also detect the AC output power from the power distribution unit 41, for example, when the AC output power is detected to be powered down, When the phase or the three-phase load is unbalanced, the power cabinet control unit 21 generates the M2 second control signals SPSCU1, SPSCU2 indicating the discharge mode.

In this embodiment, the second control signals SPSCU1, SPSCU2 are generated by the power cabinet control unit 21 of the AC power cabinet 2, and in other embodiments, the second control signals SPSCU1, SPSCU2 may also be The host computer is generated. Alternatively, the power cabinet control unit 21 and the upper computer respectively generate two sets of second control signals SPSCU1 and SPSCU2. The upper computer is usually a cabinet management device on the monitoring side, for example, a server in a cabinet or a monitoring device managed by a cabinet.

In this embodiment, the computer equipment includes two servers 51, 52 and two storage devices 53, 54, but the number and type are not limited thereto. The two servers 51, 52 and the two storage devices 53, 54 are electrically connected The DC busbar 3 is connected to receive the DC output power, thereby operating as power.

The DC backup device includes K Battery Backup System (BBS) 1, and K is a positive integer. Each battery backup system 1 includes N battery backup units (BBUs) 12, 13 and an Intelligent BBU Control Unit (IBCU) 11. Each battery backup unit 12, 13 is adapted to electrically connect the DC bus, and the battery backup control unit 11 is also adapted to electrically connect the DC bus 3. The following is a description for convenience. First, K=1 is taken as an example. In addition, FIG. 2 only shows two battery backup units 12, 13, that is, N=2, but not limited thereto.

The battery backup control unit 11 may be disposed outside the N battery backup units 12 and 13, or may be disposed in one of the N battery backup units 12 and 13. Each battery backup unit 12, 13 is electrically connected to the battery backup control unit 11, and provides a status information and a previous self-detection information to the battery backup control unit 11 so that when an input power source is powered off, The battery backup control unit 11 controls at least one of the N battery backup units 12, 13 to provide power to the computer devices.

Referring to FIG. 2 and FIG. 3, each of the N battery backup units 12 and 13 includes a battery module 121, a charging module 122, a discharge module 123, and a microcontroller (Micro Controller; MCU) 124. The battery module 121 of each battery backup unit 12, 13 is used for storing power, for example, including multiple series or parallel or series and parallel and heavy Rechargeable secondary batteries, such as lead storage batteries, lithium ion batteries, etc., but not limited to this. The previous self-discharge test information is, for example, information such as the time point of the last execution of the self-discharge test, and the status information is, for example, that some of the secondary batteries are in compliance with the demand, several are not in compliance with the demand, are faulty, etc. Information such as.

Each of the N battery backup units 12, 13 receives a corresponding first control signal SIBCU1, SIBCU2. When the battery backup unit 12, 13 is operated in an activated state, according to the corresponding first control signal SIBCU1, SIBCU2, or according to the corresponding first control signal SIBCU1, SIBCU2 and the corresponding second control signal SPSCU1 SPSCU2, determines the operation between a discharge mode and a charge mode. When the battery backup unit 12, 13 operates in the discharge mode, the battery backup unit 12, 13 discharges the DC bus bar 3. When the battery backup units 12, 13 operate in the charging mode, the battery backup units 12, 13 take electrical energy from the DC bus bar 3 to be charged.

The charging module 122 of each of the N battery backup units 12 and 13 is electrically connected to the corresponding battery module 121 and the DC bus bar 3, and is controlled in the charging mode to receive the DC sink. The discharged electrical energy charges the battery module 121.

The discharge module 123 of each of the N battery backup units 12 and 13 is electrically connected to the corresponding battery module 121 and the DC bus bar 3, and is controlled in the discharge mode, and the corresponding The amount of electricity stored in the battery module 121 is discharged to the DC bus bar 3 such that the voltage value of the DC bus bar 3 is a third predetermined voltage. In this embodiment, the third pre- The constant voltage is substantially equal to the voltage target value, that is, not completely equal to the voltage target value, such as 12.6 volts, while in other embodiments, the third predetermined voltage may also be exactly equal to the voltage target value.

In this embodiment, the microcontroller 124 of each of the N battery backup units 12 and 13 is electrically connected to the corresponding battery module 121, the corresponding charging module 122, and the corresponding discharge mode. The group 123, the battery backup control unit 11, and the power cabinet control unit 21, and receive the corresponding first control signals SIBCU1, SIBCU2 from the battery backup control unit 11, and the power supply cabinet control unit 21 Corresponding to the second control signals SPSCU1, SPSCU2, and also according to a priority order, according to the corresponding first control signal SIBCU1, SIBCU2, or according to the corresponding first control signal SIBCU1, SIBCU2 and the corresponding The two control signals SPSCU1 and SPSCU2 control the charging module 122 to perform charging on the battery and control the discharging module 123 to discharge the battery. Specifically, FIG. 3 is an example of the battery backup unit 12, and the different battery backup units 12 and 13 respectively have corresponding first control signals SIBCU1, SIBCU2, and the corresponding second control. Signals SPSCU1, SPSCU2, and corresponding third control signals SC1, SC2.

In this embodiment, the priority order is the power cabinet control unit 21 and the battery backup control unit 11, that is, the microcontroller 124 determines according to the second control signals SPSCU1 and SPSCU2 of the power cabinet control unit 21. Operating in the charging mode or the discharging mode, and when the power cabinet control unit 21 is abnormal, the microcontroller 124 Instead, the first control signals SIBCU1, SIBCU2 of the battery backup control unit 11 are determined to operate in the charging mode or the discharging mode. In other words, in the embodiment, the microcontroller 124 determines the first control signals SIBCU1, SIBCU2 and the corresponding second control signals SPSCU1, SPSCU2 according to the priority order.

In other embodiments, if the power cabinet control unit 21 and the upper computer respectively generate two sets of second control signals SPSCU1 and SPSCU2, and the priority order is the upper computer, the power cabinet control unit 21, and the battery backup device. The control unit 11 is configured to determine the second control signal SPSCU1, SPSCU2 according to the upper computer when the upper computer is operating normally, and when the upper computer operates abnormally, the microcontroller 124 is determined according to the second control signals SPSCU1, SPSCU2 of the power cabinet control unit 21, and when the upper computer and the power cabinet control unit 21 operate abnormally, the microcontroller 124 is replaced according to the battery The first control signals SIBCU1, SIBCU2 of the control unit 11 are determined. In addition, it is to be noted that the battery backup control unit 11, the power cabinet control unit 21, and the upper computer have a serial communication busbar electrically connected to each other, such as an Inter-Integrated Circuit (I2C). The battery backup control unit 11 also sends a first confirmation signal to the serial communication bus at a fixed frequency. When the upper computer and the power cabinet control unit 21 receive the first confirmation signal, they do not respond separately. A second acknowledgement signal and a third acknowledgement signal, the battery backup control unit 11 determines that the host computer or the power cabinet control unit 21 is abnormal.

The microcontroller 124 of each of the N battery backup units 12, 13 also receives a corresponding third control signal SC1, SC2 from the battery backup control unit 11 and indicating an activation state, and The voltage value of the DC bus 3 is also detected. When the microcontroller 124 detects that the voltage value of the DC bus 3 is within a fourth predetermined voltage range, and the received third control signals SC1, SC2 indicate the startup state, the battery preparation The aid units 12, 13 operate in this activated state. In this embodiment, the fourth predetermined voltage range includes the voltage target value, such as 12~12.725 volts, but not limited thereto.

The battery backup control unit 11 of the battery backup system 1 detects the voltage value of the DC bus bar 3, and when the battery backup control unit 11 detects that the voltage value of the DC bus bar 3 is at a third predetermined voltage When the range is within, the battery backup control unit 11 generates the M3 third control signals SC1 and SC2 indicating the startup state, and transmits the M3 third control signals SC1 and SC2 to the N battery backup units. Among the 12, 13 M3 of the microcontroller 124. M3 is a positive integer and not greater than N. In this embodiment, the third predetermined voltage range includes the voltage target value, such as 12~12.725 volts, but not limited thereto. In addition, in this embodiment, the battery backup control unit 11 can generate M3 third control signals SC1 and SC2 to determine whether the N battery backup units 12 and 13 operate. a startup state, and in other embodiments, the battery backup control unit 11 may also generate only a third control signal and transmit the third control signal to each of the N battery backup units 12, 13. .

In addition, when the battery backup control unit 11 detects the DC When the voltage value of the bus bar 3 is less than a first predetermined voltage, the battery backup control unit 11 determines that the input power source is powered off, and generates the M1 first control signals SIBCU1, SIBCU2 indicating the discharge mode, and M1 is a positive integer. And M1 is not greater than N. When the battery backup control unit 11 detects that the voltage value of the DC bus 3 is within a first predetermined voltage range, the battery backup control unit 11 generates the N first control signals SIBCU1 indicating the charging mode. SIBCU2. The first predetermined voltage range includes the voltage target value. In this embodiment, the first predetermined voltage is less than the voltage target value, such as 12.25 volts, and the first predetermined voltage range includes the voltage target value, such as 11.64 to 12.725 volts (including 12 volts), but not limited thereto.

It should be additionally noted that when one of the N battery backup units 12, 13 operates in the discharge mode, and the battery backup unit is removed, replaced, or fails, the battery backup control The unit 11 adjusts the remaining of the N battery backup units 12, 13 to operate in the discharge mode. In other words, the battery backup control unit 11 adjusts according to the states of the N battery backup units 12, 13. A suitable number of battery backup units 12, 13 provide power to the computer devices.

The battery backup control unit 11 of the battery backup system 1 also stores the status information of the N battery backup units 12, 13 and the previous self-detection information. When the K is greater than 1, the battery backup control unit 11 of the K battery backup system 1 is electrically connected to each other, for example, may be electrically connected to each other, or may be electrically connected in a bus bar manner, as long as the Any of the K battery backup control units 11 can transmit information to each other. When the battery backup unit of the K battery backup system 1 12, 13 operation In the startup state, one of the K battery backup systems 1 will serve as a master control system (Master), and each of the remaining (K-1) battery backup systems 1 As a slave system (Slave), the battery backup control unit 11 of the battery backup system 1 as the master control system can obtain the battery backups of the battery backup systems 1 as the slave systems. Controlling the status information stored by the control unit 11 and the prior self-test information, and controlling the battery backup control unit 11 as the slave systems based at least on the status information and the prior self-test information. The battery backup unit 12, 13 operates in the discharge mode and the charging mode. In other words, the battery backup control unit 11 of the battery backup system 1 as the master control system detects or collects the operating states of all the battery backup units of the K battery backup systems 1, and the K The battery backup control unit 11 can work in cooperation to reduce the management burden of the single battery backup control unit 11.

In addition, in the embodiment, the at least one power supply unit 22, 23 included in the AC power supply cabinet 2 to which the DC backup device is applied is an AC-to-DC power supply, in other In an embodiment, the at least one power supply unit 22, 23 may also be a DC-to-DC power supply, and is not limited thereto.

Furthermore, in the foregoing description, the microcontroller 124 of each of the N battery backup units 12, 13 may be based on the corresponding first control signal SIBCU1 from the battery backup control unit 11. SIBCU2 determines the operation in this charging mode and the discharging mode. Alternatively, the microcontroller 124 of each of the N battery backup units 12, 13 The charging mode and the discharging mode may be determined according to the corresponding first control signals SIBCU1, SIBCU2 and the corresponding second control signals SPSCU1, SPSCU2 from the power cabinet control unit 21. In other embodiments, the microcontroller 124 of each of the N battery backup units 12, 13 may firstly be based on the corresponding first control signal SIBCU1, SIBCU2 and the corresponding second control signal SPSCU1. , SPSCU2, determines the operation in the charging mode and the discharging mode. When an abnormality occurs in the power cabinet control unit 21 of the AC power cabinet 2, the microcontroller 124 of each of the N battery backup units 12, 13 is changed to be based only on the corresponding first control signal SIBCU1. , SIBCU2, determines to operate in the charging mode and the discharging mode.

In this embodiment, the power cabinet control unit 21 is disposed in the AC power cabinet 2, but in other embodiments, the power cabinet control unit 21 can also be replaced by another control unit, and the control unit The connection and operation mode are similar to the power cabinet control unit 21, except that the control unit is disposed on a host computer. The upper computer can usually be a cabinet management device on the monitoring end, for example, a server in a cabinet or a monitoring device managed by a cabinet.

In summary, the plurality of battery backup systems of the DC backup device replace the plurality of uninterruptible power systems of the AC backup device, which not only has a small device, is easy to install, and has a relatively high conversion efficiency. Good advantage, more importantly, when the power cabinet control unit of the AC power cabinet fails, or even if there is no power cabinet control unit, the battery backup control unit can normally control the battery backup unit Since the discharge mode and the charging mode are operated to greatly improve the reliability of the system, the object of the present invention can be achieved.

The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, and the simple equivalent changes and modifications made by the scope of the patent application and the patent specification of the present invention are It is still within the scope of the invention patent.

1‧‧‧Battery backup system

11‧‧‧Battery Backup Control Unit

12‧‧‧Battery backup unit

13‧‧‧Battery backup unit

2‧‧‧AC power cabinet

21‧‧‧Power cabinet control unit

22‧‧‧Power supply unit

23‧‧‧Power supply unit

3‧‧‧DC busbar

41‧‧‧Power distribution unit

42‧‧‧AC transformer

43‧‧‧AC transformer

51‧‧‧Server

52‧‧‧Server

53‧‧‧Storage equipment

54‧‧‧Storage equipment

SIBCU1‧‧‧ first control signal

SIBCU2‧‧‧ first control signal

SPSCU1‧‧‧second control signal

SPSCU2‧‧‧second control signal

SC1‧‧‧ third control signal

SC2‧‧‧ third control signal

Claims (6)

A DC backup device is suitable for electrically connecting a server, and is also applicable to a DC bus bar electrically connected between the DC backup device and the server, and is also suitable for electrically connecting an AC power cabinet, and an input power source Powering the DC bus to the server, the DC backup device includes a battery backup system, the battery backup system includes N battery backup units and a battery backup control unit, where N is a positive integer, where The battery backup control unit may be disposed outside the N battery backup units, or may be disposed in one of the N battery backup units, and each battery backup unit is electrically connected to the battery backup control unit. And providing a status information and a previous self-test information to the battery backup control unit, such that when the input power is powered off, the battery backup control unit controls at least one of the N battery backup units Providing power to the server, each of the N battery backup units being adapted to electrically connect the DC bus and receiving a corresponding first control signal When the battery backup unit operates in an activated state, determining to operate between a discharge mode and a charging mode according to the corresponding first control signal, when the battery backup unit operates in the discharge mode, The battery backup unit discharges the DC bus, and when the battery backup unit operates in the charging mode, the battery backup unit obtains electric energy from the DC bus and charges. The battery backup control unit is configured to electrically connect the DC bus bar to detect the voltage value of the DC bus bar, and also electrically connect the N battery backup units, when the battery backup control unit detects the DC When the voltage value of the bus bar is less than a first predetermined voltage, the battery backup control unit determines that the input power source is powered off, and generates the M1 first control signals indicating the discharge mode, where M1 is a positive integer and M1 is not greater than N. When the battery backup control unit detects that the voltage value of the DC bus is at a first predetermined voltage range, the battery backup control unit generates the N first control signals indicating the charging mode, when the N The battery backup control unit adjusts the remaining of the N battery backup units when one of the battery backup units operates in the discharge mode and the battery backup unit is removed, replaced, or fails Operating in the discharge mode to provide power to the server, the AC power cabinet includes a power cabinet control unit electrically connected to the DC bus bar to detect the voltage value of the DC bus bar When the power cabinet control unit detects that the voltage value of the DC bus is less than a second predetermined voltage, the power cabinet control unit generates the M2 second control signals indicating the discharge mode, where M2 is a positive integer and M2 is not When the power cabinet control unit detects that the voltage value of the DC bus is in a second predetermined voltage range, the power cabinet control unit generates the N second control signals indicating the charging mode, and the battery preparation device Each battery backup unit of the assistance system is further electrically connected to the power cabinet control unit to receive the corresponding second control signal, When the battery backup unit operates in the activated state, determining the operation in the discharge mode and the charging mode according to the corresponding first control signal and the corresponding second control signal. The DC backup device of claim 1, wherein each battery backup unit of the battery backup system comprises: a battery module for storing power; a charging module electrically connecting the battery module and the DC a bus bar, and when controlled in the charging mode, charging the battery module with the power of the DC bus; a discharge module electrically connecting the battery module and the DC bus bar and being controlled in the discharging mode And discharging the power stored in the battery module to the DC bus, so that the voltage value of the DC bus bar is a third predetermined voltage; and a microcontroller electrically connecting the battery module and the charging module Receiving, corresponding to the first control signal from the battery backup control unit, a second control signal, and also according to a priority order, to determine whether the corresponding first control signal or the corresponding first control signal and the corresponding second control signal are And controlling the charging module to perform charging on the battery and controlling the discharging module to discharge the battery. The DC backup device of claim 2, wherein the battery backup control unit of the battery backup system detects When the voltage value of the DC bus is within a third predetermined voltage range, the battery backup control unit further generates a third control signal indicating the startup state, and transmits the third control signal to each battery backup. The microcontroller of the unit, the microcontroller of each battery backup unit of the battery backup system is also electrically connected to the DC bus bar to detect the voltage value of the DC bus bar, when the microcontroller detects The battery backup unit operates in the activated state when the voltage value of the DC bus is within a fourth predetermined voltage range and the received third control signal indicates the startup state. The DC backup device of claim 3, wherein the battery backup control unit of the battery backup system further stores the status information of the N battery backup units and the previous self-test information. The DC backup device according to claim 4, further comprising (K-1) the battery backup system, wherein K is a positive integer and greater than 1, the battery backup control unit of the K battery backup system is electrically connected to each other Connecting, and when the battery backup units of the K battery backup systems operate in the startup state, one of the K battery backup systems acts as a master control system, and the rest (K-1) Each of the battery backup systems acts as a slave system, and the battery backup control unit of the battery backup system of the master control system can obtain the battery backup system as the slave systems And the status information and the previous self-test information stored by the battery backup control unit, and at least based on the status information and the prior self-test information, as such The battery backup units of the battery backup control units of the slave system operate in the discharge mode and the charging mode. The DC backup device, as described in claim 1, is further configured to be electrically connected to an AC power cabinet, where the AC power cabinet includes a power cabinet control unit, and when the power cabinet control unit detects that the input power is powered off, The power cabinet control unit generates a plurality of control signals, wherein the battery backup units of the battery backup system are also electrically connected to the power cabinet control unit to receive the control signals, and provide power to the server.