一种大功率充放电一体柜

Abstract

本实用新型公开了一种大功率充放电一体柜，包括：柜体，柜体内设有：多个电池组、与多个电池组一一对应电连接的储能变流器模块、直流输出单元、交流输出单元、不间断电源模块和控制单元；多个储能变流器模块与直流输出单元、交流输出单元和不间断电源模块并联于柜内的交流电网输入端，不间断电源模块与控制单元电连接，控制单元与储能变流器模块通过CAN总线通信连接，且每个储能变流器模块的PFC‑CAN接口并联，每个储能变流器模块的SYN‑CAN接口并联；实现了多模块间功率因数校正参数的协同同步和输出电压相位、频率的一致性，有效避免了多模块并联运行时的无功损耗与环流问题。

Claims

1. A high-power charging and discharging integrated cabinet, characterized in that, include: Cabinet, the cabinet containing: Multiple battery packs, an energy storage converter module electrically connected to each of the multiple battery packs, a DC output unit, an AC output unit, an uninterruptible power supply module, and a control unit; Multiple energy storage converter modules are connected in parallel with the DC output unit, AC output unit, and uninterruptible power supply module at the AC grid input terminal inside the cabinet. The uninterruptible power supply module is electrically connected to the control unit. The control unit is connected to the energy storage converter module via a CAN bus. The PFC-CAN interface of each energy storage converter module is connected in parallel, and the SYN-CAN interface of each energy storage converter module is connected in parallel. The energy storage converter module is used to convert the AC power supplied from the AC grid input terminal into DC power to charge the corresponding battery pack, and to convert the DC power output from the corresponding battery pack into AC power to supply the DC output unit, AC output unit and uninterruptible power supply module. The uninterruptible power supply module is used to convert the AC power supplied by the energy storage converter module or the AC grid input terminal into DC power, so as to provide stable and uninterrupted power to the control unit. The DC output unit is used to convert the AC power output by the energy storage converter module into DC power to supply the DC load. The AC output unit is used to provide the AC power output by the energy storage converter module to the AC load; The control unit is used to control the start and stop of the energy storage converter module.

2. The high-power charging and discharging integrated cabinet according to claim 1, characterized in that, Also includes: Interlocked first and second AC switches; The energy storage converter module and the uninterruptible power supply module are connected to the AC grid input terminal through the first AC switch; The DC output unit and the AC output unit are connected to the first AC switch via the second AC switch.

3. The high-power charging and discharging integrated cabinet according to claim 2, characterized in that, Also includes: Multiple third AC switches, each corresponding to one of the energy storage converter modules, are provided. The energy storage converter modules are connected to the first AC switch via the third AC switches.

4. The high-power charging and discharging integrated cabinet according to claim 3, characterized in that, Also includes: Multiple first fuses, each corresponding to one of the energy storage converter modules, are respectively disposed between the energy storage converter module and the battery pack.

5. The high-power charging and discharging integrated cabinet according to claim 4, characterized in that, Also includes: Multiple first DC switches and second DC switches that correspond one-to-one with the battery pack; The first DC switch is located between the discharge port of the battery pack and the first fuse; The second DC switch is located between the charging interface of the battery pack and the first fuse.

6. The high-power charging and discharging integrated cabinet according to claim 5, characterized in that, The DC output unit includes: Multiple DC output modules, each of the DC output modules comprising: The first meter, the fourth AC switch, the AC to DC converter, the second fuse, the third DC switch, and the DC charging gun are connected in sequence. The input terminal of the first meter is connected to the output terminal of the second AC switch.

7. The high-power charging and discharging integrated cabinet according to claim 6, characterized in that, The AC output unit includes: Second electricity meter and AC load circuit breaker, AC load connector and AC load socket; The AC load circuit breaker, AC load connector, and AC load socket are connected in parallel to the output terminal of the second meter, and the input terminal of the second meter is connected to the output terminal of the second AC switch.

8. The high-power charging and discharging integrated cabinet according to claim 7, characterized in that, The control unit includes: Multiple charging controllers and power distribution modules that correspond one-to-one with the energy storage converter module; The CAN interface of the energy storage converter module is communicatively connected to the first CAN interface of the power distribution module, and the CAN interface of the charging controller is communicatively connected to the second CAN interface of the power distribution module. The charging controller is used to send control commands to the power distribution module in response to user instructions; The power distribution module is used to control the start and stop of the corresponding energy storage converter module based on the control commands of the charging controller, and to monitor the operating status of the energy storage converter module and upload it to the corresponding charging controller.

9. The high-power charging and discharging integrated cabinet according to claim 8, characterized in that, Also includes: The human-machine interface is located on the outer surface of the cabinet and is communicatively connected to the charging controller. The human-machine interface is used to receive user commands and send them to the charging controller, as well as to receive and visualize the operating status data sent by the charging controller.

10. The high-power charging and discharging integrated cabinet according to claim 9, characterized in that, Each of the charging controllers communicates with the third AC switch connected to the corresponding energy storage converter module via an I / O interface to control the on / off state of the third AC switch.

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