According to the overvoltage protection circuit and the AC charging pile provided by the invention, the overvoltage protection circuit is connected with the positive wire and the negative wire at the input side of the power supply module, and when an overvoltage problem occurs between the positive wire and the negative wire due to a wire connection error between a power grid and the AC charging pile, the overvoltage starting unit outputs a turn-off signal to the switch unit; and the switch unit is used for switching off the access of the negative wire and/or the positive wire, so that overvoltage in the circuit is prevented from damaging devices of the alternating current charging pile. Therefore, the alternating current charging pile is protected through the overvoltage protection circuit, the problem that devices of the alternating current charging pile are damaged due to wire connection errors between the power grid and the alternating current charging pile is avoided, and the long service life of the alternating current charging pile is guaranteed.
本发明提供了一种过压保护电路及交流充电桩,将过压保护电路与电源模块的输入侧的正极线和负极线相连,当电网和交流充电桩间因搭线错误而出现正极线和负极线之间过压问题时,过压开启单元输出关断信号至开关单元,开关单元以将负极线和/或正极线的通路关断,进而避免线路中的过压损坏交流充电桩的器件。由此,通过过压保护电路对交流充电桩进行保护,避免了由于电网和交流充电桩间搭线错误而导致交流充电桩的器件损坏的问题,保证交流充电桩的使用寿命长。
Overvoltage protection circuit and alternating current charging pile
一种过压保护电路及交流充电桩
2024-03-29
Patent
Elektronische Ressource
Chinesisch
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