The invention provides a bidirectional power supply circuit suitable for an electric vehicle AC charging pile, which is characterized by comprising a switching power supply main body and a power-taking switching circuit, wherein the power-taking switching circuit is a double-pole double-throw relay K; the switching power supply main body is connected with a first movable contact and a second movable contact of the relay K; a first normally-closed contact and a second normally-closed contact of the relay K are connected with the input end of the charging pile; a first normally-open contact anda second normally-open contact of the relay K are connected with the output end of the charging pile; and a coil of the relay K is connected with the output end of the charging pile. The circuit is simple in structure and has a bidirectional power taking function, power taking of the input end of the charging pile and power taking of the output end of the charging pile are completely and autonomously switched, meanwhile, the insulation and voltage resistance of the input end and the output end of the charging pile are not affected, the circuit size is small, and the circuit can be placed on amainboard in the portable charging pile.
本发明提供了一种适用于电动汽车交流充电桩的双向电源电路,其特征在于:包括开关电源主体和取电切换电路,所述取电切换电路为双刀双掷继电器K,开关电源主体分别连接继电器K的动触点一和动触点二,继电器K的常闭触点一和常闭触点二连接充电桩输入端,继电器K的常开触点一和常开触点二连接充电桩输出端,继电器K的线圈连接充电桩输出端。本发明电路结构简单,具有双向取电功能,充电桩输入端取电和充电桩输出端取电完全自主切换,同时本发明不影响充电桩输入端和输出端的绝缘耐压性能,电路体积较小,能够放入便携式充电桩内主板上。
Bidirectional power supply circuit suitable for electric vehicle AC charging pile
一种适用于电动汽车交流充电桩的双向电源电路
2020-05-19
Patent
Electronic Resource
Chinese
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