The invention provides a bidirectional charging pile, a power supply system based on the bidirectional charging pile and a power supply method, and belongs to the field of charging piles. Comprising a multi-winding industrial frequency transformer, a bidirectional AC/DC converter, a controller, a first control switch, a second control switch, a charging gun and an energy storage battery. The high-voltage side of the multi-winding industrial frequency transformer is connected with a power grid through a switch cabinet, the low-voltage side of the multi-winding industrial frequency transformer is provided with a plurality of groups of mutually isolated windings, and the plurality of groups of mutually isolated windings are respectively provided with a bidirectional AC/DC converter; the bidirectional AC/DC converter is connected with the charging gun through the first control switch. The bidirectional AC/DC converter is also connected with the energy storage battery through a second control switch; the controller is electrically connected with the multi-winding industrial frequency transformer, the switch cabinet, the bidirectional AC/DC converter, the first control switch and the second control switch. High-frequency isolation is replaced by power frequency isolation, so that the failure rate of the bidirectional charging pile is reduced. And the bidirectional AC/DC converter can be used for outputting relatively high power, so that the cost of the bidirectional charging pile is reduced.
本发明提供一种双向充电桩、基于双向充电桩的供电系统及供电方法,属于充电桩领域。包括多绕组工频变压器、双向AC/DC转换器、控制器、第一控制开关、第二控制开关、充电枪、储能电池;多绕组工频变压器的高压侧通过开关柜与电网连接,多绕组工频变压器的低压侧有多组相互隔离的绕组,多组相互隔离的绕组分别配有双向AC/DC转换器;双向AC/DC转换器通过第一控制开关与充电枪连接;双向AC/DC转换器还通过第二控制开关与储能电池连接;控制器分别与多绕组工频变压器、开关柜、双向AC/DC转换器、第一控制开关、第二控制开关电气连接。本发明利用工频隔离代替高频隔离,降低了双向充电桩的故障率。利用双向AC/DC转换器即可输出较大的功率,降低了双向充电桩的成本。
Bidirectional charging pile, power supply system based on bidirectional charging pile and power supply method
双向充电桩、基于双向充电桩的供电系统及供电方法
2024-10-01
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
Bidirectional power supply circuit suitable for electric vehicle AC charging pile
European Patent Office | 2020
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