The invention relates to the technical field of battery charging, and provides a direct-current boost charging circuit of a power battery and a control method of the direct-current boost charging circuit. The DC boost charging circuit comprises a commercial power rectification unit, a high-frequency inversion rectification unit, a support capacitor, a DC charging interface, a first switch unit, a second switch unit and a power battery. The output end of the commercial power rectification unit is connected with the input end of the high-frequency inversion rectification unit, the support capacitor is connected between the commercial power rectification unit and the high-frequency inversion rectification unit, and the output end of the high-frequency inversion rectification unit is connected with the power battery; the output end of the direct-current charging interface is connected with the power battery, and a first switch unit is arranged between the output end of the direct-current charging interface and the power battery; the output end of the DC charging interface is connected to the output end of the commercial power rectification unit. The second switch unit is arranged between the output end of the DC charging interface and the output end of the commercial power rectification unit. According to the invention, the output voltage of the direct-current charging equipment lower than the battery voltage can be boosted.
本申请涉及电池充电技术领域,提供一种动力电池的直流升压充电电路及其控制方法。所述直流升压充电电路包括:市电整流单元、高频逆变整流单元、支撑电容、直流充电接口、第一开关单元、第二开关单元和动力电池;市电整流单元的输出端与高频逆变整流单元的输入端连接,支撑电容连接于市电整流单元与高频逆变整流单元之间,高频逆变整流单元的输出端与动力电池连接;直流充电接口的输出端与动力电池连接,直流充电接口的输出端与动力电池之间设置有第一开关单元;直流充电接口的输出端接入市电整流单元的输出端,第二开关单元设置在直流充电接口的输出端与市电整流单元的输出端之间。本申请能够对低于电池电压的直流充电设备输出电压进行升压。
Direct-current boost charging circuit of power battery and control method of direct-current boost charging circuit
动力电池的直流升压充电电路及其控制方法
2022-12-30
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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