The invention discloses a bidirectional vehicle-mounted charging circuit and a circuit control method. The topology comprises a front-stage totem-pole bridgeless PFC and a rear-stage bidirectional CLLC converter; the bidirectional totem-pole bridgeless PFC converter is connected with a 220V single-phase power grid; the rear-stage bidirectional CLLC converter is connected with the bidirectional totem-pole bridgeless PFC converter; the forward resonance link and the reverse resonance link of the rear-stage bidirectional CLLC converter are the same so that soft switching can be achieved conveniently, and the rear-stage bidirectional CLLC converter is finally connected with the power battery of the electric vehicle and is combined with the front-stage totem-pole bridgeless PFC to charge the power battery. According to the invention, the vehicle-mounted charging circuit has G2V and V2G functions, the output voltage range is adjustable in a range of 300V-500V, and the applicability and the safety are improved.
本发明公开的双向车载充电电路及电路控制方法,拓扑包括前级图腾柱无桥PFC和后级双向CLLC变换器;双向图腾柱无桥PFC变换器与220V单相电网相连接;后级双向CLLC变换器与双向图腾柱无桥PFC变换器相连接;后级双向CLLC变换器的正反向谐振环节相同,以便于软开关的实现,后级双向CLLC变换器最终与电动汽车动力电池相连接,联合前级图腾柱无桥PFC为动力电池充电。本发明使车载充电电路具备G2V、V2G功能,而且输出电压范围在300V‑500V范围内可调,提高了适用性和安全性。
Bidirectional vehicle-mounted charging circuit and circuit control method
双向车载充电电路及电路控制方法
03.06.2025
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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