The control circuit comprises a step-down circuit, a resonance circuit and a switch control circuit, the step-down circuit is electrically connected with a battery load, the resonance circuit is electrically connected with the step-down circuit, and the switch control circuit is electrically connected with the step-down circuit. The switch control circuit is electrically connected with the step-down circuit and the resonance circuit. The step-down circuit comprises a power switch tube Q1, a power switch tube Q2, an inductor L1 and a capacitor C1. The resonance circuit comprises a capacitor C2, a capacitor C3, an inductor L2 and an inductor L3. And the switch control circuit is used for controlling the on or off of the power switch tube Q1 and the power switch tube Q2. The non-isolated inductor is adopted to replace a transformer, so that on one hand, the coil size is reduced, and on the other hand, corresponding coil loss and magnet loss are reduced. The charging power and the charging efficiency are increased through the optimized topology, and the charging power is doubled by matching with a high-voltage direct-current pile on the premise that the size is not changed or is smaller than that of a current charging device.
本发明公开了一种一种车载充电器的控制电路、车载充电器和电动车,包括降压电路,谐振电路,开关控制电路,其中:所述降压电路电连接电池负载,所述谐振电路电连接所述降压电路,所述开关控制电路分别与所述降压电路和所述谐振电路电连接。降压电路包括功率开关管Q1、功率开关管Q2、电感L1、电容C1。谐振电路包括电容C2、电容C3、电感L2和电感L3。开关控制电路用于控制功率开关管Q1和功率开关管Q2的开启或关闭。通过采用非隔离式电感替代变压器,一方面减小了的线圈体积,另一方面减少了相应的线圈损耗和磁体损耗。通过优化后的拓扑增加了充电功率和充电效率,在体积不变或者小于当前充电装置的前提下搭配高压直流桩将充电功率提升一倍。
Control circuit of vehicle-mounted charger, vehicle-mounted charger and electric vehicle
一种车载充电器的控制电路、车载充电器和电动车
2023-09-19
Patent
Elektronische Ressource
Chinesisch
IPC: | H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen |
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