The invention discloses a vehicle-mounted charging system of an electric vehicle. The system comprises a three-phase power supply, a first three-phase motor, a first three-phase inverter, a second three-phase inverter, a second three-phase motor, a battery pack, a first contactor, a second contactor, a third contactor and a fourth contactor which are sequentially connected in series. The three-phase power supply comprises an upper power supply, a middle power supply and a lower power supply, and the first three-phase motor comprises an upper winding, a middle winding and a lower winding. One end of the first contactor is connected with the upper winding, and the other end is connected with an upper power supply or the middle winding. One end of the second contactor is connected with the middle winding, and the other end is connected with a middle power supply or the lower winding. One end of the third contactor is connected with the lower power supply, and the other end is connected with the lower winding. And one end of the fourth contactor is connected with the battery pack, and the other end is connected with the second three-phase motor or the second three-phase inverter. Charging operation can be completed without additionally arranging an inductor, the structure is simple, the size is small, and the production cost is low.
本发明公开了一种电动汽车车载充电系统,该系统包括:顺次串联的三相电源、第一三相电机、第一三相逆变器、第二三相逆变器、第二三相电机、电池组、第一接触器、第二接触器、第三接触器、第四接触器。三相电源包括上路电源、中路电源和下路电源,第一三相电机包括上绕组、中绕组和下绕组。第一接触器的一端与上绕组连接,另一端用于与上路电源或中绕组连接。第二接触器的一端与中绕组连接,另一端用于与中路电源或下绕组连接。第三接触器的一端与下路电源连接,另一端与下绕组连接。第四接触器的一端与电池组连接,另一端与第二三相电机或第二三相逆变器连接。本发明无需额外增加电感器即可完成充电作业,结构简单,体积较小,生产成本较低。
Vehicle-mounted charging system of electric vehicle
一种电动汽车车载充电系统
2021-03-05
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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