The invention relates to a vehicle emergency charging system, a control method and a vehicle. The vehicle emergency charging system comprises an alternating current charging module connected with an alternating current charging interface and a power battery, a direct current conversion module connected with the alternating current charging module and a low-voltage storage battery, the low-voltage storage battery used for low-voltage power supply of the whole vehicle and an auxiliary power supply circuit; when the low-voltage storage battery feeds electricity, electricity is taken from the alternating current charging interface through the auxiliary power supply circuit, and alternating current is converted into low-voltage electricity through the auxiliary power supply circuit so as to supply power to the control unit of the alternating current charging module and the control unit of the direct current conversion module. And the auxiliary power supply circuit is separated from the normal power supply loop, and is only used for supplying power to the low-voltage load of the whole vehicle, so that the power of the auxiliary power supply circuit can be reduced, the device size and cost are reduced, the auxiliary power supply circuit is controlled to supply power stably, and the power supply safety of the charging system is ensured.
本申请涉及一种车辆应急充电系统、控制方法及车辆,车辆应急充电系统包括:与交流充电接口和动力电池连接的交流充电模块,与交流充电模块和低压蓄电池连接的直流转换模块、用于整车低压供电的低压蓄电池以及辅助电源电路,在低压蓄电池馈电时,通过辅助电源电路在交流充电接口取电,经辅助电源电路将交流电转换为低压电,以向交流充电模块的控制单元和直流转换模块的控制单元供电,在原有的充电系统拓扑上进行优化融合,且将辅助电源电路与正常供电回路分开,辅助电源电路仅用于整车的低压负载供电,可以降低辅助电源电路的功率,减少器件体积及成本,并且控制辅助电源电路供电稳定,保证充电系统供电安全。
Vehicle emergency charging system, control method and vehicle
车辆应急充电系统、控制方法及车辆
2022-07-01
Patent
Electronic Resource
Chinese
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 / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |
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