The invention discloses a battery pack double-pre-charging high-voltage circuit, a control system of the battery pack double-pre-charging high-voltage circuit and an electric automobile, relates to the technical field of power battery systems of the electric automobiles, and solves the problems of adhesion of a charging relay of the electric automobile and the like caused by difference of compatibility and matching of the electric automobile and a rapid direct-current charging pile. The system comprises a battery pack, a fuse, a charging cathode relay, a charging pre-charging relay, a charging pre-charging group, a charging anode relay, a cathode relay, a discharging pre-charging relay, a charging pre-charging group and an anode relay. When the rapid direct-current charging pile is used for charging, under the condition that the relay in the direct-current rapid charging pile is adhered and the capacitive load of the charging module is not isolated by the relay, the last closed relay in the negative electrode relay, the charging negative electrode relay and the charging positive electrode relay during charging is started; and therefore, the charging reliability of the electric vehicle can be improved.
电池包双预充高压电路及其控制系统、电动汽车,涉及电动汽车动力电池系统技术领域,解决由于电动汽车和快速直流充电桩兼容匹配性存在差异性的问题,导致电动汽车的充电继电器粘连等问题,高压电路包括控制电源,电池管理器,电池组,熔断器,充电负极继电器,充电预充继电器,充电预充电组,充电正极继电器,负极继电器,放电预充继电器,充电预充电组和正极继电器。本发明在使用快速直流充电桩充电时,解决直流快速充电桩内继电器发生粘连无继电器隔离充电模块的容性负载的情况下,在启动充电时负极继电器、充电负极继电器、充电正极继电器其中最后闭合的继电器,造成最后闭合的继电器触点造成粘连的问题,提升电动汽车充电的可靠性。
Battery pack double-pre-charging high-voltage circuit, control system thereof and electric automobile
电池包双预充高压电路及其控制系统、电动汽车
2022-05-10
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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