The invention discloses a vehicle low-voltage power supply system and a low-voltage power supply method. The system comprises a storage battery; the current conversion DCDC module comprises a plurality of DCDCs, and the plurality of DCDCs are connected with the storage battery in parallel so as to be used for being connected with an electric load of the whole vehicle; and the power domain controller PDCU is used for enabling a single DCDC to supply power to the electric load of the whole vehicle according to the electric power of the electric load of the whole vehicle, or enabling a plurality of DCDCs to be output in a balanced manner to supply power to the electric load of the whole vehicle together with the storage battery. The plurality of DCDCs are connected with the storage battery in parallel, when a single DCDC breaks down, other DCDCs can work normally to supply power to the low-voltage load, the stability of DCDC power supply and low-voltage power supply system power supply is improved, the plurality of DCDCs or the single DCDC is selected according to the power utilization power of the whole vehicle power utilization load to supply power to the whole vehicle power utilization load, and the vehicle energy consumption can be reduced while power supply is guaranteed.
本申请公开了一种车辆低压供电系统和低压供电方法,该系统包括:蓄电池;电流转换DCDC模块,其包括多个DCDC,所述多个DCDC与所述蓄电池相互并联,以用于与整车用电负载连接;动力域控制器PDCU,其用于根据所述整车用电负载的用电功率使能单个DCDC为所述整车用电负载供电,或使能多个DCDC均衡输出与所述蓄电池共同为所述整车用电负载供电。多个DCDC与蓄电池相互并联,在单个DCDC出现故障时,其他DCDC能够正常工作为低压负载供电,提高了DCDC供电和低压供电系统供电的稳定性,并且根据整车用电负载的用电功率选择多个DCDC或单个DCDC为整车用电负载供电,能够在保障供电的同时降低车辆能耗。
Vehicle low-voltage power supply system and low-voltage power supply method
一种车辆低压供电系统和低压供电方法
2023-07-18
Patent
Electronic Resource
Chinese
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