The invention relates to the technical field of power supply control, and discloses a vehicle low-voltage power supply system and a control method. Fault detection is carried out on the DCDC converter, the main storage battery and the auxiliary storage battery, and a fault power supply loop and a normal power supply loop are determined; and switching a fault power supply loop to the normal power supply loop according to the current state. The power supply circuit comprises a power supply circuit of a main storage battery, a power supply circuit of an auxiliary storage battery and a power supply circuit of DCDC, and redundant design of the power supply circuits is formed. Whether the DCDC, the main storage battery or the auxiliary storage battery breaks down or not is detected through the detection module, the power supply loop is switched after the fault occurs, and therefore when a certain loop is powered off, other normal power supply loops can be used for maintaining vehicle operation, potential safety hazards are reduced, and property losses are reduced.
本申请涉及电源控制技术领域,公开了一种车辆低压供电系统和控制方法,方法包括:获取车辆当前状态;对DCDC转换器、主蓄电池和辅助蓄电池进行故障检测,确定故障供电回路和正常供电回路;根据所述当前状态,将故障供电回路切换到所述正常供电回路。本申请包括主蓄电池的供电回路、辅助蓄电池的供电回路和DCDC的供电回路,形成供电回路的冗余设计。通过检测模块检测DCDC、主蓄电池或者辅助蓄电池是否发生故障,并在故障后切换供电回路,从而在某条回路断电时,可以利用其它正常的供电回路维持车辆运行,降低安全隐患,减少财产损失。
Vehicle low-voltage power supply system and control method
一种车辆低压供电系统和控制方法
11.04.2025
Patent
Elektronische Ressource
Chinesisch
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