The invention discloses a low-voltage power supply control method and a low-voltage power supply system, and the method comprises the steps: obtaining the state information of a power module of a vehicle, and the state information of the power module comprises the configuration state information of a lead-acid battery; selecting a plurality of battery cells of which the capacities are greater than a preset capacity value from the lithium battery pack as auxiliary batteries; and if the vehicle is provided with the lead-acid battery, executing the first power supply strategy or the second power supply strategy. The first power supply strategy comprises controlling the lead-acid battery to supply power to the load. The second power supply strategy comprises controlling the lead-acid battery to supply power to the load; and if the voltage of the lead-acid battery is higher than a preset first voltage threshold or lower than a preset second voltage threshold and the single voltage of the auxiliary battery is within a preset normal power supply voltage range, switching the auxiliary battery to supply power to the load. If the vehicle is not provided with the lead-acid battery, executing a third power supply strategy; the third power supply strategy comprises controlling the auxiliary battery to supply power to the load. And the situation that the vehicle cannot be normally started due to power shortage or faults of the lead-acid battery under a single power supply strategy is avoided.
本申请公开了一种低压供电控制方法及低压供电系统,包括:获取车辆的电源模块状态信息,电源模块状态信息包括铅酸电池配置状态信息;从锂电池组中选取容量大于预设容量值的多个电芯作为辅助电池;若车辆配置有铅酸电池,执行第一供电策略或第二供电策略。第一供电策略包括:控制铅酸电池对负载供电。第二供电策略包括:控制铅酸电池对负载供电;若铅酸电池的电压高于预设第一电压阈值或低于预设第二电压阈值,且辅助电池的单体电压在预设正常供电电压范围内,切换辅助电池对负载供电。若车辆未配置铅酸电池,执行第三供电策略;第三供电策略包括:控制辅助电池对负载供电。避免在单一供电策略下由于铅酸电池亏电或故障而导致车辆无法正常启动。
Low-voltage power supply control method and low-voltage power supply system
低压供电控制方法及低压供电系统
23.07.2024
Patent
Elektronische Ressource
Chinesisch
IPC: | B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung |
Vehicle low-voltage power supply system and low-voltage power supply method
Europäisches Patentamt | 2023
|Dual-voltage power supply system for vehicle and control method of dual-voltage power supply system
Europäisches Patentamt | 2023
|POWER SUPPLY SYSTEM, VEHICLE AND VOLTAGE CONTROL METHOD
Europäisches Patentamt | 2016
|Europäisches Patentamt | 2024
|