The invention discloses a method and system for reducing static power consumption of a vehicle-mounted power supply. The system comprises a high-voltage blocking MOS module, a high-voltage input module, an auxiliary power supply module, a high-voltage to low-voltage LDO module, a rising edge detection circuit, a single-pulse starting auxiliary power supply circuit, an auxiliary power supply shutdown circuit, the vehicle-mounted power supply, and a single-chip microcomputer. The input end of the high-voltage blocking MOS module is electrically connected with the output end of a high-voltage input module. According to the method and the system for reducing the static power consumption of the vehicle-mounted power supply, the vehicle-mounted power supply and the auxiliary power supply module are awakened by adopting the single-pulse starting auxiliary power supply circuit, the vehicle-mounted power supply is awakened to supply power and the auxiliary power supply module sleeps when a vehicle is started, and the vehicle-mounted power supply is controlled to be disconnected and the auxiliary power supply module supplies power when the vehicle-mounted power supply does not work, and therefore, the electric loss of the vehicle-mounted power supply and the auxiliary power supply module is greatly reduced.
本发明公开了一种用于降低车载电源静态功耗的方法及系统,包括高压阻断MOS模块、高压输入模块、辅助电源模块、高压转低压LDO模块、上升沿检测电路、单脉冲启动辅助电源电路、辅助电源关机电路、车载电源和单片机,所述高压阻断MOS模块的输入端与高压输入模块的输出端电性连接。本发明提出的用于降低车载电源静态功耗的方法及系统,通过采用单脉冲启动辅助电源电路唤醒车载电源和辅助电源模块,在汽车启动时,唤醒车载电源供电,辅助电源模块休眠,当车载电源不工作时,控制车载电源断开,辅助电源模块供电,以此大大降低了车载电源和辅助电源模块的电损耗。
Method and system for reducing static power consumption of vehicle-mounted power supply
一种用于降低车载电源静态功耗的方法及系统
2021-04-13
Patent
Elektronische Ressource
Chinesisch
IPC: | H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |
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