The invention relates to a vehicle controller power supply automatic switching circuit system, which belongs to the technical field of vehicle power supply, and comprises a constant power supply circuit, a key power-on power supply circuit, a pre-drive circuit, an isolation circuit, a switching circuit and a power supply output circuit, and realizes switching between constant power supply and key power-on power supply through the switching circuit. Under the condition that constant power supply fails, key power-on power supply is started to supply power for control so that self-diagnosis can be completed, but under the condition that constant power supply is normal, key power-on power supply is only used as a signal source instead of a power source, and the service life of the power supply is prolonged.
本发明涉及一种车用控制器电源自动切换电路系统,属于车辆供电技术领域,包括常电供电电路、钥匙上电供电电路、预驱电路、隔离电路、切换电路和供电输出电路,通过切换电路实现常电供电和钥匙上电供电之间的切换,即实现在常电供电失效的情况下,启动钥匙上电供电为控制进行供电使其完成自诊断,但在常电供电正常情况下,钥匙上电供电仅仅是作为信号源而非电源,提高供电电源的使用寿命。
Power supply automatic switching circuit system of vehicle controller
一种车用控制器电源自动切换电路系统
2023-03-07
Patent
Electronic Resource
Chinese
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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