The invention provides a power supply switching circuit. The power supply switching circuit comprises a master power switch circuit, a slave power switch circuit, a slave closing switch circuit, a slave time delay circuit and a master-slave switching cancelling circuit, the main power supply is respectively connected with a first connecting end of the main power supply switching circuit, a first connecting end of the main-slave switching cancelling circuit and a first connecting end of the slave closing switching circuit; a second connecting end of the main power supply switching circuit is connected with a second connecting end of the main-slave switching cancelling circuit and serves as a main power supply output end; the slave power supply is respectively connected with a first connecting end of the slave power supply switching circuit and a first connecting end of the slave time delay circuit; the second connecting end of the slave delay circuit is connected with the second connecting end of the slave power switch circuit and the second connecting end of the slave closing switch circuit; the third connecting end of the slave power switch circuit is connected with the main power output end. The design with functional safety requirements can be met, and the purposes of improving the functional safety level and reducing safety accidents of the whole vehicle are achieved.
本发明提供了一种电源供电切换电路,包括:主电源开关电路、从电源开关电路、从关闭开关电路、从延时电路以及主从切换取消电路;主电源分别连接主电源开关电路的第一连接端、主从切换取消电路的第一连接端以及从关闭开关电路的第一连接端;主电源开关电路的第二连接端连接主从切换取消电路的第二连接端,并作为主电源输出端;从电源分别连接从电源开关电路的第一连接端和从延时电路的第一连接端;从延时电路的第二连接端连接从电源开关电路的第二连接端和从关闭开关电路的第二连接端;从电源开关电路的第三连接端连接主电源输出端。本发明能够满足有功能安全需求的设计,具有提高功能安全等级、降低整车安全事故的目的。
Power supply switching circuit
电源供电切换电路
2023-12-22
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 / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen |
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