CIRCUIT FOR POWER SUPPLY SWITCHING BETWEEN VEHICLE BATTERY AND SUPERCAPACITOR, BASED ON ON-BOARD POWER SOURCE

摘要

A circuit for power supply switching between a vehicle battery and a supercapacitor, based on an on-board power source. After a power failure occurs on a vehicle, a system power supply can immediately switch to a supercapacitor (3) for power supply, no extra components and circuits need to be added for the switching between the vehicle battery and the supercapacitor, and uncertainty brought by logic control does not exist; accordingly, the circuit for power supply switching between a vehicle battery and a supercapacitor, based on an on-board power source has a simple structure, and the circuit stably operates.