The application of supercapacitors in electric and hybrid vehicles is mainly reflected in the following aspects:

1、 Power supply stability and current balance of power electronic control systems;

2、 Voltage stability of onboard equipment;

3、 Maintain power quality;

4、 Battery charging protection;

5、 Regenerative braking integration;

6、 Electric energy management system. These applications demonstrate the crucial role of supercapacitors in improving power system stability, as well as optimizing the overall performance and efficiency of electric and hybrid vehicles through their fast charging and discharging capabilities. In the case of frequent power fluctuations and large load changes, supercapacitors can effectively support the normal operation of in vehicle electronic devices.