Due to the rapid development of industry technology in the new era, the early circuit structure is gradually replaced by more complex circuit forms, and ordinary capacitors can no longer meet the needs of circuit operation. In order to meet the needs of high-load or overloaded circuit operation, the use of supercapacitors has been promoted in China, which is superior to traditional capacitors in performance. As a new type of rechargeable energy storage power source, supercapacitors play an important role in energy storage power sources. According to different energy storage mechanisms, supercapacitors can be divided into symmetric supercapacitors, asymmetric supercapacitors and hybrid supercapacitors.

The basic principle of supercapacitors is the same as that of other types of electric double-layer capacitors. The electric double-layer structure composed of activated carbon porous electrodes and electrolytes is used to obtain super-large capacity. The outstanding advantages are high power density, short charge and discharge time, long cycle life and wide operating temperature range. According to the type of electrolyte, it can be conventionally divided into aqueous electrolyte and organic electrolyte type. A supercapacitor is an electrochemical element that stores energy through polarized electrolytes. It can be used as a power source with special properties between traditional capacitors and batteries. The energy storage process is reversible and can be repeatedly charged and discharged. Hundreds of thousands of times.

Compared with ordinary capacitors, supercapacitors have been improved and adjusted in structure and optimized in principle. Because of its low single-cell voltage, it needs to be used in series in practical applications. In order to ensure the safety and efficiency of supercapacitor manufacturers, the voltage equalization technology has been continuously developing along with the use of supercapacitors. After the supercapacitor transfers the stored energy to the output end of the power supply using the inverter lead, the optimized processing can further enhance the storage performance of the capacitor.