Application of Supercapacitor in State Grid Electricity Meter

At present, the functions of domestic electricity meters are becoming more and more intelligent. In this era of rapid development of network information, the previous method of door-to-door electricity checking and charging is being replaced step by step by the method of checking electricity consumption information on the network and paying bank fees. Therefore, long-term data storage and display functions It is indispensable. At present, most of the electric meters use various batteries to supply power to the clock chip and power-off protection. After the study of the characteristics of the super capacitor , the use of the super capacitor can completely solve this function, and it is more efficient than the use of the battery. Advantage.

Advantages of supercapacitors :

(1) It can be charged with high current, the charging and discharging time is short, the requirements for the charging circuit are simple, and there is no memory effect. The charging of supercapacitors is a physical process of charging and discharging of the electric double layer or a fast and reversible chemical process on the surface of the electrode material. High-current charging can end the charging process within tens of seconds to several minutes, which is a real fast charging. The battery needs several hours to finish charging, and it takes dozens of minutes to use fast charging;

(2) The cycle life is long, and the number of deep charge and discharge cycles can reach more than 500,000 times;

(3) High energy conversion power, small process loss, high current energy circulation power ≥ 90%;

(4) High power density, equivalent to 5 to 10 times that of batteries;

(5) The raw material composition, production, use, storage and dismantling process of the product are free of pollution, which is an ideal green and environmentally friendly power source;

(6) High safety factor, long-term use without protection;

(7) The temperature characteristics are good, and it can work normally within the temperature range of -40°C to +85°C;

(8) The detection is convenient, and the remaining power can be directly read out;

(9) It can be used in series and parallel.

(10) Small size, compact shape, easy installation, space saving, and sealable;