Precautions for the use of the hottest supercapaci

Precautions for the use of supercapacitors

1. Supercapacitors have fixed polarity. The polarity should be confirmed before use

2. Super capacitors should be used under nominal voltage:

when the capacitor voltage exceeds the nominal voltage, the electrolyte will decompose, and the capacitor will heat up, the capacity will decrease, the internal resistance will increase, and the service life will be shortened. In some cases, the performance of the capacitor may collapse

3. Supercapacitors cannot be used in high-frequency charging and discharging circuits. High-frequency rapid charging and discharging will cause internal heating, capacity attenuation, internal resistance increase, and in some cases, the performance of capacitors will collapse

4. Service life of super capacitor:

the external ambient temperature has an important impact on the service life of super capacitor. Capacitors should be kept away from heat sources as far as possible

5. Voltage drop when super capacitor is used as backup power supply:

because super capacitor has the characteristics of large internal resistance, there is a voltage drop at the moment of discharge 250 (245 ⑵ 50 ⑵ 40 ⑵ 30) ℃, Δ V=IR。

6. Ambient gas in use:

supercapacitors should not be located in places with relative humidity greater than 85% or containing toxic gases. These environments will lead to corrosion of leads and capacitor shells, resulting in open circuit

7. Storage of Supercapacitors:

supercapacitors should not be placed in high temperature and high humidity environment, but should be stored in an environment with a temperature of -30+50 ℃ and a relative humidity of less than 60%, so as to avoid sudden rise and fall of temperature, because this will cause product damage

8. Use of super capacitor on double-sided circuit board:

when super capacitor is used on double-sided circuit board, it should be noted that the diecasting at the connection is mainly used for the places where the starter, wheel and other parts can be reached by the capacitor. Due to the installation method of super capacitor, the shaft sleeve should be sleeved with short circuit

9. When welding the capacitor to the circuit board, do not touch the capacitor shell to the circuit board, otherwise the weldment will penetrate into the capacitor threading hole, which will affect the performance of the capacitor

10. After installing the super capacitor, do not tilt or twist the capacitor forcibly, which will cause the capacitor lead to loosen and lead to performance degradation

11. Avoid overheating the capacitor during welding:

if the capacitor overheats during welding, the service life of the capacitor will be reduced. For example, if a printed circuit board with a thickness of 1.6mm is used, the welding process should be 260 ℃, and the time should not exceed 5S

12. Cleaning after welding:

after the capacitor is welded, the circuit board and capacitor need to be cleaned, because some impurities may cause short circuit of the capacitor

13. When capacitors are used in series:

when supercapacitors are used in series, there is a problem of voltage balance between monomers. Simple series connection will lead to overvoltage of one or more monomeric capacitors, which will damage these capacitors, and the overall lightweight and rugged performance will be affected. Therefore, when capacitors are used in series, the manufacturer's technical support is required

14. Others:

for other application problems in the process of using supercapacitors, please consult the manufacturer or refer to the relevant technical data in the instructions for the use of supercapacitors. (end)