Precautions When Using Super Capacitors in Series

Aug. 11, 2021

Supercapacitors, also known as electrochemical capacitors, electric double-layer capacitors, gold capacitors, and farad capacitors, are electrochemical components developed from the 1970s and 1980s that use polarized electrolytes to store energy.

The basic principle is the same as other types of electric double-layer capacitors, which use the electric double-layer structure composed of activated carbon porous electrodes and electrolyte to obtain super large capacity. The outstanding advantages are high power density, short charge and discharge time, long service cycles, and wide operating temperature range. It is one of the large-capacity electric double-layer capacitors that have been put into mass production.

Due to technical reasons, the rated working voltage of single-pole super capacitors is generally around 2.8V, so in most cases they must be used in series. It is difficult to guarantee that the capacity and leakage of each cell are the same. This will cause the charging voltage of each cell in the series circuit to be different, which may cause overvoltage damage to the capacitor. Therefore, a voltage equalizing circuit must be added to the series of supercapacitors.

Precautions When Using Super Capacitors in Series

When supercapacitors are used in series, there is a problem of voltage balance between the cells. The simple series connection will cause overvoltage to one or several cell capacitors, which will damage these capacitors and affect the overall performance. Therefore, when the capacitors are used in series , technical support from the manufacturer is required.

When using supercapacitors, we must pay attention to what mentioned above.If you don't know how to use super capacitors in series, you can consult experienced personnel for help. Dongguan Zhixu Electronic Co., Ltd. (also JYH HSU(JEC)) manufacturer has passed ISO9001:2015 quality management system certification; JEC safety capacitors (X capacitors and Y capacitors), varistors have passed national certifications of main industrial powers in the world; JEC ceramic capacitors, film capacitors and super capacitors are in compliance with environmental protection indicators. Welcome to contact us if you need free samples or help from us.

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