Supercapacitors have a wide range of applications. Combined with high energy density materials such as fuel cells, supercapacitors provide rapid energy release to meet the demand for high power, so that fuel cells can only be used as energy sources. At present, the energy density of supercapacitors can be as high as 20kW/kg, and they have begun to occupy the market between traditional capacitors and batteries. Discharge first, especially electrolytic capacitor.

It can be used in applications requiring high reliability but not high energy requirements Farad capacitor To replace traditional batteries, it can also combine super capacitors and batteries, which can be used in occasions with high energy requirements, and can choose smaller and more economical batteries. Use capacitors in series. Due to process reasons, the extra working voltage of the unipolar supercapacitor is generally about 2.8V, so it is necessary to use it in series in most cases.

The supercapacitor has a fixed polarity. Polarity shall be recognized before application. It shall be applied at nominal voltage. When the capacitor voltage exceeds the nominal voltage, it will lead to the decomposition of electrolyte. At the same time, the farad capacitor will generate heat, reduce its capacity, add internal resistance, and shorten its life. In some cases, it may lead to the collapse of the capacitor function. High frequency fast charging and discharging will lead to internal heating of the capacitor, capacity attenuation, addition of internal resistance, and in some cases will lead to functional collapse of the capacitor. Super capacitor manufacturer Do not be in a place where the relative humidity is greater than 85% or contains toxic gas. Under these circumstances, lead wires and capacitor shells will be corroded, resulting in open circuit. The external ambient temperature has an important impact on the service life. Capacitors shall be kept away from heat sources as far as possible.

Any supercapacitor will discharge through internal parallel resistance when it is powered on. This discharge current is called leakage current, which affects the self discharge of supercapacitor unit. Super capacitor module The voltage of is also required to be balanced when used in series. Because the super capacitor has leakage current, the size of the internal parallel resistance determines the voltage distribution on the series connected super capacitor unit. When the voltage of the supercapacitor is stable, the voltage of each unit will change with the leakage current, not with the capacitance. The larger the leakage current, the smaller the additional voltage. On the contrary, the smaller the leakage current, the higher the additional voltage.