A kind of supercapacitor with switching function and preparation method thereof

Abstract

The invention discloses a supercapacitor with switching function and a preparation method thereof. The supercapacitor of the present invention has a stacked structure, from bottom to top, the first metal sheet, the first mixed electrode slurry layer, the first gel electrolyte layer, the second mixed electrode slurry layer, the second metal sheet, and the insulating elastic ring , the third metal sheet, the third mixed electrode slurry layer, the second gel electrolyte layer, the fourth mixed electrode slurry layer and the fourth metal sheet, the preparation method of which comprises the following steps: 1) preparing the gel electrolyte and the mixed electrode slurry; 2) preparing a supercapacitor electrode with a laminated structure; 3) laminating and bonding the supercapacitor electrode, the insulating elastic ring and the supercapacitor electrode. The supercapacitor of the present invention has a simple structure, can realize boosting in series by stacking a plurality of supercapacitors, does not need connecting wires, has high energy efficiency, can realize switching function by extrusion, and has strong adaptability.

Description

technical field [0001] The invention relates to a supercapacitor with switching function and a preparation method thereof. Background technique [0002] Supercapacitors have the advantages of high power density, long cycle life, good temperature adaptability, and high safety, and are suitable for instantaneous high-power charging and discharging. At present, the application fields of supercapacitors are mainly concentrated in wireless communications, mobile computers, smart watches, automotive electronics, consumer electronics, rail transit, backup power, wind / solar power generation and other fields. Supercapacitor products have always had the defect of low single-use voltage. At present, the following two methods are mainly used to overcome this defect: circuit boosting and series boosting. Boosting the circuit will cause huge energy loss, and the energy utilization rate of the series boost is much higher, so the series boost is more feasible. However, there are two promi...

AI Technical Summary

Problems solved by technology

However, there are two prominent problems in the process of connecting supercapacitors in series to boost voltage: 1) a large number of connecting wires need to be used, and these connecting wires will generate heat and reduce energy utilization efficiency; 2) if the instantaneous current is too large, it will damage the supercapacitor Capacitors cause damage to varying degrees. If the supercapacitor itself can instantly disconnect the charging process when the current is overloaded, it can effectively protect the supercapacitor.

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