Super capacitor core and super capacitor comprising same

Abstract

The invention discloses a super capacitor core and a super capacitor comprising the core. The super capacitor core comprises a positive pole piece and a negative pole piece, wherein diaphragms are arranged between the positive pole piece and the negative pole piece, at least two layers of diaphragms are arranged at the tail ends of the positive pole piece and the negative pole piece, and reeling needles are mounted at the tail ends of the positive pole piece and the negative pole piece; 2-8 layers of diaphragms are adopted; and the super capacitor comprises a housing, electrolyte and the core, wherein the core comprises the positive pole piece, the negative pole piece and at last two layers of diaphragms. With the adoption of the super capacitor core with the structural design, the diaphragms at the winding start end cannot be easily pierced in the winding and product use process by increasing the number of layers of the diaphragms at the tail ends of the pole pieces, the short circuit rate of the super capacitor using the core is reduced, the stability in the use process is improved, and the technology is simple, the operation is easy, and the super capacitor core and the super capacitor comprising the core are convenient to popularize.

Description

technical field [0001] The invention relates to the technical field of supercapacitors, in particular to a supercapacitor winding core and a supercapacitor containing the winding core. Background technique [0002] Although a supercapacitor is a new type of energy storage device, it has been applied in many fields due to its superior performance such as large capacity, high power density, long cycle life, low cost, and environmental friendliness. Its prospects can be considered as is very broad. In the January 2007 issue of the American "Exploration" magazine, supercapacitors were listed as one of the world's seven major scientific and technological discoveries in 2006, and supercapacitors were considered to be a revolutionary development in the field of energy storage. At present, supercapacitors have very broad application prospects in energy, automobile, medical and health, electronics, military and other fields. . [0003] The cross-sectional view of the traditional s...

AI Technical Summary

Problems solved by technology

The supercapacitor winding core with this structure has the disadvantage that during the winding process or when the supercapacitor is deformed by external force, the diaphragm at the end of the positive pole or negative pole is easily punctured, causing a short circuit in the supercapacitor. When the capacitor is fully charged, the internal temperature of the supercapacitor rises sharply, causing the electrolyte to decompose and generate a large amount of gas, and the explosion-proof valve of the supercapacitor will explode, which seriously affects the pass rate and safety of the supercapacitor.

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