Capacitor pole piece with protection layer

Abstract

The invention relates to the technical field of the design of capacitor pole piece structures, and especially a capacitor pole piece with the protection layer. The capacitor pole piece comprises a metal current collector, and the external surface of the metal current collector is wrapped by an active substance layer which is wrapped by a nylon cloth layer. The surface of the nylon cloth layer is wrapped by a scraping-resistant macromolecular coating layer which is wrapped by an insulating rubber layer. Compared with the prior art, the capacitor pole piece is simpler in structure, and the active substance layer of the metal current collector of the capacitor pole piece is sequentially wrapped by the nylon cloth layer, the scraping-resistant macromolecular coating layer and the insulating rubber layer, which can achieve the effective protection of the pole piece, avoids the internal short circuit phenomenon, caused by the collision and torsion, of a capacitor, and prolong the service life of the capacitor. The capacitor pole piece is convenient and practical, and is suitable for popularization and application.

Description

technical field [0001] The invention relates to the technical field of capacitor pole piece structure design, in particular to a capacitor pole piece with a protective layer. Background technique [0002] With the continuous advancement of science and technology, the development of consumer electronics products is gradually developing in the direction of thinning and thinning, and the development of electronic products is inseparable from the development of capacitor products. Therefore, capacitors are also gradually developing in the direction of thinning and thinning. Supercapacitor is a new type of energy storage device, which has the special function of fast charging / discharging, its power density is higher than that of ordinary batteries, and its energy density is higher than that of traditional electrolytic capacitors. In summary, supercapacitors have the advantages of small size, high energy density, fast charge and discharge speed, long cycle life, high discharge pow...

AI Technical Summary

Problems solved by technology

The winding core of the capacitor includes a positive pole piece, a negative pole piece, and a diaphragm between the positive and negative pole pieces. Since the diaphragm is only a few tens of microns thick, when dust is adsorbed on the pole piece of the capacitor or active material particles are dropped, It is easy to puncture the diaphragm, so that the positive and negative electrodes are in direct contact, causing an internal short circuit of the capacitor

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