Cover plate used for power battery
A power battery and cover plate technology, which is applied in the field of power battery cover plates, can solve the problems of reducing battery performance, safety accidents, corrosion of explosion-proof valves, etc., and achieve the effects of eliminating potential safety hazards, improving performance, and avoiding damage
Pending Publication Date: 2019-03-08
江西安驰新能源科技有限公司
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Problems solved by technology
[0004] The purpose of the present invention is to provide a cover plate for a power battery to solve the problem in the above-mentioned background art that the explosion-proof valve is easily corroded by the electrolyte, causing leakage to reduce the performance of the battery, and even causing safety accidents
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[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The specific embodiments described here are only used to explain the present invention, not to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0020] The present invention provides such Figure 1-6 The shown cover plate for a power battery includes a cover plate 1, a positive electrode assembly 4 and a negative electrode assembly 5. Two groups of thickened parts 7 are symmetrically provided on the cover plate 1, and the positive electrode assembly 4 and the negative electrode as...
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Abstract
The invention discloses a cover plate used for a power battery. The cover plate used for the power battery comprises a cover plate, a cathode assembly and an anode assembly, wherein the cover plate issymmetrically provided with two groups of thickened parts, the cathode assembly and the anode assembly are respectively arranged on corresponding thickened parts, a waist-shaped hole is formed in thecenter of the cover plate, an anti-explosion valve is welded at the inner side of the waist-shaped hole, the cross section of the waist-shaped hole is in a stepped shape, the waist-shaped hole comprises an upper waist-shaped hole and a lower waist-shaped hole, the lower surface of the cover plate is bonded with anti-corrosion gummed paper corresponding to the anti-explosion valve, the shape of the anti-explosion valve corresponds to the shape of the lower waist-shaped hole, a circle of nicks are formed on the anti-explosion valve, the shape and the size of the nicks are consistent with thoseof the upper waist-shaped hole, and a support is mounted on the lower surface of the cover plate. The cover plate used for the power battery can prevent the anti-explosion valve from being corroded byelectrolyte inside the power battery by bonding the anti-corrosion gummed paper on the lower surface of the cover plate, the anti-explosion valve is avoided from being damaged, performance of the power battery is improved, and potential safety hazard is eliminated.
Description
technical field [0001] The invention belongs to the technical field of power batteries, and in particular relates to a cover plate for a power battery. Background technique [0002] Due to the advantages of high energy density, small size, long service life, and small self-discharge, lithium-ion batteries have been widely used in many mobile devices in the fields of national defense, industry, and civilian use. The cover plate is an important part of the lithium-ion battery, and the cover plate carries important functions such as electrical conduction and sealing. [0003] An explosion-proof valve is generally installed on the battery cover, and there is a circle of notches on the explosion-proof valve. The notch divides the explosion-proof valve into three areas with different thicknesses: the area outside the notch, the area at the notch and the area inside the notch. The thickness of the region outside the notch > the thickness of the region inside the notch > the ...
Claims
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IPC IPC(8): H01M2/04H01M2/12H01M10/0525H01M50/147H01M50/155H01M50/342
CPCH01M10/0525H01M50/147H01M50/155H01M50/3425Y02E60/10
Inventor 宋庆彬查秀芳白科
Owner 江西安驰新能源科技有限公司