Explosion-proof battery shell
A battery shell and explosion-proof sheet technology, which is applied to battery pack components, battery boxes/coats, large-size batteries/battery packs, etc., can solve the problems of large safety hazards and poor explosion-proof performance of battery shells, and achieve good explosion-proof performance , reduce safety hazards, enhance the effect of explosion-proof performance
Pending Publication Date: 2017-05-31
无锡市金杨新材料股份有限公司
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Problems solved by technology
[0004] The purpose of the present invention is to address the above problems and provide an explosion-proof battery case to solve the problems of poor explosion-proof performance and large safety hazards of the existing battery case
Method used
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[0018] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods. It should be understood that the embodiments described here are only used to explain the present invention, but not to limit the present invention.
[0019] Please refer to Figure 1 to Figure 4 As shown, in this embodiment, an explosion-proof battery case includes a case 1 and an explosion-proof cap 2 arranged on the top of the case 1, the inner surface and the outer surface of the case 1 are provided with a nickel-plated layer, so The explosion-proof cap 2 includes a sealing ring 21 and a top cover 22, an explosion-proof sheet 23 and an orifice plate 24 that are packaged in the sealing ring 21 from top to bottom. Gaskets 25 are arranged between 23, vent holes are opened on the orifice plate 24, dents for explosion-proof function are arranged on the explosion-proof sheet 23, and an insulating rubber...
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The invention discloses an explosion-proof battery shell. The explosion-proof battery shell comprises a shell and an explosion-proof cap which is arranged at the top end of the shell; the explosion-proof cap comprises a sealing ring, and a top cover, an explosion-proof piece and a pore plate which are encapsulated in the sealing ring in sequence from top to bottom; an air hole is formed in the top cover; a ventilating hole is formed in the pore plate; a dent which achieves an explosion-proof effect is formed in an explosion-proof piece; the centre of the explosion-proof piece is sunken and is connected with the pore plate through a plurality of laser welding spots; a circle of indented groove is formed in the bottom surface of the shell; the notch depth of the indented groove is 1 / 3 to 3 / 4 of the thickness of the shell. The explosion-proof cap of the explosion-proof battery shell has high explosion-proof performance; the circle of the indented groove is formed in the bottom surface of the shell, so that the explosion-proof performance is further improved; the explosion-proof battery shell has double guarantee, and the potential safety hazard is greatly reduced.
Description
technical field [0001] The invention relates to the field of batteries, in particular to an explosion-proof battery case. Background technique [0002] A lithium-ion battery is a rechargeable battery that primarily relies on the movement of lithium ions between the positive and negative electrodes to function. During the charging and discharging process, Li+ intercalates and deintercalates back and forth between the two electrodes: when charging the battery, Li+ is deintercalated from the positive electrode, inserted into the negative electrode through the electrolyte, and the negative electrode is in a lithium-rich state; the opposite is true when discharging. Due to the characteristics of small size, light weight, strong power, and environmental protection, lithium-ion batteries have been widely used in industrial production and daily life. [0003] The battery case is an important part of the lithium-ion battery, and the explosion-proof performance of the battery case is...
Claims
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IPC IPC(8): H01M2/02H01M2/12
CPCH01M50/10H01M50/383H01M50/394Y02E60/10
Inventor 周勤勇杨建林滕澄红
Owner 无锡市金杨新材料股份有限公司