Battery positive plate and manufacturing method thereof
A battery positive electrode and manufacturing method technology, applied in the battery positive plate and its manufacturing field, can solve the problems of increased battery production defect rate, affecting battery safety performance, reducing production efficiency, etc., to reduce defect rate, prevent battery internal short circuit, improve The effect of production efficiency
Inactive Publication Date: 2011-04-06
SHENZHEN HIGHPOWER TECH CO LTD
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Problems solved by technology
[0003] However, during the winding process, some small cracks are likely to occur on the edge and both sides of the positive electrode sheet, causing the positive electrode material to peel off the substrate, especially the side of the positive electrode sheet close to the bottom of the steel shell, which is prone to produce positive electrode material powder
The powder of the positive electrode material falls to the bottom of the steel shell and will communicate with the negative electrode (battery steel shell), which will cause an internal short circuit of the battery, greatly increase the production defect rate of the battery, reduce the production efficiency, and seriously affect the safety performance of the battery
Method used
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[0020] The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0021] figure 1 It is a schematic diagram of the structure of the positive plate of the battery in one embodiment. The positive electrode sheet of the battery includes a positive electrode sheet main body 110, and a glue that is arranged on one side of the positive electrode sheet main body 110 (the side close to the bottom of the steel case of the battery when the positive electrode sheet is assembled in the battery) and the side of the positive electrode sheet main body 110. Protective film 120.
[0022] In this embodiment, the glue solution protection film 120 is formed by soaking the glue solution in the positive plate main body 110 and drying the glue solution. The glue is CMC (sodium carboxymethyl cellulose), HMPC (hydroxypropyl methyl cellulose), PVA (polyvinyl alcohol), PTFE (polytetrafluoroethylene), SBR (styrene-buta...
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Abstract
The invention relates to a battery positive plate and a manufacturing method thereof. The battery positive plate comprises a positive plate main body and glue liquor protection films arranged at least one side of the positive plate main body. In the invention, at least one side of the battery positive plate is provided with a glue liquor protection film which is tightly attached to the positive plate main body, thus leading positive materials on the positive plate to be tightly combined and prevented from dropping easily, greatly reducing dropping of positive materal powder in the winding process, preventing the interior of the battery from short circuit caused by conduction of the positive material powder and a negative plate, reducing the reject ratio in battery production, improving the production efficiency and effectively ensuring the battery safety performance.
Description
【Technical field】 [0001] The invention relates to a battery device, in particular to a battery positive plate and a manufacturing method thereof. 【Background technique】 [0002] At present, in the production process of nickel-metal hydride batteries, it is necessary to wind the positive electrode sheet. [0003] However, some small cracks are likely to occur on the edge and both sides of the positive electrode sheet during the winding process, causing the positive electrode material to peel off the substrate, especially on the side of the positive electrode sheet close to the bottom of the steel shell, which is prone to produce positive electrode material powder. The powder of the positive electrode material falls to the bottom of the steel shell and will communicate with the negative electrode (battery steel shell), which will cause an internal short circuit of the battery, greatly increase the production defect rate of the battery, reduce the production efficiency, and ser...
Claims
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Login to View More IPC IPC(8): H01M4/24H01M4/26
CPCY02E60/124Y02E60/10
Inventor 李文良孔令坤廖兴群吴珊珊
Owner SHENZHEN HIGHPOWER TECH CO LTD