Button type lithium battery negative electrode metal cap structural parts
A lithium battery and metal cover technology, which is applied to structural parts, battery pack parts, battery cover/end cover, etc., can solve the problems of poor quality of button-type lithium manganese batteries and difficulty in supplying industry demand, and achieve enhanced strength and improved Quality, the effect of improving package performance
Active Publication Date: 2021-10-08
缪汉平
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Problems solved by technology
[0006] However, the existing button-type lithium-manganese battery accessories are difficult to meet the above requirements at the same time, resulting in poor quality button-type lithium-manganese batteries, and it is difficult to supply the needs of the industry
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[0023] 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. 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.
[0024] like figure 1 and figure 2 , the embodiment of the present invention provides a structural part of a button-type lithium battery negative electrode metal cap 1, comprising the following steps:
[0025] Step 1: Punch and cut the circular material to form a circular plate. When forming a circular plate, its flatness is required without burrs.
[0026] Step 2: Carry out deep drawing and stamping on the above-mentioned circular plate, so that the outer ...
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The invention relates to a button-type lithium battery negative electrode metal cap structure, which comprises the following steps: stamping and cutting the circular material to form a circular plate; performing deep drawing and pressing on the circular plate to form the outer edge of the circular plate L-shaped bending part, the L-shaped bending part includes a vertical part and a horizontal part; perform deep drawing and pressing on the horizontal part of the above-mentioned L-shaped bending part to form a bending part; perform the first stamping Folding, so that the bent part overlaps with the unbent part of the horizontal part to jointly form the first layer of folded part; carry out the second stamping and folding, so that the first layer of folded part overlaps with the vertical part , together forming a three-layer folded part, the three-layer folded part is arranged vertically, and the preparation of the negative electrode metal cap of the button-type lithium battery can be completed. The structural parts provided by the present invention can effectively enhance the strength of the metal cap of the negative electrode of the button-type lithium battery through the above steps, improve its packaging performance, and then improve the quality of the finished button-type lithium battery.
Description
technical field [0001] The invention relates to a button-type lithium battery negative electrode metal cap structural part, belonging to the field of lithium battery preparation. Background technique [0002] When the button-type lithium-manganese battery is packaged and stamped, the requirements for its accessories are: [0003] (1) The metal negative electrode cap should have high hardness, be flat and free of burrs, and the cap should be folded sideways, otherwise the sealing rubber ring will be cut off when stamping and packaging the battery, causing battery fluid and short circuit; [0004] (2) The sealing rubber ring needs to be moderately soft, otherwise it will cause the electrolyte to flow out of the battery; [0005] (3) The metal positive electrode steel shell should be perfectly round as a whole, and there should be no oval shape, otherwise the battery may leak liquid when stamping and packaging. When all accessories meet the above requirements, the quality of t...
Claims
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IPC IPC(8): H01M50/147H01M50/148H01M50/166
CPCH01M50/166H01M50/148Y02E60/10
Inventor 缪汉平
Owner 缪汉平