Processing method of lithium ion battery pole

A technology of lithium-ion batteries and processing methods, which is applied in the direction of battery components, battery boxes/coatings, small-sized batteries/batteries, etc., can solve problems such as high cost, low production efficiency, and easy desoldering, and achieve production High efficiency, simplified production process, and not easy to desolder

Inactive Publication Date: 2019-08-13
广东九九华立新材料股份有限公司
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  • Claims
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Problems solved by technology

[0003] In order to solve the above technical problems, the present invention provides a method for processing lithium ion battery poles, which solves the technical problems of low production efficiency, high cost, and easy desoldering of existing processing methods.

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  • Processing method of lithium ion battery pole

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Embodiment Construction

[0020] In order to allow those skilled in the art to better understand the technical solution of the present invention, the present invention will be further elaborated below.

[0021] as attached figure 1 A copper-aluminum composite pole is shown, a copper column 1 and an aluminum plate 2 .

[0022] A method for processing a lithium ion battery pole, specifically comprising the following steps:

[0023] Step 1, prepare the base material: copper column and aluminum plate, process one end of the copper column into a stepped protrusion according to the required size, and process the center position of the aluminum plate shaft into a groove matching the stepped protrusion of the copper column;

[0024] Step 2, electroplating the surface of the stepped convex portion of the copper pillar, the copper pillar electroplating adopts nickel plating, and the thickness of the plating layer is 7.5 um~10 um;

[0025] Step 3, coating a layer of metal brazing material on the protrusion of t...

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Abstract

The invention discloses a processing method of a lithium ion battery pole, which specifically comprises the following steps: step 1, preparing a base material, processing one end of a copper column into a step-shaped convex part, and processing an aluminum plate into a groove matched with the step-shaped convex part of the copper column; step 2, carrying out electroplating on the surface of the convex part of the copper column; step 3, coating the convex part of the copper column and the groove of the aluminum plate with metal brazing materials, and assembling the copper column and the aluminum plate; step 4, brazing the assembled copper column and the aluminum plate; step 5, removing an oxide layer and smudginess on the surface of a copper-aluminum composite pole; and step 6, carrying outoil removing and cleaning. Compared with a copper-aluminum friction welding process, the machining material utilization rate is high, the batch production efficiency is high, and the overall cost isreduced by about 30%. The copper-aluminum composite pole produced through the processing method is not prone to desoldering, the overall stability of the product is improved, and the overall weight islow. By use of the processing method, batch production can be achieved, equipment investment is low, production efficiency is high, and the production cost can be reduced.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a method for processing a pole of a lithium ion battery. Background technique [0002] Copper-aluminum composite poles are one of the necessary parts for square cover plates. Because copper has a high density and is expensive, copper is much heavier per unit volume than aluminum, and the price is also much higher, so the cover plate design needs to be It is necessary to reduce the use of copper as much as possible. Except for the necessary connection of the negative electrode cell, the rest of the position is replaced by aluminum. Therefore, the existing technology uses rotary friction welding to compound aluminum on copper to make composite parts. The process has high requirements on equipment, the production efficiency of a single machine is low per unit time, the scrap rate of materials is high, and it is easy to waste materials, which leads to high overall cost of battery c...

Claims

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Application Information

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IPC IPC(8): H01M2/30
CPCH01M50/543Y02E60/10
Inventor 刘义慈晟慈艳谢建辉
Owner 广东九九华立新材料股份有限公司
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