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Battery top cover processing method

A processing method and technology of the top cover, applied in the direction of battery cover/end cover, battery pack components, battery box/jacket, etc., can solve the problems of battery quality impact, harm, etc., to ensure safe use, reduce production costs, reduce effect of possibility

Inactive Publication Date: 2019-11-22
宁德聚力科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the positive and negative electrode components are essential parts for the normal operation of the battery. If the positive and negative electrodes are poorly connected during the processing of the battery top cover, it will have a huge impact on the quality of the battery.
In addition, the explosion-proof valve is used as a safety protection device during the use of the battery. If unqualified products are found during the welding process, it may cause great harm.

Method used

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  • Battery top cover processing method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A method for processing a battery top cover, comprising the following steps;

[0037] Step 1: Install the explosion-proof valve in the explosion-proof valve interface on the cover plate, and use point laser to detect the height difference between the upper surface of the explosion-proof valve and the upper surface of the cover plate. If the height difference is within the preset range, it is a qualified product;

[0038] Step 2: Perform laser welding on the explosion-proof valve cover plate of the qualified product obtained in step 1 to obtain the top cover of the semi-finished battery, conduct semi-finished helium inspection on the top cover of the semi-finished battery, place the top cover of the semi-finished battery in the gas inspection fixture, and install the fixture The cylinder presses the top cover of the semi-finished battery, sprays compressed air into the cavity below the top cover of the semi-finished battery and maintains the pressure, and detects the leak...

Embodiment 2

[0044] A method for processing a battery top cover, wherein the battery top cover includes a top cover sheet, a lower plastic, a positive electrode assembly, a negative electrode assembly, a sealing ring, an explosion-proof valve, and an explosion-proof valve protection patch;

[0045] The method for processing the battery top cover includes the following steps:

[0046] Step 1: Top cover sheet loading, grab the cover plate to the fine positioning position for fine positioning, transfer the product from the fine positioning position to the double-speed chain carrier for loading; laser coding, clean the top cover sheet coding area after coding is completed ;The manipulator takes out the top cover sheet, and uses point laser to detect the height difference between the explosion-proof valve and the cover plate. Unqualified products are not welded at the welding station, and the height difference is within the preset range as qualified products;

[0047]Step 2: Perform laser weldi...

Embodiment 3

[0054] refer to figure 1 , a method for processing a battery top cover, the battery top cover comprising, a top cover sheet, a lower plastic, a positive electrode assembly, a negative electrode assembly, a sealing ring, an explosion-proof valve, and an explosion-proof valve protection patch;

[0055] The method for processing the battery top cover includes the following steps:

[0056] 1. Top cover sheet loading: Servo mechanism, CCTL mechanism and module are used to transfer and load materials, and the full tray is manually loaded on the TRAY tray for loading (6 top cover sheets are loaded at a time), and the module grabs the cover plate Go to the fine positioning position for fine positioning, the module transfers the product from the fine positioning position to the double-speed chain carrier for loading, and manually empty the tray.

[0057] 2. Laser coding: Double laser coding is automatically coded online simultaneously (the coding machine is fixed, and each laser head ...

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Abstract

The invention relates to the field of battery accessory production, in particular to a battery top cover processing method. The method comprises the following steps 1) an anti-explosion valve is installed in an anti-explosion valve connector in a cover plate piece, the height difference between the upper surface of the anti-explosion valve and the upper surface of the cover plate piece is detected, and the anti-explosion valve is a qualified product if the height difference is within a preset range; 2) laser welding is performed on the qualified product obtained in the step 1 to obtain a semi-finished battery top cover, and semi-finished helium detection is performed on the semi-finished battery top cover to obtain a qualified semi-finished battery top cover. Three detection processes areset, so that the possibility that unqualified products are circulated and used is greatly reduced, and the use safety of the battery top cover is ensured; whether a product is qualified or not is detected by detecting the height difference before the explosion-proof valve is welded, so that unqualified products can be prevented from being put into use, and the production cost can be reduced.

Description

technical field [0001] The invention relates to the field of battery accessory production, in particular to a method for processing a battery top cover. Background technique [0002] At present, the application of electronic products is more and more extensive, especially mobile phones, laptop computers, new energy vehicles and other products, all need batteries for their functions; [0003] The battery top cover is one of the important accessories of the battery. The product structure includes top cover sheet, explosion-proof valve, explosion-proof valve protection patch, positive electrode assembly, negative electrode assembly, sealing ring and lower plastic. Among them, the positive and negative electrode components are indispensable parts for the normal operation of the battery. If the positive and negative electrodes are poorly connected during the processing of the battery top cover, it will have a huge impact on the quality of the battery. In addition, the explosion-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/04H01M2/12G01R27/02G01R31/02
CPCG01R27/02H01M50/147H01M50/15H01M50/30Y02E60/10
Inventor 李一帆欧钊
Owner 宁德聚力科技有限公司
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