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Battery module welding process

A welding process and battery module technology, applied in battery pack components, secondary batteries, circuits, etc., can solve problems such as affecting the yield of battery modules, no pre-fixing of tabs, and high welding defect rate, and improve the The effect of production efficiency and welding production quality, reducing product scrap, and reducing welding defects

Pending Publication Date: 2022-04-08
杭州捷能科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The lithium-ion battery module includes multiple batteries arranged in series and parallel. In the battery module, the tabs of the batteries are connected in parallel through the bus bar. The existing battery module welding process does not have the tabs pre-fixed, so that after some tabs are bent Welding when it is in an uneven state will lead to a high rate of welding defects in production, which will affect the yield of battery module production

Method used

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  • Battery module welding process

Examples

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Embodiment Construction

[0022] Such as figure 1 As shown, a battery module welding process specifically includes the following steps:

[0023] S1: Fix some batteries into groups;

[0024] S2: Assembling the insulating plate with the batteries fixed into groups;

[0025] S3: Position and assemble the busbar and the insulating plate through the positioning structure, and control the distance between the busbars;

[0026] S4: Bending the tab through the pressing piece;

[0027] S5: performing pre-spot welding positioning on the bent tab;

[0028] S6: Positioning and checking the pre-spot-welded lug circumference;

[0029] S7: welding the positioned tabs;

[0030] S8: Check the welded lugs.

[0031] Before several batteries are fixed into a group, it is necessary to check the tab surface of the battery. If there is no damage on the tab surface, it can be fixed into a group. If there is any damage, just replace the intact battery.

[0032] Specifically, in the above-mentioned S1, spacers are provid...

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Abstract

The invention discloses a battery module welding process. The battery module welding process specifically comprises the following steps: fixing a plurality of batteries into groups; assembling an insulating plate and the batteries fixed in groups; the busbars and the insulating plate are positioned and assembled through the positioning structure, and the distance between the busbars is well controlled; the electrode lug is bent through the pressing piece; carrying out pre-spot welding positioning on the bent tab; positioning and checking the periphery of the tab subjected to pre-spot welding; welding the positioned tabs; and checking the welded tabs.

Description

technical field [0001] The invention belongs to the technical field of welding technology, and in particular relates to a battery module welding technology. Background technique [0002] The lithium-ion battery module includes multiple batteries arranged in series and parallel. In the battery module, the tabs of the batteries are connected in parallel through the bus bar. The existing battery module welding process does not have the tabs pre-fixed, so that after some tabs are bent Welding when it is in an uneven state will lead to a high rate of welding defects in production, which will affect the yield of battery module production. Contents of the invention [0003] In order to overcome the deficiencies of the prior art, the present invention provides a battery module welding process. [0004] In order to achieve the above purpose, the present invention adopts the following technical solutions: a battery module welding process, specifically including the following steps:...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M50/516H01M50/505H01M10/0525
CPCY02E60/10
Inventor 童仁旺王松义刘文帅
Owner 杭州捷能科技有限公司
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