Welding method of battery module

A welding method and battery module technology, applied in welding equipment, laser welding equipment, welding/welding/cutting items, etc., can solve the problems of increased internal resistance, thermal failure, loosening of battery packs, etc. The effect of taking into account the welding quality and improving the welding efficiency

Inactive Publication Date: 2019-02-15
CH AUTO TECH CORP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The joints connected by riveting and bolting are not reliable enough, and may loosen due to vibration, which will increase the internal resistance of the battery pack and cause safety problems such as thermal failure
[0003] That is to say, battery modules use more welding methods to electrically connect multiple battery modules into battery packs. However, during the welding process of battery modules, dozens or even hundreds of welds need to be welded, which affects the welding quality. The stability and consistency requirements are extremely high, and once any of the welds is poorly welded, it may cause the entire battery module to be defective or even scrapped

Method used

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  • Welding method of battery module
  • Welding method of battery module
  • Welding method of battery module

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Embodiment Construction

[0027] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0028] Refer below Figure 1-Figure 5 A welding method of a battery module according to an embodiment of the present invention will be described.

[0029] Such as figure 1 and figure 2 As shown, the welding method of the battery module according to the embodiment of the present invention includes at least the following steps: connecting the first bus bar 10 connected to the first pole of the battery and the second bus bar 20 connected to the second pole of the battery Divided into a plurality of areas; weld the first bus bar 10 in ea...

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Abstract

The invention discloses a welding method of a battery module. The welding method comprises the following steps of: dividing first busbars connecting to first terminal posts of batteries and second busbars connected to second terminal posts of the batteries into a plurality of regions; and sequentially welding the first busbars in each region on the corresponding first terminal posts and welding the second busbars in each region on the corresponding second terminal posts until the first busbars in all the regions are welded on the corresponding first terminal posts and the second busbars in allthe regions are welded on the corresponding second terminal posts. Therefore, the welding efficiency is improved, the welding procedure is simplified, and the welding consistency and stability of theregion where the first busbars and the second busbars face each other are relatively high.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a welding method for battery modules. Background technique [0002] In related technologies, in a battery pack, multiple battery modules are connected in series through bus bars to output higher voltage. The connection between the bus bar and the battery core can be done by riveting, bolting, welding, etc. The joints connected by riveting and bolting are not reliable enough, and may loosen due to vibration, which will increase the internal resistance of the battery pack and cause safety problems such as thermal failure. [0003] That is to say, battery modules use more welding methods to electrically connect multiple battery modules into battery packs. However, during the welding process of battery modules, dozens or even hundreds of welds need to be welded, which affects the welding quality. The stability and consistency requirements are extremely high, and once there are to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/21B23K26/60B23K26/70B23K101/36
CPCB23K26/21B23K26/60B23K26/702
Inventor 王克坚曹瑜琦
Owner CH AUTO TECH CORP CO LTD
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