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A lithium-ion power battery welding system

A power battery and welding system technology, applied in welding equipment, auxiliary welding equipment, welding/cutting auxiliary equipment, etc., can solve the problems of battery influence, welding fixture heating, burn-through, etc., to avoid excessive pressure and accurate positioning Effect

Active Publication Date: 2021-08-27
INST OF IND TECH GUANGZHOU & CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the process requirements of laser welding, the matching accuracy of the cover plate and the shell is very high. If there is a large gap or deviation, it is easy to cause poor welding such as burn-through, virtual welding, welding collapse, and inclusions.
[0003] In addition, for the sealing welding of the cover plate, the welding process takes a long time, and the welding fixture is seriously heated for a long time, which may affect the battery cell, cause the diaphragm of the battery cell to shrink, and cause a safety hazard

Method used

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  • A lithium-ion power battery welding system
  • A lithium-ion power battery welding system
  • A lithium-ion power battery welding system

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Embodiment Construction

[0028] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0029] like figure 1 As shown, a lithium-ion power battery welding system includes a frame 1, a conveying line 2, a jacking mechanism 3, a welding jig 4, and a cooling device for cooling the welding jig. The frame 1 is divided into upper and lower layers, the welding fixture 4 is installed on the upper layer of the frame 1, and the conveying line 2 and the jacking mechanism 3 are installed on the lower layer of the frame 1.

[0030] like figure 2 As shown, the transmission line 2 includes a transmission line installation bracket 201 , a transmission line actuator 202 , a battery tray 203 and an intercepting mechanism 204 . The conveyor line actuator 202 is in the form of a chain, but is not limited to this form. A plurality of...

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Abstract

The invention discloses a lithium-ion power battery welding system, which includes a frame, which is arranged on the frame for conveying the battery transmission line, and also includes a jacking mechanism and a welding fixture arranged on the frame, the jacking mechanism is used for The transported battery is lifted up to the welding jig, which is used for clamping and positioning of the battery, and the welding jig is provided with a cooling device for cooling the welding jig. In the present invention, a cooling device is installed on the welding jig, which can effectively avoid the accumulation of heat during the welding process from damaging the batteries. Precise positioning of the battery.

Description

technical field [0001] The invention relates to battery welding technology, in particular to a lithium ion power battery welding system. Background technique [0002] At present, in the manufacturing process of lithium-ion power batteries, after the battery cells are put into the case, the battery cover must be welded into the case. The welding of the cover into the case requires good sealing of the battery after welding, no deformation of the case, and good quality of the weld. Now the industry usually uses laser welding to complete this process. In addition to the influence of lasers and laser technology on welding quality, welding fixtures are also the key to ensuring welding quality. Under the same volume, in order to obtain higher weight-specific energy, the thickness of the battery case is gradually reduced, which means that the rigidity of the square aluminum case is getting lower and lower, which makes it easier to deform during the production process, resulting in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K37/04B23K37/00B23K101/36
CPCB23K37/003B23K37/0443B23K2101/36
Inventor 刘泽宇邓益增黄志强黄健徐腾飞张春杰
Owner INST OF IND TECH GUANGZHOU & CHINESE ACADEMY OF SCI
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