Battery shell runner partition welding process based on harmonica-shaped sectional material

A battery shell and welding process technology, applied in welding equipment, non-electric welding equipment, manufacturing tools, etc., can solve the problems of thermal deformation at the repair welding position, scrapping of the whole board, leakage at the repair welding position, etc. The effect of increasing the pass rate

Pending Publication Date: 2021-10-22
重庆新铝时代科技股份有限公司
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AI Technical Summary

Problems solved by technology

[0004] However, after the above-mentioned process uses friction welding to weld the partition, it needs to use argon arc welding to repair the process hole of friction welding, but argon arc welding will cause the repair welding position to be heated and

Method used

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  • Battery shell runner partition welding process based on harmonica-shaped sectional material
  • Battery shell runner partition welding process based on harmonica-shaped sectional material
  • Battery shell runner partition welding process based on harmonica-shaped sectional material

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Embodiment Construction

[0028] The specific implementation manner and working principle of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0029] Such as figure 1 As shown, a battery case flow channel partition welding process based on harmonica-shaped profiles includes the following steps:

[0030] Step 1. Fix the harmonica-shaped profile 10 to be welded on the workbench, remove the ribs of the profile according to the design machine, and ensure that there is no residue in the machined ribs;

[0031] Step 2. Place the partition structure 20 at the position to be welded according to the design and perform accurate positioning to ensure that the partition structure 20 is closely matched with the upper and lower sides of the flow channel, such as Figure 2-Figure 5 shown;

[0032] Step 3. Use a friction stir welding head with a penetration depth of not less than 2 mm to weld the partition structure 20. During welding, the friction stir ...

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Abstract

The invention discloses a battery shell runner partition welding process based on a harmonica-shaped sectional material. The battery shell runner partition welding process based on the harmonica-shaped sectional material comprises the following steps of fixing the harmonica-shaped sectional material to be welded on a workbench, machining rib positions of the sectional material according to the design, and ensuring that the machined rib positions have no residues; placing a partition structure at a position to be welded according to the design, accurately positioning, and ensuring that the partition structure is tightly matched with the upper side and the lower side of a runner; adopting a friction stir welding head with the fusion depth not smaller than 2 mm for welding the partition structure, so that an auxiliary hole formed after welding is reserved in the middle of the partition structure; performing auxiliary hole repair welding and two-end plug welding operation on the sectional material welded with the partition structure so as to obtain a shell primary finished product; and carrying out an air tightness test on the shell primary finished product, obtaining a shell finished product if the test passes, otherwise, carrying out repair welding on the leakage position. The battery shell runner partition welding process based on the harmonica-shaped sectional material has the remarkable effects that the one-time passing rate of a product air tightness test is greatly improved, and the thermal deformation is not obvious.

Description

technical field [0001] The invention relates to the technical field of new energy auto parts processing, in particular to a welding process for blocking flow channels of battery casings based on harmonica-shaped profiles. Background technique [0002] At present, automotive power batteries are basically composed of the following systems: battery modules, battery management systems, thermal management systems, electrical and mechanical systems. Among them, the battery thermal management system is a set of management systems used to ensure that the battery system works within a suitable temperature range from the perspective of use. It is mainly composed of shells, heat transfer media, monitoring equipment and other components. The cooling performance of the power battery directly affects the efficiency of the battery, and also affects the battery life and safety. At present, there are four conventional cooling methods: natural cooling, forced air cooling, liquid cooling, and...

Claims

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Application Information

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IPC IPC(8): B23K20/12
CPCB23K20/122
Inventor 何峰陈世远
Owner 重庆新铝时代科技股份有限公司
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