Metal shell welding method and metal shell

A metal shell, welding method technology, applied in welding equipment, laser welding equipment, metal processing equipment, etc., can solve the problems of shell warping, virtual welding, deformation, etc., to reduce warping, high pulse frequency, improve The effect of fit

Pending Publication Date: 2022-02-08
SHENZHEN JIXIANGYUN TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a metal shell welding method, which aims to solve the technical problems of shell warping, deformation, and false welding in the existing welding lithium battery shell.

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  • Metal shell welding method and metal shell
  • Metal shell welding method and metal shell
  • Metal shell welding method and metal shell

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Embodiment Construction

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0029] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain each If the relative positional relationship, movement conditions, etc. between the components change, the directional indication will also change accordingly.

[0030] It should also be noted that when an element is referred to as being “fixed” or “disposed on” another eleme...

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Abstract

The invention discloses a metal shell welding method which is suitable for a lithium battery shell. The metal shell welding method comprises the steps of laminating and stacking an upper metal shell and a lower metal shell on a clamp base, and pressing the upper metal shell and the lower metal shell by a clamp pressing block, wherein the flatness of the binding surface of the clamp pressing block and the clamp base is less than 0.05 mm; and scanning the surface of the metal upper shell along the welding track by adopting a nanosecond laser to form a welding seam to connect the metal upper shell and the metal lower shell. According to the metal shell welding method, the flatness of the binding surface of the clamp pressing block and the clamp base is 0.05 mm or less, the binding degree of the clamp and the upper metal shell and the lower metal shell is improved, meanwhile, the nanosecond laser is adopted for welding, compared with a quasi-continuous laser, the advantages of being high in pulse frequency, concentrated in energy density, small in heat affected zone and the like are achieved, the phenomena of tilting, deformation and the like of the metal shell in the welding process are reduced, and the sealing performance of the metal shell is improved.

Description

technical field [0001] The invention relates to the field of welding technology, in particular to a metal shell welding method and a metal shell made by the method. Background technique [0002] Due to its high strength and strong corrosion resistance, as well as light weight, beautiful appearance and low price, stainless steel sheets are widely used in the lithium battery industry. [0003] The lithium battery case includes an upper case and a lower case. In the prior art, quasi-continuous laser welding is generally used to realize the connection of the upper and lower cases of the lithium battery case, and the pressing of the upper and lower cases is not tight enough, resulting in the occurrence of shells when welding stainless steel sheets. Defects such as body warping and deformation greatly reduce the sealing performance of the lithium battery case. Contents of the invention [0004] The main purpose of the present invention is to provide a metal casing welding metho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/24B23K26/70
CPCB23K26/24B23K26/702
Inventor 黄再福陈燕陈苏文胡柳平
Owner SHENZHEN JIXIANGYUN TECH CO LTD
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