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Box cover spot welding mechanism for cylindrical battery and method

A cylindrical battery and lid point technology, applied in welding equipment, laser welding equipment, climate sustainability, etc., can solve the problems of aluminum shell fit, difficult cover plate, etc., to achieve a guaranteed pass rate, reasonable structure, and improved lid closure Effects on Quality and Yield

Active Publication Date: 2021-07-30
HEFEI GUOXUAN HIGH TECH POWER ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is: how to solve the problem in the prior art that the cover plate of a cylindrical battery is difficult to fit accurately with the aluminum shell due to a certain deviation in size between the cover plate and the aluminum shell

Method used

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  • Box cover spot welding mechanism for cylindrical battery and method
  • Box cover spot welding mechanism for cylindrical battery and method
  • Box cover spot welding mechanism for cylindrical battery and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Such as figure 1 , figure 2 As shown, the box cover spot welding mechanism of the cylindrical battery includes a pre-box cover assembly 1, a box cover assembly 2, a coaxiality adjustment assembly 3, a battery transfer assembly 4, and a laser spot welding assembly 5. The transfer assembly 4 sequentially passes through the pre-cover assembly 1, the cover assembly 2, and the laser spot welding assembly 5, and moves the cylindrical battery 6 to the pre-cover station in sequence, and realizes the cylindrical battery through the pre-cover assembly 1. 6, the box cover is realized by the box cover assembly 2 at the box cover station, and the spot welding is realized by the laser spot welding assembly 5 at the spot welding station, and the coaxiality adjustment assembly 3 is respectively located in the battery transfer assembly into two sides of 4;

[0065] The pre-cover assembly 1 includes a first positioning assembly 11, a first knocking assembly 12, two first three-jaw pos...

Embodiment 2

[0084] Such as Figure 12 As shown, on the basis of the first embodiment above, the coaxiality adjustment assembly 3 includes a bottom plate 31 and a top plate 32. Both sides of the bottom plate 31 have upward bending edges. Specifically, the bottom plate 31 has a top end and a top plate 32. A rectangular boxed structure close to the opening on one side of the cylindrical battery 6, the two sides of the top plate 32 are connected to the bending edge by adjusting bolts 33, and the top plate 32 is connected to the bottom plate 31 by vertically arranged adjusting bolts 33. The top plate 32 is located inside or above the bottom plate 31; the top plate 32 can be adjusted horizontally, reversely, left and right through the adjusting bolts 33 on the side, and the height adjustment in the vertical direction can be realized through the adjusting bolts 33 in the vertical direction. The first three-jaw positioning assembly 13 and the second three-jaw positioning assembly 23 are connected...

Embodiment 3

[0088] Such as Figure 13 As shown, on the basis of the second embodiment above, the battery transfer assembly 4 includes a transfer motor 41, a first roller 42, a second roller 43, a transfer belt 44, and a battery tank 45, and the first roller 42 and the Described second roller 43 is connected with described transfer motor 41 respectively, and described first roller 42 and described second roller 43 are connected by described transfer belt 44, and described transfer belt 44 runs through pre-box cover assembly 1, box cover Assembly 2 and laser spot welding assembly 5 , the battery slots 45 are evenly spaced and connected to the outside of the transfer belt 44 .

[0089] Transmission mode can adopt belt transmission or chain transmission, and the top of battery tank 45 is arc-shaped, matches the profile of cylindrical battery 6, and the distance between adjacent battery tanks 45 is compatible with pre-cover station and box cover station.

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Abstract

The invention discloses a box cover spot welding mechanism for a cylindrical battery. The mechanism comprises a box cover pre-assembly, a box cover assembly, coaxiality adjusting assemblies, a battery transfer assembly and a laser spot welding assembly, wherein the battery transfer assembly sequentially penetrates through the box cover pre-assembly, the box cover assembly and the laser spot welding assembly, and the coaxiality adjusting assemblies are located on the two sides of the battery transfer assembly respectively. The box cover pre-assembly comprises a first positioning assembly, a first knocking assembly and a first three-jaw positioning assembly. The box cover assembly comprises a second positioning assembly, a second knocking assembly and a second three-jaw positioning assembly. The bottoms of the first three-jaw positioning assembly and the second three-jaw positioning assembly which are located on the same side are installed on the same coaxiality adjusting assembly. The invention further discloses a method adopting the box cover spot welding mechanism for the cylindrical battery. The method has the beneficial effects that a cover plate and an aluminum shell are positioned, preliminarily shaped and knocked, so that the percent of pass of box covers is ensured; and battery transfer, battery cover closing and laser spot welding can be automatically completed, and the production efficiency is remarkably improved.

Description

technical field [0001] The invention relates to the technical field of power lithium battery production, in particular to a lid closing and spot welding mechanism and method for a cylindrical battery. Background technique [0002] As a new type of functional battery, power lithium battery has the advantages of high energy, high battery voltage, wide operating temperature range, and long storage life. It has been widely used in new energy vehicles and communication base stations. [0003] In the production of cylindrical lithium-ion batteries, after the equipment pushes the flattened winding core into the aluminum shell, the cover plate collector plate is welded to the end face of the winding core through laser pulse welding, and the cover plate is basically aligned with the aluminum shell after bending. concentric. Due to the certain deviation between the size of the cylindrical battery cover plate and the aluminum shell, it is difficult to accurately fit the cover plate wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/22B23K26/70
CPCB23K26/22B23K26/70B23K26/702Y02P70/50
Inventor 付勇
Owner HEFEI GUOXUAN HIGH TECH POWER ENERGY
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