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Lithium ion battery pole piece surface treatment method and system

A lithium-ion battery and surface treatment technology, which is applied in the direction of battery electrodes, circuits, electrical components, etc., can solve the problems of high stability and reliability of treatment quality, high cost and low motion control speed, etc. , to achieve the effect of improving laser processing efficiency, low processing cost and improving processing efficiency

Pending Publication Date: 2022-05-13
深圳华工新能源装备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the processing process, the currently developed solutions include mechanical processing and the use of mechanical axes to control the movement of the laser head to realize the perforation of the pole piece. These methods are complicated to operate, and the processing quality is difficult to achieve high stability and reliability, and Due to the low speed of motion control in the current solution, a huge amount of equipment is required to process large-area battery pole pieces to meet the capacity needs of end customers, which leads to high costs and cannot be used in mass production

Method used

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  • Lithium ion battery pole piece surface treatment method and system
  • Lithium ion battery pole piece surface treatment method and system

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Effect test

Embodiment 1

[0027] Such as figure 1 , the embodiment of the present invention provides a lithium-ion battery pole piece surface treatment method, comprising:

[0028] Hold the battery pole piece 5 by the clamp and make the surface of the battery pole piece 5 smooth;

[0029] The laser 1 emits laser light, splits the single laser beam into multiple laser beams, guides the multiple laser beams to the focusing lens 4 through the rotating mirror 3, and focuses the multiple laser beams on the battery pole pieces 5 respectively by the focusing lens 4 A plurality of holes or grooves are formed on the battery pole piece 5 .

[0030] Preferably, the above-mentioned clamp adopts a roller-type clamp. In one of the embodiments, a double roller structure is adopted, and the battery pole piece 5 is stretched flat by the tension of two sets of rollers, and the bottom of the pole piece is emptied; in another embodiment, a single roller structure is adopted, and the The battery pole piece 5 is coated o...

Embodiment 2

[0042] Such as figure 1 , an embodiment of the present invention provides a lithium-ion battery pole piece surface treatment system, including:

[0043] laser 1;

[0044] A jig for clamping the battery pole piece 5 and making the surface of the battery pole piece 5 smooth;

[0045] A beam splitter 2, a rotating mirror 3 and a focusing lens 4; the beam splitting mirror 2 is arranged on the laser output path of the laser 1, and is used to split a single laser beam into multiple laser beams; the rotating mirror 3 is arranged on the The focus lens 4 is arranged on the light output path of the rotating mirror 3 and can focus multiple laser beams onto the surface of the battery pole piece 5 respectively.

[0046] The relevant structure of the processing system has been mentioned in the first embodiment above, and will not be repeated here.

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Abstract

The invention relates to a lithium ion battery pole piece surface treatment method. The method comprises the steps that a battery pole piece is clamped through a clamp, and the surface of the battery pole piece is flattened; the laser device emits laser, a single laser beam is split into multiple laser beams, the multiple laser beams are guided to the focusing lens through the rotating mirror, the focusing lens focuses the multiple laser beams to the surface of the battery pole piece, and multiple holes or grooves are formed in the battery pole piece. Correspondingly, the invention further provides a lithium ion battery pole piece surface treatment system. The combination of light splitting, the rotating mirror and the focusing lens is adopted, multiple beams of laser generated by light splitting can be processed on the battery pole piece at the same time, and the processing efficiency can be remarkably improved; deflection of multiple beams of laser is completed through the rotating mirror, various processing delays do not exist, the laser processing efficiency can be obviously improved, and the processing efficiency can be increased by geometric multiples in combination with the light splitting mode; according to the invention, mass production of lithium ion battery pole pieces, especially mass production of large-area battery pole pieces, can be realized.

Description

technical field [0001] The invention relates to a method for treating the surface of a pole piece of a lithium ion battery and a surface treatment system for a pole piece of a lithium ion battery. Background technique [0002] Lithium-ion batteries are developed from lithium batteries. Its remarkable advantage is that it does not need to be charged after assembly. Compared with lithium batteries, it has the characteristics of long service life, low price, and no memory effect. Lithium-ion batteries are mainly composed of positive and negative electrodes with different high and low potentials, a diaphragm that acts as a thermal insurance and high resistance to puncture, an electrolyte containing dissolved lithium salts, and a steel sheet or iron sheet with an explosion-proof power-off function. And discharge two working modes. During the charging process, the positive electrode with high potential releases lithium ions and moves to the negative electrode through the diaphrag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/139B23K26/38B23K26/382
CPCH01M4/139B23K26/382B23K26/38
Inventor 江硕江柏霖张坤赵唯刘诚诚李芷菲
Owner 深圳华工新能源装备有限公司
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