Method for removing powder and attaching glue for tab locations of pole pieces
A pole piece and tab technology, which is applied in the direction of electrical components, circuits, battery pack components, etc., can solve the problems of high packaging requirements, large environmental pollution, strong corrosion, etc., and achieve low processing cost, high control precision, and eliminate dust effect
Inactive Publication Date: 2017-01-04
四川赛尔雷新能源科技有限公司
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- Abstract
- Description
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- Application Information
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Problems solved by technology
[0003] The electrolyte of the traditional lithium-ion battery is a liquid electrolyte, and the liquid electrolyte has problems such as low safety, strong corrosion, high packaging requirements, large environmental pollution and high cost.
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment 1
[0030] Embodiment 1 uses a laser to burn the powder-removing area at the tab of the pole piece; first, the laser is focused according to the distance from the laser source to the powder-removing area at the tab of the pole piece and the depth of the powder-removing area, so that the powder to be removed The powder area is within the Rayleigh length of the laser, ensuring that the burning range of each depth in the powder removal area is within a controllable normal range; then accurately locate the powder removal area to prevent multiple removals due to inaccurate positioning The problem of powder or non-powder removal; finally, laser burning is used to complete the powder removal of the area to be removed at the ear of the pole piece.
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The invention discloses a method for removing powder and attaching glue for tab locations of pole pieces. The method includes steps of S1, fixedly placing the pole pieces with the powder required to be removed on fixtures; S2, positioning regions, with the powder required to be removed, of the tab locations in laser firing or grinding modes; S3, starting laser light to fire the regions, with the powder required to be removed, of the tab locations to remove the powder or grinding the regions, with the powder required to be removed, of the tab locations to remove the powder in the grinding modes; S4, starting a vacuum dust collection device to clean dust generated due to laser firing or grinding in the regions with the powder required to be removed; S5, turning the pole pieces over, repeatedly carrying out previous steps and completely removing the powder at the tab locations on the other surface of each pole piece; S6, attaching the insulating glue onto the regions, without the powder, of the tab locations on two surfaces of each pole piece by the aid of double-side glue attaching equipment. The method has the advantages that the powder at the tab locations of the pole pieces can be effectively removed by the aid of the method, the thicknesses of the regions without the powder are assuredly identical to the thicknesses of other film-coated regions, and accordingly the thicknesses and the appearance of batteries can be guaranteed against being affected.
Description
technical field [0001] The invention relates to the technical field of lithium-ion batteries, in particular to a method for removing powder and pasting glue on the lugs of pole pieces. Background technique [0002] At present, the tab of the pole piece is a raw material for lithium-ion polymer battery products, and it is a metal conductor that leads the positive and negative electrodes out of the battery cell. That is to say, the tab is the ear of the positive and negative poles of the battery. Contact point for charging and discharging. [0003] The electrolyte of the traditional lithium-ion battery is a liquid electrolyte, and the liquid electrolyte has problems such as low safety, strong corrosion, high packaging requirements, large environmental pollution and high cost. The use of semi-solid gel electrolyte can solve these problems very well, but the gel electrolyte needs to remove the powder on the tab of the pole piece. If the powder is not removed, the thickness of t...
Claims
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IPC IPC(8): H01M2/26H01M50/531
CPCH01M50/531Y02E60/10
Inventor 杨维元
Owner 四川赛尔雷新能源科技有限公司
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