Tab protection adhesive tape pasting structure of lithium ion battery and control process of tab protection adhesive tape pasting structure

A lithium-ion battery and protective tape technology, applied in the direction of electrolyte battery manufacturing, sustainable manufacturing/processing, non-aqueous electrolyte battery, etc., can solve the problems of diaphragm damage, pole piece edge and tab bending position without protection, etc. Achieve the effect of improving safety performance and avoiding self-discharge

Pending Publication Date: 2017-10-24
LISHEN (QINGDAO) NEW ENERGY CO LTD
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AI Technical Summary

Problems solved by technology

At present, the pasting of the protective tape can cover the tab solder joints and the sheared edges of the tabs, and protect the welding and shearing parts of the tabs, but there is no protection for the edges of the tabs and the bending positions of the tabs. After being used in the environment, due to long-term friction, the diaphragm corresponding to the edge of the positive and negative electrodes and the edge of the tab is damaged, forming self-discharge

Method used

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  • Tab protection adhesive tape pasting structure of lithium ion battery and control process of tab protection adhesive tape pasting structure
  • Tab protection adhesive tape pasting structure of lithium ion battery and control process of tab protection adhesive tape pasting structure

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Embodiment Construction

[0010] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0011] It should be noted that the "connection" mentioned in this application and the words used to express "connection", such as "connected", "connected", etc., include not only a direct connection between a certain component and another component, but also a certain One part is connected to another part through other parts.

[0012] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0013] Such as figure 1 As shown, the application discloses a lithium-ion battery tab protection tape sticking structure, the lithium-ion battery tab protection tape 1 is a high-temperatu...

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Abstract

The invention discloses a tab protection adhesive tape pasting structure of a lithium ion battery and a control process of the tab protection adhesive tape pasting structure. A lithium ion battery tab protection adhesive tape is a high-temperature resistant insulation adhesive tape, and a pasting design is in a way that the protection adhesive tape covers a tab welding region and a pole plate edge and extends out of the pole plate edge. The tab protection adhesive tape pasting design relates to a tab protection welding position, a pole plate edge protection position and a tab bending position, so that a positive pole plate and a negative pole plate are protected by the protection adhesive tape when a battery cell is in a high-vibration electric vehicle application environment relative positions of the positive pole plate and the negative pole plate move and the positive pole plate and the negative pole plate are in friction, a tab bending part is also protected by the protection adhesive tape, automatic discharge caused by damage to a separator at a corresponding position is prevented, and the safety performance of the battery cell is improved.

Description

technical field [0001] The invention relates to the field of lithium-ion battery manufacturing, in particular to a sticking structure and a control process of a lithium-ion battery tab protection tape. Background technique [0002] During the winding process of the cylindrical battery electrode group, the ultrasonic welding of the tabs forms molten solder joints, which are easy to pierce the separator and form a short circuit. It is necessary to paste a protective tape on the welding site for insulation protection. At present, the pasting of the protective tape can cover the tab solder joints and the sheared edges of the tabs, and protect the welding and shearing parts of the tabs, but there is no protection for the edges of the tabs and the bending positions of the tabs. After being used in the environment, due to long-term friction, the diaphragm corresponding to the edge of the positive and negative electrodes and the edge of the tab is damaged, forming self-discharge. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/058
CPCH01M10/058Y02E60/10Y02P70/50
Inventor 周翠英韩彬金菁
Owner LISHEN (QINGDAO) NEW ENERGY CO LTD
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