Assembly structure of lithium ion battery tab
A lithium-ion battery and assembly structure technology, which is applied to secondary batteries, structural parts, battery pack parts, etc., can solve problems such as shaking, potential safety hazards, and easy breakage of false tabs, so as to reduce the probability of breakage and improve safety. Performance, Enhanced Stability Effects
Inactive Publication Date: 2020-03-17
周玉萍
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Problems solved by technology
[0003] The tabs of the laminated winding core have poor stability and shaking, which is not conducive to the subsequent production process operations. At the same time, during the shaking process, the false tabs are easy to break, which has a certain impact on the basic performance of the battery core, and there are certain safety hazards
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[0015] A kind of assembly structure of lithium ion battery tab, such as figure 1 , figure 2 , image 3 As shown, it includes the battery core body 3, the top of the battery core body 3 is connected with the negative tab 1 and the positive tab 2 by ultrasonic welding, and the tab glue 6 is connected to the welded part; the left and right sides of the battery core body 3 There are three side glues 4 attached to each side; the top of the battery core body 3 is provided with tab fixing glue 7, and the tab fixing glue 7 starts from one side of the battery core body 3 and extends to the battery core the top of the main body 3, and stick the connection between the negative tab 1 and the positive tab 2 and the battery core body 3, and then extend to the other side of the battery core body 3; the top and bottom of the battery core body 3 are respectively connected There are top glue 8 and bottom glue 5; the top glue 8 is located between the negative tab 1 and the positive tab 2 to s...
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The invention discloses an assembly structure of a lithium ion battery tab. The assembly structure comprises a battery roll core body, the top end of the battery roll core body is connected with a negative tab and a positive tab through ultrasonic welding, and a welding part is connected with a tab adhesive glue. The side glue is respectively adhered to the left side and the right side of the battery roll core body, the tab fixing glue is arranged at the top end of the battery roll core body, starts to be adhered from one side of the battery roll core body, extends to the top end of the battery roll core body, is used for gluing the joint of the negative tab and the battery roll core body and the joint of the positive tab and the battery roll core body, and then extends to the other side of the battery roll core body, and the top and the bottom of the battery roll core body are respectively connected with the top glue and the bottom glue. According to the present invention, the stability of the roll core tab is enhanced, the breakage probability of the tab in the shaking process is reduced, the safety performance of the battery roll core is improved, the subsequent packaging can bemore convenient and stable, and the practicability is higher.
Description
technical field [0001] The invention relates to the technical field of lithium ion batteries, in particular to an assembly structure of lithium ion battery tabs. Background technique [0002] At present, laminated lithium-ion batteries mainly include Z-shaped laminates and wound-type laminates. Z-shaped laminates are mainly formed by cutting and punching the positive and negative pole pieces respectively to form a single battery with false tabs. The diaphragm is stacked in a Z shape, and the positive and negative poles are stacked sequentially, separated by a diaphragm in the middle. After lamination, the positive and negative dummy tabs and the positive and negative tabs are integrated together by welding. . [0003] The tabs of the laminated winding core have poor stability and shaking, which is not conducive to the subsequent production process operations. At the same time, during the shaking process, the false tabs are easy to break, which has a certain impact on the ba...
Claims
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IPC IPC(8): H01M2/26H01M10/0583
CPCH01M10/0583H01M50/538Y02E60/10Y02P70/50
Inventor 周玉萍
Owner 周玉萍