A tab punching method applied to battery winding process
A technology of battery coils and tabs, which is applied in the direction of secondary batteries, battery pack components, circuits, etc., can solve the problems of unfavorable battery safety, single die punching with steps, etc., to improve safety and punch forming The effect of high efficiency and prolonging the use time
Active Publication Date: 2020-05-05
GUANGDONG SUNIVE INTELLIGENT EQUIP CO LTD
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Problems solved by technology
[0003] The object of the present invention is to provide a tab punching method applied to the battery winding process in view of the deficiencies in the prior art. The tab punching method applied to the battery winding process not only has punching forming It has the characteristics of high efficiency, and solves the problem that there is a step in the punching of a single die, which is not conducive to the safety of the battery.
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[0036] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the 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.
[0037] In this embodiment, the number of tabs included in the winding process is 5 for illustration. Such as figure 1 and figure 2 shown.
[0038] A tab punching method applied to the battery winding process of this embodiment includes the following steps:
[0039] The first step is to design the lug punching device: the pole piece 101 is pulled by the traction mechanism 102, and passes through the first installation mold 103 with the first mold core 131 installed and the second installation mold 104 with the second mold core 141 installed in sequence, Through the punching of the first insta...
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The present invention relates to the technical field of lithium battery tab punching, in particular to a tab punching method applied to the battery winding process, the tab punching method applied to the battery winding process, comprising: the first step, Design the lug punching device; the second step: through the alternate punching of the first installation mold and the second installation mold. The tab punching method utilizes the first mounting mold and the second mounting mold with different punching edge sizes, and cooperates with the belt-running form to complete the punching of variable tab width and variable tab center distance. Therefore, the lug punching method not only has the characteristics of high punching forming efficiency, but also solves the problem that a single die punching has a step opening, which is not conducive to battery safety. Among them, the punching efficiency is double the efficiency of the original equipment. In the case of the same equipment efficiency, the frequency of use of single-mode molds and cores is indirectly reduced, and the use time of mold cores is prolonged.
Description
technical field [0001] The invention relates to the technical field of lithium battery tab punching, in particular to a tab punching method applied to a battery winding process. Background technique [0002] In the existing lithium battery technology field, the front-end die-cut pole piece forming technology in the battery forming process is becoming more and more mature, and the forming technology is also becoming more and more perfect. However, the common pole piece tab forming technology used in the winding process of battery production is mostly single-die punching. For the process of variable lug width and variable lug center distance, single die punching must be superimposed and punched multiple times in the middle of adjacent tabs to complete. This poses great limitations to the operation and forming efficiency of the whole machine, and there will be steps between the tabs after superimposed punching, which will pose a hidden danger to the safety of the battery. Co...
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IPC IPC(8): B21D28/06H01M2/26H01M10/0587H01M50/538
CPCY02E60/10Y02P70/50
Inventor 李红竞冯小康张淮葛良羽罗任佐
Owner GUANGDONG SUNIVE INTELLIGENT EQUIP CO LTD