Circular winding needle discharging device
A technology for rolling needles and rolling needles is applied in the field of cutting devices for circular rolling needles, which can solve the problems of lowering the quality of battery cells, producing defective products, and prone to collapse, achieving high cutting efficiency, improving processing quality and structure. compact effect
Pending Publication Date: 2019-11-12
SHENZHEN YINGHE TECH
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Problems solved by technology
When the battery is removed from the needle, the center of the battery loses the support of the needle and is prone to collapse. In this way, the inner layer of the battery will wrinkle after being flattened, which will lead to a decline in the production quality of the battery and even produce defective products.
Method used
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[0026] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.
[0027] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for purposes of ill...
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The invention relates to a circular winding needle discharging device. The device comprises a winding needle and a tensioning mechanism. The winding needle is used for winding the battery core. The tensioning mechanism comprises a displacement assembly and two tensioning assemblies, wherein the two tensioning assemblies are arranged on the displacement assembly at intervals, and the two tensioningassemblies are both arranged towards the winding needle; the displacement assembly translates towards the direction approaching or away from the winding needle; and the displacement assembly is usedfor driving the two tensioning assemblies to approach or away from each other. In one tensioning assembly, the tensioning assembly comprises an inner pressure piece and an outer support piece, whereinthe inner pressure piece is used for abutting against the inner wall of the battery core, and the outer support piece is used for abutting against the outer wall of the battery core. The tension mechanism and the winding needle have compact structures, and the battery core blanking efficiency is high; when the tension mechanism takes down the battery core on the winding needle, the battery core is kept in a tensioned state, so that problems such as collapse, dislocation, core pulling and like caused by loss of support in the battery core during the handover process are avoided; and the battery core is flattened by the tension mechanism, wrinkles after the battery core is formed are avoided, and the processing quality of the battery core is further improved.
Description
technical field [0001] The invention relates to the field of battery processing, in particular to a circular needle blanking device. Background technique [0002] The battery cell of the lithium battery includes a separator and a pole piece. The separator and the pole piece are wound into a bundle by a rolling needle, and are flattened at a pressing station to form a battery core. In this process, it is necessary to remove the electric core wound on the outer wall of the needle to press and hold the electric core to form the electric core. When the cell is removed from the needle, the center of the cell is prone to collapse without the support of the needle, so that the inner layer of the cell will wrinkle after being flattened, resulting in a decrease in the production quality of the cell, and even a defective product. Therefore, how to maintain the shape of the battery cells during the transfer process and reduce the probability of defective products is a problem to be so...
Claims
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IPC IPC(8): B21C47/04B21C47/24B21C47/28H01M10/0587H01M6/14
CPCB21C47/04B21C47/24B21C47/28H01M10/0587H01M6/14Y02E60/10Y02P70/50
Inventor 严海宏姜小虎罗二天
Owner SHENZHEN YINGHE TECH