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Pole piece winding method and thin film slitting and winding device

A film slitting and rewinding device technology, which is applied in the direction of winding strips, thin material processing, transportation and packaging, etc., can solve the problems of high battery cost, large fixed loss of pole pieces, and scrapped pole pieces.

Inactive Publication Date: 2020-10-16
HUBEI JINQUAN NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in this method, the surface of the pole piece in the area where the tape is adhered is likely to be powdered under the action of the tape, which will make the pole piece around the outer circumference of the pole piece roll scrapped. Due to the large number of pole piece rolls produced on the mass production line, The fixed loss of the pole piece caused by it is very large, which makes the cost of the produced battery higher

Method used

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  • Pole piece winding method and thin film slitting and winding device
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Embodiment Construction

[0033] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only the technical solutions of the present invention. Some, but not all, embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

[0034] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a d...

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Abstract

The invention relates to the technical field of battery manufacture and discloses a pole piece winding method and a thin film slitting and winding device. The pole piece winding method comprises following steps: a thin film is slit into a long strip-shaped auxiliary thin film with preset width; one end of an adhesive tape is bonded to one end of the auxiliary thin film; a pole piece strip is woundto form a pole piece coil; the other end of the adhesive tape is bonded to the pole piece coil, the auxiliary thin film wraps and winds around the pole piece coil, and the pole piece coil is tightened. According to the structure, the pole piece winding method can reduce scrapping of pole pieces, reduce fixed loss of the pole pieces and reduce production cost of batteries.

Description

technical field [0001] The invention relates to the technical field of battery manufacturing, in particular to a pole piece winding method and a film cutting and winding device. Background technique [0002] With the country's strong support for the new energy industry, new energy vehicles have become the main trend of future automotive development, which has led to an increasing demand for power batteries. In order to increase profits, all battery manufacturers have taken improving product yield as a the main goal. At present, in the field of battery manufacturing, the yield rate of products in mature battery production lines has basically been finalized, and there is little room for improvement. Among them, the main product defect is the fixed loss of the product, such as the loss of the pole piece in the process of splicing, winding and gluing. Due to the high output of products on the mass production line, the fixed loss caused by it is also extremely considerable, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65H35/02B65H16/06B65H18/10B65H23/26B65H23/188
CPCB65H35/02B65H16/06B65H18/106B65H18/103B65H23/26B65H23/1888B65H2701/1133B65H2701/1752
Inventor 李迪武江俊锋李恒徐波马成勇
Owner HUBEI JINQUAN NEW MATERIALS CO LTD