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A lithium battery electrode sheet roll wrinkle prevention device and method

A lithium battery and pole piece technology, which is applied in electrode rolling/calendering, electrode manufacturing, etc., can solve the problem of not being able to solve the pole piece foil at the same time, reduce the risk of tab tearing, and increase the tear resistance Effect

Active Publication Date: 2018-12-18
CHINA AVIATION LITHIUM BATTERY RES INST CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional solution is to paste Teflon in the blank area of ​​the idler before rolling, but this method cannot solve the problem of simultaneous roll pressure on both sides of the foil AB
In addition, the specifications of the pole rolls after coating are also different, and the single-width and multi-width pole rolls also bring more changes to the coating.

Method used

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  • A lithium battery electrode sheet roll wrinkle prevention device and method
  • A lithium battery electrode sheet roll wrinkle prevention device and method
  • A lithium battery electrode sheet roll wrinkle prevention device and method

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Embodiment Construction

[0023] The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

[0024] Such as Figure 1 to Figure 3 The shown one is a lithium battery pole piece rolling anti-wrinkle device, which is installed after the pole roll is threaded and before the pole piece is passed through the roll. Roller, each group of laminating devices includes a pressure roller assembly and a supporting roller, the pole piece is inserted between the pressing roller assembly and the supporting roller and is pressed against the supporting roller assembly by the pressing roller assembly, and the pressing roller assembly includes a pressing roller Roller, the centerline of the idler roller, the apex of the pole roll arc and the centerline of the pressure ro...

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Abstract

The invention provides a lithium battery electrode sheet anti-wrinkle roller device and an anti-wrinkle method, which can simultaneously coat a pole piece AB surface, reduce the risk of pole ear tearing, simultaneously coat a pole piece AB surface, can transmit the extrusion force to the pole ear head, and increases the anti-tearing ability of the pole ear head. According to different thickness offoil, different thickness of roller and different width of foil, the depressing force of roller can be adjusted, and the bias rectifying bracket and PET film roll can be adjusted or replaced according to the need, which is convenient for different types of lithium batteries to roll.

Description

technical field [0001] The invention relates to the technical field of lithium ion battery production, in particular to a rolling anti-wrinkle device and an anti-wrinkle method for pole pieces of lithium batteries. Background technique [0002] Lithium-ion batteries have the advantages of high output voltage and no memory effect, and have been widely used in mobile phone batteries and electric vehicle industries. At the same time, the waste in the production of lithium-ion batteries is relatively serious, due to ear folds, rolling and broken belts. Battery scrapping is relatively common. [0003] Pole roll is the abbreviation of lithium battery pole piece rolled into a regular cylindrical shape. An important process in the production process of lithium batteries is rolling, the purpose of which is to roll the coated pole roll to the specified compaction density, because the foil in the coating area is squeezed during rolling, and the foil in the blank area Without pressure...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/04
CPCH01M4/0435Y02E60/10
Inventor 胡大华殷久山
Owner CHINA AVIATION LITHIUM BATTERY RES INST CO LTD
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