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Hot press molding method and hot press molding device for pole piece

A technology of hot pressing forming and pole piece, which is applied in the directions of electrode rolling/calendering, electrode manufacturing, and final product manufacturing. The effect of difficulty in assembly and simple matching

Active Publication Date: 2021-06-29
SVOLT ENERGY TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At the same time, when the pole group is formed, problems such as poor alignment and short circuit are detected, and the entire pole group will not be able to be used again, resulting in a large amount of loss

Method used

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  • Hot press molding method and hot press molding device for pole piece
  • Hot press molding method and hot press molding device for pole piece
  • Hot press molding method and hot press molding device for pole piece

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Embodiment Construction

[0039] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0040] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0041] The thermocompression forming method of a pole piece according to an embodiment of the present invention includes the following steps: S1: conveying the pole piece and rolling the pole piece to compact the pole piece; S2: feeding the compacted pole piece The upper surface and the lower surface of the upper and lower surfaces respectively transport the first diaphragm and the second diaphragm; S3: press the first diaphragm, the second diaphragm and the pole piece into one.

[0042] Specifically, refer to figure 1 and figure 2 In this application, the pole piece is conveyed by the pole piece unwinding shaft, and the pole piece is rolled by the pressing roller structure to increas...

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Abstract

The invention provides a hot press forming method and device for a pole piece, and the method comprises the steps: S1, conveying the pole piece, and carrying out the rolling of the pole piece, so as to compact the pole piece; S2, respectively conveying a first diaphragm and a second diaphragm to the upper surface and the lower surface of the compacted pole piece; and S3, performing hot pressing on the first diaphragm, the second diaphragm and the pole piece into a whole. Therefore, the pole piece, the first diaphragm and the second diaphragm are hot-pressed into a whole, and the matching mode of the pole piece, the first diaphragm and the second diaphragm is simple and high in reliability. The pole piece, the first diaphragm and the second diaphragm which are pressed together are subjected to die cutting forming in the subsequent die cutting process, and when the pole piece is the negative pole piece, the negative pole piece, the first diaphragm, the second diaphragm and the positive pole piece which are formed and pressed together are assembled together in the assembling process, the assembling difficulty of the pole group can be reduced, and the assembling efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of battery production, in particular to a thermocompression molding method and thermocompression molding device for pole pieces. Background technique [0002] At present, two processes of stacking and winding are mainly used in the production of pole groups. [0003] In related technologies, the positive electrode, negative electrode, and diaphragm need to be assembled during the production process of the electrode group, and the distance between the positive electrode and the diaphragm and the distance between the negative electrode and the diaphragm need to be confirmed during the assembly process, resulting in low production efficiency. Low, in the process of stacking or winding, there is a certain gap between the positive electrode sheet and the diaphragm, the negative electrode sheet and the diaphragm, and foreign matter is easy to enter, resulting in a poor electrode group, and the diaphragm is easy to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/04H01M10/04
CPCH01M4/0435H01M10/0468Y02P70/50Y02E60/10
Inventor 丁亚男马毅杨树涛张良立
Owner SVOLT ENERGY TECHNOLOGY CO LTD
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