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Battery cell winding method and equipment

A kind of battery core and equipment technology, applied in the field of battery core winding method and equipment

Active Publication Date: 2015-04-15
NINGDE AMPEREX TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The first purpose of the present invention is to provide a battery winding method for the deficiencies of the prior art, through which the deformation problem of the battery cores wound out automatically and continuously can be improved, thereby ensuring the performance of the battery cores

Method used

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  • Battery cell winding method and equipment

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Experimental program
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Effect test

Embodiment 1

[0031] see figure 1 , a battery winding device of the present invention, the device comprises a frame 1, a motor 2 arranged in the frame 1, a positive electrode sheet feeding mechanism 31 fixedly connected to the frame, a negative electrode sheet feeding mechanism 41, an isolation The film feeding mechanism 5 and the winding mechanism 6 also include a positive electrode sheet heating mechanism 32 and a negative electrode sheet heating mechanism 42 .

[0032] The positive electrode sheet feeding mechanism 31, the negative electrode sheet feeding mechanism 41, and the separator feeding mechanism 5 are distributed around the winding mechanism 6, so that the materials can be concentrated in one place to complete the winding action.

[0033] The positive electrode sheet feeding mechanism 31, the negative electrode sheet feeding mechanism 41, and the separator feeding mechanism 5 are sequentially provided with a positive electrode sheet tension adjustment shaft 30, a negative electr...

Embodiment 2

[0038] see figure 2 , the present invention is a kind of battery winding equipment, the heating method of the positive plate heating mechanism 32 and the negative plate heating mechanism 42 is infrared heating. The positive pole piece heating mechanism 32 and the negative pole piece heating mechanism 42 are arranged outside the whole roll of pole piece, to heat the single pole piece before winding, so that the pole piece can be heated more evenly. Others are the same as in Embodiment 1, and will not be repeated here.

[0039] The steps of the cell winding method are as follows:

[0040] First, prepare the pole piece and the isolation film. The pole piece and the isolation film should be prepared into continuous coils to facilitate continuous production. Then install the pole piece and the isolation film. The adjustment method is directional installation; second, start the motor and the positive and negative electrode heating mechanism, set the temperature in the positive el...

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Abstract

The invention discloses a battery cell winding method and equipment. According to the method, a positive pole piece and a negative pole piece are heated before winding, so the stress of the pole pieces is sufficiently released, the pole pieces are lengthened to a certain degree under the tensile action during winding, after the winding is finished, the pole pieces contract along with an isolation film in the cooling process, and the deformation of the battery cell is accordingly improved. The equipment comprises a machine frame, a motor arranged in the machine frame, a positive pole piece feeding mechanism, a negative pole piece feeding mechanism, an isolation film feeding mechanism and a winding mechanism which are fixedly connected with the machine frame respectively, wherein the machine frame is also connected with a positive pole piece heating mechanism and a negative pole piece heating mechanism. The beneficial effects of the technical scheme are as follows: the method is simple and practical, and can be applicable to automation continuous production; and the equipment is simple to operate, the heating mechanisms are easy, and the large-scale manufacturing is facilitated.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a battery winding method and equipment. Background technique [0002] With the continuous development of modern society, mobile devices such as smart phones, laptops, cameras and EV (electric vehicles) will be more and more widely used, thus forming a large demand for batteries. [0003] Winding is a very important process in the battery production process. With the development of science and technology, the degree of automation of the winding process is getting higher and higher. During the automatic winding process, a large pulling force must be applied to the pole piece and the separator to ensure the orderliness between the positive electrode piece and the negative electrode piece and between the separator film and the positive electrode piece. However, the pulling force during the winding process will extend the separator in the Mechanical Direction (MD). After the windin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/04
CPCY02E60/10Y02P70/50
Inventor 史册
Owner NINGDE AMPEREX TECH
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