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Composite battery winding equipment

A composite battery and equipment technology, applied in the field of composite battery winding equipment, can solve the problems affecting the yield and production efficiency of battery cells, the folding or wrinkling of the winding dust pole pieces, and the poor alignment of deviation correction, etc., to reduce the number of pieces. Total quantity, effect of reducing coil dust, reducing the likelihood of folds or wrinkles

Pending Publication Date: 2022-08-09
DONGGUAN ARECONN PRECISION MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of winding machine has a series of problems in the production process, such as difficult tension control, poor alignment, winding dust, and prone to pole piece discounts or wrinkles, which in turn affects the cell yield and production efficiency.

Method used

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  • Composite battery winding equipment
  • Composite battery winding equipment
  • Composite battery winding equipment

Examples

Experimental program
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Effect test

Embodiment 1

[0037] This embodiment provides a composite battery winding device. The device consists of a positive electrode composite unit, a negative electrode composite unit, and a positive and negative composite unit connecting the positive electrode composite unit and the negative electrode composite unit. The positive electrode composite unit is used for the positive electrode sheet 11. The head and tail are heated and combined with the first separator 12 to form a positive composite sheet, and the negative composite unit is used to heat the head and tail of the negative sheet 13 and the second separator 14 to form a negative composite sheet. The positive and negative composite units are used for The positive electrode composite sheet body and the negative electrode composite sheet body are wound to form a battery cell, and the head, turning portion and tail portion of the battery cell are heated and composited in turn to form a cell such as Figures 1 to 4 Head compound 15, corner co...

Embodiment 2

[0042] The difference between this embodiment and the first embodiment lies in the compounding method of the battery cells. The positive electrode sheet 11 and the first separator 12 are heated and compounded over the entire length of the positive electrode compound unit to form a positive electrode compound sheet body. The whole length of the second separator 14 is heated and composited to form a negative electrode composite sheet, and then the positive and negative composite sheets are compositely wound through the positive and negative composite units to form a composite sheet such as Figures 11 to 14 cells shown.

[0043] In summary, the composite battery winding equipment has the following characteristics:

[0044] 1) First, the positive electrode sheet and the first separator are compounded to form a positive electrode composite sheet body, the negative electrode sheet and the second separator are compounded to form a negative electrode composite sheet body, and then th...

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Abstract

The invention discloses composite battery winding equipment which consists of a positive electrode composite unit, a negative electrode composite unit and a positive and negative composite unit for connecting the positive electrode composite unit and the negative electrode composite unit, the positive pole composite unit is used for heating and compounding a positive pole piece and a first diaphragm to form a positive pole composite piece body; the negative pole composite unit is used for heating and compounding a negative pole piece and a second diaphragm to form a negative pole composite piece body; and the positive and negative composite unit forms a battery cell by compositely winding the positive composite sheet body and the negative composite sheet body. On one hand, the total number of sheets entering a winding process can be reduced, so that the alignment difficulty of positive and negative pole sheets and a diaphragm is reduced, the possibility that the positive and negative pole sheets are not aligned with each other is reduced, the winding alignment precision is improved, winding dust is reduced, tension control is easier, low-tension control can be realized, and the production efficiency is improved; and on the other hand, the possibility of folding or wrinkling when the positive and negative pole pieces enter the winding process can be reduced, and the yield of the battery cell can be improved.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a composite battery winding device. Background technique [0002] With the development of society, human beings pay more and more attention to the importance of protecting the environment. Therefore, new energy vehicles are widely used as means of transportation with good environmental friendliness. The power source of new energy vehicles is mainly the power battery. In the power battery processing equipment, the battery cells that form the power battery are wound by the winding machine, making the winding machine an important equipment for producing the power battery. However, the currently equipped winding machine basically adopts a process in which the positive electrode sheet, the first separator, the negative electrode sheet, and the second separator are simultaneously wound on the winding needle and then cut. This type of winding machine has a series of problems in the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/04
CPCH01M10/0404Y02P70/50Y02E60/10
Inventor 严海宏柳洪健朱佑琦
Owner DONGGUAN ARECONN PRECISION MACHINERY
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