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Manufacturing method of single high-capacity lithium-ion battery and pole piece coating equipment

A lithium-ion battery and manufacturing method technology, which is applied in the manufacture of electrolyte batteries, battery electrodes, and final product manufacturing, etc., can solve the problems of enlargement, the difficulty of flattening the diaphragm, the displacement of lithium and the like, and achieves a large single capacity and realizes the The effect of increasing the capacity of the single battery and ensuring the quality

Active Publication Date: 2016-09-07
程建聪
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] This application provides a single large-capacity lithium-ion battery manufacturing method and pole piece coating equipment, which solves the problems that the diaphragm is not easy to be flat, shifted, and lithium is separated during the battery assembly process, so the size of the pole piece can be increased. The single capacity of the battery can be made larger

Method used

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  • Manufacturing method of single high-capacity lithium-ion battery and pole piece coating equipment
  • Manufacturing method of single high-capacity lithium-ion battery and pole piece coating equipment
  • Manufacturing method of single high-capacity lithium-ion battery and pole piece coating equipment

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Embodiment 1

[0032] Please refer to figure 2 , the present embodiment provides a single high-capacity lithium-ion battery manufacturing method, comprising the following steps:

[0033] S01: a positive electrode sheet manufacturing step, for coating the prepared positive electrode slurry on the positive electrode current collector to obtain the positive electrode sheet.

[0034] S02: a negative electrode sheet manufacturing step, for coating the prepared negative electrode slurry on the negative electrode current collector to obtain the negative electrode sheet.

[0035] S03: Separator coating step. The separator coating step includes: preparing separator slurry; coating the separator slurry on one or both sides of the positive electrode sheet; and drying the positive electrode sheet coated with the separator slurry.

[0036] S04: The assembly step is used to sequentially stack the positive electrode sheet coated with the separator slurry and the negative electrode sheet according to the...

Embodiment 2

[0061] Please refer to Figure 7 , this embodiment provides a pole piece coating equipment used in the manufacturing method of a single large-capacity lithium-ion battery provided in the first embodiment above, including a first pole piece unwinding device 301, a separator slurry coating device 302, Drying device 303 and winding device 304.

[0062] The first pole piece unwinding device 301 is used for unwinding the whole roll of the first pole piece.

[0063] The diaphragm slurry coating device 302 is used for coating the prepared diaphragm slurry on one or both sides of the first pole piece. Preferably, the diaphragm slurry coating device 302 is used to apply the diaphragm slurry to one or both sides of the first pole piece by slit extrusion coating.

[0064] The drying device 303 is used for drying the first pole piece coated with the diaphragm slurry.

[0065] The winding device 304 is used for winding the first pole piece coated with separator slurry and dried.

[006...

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Abstract

The invention provides a manufacturing method of a single high-capacity lithium-ion battery and pole piece coating equipment. In the method, the surface of a positive pole piece or negative pole piece is directly coated with prepared diaphragm slurry, the pole pieces are superposed after being dried, and after a battery cell is prepared, steps of encasing, liquid injecting and the like are carried out to obtain a finished product of the battery. According to the manufacturing method of the single high-capacity lithium-ion battery and pole piece coating equipment, provided by the invention, by the mode of directly coating the positive pole piece or negative pole piece with the diaphragm slurry, the problems of difficult leveling of a diaphragm, displacement, separation of lithium and the like in the process of assembling the battery are solved, thereby well ensuring the quality of the battery and realizing high capacity of the single battery.

Description

technical field [0001] The present application relates to the technical field of lithium-ion battery manufacturing, in particular to a lithium-ion battery manufacturing method and pole piece coating equipment, in particular to a single high-capacity lithium-ion battery manufacturing method and pole piece coating equipment. Background technique [0002] With the development of the new energy automobile industry, more and more attention is paid to the endurance of automobiles. How to improve the endurance of automobiles is also a technical difficulty that needs to be tackled in the industry. In order to improve the battery life of the car, it is mainly necessary to increase the capacity of the battery. Therefore, the application of large-capacity batteries is born. Moreover, large-capacity batteries can be applied not only to the automotive industry, but also to energy storage, electric power and other fields. [0003] Please refer to figure 1 , is a schematic diagram of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05C1/06B05C11/10B05D3/02H01M10/058H01M4/139
CPCB05C1/06B05C11/10B05D3/02B05D3/0254H01M4/139H01M10/058Y02E60/10Y02P70/50
Inventor 程建聪
Owner 程建聪
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