Coating and drying method for pole belts, pole piece preparation method and pole piece preparation system

A preparation system and coating technology, applied in the field of electrodes, can solve the problems of low efficiency, lamination problems, automation difficulties, etc., and achieve the effect of improving efficiency

Inactive Publication Date: 2016-04-20
CHINA AUTOMOTIVE BATTERY RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, there are the following disadvantages: ① many processes, many personnel involved, and difficult automation, which have a great impact on the consistency of products, and the consistency of lithium-ion battery products is extremely important; ② non-stop winding and unwinding, resulting in extreme After the film is completed, there is a certain warpage, which has a certain impact on product performance and has caused certain troubles to the subsequent lamination; ③The non-stop winding and unwinding prolongs the logistics line of the production line, resulting in logistics and The labor cost is high, which has a great impact on the current cost-sensitive lithium-ion power battery
In this way, the preparation time of the pole piece is longer, and the efficiency of the production process is not high.

Method used

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  • Coating and drying method for pole belts, pole piece preparation method and pole piece preparation system
  • Coating and drying method for pole belts, pole piece preparation method and pole piece preparation system
  • Coating and drying method for pole belts, pole piece preparation method and pole piece preparation system

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Embodiment 1

[0032] refer to Figure 1 to Figure 5 , in this embodiment, the pole piece preparation system includes at least one set of coating and drying devices, and each coating and drying device includes a tension control and deviation correction module, a double-sided coating module, and at least one suspension oven arranged in sequence , and the roll-pressed tension belt module. Among them, the tension control correction module is used to correct the deviation and tension control of the pole belt, the double-sided coating module is used to coat the slurry on both sides of the pole belt simultaneously, and the suspension oven is used to simultaneously coat both sides of the pole belt. Drying is carried out, and the roller-pressed tension belt module is used to provide traction for the pole belt. The tension control correction module, the roller pressure belt guide module and the suspension oven jointly control the suspension of the pole belt through the suspension oven. In other wor...

Embodiment 2

[0050] refer to Figure 6 , in the second embodiment, the difference from the first embodiment above is that the rolling device 5 is arranged on the feeding side of the last coating and drying device (the third coating and drying device 4) and the tableting device 6 is arranged on the discharge side of the last coating and drying device (the third coating and drying device 4).

[0051] The process of preparing the pole piece using the pole piece preparation system of the present embodiment is described as follows:

[0052] S1. Put the pole belt into the unwinding device 1;

[0053] S2, the pole belt passes through the double-sided coating module 22 and the suspension oven 23 in the first coating and drying device 2, and the double-sided coating module 32 and the suspension oven 33 in the second coating and drying device 3 , forming two coating layers;

[0054] S3, the pole strip that has formed two layers of paint layers enters the rolling device 5 for rolling;

[0055] S4...

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Abstract

The invention relates to the electrode field, in particular to a coating and drying method for pole belts, a pole piece preparation method and a pole piece preparation system. The coating and drying method comprises the steps that the pole belts are conveyed in a tension-controllable mode, the two surfaces of the pole belts are coated with slurry simultaneously in the conveying process and then are dried simultaneously in a suspension type drying oven, and the tension of the pole belts and the wind force in the suspension type drying oven are controlled together so that the pole belts can penetrate through the suspension type drying oven in a suspension mode. The coating and drying step in the pole piece preparation method adopts the coating and drying method. The pole piece preparation system comprises a coating and drying device, and the coating and drying device comprises a tension control correction module, a double-surface coating module, the suspension type drying oven and a roll-in type tension conduction band module, wherein the tension control correction module, the roll-in type tension conduction band module and the suspension type drying oven jointly control the pole belts to penetrate through the suspension type drying oven in a suspension mode. The production efficiency of the coating and drying method, the pole piece preparation method and the pole piece preparation system is high.

Description

technical field [0001] The present invention relates to the field of electrodes, in particular to a coating and drying method for pole strips, a pole piece preparation method and a pole piece preparation system, and more particularly to a coating and drying method for pole strips used for making lithium-ion battery pole pieces. A dry method, a lithium ion battery pole piece preparation method and a lithium ion battery pole piece preparation system. Background technique [0002] At present, general lithium-ion battery pole pieces need to go through four processes of coating, rolling, slitting, and sheet production. In order to improve performance, the production of high-performance power lithium-ion battery pole pieces often requires multi-layer coating, and then rolls Pressing, cutting, sheeting and other processes. At present, each process is completed by using separate equipment: coating machine, roller press, slitting machine, and sheet making machine. Between each proce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D3/02B05C9/04B05C13/02B05C9/14H01M4/139
CPCB05C9/04B05C9/14B05C13/02B05D3/0254H01M4/139Y02E60/10
Inventor 高哲峰王琳黄倩杨容王耀马小利
Owner CHINA AUTOMOTIVE BATTERY RES INST CO LTD
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