A battery pole piece coating system and method

A technology of battery pole piece and coating method, which is applied in battery electrodes, electrode collector coating, electrode manufacturing, etc., can solve the problems of unfavorable power battery mass production, high material cost and labor cost, and powder scrapping, etc. , to achieve the effect of saving pole piece cutting process, significant economic and social benefits, and saving process

Inactive Publication Date: 2020-01-07
SHENZHEN SHENG ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the power battery manufacturing process, no matter which method is used for film production or assembly, the traditional coating method will lead to either high waste of powder during film production, or very low coating efficiency, high material costs and labor costs, which is not conducive to power battery batches chemical production

Method used

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  • A battery pole piece coating system and method
  • A battery pole piece coating system and method
  • A battery pole piece coating system and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Embodiment 1: as Figure 1~5 , a battery pole piece coating system, comprising a coating head 4, an oven 3 and a winding device 1; the winding device has 3 independent winding modules;

[0049] Coater head for coating slurry 6 on the foil strip;

[0050] The foil strip is bonded together by N foil sub-bands through adhesive 2; two adjacent foil sub-bands are spread out in the width direction of the foil strip and partially overlap;

[0051] After the foil strip passes through the oven, the glue loses its cohesive force due to heating, and the three pole pieces are separated and wound up by three independent winding modules of the winding device.

[0052] Glue is adhesive tape.

[0053] The 3 foil sub-tapes have the same width.

[0054] A method for coating a battery pole piece, using the aforementioned battery pole piece coating system for coating.

[0055] The coating steps are as follows:

[0056] Step 1; coating slurry;

[0057] Coating the positive and negativ...

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Abstract

A battery polar plate coating system and method are disclosed. The system includes a coating machine head (4), a drying oven (3) and a winding device (1). The winding device is provided with N independent winding modules, with the N being an integer and not less than 2. The coating machine head is used for coating a foil belt with coating slurry (6). The foil belt is formed by adhering N foil subsidiary bets through an adhesive (2). Adjacent two foil subsidiary bets are expanded at the width direction of the foil belt and are partially overlapped. After the foil belt passes through the drying oven (adhesive force of the adhesive is lost due to heating functions), N polar plates are separated and are respectively wound by the N independent winding modules. The system and the method are easy to implement and the coating efficiency is high.

Description

technical field [0001] The invention relates to a battery electrode sheet coating system and method. Background technique [0002] Since 2009, the state has successively introduced relevant policies on new energy vehicles, paving the way for the industrialization of new energy vehicles. Due to the 10-year industrial planning involved, the power battery industry will usher in long-term development opportunities. At present, lithium-ion power batteries have the advantages of high energy density and small size. The industry generally believes that lithium batteries will become mainstream power batteries. Many manufacturers have transformed into lithium-ion power batteries. For a time, lithium-ion power battery factories have sprung up everywhere. , Lithium-ion power battery development technology is becoming more and more mature. The current primary issue is: how to minimize manufacturing and material costs on the premise of ensuring high-power charging and discharging (fast c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/04H01M4/139
CPCH01M4/0404H01M4/139Y02E60/10
Inventor 于湘勇桑成涛刘恩新
Owner SHENZHEN SHENG ENERGY TECH CO LTD
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