Coating die head for single or multiple lithium battery pole pieces

A lithium battery and die technology, which is used in battery electrodes, electrode manufacturing, and devices for coating liquid on surfaces, etc., can solve the problems of low precision, large equipment wear, waste of production materials, etc., to improve product quality, The effect of improving coating accuracy and improving production efficiency

Pending Publication Date: 2019-10-08
NINGBO VEKEN BATTERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Providing a new type of die head gasket to realize the coating of various types of lithium battery pole pieces is a commonly used improvement method at present, but it needs to be shut down to replace the corresponding size gasket, and can only be reproduced after readjustment. This operation It is a conventional method in the industry at present. During the period, it is necessary to open the mold cavity, clean, install, calibrate, debug, and test the machine, which not only delays production efficiency, wastes production materials, but also causes equipment wear, low precision, and poor product consistency.

Method used

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  • Coating die head for single or multiple lithium battery pole pieces
  • Coating die head for single or multiple lithium battery pole pieces
  • Coating die head for single or multiple lithium battery pole pieces

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Such as figure 1 Shown is the coating die for a single set of lithium battery pole pieces in this embodiment, including an upper die 1 and a lower die 2, the lower die 2 is provided with a feed port 21 and is provided with a coating for containing the coating slurry The trough 22 of the material, the feed port 21 communicates with the trough 22, the upper die head 1 and the lower die head 2 surround the mold cavity for coating the slurry, and the front sides of the upper die head 1 and the lower die head 2 are matched. Die mouth 3 is formed. Specifically, the rear side and both sides of the upper die head 1 and the lower die head 2 are connected by studs, and a gasket 23 is arranged at the connection. As shown in Figure 2, the gasket 23 has a certain thickness and is placed on the lower die head. 2 forms the steps on the rear side and both sides, therefore, the rear side and both sides of the upper die head 1 and the lower die head 2 are sealed and connected through th...

Embodiment 2

[0042] This embodiment provides a kind of coating die head that is used for single group lithium battery pole piece, and its structure is similar to embodiment 1, comprises upper die head 1 and lower die head 2, and lower die head 2 is provided with feeding port 21 And be provided with the trough 22 that is used to accommodate coating slurry, feed inlet 21 communicates with trough 22, upper die head 1 and lower die head 2 surround the mold cavity of coating slurry, upper die head 1 and lower die head The front side of the head 2 cooperatively forms a die mouth 3 . The difference is that the connection between the upper die head 1 and the lower die head 2 is not provided with gaskets, such as Figure 4 As shown, the upper die head 1 or the lower die head 2 forms a connection platform 28 at the joint surface, the connection platform 28 is integrally formed with the upper / lower die head, and is arranged at the junction of the rear side and both sides, and is provided with screw ...

Embodiment 3

[0044] Such as Figure 5 and Figure 6 Shown is a preferred embodiment of the coating die for single or multiple sets of lithium battery pole pieces, including an upper die 1 and a lower die 2, and the lower die 2 is provided with a feed port 21 and is used to accommodate The trough 22 for coating the slurry, the feed port 21 is externally connected to the feed pipe and communicated with the trough 22, the upper die head 1 and the lower die head 2 form a mold cavity for coating the slurry, the upper die head 1 and the lower die head The front side of the head 2 cooperatively forms a die mouth 3 . Specifically, the rear side and both sides of the upper die head 1 and the lower die head 2 are connected by studs, and a gasket 23 or an integrally formed connecting platform 28 is arranged on the rear side and both sides of the joint surface. A slit is formed on the front side. Therefore, the rear side and both sides of the upper die head 1 and the lower die head 2 are sealed to ...

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Abstract

The invention discloses a coating die head for single or multiple lithium battery pole pieces. The coating die head comprises an upper die head and a lower die head. A feed inlet is formed in the upper die head or the lower die head, and a trough for accommodating coating slurry is formed in the lower die head, the feed inlet communicates to the trough, and the front sides of the upper die head and the lower die head are matched to form a die nozzle. The upper die head and the lower die head define a die cavity for accommodating the coating slurry, and the front side of the die cavity is isolated by the upper die head and the lower die head to form a silt of the die nozzle; the trough stretches along the length direction of the lower die head, a plurality of adjusting slide blocks are distributed vertical to the coating direction between the upper die head and the lower die head, the adjusting slide blocks slide along the surface of the lower die head, and the adjusting slide blocks are matched on the side of the die nozzle to form a discharge port with variable width for coating slurry. The dimension of the die cavity is adjusted by controlling the slide blocks, so that the coating width of the coating die is adjusted online. The die cavity is not opened in the adjusting process, so that the production efficiency is improved and consistent production of products is facilitated.

Description

technical field [0001] The invention relates to the field of manufacturing equipment for lithium battery pole pieces, in particular to a coating die for single or multiple sets of lithium battery pole pieces. Background technique [0002] With the rapid development of new energy industries such as electric vehicles and energy storage batteries around the world. As a recognized ideal energy storage component, power lithium batteries have also received high attention. The coating machine is the key process equipment for the production of power lithium battery pole pieces. At present, the lithium battery pole piece coating process mainly includes scraper type, roller coating transfer type and slit extrusion type. Among them, the process of extrusion coating is that the coating slurry is extruded along the gap of the coating mold under a certain pressure and a certain flow rate and transferred to the substrate. The extrusion coating machine has simple structure, compact equipm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05C5/02H01M4/04H01M4/139
CPCB05C5/0262B05C5/0266H01M4/0402H01M4/139Y02E60/10
Inventor 曹国瑞王树增李军涛田鑫陈磊磊刘运斌
Owner NINGBO VEKEN BATTERY
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