A liquid level adjustment mechanism and transfer coating machine

A liquid level adjustment and baffle adjustment technology, which is applied to the surface coating device, coating, electrode collector coating, etc., can solve the problems of pressure change, cumbersome operation, and poor fluidity, and achieve The surface density of the pole piece is stable, the surface density of the pole piece is guaranteed, and the effect of improving product quality

Active Publication Date: 2021-11-12
SUZHOU QINGTAO NEW ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing transfer coating machine still has the following problems: when the slurry fluidity is getting worse near the end of the coating, it is necessary to manually fill the chute baffle in the trough of the coating machine, and place the chute baffle On the tank wall of the trough, to increase the height of the liquid level of the tailings, the operation is cumbersome; The height of the material liquid level is unstable, causing the pressure on the joint surface of the scraper roller and the coating roller to change all the time, which eventually leads to unstable surface density of the coated pole piece, which affects product quality

Method used

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  • A liquid level adjustment mechanism and transfer coating machine
  • A liquid level adjustment mechanism and transfer coating machine
  • A liquid level adjustment mechanism and transfer coating machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] This embodiment provides a liquid level adjustment mechanism, such as figure 1 As shown, the liquid level adjustment mechanism mainly includes a trough 1 and an adjusting baffle 2, and the adjusting baffle 2 is rotatably arranged in the trough 1 to divide the trough 1 into a first trough 11 and a second trough with a variable volume. 12. The first trough 11 is close to the joint surface of the scraper roller 5 and the coating roller 6. The slurry contained in the first trough 11 is used to directly coat the battery current collector, and the slurry contained in the second trough 12 is The material is used to replenish the first material tank 11 with slurry, and the adjusting baffle 2 is configured to be able to adjust the liquid level in the first material tank 11 so as to maintain it at a preset liquid level.

[0035] The liquid level adjustment mechanism provided in this embodiment realizes the adjustment of the liquid level height of the slurry in the first material ...

Embodiment 2

[0045] This embodiment provides a liquid level adjustment mechanism, which differs from the liquid level adjustment mechanism in Embodiment 1 in that:

[0046] Such as figure 2 As shown, the regulating baffle 2 in this embodiment also includes a one-way valve assembly 23 arranged on the body 21, and the one-way valve assembly 23 is configured to be able to conduct or block the first material tank 11 and the second material tank 12 . In this embodiment, the battery slurry can flow between the first tank 11 and the second tank 12 through the one-way valve assembly 23 .

[0047] Specifically, the one-way valve assembly 23 includes a valve plate 231 and a flow hole 232. The flow hole 232 is opened on the body 21. The valve plate 231 is slidably connected to the body 21 and can open or block the flow hole 232 to realize the flow of the slurry. flow or block. The shape of the valve plate 231 and the number of flow holes 232 need to be designed according to actual needs. Optional...

Embodiment 3

[0055] This embodiment provides a transfer coating machine, which includes a scraper roller 5, a coating roller 6, and the liquid level adjustment mechanism of the first or second embodiment above. The scraper roller 5 and the coating roller 6 are connected on the frame, and the liquid level adjustment mechanism is arranged at the joint surface of the scraper roller 5 and the coating roller 6, and the rotation directions of the scraper roller 5 and the coating roller 6 are opposite, and the coating roller 6 The rotation makes the slurry in the trough 1 stick to the coating roller 6, scraped by the scraper roller 5, and then coated on the battery current collector to realize the coating of the battery current collector. The transfer type coating machine can improve the coating effect, and the surface density of the prepared electrode sheet is stable, and the product quality is high.

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Abstract

The invention belongs to the technical field of lithium ion batteries, and specifically discloses a liquid level adjustment mechanism and a transfer coater. The liquid level adjustment mechanism includes a material trough; an adjustment baffle is movably arranged in the material trough to divide the material trough into a variable volume first material trough and a second material trough, and the first material trough is close to the combination of the scraper roller and the coating roller The adjusting baffle is configured to be able to adjust the liquid level in the first trough to maintain the liquid level at a preset liquid level. The transfer coater includes the above-mentioned liquid level adjustment mechanism. The liquid level adjustment mechanism and transfer coating machine provided by the present invention can realize the adjustment of the liquid level height of the slurry in the first material tank during the coating process, and ensure that the liquid level height is kept constant at the preset liquid level height during the coating process. , so that the pressure at the joint surface of the scraper roll and the coating roll is kept constant, and the coating effect is improved, thereby ensuring the stability of the surface density of the pole piece and improving the product quality.

Description

technical field [0001] The invention relates to the technical field of lithium ion batteries, in particular to a liquid level adjustment mechanism and a transfer coating machine. Background technique [0002] With the continuous advancement of lithium-ion battery preparation technology, people have higher and higher requirements for lithium-ion performance. The process is an important process in the production process of lithium-ion batteries, and it is also a key process that affects the quality of lithium-ion batteries. This process requires uniform coating of lithium-ion battery slurry on lithium-ion battery current collectors, and its coating uniformity and stability Sex is especially important. [0003] Compared with the extrusion coating machine, the transfer coating machine does not have high requirements on the viscosity of the slurry, the coating parameters are easy to adjust, and there is no blocking problem, so it is favored by people. However, the existing tran...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05C1/08H01M4/04
CPCB05C1/0817B05C1/0826B05C1/086B05C1/0873H01M4/0404Y02E60/10
Inventor 李峥冯玉川何泓材杨帆
Owner SUZHOU QINGTAO NEW ENERGY TECH CO LTD
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