Overflow device for wet lithium ion battery separator extraction equipment

A lithium-ion battery and extraction equipment technology, applied in the field of overflow devices, can solve problems such as restricting the speed-up and cost-reduction of wet-process diaphragm production lines, limiting the solubility of extractants, and hidden dangers of environmental safety and security, so as to reduce the risk of environmental pollution, Save material energy consumption and reduce the effect of back mixing

Pending Publication Date: 2019-07-23
江苏北星新材料科技有限公司 +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, limited by the solubility of the extractant to the white oil, under the premise of ensuring that the film oil is extracted cleanly, the speed of the extraction equipment provided by the current mainstream extraction equipment suppliers is generally below 50m/min, and the recycling amount of the extractant ...

Method used

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  • Overflow device for wet lithium ion battery separator extraction equipment
  • Overflow device for wet lithium ion battery separator extraction equipment
  • Overflow device for wet lithium ion battery separator extraction equipment

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Embodiment Construction

[0023] The content of the present invention will be further elaborated below in conjunction with the embodiments and the accompanying drawings.

[0024] This embodiment provides an overflow device for wet lithium-ion battery diaphragm extraction equipment, such as figure 2 As shown, it includes two parts: a flow guiding device and a flow blocking device. The diversion device part includes the extraction agent overflow pipe (1 in the figure is the inlet, 4 is the outlet), an overflow tank (2 in the figure is the driving side, and 6 is the operation side), and the choke device part includes the overflow tank choke Plate 3, dividing baffle plate 5 in the extraction tank.

[0025] Wherein, the function of the extraction agent overflow pipe (1 and 4 in the figure) is to conduct the extraction agent between two adjacent extraction tanks in an overflow manner. In this embodiment, an overflow port is respectively cut at the inlet and outlet of the driving side of the extraction tan...

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Abstract

The invention relates to an overflow device for wet lithium ion battery separator extraction equipment. The overflow device comprises a flow guiding part and a flow resisting part, wherein the flow guiding part comprises an extraction agent overflow pipe and two overflow tanks; the flow resisting part comprises an overflow tank flow resisting plate and an extraction tank dividing baffle plate; theextraction agent overflow pipe is located on the driving side of an extraction tank and used for communicating extraction agents of two adjacent extraction tanks; the extraction tank dividing baffleplate is located in the middle of the extraction tank; the two overflow tanks are located on the driving side and the operating side of the extraction tank respectively, tightly attached to the wall of the extraction tank and lower than the extraction tank dividing baffle plate by certain distance; the overflow tank flow resisting plate is located in the middle of the overflow tank located on thedriving side. With the adoption of the overflow device, flowing travel of the extraction agent in single extraction tank is substantially increased, backmixing of the extraction agents with differentconcentrations in the front position and the back position in an original tank is reduced, and the extraction efficiency is remarkably improved.

Description

technical field [0001] The invention belongs to the technical field of lithium-ion batteries, and in particular relates to an overflow device of wet-process lithium-ion battery diaphragm extraction equipment. Background technique [0002] Extraction is the core step of the wet lithium-ion battery diaphragm manufacturing process, which has a significant impact on the performance and appearance of the final product, and is one of the key factors affecting capacity utilization and product qualification. The main equipment of the extraction process is the extraction tank (such as figure 1 shown), the extraction tank is usually composed of 6 to 8 independent extraction units, and two layers of rollers are arranged up and down in each extraction unit. The extractant is dissolved and discharged out of the tank with the extractant, and the oil film becomes a pure PE diaphragm. The new extractant is added continuously from the last extraction unit, and the flow of extractant betwee...

Claims

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Application Information

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IPC IPC(8): B01D11/00B01D11/04H01M2/14H01M10/0525H01M50/403
CPCB01D11/00B01D11/0415H01M10/0525B01D2011/002H01M50/403Y02E60/10
Inventor 尹连清刘刚李一汀汪崇贵谢新春曾文杰李磊窦炳阔王显兰高川
Owner 江苏北星新材料科技有限公司
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