CN108321351B - Device for improving fluidity of lithium ion battery slurry - Google Patents

Abstract

The invention discloses a device for improving the fluidity of lithium ion battery slurry, wherein a solvent feeding pipe is horizontally arranged, a micro-concave pipe is rotatably sleeved outside the solvent feeding pipe, the inner wall of the micro-concave pipe is spaced from the outer wall of the solvent feeding pipe by a preset distance, the outer wall of the micro-concave pipe is provided with a plurality of bulges, the plurality of bulges form a plurality of groove structures on the surface of the micro-concave pipe, a solvent wiping pipe is sleeved outside the micro-concave pipe, the micro-concave pipe is communicated with the solvent feeding pipe through a first discharging hole, and the solvent wiping pipe is communicated with the inside of the micro-concave pipe through a second discharging hole. Through the mobile device of improvement lithium ion battery thick liquids of above-mentioned optimal design, the homogeneity of fully considering solvent to clean, the solvent inlet pipe is guaranteed to be steady even to the solvent supply volume of little concave pipe, and the homodisperse of solvent is guaranteed in the protruding design of little concave pipe outer wall, and the liquid material is deposited in the adoption of solvent cleaning pipe, guarantees the even cleaning of solvent, saves the solvent quantity simultaneously.

Description

A device for improving the fluidity of lithium-ion battery slurry

technical field

The invention relates to the technical field of lithium ion batteries, in particular to a device for improving the fluidity of lithium ion battery slurry.

Background technique

At present, the environment-friendly new energy industry is booming rapidly. Lithium-ion batteries are more and more used in daily life due to their high safety, long cycle life, and environmental friendliness. At present, the main application of lithium-ion batteries The field is in 3C electronic products and new energy automobile industry. In recent years, the production capacity and shipments of new energy vehicles have increased by several times. For new energy vehicles, people are mainly concerned about their cruising range, which requires high energy density of single cells and modules to achieve long cruising range. Target.

At present, the energy density improvement method is mainly achieved by increasing the energy density of the monomer and reducing the weight of the module. For the method of improving the energy density of the monomer, from the aspects of material system selection, cell structure design, etc., in order to ensure a certain mechanical and physical strength , The choice of lighter materials is more cautious, and the main core technology to improve the energy density of a single cell is the improvement of the performance of the material chemical system. The material system mainly includes four main materials: positive electrode material, negative electrode material, diaphragm, and electrolyte. Among them, the gram capacity and compaction density improvement of positive and negative electrode materials are the key items. High-capacity cathode materials, the current gradual application of high-nickel ternary materials and the gradual increase in the gram capacity of lithium iron phosphate materials, with the improvement of the gram capacity of cathode materials, their processing performance, especially in terms of water absorption, have higher and higher requirements for the process environment ; High-capacity and high-compression anode materials, the main technology is to improve the degree of secondary granulation and graphitization, but the drawbacks brought by this technical improvement will be due to the adhesion of the secondary particles. Affecting the coating uniformity, for the processing problems caused by the intrinsic characteristics of this material, in addition to improving the material itself, the development of its appropriate process is also a key point to realize the application value of the material.

SUMMARY OF THE INVENTION

In order to solve the technical problems existing in the background art, the present invention proposes a device for improving the fluidity of lithium ion battery slurry.

A device for improving the fluidity of lithium ion battery slurry proposed by the present invention includes: a mounting frame and a cloth assembly;

The cloth component is installed on the mounting frame, and the cloth component includes a solvent feeding tube, a micro-concave tube, and a solvent wiping tube. The solvent feeding tube is set horizontally. The outer wall of the solvent feed pipe is spaced by a preset distance, the outer wall of the micro-concave pipe is provided with a plurality of protrusions, and the plurality of protrusions form a plurality of groove structures on the surface of the micro-concave pipe. The tube is made of porous liquid storage material;

One end of the solvent feed pipe is provided with a feed port, the surface of the solvent feed pipe is provided with a first discharge hole, the micro-concave pipe is communicated with the solvent feed pipe through the first discharge hole, and the side wall of the micro-concave pipe is provided with a first discharge hole. Two discharge holes, the solvent wiping tube communicates with the inside of the micro-concave tube through the second discharge hole.

Preferably, the feed port of the solvent feed pipe is provided with a flow control valve.

Preferably, baffles are respectively provided at both ends of the microconcave tube, and the baffles are fixedly connected to the microconcave tube.

Preferably, a plurality of first discharge holes are provided on the surface of the solvent feed pipe, and the plurality of first discharge holes are evenly distributed on the surface of the solvent feed pipe.

Preferably, the surface of the micro-concave tube is provided with a plurality of second discharge holes, and the plurality of second discharge holes are evenly distributed on the surface of the micro-concave tube.

Preferably, the second discharge hole is located in the groove.

Preferably, one end of the protrusion away from the solvent feeding pipe abuts against the inner wall of the solvent wiping pipe.

In the present invention, in the proposed device for improving the fluidity of lithium-ion battery slurry, the solvent feeding pipe is horizontally arranged, the micro-concave pipe is rotatably sleeved outside the solvent feeding pipe, and the inner wall of the micro-concave pipe is spaced from the outer wall of the solvent feeding pipe With a preset distance, the outer wall of the micro-concave tube is provided with a plurality of protrusions, and the plurality of protrusions form a plurality of groove structures on the surface of the micro-concave tube. The solvent wiping tube communicates with the inside of the micro concave tube through the second discharge hole. Through the above-mentioned optimized design of the device for improving the fluidity of lithium-ion battery slurry, the uniformity of solvent wiping is fully considered. The solvent feeding pipe ensures a stable and uniform supply of solvent to the micro-concave tube, and the convex design of the outer wall of the micro-concave tube ensures that the solvent is supplied. The solvent wiper tube adopts the liquid storage material to ensure the uniform wipe of the solvent and save the solvent consumption at the same time.

Description of drawings

FIG. 1 is a schematic structural diagram of a device for improving the fluidity of a lithium-ion battery slurry proposed by the present invention.

Detailed ways

As shown in FIG. 1 , FIG. 1 is a schematic structural diagram of a device for improving the fluidity of a lithium ion battery slurry proposed by the present invention.

Referring to FIG. 1 , a device for improving the fluidity of lithium-ion battery slurry proposed by the present invention includes: a mounting frame 6 and a cloth assembly;

The cloth assembly is installed on the mounting frame 6. The cloth assembly includes a solvent feeding pipe 1, a micro-concave pipe 2, and a solvent wiping pipe 3. The solvent feeding pipe 1 is set horizontally, and the micro-concave pipe 2 is rotatably sleeved on the solvent feeding pipe 1. The outer wall of the micro-concave tube 2 and the outer wall of the solvent feeding tube 1 are separated by a preset distance. The outer wall of the micro-concave tube 2 is provided with a plurality of protrusions, and the plurality of protrusions form a plurality of groove structures on the surface of the micro-concave tube 2. The solvent wipes The tube 3 is sleeved on the outside of the micro-concave tube 2, and the solvent wiping tube 3 is made of porous liquid storage material;

One end of the solvent feed pipe 1 is provided with a feed port, the surface of the solvent feed pipe 1 is provided with a first discharge hole, the micro-concave pipe 2 is communicated with the solvent feed pipe 1 through the first discharge hole, and the micro-concave pipe 2 The side wall is provided with a second discharge hole, and the solvent wiping pipe 3 communicates with the inside of the micro-concave pipe 2 through the second discharge hole.

In the specific working process of the device for improving the fluidity of the lithium-ion battery slurry in this embodiment, firstly, the material is fed to the solvent feeding pipe according to the slurry state and coating speed. The solvent in the material pipe enters the micro-concave pipe through the first discharge hole, drives the micro-concave pipe to rotate, and flows to the outside of the micro-concave pipe through the second discharge port. The solvent is wiped on the tube to achieve quantitative and uniform coating of the solvent on the surface of the foil.

In this embodiment, in the proposed device for improving the fluidity of lithium-ion battery slurry, the solvent feeding pipe is set horizontally, the micro-concave pipe is rotatably sleeved outside the solvent feeding pipe, and the inner wall of the micro-concave pipe is connected to the solvent feeding pipe. The outer wall is separated by a preset distance, the outer wall of the micro-concave tube is provided with a plurality of protrusions, and the plurality of protrusions form a plurality of groove structures on the surface of the micro-concave tube. The material pipe is communicated with the first discharge hole, and the solvent wiping pipe is communicated with the inside of the micro concave pipe through the second discharge hole. Through the above-mentioned optimized design of the device for improving the fluidity of lithium-ion battery slurry, the uniformity of solvent wiping is fully considered. The solvent feeding pipe ensures a stable and uniform supply of solvent to the micro-concave tube, and the convex design of the outer wall of the micro-concave tube ensures that the solvent is supplied. The solvent wiper tube adopts the liquid storage material to ensure the uniform wipe of the solvent and save the solvent consumption at the same time.

In a specific embodiment, the feed port of the solvent feed pipe 1 is provided with a flow control valve 4, and the feed flow rate and flow rate are adjusted according to the slurry state and coating speed.

In other specific embodiments, baffles 5 are respectively provided at both ends of the micro-concave tube 2, and the baffles 5 are fixedly connected to the micro-concave tube 2. When the solvent flows in the pipe, a part of the solvent can flow back through the baffle, saving the amount of solvent.

In the specific design of the discharge hole, the surface of the solvent feed pipe 1 is provided with a plurality of first discharge holes, the plurality of first discharge holes are evenly distributed on the surface of the solvent feed pipe 1, and the surface of the micro-concave pipe 2 is provided with A plurality of second discharge holes, and the plurality of second discharge holes are evenly distributed on the surface of the micro-concave tube 2 .

In a further specific embodiment, the second discharge hole is located in the groove, so that the material is discharged through the second discharge hole.

In order to ensure that the cloth is uniform in all directions, in other specific implementations, one end of the protrusion away from the solvent feeding pipe 1 abuts against the inner wall of the solvent wiping pipe 3 .

The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited to this. The equivalent replacement or change of the inventive concept thereof shall be included within the protection scope of the present invention.

Claims (7)

1. A device for improving the fluidity of lithium-ion battery slurry, characterized in that it comprises: a mounting frame (6) and a cloth assembly; The cloth assembly is installed on the mounting frame (6), and the cloth assembly includes a solvent feeding pipe (1), a micro-concave pipe (2), a solvent wiping pipe (3), the solvent feeding pipe (1) is arranged horizontally, and the micro-concave pipe ( 2) the rotary sleeve is set on the outside of the solvent feeding pipe (1) and the inner wall of the micro-concave pipe (2) is spaced a preset distance from the outer wall of the solvent feeding pipe (1), and the outer wall of the micro-concave pipe (2) is provided with a plurality of protrusions, The plurality of protrusions form a plurality of groove structures on the surface of the micro-concave tube (2), the solvent wiping tube (3) is sleeved on the outside of the micro-concave tube (2), and the solvent wiping tube (3) is made of a porous liquid storage material; One end of the solvent feeding pipe (1) is provided with a feeding port, the surface of the solvent feeding pipe (1) is provided with a first discharging hole, and the micro-concave pipe (2) and the solvent feeding pipe (1) pass through the first outlet. The material holes are connected, the side wall of the micro-concave pipe (2) is provided with a second discharge hole, and the solvent wiping pipe (3) is communicated with the inside of the micro-concave pipe (2) through the second discharge hole. 2 . The device for improving the fluidity of lithium-ion battery slurry according to claim 1 , wherein a flow control valve ( 4 ) is provided at the feed port of the solvent feed pipe ( 1 ). 3 . 3. The device for improving the fluidity of lithium-ion battery slurry according to claim 1, characterized in that baffles (5) are respectively provided at both ends of the micro-concave tube (2), and the baffle (5) and the micro-concave tube are respectively provided with baffles (5). (2) Fixed connection. 4. The device for improving the fluidity of lithium-ion battery slurry according to claim 1, wherein a plurality of first discharge holes are provided on the surface of the solvent feed pipe (1), and the plurality of first discharge holes are located in the The surface of the solvent feed pipe (1) is evenly distributed. 5. The device for improving the fluidity of lithium-ion battery slurry according to claim 1, wherein the sidewall of the micro-concave tube (2) is provided with a plurality of second discharge holes, and the plurality of second discharge holes are located in the The sidewalls of the micro-concave tubes (2) are evenly distributed. 6 . The device for improving the fluidity of lithium ion battery slurry according to claim 1 , wherein the second discharge hole is located in the groove. 7 . 7. The device for improving the fluidity of lithium-ion battery slurry according to claim 1, wherein one end of the protrusion away from the solvent feeding pipe (1) abuts against the inner wall of the solvent wiping pipe (3).

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