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Pole piece coating and feeding device and coating and feeding method

A coating and pole piece technology, applied in the field of pole piece coating and feeding device, can solve the problems such as difficult control of slurry composition and viscosity, complex automatic feeding machine device, easy influence on pole piece quality, etc., and achieve improvement Pole piece qualified rate, simple structure and low cost

Active Publication Date: 2021-02-05
WANXIANG 123 CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problems in the prior art that the slurry composition and viscosity are difficult to control, easily affect the quality of the pole piece, and easily produce toxic and harmful substances to harm the human body; the automatic feeding machine device is complicated, the operation is cumbersome, and the cost is high. Provide a pole piece coating and feeding device and a coating and feeding method, which are simple in structure, convenient in operation, and low in cost, reduce the damage to the human body caused by the volatilization of organic solvents in the slurry, monitor and control the viscosity of the slurry in real time, and control the The speed of the material is monitored to monitor the quality of the slurry, thereby improving the efficiency and pass rate of the pole piece coating

Method used

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  • Pole piece coating and feeding device and coating and feeding method
  • Pole piece coating and feeding device and coating and feeding method
  • Pole piece coating and feeding device and coating and feeding method

Examples

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Effect test

Embodiment 1

[0037] Such as figure 1 , figure 2In the shown embodiment 1, a pole piece coating and feeding device includes a storage device 1 , a stirring device 2 , a viscosity monitoring device 3 and an electric elevator 6 . The material storage device 1 is fixed on the electric elevator 6, the material storage device 1 includes a material storage tank 11 and an isolation cover 12, the side of the material storage tank 11 is connected with a discharge pipe 4, and the discharge pipe 4 is provided with a discharge valve 41, the storage A ring-shaped rubber strip 111 is provided outside the top of the bucket wall top of the barrel 11. The outer surface of the rubber strip 111 is an outwardly protruding arc surface. The outer side of the bottom surface of the isolation cover 12 is provided with a ring-shaped claw 121. The bottom of the claw 121 is wide. The top end is narrow, the inner surface of the claw 121 is attached to the outer surface of the rubber strip 111 , and the isolation cove...

Embodiment 2

[0044] Such as figure 1 , image 3 In the shown embodiment 2, a pole piece coating and feeding device includes a storage device 1 , a stirring device 2 , a viscosity monitoring device 3 and an electric elevator 6 . Its structure is roughly the same as that of Embodiment 1, the difference is that the rubber strip 111 is U-shaped with the opening facing downwards, wrapping the inside, outside and upper side of the top of the barrel wall of the storage tank 11, and the inside surface of the rubber strip 111 is toward the storage tank. The inner side of the material barrel 11 has a protruding arc surface, the outer side is an arc surface protruding toward the outside of the material storage barrel 11, and the upper end surface is a plane. The outer side of the bottom surface of the isolation cover 12 is provided with a circle of opening downward annular draw-in groove 122, the bottom end of the draw-in groove 122 groove wall is wide, the top is narrow, the inner surface of the gr...

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Abstract

A pole piece coating and feeding device comprises a storage device, a stirring device and a viscosity monitoring device, wherein the storage device adopts a closed box body and is connected with the stirring device, a discharge pipe is arranged on the storage device, a discharge valve is arranged on the discharge pipe, the stirring device is driven by a motor, and the viscosity monitoring device is connected with the motor and the discharge valve. The pole piece coating and feeding device has the following beneficial effects: (1) the quality of slurry is ensured by arranging the closed storagedevice, so that the quality of a pole piece is ensured; (2) the viscosity of the slurry is monitored in real time by arranging the viscosity monitoring device, so that the pole piece yield is improved; (3) the stirring device ensures the uniformity of the viscosity of the slurry; (4) a guide strip is arranged to further ensure sufficient stirring; (5) bubbles are prevented from being generated; (6) an isolation cover is convenient to assemble and disassemble and high in sealing performance; and (7) the structure is simple, the assembly is fast, and the cost is low.

Description

technical field [0001] The invention relates to the technical field of lithium battery manufacturing, in particular to a pole piece coating and feeding device. Background technique [0002] Coating is a very important link in determining the quality of lithium-ion battery pole pieces. Existing pole piece coating and feeding methods mainly include two methods: manual feeding and automatic feeding. Manual feeding is the commonly used method at present, that is, after the material is discharged, the method of manual feeding and coating is carried out, the slurry is transferred to the storage tank, and then the material is taken from the tank with a spoon and added to the coating machine trough. Coating in the center can monitor the quality problems of coated pole pieces at any time. The disadvantage of the existing manual feeding is that: the slurry is exposed to the open system, and water absorption may occur, resulting in high humidity and powder drop of the pole pieces; so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05C11/10B01F7/18
CPCB05C11/10B01F27/806B01F35/2136B01F27/90
Inventor 李娟汪仕华彭波许梦清
Owner WANXIANG 123 CO LTD
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