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A double-sided coating device for lithium battery materials

A lithium battery material, double-sided coating technology, applied to the device and coating of the surface coating liquid, can solve the problems of low efficiency, manual addition, inconvenient operation, etc., and achieve the effect of improving coating efficiency

Active Publication Date: 2021-03-12
天科新能源有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Current collector refers to the structure or parts that collect current. In lithium-ion batteries, it mainly refers to metal foils, such as copper foil and aluminum foil. Output, when producing lithium batteries, mix the positive and negative electrode materials evenly, and stir them into a slurry. The stirred slurry is evenly coated on the current collector, the positive electrode is coated on the aluminum foil, and the negative electrode is coated on the copper foil. The current current collector The coating efficiency of the surface coating device is low, and it is necessary to manually add positive and negative electrode material slurries in the coating composition, which is extremely inconvenient to operate. Therefore, a double-sided coating device for lithium battery materials is now provided to solve the above technical problems

Method used

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  • A double-sided coating device for lithium battery materials
  • A double-sided coating device for lithium battery materials
  • A double-sided coating device for lithium battery materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] see Figure 1-3 , a double-sided coating device for lithium battery materials, including a coating chamber 1, a lifting frame 16 is connected to the coating chamber 1 through the transmission of a lifting mechanism, and there are two symmetrically arranged on the side wall of the coating chamber 1 for clamping sets. The clamping mechanism for the fluid 31 clamps the current collector 31 through the provided clamping mechanism, which facilitates the stability of the subsequent coating operation.

[0022] The bottom of the lifting frame 16 is rotatably provided with a conveyor belt 15, and the outer surface of the conveyor belt 15 is evenly fixed with several coating brushes 24, and the coating brushes 24 that are set rotate with the rotation of the conveyor belt 15. The positive and negative electrode material slurries are used to coat the surface of the current collector 31 .

[0023] A compression cylinder 17 is fixedly installed in the lifting frame 16, and a one-way...

Embodiment 2

[0026] In order to make the coating brush 24 contact with the surface of the current collector 31 and improve the quality of coating, on the basis of Embodiment 1, in addition, the lifting mechanism includes a biaxial motor 3 fixed in the coating chamber 1. The two output shafts of the shaft motor 3 are respectively coaxially fixed with a threaded rod I2 and a threaded rod II5 with opposite screw directions, and the threaded connection sleeves of the threaded rod I2 and the threaded rod II5 are provided with a threaded sleeve block 4, and a threaded sleeve block 4 A connecting rod 6 is hinged between the lifting frame 16.

[0027] The threaded rod I2 and the threaded rod II5 can be driven and rotated by the double-axis motor 3 at the same time, and the threaded rod I2 and the threaded rod II5 drive the threaded block 4 on it to move in opposite directions, and then the connecting rod 6 drives the lifting frame 16 to move downward , until the coating brush 24 is just in contact...

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Abstract

The invention discloses a double-sided coating device for lithium battery materials, which relates to the technical field of lithium batteries, and includes a coating room. The coating room is connected with a lifting frame through the transmission of a lifting mechanism. For the clamping mechanism for clamping the current collector, the bottom of the lifting frame is rotatably equipped with a conveyor belt, the lower end of the discharge pipe 1 is installed with a nozzle above the coating brush, and the rotating type of the lifting frame is equipped with a runner, and the front of the runner is hinged eccentrically. There is a transmission rod, and the lower end of the transmission rod is hinged on the piston rod; the invention realizes the effect of the coating brush on the surface of the current collector to uniformly coat the positive and negative electrode material slurry through the conveying and rotation of the conveyor belt. The positive and negative electrode material slurry is sprayed by brush to replenish in time to ensure the full coating effect of the coating brush on the current collector. Cloth effect, greatly improving the coating efficiency.

Description

technical field [0001] The invention relates to the technical field of lithium batteries, in particular to a double-sided coating device for lithium battery materials. Background technique [0002] "Lithium battery" is a type of battery that uses lithium metal or lithium alloy as the negative electrode material and uses a non-aqueous electrolyte solution. Due to the very active chemical properties of lithium metal, the processing, storage, and use of lithium metal have very high environmental requirements. . With the development of science and technology, lithium batteries have become the mainstream now. Lithium batteries can be roughly divided into two categories: lithium metal batteries and lithium ion batteries. Lithium ion batteries do not contain metallic lithium and are rechargeable. [0003] Current collector refers to the structure or parts that collect current. In lithium-ion batteries, it mainly refers to metal foils, such as copper foil and aluminum foil. Outpu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05C1/06B05C9/14B05C11/10B05C13/02
Inventor 李文康张伟
Owner 天科新能源有限责任公司