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Lithium supplement device for pole piece and lithium supplement method

A pole piece and lithium replenishment technology, applied in battery electrodes, electrical components, circuits, etc., to achieve the effect of improving the consistency of lithium replenishment, improving production efficiency and efficiency, and reducing equipment costs

Pending Publication Date: 2019-02-19
CONTEMPORARY AMPEREX TECH CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problems existing in the prior art, the present invention provides a pole piece lithium replenishing device and a method for not replenishing lithium. The lithium replenishing device has a simple structure, greatly reduces the equipment cost, and completely solves the problem of sticking rollers, Adhesion and other problems, the consistency of lithium supplementation has been greatly improved, and the production efficiency and efficiency have been greatly improved

Method used

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  • Lithium supplement device for pole piece and lithium supplement method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] This embodiment provides a use figure 1 The method for supplementing lithium of the negative electrode pole piece with the shown pole piece lithium supplementing device, the method is:

[0050] The lithium liquid production device will prepare lithium solids into lithium liquid under the heating condition of 100°C, and the lithium liquid will be transported to the lithium liquid storage tank through pipelines, and the pipeline, lithium liquid storage tank and gravure roller will be cleaned before coating the lithium liquid. Keep warm to 100°C, when the lithium liquid is brought into the groove of the gravure roll, cool the gravure roll to 50°C with a dew point of -20°C and a dew point of -5°C, and the negative pole piece passes through The pole piece unwinding assembly is sent to the lithium liquid coating assembly. When the negative pole piece passes through the counter roll composed of a gravure roll and a hot back roll, the gravure roll coats the lithium liquid onto ...

Embodiment 2

[0052] This embodiment provides a use figure 1 The method for supplementing lithium of the negative electrode pole piece with the shown pole piece lithium supplementing device, the method is:

[0053] The lithium liquid production device will prepare lithium solids into lithium liquid under the heating condition of 400°C, and the lithium liquid will be transported to the lithium liquid storage tank through pipelines, and the pipeline, lithium liquid storage tank and gravure roll will be cleaned before coating the lithium liquid. Carry out heat preservation to 400°C, when the lithium liquid is brought into the groove of the gravure roll, cool the gravure roll to 280°C with a dew point of 60°C and a dew point of -65°C. The sheet unwinding assembly is sent to the lithium liquid coating assembly. When the negative pole piece passes through the counter roll composed of a gravure roll and a hot back roll, the gravure roll coats the lithium liquid on the surface of the pole piece, an...

Embodiment 3

[0055] This embodiment provides a use figure 1 The method for supplementing lithium of the negative electrode pole piece with the shown pole piece lithium supplementing device, the method is:

[0056] The lithium liquid production device will prepare lithium solids into lithium liquid under the heating condition of 100°C, and the lithium liquid will be transported to the lithium liquid storage tank through pipelines, and the pipeline, lithium liquid storage tank and gravure roller will be cleaned before coating the lithium liquid. Keep warm to 100°C, when the lithium liquid is brought into the groove of the gravure roll, cool the gravure roll to 80°C with a cold dry gas with a dew point of 0°C, and the negative pole piece passes through the pole piece The unwinding assembly is sent to the lithium liquid coating assembly. When the negative pole piece passes through the counter roll composed of a gravure roll and a hot back roll, the gravure roll coats the lithium liquid on the ...

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Abstract

The invention provides a lithium supplement device for a pole piece and a lithium supplement method of the device. The device is provided with a sealing shell, a pole piece unrolling assembly, a lithium liquid coating assembly, a cooling assembly, a normal-temperature roll-in assembly and a pole piece rolling assembly, and the pole piece unrolling assembly, the lithium liquid coating assembly, thecooling assembly, the normal-temperature roll-in assembly and the pole piece rolling assembly are arranged in the sealing shell and connected in sequence; the lithium liquid coating assembly comprises a pair of rollers composed of an intaglio roller and a hot back roller, and a lithium liquid storage groove is formed below the intaglio roller and connected with a lithium liquid production devicethrough a pipe. The lithium supplement device is simple in structure, the equipment cost is greatly lowered, the problems such as rolling bonding and adhesion during pressing fit of a lithium band arecompletely solved, the consistency of lithium supplement is greatly improved, the production high-quality rate is greatly increased, and the production efficiency is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of lithium ion batteries, and relates to a lithium replenishing device and a lithium replenishing method, in particular to a pole piece lithium replenishing device and a lithium replenishing method. Background technique [0002] Lithium-ion batteries have the advantages of high working voltage, high energy density, long cycle life, and no memory effect. Lithium-ion batteries have become the main power source of various portable electronic products. With the establishment of my country's "Energy Saving and New Energy Automobile Industry Development Plan" and the further promotion of new energy industries such as energy storage batteries, the demand for power and energy storage lithium-ion batteries will increase significantly. [0003] With the development of new energy vehicles, the existing market has higher and higher requirements for the mileage and service life of electric vehicles, and most of the milea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/1395
CPCH01M4/1395Y02E60/10
Inventor 李龙曾志恒
Owner CONTEMPORARY AMPEREX TECH CO
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