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Lithium battery production process

A production process and lithium battery technology, applied in the direction of secondary batteries, battery electrodes, electrochemical generators, etc., can solve the problems of inconvenient adjustment or adjustment, the thickness of the coating machine, and the reduction of lithium battery charge and discharge performance, etc., to achieve Effects of improving life, eliminating air bubbles, and improving discharge time

Active Publication Date: 2020-12-18
淮北市智俊科技有限公司
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AI Technical Summary

Problems solved by technology

[0005] In order to make up for the deficiencies of the prior art and solve the problem that the presence of air bubbles in the mixed slurry in the prior art will seriously reduce the charge and discharge performance of the lithium battery and that the thickness of the coating machine in the prior art cannot be adjusted or is inconvenient to adjust, the present invention proposes A lithium battery production process

Method used

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Embodiment approach

[0043] As an embodiment of the present invention, rubber rollers 24 are evenly arranged on the edge of the rotating rod 18 inside the annular chute 25; the rotating shafts at both ends of the rubber roller 24 are fixedly connected to the edges of the rotating rod 18 through springs; At this time, the rubber roller 24 is elastically pressed against the inner wall of the annular chute 25, thereby making the rotation of the rotating rod 18 more stable, making the adjustment of the position more accurate, and preventing the gap between the rotating rod 18 and the annular chute 25 from being too large. , and then when the rotating rod 18 is adjusted to a suitable position, the rotating rod 18 will still have a slight position shift, and the rubber roller 24 itself can rotate around its own rotating shaft, so that the rotation of the rotating rod 18 will not consume a lot of effort.

[0044] As an embodiment of the present invention, several groups of columnar sliding grooves 30 are ...

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Abstract

The invention belongs to the technical field of lithium batteries, and particularly relates to a lithium battery production process, which comprises: slurry preparation: grinding a lithium iron phosphate positive electrode material by using a ball mill, adding a solvent and a thickener to a mixing tank, and carrying out low-speed stirring at a speed of 600-800 r / min to obtain a slurry, while stirring, adding the ground electrode positive electrode material into the stirring tank in batches; and stirring the components for 50-60 minutes after the addition is finished, uniformly stirring the solvent and the thickening agent, and adding the powder of the positive electrode material in batches. According to the coating device, bubbles in the mixed slurry can be eliminated, so that the coatingis more uniform and compact, the coating thickness can be adjusted, and the coating device can be used for manufacturing pole pieces with different discharge intensities; meanwhile, the step of extruding the current collection carrier coated with the mixed slurry by using the lower pressing roller and the upper pressing roller is added in the coating device, so that the mixed slurry is more compact, the discharge time of the lithium battery can be further increased and the service life of the lithium battery is prolonged.

Description

technical field [0001] The invention belongs to the technical field of lithium batteries, in particular to a lithium battery production process. Background technique [0002] "Lithium battery" is a type of battery that uses lithium metal or lithium alloy as the positive / 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 are very demanding on the environment. High; 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. Lithium metal batteries, the fifth generation of rechargeable batteries, were born in 1996 , Its safety, specific capacity, self-discharge rate and performance-price ratio are all superior to lithium-ion batteries. Due to its own high technical requirements, only a few companies in a few countries a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/04H01M4/1397H01M10/0585H01M10/0525B05D1/28B05D3/02
CPCB05D1/28B05D3/0254H01M4/0404H01M4/1397H01M10/0525H01M10/0585Y02E60/10Y02P70/50
Inventor 戚园园金磊
Owner 淮北市智俊科技有限公司
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