Method for drying lithium ion battery pole pieces

A technology of lithium ion battery and drying method, which is applied in the directions of pretreatment surface, coating, device for coating liquid on the surface, etc. The effect of efficiency

Inactive Publication Date: 2014-09-10

赖昭文

1 Cites 6 Cited by

AI-Extracted Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for drying lithium-ion battery pole pieces...

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Abstract

The invention discloses a method for drying lithium ion battery pole pieces, and relates to the technical field of lithium ion batteries. The method comprises the following steps that the lithium ion battery pole pieces are placed in a vacuum drying box to be dried, the drying temperature is 80-120 DEG C, pressure is 0.02-0.05 MPa, and the drying time is 6-10 minutes; nitrogen is led into the drying box for 10-15 minutes, the drying box is vacuumized to 0.02-0.05 MPa, the step A and the step B are sequentially executed for three times, and the dried lithium ion battery pole pieces are obtained. Compared with the prior art, drying time is shorter, energy consumption is low, the dried pole pieces are good in softness, battery manufacturing is facilitated, and battery production efficiency can be conveniently improved.

Application Domain

Pretreated surfacesCoatings

Technology Topic

Electrical batteryMineralogy +6

Examples

Experimental program(3)

Example Embodiment

[0012] Example 1

[0013] The method for drying the pole pieces of the lithium ion battery in this embodiment is as follows:

[0014] A. Put the lithium ion battery pole pieces into a vacuum drying box for drying, the drying temperature is 80°C, the pressure is 0.05MPa, and the drying time is 10 minutes;

[0015] B. Pour nitrogen with a moisture content of less than 10 ppm into the drying box and keep the nitrogen for 15 minutes;

[0016] C. Vacuum to 0.05MPa, repeat step A and step B three times in sequence to obtain.

Example Embodiment

[0017] Example 2

[0018] The method for drying the pole pieces of the lithium ion battery in this embodiment is as follows:

[0019] A. Put the lithium ion battery pole pieces into a vacuum drying box for drying, the drying temperature is 100°C, the pressure is 0.04MPa, and the drying time is 8 minutes;

[0020] B. Pour nitrogen with a moisture content of less than 10 ppm into the drying box and keep it for 12 minutes;

[0021] C. Evacuate to 0.04MPa, repeat step A and step B three times in sequence to obtain.

Example Embodiment

[0022] Example 3

[0023] The method for drying the pole pieces of the lithium ion battery in this embodiment is as follows:

[0024] A. Put the lithium ion battery pole pieces into a vacuum drying box for drying, the drying temperature is 120°C, the pressure is 0.02MPa, and the drying time is 6 minutes;

[0025] B. Pour nitrogen with a moisture content of less than 10 ppm into the drying box and keep it for 10 minutes;

[0026] C. Evacuate to 0.02MPa, repeat step A and step B three times in sequence to obtain.

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PUM

Description & Claims & Application Information

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Classification and recommendation of technical efficacy words

Low energy consumption
Short drying time

Method for drying lithium ion battery pole pieces

A technology of lithium ion battery and drying method, which is applied in the directions of pretreatment surface, coating, device for coating liquid on the surface, etc. The effect of efficiency

AI-Extracted Technical Summary

Problems solved by technology

Abstract

Examples

Example Embodiment

Example Embodiment

Example Embodiment

PUM

Description & Claims & Application Information

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