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Testing device and method of adhesive force of lithium ion battery pole piece

A lithium-ion battery and testing device technology, applied in the direction of measuring devices, mechanical devices, instruments, etc., can solve the problems of adverse effects, no relatively fixed, etc., and achieve the effect of precise adhesion, fast and adhesion

Inactive Publication Date: 2019-07-16
SUZHOU YOULION BATTERY INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During coating production, the pole piece is generally folded or glued to the pole piece, and the adhesion of the pole piece is judged according to the material drop. Adverse effects on subsequent production

Method used

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  • Testing device and method of adhesive force of lithium ion battery pole piece
  • Testing device and method of adhesive force of lithium ion battery pole piece
  • Testing device and method of adhesive force of lithium ion battery pole piece

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] see figure 1 , the figure shows a lithium-ion battery pole piece adhesion test device provided by Embodiment 1 of the present invention, in which a box 1 and three rods 2 are provided, and the three rods 2 are respectively the first rods 21. The second rod body 22 and the third rod body 23, the diameter of the first rod body 21 is 4 mm, the diameter of the second rod body 22 is 3 mm, the diameter of the third rod body 23 is 2 mm, the first rod body 21, Both the second rod body 22 and the third rod body 23 are stainless steel rod bodies.

[0029] continue to see figure 1 The box body 1 has a bottom plate 12, a first side plate 13, a second side plate 14 and a third side plate 15, and the first side plate 13, the second side plate 14 and the third side plate 15 surround the U-shaped side plate member and Fixedly connected on the bottom plate 12, the second side plate 14 and the third side plate 15 are symmetrically arranged, and the second side plate 14 and the third si...

Embodiment 2

[0040] Others are the same as those described in Embodiment 1, except that the box body 1 is a rectangular box body, the opening 11 is located on the top surface of the box body 1, and the opening 11 is still provided with a first rod body 21 and a second rod body. Body 22 and the third rod body 23, the diameter of the first rod body 21 is 4mm, the diameter of the second rod body 22 is 3mm, the diameter of the third rod body 23 is 2mm, the first rod body 21, the second rod body 22 and the third rod body 23 are all stainless steel rod bodies.

[0041] Therefore, in the adhesion test device and method of a lithium-ion battery pole piece provided in this embodiment, the pole piece is pulled on the steel rod in the same direction during the test through the adhesion test device provided, and according to the The state of the surface of the pole piece is compared with the judgment standard to confirm the adhesion of the pole piece; therefore, compared with the prior art, this embod...

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Abstract

The invention provides a testing device of the adhesive force of a lithium ion battery pole piece. The testing device comprises a box body and a plurality of bar bodies; an opening is formed in the surface of the box body; and the bar bodies are provided with smooth surfaces and installed at the opening, and two opposite ends of the bar bodies are fixedly connected to two opposite inner walls of the box body correspondingly. The invention further discloses a testing method of the adhesive force of the lithium ion battery pole piece. Compared with the prior art, the testing device and method ofthe adhesive force of the lithium ion battery pole piece can rapidly and precisely judge the adhesive force of a pole piece.

Description

technical field [0001] The invention relates to the field of lithium-ion batteries, in particular to a device and method for testing the adhesion of pole pieces of lithium-ion batteries. Background technique [0002] The production process of lithium-ion batteries includes processes such as homogenization, coating, rolling, slitting, winding, liquid injection, sealing, pre-charging, aging, and sorting. The status of each process will have an impact on battery performance. Among them, the coating process has a great influence on the production capacity and the consistency of the battery, and the quality of the pole piece directly determines the performance of the battery. [0003] The items that characterize the properties of the pole piece include thickness, surface density, weight loss ratio, length and width dimensions, burrs and adhesion, etc., and each item has different effects on the performance of the battery cell. The adhesion of the pole piece has a great influence...

Claims

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Application Information

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IPC IPC(8): G01N19/04
CPCG01N19/04
Inventor 代贤友尚随军郑荣鹏毛焕宇
Owner SUZHOU YOULION BATTERY INC
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