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Detection method for quality of lithium battery pole piece

A quality inspection method and lithium battery technology, applied in the direction of measuring electrical variables, measuring devices, measuring resistance/reactance/impedance, etc., can solve the problem of inability to detect the uniformity of the coating on the surface of the pole piece

Active Publication Date: 2014-11-19
中创新航科技(江苏)有限公司
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AI Technical Summary

Problems solved by technology

It solves the problem that the current pole piece quality detection method cannot detect the uniformity of the coating distribution on the surface of the pole piece. The method of the present invention can intuitively display the quality of the pole piece, and has a good effect on the quality detection of the coating

Method used

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  • Detection method for quality of lithium battery pole piece
  • Detection method for quality of lithium battery pole piece
  • Detection method for quality of lithium battery pole piece

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Embodiment Construction

[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0026] The specific steps of the lithium battery pole piece quality detection method are as follows:

[0027] a) Take a pole piece containing the lug area and the coating area, and take points in the coating area according to the uniform distribution;

[0028] b) Measure the resistance between the lug area and each point in the coating area, and record the resistance value;

[0029] c) Compare the above resistance value with the set upper and lower limit thresholds, and judge the difference between the resistance values ​​as a whole. If the difference is within the allowable range, it is judged that the coating of the pole piece coating area is uniform; if the difference If the degree exceeds the allowable range, the coating of the pole piece coating area will be uneven.

[0030] The discrimination method for judging the difference between the resistance va...

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Abstract

The invention relates to a detection method for the quality of a lithium battery pole piece. The method comprises the steps of picking up points uniformly from a pole piece coating region, testing the resistance between a pole lug region and the points picked from the coating region, and then determining whether the coating is uniform by determining whether the resistance is uniformly distributed. The method can reflect the coating quality of the pole piece more objectively. The detection method provided by the invention facilitates the detection of the quality of the battery pole piece, and can provide feedback and guidance to process adjustment.

Description

technical field [0001] The invention relates to the field of quality detection of lithium battery pole pieces, in particular to a quality detection method of lithium battery pole pieces. Background technique [0002] The quality of the lithium battery pole piece has a great influence on the quality of the whole battery. At present, the existing technology mainly detects the quality of the pole piece from two aspects of weight and thickness, but the above method cannot reflect the uniformity of the coating on the surface of the pole piece. The present invention provides The invention discloses a method for detecting the quality of the pole piece of a lithium battery. By detecting the resistance distribution of the pole piece, the surface quality of the pole piece is more clearly reflected, and a basis is provided for the adjustment of the coating process. Contents of the invention [0003] The object of the invention is to propose a method for detecting the quality of lithi...

Claims

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Application Information

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IPC IPC(8): G01R27/02
Inventor 张祥周志勇李少军杨麟畅志远张凌寒
Owner 中创新航科技(江苏)有限公司
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