Battery cell quality detection method

A quality inspection method and cell technology, applied in measuring devices, image data processing, instruments, etc., can solve problems such as the unrealistic distance between the tabs of the cell, and achieve the effects of ensuring process quality, reducing costs, and reducing detection deviations

Inactive Publication Date: 2018-04-20
WUXI LEAD INTELLIGENT EQUIP CO LTD
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AI Technical Summary

Problems solved by technology

In the existing system, the detection of the cell winding process is mainly concentrated in the cell winding stage, and is limited to detecting the distance between the cathode, anode and diaphragm of the cell; because of the huge daily production volume, each cell is manually inspected The tab spacing is unrealistic

Method used

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Embodiment Construction

[0035] The present invention will be further described below in conjunction with specific drawings and embodiments.

[0036] The invention proposes a battery quality detection method, adding a CCD detection system at the unloading place of the lithium battery winding machine to detect the distance between the tabs of the battery core and the distance between the tabs and the edge of the battery core; and analyze the results, the The judgment result is sent to the industrial computer of the lithium battery winding machine, and the industrial computer handles the cells with abnormal detection accordingly, so as to improve the process quality of the lithium battery.

[0037] Such as figure 1 Shown, the present invention is realized through the following specific steps:

[0038] Step S1, through a set of mechanical operations, transfer the wound cell to the preset area of ​​image acquisition; the cell is placed horizontally in the preset area; the image of the cell is collected b...

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Abstract

The invention provides a battery cell quality detection method, which comprises the following steps of S1, collecting a battery cell image of a preset region; S2, preprocessing the collected image; then, detecting the positions of a battery cell anode tab, a cathode tab and the battery cell edge; calculating the tab space between the battery cell cathode tab and the anode tab and the distance fromthe tab to the battery cell side edge according to the detected relative positions; respectively performing comparison with the corresponding preset upper and lower limit parameters; making the judgment to obtain the battery cell quality detection result; S3, performing classified processing on the detected battery cell according to the battery cell detection result. The battery cell winding technical quality can be detected in real time, so that the product quality in the production process of a battery cell can be improved; the manual detection cost is reduced.

Description

technical field [0001] The invention relates to the technical field of lithium battery production, in particular to a quality detection method for lithium battery cells. Background technique [0002] In the lithium battery production process, lithium battery cell winding is a key link, and the technological quality of the cell directly affects the final product quality of the lithium battery. Therefore, the detection of the cell process is particularly important, and the distance between the tabs of the cell is one of the index data. In the existing system, the detection of the cell winding process is mainly concentrated in the cell winding stage, and is limited to detecting the distance between the cathode, anode and diaphragm of the cell; because of the huge daily production volume, each cell is manually inspected The tab spacing is unrealistic. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies in the prior art, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/84G01B11/02G01B11/14G06T3/60G06T7/13
CPCG01B11/028G01B11/14G01N21/84G06T3/608G06T7/13
Inventor 魏爽王文景杜博张琪玮汪小宝
Owner WUXI LEAD INTELLIGENT EQUIP CO LTD
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