Method for detecting pole piece folding and platform for detecting pole piece folding

A detection platform and pole piece technology, applied in the direction of using radiation for material analysis, etc., can solve problems such as the inability to guarantee zero leakage, outflow of defective products, deviation of detection results, etc., and achieve the effect of improving clarity

Pending Publication Date: 2022-01-07
SVOLT ENERGY TECHNOLOGY CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the traditional x-ray detection is judged by the imaging of the four corners of the detection pole group; when the pole piece turns over in a deep position, due to the limitation of the detection angle and magnification, it may not be possible to detect the deep position Turnover, or it is impossible to detect the more serious turnover, therefore, there is no guarantee of zero missed killing, resulting in the outflow of defective products
Moreover, through the X-ray four-corner detection method, there are four imaging components. When the consistency of the detection angles of the four imaging components is insufficient, the imaging quality is difficult to guarantee, which also causes deviations in the detection results.

Method used

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  • Method for detecting pole piece folding and platform for detecting pole piece folding
  • Method for detecting pole piece folding and platform for detecting pole piece folding

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Embodiment 1

[0033] This embodiment relates to a method for detecting the turning over of a pole piece, which is beneficial for detecting the turning over of the pole piece of a battery cell.

[0034] In this method, the pole piece is placed between the X-ray source and the detection device, and the radiation irradiated by the X-ray source on the pole piece and its periphery is projected on the detection device, which is converted into visible light by the detection device, and then the detection image of the pole piece is generated. .

[0035] Based on the above-mentioned detection principle, in this embodiment, the X-ray source 11 adopts the X-ray source with the highest tube voltage of 130KV; in this way, it can meet the imaging requirements of the pole piece and reduce the damage to the characteristics of the pole piece.

[0036] When testing, it is preferable to set the relevant parameters of the X-ray source as follows: FOD = 150 ~ electrode piece mm, FID = 450 ~ 550mm; single frame ...

Embodiment 2

[0053] This embodiment relates to a pole piece turning detection platform, which is set based on the method provided in the first embodiment, and can be used to detect the turning position of the pole piece; an exemplary structure thereof is as follows figure 2 shown.

[0054] The pole piece turning detection platform includes a detection platform 1 , a positioning mechanism 14 disposed on the detection platform 1 , and a detection device 10 and an X-ray source 11 respectively disposed on both sides of the positioning mechanism 14 . Wherein, the pole piece or pole group 2 to be tested can be fixed on the positioning mechanism 14 .

[0055] By setting the positioning mechanism 14, the detection device 10 and the X-ray source 11 on the detection platform 1, the pole piece is fixed on the positioning mechanism 14, the pole piece is irradiated by the X-ray source 11, and the radiation is converted into visible light by the detection device 10 and generated Image; For the folded ...

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Abstract

The invention provides a method for detecting pole piece folding and a platform for detecting pole piece folding. According to the method for detecting pole piece folding, a pole piece is arranged between an X-ray source and a detection device, rays irradiated by the X-ray source on the pole piece and the periphery of the pole piece are projected on the detection device and converted into visible light through the detection device, and then a detection image of the pole piece is generated. According to the method for detecting pole piece folding, the X-ray source and the detection device are adopted, the pole piece is irradiated through the X-ray source, rays are converted into visible light through the detection device, the image is generated, different states can be displayed on the folding area on the pole piece and the generated image, and thus the folding condition of the pole piece can be detected and analyzed.

Description

technical field [0001] The invention relates to the technical field of battery material detection, in particular to a method for detecting the folding of pole pieces. In addition, the invention also relates to a platform for detecting pole piece turning over. Background technique [0002] With the development of new energy vehicles, electric vehicles powered by lithium-ion batteries have begun to be widely used. The power battery pack of an electric vehicle is composed of a single battery, and a single battery is composed of several battery cell pole groups. During the production process of each battery cell pole group, taking the stacking process as an example, it is necessary to detect each of the battery cell pole groups. Whether the state of the pole piece meets the process standard, if the state of the pole piece is turned over, it is a substandard product, which needs to be detected and scrapped. [0003] At present, most of the methods for detecting the turning of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N23/04G01N23/18
CPCG01N23/04G01N23/18
Inventor 梅锦江徐春龙梁明吴德刚李鹏飞
Owner SVOLT ENERGY TECHNOLOGY CO LTD
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