CN113899766A - Method for detecting pole piece turnover and pole piece turnover detection platform - Google Patents
Method for detecting pole piece turnover and pole piece turnover detection platform Download PDFInfo
- Publication number
- CN113899766A CN113899766A CN202111270427.XA CN202111270427A CN113899766A CN 113899766 A CN113899766 A CN 113899766A CN 202111270427 A CN202111270427 A CN 202111270427A CN 113899766 A CN113899766 A CN 113899766A
- Authority
- CN
- China
- Prior art keywords
- pole piece
- detection
- ray source
- detecting
- detection device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/06—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption
- G01N23/18—Investigating the presence of flaws defects or foreign matter
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
Abstract
本发明提供了一种用于检测极片翻折的方法及极片翻折检测平台。本发明的用于检测极片翻折的方法该方法是将极片置于X射线源和探测装置之间，X射线源照射于极片及其外围的射线投射于探测装置上，并由探测装置转换为可见光，进而生成极片的检测图像。本发明的用于检测极片翻折的方法，采用X射线源和探测装置，通过X射线源照射极片，利用探测装置将射线转化为可见光并生成图像，对于极片上的翻折叠合区域，生成的图像上会显示出不同的状态，从而可以检测分析出极片的翻折情况。
The invention provides a method for detecting the folding of a pole piece and a detection platform for the folding of a pole piece. The method for detecting the folding of a pole piece of the present invention is that the pole piece is placed between the X-ray source and the detection device, and the X-ray source irradiated on the pole piece and its periphery is projected on the detection device, and is detected by the detection device. The device converts to visible light, which in turn generates an inspection image of the pole piece. The method for detecting the folding of a pole piece of the present invention adopts an X-ray source and a detection device, irradiates the pole piece through the X-ray source, and uses the detection device to convert the radiation into visible light and generate an image. For the folding and folding area on the pole piece, The different states are displayed on the generated image, so that the folding of the pole pieces can be detected and analyzed.
Description
Technical Field
The invention relates to the technical field of battery material detection, in particular to a method for detecting pole piece turnover. In addition, the invention also relates to a pole piece folding detection platform.
Background
With the development of new energy vehicles, electric vehicles powered by lithium ion batteries have come to be widely used. The power battery pack of the electric automobile is composed of a single battery, the single battery is composed of a plurality of battery cell pole groups, when the battery cell pole group of each battery is in the production process, a lamination process is taken as an example, whether the state of each pole piece in the battery cell pole group meets the process standard needs to be detected, if the state of the pole piece is folded, the pole piece belongs to a unqualified product, and the pole piece needs to be detected and scrapped.
At present, the means for detecting the folding of the cell pole piece is mostly to image four corners of the cell pole group by using X-ray (X-ray) rays, and then judge whether the image characteristics of the pole piece meet the process standard by using a digital image analysis technology. However, the conventional x-ray detection is to determine by detecting four corner images of the polar group; when the pole piece turns over and rolls over and appear in the deep position, because detect the restriction of angle and magnification, probably can't detect the turning over of deep position, perhaps can't detect and turn over a comparatively serious condition, consequently, can not guarantee zero and miss and kill, cause the defective products to flow. Moreover, the number of the imaging assemblies is four in an X-ray four-corner detection mode, and when the consistency of the detection angles of the four imaging assemblies is insufficient, the imaging quality is difficult to guarantee, which causes the deviation of the detection result.
Disclosure of Invention
In view of this, the present invention is directed to provide a method for detecting a folding of a pole piece, so as to facilitate detecting a folding condition on a cell pole piece.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a method for detecting the turnover of a pole piece,
the method comprises the steps of placing a pole piece between an X-ray source and a detection device, projecting rays irradiated on the pole piece and the periphery of the pole piece by the X-ray source onto the detection device, converting the rays into visible light by the detection device, and further generating a detection image of the pole piece.
Furthermore, the X-ray source adopts the X-ray source with the highest tube voltage of 130 KV.
Further, during detection, the X-ray source adopts the following setting parameters: FOD is 150-pole piece mm, FID is 450-550 mm; the single-frame exposure time is 180-240 ms.
Furthermore, the voltage of the X-ray source is 100-130 KV, and the current is 180-240 muA.
Further, the detection device adopts a flat panel detector.
Further, for the generated detection image, the turnover area on the pole piece is judged according to the change condition of the gray value in the image area.
Furthermore, in the detection process, four corners of the pole piece are scanned one by one to form images.
Furthermore, in the detection process, the front surface and the back surface of the pole piece are respectively scanned and imaged.
Compared with the prior art, the invention has the following advantages:
according to the method for detecting the turnover of the pole piece, the X-ray source and the detection device are adopted, the pole piece is irradiated by the X-ray source, rays are converted into visible light by the detection device and generate images, and different states can be displayed on the generated images for the turnover overlapping area on the pole piece, so that the turnover condition of the pole piece can be detected and analyzed.
Meanwhile, reasonable parameters such as focal length, power and exposure time are set for the detected irradiation, a detection image meeting the analysis requirement can be generated, and whether a folded and folded area exists on the pole piece is analyzed through matching a corresponding automatic detection algorithm.
In addition, aiming at the characteristic that an X-ray image generated by the detection device is a black-and-white image, the X-ray projection amount of an unfolded area of the pole piece is more, the gray level is lower, the X-ray projection amount of a folded area is less, and the gray level is higher; through the gray level analysis of the image, the folding area and the folding position on the pole piece can be accurately judged.
The invention also aims to provide a pole piece turnover detection platform which is arranged based on the method for detecting the turnover of the pole piece, and the detection platform comprises a detection platform, a positioning mechanism arranged on the detection platform, and a detection device and an X-ray source which are respectively arranged at two sides of the positioning mechanism; the pole piece can be fixed on the positioning mechanism.
Further, the detection device is arranged on the detection platform through a moving unit, and the moving unit is provided with a driving mechanism; the position of the moving unit is adjustable under the driving of the driving mechanism.
According to the pole piece turnover detection platform, the positioning mechanism, the detection device and the X-ray source are arranged on the detection platform, the pole piece is fixed on the positioning mechanism, the pole piece is irradiated by the X-ray source, and rays are converted into visible light by the detection device to generate an image; for the folding and folding overlapped area on the pole piece, different states can be displayed on the generated image, so that the folding and folding condition of the pole piece can be detected and analyzed.
In addition, detection device passes through the mobile unit and the position is adjustable, when scanning one by one four angles to the pole piece, can not only do benefit to the definition that improves the scanning formation of image, and do benefit to and adopt the less detection device of size to realize the detection purpose through adjustment detection device's position to each angle of scanning respectively.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, illustrate embodiments of the invention and together with the description serve to explain the invention, and the description is given by way of example only and without limitation to the terms of relative positions. In the drawings:
FIG. 1 is a diagram illustrating an imaging diagram of a pole piece inspection process according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a pole piece folding detection platform according to a second embodiment of the present invention;
description of reference numerals:
1. a detection platform; 10. a detection device; 100. a flat panel detector; 11. an X-ray source; 12. a drive mechanism; 13. a mobile unit; 14. a positioning mechanism; 2. and (4) pole groups.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it should be noted that, if terms indicating orientation or positional relationship such as "upper", "lower", "inner", "back", etc. appear, they are based on the orientation or positional relationship shown in the drawings and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In addition, in the description of the present invention, the terms "mounted," "connected," and "connecting" are to be construed broadly unless otherwise specifically limited. For example, the connection may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through both elements. To those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in conjunction with specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Example one
The embodiment relates to a method for detecting the turnover of a pole piece, which is beneficial to detecting the turnover condition of a battery cell pole piece.
The method is characterized in that a pole piece is arranged between an X-ray source and a detection device, the X-ray source irradiates the pole piece and rays around the pole piece are projected on the detection device and are converted into visible light by the detection device, and then a detection image of the pole piece is generated.
Based on the above detection principle, in the present embodiment, the X-ray source 11 adopts an X-ray source with the highest tube voltage of 130 KV; therefore, the irradiation imaging requirements on the pole piece can be met, and the damage of irradiation on the pole piece characteristics can be reduced.
During detection, the relevant parameters of the X-ray source are preferably set as follows: FOD is 150-pole piece mm, FID is 450-550 mm; the single-frame exposure time is 180-240 ms; the voltage of the X-ray source is 100-130 KV, and the current is 180-240 muA.
Reasonable parameters such as focal length, power and exposure time are set for the detected irradiation, and a detection image which meets the analysis requirement can be generated. For example, under the detection parameter conditions of FOD 160mm, FID 480mm, voltage 120KV, current pole piece μ a, and single frame exposure time pole piece ms, an image with a suitable gray value can be generated, which is beneficial to analyzing whether there is a folding and overlapping region on the pole piece by matching with a corresponding automatic detection algorithm.
The FOD (focus to object distance) refers to the distance from the focus to the sample, and the FID (focus to file distance) refers to the distance from the focus to the film. In this embodiment, the focal point is the focal point of the X-ray source, and the negative film is the detection device.
Meanwhile, the detection device can be an instrument capable of imaging X-rays. In the present embodiment, the detection device is a flat panel detector. By adopting the flat panel detector, for example, by using a Yirui NDT0505J type flat panel detector, the configuration cost is relatively low, the X-ray imaging performance is good, clear images with distinct layers can be generated according to different ray intensities, and the folding condition of the pole piece is analyzed.
In a specific detection process, four corners of the pole piece can be scanned one by one to form images; meanwhile, the positive and negative surfaces of the pole piece can be scanned and imaged respectively. Based on the condition that the turnover of the pole piece usually occurs at the corner of the pole piece, the four corners of the pole piece are scanned one by one, so that the turnover condition of the pole piece can be comprehensively detected, and the condition of missed detection is reduced. The power of the X-ray source is adjusted, so that the pole group overlapped by a plurality of pole pieces can be detected and scanned; at this moment, through positive and negative two-sided scanning, do benefit to and detect which layer the position of rolling over of pole piece is in, can improve the rate of accuracy that detects. When the single pole piece is subjected to front-back double-side scanning, the direction and the position of the pole piece turnover can be accurately judged.
In addition, for the detection image generated by the flat panel detector, the turnover area on the pole piece can be judged according to the change condition of the gray value in the image area. Aiming at the characteristic that an X-ray image generated by a detection device is a black-and-white image, the X-ray projection amount of an unfolded area of the pole piece is more, the gray level is lower, the X-ray projection amount of a folded area is less, and the gray level is higher; through the gray level analysis of the image, the folding area and the folding position on the pole piece can be accurately judged.
During the period, X-rays irradiate the large surface of the pole piece or the pole group with a plurality of superposed pole pieces, and the flat panel detector converts the X-rays into visible light. Under the action of the flat panel detector, visible light is converted into electrons, the electrons charge the capacitor, current is generated in the discharging process of the capacitor, and the current is converted into a digital signal through A/D conversion, so that detection imaging is completed.
In the process, the flat panel detector scans and images one corner of the pole piece one by one. During testing, the light pipe parameters of the X-ray are fixed after debugging, and the imaging gray value is adjusted by adjusting the imaging exposure. The exposure can be adjusted and modified to improve the gray scale of the image and make the imaging quality clearer. After the adjustment is completed, the test is kept constant in the testing process. The mode has better imaging effect relative to automatic exposure adjustment, and can avoid the conditions that the scanning beat is lengthened and the detection time is increased in the automatic exposure adjustment imaging process.
When shooting is carried out on the front side, the bevel face is over against the X-ray tube, and the condition that the bevel is on the first layer is simulated; when shooting is carried out on the back side, the bevel face faces back to the X-ray tube, and the condition that the bevel is on the last layer is simulated. The front side and the back side are photographed, imaging is clear, and the layer where the turnover happens on the pole piece can be accurately imaged and distinguished. The image of the pole piece obtained by the above detection method is shown in fig. 1.
The X-ray penetration capacity of the cathode material is weaker than that of the anode material, so the imaging definition of the anode bevel is higher than that of the cathode bevel; according to the gray value adjustment, the turnover area can be effectively compared, and the turnover area has obvious overlapping shadow in imaging.
In the process, the shadow detection needs to be distinguished according to the gray value, a flat panel detector with larger element size needs to be adopted, the larger the A/Dconverter (gray level value) value is, the more obvious the gray level is, the better the imaging contrast is, the more convenient the condition of the state of the large-area gray value in the imaging is, the more convenient the judgment whether the pole piece is folded or not, and the folded position in the deeper part of the folded position can be distinguished.
In common detection by using a flat panel detector, due to the influence of cone beam light, when a detection electrode group is thick, the images on two sides are easy to distort; according to the method, the X-ray source is adopted to carry out large-area detection on the surface of the electrode group, so that the problem of imaging distortion can be effectively avoided.
In addition, in the detection method of the embodiment, preferably, the corresponding automatic detection algorithm is matched, and the deep learning algorithm automatically learns the grayscale abnormal feature of the pole piece turnover. The automatic detection algorithm has good application effect in the field of image analysis. Based on the existing automatic detection algorithm, in combination with the detection condition of the embodiment, the deep learning algorithm can adopt the following specific procedures:
acquiring imaging picture data, dynamically enhancing and denoising an image, positioning an AI detection area, identifying a pole piece turnover defect (based on imaging picture gray level jump) by the AI, analyzing a detection result (a turnover position, a turnover degree and the like), and outputting the detection result.
In the detection method of this embodiment, it should be noted that the X-ray source needs to have sufficient penetration capability, and can penetrate through the entire pole group, and a high-power light tube needs to be matched in hardware selection, and in addition, the a/D conversion bit number is the gray level of the X-ray, and the larger the a/D conversion bit number is, the higher the gray level of the obtained X-ray image is, that is, the higher the black-white contrast of the image is, which is more beneficial to analyzing and determining the folding position on the pole piece.
In summary, in the method for detecting the folding of the pole piece in this embodiment, the X-ray source and the detection device are adopted, the pole piece is irradiated by the X-ray source, the detection device is used to convert the ray into the visible light and generate the image, and for the folding overlapping area on the pole piece, different states can be displayed on the generated image, so that the folding condition of the pole piece can be detected and analyzed.
Example two
The embodiment relates to a pole piece folding detection platform which is arranged based on the method provided by the first embodiment and can be used for detecting a pole piece folding part; one exemplary configuration of which is shown in fig. 2.
The pole piece folding detection platform comprises a detection platform 1, a positioning mechanism 14 arranged on the detection platform 1, and a detection device 10 and an X-ray source 11 which are respectively arranged on two sides of the positioning mechanism 14. The pole piece or pole group 2 to be detected can be fastened to the positioning means 14.
The detection platform 1 is provided with the positioning mechanism 14, the detection device 10 and the X-ray source 11, the pole piece is fixed on the positioning mechanism 14, the X-ray source 11 irradiates the pole piece, and the detection device 10 converts the ray into visible light and generates an image; for the folding and folding overlapped area on the pole piece, different states can be displayed on the generated image, so that the folding and folding condition of the pole piece can be detected and analyzed.
Furthermore, it is preferable that the detecting device 10 is provided on the detecting platform 1 via the moving unit 13; meanwhile, a drive mechanism 12 is provided for the moving unit 13. The position of the moving unit 13 can be adjusted by driving the driving mechanism 12, so as to drive the detecting device 10 to adjust the position. Detection device 10 passes through mobile unit 13 and the position is adjustable, when scanning four angles of pole piece one by one, can be through adjustment detection device 10's position, respectively form images to each angle of scanning, not only do benefit to the definition that improves the scanning formation of image, and do benefit to and adopt the less detection device 10 realization of size to detect the purpose.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A method for detecting pole piece turnover is characterized in that:
the method comprises the steps that a pole piece is arranged between an X-ray source (11) and a detection device (10), the X-ray source (11) irradiates the pole piece and rays on the periphery of the pole piece are projected on the detection device (10), the pole piece and the rays are converted into visible light by the detection device (10), and then a detection image of the pole piece is generated.
2. The method for detecting pole piece flipping of claim 1, wherein:
the X-ray source (11) adopts the X-ray source with the highest tube voltage of 130 KV.
3. The method for detecting pole piece flipping according to claim 2, wherein:
during detection, the X-ray source (11) adopts the following setting parameters: FOD is 150-pole piece mm, FID is 450-550 mm; the single-frame exposure time is 180-240 ms.
4. The method for detecting pole piece flipping according to claim 2, wherein:
the voltage of the X-ray source (11) is 100-130 KV, and the current is 180-240 muA.
5. The method for detecting pole piece flipping of claim 1, wherein:
the detection device (10) adopts a flat panel detector (100).
6. The method for detecting pole piece turnover according to any one of claims 1 to 5, wherein:
and judging the turnover area on the pole piece according to the change condition of the gray value in the image area for the generated detection image.
7. The method for detecting pole piece flipping of claim 6, wherein:
and in the detection process, scanning and imaging four corners of the pole piece one by one.
8. The method for detecting pole piece flipping of claim 7, wherein:
and in the detection process, the front surface and the back surface of the pole piece are respectively scanned and imaged.
9. A pole piece turnover detection platform is characterized in that the pole piece turnover detection platform is arranged based on the method for detecting pole piece turnover in any one of claims 1 to 8, and comprises a detection platform (1), a positioning mechanism (14) arranged on the detection platform (1), and a detection device (10) and an X-ray source (11) which are respectively arranged at two sides of the positioning mechanism (14); the pole piece can be fixed on the positioning mechanism (14).
10. The pole piece turnover detection platform of claim 9, wherein:
the detection device (10) is arranged on the detection platform (1) through a moving unit (13), and the moving unit (13) is provided with a driving mechanism (12);
the position of the moving unit (13) is adjustable under the driving of the driving mechanism (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111270427.XA CN113899766A (en) | 2021-10-29 | 2021-10-29 | Method for detecting pole piece turnover and pole piece turnover detection platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111270427.XA CN113899766A (en) | 2021-10-29 | 2021-10-29 | Method for detecting pole piece turnover and pole piece turnover detection platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113899766A true CN113899766A (en) | 2022-01-07 |
Family
ID=79027588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111270427.XA Pending CN113899766A (en) | 2021-10-29 | 2021-10-29 | Method for detecting pole piece turnover and pole piece turnover detection platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113899766A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115015254A (en) * | 2022-06-16 | 2022-09-06 | 上海潮乡源食品有限公司 | Meat quality inspection device based on machine vision and artificial intelligence |
| CN115829908A (en) * | 2022-04-18 | 2023-03-21 | 宁德时代新能源科技股份有限公司 | Method, device and system for detecting bevel of cathode pole piece of composite material belt |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109073571A (en) * | 2016-04-19 | 2018-12-21 | 东丽株式会社 | The continuous non-destructive detection method and continuous non-destructive testing apparatus of membrane-electrode assembly |
| US20210096089A1 (en) * | 2019-09-30 | 2021-04-01 | Honda Motor Co.,Ltd. | Inspection method for electrode structural body |
| JP2021071383A (en) * | 2019-10-31 | 2021-05-06 | ジャビス カンパニー リミテッド | Method for inspecting battery |
| CN112925034A (en) * | 2019-11-20 | 2021-06-08 | 日本株式会社日立高新技术科学 | X-ray inspection apparatus and X-ray inspection method |
| CN113203745A (en) * | 2021-07-05 | 2021-08-03 | 中航锂电科技有限公司 | Lamination device and pole piece folding detection method |
-
2021
- 2021-10-29 CN CN202111270427.XA patent/CN113899766A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109073571A (en) * | 2016-04-19 | 2018-12-21 | 东丽株式会社 | The continuous non-destructive detection method and continuous non-destructive testing apparatus of membrane-electrode assembly |
| US20210096089A1 (en) * | 2019-09-30 | 2021-04-01 | Honda Motor Co.,Ltd. | Inspection method for electrode structural body |
| JP2021071383A (en) * | 2019-10-31 | 2021-05-06 | ジャビス カンパニー リミテッド | Method for inspecting battery |
| CN112925034A (en) * | 2019-11-20 | 2021-06-08 | 日本株式会社日立高新技术科学 | X-ray inspection apparatus and X-ray inspection method |
| CN113203745A (en) * | 2021-07-05 | 2021-08-03 | 中航锂电科技有限公司 | Lamination device and pole piece folding detection method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115829908A (en) * | 2022-04-18 | 2023-03-21 | 宁德时代新能源科技股份有限公司 | Method, device and system for detecting bevel of cathode pole piece of composite material belt |
| WO2023202209A1 (en) * | 2022-04-18 | 2023-10-26 | 宁德时代新能源科技股份有限公司 | Method, apparatus, and system for performing folded corner detection on cathode sheet of composite material belt |
| CN115829908B (en) * | 2022-04-18 | 2023-12-22 | 宁德时代新能源科技股份有限公司 | Method, device and system for detecting folding angle of cathode pole piece of composite material belt |
| CN115015254A (en) * | 2022-06-16 | 2022-09-06 | 上海潮乡源食品有限公司 | Meat quality inspection device based on machine vision and artificial intelligence |
| CN115015254B (en) * | 2022-06-16 | 2023-02-10 | 上海潮乡源食品有限公司 | Meat quality inspection device based on machine vision and artificial intelligence |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102236815B1 (en) | Inspection device to detect missing or folding tab of battery electrode | |
| JP5813923B2 (en) | X-ray transmission inspection apparatus and X-ray transmission inspection method | |
| EP4382858B1 (en) | Gap measurement device and gap measurement method | |
| JP5564303B2 (en) | X-ray transmission inspection equipment | |
| CN113899766A (en) | Method for detecting pole piece turnover and pole piece turnover detection platform | |
| CN110658201B (en) | Optical detection mechanism of diaphragm | |
| JP2004022206A (en) | Battery inspection device | |
| JP2019067645A (en) | Battery inspection method | |
| KR20220087027A (en) | System for inspecting battery cell and method for inspecting battery cell | |
| WO2025000920A1 (en) | Battery inspection device | |
| KR102569188B1 (en) | An apparatus for inspecting secondary battery and the inspection method | |
| CN112666595B (en) | Proton beam measuring device and method | |
| WO2025001005A1 (en) | Battery inspection apparatus and method, and battery production device | |
| WO2024140558A1 (en) | Inspection apparatus and inspection method | |
| CN219224633U (en) | Battery detection device | |
| CN118843788A (en) | X-ray inspection device and X-ray inspection method | |
| KR102789700B1 (en) | Inspection apparatus and method for secondary battery | |
| CN222579324U (en) | An artifact elimination device for magnetic field deflection of industrial CT particle beam | |
| CN220671247U (en) | Battery detection device and battery production equipment | |
| CN119438254A (en) | Battery device detection apparatus | |
| US20240154194A1 (en) | Method for testing at least one battery cell stack with regard to the position of battery cell layers | |
| EP4488668A1 (en) | X-ray inspection device and x-ray inspection method | |
| JP3754767B2 (en) | Method and apparatus for detecting non-metallic inclusions in aluminum plate | |
| CN114441575B (en) | An imaging quality testing device for X-ray equipment | |
| WO2025001048A1 (en) | Test apparatus for tabs of battery cell, and battery cell production device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220107 |