CN211148419U - Device for rapidly detecting uniformity of wet film coating - Google Patents
Device for rapidly detecting uniformity of wet film coating Download PDFInfo
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- CN211148419U CN211148419U CN201922275306.9U CN201922275306U CN211148419U CN 211148419 U CN211148419 U CN 211148419U CN 201922275306 U CN201922275306 U CN 201922275306U CN 211148419 U CN211148419 U CN 211148419U
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- 239000007888 film coating Substances 0.000 title claims abstract description 10
- 238000009501 film coating Methods 0.000 title claims abstract description 10
- 238000003384 imaging method Methods 0.000 claims abstract description 37
- 238000000576 coating method Methods 0.000 claims abstract description 32
- 238000004458 analytical method Methods 0.000 claims abstract description 27
- 239000011248 coating agent Substances 0.000 claims abstract description 19
- 238000001514 detection method Methods 0.000 claims abstract description 18
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910001416 lithium ion Inorganic materials 0.000 claims abstract description 13
- 238000005516 engineering process Methods 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 6
- 238000012031 short term test Methods 0.000 claims description 5
- 238000003331 infrared imaging Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims 5
- 238000010923 batch production Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 7
- 230000007547 defect Effects 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Images
Abstract
The utility model discloses a device for rapidly detecting the uniformity of a wet film coating, which is used for detecting the uniformity of the wet film in the coating process of a lithium ion battery pole piece, and comprises a platform system, a detection system and an analysis system, wherein the platform system is used for providing a horizontal reference and coating the pole piece on the platform system; the detection system is positioned above the platform system and used for acquiring a wet film image in the pole piece coating process; the detection system comprises a light source system and an imaging system connected with the light source system; the analysis system is connected with the imaging system and used for analyzing the uniformity degree of the wet film image. The device can be used for rapidly detecting the uniformity of the wet film in the lithium ion battery coating process on site in the coating process, rapidly analyzing, judging and feeding back the uniformity degree and fluctuation reasons, has good timeliness, is low in price, and is suitable for batch production.
Description
Technical Field
The utility model relates to a lithium ion battery technical field, more specifically are a device that is arranged in the wet membrane coating homogeneity of short-term test of lithium ion battery pole piece preparation coating technology.
Background
In the production of lithium ion batteries, the high uniformity of the pole piece is a prerequisite for the performance of the lithium ion battery. If the quality of the pole piece is not well controlled, the thickness of the prepared pole piece is not uniform, and the quality of the whole battery is influenced finally. The quality of the pole piece is fundamentally influenced by the uniformity of the wet film during coating, and the wet film with good uniformity is easy to obtain the pole piece with good quality finally.
At present, lithium ion battery manufacturers generally adopt two ways to control or detect the uniformity of a coated wet film. The first method starts from coating equipment, strictly controls the coating gap and needs equipment accessories with very good long-term stability; however, along with the frequent use or the error use of the equipment, and under the conditions of equipment abrasion and the like caused by unknown conditions, the quality of the electrode plate prepared by the equipment has great fluctuation, and the electrode plate can be detected only by combining a subsequent process, so that the timeliness is poor. Secondly, adopting more advanced laser thickness measuring equipment to quickly obtain a thickness curve of the wet film so as to judge the uniformity of the wet film; however, the equipment is expensive and not suitable for large-batch purchase and use, and the method cannot rapidly judge and analyze the uniformity degree of the wet film on site.
Therefore, the development of a device capable of rapidly detecting the uniformity of a wet film in the coating process of a lithium ion battery pole piece is urgently needed in the field, and meanwhile, the device is relatively low in price and can effectively improve the uniformity of the battery pole piece.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a device of short-term test wet film coating homogeneity has solved the poor problem of detection technology timeliness.
In order to realize the above-mentioned purpose, the utility model provides a pair of device of short-term test wet film coating homogeneity for the wet film homogeneity detects in the lithium ion battery pole piece coating process, include:
the platform system is used for providing a horizontal reference and coating the pole piece on the platform system;
the detection system is positioned above the platform system and is used for acquiring a wet film image in the pole piece coating process; the detection system comprises a light source system and an imaging system connected with the light source system; and
and the analysis system is used for analyzing the uniformity degree of the wet film image and is connected with the imaging system.
Further, the light source system is connected with the imaging system through a rotatable corner system, and the light source system and the imaging system are respectively positioned on two sides of the corner system.
Further, the corner system can realize the steering of any angle between 0 and 180 degrees, and the light source system and the imaging system form an angle between 0 and 180 degrees by taking the corner system as a vertex.
Preferably, the corner system is a rotatable manual corner device and/or an automatic corner device.
Further, the analysis system is connected with the imaging system through a digital transmission technology.
Preferably, the digital transmission technology is one or more of cable, wireless WiFi and bluetooth.
Preferably, the light source system is a point light source and/or a line light source capable of providing parallel light.
Preferably, the length of the luminous strip of the linear light source is 0.1-2 meters.
Preferably, the imaging system employs visible light imaging and/or infrared imaging.
Further, the analysis system can perform uniformity analysis and feedback on the image with an error of 2-50 μm.
The utility model provides a pair of device of short-term test wet film coating homogeneity has following beneficial effect:
1. the platform system provides a better horizontal reference;
2. the method can rapidly carry out the detection of the uniformity of the wet film in the coating process of the lithium ion battery on site in the coating process, and rapidly analyze, judge and feed back the uniformity degree and the fluctuation reason, and has good timeliness;
3. the equipment is low in price and suitable for batch use;
4. the wet film with good uniformity can easily obtain the pole piece with good quality, and the quality of the pole piece of the lithium ion battery can be improved by quickly detecting the uniformity of the wet film.
Drawings
FIG. 1 is a schematic structural diagram of an apparatus for rapidly detecting the coating uniformity of a wet film according to an embodiment.
In the figure:
1. detection system 11, light source system 12, imaging system 13, corner system 2 and platform system
3. An analysis system.
Detailed Description
The technical solutions of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, so as to facilitate the understanding and implementation of the technical solutions by those skilled in the art.
A device for rapidly detecting the uniformity of a wet film coating is provided, which is added with a set of detection system device for rapidly detecting the uniformity of a wet film compared with the prior art and is used for detecting the uniformity of the wet film in the coating process of a lithium ion battery pole piece. The device for rapidly detecting the coating uniformity of the wet film comprises a detection system 1, a platform system 2 and an analysis system 3.
The detection system 1 is used for collecting wet film information in a pole piece coating process and comprises a light source system 11, an imaging system 12 and a corner system 13, wherein the light source system 11 and the imaging system 12 are connected through the corner system 13 capable of rotating, the light source system 11 and the imaging system 12 are located on two sides of the corner system 13, the light source system 11 and the imaging system 12 form an angle of 0-180 degrees by taking the corner system 13 as a vertex, and the corner system can rotate to change the angle. The light source system provides a point light source and/or a linear light source of parallel light, wherein the length of the linear light source is 0.1-2 meters. The imaging system employs visible light imaging or infrared imaging techniques.
The working principle of the detection device is essentially that CCD (Charge coupled devices) imaging technology is used, the energy distribution situation of the light field on the whole focal plane of the wet film is collected and imaged, imaging data are transmitted to the analysis system 3, and the fluctuation of the uniformity of the wet film is judged through the fluctuation of the detected imaging data.
Particularly, through manual or automatic adjustment corner system 13, make light source system 11 and imaging system 12 that corner system 13 both sides are connected respectively form specific contained angle, when guaranteeing that the even parallel light that light source system 11 provided shines on the wet film surface on platform system 2, the wet film that awaits measuring is in parallel light path, the wet film assembles parallel light energy on its main diffraction level focal plane, and imaging system 12 can accurately correspond to main diffraction level focal plane position, light intensity distribution information on the accurate wet film focal plane of catching is converted into the signal of telecommunication (imaging data), transmit the data that form for analysis system 3 and analyze again.
The analysis system 3 analyzes and processes the data and executes subsequent commands according to the analysis result. For example, the analysis system 3 may store an image database of all types of defects, compare the received data with information in the database, and determine what type of defect the data is when the comparison result is smaller, and generate corresponding prompt information. Alternatively, the analysis system 3 stores image data of a qualified product, sets a difference fluctuation range, and when the difference fluctuation range is exceeded, it is possible to determine that a defect occurs and generate corresponding prompt information.
The analysis system 3 can rapidly perform uniformity analysis and feedback with the error of 1-100 μm on the image transmitted by the imaging system.
Example 1
The light source system 11 in the detection system 1 selects a light source with a length of 0.5m, firstly, the light source system 11 is arranged above the coater device, the coated wet film substrate is arranged above the platform system 2, and the imaging system 12 adopting visible light is arranged at an angle position of 135 degrees by adjusting the corner system 13, namely, the light source system 11 and the imaging system 12 form an angle of 135 degrees by taking the corner system 13 as a vertex; the imaging system 12 is connected to the analysis system 3 by a cable.
The analysis system 3 stores the data range of the wet film uniformity image which meets the requirement, for example, the height difference of each point on the surface of the wet film is within 5 μm, and the image is qualified. And (3) starting the coating machine, when the wet film passes through the platform system 2, rapidly acquiring an image of the uniform degree of the wet film by the imaging system 12, transmitting the image information to the analysis system 3 through a cable, processing the image information by the analysis system 3 to obtain data with the height difference within 5 micrometers, judging the image information to be qualified, and when the height difference of the image data analyzed to the edge position of the base material is greater than 10 micrometers, judging the image information to be unqualified, and giving out unqualified prompt information. After analysis, the reason is influenced by large particles in the slurry, after the slurry is quickly treated, the treated wet film is placed on the platform system 2 again for detection, the detection result is qualified, and finally the pole piece which meets the requirement and is uniformly coated by the wet film is obtained. The device can carry out wet membrane homogeneity on-the-spot fast and detect and rapid analysis judges undulant reason at the coating in-process, has fine ageing.
The inventive concept is explained in detail herein using specific examples, and the above description of the embodiments is only used to help understand the core idea of the present invention. It should be understood that any obvious modifications, equivalents and other improvements made by those skilled in the art without departing from the spirit of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a device of short-term test wet film coating homogeneity for the wet film homogeneity detects among the lithium ion battery pole piece coating process, its characterized in that includes:
the platform system is used for providing a horizontal reference and coating the pole piece on the platform system;
the detection system is positioned above the platform system and is used for acquiring a wet film image in the pole piece coating process; the detection system comprises a light source system and an imaging system connected with the light source system; and
and the analysis system is used for analyzing the uniformity degree of the wet film image and is communicated with the imaging system.
2. The apparatus for rapidly detecting the coating uniformity of a wet film according to claim 1, wherein said light source system is connected to said imaging system through a rotatable corner system, and said light source system and said imaging system are respectively located at two sides of said corner system.
3. The apparatus for rapidly detecting the coating uniformity of a wet film according to claim 2, wherein the rotation angle system can realize the rotation direction of any angle between 0-180 degrees, and the light source system and the imaging system form an angle between 0-180 degrees by taking the rotation angle system as a vertex.
4. The apparatus for rapidly testing the uniformity of a wet film coating according to claim 2, wherein said turning system is a rotatable manual turning device and/or an automatic turning device.
5. The apparatus for rapidly testing the uniformity of a wet film coating according to claim 1, wherein said analysis system is coupled to said imaging system via digital transmission.
6. The apparatus for rapidly detecting the coating uniformity of a wet film according to claim 5, wherein the digital transmission technology is one or more of cable, wireless WiFi and Bluetooth.
7. The apparatus for rapidly testing the coating uniformity of a wet film according to claim 1, wherein the light source system is a point light source and/or a line light source capable of providing parallel light.
8. The apparatus for rapidly testing the coating uniformity of a wet film according to claim 7, wherein the length of the luminous band of said linear light source is 0.1-2 m.
9. The apparatus for rapidly detecting the coating uniformity of a wet film according to claim 1, wherein said imaging system employs visible light imaging and/or infrared imaging.
10. The apparatus for rapidly testing the coating uniformity of a wet film according to claim 1, wherein said analysis system is capable of performing uniformity analysis and feedback on the image with an error of 1 μm-100 μm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2018222716597 | 2018-12-29 | ||
| CN201822271659 | 2018-12-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211148419U true CN211148419U (en) | 2020-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922275306.9U Active CN211148419U (en) | 2018-12-29 | 2019-12-17 | Device for rapidly detecting uniformity of wet film coating |
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| CN (1) | CN211148419U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111982901A (en) * | 2020-08-07 | 2020-11-24 | 湖南中环机械涂装有限公司 | Intelligent detection method for spraying effect of mechanical equipment |
-
2019
- 2019-12-17 CN CN201922275306.9U patent/CN211148419U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111982901A (en) * | 2020-08-07 | 2020-11-24 | 湖南中环机械涂装有限公司 | Intelligent detection method for spraying effect of mechanical equipment |
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| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20210219 Address after: 2201, building 1, COFCO Chuangxin R & D center, 69 Xingdong community, Xin'an street, Bao'an District, Shenzhen City, Guangdong Province Patentee after: Chuangpus (Shenzhen) New Energy Technology Co.,Ltd. Address before: 100193 01-108-1, 1st floor, building 10, Zhongguancun Software Park, 8 Dongbeiwang West Road, Haidian District, Beijing Patentee before: BEIJING LEHUA LITHIUM ENERGY TECHNOLOGY Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 2201, building 1, COFCO Chuangxin R & D center, 69 Xingdong community, Xin'an street, Bao'an District, Shenzhen City, Guangdong Province Patentee after: Chuangpus (Shenzhen) New Energy Technology Group Co.,Ltd. Address before: 2201, building 1, COFCO Chuangxin R & D center, 69 Xingdong community, Xin'an street, Bao'an District, Shenzhen City, Guangdong Province Patentee before: Chuangpus (Shenzhen) New Energy Technology Co.,Ltd. |
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Effective date of registration: 20230707 Address after: No. 1 Yingzhou 1st Street, Gaozhuang Town, Jinghe New City, Xixian New District, Xi'an City, Shaanxi Province, 712000 Patentee after: Shaanxi chuangpus New Energy Technology Co.,Ltd. Address before: 2201, building 1, COFCO Chuangxin R & D center, 69 Xingdong community, Xin'an street, Bao'an District, Shenzhen City, Guangdong Province Patentee before: Chuangpus (Shenzhen) New Energy Technology Group Co.,Ltd. |
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