CN113156528B - Lug turnover detection device and detection method - Google Patents
Lug turnover detection device and detection method Download PDFInfo
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- CN113156528B CN113156528B CN202110254448.6A CN202110254448A CN113156528B CN 113156528 B CN113156528 B CN 113156528B CN 202110254448 A CN202110254448 A CN 202110254448A CN 113156528 B CN113156528 B CN 113156528B
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- 238000001514 detection method Methods 0.000 title claims abstract description 97
- 230000007306 turnover Effects 0.000 title claims abstract description 31
- 238000007493 shaping process Methods 0.000 claims abstract description 36
- 238000000926 separation method Methods 0.000 claims abstract description 29
- 238000000034 method Methods 0.000 claims description 21
- 230000008569 process Effects 0.000 claims description 17
- 238000004804 winding Methods 0.000 claims description 8
- 238000004140 cleaning Methods 0.000 claims description 7
- 238000003475 lamination Methods 0.000 claims description 4
- 210000004027 cell Anatomy 0.000 description 30
- 238000010586 diagram Methods 0.000 description 4
- 210000005069 ears Anatomy 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000005056 cell body Anatomy 0.000 description 1
- 238000005108 dry cleaning Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000005405 multipole Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V8/00—Prospecting or detecting by optical means
- G01V8/10—Detecting, e.g. by using light barriers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0404—Machines for assembling batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/005—Devices for making primary cells
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N2021/0106—General arrangement of respective parts
- G01N2021/0112—Apparatus in one mechanical, optical or electronic block
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Immunology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Pathology (AREA)
- General Chemical & Material Sciences (AREA)
- Electrochemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Biochemistry (AREA)
- Geophysics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Secondary Cells (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The application discloses a tab turnover detection device and a detection method. The tab turns over a detection device and includes: the shaping module is used for carrying out initial dislocation shaping on the lugs of the battery cell to form a dislocation area, the marking module is used for carrying out color marking on the dislocation area to form continuous color blocks, the shaping module is used for carrying out secondary dislocation shaping on the dislocation area to enable the continuous color blocks to be changed into separation color blocks, and the detection module is used for carrying out folding detection on the separation color blocks to obtain folding detection results. The lug is color-marked through the shaping module and the marking module, and the separation color block is formed, so that the detection module can conveniently detect whether the lug is folded or not according to the separation color block, the identification accuracy is improved, and the omission factor is reduced.
Description
Technical Field
The application relates to the technical field of battery manufacturing, in particular to a tab turnover detection device and a detection method.
Background
In the battery production process, taking a lithium battery as an example, a pole lug is formed through a die cutting process, the pole lug is easy to fold in the die cutting process, the winding process or the transferring process, and the pole lug is difficult to detect and identify after a battery core is formed, but the folding of the pole lug can lead to short circuit, lithium precipitation and the like, so that serious potential safety hazards exist. In the related art, the method for preventing the tab from turning over is to prevent and treat the tab before the winding process, mainly by using the reinforcing ribs and the support plates, and the tab turning over can not be completely eradicated. Meanwhile, the detection of the turnover of the tab is also to detect before winding or manually and visually detect after winding, so that the risk of missing detection is great.
Disclosure of Invention
The present application aims to solve at least one of the technical problems existing in the prior art. Therefore, the application provides the tab turnover detection device which can automatically identify whether the tab of the battery core is turned or not, and the identification accuracy is high.
According to an embodiment of the first aspect of the present application, a tab fold detection device includes: the shaping module is used for carrying out initial dislocation shaping on the lugs of the battery cell to form a dislocation area, the marking module is used for carrying out color marking on the dislocation area to form continuous color blocks, the shaping module is used for carrying out secondary dislocation shaping on the dislocation area to enable the continuous color blocks to be changed into separation color blocks, and the detection module is used for carrying out folding detection on the separation color blocks to obtain folding detection results.
The tab turnover detection device provided by the embodiment of the application has at least the following beneficial effects: the lug is color-marked through the shaping module and the marking module, and the separation color block is formed, so that the detection module can conveniently detect whether the lug is folded or not according to the separation color block, the identification accuracy is improved, and the omission factor is reduced.
According to some embodiments of the application, further comprising: and the cleaning module is used for removing the color marks.
According to some embodiments of the application, further comprising: and the positioning module is used for positioning the battery cell and fixing the battery cell.
According to some embodiments of the application, the detection module comprises a camera for acquiring image information of the separate color patches.
According to some embodiments of the application, the detection module further comprises a processor, the processor is connected with the camera, and the processor is used for obtaining a turnover detection result according to the image information.
According to a second aspect of the present application, a tab fold detection method includes: initial dislocation shaping is carried out on the electrode lugs of the battery core to form a dislocation area; color marking is carried out on the dislocation area, and continuous color blocks are formed on the dislocation area; performing secondary dislocation shaping on the dislocation area to change the continuous color blocks into separated color blocks; and carrying out folding detection on the separated color blocks to obtain a folding detection result.
According to some embodiments of the application, further comprising: and removing the separation color lump.
According to some embodiments of the application, the cells are formed by a winding process or a lamination process.
According to some embodiments of the present application, the step of performing a folding detection on the separated color patches to obtain a folding detection result specifically includes: and carrying out image recognition on the separated color blocks to obtain a turnover detection result.
According to some embodiments of the present application, the step of performing a folding detection on the separated color patches to obtain a folding detection result specifically includes: and carrying out folding detection on the separated color blocks to obtain the number of the separated color blocks and the distance between the separated color blocks, and obtaining a folding detection result according to the number and the distance.
Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.
Drawings
The application is further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic diagram of a tab fold detection device according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a cell misalignment region according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a continuous color block of a battery cell according to an embodiment of the present application;
FIG. 4 is a schematic diagram of a cell separation color block according to an embodiment of the present application;
Fig. 5 is a flowchart of a tab fold detection method according to an embodiment of the present application.
Reference numerals:
shaping module 110, marking module 120, detecting module 130, cleaning module 140, positioning module 150;
cell body 210, dislocation region 220, continuous color patch 230, and split color patch 240.
Detailed Description
Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the application.
In the description of the present application, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present application can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
Referring to fig. 1 to 4, the present application provides a tab turnover detecting device, which includes: the shaping module 110, the marking module 120 and the detecting module 130, the shaping module 110 is used for carrying out initial dislocation shaping on the lugs of the battery core to form a dislocation region 220, the marking module 120 is used for carrying out color marking on the dislocation region 220 to form a continuous color block 230 on the dislocation region 220, the shaping module 110 is used for carrying out secondary dislocation shaping on the dislocation region 220 to enable the continuous color block 230 to be changed into a separation color block 240, and the detecting module 130 is used for carrying out folding detection on the separation color block 240 to obtain a folding detection result.
In the exemplary embodiment, when the battery cell is a multi-pole ear battery cell, after the pole piece is wound or laminated to form the battery cell, a plurality of positive pole ears and a plurality of negative pole ears exist on one battery cell, and in the subsequent process flow, the positive pole ears are connected with each other to form the positive pole of the battery cell, and the negative pole ears are connected with each other to form the negative pole of the battery cell. Before connection, the positive electrode tab and the negative electrode tab of the battery core need to be detected, namely, each tab on the battery core is detected, so that the tab is ensured not to be folded, and poor contact of a plurality of positive electrode tabs or a plurality of negative electrode tabs during interconnection is prevented. The battery cell is characterized in that a plurality of positive electrode lugs or a plurality of negative electrode lugs of the battery cell are parallel to each other and are distributed at intervals under the condition of unconnected, and different positive electrode lugs or negative electrode lugs are not contacted with each other, but at the moment, the plurality of positive electrode lugs or the plurality of negative electrode lugs can be mutually shielded, so that the detection of turnover of the lugs is inconvenient.
The tabs detected by the tab turnover detection device are the same group of tabs which need to be connected with each other, such as a plurality of positive electrode tabs or a plurality of negative electrode tabs, and the positions of the positive electrode tabs and the negative electrode tabs on the battery core can be set arbitrarily, for example, the positive electrode tabs and the negative electrode tabs are arranged on the same side of the battery core, or the positive electrode tabs are arranged on the top of the battery core, and the negative electrode tabs are arranged on the bottom of the battery core. In this embodiment, the positive electrode tab and the negative electrode tab are disposed on the same side of the battery cell, and the detection flow of the tab folding detection device is the same when the positive electrode tab or the negative electrode tab is detected respectively.
The battery cell includes a battery cell main body 210, a positive electrode tab and a negative electrode tab, the positive electrode tab is shaped in a dislocation manner by the shaping module 110, so that a plurality of positive electrode tabs are mutually attached, and the tail end areas of the positive electrode tabs are exposed on the detection surface to form a dislocation area 220 after the dislocation shaping. The size of the dislocation region 220 is related to the inclination degree of the positive electrode tab relative to the battery core main body 210 during dislocation shaping, and the different inclination degrees can lead to different areas of the exposed positive electrode tab terminal, and the inclination degree can be set at will according to the type of the positive electrode tab and the subsequent detection requirement.
The misalignment area 220 is color-coded by the marking module 120 to form a continuous color patch 230 on the misalignment area 220. When color marking is performed, different marking materials can be selected according to different subsequent detection modes, so that the detection module 130 can accurately identify the color marking. For example, when detection is performed by using an image recognition method, a color with a larger color difference from the positive electrode tab is selected, so that the collected image data can clearly distinguish the color mark on the positive electrode tab. When a photoelectric sensor or the like is used to actively emit a detection signal and detect the detection signal according to the received reflection signal, the detection module 130 can also recognize the color mark by marking the detection signal with a material having a larger difference from the absorption rate of the positive electrode tab according to the absorption rate of the positive electrode tab.
The shift region 220 is subjected to secondary shift shaping by the shaping module 110, so that the continuous color block 230 becomes the separation color block 240. By performing the offset shaping again, the degree of inclination of the positive electrode tab is increased, and the portion of the positive electrode tab, which is in the overlapping region and has no color mark, is exposed, whereby the continuous patch 230 is divided into the separate patches 240. When all the positive electrode tabs are not folded, the shape and the size of the separation color block 240 are fixed in a regular shape, and when the positive electrode tabs are folded, the shape, the size or the number of the separation color blocks 240 are changed. The detection module 130 detects the separation color block 240 and compares the detection data with the detection data in the state of not being folded, so as to detect whether the positive electrode tab of the current battery core is folded or not. The shaping module 110 can simultaneously shape the positive electrode tab and the negative electrode tab of the battery core, and the detecting module 130 can also simultaneously detect the positive electrode tab and the negative electrode tab, so as to improve the detecting efficiency. In some other embodiments, the shaping module 110 and the detecting module 130 may also detect only the positive tab or the negative tab in one detection.
Some embodiments, the tab turnover detection device further comprises: the cleaning module 140, the cleaning module 140 is used for removing the color mark. The cleaning module 140 may remove the color mark using dry cleaning or wet cleaning to ensure that the color mark does not affect the subsequent process flow.
Some embodiments, the tab turnover detection device further comprises: the positioning module 150, the positioning module 150 is used for positioning the battery cell and fixing the battery cell. In the process of shaping the battery cell by the shaping module 110, the battery cell may be moved due to the tensile force of the positive electrode tab, so that the problem of inaccurate detection result is caused, and therefore, the positioning module 150 is used for fixing the position of the battery cell, thereby improving the detection accuracy.
In some embodiments, the detection module 130 includes a camera for capturing image information of the separation color patch 240. The number of the separated color blocks 240 and the intervals among different color blocks can be intuitively obtained through the image information acquired by the camera, and the judgment can be carried out in a subsequent image processing or manual identification mode.
In some embodiments, the detection module 130 further includes a processor, where the processor is connected to the camera, and the processor is configured to obtain a turnover detection result according to the image information. The processor is provided with a preset processing program, and the turnover detection result can be automatically and accurately obtained by processing the image information of the separation color block 240 collected by the camera and comparing the image information with the image information collected under normal conditions.
Referring to fig. 5, the present application provides a tab turnover detection method, which includes:
And 310, performing initial dislocation shaping on the electrode lugs of the battery core to form a dislocation region.
And 320, color marking the dislocation area, and forming continuous color blocks on the dislocation area.
And 330, performing secondary dislocation shaping on the dislocation area to change the continuous color block into a separated color block.
340, Performing folding detection on the separated color lump to obtain a folding detection result.
The tab turnover detection method is implemented based on the tab turnover detection device, and the detection principle is the same and is not described in detail herein.
In some embodiments, the tab turnover detection method of the present application further includes: the separation patch 240 is removed. After the detection and the turnover detection result are obtained, the tab is cleaned, and the color mark is removed, so that the subsequent process flow treatment is facilitated. In some other embodiments, the color mark may be retained without affecting the electrical parameters of the cell, or removed in a subsequent process flow.
In some embodiments, the cells are formed by a winding process or a lamination process. According to the tab turnover detection method disclosed by the application, the tab turnover caused in the front process can be detected by detecting after the battery cell is formed by the pole piece through the winding or lamination process, the process flow is in the rear section of the whole battery cell manufacturing flow, a plurality of positive pole tabs are connected with one another to form the positive pole of the battery cell, a plurality of negative pole tabs are connected with one another to form the negative pole of the battery cell, the problem of tab turnover can not be continuously generated, and the yield of finished battery cell products can be improved.
In some embodiments, the step of performing the folding detection on the separation color lump 240 to obtain a folding detection result specifically includes: and carrying out image recognition on the separation color lump 240 to obtain a turnover detection result. Through the image recognition technology, the images of the separation color blocks 240 are collected and compared with the separation color blocks 240 collected in a normal state, whether the current image is normal or not can be distinguished, and whether the lug is folded or not is judged. In some other embodiments, a photoelectric sensor may be used to detect the number of color patches or the width of the color patches based on the collected reflected light signal, and determine whether the separated color patches 240 are normal.
In some embodiments, the step of performing the folding detection on the separation color lump 240 to obtain a folding detection result specifically includes: the split color patches 240 are subjected to turnover detection to obtain the number of the split color patches 240 and the distance between the split color patches 240, and a turnover detection result is obtained according to the number and the distance. Whether the lug is folded or not can be judged by detecting the number of the separation color blocks 240 and the distance between the separation color blocks 240, and the specific position where the folded lug is generated can be judged by measuring the distance. The number of separate color patches 240 and their spacing can be selected according to practical needs, for example, using image recognition or a photosensor.
In the description of the present application, reference is made to the description of the terms "some embodiments," "examples," "illustrative embodiments," etc., meaning that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The embodiments of the present application have been described in detail with reference to the accompanying drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present application. Furthermore, embodiments of the application and features of the embodiments may be combined with each other without conflict.
Claims (6)
1. Lug turns over a detection device, its characterized in that includes:
the shaping module is used for carrying out initial dislocation shaping on the lugs of the battery core, so that the lugs are mutually attached, and the tail end areas of the lugs are exposed on the detection surface to form dislocation areas;
the marking module is used for carrying out color marking on the dislocation area, forming continuous color blocks on the dislocation area, carrying out secondary dislocation shaping on the dislocation area by the shaping module, increasing the inclination degree of the tab, exposing the part, which is in the overlapping area and is not provided with the color mark, of the tab, and changing the continuous color blocks into separated color blocks;
The detection module is used for carrying out turnover detection on the separation color lump to obtain a turnover detection result;
The detection module comprises a camera, wherein the camera is used for acquiring the image information of the separated color blocks, and the number of the separated color blocks and the intervals among different color blocks are intuitively obtained through the image information acquired by the camera;
The detection module further comprises a processor, the processor is connected with the camera, and the processor is used for obtaining a turnover detection result according to the image information; the method comprises the following steps: whether the lug is folded or not is judged by detecting the number of the separated color blocks, and the specific position of the folded lug is judged by measuring the distance between the separated color blocks.
2. The tab fold-over detection device of claim 1, further comprising: and the cleaning module is used for removing the color marks.
3. The tab fold-over detection device of claim 1, further comprising: and the positioning module is used for positioning the battery cell and fixing the battery cell.
4. The tab turnover detection method is characterized by comprising the following steps of:
initial dislocation shaping is carried out on the lugs of the battery core, so that a plurality of lugs are mutually attached, and the tail end areas of the lugs are exposed on the detection surface to form dislocation areas;
Color marking is carried out on the dislocation area, and continuous color blocks are formed on the dislocation area;
Performing secondary dislocation shaping on the dislocation region, and increasing the inclination degree of the tab, so that the part without the color mark in the overlapping region in the tab is exposed, and the continuous color block is changed into a separated color block;
The separation color lump is subjected to folding detection to obtain a folding detection result, and the method specifically comprises the following steps: the camera acquires the image information of the separated color blocks, and intuitively obtains the number of the separated color blocks and the intervals among different color blocks; the processor is connected with the camera, the processor judges whether the lug is folded or not through detecting the quantity of the separated color blocks, and judges the specific position of the folded lug through measuring the distance between the separated color blocks.
5. The tab fold-over detection method of claim 4, further comprising: and removing the separation color lump.
6. The tab fold-over detection method of claim 4, wherein the electrical core is formed by a winding process or a lamination process.
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| CN202110254448.6A CN113156528B (en) | 2021-03-09 | 2021-03-09 | Lug turnover detection device and detection method |
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| CN202110254448.6A CN113156528B (en) | 2021-03-09 | 2021-03-09 | Lug turnover detection device and detection method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116349021A (en) | 2021-10-27 | 2023-06-27 | 宁德时代新能源科技股份有限公司 | Battery tab detection method, device and storage medium |
| CN115839959A (en) * | 2022-11-03 | 2023-03-24 | 宁德时代新能源科技股份有限公司 | Lug detection system and lug detection method |
| CN115797346B (en) * | 2023-02-06 | 2023-06-27 | 江苏时代新能源科技有限公司 | Tab state detection method, device, computer equipment and storage medium |
| CN116037731B (en) * | 2023-03-31 | 2023-07-28 | 江苏时代新能源科技有限公司 | Lug turnover improving device and method and battery production equipment |
| CN117589792B (en) * | 2024-01-18 | 2024-05-10 | 江苏时代新能源科技有限公司 | Ending position detection method, ending position detection device, computer equipment and storage medium |
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| CN102867212A (en) * | 2012-09-26 | 2013-01-09 | 成都理工大学 | Answer sheet quantity counting method implemented by portable device |
| CN110132980A (en) * | 2019-05-13 | 2019-08-16 | 无锡先导智能装备股份有限公司 | Battery testing system, battery manufacturing equipment and battery detection method |
| CN110530338A (en) * | 2019-09-18 | 2019-12-03 | 东莞塔菲尔新能源科技有限公司 | A kind of detection method and device that tab folds |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102867212A (en) * | 2012-09-26 | 2013-01-09 | 成都理工大学 | Answer sheet quantity counting method implemented by portable device |
| CN110132980A (en) * | 2019-05-13 | 2019-08-16 | 无锡先导智能装备股份有限公司 | Battery testing system, battery manufacturing equipment and battery detection method |
| CN110530338A (en) * | 2019-09-18 | 2019-12-03 | 东莞塔菲尔新能源科技有限公司 | A kind of detection method and device that tab folds |
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