CN114923930A - Detection device and method for detecting lithium deposition condition of battery pole piece by using line scanning camera - Google Patents
Detection device and method for detecting lithium deposition condition of battery pole piece by using line scanning camera Download PDFInfo
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- CN114923930A CN114923930A CN202210342625.0A CN202210342625A CN114923930A CN 114923930 A CN114923930 A CN 114923930A CN 202210342625 A CN202210342625 A CN 202210342625A CN 114923930 A CN114923930 A CN 114923930A
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- pole piece
- battery pole
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- 238000001514 detection method Methods 0.000 title claims abstract description 56
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 35
- 230000008021 deposition Effects 0.000 title claims description 8
- 238000000034 method Methods 0.000 title abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 18
- 238000004458 analytical method Methods 0.000 claims abstract description 17
- 238000001556 precipitation Methods 0.000 claims abstract description 9
- 230000007547 defect Effects 0.000 claims description 9
- 230000001681 protective effect Effects 0.000 claims description 9
- 238000011179 visual inspection Methods 0.000 claims description 2
- 230000000007 visual effect Effects 0.000 abstract description 7
- 238000010408 sweeping Methods 0.000 abstract description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 5
- 229910001416 lithium ion Inorganic materials 0.000 description 5
- 238000009792 diffusion process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003446 memory effect Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- 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
- G01N21/956—Inspecting patterns on the surface of objects
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- 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
- G01N21/8806—Specially adapted optical and illumination features
-
- 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
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- 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)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
The invention discloses a detection device and a method for detecting lithium precipitation condition of a battery pole piece by using a line scanning camera, wherein the detection device comprises: camera, coaxial light source, X axle mobile device and material loading platform are swept to the line, and X axle mobile device sets up on material loading platform, and the camera is swept to the line sets up on X axle mobile device with coaxial light source relative from top to bottom, and the camera is swept to the line is located the top of coaxial light source, and the camera is swept to the line all is located the top of material loading platform with coaxial light source, and the camera is swept to the line shooting direction of sweeping the camera is for facing material loading platform. According to the invention, the line scanning camera is adopted to collect the image of the battery pole piece, so that the lithium analysis condition of the battery pole piece is detected in a visual detection mode, compared with the existing manual naked eye judgment mode, a large amount of energy and time are not required to be consumed, and the accuracy of the lithium analysis condition detection is improved.
Description
Technical Field
The invention relates to the technical field of lithium battery detection, in particular to a detection device and a detection method for detecting lithium deposition conditions of a battery pole piece by using a line scanning camera.
Background
A lithium ion battery is a secondary battery that operates by lithium ions moving back and forth between a positive plate and a negative plate. Lithium ion batteries are widely used because of their advantages of environmental friendliness, long service life, no memory effect, high specific energy, high specific power, etc. However, in the lithium ion battery, metal lithium may be precipitated on the surface of the negative electrode plate during the design and manufacturing process or the unreasonable charging and discharging process, and this phenomenon is called lithium precipitation. The lithium analysis has a great influence on the service life and safety of the lithium ion battery, so the lithium analysis condition of the pole piece needs to be detected.
At present, the most common method for detecting the lithium analysis condition of the pole piece is judgment by artificial naked eyes, and the judgment mode by the artificial naked eyes has the following defects: a great deal of energy and time are consumed, and in addition, after the eyes are exhausted manually, the condition of false detection and missed detection is easy to occur, so that the detection accuracy is influenced.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a detection device and a detection method for detecting the lithium precipitation condition of a battery pole piece by using a line scanning camera, which can solve the technical problems.
(II) technical scheme
In order to solve the above technical problems, the present invention provides the following technical solutions: a detection device for detecting the lithium precipitation condition of a battery pole piece by using a line scanning camera comprises: camera, coaxial light source, X axle mobile device and material loading platform are swept to the line, and X axle mobile device sets up on material loading platform, and the camera is swept to the line sets up on X axle mobile device with coaxial light source relatively from top to bottom, and the camera is swept to the line is located the top of coaxial light source, and the camera is swept to the line all is located the top of material loading platform with coaxial light source, and the camera is swept to the line shooting direction of sweeping the camera for facing material loading platform.
Preferably, the detection device further comprises an upright column and a fixing plate, the upright column is arranged on the feeding platform, the fixing plate is arranged on the upright column, and the X-axis moving device is arranged on the fixing plate.
Preferably, the X-axis moving device comprises a servo motor, a first screw rod and a traverse plate, the servo motor is arranged on a fixed plate, the servo motor is connected with the first screw rod, the fixed plate is provided with a slide rail, one side of the traverse plate is connected with the first screw rod, and one side of the traverse plate is arranged on the slide rail in a sliding manner.
Preferably, the detection device further comprises a rotating handle, a second screw rod and a lifting plate, the second screw rod is arranged on the other side of the transverse moving plate, the rotating handle is arranged at the top of the second screw rod, the second screw rod is connected with the lifting plate, the lifting plate is arranged on the other side of the transverse moving plate in a sliding mode, and the line scanning camera and the coaxial light source are arranged on the lifting plate vertically and oppositely.
Preferably, the lower extreme of camera is swept to line is equipped with the camera lens, and coaxial light source is including being the beam splitter of slope setting and being the diffuser plate of vertical setting, and the vertical orientation beam splitter of camera lens.
Preferably, a material tray is arranged on the material loading platform and used for placing the battery pole piece to be detected.
Preferably, the side of the tray is provided with a stop block.
Preferably, the feeding platform is provided with a control button.
Preferably, this detection device still includes the protection casing, and the protection casing sets up on the material loading platform, is equipped with the display on the protection casing.
In order to solve the above technical problem, the present invention provides another technical solution as follows: a detection method for detecting the lithium deposition condition of a battery pole by using a line scanning camera adopts the detection device of any one technical scheme for detection, and comprises the following steps: placing a battery pole piece to be detected on a feeding platform; starting an X-axis moving device to drive a line scanning camera to shoot the surface of the battery pole piece so as to acquire an image of the battery pole piece; and carrying out visual inspection on the image of the battery pole piece to analyze whether the battery pole piece has a lithium analysis defect.
(III) advantageous effects
Compared with the prior art, the invention provides a detection device and a detection method for detecting the lithium precipitation condition of a battery pole piece by using a line scanning camera, and the detection device and the detection method have the following beneficial effects: be used for placing the battery sheet who waits to detect through setting up the material loading platform, sweep the camera through setting up the line and shoot the surface of battery sheet to gather the image of battery sheet, carry out visual detection in order to analyze it and whether have to analyse the lithium defect, detect the analysis lithium situation of battery sheet through visual detection's mode, compare in current artifical naked eye judgement mode, need not to consume a large amount of energy time, and improve the accuracy that detects.
Drawings
FIG. 1 is a first perspective view of a device for detecting a lithium deposition condition of a battery plate using a line scan camera according to the present invention;
FIG. 2 is a two-dimensional view of a detecting device for detecting the lithium deposition of a battery plate by a line scan camera according to the present invention;
FIG. 3 is a perspective view of a device for detecting lithium deposition on a battery plate by a line scan camera according to the present invention, which comprises a protective cover.
The reference numbers in the figures are: the automatic feeding device comprises a coaxial light source 1, a feeding platform 2, a column 3, a fixing plate 4, a servo motor 5, a first lead screw 6, a transverse moving plate 7, a rotating handle 8, a second lead screw 9, a lifting plate 10, a charging tray 11, a stop block 12, a control button 13, a protective cover 14, a display 15, a three-color warning lamp 16 and a sliding rail 17.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a detection device for detecting the lithium precipitation condition of a battery pole piece by using a line scanning camera, which comprises: a line scanning camera (not shown), a coaxial light source 1, an X-axis moving device and a loading platform 2. The X-axis moving device is arranged on the feeding platform 2, the line scanning camera and the coaxial light source 1 are arranged on the X-axis moving device up and down relatively, the line scanning camera is located above the coaxial light source 1, the line scanning camera and the coaxial light source 1 are located above the feeding platform 2, and the shooting direction of the line scanning camera is towards the feeding platform 2. The feeding platform 2 is used for placing the battery pole pieces to be detected. The X-axis moving device can drive the line scanning camera and the coaxial light source 1 to synchronously move left and right. The line scanning camera is used for shooting the surface of the battery pole piece. The coaxial light source 1 is used to illuminate the shot of the line scan camera.
The invention relates to a line scanning camera, namely a linear array camera, which adopts a linear array image sensor such as a linear array CCD (Charge coupled Device), and the like, and the invention can adopt a 16K black-and-white line scanning camera. The lower end of the line scanning camera is provided with a lens, the coaxial light source 1 comprises a light splitting sheet and a diffusion plate, the light splitting sheet is obliquely arranged, the diffusion plate is vertically arranged, the light splitting sheet is made of a semi-transparent semi-reflective material, the lens vertically faces the light splitting sheet, the light source is diffused through the diffusion plate and hits the light splitting sheet, the light splitting sheet reflects light to an object (corresponding to the battery pole piece of the invention) and then reflects the light to the lens through the object, and the light reflected by the object and the camera are on the same axis, so that the light source in the mode is called as a coaxial light source, the coaxial light source provides more uniform illumination than a traditional light source, and meanwhile, the reflection of light of the object is avoided, so that the accuracy and the reproducibility of machine vision can be improved. The line scan camera and the coaxial light source adopted by the invention are both in the prior art, and are not described in detail herein.
In addition, the detection device also comprises an upright post 3 and a fixing plate 4, wherein the upright post 3 is arranged on the feeding platform 2, the fixing plate 4 is arranged on the upright post 3, and the X-axis moving device is arranged on the fixing plate 4.
Specifically, the X-axis moving device may include a servo motor 5, a first lead screw 6 and a traverse plate 7, the servo motor 5 is disposed on the fixing plate 4, the servo motor 5 is connected with the first lead screw 6, the fixing plate 4 is provided with a slide rail 17, one side of the traverse plate 7 is connected with the first lead screw 6, one side of the traverse plate 7 is slidably disposed on the slide rail 17 through a slider, and the line scanning camera and the coaxial light source 1 are disposed on the traverse plate 7. It should be understood that the servo motor 5 drives the first screw rod 6 to rotate so as to drive the traverse plate 7 to move left and right, i.e. the line scan camera and the coaxial light source 1 move left and right.
Preferably, the detecting device of the present embodiment further includes a rotating handle 8, a second screw 9 and a lifting plate 10, the second screw 9 is disposed on the other side of the traverse plate 7, the rotating handle 8 is disposed on the top of the second screw 9, the second screw 9 is connected to the lifting plate 10, the lifting plate 10 is slidably disposed on the other side of the traverse plate 7, and the line scan camera and the coaxial light source 1 are disposed on the lifting plate 10 up and down oppositely. When the focal length of the line scanning camera needs to be adjusted, the rotating handle 8 is operated to drive the second screw rod 9 to rotate, and the lifting plate 10 is further driven to ascend or descend, namely, the ascending or descending of the line scanning camera is realized.
In this embodiment, the feeding platform 2 is provided with a material tray 11, and the material tray 11 is used for placing the battery pole piece to be detected. Furthermore, a stop block 12 is arranged on the side edge of the tray 11. In addition, the feeding platform 2 is provided with a control button 13 for controlling the starting operation of the X-axis moving device and other equipment.
In addition, the detection device can also comprise a protective cover 14, the protective cover 14 is arranged on the feeding platform 2, and a display 15 is arranged on the protective cover 14 and can be used for displaying images shot by the line scanning camera. The top of the protective cover 14 can be provided with a three-color warning lamp 16 for warning the abnormal information of the equipment.
The invention also provides a detection method for detecting the lithium deposition condition of the battery pole piece by using the line scanning camera, the detection method adopts the detection device for detection, and the detection method comprises the following steps:
and placing the battery pole piece to be detected on a feeding platform.
And starting the X-axis moving device to drive the line scanning camera to shoot the surface of the battery pole piece so as to acquire the image of the battery pole piece.
Visually detecting the image of the battery pole piece to analyze whether the image has a lithium analysis defect: the method can specifically transmit the acquired image of the battery pole piece to an industrial personal computer, the industrial personal computer is provided with a CCD visual software system, and the image of the battery pole piece is visually detected through the CCD visual software system, namely, the image is subjected to characteristic detection and characteristic analysis of lithium analysis defects so as to determine whether the lithium analysis defects exist in the battery pole piece.
Compared with the prior art, the invention provides a detection device and a detection method for detecting the lithium precipitation condition of a battery pole piece by using a line scanning camera, and the detection device and the detection method have the following beneficial effects: the battery pole piece detection device comprises a feeding platform, a line scanning camera, a lithium analysis camera and a lithium analysis camera, wherein the feeding platform is used for placing a battery pole piece to be detected, the line scanning camera is used for shooting the surface of the battery pole piece to acquire an image of the battery pole piece, the image of the battery pole piece is subjected to visual detection to analyze whether a lithium analysis defect exists or not, the lithium analysis condition of the battery pole piece is detected in a visual detection mode, and compared with the existing manual naked eye judgment mode, a large amount of energy and time are not required to be consumed, and the detection accuracy is improved.
It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A detection device for detecting the lithium precipitation condition of a battery pole piece by using a line scanning camera is characterized by comprising: the line scanning camera comprises a line scanning camera body, a coaxial light source, an X-axis moving device and a feeding platform, wherein the X-axis moving device is arranged on the feeding platform, the line scanning camera body and the coaxial light source are arranged on the X-axis moving device in an up-down opposite mode, the line scanning camera body is located above the coaxial light source, the line scanning camera body and the coaxial light source are located above the feeding platform, and the shooting direction of the line scanning camera body is towards the feeding platform.
2. The detecting device according to claim 1, wherein the detecting device further comprises a column and a fixing plate, the column is disposed on the feeding platform, the fixing plate is disposed on the column, and the X-axis moving device is disposed on the fixing plate.
3. The detection device according to claim 2, wherein: the X-axis moving device comprises a servo motor, a first lead screw and a transverse moving plate, wherein the servo motor is arranged on the fixed plate, the servo motor is connected with the first lead screw, the fixed plate is provided with a slide rail, one side of the transverse moving plate is connected with the first lead screw, and one side of the transverse moving plate is arranged on the slide rail in a sliding mode.
4. The detecting device according to claim 3, further comprising a rotating handle, a second lead screw and a lifting plate, wherein the second lead screw is disposed on the other side of the traverse plate, the rotating handle is disposed on the top of the second lead screw, the second lead screw is connected to the lifting plate, the lifting plate is slidably disposed on the other side of the traverse plate, and the line scan camera and the coaxial light source are disposed on the lifting plate in an up-down opposite manner.
5. The detection device according to claim 1, wherein: the lower extreme of camera is swept to line is equipped with the camera lens, coaxial light source is including being the beam splitter of slope setting and being the diffuser plate of vertical setting, the vertical orientation of camera lens the beam splitter.
6. The detection device according to claim 1, wherein: and a material tray is arranged on the material loading platform and used for placing a battery pole piece to be detected.
7. The detection device according to claim 6, wherein: and a stop block is arranged on the side edge of the material tray.
8. The detection device according to claim 1, wherein: the feeding platform is provided with a control button.
9. The detection device according to claim 1, further comprising a protective cover, wherein the protective cover is disposed on the feeding platform, and a display is disposed on the protective cover.
10. A detection method for detecting a lithium deposition condition of a battery pole by using a line scanning camera, which is characterized in that the detection method adopts the detection device of any one of claims 1 to 9 for detection, and the detection method comprises the following steps:
placing a battery pole piece to be detected on the feeding platform;
starting the X-axis moving device to drive the line scanning camera to shoot the surface of the battery pole piece so as to acquire an image of the battery pole piece;
and carrying out visual inspection on the image of the battery pole piece to analyze whether the battery pole piece has a lithium analysis defect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210342625.0A CN114923930A (en) | 2022-03-31 | 2022-03-31 | Detection device and method for detecting lithium deposition condition of battery pole piece by using line scanning camera |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210342625.0A CN114923930A (en) | 2022-03-31 | 2022-03-31 | Detection device and method for detecting lithium deposition condition of battery pole piece by using line scanning camera |
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| CN114923930A true CN114923930A (en) | 2022-08-19 |
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| CN202210342625.0A Pending CN114923930A (en) | 2022-03-31 | 2022-03-31 | Detection device and method for detecting lithium deposition condition of battery pole piece by using line scanning camera |
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