CN220932763U - Detection device for metal scraps in film covering area of pole lug of lithium battery pole piece - Google Patents
Detection device for metal scraps in film covering area of pole lug of lithium battery pole piece Download PDFInfo
- Publication number
- CN220932763U CN220932763U CN202322771373.6U CN202322771373U CN220932763U CN 220932763 U CN220932763 U CN 220932763U CN 202322771373 U CN202322771373 U CN 202322771373U CN 220932763 U CN220932763 U CN 220932763U
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- China
- Prior art keywords
- pole piece
- lithium battery
- light
- shaft
- assembly
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 58
- 239000002184 metal Substances 0.000 title claims abstract description 58
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 41
- 238000001514 detection method Methods 0.000 title claims abstract description 30
- 230000001502 supplementing effect Effects 0.000 claims description 19
- 238000004804 winding Methods 0.000 claims description 10
- 239000007888 film coating Substances 0.000 claims description 8
- 238000009501 film coating Methods 0.000 claims description 8
- 230000000712 assembly Effects 0.000 claims description 6
- 238000000429 assembly Methods 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 210000002489 tectorial membrane Anatomy 0.000 claims 2
- 239000010408 film Substances 0.000 description 20
- 239000011888 foil Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Landscapes
- Battery Electrode And Active Subsutance (AREA)
Abstract
The application discloses a detection device for metal scraps in a lithium battery pole lug film covering area, which comprises a device main body, an unreeling component, a reeling component, at least one light ray generator and at least one light ray receiver, wherein the unreeling component comprises an unreeling shaft for reeling one end of a pole piece, the reeling component comprises a reeling shaft for reeling the other end of a lithium battery, and the reeling shaft is used for radiating light rays towards the pole pieces between the unreeling shaft and the reeling shaft, and the light ray receiver is used for receiving light rays refracted by the metal scraps in the pole pieces.
Description
Technical Field
The utility model relates to a detection device for metal scraps in a film covering area of a pole lug of a lithium battery, in particular to a detection device for metal scraps in a film covering area of a pole lug of a lithium battery.
Background
Today, with the rapid growth of population and the rapid development of socioeconomic, resources and energy are gradually in shortage, environmental protection is increasingly emphasized, and energy development and saving are an important issue in the world today. Energy is the basis for the existence and development of human society, and modern society based on mineral energy is increasingly subjected to the crisis of energy depletion and environmental pollution. Meanwhile, with the advent of the informationized high-tech age, energy application forms are changing, and the demand for renewable, pollution-free, small-sized and discrete mobile high-performance power supplies is rapidly increasing. Green and efficient secondary batteries are being developed in various countries. The lithium ion battery as a novel secondary battery has the advantages of high energy density and power density, high working voltage, light weight, small volume, long cycle life, good safety, environmental protection and the like, and has wide application prospect in the aspects of portable electric appliances, electric tools, large energy storage, electric traffic power sources and the like.
Winding or stacking pole pieces of a predetermined size is a common forming manner of lithium batteries, wherein when the lithium batteries are manufactured, the pole pieces are firstly required to be manufactured, and each pole piece comprises a metal foil A1 such as aluminum foil or copper foil and a coating A2 with a certain width and a predetermined distance in the length direction of the metal foil. In general, in order to avoid a short circuit of a lithium battery to be formed later, a thin film A3 having a certain width needs to be coated at a region where the metal foil and the coating layer meet at a position where a tab is formed later, as shown in fig. 1.
However, during the production and transportation of the pole piece, more or less metal dust may adhere to the junction area of the metal foil and the coating, and although the step of removing the metal dust by strong magnetism is performed later, there may be some metal dust residue which is weaker in magnetism or which is not absorbed. These remaining metal filings have burrs that can easily penetrate the subsequently covered film and, once the film is pierced, can potentially lead to the risk of short circuits in the final formed lithium battery.
Disclosure of utility model
The utility model has the advantages that the detection device for the metal scraps in the film covering area of the pole lug of the lithium battery can detect the metal scraps in the film covering area of the pole lug of the lithium battery, so that unqualified pole pieces are prevented from being used for manufacturing battery cells, unqualified battery cells are prevented from flowing into the market, and the qualification rate of the battery cells leaving a factory is improved.
The utility model further provides a detection device for the metal scraps in the film covering area of the pole lug of the lithium battery, wherein the detection device for the metal scraps in the film covering area of the pole lug of the lithium battery can avoid the defect that the reflection brightness of the metal scraps is insufficient to form detection errors.
In order to achieve at least one of the above advantages, the present utility model provides a detection device for metal filings in a tab film covering region of a lithium battery pole piece, the detection device for metal filings in a tab film covering region of a lithium battery pole piece comprising:
a device body;
An unreeling assembly, wherein the unreeling assembly comprises an unreeling shaft for winding one end of a pole piece;
The winding assembly comprises a winding shaft and is used for winding the other end of the lithium battery;
At least one light generator for radiating light toward the pole pieces between the unreeling shaft and the reeling shaft;
At least one light receiver, wherein the light receiver is configured to receive light refracted through metal filings in the pole piece.
According to an embodiment of the utility model, the detection device for metal scraps in the lug film covering area of the lithium battery pole piece comprises at least one light supplementing component, wherein the light supplementing component is arranged on the device main body, is arranged between the unreeling component and the reeling component, and is positioned on one side of the pole piece.
According to an embodiment of the utility model, the detection device for metal scraps in the tab film covering area of the lithium battery pole piece comprises a plurality of light supplementing assemblies, wherein the light supplementing assemblies are arranged along the axial direction of the unreeling shaft.
According to an embodiment of the utility model, the light generator is implemented to comprise a light source.
According to an embodiment of the utility model, the light receiver is configured as an image acquisition device.
According to an embodiment of the utility model, the detection device for the metal scraps of the tab film covering area of the lithium battery pole piece comprises at least one tensioning assembly, wherein the tensioning assembly is arranged between the unreeling assembly and the reeling assembly. The tensioning assembly comprises at least one tensioning shaft, wherein the tensioning shaft is arranged on the device main body in parallel with the unreeling shaft and is used for tensioning the pole piece
According to an embodiment of the utility model, the light generator is implemented as a dome light source generator.
According to an embodiment of the utility model, the light supplementing assembly is implemented as a linear light source generator.
Drawings
Fig. 1 shows a schematic diagram of a pole piece detected by the detection device for metal scraps in a pole lug film covering area of a lithium battery pole piece.
Fig. 2 shows a perspective view of the detection device for metal scraps in a tab film covering area of a lithium battery pole piece.
Fig. 3 shows a schematic diagram of the detection device for metal scraps in a tab film coating area of a lithium battery pole piece according to the utility model under an angle.
Fig. 4 shows a schematic view of the detection device for metal scraps in a tab film coating area of a lithium battery pole piece according to another angle of the utility model.
Fig. 5 shows a schematic diagram of the detection device for metal scraps in a tab film covering region of a lithium battery pole piece in an operating state.
Fig. 6 shows a partially enlarged view of fig. 5.
Detailed Description
The following description is presented to enable one of ordinary skill in the art to make and use the utility model. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art. The basic principles of the utility model defined in the following description may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the utility model.
It will be appreciated by those skilled in the art that in the present disclosure, the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. refer to an orientation or positional relationship based on that shown in the drawings, which is merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore the above terms should not be construed as limiting the present utility model.
It will be understood that the terms "a" and "an" should be interpreted as referring to "at least one" or "one or more," i.e., in one embodiment, the number of elements may be one, while in another embodiment, the number of elements may be plural, and the term "a" should not be interpreted as limiting the number.
Referring to fig. 1 to 6, a device for detecting metal chips in a film coating region of a tab of a lithium battery according to a preferred embodiment of the present utility model includes a device body 10, an unreeling assembly 20, a reeling assembly 30, at least one light generator 40 and at least one light receiver 50.
The unreeling assembly 20, the reeling assembly 30, the light generator 40, and the light receiver 50 are all disposed at the device body 10. The unreeling assembly 20 comprises an unreeling shaft 21, wherein the reeling assembly 30 comprises a reeling shaft 31, wherein the unreeling shaft 21 and the reeling shaft 31 are coaxially and spacedly arranged at the device body 10.
One end of the pole piece 900 is wound around the unwinding shaft 21, wherein the other end of the pole piece 900 is wound around the winding shaft 31. The light generator 40 and the light receiver 50 are both disposed between the unwind assembly 20 and the wind-up assembly 30 on one side of the pole piece 900.
The light generator 40 is configured to radiate light toward the diaphragm in the pole piece 900 between the unwind assembly 20 and the wind-up assembly 30 to form a detection light. It should be noted that when metal shavings are present in the diaphragm, they refract the light radiated by the light generator 40. The light receiver 50 is configured to receive light refracted by the metal filings.
In one embodiment, the light generator 40 is implemented to include a light source. Preferably, the light generator 40 is implemented as a dome light source generator, and after being implemented as a dome light source generator, the light radiated from the dome light source generator can uniformly irradiate the diaphragm from directly above.
The light receiver 50 is configured as an image acquisition device. It will be appreciated by those skilled in the art that light may be continuously radiated by the light generator 40 toward the pole piece 900 between the unwind assembly 20 and the wind-up assembly 30. Since most of the metal scraps located in the diaphragm are aluminum alloy scraps, the metal scraps have a certain light refractive index. Therefore, the metal filings interposed in the diaphragm can refract part of the light radiated from the light generator 40. When the refracted light received by the light receiver 50, it indicates that there is metal debris in the pole piece 900, so as to form a corresponding detection result.
Still further, the detection device for metal scraps in the tab film covering region of a lithium battery pole piece comprises at least one light supplementing component 60, wherein the light supplementing component 60 is disposed on the device main body 10 and between the unreeling component 20 and the reeling component 30 and is located on one side of the pole piece 900, and at the same time, the light supplementing component 60 is disposed and maintained on the same side of the light generator 40 opposite to the pole piece 900.
In this way, light radiated via the light supplementing assembly 60 can illuminate the diaphragm from the other side of the diaphragm, thereby enhancing the brightness of the metal chips in the diaphragm, so that the metal chips in the diaphragm can be more easily detected. In addition, the light supplementing assembly 60 can increase the area of the light received in the light generator 40 that is reflected via the metal chips, thereby making the metal chips more easily captured.
Preferably, the detection device for metal scraps in the tab film covering region of the lithium battery pole piece comprises a plurality of the light supplementing assemblies 60, wherein the light supplementing assemblies 60 are arranged along the axial direction of the unwinding shaft 21.
Preferably, the light supplementing assembly 60 is implemented as a linear light source generator, wherein the light supplementing assembly 60 implemented as a linear light source can make the metal filings brighter, thereby enabling the metal filings in the diaphragm to be more easily detected.
It will be appreciated by those skilled in the art that by the combination of the dome light source generator and the linear light source generator, swarf in the diaphragm can be effectively captured.
Preferably, the detection device for metal scraps in the tab film covering region of the lithium battery pole piece comprises at least one tensioning assembly 70, wherein the tensioning assembly 70 is arranged between the unreeling assembly 20 and the reeling assembly 30. The tensioning assembly 70 comprises at least one tensioning shaft 71, wherein the tensioning shaft 71 is arranged on the device body 10 in parallel with the unreeling shaft 21 for tensioning the pole piece 900.
It will be appreciated by persons skilled in the art that the embodiments of the utility model described above and shown in the drawings are by way of example only and are not limiting. The advantages of the present utility model have been fully and effectively realized. The functional and structural principles of the present utility model have been shown and described in the examples and embodiments of the utility model may be modified or practiced without departing from the principles described.
Claims (8)
1. A detection device for lithium cell pole piece tab tectorial membrane district metal fillings, its characterized in that, detection device for lithium cell pole piece tab tectorial membrane district metal fillings includes:
a device body;
An unreeling assembly, wherein the unreeling assembly comprises an unreeling shaft for winding one end of a pole piece;
The winding assembly comprises a winding shaft and is used for winding the other end of the lithium battery;
At least one light generator for radiating light toward the pole pieces between the unreeling shaft and the reeling shaft;
At least one light receiver, wherein the light receiver is configured to receive light refracted through metal filings in the pole piece.
2. The device for detecting metal shavings in a tab coating area of a lithium battery pole piece according to claim 1, wherein the device for detecting metal shavings in a tab coating area of a lithium battery pole piece comprises at least one light supplementing component, wherein the light supplementing component is disposed on the device body and between the unreeling component and the reeling component and is located at one side of the pole piece.
3. The detection device for metal shavings of a lithium battery pole piece tab film coating area according to claim 2, wherein the detection device for metal shavings of a lithium battery pole piece tab film coating area comprises a plurality of the light supplementing assemblies, wherein the light supplementing assemblies are arranged along an axial direction of the reel shaft.
4. A detection device for metal filings in a tab coating area of a lithium battery pole piece according to any of claims 1 to 3, characterized in that the light generator is implemented to comprise a light source.
5. The device for detecting metal shavings in a lithium battery pole piece tab film coating area of claim 4, wherein said light generator is implemented as a dome light source generator.
6. A detection device for metal filings in a tab coating area of a lithium battery pole piece according to any one of claims 1 to 3, wherein the light receiver is configured as an image acquisition device.
7. A device for detecting metal shavings in a lithium battery pole tab film coating area according to any one of claims 1 to 3, comprising at least one tensioning assembly, wherein the tensioning assembly is arranged between the unreeling assembly and the reeling assembly, the tensioning assembly comprising at least one tensioning shaft, wherein the tensioning shaft is arranged in the device body parallel to the unreeling shaft for tensioning the pole pieces.
8. The device for detecting metal shavings in a lithium battery pole piece tab film coating area of claim 2, wherein said light supplementing assembly is implemented as a linear light source generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322771373.6U CN220932763U (en) | 2023-10-12 | 2023-10-12 | Detection device for metal scraps in film covering area of pole lug of lithium battery pole piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322771373.6U CN220932763U (en) | 2023-10-12 | 2023-10-12 | Detection device for metal scraps in film covering area of pole lug of lithium battery pole piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220932763U true CN220932763U (en) | 2024-05-10 |
Family
ID=90961858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322771373.6U Active CN220932763U (en) | 2023-10-12 | 2023-10-12 | Detection device for metal scraps in film covering area of pole lug of lithium battery pole piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220932763U (en) |
-
2023
- 2023-10-12 CN CN202322771373.6U patent/CN220932763U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |