Lithium battery cover plate detection device

Abstract

The utility model relates to the technical field of lithium battery cover plate detection, in particular to a lithium battery cover plate detection device. The lithium battery cover plate detection device comprises a cover plate liquid injection hole detection assembly and a detection system, the cover plate liquid injection hole detection assembly comprises a first fixing table, the first fixing table is provided with a first shooting assembly and a first light source, and the first shooting assembly is located above the first light source; the first working table is arranged below the first light source, a battery cover plate is placed on the first working table, a liquid injection hole is formed in the battery cover plate, the first shooting assembly, the first light source and the battery cover plate are coaxially arranged, the first light source is provided with a light-emitting end parallel to the horizontal direction, and the light-emitting end faces the battery cover plate so as to irradiate 0-angle light to the liquid injection hole; the detection system is electrically connected with the first shooting assembly. The light-emitting end of the first light source is a two-dimensional light source and can irradiate the liquid injection hole with 0-angle light, the 0-angle light can irradiate tiny structures such as burrs, and shooting of the first shooting assembly is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery cover plate detection, and particularly relates to a lithium battery cover plate detection device. Background Art

[0002] A liquid injection hole is formed in the lithium battery cover plate, and a solution can be injected into the lithium battery through the liquid injection hole. If there are burrs in the liquid injection hole, the burrs will enter the battery along with the solution during liquid injection. During the use of the battery, it is easy to react with the solution and cause an explosion.

[0003] Therefore, after the lithium battery cover plate is manufactured, it is necessary to detect the liquid injection hole on the lithium battery cover plate to check whether there are burrs. In the prior art, the liquid injection hole is irradiated by 3D lighting, and then photographed by a photographing device to determine whether there are burrs in the liquid injection hole. However, the 3D lighting device is suitable for irradiating large structures, and the 3D lighting device cannot irradiate small structures such as burrs, resulting in the photographing device being unable to photograph whether there are burrs in the liquid injection hole. At the same time, the 3D lighting device starts slowly, affecting the detection efficiency. Content of the Utility Model

[0004] Therefore, the technical problem to be solved by the utility model is that the 3D lighting device is suitable for irradiating large structures, and the 3D lighting device cannot irradiate small structures such as burrs, resulting in the photographing device being unable to photograph whether there are burrs in the liquid injection hole. At the same time, the 3D lighting device starts slowly, affecting the detection efficiency. Thus, a lithium battery cover plate detection device is provided.

[0005] To solve the above problems, the utility model provides a lithium battery cover plate detection device, which includes a cover plate liquid injection hole detection component and a detection system. The cover plate liquid injection hole detection component includes:

[0006] A first fixing table, which is provided with a first photographing component and a first light source, and the first photographing component is located above the first light source;

[0007] A first workbench, which is arranged below the first light source. A battery cover plate is placed on the first workbench. The battery cover plate has a liquid injection hole. The first photographing component, the first light source and the battery cover plate are coaxially arranged. The first light source has a light emitting end parallel to the horizontal direction, and the light emitting end faces the battery cover plate to irradiate 0-degree light on the liquid injection hole;

[0008] The detection system is electrically connected to the first photographing component, and the first photographing component is adapted to transmit the image of the liquid injection hole when irradiated by the light emitting end to the detection system.

[0009] Further, the first light source is of an annular structure, and the first photographing assembly photographs the liquid injection hole through the inner hole of the first light source.

[0010] Further, it further includes a cover plate pole detection assembly, and the cover plate pole detection assembly includes:

[0011] A second fixing table, the second fixing table is arranged on one side of the first fixing table, a pair of second light sources arranged at intervals and a pair of second photographing assemblies arranged at intervals are arranged on the second fixing table, a pair of the second photographing assemblies are located above a pair of the second light sources, a pair of the second photographing assemblies are arranged in one-to-one correspondence with a pair of the second light sources, and a pair of the second photographing assemblies are electrically connected to the detection system;

[0012] A second workbench, which is arranged below a pair of the second light sources, a battery cover plate is placed on the second workbench, the battery cover plate has a positive pole and a negative pole, the positive pole and the negative pole are arranged at intervals, and the positive pole and the negative pole are respectively coaxially arranged with one of the second light sources and one of the second photographing assemblies.

[0013] Further, a pair of light-emitting shells are arranged on the second fixing table, and the second light sources are arranged inside the light-emitting shells.

[0014] Further, the second light sources are arranged on the inner side walls of the light-emitting shells, and a refracting mirror with a triangular cross-section is constructed on the side wall of the light-emitting shell opposite to the second light sources, the hypotenuse of the refracting mirror faces the second light sources, and the light emitted by the second light sources is adapted to be refracted to the positive pole / negative pole through the refracting mirror.

[0015] Further, a transparent plate is arranged at the top end of the light-emitting shell, and the second photographing assembly photographs the positive pole / negative pole through the transparent plate.

[0016] Further, the detection system includes an AI detection module and a software module, the AI detection module is electrically connected to the first light source and the second light source so that the first light source and the second light source transmit the photographed images to the AI detection module for detection, and the AI detection module is electrically connected to the software module so that the AI detection module transmits the detection information to the software module for marking.

[0017] Further, limiting grooves are arranged on the first workbench and the second workbench, and the battery cover plate is clamped in the limiting grooves.

[0018] Further, a fixing bracket for fixing the second light source is arranged on one side of the second fixing table.

[0019] Further, the first light source and the second light source are connected to a power supply device through electric wires.

[0020] The utility model has the following advantages:

[0021] The utility model discloses a lithium battery cover plate detection device, which coaxially arranges a first photographing assembly, a first light source and a battery cover plate. At the same time, the first light source has a light emitting end parallel to the horizontal direction, and the light emitting end faces the battery cover plate to irradiate 0-degree light on the liquid injection hole. The light emitting end of the first light source is a two-dimensional light source, which can irradiate 0-degree light on the liquid injection hole. The 0-degree light can irradiate fine structures such as burrs, facilitating the first photographing assembly to take pictures, effectively improving the detection accuracy. The starting speed of the light emitting end of the irradiated two-dimensional light source is fast, which can effectively improve the detection efficiency. Description of the Drawings

[0022] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 Schematic diagram of the cover plate liquid injection hole detection component in this embodiment;

[0024] Figure 2 Side view of the cover plate liquid injection hole detection component in this embodiment;

[0025] Figure 3 Schematic diagram of the cover plate pole column detection component in this embodiment;

[0026] Figure 4 Cross-sectional view of the cover plate pole column detection component in this embodiment;

[0027] Figure 5 Refraction principle diagram of the refraction mirror in this embodiment;

[0028] Explanation of the reference numerals in the drawings:

[0029] 1. First fixing table, 2. First photographing assembly; 3. First light source; 4. First workbench; 5. Battery cover plate; 6. Liquid injection hole; 7. Second fixing table; 8. Second light source; 9. Second photographing assembly; 10. Second workbench; 11. Light emitting housing; 12. Refraction mirror; 13. Transparent plate; 14. Limit groove; 15. Fixed bracket; 16. Electric wire. Specific Embodiments

[0030] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0031] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0032] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0033] In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0034] As Figures 1 to 5 shown, this embodiment discloses a detection device for a lithium battery cover plate 5, including: a cover plate liquid injection hole detection component and a detection system. The cover plate liquid injection hole detection component includes a first fixed table 1 and a first workbench 4. The first fixed table 1 is provided with a first shooting component 2 and a first light source 3. The first shooting component 2 is located above the first light source 3. The first workbench 4 is arranged below the first light source 3. The battery cover plate 5 is placed on the first workbench 4. The battery cover plate 5 has a liquid injection hole 6. The first shooting component 2, the first light source 3, and the battery cover plate 5 are coaxially arranged. The first light source 3 has a light emitting end parallel to the horizontal direction, and the light emitting end faces the battery cover plate 5 to irradiate 0-degree light on the liquid injection hole 6. The detection system is electrically connected to the first shooting component 2, and the first shooting component 2 is adapted to transmit the image of the liquid injection hole 6 when irradiated by the light emitting end to the detection system.

[0035] Specifically, the first fixing platform 1 includes a column perpendicular to the horizontal direction and a base. A slide rail is provided on the column, and two sliding brackets are slidably arranged on the slide rail. The first shooting assembly 2 and the first light source 3 are respectively connected to the column through the sliding brackets. The first shooting assembly 2 and the first light source 3 can respectively move along the guiding direction of the slide rail through the sliding brackets, so as to adjust the positions of the first shooting assembly 2 and the first light source 3. The first shooting assembly 2 is arranged above the first light source 3, and the first workbench 4 is arranged below the first light source 3. A battery cover plate 5 is arranged on the first workbench 4, and a liquid injection hole 6 is provided on the battery cover plate 5. The liquid injection hole 6 is coaxially arranged with the first light source 3 and the first shooting assembly 2. A light emitting end is arranged on the lower end surface of the first light source 3, and the light emitting end is parallel to the horizontal direction. At the same time, the light emitting end is parallel to the liquid injection hole 6. The light emitting end is a two-dimensional light source. Because the light emitting end is parallel to the liquid injection hole 6, the light irradiated by the light emitting end to the liquid injection hole 6 is 0-degree light. The first shooting assembly 2 can shoot the liquid injection hole 6 irradiated by the light emitting end and transmit the image to the detection system. If there are burrs inside the liquid injection hole 6 in the image, it will be illuminated by the 0-degree light and form white spikes on the image. The detection system can mark the battery cover plate 5, which is convenient for the staff to check.

[0036] Furthermore, the first light source 3 is of a ring structure, and the first shooting assembly 2 shoots the liquid injection hole 6 through the inner hole of the first light source 3.

[0037] Specifically, as Figure 1 shown, the first light source 3 is of a ring structure. The first light source 3 irradiates annular light to the liquid injection hole 6. The liquid injection hole 6 is located at the inner hole of the first light source 3. The first shooting assembly 2 shoots the liquid injection hole 6 through the inner hole of the first light source 3.

[0038] Furthermore, it further includes a cover plate pole detection assembly, and the cover plate pole detection assembly includes: a second fixing platform 7 and a second workbench 10. The second fixing platform 7 is arranged on one side of the first fixing platform 1. A pair of second light sources 8 arranged at intervals and a pair of second shooting assemblies 9 arranged at intervals are provided on the second fixing platform 7. A pair of second shooting assemblies 9 are located above a pair of second light sources 8. A pair of second shooting assemblies 9 are arranged in one-to-one correspondence with a pair of second light sources 8. A pair of second shooting assemblies 9 are electrically connected to the detection system. The second workbench 10 is arranged below a pair of second light sources 8. A battery cover plate 5 is placed on the second workbench 10. The battery cover plate 5 has a positive pole column and a negative pole column, and the positive pole column and the negative pole column are arranged at intervals. The positive pole column and the negative pole column are respectively coaxially arranged with a second light source 8 and a second shooting assembly 9.

[0039] Specifically, as Figure 3As shown in the figure, the second fixing platform 7 is arranged on one side of the first fixing platform 1. The second fixing platform 7 also includes a column and a base perpendicular to the horizontal direction. A slide rail is arranged on the column, and two sliding brackets are slidably arranged on the slide rail. A pair of second shooting components 9 and a pair of second light sources 8 are respectively connected to the column through the sliding brackets. The second shooting components 9 and the second light sources 8 can respectively move along the guiding direction of the slide rail through the sliding brackets, so as to adjust the positions of the second shooting components 9 and the second light sources 8. A pair of second shooting components 9 are arranged above a pair of second light sources 8, and a second workbench 10 is arranged below a pair of second light sources 8. A battery cover plate 5 is placed on the second workbench 10. The battery cover plate 5 has a positive pole column and a negative pole column, and the positive pole column and the negative pole column are respectively coaxially arranged with a pair of second light sources 8. Among them, one second shooting component 9 is coaxially arranged with one second light source 8, and the other second shooting component 9 is coaxially arranged with the other second light source 8, so as to simultaneously shoot the positive pole column and the negative pole column of the battery cover plate 5. A pair of second shooting components 9 are electrically connected to the detection system and can transmit the captured images to the detection system. If the positive and negative pole columns in the image have a melted edge situation, the metal at the edge of the weld bead will be missing, forming a concave inclined plane, and a shadow will be formed in the area where the melted edge occurs. The detection system can then mark the battery cover plate 5 for the convenience of the staff to view.

[0040] It should be noted that the battery cover plate 5 placed on the first workbench 4 / second workbench 10 can be moved to the second workbench 10 / first workbench 4 through a transmission structure, and the transmission structure can be a manipulator.

[0041] Furthermore, a pair of light-emitting housings 11 are arranged on the second fixing platform 7, and the second light sources 8 are arranged inside the light-emitting housings 11.

[0042] Furthermore, the second light sources 8 are arranged on the inner side wall of the light-emitting housings 11. A refraction mirror 12 with a triangular cross-section is constructed on the side wall of the light-emitting housing 11 opposite to the second light sources 8. The hypotenuse of the refraction mirror 12 faces the second light sources 8, and the light emitted by the second light sources 8 is adapted to be refracted to the positive pole column / negative pole column through the refraction mirror 12.

[0043] Furthermore, a transparent plate 13 is arranged at the top of the light-emitting housing 11, and the second shooting components 9 shoot the positive pole column / negative pole column through the transparent plate 13.

[0044] Specifically, such as Figure 4 and Figure 5As shown, the second light source 8 is disposed on the inner sidewall of the light-emitting housing 11. A refractive mirror 12 with a triangular cross-section is provided inside the light-emitting housing 11. In this embodiment, the refractive mirror 12 is a transparent structure. The positive electrode post / negative electrode post is located below the refractive mirror 12. The second light source 8 irradiates light towards the refractive mirror 12, and the light is refracted by the refractive mirror 12 and irradiated on the positive electrode post / negative electrode post. A transparent plate 13 is provided at the top of the light-emitting housing 11. The transparent plate 13 can display the irradiated state of the positive electrode post / negative electrode post. The second photographing assembly 9 can photograph the positive electrode post / negative electrode post through the transparent plate 13 and transmit the photographed image to the control system.

[0045] Furthermore, the detection system includes an AI detection module and a software module. The AI detection module is electrically connected to the first light source 3 and the second light source 8 so that the first light source 3 and the second light source 8 transmit the photographed images to the AI detection module for detection. The AI detection module is electrically connected to the software module so that the AI detection module transmits the detection information to the software module for marking. The AI detection module can determine whether there are defects on the battery cover 5 in the image. If there are defects, it can transmit the detection information to the software module, and the software module marks the battery cover 5 for the convenience of the staff to view.

[0046] Furthermore, as Figure 4 shown, limiting grooves 14 are provided on the first workbench 4 and the second workbench 10. The battery cover 5 is clamped in the limiting grooves 14. The limiting grooves 14 can prevent the battery cover 5 from moving under the drive of external force, resulting in blurred photographed images and inaccurate detection results.

[0047] Furthermore, as Figure 3 shown, a fixing bracket 15 for fixing the second light source 8 is provided on one side of the second fixing table 7.

[0048] Furthermore, as Figure 1 and Figure 3 shown, the first light source 3 and the second light source 8 are connected to the power supply device through wires 16.

[0049] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or variations derived therefrom are still within the protection scope of the present invention.

Claims

1. A lithium battery cover plate detection device, characterized in that, It includes a cover plate liquid injection hole detection component and a detection system. The cover plate liquid injection hole detection component includes: A first fixing table (1), on which a first photographing component (2) and a first light source (3) are arranged. The first photographing component (2) is located above the first light source (3); A first workbench (4) is arranged below the first light source (3). A battery cover plate (5) is placed on the first workbench (4). The battery cover plate (5) has a liquid injection hole (6). The first photographing component (2), the first light source (3) and the battery cover plate (5) are coaxially arranged. The first light source (3) has a light emitting end parallel to the horizontal direction, and the light emitting end faces the battery cover plate (5) to irradiate the liquid injection hole (6) with 0-degree light; The detection system is electrically connected to the first photographing component (2), and the first photographing component (2) is adapted to transmit an image of the liquid injection hole (6) when irradiated by the light emitting end to the detection system.

2. The lithium battery cover plate detection device according to claim 1, wherein: The first light source (3) is of a ring structure, and the first photographing component (2) photographs the liquid injection hole (6) through the inner hole of the first light source (3).

3. The lithium battery cover plate detection device according to claim 1, wherein It further includes a cover plate pole detection component. The cover plate pole detection component includes: A second fixing table (7) is arranged on one side of the first fixing table (1). A pair of second light sources (8) arranged at intervals and a pair of second photographing components (9) arranged at intervals are arranged on the second fixing table (7). A pair of the second photographing components (9) are located above a pair of the second light sources (8). A pair of the second photographing components (9) are arranged in one-to-one correspondence with a pair of the second light sources (8). A pair of the second photographing components (9) are electrically connected to the detection system; A second workbench (10) is arranged below a pair of the second light sources (8). A battery cover plate (5) is placed on the second workbench (10). The battery cover plate (5) has a positive pole column and a negative pole column. The positive pole column and the negative pole column are arranged at intervals. The positive pole column and the negative pole column are respectively coaxially arranged with one of the second light sources (8) and one of the second photographing components (9).

4. The lithium battery cover plate detection device according to claim 3, wherein: A pair of light emitting shells (11) are arranged on the second fixing table (7), and the second light sources (8) are arranged inside the light emitting shells (11).

5. The lithium battery cover plate detection device according to claim 4, wherein: The second light source (8) is arranged on the inner side wall of the light emitting shell (11). A refraction mirror (12) with a triangular cross-section is constructed on the side wall of the light emitting shell (11) opposite to the second light source (8). The hypotenuse of the refraction mirror (12) faces the second light source (8), and the light emitted by the second light source (8) is adapted to be refracted to the positive pole column / negative pole column through the refraction mirror (12).

6. The lithium battery cover plate detection device according to claim 5, wherein: A transparent plate (13) is provided at the top of the light-emitting housing (11), and the second photographing assembly (9) photographs the positive electrode post / negative electrode post through the transparent plate (13).

7. The lithium battery cover plate detection device according to any one of claims 3 to 6, wherein: The detection system includes an AI detection module and a software module. The AI detection module is electrically connected to the first light source (3) and the second light source (8) so that the first light source (3) and the second light source (8) transmit the photographed images to the AI detection module for detection. The AI detection module is electrically connected to the software module so that the AI detection module transmits the detection information to the software module for marking.

8. The lithium battery cover plate detection device according to any one of claims 3 to 6, wherein: Limiting grooves (14) are provided on the first workbench (4) and the second workbench (10), and the battery cover plate (5) is clamped in the limiting grooves (14).

9. The lithium battery cover plate detection device according to claim 3, wherein: A fixing bracket (15) for fixing the second light source (8) is provided on one side of the second fixing table (7).

10. The lithium battery cover plate detection device according to claim 3, wherein: The first light source (3) and the second light source (8) are connected to a power supply device through electric wires (16).

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