Battery appearance inspection apparatus and battery manufacturing device

Abstract

Embodiments of the present application provide a battery appearance inspection apparatus and a battery manufacturing device. The battery appearance inspection apparatus comprises a bracket, a first photographing assembly, a second photographing assembly, and an identification apparatus. The first photographing assembly is mounted on the bracket, and the first photographing assembly is configured to capture an appearance photo of a first object under inspection. The second photographing assembly is mounted on the bracket, and the second photographing assembly is configured to capture an appearance photo of a second object under inspection. The first object under inspection and the second object under inspection are different in shape. The identification apparatus is in signal connection with the first photographing assembly and the second photographing assembly, and the identification apparatus is configured to identify appearance defects of the first object under inspection on the basis of the photo captured by the first photographing assembly and identify appearance defects of the second object under inspection on the basis of the photo captured by the second photographing assembly. The battery manufacturing device comprises the battery appearance inspection apparatus.

Description

Battery appearance inspection device and battery manufacturing equipment

[0001] This application is based on the application with Chinese application number 202311608385.5 and application date November 29, 2023, and claims its priority. The disclosed content of the Chinese application is hereby introduced as a whole into this application. Technical Field

[0002] The present application relates to the field of battery technology, and in particular to a battery appearance inspection device and battery manufacturing equipment. Background Art

[0003] Energy conservation and emission reduction are key to the sustainable development of the automotive industry. Electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important component of the sustainable development of the automotive industry. For electric vehicles, battery technology is a key factor in their development.

[0004] The battery includes a cell, and the cell is provided with a pole. The manufacturing quality of the pole directly affects the overall manufacturing quality of the battery and affects the safety of the battery.

[0005] The above statements are only used to provide background information related to the present application and do not necessarily constitute prior art.

[0006] Summary of the Invention

[0007] The present application provides a battery appearance inspection device and battery manufacturing equipment, which can effectively improve the accuracy of appearance inspection.

[0008] In the first aspect, the present application provides a battery appearance inspection device, including a bracket, a first shooting component, a second shooting component and an identification device, the first shooting component is installed on the bracket, the first shooting component is configured to take a photo of the appearance of the first inspected component, the second shooting component is installed on the bracket, the second shooting component is configured to take a photo of the appearance of the second inspected component, the first inspected component and the second inspected component have different shapes, the identification device is signal-connected to the first shooting component and the second shooting component, the identification device is configured to identify appearance defects of the first inspected component based on the photos taken by the first shooting component, and to identify appearance defects of the second inspected component based on the photos taken by the second shooting component.

[0009] By setting up the first shooting component and the second shooting component, the first inspected part and the second inspected part can be inspected respectively, thereby improving the compatibility of the inspection device with different types of inspected parts, expanding the scope of application of the inspection device, and reducing the time for cutting and changing molds during the production process, which is beneficial to improving the efficiency of appearance inspection and production efficiency.

[0010] The first and second inspected parts are inspected respectively by the first shooting component and the second shooting component, and the first and second inspected parts can be equipped with special shooting components respectively, which is beneficial to improving the adaptability of the shooting components and the inspected parts, and overcoming the problems of poor imaging effect and low detection accuracy caused by poor adaptability.

[0011] By setting up an identification device, the appearance defects of the first and second inspected parts can be identified based on the photos taken by the first shooting component and the second shooting component, thereby providing a judgment basis for subsequent assembly or molding processes, avoiding unqualified inspected parts from being mixed into the downstream and affecting the overall manufacturing quality of the battery.

[0012] In some embodiments, the first detected member is in the shape of a cuboid, and the second detected member is in the shape of a cylinder.

[0013] Rectangular and cylindrical shapes are two common shapes for inspected parts. In other embodiments, the inspected part may also be a semi-cylindrical, triangular prism, or other shapes. Parameters such as the number and placement of the first and second camera assemblies can be adjusted based on the shape of the inspected part to improve imaging quality and enhance the accuracy of appearance inspection.

[0014] In some embodiments, the first shooting assembly includes multiple first connecting plates, the second shooting assembly includes multiple second connecting plates, the first connecting plates and the second connecting plates are both installed on the bracket, and the battery appearance inspection device includes multiple shooting devices, which are constructed to be detachably mounted on the first connecting plate and detachably mounted on the second connecting plate.

[0015] By constructing the shooting device so that it can be detachably mounted on the first connecting plate and the second connecting plate, the shooting device can be used as a component of the first shooting assembly and also as a component of the second shooting assembly, thereby achieving the purpose of the first shooting assembly and the second shooting assembly sharing the shooting device, which is conducive to cost control.

[0016] In some embodiments, the first camera assembly includes four cameras, each of which is divided into two groups, with the two groups of cameras arranged opposite each other. This arrangement facilitates capturing the four sides of the first rectangular parallelepiped inspection component, facilitates capturing the image using the principle of regular reflection of optical imaging, and does not interfere with the arrangement of the cameras of the second camera assembly.

[0017] In some embodiments, the central axes of the four photographing devices are collinear with the center of the side surface of the first inspected component they photograph. This arrangement is beneficial to improving the imaging quality of each side surface.

[0018] In some embodiments, the angle between the central axis of the camera device and a line perpendicular to the side surface of the first inspection object being photographed by the camera device is less than 90°. This arrangement facilitates high overall imaging quality of the corresponding side surfaces, particularly good imaging quality of the edges of the first inspection object, enabling inspection of the edges of the first inspection object for defects such as wire drawing and burrs.

[0019] In some embodiments, the depth of field D of the camera is greater than or equal to the larger value of d1*sinα and d2*sinβ, where d1 is the length of a first cross-section of the first inspected component perpendicular to the vertical direction, d2 is the width of the first cross-section, γ = arctan(d1 / 2d2), and σ = arctan(d2 / 2d1). This configuration effectively ensures that the imaging range of the camera encompasses the entire first and second side surfaces, resolving the issue of unclear imaging and the inability to determine whether defects exist due to a small imaging area.

[0020] In some embodiments, the second photographing assembly includes four photographing devices evenly spaced apart along the circumferential direction, which facilitates photographing the cylindrical second inspected object without interfering with the arrangement of the photographing devices of the first photographing assembly.

[0021] In some embodiments, the battery appearance inspection device also includes a first adjustment component, the first adjustment component includes a first adjustment member, a second adjustment member and a third adjustment member, the first shooting component and / or the second shooting component includes a shooting device, the first adjustment member is configured to adjust the position of the shooting device in a first direction, the second adjustment member is configured to adjust the position of the shooting device in a second direction, and the third adjustment member is configured to adjust the position of the shooting device in a third direction. The first direction is parallel to the vertical direction, the second direction is the direction approaching or away from the first inspected component or the second inspected component, and the second direction is perpendicular to the first direction, and the third direction is perpendicular to both the first direction and the second direction.

[0022] By setting the first adjusting member, the second adjusting member and the third adjusting member, the position adjustment of the photographing device in three two perpendicular directions can be achieved, so that the posture of the photographing device can be adjusted in all directions to take high-quality photos, providing a basis for improving the quality of appearance inspection.

[0023] In some embodiments, the first shooting assembly includes a second adjustment member and a third adjustment member, and the second shooting assembly includes a first adjustment member and a second adjustment member.

[0024] This arrangement enables the shooting device in the first shooting assembly to be positionally adjusted in the second direction and the third direction, and the shooting device in the second shooting assembly to be positionally adjusted in the first direction and the second direction.

[0025] In some embodiments, the number of the first adjustment components is the same as the number of the photographing devices, so that the position of each photographing device can be independently adjusted by the first adjustment components.

[0026] By configuring a dedicated first adjustment component for each camera, the position of each camera can be independently adjusted, so that the position adjustment of each camera is not limited by the position arrangement of other cameras, which is conducive to improving the quality of shooting.

[0027] In some embodiments, the first adjusting member is provided with a first mounting hole for connecting to the bracket and a second mounting hole for connecting to the second adjusting member, the second adjusting member is provided with a third mounting hole for connecting to the first adjusting member and a fourth mounting hole for connecting to the photographing device, the third adjusting member is provided with a fifth mounting hole for connecting to the bracket and a sixth mounting hole for connecting to the second adjusting member, wherein the second mounting hole is an oblong hole whose length direction extends along the first direction, the fourth mounting hole is an oblong hole whose length direction extends along the second direction, and the sixth mounting hole is an oblong hole whose length direction extends along the third direction.

[0028] The first adjusting member is connected to the bracket through the first mounting hole, the second adjusting member is connected to the first adjusting member through the second mounting hole and the third mounting hole, the third adjusting member is connected to the bracket through the fifth mounting hole, and the third adjusting member is connected to the second adjusting member through the sixth mounting hole.

[0029] In some embodiments, the first adjusting member is provided with a seventh mounting hole connected to the second adjusting member, the seventh mounting hole is a circular hole, and the second mounting hole is arc-shaped; and / or, the length direction of the second mounting hole is parallel to the second direction; and / or, the third adjusting member is provided with an eighth mounting hole connected to the second adjusting member, the eighth mounting hole is a circular hole, and the sixth mounting hole is arc-shaped.

[0030] By providing the seventh mounting hole, the first adjusting member and the second adjusting member can be connected through the second mounting hole and the seventh mounting hole respectively. The seventh mounting hole is a circular hole and the second mounting hole is arc-shaped. The first adjusting member can be swung relative to the second adjusting member along the length direction of the second mounting hole with the connection position of the seventh mounting hole as the center, thereby adjusting the position of the shooting device in the first direction.

[0031] By setting the eighth mounting hole, the second adjusting member and the third adjusting member can be connected through the sixth mounting hole and the eighth mounting hole respectively. The eighth mounting hole is a circular hole and the sixth mounting hole is arc-shaped. The third adjusting member can be swung relative to the second adjusting member along the length direction of the sixth mounting hole with the connection position of the eighth mounting hole as the center, thereby adjusting the position of the shooting device in the third direction.

[0032] In some embodiments, at least one of the second mounting hole, the fourth mounting hole, and the sixth mounting hole is provided with a scale. By providing the scale, the size of the position adjustment can be more accurately controlled, which is conducive to achieving more precise adjustment.

[0033] In some embodiments, the battery appearance inspection device further includes a first light source and a second light source mounted on the bracket, wherein the first light source is in the shape of a long strip, and the second light source is in the shape of a circular ring.

[0034] By setting a first strip-shaped light source and a second ring-shaped light source, strip light and ring light can be provided to the first shooting component and the second shooting component respectively, thereby improving the brightness of the side of the inspected part, increasing the contrast between the defective part and the non-defective part, and improving the imaging quality.

[0035] In some embodiments, there are two first light sources, the two first light sources are arranged opposite to each other, the first detected component is in the shape of a cuboid, and the first light source is substantially parallel to one of the diagonals of the first detected component.

[0036] By providing two first light sources and arranging the two first light sources relative to each other and substantially parallel to one of the diagonals of the first detected component, the imaging requirements can be substantially met. Compared with the solution of providing four first light sources, the cost can be greatly saved.

[0037] In some embodiments, the battery appearance inspection device also includes a second adjustment component, which is configured to adjust the position of the first light source in at least one of a fourth direction, a fifth direction, and a sixth direction, where the fourth direction is parallel to the vertical direction, the fifth direction is perpendicular to the sixth direction, and both are perpendicular to the fourth direction.

[0038] By setting up a second adjustment component, the position of the first light source can be adjusted in three directions perpendicular to each other, so that the detection device can adjust the position of the first light source according to the requirements of the first shooting component and the second shooting component to achieve better imaging effects.

[0039] In some embodiments, the second adjustment assembly includes a mounting base, a first mounting plate and a second mounting plate, the first light source is mounted on the mounting base, the mounting base is provided with a first connecting hole for connecting to the first mounting plate, the first mounting plate is provided with a second connecting hole for connecting to the mounting base and a third connecting hole for connecting to the second mounting plate, the second mounting plate is provided with a fourth connecting hole for connecting to the first mounting plate and a fifth connecting hole for connecting to the bracket, the first connecting hole is an oblong hole whose length direction extends along the fifth direction, the second connecting hole is an oblong hole whose length direction extends along the fourth direction, and at least one of the third connecting hole and the fourth connecting hole is an oblong hole whose length direction extends along the sixth direction.

[0040] By setting the first connecting hole as an oblong hole, the position of the first light source in the fifth direction can be adjusted; by setting the second connecting hole as an oblong hole, the position of the first light source in the fourth direction can be adjusted; by setting at least one of the third connecting hole and the fourth connecting hole as an oblong hole, the position of the first light source in the sixth direction can be adjusted.

[0041] In some embodiments, the first light source is disposed below the first camera assembly.

[0042] By arranging the first light source below the first shooting component, interference between the first light source and the first shooting component can be avoided. At the same time, it is also beneficial to use the first light source to illuminate the first and second inspection components below, so as to improve the imaging quality of the first and second shooting components.

[0043] In some embodiments, the battery appearance inspection device further includes a third adjustment component, and the third adjustment component is configured to adjust the position of the second light source in the vertical direction.

[0044] By providing the third adjustment component, the position of the second light source in the vertical direction can be adjusted, so that the position of the second light source can be adjusted according to needs.

[0045] In a second aspect, the present application provides a battery manufacturing device, including the above-mentioned battery appearance inspection device.

[0046] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the drawings without creative work.

[0048] FIG1 is a schematic structural diagram of some embodiments of the battery appearance inspection device disclosed in this application.

[0049] FIG2 is a partial cross-sectional schematic diagram of some embodiments of the battery appearance inspection device disclosed in this application.

[0050] FIG3 is an exploded view of some embodiments of the battery appearance inspection device disclosed in this application.

[0051] FIG4 is a diagram showing the detection principle of some embodiments of the battery appearance detection device disclosed in this application.

[0052] FIG5 is a schematic structural diagram of a first adjusting member in some embodiments of the battery appearance inspection device disclosed in this application.

[0053] FIG6 is a schematic structural diagram of a second adjusting member in some embodiments of the battery appearance inspection device disclosed in this application.

[0054] FIG7 is a schematic structural diagram of a second adjusting member and a third adjusting member in some embodiments of the battery appearance inspection device disclosed in this application.

[0055] FIG8 is a schematic structural diagram of a second adjustment component in some embodiments of the battery appearance inspection device disclosed in this application.

[0056] FIG9 is a schematic diagram of shooting angles of some embodiments of the battery appearance inspection device disclosed in this application.

[0057] FIG10 and FIG11 are schematic diagrams showing the depth of field length range of a camera in some embodiments of the battery appearance inspection device disclosed in the present application.

[0058] In the drawings, the drawings are not drawn to scale.

[0059] Marking instructions: 1. Bracket; 11. Bracket body; 12. Cover plate; 2. First shooting assembly; 21. First connecting plate; 3. Second shooting assembly; 31. Second connecting plate; 4. Identification device; 5. First adjustment assembly; 51. First adjustment member; 511. First mounting hole; 512. Second mounting hole; 513. Seventh mounting hole; 52. Second adjustment member; 521. Third mounting hole; 522. Fourth mounting hole; 523. Ninth mounting hole; 524. Tenth mounting hole; 525. Eleventh mounting hole; 53. Three adjusting parts; 531, fifth mounting hole; 532, sixth mounting hole; 533, eighth mounting hole; 6, first light source; 7, second light source; 8, second adjusting assembly; 81, mounting seat; 811, first connecting hole; 82, first mounting plate; 821, second connecting hole; 822, third connecting hole; 83, second mounting plate; 831, fourth connecting hole; 832, fifth connecting hole; 9, third adjusting assembly; 91, third mounting plate; 92, fourth mounting plate; 10, first detected part; 20, second detected part. DETAILED DESCRIPTION

[0060] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0061] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0062] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0063] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the technical features indicated. In addition, the term "perpendicular" does not mean perpendicular in the strict sense, but rather means within the allowable error range. The term "parallel" does not mean parallel in the strict sense, but rather means within the allowable error range.

[0064] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0065] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0066] In the description of the embodiments of the present application, the term "multiple" refers to more than two, unless otherwise specifically defined. Similarly, "multiple groups" refers to more than two groups, and "multiple sheets" refers to more than two sheets, unless otherwise specifically defined.

[0067] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0068] In the description of the embodiments of the present application, unless otherwise clearly specified or limited, technical terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal connections between two components or interactions between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood based on the specific circumstances.

[0069] Currently, market developments indicate that power batteries are becoming increasingly widely used. They are not only used in energy storage systems such as hydropower, thermal, wind, and solar power plants, but are also widely used in electric vehicles like electric bicycles, electric motorcycles, and electric vehicles, as well as in military equipment and aerospace. As power battery applications continue to expand, market demand is also growing.

[0070] The power battery includes a battery cell, which includes a shell, an electrode assembly and a pole. The electrode assembly is arranged inside the shell. The pole is the output end of the battery. Its inner end is installed in the shell and connected to the connecting piece on the electrode assembly, and the outer end extends out of the shell and is connected to the bus or other external electronic components.

[0071] During the production process, the pole may have defects such as burns, scratches, breakage, exposed metal, or wire drawing on the edge of the external plastic. These defects will greatly affect the quality of the pole and affect the safety of use. Therefore, the appearance quality of the pole needs to be inspected on the production line.

[0072] As production capacity requirements continue to increase, the requirements for testing equipment are also becoming increasingly stringent. Therefore, how to accurately detect cells with defective terminals to avoid assembly anomalies after flow is now a key issue in the lithium battery automated testing industry.

[0073] Currently, in related technologies, the appearance inspection of battery cell poles mostly uses a single area array CCD for stop-and-shoot inspection, which has poor compatibility with different types of poles and low inspection accuracy for some types of poles, and cannot meet the needs of quality control.

[0074] Based on the above considerations, the present application provides a battery appearance inspection device with an improved structure, which includes two groups of shooting components, which are respectively used to detect different types of parts to be inspected, thereby improving the compatibility of the inspection device with different types of parts to be inspected; moreover, by using different shooting components to shoot different types of parts to be inspected, the adaptability of the shooting components and the parts to be inspected can be improved, and the structural arrangement of the shooting components can be adjusted according to the type of parts to be inspected, which is conducive to improving the accuracy of shooting and thereby improving the accuracy of appearance quality inspection.

[0075] The present application also provides a battery manufacturing device, which includes the above-mentioned battery appearance detection device.

[0076] The following is a detailed introduction to some embodiments of the battery appearance inspection device provided by this application.

[0077] Referring to Figures 1 to 4, in some embodiments of the battery appearance inspection device provided in the present application, the inspection device includes a bracket 1, a first shooting component 2, a second shooting component 3 and an identification device 4, the first shooting component 2 is installed on the bracket 1, and the first shooting component 2 is configured to take a photo of the appearance of the first inspected component 10, the second shooting component 3 is installed on the bracket 1, and the second shooting component 3 is configured to take a photo of the appearance of the second inspected component 20, the first inspected component 10 and the second inspected component 20 have different shapes, the identification device 4 is signal-connected to the first shooting component 2 and the second shooting component 3, and the identification device 4 is configured to identify the appearance defects of the first inspected component 10 based on the photos taken by the first shooting component 2, and to identify the appearance defects of the second inspected component 20 based on the photos taken by the second shooting component 3.

[0078] By setting up the first shooting component 2 and the second shooting component 3, the first inspection part 10 and the second inspection part 20 can be inspected respectively, thereby improving the compatibility of the inspection device with different types of inspection parts, expanding the scope of application of the inspection device, reducing the time for cutting and changing during the production process, and helping to improve the efficiency of appearance inspection and production efficiency.

[0079] The first detection part 10 and the second detection part 20 are detected respectively by the first shooting component 2 and the second shooting component 3. The first detection part 10 and the second detection part 20 can be equipped with a special shooting component respectively, which is beneficial to improving the adaptability of the shooting component and the detection part, and overcoming the problems of poor imaging effect and low detection accuracy caused by poor adaptability.

[0080] By setting up the identification device 4, the appearance defects of the first inspection component 10 and the second inspection component 20 can be identified based on the photos taken by the first shooting component 2 and the second shooting component 3, thereby providing a judgment basis for the subsequent assembly or molding process, avoiding unqualified inspection components from being mixed into the downstream and affecting the overall manufacturing quality of the battery.

[0081] The identification device 4 may be a controller that may pre-store images of defect-free test pieces. By comparing the images captured by the first and second camera assemblies 2 and 3 with the images of the defect-free test pieces, it is possible to determine whether the first and second test pieces 10 and 20 have appearance defects. Alternatively, the controller may also pre-store relevant parameters of defect-free test pieces. By comparing the corresponding parameters in the images captured by the first and second camera assemblies 2 and 3 with the parameters of the defect-free test pieces, it is also possible to determine whether the first and second test pieces 10 and 20 have appearance defects.

[0082] In some embodiments, the first detected member 10 is in the shape of a cuboid, and the second detected member 20 is in the shape of a cylinder.

[0083] Rectangular and cylindrical shapes are two common shapes of the test pieces.

[0084] In other embodiments, the inspected object may also be in the shape of a semi-cylinder, a triangular prism, or other shapes. Parameters such as the number and placement of the first and second camera assemblies 2 and 3 may be adjusted based on the shape of the inspected object to improve imaging quality and enhance the accuracy of appearance inspection.

[0085] The first inspected piece 10 is a rectangular parallelepiped, and its edges are prone to defects such as wire drawing and burrs. The second inspected piece 20 is a cylindrical piece, and its surface is covered with plastic, which is prone to defects such as plastic burns, scratches, breakage, deformation, and metal exposure.

[0086] As shown in Figure 3, in some embodiments, the first shooting assembly 2 includes multiple first connecting plates 21, the second shooting assembly 3 includes multiple second connecting plates 31, the first connecting plates 21 and the second connecting plates 31 are both installed on the bracket 1, and the battery appearance inspection device includes multiple shooting devices, which are constructed to be detachably mounted on the first connecting plate 21 and detachably mounted on the second connecting plate 31.

[0087] By constructing the shooting device so that it can be detachably mounted on the first connecting plate 21 and the second connecting plate 31, the shooting device can be used as both a component of the first shooting component 2 and a component of the second shooting component 3, thereby achieving the purpose of the first shooting component 2 and the second shooting component 3 sharing the shooting device, which is conducive to cost control.

[0088] Moreover, by simultaneously installing the components of the first shooting assembly 2 (the first connecting plate 21) and the components of the second shooting assembly 3 (the second connecting plate 31) on the bracket 1, the detection device can be used to detect both the first detected part 10 and the second detected part 20, thereby improving the compatibility of the detection device with different types of detected parts and expanding the scope of application of the detection device; when the embodiment of the battery appearance detection device provided in the present application is set on a production line, if the first detected part 10 and the second detected part 20 exist on the production line at the same time, there is no need to frequently replace the detection device. By switching the first shooting assembly 2 and the second shooting assembly 3, shooting and detection of different detected parts can be achieved, which greatly shortens the time for cutting and changing the type and improves the detection efficiency.

[0089] In addition, the bracket 1 is also equipped with a first connecting plate 21 and a second connecting plate 31, which can set different and fixed working positions for the first shooting component 2 and the second shooting component 3. When switching between the first shooting component 2 and the second shooting component 3, the assembly of the first shooting component 2 and the second shooting component 3 can be completed by installing the shooting device on the first connecting plate 21 or the second connecting plate 31.

[0090] If cost is not a consideration, in other embodiments, the first shooting assembly 2 and the second shooting assembly 3 may not share a shooting device, and corresponding shooting devices may be installed on multiple first connecting plates 21 and multiple second connecting plates 31, respectively, so that the first shooting assembly 2 and the second shooting assembly 3 can be put into working state at any time, which can further shorten the cutting and changing time and further improve the inspection efficiency.

[0091] One or more photographing devices may be installed on each first connecting plate 21. One or more photographing devices may also be installed on each second connecting plate 31.

[0092] The shooting device may be a CCD camera or other types of cameras.

[0093] As shown in Figures 1 and 2, in some embodiments, the first camera assembly 2 includes four camera devices, each of which is divided into two groups, with the two groups of camera devices arranged opposite each other. This arrangement facilitates capturing the four sides of the rectangular first inspection object 10, facilitates the use of the optical imaging regular reflection principle to achieve capture, and does not interfere with the arrangement of the camera devices of the second camera assembly 3.

[0094] In other embodiments, the number of photographing devices in the first photographing assembly 2 may also be two, three, five or more.

[0095] In some embodiments, the central axes of the four photographing devices are collinear with the centers of the side surfaces of the first inspected component 10 that they photograph. This arrangement is beneficial to improving the imaging quality of each side surface.

[0096] As shown in Figure 9, in some embodiments, the angle between the central axis of the camera device and a line perpendicular to the side surface of the first inspection part 10 being photographed by the camera device is less than 90°. This arrangement helps to improve the overall imaging quality of the corresponding side surfaces, and in particular, the imaging quality of the edges of the first inspection part 10 is better, so as to facilitate the observation of defects such as wire drawing and burrs on the edges of the first inspection part 10.

[0097] As shown in Figures 10 and 11, in some embodiments, the depth of field D of the camera device is greater than or equal to the larger value of d1*sinα and d2*sinβ, where d1 is the length of a first cross-section of the first inspected component 10 perpendicular to the vertical direction, d2 is the width of the first cross-section, γ = arctand1 / 2d2, and σ = arctand2 / 2d1. This configuration effectively ensures that the imaging range of the camera device encompasses the entire first and second side surfaces, resolving the issue of unclear imaging and the inability to determine whether a defect exists due to a small imaging area.

[0098] In some embodiments, the second photographing assembly 3 includes four photographing devices evenly spaced along the circumference, which facilitates photographing the cylindrical second inspected object 20 without interfering with the arrangement of the photographing devices of the first photographing assembly 2 .

[0099] In other embodiments, the number of photographing devices in the second photographing assembly 3 may also be two, three, five or more.

[0100] As shown in Figures 5 to 7, in some embodiments, the battery appearance inspection device also includes a first adjustment component 5, the first adjustment component 5 includes a first adjustment member 51, a second adjustment member 52 and a third adjustment member 53, the first shooting component 2 and / or the second shooting component 3 includes a shooting device, the first adjustment member 51 is configured to adjust the position of the shooting device in a first direction, the second adjustment member 52 is configured to adjust the position of the shooting device in a second direction, and the third adjustment member 53 is configured to adjust the position of the shooting device in a third direction. The first direction is parallel to the vertical direction, the second direction is the direction approaching or away from the first inspected component 10 or the second inspected component 20, and the second direction is perpendicular to the first direction, and the third direction is perpendicular to both the first direction and the second direction.

[0101] By setting the first adjusting member 51, the second adjusting member 52 and the third adjusting member 53, the position adjustment of the photographing device in three two perpendicular directions can be achieved, so that the posture of the photographing device can be adjusted in all directions to take high-quality photos, providing a basis for improving the quality of appearance inspection.

[0102] In some embodiments, the first shooting assembly 2 and the second shooting assembly 3 both include a first adjustment member 51, a second adjustment member 52 and a third adjustment member 53, so that the shooting devices in the first shooting assembly 2 and the second shooting assembly 3 can both be adjusted in three two perpendicular directions.

[0103] In other embodiments, the first photographing assembly 2 includes a second adjusting member 52 and a third adjusting member 53 , and the second photographing assembly 3 includes a first adjusting member 51 and a second adjusting member 52 .

[0104] This arrangement enables the shooting device in the first shooting assembly 2 to be positionally adjusted in the second and third directions, and the shooting device in the second shooting assembly 3 to be adjusted in the first and second directions.

[0105] When the thickness of the first inspected part 10 is relatively small, after the camera device is set at a preset height, even if the height of the first inspected part 10 varies slightly, all images in the height direction can be captured. Therefore, the position adjustment of the first camera assembly 2 in the first direction for photographing the first inspected part 10 can be omitted, thereby simplifying the structure of the first adjustment assembly 5 for adjusting the camera device in the first camera assembly 2, which is also conducive to simplifying the assembly process, shortening the cutting and changing time, and improving the inspection efficiency.

[0106] Since the second inspected part 20 is cylindrical in shape, it is not very necessary to adjust the position of the photographing device in the second photographing assembly 3 in the third direction. By setting the photographing device in the second photographing assembly 3 to be positionally adjustable in the first direction and the second direction, the structure of the first adjustment assembly 5 for adjusting the photographing device in the second photographing assembly 3 can be simplified, which is also conducive to simplifying the assembly process, shortening the time for cutting and changing the mold, and improving the inspection efficiency.

[0107] In some embodiments of the present application, a first adjustment assembly 5 including a first adjustment member 51, a second adjustment member 52, and a third adjustment member 53 is provided, so that the first adjustment assembly 5 can achieve position adjustment in three directions perpendicular to each other, thereby providing support for the first shooting assembly 2 and the second shooting assembly 3 to achieve position adjustment in three directions; at the same time, the first shooting assembly 2 and the second shooting assembly 3 can freely choose to configure one or more of the first adjustment member 51, the second adjustment member 52, and the third adjustment member 53 according to the characteristics of the shooting object, thereby simplifying the structure and installation.

[0108] In some embodiments, the number of the first adjustment components 5 is the same as the number of the photographing devices, so that the position of each photographing device can be independently adjusted by the first adjustment components 5 .

[0109] By configuring a dedicated first adjustment component 5 for each camera, the position of each camera can be independently adjusted, so that the position adjustment of each camera is not limited by the position arrangement of other cameras, which is conducive to improving the quality of shooting.

[0110] In some embodiments, the first adjusting member 51 is provided with a first mounting hole 511 for connecting to the bracket 1 and a second mounting hole 512 for connecting to the second adjusting member 52, the second adjusting member 52 is provided with a third mounting hole 521 for connecting to the first adjusting member 51 and a fourth mounting hole 522 for connecting to the photographing device, the third adjusting member 53 is provided with a fifth mounting hole 531 for connecting to the bracket 1 and a sixth mounting hole 532 for connecting to the second adjusting member 52, wherein the second mounting hole 512 is an oblong hole whose length direction extends along the first direction, the fourth mounting hole 522 is an oblong hole whose length direction extends along the second direction, and the sixth mounting hole 532 is an oblong hole whose length direction extends along the third direction.

[0111] The first adjusting member 51 is connected to the bracket 1 through the first mounting hole 511, the second adjusting member 52 is connected to the first adjusting member 51 through the second mounting hole 512 and the third mounting hole 521, the third adjusting member 53 is connected to the bracket 1 through the fifth mounting hole 531, and the third adjusting member 53 is connected to the second adjusting member 52 through the sixth mounting hole 532.

[0112] In some embodiments, the first adjustment component 5 also includes a first connecting member connecting the first adjustment member 51 and the bracket 1, a second connecting member connecting the second adjustment member 52 and the first adjustment member 51, a third connecting member connecting the third adjustment member 53 and the bracket 1, a fourth connecting member connecting the third adjustment member 53 and the second adjustment member 52, and a fifth connecting member connecting the second adjustment member 52 and the shooting device.

[0113] The bracket 1 may be provided with a first hole, and a first connecting member may pass through the first hole and the first mounting hole 511 to connect the first adjusting member 51 to the bracket 1. The second connecting member may pass through the second mounting hole 512 and the third mounting hole 521 to connect the second adjusting member 52 to the first adjusting member 51. The bracket 1 may be provided with a second hole, and a third connecting member may pass through the second hole and the fifth mounting hole 531 to connect the third adjusting member 53 to the bracket 1. The second adjusting member 52 may be provided with a tenth mounting hole 524, and a fourth connecting member may pass through the sixth mounting hole 532 and the tenth mounting hole 524 to connect the third adjusting member 53 to the second adjusting member 52. The camera device may be provided with a third hole, and a fifth connecting member may pass through the third hole and the fourth mounting hole 522 to connect the second adjusting member 52 to the camera device.

[0114] The first connecting member, the second connecting member, the third connecting member, the fourth connecting member and the fifth connecting member can be bolts, screws or pins.

[0115] In some embodiments, the first adjusting member 51 is provided with a seventh mounting hole 513 connected to the second adjusting member 52, the seventh mounting hole 513 is a circular hole, and the second mounting hole 512 is arc-shaped; and / or, the length direction of the second mounting hole 512 is parallel to the second direction; and / or, the third adjusting member 53 is provided with an eighth mounting hole 533 connected to the second adjusting member 52, the eighth mounting hole 533 is a circular hole, and the sixth mounting hole 532 is arc-shaped.

[0116] By providing the seventh mounting hole 513, the first adjusting member 51 and the second adjusting member 52 can be connected through the second mounting hole 512 and the seventh mounting hole 513 respectively. The seventh mounting hole 513 is a circular hole and the second mounting hole 512 is arc-shaped. The first adjusting member 51 can be swung relative to the second adjusting member 52 along the length direction of the second mounting hole 512 with the connection position of the seventh mounting hole 513 as the center, thereby adjusting the position of the shooting device in the first direction.

[0117] By setting the eighth mounting hole 533, the second adjusting member 52 and the third adjusting member 53 can be connected through the sixth mounting hole 532 and the eighth mounting hole 533 respectively. The eighth mounting hole 533 is a circular hole and the sixth mounting hole 532 is arc-shaped. The third adjusting member 53 can be swung relative to the second adjusting member 52 along the length direction of the sixth mounting hole 532 with the connection position of the eighth mounting hole 533 as the center, so as to adjust the position of the shooting device in the third direction.

[0118] In some embodiments, the first adjustment assembly 5 further includes a sixth connecting member connecting the first adjustment member 51 and the second adjustment member 52 and a seventh connecting member connecting the third adjustment member 53 and the second adjustment member 52 .

[0119] The second adjusting member 52 is provided with a ninth mounting hole 523 and an eleventh mounting hole 525. The sixth connecting member passes through the seventh mounting hole 513 and the ninth mounting hole 523 to connect the first adjusting member 51 and the second adjusting member 52. The seventh connecting member passes through the eighth mounting hole 533 and the eleventh mounting hole 525 to connect the third adjusting member 53 and the second adjusting member 52.

[0120] In some embodiments, the fourth mounting hole 522 is in an elongated shape.

[0121] In some embodiments, a scale is provided at at least one of the second mounting hole 512, the fourth mounting hole 522, and the sixth mounting hole 532. By providing the scale, the size of the position adjustment can be more accurately controlled, which is conducive to achieving more precise adjustment.

[0122] In some embodiments, the battery appearance inspection device further includes a first light source 6 and a second light source 7 mounted on the bracket 1 . The first light source 6 is in the shape of a long strip, and the second light source 7 is in the shape of a circular ring.

[0123] By providing a first strip-shaped light source 6 and a second ring-shaped light source 7, strip light and ring light can be provided to the first shooting component 2 and the second shooting component 3 respectively, thereby improving the brightness of the side of the inspected part, increasing the contrast between the defective part and the non-defective part, and improving the imaging quality.

[0124] In some embodiments, there are two first light sources 6 , which are arranged opposite to each other. The first detected component 10 is in the shape of a cuboid, and the first light source 6 is substantially parallel to one of the diagonals of the first detected component 10 .

[0125] By providing two first light sources 6 and arranging the two first light sources 6 relative to each other and substantially parallel to one of the diagonals of the first detection component 10 , the imaging requirements can be substantially met. Compared with the solution of providing four first light sources, the cost can be greatly saved.

[0126] In some embodiments, the battery appearance inspection device also includes a second adjustment component 8, which is configured to adjust the position of the first light source 6 in at least one of a fourth direction, a fifth direction, and a sixth direction, where the fourth direction is parallel to the vertical direction, the fifth direction is perpendicular to the sixth direction, and both are perpendicular to the fourth direction.

[0127] By setting the second adjustment component 8, the position of the first light source 6 can be adjusted in three directions perpendicular to each other, so that the detection device can adjust the position of the first light source 6 according to the requirements of the first shooting component 2 and the second shooting component 3 to achieve better imaging effects.

[0128] As shown in Figure 8, in some embodiments, the second adjustment component 8 includes a mounting base 81, a first mounting plate 82 and a second mounting plate 83, the first light source 6 is installed on the mounting base 81, the mounting base 81 is provided with a first connecting hole 811 for connecting to the first mounting plate 82, the first mounting plate 82 is provided with a second connecting hole 821 for connecting to the mounting base 81 and a third connecting hole 822 for connecting to the second mounting plate 83, the second mounting plate 83 is provided with a fourth connecting hole 831 for connecting to the first mounting plate 82 and a fifth connecting hole 832 for connecting to the bracket 1, the first connecting hole 811 is an oblong hole whose length direction extends along the fifth direction, the second connecting hole 821 is an oblong hole whose length direction extends along the fourth direction, and at least one of the third connecting hole 822 and the fourth connecting hole 831 is an oblong hole whose length direction extends along the sixth direction.

[0129] By setting the first connecting hole 811 as an oblong hole, the position of the first light source 6 in the fifth direction can be adjusted; by setting the second connecting hole 821 as an oblong hole, the position of the first light source 6 in the fourth direction can be adjusted; by setting at least one of the third connecting hole 822 and the fourth connecting hole 831 as an oblong hole, the position of the first light source 6 in the sixth direction can be adjusted.

[0130] In some embodiments, the first light source 6 is disposed below the first camera assembly 2 .

[0131] By arranging the first light source 6 below the first shooting component 2, interference between the first light source 6 and the first shooting component 2 can be avoided. At the same time, it is also beneficial to use the first light source 6 to illuminate the first inspection component 10 and the second inspection component 20 from below, so as to improve the imaging quality of the first shooting component 2 and the second shooting component 3.

[0132] In some embodiments, the battery appearance inspection device further includes a third adjustment component 9 , which is configured to adjust the position of the second light source 7 in the vertical direction.

[0133] By providing the third adjustment component 9 , the position of the second light source 7 in the vertical direction can be adjusted, so that the position of the second light source 7 can be adjusted according to needs.

[0134] As shown in Figure 3, in some embodiments, the third adjustment component 9 includes a third mounting plate 91 and a fourth mounting plate 92. The third mounting plate 91 is mounted on the outer surface of the second light source 7. The fourth mounting plate 92 is provided with a fifth connecting hole. The fifth connecting hole is an oblong hole. The length direction of the fifth connecting hole extends in the vertical direction. The fourth mounting plate 92 is connected to the third mounting plate 91 through the fifth connecting hole. The fourth mounting plate 92 is mounted on the bracket 1.

[0135] The third adjustment component 9 can also include an eighth connecting member and a ninth connecting member. The third mounting plate 91 is provided with a sixth connecting hole and a seventh connecting hole. The second light source 7 is provided with an eighth connecting hole. The eighth connecting member passes through the sixth connecting hole and the eighth connecting hole to connect the third mounting plate 91 and the second light source 7. The ninth connecting member passes through the fifth connecting hole and the seventh connecting hole to connect the fourth mounting plate 92 and the third mounting plate 91.

[0136] The eighth connecting member and the ninth connecting member can be bolts, screws or pins.

[0137] In the embodiment of the battery appearance inspection device provided herein, the first inspected component 10 and the second inspected component 20 can be battery components, such as terminals or explosion-proof valves, or the batteries themselves. Of course, the inspected components are not limited to batteries and can also be other products or components requiring appearance inspection.

[0138] The structure of an embodiment of a battery appearance inspection device provided by the present application is described below with reference to Figures 1 to 11 .

[0139] As shown in FIG. 1 and FIG. 2 , the battery appearance inspection device includes a bracket 1 and four first shooting components 2 and four second shooting components 3 mounted on the bracket 1 .

[0140] The four first camera assemblies 2 are divided into two groups, each with two camera devices, and the two groups of first camera assemblies 2 are arranged opposite each other. The four second camera assemblies 3 are evenly spaced along the circumference. One group of first camera assemblies 2 is located between two second camera assemblies 3, and the other group of first camera assemblies 2 is located between another two second camera assemblies 3.

[0141] As shown in FIG3 , the battery appearance inspection device further includes a first adjustment component 5 , a first light source 6 , a second light source 7 , a second adjustment component 8 and a third adjustment component 9 .

[0142] The bracket 1 is shaped like an octagonal prism. It comprises a bracket body 11 and a cover plate 12 mounted above the bracket body 11. The bracket body 11 is of a certain height and has a storage space within it. The first camera assembly 2, the second camera assembly 3, the first adjustment assembly 5, the first light source 6, the second light source 7, the second adjustment assembly 8, and the third adjustment assembly 9 are all disposed below the cover plate 12 and within the storage space of the bracket body 11, thereby preventing interference from external light sources.

[0143] The first camera assembly 2 includes two first connecting plates 21, mounted opposite each other on the bracket 1. Two camera devices are mounted on each first connecting plate 21. The second camera assembly 3 includes four second connecting plates 31, mounted equally spaced along the circumference of the bracket 1. Each second connecting plate 31 is mounted on a camera device.

[0144] The first adjustment assembly 5 is used to adjust the installation position and angle of the camera. Each camera is equipped with a set of first adjustment assemblies 5, but the structure of the first adjustment assembly 5 corresponding to the camera in the first camera assembly 2 is different from that of the first adjustment assembly 5 corresponding to the camera in the second camera assembly 3.

[0145] Two long strip-shaped first light sources 6 are arranged opposite to each other and are respectively mounted on the bracket 1 through corresponding second adjustment components 8. A circular ring-shaped second light source 7 is set at the center of the bracket 1 and is mounted on the bracket 1 through a third adjustment component 9.

[0146] The third adjustment assembly 9 includes a third mounting plate 91, a fourth mounting plate 92, an eighth connecting member, and a ninth connecting member. The third mounting plate 91 is provided with a sixth connecting hole and a seventh connecting hole. The second light source 7 is provided with an eighth connecting hole. The eighth connecting member passes through the sixth and eighth connecting holes to connect the third mounting plate 91 to the outer surface of the second light source 7. The fourth mounting plate 92 is provided with a fifth connecting hole. The fifth connecting hole is an oblong hole, and the length direction of the fifth connecting hole extends in the vertical direction. The ninth connecting member passes through the fifth and seventh connecting holes to connect the fourth mounting plate 92 and the third mounting plate 91. The fourth mounting plate 92 is also provided with a tenth connecting hole. The tenth connecting member passes through the tenth connecting hole and the mounting hole on the bracket 1 to mount the fourth mounting plate 92 on the bracket 1.

[0147] As shown in FIG4 , the identification device 4 is signal-connected to the first shooting component 2 and the second shooting component 3 to receive photos taken by the first shooting component 2 and the second shooting component 3 and identify defects of the first inspection component 10 and the second inspection component 20 based on the photos.

[0148] As shown in Figures 5, 6, and 7, the first adjustment assembly 5 includes a first adjustment member 51, a second adjustment member 52, and a third adjustment member 53. The first adjustment member 51 can be used to adjust the position of the camera in the first direction; the second adjustment member 52 can be used to adjust the position of the camera in the second direction; and the third adjustment member 53 can be used to adjust the position of the camera in the third direction.

[0149] The first adjusting member 51 and the third adjusting member 53 are both block-shaped. The second adjusting member 52 is U-shaped. The first adjusting member 51 is mounted on one side of the second adjusting member 52, with the opening of the second adjusting member 52 facing downward. The third adjusting member 53 is mounted on top of the second adjusting member 52, and the camera is installed inside the U-shaped structure.

[0150] Although the complete structure of the first adjustment assembly 5 includes three adjustment members, namely the first adjustment member 51, the second adjustment member 52 and the third adjustment member 53, when assembling the shooting device in the first shooting assembly 2, only the second adjustment member 52 and the third adjustment member 53 can be installed, and the first adjustment member 51 does not need to be installed; when assembling the shooting device in the second shooting assembly 3, only the first adjustment member 51 and the second adjustment member 52 can be installed, and the third adjustment member 53 does not need to be installed, or even if the third adjustment member 53 is still installed on the second adjustment member 52, the third adjustment member 53 is not connected to the bracket 1, otherwise the vertical position of the shooting device cannot be adjusted.

[0151] As shown in FIG5 , a first mounting hole 511 is provided on the top of the first adjusting member 51. The first adjusting member 51 is also provided with a second mounting hole 512 and a seventh mounting hole 513 that pass through the left and right sides.

[0152] The first mounting hole 511 and the seventh mounting hole 513 are both circular holes. The second mounting hole 512 is an oblong hole with its length extending along a first direction and having an arc shape. The first direction is parallel to the vertical direction.

[0153] As shown in FIG6 , a third mounting hole 521 and a ninth mounting hole 523 are provided on the side of the second adjusting member 52 , and a fourth mounting hole 522 , a tenth mounting hole 524 and an eleventh mounting hole 525 are provided on the top of the second adjusting member 52 .

[0154] The third mounting hole 521, the ninth mounting hole 523, the tenth mounting hole 524, and the eleventh mounting hole 525 are all circular holes. The fourth mounting hole 522 is an oblong hole with its length extending in a second direction. The fourth mounting hole 522 is in an elongated strip shape. The second direction extends in a direction toward and away from the first detected component 10 and the second detected component 20. The second direction is perpendicular to the first direction.

[0155] As shown in FIG. 7 , the top of the third adjusting member 53 is provided with two fifth mounting holes 531 , a sixth mounting hole 532 and an eighth mounting hole 533 that pass through the top and bottom.

[0156] The fifth mounting hole 531 and the eighth mounting hole 533 are both circular holes. The sixth mounting hole 532 is an oblong hole with its length extending along a third direction and having an arc shape. The third direction is perpendicular to both the first direction and the second direction.

[0157] The following describes the connection method between the three adjustment members and the bracket 1.

[0158] The bracket 1 is provided with a first hole, and the first connecting member passes through the first hole and the first mounting hole 511 to connect the first adjusting member 51 and the bracket 1 .

[0159] The second connecting member passes through the second mounting hole 512 and the third mounting hole 521 , and the sixth connecting member passes through the seventh mounting hole 513 and the ninth mounting hole 523 to connect the first adjusting member 51 and the second adjusting member 52 .

[0160] The photographing device is provided with a third hole, and the fifth connecting member passes through the fourth mounting hole 522 and the third hole to connect the second adjusting member 52 and the photographing device.

[0161] The fourth connecting member passes through the sixth mounting hole 532 and the tenth mounting hole 524 , and the seventh connecting member passes through the eighth mounting hole 533 and the eleventh mounting hole 525 to connect the third adjusting member 53 and the second adjusting member 52 .

[0162] The bracket 1 is provided with a second hole, and the third connecting member passes through the second hole and the fifth mounting hole 531 to connect the third adjusting member 53 and the bracket 1 .

[0163] As shown in Figure 8, the second adjustment assembly 8 includes a mounting seat 81, a first mounting plate 82 and a second mounting plate 83. The first mounting plate 82 is L-shaped.

[0164] The first light source 6 is mounted on the mounting base 81. The mounting base 81 is provided with a first connection hole 811, which is an oblong hole whose length extends along the fifth direction. The first mounting plate 82 is provided with a second connection hole 821 and a third connection hole 822. The second connection hole 821 is an oblong hole whose length extends along the vertical direction, while the third connection hole 822 is a circular hole. The second mounting plate 83 is provided with a fourth connection hole 831 and a fifth connection hole 832. The fourth connection hole 831 is an oblong hole extending along the sixth direction, while the fifth connection hole 832 is a circular hole.

[0165] The connecting member passes through the second connecting hole 821 and the first connecting hole 811 to connect the first mounting plate 82 and the mounting base 81. The connecting member passes through the third connecting hole 822 and the fourth connecting hole 831 to connect the first mounting plate 82 and the second mounting plate 83. The connecting member passes through the fifth connecting hole 832 and the hole in the bracket 1 to connect the second mounting plate 83 and the bracket 1.

[0166] As shown in Figure 9, the central axes of the four imaging devices used to image the first inspection object 10 are collinear with the centers of the side surfaces of the first inspection object 10 they are imaging. Furthermore, the angles α and β between the central axes of the imaging devices and the perpendicular lines to the side surfaces of the first inspection object 10 that the imaging devices are imaging are both less than 90°.

[0167] As shown in FIG. 10 and FIG. 11 , the depth of field D of the shooting device needs to satisfy the condition: D ≥ max (d1*sinγ, d2*sinσ).

[0168] Wherein, d1 is the length of the first cross section of the first detected component 10 perpendicular to the vertical direction, d2 is the width of the first cross section, γ=arctan(d1 / 2d2), σ=arctan(d2 / 2d1).

[0169] This setting can better balance the relationship between the position of the shooting device, the adjustment range of the first adjustment component, the length and width of the first inspected part, and the model parameters of the shooting device, and obtain better imaging effects, thereby improving the quality of appearance inspection.

[0170] The above description of the various embodiments tends to emphasize the differences between the various embodiments. The same or similar aspects can be referenced with each other and will not be repeated herein for the sake of brevity.

[0171] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and components may be substituted with equivalents without departing from the scope of the present application. In particular, the various technical features described in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions within the scope of the claims.

Claims

1. A battery appearance inspection device, comprising: Bracket (1); A first photographing component (2) is mounted on the bracket (1), wherein the first photographing component (2) is configured to take a photograph of the appearance of the first inspected component (10); a second photographing assembly (3) mounted on the bracket (1), the second photographing assembly (3) being configured to take a photograph of the appearance of a second inspected component (20), the first inspected component (10) and the second inspected component (20) having different shapes; and An identification device (4) is signal-connected to the first shooting component (2) and the second shooting component (3), and the identification device (4) is configured to identify appearance defects of the first inspected component (10) based on the photos taken by the first shooting component (2), and to identify appearance defects of the second inspected component (20) based on the photos taken by the second shooting component (3).

2. The battery appearance inspection device according to claim 1, wherein: The first detected part (10) is in the shape of a rectangular parallelepiped, and the second detected part (20) is in the shape of a cylinder.

3. The battery appearance inspection device according to claim 2, wherein: The first shooting assembly (2) includes a plurality of first connecting plates (21), the second shooting assembly (3) includes a plurality of second connecting plates (31), the first connecting plates (21) and the second connecting plates (31) are both mounted on the bracket (1), and the battery appearance inspection device includes a plurality of shooting devices, the shooting devices are configured to be detachably mounted on the first connecting plates (21) and detachably mounted on the second connecting plates (31).

4. The battery appearance inspection device according to claim 3, wherein: The first shooting assembly (2) comprises four shooting devices, and the four shooting devices are divided into two groups, and the two groups of shooting devices are arranged opposite to each other.

5. The battery appearance inspection device according to claim 4, wherein: The central axes of the four photographing devices are respectively collinear with the center of the side surface of the first detected component (10) photographed by them.

6. The battery appearance inspection device according to claim 5, wherein: The angle between the central axis of the photographing device and a vertical line perpendicular to the side surface of the first detected component (10) photographed by the photographing device is less than 90°.

7. The battery appearance inspection device according to any one of claims 4 to 6, wherein: The depth of field D of the photographing device is greater than or equal to the larger value of d1*sinγ and d2*sinσ, wherein d1 is the length of a first cross section of the first inspected part (10) perpendicular to the vertical direction, d2 is the width of the first cross section, γ=arctan(d1 / 2d2), σ=arctan(d2 / 2d1).

8. The battery appearance inspection device according to any one of claims 3 to 7, wherein: The second shooting assembly (3) comprises four shooting devices which are evenly spaced apart in the circumferential direction.

9. The battery appearance inspection device according to any one of claims 2 to 8, wherein: The invention also comprises a first adjustment component (5), wherein the first adjustment component (5) comprises a first adjustment member (51), a second adjustment member (52) and a third adjustment member (53); the first shooting component (2) and / or the second shooting component (3) comprises a shooting device; the first adjustment member (51) is configured to adjust the position of the shooting device in a first direction; the second adjustment member (52) is configured to adjust the position of the shooting device in a second direction; and the third adjustment member (53) is configured to adjust the position of the shooting device in a third direction; the first direction is parallel to the vertical direction; the second direction is a direction approaching or moving away from the first detected component (10) or the second detected component (20); the second direction is perpendicular to the first direction; and the third direction is perpendicular to both the first direction and the second direction.

10. The battery appearance inspection device according to claim 9, wherein: The first shooting component (2) comprises the second adjusting component (52) and the third adjusting component (53), and the second shooting component (3) comprises the first adjusting component (51) and the second adjusting component (52).

11. The battery appearance inspection device according to claim 9 or 10, wherein: The number of the first adjustment components (5) is the same as the number of the photographing devices, so that the position of each photographing device can be independently adjusted by the first adjustment components (5).

12. The battery appearance inspection device according to any one of claims 9 to 11, wherein: The first adjusting member (51) is provided with a first mounting hole (511) for connecting with the bracket (1) and a second mounting hole (512) for connecting with the second adjusting member (52); the second adjusting member (52) is provided with a third mounting hole (521) for connecting with the first adjusting member (51) and a fourth mounting hole (522) for connecting with the photographing device; the third adjusting member (53) is provided with a fifth mounting hole (531) for connecting with the bracket (1) and a sixth mounting hole (532) for connecting with the second adjusting member (52); wherein the second mounting hole (512) is an oblong hole whose length direction extends along the first direction; the fourth mounting hole (522) is an oblong hole whose length direction extends along the second direction; and the sixth mounting hole (532) is an oblong hole whose length direction extends along the third direction.

13. The battery appearance inspection device according to claim 12, wherein: The first adjusting member (51) is provided with a seventh mounting hole (513) connected to the second adjusting member (52), the seventh mounting hole (513) is a circular hole, and the second mounting hole (512) is arc-shaped; and / or the length direction of the second mounting hole (512) is parallel to the second direction; and / or the third adjusting member (53) is provided with an eighth mounting hole (533) connected to the second adjusting member (52), the eighth mounting hole (533) is a circular hole, and the sixth mounting hole (532) is arc-shaped.

14. The battery appearance inspection device according to claim 12 or 13, wherein: At least one of the second mounting hole (512), the fourth mounting hole (522) and the sixth mounting hole (532) is provided with a scale.

15. The battery appearance inspection device according to any one of claims 1 to 14, wherein: It also comprises a first light source (6) and a second light source (7) mounted on the bracket (1); the first light source (6) is in the shape of a long strip, and the second light source (7) is in the shape of a circular ring.

16. The battery appearance inspection device according to claim 15, wherein: The number of the first light sources (6) is two, the two first light sources (6) are arranged opposite to each other, the first detected component (10) is in the shape of a rectangular parallelepiped, and the first light source (6) is substantially parallel to one of the diagonals of the first detected component (10).

17. The battery appearance inspection device according to claim 15 or 16, wherein: It also includes a second adjustment component (8), which is configured to adjust the position of the first light source (6) in at least one of a fourth direction, a fifth direction and a sixth direction, wherein the fourth direction is parallel to the vertical direction, the fifth direction is perpendicular to the sixth direction and both are perpendicular to the fourth direction.

18. The battery appearance inspection device according to claim 17, wherein: The second adjustment component (8) comprises a mounting seat (81), a first mounting plate (82) and a second mounting plate (83); the first light source (6) is mounted on the mounting seat (81); the mounting seat (81) is provided with a first connecting hole (811) for connecting with the first mounting plate (82); the first mounting plate (82) is provided with a second connecting hole (821) for connecting with the mounting seat (81) and a third connecting hole (822) for connecting with the second mounting plate (83); the second mounting plate (83) is provided with a fourth connecting hole (831) for connecting with the first mounting plate (82) and a fifth connecting hole (832) for connecting with the bracket (1); the first connecting hole (811) is an oblong hole whose length direction extends along the fifth direction; the second connecting hole (821) is an oblong hole whose length direction extends along the fourth direction; and at least one of the third connecting hole (822) and the fourth connecting hole (831) is an oblong hole whose length direction extends along the sixth direction.

19. The battery appearance inspection device according to any one of claims 15 to 18, wherein: The first light source (6) is arranged below the first shooting component (2).

20. The battery appearance inspection device according to any one of claims 15 to 19, wherein: It also comprises a third adjustment component (9), wherein the third adjustment component (9) is configured to adjust the position of the second light source (7) in the vertical direction.

21. A battery manufacturing device, comprising the battery appearance inspection device according to any one of claims 1 to 20.

Images