Battery appearance detection device and battery manufacturing equipment

Abstract

The embodiment of the invention provides a battery appearance detection device and battery manufacturing equipment, the battery appearance detection device comprises a support, a first shooting assembly, a second shooting assembly and a recognition device, the first shooting assembly is installed on the support, the first shooting assembly is configured to shoot an appearance picture of a first detected piece, and the recognition device is configured to recognize the appearance picture of the first detected piece; the second shooting assembly is installed on the support, the second shooting assembly is configured to shoot an appearance picture of a second detected piece, the first detected piece and the second detected piece are different in shape, and the recognition device is in signal connection with the first shooting assembly and the second shooting assembly. The recognition device is configured to recognize the appearance defect of the first detected part according to the picture taken by the first shooting assembly and recognize the appearance defect of the second detected part according to the picture taken by the second shooting assembly. The battery manufacturing equipment comprises the battery appearance detection device.

Description

Technical Field

[0001] The present application relates to the technical field of batteries, and in particular to a battery appearance detection device and a battery manufacturing device. Background Art

[0002] Energy conservation and emission reduction are the keys to the sustainable development of the automotive industry. Electric vehicles have become an important part of the sustainable development of the automotive industry due to their advantages of energy conservation and environmental protection. For electric vehicles, battery technology is an important factor related to their development.

[0003] A battery includes battery cells, and pole columns are provided on the battery cells. The manufacturing quality of the pole columns directly affects the overall manufacturing quality of the battery and the safety in use of the battery.

[0004] The above statements are only used to provide background technical information related to the present application, and do not necessarily constitute prior art. Summary of the Invention

[0005] The present application provides a battery appearance detection device and a battery manufacturing device, which can effectively improve the accuracy of appearance detection.

[0006] In a first aspect, the present application provides a battery appearance detection 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 and is configured to shoot an appearance photo of a first detected part. The second shooting component is installed on the bracket and is configured to shoot an appearance photo of a second detected part. The shapes of the first detected part and the second detected part are different. The identification device is in signal connection with the first shooting component and the second shooting component, and is configured to identify appearance defects of the first detected part according to the photo taken by the first shooting component, and identify appearance defects of the second detected part according to the photo taken by the second shooting component.

[0007] By providing the first shooting component and the second shooting component, the first detected part and the second detected part can be detected respectively, improving the compatibility of the detection device with different types of detected parts, expanding the applicable range of the detection device, reducing the time for switching models during production, and being beneficial to improving the efficiency of appearance detection and production efficiency.

[0008] By detecting the first detected part and the second detected part respectively through the first shooting component and the second shooting component, dedicated shooting components can be provided for the first detected part and the second detected part respectively, which is beneficial to improving the adaptability between the shooting component and the detected part, and overcoming the problems of poor imaging effect and low detection accuracy caused by poor adaptability.

[0009] By setting up the recognition device, the appearance defects of the first detected part and the second detected part can be recognized based on the photos taken by the first shooting component and the second shooting component, thereby providing a basis for judgment for subsequent assembly or forming processes, and avoiding unqualified detected parts from mixing into the downstream, which affects the overall manufacturing quality of the battery.

[0010] In some embodiments, the first detected part is in the shape of a cuboid, and the second detected part is in the shape of a cylinder.

[0011] The cuboid shape and the cylinder shape are two relatively common shapes of the detected parts. In other embodiments, the detected part can also be in the shape of a semi-cylinder, a triangular prism, or other shapes. Parameters such as the number and installation positions of the first shooting component and the second shooting component can be adjusted according to the shape of the detected part to improve the imaging quality and the accuracy of appearance detection.

[0012] In some embodiments, the first shooting component includes a plurality of first connecting plates, the second shooting component includes a plurality of second connecting plates, both the first connecting plates and the second connecting plates are installed on the bracket, and the battery appearance detection device includes a plurality of shooting devices, and the shooting devices are configured to be detachably installed on the first connecting plates and can be detachably installed on the second connecting plates.

[0013] By configuring the shooting device to be detachably installable on both the first connecting plate and the second connecting plate, the shooting device can be both a component of the first shooting component and a component of the second shooting component, achieving the purpose of sharing the shooting device between the first shooting component and the second shooting component, which is beneficial to cost control.

[0014] In some embodiments, the first shooting component includes four shooting devices, and the four shooting devices are evenly divided into two groups, and the two groups of shooting devices are arranged oppositely. Such an arrangement facilitates shooting the four side surfaces of the cuboid-shaped first detected part, facilitates applying the principle of positive reflection of optical imaging for shooting, and does not interfere with the arrangement of the shooting devices of the second shooting component at the same time.

[0015] In some embodiments, the central axes of the four shooting devices are respectively collinear with the centers of the side surfaces of the first detected part they shoot. Such an arrangement is beneficial to improving the imaging quality of each side surface.

[0016] In some embodiments, the included angle between the central axis of the shooting device and the perpendicular line perpendicular to the side surface of the first detected part shot by the shooting device is less than 90°. Such an arrangement is beneficial to making the overall imaging quality of the corresponding side surface relatively high, especially the imaging quality of the edge of the first detected part is better, so as to observe whether there are defects such as wire drawing and burrs at the edge of the first detected part.

[0017] In some embodiments, the depth of field D of the photographing device is greater than or equal to the larger value of d1*sinα and d2*sinβ, where d1 is the length of the first cross-section of the first detected part perpendicular to the vertical direction, d1 is the width of the first cross-section, γ = arctan(d1 / 2d2), and σ = arctan(d2 / 2d1). Such a setting can effectively ensure that the imaging range of the photographing device includes the entire ranges of the first side and the second side, solving the problem of unclear imaging caused by a small photographing area and making it impossible to determine whether there are defects.

[0018] In some embodiments, the second photographing assembly includes four photographing devices evenly spaced along the circumferential direction. Such a setting facilitates photographing a cylindrical second detected part and does not interfere with the arrangement of the photographing devices of the first photographing assembly.

[0019] In some embodiments, the battery appearance detection device further includes a first adjustment assembly. The first adjustment assembly includes a first adjustment member, a second adjustment member, and a third adjustment member. The first photographing assembly and / or the second photographing assembly includes a photographing device. The first adjustment member is configured to adjust the position of the photographing device in the first direction, the second adjustment member is configured to adjust the position of the photographing device in the second direction, and the third adjustment member is configured to adjust the position of the photographing device in the third direction. The first direction is parallel to the vertical direction, the second direction is the direction of approaching or moving away from the first detected part or the second detected part, and the second direction is perpendicular to the first direction. The third direction is perpendicular to both the first direction and the second direction.

[0020] By providing the first adjustment member, the second adjustment member, and the third adjustment member, the position adjustment of the photographing device in three mutually perpendicular directions can be achieved, so that the attitude of the photographing device can be adjusted omnidirectionally, in order to take high-quality photos and provide a basis for improving the quality of appearance detection.

[0021] In some embodiments, the first photographing assembly includes a second adjustment member and a third adjustment member, and the second photographing assembly includes a first adjustment member and a second adjustment member.

[0022] Such a setting enables the photographing device in the first photographing assembly to achieve position adjustment in the second direction and the third direction, and the photographing device in the second photographing assembly to achieve adjustment in the first direction and the second direction.

[0023] In some embodiments, the number of the first adjustment assemblies is the same as the number of the photographing devices, so as to independently adjust the position of each photographing device through the first adjustment assemblies.

[0024] By configuring a dedicated first adjustment component for each photographing device, independent adjustment of the position of each photographing device can be achieved, such that the position adjustment of each photographing device is not limited by the position arrangement of other photographing devices, which is conducive to improving the quality of photographing.

[0025] In some embodiments, the first adjustment member is provided with a first mounting hole for connecting to the bracket and a second mounting hole for connecting to the second adjustment member. The second adjustment member is provided with a third mounting hole for connecting to the first adjustment member and a fourth mounting hole for connecting to the photographing device. The third adjustment member is provided with a fifth mounting hole for connecting to the bracket and a sixth mounting hole for connecting to the second adjustment member. Among them, the second mounting hole is an oblong hole with a length direction extending along the first direction, the fourth mounting hole is an oblong hole with a length direction extending along the second direction, and the sixth mounting hole is an oblong hole with a length direction extending along the third direction.

[0026] The first adjustment member and the bracket are connected through the first mounting hole. The second adjustment member and the first adjustment member are connected through the second mounting hole and the third mounting hole. The third adjustment member and the bracket are connected through the fifth mounting hole. The third adjustment member and the second adjustment member are connected through the sixth mounting hole.

[0027] In some embodiments, the first adjustment member is provided with a seventh mounting hole for connecting to the second adjustment 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 adjustment member is provided with an eighth mounting hole for connecting to the second adjustment member. The eighth mounting hole is a circular hole, and the sixth mounting hole is arc-shaped.

[0028] By providing the seventh mounting hole, the first adjustment member and the second adjustment member can be connected through the second mounting hole and the seventh mounting hole respectively. Since the seventh mounting hole is a circular hole and the second mounting hole is arc-shaped, the first adjustment member can swing relative to the second adjustment member along the length direction of the second mounting hole with the connection position where the seventh mounting hole is located as the center, thereby adjusting the position of the photographing device in the first direction.

[0029] By providing the eighth mounting hole, the second adjustment member and the third adjustment member can be connected through the sixth mounting hole and the eighth mounting hole respectively. Since the eighth mounting hole is a circular hole and the sixth mounting hole is arc-shaped, the third adjustment member can swing relative to the second adjustment member along the length direction of the sixth mounting hole with the connection position where the eighth mounting hole is located as the center, thereby adjusting the position of the photographing device in the third direction.

[0030] In some embodiments, a scale is provided at at least one of the second mounting hole, the fourth mounting hole, and the sixth mounting hole. By providing the scale, the magnitude of the position adjustment can be controlled more accurately, which is conducive to achieving a more precise adjustment.

[0031] In some embodiments, the battery appearance detection device further includes a first light source and a second light source mounted on a bracket. The first light source is in a long strip shape, and the second light source is in a circular ring shape.

[0032] By providing the long-strip-shaped first light source and the circular-ring-shaped second light source, bar-shaped light and circular-ring-shaped light can be respectively provided for the first imaging component and the second imaging component, improving the brightness of the side of the detected part, increasing the contrast between the defective part and the non-defective part, and facilitating the improvement of the imaging quality.

[0033] In some embodiments, the number of the first light sources is two, and the two first light sources are arranged oppositely. The first detected part is in a cuboid shape, and the first light source is substantially parallel to one of the diagonals of the first detected part.

[0034] By providing two first light sources, arranging the two first light sources oppositely, and being substantially parallel to one of the diagonals of the first detected part, the imaging requirements can be basically met. Compared with the solution of providing four first light sources, the cost can be greatly saved.

[0035] In some embodiments, the battery appearance detection device further includes a second adjustment component 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. The fourth direction is parallel to the vertical direction, and the fifth direction and the sixth direction are perpendicular to each other and both perpendicular to the fourth direction.

[0036] By providing the second adjustment component, the position of the first light source can be adjusted in three mutually perpendicular directions, enabling the detection device to adjust the position of the first light source according to the requirements of the first imaging component and the second imaging component so as to achieve a better imaging effect.

[0037] In some embodiments, the second adjustment component 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 connection hole for connecting with the first mounting plate. The first mounting plate is provided with a second connection hole for connecting with the mounting base and a third connection hole for connecting with the second mounting plate. The second mounting plate is provided with a fourth connection hole for connecting with the first mounting plate and a fifth connection hole for connecting with the bracket. The first connection hole is an oblong hole with a length direction extending along the fifth direction. The second connection hole is an oblong hole with a length direction extending along the fourth direction. At least one of the third connection hole and the fourth connection hole is an oblong hole with a length direction extending along the sixth direction.

[0038] By setting the first connection hole as an oblong hole, the position of the first light source in the fifth direction can be adjusted. By setting the second connection 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 connection hole and the fourth connection hole as an oblong hole, the position of the first light source in the sixth direction can be adjusted.

[0039] In some embodiments, the first light source is disposed below the first imaging component.

[0040] By disposing the first light source below the first imaging component, interference between the first light source and the first imaging component can be avoided, and at the same time, it is also beneficial to use the first light source to illuminate the first and second objects to be detected below, so as to improve the imaging quality of the first and second imaging components.

[0041] In some embodiments, the battery appearance detection device further includes a third adjustment component configured to adjust the position of the second light source in the vertical direction.

[0042] By providing the third adjustment component, the position of the second light source in the vertical direction can be adjusted, facilitating the adjustment of the position of the second light source according to requirements.

[0043] In a second aspect, the present application provides a battery manufacturing device including the above-mentioned battery appearance detection device.

[0044] The above description is only an overview of the technical solution of the present application. In order to be able to understand the technical means of the present application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other objects, features, and advantages of the present application more obvious and understandable, the following specific embodiments of the present application are specifically described. Description of the Drawings

[0045] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained according to the drawings without creative efforts.

[0046] Figure 1 It is a schematic structural diagram of some embodiments of the battery appearance detection device disclosed in the present application.

[0047] Figure 2 It is a partial cross-sectional schematic diagram of some embodiments of the battery appearance detection device disclosed in the present application.

[0048] Figure 3 It is an exploded view of some embodiments of the battery appearance detection device disclosed in the present application.

[0049] Figure 4 It is a detection principle diagram of some embodiments of the battery appearance detection device disclosed in the present application.

[0050] Figure 5 It is a schematic structural diagram of the first adjustment member in some embodiments of the battery appearance detection device disclosed in the present application.

[0051] Figure 6 It is a schematic structural diagram of a second adjusting member in some embodiments of the battery appearance detection device disclosed in the present application.

[0052] Figure 7 It is a schematic structural diagram of a second adjusting member and a third adjusting member in some embodiments of the battery appearance detection device disclosed in the present application.

[0053] Figure 8 It is a schematic structural diagram of a second adjusting assembly in some embodiments of the battery appearance detection device disclosed in the present application.

[0054] Figure 9 It is a schematic diagram of the shooting angle in some embodiments of the battery appearance detection device disclosed in the present application.

[0055] Figure 10 and Figure 11 It is a schematic diagram of the depth of field length range of the shooting device in some embodiments of the battery appearance detection device disclosed in the present application.

[0056] In the drawings, the drawings are not drawn to actual scale.

[0057] Marking description: 1. Bracket; 11. Bracket main 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 adjusting assembly; 51. First adjusting member; 511. First mounting hole; 512. Second mounting hole; 513. Seventh mounting hole; 52. Second adjusting member; 521. Third mounting hole; 522. Fourth mounting hole; 523. Ninth mounting hole; 524. Tenth mounting hole; 525. Eleventh mounting hole; 53. Third adjusting member; 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 implementation manners

[0058] Next, embodiments of the technical solutions of the present application will be described in detail with reference to the drawings. The following embodiments are only used to illustrate the technical solutions of the present application more clearly, so they are only examples and cannot be used to limit the protection scope of the present application.

[0059] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs; the terms used herein are for the purpose of describing specific embodiments only 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 description of the drawings are intended to cover non-exclusive inclusion.

[0060] In the description of the embodiments of this application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order, or primary-secondary relationship of the indicated technical features. In addition, the term "vertical" is not strictly vertical but within the allowable error range. The term "parallel" is not strictly parallel but within the allowable error range.

[0061] Reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of this application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0062] In the description of the embodiments of this application, the term "and / or" is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after.

[0063] In the description of the embodiments of this application, the term "plurality" refers to more than two, unless otherwise specifically defined. Similarly, "multiple groups" refers to more than two groups, and "multiple pieces" refers to more than two pieces, unless otherwise specifically defined.

[0064] In the description of the embodiments of this application, the orientation or positional relationship indicated by technical terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of this application and simplifying the description, rather than indicating or implying that the indicated device or element 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 this application.

[0065] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "coupling", "fixation" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can also 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 components or the interaction relationship 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 according to specific circumstances.

[0066] Currently, from the perspective of the development of the market situation, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power, and solar power plants, but also widely used in electric transportation such as electric bicycles, electric motorcycles, and electric vehicles, as well as in multiple fields such as military equipment and aerospace. With the continuous expansion of the application fields of power batteries, the market demand is also continuously increasing.

[0067] A power battery includes battery cells, and each battery cell includes a housing, an electrode assembly, and a terminal post. The electrode assembly is disposed inside the housing. The terminal post is the output end of the battery. Its inner end is inserted into the housing and connected to the connecting piece on the electrode assembly, and its outer end extends out of the housing and is connected to a bus bar or other external electronic components.

[0068] During the production process of the terminal post, defects such as external plastic scalding, scratching, damage, metal exposure, or wire drawing at the edge may occur. These defects will greatly affect the quality of the terminal post and the safety of use. Therefore, it is necessary to detect the appearance quality of the terminal post on the production line.

[0069] With the continuous improvement of production capacity requirements, the beat requirements for detection equipment are also getting higher and higher. Therefore, how to accurately detect the battery cells with defective terminal posts and avoid abnormal assembly caused by downstream processes is a point that the current lithium battery automated detection industry attaches great importance to.

[0070] Currently, in the related art, the appearance detection of the terminal posts of battery cells mostly uses a single area array CCD for stop-shot detection, which has poor compatibility with different types of terminal posts, low detection accuracy for some types of terminal posts, and cannot meet the requirements of quality control.

[0071] Based on the above considerations, the present application provides a battery appearance detection device with improved structure. The detection device includes two groups of shooting components, which are respectively used to detect different types of detected parts, improving the compatibility of the detection device with different types of detected parts. Moreover, by using different shooting components to shoot different types of detected parts, the adaptability between the shooting components and the detected parts can be improved, and the structural arrangement of the shooting components can be adjusted according to the type of the detected part, which is conducive to improving the accuracy of shooting and further improving the accuracy of appearance quality detection.

[0072] The present application also provides a battery manufacturing device, which includes the above-mentioned battery appearance detection device.

[0073] Some embodiments of the battery appearance detection device provided by the present application will be introduced in detail below.

[0074] Refer to Figures 1 to 4 As shown, in some embodiments of the battery appearance detection device provided by the present application, the detection 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 is configured to take an appearance photo of the first detected part 10. The second shooting component 3 is installed on the bracket 1 and is configured to take an appearance photo of the second detected part 20. The first detected part 10 and the second detected part 20 have different shapes. The identification device 4 is in signal connection with the first shooting component 2 and the second shooting component 3, and is configured to identify the appearance defects of the first detected part 10 according to the photo taken by the first shooting component 2, and identify the appearance defects of the second detected part 20 according to the photo taken by the second shooting component 3.

[0075] By setting the first shooting component 2 and the second shooting component 3, the first detected part 10 and the second detected part 20 can be detected respectively, improving the compatibility of the detection device with different types of detected parts, expanding the applicable range of the detection device, reducing the time for switching models during production, and being conducive to improving the efficiency of appearance detection and production efficiency.

[0076] By using the first shooting component 2 and the second shooting component 3 to detect the first detected part 10 and the second detected part 20 respectively, dedicated shooting components can be equipped for the first detected part 10 and the second detected part 20 respectively, which is conducive to improving the adaptability between the shooting components and the detected parts and overcoming the problems of poor imaging effect and low detection accuracy caused by poor adaptability.

[0077] By setting up the recognition device 4, the appearance defects of the first detected part 10 and the second detected part 20 can be recognized based on the photos taken by the first shooting component 2 and the second shooting component 3, thereby providing a judgment basis for subsequent assembly or forming processes, and avoiding unqualified detected parts from mixing into the downstream and affecting the overall manufacturing quality of the battery.

[0078] The recognition device 4 can adopt a controller. Pictures of the detected parts without defects can be pre-stored in the controller. By comparing the photos taken by the first shooting component 2 and the second shooting component 3 with the pictures of the detected parts without defects, it can be determined whether there are defects in the appearance of the first detected part 10 and the second detected part 20. Alternatively, relevant parameters of the detected parts without defects can also be pre-stored in the controller. By comparing the corresponding parameters in the photos taken by the first shooting component 2 and the second shooting component 3 with the parameters of the detected parts without defects, it can also be determined whether there are defects in the appearance of the first detected part 10 and the second detected part 20.

[0079] In some embodiments, the first detected part 10 is in the shape of a cuboid, and the second detected part 20 is in the shape of a cylinder.

[0080] The cuboid shape and the cylinder shape are two relatively common shapes of the detected parts.

[0081] In other embodiments, the detected part can also be in the shape of a semi-cylinder, a triangular prism or other shapes. Parameters such as the number and installation positions of the first shooting component 2 and the second shooting component 3 can be adjusted according to the shape of the detected part to improve the imaging quality and the accuracy of appearance detection.

[0082] The first detected part 10 is in the shape of a cuboid, and defects such as wire drawing and burrs are likely to appear on its edges. The second detected part 20 is in the shape of a cylinder, and its surface is wrapped with plastic, and defects such as plastic scalding, scratching, breakage, deformation, and metal exposure are likely to appear.

[0083] As Figure 3 shown, in some embodiments, the first shooting component 2 includes a plurality of first connecting plates 21, the second shooting component 3 includes a plurality of 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 detection device includes a plurality of shooting devices, and the shooting devices are configured to be detachably installed on the first connecting plates 21 and can be detachably installed on the second connecting plates 31.

[0084] By configuring the photographing device to be detachably mountable to the first connection plate 21 and also to the second connection plate 31, the photographing device can be made to be both a component of the first photographing assembly 2 and a component of the second photographing assembly 3, achieving the purpose of sharing the photographing device between the first photographing assembly 2 and the second photographing assembly 3, which is beneficial for cost control.

[0085] Moreover, by simultaneously mounting the component of the first photographing assembly 2 (the first connection plate 21) and the component of the second photographing assembly 3 (the second connection 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, improving the compatibility of the detection device with different types of detected parts and expanding the applicable range of the detection device; when implementing the battery appearance detection device embodiment provided in this application on a production line, if both the first detected part 10 and the second detected part 20 exist on the production line, there is no need to frequently replace the detection device. By switching between the first photographing assembly 2 and the second photographing assembly 3, photographing and detection of different detected parts can be achieved, greatly shortening the changeover time and improving the detection efficiency.

[0086] In addition, the first connection plate 21 and the second connection plate 31 are simultaneously mounted on the bracket 1, which can set different and fixed working positions for the first photographing assembly 2 and the second photographing assembly 3. When switching between the first photographing assembly 2 and the second photographing assembly 3, the assembly of the first photographing assembly 2 and the second photographing assembly 3 can be completed by mounting the photographing device on the first connection plate 21 or the second connection plate 31.

[0087] If cost is not considered, in other embodiments, the first photographing assembly 2 and the second photographing assembly 3 may not share the photographing device, and corresponding photographing devices may be respectively mounted on multiple first connection plates 21 and multiple second connection plates 31 so that the first photographing assembly 2 and the second photographing assembly 3 can enter the working state at any time, which can further shorten the changeover time and further improve the detection efficiency.

[0088] One or more photographing devices can be mounted on each first connection plate 21. One or more photographing devices can also be mounted on each second connection plate 31.

[0089] The photographing device can be a CCD camera or other types of cameras.

[0090] Such as Figure 1 and Figure 2As shown, in some embodiments, the first imaging component 2 includes four imaging devices, and the four imaging devices are evenly divided into two groups, with the two groups of imaging devices arranged opposite to each other. This arrangement facilitates the imaging of the four side surfaces of the cuboid-shaped first detected object 10, facilitates the application of the optical imaging positive reflection principle for imaging, and at the same time does not interfere with the arrangement of the imaging devices of the second imaging component 3.

[0091] In other embodiments, the number of imaging devices in the first imaging component 2 can also be two, three, five or more.

[0092] In some embodiments, the central axes of the four imaging devices are respectively collinear with the centers of the side surfaces of the first detected object 10 they image. This arrangement is beneficial to improving the imaging quality of each side surface.

[0093] As Figure 9 shown, in some embodiments, the included angle between the central axis of the imaging device and the perpendicular line perpendicular to the side surface of the first detected object 10 imaged by the imaging device is less than 90°. This arrangement is beneficial to making the overall imaging quality of the corresponding side surface relatively high, especially the imaging quality of the edge of the first detected object 10 is better, so as to observe whether there are defects such as wire drawing and burrs at the edge of the first detected object 10.

[0094] As Figure 10 and Figure 11 shown, in some embodiments, the depth of field D of the imaging device is greater than or equal to the larger value of d1*sinα and d2*sinβ, where d1 is the length of the first cross-section of the first detected object 10 perpendicular to the vertical direction, d2 is the width of the first cross-section, γ = arctan(d1 / 2d2), and σ = arctan(d2 / 2d1). This arrangement can effectively ensure that the imaging range of the imaging device includes the entire range of the first side surface and the second side surface, and solves the problem of unclear imaging caused by a small imaging area and inability to judge whether there are defects.

[0095] In some embodiments, the second imaging component 3 includes four imaging devices evenly spaced along the circumferential direction. This arrangement facilitates the imaging of the cylindrical-shaped second detected object 20, and at the same time does not interfere with the arrangement of the imaging devices of the first imaging component 2.

[0096] In other embodiments, the number of imaging devices in the second imaging component 3 can also be two, three, five or more.

[0097] As Figures 5 to 7As shown, in some embodiments, the battery appearance detection device further includes a first adjustment assembly 5. The first adjustment assembly 5 includes a first adjuster 51, a second adjuster 52, and a third adjuster 53. The first imaging assembly 2 and / or the second imaging assembly 3 includes an imaging device. The first adjuster 51 is configured to adjust the position of the imaging device in a first direction. The second adjuster 52 is configured to adjust the position of the imaging device in a second direction. The third adjuster 53 is configured to adjust the position of the imaging device in a third direction. The first direction is parallel to the vertical direction. The second direction is the direction of approaching or moving away from the first detected part 10 or the second detected part 20, and the second direction is perpendicular to the first direction. The third direction is perpendicular to both the first direction and the second direction.

[0098] By providing the first adjuster 51, the second adjuster 52, and the third adjuster 53, the position adjustment of the imaging device in three mutually perpendicular directions can be achieved, so that the posture of the imaging device can be adjusted omnidirectionally, in order to take high-quality photos, providing a basis for improving the quality of appearance detection.

[0099] In some embodiments, both the first imaging assembly 2 and the second imaging assembly 3 include the first adjuster 51, the second adjuster 52, and the third adjuster 53, so that the imaging devices in the first imaging assembly 2 and the second imaging assembly 3 can both achieve position adjustment in three mutually perpendicular directions.

[0100] In some other embodiments, the first imaging assembly 2 includes the second adjuster 52 and the third adjuster 53, and the second imaging assembly 3 includes the first adjuster 51 and the second adjuster 52.

[0101] Such an arrangement enables the imaging device in the first imaging assembly 2 to achieve position adjustment in the second direction and the third direction, and the imaging device in the second imaging assembly 3 to achieve adjustment in the first direction and the second direction.

[0102] When the thickness of the first detected part 10 is small, after setting the imaging device at a preset height, even if the height of the first detected part 10 changes slightly, all images in the height direction can be taken. Therefore, the position adjustment of the first imaging assembly 2 for photographing the first detected part 10 in the first direction can be omitted, thereby simplifying the structure of the first adjustment assembly 5 for adjusting the imaging device in the first imaging assembly 2, facilitating the simplification of the assembly process, shortening the time for switching dies, and improving the detection efficiency.

[0103] Since the second detected part 20 is in the shape of a cylinder, it is not very necessary to adjust the position of the photographing device in the third shooting assembly 3 in the third direction. By setting the photographing device in the second shooting assembly 3 to be position-adjustable in the first direction and the second direction, the structure of the first adjusting assembly 5 for adjusting the photographing device in the second shooting assembly 3 can be simplified, which is also beneficial to simplifying the assembly process, shortening the time for cutting and changing the mold, and improving the detection efficiency.

[0104] In some embodiments of the present application, by providing a first adjusting assembly 5 including a first adjusting member 51, a second adjusting member 52, and a third adjusting member 53, the first adjusting assembly 5 can achieve position adjustment in three mutually perpendicular directions, 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 select to configure one or more of the first adjusting member 51, the second adjusting member 52, and the third adjusting member 53 according to the characteristics of the shooting object, thereby simplifying the structure and installation.

[0105] In some embodiments, the number of the first adjusting assemblies 5 is the same as the number of the photographing devices, so as to independently adjust the positions of each photographing device through the first adjusting assemblies 5.

[0106] By providing a dedicated first adjusting assembly 5 for each photographing device, independent adjustment of the position of each photographing device can be achieved, so that the position adjustment of each photographing device is not limited by the position arrangement of other photographing devices, which is beneficial to improving the quality of shooting.

[0107] In some embodiments, 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 with its length direction extending along the first direction, the fourth mounting hole 522 is an oblong hole with its length direction extending along the second direction, and the sixth mounting hole 532 is an oblong hole with its length direction extending along the third direction.

[0108] 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. The third adjusting member 53 is connected to the second adjusting member 52 through the sixth mounting hole 532.

[0109] In some embodiments, the first adjusting assembly 5 further includes a first connecting member connecting the first adjusting member 51 and the bracket 1, a second connecting member connecting the second adjusting member 52 and the first adjusting member 51, a third connecting member connecting the third adjusting member 53 and the bracket 1, a fourth connecting member connecting the third adjusting member 53 and the second adjusting member 52, and a fifth connecting member connecting the second adjusting member 52 and the photographing device.

[0110] The bracket 1 may be 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. The second connecting member passes through the second mounting hole 512 and the third mounting hole 521 to connect the second adjusting member 52 and the first adjusting member 51. 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. The second adjusting member 52 is provided with a tenth mounting hole 524, and the fourth connecting member passes through the sixth mounting hole 532 and the tenth mounting hole 524 to connect the third adjusting member 53 and the second adjusting member 52. The photographing device is provided with a third hole, and the fifth connecting member passes through the third hole and the fourth mounting hole 522 to connect the second adjusting member 52 and the photographing device.

[0111] The first connecting member, the second connecting member, the third connecting member, the fourth connecting member, and the fifth connecting member may be bolts, screws, or pin shafts, etc.

[0112] 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.

[0113] 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. Since the seventh mounting hole 513 is a circular hole and the second mounting hole 512 is arc-shaped, the first adjusting member 51 can swing relative to the second adjusting member 52 along the length direction of the second mounting hole 512 with the connection position where the seventh mounting hole 513 is located as the center, thereby adjusting the position of the photographing device in the first direction.

[0114] By providing the eighth mounting hole 533, the second adjusting member 52 and the third adjusting member 53 can be connected respectively through the sixth mounting hole 532 and the eighth mounting hole 533. The eighth mounting hole 533 is a circular hole, and the sixth mounting hole 532 is arc-shaped. The third adjusting member 53 can swing relative to the second adjusting member 52 along the length direction of the sixth mounting hole 532 with the connection position where the eighth mounting hole 533 is located as the center, thereby adjusting the position of the photographing device in the third direction.

[0115] In some embodiments, the first adjusting assembly 5 further includes a sixth connecting member connecting the first adjusting member 51 and the second adjusting member 52 and a seventh connecting member connecting the third adjusting member 53 and the second adjusting member 52.

[0116] 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.

[0117] In some embodiments, the fourth mounting hole 522 is elongated.

[0118] 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 controlled more accurately, which is beneficial to achieving more precise adjustment.

[0119] In some embodiments, the battery appearance detection 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 a long strip shape, and the second light source 7 is in a circular ring shape.

[0120] By providing the long-strip-shaped first light source 6 and the circular-ring-shaped second light source 7, a strip of light and a ring of light can be provided for the first photographing assembly 2 and the second photographing assembly 3 respectively, improving the brightness of the side of the detected part and increasing the contrast between the defective part and the non-defective part, which is beneficial to improving the imaging quality.

[0121] In some embodiments, the number of the first light sources 6 is two. The two first light sources 6 are arranged oppositely. The first detected part 10 is in a cuboid shape, and the first light source 6 is substantially parallel to one of the diagonals of the first detected part 10.

[0122] By providing two first light sources 6, arranging the two first light sources 6 oppositely, and being substantially parallel to one of the diagonals of the first detected part 10, the imaging requirements can be basically met. Compared with the solution of providing four first light sources, the cost can be greatly saved.

[0123] In some embodiments, the battery appearance detection device further includes a second adjustment assembly 8, and the second adjustment assembly 8 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. The fourth direction is parallel to the vertical direction, and the fifth direction and the sixth direction are perpendicular to each other and both perpendicular to the fourth direction.

[0124] By providing the second adjustment assembly 8, the position of the first light source 6 can be adjusted in three mutually perpendicular directions, enabling the detection device to adjust the position of the first light source 6 according to the requirements of the first photographing assembly 2 and the second photographing assembly 3, so as to achieve a better imaging effect.

[0125] As Figure 8 shown, in some embodiments, the second adjustment assembly 8 includes a mounting base 81, a first mounting plate 82, and a second mounting plate 83. The first light source 6 is mounted on the mounting base 81. The mounting base 81 is provided with a first connection hole 811 for connecting with the first mounting plate 82. The first mounting plate 82 is provided with a second connection hole 821 for connecting with the mounting base 81 and a third connection hole 822 for connecting with the second mounting plate 83. The second mounting plate 83 is provided with a fourth connection hole 831 for connecting with the first mounting plate 82 and a fifth connection hole 832 for connecting with the bracket 1. The first connection hole 811 is an oblong hole with its length direction extending along the fifth direction. The second connection hole 821 is an oblong hole with its length direction extending along the fourth direction. At least one of the third connection hole 822 and the fourth connection hole 831 is an oblong hole with its length direction extending along the sixth direction.

[0126] By setting the first connection 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 connection 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 connection hole 822 and the fourth connection hole 831 as an oblong hole, the position of the first light source 6 in the sixth direction can be adjusted.

[0127] In some embodiments, the first light source 6 is disposed below the first photographing assembly 2.

[0128] By disposing the first light source 6 below the first photographing assembly 2, interference between the first light source 6 and the first photographing assembly 2 can be avoided. At the same time, it is also beneficial to use the first light source 6 to illuminate the first detected part 10 and the second detected part 20 below, so as to improve the imaging quality of the first photographing assembly 2 and the second photographing assembly 3.

[0129] In some embodiments, the battery appearance detection device further includes a third adjustment assembly 9, and the third adjustment assembly 9 is configured to adjust the position of the second light source 7 in the vertical direction.

[0130] By providing the third adjustment assembly 9, the position of the second light source 7 in the vertical direction can be adjusted, facilitating the adjustment of the position of the second light source 7 according to requirements.

[0131] As Figure 3 shown, in some embodiments, the third adjustment assembly 9 includes a third mounting plate 91 and a fourth mounting plate 92. The third mounting plate 91 is mounted on the outer side surface of the second light source 7. The fourth mounting plate 92 is provided with a fifth connection hole, which is an oblong hole. The length direction of the fifth connection hole extends in the vertical direction. The fourth mounting plate 92 is connected to the third mounting plate 91 through the fifth connection hole, and the fourth mounting plate 92 is mounted on the bracket 1.

[0132] The third adjustment assembly 9 may further include an eighth connecting member and a ninth connecting member. The third mounting plate 91 is provided with a sixth connection hole and a seventh connection hole. The second light source 7 is provided with an eighth connection hole. The eighth connecting member passes through the sixth connection hole and the eighth connection hole to connect the third mounting plate 91 and the second light source 7. The ninth connecting member passes through the fifth connection hole and the seventh connection hole to connect the fourth mounting plate 92 and the third mounting plate 91.

[0133] The eighth connecting member and the ninth connecting member may be bolts, screws, pins, etc.

[0134] In the embodiment of the battery appearance detection device provided by the present invention, the first detected part 10 and the second detected part 20 may be components of the battery, such as pole posts or explosion-proof valves, etc., or may be the battery itself. Of course, the detected part is not limited to the battery, and may also be other products or components that need to be subjected to appearance detection.

[0135] Next, with reference to the attached Figures 1 to 11 , the structure of an embodiment of the battery appearance detection device provided by the present application will be introduced.

[0136] As Figure 1 and Figure 2 shown, the battery appearance detection device includes a bracket 1 and four first shooting assemblies 2 and four second shooting assemblies 3 mounted on the bracket 1.

[0137] Among them, the four first shooting assemblies 2 are divided into two groups, with two shooting devices in each group. The two groups of first shooting assemblies 2 are arranged oppositely. The four second shooting assemblies 3 are evenly spaced along the circumferential direction. One group of first shooting assemblies 2 is located between two second shooting assemblies 3, and the other group of first shooting assemblies 2 is located between the other two second shooting assemblies 3.

[0138] As Figure 3 shown, the battery appearance detection device further includes a first adjustment assembly 5, a first light source 6, a second light source 7, a second adjustment assembly 8, and a third adjustment assembly 9.

[0139] The bracket 1 is generally in the shape of an octagonal prism. The bracket 1 includes a bracket main body 11 and a cover plate 12 installed above the bracket main body 11. The bracket main body 11 has a certain height, and an accommodation space is provided inside the bracket main body 11. The first photographing assembly 2, the second photographing assembly 3, the first adjusting assembly 5, the first light source 6, the second light source 7, the second adjusting assembly 8, and the third adjusting assembly 9 are all arranged below the cover plate 12 and located in the accommodation space of the bracket main body 11 to prevent external light sources from interfering through the bracket main body 11.

[0140] The first photographing assembly 2 includes two first connecting plates 21, and the two first connecting plates 21 are relatively installed on the bracket 1. Two photographing devices are installed on each first connecting plate 21. The second photographing assembly 3 includes four second connecting plates 31, and the four second connecting plates 31 are installed on the bracket 1 at equal intervals in the circumferential direction. One photographing device is installed on each second connecting plate 31.

[0141] The first adjusting assembly 5 is used to adjust the installation position and angle of the photographing device. Each photographing device is equipped with a set of first adjusting assembly 5, but the structure of the first adjusting assembly 5 corresponding to the photographing devices in the first photographing assembly 2 is different from the structure of the first adjusting assembly 5 corresponding to the photographing devices in the second photographing assembly 3.

[0142] Two strip-shaped first light sources 6 are arranged oppositely and are respectively installed on the bracket 1 through the corresponding second adjusting assemblies 8. The annular second light source 7 is arranged at the center of the bracket 1 and is installed on the bracket 1 through the third adjusting assembly 9.

[0143] The third adjusting 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 connection hole and a seventh connection hole, and the second light source 7 is provided with an eighth connection hole. The eighth connecting member passes through the sixth connection hole and the eighth connection hole to connect the third mounting plate 91 to the outer side surface of the second light source 7. The fourth mounting plate 92 is provided with a fifth connection hole, and the fifth connection hole is an oblong hole, and the length direction of the fifth connection hole extends in the vertical direction. The ninth connecting member passes through the fifth connection hole and the seventh connection hole to connect the fourth mounting plate 92 and the third mounting plate 91. The fourth mounting plate 92 is also provided with a tenth connection hole, and the tenth connecting member passes through the tenth connection hole and the mounting hole on the bracket 1 to mount the fourth mounting plate 92 on the bracket 1.

[0144] As Figure 4 shown, the recognition device 4 is signal-connected to the first photographing assembly 2 and the second photographing assembly 3 to receive the photos taken by the first photographing assembly 2 and the second photographing assembly 3, and identify the defects of the first detected part 10 and the second detected part 20 according to the photos.

[0145] As Figure 5 、 Figure 6and Figure 7 As shown, the first adjustment component 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.

[0146] 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 installed on one side of the second adjusting member 52, the opening of the second adjusting member 52 faces downward, the third adjusting member 53 is installed on the top of the second adjusting member 52, and the shooting device is installed inside the U-shaped structure.

[0147] Although the complete structure of the first adjustment component 5 includes three adjustment components, namely the first adjustment component 51, the second adjustment component 52 and the third adjustment component 53, when assembling the shooting device in the first shooting component 2, only the second adjustment component 52 and the third adjustment component 53 can be installed, and there is no need to install the first adjustment component 51; when assembling the shooting device in the second shooting component 3, only the first adjustment component 51 and the second adjustment component 52 can be installed, and there is no need to install the third adjustment component 53, or even if the third adjustment component 53 is still installed on the second adjustment component 52, the third adjustment component 53 is not connected to the bracket 1, otherwise the position of the shooting device in the vertical direction cannot be adjusted.

[0148] like Figure 5 As shown, a first mounting hole 511 is provided at 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 which penetrate the left and right sides.

[0149] The first mounting hole 511 and the seventh mounting hole 513 are both circular holes. The second mounting hole 512 is an oblong hole whose length direction extends along a first direction and is arc-shaped. The first direction is parallel to the vertical direction.

[0150] like Figure 6 As shown, 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 .

[0151] The third mounting hole 521, the ninth mounting hole 523, the tenth mounting hole 524 and the eleventh mounting hole 525 are all round holes. The fourth mounting hole 522 is an oblong hole whose length direction extends along the second direction and is in a long strip shape. The second direction extends along the direction close to and away from the first detected component 10 and the second detected component 20. The second direction is perpendicular to the first direction.

[0152] like Figure 7As shown in the figure, the top of the third adjusting member 53 is provided with two vertically penetrating fifth mounting holes 531, a sixth mounting hole 532, and an eighth mounting hole 533.

[0153] Both the fifth mounting hole 531 and the eighth mounting hole 533 are circular holes. The sixth mounting hole 532 is an oblong hole whose length direction extends along the third direction and is arc-shaped. The third direction is perpendicular to both the first direction and the second direction.

[0154] The connection methods of the three adjusting members and the bracket 1 are introduced below.

[0155] 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.

[0156] 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.

[0157] 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.

[0158] 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.

[0159] 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.

[0160] As Figure 8 shown, the second adjusting assembly 8 includes a mounting base 81, a first mounting plate 82, and a second mounting plate 83. The first mounting plate 82 is L-shaped.

[0161] The first light source 6 is installed on the mounting base 81. The mounting base 81 is provided with a first connection hole 811, and the first connection hole 811 is an oblong hole whose length direction 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 direction extends along the vertical direction, and 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, and the fifth connection hole 832 is a circular hole.

[0162] The connecting member passes through the second connection hole 821 and the first connection hole 811 to connect the first mounting plate 82 and the mounting seat 81. The connecting member passes through the third connection hole 822 and the fourth connection hole 831 to connect the first mounting plate 82 and the second mounting plate 83. The connecting member passes through the fifth connection hole 832 and the hole on the bracket 1 to connect the second mounting plate 83 and the bracket 1.

[0163] As Figure 9 shown, the central axes of the four photographing devices for photographing the first detected object 10 are respectively collinear with the centers of the sides of the first detected object 10 they photograph. Moreover, the angles α and β between the central axis of the photographing device and the perpendicular line perpendicular to the side of the first detected object 10 photographed by the photographing device are both less than 90°.

[0164] As Figure 10 and Figure 11 shown, the condition that the depth of field D of the photographing device needs to satisfy is: D≥max(d1*sinγ, d2*sinσ).

[0165] Wherein, d1 is the length of the first cross-section of the first detected object 10 perpendicular to the vertical direction, d2 is the width of the first cross-section, γ = arctan(d1 / 2d2), and σ = arctan(d2 / 2d1).

[0166] Such a setting can achieve a better balance of the relationships among the position of the photographing device, the adjustment range of the first adjustment component, the length and width of the first detected object, and the model parameters of the photographing device, etc., and obtain a better imaging effect, improving the quality of appearance detection.

[0167] The above descriptions of the various embodiments tend to emphasize the differences between the various embodiments. Their similarities or similarities can be referred to each other. For the sake of brevity, they will not be elaborated herein.

[0168] Although the present application has been described with reference to the preferred embodiments, various improvements can be made to it and its components can be replaced with equivalents without departing from the scope of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery appearance detection device, comprising: a bracket (1); a first shooting component (2), mounted on the bracket (1), the first shooting component (2) being configured to take an appearance photo of a first detected part (10); a second shooting component (3), mounted on the bracket (1), the second shooting component (3) being configured to take an appearance photo of a second detected part (20), the first detected part (10) and the second detected part (20) having different shapes; and an identification device (4), signal - connected to the first shooting component (2) and the second shooting component (3), the identification device (4) being configured to identify the appearance defects of the first detected part (10) according to the photo taken by the first shooting component (2), and to identify the appearance defects of the second detected part (20) according to the photo taken by the second shooting component (3).

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

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

4. The battery appearance detection device according to claim 3, wherein, the first shooting component (2) includes four of the shooting devices, and the four shooting devices are divided into two groups, and the two groups of shooting devices are arranged oppositely.

5. The battery appearance detection device according to claim 4, wherein, the central axes of the four shooting devices are respectively collinear with the centers of the sides of the first detected part (10) they photograph.

6. The battery appearance detection device according to claim 5, wherein, the included angle between the central axis of the shooting device and the perpendicular line perpendicular to the side of the first detected part (10) photographed by the shooting device is less than 90°.

7. The battery appearance detection device according to claim 4, wherein, the depth of field D of the shooting device is greater than or equal to the larger value of d1*sinγ and d2*sinσ, where d1 is the length of the first cross - section of the first detected part (10) perpendicular to the vertical direction, d2 is the width of the first cross - section, γ = arctan(d1 / 2d2), and σ = arctan(d2 / 2d1).

8. The battery appearance detection device according to claim 3, wherein, the second shooting component (3) includes four of the shooting devices arranged evenly at intervals along the circumferential direction.

9. The battery appearance detection device according to claim 2, wherein, It further includes a first adjustment assembly (5), the first adjustment assembly (5) includes a first adjuster (51), a second adjuster (52) and a third adjuster (53), the first shooting assembly (2) and / or the second shooting assembly (3) includes a shooting device, the first adjuster (51) is configured to adjust the position of the shooting device in a first direction, the second adjuster (52) is configured to adjust the position of the shooting device in a second direction, the third adjuster (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 of approaching or departing from the first detected part (10) or the second detected part (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.

10. The battery appearance detection device according to claim 9, wherein, the first shooting assembly (2) includes the second adjuster (52) and the third adjuster (53), and the second shooting assembly (3) includes the first adjuster (51) and the second adjuster (52).

11. The battery appearance detection device according to claim 9, wherein, the number of the first adjustment assemblies (5) is the same as the number of the shooting devices, so as to independently adjust the positions of each shooting device through the first adjustment assemblies (5).

12. The battery appearance detection device according to claim 9, wherein, the first adjuster (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 adjuster (52), the second adjuster (52) is provided with a third mounting hole (521) for connecting with the first adjuster (51) and a fourth mounting hole (522) for connecting with the shooting device, the third adjuster (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 adjuster (52), wherein the second mounting hole (512) is an oblong hole with its length direction extending along the first direction, the fourth mounting hole (522) is an oblong hole with its length direction extending along the second direction, and the sixth mounting hole (532) is an oblong hole with its length direction extending along the third direction.

13. The battery appearance detection device according to claim 12, wherein, the first adjuster (51) is provided with a seventh mounting hole (513) for connecting with the second adjuster (52), the seventh mounting hole (513) is a round 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 adjuster (53) is provided with an eighth mounting hole (533) for connecting with the second adjuster (52), the eighth mounting hole (533) is a round hole, and the sixth mounting hole (532) is arc-shaped.

14. The battery appearance detection device according to claim 12, wherein, 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).

15. The battery appearance detection device according to any one of claims 1 to 14, wherein, it 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 a long strip shape, and the second light source (7) is in a circular ring shape.

16. The battery appearance detection device according to claim 15, wherein, the number of the first light sources (6) is two, the two first light sources (6) are arranged oppositely, the first detected part (10) is in a cuboid shape, and the first light source (6) is substantially parallel to one of the diagonals of the first detected part (10).

17. The battery appearance detection device according to claim 15, wherein, it further includes a second adjustment assembly (8), and the second adjustment assembly (8) 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, the fourth direction is parallel to the vertical direction, and the fifth direction and the sixth direction are perpendicular to each other and both perpendicular to the fourth direction.

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

19. The battery appearance detection device according to claim 15, wherein, the first light source (6) is arranged below the first photographing assembly (2).

20. The battery appearance detection device according to claim 15, wherein, it further includes a third adjustment assembly (9), and the third adjustment assembly (9) is configured to adjust the position of the second light source (7) in the vertical direction.

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

Images