Appearance detection mechanism

Abstract

The utility model discloses an appearance detection mechanism, and relates to the technical field of appearance detection. The appearance detection mechanism comprises a detection table, a plurality of side edge detection assemblies and a driving assembly, wherein the detection table is configured to support a to-be-detected piece; the multiple side edge detection assemblies are arranged on the detection table, each side edge detection assembly comprises a side edge detection piece, and each side edge detection piece moves in the length direction of one side edge of the to-be-detected piece and detects the side edge; and the driving assembly is configured to drive the plurality of side edge detection pieces to move synchronously. According to the appearance detection mechanism, the detection efficiency is improved, the space is saved, the moving synchronism of the visual detection piece is ensured, and the accuracy of a detection result is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of appearance detection, in particular to an appearance detection mechanism. Background Art

[0002] As a renewable, safe, and environmentally friendly new energy, solar energy is gaining more and more attention. However, if solar energy is used directly, it can only be used as a heat source. Photovoltaic modules can convert solar energy into electrical energy, which can be applied to various fields and is easy to transmit. Among them, the structure used by photovoltaic modules to convert light energy into solar energy is a solar cell.

[0003] Since most solar cells are made of polycrystalline silicon, they are hard and brittle. During the production and transportation of solar cells, the outer contour of the cells is easily damaged by collisions, which affects the photoelectric conversion efficiency. Therefore, it is necessary to detect the outer contour of the cells.

[0004] Currently, visual inspection parts are usually used to move along the edge of the battery cell for inspection. However, if only one visual inspection part is set to move around the battery cell, the inspection efficiency will be low, affecting the overall beat and production efficiency. If a visual inspection part is set for each side of the battery cell, multiple mechanisms are required to drive the movement of the side inspection parts, which not only takes up space, but also makes it difficult to ensure the synchronization of the movement of the visual inspection parts, affecting the accurate judgment of the inspection results. Utility Model Content

[0005] The utility model aims to provide an appearance detection mechanism, which improves detection efficiency, saves space, ensures the synchronization of movement of visual detection parts, and improves the accuracy of detection results.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] An appearance inspection mechanism, comprising:

[0008] A testing table, wherein the testing table is configured to support a piece to be tested;

[0009] A plurality of side detection components, wherein the plurality of side detection components are arranged on the detection platform, and the side detection components include side detection members, each of which moves along the length direction of a side of the part to be detected and detects the side;

[0010] A driving assembly is configured to drive the plurality of side edge detection members to move synchronously.

[0011] As an optional solution of the above-mentioned appearance detection mechanism, the driving assembly includes a synchronous belt and a synchronous driving member, the synchronous belt is arranged around the part to be detected, a plurality of the side detection members are fixedly connected to the synchronous belt, and the synchronous driving member is configured to drive the synchronous belt to rotate.

[0012] As an optional solution of the above appearance detection mechanism, the synchronous belt has multiple fixed sections corresponding to multiple side edges of the part to be detected, and each of the fixed sections is fixedly connected to at least one of the side detection parts.

[0013] As an optional solution of the above-mentioned appearance detection mechanism, the side detection component also includes a slide rail, and the side detection member is slidably arranged on the corresponding slide rail.

[0014] As an optional solution of the above appearance detection mechanism, the slide rail is parallel to the corresponding fixed section.

[0015] As an optional solution for the above-mentioned appearance detection mechanism, the driving assembly also includes a plurality of steering wheels and at least one adjusting wheel. The plurality of steering wheels are arranged on the detection platform to jointly tension the synchronous belt. The fixed section is formed by the synchronous belt between two adjacent steering wheels. The adjusting wheel is movably arranged on the detection platform and abuts against one of the fixed sections. The moving direction of the adjusting wheel is arranged at an angle to the fixed section.

[0016] As an optional solution of the above appearance detection mechanism, the adjusting wheel is located on the outside of the synchronous belt.

[0017] As an optional solution of the above appearance detection mechanism, the appearance detection mechanism further includes a plurality of corner detection components, the corner detection components include corner detection pieces, each of the corner detection pieces is arranged corresponding to a corner of the piece to be detected and detects the corner.

[0018] As an optional solution of the above-mentioned appearance detection mechanism, the corner detection assembly also includes a mounting frame, the mounting frame has at least two mounting positions, and the corner detection member can be set at any of the mounting positions of the mounting frame.

[0019] As an optional solution of the above-mentioned appearance inspection mechanism, the inspection platform includes a table top and a lifting platform, the lifting platform is movably arranged on the table top along a vertical direction, and the lifting platform is configured to support the part to be inspected.

[0020] Beneficial effects of the utility model:

[0021] The utility model provides an appearance detection mechanism. In the appearance detection mechanism, multiple side detection components correspond to one side of a battery sheet respectively, and the multiple side detection components are driven to move synchronously by a driving component, so that each side detection component only needs to move a distance greater than the length of the corresponding side, thereby improving the detection efficiency, and multiple side detection components move synchronously, and only one mechanism for driving the side detection components needs to be set, which saves space, ensures the synchronization of the movement of the visual detection components, and improves the accuracy of the detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the appearance detection mechanism provided by the utility model;

[0023] Figure 2 It is a structural schematic diagram of the detection platform and the driving assembly provided by the utility model;

[0024] Figure 3 It is a structural schematic diagram of the side detection component provided by the utility model;

[0025] Figure 4 It is a structural schematic diagram of the corner detection component provided by the utility model.

[0026] In the figure:

[0027] 20. Appearance inspection organization; 100. Battery pack;

[0028] 21. Inspection table; 22. Side inspection component; 23. Driving component; 24. Corner inspection component;

[0029] 211, table; 212, lifting platform; 221, side detection part; 222, slide rail; 223, slider; 231, synchronous belt; 232, steering wheel; 233, adjusting wheel; 241, corner detection part; 242, mounting frame;

[0030] 2211. coaxial light source; 2212. strip light source; 2213. camera; 2214. depth of field lens; 2311. fixed segment. DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0032] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0033] Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0034] Unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in contact with the second feature through another feature between them instead of being in direct contact. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0035] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0036] As a renewable, safe, and environmentally friendly new energy, solar energy is gaining more and more attention. However, if solar energy is used directly, it can only be used as a heat source. Photovoltaic modules can convert solar energy into electrical energy, which can be applied to various fields and is easy to transmit. Among them, the structure used by photovoltaic modules to convert light energy into solar energy is a solar cell.

[0037] Since most solar cells are made of polycrystalline silicon, they are hard and brittle. During the production and transportation of solar cells, the outer contour of the cells is easily damaged by collisions, which affects the photoelectric conversion efficiency. Therefore, it is necessary to detect the outer contour of the cells.

[0038] Currently, visual inspection parts are usually used to move along the edge of the battery cell for inspection. However, if only one visual inspection part is set to move around the battery cell, the inspection efficiency will be low, affecting the overall beat and production efficiency. If a visual inspection part is set for each side of the battery cell, multiple mechanisms are required to drive the movement of the side inspection parts, which not only takes up space, but also makes it difficult to ensure the synchronization of the movement of the visual inspection parts, affecting the accurate judgment of the inspection results.

[0039] To solve the above problems, this embodiment provides an appearance detection mechanism, such as Figure 1 As shown, the appearance inspection mechanism 20 includes an inspection table 21 and multiple side inspection components 22. The inspection table 21 is configured to support the part to be inspected. The multiple side inspection components 22 are arranged on the inspection table 21. The side inspection components 22 include side inspection components 221. Each side inspection component 221 moves along the length direction of a side of the part to be inspected and inspects the side.

[0040] Multiple side detection components 22 correspond to one side of the battery cell respectively. As the side detection component 221 moves along one side of the component to be detected, the appearance of the side can be detected, and the probability of missed detection can be effectively reduced, thereby improving the accuracy of the detection result. Moreover, when multiple side detection components 22 are used to perform appearance detection on the side of the battery cell, the moving distance of each side detection component 22 only needs to be greater than the length of the corresponding side, thereby reducing the total detection time and improving the detection efficiency.

[0041] In this embodiment, the part to be detected is described by taking a battery cell group 100 as an example, and the battery cell group 100 includes a plurality of battery cells stacked. Among them, the battery cell is rectangular, so a total of four side detection components 22 need to be set. It is worth noting that the battery cell can also be other shapes, such as hexagons, octagons, etc., in which case the number of side detection components 22 is also increased accordingly. In some embodiments, two or more side detection components 22 can also be set corresponding to one side to compare and verify the detection results, so as to further improve the accuracy of the detection results.

[0042] like Figure 1-2 As shown, in order to achieve synchronization of multiple side detection members 221, the appearance detection mechanism 20 further includes a driving assembly 23, which is configured to drive multiple side detection members 221 to move synchronously. By driving multiple side detection members 221 to move synchronously through the driving assembly 23, only one mechanism for driving the side detection member 221 is required, which saves space, ensures synchronization of movement of the visual detection member, and improves the accuracy of the detection result.

[0043] Specifically, the driving assembly 23 includes a synchronous belt 231 and a synchronous driving member (not shown in the figure), the synchronous belt 231 is arranged around the battery cell group 100, and multiple side detection members 221 are fixedly connected to the synchronous belt 231, and the synchronous driving member is configured to drive the synchronous belt 231 to rotate. In this embodiment, only one synchronous driving member is required, and the synchronous driving member drives the synchronous belt 231 to rotate, which can drive the multiple side detection members 221 connected to the synchronous belt 231 to move, thereby achieving synchronization of the movement of the multiple side detection members 221.

[0044] In other embodiments, the drive assembly 23 may also include multiple screw rods, which are connected in sequence through bevel gears, and each screw rod is threadedly connected to the corresponding side detection member 221. The synchronous drive member directly drives one of the screw rods to rotate, so that all the screw rods can rotate synchronously, thereby realizing the synchronous movement of multiple side detection members 221.

[0045] In this embodiment, the synchronous driving member is a motor, and the speed and distance of movement of the side driving member can be controlled by controlling the rotation speed and number of revolutions of the rotor of the motor.

[0046] In this embodiment, the synchronous belt 231 has multiple fixed sections 2311 corresponding to multiple sides of the battery cell group 100, and each fixed section 2311 is fixedly connected to at least one side detection member 221. The fixed section 2311 of the synchronous belt 231 is a straight section, which can make the side detection member 221 move along a straight line, so that the distance between the side detection member 221 and the side of the battery cell group 100 changes evenly, which can improve the detection accuracy.

[0047] It is understandable that the synchronous belt 231 is flexible, and when the side detection member 221 moves with the synchronous belt 231, it is easy to move in a direction perpendicular to the fixed section 2311, which affects the detection accuracy. Figure 2 and Figure 3 As shown, to solve the above problem, the side detection assembly 22 further includes a slide rail 222, and the side detection member 221 is slidably disposed on the corresponding slide rail 222. The slide rail 222 guides the side detection member 221 to improve the movement accuracy of the side detection member 221.

[0048] like Figure 2 and Figure 3As shown, the side detection assembly 22 also includes a slider 223, which is slidably connected to the slide rail 222, and the side detection member 221 is arranged on the slider 223. In order to make the appearance detection mechanism 20 suitable for battery cell groups 100 of different sizes, the side detection member 221 is movably connected to the slider 223, and the side detection member 221 is arranged at an angle relative to the moving direction of the slider 223 and the moving direction of the slider 223 relative to the slide rail 222. When the distance between the side of the battery cell group 100 and the side detection member 221 is too far or too close, the operator can adjust the distance between the side detection member 221 and the battery cell group 100 to ensure that the side detection member 221 is at the best detection distance.

[0049] In this embodiment, the slide rail 222 is parallel to the corresponding fixed section 2311 to prevent the side detection member 221 from pulling the synchronous belt 231 and causing damage to the synchronous belt 231 , and also to reduce the resistance between the side detection member 221 and the slide rail 222 .

[0050] In this embodiment, the side inspection member 221 includes a visual inspection member. During the movement of the visual inspection member, the side of the battery cell group 100 is photographed by the visual inspection member to detect whether the appearance of the side of the battery cell group 100 is damaged.

[0051] It is worth noting that the slide rail 222 and the corresponding fixed section 2311 are parallel to the side of the corresponding battery cell group 100, that is, during the movement of the side detection member 221, the distance between the side detection member 221 and the side of the battery cell group 100 always remains unchanged, which can effectively avoid the visual detection member from frequently focusing due to the change in the distance between the side of the battery cell group 100 to ensure the clarity of the photo, reduce the difficulty of detection, and improve the detection efficiency and accuracy.

[0052] like Figure 2 As shown, the driving assembly 23 also includes a plurality of steering wheels 232 and at least one adjusting wheel 233. The plurality of steering wheels 232 are disposed on the detection platform 21 to tension the synchronous belt 231 together. The fixed section 2311 is formed by the synchronous belt 231 between two adjacent steering wheels 232. The adjusting wheel 233 is movably disposed on the detection platform 21 and abuts against one of the fixed sections 2311. The moving direction of the adjusting wheel 233 is disposed at an angle to the fixed section 2311.

[0053] The multiple steering wheels 232 can tighten the synchronous belt 231, so that the synchronous belt 231 between two adjacent steering wheels 232 is a straight section. It is worth noting that the fixed section 2311 of the synchronous belt 231 refers to the part between the two steering wheels 232, rather than a certain synchronous section. As the use time of the appearance inspection mechanism 20 increases, the synchronous belt 231 will loosen, affecting the transmission efficiency. At this time, the synchronous belt 231 can be re-tightened by moving the adjusting wheel 233 so that the adjusting wheel 233 is close to and pressed against the synchronous belt 231, and there is no need to frequently replace the synchronous belt 231, thereby reducing costs.

[0054] In this embodiment, the adjusting wheel 233 is located on the outside of the synchronous belt 231, that is, on the other side of the steering wheel 232. The adjusting wheel 233 moves toward the inside of the synchronous belt 231 to tighten the synchronous belt 231, so that the angle of the synchronous belt 231 at the steering wheel 232 adjacent to the adjusting wheel 233 is reduced, thereby increasing the tightening force. In order to prevent the adjusting wheel 233 from abutting against the fixed section 2311 and causing the direction of the fixed section 2311 to change, the position abutted by the adjusting wheel 233 is the part outside the fixed section 2311 of the synchronous belt 231.

[0055] like Figure 3 As shown, in order to improve the brightness at the side of the battery cell group 100, the side detection component 22 also includes a detection light source, and the detection light source includes a coaxial light source 2211 to provide supplementary light in the direction of the detection path of the visual detection component, and the brightness of the light source is more uniform, thereby improving the lighting effect. It is worth noting that the structure and usage of the coaxial light source 2211 belong to the prior art and will not be repeated here.

[0056] In this embodiment, the detection light source includes a strip light source 2212, the coaxial light source 2211 has an opening, and the strip light source is arranged around the opening. The strip light source 2212 can be arranged along the side length of the opening, and the illumination range is large, which can achieve fill light, thereby exposing the slight damage on the side of the battery cell group 100, and improving the detection accuracy of the side detection member 221.

[0057] In this embodiment, the visual inspection component includes a camera 2213 and a depth of field lens 2214. The camera 2213 is used to collect visual signals from the side of the battery cell group 100, while the depth of field lens 2214 can blur the background to make the side of the battery cell group 100 more prominent in the picture of the camera 2213, thereby facilitating the analysis and comparison of the appearance of the side of the battery cell group 100 and improving the inspection accuracy of the appearance of the side of the battery cell.

[0058] It is understandable that, in addition to the sides, the appearance inspection of the battery cell also needs to inspect the corners to ensure the reliability of the inspection results. Figure 1 and Figure 4As shown, to achieve the above purpose, the appearance detection mechanism 20 also includes a plurality of corner detection components 24, and the corner detection components 24 include corner detection members 241, each corner detection member 241 is arranged corresponding to a corner of the battery cell group 100 and detects the corner.

[0059] In this embodiment, a total of four corner detection components 24 need to be set to correspond to the four corners of the rectangular battery cell. In order to improve the detection accuracy, the corner detection component 24 is set on the bisector of the corresponding corner, that is, the detection path of the corner detection component 24 is directly opposite to the corner of the battery cell. It is worth noting that the corner detection component 24 includes a visual detection component, which includes a camera 2213, a depth of field lens 2214 and a coaxial light source 2211. Since the corner detection component 24 detects damage to the corner of the battery cell and has a small detection range, in general, only the coaxial light source 2211 is needed to meet the lighting requirements, so the strip light source is an optional accessory for the corner detection component 24.

[0060] like Figure 1 and Figure 4 As shown, the corner detection assembly 24 also includes a mounting frame 242, and the mounting frame 242 has at least two mounting positions. The corner detection member 241 can be set at any mounting position of the mounting frame 242. When the size of the battery cell changes, the position of the angle dividing line of its corner will also change. At this time, the corner detection member 241 needs to be installed at the corresponding mounting position to ensure the detection effect. It is worth noting that the mounting frame 242 needs to set the mounting position according to the size of the commonly used battery cell, so that the operator can quickly determine the required installation position of the corner detection member 241 to improve efficiency.

[0061] It should be noted that, due to the small size of the battery cell, the side detection member 221 and the corner detection member 241 are prone to blocking each other. Therefore, during the detection, the side can be detected first, and after the side detection member 221 is detected, it stays in a position that does not block the corner detection member 241, and the corner detection member 241 then detects the corner of the battery cell.

[0062] like Figure 2 As shown, in order to facilitate the loading and unloading of the appearance inspection mechanism 20, the inspection platform 21 includes a table 211 and a lifting platform 212. The lifting platform 212 is arranged on the table 211 in a vertical direction and is configured to support the battery cell group 100. When loading is required, the lifting platform 212 is raised so that there is no other structure blocking the lifting platform 212, so that the battery cell can be placed on the lifting platform 212, and then the lifting platform 212 is lowered to a height suitable for the side detection member 221 and the corner detection member 241 to detect; after the detection is completed, the lifting platform 212 is raised to facilitate the removal of the battery cell and to receive the next group of battery cells.

[0063] In this embodiment, the lifting and lowering of the lifting platform 212 is driven by a screw nut driving structure. The operator can accurately adjust the moving distance of the lifting platform 212 by controlling the number of turns of the screw. On the other hand, the screw can play a role of deceleration. When the screw rotates at a normal speed, the moving speed of the lifting platform 212 is slower, which can not only ensure the smooth movement of the lifting platform 212, but also improve the accuracy of adjusting the position of the lifting platform 212.

[0064] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. An appearance detection mechanism, characterized in that: include: A testing platform (21), wherein the testing platform (21) is configured to support a piece to be tested; A plurality of side edge detection components (22), wherein the plurality of side edge detection components (22) are arranged on the detection platform (21), wherein the side edge detection components (22) comprise side edge detection members (221), and each of the side edge detection members (221) moves along the length direction of a side edge of the component to be detected and detects the side edge; A driving component (23), wherein the driving component (23) is configured to drive the plurality of side edge detection members (221) to move synchronously.

2. The appearance inspection mechanism according to claim 1, characterized in that: The driving assembly (23) comprises a synchronous belt (231) and a synchronous driving member, wherein the synchronous belt (231) is arranged around the member to be detected, a plurality of side detection members (221) are fixedly connected to the synchronous belt (231), and the synchronous driving member is configured to drive the synchronous belt (231) to rotate.

3. The appearance inspection mechanism according to claim 2, characterized in that: The synchronous belt (231) has a plurality of fixed sections (2311) corresponding to the plurality of side edges of the to-be-detected component, and each of the fixed sections (2311) is fixedly connected to at least one of the side edge detection components (221).

4. The appearance inspection mechanism according to claim 3, characterized in that: The side detection assembly (22) further comprises a slide rail (222), and the side detection member (221) is slidably disposed on the corresponding slide rail (222).

5. The appearance inspection mechanism according to claim 4, characterized in that: The slide rail (222) is parallel to the corresponding fixed section (2311).

6. The appearance inspection mechanism according to claim 3, characterized in that: The driving assembly (23) further comprises a plurality of steering wheels (232) and at least one adjusting wheel (233); the plurality of steering wheels (232) are arranged on the detection platform (21) to tension the synchronous belt (231) together; the fixed section (2311) is formed by the synchronous belt (231) between two adjacent steering wheels (232); the adjusting wheel (233) is movably arranged on the detection platform (21) and abuts against one section of the fixed section (2311); and the moving direction of the adjusting wheel (233) is arranged at an angle to the fixed section (2311).

7. The appearance inspection mechanism according to claim 6, characterized in that: The adjusting wheel (233) is located outside the synchronous belt (231).

8. The appearance inspection mechanism according to any one of claims 1 to 7, characterized in that: The appearance detection mechanism further comprises a plurality of corner detection components (24), wherein the corner detection components (24) comprise corner detection members (241), each of the corner detection members (241) being arranged corresponding to a corner of the member to be detected and detecting the corner.

9. The appearance inspection mechanism according to claim 8, characterized in that: The corner detection assembly (24) further comprises a mounting frame (242), wherein the mounting frame (242) has at least two mounting positions, and the corner detection member (241) can be arranged at any of the mounting positions of the mounting frame (242).

10. The appearance inspection mechanism according to any one of claims 1 to 7, characterized in that: The testing platform (21) comprises a tabletop (211) and a lifting platform (212); the lifting platform (212) is arranged on the tabletop (211) so as to be movable in a vertical direction; and the lifting platform (212) is configured to support a to-be-tested object.

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