A mechanism for detecting the appearance of an electrode post

Abstract

The utility model provides a kind of electric core cylindrical surface appearance detection mechanism, including at least one detection unit, the detection unit includes rotating support device, lifting drive arrangement, electric core positioning device, rotating drive arrangement, rotating position detection device and camera detection device;The rotating support device can be used to stably place electric core, and the electric core can rotate on the rotating support device along axis;The lifting drive arrangement can drive the rotating support device lifting movement;The electric core positioning device can limit the electric core in detection station, so that the electric core is parallel with the camera detection device;The rotating drive arrangement can drive the electric core rotates along axis;The rotating position detection device can detect the rotating position of the electric core in real time and feedback to the camera detection device;The camera detection device can photograph detection to the electric core cylindrical surface;So better position stability and image acquisition synchronism have, can improve detection effect.

Description

Technical Field

[0001] This utility model relates to the field of battery production technology, and in particular to a battery cell cylindrical appearance inspection mechanism. Background Technology

[0002] As the core component of batteries, battery cells play a crucial role in modern electronic devices. From smartphones and laptops to electric vehicles and energy storage systems, the quality of battery cells directly affects battery performance, and consequently, the performance and safety of the final product. With the development of modern technology, the requirements for the performance and safety of battery cells are increasing, which has also driven the continuous advancement and optimization of battery cell manufacturing processes.

[0003] In the production process of battery cells, in order to ensure the quality of the cells, it is necessary to use a cell cylinder appearance inspection agency to conduct appearance inspection on the cell cylinders. This includes defect identification, contamination inspection, dimensional accuracy verification, and welding quality assessment, thereby improving product reliability and ensuring battery quality and safety.

[0004] In existing technologies, a common method for inspecting the appearance of battery cell cylinders is to use a camera to photograph the cylinder surface during the cell's rotation. This method is efficient, flexible, and economical, and is widely used in many scenarios. However, current camera-based battery cell cylinder appearance inspection mechanisms have the following problems: (1) Poor positional stability, making it impossible to accurately control the height, left-right and front-back distances, and parallelism of the battery cell relative to the camera, affecting the effectiveness of the photographic inspection; (2) Poor image acquisition synchronization, with the camera frequently missing or mistaking images during cell rotation, resulting in unreliable inspection results. All of these problems affect the quality of the battery cell and are detrimental to product consistency management. Utility Model Content

[0005] This invention provides a battery cell cylindrical surface appearance inspection mechanism for inspecting the appearance of battery cell cylindrical surfaces. It features better positional stability and image acquisition synchronization, thus improving inspection results. The specific solution is as follows:

[0006] A battery cell cylindrical appearance inspection mechanism is used for the appearance inspection of battery cell cylindrical surfaces. It includes at least one inspection unit, and the inspection unit includes a rotating support device, a lifting drive device, a battery cell positioning device, a rotating drive device, a rotating position detection device, and a camera inspection device.

[0007] The rotating support device can be used to stably place the battery cell, and the battery cell can rotate along the axis on the rotating support device;

[0008] The lifting drive device can drive the rotary support device to move up and down;

[0009] The battery cell positioning device is fixed above the rotating support device, which can limit the battery cell on the rotating support device to the detection station, so that the battery cell is parallel to the camera detection device;

[0010] The rotary drive device can drive the battery cell to rotate along the axis;

[0011] The rotation position detection device can detect the rotation position of the battery cell in real time, and the rotation position detection device is electrically connected to the camera detection device;

[0012] The camera detection device is arranged in parallel with the cell positioning device, and can take pictures of the cylindrical surface of the cell for detection.

[0013] Furthermore, the rotating support device includes two sets of cell roller assemblies, and the two sets of cell roller assemblies are arranged in a mirror-symmetrical manner on both sides of the bottom of the cell cylinder; each set of cell roller assemblies includes at least one cell roller, and the cell roller can rotate axially synchronously with the axial rotation of the cell.

[0014] Furthermore, the distance between the two sets of battery cell roller assemblies is adjustable.

[0015] Furthermore, each group of the battery cell roller assemblies includes at least two battery cell rollers, and the distance between the battery cell rollers in the same group is adjustable.

[0016] Furthermore, the battery cell positioning device includes two positioning rollers that are horizontal and at the same height. The two positioning rollers are parallel to the camera detection device and are arranged in a mirror-symmetrical manner on both sides of the top of the battery cell cylinder.

[0017] Furthermore, one of the two positioning rollers is a rotary drive roller and the other is a driven positioning roller; the rotary drive device is a rotary drive motor, and the rotary drive device can drive the rotary drive roller to rotate along the axis; the driven positioning roller can rotate synchronously with the axial rotation of the battery cell.

[0018] Furthermore, the rotational position detection device is an encoder, and the rotational position detection device is installed at the end of the driven positioning roller, which can detect the rotation of the driven positioning roller and feed it back to the camera detection device.

[0019] Furthermore, silicone is provided at the point where the positioning roller contacts the battery cell.

[0020] Furthermore, the distance by which the lifting drive device drives the rotating support device to move up and down is adjustable.

[0021] Furthermore, it includes at least two detection units; the lifting drive device of each detection unit includes two sets of lifting components, which are arranged in a mirror-symmetrical manner on both sides of the rotary support device; the lifting components include a lifting drive link, a first slider, a first slide rail, a second slider, and a second slide rail; the first slide rail is vertically arranged, and the first slider is slidably connected to the first slide rail; the second slide rail is horizontally arranged, and the second slider is slidably connected to the second slide rail; the lifting drive link is inclined, and the top end of the lifting drive link is fixed to the first slider, and the bottom end of the lifting drive link is fixed to the second slider; between adjacent detection units, the second sliders located on the same side are fixedly connected by a first synchronous link, forming two groups of sliders that are mirror-symmetrical on both sides, and the two groups of sliders are fixedly connected by at least two second synchronous links to achieve synchronous movement of the slider groups on both sides; a transverse drive component is provided at the second slider of one of the detection units to drive the second slider to slide on the second slide rail.

[0022] The battery cell cylindrical appearance inspection mechanism provided by this utility model, through the cooperation of the rotating support device, lifting drive device, battery cell positioning device, rotating drive device, rotating position detection device, and camera detection device, can accurately and efficiently complete the appearance inspection of the battery cell cylindrical surface. Furthermore, the good cooperation between the rotating support device and the battery cell positioning device improves the positional stability of the battery cell cylindrical surface appearance inspection, precisely controlling the height, left-right and front-back distances, and parallelism of the battery cell relative to the camera, thus enhancing the image inspection effect. Simultaneously, the good cooperation between the rotating position detection device and the camera detection device improves the synchronization of image acquisition, avoiding missed or incorrect shots, making the inspection results more reliable, and thereby improving the production quality of the battery cells.

[0023] In some embodiments, the battery cell is supported by two sets of battery cell roller assemblies located on both sides of the bottom of the battery cell cylinder, which not only provide stable physical support and good positioning effect, but also make the rotation of the battery cell smoother and more fluid. This can improve the detection efficiency and accuracy of the battery cell cylinder appearance inspection mechanism and enhance the detection effect.

[0024] In some embodiments, the distance between the two sets of cell roller assemblies is adjustable, thereby adjusting the distance between the two sets of cell roller assemblies according to the diameter of the cell, so that the rotary support device can adapt to the support of more cell cylinders with different diameters, making it more applicable and versatile.

[0025] In some embodiments, each group of the battery cell roller assemblies includes at least two battery cell rollers, and the distance between the battery cell rollers in the same group is adjustable. This allows the distance between the battery cell rollers in the same group to be adjusted according to the length of the battery cell, so that the rotating support device can adapt to the support of more battery cell cylindrical surfaces of different lengths and sizes, and can further improve the applicability and versatility of the battery cell cylindrical surface appearance inspection mechanism.

[0026] In some embodiments, the battery cell is positioned by two positioning rollers that are mirror-symmetrically arranged on both sides of the top of the battery cell cylinder, resulting in better positioning effect and higher accuracy, which can improve the detection effect of the battery cell cylinder appearance inspection mechanism.

[0027] In some embodiments, silicone is provided at the contact point between the positioning roller and the battery cell to protect the surface of the battery cell, increase the friction between the positioning roller and the battery cell, and extend the service life of the positioning roller.

[0028] In some embodiments, the distance by which the lifting drive device drives the rotary support device to move up and down can be adjusted, thereby adjusting the lifting distance of the rotary support device according to the diameter of the battery cell. This allows the rotary support device to adapt to the support of battery cell cylinders with more different diameters, further improving the applicability and versatility of the battery cell cylinder appearance inspection mechanism.

[0029] In some embodiments, when the battery cell cylindrical appearance inspection mechanism includes at least two inspection units, the lifting drive device of multiple inspection units can be driven to perform lifting drive function by only one transverse drive component through the mutual cooperation of the lifting drive link, the first slider, the first slide rail, the second slider, the second slide rail, the first synchronous link and the second synchronous link. This not only has a simple structure and is easy to maintain, but also reduces production costs. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the battery cell structure.

[0031] Figure 2 This is a schematic diagram of the structure of the battery cell cylindrical appearance inspection mechanism.

[0032] Figure 3 A schematic diagram of the usage status of the battery cell cylindrical appearance inspection mechanism. Figure 1 (Hidden camera components)

[0033] Figure 4 A schematic diagram of the usage status of the battery cell cylindrical appearance inspection mechanism. Figure 2 (Hidden camera components)

[0034] Figure 5This is a structural schematic diagram (sectional view) of the rotating support device and the cell positioning device.

[0035] Figure 6 This is a schematic diagram of the lifting drive device.

[0036] The reference numerals in the attached figures are as follows: 1 is the battery cell, 11 is the cylindrical surface, 12 is the end face, 2 is the rotating support device, 21 is the battery cell roller, 3 is the lifting drive device, 31 is the lifting drive linkage, 32 is the first slider, 33 is the first slide rail, 34 is the second slider, 35 is the second slide rail, 36 is the first synchronous linkage, 37 is the second synchronous linkage, 38 is the lateral movement drive component, 4 is the battery cell positioning device, 41 is the positioning roller, 5 is the rotating drive device, 6 is the rotating position detection device, and 7 is the camera detection device. Detailed Implementation

[0037] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. For ease of explanation, the terms "front," "rear," "positive," "negative," "left," "right," "top," "bottom," "upper," "lower," "inner," "outer," and "inner" in this utility model indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model or limitations on the actual orientation of the product or device during production, use, sales, etc. In addition, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Furthermore, in the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," and "composition," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] This utility model provides a battery cell cylindrical surface appearance inspection mechanism, which can be used to perform appearance inspection on the cylindrical surface 11 of the battery cell 1 during the production process of the battery cell 1; in this embodiment, such as Figure 1 As shown, the battery cell 1 is a cylindrical battery cell. The cylindrical outer surface of the main body of the battery cell 1 (i.e., the side surface extending from one end of the battery cell 1 to the other end) is the cylindrical surface 11 of the battery cell 1. The planar portions at both ends of the battery cell 1 are the end faces 12 of the battery cell 1. The end faces 12 are perpendicular to the cylindrical surface 11. Of course, in addition to the battery cell 1 with the above structure, the appearance inspection of the cylindrical surface 11 of other similar battery cells 1 can also be applied, and there is no limitation here.

[0039] like Figure 2 The diagram shown is a structural schematic of the battery cell cylindrical appearance inspection mechanism. Figure 3 , Figure 4 The diagram shows the usage state of the battery cell cylindrical appearance inspection mechanism. Specifically, the battery cell cylindrical appearance inspection mechanism includes at least one inspection unit (in this embodiment, the battery cell cylindrical appearance inspection mechanism includes five inspection units; in actual applications, the number can be increased or decreased as needed, and no limitation is made here). The inspection unit includes a rotating support device 2, a lifting drive device 3, a battery cell positioning device 4, a rotating drive device 5, a rotating position detection device 6, and a camera detection device 7, wherein:

[0040] The rotating support device 2 can be used to stably place the battery cell 1, and the battery cell 1 can rotate along the axis on the rotating support device 2; the rotating support device 2 can be a roller assembly, a bearing assembly, etc., as long as it can stably place the battery cell 1 and allow the battery cell 1 to rotate along the axis on the rotating support device 2, and there is no limitation here;

[0041] The lifting drive device 3 can drive the rotating support device 2 to move up and down, thereby facilitating the picking and putting of the battery cell 1. The lifting drive device 3 can be a servo motor, cylinder, etc., and there are no restrictions here.

[0042] The battery cell positioning device 4 is fixed above the rotating support device 2, and can limit the battery cell 1 on the rotating support device 2, so that the battery cell 1 is accurately positioned on the inspection station, and the battery cell 1 is parallel to the camera inspection device 7.

[0043] The rotary drive device 5 can drive the battery cell 1 to rotate along the axis;

[0044] The rotation position detection device 6 can detect the rotation position of the battery cell in real time, and the rotation position detection device 6 is electrically connected to the camera detection device 7, so that the rotation position of the battery cell can be fed back to the camera detection device 7 to synchronize the image acquisition process; the rotation position detection device 6 can be an encoder, optical sensor, etc.

[0045] The camera detection device 7 is arranged parallel to the cell positioning device 4. It can receive the rotation position of the cell fed back by the rotation position detection device 6, and take pictures of the cylindrical surface 11 of the cell 1 according to the rotation position of the cell.

[0046] When using it, firstly as Figure 3As shown, the rotating support device 2 is in a lowered state. The battery cell 1 is placed in the rotating support device 2, and then the lifting drive device 3 drives the rotating support device 2 to rise until it moves to the battery cell positioning device 4. Figure 4 , Figure 5 As shown, the cell positioning device 4 limits the cell 1 on the rotating support device 2, so that the cell 1 is positioned at a fixed detection station and parallel to the camera detection device 7; then the rotating drive device 5 drives the cell 1 to rotate along the axis on the rotating support device 2. At the same time, the rotating position detection device 6 detects the rotation position of the cell in real time and feeds it back to the camera detection device 7. The camera detection device 7 takes pictures of the cylindrical surface 11 of the cell 1 according to the rotation position of the cell; after the detection is completed, the lifting drive device 3 drives the rotating support device 2 to descend, at which time the cell 1 can be removed.

[0047] The battery cell cylindrical surface appearance inspection mechanism with the above structure, through the cooperation of the rotating support device 2, lifting drive device 3, battery cell positioning device 4, rotating drive device 5, rotating position detection device 6, and camera detection device 7, can accurately and efficiently complete the appearance inspection of the cylindrical surface 11 of the battery cell 1. Furthermore, the good cooperation between the rotating support device 2 and the battery cell positioning device 4 can improve the positional stability of the appearance inspection of the cylindrical surface 11 of the battery cell 1, and accurately control the height, left-right and front-back distance, and parallelism of the battery cell relative to the camera, thus improving the effect of image inspection. Simultaneously, the good cooperation between the rotating position detection device 6 and the camera detection device 7 can improve the synchronization of image acquisition, avoid missed or incorrect shots, and make the inspection results more reliable; thereby improving the production quality of the battery cell.

[0048] In some embodiments, such as Figure 3 As shown, the rotating support device 2 includes two sets of cell roller assemblies, and the two sets of cell roller assemblies are arranged in a mirror-symmetrical manner on both sides of the bottom of the cylindrical surface 11 of the cell 1, that is, each side corresponds to one set of cell roller assemblies (e.g., in this embodiment). Figure 3As shown, one set of the battery cell roller assemblies is located on the front side of the bottom of the cylindrical surface 11 of the battery cell 1, and another set of the battery cell roller assemblies is located on the rear side of the bottom of the cylindrical surface 11 of the battery cell 1. Each set of the battery cell roller assemblies includes at least one battery cell roller 21 (in this embodiment, each set of the battery cell roller assemblies includes two battery cell rollers 21. In practical applications, it can be determined according to the specific parameters of the battery cell 1. For example, it can be one battery cell roller 21 per set, that is, one battery cell roller 21 on each side, or multiple battery cell rollers 21 per set, that is, multiple battery cell rollers 21 on each side. There is no limitation here). The battery cell rollers 21 can rotate axially synchronously with the axial rotation of the battery cell 1.

[0049] The battery cell cylindrical appearance inspection mechanism with the above structure supports the battery cell 1 by means of two sets of battery cell roller assemblies consisting of battery cell rollers 21 located on both sides of the bottom of the cylindrical surface 11 of the battery cell 1. This not only provides stable physical support and good positioning effect, but also makes the rotation of the battery cell 1 smoother and more fluid. This can improve the inspection efficiency and accuracy of the battery cell cylindrical appearance inspection mechanism and enhance the inspection effect.

[0050] In some embodiments, the distance between the two sets of cell roller assemblies can be adjusted, specifically depending on the diameter of the cell 1.

[0051] The battery cell cylindrical surface appearance inspection mechanism with the above structure has adjustable distance between the two sets of battery cell roller assemblies. This allows the distance between the two sets of battery cell roller assemblies to be adjusted according to the diameter of the battery cell 1, so that the rotating support device 2 can adapt to support more battery cell 1 cylindrical surfaces 11 with different diameters, resulting in higher applicability and better versatility.

[0052] In some embodiments, each group of the cell roller assemblies includes at least two cell rollers 21, that is, at least two cell rollers 21 are provided on each side of the bottom of the cylindrical surface 11 of the cell 1, and the distance between the cell rollers 21 in the same group is adjustable.

[0053] The battery cell cylindrical surface appearance inspection mechanism with the above structure includes at least two battery cell rollers 21 in each group of battery cell roller assemblies, and the distance between the battery cell rollers 21 in the same group is adjustable. This allows the distance between the battery cell rollers 21 in the same group to be adjusted according to the length of the battery cell 1, so that the rotating support device 2 can adapt to the support of more battery cell cylindrical surfaces 11 of different lengths, which can further improve the applicability and versatility of the battery cell cylindrical surface appearance inspection mechanism.

[0054] In some embodiments, such as Figure 3As shown, the cell positioning device 4 includes two horizontal positioning rollers 41 at the same height. The two positioning rollers 41 are parallel to the camera detection device 7 and are arranged symmetrically on both sides of the top of the cylindrical surface 11 of the cell 1, for example, in this embodiment. Figure 3 As shown, one of the positioning rollers 41 is located on the front side of the top of the cylindrical surface 11 of the battery cell 1, and the other positioning roller 41 is located on the rear side of the top of the cylindrical surface 11 of the battery cell 1.

[0055] The battery cell cylindrical appearance inspection mechanism with the above structure uses two positioning rollers 41 that are mirror-symmetrically arranged on both sides of the top of the cylindrical surface 11 of the battery cell 1 to position the battery cell 1. The positioning effect is better and the accuracy is higher, which can improve the inspection effect of the battery cell cylindrical appearance inspection mechanism.

[0056] In some embodiments, one of the two positioning rollers 41 is a rotary drive roller and the other is a driven positioning roller; the rotary drive device 5 is a rotary drive motor, and the rotary drive device 5 can drive the rotary drive roller to rotate along the axis; the driven positioning roller can rotate synchronously with the axial rotation of the battery cell 1.

[0057] The battery cell cylindrical appearance inspection mechanism with the above structure can drive the battery cell 1 to rotate along the axis by driving the rotary drive roller along the axis through the rotary drive device 5, without directly acting on the battery cell 1. This reduces the risk of scratches or other damage to the surface of the battery cell 1 and improves the reliability of the battery cell cylindrical appearance inspection mechanism.

[0058] In some embodiments, the rotational position detection device 6 is an encoder, and the rotational position detection device 6 is installed at the end of the driven positioning roller, which can detect the rotation of the driven positioning roller and feed it back to the camera detection device 7.

[0059] The battery cell cylindrical appearance inspection mechanism with the above structure can detect the rotation of the driven positioning roller by installing the encoder at the end of the driven positioning roller. The rotation position of the battery cell 1 can be obtained by conversion. The structure is simple, the detection accuracy is high, and the reliability is good.

[0060] In some embodiments, silicone is provided at the contact point between the positioning roller 41 and the battery cell 1 to protect the surface of the battery cell 1, increase the friction between the positioning roller 41 and the battery cell 1, and extend the service life of the positioning roller 41.

[0061] In some embodiments, the distance by which the lifting drive device 3 drives the rotating support device 2 to move up and down can be adjusted, thereby adjusting the lifting distance of the rotating support device 2 according to the diameter of the battery cell 1. This allows the rotating support device 2 to adapt to the support of more battery cell 1 cylindrical surfaces 11 with different diameters, further improving the applicability and versatility of the battery cell cylindrical surface appearance inspection mechanism.

[0062] In some embodiments, such as Figure 6 As shown, when the cell cylindrical appearance inspection mechanism includes at least two inspection units, the lifting drive device 3 of each inspection unit includes two sets of lifting components, which are arranged in a mirror-symmetrical manner on both sides of the rotating support device 2; as shown Figure 3 , Figure 5 , Figure 6 As shown, the lifting assembly includes a lifting drive link 31, a first slider 32, a first slide rail 33, a second slider 34, and a second slide rail 35; the first slide rail 33 is vertically arranged, and the first slider 32 is slidably connected to the first slide rail 33; the second slide rail 35 is horizontally arranged, and the second slider 34 is slidably connected to the second slide rail 35; the lifting drive link 31 is inclined, and the top end of the lifting drive link 31 is fixed to the first slider 32, and the bottom end of the lifting drive link 31 is fixed to the second slider 34; when the second slider 34 moves horizontally on the second slide rail 35... When in motion, the lifting drive linkage 31 can be used to convert the first slider 32 into a vertical lifting motion on the first slide rail 33, thus giving full play to the lifting drive function of the lifting drive device 3; between adjacent detection units, the second sliders 34 located on the same side are fixedly connected by the first synchronous linkage 36, forming two slider groups that are mirror symmetrical on both sides. The two slider groups are fixedly connected by at least two second synchronous linkages 37 to realize the synchronous movement of the slider groups on both sides; a transverse drive component 38 is provided at the second slider 34 of one of the detection units, which can drive the second slider 34 to slide on the second slide rail 35.

[0063] The battery cell cylindrical appearance inspection mechanism with the above structure, through the coordinated cooperation of the lifting drive link 31, the first slider 32, the first slide rail 33, the second slider 34, the second slide rail 35, the first synchronous link 36 and the second synchronous link 37, can drive the lifting drive device 3 of multiple inspection units to perform the lifting drive function with only one transverse drive component 38. It is not only simple in structure and easy to maintain, but also reduces production costs.

[0064] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of implementation of the present utility model. All equivalent changes made in accordance with the shape, structure and principle of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A battery cell cylindrical surface appearance inspection mechanism, used for appearance inspection of the cylindrical surface (11) of a battery cell (1), characterized in that, It includes at least one detection unit, which includes a rotating support device (2), a lifting drive device (3), a cell positioning device (4), a rotating drive device (5), a rotating position detection device (6), and a camera detection device (7); The rotating support device (2) can be used to stably place the battery cell (1), and the battery cell (1) can rotate along the axis on the rotating support device (2); The lifting drive device (3) can drive the rotating support device (2) to move up and down; The battery cell positioning device (4) is fixed above the rotating support device (2), which can limit the battery cell (1) on the rotating support device (2) to the detection station, so that the battery cell (1) is parallel to the camera detection device (7); The rotary drive device (5) can drive the battery cell (1) to rotate along the axis; The rotation position detection device (6) can detect the rotation position of the battery cell in real time, and the rotation position detection device (6) is electrically connected to the camera detection device (7); The camera detection device (7) is arranged in parallel with the cell positioning device (4) and can take pictures of the cylindrical surface (11) of the cell (1) for detection.

2. The cell cylindrical appearance inspection mechanism according to claim 1, characterized in that, The rotating support device (2) includes two sets of battery cell roller assemblies, and the two sets of battery cell roller assemblies are arranged in a mirror symmetrical manner on both sides of the bottom of the cylindrical surface (11) of the battery cell (1); each set of battery cell roller assemblies includes at least one battery cell roller (21), and the battery cell roller (21) can rotate axially synchronously with the axial rotation of the battery cell (1).

3. The cell cylindrical appearance inspection mechanism according to claim 2, characterized in that, The distance between the two sets of battery cell roller assemblies is adjustable.

4. The cell cylindrical appearance inspection mechanism according to claim 2, characterized in that, Each group of the battery cell roller assemblies includes at least two battery cell rollers (21), and the distance between the battery cell rollers (21) in the same group is adjustable.

5. The battery cell cylindrical surface appearance inspection mechanism according to claim 1, characterized in that, The battery cell positioning device (4) includes two positioning rollers (41) that are horizontal and at the same height. The two positioning rollers (41) are parallel to the camera detection device (7) and are arranged in a mirror-symmetrical manner on both sides of the top of the cylindrical surface (11) of the battery cell (1).

6. The cell cylindrical surface appearance inspection mechanism according to claim 5, characterized in that, One of the two positioning rollers (41) is a rotary drive roller and the other is a driven positioning roller; the rotary drive device (5) is a rotary drive motor, and the rotary drive device (5) can drive the rotary drive roller to rotate along the axis; the driven positioning roller can rotate synchronously with the axial rotation of the battery cell (1).

7. The cell cylindrical appearance inspection mechanism according to claim 6, characterized in that, The rotational position detection device (6) is an encoder, and the rotational position detection device (6) is installed at the end of the driven positioning roller, which can detect the rotation of the driven positioning roller and feed it back to the camera detection device (7).

8. The cell cylindrical appearance inspection mechanism according to claim 5, characterized in that, Silicone is provided at the point where the positioning roller (41) contacts the battery cell (1).

9. The battery cell cylindrical surface appearance inspection mechanism according to claim 1, characterized in that, The distance by which the lifting drive device (3) drives the rotating support device (2) to move up and down is adjustable.

10. The cell cylindrical appearance inspection mechanism according to any one of claims 1 to 9, characterized in that, It includes at least two detection units; the lifting drive device (3) of each detection unit includes two sets of lifting components, which are arranged in a mirror image symmetrically on both sides of the rotary support device (2); the lifting components include a lifting drive link (31), a first slider (32), a first slide rail (33), a second slider (34), and a second slide rail (35); the first slide rail (33) is vertically arranged, and the first slider (32) is slidably connected to the first slide rail (33); the second slide rail (35) is horizontally arranged, and the second slider (34) is slidably connected to the second slide rail (35); the lifting drive link (31) is inclined. The top end of the lifting drive link (31) is fixed on the first slider (32), and the bottom end of the lifting drive link (31) is fixed on the second slider (34). The second sliders (34) on the same side of adjacent detection units are fixedly connected by the first synchronous link (36), forming two slider groups that are mirror symmetrical on both sides. The two slider groups are fixedly connected by at least two second synchronous links (37) to realize the synchronous movement of the slider groups on both sides. A transverse drive component (38) is provided at the second slider (34) of one of the detection units to drive the second slider (34) to slide on the second slide rail (35).

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