Foreign matter detection device for power battery pack

Abstract

The utility model discloses a foreign matter detection device for a power battery pack, and relates to the technical field of battery pack detection equipment. The battery pack packaging device specifically comprises a clamping assembly which forms a clamping space and is used for clamping an unpackaged battery pack in the clamping space; the driving assembly is connected to the clamping assembly, and after the clamping assembly completes clamping of the unpackaged battery pack, the driving assembly drives the clamping assembly to swing so as to drive the unpackaged battery pack to swing; and the visual detection assembly is used for detecting foreign matters in the unpackaged battery pack, and the visual detection assembly and the unpackaged battery pack are kept relatively static. The objective of the utility model is to enable an existing visual camera to detect foreign matters in gaps of a battery pack and expand the detection range.

Description

Technical Field

[0001] This utility model relates to the technical field of battery pack testing equipment, and in particular to a foreign object detection device for power battery packs. Background Technology

[0002] With the rapid development of the new energy vehicle industry, the quality control requirements for battery packs are becoming increasingly stringent. As a core component of new energy vehicles, the performance and safety of the battery pack play a crucial role in the stability, range, and lifespan of the entire vehicle. The battery pack packaging process is one of the key steps in ensuring battery safety, performance, and lifespan. Before sealing the battery pack, foreign object detection becomes an important step in ensuring its quality and safety. In particular, foreign objects such as metal fragments and liquids, if left inside the battery pack, may lead to a series of serious safety hazards, including short circuits, thermal runaway, and other accidents, potentially causing damage to the battery pack and even the entire vehicle. In addition, foreign objects can also affect the battery's lifespan and performance, leading to decreased battery efficiency or failure to achieve the expected performance.

[0003] Currently, foreign object detection in new energy vehicle battery packs mainly relies on manual visual inspection. While this method is simple to operate, it suffers from low efficiency, susceptibility to human error, and insufficient detection accuracy.

[0004] To address this issue, inspection methods based on vision camera technology have emerged on the market. Vision camera systems can use image recognition technology to replace manual visual inspection, achieving automated inspection of battery packs. This method can improve inspection efficiency and reduce human error to some extent. However, existing vision cameras cannot detect foreign objects hidden in the gaps of the battery pack, resulting in the omission of such objects.

[0005] Therefore, how to enable existing vision cameras to detect foreign objects in the gaps of battery packs and expand their detection range has become an urgent technical problem to be solved. Utility Model Content

[0006] The main purpose of this invention is to provide a foreign object detection device for power battery packs, which aims to enable existing vision cameras to detect foreign objects in the gaps of the battery packs and expand their detection range.

[0007] To achieve the above objectives, this utility model proposes a foreign object detection device for a power battery pack, comprising:

[0008] Clamping components form a clamping space for clamping an unpackaged battery pack within the clamping space;

[0009] A driving component, connected to the clamping component, drives the clamping component to swing after the clamping component has finished clamping the unpackaged battery pack; and

[0010] A visual inspection component is used to detect foreign objects inside an unpackaged battery pack, and the visual inspection component remains relatively stationary with respect to the unpackaged battery pack.

[0011] This power battery pack foreign object detection device can accurately and stably clamp the unsealed battery pack through the clamping component, and use the driving component to drive the clamping component to swing, thereby causing the unsealed battery pack to swing at multiple angles, so that foreign objects in the gaps of the unsealed battery pack can be dislodged from the gaps. The vision detection component maintains relative stillness with the unsealed battery pack, thereby being able to comprehensively collect the internal conditions of the unsealed battery pack, and realize rapid, comprehensive and accurate detection of foreign objects inside the unsealed battery pack.

[0012] In one embodiment of this application, the clamping assembly includes:

[0013] The first fixed plate has a first rotating shaft on its outer side;

[0014] A second fixing plate is disposed opposite to the first fixing plate, and a second rotating shaft is provided on the side of the second fixing plate away from the first fixing plate;

[0015] The first lead screw is rotatably connected between the first fixed plate and the second fixed plate;

[0016] At least one guide rod is connected between the first fixed plate and the second fixed plate, and the length direction of the guide rod is parallel to the length direction of the first lead screw.

[0017] The movable clamping plate is threadedly connected to the first lead screw and slidably connected to the guide rod; and

[0018] The second driving component, with its rotating shaft connected to the first lead screw, drives the first lead screw to rotate, thereby moving the movable clamping plate closer to or away from the second fixed plate, thus clamping or releasing the unencapsulated battery pack.

[0019] It can precisely adjust the position of the movable clamping plate to stably and accurately clamp the unencapsulated battery pack. The structure is simple and reliable, and the clamping force control is highly accurate, ensuring that the unencapsulated battery pack will not shift or be damaged during the clamping process. This improves the accuracy, stability and safety of foreign object detection in power battery packs, and significantly enhances production efficiency and product inspection quality.

[0020] In one embodiment of this application, a second lead screw is provided between the first fixing plate and the second fixing plate. The length direction of the second lead screw is parallel to the length direction of the first lead screw. The movable clamping plate is threadedly connected to the second lead screw, and the first lead screw and the second lead screw rotate synchronously.

[0021] This effectively avoids issues such as uneven load, jamming, or uneven movement of the movable clamping plate due to a single lead screw drive, improves the stability of the movable clamping plate during movement, and ensures a smoother and more reliable clamping process, thereby significantly improving the stability and detection accuracy of the foreign object detection device for power battery packs.

[0022] In one embodiment of this application, the movable clamping plate is provided with a first clamping crossbeam, and the second fixed plate is provided with a second clamping crossbeam. The first clamping crossbeam can move closer to or away from the second clamping crossbeam under the action of the movable clamping plate. The first clamping crossbeam and / or the second clamping crossbeam are provided with anti-slip pads.

[0023] The unpackaged battery pack is reliably clamped using the anti-slip pads on the first and second clamping beams, preventing slippage or damage during clamping. This effectively improves the safety and stability of the clamping process, ensures the accurate positioning of the unpackaged battery pack during clamping, and helps improve the accuracy of subsequent visual inspection processes.

[0024] In one embodiment of this application, the driving component includes:

[0025] A first support plate, wherein the first rotating shaft is rotatably connected to the first support plate;

[0026] A second support plate, the second rotating shaft being rotatably connected to the second support plate; and

[0027] A first driving component, connected to the first rotating shaft, is used to drive the first rotating shaft to rotate, thereby causing the clamping assembly to swing.

[0028] The first rotating shaft is driven to rotate by the first driving component, thereby realizing the overall swing motion of the clamping component. This effectively ensures that the clamping component moves smoothly and reliably during the swing process, with high positioning accuracy. It also helps the vision inspection component to efficiently detect foreign objects inside the unpackaged battery pack from multiple angles, significantly improving the detection accuracy.

[0029] In one embodiment of this application, the visual detection component includes:

[0030] The connecting rod has its first end connected to the movable clamping plate;

[0031] A rotating rod is rotatably connected to the second end of the connecting rod;

[0032] A support arm, the first end of which is connected to the rotating rod and can rotate with the rotating rod; and

[0033] A camera, connected to the second end of the support arm, is used to detect foreign objects inside the unencapsulated battery pack.

[0034] The visual inspection component is connected to the movable clamping plate via a connecting rod to ensure the positional accuracy and stability of the camera relative to the clamped unpackaged battery pack. The camera position can be flexibly adjusted through the rotating rod and support arm structure, ensuring that the camera can perform multi-angle visual inspection of the inside of the unpackaged battery pack, significantly improving the inspection accuracy.

[0035] In one embodiment of this application, the connecting rod is provided with a third driving member for driving the rotating rod to rotate, thereby adjusting the position of the camera.

[0036] The camera's rotation position can be precisely controlled through a third drive component, enabling the vision inspection component to flexibly inspect the interior of the unpackaged battery pack from all angles, effectively improving the coverage of vision inspection and further enhancing the automation level of the foreign object detection device for power battery packs.

[0037] In one embodiment of this application, a fill light is provided around the camera.

[0038] By placing supplementary lights around the camera lens, ideal lighting conditions are ensured for the camera at any rotating detection position, significantly improving visual detection performance and image recognition accuracy.

[0039] In one embodiment of this application, it further includes:

[0040] The support frame is located below the clamping components;

[0041] Multiple rollers, mounted on the support frame, are used to transport unpackaged battery packs to the detection area along a preset path;

[0042] A lifting base is located below the detection area and between two adjacent rollers. The lifting base is equipped with a lifting cylinder for lifting the unpackaged battery pack in the detection area to the clamping space.

[0043] The unpackaged battery pack is automatically transported via a roller conveyor track. At the same time, the lifting cylinder on the lifting base precisely and smoothly lifts the unpackaged battery pack into the clamping space, ensuring that the clamping components can accurately and reliably clamp the unpackaged battery pack. This further improves the automation level, clamping stability and detection accuracy of the device, and effectively improves the efficiency and quality of foreign object detection.

[0044] In one embodiment of this application, it further includes:

[0045] The fourth driving component is used to drive multiple rollers to rotate synchronously.

[0046] The fourth drive component drives the chain to rotate all the rollers synchronously, effectively realizing the stable transport of unpackaged battery packs, significantly improving the smoothness of the transport process, and further improving the detection efficiency of the foreign object detection device.

[0047] Using the above technical solution, the power battery pack foreign object detection device can accurately and stably clamp the unsealed battery pack through the clamping component, and use the driving component to drive the clamping component to swing, thereby causing the unsealed battery pack to swing at multiple angles, so that foreign objects in the gaps of the unsealed battery pack can be detached from the gaps. The vision detection component can comprehensively collect the internal situation of the unsealed battery pack by maintaining relative stillness with the unsealed battery pack, thereby realizing rapid, comprehensive and accurate detection of foreign objects inside the unsealed battery pack. Attached Figure Description

[0048] The present invention will now be described in detail with reference to specific embodiments and accompanying drawings, wherein:

[0049] Figure 1 This is a schematic diagram of the structure of the first embodiment of the present utility model;

[0050] 11. First fixed plate; 12. Second fixed plate; 13. First lead screw; 14. Guide rod; 15. Second lead screw; 16. Movable clamping plate; 161. First clamping beam; 17. Second clamping beam; 18. Second driving component; 191. First rotating shaft; 192. Second rotating shaft; 21. First driving component; 22. First support plate; 23. Second support plate; 30. Roller; 31. Support frame; 41. Connecting rod; 42. Rotating rod; 43. Support arm; 44. Supplementary light; 45. Third driving component; 50. Lifting base; 51. Lifting cylinder. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the following specific embodiments are only used to explain this utility model and do not constitute a limitation on this utility model.

[0052] like Figure 1 As shown, in order to achieve the above objectives, this utility model proposes a foreign object detection device for a power battery pack, comprising:

[0053] Clamping components form a clamping space for clamping an unpackaged battery pack within the clamping space;

[0054] A drive component, connected to the clamping component, drives the clamping component to swing after the clamping component has finished clamping the unpackaged battery pack; and

[0055] A vision inspection component is used to detect foreign objects inside an unpackaged battery pack. The vision inspection component remains relatively stationary with respect to the unpackaged battery pack.

[0056] Specifically, a foreign object detection device for a power battery pack includes a clamping assembly, a driving assembly, and a vision detection assembly.

[0057] The clamping assembly includes two opposing clamping plates, forming a clamping space between them. The number of clamping plates can be adjusted to multiple plates as needed. Rubber pads can be installed on the inner surfaces of the clamping plates, and these pads are bonded to the plates. The rubber pads increase friction between the clamping plates and the surface of the unencapsulated battery pack and prevent damage. A clamping drive device is connected to the outer side of the clamping plates. This drive device can be either an electric push rod or a cylinder. When an electric push rod is used, its push rod end is bolted to the clamping plate. When a cylinder is used, its piston rod end is bolted to the clamping plate to move the clamping plates, thus clamping and releasing the unencapsulated battery pack. The clamping drive device is fixedly mounted on a clamping bracket, which is a frame structure. The clamping bracket is mounted on a clamping rotating base via a rotating shaft, and the clamping rotating base is bolted to the equipment base.

[0058] The drive assembly includes a rotary drive motor, which is fixed to the equipment base by bolts. The output shaft of the rotary drive motor is connected to a drive wheel, which is connected to a driven wheel on the clamping bracket by a belt. The driven wheel is mounted on the clamping bracket by bolts. The rotation of the drive wheel drives the driven wheel to rotate, thereby driving the clamping bracket to swing, which in turn causes the clamping plate and the unpackaged battery pack located in the clamping space to swing together.

[0059] The visual inspection component includes an inspection bracket, a visual camera, and a ring light. The inspection bracket is bolted to a clamping bracket and has a vertically oriented column structure. A cantilevered visual camera mounting bracket is installed at the top of the column, and a visual camera is mounted at the end of the mounting bracket. The visual camera is connected to the mounting bracket via a threaded connection, with its lens facing downwards. A ring light is also bolted to the mounting bracket, positioned around the lens of the visual camera and aligned with the optical axis centerline of the camera to provide uniform illumination. The visual camera remains relatively stationary with respect to the unpackaged battery pack within the clamping space. The visual camera captures images of the interior of the unpackaged battery pack and transmits these images to an image processing system for foreign object identification. The image processing system uses the YOLOv5 image recognition algorithm for detection and analysis to determine if screws or other foreign objects are present inside the unpackaged battery pack. If a foreign object is detected, the image processing system issues an alarm signal and displays the alarm information on the control panel for appropriate handling by personnel. If the image processing system determines that no foreign objects are present inside the unpackaged battery pack, the unpackaged battery pack is released for subsequent processes.

[0060] Using the above technical solution, the power battery pack foreign object detection device can accurately and stably clamp the unsealed battery pack through the clamping component, and use the driving component to drive the clamping component to swing, thereby causing the unsealed battery pack to swing at multiple angles, so that foreign objects in the gaps of the unsealed battery pack can be detached from the gaps. The vision detection component can comprehensively collect the internal situation of the unsealed battery pack by maintaining relative stillness with the unsealed battery pack, thereby realizing rapid, comprehensive and accurate detection of foreign objects inside the unsealed battery pack.

[0061] In one embodiment of this application, the clamping component includes:

[0062] The first fixed plate 11 has a first rotating shaft 191 on its outer side;

[0063] The second fixing plate 12 is disposed opposite to the first fixing plate 11, and a second rotating shaft 192 is provided on the side of the second fixing plate 12 away from the first fixing plate 11.

[0064] The first lead screw 13 is rotatably connected between the first fixed plate 11 and the second fixed plate 12;

[0065] At least one guide rod 14 is connected between the first fixed plate 11 and the second fixed plate 12, and the length direction of the guide rod 14 is parallel to the length direction of the first lead screw 13.

[0066] The movable clamping plate 16 is threadedly connected to the first lead screw 13 and slidably connected to the guide rod 14; and

[0067] The second driving component 18 has a rotating shaft connected to the first lead screw 13 and is used to drive the first lead screw 13 to rotate so that the movable clamping plate 16 moves closer to or away from the second fixed plate 12, thereby clamping or releasing the unencapsulated battery pack.

[0068] Specifically, the clamping assembly includes a first fixing plate 11, a second fixing plate 12, a first lead screw 13, at least one guide rod 14, a movable clamping plate 16, and a second driving component 18. The first fixing plate 11 is a rectangular metal plate structure, and a first rotating shaft 191 is welded and fixed to the center of its outer surface. The first rotating shaft 191 is rotatably connected to an external support frame via bearings. The second fixing plate 12 has the same structure and dimensions as the first fixing plate 11, and is parallel to and opposite to the first fixing plate 11. A second rotating shaft is welded and fixed to the center of its outer surface. 192, the second rotating shaft 192 is rotatably connected to the external support frame via bearings; the first lead screw 13 is a cylindrical structure, and its two ends are rotatably connected between the first fixed plate 11 and the second fixed plate 12 via bearings, respectively. The two ends of the first lead screw 13 are fixed to the inner surfaces of the first fixed plate 11 and the second fixed plate 12 via bearing seats; at least one guide rod 14 can specifically be two, the two guide rods 14 are cylindrical optical shaft structures, symmetrically distributed on both sides of the first lead screw 13, and the two ends of the two guide rods 14 are respectively fixed to the first fixed plate 11 and the second fixed plate via screws. On the inner side of 12, the length directions of the two guide rods 14 are parallel to the length direction of the first lead screw 13; the movable clamping plate 16 is a rectangular plate structure, with one lead screw mounting hole and at least two guide holes. The lead screw mounting hole is located in the middle of the movable clamping plate 16, and an internal thread that mates with the external thread of the first lead screw 13 is provided in the lead screw mounting hole. At least two guide holes are located on both sides of the lead screw mounting hole, and linear bearings are provided in the guide holes. The movable clamping plate 16 is threaded to the first lead screw 13 through the lead screw mounting hole and slidably connected to the two guide rods 14 through the linear bearings, thereby ensuring... The movable clamping plate 16 can move axially along the first lead screw 13 and the guide rod 14 without rotating; the second driving member 18 is specifically a servo motor or a stepper motor. The second driving member 18 is connected to the outer side of the first fixed plate 11 through a motor mounting bracket screw. The output shaft of the second driving member 18 is connected to the end of the first lead screw 13 through a coupling, thereby driving the first lead screw 13 to rotate, so that the movable clamping plate 16 moves smoothly along the guide rod 14 towards or away from the second fixed plate 12, realizing the action of clamping or releasing the unencapsulated battery pack placed between the movable clamping plate 16 and the second fixed plate 12.

[0069] By adopting the above technical solution, the position of the movable clamping plate 16 can be precisely adjusted, so that the unencapsulated battery pack is stably and accurately clamped. The structure is simple and reliable, and the clamping force control accuracy is high. It ensures that the unencapsulated battery pack will not be shifted or damaged during the clamping process, thereby improving the accuracy, stability and safety of foreign object detection of power battery packs, and significantly improving production efficiency and product inspection quality.

[0070] In one embodiment of this application, a second lead screw 15 is provided between the first fixing plate 11 and the second fixing plate 12. The length direction of the second lead screw 15 is parallel to the length direction of the first lead screw 13. The movable clamping plate 16 is threadedly connected to the second lead screw 15, and the first lead screw 13 and the second lead screw 15 rotate synchronously.

[0071] Specifically, a second lead screw 15 is provided between the first fixed plate 11 and the second fixed plate 12. The second lead screw 15 has a cylindrical structure, and its length direction is parallel to that of the first lead screw 13. Both ends of the second lead screw 15 are rotatably connected to the inner surfaces of the first fixed plate 11 and the second fixed plate 12 via bearing seats. The second lead screw 15 is located on one side of the first lead screw 13 and is arranged parallel to it. A mounting hole for the second lead screw 15 is provided on the movable clamping plate 16 corresponding to the position of the second lead screw 15. The inner wall of the mounting hole for the second lead screw 15 has an internal thread that matches the external thread of the second lead screw 15. The movable clamping plate 16 passes through the mounting hole for the second lead screw 15. The screw is threaded onto the second lead screw 15 to further ensure the stability and balance of the movable clamping plate 16 during movement. The first lead screw 13 and the second lead screw 15 rotate synchronously through a synchronous transmission device. The synchronous transmission device specifically includes a synchronous pulley fixed to one end of the first lead screw 13 and the second lead screw 15 respectively, and a synchronous belt sleeved on the outside of the synchronous pulley. The synchronous pulley is fixed to the outside of the ends of the first lead screw 13 and the second lead screw 15 by a key connection or screw connection. The synchronous belt drives the first lead screw 13 and the second lead screw 15 to rotate synchronously, so that the movable clamping plate 16 can move smoothly along the guide rod 14, thereby achieving uniform, reliable, and stable clamping and release of the unencapsulated battery pack.

[0072] By adopting the above technical solution, the problems of uneven load, jamming or unsmooth movement of the movable clamping plate 16 due to the single lead screw drive are effectively avoided, the stability of the movable clamping plate 16 during movement is improved, and the clamping process is made more stable and reliable, thereby significantly improving the stability and detection accuracy of the power battery pack foreign object detection device.

[0073] In one embodiment of this application, a first clamping crossbeam 161 is provided on the movable clamping plate 16, and a second clamping crossbeam 17 is provided on the second fixed plate 12. The first clamping crossbeam 161 can move closer to or further away from the second clamping crossbeam 17 under the action of the movable clamping plate 16. Anti-slip pads are provided on the first clamping crossbeam 161 and / or the second clamping crossbeam 17.

[0074] Specifically, the movable clamping plate 16 is provided with a first clamping crossbeam 161, which is a rectangular cross-section metal beam structure. The first clamping crossbeam 161 is fixedly connected to the middle of the inner side of the movable clamping plate 16 by screws. The second fixed plate 12 is provided with a second clamping crossbeam 17, which is also a rectangular cross-section metal beam structure. The second clamping crossbeam 17 is fixedly connected to the middle of the inner side of the second fixed plate 12 by screws. The length direction of the first clamping crossbeam 161 and the length direction of the second clamping crossbeam 17 are parallel to each other, and the first clamping crossbeam 161 and the second clamping crossbeam 17 are directly opposite each other. The first clamping crossbeam 161 can move along the movable clamping plate 16. The guide rod 14 and the lead screw move linearly along their length, allowing the first clamping beam 161 to move closer to or further away from the second clamping beam 17, thereby clamping or releasing the unencapsulated battery pack positioned between the first clamping beam 161 and the second clamping beam 17. Anti-slip pads are fixedly provided on the opposing surfaces of the first clamping beam 161 and the second clamping beam 17. The anti-slip pads are elongated structures made of rubber and are fixed to the clamping contact surfaces of the first clamping beam 161 and the second clamping beam 17 by adhesive bonding. The surface of the anti-slip pads has anti-slip textures to increase the friction on the unencapsulated battery pack during clamping and prevent the unencapsulated battery pack from sliding or shifting position during clamping.

[0075] By adopting the above technical solution, the anti-slip pads on the first clamping beam 161 and the second clamping beam 17 are used to reliably clamp the unpackaged battery pack, preventing slippage or damage during the clamping process. This effectively improves the safety and stability of the clamping process, ensures the accurate position of the unpackaged battery pack during clamping, and helps to improve the accuracy of the subsequent visual inspection process.

[0076] In one embodiment of this application, the driving component includes:

[0077] The first support plate 22 and the first rotating shaft 191 are rotatably connected to the first support plate 22;

[0078] The second support plate 23, and the second rotating shaft 192 are rotatably connected to the second support plate 23; and

[0079] The first driving component 21 is connected to the first rotating shaft 191 and is used to drive the first rotating shaft 191 to rotate so as to cause the clamping assembly to swing.

[0080] Specifically, the drive assembly includes a first support plate 22, a second support plate 23, and a first drive component 21. The first support plate 22 is a rectangular metal plate structure and is fixedly connected to the base of the device by bolts. One end of the first rotating shaft 191 is rotatably connected to the first support plate 22 via a bearing. The second support plate 23 is also a rectangular metal plate structure and is fixedly connected to the base of the device by bolts and is arranged parallel to the first support plate 22. One end of the second rotating shaft 192 is rotatably connected to the second support plate 23 via a bearing. The first drive component 21 can be a servo motor. The first drive component 21 is fixedly connected to the outer side of the first support plate 22 via a motor mounting bracket. The output shaft of the first drive component 21 is connected to the end of the first rotating shaft 191 via a coupling to drive the first rotating shaft 191 to rotate. The first rotating shaft 191 rotates under the drive of the first drive component 21, thereby causing the clamping assembly connected to the first rotating shaft 191 to swing around the axis of the first rotating shaft 191 and the second rotating shaft 192, realizing the swinging action of the clamping assembly on the unpackaged battery pack.

[0081] By adopting the above technical solution, the first rotating shaft 191 is driven to rotate by the first driving component 21, thereby realizing the overall swing motion of the clamping component. This effectively ensures that the clamping component moves smoothly and reliably during the swing process, with high positioning accuracy. It also helps the vision inspection component to efficiently detect foreign objects inside the unpackaged battery pack from multiple angles, significantly improving the detection accuracy.

[0082] In one embodiment of this application, the visual detection component includes:

[0083] The first end of the connecting rod 41 is connected to the movable clamping plate 16;

[0084] Rotating rod 42 is rotatably connected to the second end of connecting rod 41;

[0085] The support arm 43 has its first end connected to the rotating rod 42 and can rotate with the rotating rod 42; and

[0086] A camera, connected to the second end of the support arm 43, is used to detect foreign objects inside the unsealed battery pack.

[0087] Specifically, the visual inspection component includes a connecting rod 41, a rotating rod 42, a support arm 43, and a camera. The connecting rod 41 is a rectangular cross-section metal rod structure. The first end of the connecting rod 41 is fixedly connected to the side of the movable clamping plate 16 by screws or welding. The second end of the connecting rod 41 is provided with a rotating support for mounting the rotating rod 42, on which a bearing is mounted. The rotating rod 42 is a cylindrical metal rod, with one end passing through the bearing in the rotating support and rotatably connected to the connecting rod 41 via the bearing. The support arm 43 is a metal rod structure. The first end of the support arm 43 is fixedly connected to the other end of the rotating rod 42 by welding or screws. The support arm 43 can... The camera mount is located at the second end of the support arm 43 and rotates synchronously with the rotating rod 42. The camera mount is specifically an L-shaped metal bracket structure. The camera is fixedly connected to the camera mount by screws. The camera lens faces the inside of the unpackaged battery pack in the clamping space formed between the movable clamping plate 16 and the second fixed plate 12 to collect images of the inside of the unpackaged battery pack for foreign object detection. The camera's connecting cable is fixedly led out through the support arm 43 and the connecting rod 41 and then connected to an external image processing system. The rotating rod 42 can rotate relative to the connecting rod 41 to drive the support arm 43 and the camera to swing around the axis of the rotating rod 42, so as to realize multi-angle detection of different positions inside the unpackaged battery pack by the camera.

[0088] Using the above technical solution, the visual inspection component is connected to the movable clamping plate 16 via the connecting rod 41 to ensure the positional accuracy and stability of the camera relative to the clamped unpackaged battery pack. The position of the camera can be flexibly adjusted through the rotating rod 42 and the support arm 43 structure, ensuring that the camera can perform multi-angle visual inspection of the inside of the unpackaged battery pack, thus significantly improving the inspection accuracy.

[0089] In one embodiment of this application, a third driving member 45 is provided on the connecting rod 41 for driving the rotating rod 42 to rotate, so as to adjust the position of the camera.

[0090] Specifically, a third driving component 45 is provided on the connecting rod 41. The third driving component 45 is a servo motor or a stepper motor. The third driving component 45 is fixedly connected to the end of the connecting rod 41 near the rotating rod 42 by bolts. The output shaft of the third driving component 45 is directly connected to one end of the rotating rod 42 through a coupling, which is used to drive the rotating rod 42 to rotate around its own axis. When the third driving component 45 is powered on, its output shaft drives the rotating rod 42 to rotate, thereby driving the support arm 43 and the camera fixedly connected to the rotating rod 42 to rotate synchronously around the axis of the rotating rod 42. This allows for flexible adjustment of the camera's detection position relative to the unpackaged battery pack, facilitating accurate image acquisition and foreign object detection of different areas inside the unpackaged battery pack.

[0091] By adopting the above technical solution, the rotation position of the camera can be precisely controlled by the third driving component 45, enabling the vision inspection component to flexibly inspect the interior of the unpackaged battery pack from all angles, effectively improving the coverage of vision inspection and further enhancing the automation level of the foreign object detection device for the power battery pack.

[0092] In one embodiment of this application, a fill light 44 is provided around the camera.

[0093] Specifically, a supplementary light 44 is provided around the camera. The supplementary light 44 is a ring-shaped LED light structure. The supplementary light 44 is sleeved on the outer periphery of the camera lens and fixed to the support arm 43 by screw connection. The optical axis of the supplementary light 44 is coaxial with the optical axis of the camera lens. The supplementary light 44 is connected to an external power control module through wires and can adjust the illumination intensity according to the needs of the detection environment. This provides a uniform and sufficient lighting environment when the camera is acquiring images of the inside of the unencapsulated battery pack, improving the camera's shooting conditions and enhancing the clarity of the acquired images.

[0094] By adopting the above technical solution, by setting up supplementary lights 44 around the camera lens, it is ensured that the camera can obtain ideal lighting conditions at any rotating detection position, which significantly improves the visual detection effect and image recognition accuracy.

[0095] In one embodiment of this application, it further includes:

[0096] Support frame 31 is located below the clamping assembly;

[0097] Multiple rollers 30 are mounted on a support frame 31 for conveying unpackaged battery packs to the detection area along a preset path;

[0098] The lifting base 50 is located below the detection area and between two adjacent rollers 30. The lifting base 50 is equipped with a lifting cylinder 51, which is used to lift the unpackaged battery pack in the detection area to the clamping space.

[0099] Specifically, a foreign object detection device for a power battery pack also includes a support frame 31, multiple rollers 30, and a lifting base 50. The support frame 31 adopts a rectangular metal frame structure and is fixedly installed on the equipment base by bolts. The support frame 31 is located below the clamping assembly. The multiple rollers 30 are distributed in a straight line at equal intervals along the conveying direction. The two ends of the multiple rollers 30 are rotatably connected to the two side frames of the support frame 31 by bearings, so that the multiple rollers 30 can rotate freely. The multiple rollers 30 together form a roller 30 conveying track for conveying unpackaged battery packs. The rotation of the multiple rollers 30 conveys the unpackaged battery packs along a preset path to the detection area directly below the clamping assembly. The lifting base 50 is disposed inside the support frame 31 and located below the detection area, specifically between two adjacent rollers. Within the gap between rollers 30, the lifting base 50 is fixedly connected to the upper surface of the equipment base by bolts. A lifting cylinder 51 is fixedly installed on the top of the lifting base 50. The lifting cylinder 51 is a vertically installed single-rod cylinder structure. The piston rod end of the lifting cylinder 51 is fixedly connected to the lifting support plate by bolts. The lifting support plate adopts a rectangular plate structure and is used to support and lift the unpackaged battery pack located in the detection area. When the lifting cylinder 51 is working, it drives the piston rod to extend vertically to move the lifting support plate upward, lifting the unpackaged battery pack located in the detection area from the roller 30 conveying track to the clamping space. After the clamping component clamps the unpackaged battery pack, the lifting cylinder 51 drives the lifting support plate to descend to the initial position and detach from the unpackaged battery pack so that the clamping component and the vision inspection component can perform foreign object detection on the unpackaged battery pack.

[0100] By adopting the above technical solution, the unpackaged battery pack is automatically transported via the roller 30 conveying track. At the same time, the unpackaged battery pack is precisely and smoothly lifted into the clamping space by the lifting cylinder 51 on the lifting base 50, ensuring that the clamping components can accurately and reliably clamp the unpackaged battery pack. This further improves the automation level, clamping stability and detection accuracy of the device, and effectively improves the efficiency and quality of foreign object detection.

[0101] In one embodiment of this application, it further includes:

[0102] The fourth driving component is used to drive multiple rollers 30 to rotate synchronously.

[0103] Specifically, the fourth driving component is a servo motor mounted on the support frame 31. The output shaft of the fourth driving component is connected to a drive sprocket, which is fixed to the end of the output shaft of the fourth driving component by a key connection. One end of each roller 30 is connected to a driven sprocket, which is fixed to the shaft end of the roller 30 by a key connection. The drive sprocket and all the driven sprockets of the rollers 30 are connected by a chain, thereby forming a chain synchronous transmission structure among the multiple rollers 30. When the fourth driving component is powered on, the drive sprocket drives the chain to rotate, causing all the driven sprockets to rotate synchronously, thereby driving all the rollers 30 to rotate synchronously, ensuring that the unpackaged battery pack moves smoothly during transportation without tilting, tipping or slipping.

[0104] By adopting the above technical solution, the fourth driving component drives the chain to drive all rollers 30 to rotate synchronously, which effectively realizes the stable transportation of unpackaged battery packs, significantly improves the smoothness of the transportation process, and further improves the detection efficiency of the foreign object detection device.

[0105] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A foreign object detection device for a power battery pack, characterized in that, include: Clamping components form a clamping space for clamping an unpackaged battery pack within the clamping space; A driving component, connected to the clamping component, drives the clamping component to swing after the clamping component has finished clamping the unpackaged battery pack; and A visual inspection component is used to detect foreign objects inside an unpackaged battery pack, and the visual inspection component remains relatively stationary with respect to the unpackaged battery pack.

2. The foreign object detection device for a power battery pack as described in claim 1, characterized in that, The clamping assembly includes: The first fixed plate has a first rotating shaft on its outer side; A second fixing plate is disposed opposite to the first fixing plate, and a second rotating shaft is provided on the side of the second fixing plate away from the first fixing plate; The first lead screw is rotatably connected between the first fixed plate and the second fixed plate; At least one guide rod is connected between the first fixed plate and the second fixed plate, and the length direction of the guide rod is parallel to the length direction of the first lead screw. The movable clamping plate is threadedly connected to the first lead screw and slidably connected to the guide rod; and The second driving component, with its rotating shaft connected to the first lead screw, drives the first lead screw to rotate, thereby moving the movable clamping plate closer to or away from the second fixed plate, thus clamping or releasing the unencapsulated battery pack.

3. The foreign object detection device for a power battery pack as described in claim 2, characterized in that, A second lead screw is provided between the first fixed plate and the second fixed plate. The length direction of the second lead screw is parallel to the length direction of the first lead screw. The movable clamping plate is threaded to the second lead screw. The first lead screw and the second lead screw rotate synchronously.

4. The foreign object detection device for a power battery pack as described in claim 2, characterized in that, The movable clamping plate is provided with a first clamping crossbeam, and the second fixed plate is provided with a second clamping crossbeam. The first clamping crossbeam can move closer to or further away from the second clamping crossbeam under the action of the movable clamping plate. The first clamping crossbeam and / or the second clamping crossbeam are provided with anti-slip pads.

5. The foreign object detection device for a power battery pack as described in any one of claims 2 to 4, characterized in that, The driving component includes: A first support plate, wherein the first rotating shaft is rotatably connected to the first support plate; A second support plate, wherein the second rotating shaft is rotatably connected to the second support plate; and A first driving component, connected to the first rotating shaft, is used to drive the first rotating shaft to rotate, thereby causing the clamping assembly to swing.

6. The foreign object detection device for a power battery pack as described in claim 2, characterized in that, The visual inspection component includes: The connecting rod has its first end connected to the movable clamping plate; A rotating rod is rotatably connected to the second end of the connecting rod; A support arm, the first end of which is connected to the rotating rod and can rotate with the rotating rod; and A camera, connected to the second end of the support arm, is used to detect foreign objects inside the unencapsulated battery pack.

7. The foreign object detection device for a power battery pack as described in claim 6, characterized in that, The connecting rod is equipped with a third driving component, which drives the rotating rod to rotate, thereby adjusting the position of the camera.

8. The foreign object detection device for a power battery pack as described in claim 6, characterized in that, The camera is equipped with fill lights around its perimeter.

9. The foreign object detection device for a power battery pack as described in claim 1, characterized in that, Also includes: The support frame is located below the clamping components; Multiple rollers, mounted on the support frame, are used to transport unpackaged battery packs to the detection area along a preset path; A lifting base is located below the detection area and between two adjacent rollers. The lifting base is equipped with a lifting cylinder for lifting the unpackaged battery pack in the detection area to the clamping space.

10. The foreign object detection device for a power battery pack as described in claim 9, characterized in that, Also includes: The fourth driving component is used to drive multiple rollers to rotate synchronously.

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