An appearance detection device of a lithium ion battery

Abstract

The utility model provides a kind of appearance detection device of lithium ion battery, it is related to lithium battery detection technical field, including support, working platform being located at the top of support, the conveyor belt for conveying battery, telescopic plate, push plate, qualified product storage box and unqualified product storage box, by setting telescopic plate of sliding embedding in the groove of detection port side wall, the gap width between its and the opposite side wall of detection port is adjusted using the sliding of telescopic plate, without disassembling replacement detection port component can be adapted to the cylindrical lithium ion battery of different diameter, compared with existing detection port, effectively solve the problem that long downtime is caused when the operation of model change is complicated, improve production switching efficiency, by the gap adjusting structure between single telescopic plate fixation and side wall, only one set of driving and guiding assembly can realize gap adjustment, without like existing double telescopic plate scheme setting two sets of independent driving structure, simplify the structure of equipment, reduce installation debugging difficulty and manufacturing cost.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery testing technology, and in particular to a device for inspecting the appearance of lithium-ion batteries. Background Technology

[0002] Lithium-ion batteries, as core energy storage components in the new energy field, are widely used in new energy vehicles, portable electronic devices, energy storage systems, and other scenarios. Their product quality directly determines the performance and safety of terminal devices. In the production process of cylindrical lithium-ion batteries, appearance defect detection is a key quality control link. Defects such as battery casing expansion and diameter deviation can lead to difficulties in battery assembly, degradation of charge and discharge performance, and even thermal runaway risk in severe cases. Therefore, it is necessary to accurately screen the battery diameter and eliminate unqualified products.

[0003] Currently, the industry's main method for detecting the diameter of cylindrical lithium-ion batteries is to use industrial cameras to capture battery images and combine them with algorithms to analyze the battery diameter and mechanical inspection ports. While camera image acquisition automates the process, the equipment is expensive and has stringent requirements for the inspection environment. The algorithm debugging is also complex, making it difficult for small and medium-sized production enterprises to afford. At the same time, vision systems are sensitive to interference such as dirt and reflections on the battery surface, which can easily lead to misjudgments. Additional cleaning and light-shielding structures are required, further increasing the complexity of the equipment. Mechanical inspection ports are mostly fixed-size structures that can only adapt to a single battery model. When switching battery models, the entire inspection port component must be disassembled and replaced, which is cumbersome, causes long downtime, and affects production efficiency. Although some systems use double telescopic plates to symmetrically adjust the gap, they require two independent drive and guide structures, which are difficult to install and debug. Furthermore, the synchronization of the two plates is difficult to guarantee, and battery jamming can easily occur due to gap misalignment.

[0004] Therefore, it is necessary to provide a new appearance inspection device for lithium-ion batteries to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides an appearance inspection device for lithium-ion batteries.

[0006] This utility model provides a lithium-ion battery appearance inspection device, comprising: a bracket, a working platform disposed on the top of the bracket, and a conveyor belt for transporting batteries. A detection port is provided on one side of the working platform, and a groove is provided on one side wall of the detection port. A telescopic plate is slidably embedded in the groove, and the extended end of the telescopic plate faces the opposite side wall of the detection port. A pusher plate for pushing batteries into the detection port is provided between the conveyor belt and the detection port. A qualified product storage box is provided directly below the detection port, and a defective product storage box is provided on the side of the detection port away from the telescopic plate.

[0007] Preferably, the groove is provided with a sliding assembly for driving the telescopic plate to slide. The sliding assembly includes a rack, a gear, a connecting shaft, and a fixing frame. The rack extends along the length of the groove, and the top of the rack is fixedly connected to the bottom of the telescopic plate. The gear meshes with the rack, and the gear is rotatably connected to the fixing frame through the connecting shaft. The top of the fixing frame is fixedly connected to the bottom of the working platform.

[0008] Preferably, a motor is provided on one side of the working platform, and the output shaft of the motor passes through the outer wall of the working platform and is fixedly connected to one end of the connecting shaft.

[0009] Preferably, slide rails are embedded on both sides of the inner wall of the groove, and sliders are provided at corresponding positions on both sides of the telescopic plate, with the inner wall of the sliders slidably connected to the slide rails.

[0010] Preferably, the push plate has an H-shaped cross-section, one end of the push plate has a groove, a connecting rod is provided in the groove, one end of the connecting rod is slidably connected to the groove, and the other end of the connecting rod is provided with a second motor, the output shaft of the second motor passes through the bracket and is fixedly connected to the other end of the connecting rod.

[0011] Preferably, an inclined guide plate is provided on the side of the detection port away from the telescopic plate. One end of the guide plate is fixedly connected to the end of the detection port away from the telescopic plate, and the other end of the guide plate extends downward at an incline to one side of the defective product storage box.

[0012] Compared with related technologies, the appearance inspection device for lithium-ion batteries provided by this utility model has the following advantages: This invention features a telescopic plate that is slidably embedded in a groove on the side wall of the detection port. The width of the gap between the telescopic plate and the opposite side wall of the detection port can be adjusted by sliding the telescopic plate. This allows it to adapt to cylindrical lithium-ion batteries of different diameters without disassembling or replacing the detection port components. Compared with existing mechanical detection ports of fixed size, this invention effectively solves the problem of cumbersome operation and long downtime when switching battery models, and significantly improves production switching efficiency.

[0013] This utility model adopts a gap adjustment structure between a single telescopic plate and the side wall. Only one set of drive and guide components is needed to achieve gap adjustment. Unlike the existing double telescopic plate solution, which requires two independent drive structures, this greatly simplifies the overall structure of the equipment, reduces the difficulty of installation and debugging, and lowers manufacturing costs. At the same time, compared with visual inspection devices that rely on industrial cameras and complex algorithms, this solution is mainly based on a pure mechanical structure, which is lower in cost, more convenient to maintain, and more suitable for the actual needs of small and medium-sized production enterprises. Attached Figure Description

[0014] Figure 1 A schematic diagram of a preferred embodiment of a lithium-ion battery appearance inspection device provided by this utility model; Figure 2 for Figure 1 The sectional view shown is a structural schematic diagram; Figure 3 for Figure 1 The diagram shows the structure of the telescopic plate. Figure 4 for Figure 1 The diagram shows a top view of the detection device.

[0015] The following are the labels in the diagram: 1. Support; 2. Working platform; 3. Conveyor belt; 4. Inspection port; 5. Groove; 6. Telescopic plate; 7. Push plate; 8. Qualified product storage box; 9. Unqualified product storage box; 10. Gear; 11. Rack; 12. Connecting shaft; 13. Fixing frame; 14. Motor 1; 15. Slide rail; 16. Slider; 17. Slide groove; 18. Connecting rod; 19. Motor 2; 20. Guide plate. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Please refer to the following: Figure 1 , Figure 2 , Figure 3 , Figure 4 ,in, Figure 1 A schematic diagram of a preferred embodiment of a lithium-ion battery appearance inspection device provided by this utility model; Figure 2 for Figure 1 The sectional view shown is a structural schematic diagram; Figure 3 for Figure 1 The diagram shows the structure of the telescopic plate. Figure 4 for Figure 1 The diagram shows a top view of the detection device.

[0018] In the specific implementation process, such as Figures 1-4 As shown, a lithium-ion battery appearance inspection device mainly includes a support 1, a working platform 2 located on top of the support 1, a conveyor belt 3 for transporting batteries, a telescopic plate 6, a push plate 7, a qualified product storage box 8, and a defective product storage box 9. The working platform 2 is horizontally located on top of the support 1, providing stable support for the entire inspection device. The conveyor belt 3 is located on one side of the working platform 2 and is used to transport the lithium-ion batteries to be inspected to designated positions in sequence.

[0019] A detection port 4 is provided on one side of the working platform 2. A groove 5 is provided on one side wall of the detection port 4. A telescopic plate 6 is slidably embedded in the groove 5, with the extended end of the telescopic plate 6 facing the opposite side wall of the detection port 4. In this way, a detection space for placing the battery to be tested is formed between the telescopic plate 6 and the inner wall of the opposite detection port 4. By adjusting the position of the telescopic plate 6, the size of the detection space can be changed to accommodate lithium-ion batteries of different diameters. To achieve the sliding adjustment of the telescopic plate 6, a sliding assembly is provided in the groove 5. The sliding assembly includes a rack 11, a gear 10, a connecting shaft 12, and a fixing frame 13. The rack 11 extends along the length of the groove 5, and its top is fixedly connected to the bottom of the telescopic plate 6. The gear 10 meshes with the rack 11 and is connected to the fixing frame 13 via the connecting shaft 12. 3. Rotary connection: The top of the fixed frame 13 is fixedly connected to the bottom of the working platform 2. A motor 14 is provided on one side of the working platform 2. The output shaft of the motor 14 passes through the outer wall of the working platform 2 and is fixedly connected to one end of the connecting shaft 12. When the motor 14 starts, the output shaft drives the connecting shaft 12 to rotate, which in turn causes the gear 10 to rotate. Since the gear 10 meshes with the rack 11, the rotation of the gear 10 will drive the rack 11 to move along the length direction of the groove 5, thereby realizing the sliding of the telescopic plate 6. In addition, in order to ensure the stability of the sliding of the telescopic plate 6, slide rails 15 are embedded on both sides of the inner wall of the groove 5. Slider 16 is provided at the corresponding positions on both sides of the telescopic plate 6. The inner wall of the slider 16 is slidably connected to the slide rail 15. In this way, the telescopic plate 6 can move smoothly along the slide rail 15 during the sliding process, reducing shaking and deviation.

[0020] A push plate 7 is provided between the conveyor belt 3 and the detection port 4 to push the battery into the detection port 4. The push plate 7 has an H-shaped cross-section, which increases the contact area between the push plate 7 and the battery and improves the stability of the push. One end of the push plate 7 has a groove 17, and a connecting rod 18 is provided in the groove 17. One end of the connecting rod 18 is slidably connected to the groove 17, and the other end of the push plate 7 contacts the battery to push it. The contact surface between the push plate 7 and the battery is also provided with a buffer pad to prevent the battery from being scratched during the push. The other end of the connecting rod 18 is provided with a second motor 19. The output shaft of the second motor 19 passes through the bracket 1 and is fixedly connected to the other end of the connecting rod 18. When the second motor 19 is started, the output shaft of the second motor 19 drives the connecting rod 18 to make a circular motion. The sliding of the connecting rod 18 in the groove 17 allows the push plate 7 to make a linear reciprocating motion. When the push plate 7 moves forward, it pushes the battery on the conveyor belt 3 into the detection port 4; when the push plate 7 moves backward, it returns to the initial position and waits for the next push.

[0021] A qualified product storage box 8 is located directly below the inspection port 4 to store lithium-ion batteries that have passed the appearance inspection. A defective product storage box 9 is located on the side of the inspection port 4 away from the telescopic plate 6. In order to facilitate the smooth entry of defective batteries into the defective product storage box 9, an inclined guide plate 20 is provided on the side of the inspection port 4 away from the telescopic plate 6. One end of the guide plate 20 is fixedly connected to the end of the inspection port 4 away from the telescopic plate 6, and the other end extends downward at an incline to one side of the defective product storage box 9.

[0022] The working principle provided by this utility model is as follows: In actual operation, the lithium-ion batteries to be tested are sequentially transported to the position near the testing port 4 via conveyor belt 3. At this time, pusher plate 7 moves forward under the drive of motor 19, pushing the battery into testing port 4. After the battery enters testing port 4, the testing space will detect whether the cylindrical battery has expanded. If the battery has not expanded, it is a qualified battery and will fall into the qualified product collection box 8 directly below through testing port 4. If the battery has expanded, the size or shape of the unqualified battery may cause it to get stuck at testing port 4. When the next battery is pushed into testing port 4 by pusher plate 7, it will lift up the stuck unqualified battery and slide it into the unqualified product collection box 9 along the inclined guide plate 20. By continuously repeating the above process, continuous automated detection and classification of the appearance of lithium-ion batteries can be achieved.

[0023] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0024] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A lithium-ion battery appearance inspection device, comprising a support (1), a working platform (2) disposed on top of the support (1), and a conveyor belt (3) for transporting batteries, characterized in that, The working platform (2) has a detection port (4) on one side. A groove (5) is provided on one side wall of the detection port (4). A telescopic plate (6) is slidably embedded in the groove (5). The extended end of the telescopic plate (6) faces the opposite side wall of the detection port (4). A push plate (7) for pushing batteries into the detection port (4) is provided between the conveyor belt (3) and the detection port (4). A qualified product storage box (8) is provided directly below the detection port (4). A defective product storage box (9) is provided on the side of the detection port (4) away from the telescopic plate (6).

2. The appearance inspection device for lithium-ion batteries according to claim 1, characterized in that, The groove (5) is provided with a sliding assembly for driving the telescopic plate (6) to slide. The sliding assembly includes a rack (11), a gear (10), a connecting shaft (12), and a fixing frame (13). The rack (11) extends along the length direction of the groove (5). The top of the rack (11) is fixedly connected to the bottom of the telescopic plate (6). The gear (10) meshes with the rack (11). The gear (10) is rotatably connected to the fixing frame (13) through the connecting shaft (12). The top of the fixing frame (13) is fixedly connected to the bottom of the working platform (2).

3. The appearance inspection device for lithium-ion batteries according to claim 2, characterized in that, The working platform (2) is provided with a motor (14) on one side. The output shaft of the motor (14) passes through the outer wall of the working platform (2) and is fixedly connected to one end of the connecting shaft (12).

4. The appearance inspection device for lithium-ion batteries according to claim 2, characterized in that, The inner walls of the groove (5) are fitted with slide rails (15) on both sides, and the telescopic plate (6) is provided with sliders (16) at corresponding positions on both sides. The inner walls of the sliders (16) are slidably connected to the slide rails (15).

5. The appearance inspection device for lithium-ion batteries according to claim 1, characterized in that, The push plate (7) has an H-shaped cross section. One end of the push plate (7) is provided with a groove (17). A connecting rod (18) is provided in the groove (17). One end of the connecting rod (18) is slidably connected to the groove (17). The other end of the connecting rod (18) is provided with a second motor (19). The output shaft of the second motor (19) passes through the bracket (1) and is fixedly connected to the other end of the connecting rod (18).

6. The appearance inspection device for lithium-ion batteries according to claim 1, characterized in that, An inclined guide plate (20) is provided on the side of the detection port (4) away from the telescopic plate (6). One end of the guide plate (20) is fixedly connected to the end of the detection port (4) away from the telescopic plate (6), and the other end of the guide plate (20) extends downwards to one side of the non-conforming product storage box (9).

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