High-precision cylindrical battery sorting mechanism
Patent Information
- Application Number
- CN202521883818.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-02
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-09-02
AI Technical Summary
Existing technologies for lithium-ion battery sorting suffer from problems such as incomplete detection, inaccurate sorting, secondary damage to batteries, difficulty in meeting the fine sorting requirements under high-speed and high-capacity conditions, and inability to provide sufficient process closed-loop feedback data support.
The high-precision cylindrical battery sorting mechanism adopts dual linear guide rails and precision drive of a geared motor. Through the cooperation of guide grooves, slide rails and mechanical grippers, it achieves high-precision and high-efficiency battery sorting, and is also modular and low-maintenance.
It achieves high-precision battery sorting, reduces secondary damage, improves sorting efficiency and grading accuracy, provides process closed-loop feedback data support, and is suitable for sorting needs of batteries of different specifications.
Smart Images
Figure CN224926524U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lithium-ion battery production and automated sorting, specifically to a high-precision cylindrical battery sorting mechanism. Background Technology
[0002] With the rapid increase in demand for high-energy-density, long-life lithium-ion cylindrical batteries from new energy vehicles, energy storage systems, and portable electronic devices, battery manufacturers are not only increasing production capacity but also placing higher demands on battery consistency, safety, and resource utilization efficiency. Cylindrical battery sorting, as a key link in the closed-loop battery manufacturing process, primarily aims to: 1. Screening consistency By online monitoring of battery electrical performance indicators such as voltage, internal resistance, and capacity, cells that deviate from technical standards (overvoltage, undervoltage, high internal resistance, low capacity, etc.) are eliminated, ensuring uniform performance of cells within the same battery pack and preventing potential hazards such as charge-discharge imbalance, shortened lifespan, and thermal runaway caused by excessive differences in electrical performance.
[0003] 2. Defect interception During the manufacturing process, hidden defects such as poor winding, insufficient electrolyte injection, electrode misalignment, micro-short circuits, and electrolyte leakage can seriously affect the safety and reliability of batteries. Existing manual or traditional mechanical sorting methods often fail to detect these minute defects in a timely and comprehensive manner, causing defective cells to flow into the module assembly stage, increasing subsequent rework or scrap costs, and posing potential risks to the safety of end-use.
[0004] 3. Hierarchical application Different application scenarios have different requirements for battery performance grading. Power batteries need to be strictly graded to ensure the range and safety of the entire vehicle; while stationary energy storage scenarios have relatively relaxed requirements for the uniformity of capacity distribution. By finely grading qualified batteries according to performance parameters (such as capacity range and internal resistance range), high-performance batteries can be concentrated in the power system, and secondary batteries can be used in the energy storage system, which can significantly improve resource utilization efficiency and economic benefits.
[0005] 4. Process closed-loop feedback The large amount of data generated during the sorting process (including dimensions, weight, electrical property distribution, etc.) is an important basis for monitoring the process stability of upstream processes (winding, liquid injection, packaging, etc.). Through statistical analysis of sorting data, process fluctuations can be detected in a timely manner, and feedback information can be transmitted to the upstream equipment control system to achieve online optimization and closed-loop quality control of the production process.
[0006] The existing technology has the following shortcomings: Currently, the industry primarily uses the following sorting methods: Manual sorting is labor-intensive, inefficient, and easily affected by the operator's experience and condition, making it difficult to guarantee screening accuracy and consistency.
[0007] Vision + robotic arm sorting: The camera detects external defects and then the robotic arm picks them up. However, the detection of internal electrical performance parameters (such as internal resistance and capacity) still requires offline testing. In addition, the vision system has a low recognition rate for hidden defects (micro short circuits and leakage).
[0008] Drop-through online inspection: Batteries slide down the production line channel to the inspection table, and are sorted by electromagnetic or pneumatic means after testing. However, due to gravity and compression, the battery surface may be slightly bumped. At the same time, it is difficult to balance inspection accuracy and speed, which leads to a bottleneck in the production line.
[0009] The above methods have many drawbacks: incomplete detection, inaccurate sorting, secondary damage to batteries, difficulty in meeting the fine sorting requirements under high-speed and high-volume production, and inability to provide sufficient process closed-loop feedback data support. Utility Model Content
[0010] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a high-precision cylindrical battery sorting mechanism. It adopts a dual linear slide rail guide and a geared motor for precision drive, achieving high-precision and high-efficiency sorting of cylindrical batteries, while also possessing the advantages of modularity, low maintenance, and compact layout.
[0011] To achieve the above objectives, this utility model is implemented through the following technical solution: a high-precision cylindrical battery sorting mechanism, including a support frame, a rib plate provided on the inner side of the support frame, a fixed plate provided on the upper side of the support frame, a guide plate provided on the fixed plate, a guide groove provided on the guide plate, the guide groove cooperating with a guide movable column, the guide movable column being connected to a first slider, the first slider cooperating with a vertical linear slide rail, the vertical linear slide rail cooperating with a horizontal linear slide rail through a second slider, the horizontal linear slide rail being located at the upper and lower edges of the fixed plate, and the first slider also being connected to a mechanical gripper through a connecting block.
[0012] Preferably, the guide column is connected to a reduction motor, which is mounted on a reduction motor mounting base, which is located on the back of the fixed plate.
[0013] Preferably, a limit sensor is provided on the fixing plate at the rear end of the guide column.
[0014] The beneficial effects of this utility model are as follows: The structure of this utility model is reasonably designed. Driven by a geared motor, the mechanical gripper and its connected linear slide rail reciprocate within the guide groove to complete the battery sorting process. The dual linear slide rails (vertical + horizontal) combined with the geared motor drive achieve a repeatability accuracy of ±0.05mm, suitable for small-sized batteries (e.g., diameter less than 5mm). The guide groove, slide rails, and grippers all adopt a detachable structure, facilitating adaptation to the sorting needs of batteries of different specifications. The geared motor provides stable power output, and the limit sensors provide dual protection, suitable for long-term continuous operation (e.g., 24-hour production lines). The horizontal slide rail is positioned at the edge of the fixed plate, while the vertical slide rail is centrally located, resulting in a compact structure and saving equipment floor space. The linear slide rails and sliders are standardized parts, making replacement convenient after wear and reducing maintenance costs compared to customized mechanisms. Attached Figure Description
[0015] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments; Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 A diagram of the back side. Detailed Implementation
[0016] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0017] Reference Figure 1-2 The specific embodiment adopts the following technical solution: a high-precision cylindrical battery sorting mechanism, including a support frame 1, a rib plate 2 provided on the inner side of the support frame 1, a fixed plate 3 provided on the upper side of the support frame 1, a guide plate 4 provided on the fixed plate 3, a guide groove provided on the guide plate 4, the guide groove cooperating with the guide movable column 5, the guide movable column 5 connected to the first slider 6, the first slider 6 cooperating with the vertical linear slide rail 7, the vertical linear slide rail 7 cooperating with the horizontal linear slide rail 9 through the second slider 8, the horizontal linear slide rail 9 being located at the upper and lower edges of the fixed plate 3, and the first slider 6 also connected to the mechanical gripper 11 through the connecting block 10.
[0018] The guide column 5 is connected to the reduction motor 12, which is mounted on the reduction motor mounting base 13. The reduction motor mounting base 13 is located on the back of the fixing plate 3.
[0019] A limit sensor 14 is provided on the fixing plate at the rear end of the guide column 5.
[0020] The working principle of this specific embodiment is as follows: The geared motor 12 drives the guide column 5 to reciprocate within the guide groove, which in turn drives the mechanical gripper 11 to move up and down along the vertical linear slide rail 7 via the first slider 6. The second slider 8 cooperates with the horizontal linear slide rail 9 to achieve lateral displacement of the gripper, forming a two-dimensional planar motion trajectory that accurately covers the sorting area. According to the program settings, the mechanical gripper 11 moves to the target battery position, picks up the cylindrical battery, and then transfers it to the designated workstation (such as the inspection station or packaging area). The limit sensor 14 detects the end point of the guide column 5's stroke in real time to ensure that the range of motion is controllable and to avoid damage from overtravel. The guide groove of the guide plate 4 constrains the motion path, and the stiffening rib 2 enhances the rigidity of the support frame 1, reducing the impact of vibration on sorting accuracy.
[0021] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A high-precision cylindrical battery sorting mechanism, characterized in that, It includes a support frame (1), a stiffener plate (2) is provided on the inner side of the support frame (1), a fixed plate (3) is provided on the upper side of the support frame (1), a guide plate (4) is provided on the fixed plate (3), a guide groove is provided on the guide plate (4), the guide groove cooperates with the guide movable column (5), the guide movable column (5) is connected to the first slider (6), the first slider (6) cooperates with the vertical linear slide rail (7), the vertical linear slide rail (7) cooperates with the horizontal linear slide rail (9) through the second slider (8), the horizontal linear slide rail (9) is set at the upper and lower edges of the fixed plate (3), and the first slider (6) is also connected to the mechanical gripper (11) through the connecting block (10).
2. The high-precision cylindrical battery sorting mechanism according to claim 1, characterized in that, The guide column (5) is connected to the geared motor (12), which is mounted on the geared motor mounting base (13). The geared motor mounting base (13) is located on the back of the fixed plate (3).
3. The high-precision cylindrical battery sorting mechanism according to claim 1, characterized in that, A limit sensor (14) is provided on the fixing plate at the rear end of the guide movable column (5).