Cylindrical battery online detection positioning tool
Patent Information
- Application Number
- CN202521915505.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-05
- Publication Date
- 2026-08-18
- Estimated Expiration
- 2035-09-05
AI Technical Summary
[0004]3、封装工艺缺陷筛查
[0014]The beneficial effects of this utility model are as follows: The wedge-shaped design of the blocking punch and the carrier base connection block allows for a perfect fit. A buffer spring is provided at the root of the blocking punch to reduce rigid impacts and improve service life. This cylindrical battery online inspection and positioning fixture adopts a wedge-shaped self-locking + buffer spring design to achieve high-precision, gapless positioning. It also features impact resistance, long lifespan, and fast response, perfectly meeting the needs of precision workstations such as X-ray inspection.
Smart Images
Figure CN224643380U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of on-line detection and automatic assembly of lithium-ion cylindrical batteries, and specifically relates to a positioning tool for on-line detection of cylindrical batteries. Background Technique
[0002] With the increasing requirements for the safety and reliability of cylindrical lithium-ion batteries in new energy vehicles, energy storage systems and high-end electronic devices, on-line XRay non-destructive testing has become an essential quality control link in the production line. Compared with traditional appearance inspection and electrical performance testing, XRay technology can penetrate the metal shell and directly obtain the internal structure information of the battery core, realizing high-sensitivity identification of hidden defects. Its main core requirements include: 1. Precise identification of internal defects XRay imaging can detect micron-level features such as the alignment of electrode sheets, diaphragm wrinkles and interlayer gaps in the winding core. In the winding process, if the interlayer gap of the electrode sheet is less than 50μm, there is a risk of internal short circuit; non-destructive XRay can capture such subtle deviations and avoid the blind spots of manual visual inspection or acoustic flaw detection.
[0003] 2. Quantitative evaluation of welding quality For the laser welding area between the tab and the shell, XRay gray-scale comparison can analyze the penetration depth, porosity and microcrack distribution of the solder joints. For example, in the 4680 battery with the "tabless" design, the integrity of the solder joints directly affects the consistency of the battery internal resistance and the thermal management effect, and XRay detection can achieve digital evaluation of the welding quality.
[0004] 3. Screening of packaging process defects After injection and capping, XRay can be used to evaluate the electrolyte infiltration uniformity, residual air bubbles in the shell and foreign object interference. For a high-speed production line with 60PPM per minute, real-time on-line XRay detection can intercept micron-level leaks or bubbles in time to prevent subsequent cyclic performance degradation.
[0005] 4. Full-process quality traceability Combined with AI image processing and MES system, on-line detection data can generate a "structural fingerprint" file for each battery, realizing batch traceability and abnormal warning, and helping to optimize the manufacturing process in a closed loop.
[0006] Currently, the existing technologies mainly have the following deficiencies: Although on-line XRay detection plays an important role in quality control, the existing positioning tools have the following deficiencies, seriously restricting the detection accuracy and production line efficiency: Low positioning accuracy: Traditional tray-type or V-groove-type fixtures mostly rely on single-point contact positioning, and it is difficult to achieve micron-level constraints in both the radial and axial directions, resulting in XRay image distortion or overlapping artifacts, increasing the misjudgment rate.
[0007] Type changeover and adaptation time: When dealing with various specifications of battery cells such as 18650, 21700, and 4680, it is often necessary to manually replace the base plate or adjust the support block, which not only increases downtime but also easily causes positioning errors due to improper operation.
[0008] Mismatch with inspection cycle time: Existing tooling has lengthy movements in material feeding, unloading, alignment and calibration, which cannot adapt to the second-level cycle time, causing inspection to become a bottleneck in the production line and affecting overall capacity.
[0009] Based on the aforementioned technical pain points, there is an urgent need for an online inspection and positioning fixture that can enable rapid replacement of multiple battery cell specifications and provide three-dimensional rigid constraints under high-frequency conditions, so as to ensure the high accuracy and high reliability of XRay imaging and improve the automated inspection capacity. Utility Model Content
[0010] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a cylindrical battery online inspection and positioning fixture. This fixture adopts a wedge-shaped self-locking + buffer spring design to achieve high-precision gapless positioning, and also features impact resistance, long life and fast response, perfectly adapting to the needs of precision workstations such as X-RAY inspection.
[0011] To achieve the above objectives, this utility model provides the following technical solution: a cylindrical battery online detection and positioning fixture, comprising a U-shaped bracket, a slide rail fixing plate at the top of the U-shaped bracket, a slide rail on the slide rail fixing plate, the slide rail cooperating with a blocking punch fixing plate, a plurality of mounting blocks on the blocking punch fixing plate, a stop block on the mounting block, a wedge-shaped blocking positioning punch between the stop blocks, the wedge-shaped blocking positioning punch being limited between the stop blocks by a pressure block, and cooperating with a carrier; a linear cylinder is fixed on one side of the top of the U-shaped bracket by a cylinder fixing block and a connecting block, the cylinder rod of the linear cylinder cooperating with the blocking punch fixing plate.
[0012] Preferably, the tail end of the wedge-shaped blocking positioning punch is connected to the mounting block via a buffer spring.
[0013] Preferably, the vehicle is provided with a vehicle base connecting plate, and a wedge-shaped vehicle base connecting block is provided on the vehicle base connecting plate, the wedge-shaped vehicle base connecting block cooperating with a wedge-shaped blocking positioning punch.
[0014] The beneficial effects of this utility model are as follows: The wedge-shaped design of the blocking punch and the carrier base connection block allows for a perfect fit. A buffer spring is provided at the root of the blocking punch to reduce rigid impacts and improve service life. This cylindrical battery online inspection and positioning fixture adopts a wedge-shaped self-locking + buffer spring design to achieve high-precision, gapless positioning. It also features impact resistance, long lifespan, and fast response, perfectly meeting the needs of precision workstations such as X-ray inspection. 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. 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 The specific embodiment adopts the following technical solution: a cylindrical battery line detection and positioning fixture, including a U-shaped bracket 1, a slide rail fixing plate 2 is provided on the top of the U-shaped bracket 1, a slide rail is provided on the slide rail fixing plate 2, the slide rail cooperates with the blocking punch fixing plate 3, a plurality of mounting blocks 4 are provided on the mounting blocks 4, a stop block 5 is provided on the mounting blocks 4, a wedge-shaped blocking positioning punch 6 is provided between the stop blocks 5, the wedge-shaped blocking positioning punch 6 is limited between the stop blocks 5 by a pressure block 7, and the wedge-shaped blocking positioning punch 6 cooperates with a carrier 8; a linear cylinder 11 is fixed on one side of the top of the U-shaped bracket 1 by a cylinder fixing block 9 and a connecting block 10, and the cylinder rod of the linear cylinder 11 cooperates with the blocking punch fixing plate 3.
[0018] It is worth noting that the tail of the wedge-shaped blocking positioning punch 6 is connected to the mounting block 4 via a buffer spring 12.
[0019] In addition, the carrier 8 is provided with a carrier base connecting plate 81, and a wedge-shaped carrier base connecting block is provided on the carrier base connecting plate 81. The wedge-shaped carrier base connecting block cooperates with the wedge-shaped blocking positioning punch 6.
[0020] The working principle of this specific implementation is as follows: The carrier 8 (including the wedge-shaped carrier base connecting block) is moved to the X-RAY inspection station by the conveyor line. The linear cylinder 11 is activated, pushing the blocking punch fixing plate 3 to slide along the slide rail, causing the wedge-shaped blocking positioning punch 6 to extend. The wedge-shaped blocking positioning punch 6 engages with the inclined surface of the wedge-shaped base connecting block of the carrier 8. Utilizing the self-locking characteristic of the wedge structure, the carrier is positioned without gaps, ensuring that the battery position is fixed during inspection. The buffer spring 12 absorbs the contact impact between the punch and the carrier, reducing rigid collision noise and wear. After the X-RAY inspection is completed, the linear cylinder 11 retracts, driving the blocking punch fixing plate 3 to reset, the wedge-shaped blocking positioning punch 6 disengages from the carrier, and the carrier continues to be conveyed to the next station.
[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 cylindrical battery online detection positioning tool, characterized in that, The system includes a U-shaped bracket (1), a slide rail fixing plate (2) on the top of the U-shaped bracket (1), a slide rail on the slide rail fixing plate (2), the slide rail cooperating with a blocking punch fixing plate (3), a plurality of mounting blocks (4) on the blocking punch fixing plate (3), a stop block (5) on the mounting block (4), a wedge-shaped blocking positioning punch (6) between the stop blocks (5), the wedge-shaped blocking positioning punch (6) being limited between the stop blocks (5) by a pressure block (7), and the wedge-shaped blocking positioning punch (6) cooperating with a carrier (8); a linear cylinder (11) is fixed on one side of the top of the U-shaped bracket (1) by a cylinder fixing block (9) and a connecting block (10), and the cylinder rod of the linear cylinder (11) cooperating with the blocking punch fixing plate (3).
2. The cylindrical battery online detection positioning tool according to claim 1, wherein, The tail of the wedge-shaped blocking positioning punch (6) is connected to the mounting block (4) via a buffer spring (12).
3. The cylindrical battery online detection positioning tool of claim 1, wherein, The vehicle (8) is provided with a vehicle base connecting plate (81), and a wedge-shaped vehicle base connecting block is provided on the vehicle base connecting plate (81). The wedge-shaped vehicle base connecting block cooperates with the wedge-shaped blocking positioning punch (6).