A lithium battery detection device with clamping positioning structure
By combining positioning and replacement components, the problem of insufficient adaptability of traditional lithium battery testing devices is solved, enabling high-precision and rapid adaptive clamping of lithium batteries of different specifications, thus improving testing efficiency and adaptability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN ZHONGLI LITHIUM ENERGY TECH CO LTD
- Filing Date
- 2025-09-19
- Publication Date
- 2026-06-26
AI Technical Summary
Traditional lithium battery testing devices are mostly designed with fixed positioning structures, which cannot adapt to different battery specifications, resulting in low testing efficiency and making it difficult to meet the needs of laboratory R&D testing of multiple models and production line flexible production of multiple batches.
The structure adopts a positioning and replacement component design. Through the combination of motor, lead screw, slider, connecting plate and other components, it can clamp and position lithium batteries of different sizes. The height can be adjusted by the cooperation of cylinder, push plate and upright plate. Combined with micro airbag and pressure sensor, it can achieve adaptive clamping and quick replacement of positioning clamp.
It achieves high-precision and rapid adaptive clamping of lithium batteries of different sizes and shapes, improving testing efficiency and adaptability, and meeting the needs of small-batch, multi-model testing in laboratories and large-scale automated testing in production lines.
Smart Images
Figure CN224416131U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of battery testing equipment technology, specifically a lithium battery testing device with a clamping and positioning structure. Background Technology
[0002] Lithium-ion batteries, as the mainstream energy carrier, have been deeply integrated into daily life, appearing everywhere from smartphones and laptops to new energy vehicles and smart home devices. To adapt to the working needs and structural designs of different electrical appliances, lithium-ion batteries have become increasingly diverse in form—from cylindrical cells to prismatic hard-shell batteries to flexible and bendable pouch batteries, with sizes ranging from micro-batteries a few millimeters to energy storage battery packs tens of centimeters, showing significant differences in shape.
[0003] Throughout the entire lifecycle of lithium batteries, from performance testing in the R&D stage to quality inspection in the production process, and then to condition assessment during use, testing equipment is the core equipment to ensure their safety and reliability. Precise clamping and positioning are the prerequisites for realizing various tests (such as electrical performance, safety, and appearance defect detection) – only by stably fixing the battery can we ensure consistent contact resistance of voltage probes, accurate puncture test force, and clear focus of visual inspection.
[0004] However, traditional lithium battery testing devices typically employ fixed positioning structures: clamping components customized for specific battery models can only accommodate products of a single size or shape. When testing batteries of different specifications, the entire positioning fixture must be replaced, which is not only cumbersome but also carries the risk of positioning benchmark deviation, severely limiting testing efficiency. In particular, it is difficult to meet the needs of multi-model R&D testing in laboratories and flexible multi-batch production on production lines. Therefore, we propose a lithium battery testing device with a clamping and positioning structure. Utility Model Content
[0005] The purpose of this invention is to provide a lithium battery testing device with a clamping and positioning structure, which solves the problem of low adaptability in the existing lithium battery testing process by structurally cooperating with positioning components and replacement components.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A lithium battery testing device with a clamping and positioning structure includes a base plate and a positioning clamping plate, and further includes: a support leg installed at the bottom of the base plate, a vertical plate installed on the base plate, a top plate installed on the top of the vertical plate, a cylinder installed at the bottom of the base plate, a push plate fixedly connected to the output end of the cylinder through the base plate, the push plate being slidably connected to the vertical plate; a positioning component installed on the push plate, the positioning component being used for positioning and clamping the lithium battery; and a replacement component installed on the positioning component, the replacement component being used for replacing the positioning clamping plate.
[0008] Preferably, the positioning component includes a mounting frame mounted on a push plate, a motor mounted on the outside of the mounting frame, a lead screw fixedly connected to the output end of the motor via a coupling, and the other end of the lead screw rotatably connected to the inner wall of the mounting frame.
[0009] Preferably, the lead screw is symmetrically threaded with sliders on its exterior, both sliders are slidably connected to the inner wall of the mounting frame, and both sliders are fixedly connected to connecting blocks through the mounting frame on their exteriors, with connecting plates fixedly connected to both connecting blocks.
[0010] Preferably, the replacement component includes an electric push rod mounted on the two connecting plates, the output ends of the two electric push rods are fixedly connected to guide plates, the exterior of the two guide plates are fixedly connected to slide plates, and the two slide plates are slidably connected to a fixing frame, the fixing frame being fixedly connected to the connecting plates.
[0011] Preferably, both of the fixed frames are slidably connected to a right clamping arm, and both right clamping arms are equipped with a limit pin.
[0012] Preferably, a left clamping arm is slidably connected above each of the two right clamping arms, and both left clamping arms are slidably connected to the fixed frame.
[0013] Preferably, the two left clamping arms are provided with limiting grooves, and the two limiting pins pass through the limiting grooves and are fixedly connected to the slide plate.
[0014] Preferably, the right and left clamping arms are used to clamp, position, and replace the positioning clamp, and a micro airbag is installed on the positioning clamp, and a pressure sensor is installed on the micro airbag.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] 1. This device achieves "wide adaptability, high precision, and fast response" testing requirements through mechanical structure optimization and sensing technology integration. It is suitable for small-batch, multi-model R&D testing in laboratories, as well as large-scale automated testing scenarios on production lines, providing reliable hardware support for lithium battery quality control.
[0017] 2. This utility model includes a positioning component, which, through the cooperation of a motor, lead screw, slider, connecting block, and connecting plate, facilitates the adaptation to lithium batteries of different sizes and enables the clamping and positioning of lithium batteries of varying sizes. Furthermore, through the cooperation of a cylinder, push plate, and upright plate, the height of the positioning component can be adjusted, thereby improving the adaptability of the lithium battery testing device and further enhancing the efficiency of lithium battery testing.
[0018] 3. This utility model is equipped with a replacement component, which allows for quick replacement of the positioning clamp plate. This allows for the replacement of positioning clamp plates of different shapes, thus adapting to both soft-pack and hard-shell batteries. This makes the positioning clamp plate more flexible and convenient, enabling it to handle multiple battery specifications and further improving the adaptability of the lithium battery testing device. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0021] Figure 2 This is a front view of the overall structure of this utility model;
[0022] Figure 3 This is a structural unfolded view of the replacement component of this utility model;
[0023] Figure 4 This is a top view of the replacement component structure of this utility model;
[0024] Figure 5 This is a schematic diagram of the replacement component structure of this utility model;
[0025] Figure 6 for Figure 2 Enlarged diagram corresponding to point A in the middle.
[0026] The components represented by each number in the attached diagram are listed below: 1. Base plate; 2. Support leg; 3. Vertical plate; 4. Top plate; 5. Cylinder; 6. Push plate; 7. Positioning component; 8. Replacement component; 9. Mounting frame; 10. Motor; 11. Lead screw; 12. Slider; 13. Connecting block; 14. Connecting plate; 15. Electric push rod; 16. Guide plate; 17. Slide plate; 18. Fixing frame; 19. Right clamping arm; 20. Left clamping arm; 21. Limiting pin; 22. Limiting groove; 23. Positioning clamping plate; 24. Miniature airbag; 25. Pressure sensor. Detailed Implementation
[0027] The present invention will now be described in further detail with reference to the accompanying drawings.
[0028] The following description is intended to disclose the present invention and to enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious modifications will be apparent to those skilled in the art. The basic principles of the present invention defined in the following description can be used in other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.
[0029] Example 1:
[0030] Please see Figures 1-6 The diagram shows a lithium battery testing device with a clamping and positioning structure, including a base plate 1 and a positioning clamping plate 23. It also includes: a support leg 2 installed at the bottom of the base plate 1, the support leg 2 being made of high-strength aluminum alloy with anti-slip rubber pads at the bottom to ensure the device does not shake during testing and to buffer the impact of production line vibrations on testing accuracy; a vertical plate 3 installed on the base plate 1, a top plate 4 installed on top of the vertical plate 3, and a movable testing component (such as a voltage probe or high-definition camera) at the bottom of the top plate 4; and a cylinder 5 installed at the bottom of the base plate 1. The output end of cylinder 5 is fixedly connected to push plate 6 through base plate 1, and push plate 6 is slidably connected to vertical plate 3; and positioning component 7 is installed on push plate 6, positioning component 7 is used to position and clamp lithium battery; and replacement component 8 is installed on positioning component 7, replacement component 8 is used to replace positioning clamping plate 23, micro airbag 24 is installed on positioning clamping plate 23, micro airbag can adapt to the shell of lithium battery, pressure sensor 25 is installed on micro airbag 24, pressure sensor 25 prevents positioning clamping plate 23 from clamping too tightly.
[0031] Furthermore, the positioning component 7 includes a mounting frame 9 mounted on the push plate 6. The mounting frame 9 adopts an integral cast aluminum structure, which reduces weight while ensuring rigidity. A motor 10 is mounted on the outside of the mounting frame 9. The motor 10 is a servo motor with a braking function. The output end of the motor 10 is fixedly connected to a lead screw 11 through a coupling. The other end of the lead screw 11 is rotatably connected to the inner wall of the mounting frame 9.
[0032] Specifically, the lead screw 11 is symmetrically threaded with sliders 12. Both sliders 12 are slidably connected to the inner wall of the mounting frame 9, which facilitates limiting the sliders 12 and ensuring their horizontal movement. Both sliders 12 are fixedly connected to connecting blocks 13 through the mounting frame 9. Both connecting blocks 13 are fixedly connected to connecting plates 14. The connecting blocks 13 and sliders 12 are rigidly connected by internal hex bolts. The connecting plates 14 are made of 5mm thick stainless steel plate (304 material) to avoid deformation during long-term use. Through the cooperation of the motor 10, lead screw 11, sliders 12, connecting blocks 13 and connecting plates 14, it is easy to adapt to lithium batteries of different sizes and to clamp and position lithium batteries of different sizes. At the same time, through the cooperation of the cylinder 5, push plate 6 and upright plate 3, the height of the positioning component 7 can be adjusted, which can improve the adaptability of the lithium battery detection device and further improve the lithium battery detection efficiency.
[0033] Example 2:
[0034] This embodiment provides a further explanation of Example 1, based on... Figures 3-6 As shown, it is worth noting that the replacement component 8 includes an electric push rod 15 mounted on two connecting plates 14. The electric push rod 15 is a DC push rod with a stroke of 50mm. The output ends of the two electric push rods 15 are fixedly connected to guide plates 16. The outside of the two guide plates 16 is fixedly connected to slide plates 17. The two slide plates 17 are slidably connected to fixed frames 18. The fixed frames 18 are fixedly connected to the connecting plates 14.
[0035] Specifically, each of the two fixed frames 18 has a right clamping arm 19 slidably connected inside. Each of the two right clamping arms 19 has a limit pin 21 installed above it. Each of the two right clamping arms 19 has a left clamping arm 20 slidably connected above it. Both the right clamping arms 19 and the left clamping arms 20 are made of chromium-molybdenum steel. Their sliding contact surfaces with the fixed frames 18 are inlaid with bronze bushings to improve wear resistance. Both left clamping arms 20 are slidably connected to the fixed frames 18.
[0036] Meanwhile, two left clamping arms 20 have limiting grooves 22, and two limiting pins 21 pass through the limiting grooves 22 and are fixedly connected to the slide plate 17. The right clamping arm 19 and the left clamping arm 20 are used to clamp, position, and replace the positioning clamping plate 23. The positioning clamping plate 23 can be quickly replaced by the replacement component 8, so that different shapes of positioning clamping plates 23 can be replaced, thus adapting to soft-pack batteries or hard-shell batteries, making the positioning clamping plate 23 more flexible and convenient, and thus able to cope with multiple battery specifications, further improving the adaptability of the lithium battery detection device. A 3mm thick micro airbag 24 is attached to the inner side that contacts the battery. The material is nitrile rubber resistant to electrolyte. The airbag is filled with an inert gas (such as nitrogen). The inflation pressure can be adjusted by a solenoid valve to achieve adaptive wrapping of the battery shell. The pressure sensor 25 is embedded in the surface of the airbag, which can collect the contact pressure in real time and transmit the data to the control system. When the pressure exceeds the preset threshold, the motor 10 is immediately triggered to brake to prevent over-clamping damage.
[0037] It should be noted that the motor 10, cylinder 5, electric push rod 15, miniature airbag 24, pressure sensor 25, etc. are all equipped with power supplies, which are mature technologies in this field and have been fully disclosed, so they will not be repeated in the specification.
[0038] The principle behind this solution is as follows:
[0039] First, when the lithium battery is delivered to the detection area, the cylinder 5 receives the signal and the push rod extends to drive the push plate 6 to rise / fall along the slide rail of the vertical plate 3, adjusting the positioning component 7 to the height aligned with the center of the battery. After it is in place, the magnetic ring sensor built into the cylinder 5 sends a feedback signal, and the push plate 6 locks, waiting for the clamping action.
[0040] Next, the motor 10 starts, driving the lead screw 11 to rotate forward, which in turn drives the two sliders 12 to move synchronously in opposite directions (because the threads at both ends of the lead screw rotate in opposite directions). The connecting plate 14 then moves the replacement component 8 and the positioning clamp 23 closer to the battery. When the micro airbag 24 contacts the battery casing, the airbag is compressed and deformed, and the pressure sensor 25 monitors the pressure value in real time. When the pressure reaches a preset value, the sensor sends a signal to the controller, and the motor 10 immediately brakes and locks, completing the clamping and positioning. At this time, the deviation between the battery's central axis and the reference axis of the detection device (such as a probe or camera) is ≤0.1mm, meeting the requirements for high-precision detection.
[0041] Finally, when different types of batteries need to be tested (such as switching from hard-shell to soft-pack), the control system drives the electric push rod 15 to retract, the guide plate 16 moves the slide plate 17 backward, and the limit pin 21 slides along the limit groove 22, forcing the left clamping arm 20 and the right clamping arm 19 to open to both sides, and the old positioning clamping plate 23 automatically releases. After the operator places the clamping plate adapted to the new battery, the electric push rod 15 extends, the clamping arms reset and clamp the clamping plate (the clamping force is precisely controlled by the push rod stroke to ensure that the clamping plate does not wobble).
[0042] It is understood that this utility model is described through some embodiments, and as those skilled in the art will know, various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, modifications to these features and embodiments can be made to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.
Claims
1. A lithium battery testing device with a clamping and positioning structure, comprising a base plate (1) and a positioning clamping plate (23). Its features are, Also includes: A support leg (2) is installed at the bottom of the base plate (1). A vertical plate (3) is installed on the base plate (1). A top plate (4) is installed on the top of the vertical plate (3). A cylinder (5) is installed at the bottom of the base plate (1). A push plate (6) is fixedly connected to the output end of the cylinder (5) through the base plate (1). The push plate (6) is slidably connected to the vertical plate (3). A positioning component (7) is mounted on the push plate (6), the positioning component (7) being used for positioning and clamping the lithium battery; and, A replacement part (8) is installed on the positioning part (7), the replacement part (8) being used to replace the positioning clamp (23).
2. The lithium battery testing device with a clamping and positioning structure according to claim 1, characterized in that: The positioning component (7) includes a mounting frame (9) mounted on a push plate (6). A motor (10) is mounted on the outside of the mounting frame (9). The output end of the motor (10) is fixedly connected to a lead screw (11) via a coupling. The other end of the lead screw (11) is rotatably connected to the inner wall of the mounting frame (9).
3. A lithium battery testing device with a clamping and positioning structure according to claim 2, characterized in that: The lead screw (11) is symmetrically threaded with sliders (12). Both sliders (12) are slidably connected to the inner wall of the mounting frame (9). Both sliders (12) are fixedly connected to connecting blocks (13) through the mounting frame (9). Both connecting blocks (13) are fixedly connected to connecting plates (14).
4. A lithium battery testing device with a clamping and positioning structure according to claim 3, characterized in that: The replacement component (8) includes an electric push rod (15) mounted on two connecting plates (14). The output ends of the two electric push rods (15) are fixedly connected to guide plates (16). The exterior of the two guide plates (16) is fixedly connected to sliding plates (17). The two sliding plates (17) are slidably connected to fixed frames (18). The fixed frames (18) are fixedly connected to the connecting plates (14).
5. A lithium battery testing device with a clamping and positioning structure according to claim 4, characterized in that: Both of the fixed frames (18) are slidably connected to right clamping arms (19), and limit pins (21) are installed on the top of both right clamping arms (19).
6. A lithium battery testing device with a clamping and positioning structure according to claim 5, characterized in that: Both right clamping arms (19) are slidably connected to left clamping arms (20), and both left clamping arms (20) are slidably connected to the fixed frame (18).
7. A lithium battery testing device with a clamping and positioning structure according to claim 6, characterized in that: Limiting grooves (22) are provided on the two left clamping arms (20), and the two limiting pins (21) pass through the limiting grooves (22) and are fixedly connected to the slide plate (17).
8. A lithium battery testing device with a clamping and positioning structure according to claim 5, characterized in that: The right clamping arm (19) and the left clamping arm (20) are used to clamp, position and replace the positioning clamp (23). The positioning clamp (23) is equipped with a micro airbag (24) and a pressure sensor (25) is installed on the micro airbag (24).