Battery cell testing tool

Abstract

The utility model provides a kind of electric core test tool, belong to electric core test technical field.It includes base, the top of base is equipped with square frame, the two adjacent side walls of square frame are equipped with extrusion component, and the corner of the top of square frame away from extrusion component is equipped with the pressing component for pressing the electric core to be tested;Extrusion component includes the L type slider slidingly connected with the side wall of square frame, and screw rod one is threadedly connected on L type slider.The utility model can clamp and compress electric core between the two adjacent inner side walls of square frame and adjacent extrusion plate in horizontal transverse and longitudinal two directions by the cooperation of the extrusion component of the two adjacent side walls of square frame and the pressing component on its top, can clamp and compress electric core between the top of base and pressing plate in vertical direction, so that electric core has clamping limit in vertical, horizontal transverse and longitudinal direction, relative to the single direction limit of traditional electric core, it can effectively avoid electric core moving to other two directions when testing, to avoid affecting the accuracy of extrusion test result.

Description

Technical Field

[0001] This utility model provides a battery cell testing fixture, belonging to the field of battery cell testing technology. Background Technology

[0002] With the increasing popularity of new energy electric vehicles and portable electronic devices, battery safety and reliability have become a major concern. As the core component of a battery, the quality of the battery cell directly affects its performance and safety. During a collision in actual vehicle operation, pouch cells are subjected to external impact and compression. This compression can lead to leakage and internal short circuits. To mitigate this safety risk, compression tests are necessary to assess the safety performance of pouch cells.

[0003] In compression testing, a battery cell testing fixture is typically required to clamp and secure the battery cell under test. While existing fixtures generally meet normal usage needs, they still have certain drawbacks: clamping and pressing the battery cell usually involves two opposing clamping plates, resulting in a relatively unidirectional clamping and pressing. The battery cell often lacks clamping limits in the other two directions, leading to potential movement in those directions during testing and affecting the accuracy of the compression test results. Therefore, this invention provides a battery cell testing fixture. Utility Model Content

[0004] The technical problem solved by this utility model is that the battery cell is clamped and pressed by two opposing clamping plates, but the battery cell does not have clamping limits in the other two directions, which causes the battery cell to move in the other two directions during the test, affecting the accuracy of the compression test results.

[0005] To solve the technical problem, the technical solution provided by this utility model is as follows: a battery cell testing fixture, including a base, a square frame on the top of the base, extrusion components on both adjacent side walls of the square frame, and a pressing component for pressing down the battery cell to be tested at a corner of the top of the square frame away from the extrusion components; the extrusion component includes an L-shaped slider slidably connected to the side wall of the square frame, a screw threadedly connected to the L-shaped slider, a mounting plate rotatably connected to one end of the screw and placed inside the square frame, a pressure sensor on one side wall of the mounting plate, and an extrusion plate on one side wall of the pressure sensor.

[0006] Furthermore, the pressing assembly includes a support plate fixedly installed at the top of the frame away from one corner of the extrusion assembly. A screw rod is threadedly connected to the support plate. A mounting plate is rotatably connected to the bottom of the screw rod and placed inside the frame. A handwheel is provided at the top of the screw rod and above the support plate. A pressure sensor is provided at the bottom of the mounting plate, and a pressing plate is provided at the bottom of the pressure sensor.

[0007] Furthermore, the lower pressure plate is symmetrically provided with limiting rods passing through the support plate on both sides of its top.

[0008] Furthermore, each of the adjacent side walls of the frame is provided with a sliding groove that is slidably connected to the L-shaped slider and passes through the screw. The bottom and top of the sliding groove are provided with limiting rails that match the side walls of the L-shaped slider.

[0009] Furthermore, the upper outer wall of the L-shaped slider is threaded with a locking bolt, and the side wall of the square frame is provided with several adjustment holes that are positioned above the slide groove and match the locking bolt.

[0010] Furthermore, the other end of the screw is provided with a handwheel located outside the frame, and the sidewall of the extrusion plate is symmetrically provided with a limiting rod passing through the L-shaped slider.

[0011] The beneficial effects of this utility model are:

[0012] With the joint action of the extrusion components on the adjacent side walls of the frame and the pressing component on top, the battery cell can be clamped and pressed between the adjacent inner side walls of the frame and the adjacent extrusion plate in both horizontal and vertical directions. It can also clamp and press the battery cell vertically between the top of the base and the pressing plate. This allows the battery cell to be clamped and limited in three directions: vertical, horizontal, and longitudinal. Compared with traditional battery cells that are limited in only one direction, this can effectively prevent the battery cell from moving in the other two directions during testing, so as not to affect the accuracy of the extrusion test results. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a battery cell testing fixture according to the present invention. Figure 1 .

[0014] Figure 2 This is a schematic diagram of the structure of a battery cell testing fixture according to the present invention. Figure 2 .

[0015] Figure 3 This is a schematic diagram of the structure of a battery cell testing fixture according to the present invention. Figure 3 .

[0016] Figure 4 This is a schematic diagram of the structure of a battery cell testing fixture according to the present invention. Figure 4 .

[0017] 1. Base; 2. Square frame; 3. Extrusion assembly; 4. Pressing assembly; 5. L-shaped slider; 6. Screw 1; 7. Mounting plate 1; 8. Pressure sensor 1; 9. Extrusion plate; 10. Support plate; 11. Screw 2; 12. Pressure sensor 2; 13. Pressing plate; 14. Limiting rod 2; 15. Slide groove; 16. Limiting rail; 17. Locking bolt; 18. Adjustment hole; 19. Limiting rod 1. Detailed Implementation

[0018] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly mentioned in this specification are defined relative to their structure and are relative concepts. Therefore, they may vary depending on their location and usage; thus, these or other directional terms should not be interpreted as restrictive terms.

[0019] The singular forms “a,” “the,” and “the” used in this specification are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes one or more of the associated listed items, any or all possible combinations thereof.

[0020] To make the technical problems to be solved, the technical solutions, and the beneficial effects of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0021] According to the appendix Figure 1-3 As shown: This utility model provides a battery cell testing fixture, including a base 1. The base 1 has a square frame 2 at its top. Each adjacent side wall of the square frame 2 has a pressing assembly 3. The pressing assembly 3 includes an L-shaped slider 5 slidably connected to the side wall of the square frame 2. A screw 6 is threaded onto the L-shaped slider 5. Each adjacent side wall of the square frame 2 has a groove 15 slidably connected to the L-shaped slider 5 and passing through the screw 6. The bottom and top of the groove 15 have limiting rails 16 that match the side wall of the L-shaped slider 5, serving to limit the movement of the L-shaped slider 5. A locking bolt 17 is threaded onto the outer upper wall of the L-shaped slider 5. The side wall of the square frame 2 has several adjusting holes 18 positioned above the groove 15 and matching the locking bolt 17. By matching the locking bolt 17 with the adjusting holes 18 at different positions… This allows the L-shaped slider 5 to be locked in a suitable position according to usage needs. One end of the screw 6 is rotatably connected to the mounting plate 7 located inside the frame 2. The side wall of the mounting plate 7 is equipped with a pressure sensor 8, and the side wall of the pressure sensor 8 is equipped with a pressing plate 9. The pressure sensor 8 is fixedly installed between the mounting plate 7 and the pressing plate 9 by bolts, and is used to monitor the actual pressure of the battery cell on the pressing plate 9 in real time. The other end of the screw 6 is equipped with a handwheel located outside the frame 2. The side wall of the pressing plate 9 is symmetrically equipped with a limiting rod 19 that passes through the L-shaped slider 5, which serves to limit the pressing plate 9. Specifically, by holding the handwheel and rotating it, the screw 6 is rotated and moved. Under the limitation of the limiting rod 19, the mounting plate 7, the pressure sensor 8, and the pressing plate 9 can be moved back and forth.

[0022] As per the instruction manual Figure 1 ,4 As shown: A pressing component 4 for pressing down the battery cell under test is provided at the corner of the top of the frame 2 away from the pressing component 3. The pressing component 4 includes a support plate 10 fixedly installed at the corner of the top of the frame 2 away from the pressing component 3. A screw 11 is threadedly connected to the support plate 10. A mounting plate 2 placed inside the frame 2 is rotatably connected to the bottom of the screw 11. A handwheel 2 is provided at the top of the screw 11 and above the support plate 10. A pressure sensor 12 is provided at the bottom of the mounting plate 2. A pressing plate 13 is provided at the bottom of the pressure sensor 12. Limiting rods 14 passing through the support plate 10 are symmetrically provided on both sides of the top of the pressing plate 13, which serve to limit the pressing plate 13. Specifically, by holding the handwheel 2 and rotating it, the screw 11 is rotated and moved. Under the limitation of the limiting rods 14, the mounting plate 2, pressure sensor 12, and pressing plate 13 are moved up and down.

[0023] As an optional embodiment, the outer wall of the frame 2 is provided with a control panel that is electrically connected to the pressure sensor 8 and the pressure sensor 12. The pressure sensor 8, the pressure sensor 12, and the control panel all adopt existing known mature technologies. The pressure signals monitored by the pressure sensor 8 and the pressure sensor 12 are transmitted to the control panel and, after being processed by the control panel, are displayed on the screen of the control panel in the form of numerical values.

[0024] The control method of this utility model is through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail.

[0025] The principle of this utility model

[0026] In use, place the battery cell to be tested into the frame 2 and make it fit against the top of the base 1. Then move the battery cell towards the pressing component 4 so that the two adjacent sidewalls of the battery cell fit against the adjacent sidewalls of the frame 2 away from the pressing component 3. Then operate the two adjacent pressing components 3 to move the L-shaped slider 5 towards the battery cell to a suitable position so that the pressing plate 9 moves to a suitable position on the side of the battery cell to be tested. By using the locking bolt 17 to cooperate with the corresponding adjustment hole 18, the L-shaped slider 5 can be locked in a suitable position as needed. Then, by holding the handwheel and turning it, the mounting plate 7, pressure sensor 8, and pressing plate 9 are moved back and forth until the pressing plate 9... The sidewall is tightly fitted to one sidewall of the battery cell, thus clamping and pressing the battery cell in both horizontal and vertical directions between the adjacent inner sidewall of the frame 2 and the adjacent extrusion plate 9. Then, by operating the pressing component 4, the handwheel 2 is rotated to move the mounting plate 2, pressure sensor 2 12, and pressing plate 13 up and down until the bottom of the pressing plate 13 is tightly fitted to the top of the battery cell. This allows the battery cell to be vertically clamped and pressed between the top of the base 1 and the pressing plate 13. This ensures that the battery cell has clamping and limiting in the vertical, horizontal, and longitudinal directions. Compared to the traditional battery cell which is limited in only one direction, this effectively prevents the battery cell from moving in the other two directions during testing, so as not to affect the accuracy of the extrusion test results.

[0027] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A battery cell testing fixture, comprising a base (1), characterized in that: The base (1) has a square frame (2) on top. The square frame (2) has extrusion components (3) on both adjacent side walls. The square frame (2) has a pressing component (4) on one corner away from the extrusion component (3) for pressing down the battery cell to be tested. The extrusion component (3) includes an L-shaped slider (5) that is slidably connected to the side wall of the square frame (2). A screw (6) is threaded onto the L-shaped slider (5). One end of the screw (6) is rotatably connected to a mounting plate (7) placed inside the square frame (2). A pressure sensor (8) is provided on the side wall of the mounting plate (7). An extrusion plate (9) is provided on the side wall of the pressure sensor (8).

2. The battery cell testing fixture according to claim 1, characterized in that: The pressing assembly (4) includes a support plate (10) fixedly installed at the top of the frame (2) away from the corner of the extrusion assembly (3). The support plate (10) is threaded with a screw rod (11). The bottom of the screw rod (11) is rotatably connected to a mounting plate (2) placed inside the frame (2). The top of the screw rod (11) is provided with a handwheel (2) placed above the support plate (10). The bottom of the mounting plate (2) is provided with a pressure sensor (12). The bottom of the pressure sensor (12) is provided with a pressing plate (13).

3. The battery cell testing fixture according to claim 2, characterized in that: The lower pressure plate (13) is symmetrically provided with limiting rods (14) on both sides of the top, which pass through the support plate (10).

4. The battery cell testing fixture according to claim 1, characterized in that: The adjacent side walls of the frame (2) are provided with a sliding groove (15) that is slidably connected to the L-shaped slider (5) and passes through the screw (6). The bottom and top of the sliding groove (15) are provided with a limiting rail (16) that matches the side wall of the L-shaped slider (5).

5. The cell testing fixture according to claim 4, characterized in that: The upper outer wall of the L-shaped slider (5) is threaded with a locking bolt (17), and the side wall of the frame (2) is provided with a number of adjustment holes (18) that are positioned above the slide groove (15) and match the locking bolt (17).

6. The battery cell testing fixture according to claim 1, characterized in that: The other end of the screw (6) is provided with a handwheel (1) placed outside the square frame (2), and the side wall of the extrusion plate (9) is symmetrically provided with a limiting rod (19) that passes through the L-shaped slider (5).

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