A tool for lithium battery cell bending test

Abstract

The utility model relates to lithium electricity electric core testing equipment technical field, and disclose a kind of for lithium electricity electric core bending test tool, including testing machine body, the surface of testing machine body is equipped with display screen, the surface of testing machine body is equipped with four clamps, the surface of four clamps is equipped with four dismounting device, four dismounting device includes four connecting frames, four connecting frames are all fixedly connected with the surface of clamp, the side fixed connection of connecting frame has fixed link, the one end of fixed link is rotatably connected with single-hole plate, and the bolt is inserted in the single-hole plate inner thread with screw. This kind of tool for lithium electricity electric core bending test, avoid clamp under long time use, clamp damage or performance decline, clamp is difficult to replace alone, lead to need to replace entire testing machine body, cause maintenance cost and downtime increase, influence the situation of test efficiency to appear.

Description

Technical Field

[0001] This utility model relates to the technical field of lithium battery cell testing equipment, and in particular to a tooling for testing the bending of lithium battery cells. Background Technology

[0002] With the rapid development of new energy technologies, lithium-ion battery cells are increasingly widely used in electronic devices, electric vehicles, and other fields. In the manufacturing process of lithium-ion battery cells, bending testing is a crucial step in evaluating the cell's flexibility and reliability. By simulating the bending conditions that a cell might experience in actual use, it detects changes in performance and lifespan. When the fixtures wear out or malfunction, they cannot be disassembled and replaced, requiring the entire testing fixture to be repaired or replaced, leading to significantly increased maintenance costs and prolonged equipment downtime, severely impacting production efficiency.

[0003] Regarding the above and existing related technologies, the inventors believe that the following defects often exist: after long-term use, the fixture may be damaged or its performance may decline. The fixture is difficult to replace individually, which may lead to the need to replace the entire testing machine body, resulting in increased maintenance costs and downtime. Utility Model Content

[0004] The technical problem to be solved by this utility model is that the existing technology has the disadvantage that the fixture is damaged or its performance degrades after long-term use, and the fixture is difficult to replace individually, which leads to the need to replace the entire testing machine body, resulting in increased maintenance costs and downtime, and affecting testing efficiency. To this end, we propose a tooling for bending testing of lithium battery cells.

[0005] To achieve the above objectives, this application adopts the following technical solution: a tooling for testing the bending of lithium battery cells, comprising a testing machine body, a display screen mounted on the surface of the testing machine body, four clamps mounted on the surface of the testing machine body, four disassembly devices provided on the surfaces of the four clamps, the four disassembly devices comprising four connecting frames, all four connecting frames being fixedly connected to the surfaces of the clamps, a fixing rod fixedly connected to one side of each connecting frame, a single-hole plate rotatably connected to one end of each fixing rod, a bolt being threaded into the single-hole plate, an arc-shaped plate fixedly connected to the surface of the testing machine body, the arc-shaped plate being threadedly connected to the arc surface of the bolt, and a circular plate fixedly connected to one end of each bolt.

[0006] Preferably, the arc surface of the fixing rod is fitted with a torsion spring, and the two ends of the torsion spring are fixedly connected to the connecting frame and the single-hole plate, respectively.

[0007] Preferably, an L-shaped plate is fixedly connected to one side of the testing machine body, and the surface of the L-shaped plate is in contact with the connecting frame.

[0008] Preferably, two absorbent pads are fixedly connected to the surface of the testing machine body, and the surface of the absorbent pads is in contact with the single-hole plate.

[0009] Preferably, the surface of the testing machine body is provided with a protective device, the protective device including a fixed frame, the fixed frame being fixedly connected to the surface of the testing machine body, a protective plate being slidably connected inside the fixed frame, a square block being slidably connected inside the fixed frame, a sliding rod being fixedly connected to one side of the square block, the arc surface of the sliding rod being slidably connected to the fixed frame, and a threaded rod being threadedly inserted inside the square block.

[0010] Preferably, a blocking plate is fixedly connected to the arc surface of the threaded rod, and the surface of the blocking plate is in contact with the square block.

[0011] Preferably, a spring is fitted onto the arc surface of the slide rod, and the two ends of the spring are slidably connected to the slide rod and the fixing frame, respectively.

[0012] The technical effects and advantages of this utility model are as follows:

[0013] In this invention, by setting up a disassembly device, the effect of disassembling the fixture is achieved, avoiding the situation where the fixture is damaged or its performance degrades after long-term use, and the fixture is difficult to replace individually, resulting in the need to replace the entire testing machine body, which increases maintenance costs and downtime, and affects testing efficiency, thus improving the reliability of the device.

[0014] In this utility model, by setting a protective device, the display screen is protected, avoiding damage to the display screen from external forces such as impacts or falling foreign objects when it is not in use. This could lead to screen breakage, display abnormalities, and other malfunctions, increasing equipment maintenance costs and downtime. Furthermore, display screen malfunctions could affect test parameter settings and data reading, interfering with the normal conduct of lithium battery cell bending tests, thus improving the practicality of the device. Attached Figure Description

[0015] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts:

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the disassembly device in this utility model;

[0018] Figure 3 In this utility model Figure 2 Enlarged view of point A;

[0019] Figure 4 This is a schematic diagram of the protective device in this utility model;

[0020] Figure 5 This is a partial structural schematic diagram of the protective device in this utility model;

[0021] Figure 6 In this utility model Figure 5 A schematic diagram of a partial structure;

[0022] Figure 7 In this utility model Figure 5 A partial structural diagram.

[0023] Legend: 1. Test machine body; 2. Display screen; 3. Disassembly device; 4. Protective device; 5. Clamp; 31. Fixing rod; 32. Single-hole plate; 33. Arc plate; 34. Bolt; 35. Torsion spring; 36. Absorbent pad; 37. L-shaped plate; 38. Round plate; 39. Connecting frame; 41. Fixing frame; 42. Protective plate; 43. Slide rod; 44. Square block; 45. Threaded rod; 46. Blocking plate; 47. Spring. Detailed Implementation

[0024] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementation methods without changing the essential spirit of this utility model. Therefore, the following specific embodiments and accompanying drawings are merely exemplary descriptions of the technical solution of this utility model, and should not be regarded as the entirety of this utility model or as a limitation or restriction on the technical solution of this utility model.

[0025] Reference Figure 1 As shown, this utility model provides a technical solution: a fixture for lithium battery cell bending testing, including a testing machine body 1, a display screen 2 mounted on the surface of the testing machine body 1, four clamps 5 mounted on the surface of the testing machine body 1, and four disassembly devices 3 on the surface of the four clamps 5. By setting the disassembly devices 3, the clamps 5 can be disassembled, avoiding the situation where the clamps 5 are damaged or their performance degraded after long-term use, making it difficult to replace the clamps individually, thus requiring the replacement of the entire testing machine body 1, increasing maintenance costs and downtime, and affecting testing efficiency, thereby improving the reliability of the device. The surface of the testing machine body 1 is provided with a protective device 4, which protects the display screen 2, preventing the display screen 2 from being directly damaged by external forces such as impacts or falling foreign objects when not in use, which could lead to screen breakage, display abnormalities, and other malfunctions, increasing equipment maintenance costs and downtime. Furthermore, the display screen 2 malfunction may affect the setting of test parameters and data reading, interfering with the normal conduct of lithium battery cell bending testing, thereby improving the practicality of the device.

[0026] The following section will explain the specific design and function of the disassembly device 3 and the protective device 4.

[0027] Reference Figure 2 and Figure 3 As shown in this embodiment: the four disassembly devices 3 include four connecting frames 39, all four connecting frames 39 are fixedly connected to the surface of the clamp 5, a fixing rod 31 is fixedly connected to one side of the connecting frame 39, a single-hole plate 32 is rotatably connected to one end of the fixing rod 31, a bolt 34 is threaded into the single-hole plate 32, an arc plate 33 is fixedly connected to the surface of the testing machine body 1, the arc plate 33 is threaded to the arc surface of the bolt 34, a circular plate 38 is fixedly connected to one end of the bolt 34, a torsion spring 35 is sleeved on the arc surface of the fixing rod 31, and the two ends of the torsion spring 35 are fixedly connected to the connecting frame 39 and the single-hole plate 32 respectively, reaching... This design improves the automatic opening of the single-hole plate 32 while keeping it in the open state, reducing the number of steps required by operators and increasing their work efficiency. Two absorbent pads 36 are fixedly connected to the surface of the testing machine body 1. The surface of the absorbent pads 36 is in contact with the single-hole plate 32, which absorbs the collision force between the single-hole plate 32 and the testing machine body 1. This effectively buffers the collision force generated between the single-hole plate 32 and the testing machine body 1 during the installation, disassembly, and operation of the fixture 5, preventing wear, deformation, or noise caused by rigid collisions, thereby extending the service life of the equipment.

[0028] Reference Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, specifically, the protective device 4 includes a fixed frame 41, which is fixedly connected to the surface of the testing machine body 1. A protective plate 42 is slidably connected inside the fixed frame 41, and a square block 44 is slidably connected inside the fixed frame 41. A sliding rod 43 is fixedly connected to one side of the square block 44, and the arc surface of the sliding rod 43 is slidably connected to the fixed frame 41. A threaded rod 45 is threadedly inserted into the square block 44, and a blocking plate 46 is fixedly connected to the arc surface of the threaded rod 45. The surface of the blocking plate 46 fits against the square block 44, achieving the effect of preventing the threaded rod 45 from being pulled out and avoiding the operator from accidentally pulling it off while rotating the screw. When the threaded rod 45 is rotated too many times, the arc surface of the threaded rod 45 separates from the square block 44. When the staff needs to use it, a secondary installation is required, which increases the workload of the staff. The arc surface of the slide rod 43 is fitted with a spring 47. The two ends of the spring 47 are slidably connected to the slide rod 43 and the fixing frame 41, respectively, which improves the stability of the protective plate 42 and prevents the protective plate 42 from being affected by external forces when the staff are using the display screen 2, so as to avoid the protective plate 42 from moving and affecting the staff's use of the display screen 2.

[0029] Working principle: When the operator needs to use the disassembly fixture 5, the operator first rotates the bolt 34 within the single-hole plate 32 until the arc surface of the bolt 34 separates from the single-hole plate 32. Then, the torque of the torsion spring 35 drives the single-hole plate 32 to rotate at one end of the fixing rod 31 until the surface of the single-hole plate 32 separates from the surface of the arc plate 33. Then, the operator can pull the fixture 5 to slide the connecting frame 39 on the surface of the testing machine body 1 until the surface of the connecting frame 39 separates from the testing machine body 1. Then, the operator can replace the fixture 5 with fixtures of different sizes. When the operator installs a new size fixture 5, the operator first pushes the fixture 5 to move the connecting frame 39 on the L-shaped plate 33. The surface of the fixture 5 slides until it is in contact with the test machine body 1. Then, the operator can rotate the single-hole plate 32 at one end of the fixing rod 31 until one side of the single-hole plate 32 is in contact with the absorption pad 36. Then, the operator can rotate the bolt 34 inside the single-hole plate 32 until the bolt 34 is inserted into the arc plate 33. Then, the operator can use the replaced fixture 5 normally, which achieves the effect of disassembling the fixture 5. This avoids the situation where the fixture 5 is damaged or its performance degrades after long-term use, and the fixture 5 is difficult to replace alone, resulting in the need to replace the entire test machine body 1, which increases maintenance costs and downtime, affects testing efficiency, and improves the reliability of the device.

[0030] When the staff needs to use the display screen 2, they first rotate the threaded rod 45 to move the blocking plate 46. At this time, the spring 47 is in a compressed state until the surface of the blocking plate 46 is in contact with the surface of the square block 44. At this time, the arc surface of the threaded rod 45 separates from the fixing frame 41. Then, the rebound force of the spring 47 moves the square block 44, which in turn moves the protective plate 42 until the protective plate 42 no longer affects the use of the display screen 2. This achieves the effect of protecting the display screen 2 and prevents it from being directly damaged by external forces such as impacts or falling foreign objects when it is not in use. This could lead to screen breakage, abnormal display, or other malfunctions, increasing equipment maintenance costs and downtime. Furthermore, a malfunction of the display screen 2 could affect the setting of test parameters and data reading, interfering with the normal conduct of lithium battery cell bending tests. This improves the practicality of the device.

[0031] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A fixture for testing the bending of lithium battery cells, characterized in that, The test machine includes a test machine body (1), on which a display screen (2) is mounted. Four clamps (5) are mounted on the surface of the test machine body (1). Four disassembly devices (3) are provided on the surface of the four clamps (5). The four disassembly devices (3) include four connecting frames (39). The four connecting frames (39) are fixedly connected to the surface of the clamps (5). A fixing rod (31) is fixedly connected to one side of the connecting frame (39). A single-hole plate (32) is rotatably connected to one end of the fixing rod (31). A bolt (34) is inserted into the thread of the single-hole plate (32). An arc plate (33) is fixedly connected to the surface of the test machine body (1). The arc plate (33) is threadedly connected to the arc surface of the bolt (34). A circular plate (38) is fixedly connected to one end of the bolt (34).

2. The fixture for bending test of lithium battery cells according to claim 1, characterized in that: The arc surface of the fixing rod (31) is fitted with a torsion spring (35), and the two ends of the torsion spring (35) are fixedly connected to the connecting frame (39) and the single-hole plate (32) respectively.

3. The fixture for testing the bending of lithium battery cells according to claim 1, characterized in that: An L-shaped plate (37) is fixedly connected to one side of the test machine body (1), and the surface of the L-shaped plate (37) is in contact with the connecting frame (39).

4. The fixture for bending test of lithium battery cells according to claim 1, characterized in that: Two absorbent pads (36) are fixedly connected to the surface of the test machine body (1), and the surface of the absorbent pads (36) is in contact with the single-hole plate (32).

5. The fixture for bending test of lithium battery cells according to claim 1, characterized in that: The surface of the test machine body (1) is provided with a protective device (4). The protective device (4) includes a fixed frame (41). The fixed frame (41) is fixedly connected to the surface of the test machine body (1). A protective plate (42) is slidably connected inside the fixed frame (41). A square block (44) is slidably connected inside the fixed frame (41). A sliding rod (43) is fixedly connected to one side of the square block (44). The arc surface of the sliding rod (43) is slidably connected to the fixed frame (41). A threaded rod (45) is threadedly inserted inside the square block (44).

6. The fixture for bending test of lithium battery cells according to claim 5, characterized in that: The arc surface of the threaded rod (45) is fixedly connected to the blocking plate (46), and the surface of the blocking plate (46) is in contact with the square block (44).

7. The fixture for bending test of lithium battery cells according to claim 5, characterized in that: The arc surface of the slide rod (43) is fitted with a spring (47), and the two ends of the spring (47) are slidably connected to the slide rod (43) and the fixing frame (41) respectively.

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