Battery cell test tool and battery cell test equipment

Abstract

The utility model relates to the technical field of battery cell testing, and discloses a battery cell testing tool and battery cell testing equipment, and the battery cell testing tool comprises a base, a clamping assembly, a first probe assembly, a sliding block and a second probe assembly. The clamping assembly is connected with the base and used for clamping the two sides of the battery cell. The first probe assembly is connected with the base and used for abutting against an electrode at the first end of the battery cell. The sliding block is slidably connected with the base, the second probe assembly is connected with the sliding block, the sliding block slides to enable the second probe assembly to move close to or away from the first probe assembly, and the second probe assembly is used for abutting against an electrode at the second end of the battery cell. According to the battery cell test tool, for battery cells with different lengths, only the sliding block needs to be slid to enable the second probe assembly to move away from the first probe assembly, it is guaranteed that the battery cells can be placed between the first probe assembly and the second probe assembly, and use of the multiple battery cells with different lengths is achieved.

Description

Technical Field

[0001] This application relates to the field of battery cell testing technology, specifically to a battery cell testing fixture and battery cell testing equipment. Background Technology

[0002] The research and development and production of battery cells require extensive testing, including charge / discharge performance testing, lifespan testing, electrode temperature testing, and voltage testing. During testing, the battery cell is clamped in a testing fixture equipped with a probe assembly for contacting the cell's electrodes. This assembly includes probes that are placed against the positive and negative terminals of the cell. Connecting the probes to appropriate testing instruments allows for cell testing. Temperature sensors or voltage sensors can be installed on the probes, with specific functions tailored to requirements.

[0003] Prismatic cells are now widely used due to their high energy density and long lifespan. For prismatic cells, the positive and negative terminals are located at opposite ends. Therefore, after the prismatic cell is clamped in a cell testing fixture, two probes are located at opposite ends of the cell and contact the positive and negative terminals respectively. Because the distance between the two probes in existing cell testing fixtures is fixed, one fixture cannot be used for prismatic cells of different lengths; different testing fixtures must be designed for different lengths of prismatic cells.

[0004] Therefore, how to solve or improve the problem that a single cell testing fixture cannot be used for square cells of different lengths has become an important technical problem for those skilled in the art. Utility Model Content

[0005] In view of this, this application provides a cell testing fixture and a cell testing device to solve or improve the problem that a single cell testing fixture cannot be used for square cells of different lengths.

[0006] Firstly, this application provides a battery cell testing fixture, comprising:

[0007] Base;

[0008] A clamping assembly, connected to the base, is used to clamp both sides of the battery cell;

[0009] The first probe assembly is connected to the base and is used to contact the electrode at the first end of the battery cell;

[0010] The slider is slidably connected to the base.

[0011] The second probe assembly is connected to the slider. The slider can slide to move the second probe assembly closer to or away from the first probe assembly. The second probe assembly is used to contact the electrode at the second end of the battery cell.

[0012] Optionally, the first probe assembly includes:

[0013] The first bracket is connected to the base;

[0014] The first probe is used to contact the electrode at the first end of the battery cell;

[0015] A lifting device is connected to the first bracket and to the first probe. The lifting device is used to drive the first probe to move closer to or away from the base.

[0016] Optionally, the lifting device includes:

[0017] The screw has a first groove on its first support along a direction perpendicular to the base. The first probe is slidably connected in the first groove. A through hole is formed between the side of the first support away from the base and the inner wall of the first groove. The screw passes through the through hole and is connected to the first probe.

[0018] A nut is screwed onto the screw rod, and the nut presses against the side of the first bracket away from the base under its own weight.

[0019] Optionally, the second probe assembly includes:

[0020] The second bracket is connected to the slider;

[0021] The second probe is slidably connected to the second bracket;

[0022] A first locking member is provided, and the second probe is connected to the second bracket via the first locking member. The first locking member can switch between a first state and a second state. When the first locking member is in the first state, the second probe can slide in a direction perpendicular to the slider. When the first locking member is in the second state, the second probe is fixedly connected to the second bracket.

[0023] Optionally, the first locking element includes:

[0024] The bolt has a second groove and a third groove on the second bracket along a direction perpendicular to the base, and the second probe is slidably connected in the second groove.

[0025] The second probe has a threaded hole, and the bolt passes through the gasket and the third groove in sequence and is screwed into the threaded hole. When the first locking member is in the first state, the bolt can slide along the third groove. When the first locking member is in the second state, the bolt abuts against the side of the second bracket away from the second probe through the gasket.

[0026] Optionally, it also includes:

[0027] A quick clamp is provided, wherein the second bracket is slidably connected to the slider, the quick clamp is connected to the second bracket, and is used to drive the second bracket to slide closer to or further away from the first probe assembly.

[0028] Optionally, the clamping assembly includes:

[0029] A first mounting base is slidably connected to the slider, and a first slot is provided on the first mounting base;

[0030] The first clamping plate is partially inserted into the first slot;

[0031] The second mounting base is slidably connected to the slider, and the first mounting base has a second slot. The first mounting base and the second mounting base can slide closer to or further away from each other.

[0032] The second clamping plate is partially inserted into the second slot. The first clamping plate and the second clamping plate are arranged parallel to each other and can slide closer or further apart. The first clamping plate and the second clamping plate are used to clamp the battery cell.

[0033] Optionally, the clamping assembly further includes:

[0034] The mounting block is slidably connected to the base, and the mounting block can slide closer to or further away from the slider.

[0035] The third mounting base is slidably connected to the mounting block, and the third mounting base has a third slot, in which the first clamping plate is inserted.

[0036] The fourth mounting base is slidably connected to the mounting block. The fourth mounting base has a fourth slot, and the second clamping plate is inserted into the fourth slot. The third mounting base and the fourth mounting base can slide closer to or further away from each other.

[0037] Optionally, the clamping assembly further includes:

[0038] The second locking element is detachably connected to both the first clamping plate and the second clamping plate.

[0039] This application provides a battery cell testing fixture. A clamping assembly is connected to a base, allowing for clamping of both sides of the battery cell to secure it. A first probe assembly is connected to the base and is used to contact the electrode at the first end of the battery cell. A slider is slidably connected to the base, and a second probe assembly is connected to the slider. As the slider slides, the second probe assembly moves closer to or away from the first probe assembly and is used to contact the electrode at the first end of the battery cell.

[0040] When testing a battery cell, the sliding slider moves the second probe assembly away from the first probe assembly, allowing the battery cell to be placed between the first and second probe assemblies. After placing the battery cell between the first and second probe assemblies, the clamping assembly holds the cell in place. At this point, the first probe assembly abuts against the electrode at the first end of the battery cell, and the second probe assembly abuts against the electrode at the second end of the battery cell. Thus, by connecting the first and second probe assemblies to the corresponding testing instruments, the battery cell can be tested. For battery cells of different lengths, simply sliding the slider moves the second probe assembly away from the first probe assembly, ensuring the cell can be placed between the first and second probe assemblies, enabling the use of multiple battery cells of different lengths.

[0041] Secondly, this application also provides a battery cell testing device, including multiple battery cell testing fixtures as described above.

[0042] This application provides a battery cell testing device. When testing multiple battery cells simultaneously, each battery cell is clamped in a corresponding battery cell testing fixture. When replacing a battery cell, it is only necessary to remove it from the corresponding battery cell testing fixture without affecting the battery cells being tested in other battery cell testing fixtures, making it more convenient to use. Attached Figure Description

[0043] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of this application, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0044] Figure 1 This is a first-view axonometric view of a battery cell testing fixture according to an embodiment of this application;

[0045] Figure 2 This is a second-view axonometric view of a battery cell testing fixture according to an embodiment of this application;

[0046] Figure 3 This is a top view of a battery cell testing fixture according to an embodiment of this application;

[0047] Figure 4 This is a schematic diagram of the first probe assembly structure of a battery cell testing fixture according to an embodiment of this application;

[0048] Figure 5 This is a schematic diagram showing the connection between the second probe assembly and the slider of a battery cell testing fixture according to an embodiment of this application;

[0049] Figure 6 This is a schematic diagram of the sliding structures of a battery cell testing fixture according to an embodiment of this application;

[0050] Figure 7 This is a schematic diagram of a cell test according to an embodiment of this application.

[0051] Explanation of reference numerals in the attached figures:

[0052] 1. Base; 11. Fourth slide groove; 2. Slider; 21. First locking hole; 22. Fifth slide groove; 23. Seventh slide groove; 3. Clamping assembly; 31. First mounting base; 311. First slot; 312. Second locking hole; 32. First clamping plate; 33. Second mounting base; 331. Second slot; 332. Third locking hole; 34. Second clamping plate; 35. Third mounting base; 351. Third slot; 352. Fifth locking hole; 36. Fourth mounting base; 361. Fourth slot; 362. Sixth locking hole; 37. Mounting block; 371. Fourth locking hole; 372. Sixth slide groove; 38. Second locking element; 4. First probe assembly; 41. First bracket; 411. First slide groove; 42. First... 421. Probe component; 422. First base block; 423. First charge / discharge probe; 424. First mounting rod; 425. First temperature probe; 426. First elastic element; 43. Lifting device; 431. Screw; 432. Nut; 5. Second probe assembly; 51. Second bracket; 511. Second slide groove; 512. Third slide groove; 52. Second probe component; 521. Second base block; 522. Second charge / discharge probe; 523. Second mounting rod; 524. Second temperature probe; 525. Second voltage probe; 526. Second elastic element; 53. First locking element; 531. Bolt; 532. Washer; 6. Battery cell; 7. Quick clamp; 8. Base frame; 81. Module connector. Detailed Implementation

[0053] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0054] The following is combined with Figures 1 to 7 This describes an embodiment of the present application.

[0055] According to embodiments of this application, in one aspect, a cell testing fixture is provided, such as... Figures 1 to 3 As shown, it includes a base 1, a clamping assembly 3, a first probe assembly 4, a slider 2, and a second probe assembly 5.

[0056] The clamping component 3 is connected to the base 1. The clamping component 3 can be used to clamp both sides of the battery cell 6 to fix the battery cell 6.

[0057] The first probe assembly 4 is connected to the base 1, wherein the first probe assembly 4 is used to contact the electrode at the first end of the battery cell 6.

[0058] The slider 2 is slidably connected to the base 1. The second probe assembly 5 is connected to the slider 2. When the slider 2 slides, it can drive the second probe assembly 5 to move closer to or away from the first probe assembly 4. The second probe assembly 5 is used to contact the electrode at the first end of the cell 6.

[0059] When testing cell 6 is required, the sliding slider 2 moves the second probe assembly 5 away from the first probe assembly 4, allowing cell 6 to be placed between the first probe assembly 4 and the second probe assembly 5. After cell 6 is placed between the first probe assembly 4 and the second probe assembly 5, the clamping assembly 3 clamps cell 6. At this time, the first probe assembly 4 abuts against the electrode at the first end of cell 6, and the second probe assembly 5 abuts against the electrode at the second end of cell 6. In this way, by connecting the first probe assembly 4 and the second probe assembly 5 to the corresponding testing instruments, cell 6 can be tested.

[0060] For battery cells 6 of different lengths, simply slide the slider 2 to move the second probe assembly 5 away from the first probe assembly 4, ensuring that the battery cell 6 can be placed between the first probe assembly 4 and the second probe assembly 5. This allows for the use of multiple battery cells 6 of different lengths. Multiple tooling is not required for multiple battery cells 6 of different lengths, reducing testing costs.

[0061] Regarding the connection between slider 2 and base 1, base 1 is plate-shaped and has a fourth sliding groove 11. The fourth sliding groove 11 is positioned along the direction from the first probe assembly 4 to the second probe assembly 5. Slider 2 has a first sliding joint, and slider 2 is mounted on base 1 with the first sliding joint slidably connected to the fourth sliding groove 11, allowing slider 2 to slide along the fourth sliding groove 11. As slider 2 slides along the fourth sliding groove 11, the second probe assembly 5 moves closer to or further away from the first probe assembly 4.

[0062] Two fourth slide grooves 11 can be provided. Two first sliding parts are provided on the slider 2. The two first sliding parts are located on both sides of the bottom of the slider 2, and each first sliding part is slidably connected in a fourth slide groove 11.

[0063] Alternatively, a first locking hole 21 can be provided on the slider 2. After the locking bolt 531 is passed through the first locking hole 21 and the fourth sliding groove 11 in sequence, a locking nut 432 is fitted on the locking bolt 531. After sliding the slider 2 to the designated position, tightening the locking nut 432 will press and fix the slider 2 and the base 1, preventing the slider 2 from sliding relative to the base 1.

[0064] As an optional embodiment, such as Figure 4 As shown, the first probe assembly 4 includes a first bracket 41, a first probe element 42, and a lifting device 43. The first bracket 41 is connected to the base 1, the lifting device 43 is connected to the first bracket 41, and the first probe element 42 is connected to the lifting device 43. Thus, the first probe element 42 is connected to the first bracket 41 through the lifting device 43, and the lifting device 43 can drive the first probe element 42 to move up and down, thus moving closer to or away from the base 1.

[0065] In this way, the lifting device 43 drives the first probe 42 to a suitable position, so that after the clamping assembly 3 clamps the battery cell 6, the first probe 42 is exactly at the same height as the electrode at the first end of the battery cell 6, so that the first probe 42 can abut against the electrode at the first end of the battery cell 6. Thus, this battery cell testing fixture can test battery cells 6 with different electrode heights without the need for multiple fixtures, reducing testing costs.

[0066] In a further embodiment, the lifting device 43 includes a screw 431 and a nut 432. A first groove 411 is formed on the first bracket 41, and the first groove 411 is formed in a direction perpendicular to the base 1. A first probe 42 is slidably connected in the first groove 411. Thus, the first probe 42 can move closer to or away from the base 1 by sliding along the first groove 411.

[0067] A through hole is provided on the side of the first bracket 41 away from the base 1, so that the through hole extends through to the inner wall of the first slide groove 411. The screw 431 is inserted into the through hole from the side of the first bracket 41 away from the base 1, and after passing through the through hole, it is connected to the first probe 42. Thus, the screw 431 can move up and down to drive the first probe 42 to slide along the first slide groove 411.

[0068] Nut 432 is fitted onto the portion of screw 431 that protrudes from the first bracket 41. Under its own weight, nut 432 abuts against the side of the first bracket 41 furthest from the base 1, preventing the first probe 42 from moving further towards the base 1. Rotating nut 432 adjusts the length of the portion of screw 431 protruding from the first bracket 41, thereby adjusting the distance between the first probe 42 and the base 1, i.e., adjusting the height of the first probe 42.

[0069] In some embodiments, the first probe element 42 includes a first base block 421, a first charge / discharge probe 422, and a first mounting rod 423. The first base block 421 has a first mounting hole. One end of the first mounting rod 423 is connected to the first charge / discharge probe 422, and the other end passes through the first mounting hole. The first base block 421 is slidably connected in a first groove 411, allowing it to move closer to or further away from the base 1. After the first charge / discharge probe 422 abuts against the electrode at the first end of the battery cell 6, the first mounting rod 423 is connected to a testing instrument to perform a charge / discharge test.

[0070] The first probe element 42 may further include a first elastic element 426, which may be a spring. The first mounting rod 423 can slide along the first mounting hole, connecting the first charge / discharge probe 422 to the first base block 421 via the first elastic element 426. When the first charge / discharge probe 422 abuts against the electrode at the first end of the battery cell 6, the first elastic element 426 is compressed, thereby pressing the first charge / discharge probe 422 firmly against the electrode at the first end of the battery cell 6 under the elastic force of the first elastic element 426, ensuring the reliability between the first charge / discharge probe 422 and the electrode. At the same time, the distance between the first base block 421 and the electrode can be set as needed to obtain different abutment forces of the first charge / discharge probe 422 against the electrode.

[0071] The first probe 42 may also include a first temperature probe 424 or a first voltage probe 425. After the first temperature probe 424 or the first voltage probe 425 is brought into contact with the electrode at the first end of the cell 6, the first temperature probe 424 or the first voltage probe 425 is then connected to the corresponding testing instrument to test the temperature or voltage.

[0072] The first charge / discharge probe 422 can be provided with multiple first through holes. The elastic needle portion of the first temperature probe 424 and the elastic needle portion of the first voltage probe 425 extend out of one of the first through holes. When the first charge / discharge probe 422 abuts against the electrode at the first end of the battery cell 6, the elastic needle portion of the first temperature probe 424 is compressed into the first through hole while abutting against the electrode, and the elastic needle portion of the first voltage probe 425 is compressed into the first through hole while abutting against the electrode. This allows the first temperature probe 424 or the first voltage probe 425 to simultaneously abut against the electrode when the first charge / discharge probe 422 abuts against the electrode at the first end of the battery cell 6, making operation more convenient.

[0073] It is worth noting that the elastic needle portion of the first temperature probe 424 or the elastic needle portion of the first voltage probe 425 is insulated from the inner wall of the first through hole on the first charge / discharge probe 422.

[0074] As an optional embodiment, such as Figure 5 As shown, the second probe assembly 5 includes a second bracket 51, a second probe element 52, and a first locking element 53. The second bracket 51 is connected to the slider 2, so that when the slider 2 slides, it can move the second bracket 51 closer to or further away from the first probe assembly 4. The second probe element 52 is slidably connected to the second bracket 51, so that the second probe element 52 can slide in a direction perpendicular to the slider 2, that is, slide closer to or further away from the slider 2.

[0075] The second probe 52 is connected to the second bracket 51 via a first locking member 53, which can switch between a first state and a second state. When the first locking member 53 is in the first state, the second probe 52 can slide in a direction perpendicular to the slider 2. When the first locking member 53 is in the second state, the second probe 52 and the second bracket 51 are fixedly connected via the first locking member 53, preventing the second probe 52 from sliding.

[0076] Slide the second probe 52 to a suitable position so that after the clamping assembly 3 clamps the battery cell 6, the second probe 52 is exactly at the same height as the electrode at the second end of the battery cell 6. Then, switch the first locking member 53 to the first state, fixing the second probe 52 at the current height so that the second probe 52 can abut against the electrode at the second end of the battery cell 6. Then slide the slider 2 to move the second probe 52 closer to the first probe assembly 4 until the second probe 52 abuts against the electrode at the second end of the battery cell 6, at which point the test can be performed.

[0077] If replacing a battery cell 6 with a different electrode height, first switch the first locking member 53 to the second state, slide the second probe member 52 to the appropriate position, so that after the clamping assembly 3 clamps the battery cell 6, the second probe member 52 is exactly at the same height as the electrode at the second end of the battery cell 6. Then switch the first locking member 53 to the first state, so that the second probe member 52 is fixed at the current height, ensuring that the second probe member 52 can abut against the electrode at the second end of the battery cell 6.

[0078] Therefore, this cell testing fixture can test cells 6 with different electrode heights without the need for multiple fixtures, thus reducing testing costs.

[0079] In an optional embodiment, the first locking member 53 includes a bolt 531 and a washer 532. A second sliding groove 511 and a third sliding groove 512 are formed on the second bracket 51. The second sliding groove 511 and the third sliding groove 512 are parallel and both are formed in a direction perpendicular to the base 1. The second probe member 52 is slidably connected in the second sliding groove 511, so that the second probe member 52 can slide along the second sliding groove 511 to approach or move away from the slider 2.

[0080] The second probe 52 has a threaded hole. The bolt 531 is passed through the washer 532 and the third slide groove 512 in sequence. Then, the end of the bolt 531 that is out of the third slide groove 512 is screwed into the threaded hole.

[0081] When bolt 531 is tightened, bolt 531 abuts against the side of the second bracket 51 away from the second probe 52 through washer 532, thereby fixing the second probe 52 against the second bracket 51. At this time, the first locking member 53 is in the second state, and the second probe 52 cannot slide.

[0082] When bolt 531 is loosened, washer 532 no longer presses against second bracket 51, and bolt 531 can slide along third slide groove 512. At this time, first locking member 53 is in first state, and second probe member 52 can slide along second slide groove 511.

[0083] In some embodiments, the second probe element 52 includes a second base block 521, a second charge / discharge probe 522, and a second mounting rod 523. The second base block 521 has a second mounting hole. One end of the second mounting rod 523 is connected to the second charge / discharge probe 522, and the other end passes through the second mounting hole. The second base block 521 is slidably connected in the second groove 511, allowing it to move closer to or further away from the base 1. After the second charge / discharge probe 522 abuts against the electrode at the second end of the battery cell 6, the second mounting rod 523 is connected to a testing instrument for testing.

[0084] The second probe 52 may further include a second elastic element 526, which can be a spring. The second mounting rod 523 can slide along the second mounting hole, connecting the second charge / discharge probe 522 to the second base block 521 via the second elastic element 526. When the second charge / discharge probe 522 abuts against the electrode at the second end of the battery cell 6, the second elastic element 526 is compressed. Under the elastic force of the second elastic element 526, the second charge / discharge probe 522 presses firmly against the electrode at the second end of the battery cell 6, ensuring the reliability between the second charge / discharge probe 522 and the electrode. Simultaneously, the distance between the second base block 521 and the electrode can be set as needed to obtain different contact forces between the second charge / discharge probe 522 and the electrode.

[0085] In some embodiments, the second probe 52 further includes a second temperature probe 524 or a second voltage probe 525. After the second temperature probe 524 or the second voltage probe 525 is brought into contact with the electrode at the second end of the cell 6, the second temperature probe 524 or the second voltage probe 525 is then connected to the corresponding testing instrument to test the temperature or voltage.

[0086] The second charge / discharge probe 522 can be provided with multiple second through holes. The elastic needle portion of the second temperature probe 524 and the elastic needle portion of the second voltage probe 525 extend out of one of the second through holes. When the second charge / discharge probe 522 abuts against the electrode at the second end of the battery cell 6, the elastic needle portion of the second temperature probe 524 is compressed into the second through hole while abutting against the electrode, and the elastic needle portion of the second voltage probe 525 is compressed into the second through hole while abutting against the electrode. This allows the second charge / discharge probe 522 to abut against the electrode at the first end of the battery cell 6, while simultaneously achieving abutment between the second temperature probe 524 or the second voltage probe 525 and the electrode, making operation more convenient.

[0087] It is worth noting that the elastic needle part of the second temperature probe 524 or the elastic needle part of the second voltage probe 525 is insulated from the inner wall of the second through hole on the second charge / discharge probe 522.

[0088] When the first charge / discharge probe 422 and the second charge / discharge probe 522 are in contact with the electrodes at both ends of the battery cell, the battery cell can be charged and discharged through the first charge / discharge probe 422 and the second charge / discharge probe 522.

[0089] As an optional embodiment, such as Figure 3 and Figure 6 As shown, the battery cell testing fixture also includes a quick clamp 7, which is a mechanical device used to quickly clamp or release objects. It can generate a large clamping force in a short time and is widely used in many fields such as machining, woodworking, welding, and assembly.

[0090] The second bracket 51 is slidably connected to the slider 2, allowing the second bracket 51 to slide relative to the slider 2 and move closer to or further away from the first probe assembly 4. The movable end of the quick clamp 7 is connected to the second bracket 51, and the quick clamp 7 can be used to push or pull the second bracket 51 to make the second bracket 51 slide closer to or further away from the first probe assembly 4.

[0091] Thus, when the battery cell 6 needs to be tested, the sliding slider 2 moves the second probe assembly 5 away from the first probe assembly 4, allowing the battery cell 6 to be placed between the first probe assembly 4 and the second probe assembly 5. After the battery cell 6 is placed between the first probe assembly 4 and the second probe assembly 5, the clamping assembly 3 is used to clamp the battery cell 6. At this time, the first probe assembly 4 is in contact with the electrode at the first end of the battery cell 6, and the second probe assembly 5 is at a certain distance from the electrode at the second end of the battery cell 6 to facilitate the insertion of the battery cell 6.

[0092] Then, using the quick-clamp 7, the second support 51 is slid to bring the second probe assembly 5 closer to the first probe assembly 4 until the second probe assembly 5 rests against the electrode at the second end of the cell 6. In this way, the first probe assembly 4 and the second probe assembly 5 can be connected to the corresponding testing instruments to test the cell 6.

[0093] Furthermore, the quick-release clamp 7 can be used to slide the second support 51 so that the second probe assembly 5 abuts against the electrode at the second end of the cell 6 with a specified clamping force. Therefore, the clamping force of the second probe assembly 5 and the first probe assembly 4 on the electrode of the cell 6 can be adjusted according to testing requirements.

[0094] The slider 2 has a seventh groove 23, which is set along the direction from the first probe assembly 4 to the second probe assembly 5. The bottom of the second bracket 51 is slidably connected to the seventh groove 23, so that the second bracket 51 can slide along the seventh groove 23 to move closer to or away from the first probe assembly 4.

[0095] As an optional embodiment, such as Figure 3 and Figure 6As shown, the clamping assembly 3 includes a first mounting base 31, a first clamping plate 32, a second mounting base 33, and a second clamping plate 34. The first mounting base 31 is slidably connected to the slider 2, and a first slot 311 is formed in the first mounting base 31. A portion of the first clamping plate 32 is inserted into the first slot 311 and is perpendicular to the base 1. The second mounting base 33 is slidably connected to the slider 2, allowing the first mounting base 31 and the second mounting base 33 to move closer or further apart during sliding. The second mounting base 33 is slidably connected to the slider 2, and a second slot 331 is formed in the second mounting base 33. A portion of the second clamping plate 34 is inserted into the second slot 331 and is perpendicular to the base 1. The second mounting base 33 is slidably connected to the slider 2, allowing the first mounting base 31 and the second mounting base 33 to move closer or further apart during sliding.

[0096] When clamping the battery cell 6, first slide the slider 2 to ensure that the battery cell 6 can be placed between the first probe assembly 4 and the second probe assembly 5. Then slide the first mounting base 31 or the second mounting base 33 so that the first mounting base 31 or the second mounting base 33 are far apart, ensuring that the battery cell 6 can be placed between the first clamping plate 32 and the second clamping plate 34. After placing the battery cell 6 between the first clamping plate 32 and the second clamping plate 34, slide the first mounting base 31 or the second mounting base 33 so that the first clamping plate 32 and the second clamping plate 34 are close together to clamp the battery cell 6 and complete the clamping.

[0097] Specifically, a fifth sliding groove 22 is provided on the slider 2, and the fifth sliding groove 22 is arranged in a direction perpendicular to the direction in which the first probe assembly 4 and the second probe assembly 5 approach each other. A second sliding part is provided at the bottom of the first mounting base 31, and the second sliding part is slidably connected to the fifth sliding groove 22. A third sliding part is provided at the bottom of the second mounting base 33, and the third sliding part is slidably connected to the fifth sliding groove 22. Thus, when the third sliding part and the second sliding part slide along the fifth sliding groove 22, the first clamping plate 32 and the second clamping plate 34 approach or move away from each other.

[0098] A second locking hole 312 can also be provided on the first mounting base 31. After the locking bolt 531 is passed through the second locking hole 312 and the fifth sliding groove 22 in sequence, a locking nut 432 is fitted on the locking bolt 531. After sliding the first mounting base 31 to the designated position, tightening the locking nut 432 will press and fix the first mounting base 31 and the slider 2, preventing the first mounting base 31 from sliding relative to the slider 2.

[0099] A third locking hole 332 is provided on the second mounting base 33. After the locking bolt 531 is passed through the third locking hole 332 and the fifth sliding groove 22 in sequence, a locking nut 432 is fitted on the locking bolt 531. After sliding the second mounting base 33 to the designated position, tightening the locking nut 432 will press and fix the second mounting base 33 and the slider 2, preventing the second mounting base 33 from sliding relative to the slider 2.

[0100] In a further embodiment, the clamping assembly 3 further includes a mounting block 37, a third mounting base 35, and a fourth mounting base 36. The third mounting base 35 is slidably connected to the mounting block 37, and a third slot 351 is formed on the third mounting base 35. Part of the first clamping plate 32 is inserted into the third slot 351 and perpendicular to the base 1, while part of it is inserted into the first slot 311, making the installation of the first clamping plate 32 more stable.

[0101] The fourth mounting base 36 is slidably connected to the mounting block 37, and a fourth slot 361 is provided on the fourth mounting base 36. Part of the second clamping plate 34 is inserted into the fourth slot 361 and is perpendicular to the base 1, while part of it is inserted into the second slot 331, making the installation of the second clamping plate 34 more stable.

[0102] The mounting block 37 is slidably connected to the base 1, allowing the mounting block 37 to slide closer to or further away from the slider 2. Specifically, the bottom of the mounting block 37 is provided with a fourth sliding part, which is slidably connected to the fourth sliding groove 11, so that both the mounting block 37 and the slider 2 can slide along the fourth sliding groove 11, thereby allowing the mounting block 37 and the slider 2 to slide closer to or further away from each other.

[0103] A fourth locking hole 371 is provided on the mounting block 37. After the locking bolt 531 is passed through the fourth locking hole 371 and the fourth sliding groove 11 in sequence, a locking nut 432 is fitted on the locking bolt 531. After the mounting hole slider 2 is moved to the designated position, the locking nut 432 is tightened to press and fix the mounting hole and the base 1, preventing the mounting block 37 from sliding relative to the base 1.

[0104] After the mounting block 37 is slid to the appropriate position, the third mounting base 35 and the second mounting base 33 can move closer to or further away from each other when sliding relative to the mounting block 37. In this way, by simultaneously sliding the first mounting base 31 and the third mounting base 35, the first clamping plate 32 can be moved, and by simultaneously sliding the second mounting base 33 and the fourth mounting base 36, the second clamping plate 34 can be moved, thereby bringing the first clamping plate 32 and the second clamping plate 34 closer to or further away from each other.

[0105] Specifically, a sixth sliding groove 372 is provided on the mounting block 37, and the sixth sliding groove 372 is arranged in a direction perpendicular to the direction in which the first probe assembly 4 and the second probe assembly 5 approach each other. A fifth sliding part is provided at the bottom of the third mounting base 35, and the fifth sliding part is slidably connected to the sixth sliding groove 372. A sixth sliding part is provided at the bottom of the fourth mounting base 36, and the sixth sliding part is slidably connected to the sixth sliding groove 372. Thus, when the fifth and sixth sliding parts slide along the sixth sliding groove 372, the first clamping plate 32 and the second clamping plate 34 approach or move away from each other.

[0106] A fifth locking hole 352 can also be provided on the third mounting base 35. After the locking bolt 531 is passed through the fifth locking hole 352 and the sixth sliding groove 372 in sequence, a locking nut 432 is fitted on the locking bolt 531. After sliding the third mounting base 35 to the designated position, tightening the locking nut 432 will press and fix the third mounting base 35 and the mounting block 37, preventing the third mounting base 35 from sliding relative to the mounting block 37.

[0107] A sixth locking hole 362 is provided on the third mounting base 35. After the locking bolt 531 is passed through the sixth locking hole 362 and the sixth sliding groove 372 in sequence, a locking nut 432 is fitted on the locking bolt 531. After sliding the third mounting base 35 to the designated position, tightening the locking nut 432 will press and fix the third mounting base 35 and the mounting block 37, preventing the second mounting base 33 from sliding relative to the mounting block 37.

[0108] In an optional embodiment, the clamping assembly 3 further includes a second locking member 38. The second locking member 38 is detachably connected to the first clamping plate 32 and the second clamping plate 34, respectively. After the battery cell 6 is clamped using the first clamping plate 32 and the second clamping plate 34, the second locking member 38 connects the first clamping plate 32 and the second clamping plate 34, further increasing the reliability of clamping the battery cell 6. When it is necessary to replace the battery cell 6, the second locking member 38 can be removed.

[0109] The second locking member 38 can be a long bolt 531. After the long bolt 531 is passed through the first clamping plate 32 and the second clamping plate 34 in sequence, a nut 432 is screwed on. After the nut 432 is tightened, the second locking member 38 can be detachably connected to the first clamping plate 32 and the second clamping plate 34 respectively.

[0110] As an optional embodiment, the cell testing fixture also includes a base frame 8, on which the base 1 is connected. A module connector 81 is provided on the base frame 8, which is communicatively connected to the first probe assembly 4 and the second probe element. Connecting the module connector 81 to the testing instrument allows for testing, making wiring more convenient.

[0111] According to embodiments of this application, another aspect also provides a cell 6 testing device, such as... Figure 7 As shown, it includes multiple arbitrary cell testing fixtures. Thus, when using the cell testing equipment to test multiple cells simultaneously, each cell is clamped in its corresponding cell testing fixture. When replacing a cell, it is simply removed from its corresponding fixture without affecting the cells being tested in other fixtures, making it more convenient to use.

[0112] Although embodiments of this application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of this application, and such modifications and variations all fall within the scope defined by this application.

Claims

1. A battery cell testing fixture, characterized in that, include: Base (1); A clamping assembly (3) is connected to the base (1) and is used to clamp both sides of the battery cell (6); The first probe assembly (4) is connected to the base (1) and is used to abut against the electrode at the first end of the battery cell (6); The slider (2) is slidably connected to the base (1); The second probe assembly (5) is connected to the slider (2). The slider (2) can slide to move the second probe assembly (5) closer to or away from the first probe assembly (4). The second probe assembly (5) is used to contact the electrode at the second end of the battery cell (6).

2. The cell testing fixture according to claim 1, characterized in that, The first probe assembly (4) includes: The first bracket (41) is connected to the base (1); The first probe (42) is used to contact the electrode at the first end of the battery cell (6); A lifting device (43) is connected to the first bracket (41) and the lifting device (43) is connected to the first probe (42). The lifting device (43) is used to drive the first probe (42) to move closer to or away from the base (1).

3. The cell testing fixture according to claim 2, characterized in that, The lifting device (43) includes: The screw (431) has a first groove (411) on the first bracket (41) along a direction perpendicular to the base (1). The first probe (42) is slidably connected in the first groove (411). A through hole is formed between the side of the first bracket (41) away from the base (1) and the inner wall of the first groove (411). The screw (431) passes through the through hole and is connected to the first probe (42). A nut (432) is screwed onto the screw (431), and the nut (432) presses against the side of the first bracket (41) away from the base (1) under its own weight.

4. The cell testing fixture according to claim 1, characterized in that, The second probe assembly (5) includes: The second bracket (51) is connected to the slider (2); The second probe (52) is slidably connected to the second bracket (51); The first locking member (53) and the second probe member (52) are connected to the second bracket (51) through the first locking member (53). The first locking member (53) can switch between a first state and a second state. When the first locking member (53) is in the first state, the second probe member (52) can slide in a direction perpendicular to the slider (2). When the first locking member (53) is in the second state, the second probe member (52) is fixedly connected to the second bracket (51).

5. The cell testing fixture according to claim 4, characterized in that, The first locking element (53) includes: Bolt (531), the second bracket (51) is provided with a second groove (511) and a third groove (512) along the direction perpendicular to the base (1), and the second probe (52) is slidably connected in the second groove (511); The gasket (532) and the second probe (52) have threaded holes. The bolt (531) passes through the gasket (532) and the third slide groove (512) in sequence and is screwed into the threaded hole. When the first locking member (53) is in the first state, the bolt (531) can slide along the third slide groove (512). When the first locking member (53) is in the second state, the bolt (531) abuts against the side of the second bracket (51) away from the second probe (52) through the gasket (532).

6. The cell testing fixture according to claim 4, characterized in that, Also includes: The quick clamp (7) is slidably connected to the second bracket (51) and the slider (2). The quick clamp (7) is connected to the second bracket (51) and is used to drive the second bracket (51) to slide closer to or away from the first probe assembly (4).

7. The cell testing fixture according to claim 1, characterized in that, The clamping assembly (3) includes: The first mounting base (31) is slidably connected to the slider (2), and the first mounting base (31) is provided with a first slot (311); The first clamping plate (32) is partially inserted into the first slot (311); The second mounting base (33) is slidably connected to the slider (2), and the first mounting base (31) has a second slot (331). The first mounting base (31) and the second mounting base (33) can slide closer to or further away from each other. The second clamping plate (34) is partially inserted into the second slot (331). The first clamping plate (32) and the second clamping plate (34) are arranged parallel to each other and can slide close to or away from each other. The first clamping plate (32) and the second clamping plate (34) are used to clamp the battery cell (6).

8. The cell testing fixture according to claim 7, characterized in that, The clamping assembly (3) further includes: The mounting block (37) is slidably connected to the base (1), and the mounting block (37) can slide closer to or further away from the slider (2); The third mounting base (35) is slidably connected to the mounting block (37). The third mounting base (35) has a third slot (351) and the first clamping plate (32) is partially inserted into the third slot (351). The fourth mounting base (36) is slidably connected to the mounting block (37). The fourth mounting base (36) has a fourth slot (361). The second clamping plate (34) is partially inserted into the fourth slot (361). The third mounting base (35) and the fourth mounting base (36) can slide close to or away from each other.

9. The cell testing fixture according to claim 7, characterized in that, The clamping assembly (3) further includes: The second locking member (38) is detachably connected to the first clamping plate (32) and the second clamping plate (34), respectively.

10. A battery cell testing device, characterized in that, It includes the cell testing fixtures described in any one of claims 1-9.

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