Battery cell test compression device

Abstract

The utility model relates to a kind of electric core test compression devices, belong to electric core test technical field, to overcome the structure of electric core test compression device in relevant technology is more complex, the problem of higher manufacturing cost.The electric core test compression device includes first compression structure and second compression structure, first compression structure includes first compression piece and second compression piece and first adjusting piece, first compression piece and second compression piece form the accommodation space of the electric core to be measured, and first adjusting piece is used to adjust the interval of first compression piece and second compression piece.Second compression structure includes third compression piece, pressure test unit and second adjusting piece connected between first compression piece and third compression piece, third compression piece is located in the side of second compression piece away from first compression piece, pressure test unit is arranged between second compression piece and third compression piece, and second adjusting piece is used to adjust the interval of first compression piece and third compression piece, so that third compression piece is compressed by pressure test unit and second compression piece.

Description

Technical Field

[0001] This utility model relates to the field of battery cell testing technology, and specifically to a battery cell testing clamping device. Background Technology

[0002] During charging and discharging, the cells in automotive power batteries often expand in volume, generating external expansion forces. These changes in cell volume and expansion forces negatively impact the cycle life of the power battery. To improve the accuracy of test results during cell testing, the testing device needs to apply a certain clamping force to the cells to simulate the clamping forces experienced by the cells in real-world application scenarios. Related technologies provide a cell clamping fixture to improve the accuracy of test results, including a base, a drive assembly, a fixing assembly, and a moving assembly. The fixing assembly includes a fixing plate and a pressure sensor, while the moving assembly includes a movable plate and a displacement sensor. During testing, the movable plate is pushed by the drive component, pressing the cell firmly against the fixing plate. The displacement sensor detects the horizontal displacement of the movable plate, and the pressure sensor detects the clamping force, feeding the data back to the drive assembly to control the movement of the movable plate.

[0003] However, while the device can effectively compress the battery cell by using a combination of displacement and pressure sensors, its structure is relatively complex and its manufacturing cost is high. Utility Model Content

[0004] The purpose of this utility model is to provide a battery cell testing and clamping device to overcome the problems of complex structure and high manufacturing cost of battery cell testing and clamping devices in related technologies.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] According to a first aspect of this application, this application provides a battery cell testing clamping device, which includes a first clamping structure and a second clamping structure. The first clamping structure includes a first clamping member and a second clamping member, and a first adjusting member connected between the first clamping member and the second clamping member. The first clamping member and the second clamping member are arranged opposite to each other along a first direction and are spaced apart to form an accommodating space for accommodating the battery cell to be tested. The first adjusting member is used to adjust the distance between the first clamping member and the second clamping member.

[0007] The second clamping structure includes a third clamping member, a pressure testing unit, and a second adjusting member. The third clamping member is located on the side of the second clamping member away from the first clamping member along a first direction. The pressure testing unit is located between the second clamping member and the third clamping member. The second adjusting member is connected between the first clamping member and the third clamping member. The second adjusting member is used to adjust the distance between the first clamping member and the third clamping member so that the third clamping member is clamped by the pressure testing unit and the second clamping member.

[0008] According to the above-mentioned technical means, during the cell testing process, when the distance between the first and third clamping components is adjusted by the second adjusting component, with the assistance of the pressure testing unit, the clamping force between the second and third clamping components can be adjusted to a pressure value that meets the cell testing requirements. Then, the distance between the first and second clamping components is adjusted by the first adjusting component, so that the clamping force between the first and second clamping components gradually increases, while the clamping force between the second and third clamping components gradually decreases. In this way, when the clamping force between the second and third clamping components is unloaded, the clamping force between the first and second clamping components can be loaded to meet the cell testing requirements, thereby ensuring effective clamping of the cell. Moreover, the device has a simple structure and low manufacturing cost.

[0009] In one possible implementation, both the third clamping member and the pressure testing unit can be detachably connected to the second adjusting member.

[0010] Based on the above technical means, once it is ensured that the clamping force applied to the battery cell by the first clamping member and the second clamping member can meet the testing requirements of the battery cell, the second clamping structure can be separated from the current first clamping structure. In this way, the second clamping structure can perform the same clamping operation on another first clamping structure, thereby increasing the usage frequency of the third clamping member and pressure testing unit, etc. In addition, when multiple or multiple groups of battery cells need to be clamped for testing, it is not necessary to equip a corresponding number of third clamping members and pressure testing units, which helps to reduce testing costs.

[0011] In one possible implementation, the pressure testing unit is located on the third clamping member.

[0012] Based on the above technical means, the pressure testing unit and the third clamping component can be disassembled and assembled as a whole, which helps to improve the disassembly and assembly efficiency.

[0013] In one possible implementation, the second adjusting member is rotatably connected to the first clamping member. When the second adjusting member rotates relative to the first clamping member in a first rotation direction, it can drive the third clamping member to move toward the second clamping member in a first direction, so that the third clamping member is pressed by the pressure testing unit and the second clamping member.

[0014] Based on the above-mentioned technical means, by rotating the second adjusting component to precisely control the movement distance of the third clamping component, the clamping force between the first and third clamping components can be finely adjusted, so that the operator can accurately set the required clamping force according to the specific testing requirements of the battery cell, and ensure the consistency and accuracy of the testing conditions.

[0015] In one possible implementation, along the arrangement direction of the first and third clamping members, the second adjusting member includes a second smooth rod segment and a second threaded segment arranged sequentially. The first clamping member is provided with a second through hole, and the third clamping member is provided with a second threaded hole. The second through hole and the second threaded hole are arranged opposite to each other. The second smooth rod segment passes through the second through hole so that the second adjusting member is rotatably connected to the first clamping member. The second threaded segment is connected to the second threaded hole so that the second adjusting member can drive the third clamping member to move toward the first clamping structure along the first direction.

[0016] According to the aforementioned technical means, the second smooth rod section passes through the second through hole of the first clamping member, providing a rotational support point for the second adjusting member. This ensures that the second adjusting member will not deviate or wobble during rotation, guaranteeing the smoothness of the driving process. Furthermore, a threaded connection is used to achieve precise adjustment of the position of the third clamping member. Because the threaded connection has a self-locking characteristic, this ensures that after adjustment, the third clamping member can remain stable in the set position, thereby ensuring the accuracy and stability of the clamping force. In addition, the second adjusting member also serves as a guide, eliminating the need for a separate guide structure, which also simplifies the structure and reduces costs.

[0017] In one possible implementation, the second adjusting member includes two sets of second adjusting rods spaced apart along a second direction, each set having at least one set of second adjusting rods, and the first and second directions intersecting.

[0018] Based on the aforementioned technical means, by arranging two sets of second adjusting rods at intervals in the second direction, a more balanced force distribution can be provided. This arrangement helps ensure that the third clamping component remains stable when subjected to clamping force, reducing skewing or instability caused by single-point force application, thereby improving the operational stability and reliability of the entire device.

[0019] In one possible implementation, the first adjusting member is rotatably connected to the first pressing member. When the first adjusting member rotates relative to the first pressing member in a first rotation direction, it can drive the second pressing member to move toward the first pressing member, thereby reducing the distance between the first pressing member and the second pressing member.

[0020] According to the aforementioned technical means, by rotating the first adjusting member to drive the second clamping member to move, the distance between the first and second clamping members can be finely adjusted, thereby enabling precise adjustment of the clamping force applied to the battery cell under test within the accommodating space. This method allows for accurate setting of pressure values ​​according to testing requirements, ensuring that each battery cell is tested under consistent and appropriate conditions. Furthermore, as the second clamping member moves towards the first clamping member along the first direction, the clamping force between the second and third clamping members can be simultaneously unloaded, simplifying operation and improving testing efficiency.

[0021] In one possible implementation, along the arrangement direction of the first clamping member and the second clamping member, the first adjusting member includes a first smooth rod segment and a first threaded segment arranged in sequence, the first clamping member is provided with a first through hole, the second clamping member is provided with a first threaded hole, and the first through hole and the first threaded hole are arranged opposite to each other.

[0022] The first smooth rod section passes through the first through hole, so that the first adjusting member is rotatably connected to the first clamping member, and the first threaded section is connected to the first threaded hole, so that the first adjusting member can drive the second clamping member to move toward the first clamping member.

[0023] According to the aforementioned technical means, the first smooth rod section passes through the first through hole of the first clamping member, providing a rotational support point for the first adjusting member and ensuring that the first adjusting member will not deviate or wobble during rotation. Through the cooperation of the first threaded section with the first threaded hole on the second clamping member, very precise adjustment of the clamping force applied to the battery cell under test within the accommodating space can be achieved. Because the threaded connection has a self-locking characteristic, this ensures that after adjustment, the second clamping member can remain stable in the set position, thereby guaranteeing the accuracy and consistency of the clamping force during testing. Furthermore, the first adjusting member also serves as a guide, eliminating the need for a separate guide structure, which also simplifies the structure and reduces costs.

[0024] In one possible implementation, the first adjusting member includes multiple sets of first adjusting rods spaced apart along a second direction, each set having at least two first adjusting rods, and the at least two first adjusting rods spaced apart along a third direction, with the first direction, the second direction, and the third direction intersecting each other.

[0025] Based on the aforementioned technical means, a three-dimensional support structure can be formed by arranging multiple first adjusting rods at intervals along the second and third directions. This design enhances the overall rigidity and stability of the clamping assembly, ensuring that the entire system remains stable when applying or releasing clamping force, reducing the risk of displacement or deformation due to single-point force. Furthermore, the design of multiple first adjusting rods allows for a more uniform distribution of pressure on the cell surface. Compared to single-point force application, this layout helps avoid cell damage caused by localized stress concentration, improving the safety and reliability of the test.

[0026] In one possible implementation, the first adjusting member and the second adjusting member are spaced apart along a second direction; and / or, the first adjusting member and the second adjusting member are spaced apart along a third direction, wherein the first direction, the second direction and the third direction intersect each other.

[0027] Based on the above technical means, it is beneficial to optimize the layout of the cell testing clamping device and to ensure the structural strength of the first clamping component, the second clamping component, etc.

[0028] In one possible implementation, the second adjusting member further includes a pressure testing unit located between the third clamping member and the clamping assembly along a first direction, and used to detect the clamping force between the clamping assembly and the third clamping member; the pressure testing unit is detachably connected to the third clamping member.

[0029] Based on the aforementioned technical means, the pressure testing unit can monitor and provide feedback on the actual clamping force between the clamping assembly and the third clamping component in real time. This allows the unit to also reflect the magnitude of the clamping force within the accommodating space of the clamping assembly during the unloading process of the clamping force between the clamping assembly and the third clamping component. This enables the operator to precisely adjust the clamping force according to the testing requirements, ensuring that each cell is tested under ideal conditions. Real-time monitoring helps improve the accuracy and consistency of the test results.

[0030] The beneficial effects of this utility model are:

[0031] (1) The battery cell testing and clamping device of this application can effectively clamp the battery cell without the need for other testing components. It has a simple structure and low manufacturing cost.

[0032] (2) The second clamping structure of this application can be disassembled from the first clamping structure and shared among multiple first clamping structures, reducing the need for additional second clamping structures. In this way, when multiple or multiple groups of cells need to be tested, the usage frequency of the second clamping structure can be increased, which is beneficial to reducing testing costs.

[0033] (3) This application enables fine adjustment of the clamping force applied to the cell under test, allowing the pressure value to be accurately set according to the test requirements, and ensuring that each cell is tested under consistent and appropriate conditions. Attached Figure Description

[0034] Figure 1 A front view of a cell testing and clamping device provided in some embodiments of this application;

[0035] Figure 2 A front view illustrating the interaction between a battery cell testing clamping device and a battery cell under test, provided for some embodiments of this application;

[0036] Figure 3 A top view of a cell testing and clamping device provided in some embodiments of this application;

[0037] Figure 4 A top view illustrating the interaction between a battery cell testing clamping device and a battery cell under test, provided for some embodiments of this application;

[0038] Figure 5 A front view of a first clamping member provided for some embodiments of this application;

[0039] Figure 6 A front view of a second clamping member provided for some embodiments of this application;

[0040] Figure 7 A front view of a third clamping member provided for some embodiments of this application.

[0041] Figure label:

[0042] 1000. Cell testing and clamping device;

[0043] 1. First clamping structure; 10. Clamping assembly; 100. First clamping component; 200. Second clamping component; 520. First adjusting component; 5201. First smooth rod section; 5202. First threaded section;

[0044] 2. Second clamping structure; 300. Pressure testing unit; 400. Third clamping component; 510. Second adjusting component; 5101. Second smooth rod section; 5102. Second threaded section;

[0045] 3. Storage space;

[0046] 710, First through hole; 720, First threaded hole; 730, Second through hole; 740, Second threaded hole;

[0047] 600, gasket;

[0048] 2000, the battery cell to be tested. Detailed Implementation

[0049] To enable those skilled in the art to better understand the technical solutions of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0050] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0051] Next, see Figures 1-7 The following describes the cell testing and clamping device 1000 provided in some embodiments of this application.

[0052] In some embodiments, see Figures 1-4This application provides a battery cell testing clamping device 1000, which includes a first clamping structure 1 and a second clamping structure 2. The first clamping structure 1 includes a first clamping member 100 and a second clamping member 200, and a first adjusting member 520 connected between the first clamping member 100 and the second clamping member 200. The first clamping member 100 and the second clamping member 200 are arranged opposite to each other along a first direction and are spaced apart to form an accommodating space 3. The accommodating space 3 is used to accommodate the battery cell 2000 to be tested. The first adjusting member 520 is used to adjust the distance between the first clamping member 100 and the second clamping member 200.

[0053] The second clamping structure 2 includes a third clamping member 400, a pressure testing unit 300, and a second adjusting member 510. The third clamping member 400 is located along a first direction on the side of the second clamping member 200 away from the first clamping member 100. The pressure testing unit 300 is disposed between the second clamping member 200 and the third clamping member 400. The second adjusting member 510 is connected between the first clamping member 100 and the third clamping member 400. The second adjusting member 510 is used to adjust the distance between the first clamping member 100 and the third clamping member 400 so that the third clamping member 400 is clamped by the pressure testing unit 300 and the second clamping member 200.

[0054] Based on this, for the convenience of the description of the embodiments below, for the cell testing clamping device 1000, the arrangement direction of the first clamping member 100, the second clamping member 200 and the third clamping member 400 is defined as the first direction (as shown in the direction e1 in the figure), the length direction of the first clamping member 100, the second clamping member 200 and the third clamping member 400 is defined as the second direction (as shown in the direction e2 in the figure), and the width direction of the first clamping member 100, the second clamping member 200 and the third clamping member 400 is defined as the third direction (as shown in the direction e3 in the figure).

[0055] For example, the first clamping member 100, the second clamping member 200 and the third clamping member 400 are all formed as plate-shaped structures, and the first clamping member 100, the second clamping member 200 and the third clamping member 400 can be formed as rectangular, circular or irregular plate-shaped, and this application does not specifically limit them.

[0056] For example, along the arrangement direction of the first clamping member 100 and the second clamping member 200, the relative positions of the first clamping member 100 and the first adjusting member 520 are fixed, while the second clamping member 200 is movable relative to the first adjusting member 520.

[0057] For example, along the arrangement direction of the first clamping member 100 and the third clamping member 400, the relative positions of the first clamping member 100 and the first adjusting member 520 are fixed, and the third adjusting member is movable relative to the second adjusting member 510.

[0058] The pressure testing unit 300 can monitor and provide feedback on the actual clamping force between the second clamping member 200 and the third clamping member 400 in real time. This allows the clamping force of the second clamping member 200 and the third clamping member 400 to be reflected in real time during the loading and unloading of the clamping force between them. In turn, it can also indirectly reflect the magnitude of the clamping force within the accommodating space 3. This enables the operator to precisely adjust the clamping force according to the testing requirements, ensuring that each cell is tested under ideal conditions. Real-time monitoring helps improve the accuracy and consistency of the test results.

[0059] Based on this, during the cell testing process, the distance between the first clamping member 100 and the third clamping member 400 is adjusted by the second adjusting member 510. The third clamping member 400 is pressed by the pressure testing unit 300 and the second clamping member 200, which can change the clamping force between the second clamping member 200 and the third clamping member 400. With the assistance of the pressure testing unit 300, the clamping force between the second clamping member 200 and the third clamping member 400 can be adjusted to a pressure value that meets the requirements of the cell testing by detecting the clamping force value through the pressure testing unit 300. Then, the distance between the first clamping member 100 and the second clamping member 200 is adjusted by the first adjusting member 520. The second clamping member 200 presses against the battery cell 2000 under test and the first clamping member 100, so that the clamping force between the first clamping member 100 and the second clamping member 200 gradually increases, while the clamping force between the second clamping member 200 and the third clamping member 400 gradually decreases. In this way, when the clamping force between the second clamping member 200 and the third clamping member 400 is unloaded, and the clamping force value displayed by the pressure testing unit 300 is zero, the clamping force between the first clamping member 100 and the second clamping member 200 can be loaded to meet the battery cell testing requirements, thereby ensuring effective clamping of the battery cell. Moreover, this battery cell testing clamping device 1000 can achieve effective clamping of the battery cell without the need for other detection components, with a simple structure and low manufacturing cost.

[0060] Based on the above, the adjustable spacing between the first clamping member 100 and the second clamping member 200 increases the flexibility of the entire cell testing clamping device 1000. When facing cells of different sizes or requiring different clamping forces, there is no need to change different clamps or components. The pressure applied to the cell can also be flexibly changed, thus improving the adaptability of the equipment.

[0061] In some embodiments, see Figures 1-2 Both the third clamping member 400 and the pressure testing unit 300 are detachably connected to the second adjusting member 510. The third clamping member 400 and the pressure testing unit 300 are located at the end of the second adjusting member 510 away from the first clamping member 100.

[0062] For example, the third clamping member 400 and the pressure testing unit 300 are both directly connected to the second adjusting member 510; or, the third clamping member 400 is connected to the second adjusting member 510, and the pressure testing unit 300 is disposed on the third clamping member 400, so that the pressure testing unit 300 is indirectly connected to the second adjusting member 510.

[0063] Based on this, since the third clamping member 400 and the pressure testing unit 300 are detachably connected to the second adjusting member 510, once it is ensured that the clamping force applied to the battery cell between the first clamping member 100 and the second clamping member 200 can meet the battery cell's testing requirements, the third clamping member 400 and the pressure testing unit 300 can be detached from the second adjusting member 510, so that the second clamping structure 2 is separated from the current first clamping structure 1. In this way, the second clamping structure 2 can perform the same clamping operation on another first clamping structure 1, thereby increasing the usage frequency of the third clamping member 400 and the pressure testing unit 300, etc., and when multiple or multiple groups of battery cells need to be clamped for testing, it is not necessary to equip a corresponding number of third clamping members 400 and pressure testing units 300, which helps to reduce testing costs.

[0064] In some embodiments, see Figures 1-4 The pressure testing unit 300 is disposed on the third clamping member 400. Optionally, the pressure testing unit 300 is detachably connected to the third clamping member 400. For example, the pressure testing unit 300 is connected to the third clamping member 400 by fasteners. For instance, the third clamping member 400 is provided with a third threaded hole, and the pressure testing unit 300 is disposed on the third clamping member 400 by bolts and nuts. This helps to improve the installation stability and reliability of the pressure testing unit 300.

[0065] Based on this, the pressure testing unit 300 and the third clamping component 400 can be disassembled and assembled as a whole, which helps to improve the efficiency of disassembly and assembly.

[0066] In some embodiments, see Figures 1-4 The second adjusting member 510 is rotatably connected to the first pressing member 100. When the second adjusting member 510 rotates relative to the first pressing member 100 in the first rotation direction (see the v1 direction in the figure), it can drive the third pressing member 400 to move toward the second pressing member 200 in the first direction, so that the third pressing member 400 is pressed by the pressure testing unit 300 and the second pressing member 200.

[0067] For example, the second adjusting member 510 is rotatably connected to the first pressing member 100. When the second adjusting member 510 rotates in the first rotation direction, the distance between the first pressing member 100 and the third pressing member 400 decreases; when the second adjusting member 510 rotates in the second rotation direction (see the direction v2 in the figure), the distance between the first pressing member 100 and the third pressing member 400 increases. The first rotation direction and the second rotation direction are opposite.

[0068] Based on this, the second adjusting member 510 provides a driving force to the third clamping member 400. By rotating the second adjusting member 510, the movement distance of the third clamping member 400 can be precisely controlled. This allows for fine adjustment of the clamping force between the second clamping member 200 and the third clamping member 400, so that the operator can accurately set the required clamping force according to the specific testing requirements of the battery cell, ensuring the consistency and accuracy of the testing conditions.

[0069] In some embodiments, see Figures 1-2 Along the arrangement direction of the first clamping member 100 and the third clamping member 400, the second adjusting member 510 includes a second smooth rod section 5101 and a second threaded section 5102 arranged sequentially. Figure 5 and Figure 7 The first clamping member 100 is provided with a second through hole 730, and the third clamping member 400 is provided with a second threaded hole 740. The second through hole 730 and the second threaded hole 740 are arranged opposite to each other. The second smooth rod section 5101 passes through the second through hole 730 so that the second adjusting member 510 is rotatably connected to the first clamping member 100. The second threaded section 5102 is connected to the second threaded hole 740 so that the second adjusting member 510 can drive the third clamping member 400 to move toward the first clamping structure 1 in a first direction.

[0070] Based on this, the second smooth rod section 5101 passes through the second through hole 730 of the first clamping member 100, providing a rotational support point for the second adjusting member 510. This ensures that the second adjusting member 510 will not deviate or wobble during rotation, guaranteeing the smoothness of the driving process. Furthermore, a threaded connection is used to achieve precise adjustment of the position of the third clamping member 400. Because the threaded connection has a self-locking characteristic, this ensures that after adjustment, the third clamping member 400 can remain stable in the set position, thereby ensuring the accuracy and stability of the clamping force. In addition, the second adjusting member 510 also serves as a guide, eliminating the need for a separate guide structure, which also simplifies the structure and reduces costs.

[0071] In some implementations, see Figures 1-2 and combined Figure 6The second clamping member 200 is also provided with a second through hole 730. The second through hole 730 of the second clamping member 200 and the third threaded hole of the third clamping member 400 are arranged opposite to each other. The second through hole 730 is used to avoid the second adjusting member 510, and the second through hole 730 can also provide a rotation fulcrum for the second adjusting member 510.

[0072] In some embodiments, see Figures 1-2 The second adjusting member 510 also includes a second operating part connected to the second guide rod section 5101. The diameter of the second operating part is larger than the diameter of the second guide rod section 5101. One end of the second operating part facing the first pressing member 100 abuts against the first pressing member 100. The operator or control mechanism can rotate the second adjusting member 510 through the second operating part.

[0073] In some embodiments, see Figures 1-2 The cell testing and clamping device 1000 also includes a gasket 600, which is disposed between the second operating part and the first clamping member 100.

[0074] In some embodiments, see Figures 3-4 The second adjusting member 510 includes two sets of second adjusting rods spaced apart along the second direction, each set having at least one second adjusting rod, and the first and second directions intersecting.

[0075] For example, each set of second adjustment members 510 includes a second adjustment rod. The two sets of second adjustment rods are located close to both ends of the first clamping member 100 and the third clamping member 400 along a second direction to avoid interfering with the setting of the battery cell 2000 under test.

[0076] Based on this, by arranging two sets of second adjusting rods at intervals in the second direction, the cooperation of the two sets of second adjusting rods can provide a more balanced force distribution. This layout helps ensure that the third clamping member 400 remains stable when subjected to clamping force, reducing the phenomenon of skewing or instability caused by single-point force application, thereby ensuring the uniformity of clamping force between the third clamping member 400 and the second clamping member 200, and improving the operational stability and reliability of the entire device.

[0077] In some embodiments, see Figures 5-7 Correspondingly, the first clamping member 100 and the second clamping member 200 include two sets of second through holes 730 spaced apart along the second direction, and the third clamping member 400 includes two sets of second threaded holes 740 spaced apart along the second direction.

[0078] In some embodiments, see Figures 1-4The first adjusting member 520 is rotatably connected to the first pressing member 100. When the first adjusting member 520 rotates relative to the first pressing member 100 in the first direction, it can drive the second pressing member 200 to move toward the first pressing member 100 in the first direction to load the pressing force in the accommodating space 3 and unload the pressing force between the second pressing member 200 and the third pressing member 400.

[0079] For example, the first adjusting member 520 is rotatably connected to the first pressing member 100. When the first adjusting member 520 rotates in the first rotation direction, the distance between the first pressing member 100 and the second pressing member 200 decreases; when the first adjusting member 520 rotates in the second rotation direction, the distance between the first pressing member 100 and the third pressing member 400 increases.

[0080] Based on this, the first adjusting member 520 provides a driving force for the second clamping member 200. By rotating the first adjusting member 520, the second clamping member 200 is driven to move, and the distance between the first clamping member 100 and the second clamping member 200 changes. This allows for fine adjustment of the clamping force applied to the battery cell 2000 under test within the accommodating space 3. This method allows for accurate setting of pressure values ​​according to testing requirements, ensuring that each battery cell 2000 under test is tested under consistent and appropriate conditions. Furthermore, as the second clamping member 200 moves towards the first clamping member 100 along the first direction, the clamping force between the second clamping member 200 and the third clamping member 400 can be simultaneously unloaded, simplifying operation and improving testing efficiency.

[0081] In some embodiments, see Figures 1-2 The first adjusting member 520 includes a first smooth rod section 5201 and a first threaded section 5202 arranged along a first direction. And combined with... Figures 5-6 The first clamping member 100 is provided with a first through hole 710, and the second clamping member 200 is provided with a first threaded hole 720. The first through hole 710 and the first threaded hole 720 are opposite to each other in a first direction.

[0082] The first smooth rod section 5201 passes through the first through hole 710 so that the first adjusting member 520 is rotatably connected to the first clamping member 100. The first threaded section 5202 is connected to the first threaded hole 720 so that the first adjusting member 520 can drive the first and third clamping members 400 to move toward the first clamping member 100 in the first direction.

[0083] Based on this, the first smooth rod section 5201 passes through the first through hole 710 of the first clamping member 100, providing a rotational support point for the first adjusting member 520, ensuring that the first adjusting member 520 will not deviate or wobble during rotation. Through the engagement of the first threaded section 5202 with the first threaded hole 720 on the second clamping member 200, very precise adjustment of the clamping force applied to the battery cell 2000 under test within the accommodating space 3 can be achieved. Because the threaded connection has a self-locking characteristic, this ensures that after adjustment, the second clamping member 200 can remain stable in the set position, thereby guaranteeing the accuracy and consistency of the clamping force during testing. Furthermore, the first adjusting member 520 also serves as a guide, eliminating the need for a separate guide structure, which also simplifies the structure and reduces costs.

[0084] In some implementations, see Figures 1-2 The length of the first adjusting member 520 is less than the length of the second adjusting member 510.

[0085] In some embodiments, see Figures 1-2 The first adjusting member 520 also includes a first operating part connected to the first guide rod section 5201. The diameter of the first operating part is larger than the diameter of the first guide rod section 5201. One end of the first operating part facing the first pressing member 100 abuts against the first pressing member 100. The operator or control mechanism can rotate the second adjusting member 510 through the operating part.

[0086] In some embodiments, see Figures 1-2 The gasket 600 is also located between the first operating part and the first clamping member 100.

[0087] In some embodiments, see Figure 1 and combined Figures 5-6 The first adjusting member 520 includes multiple sets of first adjusting rods spaced apart along the second direction. Each set of first adjusting rods has at least two rods, and the at least two first adjusting rods are spaced apart along the third direction. The first direction, the second direction, and the third direction intersect each other.

[0088] For example, each set of first adjusting members 520 includes two first adjusting rods spaced apart along a third direction. The two sets of first adjusting rods are close to both ends of the first clamping member 100 and the second clamping member 200 along a second direction to avoid interfering with the setting of the battery cell 2000 under test.

[0089] For example, each set of first adjustment members 520 includes two or more second adjustment rods spaced apart along a third direction.

[0090] Based on this, a three-dimensional support structure can be formed by arranging multiple first adjusting rods at intervals along the second and third directions. This design enhances the overall rigidity and stability of the clamping assembly 10, ensuring that the entire system remains stable when applying or releasing clamping force, reducing the risk of displacement or deformation due to single-point force. Furthermore, the design of multiple first adjusting rods allows for a more uniform distribution of pressure on the cell surface. Compared to single-point force application, this layout helps avoid cell damage caused by localized stress concentration, improving the safety and reliability of the test.

[0091] In some embodiments, see Figures 5-6 Correspondingly, the first clamping member 100 includes two sets of first through holes 710 spaced apart along the second direction, with each set of first through holes 710 consisting of two spaced apart along the third direction. The second clamping member 200 includes two sets of first threaded holes 720 spaced apart along the second direction, with each set of first threaded holes 720 consisting of two spaced apart along the third direction.

[0092] In some embodiments, see Figure 1 and combined Figures 5-7 The first adjusting member 520 and the second adjusting member 510 are spaced apart along the second direction.

[0093] For example, the first adjusting member 520 includes two sets of first adjusting rods spaced apart along the second direction, and the second adjusting member 510 includes two sets of second adjusting rods spaced apart along the second direction, with the first adjusting rods and the second adjusting rods being spaced apart in the second direction.

[0094] Based on this, it is beneficial to optimize the layout of the cell testing clamping device 1000, and to ensure the structural strength of the first clamping member 100, the second clamping member 200, etc.

[0095] In some embodiments, see Figure 1 and combined Figures 5-7 The first adjusting member 520 and the second adjusting member 510 are spaced apart along a third direction, and the first direction, the second direction and the third direction intersect each other.

[0096] For example, the first adjusting member 520 includes two sets of first adjusting rods spaced apart along the second direction, each set of first adjusting rods consisting of two spaced apart along the third direction, and the second adjusting member 510 includes two sets of second adjusting rods spaced apart along the second direction, each set of second adjusting rods consisting of one rod, the second adjusting rod being located between the two first adjusting rods along the third direction, and the second adjusting rod being spaced apart from the first adjusting rods along the second direction.

[0097] Based on this, it is beneficial to optimize the layout of the cell testing clamping device 1000, and to ensure the structural strength of the first clamping member 100, the second clamping member 200, etc.

[0098] For example, the operation procedure of the cell testing pressure device may include the following steps:

[0099] S1, Install the first clamping structure 1. Position the first clamping member 100 and the second clamping member 200, and align the corresponding holes of the first through hole 710 of the first clamping member 100 and the first threaded hole 720 of the second clamping member 200. Align the second through hole 730 of the first clamping member 100 and the second through hole 730 of the second clamping member 200 with their corresponding holes. Pass the first adjusting member 520 through the first through hole 710 of the first clamping member 100 and screw it into the first threaded hole 720 of the second clamping member 200. Tighten it initially for alignment (do not tighten at this time) so that the battery cell 2000 to be tested is placed in the accommodating space 3 between the first clamping member 100 and the second clamping member 200.

[0100] S2, Install the pressure test unit 300. Install the pressure test unit 300 onto the third clamping member 400 and secure it to the third clamping member 400 using bottom bolts and nuts.

[0101] S4, Install the second clamping structure 2. Align the corresponding holes of the second threaded hole 740 of the third clamping member 400 and the second through holes 730 of the first clamping member 100 and the second clamping member 200. Pass the second adjusting member 510 through the second through hole 730 of the first clamping member 100 in sequence, then through the second through hole 730 of the second clamping member 200, and screw it into the second threaded hole 740 on the third clamping member 400 to adjust the clamping force between the first clamping member 100 and the third clamping member 400.

[0102] S5, Adjust the clamping force to control the pre-tightening state. By tightening the second adjusting member 510, the distance between the first clamping member 100 and the third clamping member 400 is adjusted, thereby adjusting the clamping force between the first clamping member 100 and the third clamping member 400, so that the second clamping member 200 applies appropriate pressure to the pressure testing unit 300 to achieve the set pre-tightening state. The pressure data displayed in real time is read by the pressure testing unit 300 to ensure that the required pre-tightening force for the battery cell is achieved.

[0103] S6. Adjust the clamping force to meet the cell testing requirements. Gradually tighten the first adjusting member 520 to gradually increase the clamping force between the first clamping member 100 and the second clamping member 200, while simultaneously decreasing the clamping force between the first clamping member 100 and the third clamping member 400. Continue adjusting until the pressure applied by the second adjusting member 510 is completely unloaded, and the real-time display value of the pressure testing unit 300 drops to zero, ensuring that the first clamping member 100 and the second clamping member 200 bear the full clamping force.

[0104] S7, Disconnect the third clamping member 400 from the pressure testing unit 300. After confirming that the pressure displayed by the pressure testing unit 300 is zero, safely disconnect the connection between the third clamping member 400 and the second adjusting member 510. Remove the fixing bolts and nuts of the pressure testing unit 300 and the third clamping member 400 so that the pressure testing unit 300 and the third clamping member 400 can be used for other clamping operations, thereby reducing testing costs.

[0105] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A cell testing and clamping device (1000), characterized in that, include: The first clamping structure (1) includes a first clamping member (100) and a second clamping member (200) and a first adjusting member (520) connected between the first clamping member (100) and the second clamping member (200). The first clamping member (100) and the second clamping member (200) are arranged opposite to each other along a first direction and are spaced apart to form an accommodating space (3). The accommodating space (3) is used to accommodate the battery cell (2000) to be tested. The first adjusting member (520) is used to adjust the distance between the first clamping member (100) and the second clamping member (200). The second clamping structure (2) includes a third clamping member (400), a pressure testing unit (300), and a second adjusting member (510). The third clamping member (400) is located on the side of the second clamping member (200) away from the first clamping member (100) along the first direction. The pressure testing unit (300) is disposed between the second clamping member (200) and the third clamping member (400). The second adjusting member (510) is connected between the first clamping member (100) and the third clamping member (400). The second adjusting member (510) is used to adjust the distance between the first clamping member (100) and the third clamping member (400) so that the third clamping member (400) is clamped by the pressure testing unit (300) and the second clamping member (200).

2. The cell testing and clamping device (1000) according to claim 1, characterized in that, Both the third clamping member (400) and the pressure testing unit (300) are detachably connected to the second adjusting member (510).

3. The cell testing and clamping device (1000) according to claim 2, characterized in that, The pressure testing unit (300) is located on the third clamping member (400).

4. The cell testing and clamping device (1000) according to claim 1, characterized in that, The second adjusting member (510) is rotatably connected to the first pressing member (100). When the second adjusting member (510) rotates relative to the first pressing member (100) in a first rotation direction, it can drive the third pressing member (400) to move toward the second pressing member (200) so that the third pressing member (400) is pressed by the pressure testing unit (300) and the second pressing member (200).

5. The cell testing and clamping device (1000) according to claim 4, characterized in that, Along the arrangement direction of the first clamping member (100) and the third clamping member (400), the second adjusting member (510) includes a second smooth rod section (5101) and a second threaded section (5102) arranged in sequence. The first clamping member (100) is provided with a second through hole (730), and the third clamping member (400) is provided with a second threaded hole (740). The second through hole (730) and the second threaded hole (740) are arranged opposite to each other. The second smooth rod segment (5101) passes through the second through hole (730) so that the second adjusting member (510) is rotatably connected to the first clamping member (100), and the second threaded segment (5102) is connected to the second threaded hole (740) so that the second adjusting member (510) can drive the third clamping member (400) to move toward the first clamping structure (1) along the first direction.

6. The cell testing and clamping device (1000) according to claim 4, characterized in that, The second adjusting member (510) includes two sets of second adjusting rods spaced apart along the second direction, each set having at least one second adjusting rod, and the first direction and the second direction intersect.

7. The cell testing and clamping device (1000) according to claim 1, characterized in that, The first adjusting member (520) is rotatably connected to the first pressing member (100). When the first adjusting member (520) rotates relative to the first pressing member (100) in a first rotation direction, it can drive the second pressing member (200) to move toward the first pressing member (100) to reduce the distance between the first pressing member (100) and the second pressing member (200).

8. The cell testing and clamping device (1000) according to claim 7, characterized in that, Along the arrangement direction of the first clamping member (100) and the second clamping member (200), the first adjusting member (520) includes a first smooth rod section (5201) and a first threaded section (5202) arranged in sequence. The first clamping member (100) is provided with a first through hole (710), and the second clamping member (200) is provided with a first threaded hole (720). The first through hole (710) and the first threaded hole (720) are arranged opposite to each other. The first smooth rod segment (5201) passes through the first through hole (710) so that the first adjusting member (520) is rotatably connected to the first clamping member (100), and the first threaded segment (5202) is connected to the first threaded hole (720) so that the first adjusting member (520) can drive the second clamping member (200) to move toward the first clamping member (100).

9. The cell testing and clamping device (1000) according to claim 7, characterized in that, The first adjusting member (520) includes multiple sets of first adjusting rods spaced apart along the second direction. Each set of first adjusting rods has at least two rods, and the at least two rods are spaced apart along a third direction. The first direction, the second direction, and the third direction intersect each other.

10. The cell testing and clamping device (1000) according to any one of claims 1-9, characterized in that, The first adjusting member (520) and the second adjusting member (510) are spaced apart along the second direction; And / or, the first adjusting member (520) and the second adjusting member (510) are spaced apart along a third direction, and the first direction, the second direction and the third direction intersect each other.

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