Cylindrical battery cell testing tool

Abstract

The utility model relates to the technical field of battery testing, and particularly discloses a cylindrical battery cell testing tool which comprises a first insulating plate, a second insulating plate, two clamping plates, a bottom plate and a cover plate. The first insulating plate is provided with a first copper nose component; the second insulating plate and the first insulating plate are arranged at an interval, and the second insulating plate is provided with a second copper nose component; the two clamping plates are arranged at an interval, are both arranged between the first insulating plate and the second insulating plate, and are used for clamping a cylindrical battery cell; the bottom plate is arranged on the side, away from the clamping plate, of the first insulating plate, and the bottom plate is connected with the clamping plate; the cover plate is arranged on the side, away from the clamping plate, of the second insulating plate, and the cover plate is connected with the clamping plate; and the first copper nose component and the second copper nose component are respectively connected with the poles at the two ends of the cylindrical battery cell. According to the utility model, the vibration test of the cylindrical battery cell in a vertical state or in a state of being connected with charging and discharging equipment to simulate a normal working condition can be satisfied.

Description

Technical Field

[0001] This utility model relates to the field of battery testing technology, and in particular to a cylindrical battery cell testing fixture. Background Technology

[0002] Currently, with the development and expansion of new energy battery technology, cylindrical cells are widely used. To evaluate the performance and safety of cylindrical cells under different vibration environments and ensure their reliability and durability in practical use, vibration testing of cylindrical cells is essential.

[0003] Unlike prismatic cells, cylindrical cells have only two directions: radial and axial. Currently, for vibration testing of cylindrical cells, because the axial length is much larger than its diameter, horizontal placement offers advantages such as a low center of gravity and good stability. However, cylindrical cells used in certain special scenarios require vibration testing that simulates actual conditions and states. Sometimes this necessitates specifying the upright orientation of the cylindrical cell or using charging and discharging equipment to simulate normal operating conditions. In these cases, requirements are placed on parameters such as the cell's electrode orientation, charging / discharging state, and pressure. However, current technology cannot meet the requirements for simulating vibration testing of cylindrical cells based on actual conditions. Utility Model Content

[0004] The technical problem to be solved by this utility model is: how to solve the problem that the existing technology cannot meet the requirements of simulating vibration test of cylindrical cells according to their actual state.

[0005] To solve the above-mentioned technical problems, this utility model provides a cylindrical battery cell testing fixture, having intersecting first, second, and third directions, including:

[0006] A first insulating plate, wherein the first insulating plate is provided with a first copper nose component;

[0007] A second insulating plate is provided, which is spaced apart from the first insulating plate along the third direction, and the second insulating plate is provided with a second copper lug component;

[0008] Two clamping plates are arranged at intervals along the second direction, and both clamping plates are disposed between the first insulating plate and the second insulating plate. The clamping plates are used to clamp cylindrical battery cells.

[0009] A base plate, wherein the base plate is disposed on the side of the first insulating plate away from the clamping plate, and the base plate is connected to the clamping plate; and,

[0010] A cover plate is disposed on the side of the second insulating plate away from the clamping plate, and the cover plate is connected to the clamping plate;

[0011] The first copper nose component and the second copper nose component are respectively connected to the poles at both ends of the cylindrical battery cell.

[0012] More preferably, the clamping plate comprises:

[0013] Main body; and,

[0014] At least two extensions are provided at intervals along the first direction on the main body, and the two ends of the extensions extend out of the edge of the main body along the third direction, so that a window is formed between two adjacent extensions;

[0015] The first copper nose component and the second copper nose component are both inserted through the window.

[0016] More preferably, the extension is provided with a first connecting hole extending through the second direction;

[0017] The cylindrical cell testing fixture also includes:

[0018] A first fastener passes through the first connecting hole and is used to connect and lock the two clamps together along the second direction.

[0019] More preferably, both ends of the extension are provided with second connecting holes extending in the third direction;

[0020] The cylindrical cell testing fixture also includes:

[0021] A second fastener, disposed on the base plate, at least a portion of the second fastener extending through the first insulating plate in the third direction, and at least a portion of the second fastener connecting to a second connecting hole at one end of the extension; and

[0022] A third fastener is disposed on the cover plate, at least a portion of the third fastener extends through the second insulating plate in the third direction, and at least a portion of the third fastener is connected to a second connecting hole at the other end of the extension.

[0023] More preferably, the end face of the main body facing the cylindrical battery cell is provided with an arc groove or a V-groove.

[0024] More preferably, the first insulating plate is provided with a first clearance groove on the side away from the clamping plate, and the first copper nose component is provided on the side of the first insulating plate opposite to the first clearance groove.

[0025] The cylindrical cell testing fixture also includes:

[0026] A fourth fastener is provided in the first clearance groove. Along the third direction, the first insulating plate and the first copper lug component are connected and locked together by the fourth fastener.

[0027] More preferably, the second insulating plate is provided with a second clearance groove on the side away from the clamping plate, and the second copper nose component is provided on the side of the second insulating plate opposite to the second clearance groove;

[0028] The cylindrical cell testing fixture also includes:

[0029] The fifth fastener is located in the second clearance groove. Along the third direction, the second insulating plate and the second copper lug component are connected and locked together by the fifth fastener.

[0030] More preferably, the cylindrical cell testing fixture further includes:

[0031] Two stiffening plates are spaced apart on the base plate along the first direction, and each stiffening plate is connected to the two clamping plates.

[0032] More preferably, the clamping plate is provided with a third connecting hole on each of its opposite sides along the first direction;

[0033] The cylindrical cell testing fixture also includes:

[0034] A sixth fastener, the sixth fastener being used to connect the stiffening plate and the clamping plate along the first direction.

[0035] More preferably, the cylindrical cell testing fixture further includes:

[0036] A seventh fastener, the seventh fastener being used to connect the base plate and the first insulating plate along the third direction; and,

[0037] The eighth fastener is used to connect the cover plate and the second insulating plate along the third direction.

[0038] More preferably, the base plate is also provided with mounting holes.

[0039] Compared with the prior art, the cylindrical battery cell testing fixture provided by this utility model has the following advantages:

[0040] This invention, by setting two clamping plates, can clamp the cylindrical battery cell from a second direction, so that the cylindrical battery cell is in a vertical position. The base plate can connect the first insulating plate to the clamping plate, so that the first copper lug component on the first insulating plate can connect to the terminal post at one end of the cylindrical battery cell. The cover plate can connect the second insulating plate to the clamping plate, so that the second copper lug component on the second insulating plate can connect to the terminal post at the other end of the cylindrical battery cell. Thus, the cylindrical battery cell can be subjected to vibration testing in a vertical position, or can be connected to a charging and discharging device in a vertical position to simulate vibration testing under normal working conditions, thus meeting the testing requirements. The first and second insulating plates can also provide insulation when the battery cell is connected to the charging and discharging device, preventing leakage from affecting the test results. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the cylindrical cell testing fixture described in this utility model.

[0042] Figure 2 This is an exploded view of the cylindrical battery cell testing fixture described in this utility model.

[0043] Figure 3 This is a schematic diagram of the assembly of the insulating plate and the cylindrical battery cell described in this utility model.

[0044] Figure 4 This is a schematic diagram of the structure of the clamping plate described in this utility model.

[0045] Figure 5 This is a front view of the cylindrical battery cell testing fixture described in this utility model.

[0046] Figure 6 This is a utility model Figure 5 A sectional view of section AA in the middle.

[0047] Figure 7 This is a utility model Figure 5 A sectional view of section BB in the middle.

[0048] Figure label:

[0049] 10. Base plate; 11. Mounting holes; 12. Second fastener;

[0050] 20. Rib plate; 21. Sixth fastener;

[0051] 30. Clamping plate; 301. Main body; 302. Extension; 303. Window; 304. First connecting hole; 305. Second connecting hole; 306. Third connecting hole; 31. First fastener;

[0052] 40. First insulating plate; 41. First clearance groove; 42. Fourth fastener; 43. Seventh fastener;

[0053] 50. Second insulating plate; 51. Second clearance groove; 52. Fifth fastener; 53. Eighth fastener;

[0054] 60. Cover plate; 61. Third fastener;

[0055] 70. First bronze nose component;

[0056] 80. Second bronze nose component;

[0057] 90. Cylindrical battery cell. Detailed Implementation

[0058] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0059] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings are used only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0060] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0061] Furthermore, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0062] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0063] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0064] like Figures 1-7 As shown, this embodiment provides a cylindrical battery cell testing fixture, which is designed to clamp the cylindrical battery cell 90 to meet the requirements of vertical vibration testing or vertical vibration testing with charging and discharging equipment for the cylindrical battery cell 90.

[0065] In some embodiments, the cylindrical cell testing fixture has a first direction X, a second direction Y, and a third direction Z that intersect each other in pairs. In other embodiments, the first direction X, the second direction Y, and the third direction Z intersect each other perpendicularly.

[0066] It should be noted that the cylindrical cell 90 has radial and axial directions. During the clamping process of the cylindrical cell 90, the axial direction of the cylindrical cell 90 is parallel to the third direction Z, so that the cylindrical cell 90 is in a vertical state after clamping.

[0067] In some embodiments, the cylindrical cell testing fixture includes a first insulating plate 40 and a second insulating plate 50; wherein the second insulating plate 50 and the first insulating plate 40 are spaced apart along a third direction Z, and the first insulating plate 40 and the second insulating plate 50 are respectively located at both ends of the cylindrical cell 90. The first insulating plate 40 is provided with a first copper lug member 70, and the second insulating plate 50 is provided with a second copper lug member 80. After clamping the cylindrical cell 90, the first copper lug member 70 and the second copper lug member 80 are respectively connected to the terminals at both ends of the cylindrical cell 90, thereby realizing the connection with the charging and discharging equipment; the first insulating plate 40 and the second insulating plate 50 can play an insulating role when the cylindrical cell 90 is connected to the charging and discharging equipment, so as to avoid leakage current affecting the test results.

[0068] It should be noted that the terminals at both ends of the cylindrical cell 90 include a positive terminal and a negative terminal. When the cylindrical cell 90 is in a vertical position, it means that the positive terminal of the cylindrical cell 90 is facing upward and the negative terminal is facing downward. At this time, the second copper lug component 80 is connected to the positive terminal and conducts, and the first copper lug component 70 is connected to the negative terminal and conducts; or, the negative terminal of the cylindrical cell 90 is facing upward and the positive terminal is facing downward, the first copper lug component 70 is connected to the positive terminal and conducts, and the second copper lug component 80 is connected to the negative terminal and conducts.

[0069] In some embodiments, the cylindrical cell testing fixture further includes a base plate 10, a cover plate 60, and two clamping plates 30. The two clamping plates 30 are arranged at intervals along the second direction Y, and both clamping plates 30 are located between the first insulating plate 40 and the second insulating plate 50. The clamping plates 30 are used to clamp the cylindrical cell 90. The base plate 10 is located on the side of the first insulating plate 40 away from the clamping plates 30, and the base plate 10 is connected to the clamping plates 30. The cover plate 60 is located on the side of the second insulating plate 50 away from the clamping plates 30, and the cover plate 60 is connected to the clamping plates 20. Therefore, after the two clamping plates 30 clamp the cylindrical cell 90 along the second direction Y, the base plate 10 and the cover plate 60 are connected to the clamping plates 30 respectively, thereby achieving axial and radial clamping of the cylindrical cell 90. This effectively avoids the cylindrical cell 90 from moving during vibration testing, which would affect the test results, and also avoids the problem of poor contact between the copper lug component and the electrode post caused by the movement of the cylindrical cell 90.

[0070] In some embodiments, the first insulating plate 40 and the second insulating plate 50 are preferably nylon plates (polyamide). The molecular structure of the nylon plate gives it high volume resistivity and resistance to penetration voltage. It can maintain stable power frequency insulation performance even in humid environments. Its insulation characteristics can effectively isolate current and prevent the cylindrical cell 90 from having test errors due to leakage, thereby ensuring the accuracy of the test results.

[0071] In some embodiments, the clamping plate 30 includes a main body 301 and at least two extensions 302; wherein the at least two extensions 302 are spaced apart on the main body 301 along a first direction X, and the main body 301 has a slot for clamping the cylindrical battery cell 90 between two adjacent extensions 302, so that the two clamping plates 30 can clamp the cylindrical battery cell 90 when they approach each other in the second direction Y.

[0072] In a preferred embodiment, there are four extensions 302, forming three slots that can simultaneously hold three cylindrical cells 90. In other embodiments, there may be one, two, four, five or even more slots. The actual number can be selected and arranged according to the needs to simultaneously meet the synchronous testing of multiple cylindrical cells 90 and improve testing efficiency.

[0073] Similarly, the number of the first copper nose component 70 and the second copper nose component 80 is the same as the number of the cylindrical battery cell 90 to be tested, so as to meet the requirements of multi-channel connection charging and discharging equipment testing.

[0074] In some embodiments, the end face of the main body 301 facing the cylindrical cell 90 is provided with an arc groove or a V-groove, so that the main body 301 can abut against the outer peripheral wall of the cylindrical cell 90 to clamp the cylindrical cell 90 and prevent the cylindrical cell 90 from moving or being damaged.

[0075] In some embodiments, the two ends of the extension 302 extend out of the edge of the main body 301 along the third direction Z, so that a window 303 is formed between two adjacent extensions 302. The first copper nose member 70 and the second copper nose member 80 are both connected to the window 303, which facilitates the extension of the first copper nose member 70 and the second copper nose member 80 to the outside of the clamp 30, so as to facilitate the connection of the first copper nose member 70 and the second copper nose member 80 with external charging and discharging equipment.

[0076] In some embodiments, the extension 302 is provided with a first connecting hole 304 extending along the second direction Y. The cylindrical cell testing fixture also includes a first fastener 31, which passes through the first connecting hole 304. The first fastener 31 is used to connect and lock the two clamping plates 30 along the second direction Y. After adjusting the electrode direction of the cylindrical cell 90, the cylindrical cell 90 is placed vertically upward. The two clamping plates 30 are clamped with appropriate torque by the first fastener 31, thereby limiting the radial movement of the cylindrical cell 90.

[0077] In some embodiments, both ends of the extension 302 are provided with second connecting holes 305 extending in the third direction Z; the cylindrical cell testing fixture also includes a second fastener 12 and a third fastener 61; the second fastener 12 is disposed on the base plate 10, at least a portion of the second fastener 12 extends in the third direction Z through the first insulating plate 40, and at least a portion of the second fastener 12 is connected to the second connecting hole 305 at one end of the extension 302, so that when the base plate 10 is connected to the clamping plate 30, the first insulating plate 40 can be fixed and locked at the same time, which can prevent the axial movement of the cylindrical cell 90, so that the first copper nose component 70 can always abut against the pole of the cylindrical cell 90, ensuring that the cylindrical cell 90 can complete the vibration test under simulated normal working conditions.

[0078] Similarly, in some embodiments, a third fastener 61 is disposed on the cover plate 60, at least a portion of the third fastener 61 extends through the second insulating plate 50 in the third direction Z, and at least a portion of the third fastener 61 is connected to the second connecting hole 305 at the other end of the extension portion 302, thereby enabling the second insulating plate 50 to be fixedly locked when the bottom cover plate 60 is connected to the clamping plate 30, preventing axial movement of the cylindrical cell 90, and ensuring that the second copper nose component 80 can always abut against the pole at the other end of the cylindrical cell 90, ensuring that the cylindrical cell 90 can complete the vibration test under simulated normal working conditions.

[0079] In some embodiments, the first insulating plate 40 and the base plate 10 are in surface contact. To prevent the first copper lug component 70 from affecting the contact between the first insulating plate 40 and the base plate 10 after installation, a first clearance groove 41 is provided on the side of the first insulating plate 40 away from the clamping plate 30, and the first copper lug component 70 is located on the side of the first insulating plate 40 facing away from the first clearance groove 41. The cylindrical cell testing fixture also includes a fourth fastener 42, which is located in the first clearance groove 41 and extends along the third direction Z. The first insulating plate 40 and the first copper lug component 70 are connected and locked by the fourth fastener 42. The first clearance groove 41 allows the fourth fastener 42 to be hidden after the first copper lug component 70 is fixed, preventing the fourth fastener 42 from extending between the first insulating plate 40 and the base plate 10 and affecting the clamping effect.

[0080] Similarly, in some embodiments, the second insulating plate 50 and the cover plate 60 are in surface contact. To prevent the second copper lug component 80 from affecting the contact between the second insulating plate 50 and the cover plate 60 after installation, a second clearance groove 51 is provided on the side of the second insulating plate 50 away from the clamping plate 30, and the second copper lug component 80 is located on the side of the second insulating plate 50 facing away from the second clearance groove 51. The cylindrical cell testing fixture also includes a fifth fastener 52, which is located in the second clearance groove 51 along the third direction Z. The second insulating plate 50 and the second copper lug component 80 are connected and locked by the fifth fastener 52. The second clearance groove 51 allows the fifth fastener 52 to be hidden after the second copper lug component 80 is fixed, preventing the fifth fastener 52 from extending between the second insulating plate 50 and the cover plate 60 and affecting the clamping effect.

[0081] In some embodiments, to ensure the clamping stability and balance of the cylindrical cell testing fixture for the cylindrical cell 90, the cylindrical cell testing fixture further includes two stiffening plates 20, which are spaced apart along the first direction X on the base plate 10. Each stiffening plate 20 is connected to two clamping plates 30. Specifically, each clamping plate 30 has a third connecting hole 306 on its opposite sides along the first direction X. The cylindrical cell testing fixture also includes a sixth fastener 21, which is used to connect the stiffening plates 20 and the clamping plates 30 along the first direction X. The stiffening plates 20 further improve the connection strength between the base plate 10 and the clamping plates 30, and the stiffening plates 20 can prevent the clamping plates 30 from shifting in the first direction X and the second direction Y, thereby ensuring the clamping stability and balance of the cylindrical cell 90 and ensuring the accuracy of the test results.

[0082] In some embodiments, to prevent the first insulating plate 40 from shifting in the first direction X or the second direction Y during vibration testing, which could lead to poor contact between the first copper lug component 70 and the terminal of the cylindrical cell 90, the cylindrical cell testing fixture also includes a seventh fastener 43. The seventh fastener 43 is used to connect the base plate 10 and the first insulating plate 40 along the third direction Z. The seventh fastener 43 can lock the base plate 10 and the first insulating plate 40, effectively preventing the first insulating plate 40 from shifting.

[0083] Similarly, in some embodiments, to prevent the second insulating plate 50 from shifting in the first direction X or the second direction Y during vibration testing, which could lead to poor contact between the second copper lug component 80 and the terminal of the cylindrical cell 90, the cylindrical cell testing fixture also includes an eighth fastener 53. The eighth fastener 53 is used to connect the cover plate 60 and the second insulating plate 50 along the third direction Z. The eighth fastener 53 can lock the cover plate 60 and the second insulating plate 50, effectively preventing the second insulating plate 50 from shifting.

[0084] In some embodiments, the base plate 10 is also provided with mounting holes 11 to facilitate fixing the cylindrical cell testing fixture on the equipment workbench for vibration testing.

[0085] The working process of this utility model is as follows: (Refer to...) Figures 1-7When clamping the cylindrical battery cell 90, the first copper lug component 70 is fixed to the first insulating plate 40 using the fourth fastener 42, and then the first insulating plate 40 is fixed to the base plate 10 using the seventh fastener 43. One side of the clamping plate 30 is fixed using the second fastener 12. The electrode direction of the cylindrical battery cell 90 is adjusted, and the cylindrical battery cell 90 is placed vertically upwards. The other side of the clamping plate 30 is clamped to the cylindrical battery cell 90 with appropriate torque using the first fastener 31, and the other side of the clamping plate 30 is then clamped using the second fastener 12. The second copper lug component 80 is then fixed to the second insulating plate 50 using the fifth fastener 52. The second insulating plate 50 is then fixed to the cover plate 60 using the eighth fastener 53. The cover plate 60 is then connected and fixed to the clamping plates 30 on both sides using the third fastener 61. Finally, the two side stiffeners 20 are fixed to the clamping plates 30 and the base plate 10. The cylindrical battery cell testing fixture can then be placed on the equipment workbench. After connecting the charging and discharging equipment, vibration detection in the charging and discharging state can be realized.

[0086] In summary, this utility model provides a cylindrical battery cell testing fixture. By setting two clamping plates 30, it can clamp the cylindrical battery cell 90 from the second direction Y, placing the cylindrical battery cell 90 in a vertical position. The base plate 10 connects the first insulating plate 40 to the clamping plates 30, allowing the first copper lug member 70 on the first insulating plate 40 to connect to the terminal post at one end of the cylindrical battery cell 90. The cover plate 60 connects the second insulating plate 50 to the clamping plates 30, allowing the second copper lug member 80 on the second insulating plate 50 to connect to the terminal post at the other end of the cylindrical battery cell 90. This enables vibration testing of the cylindrical battery cell 90 in a vertical position, or allows it to be connected to a charging / discharging device in a vertical position to simulate vibration testing under normal operating conditions, meeting testing requirements. Furthermore, the first and second insulating plates provide insulation when the battery cell is connected to the charging / discharging device, preventing leakage from affecting the test results.

[0087] The above description is merely a preferred embodiment of this utility model. It should be noted that, for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of this utility model, and these improvements and substitutions should also be considered within the protection scope of this utility model. The basic principles, main features, and advantages of this utility model have been shown and described above. For those skilled in the art, it is obvious that this utility model is not limited to the details of the above preferred embodiments. The embodiments should be considered exemplary and non-limiting. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included within this utility model.

[0088] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in the embodiments can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A cylindrical battery cell testing fixture, having intersecting first direction (X), second direction (Y), and third direction (Z), characterized in that, include: A first insulating plate (40) is provided with a first copper nose component (70); The second insulating plate (50) is provided with a second copper nose component (80) at a distance from the first insulating plate (40) along the third direction (Z). Two clamping plates (30) are arranged at intervals along the second direction (Y). Both clamping plates (30) are disposed between the first insulating plate (40) and the second insulating plate (50). The clamping plates (30) are used to clamp the cylindrical battery cell (90). A base plate (10) is disposed on the side of the first insulating plate (40) away from the clamping plate (30), and the base plate (10) is connected to the clamping plate (30); and, A cover plate (60) is disposed on the side of the second insulating plate (50) away from the clamping plate (30), and the cover plate (60) is connected to the clamping plate (30); The first copper nose component (70) and the second copper nose component (80) are respectively connected to the poles at both ends of the cylindrical battery cell (90).

2. The cylindrical cell testing fixture according to claim 1, characterized in that, The clamping plate (30) includes: Main body (301); and, At least two extensions (302) are provided at intervals along the first direction (X) on the main body (301), and the two ends of the extensions (302) extend out of the edge of the main body (301) along the third direction (Z) so that a window (303) is formed between two adjacent extensions (302); The first copper nose component (70) and the second copper nose component (80) are both connected to the window (303).

3. The cylindrical cell testing fixture according to claim 2, characterized in that, The extension (302) is provided with a first connecting hole (304) extending through the second direction (Y); The cylindrical cell testing fixture also includes: A first fastener (31) passes through the first connecting hole (304) and is used to connect and lock the two clamps (30) along the second direction (Y).

4. The cylindrical cell testing fixture according to claim 2, characterized in that, Both ends of the extension (302) are provided with second connecting holes (305) extending along the third direction (Z); The cylindrical cell testing fixture also includes: A second fastener (12) is disposed on the base plate (10), at least a portion of the second fastener (12) extends through the first insulating plate (40) along the third direction (Z), and at least a portion of the second fastener (12) is connected to a second connecting hole (305) at one end of the extension (302); and, A third fastener (61) is disposed on the cover plate (60) of the reinforcing plate. At least a portion of the third fastener (61) extends through the second insulating plate (50) along the third direction (Z), and at least a portion of the third fastener (61) is connected to a second connecting hole (305) at the other end of the extension (302).

5. The cylindrical cell testing fixture according to claim 2, characterized in that, The main body (301) has an arc groove or V-groove on the end face facing the cylindrical cell (90).

6. The cylindrical cell testing fixture according to claim 1, characterized in that, The first insulating plate (40) is provided with a first clearance groove (41) on the side away from the clamping plate (30), and the first copper nose component (70) is provided on the side of the first insulating plate (40) facing away from the first clearance groove (41). The cylindrical cell testing fixture also includes: The fourth fastener (42) is located in the first clearance groove (41) and along the third direction (Z), the first insulating plate (40) and the first copper nose component (70) are connected and locked together by the fourth fastener (42).

7. The cylindrical cell testing fixture according to claim 1, characterized in that, The second insulating plate (50) is provided with a second clearance groove (51) on the side away from the clamping plate (30), and the second copper nose component (80) is provided on the side of the second insulating plate (50) facing away from the second clearance groove (51); The cylindrical cell testing fixture also includes: The fifth fastener (52) is located in the second clearance groove (51) along the third direction (Z), and the second insulating plate (50) and the second copper nose component (80) are connected and locked by the fifth fastener (52).

8. The cylindrical cell testing fixture according to claim 1, characterized in that, The cylindrical cell testing fixture also includes: Two stiffening plates (20) are spaced apart on the base plate (10) along the first direction (X), and each stiffening plate (20) is connected to the two clamping plates (30).

9. A cylindrical battery cell testing fixture according to claim 8, characterized in that, The clamping plate (30) is provided with a third connecting hole (306) on both sides of the first direction (X); The cylindrical cell testing fixture also includes: The sixth fastener (21) is used to connect the stiffening plate (20) and the clamping plate (30) along the first direction (X).

10. A cylindrical battery cell testing fixture according to claim 1, characterized in that, The cylindrical cell testing fixture also includes: A seventh fastener (43) for connecting the base plate (10) and the first insulating plate (40) along the third direction (Z); and, The eighth fastener (53) is used to connect the cover plate (60) and the second insulating plate (50) along the third direction (Z).

11. A cylindrical battery cell testing fixture according to claim 1, characterized in that, The base plate (10) is also provided with mounting holes (11).

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