Secondary battery test equipment

Abstract

The present application discloses a test device for a secondary battery, the test device comprising: a clamping member, the clamping member having an open end, the clamping member being suitable for clamping a secondary battery through the open end, and the open end having curling edges formed on both sides in a first direction; a clamping mechanism, the clamping mechanism comprising: a first clamp and a second clamp, the first clamp and the second clamp being arranged at intervals along the first direction, the first clamp and the second clamp being respectively configured to be suitable for clamping two curling edges of the clamping member; a driving mechanism, the driving mechanism being connected to the first clamp and / or the second clamp, and being used to move the first clamp and the second clamp relative to each other along the first direction. According to the test device for a secondary battery of the present application, by setting a clamping mechanism and a driving mechanism, the device of the present application can realize the automatic opening and clamping operation of the clamping member, thereby improving the rate at which the test device clamps or replaces the secondary battery, and at the same time, reducing the risk of directly operating the test device by hand.

Description

Technical Field

[0001] The present application relates to the technical field of battery testing, and in particular to a testing device for a secondary battery. Background Art

[0002] In the relevant technology, after the production of the battery, a series of rigorous tests are required to ensure that its quality and performance meet the expected standards. In the rigorous testing process after the battery is produced, in order to ensure that its quality and performance meet the expected standards, a series of tests will be carried out, including basic performance tests (such as capacity, internal resistance, voltage), safety performance tests (such as overcharge, over discharge, short circuit, acupuncture, thermal stability), environmental performance tests (such as temperature cycle, humidity, vibration, impact) and electrochemical performance tests. Some steps in these tests do require the battery to be fixed to ensure the accuracy and safety of the test. At present, the manual mode is mostly used to clamp and fix the battery in subsequent tests, which makes the clamping and fixing steps in the test device inconvenient to operate. Utility Model Content

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application is to propose a secondary battery testing device, which can realize the automatic opening and clamping operation of the clamping member, thereby improving the rate of clamping or replacing the secondary battery by the testing device, and at the same time, reducing the risk of directly operating the testing device by hand.

[0004] An embodiment of the present application provides a testing device for a secondary battery, the device comprising: a clamping member, the clamping member having an open end, the clamping member being suitable for clamping the secondary battery through the open end, and the open end being respectively formed with curled edges on both sides in a first direction; a clamping mechanism, the clamping mechanism comprising: a first clamp and a second clamp, the first clamp and the second clamp being arranged at intervals along the first direction, the first clamp and the second clamp being respectively configured to be suitable for clamping two curled edges of the clamping member; a driving mechanism, the driving mechanism being connected to the first clamp and / or the second clamp, and being used to make the first clamp and the second clamp move relative to each other along the first direction.

[0005] In the above technical solution, by setting up a clamping mechanism and a driving mechanism, the device of the present application can realize automatic opening and clamping operations of the clamping member, thereby improving the rate at which the test device clamps or replaces secondary batteries, while also reducing the risk of directly operating the test device by hand.

[0006] In some embodiments, either the first clamp or the second clamp is formed with a slot extending along the second direction, an opening of the slot on the first clamp and an opening of the slot on the second clamp are arranged opposite to each other in the first direction, and both the first clamp and the second clamp are suitable for holding the curled edge in the slot, wherein the second direction intersects with the first direction.

[0007] In the above technical solution, by providing a card slot, the structure of the test device can be simplified, thereby reducing the production cost of the test device.

[0008] In some embodiments, any one of the first clamp and the second clamp includes: a first clamp block and a second clamp block, the first clamp block is formed with a first groove, the second clamp block is formed with a second groove, and the inner wall of the first groove and the inner wall of the second groove cooperate to define a card slot.

[0009] In the above technical solution, by providing the first clamp block and the second clamp block, the production difficulty of the first clamp and the second clamp can be reduced, thereby reducing the production cost of the entire clamping mechanism, thereby increasing the production rate of the entire clamping mechanism.

[0010] In some embodiments, the first clamping block and the second clamping block may be movably connected to adjust the cross-sectional size of the card slot and / or adjust the opening width of the card slot.

[0011] In the above technical solution, the first clamp block and the second clamp block are movably connected to adjust the cross-sectional size of the card slot and / or adjust the opening width of the card slot, so that the card slot can adapt to the curling of clamps of various specifications, thereby increasing the adaptability of the test device of the present application.

[0012] In some embodiments, the first clamp and the second clamp both further include: a first connecting member, and the first clamp block is connected to the second clamp block through the first connecting member, so that the second clamp block is movable relative to the first clamp block.

[0013] In the above technical solution, by setting the first connecting member to realize the movable connection between the first clamp block and the second clamp block, the structural complexity of the first clamp block and the second clamp block can be reduced, and then the production difficulty of the first clamp and the second clamp can be reduced, and then the production cost of the entire clamping mechanism can be reduced, thereby improving the production rate of the entire clamping mechanism.

[0014] In some embodiments, the first connecting member is formed as a rotating shaft, the first connecting member is connected to one of the first clamping block and the second clamping block, and the other one is formed with an axial hole, and the rotating shaft is rotatably fitted in the axial hole.

[0015] In the above technical solution, by forming the first connecting member into a rotating shaft and utilizing the rotating shaft and the axial hole to realize the movable connection between the first clamp block and the second clamp block, it helps to achieve a more compact mechanical design. At the same time, the structure of the rotating shaft and the axial hole is relatively simple, which can also reduce the operating difficulty and production cost of the testing device.

[0016] In some embodiments, the first connecting member is a first elastic member.

[0017] In the above technical solution, by setting the first connecting member as the first elastic member, the overall structure of the test device of the present application can be further simplified, thereby further reducing the production cost of the test device.

[0018] In some embodiments, the first clamp and the second clamp further include: a first push rod, and the first push rod is suitable for driving the second clamp to rotate around the first connecting member.

[0019] In the above technical solution, by setting the first push rod, the width of the slot opening or the size of the cross-sectional size can be adjusted, so that the test device can adapt to clamps of various specifications, thereby clamping secondary batteries of different specifications. At the same time, the structure of the first push rod is relatively simple and easy to operate. Therefore, the operating steps of the test device can be simplified and the convenience of operation of the test device can be improved.

[0020] In some embodiments, the first clamping block is formed with a first through hole penetrating the first clamping block along a third direction, and the first push rod passes through the first through hole and is connected to one end of the second clamping block, wherein the third direction intersects both the first direction and the second direction.

[0021] In the above technical solution, by forming a first through hole that passes through the first clamping block along a third direction, and the first push rod passes through the first through hole and is connected to one end of the second clamping block, the structural layout of the entire test device can be optimized, and the operating difficulty of the entire test device can be reduced, thereby improving the operability of the test device.

[0022] In some embodiments, the first through hole is formed as a threaded hole, the first push rod has a first threaded portion extending along the axis, and the first threaded portion is threadedly fitted in the threaded hole.

[0023] In the above technical solution, the first through hole is formed as a threaded hole by setting the first through hole, and the first push rod has a first threaded portion extending along the axis, and the first threaded portion is threadedly engaged in the threaded hole, which can improve the precise control of the position of the second clamping block and the stable force transmission by the first push rod, thereby improving the adaptability of the slot and the curling edge.

[0024] In some embodiments, the clamping mechanism further includes: a first base, the first base is fixedly connected to the first clamp, and a driving mechanism is connected to the first base and is used to drive the first base to move along the first direction.

[0025] In the above technical solution, by providing the first base, the vibration of the driving mechanism on the first clamp during operation can be reduced, thereby improving the stability of the first clamp during operation, thereby improving the clamping stability of the clamping mechanism.

[0026] In some embodiments, the driving mechanism includes: a driving member, which is a driving motor or a driving cylinder, and the driving member is connected to the first base and is used to drive the first base to move along the first direction.

[0027] In the above technical solution, by providing a driving member, the first base can be driven to move along the first direction, thereby driving the first clamp to move along the first direction, so that the test device can clamp and release the secondary battery.

[0028] In some embodiments, the driving member is a driving cylinder, and the intake pressure and / or intake flow rate of the driving cylinder is adjustable.

[0029] In the above technical solution, by setting the driving member as a driving cylinder and the intake pressure and / or flow rate being adjustable, the cost of the entire testing device can be reduced while the clamping force and running speed of the entire testing device can be controlled, thereby ensuring the normal operation of the entire testing device while reducing the operating risks of the operator.

[0030] In some embodiments, the driving mechanism further includes: a driving rod connected between the driving member and the first base.

[0031] In the above technical solution, by providing a driving rod, the force transmission path is optimized, and effective force transmission and motion conversion are achieved, thereby achieving linear motion of the first base along the first direction.

[0032] In some embodiments, the driving rod extends along a first direction, the first end of the driving rod is connected to the driving member, the second end of the driving rod is slidably connected to the first base, and the driving mechanism also includes: a second elastic member, one end of the second elastic member is connected to the driving member, and the other end of the second elastic member is connected to the first base.

[0033] In the above technical solution, by setting the second end of the driving rod to be slidably connected to the first base, the test device of the present application can manually adjust the position of the first base. Then, when the clamping piece needs to be clamped in the slot before the test device works, the first clamp can be manually moved away from the second clamp, so that a certain space is formed between the first clamp and the second clamp, which is conducive to the placement of the clamping piece. At the same time, when the test device fails during operation, the clamping piece can also be manually released, thereby effectively reducing the probability of damage to the clamping piece and the internal clamped object. In addition, by setting the second elastic piece, this embodiment can also ensure that the test device of the present application can achieve the clamping work of the clamping piece.

[0034] In some embodiments, the first base has a second through hole extending along the first direction, the second end extends out of the first base through the second through hole, and a limiting portion is provided at the second end of the driving rod. The limiting portion and the second elastic member are respectively arranged on both sides of the first base in the first direction to limit the active position of the first base on the driving rod.

[0035] In the above technical solution, by providing the limiting portion, the first base can be effectively prevented from sliding off the driving rod during movement, thereby improving the operating reliability of the first base and ensuring the normal operation of the testing device.

[0036] In some embodiments, the testing device further includes: a guide rail extending along a first direction, the first fixture being arranged on the guide rail, and the first fixture being slidable along the guide rail in the first direction.

[0037] In the above technical solution, by setting a guide rail, the moving trajectory of the first clamp can be further limited, thereby improving the stability and accuracy of the first clamp moving along the first direction, so that the test device in the present application can quickly and accurately open and close the clamp, thereby improving the testing efficiency of the battery; at the same time, the structure of the guide rail is relatively simple, thereby improving the convenience of installation and maintenance of the test device.

[0038] In some embodiments, the testing device further includes: a first mounting seat and a second mounting seat arranged at intervals along the first direction, the driving mechanism and the second fixture are arranged on the first mounting seat and the second mounting seat respectively, and the first fixture is arranged between the first mounting seat and the second mounting seat.

[0039] In the above technical solution, by setting the first mounting seat and the second mounting seat, the stability of the entire test device can be enhanced, so that the test device of the present application will not shake or shift during the entire operation process, thereby improving the working reliability of the test device; at the same time, by setting the first clamp to be arranged between the first mounting seat and the second mounting seat, the rationality of the layout of the test device can also be improved, and the overall size of the test device can be reduced.

[0040] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 is a schematic diagram of a secondary battery testing device according to an embodiment of the present application at one angle;

[0042] Figure 2 is a schematic diagram of a secondary battery testing device according to an embodiment of the present application from another angle;

[0043] Figure 3is a schematic diagram of a secondary battery testing device according to an embodiment of the present application from another angle;

[0044] Figure 4 is a partial schematic diagram of a secondary battery testing device according to an embodiment of the present application;

[0045] Figure 5 2 is a schematic diagram of a secondary battery testing device according to an embodiment of the present application from another angle.

[0046] Reference numerals:

[0047] 100. Testing device;

[0048] 10. Clamping mechanism; 11. First clamp; 12. Second clamp; 13. First base; 14. First clamp block; 141. First groove; 15. Second clamp block; 151. Second groove; 16. Slot; 17. First push rod; 18. First connecting member;

[0049] 20. driving mechanism; 21. driving member; 22. driving rod; 221. limiting part; 23. second elastic member; 24. regulating valve;

[0050] 30. First mounting seat; 40. Second mounting seat; 50. Guide rail. DETAILED DESCRIPTION

[0051] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0052] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0053] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0054] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0055] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0056] In the description of the embodiments of the present application, the term "plurality" refers to more than two (including two).

[0057] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the embodiments of the present application.

[0058] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0059] At present, from the perspective of market development, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding.

[0060] In the relevant technology, after the production of the battery, a series of rigorous tests are required to ensure that its quality and performance meet the expected standards. In the rigorous testing process after the battery is produced, in order to ensure that its quality and performance meet the expected standards, a series of tests will be carried out, including basic performance tests (such as capacity, internal resistance, voltage), safety performance tests (such as overcharge, over discharge, short circuit, acupuncture, thermal stability), environmental performance tests (such as temperature cycle, humidity, vibration, impact) and electrochemical performance tests. Some steps in these tests do require the battery to be fixed to ensure the accuracy and safety of the test. At present, the manual mode is mostly used to clamp and fix the battery in subsequent tests, which makes the clamping and fixing steps in the test device inconvenient to operate.

[0061] Based on the above considerations, in order to solve the problem of inconvenient clamping operation in the test device, a test device is designed, and the test device includes: a clamping member, a clamping mechanism and a driving mechanism. Among them, the clamping member is suitable for clamping the secondary battery through the open end, and the open end is respectively formed with curling edges on both sides in the first direction; the clamping mechanism includes: a first clamp and a second clamp, the first clamp and the second clamp are arranged at intervals along the first direction, and the first clamp and the second clamp are respectively configured to be suitable for clamping the two curling edges of the clamping member, so that the test device clamps the secondary battery; the driving mechanism is connected to the first clamp and / or the second clamp, and is used to make the first clamp and the second clamp move relative to each other along the first direction. In this way, the device can realize the automatic opening and clamping operation of the clamping member, thereby improving the rate at which the test device clamps or replaces the secondary battery, and at the same time, it also reduces the risk of directly operating the test device by hand.

[0062] Reference below Figure 1-Figure 5 A secondary battery testing device 100 according to an embodiment of the present application is described. Figure 1-Figure 3 and Figure 5 is a schematic diagram of a secondary battery testing device 100 according to an embodiment of the present application, Figure 4 FIG. 1 is a partial schematic diagram of a secondary battery testing device 100 according to an embodiment of the present application.

[0063] The present application embodiment provides a secondary battery testing device 100, such as Figure 1-Figure 3 As shown, the testing device 100 comprises: a clamping member, wherein the clamping member has an open end, the clamping member is suitable for clamping the secondary battery through the open end, and curling edges are formed on both sides of the open end in a first direction.

[0064] The clamping mechanism 10 and the driving mechanism 20 . The clamping mechanism 10 includes: a first clamp 11 and a second clamp 12 , which are arranged at intervals along a first direction, and the first clamp 11 and the second clamp 12 are respectively configured as two curling edges of a clamping member suitable for clamping the test device 100 .

[0065] It can be understood that the first clamp 11 and the second clamp 12 mainly fix the clamping member by clamping the two curled edges of the clamping member, wherein it should be noted that the two curled edges of the clamping member are respectively arranged on both sides of the opening of the clamping member. Therefore, in the present application, the first clamp 11 and the second clamp 12 are respectively configured to be suitable for clamping the two curled edges of the clamping member, which is beneficial to the subsequent clamping and loosening operations of the secondary battery by the testing device 100.

[0066] The driving mechanism 20 is connected to the first clamp 11 and / or the second clamp 12 and is used to make the first clamp 11 and the second clamp 12 move relative to each other along a first direction.

[0067] It can be understood that the driving mechanism 20 can be connected to the first clamp 11 to drive the first clamp 11 to move along the first direction; it can also be connected to the second clamp 12 to drive the second clamp 12 to move along the first direction; it can also be connected to both the first clamp 11 and the second clamp 12, so that both the first clamp 11 and the second clamp 12 can move along the first direction.

[0068] The driving mechanism 20 mainly provides driving force for the movement of the first clamp 11 and / or the second clamp 12, so that the first clamp 11 and / or the second clamp 12 can accurately reciprocate along the first direction, thereby realizing the opening or clamping of the clamp.

[0069] When the secondary battery needs to be tested, the driving mechanism 20 first drives the first clamp 11 and / or the second clamp 12 to move away from each other, so that sufficient force can be applied to overcome the clamping force of the clamping member to open it, and then the secondary battery is placed in, and then the two clamps are driven closer to clamp the clamping member to fix the secondary battery.

[0070] Furthermore, there may be multiple driving modes, for example, electric, hydraulic, pneumatic or other suitable mechanical transmission modes.

[0071] In the above technical solution, by setting up the clamping mechanism 10 and the driving mechanism 20, the test device 100 of the present application can realize the automatic opening and clamping operation of the clamping member, thereby improving the rate at which the test device 100 clamps or replaces the secondary battery, and at the same time, reducing the risk of directly operating the test device 100 by hand.

[0072] In some specific embodiments, the clamping member of the test device 100 is a phoenix clip, wherein the phoenix clip has a relatively simple structure and low cost, so using the phoenix clip as the clamping member can reduce the cost of the entire test device 100.

[0073] It should be noted that the phoenix tail clip is an elastic member and includes a ridge and two clips, the two clips are respectively connected to the ridge in a first direction (for example Figure 1 and along the sides of the third direction (e.g. Figure 1 The first direction and the third direction intersect with each other, and a curling edge is formed at one end of the two clips away from the spine.

[0074] Among them, "the test device is an elastic part" is intended to indicate that the test device is usually made of an elastic material, and this elastic property enables it to be opened by applying an external force and automatically return to a closed state after the external force is removed.

[0075] Specifically, the spine is the central part of the test device, which mainly supports and connects the two clamps; the clamps are mainly used to clamp objects so that the objects can be fixed.

[0076] In addition, “the first direction intersects the third direction” is intended to indicate that the first direction and the third direction may be arranged perpendicularly or may only intersect non-perpendicularly, for example, the first direction and the third direction may be arranged at an angle of 30°, 60° or 80°.

[0077] In some embodiments, Figure 1-Figure 3 As shown, any one of the first clamp 11 and the second clamp 12 is formed with a slot 16, and the slot 16 extends along the second direction. The opening of the slot 16 on the first clamp 11 and the opening of the slot 16 on the second clamp 12 are arranged opposite to each other in the first direction. The first clamp 11 and the second clamp 12 are both suitable for holding the curled edge in the slot 16, wherein the second direction intersects with the first direction.

[0078] Among them, "the opening of the slot 16 on the first clamp 11 and the opening of the slot 16 on the second clamp 12 are arranged opposite to each other in the first direction" means that the opening of the slot 16 on the first clamp 11 faces the opening of the slot 16 on the second clamp 12, and the two are arranged relative to each other. This is conducive to improving the rationality of the layout of the test device 100, so that it can fix the clamp between the first clamp 11 and the second clamp 12, thereby increasing the reliability of the operation of the test device 100.

[0079] In addition, “the second direction intersects the first direction” is intended to indicate that the second direction and the first direction may be arranged perpendicularly, or may only intersect non-perpendicularly, for example, the second direction and the first direction may be arranged at an angle of 30°, 60° or 80°.

[0080] In the above technical solution, by providing the card slot 16 , the structure of the testing device 100 can be simplified, thereby reducing the production cost of the testing device 100 .

[0081] In some embodiments, Figure 1-Figure 3 and Figure 4 As shown, any one of the first clamp 11 and the second clamp 12 includes: a first clamp block 14 and a second clamp block 15, the first clamp block 14 is formed with a first groove 141, and the second clamp block 15 is formed with a second groove 151, and the inner wall of the first groove 141 and the inner wall of the second groove 151 cooperate to define a card slot 16.

[0082] It can be understood that the first clamping block 14 and the second clamping block 15 are independent modules and can be manufactured separately, thereby reducing the manufacturing difficulty and manufacturing cost of the first clamp 11 and the second clamp 12 .

[0083] It should be noted that the specific shapes of the first groove 141 and the second groove 151 can be designed according to the specific structure of the curling edge of the clamp, so that the curling edge can be clamped in the slot 16 and will not fall off, thereby further increasing the working stability of the testing device 100.

[0084] In the above technical solution, by providing the first clamp block 14 and the second clamp block 15 , the production difficulty of the first clamp 11 and the second clamp 12 can be reduced, thereby reducing the production cost of the entire clamping mechanism 10 and improving the production rate of the entire clamping mechanism 10 .

[0085] In some embodiments, Figure 1-Figure 5 As shown, the first clamping block 14 and the second clamping block 15 can be movably connected to adjust the cross-sectional size of the slot 16 and / or adjust the opening width of the slot 16 .

[0086] It can be understood that in this embodiment, the size of the internal space or opening position of the slot 16 can be controlled by changing the relative position between the first clamp block 14 and the second clamp block 15, so that the slot 16 can be adapted to the curling of clamps of various specifications, thereby increasing the adaptability of the test device 100 of the present application.

[0087] It should be noted that there are many forms of movable connection, such as hinge connection, sliding connection, bolt connection, etc.

[0088] In the above technical solution, the first clamp block 14 and the second clamp block 15 are movably connected to adjust the cross-sectional size of the slot 16 and / or adjust the opening width of the slot 16, so that the slot 16 can adapt to the curling of clamps of various specifications, thereby increasing the adaptability of the test device 100 of the present application.

[0089] In some embodiments, Figure 1-Figure 5As shown, any one of the first clamp 11 and the second clamp 12 further includes: a first connecting member 18 , and the first clamp block 14 is connected to the second clamp block 15 via the first connecting member 18 , so that the second clamp block 15 is movable relative to the first clamp block 14 .

[0090] It is understandable that the first connecting member 18 acts as a bridge to connect the first clamp block 14 and the second clamp block 15 together, ensuring that the two work as a whole while allowing relative movement. That is to say, in this embodiment, the test device 100 realizes the movable connection between the first clamp block 14 and the second clamp block 15 by adding an external connection structure, thereby eliminating the need for complex design of the first clamp block 14 or the second clamp block 15, thereby simplifying the structure of the first clamp block 14 and the second clamp block 15, thereby reducing the difficulty of producing the first clamp 11 and the second clamp 12.

[0091] The phrase “the second clamping block 15 is movable relative to the first clamping block 14 ” is intended to indicate that the second clamping block 15 can move or rotate relative to the first clamping block 14 within a certain range, so that the cross-sectional size and opening width of the slot 16 can be adjusted.

[0092] It should be noted that the first connecting member 18 may include multiple types. For example, the first connecting member 18 may be a rotating shaft or a hinge.

[0093] In the above technical solution, by setting the first connecting member 18 to realize the movable connection between the first clamp block 14 and the second clamp block 15, the structural complexity of the first clamp block 14 and the second clamp block 15 can be reduced, and then the production difficulty of the first clamp 11 and the second clamp 12 can be reduced, and then the production cost of the entire clamping mechanism 10 can be reduced, thereby improving the production rate of the entire clamping mechanism 10.

[0094] In some embodiments, Figure 1-Figure 4 As shown, the first connecting member 18 is formed as a rotating shaft, the first connecting member 18 is connected to one of the first clamping block 14 and the second clamping block 15, and the other one is formed with an axial hole, and the rotating shaft is rotatably fitted in the axial hole.

[0095] It is understandable that if the rotating shaft is connected to the first clamping block 14 , the second clamping block 15 is provided with a shaft hole matching therewith; if the rotating shaft is connected to the second clamping block 15 , the first clamping block 14 is formed with a shaft hole matching therewith.

[0096] In the above technical solution, by forming the first connecting member 18 into a rotating shaft and utilizing the cooperation of the rotating shaft and the axial hole to realize the movable connection between the first clamp block 14 and the second clamp block 15, it helps to achieve a more compact mechanical design. At the same time, the structure of the rotating shaft and the axial hole is relatively simple, which can also reduce the operating difficulty and production cost of the testing device 100.

[0097] In some embodiments, the first connecting member 18 is a first elastic member.

[0098] Specifically, the first elastic member itself has an elastic deformation function, thereby allowing the second clamping block 15 to rotate at a small angle relative to the first clamping block 14 to a certain extent. Among them, this rotation is not achieved by rigid shaft-hole matching, but relies on the bending or torsional characteristics of the elastic member itself.

[0099] It should be noted that the first elastic member may be a spring, a rubber block, a spring sheet or other elastic material or component.

[0100] In the above technical solution, by setting the first connecting member 18 as the first elastic member, the overall structure of the testing device 100 of the present application can be further simplified, thereby further reducing the production cost of the testing device 100.

[0101] In some embodiments, Figure 1-Figure 5 As shown, any one of the first clamp 11 and the second clamp 12 further includes: a first push rod 17 , and the first push rod 17 is suitable for driving the second clamping block 15 to rotate around the first connecting member 18 .

[0102] It is understandable that the main function of the first push rod 17 is to drive the second clamping block 15 to rotate around the first connecting member 18 (such as a hinge or other form of rotating axis) by applying force, wherein such rotation can change the position of the second clamping block 15, thereby adjusting the opening width or shape of the slot 16.

[0103] In the above technical solution, by setting the first push rod 17, the opening width or cross-sectional size of the card slot 16 can be adjusted, so that the test device 100 can adapt to clamps of various specifications, thereby clamping secondary batteries of different specifications. At the same time, the structure of the first push rod 17 is relatively simple and easy to operate. Therefore, the operating steps of the test device 100 can be simplified and the convenience of operating the test device 100 can be improved.

[0104] In some embodiments, the first clamping block 14 is formed with a first through hole penetrating the first clamping block 14 along a third direction, and the first push rod 17 passes through the first through hole and is connected to one end of the second clamping block 15, wherein the third direction intersects with both the first direction and the second direction.

[0105] Among them, the design of the first through hole allows the first push rod 17 to directly pass through the first clamp block 14, and then connect to one end of the second clamp block 15, and control the second clamp block 15 to rotate around the first connecting member 18. In this way, the structural layout of the entire test device 100 can be optimized, and the operating difficulty of the entire test device 100 can be reduced, thereby improving the operability of the test device 100.

[0106] Optionally, the first through hole is disposed at an end away from the first groove 141 , so that the interference of the first push rod 17 on the clamp and the secondary battery in the clamp can be effectively reduced, thereby improving the working reliability of the testing device 100 .

[0107] In the above technical solution, by forming a first through hole that passes through the first clamp block 14 along a third direction in the first clamp block 14, and the first push rod 17 passes through the first through hole and is connected to one end of the second clamp block 15, the structural layout of the entire test device 100 can be optimized, and the operating difficulty of the entire test device 100 can be reduced, thereby improving the operability of the test device 100.

[0108] In some embodiments, the first through hole is formed as a threaded hole, and the first push rod 17 has a first threaded portion extending along the axis, and the first threaded portion is threadedly fitted in the threaded hole.

[0109] It is understandable that the outer surface of the first push rod 17 is processed with a thread, called a first threaded portion, which can match the internal thread in the threaded hole. When the first push rod 17 is rotated, the first push rod 17 can be moved forward or backward along the axis direction, thereby driving the second clamping block 15 to rotate around the first clamping block 14. Among them, the threaded connection provides a very high positioning accuracy, so that the first push rod 17 and the first clamping block 14 are threadedly matched, which can improve the precise control of the position of the second clamping block 15 and the stable force transmission.

[0110] In the above technical solution, the first through hole is formed as a threaded hole by setting the first through hole, and the first push rod 17 has a first threaded portion extending along the axis, and the first threaded portion is threadedly engaged in the threaded hole, which can improve the precise control of the position of the second clamping block 15 and the stable force transmission by the first push rod 17, thereby improving the adaptability of the slot 16 and the curling edge.

[0111] In some embodiments, Figure 1-Figure 3 As shown, the clamping mechanism 10 further includes: a first base 13, the first base 13 is fixedly connected to the first clamp 11, and a driving mechanism 20 is connected to the first base 13 for driving the first base 13 to move along a first direction.

[0112] It can be understood that the driving mechanism 20 can realize the movement of the first clamp 11 along the first direction by driving the first base 13 to move along the first direction. As a result, the vibration of the driving mechanism 20 on the first clamp 11 during operation can be reduced, and the stability of the first clamp 11 during operation can be improved, thereby improving the clamping stability of the clamping mechanism 10.

[0113] In the above technical solution, by providing the first base 13 , the vibration of the driving mechanism 20 on the first clamp 11 during operation can be reduced, thereby improving the stability of the first clamp 11 during operation, thereby improving the clamping stability of the clamping mechanism 10 .

[0114] In some embodiments, Figure 1-Figure 3 and Figure 5 As shown, the driving mechanism 20 includes: a driving member 21, which is a driving motor or a driving cylinder. The driving member 21 is connected to the first base 13 and is used to drive the first base 13 to move along the first direction.

[0115] It can be understood that, in some embodiments, the driving member 21 is a driving motor, wherein the driving motor can achieve high-precision torque control, thereby improving the accuracy of the test device 100 during operation, thereby improving the operational reliability of the test device 100.

[0116] In other embodiments, the driving member 21 is a driving cylinder, wherein the driving cylinder has a relatively simple structure and low cost. Therefore, the driving member 21 is a driving cylinder, which can reduce the cost of the entire testing device 100.

[0117] In the above technical solution, by providing the driving member 21 , the first base 13 can be driven to move along the first direction, thereby driving the first clamp 11 to move along the first direction, so that the test device 100 can clamp and release the secondary battery.

[0118] In some embodiments, the driving member 21 is a driving cylinder, and the intake pressure and / or intake flow rate of the driving cylinder is adjustable.

[0119] The cylinder is a cylindrical metal part that guides the piston to perform linear reciprocating motion in the cylinder. The function of the cylinder is to convert the pressure energy of compressed air into mechanical energy to drive the piston to perform linear reciprocating motion. The driving cylinder has a simple structure, is easy to maintain and install, has low cost, high reliability, and high output force, thereby meeting the force required to drive the first base 13 to move.

[0120] The air intake pressure and / or air flow of the driving cylinder is adjustable. It can be understood that in some specific embodiments, the air intake pressure or air intake flow of the driving cylinder is adjustable, and in other specific embodiments, both the driving cylinder and the air intake flow are adjustable.

[0121] Among them, adjusting the intake pressure can change the thrust or pull generated by the driving cylinder, and then adjust the clamping force of the clamping mechanism 10, so that the clamping mechanism 10 can neither damage the clamping member and the secondary battery inside the clamping member, but can firmly clamp the clamping member and the secondary battery inside the clamping member. The intake flow rate mainly affects the movement speed of the cylinder piston. Therefore, the movement speed of the first base 13 can be controlled by controlling the size of the intake flow rate, so that the speed of opening and clamping the clamping member of the test device 100 can be controlled, reducing the operating risk of the operator.

[0122] Optionally, the driving mechanism 20 further includes: a regulating valve 24 for adjusting the pressure and flow of air entering the cylinder. Common regulating valves 24 include pressure reducing valves, proportional valves, and the like.

[0123] Optionally, the driving mechanism 20 also includes: a starting switch, which is used to control the on and off of the air source of the driving cylinder, wherein the starting switch is in the form of a pedal, and the user only needs to step on the pedal to start or stop the action of the driving cylinder, thereby, both hands can continue to perform other operations, thereby improving work efficiency.

[0124] In the above technical solution, by setting the driving member 21 as a driving cylinder and the intake pressure and / or flow rate are adjustable, the cost of the entire testing device 100 can be reduced, and the clamping force and running speed of the entire testing device 100 can be controlled, thereby ensuring the normal operation of the entire testing device 100 while reducing the operating risks of the operator.

[0125] In some embodiments, Figure 1 and Figure 5 As shown, the driving mechanism 20 further includes a driving rod 22 , which is connected between the driving member 21 and the first base 13 .

[0126] The main function of the driving rod 22 is to effectively transmit the power generated by the driving member 21 to the first base 13. Specifically, when the testing device 100 is working, the driving member 21 drives the first base 13 to move along the first direction through the movement of the driving rod 22, thereby realizing the movement of the first fixture 11 along the first direction.

[0127] It should be noted that the driving member 21 is a driving cylinder, and the driving rod 22 is a piston rod that cooperates with the driving cylinder. The piston rod has a simple structure, high strength and wear resistance, and is light and low in cost. Therefore, using the piston rod as the driving rod 22 can increase the service life of the driving mechanism 20 and reduce the production cost of the driving mechanism 20.

[0128] In the above technical solution, by providing the driving rod 22, the force transmission path is optimized, and effective force transmission and motion conversion are achieved, thereby achieving linear motion of the first base 13 along the first direction.

[0129] In some embodiments, Figure 1 and Figure 5 As shown, the driving rod 22 extends along the first direction, a first end of the driving rod 22 is connected to the driving member 21 , and a second end of the driving rod 22 is slidably connected to the first base 13 .

[0130] It can be understood that the first base 13 is slidable along the first direction on the driving rod 22, so that the position of the first base 13 can be manually adjusted. Furthermore, when the clamping member needs to be clamped in the slot 16 before the test device 100 works, the first clamp 11 can be manually moved away from the second clamp 12, so that a certain space is formed between the first clamp 11 and the second clamp 12, which is conducive to the placement of the clamping member; at the same time, when the test device 100 fails during operation, the clamping member can also be manually released, thereby effectively reducing the probability of damage to the clamping member and the internal clamped objects.

[0131] The driving mechanism 20 further includes: a second elastic member 23 , one end of the second elastic member 23 is connected to the driving member 21 , and the other end of the second elastic member 23 is connected to the first base 13 .

[0132] It can be understood that the second elastic member 23 is arranged between the driving member 21 and the first base 13. When the driving member 21 drives the first base 13 to move toward the second clamp 12, since the first base 13 is slidable on the driving rod 22, the first base 13 will generate a force in the direction away from the first clamp 11. Therefore, the first base 13 will generate an extrusion force on the second elastic member 23, and the second elastic member 23 will generate an opposite force on the first base 13, thereby realizing that the driving member 21 drives the first base 13 to drive the first clamp 11 to move toward the second clamp 12, thereby realizing the clamping of the clamping member.

[0133] It should be noted that the testing device 100 of the present application can be used to release the secondary battery or clamp the secondary battery. Therefore, the second elastic member 23 is arranged between the driving member 21 and the first base 13 and is mainly used for the clamping process.

[0134] In the above technical solution, by setting the second end of the driving rod 22 to be slidably connected to the first base 13, the test device 100 of the present application can manually adjust the position of the first base 13. Then, when the clamping piece needs to be clamped in the card slot 16 before the test device 100 works, the first clamp 11 can be manually moved away from the second clamp 12, so that a certain space is formed between the first clamp 11 and the second clamp 12, which is conducive to the placement of the clamping piece; at the same time, when the test device 100 fails during operation, the clamping piece can also be manually released, thereby effectively reducing the probability of damage to the clamping piece and the internal clamped object. In addition, by setting the second elastic member 23, this embodiment can also ensure that the test device 100 of the present application can achieve the clamping work of the clamping piece.

[0135] In some embodiments, Figure 5 As shown, the first base 13 has a second through hole extending along the first direction, and the second end extends out of the first base 13 through the second through hole. A limiting portion 221 is provided at the second end of the driving rod 22. The limiting portion 221 and the second elastic member 23 are respectively arranged on both sides of the first base 13 in the first direction to limit the active position of the first base 13 on the driving rod 22.

[0136] Specifically, the limiting portion 221 is arranged on the side of the first base 13 away from the driving member 21, so that the first base 13 can be effectively prevented from sliding off the driving rod 22 during movement, thereby improving the operating reliability of the first base 13 and ensuring the normal operation of the testing device 100.

[0137] In the above technical solution, by providing the limiting portion 221 , the first base 13 can be effectively prevented from sliding off the driving rod 22 during movement, thereby improving the operating reliability of the first base 13 and ensuring the normal operation of the testing device 100 .

[0138] In some embodiments, Figure 1-Figure 2 and Figure 5 As shown, the testing device 100 further includes: a guide rail 50 extending along a first direction, a first fixture 11 arranged on the guide rail 50 , and the first fixture 11 is slidable along the guide rail 50 in the first direction.

[0139] It can be understood that the guide rail 50 guides the first clamp 11 so that the first clamp 11 can slide smoothly in the first direction without deviation.

[0140] In the above technical solution, by setting the guide rail 50, the moving trajectory of the first clamp 11 can be further limited, thereby improving the stability and accuracy of the first clamp 11 moving along the first direction, so that the test device 100 in the present application can quickly and accurately open and close the clamp, thereby improving the battery testing efficiency; at the same time, the structure of the guide rail 50 is relatively simple, thereby improving the convenience of installation and maintenance of the test device 100.

[0141] In some embodiments, Figure 1-Figure 2 and Figure 5 As shown, the testing device 100 also includes: a first mounting seat 30 and a second mounting seat 40 arranged at intervals along a first direction, the driving mechanism 20 and the second fixture 12 are arranged on the first mounting seat 30 and the second mounting seat 40 respectively, and the first fixture 11 is arranged between the first mounting seat 30 and the second mounting seat 40.

[0142] Among them, “the driving mechanism 20 and the second clamp 12 are respectively arranged on the first mounting seat 30 and the second mounting seat 40, and the first clamp 11 is arranged between the first mounting seat 30 and the second mounting seat 40” is intended to indicate that, in the present embodiment, the first clamp 11 is a movable part, which can move between the first mounting seat 30 and the second mounting seat 40, and the second clamp 12 is formed as a fixed end. In this way, the complexity of the operation of the driving mechanism 20 can be reduced, and then the operational convenience of the test device 100 can be improved; at the same time, the rationality of the layout of the test device 100 can be improved, and the overall size of the test device 100 can be reduced.

[0143] In addition, the first mounting seat 30 and the second mounting seat 40 also provide a stable mounting platform for the driving mechanism 20 and the second clamp 12, thereby enhancing the stability of the entire testing device 100, so that the testing device 100 of the present application will not shake or deviate during the entire operation process, thereby improving the working reliability of the testing device 100.

[0144] In the above technical scheme, by setting the first mounting seat 30 and the second mounting seat 40, the stability of the entire test device 100 can be enhanced, so that the test device 100 of the present application will not shake or shift during the entire operation process, thereby improving the working reliability of the test device 100; at the same time, by setting the first clamp 11 to be arranged between the first mounting seat 30 and the second mounting seat 40, the rationality of the layout of the test device 100 can also be improved, and the overall size of the test device 100 can be reduced.

[0145] The following will refer to Figure 1-Figure 5 A secondary battery testing device 100 according to a specific embodiment of the present application is described.

[0146] Reference Figure 1The secondary battery testing device 100 includes: a clamping member, a clamping mechanism 10 and a driving mechanism 20. The clamping member has an open end, and the clamping member is suitable for clamping the secondary battery through the open end, and the open end is respectively formed with curling edges on both sides in the first direction; the clamping mechanism 10 includes: a first clamp 11 and a second clamp 12, the first clamp 11 and the second clamp 12 are arranged at intervals along the first direction, and the first clamp 11 and the second clamp 12 are respectively configured to be suitable for clamping two curling edges of the clamping member. The driving mechanism 20 is connected to the first clamp 11, and is used to make the first clamp 11 relatively move along the first direction.

[0147] Specifically, any one of the first clamp 11 and the second clamp 12 is formed with a slot 16, and the slot 16 extends along the second direction. The opening of the slot 16 on the first clamp 11 and the opening of the slot 16 on the second clamp 12 are arranged opposite to each other in the first direction. The first clamp 11 and the second clamp 12 are both suitable for holding the curled edge in the slot 16, wherein the second direction intersects with the first direction.

[0148] Either the first clamp 11 or the second clamp 12 includes: a first clamp block 14 and a second clamp block 15 , the first clamp block 14 is formed with a first groove 141 , the second clamp block 15 is formed with a second groove 151 , and the inner wall of the first groove 141 and the inner wall of the second groove 151 cooperate to define a card slot 16 .

[0149] Each of the first clamp 11 and the second clamp 12 further includes a first connecting member 18, through which the first clamp block 14 is connected to the second clamp block 15, so that the second clamp block 15 is movable relative to the first clamp block 14. The first connecting member 18 is formed as a rotating shaft, the first connecting member 18 is connected to the first clamp block 14, and the second clamp block 15 is formed with an axial hole matched with the rotating shaft, and the rotating shaft is rotatably matched in the axial hole to adjust the cross-sectional size of the card slot 16 and / or adjust the opening width of the card slot 16.

[0150] Each of the first clamp 11 and the second clamp 12 further includes a first push rod 17, which is suitable for driving the second clamp block 15 to rotate around the first connecting member 18. The first clamp block 14 is formed with a threaded hole penetrating the first clamp block 14 along the third direction, the first push rod 17 has a first threaded portion extending along the axis, the first threaded portion is threadedly engaged in the threaded hole, and one end of the first push rod 17 away from the first clamp block 14 abuts against one end of the second clamp block 15.

[0151] The clamping mechanism 10 further includes: a first base 13, the first base 13 is fixedly connected to the first clamp 11, and a driving mechanism 20 is connected to the first base 13, and is used to drive the first base 13 to move along the first direction.

[0152] The driving mechanism 20 includes: a driving member 21 and a driving rod 22, wherein the driving member 21 is a driving cylinder, and the air intake pressure and air intake flow of the driving cylinder are adjustable; the driving rod 22 extends along a first direction, the first end of the driving rod 22 is connected to the driving member 21, and the second end of the driving rod 22 is slidably connected to the first base 13.

[0153] Specifically, the first base 13 has a second through hole extending along the first direction, and the second end extends out of the first base 13 through the second through hole. A limiting portion 221 is provided at the second end of the driving rod 22. The limiting portion 221 and the second elastic member 23 are respectively arranged on both sides of the first base 13 in the first direction to limit the active position of the first base 13 on the driving rod 22.

[0154] The testing device 100 of the present application further includes: a guide rail 50 extending along a first direction, a first fixture 11 arranged on the guide rail 50 , and the first fixture 11 is slidable along the guide rail 50 in the first direction.

[0155] The testing device 100 of the present application further includes: a first mounting seat 30 and a second mounting seat 40 arranged at intervals along a first direction, a driving mechanism 20 and a second fixture 12 arranged on the first mounting seat 30 and the second mounting seat 40 respectively, and a first fixture 11 arranged between the first mounting seat 30 and the second mounting seat 40.

[0156] In the above technical solution, by providing a clamping mechanism 10 and a driving mechanism 20, the test device 100 of the present application can realize automatic opening and clamping operations of the clamping member, thereby improving the rate at which the test device clamps or replaces secondary batteries, while also reducing the risk of directly operating the test device by hand.

[0157] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A secondary battery testing device, characterized in that: The testing device comprises: A clamping member, wherein the clamping member has an open end, and the clamping member is suitable for clamping the secondary battery through the open end, and the open end is respectively formed with curling edges on both sides in a first direction; A clamping mechanism (10), the clamping mechanism (10) comprising: a first clamp (11) and a second clamp (12), the first clamp (11) and the second clamp (12) being arranged at intervals along the first direction, the first clamp (11) and the second clamp (12) being respectively configured to clamp the two curling edges of the clamping member; A driving mechanism (20), the driving mechanism (20) being connected to the first clamp (11) and / or the second clamp (12), and being used to enable the first clamp (11) and the second clamp (12) to move relative to each other along the first direction.

2. The secondary battery testing device according to claim 1, characterized in that: Any one of the first clamp (11) and the second clamp (12) is formed with a slot (16), the slot (16) extending along a second direction, an opening of the slot (16) on the first clamp (11) and an opening of the slot (16) on the second clamp (12) are arranged opposite to each other in the first direction, and the first clamp (11) and the second clamp (12) are both suitable for clamping the curled edge in the slot (16), wherein the second direction intersects with the first direction.

3. The secondary battery testing device according to claim 2, characterized in that: Either the first clamp (11) or the second clamp (12) comprises: a first clamp block (14) and a second clamp block (15); the first clamp block (14) is formed with a first groove (141); the second clamp block (15) is formed with a second groove (151); the inner wall of the first groove (141) and the inner wall of the second groove (151) cooperate to define the clamping slot (16).

4. The secondary battery testing device according to claim 3, characterized in that: The first clamping block (14) and the second clamping block (15) can be movably connected to adjust the cross-sectional size of the clamping slot (16) and / or adjust the opening width of the clamping slot (16).

5. The secondary battery testing device according to claim 4, characterized in that: The first clamp (11) and the second clamp (12) also include a first connecting member (18), and the first clamp block (14) is connected to the second clamp block (15) via the first connecting member (18), so that the second clamp block (15) is movable relative to the first clamp block (14).

6. The secondary battery testing device according to claim 5, characterized in that: The first connecting member (18) is formed as a rotating shaft, the first connecting member (18) is connected to one of the first clamping block (14) and the second clamping block (15), and the other is formed with an axial hole, and the rotating shaft is rotatably fitted in the axial hole.

7. The secondary battery testing device according to claim 5, characterized in that: The first connecting member (18) is a first elastic member.

8. The secondary battery testing device according to any one of claims 5 to 7, characterized in that: The first clamp (11) and the second clamp (12) both further comprise a first push rod (17), wherein the first push rod (17) is suitable for driving the second clamping block (15) to rotate around the first connecting member (18).

9. The secondary battery testing device according to claim 8, characterized in that: The first clamping block (14) is formed with a first through hole penetrating the first clamping block (14) along a third direction, and the first push rod (17) passes through the first through hole and is connected to one end of the second clamping block (15), wherein the third direction intersects with both the first direction and the second direction.

10. The secondary battery testing device according to claim 9, characterized in that: The first through hole is formed as a threaded hole, and the first push rod (17) has a first threaded portion extending along the axis, and the first threaded portion is threadedly fitted in the threaded hole.

11. The secondary battery testing device according to claim 1, characterized in that: The clamping mechanism (10) further comprises: a first base (13), the first base (13) being fixedly connected to the first clamp (11), and the driving mechanism (20) being connected to the first base (13) and being used for driving the first base (13) to move along the first direction.

12. The secondary battery testing device according to claim 11, characterized in that: The driving mechanism (20) comprises: a driving member (21), wherein the driving member (21) is a driving motor or a driving cylinder, and the driving member (21) is connected to the first base (13) and is used to drive the first base (13) to move along the first direction.

13. The secondary battery testing device according to claim 12, characterized in that: The driving member (21) is a driving cylinder, and the air intake pressure and / or air intake flow rate of the driving cylinder is adjustable.

14. The secondary battery testing device according to claim 13, characterized in that: The driving mechanism (20) further comprises: a driving rod (22), wherein the driving rod (22) is connected between the driving member (21) and the first base (13).

15. The secondary battery testing device according to claim 14, characterized in that: The driving rod (22) extends along the first direction, a first end of the driving rod (22) is connected to the driving member (21), and a second end of the driving rod (22) is slidably connected to the first base (13). The driving mechanism (20) further comprises: a second elastic member (23), one end of the second elastic member (23) being connected to the driving member (21), and the other end of the second elastic member (23) being connected to the first base (13).

16. The secondary battery testing device according to claim 15, characterized in that: The first base (13) has a second through hole extending along the first direction, the second end passes through the second through hole and extends out of the first base (13), the second end of the driving rod (22) is provided with a limiting portion (221), the limiting portion (221) and the second elastic member (23) are respectively arranged on both sides of the first base (13) in the first direction, so as to limit the movable position of the first base (13) on the driving rod (22).

17. The secondary battery testing device according to claim 1, characterized in that: Also includes: A guide rail (50), the guide rail (50) extending along the first direction, the first clamp (11) being arranged on the guide rail (50), and the first clamp (11) being slidable along the guide rail (50) in the first direction.

18. The secondary battery testing device according to claim 1, characterized in that: Also includes: A first mounting seat (30) and a second mounting seat (40) are arranged at intervals along the first direction, the driving mechanism (20) and the second clamp (12) are arranged on the first mounting seat (30) and the second mounting seat (40) respectively, and the first clamp (11) is arranged between the first mounting seat and the second mounting seat (40).

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