Testing device

Abstract

The utility model discloses a testing device, which relates to the technical field of batteries and comprises a base. The first detection module is arranged on the base and is used for detecting the internal resistance of a first battery with a first shape; the second detection module is arranged on the base and is used for detecting the internal resistance of a second battery with a second shape; wherein the first shape is different from the second shape. According to the technical scheme provided by the utility model, the technical problem that the existing internal resistance testing device can only independently test a cylindrical battery cell or a soft package battery cell and cannot meet the requirements of testing various battery models is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field, especially relate to a testing device. BACKGROUND

[0002] Battery internal resistance is an important index for measuring battery performance, which can more accurately evaluate battery performance and provide important support for battery management and maintenance. The internal resistance of the battery core needs to be tested during preparation. The internal resistance test is generally performed by an internal resistance testing device. The internal resistance testing device is provided with conductive test pins. During testing, the positive and negative electrodes of the battery core are respectively in conductive contact with the two conductive test pins. The battery core is connected to the test circuit, and then the internal resistance of the battery core can be tested according to the voltage and current.

[0003] However, the existing internal resistance testing device can only test cylindrical battery cores or soft package battery cores, and cannot meet the testing requirements of various battery models. UTILITY MODEL CONTENTS

[0004] The utility model discloses a testing device, which aims to solve the technical problem that the existing internal resistance testing device can only test cylindrical battery cores or soft package battery cores, and cannot meet the testing requirements of various battery models.

[0005] To achieve the above purpose, the utility model provides a testing device, which comprises:

[0006] A base;

[0007] A first detection module arranged on the base and used for detecting the internal resistance of a first battery with a first shape; and

[0008] A second detection module arranged on the base and used for detecting the internal resistance of a second battery with a second shape;

[0009] Wherein, the first shape and the second shape are different.

[0010] In an embodiment, the first detection module is provided with a support platform arranged on the base, and the support platform is used for supporting at least one first battery with a flat side surface.

[0011] In an embodiment, the first battery has two tab ears arranged at intervals, and the first detection module is provided with two groups of first test pins corresponding to the two tab ears respectively and insulated from each other.

[0012] Each group of first test pins comprises a first test sub-pin and a second test sub-pin, and the first test sub-pin and the second test sub-pin cooperate to clamp the tab ear to connect the first battery to the internal resistance detection circuit.

[0013] The first test sub-pin and the second test sub-pin have an extension length greater than or equal to 7.5 cm.

[0014] In an embodiment, the support platform is provided with a positioning strip for positioning the first battery, so that two tabs of the first battery correspond to two groups of the first test pins respectively, and the mounting position of the positioning strip on the support platform is adjustable.

[0015] In an embodiment, the first detection module further comprises:

[0016] A lifting plate configured to perform lifting motion on the base; the first test sub-pin is mounted on the lifting plate, and the second test sub-pin is fixedly connected with the base; and

[0017] A driving member in driving connection with the lifting plate and used for driving the lifting plate to move towards the base, so that the two first test sub-pins move towards the two second test sub-pins to clamp the positive and negative tabs of the first battery.

[0018] In an embodiment, the first detection module further comprises a first sliding rail, and the lifting plate is slidingly mounted on the base through the first sliding rail; and / or,

[0019] The first detection module further comprises a second sliding rail and a buffer member, the first test sub-pin is slidingly connected with the lifting plate through the second sliding rail, one end of the buffer member is connected with the first test sub-pin, and the other end of the buffer member is connected with the lifting plate, and the buffer member is located on the side of the first test sub-pin away from the base.

[0020] In an embodiment, the buffer member comprises:

[0021] A fixed plate fixedly connected with the lifting plate;

[0022] A support column provided on the side of the fixed plate facing the base; and

[0023] A spring, the support column is provided with the spring on the outer periphery, and one end of the spring is connected with the fixed plate;

[0024] The first test sub-pin is slidingly sleeved on the outer periphery of the support column, and the spring is in abutment with the first test sub-pin.

[0025] In an embodiment, the second detection module is provided with a base, the base is provided on the base, the base is provided with an arc-shaped placement groove, and the arc-shaped placement groove is used for placing the second battery of a second shape.

[0026] In an embodiment, the second detection module further comprises a second test pin and a pushing member, opposite sides of the base are respectively provided with a second test pin, each second test pin is correspondingly provided with a pushing member, and two pushing members are respectively in driving connection with two second test pins to drive two second test pins to move towards the second battery, so that two second test pins are respectively in abutment with the positive electrode and the negative electrode of the second battery.

[0027] In an embodiment, the test device further comprises an internal resistance tester, the internal resistance tester is arranged on the base, and the first detection module and the second detection module are respectively in electrical connection with the internal resistance tester to share the internal resistance tester.

[0028] The test device further comprises a scanning instrument, the scanning instrument is in rotational connection with the base and is located between the first detection module and the second detection module, and is used to scan the code of the battery in a testing state.

[0029] In the technical scheme, the base is arranged to facilitate installation of the first detection module and the second detection module and provide support for the first detection module and the second detection module. The first detection module can be electrically connected with the electrode of the first battery, so that the internal resistance of the first battery can be detected. The second detection module is arranged to be electrically connected with the electrode of the second battery, so that the internal resistance of the second battery can be detected. In the embodiment, the batteries can include the first battery with the first shape and the second battery with the second shape according to different models. Thus, the first detection module and the second detection module can be selectively used according to the shape of the battery to be detected, so that a test device can meet the requirement of testing batteries of different models. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained according to the structures shown in the drawings without creative labor for those skilled in the art.

[0031] Figure 1 Structure diagram of the embodiment of the test device provided by the present application Figure 1 ;

[0032] Figure 2 Structure diagram of the embodiment of the test device provided by the present application Figure 2 ;

[0033] Figure 3The structure schematic diagram of the embodiment of the first detection module provided by the utility model is shown in the figure.

[0034] Figure 4 The structure schematic diagram of the embodiment of the buffer provided by the utility model is shown in the figure.

[0035] Figure 5 The structure schematic diagram of the embodiment of the second detection module provided by the utility model is shown in the figure.

[0036] Explanation of reference numerals:

[0037] 10, base; 20, first detection module; 21, support platform; 211, positioning strip; 22, first test foot; 221, first test subfoot; 222, second test subfoot; 23, lifting plate; 24, driving piece; 25, first sliding rail; 26, second sliding rail; 27, buffer; 271, fixed plate; 272, support column; 273, spring; 30, second detection module; 31, base; 32, second test foot; 33, pushing piece; 40, internal resistance tester; 50, scanning instrument.

[0038] The utility model discloses the realization, functional characteristics and advantages will be further explained with reference to the embodiment. Specific implementation

[0039] The technical scheme in the embodiment of the utility model will be described clearly and completely in the embodiment of the utility model, obviously, the described embodiment is only a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the scope of the utility model protection.

[0040] It needs to be explained that if the embodiment of the utility model has involved directionality indication (such as up, down, left, right, front, back), then the directionality indication is only used to explain the relative position relationship, movement condition etc. between the components in a certain specific posture, if the specific posture changes, then the directionality indication also changes accordingly.

[0041] In addition, if the description of "first", "second" and the like is involved in the embodiments of the utility model, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one feature. In addition, if "and / or" or "and / or" appears throughout the text, it means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, also not within the protection scope required by the utility model.

[0042] For the battery cell, in the process of preparation, the internal resistance test needs to be carried out, the internal resistance test is generally carried out through the internal resistance testing device, the internal resistance testing device is provided with the conductive test foot, during the test, the positive and negative poles of the battery cell are respectively in conductive contact with two conductive test feet, the battery cell is connected into the test circuit, and then the internal resistance of the battery cell can be tested according to the voltage and current. However, the existing internal resistance testing device can only test cylindrical battery cells or soft package battery cells, and cannot meet the demand of testing various battery models.

[0043] Therefore, the utility model embodiment provides a kind of testing device, sets two sets of test structure, one set of test structure is used for the internal resistance test of first battery, another set of test structure is used for the internal resistance test of second battery, can be according to battery model alternative use test structure and the battery to be detected electrically connected, to meet the demand of one testing device to test soft package, cylindrical, square and other various models is realized.

[0044] In order to better understand the above technical solutions, the above technical solutions will be described in detail below with reference to the drawings.

[0045] As Figure 1 , Figure 2 , Figure 3 Indicated, the utility model provides a kind of testing device, comprising:

[0046] Base 10;

[0047] First detection module 20, is located on base 10, and is used to detect the internal resistance of the first battery with the first shape;And

[0048] Second detection module 30, is located on base 10, and is used to detect the internal resistance of the second battery with the second shape;

[0049] Wherein, the first shape and the second shape are different.

[0050] In the technical scheme adopted in the embodiment, the base 10 is arranged to facilitate installation of the first detection module 20 and the second detection module 30 and provide support for the first detection module 20 and the second detection module 30. The first detection module 20 can be electrically connected with the electrode of the first battery, so as to detect the internal resistance of the first battery. The second detection module 30 is arranged to be electrically connected with the electrode of the second battery, so as to detect the internal resistance of the second battery. In the embodiment, the batteries can include the first battery with the first shape and the second battery with the second shape according to different models. Thus, according to the shape of the battery to be detected, the first detection module 20 and the second detection module 30 can be selectively used to be electrically connected with the battery to be detected, so as to meet the requirement that one testing device can test multiple models of batteries.

[0051] Specifically, the testing device includes the base 10, the first detection module 20 and the second detection module 30.

[0052] The base 10 is usually made of a solid material, such as metal or high-strength plastic, to ensure the stability and durability of the device and provide support. The first detection module 20 and the second detection module 30 can be respectively provided with an internal resistance tester 40 or an internal resistance testing function, and can respectively detect the internal resistance of the first battery and the second battery. It should be noted that the first battery has the first shape and the second battery has the second shape, and the first shape and the second shape are different. The first battery can be a soft package battery in a square shape, and the second battery can be a cylindrical battery.

[0053] Further, with reference to Figure 1 , Figure 2 In an embodiment of the utility model, the first detection module 20 is provided with a support platform 21, and the support platform 21 is arranged on the base 10. The support platform 21 is used to support at least one first battery with a flat side face.

[0054] In the technical scheme adopted in the embodiment, the support platform 21 is arranged to stably support the first battery, so as to ensure that the first battery does not shake during the testing process, thereby improving the accuracy and reliability of the testing. It can be understood that the first battery has at least one flat side face, which can provide better support.

[0055] Further, with reference to Figure 1 , Figure 2 In an embodiment of the utility model, the first battery has two tab ears arranged at intervals, and the first detection module 20 is provided with two groups of first test feet 22 corresponding to the two tab ears respectively and insulated from each other.

[0056] Each group of the first test feet 22 comprises a first test sub-foot 221 and a second test sub-foot 222, the first test sub-foot 221 and the second test sub-foot 222 cooperate to clamp the tab, so as to connect the first battery to the internal resistance detection circuit;

[0057] The first test sub-foot 221 and the second test sub-foot 222 have an extension length greater than or equal to 7.5 cm.

[0058] In the technical scheme adopted in this embodiment, the tab is an electrode lead-out part of the first battery, which is used to connect an external circuit. The first battery has two spaced-apart tabs, which are the positive tab and the negative tab of the first battery. Each group of the first test feet 22 in the first detection module 20 is used to electrically connect with one tab, so as to ensure that the first battery can be connected to the internal resistance detection circuit. Moreover, the two first test feet 22 are spaced apart, which can reduce the risk of short circuit. Specifically, each group of the first test feet 22 comprises a first test sub-foot 221 and a second test sub-foot 222, and the first test sub-foot 221 and the second test sub-foot 222 of each group can abut against the opposite sides of the tab, so as to clamp the tab, thereby ensuring that the first battery can be connected to the internal resistance detection circuit and can test the internal resistance of the first battery. It should be noted that the width of the tab is generally 0.5-1 cm, and the first test sub-foot 221 and the second test sub-foot 222 in this embodiment have an extension length greater than or equal to 7.5 cm, so that the first detection module 20 can be applied to the detection of more different width sizes of tabs and more different size intervals of tabs of the first battery.

[0059] Further, with reference to Figure 1 、 Figure 2 In an embodiment of the utility model, the supporting platform 21 is provided with a positioning strip 211, the positioning strip 211 is used for positioning the first battery, so that the two tabs of the first battery correspond to two groups of first test feet 22 respectively, and the installation position of the positioning strip 211 on the supporting platform 21 can be adjusted.

[0060] In the technical scheme adopted in the embodiment, the positioning strip 211 is arranged, so that the positive electrode lug of the first battery can be ensured to contact the first test pin 22 while the negative electrode lug of the first battery is prevented from contacting the first test pin 22 through the middle insulating partition. Similarly, the positioning strip 211 can also be arranged on one side of the negative electrode lug of the first battery, so that the negative electrode lug of the first battery can be ensured to contact the first test pin 22 while the positive electrode lug of the first battery is prevented from contacting the first test pin 22 through the middle insulating partition. In addition, the mounting position of the positioning strip 211 on the support platform 21 is adjustable, and the positioning strip 211 is connected with the support platform 21 through screw threads and positioning holes, so that the position of the positioning strip 211 can be adjusted according to the first battery of different sizes, thereby meeting the test of the first battery of different sizes. The positioning strip 211 can be movably connected with the support platform 21 through bolts, can be movably connected with the support platform 21 through magnetic attraction, or can be movably connected with the support platform 21 through buckle fixation, which is not limited herein.

[0061] Further, with reference to Figure 2 、 Figure 3 In an embodiment of the utility model, the first detection module 20 further comprises:

[0062] The lifting plate 23 is configured to make lifting movement on the base 10; the first test sub-pin 221 is installed on the lifting plate 23, and the second test sub-pin 222 is fixedly connected with the base 10; and

[0063] The driving part 24 is drivingly connected with the lifting plate 23, and is used for driving the lifting plate 23 to move towards the base 10, so that the two first test sub-pins 221 move towards the two second test sub-pins 222 to connect the positive electrode lug and the negative electrode lug of the first battery.

[0064] In the technical scheme adopted in the embodiment, the first detection module 20 can further comprise the lifting plate 23 and the driving part 24. The lifting plate 23 can make lifting movement along the vertical direction of the base 10, and can provide support for the first test sub-pin 221, so that the spacing between the first test sub-pin 221 and the second test sub-pin 222 is adjusted through the lifting movement. The driving part 24 can be a pneumatic cylinder, and the output end of the pneumatic cylinder is drivingly connected with the lifting plate 23. In the embodiment, the first battery is placed on the base 10, the positive and negative electrode lugs of the first battery are ensured to be aligned with the two second test sub-pins 222, the pneumatic cylinder is started, and the lifting plate 23 is moved towards the base 10. At this time, the first test sub-pin 221 moves along with the lifting plate 23 until the first test sub-pin 221 abuts against the electrode lug of the first battery. The first test sub-pin 221 and the second test sub-pin 222 can be in conductive contact with the electrode lug of the first battery, so that the first battery is connected to the internal resistance test circuit.

[0065] Further, with reference toFigure 2 、 Figure 3 In an embodiment of the utility model, the first detection module 20 further includes a first sliding rail 25, and the lifting plate 23 is slidably installed on the base 10 through the first sliding rail 25; and / or,

[0066] The first detection module 20 further includes a second sliding rail 26 and a buffer 27, the first test sub-leg 221 is slidably connected with the lifting plate 23 through the second sliding rail 26, one end of the buffer 27 is connected with the first test sub-leg 221, the other end is connected with the lifting plate 23, and the buffer 27 is located on the side of the first test sub-leg 221 away from the base 10.

[0067] In the technical scheme of the embodiment, the first sliding rail 25 can ensure that the lifting plate 23 moves accurately and stably. It can be understood that the first sliding rail 25 can be arranged perpendicularly to the horizontal plane of the base 10. The second sliding rail 26 and the buffer 27 can reduce the change of contact pressure between the first test sub-leg 221 and the first battery electrode tab, improve the stability of the test, and adapt to different thicknesses of the first battery electrode tab. It can be understood that when the first test sub-leg 221 abuts against the electrode tab of the first battery, the lifting plate 23 continues to descend, at this time, the first test sub-leg 221 will compress the buffer 27; when the first test sub-leg 221 separates from the electrode tab of the first battery, the first test sub-leg 221 will return to the initial position under the elastic force of the buffer 27. The buffer 27 is usually made of elastic materials such as elastic sheets, rubber or polyurethane, etc., has good elasticity and restoring force, and can effectively absorb impact force.

[0068] Further, with reference to Figure 3 、 Figure 4 In an embodiment of the utility model, the buffer 27 includes:

[0069] The fixed plate 271 is fixedly connected with the lifting plate 23;

[0070] The support column 272 is arranged on the side of the fixed plate 271 facing the base 10; and

[0071] The spring 273 is sleeved on the outer periphery of the support column 272, and one end of the spring 273 is connected with the fixed plate 271;

[0072] The first test sub-leg 221 is slidably sleeved on the outer periphery of the support column 272, and the spring 273 abuts against the first test sub-leg 221.

[0073] In the technical scheme adopted in this embodiment, the buffer 27 further comprises a fixing plate 271, a support column 272 and a spring 273. The fixing plate 271 can provide a stable platform for mounting the support column 272 and the spring 273. The support column 272 is used for supporting the spring 273 and providing a stable structure so that the first test sub-leg 221 can slide along the support column 272. The support column 272 passes through the spring 273 in the axial direction, and the spring 273 is sleeved on the outer circumferential surface of the support column 272. The spring 273 has opposite first and second ends, wherein the first end can be connected to the fixing plate 271, and the second end can be connected to the first test sub-leg 221 which is slidingly arranged on the support column 272. It can be understood that when the first test sub-leg 221 contacts the tab of the first battery, the spring 273 is compressed under force when the first test sub-leg 221 is continuously moved, which can ensure that the first test sub-leg 221 can provide stable contact pressure when contacting the tab of the first battery; when the first test sub-leg 221 is separated from the electrode of the first battery, the spring 273 returns to the initial state.

[0074] Further, with reference to Figure 1 、 Figure 2 and Figure 5 , in an embodiment of the utility model, the second detection module 30 is provided with a base 31 which is arranged on the base 10, and the base 31 is provided with an arc-shaped placing groove which is used for placing the second battery of the second shape.

[0075] In the technical scheme adopted in this embodiment, the base 31 can fix and support the second battery, ensuring the stability of the second battery during the test. The arc-shaped placing groove provided on the base 31 can use the shape of the cylindrical battery, which can ensure the position of the second battery during the test, and reduce the test error caused by the movement of the second battery.

[0076] Further, with reference to Figure 1 、 Figure 5 , in an embodiment of the utility model, the second detection module 30 further comprises a second test leg 32 and a pushing member 33, and the opposite sides of the base 31 are respectively provided with a second test leg 32, and each second test leg 32 is correspondingly provided with a pushing member 33, and the two pushing members 33 are drivingly connected with the two second test legs 32 to drive the two second test legs 32 to move towards the second battery, so that the two second test legs 32 abut against the positive electrode and the negative electrode of the second battery, respectively.

[0077] In the technical scheme adopted in this embodiment, the second detection module 30 further comprises a second test pin 32 and a pushing member 33. The second test pin 32 is used to contact the positive and negative poles of the second battery to connect the second battery to the internal resistance test circuit, so as to realize internal resistance test of the second battery. The pushing member 33 is used to drive the second test pin 32 to move towards the second battery, so as to ensure stable contact of the second test pin 32 with the electrode of the second battery. The pushing member 33 can be the air cylinder mentioned above, and is drivingly connected with the second test pin 32, so as to accurately control movement of the second test pin 32.

[0078] Further, with reference to Figure 1 、 Figure 2 In an embodiment of the utility model, the test device further comprises an internal resistance tester 40, the internal resistance tester 40 is arranged on the base 10, and the first detection module 20 and the second detection module 30 are electrically connected with the internal resistance tester 40 to share the internal resistance tester 40, and / or

[0079] The test device further comprises a scanning instrument 50, the scanning instrument 50 is rotationally connected with the base 10 and is located between the first detection module 20 and the second detection module 30 to scan the code of the battery in the test state.

[0080] In the technical scheme adopted in this embodiment, the testing device can further include an internal resistance tester 40, the first detection module 20 and the second detection module 30 can be electrically connected to the internal resistance tester 40 through a parallel circuit, a switching switch is arranged on the side of the internal resistance tester 40, the switching switch can include a first switch connected in series with the first detection module 20 and a second switch connected in series with the second detection module 30, one of the first switch and the second switch is electrically connected to the internal resistance tester 40, so that the first detection module 20 or the second detection module 30 is electrically connected to the internal resistance tester 40, and the effect of one machine for multiple tests is achieved. It can be understood that the internal resistance tester 40 can include a casing and an internal resistance testing assembly. The casing is used for protecting the internal components, and the first detection module 20 can be installed outside the casing to provide support for the first detection module 20 and save space. The internal resistance testing assembly is arranged inside the casing and is used for performing the core function of internal resistance testing, including signal generation, data acquisition and processing. It should be noted that the first test sub-pin 221 and the second test sub-pin 222 are electrically connected to the internal resistance testing assembly, and the second test pin 32 is electrically connected to the internal resistance testing assembly. In order to ensure that the internal resistance tester 40 can normally operate, a power supply can also be arranged and electrically connected to the internal resistance tester 40, which can provide stable power for the internal resistance tester 40. As long as the specific structure of the power supply can provide stable power, it is not limited here. In this embodiment, a scanning instrument 50 can also be arranged, which can quickly identify the battery code in the testing state, ensure that the test data of each battery can be accurately recorded and traced, and facilitate subsequent data analysis and management. The scanning instrument 50 can be rotatably connected to the base 10 through a multi-axis connecting rod, so that the scanning instrument 50 can be flexibly adjusted in position.

[0081] The above only describes exemplary embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation made by using the contents of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A test device, characterized by The application relates to a battery detection device. The device comprises: a base; a first detection module arranged on the base and used for detecting the internal resistance of a first battery with a first shape; a second detection module arranged on the base and used for detecting the internal resistance of a second battery with a second shape; wherein the first shape and the second shape are different.

2. The test device of claim 1, wherein, The first detection module is provided with a support platform arranged on the base, and the support platform is used for supporting at least one first battery with a plane side surface.

3. The test device of claim 2, wherein, The first battery has two tab electrodes arranged at intervals, and the first detection module is provided with two groups of first test pins corresponding to the two tab electrodes respectively and insulated from each other. Each group of the first test pins comprises a first test sub-pin and a second test sub-pin, and the first test sub-pin and the second test sub-pin cooperate to clamp the tab electrodes to connect the first battery to an internal resistance detection circuit. The extension lengths of the first test sub-pin and the second test sub-pin are greater than or equal to 7.5 cm.

4. The test device of claim 3, wherein, The support platform is provided with a positioning strip, and the positioning strip is used for positioning the first battery so that the two tab electrodes of the first battery correspond to the two groups of first test pins respectively, and the mounting position of the positioning strip on the support platform is adjustably arranged.

5. The test device of claim 3, wherein, The first detection module further comprises: a lifting plate configured to make lifting motion on the base; the first test sub-pin is mounted on the lifting plate, and the second test sub-pin is fixedly connected with the base; and a driving member drivingly connected with the lifting plate and used for driving the lifting plate to move towards the base so that the two first test sub-pins move towards the two second test sub-pins to clamp the positive and negative tab electrodes of the first battery.

6. The test device of claim 5, wherein, The first detection module further comprises a first sliding rail, and the lifting plate is slidingly mounted on the base through the first sliding rail; and / or the first detection module further comprises a second sliding rail and a buffer member, the first test sub-pin is slidingly connected with the lifting plate through the second sliding rail, one end of the buffer member is connected with the first test sub-pin, the other end of the buffer member is connected with the lifting plate, and the buffer member is located on the side of the first test sub-pin away from the base.

7. The test device of claim 6, wherein, The buffer member comprises: a fixed plate fixedly connected with the lifting plate; a support column arranged on the side of the fixed plate facing the base; and a spring, the outer circumferential surface of the support column is sleeved with the spring, and one end of the spring is connected with the fixed plate; wherein the first test sub-pin is slidingly sleeved on the outer circumferential surface of the support column, and the spring abuts against the first test sub-pin.

8. The test device of any one of claims 1 to 7, wherein, The second detection module is provided with a base arranged on the base, and the base is provided with an arc-shaped placement groove used for placing the second battery with the second shape.

9. The test device of claim 8, wherein, The second detection module further comprises a second test pin and a pushing member, opposite sides of the base are respectively provided with a second test pin, each second test pin is correspondingly provided with a pushing member, and two pushing members are respectively and drivably connected with two second test pins to drive two second test pins to move towards the second battery, so that two second test pins are respectively in abutment with the positive electrode and the negative electrode of the second battery.

10. The test device of any one of claims 1-7, wherein, The testing device further comprises an internal resistance tester, the internal resistance tester is arranged on the base, and the first detection module and the second detection module are electrically connected with the internal resistance tester to share the internal resistance tester; and / or, The testing device further comprises a scanning instrument, the scanning instrument is rotationally connected with the base and located between the first detection module and the second detection module, and is used to scan the battery code in a testing state.

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