Soft package battery cell testing device

Abstract

The utility model provides a soft package battery cell testing device. The soft package battery cell testing device comprises a first clamping plate and a second clamping plate which are detachably connected and used for clamping the first end of a soft package battery cell between the first clamping plate and the second clamping plate; the displacement measuring device and the first clamping plate or the second clamping plate are arranged in a spaced mode in the first direction, the displacement measuring device comprises a trigger part, the trigger part is used for making contact with the bottom, close to the second end, of the soft package battery cell, and the trigger part is flush with the top of the first clamping plate in the thickness direction of the first clamping plate; the first clamping plate and the displacement measuring device are connected to the base. The device is simple in structure and convenient to use, a measurement result displayed by the displacement measurement device can visually reflect the strength of the tested soft package battery cell, and a tester can conveniently record and arrange the strength of the soft package battery cell. Meanwhile, in the process of testing the strength of the soft package battery cell, the tested soft package battery cell cannot be damaged, the same soft package battery cell can be repeatedly tested, the test cost can be reduced, and the test safety is also improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a soft-pack battery cell testing device. Background Art

[0002] In the relevant technology, lithium-ion batteries, as an electrochemical energy storage device, play an important role in industrial development. According to the different packaging forms, lithium-ion batteries can be divided into three categories: soft-pack batteries, square-shell batteries and cylindrical batteries. Among them, soft-pack batteries have attracted much attention due to their relatively simple manufacturing process. Unlike square-shell and cylindrical batteries that use hard metal aluminum shells or steel shells as outer shells, the outer shell of the soft-pack battery cell in the soft-pack battery is an aluminum-plastic film. The thickness of the aluminum-plastic film is relatively small, generally about 0.1mm, and it is relatively soft, so it is difficult for the aluminum-plastic film to support the structure of the soft-pack battery cell itself.

[0003] In the process of assembling soft-pack cells into battery modules, the structural adhesive and thermal conductive adhesive will affect the shape of the soft-pack cells with low strength during the flow and curing process. If the strength of the soft-pack cells is too low, it will affect their performance and even bring safety hazards. Therefore, it is necessary to test the strength of the soft-pack cells before assembly. Utility Model Content

[0004] In view of this, the purpose of the present application is to provide a soft-pack battery cell testing device.

[0005] Based on the above-mentioned purpose, the present application provides a soft-pack battery cell testing device, including: a first clamping plate; a second clamping plate, arranged above the first clamping plate, the first clamping plate and the second clamping plate are detachably connected, and are used to clamp the first end of the soft-pack battery cell between the first clamping plate and the second clamping plate; a displacement measuring device, spaced apart from the first clamping plate or the second clamping plate along a first direction, the displacement measuring device including a triggering part, the triggering part is used to contact the bottom of the soft-pack battery cell near the second end, and the triggering part is flush with the top of the first clamping plate along the thickness direction of the first clamping plate; a base, the first clamping plate and the displacement measuring device are connected to the base.

[0006] Optionally, the first clamping plate includes a supporting surface in contact with the soft-pack battery cell; along the second direction, a positioning component is provided on at least one side of the first clamping plate, the positioning component extends out of the supporting surface along the thickness direction of the first clamping plate, and the side wall of the second clamping plate abuts against the positioning component; the second direction is perpendicular to the first direction.

[0007] Optionally, the positioning assembly includes at least two positioning blocks spaced apart along the first direction.

[0008] Optionally, a slide rail is provided at the bottom of the first clamping plate, the slide rail extends along a first direction, and the first clamping plate is slidably connected to the base via the slide rail.

[0009] Optionally, along the first direction, the base is provided with at least two support structures arranged at intervals, and the first clamping plate is slidably connected to the support structure via a slide rail arranged at the bottom.

[0010] Optionally, a slide groove slidably matched with the slide rail is provided on the top of the support structure, and the slide groove passes through the support structure along the first direction.

[0011] Optionally, a positioning assembly is provided on at least one side of the first clamping plate, and the positioning assembly is fixedly connected to the supporting structure.

[0012] Optionally, the base is rotatably connected to a rotating table, and the supporting structure is connected to the rotating table; the rotating table has a first state of driving the soft-pack battery cell between the first clamping plate and the second clamping plate away from the trigger part, and a second state of driving the soft-pack battery cell to contact the trigger part.

[0013] Optionally, along the first direction, the distance between the trigger portion and the first end is a, and the length of the soft-pack battery cell is b; wherein a is greater than or equal to 0.8b.

[0014] Optionally, a push-pull handle is provided at one end of the first clamping plate away from the displacement measuring device.

[0015] From the above, it can be seen that the soft-pack battery cell testing device of the present application clamps and fixes the first end of the soft-pack battery cell to be tested by the first clamp and the second clamp, and obtains the bending deformation of the soft-pack battery cell to be tested by the displacement measuring device, and the deformation can reflect the strength of the soft-pack battery cell to be tested. The present application has a simple structure and is easy to use. The measurement results displayed by the displacement measuring device can intuitively reflect the strength of the soft-pack battery cell to be tested, which is convenient for the tester to record and organize. At the same time, in the process of strength testing the soft-pack battery cell, the soft-pack battery cell to be tested will not be damaged, and the same soft-pack battery cell can be tested repeatedly, which helps to reduce the test cost and improve the test safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present application or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1This is a three-dimensional schematic diagram of the soft-pack battery cell testing device of the first structure of an embodiment of the present application after the soft-pack battery cell is installed;

[0018] Figure 2 This is a schematic diagram of the main view of the soft-pack battery testing device of the second structure of the embodiment of the present application after the soft-pack battery is installed;

[0019] Figure 3 It is a top view schematic diagram of the soft-pack battery cell testing device according to an embodiment of the present application after the soft-pack battery cell is installed;

[0020] Figure 4 A schematic diagram of the sliding fit between the first clamping plate and the supporting structure of the soft-pack battery cell testing device according to an embodiment of the present application;

[0021] Figure 5 It is a top view schematic diagram of the rotating table of the soft-pack battery cell testing device according to an embodiment of the present application in a first state.

[0022] Description of reference numerals:

[0023] 1. first splint; 101. supporting surface; 102. slide rail; 103. push-pull handle;

[0024] 2. Second splint; 201. Lifting handle;

[0025] 3. Soft-pack battery cell; 301. first end; 302. second end;

[0026] 4. displacement measuring device; 401. triggering unit;

[0027] 5. Positioning assembly; 501. Positioning block;

[0028] 6. base; 601. support structure; 602. slide;

[0029] 7. Turntable. DETAILED DESCRIPTION

[0030] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0031] It should be noted that the relative arrangement of the components, the numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise.

[0032] At the same time, it should be understood that for the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship.

[0033] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present application, its application, or uses.

[0034] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be the usual meanings understood by people with ordinary skills in the field to which the present application belongs. The "first", "second" and similar words used in the embodiments of the present application do not represent any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing in front of the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0035] Figure 1 FIG. 1 is a three-dimensional schematic diagram of the soft-pack battery test device after the soft-pack battery 3 is installed. Figure 1 An embodiment of the present application provides a soft-pack battery cell testing device, comprising: a first clamping plate 1; a second clamping plate 2, which is arranged above the first clamping plate 1, and the first clamping plate 1 and the second clamping plate 2 are detachably connected, and are used to clamp the first end 301 of the soft-pack battery cell 3 between the first clamping plate 1 and the second clamping plate 2; a displacement measuring device 4, which is spaced apart from the first clamping plate 1 or the second clamping plate 2 along a first direction.

[0036] Figure 2 FIG. 1 is a schematic diagram of the main view of the soft-pack battery test device after the soft-pack battery 3 is installed. Figure 2 The displacement measuring device 4 includes a triggering portion 401, which is used to contact the bottom of the soft-pack battery cell 3 near the second end, and the triggering portion 401 is flush with the top of the first clamping plate 1 along the thickness direction of the first clamping plate 1; the base 6, the first clamping plate 1 and the displacement measuring device 4 are connected to the base 6.

[0037] The first direction is Figure 1 In the X direction, the thickness direction of the first splint 1 is as follows Figure 1 The Z direction in .

[0038] Exemplarily, the first clamping plate 1 and the displacement measuring device 4 may be fixedly connected, detachably connected, or slidably connected to the base 6 .

[0039] Exemplarily, the first clamping plate 1 and the second clamping plate 2 can be detachably connected by plugging, snapping or by fasteners (such as bolts), which is not limited here.

[0040] When the first clamping plate 1 and the second clamping plate 2 are connected, the soft-pack battery cell 3 located between the two will be clamped and fixed by the two. Figure 1 When the first clamping plate 1 and the second clamping plate 2 are separated, the soft-packed battery cell 3 that has been tested can be taken out from between the two or the soft-packed battery cell 3 to be tested can be placed on the top of the first clamping plate 1 .

[0041] Exemplarily, the displacement measuring device 4 may be a device that measures displacement by pressing, such as a micrometer, a dial gauge, or a pressure sensor.

[0042] When the trigger part 401 of the displacement measuring device 4 is pressed and moved, the displacement measuring device 4 can display a value corresponding to the moving distance of the trigger part 401, which is the measurement result. When the external force pressing the trigger part 401 is eliminated, the trigger part 401 of the displacement measuring device 4 can automatically reset.

[0043] Before testing, the displacement measuring device 4 is firstly zeroed so that the current value displayed by the displacement measuring device 4 is 0.

[0044] Afterwards, the first clamping plate 1 and the second clamping plate 2 are separated, the first end 301 of the soft-packed battery cell 3 to be tested is placed flat on the top of the first clamping plate 1, and the position of the soft-packed battery cell 3 is adjusted. On the one hand, it is necessary to make the soft-packed battery cell 3 have a larger contact area with the first clamping plate 1 to ensure that the first clamping plate 1 and the second clamping plate 2 can reliably clamp the soft-packed battery cell 3; on the other hand, it is also necessary to make the trigger part 401 of the displacement measuring device 4 close to the second end 302 of the soft-packed battery cell 3 to ensure that the measurement result can reflect the strength of the soft-packed battery cell 3 to be tested.

[0045] After the adjustment is completed, the second clamping plate 2 is placed on the soft-pack battery core 3, and the second clamping plate 2 is connected to the first clamping plate 1. Figure 1 .

[0046] It should be noted that in Figure 2 In the embodiment, the second end 302 of the soft-packed battery cell 3 is supported upward by an external force so that the soft-packed battery cell 3 can be horizontal as a whole. If the external force acting on the second end 302 of the soft-packed battery cell 3 is eliminated, the soft-packed battery cell 3 will naturally bend downward.

[0047] like Figure 2 At this time, the first end 301 of the soft-pack battery cell 3 has been clamped and fixed by the first clamping plate 1 and the second clamping plate 2, and the top of the triggering part 401 of the displacement measuring device 4 is flush with the bottom of the first end 301 of the soft-pack battery cell 3.

[0048] During the test, the soft-pack battery cell 3 is first placed above the triggering part 401 of the displacement measuring device 4 and just in contact with the triggering part 401. Figure 2 After that, the external force is removed, and the first end 301 of the soft-pack battery cell 3 is in the vertical direction (such as Figure 2The first end 301 is kept still in the Z direction, and the second end 302 away from the first end 301 droops naturally. The whole soft-pack battery cell 3 is bent and deformed and presses the trigger part 401, so that the trigger part 401 moves in the vertical direction, and the displacement measuring device 4 displays the measurement result. The deformation amount of the tested soft-pack battery cell 3 can be known from the measurement result displayed by the displacement measuring device 4, and the deformation amount can reflect the strength of the soft-pack battery cell 3. For example, the smaller the deformation amount of the tested soft-pack battery cell 3, the greater the strength of the soft-pack battery cell 3; on the contrary, the greater the deformation amount of the tested soft-pack battery cell 3, the smaller the strength of the soft-pack battery cell 3.

[0049] The soft-pack battery cell testing device of the embodiment of the present application has a simple structure and is easy to use. The measurement results displayed by the displacement measuring device 4 can intuitively reflect the strength of the soft-pack battery cell 3 being tested, which is convenient for the tester to record and organize. At the same time, in the process of strength testing the soft-pack battery cell 3, the soft-pack battery cell 3 being tested will not be damaged, and the same soft-pack battery cell 3 can be repeatedly tested, which helps to reduce the test cost and improve the test safety.

[0050] like Figure 1 In some embodiments, the first clamping plate 1 includes a supporting surface 101 in contact with the soft-pack battery cell 3; along the second direction, a positioning component 5 is provided on at least one side of the first clamping plate 1, and the positioning component 5 extends out of the supporting surface 101 along the thickness direction of the first clamping plate 1, and the side wall of the second clamping plate 2 abuts against the positioning component 5; the second direction is perpendicular to the first direction.

[0051] Figure 3 Schematic diagram of the top view of the soft-pack battery test device after the soft-pack battery 3 is installed. The second direction is Figure 3 in the Y direction.

[0052] For example, the positioning components 5 can be provided in one group or two groups. Figure 3 When two groups of positioning components 5 are provided, the two groups of positioning components 5 are provided on opposite sides of the first clamping plate 1 along the second direction. When the second clamping plate 2 is placed above the first clamping plate 1, the second clamping plate 2 is located between the two groups of positioning components 5, and the two side walls of the second clamping plate 2 along the second direction are respectively in contact with the positioning components 5 on the same side.

[0053] For example, along the second direction, the outer contour size of the first clamping plate 1 and the outer contour size of the first clamping plate 1 may be the same. Figure 1 Taking the structure shown as an example, the width of the first clamping plate 1 is the same as the width of the second clamping plate 2 .

[0054] Exemplarily, the positioning assembly 5 may be connected to the first clamping plate 1 , or may be connected to the base 6 .

[0055] Exemplarily, the positioning assembly 5 can be connected to the first clamping plate 1 or to the base 6 by plugging, snapping, welding, adhesive connection or fastener connection.

[0056] When placing the second clamping plate 2 on the first clamping plate 1, or placing the second clamping plate 2 on the soft-packed battery cell 3 placed on the supporting surface 101, the positioning assembly 5 can be used to position the second clamping plate 2, so that the second clamping plate 2 is located at a preset position above the first clamping plate 1. At the same time, it can also prevent the soft-packed battery cell 3 located on the supporting surface 101 from sliding out of the supporting surface 101 along the second direction, ensuring that the first end 301 of the soft-packed battery cell 3 can be reliably clamped and fixed by the first clamping plate 1 and the second clamping plate 2.

[0057] like Figure 3 In some embodiments, the positioning assembly 5 includes at least two positioning blocks 501 spaced apart from each other along the first direction.

[0058] For example, Figure 1 At least two positioning blocks 501 in the positioning assembly 5 can be arranged near the end of the first clamping plate 1 along the first direction or near the middle of the first clamping plate 1, which is not limited here.

[0059] by Figure 3 Taking the structure and direction shown as an example, two positioning blocks 501 are arranged at intervals on the same side of the first clamping plate 1. When the lower side wall of the second clamping plate 2 abuts against the two positioning blocks 501 on the lower side at the same time, the position of the second clamping plate 2 can be accurately limited in the second direction, and the second clamping plate 2 can also be prevented from horizontally rotating.

[0060] like Figure 2 In some embodiments, a slide rail 102 is disposed at the bottom of the first clamping plate 1 , and the slide rail 102 extends along a first direction. The first clamping plate 1 is slidably connected to the base 6 via the slide rail 102 .

[0061] like Figure 2 By setting the slide rail 102, the friction between the bottom of the first clamping plate 1 and the physical structure can be reduced, so that the first clamping plate 1 can slide along the first direction more easily. After the first clamping plate 1 and the second clamping plate 2 clamp the soft-pack battery cell 3, the first clamping plate 1 is driven to slide along the first direction to conveniently and quickly adjust the relative position between the soft-pack battery cell 3 and the trigger part 401 of the displacement measuring device 4, so that the trigger part 401 of the displacement measuring device 4 abuts against the soft-pack battery cell 3 in the preset area at the bottom of the soft-pack battery cell 3.

[0062] like Figure 2 In some embodiments, along the first direction, the base 6 is provided with at least two support structures 601 disposed at intervals, and the first clamping plate 1 is slidably connected to the support structure 601 via a slide rail 102 disposed at the bottom.

[0063] Exemplarily, the support structure 601 may be a block structure or a plate structure.

[0064] Exemplarily, when the support structure 601 is a plate-like structure, the thickness direction of the support structure 601 is parallel to the first direction, such as Figure 1 .

[0065] By supporting the first clamping plate 1 through the support structures 601 arranged at intervals, the first clamping plate 1 located between adjacent support structures 601 can be suspended in the air, which helps to reduce the contact area between the bottom of the first clamping plate 1 and the solid structure, reduce the friction generated by the first clamping plate 1 when sliding, and can more conveniently and labor-savingly adjust the position of the soft-pack battery cell 3 fixed on the first clamping plate 1.

[0066] Figure 4 is a schematic diagram of the sliding fit between the first clamping plate 1 and the supporting structure 601, as shown Figure 4 In some embodiments, a slide groove 602 slidably matched with the slide rail 102 is disposed on the top of the support structure 601, and the slide groove 602 penetrates the support structure 601 along the first direction.

[0067] The slide groove 602 cooperates with the slide rail 102 to improve the stability of the first clamping plate 1 when sliding, and prevent the first clamping plate 1 from sliding in the second direction (such as Figure 4 There is an offset in the Y direction).

[0068] For example, the slide rail 102 may be a dovetail slide rail. When the dovetail slide rail is slidably matched with the matching slide groove 602, it can not only limit the movement of the first clamping plate 1 in the second direction, but also prevent the first clamping plate 1 from moving in the vertical direction (such as Figure 4 The displacement occurs in the Z direction.

[0069] like Figure 1 In some embodiments, the positioning assembly 5 is fixedly connected to the supporting structure 601 .

[0070] Illustratively, the positioning block 501 in the positioning assembly 5 is provided with a through hole along the second direction, and fasteners such as bolts can pass through the through hole to connect with the support structure 601 , thereby achieving a fixed connection between the positioning assembly 5 and the support structure 601 .

[0071] For example, along the second direction, the outer contour dimensions of the support structure 601 , the outer contour dimensions of the first clamping plate 1 , and the outer contour dimensions of the second clamping plate 2 may be the same.

[0072] like Figure 1, the positioning component 5 is fixedly connected to the supporting structure 601. Compared with the solution of connecting the positioning component 5 to the first clamping plate 1, the weight of the first clamping plate 1 can be reduced, which facilitates driving the first clamping plate 1 to slide; compared with the solution of connecting the positioning component 5 to the base 6, the length of the positioning component 5 can be shortened and the preparation cost can be reduced.

[0073] like Figure 2 In some embodiments, the base 6 is rotatably connected to a rotating platform 7, and the support structure 601 is connected to the rotating platform 7. The rotating platform 7 has a first state that drives the soft-pack battery cell 3 between the first clamping plate 1 and the second clamping plate 2 away from the triggering part 401, such as Figure 5 , Figure 5 4 is a top view of the rotating platform 7 in the first state. The rotating platform 7 also has a second state in which the soft-pack battery cell 3 is brought into contact with the trigger unit 401. Figure 2 .

[0074] Exemplarily, the base 6 may be provided with a rotating shaft, and the rotating platform 7 is rotatably connected to the rotating shaft to achieve relative rotation with the base 6 .

[0075] Exemplarily, the rotating platform 7 can be rotated at a controllable angle by manual control, electric control, or pressure (such as hydraulic pressure or pneumatic pressure) control.

[0076] Exemplarily, the cross-sectional shape of the rotating platform 7 perpendicular to the thickness direction may be polygonal, circular, elliptical or irregular, which is not limited here.

[0077] When the soft-packaged battery cell 3 is clamped to the first clamping plate 1 or the soft-packaged battery cell 3 is detached from the first clamping plate 1, the rotating platform 7 can be placed in the first state. Figure 5 At this time, since the soft-pack battery cell 3 is far away from the trigger part 401, the collision between the soft-pack battery cell 3 and the displacement measuring device 4 can be avoided. On the one hand, the soft-pack battery cell 3 can be protected, and on the other hand, the measurement result displayed by the displacement measuring device 4 can be ensured to be accurate and reliable.

[0078] When it is necessary to measure the soft-pack battery cell 3 clamped by the first clamping plate 1 and the second clamping plate 2, the rotating table 7 can be driven to rotate to the second state, so that the soft-pack battery presses the trigger part 401, and then the displacement measuring device 4 displays the measurement result, such as Figure 2 .

[0079] In some embodiments, Figure 2 , along the first direction, the distance between the trigger portion 401 and the first end 301 is a, and the length of the soft-pack battery cell 3 is b; wherein a is greater than or equal to 0.8b.

[0080] If a<0.8b, the triggering part 401 of the displacement measuring device 4 is too close to the first end 301 of the soft-pack battery cell 3, and the bending deformation of the soft-pack battery cell 3 obtained by the displacement measuring device 4 will be very small, and the measurement result has poor reference value for judging the strength of the soft-pack battery cell 3.

[0081] Only when a≥0.8b, that is, when the trigger part 401 of the displacement measuring device 4 is closer to the second end of the soft-pack battery cell 3, the bending deformation of the soft-pack battery cell 3 obtained by the displacement measuring device 4 will more truly reflect the strength of the soft-pack battery cell 3, and the measurement result has a strong reference for judging the strength of the soft-pack battery cell 3.

[0082] In some embodiments, Figure 2 A push-pull handle 103 is provided at one end of the first clamping plate 1 away from the displacement measuring device 4 .

[0083] The operator pushes or pulls the push-pull handle 103 to drive the first clamping plate 1 to slide, which is convenient for operation and can also prevent the operator from causing damage to the soft-pack battery cells 3 on the first clamping plate 1 when pushing the first clamping plate 1 .

[0084] like Figure 1 In some embodiments, a lifting handle 201 is provided on a side of the second splint 2 away from the first splint 1 .

[0085] The operator can conveniently move the second clamping plate 2 by pulling the handle 201 , so as to facilitate the connection and separation operations between the second clamping plate 2 and the first clamping plate 1 .

[0086] It should be noted that the above describes some embodiments of the present application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the above embodiments and still achieve the desired results. In addition, the processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0087] The various embodiments in the present application are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0088] The description of the present application is given for the purpose of illustration and description, and is not intended to be exhaustive or to limit the present application to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present application, and to enable those of ordinary skill in the art to understand the present application and thus design various embodiments with various modifications suitable for specific purposes.

[0089] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present application (including the claims) is limited to these examples. In line with the concept of the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0090] Although the present application has been described in conjunction with specific embodiments thereof, many alternatives, modifications and variations of these embodiments will be apparent to those skilled in the art in light of the foregoing description.

[0091] The embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present application should be included in the scope of protection of the present application.

Claims

1. A soft pack battery cell testing device, characterized in that: include: First splint; A second clamping plate is disposed above the first clamping plate, the first clamping plate and the second clamping plate are detachably connected, and is used to clamp the first end of the soft-pack battery cell between the first clamping plate and the second clamping plate; a displacement measuring device, arranged at intervals from the first clamping plate or the second clamping plate along a first direction, the displacement measuring device comprising a triggering portion, the triggering portion being used to contact the bottom of the soft-pack battery cell near the second end, the triggering portion being flush with the top of the first clamping plate along the thickness direction of the first clamping plate; A base, wherein the first clamping plate and the displacement measuring device are connected to the base.

2. The soft pack battery testing device according to claim 1, characterized in that: The first clamping plate includes a supporting surface in contact with the soft-pack battery core; along the second direction, at least one side of the first clamping plate is provided with a positioning component, the positioning component extends out of the supporting surface along the thickness direction of the first clamping plate, and the side wall of the second clamping plate abuts against the positioning component; The second direction is perpendicular to the first direction.

3. The soft-pack battery testing device according to claim 2, characterized in that: The positioning assembly includes at least two positioning blocks spaced apart from each other along a first direction.

4. The soft-pack battery cell testing device according to claim 1, characterized in that: A slide rail is provided at the bottom of the first clamping plate, and the slide rail extends along a first direction. The first clamping plate is slidably connected to the base via the slide rail.

5. The soft-pack battery cell testing device according to claim 4, characterized in that: Along the first direction, the base is provided with at least two support structures arranged at intervals, and the first clamping plate is slidably connected to the support structure via a slide rail arranged at the bottom.

6. The soft-pack battery cell testing device according to claim 5, characterized in that: A slide groove slidably matched with the slide rail is arranged on the top of the support structure, and the slide groove penetrates the support structure along a first direction.

7. The soft-pack battery cell testing device according to claim 5, characterized in that: A positioning assembly is disposed on at least one side of the first clamping plate, and the positioning assembly is fixedly connected to the supporting structure.

8. The soft-pack battery cell testing device according to claim 5, characterized in that: The base is rotatably connected to a rotating table, and the supporting structure is connected to the rotating table; the rotating table has a first state of driving the soft-pack battery cell between the first clamping plate and the second clamping plate away from the trigger part, and a second state of driving the soft-pack battery cell to contact the trigger part.

9. The soft-pack battery cell testing device according to claim 1, characterized in that: Along the first direction, the distance between the trigger portion and the first end is a, and the length of the soft-pack battery cell is b; wherein a is greater than or equal to 0.8b.

10. The soft-pack battery cell testing device according to claim 1, characterized in that: A push-pull handle is provided at one end of the first clamping plate away from the displacement measuring device.

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