Test fixture and battery production line

Abstract

The utility model discloses a test fixture and a battery production line, the test fixture comprises a first limiting assembly, a second limiting assembly and a third limiting assembly which are oppositely arranged, the two oppositely arranged first limiting assemblies are configured to limit single batteries in a first direction, and the two oppositely arranged third limiting assemblies are configured to limit the single batteries in a second direction; the second limiting assembly is configured to limit the battery monomers in the second direction, and the third limiting assembly is configured to limit the battery monomers in the third direction. According to the scheme provided by the invention, the distance between the two first limiting assemblies is adjusted to conveniently limit the battery monomers with different thicknesses, and the positions of the second limiting assemblies relative to the first limiting assemblies are adjusted to conveniently limit the battery monomers with different heights; by adjusting the position of the third limiting assembly relative to the first limiting assembly, the battery monomers with different lengths can be conveniently limited, so that the test fixture can be suitable for clamping the battery monomers with different sizes.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, in particular to a test fixture and a battery production line. BACKGROUND

[0002] In the production process of the battery cell, after formation is completed, the performance of the battery cell needs to be tested by means of pressurization, etc. At this time, a fixture is needed to fix the battery cell.

[0003] The fixture in the related art has poor compatibility and cannot be applied to battery cells of different sizes. CONTENT OF THE UTILITY MODEL

[0004] In view of the above problems, the present application provides a test fixture and a battery production line, which can solve the problem that the existing fixture has poor compatibility and cannot be applied to battery cells of different sizes when in use.

[0005] To solve the above technical problems, the present application provides a test fixture, comprising:

[0006] Two oppositely arranged first limiting components configured to limit two opposite large faces of the battery monomer in a first direction, and the relative distance between the two first limiting components is adjustable;

[0007] A second limiting component configured to limit the battery monomer in a second direction, the second limiting component is arranged between the first limiting components, and the connection position of the second limiting component relative to the first limiting component is adjustable to adapt to battery monomers of different heights;

[0008] A third limiting component configured to limit the battery monomer in a third direction, the third limiting component is arranged between the two first limiting components, and the connection position of the third limiting component relative to the first limiting component is adjustable to adapt to battery monomers of different lengths along the third direction;

[0009] Wherein, the second direction is the height direction of the battery monomer, and the third direction is perpendicular to the plane formed by the first direction and the second direction.

[0010] In the technical scheme of the present application, the distance between the two first limiting components is adjusted to facilitate the limiting of battery monomers of different thicknesses, the position of the second limiting component relative to the first limiting component is adjusted to facilitate the limiting of battery monomers of different heights, and the position of the third limiting component relative to the first limiting component is adjusted to facilitate the limiting of battery monomers of different lengths, so that the test fixture can be applied to the clamping of battery monomers of different sizes, has strong compatibility, and reduces the design and manufacture of the fixture.

[0011] In some embodiments, the test fixture further comprises a first fastener disposed between the two first limiting assemblies, the first fastener configured to adjust the distance between the two first limiting assemblies in the first direction. In this way, the distance between the two first limiting assemblies in the first direction can be conveniently adjusted by the first fastener.

[0012] In some embodiments, the second limiting assembly comprises a first limiting plate configured to limit the bottom surface of the battery cell in the second direction.

[0013] The first limiting assembly is connected to the first limiting plate on the side of the first limiting plate facing the first limiting assembly, and the position of the first limiting assembly relative to the first limiting plate in the first direction is adjustable.

[0014] In some embodiments, the test fixture further comprises a second fastener, and the first limiting plate is provided with a first long slot extending in the first direction.

[0015] The second fastener is connected to the first limiting assembly through the first long slot.

[0016] In this way, by adjusting the position of the second fastener in the first long slot and then connecting it to the first limiting assembly, the position of the first limiting assembly relative to the first limiting plate in the first direction can be adjusted.

[0017] In some embodiments, the second limiting assembly further comprises at least one second limiting plate configured to limit the top surface of the battery cell in the second direction.

[0018] The second limiting plate is connected to the side of the first limiting assembly facing the battery cell, and the position of the second limiting plate relative to the first limiting assembly in the second direction is adjustable. In this way, by adjusting the position of the second limiting plate relative to the first limiting assembly in the second direction, the top surface of the battery cell in the second direction can be limited.

[0019] In some embodiments, the test fixture further comprises a third fastener, and the first limiting assembly is provided with a plurality of mounting holes in the second direction, the third fastener being connected to the second limiting plate through the mounting holes.

[0020] In this way, the second limiting plate can be conveniently connected to the first limiting assembly by the third fastener. When the third fastener passes through different positions of the mounting holes, the position of the second limiting plate on the first limiting assembly can be adjusted simultaneously.

[0021] In some embodiments, the second limiting plate is provided with a second long slot at an end thereof along the third direction, the second long slot extending along the second direction;

[0022] The third fastener is connected with the second limiting plate after passing through the mounting hole and the second long slot.

[0023] In this way, the position of the second limiting plate along the second direction can be finely adjusted by adjusting the position of the second long slot relative to the third fastener, so that the second limiting plate abuts against the top surface of the battery cell and limits the top surface.

[0024] In some embodiments, the third limiting assembly comprises a first plate body and a second plate body connected with each other, the first plate body being configured to limit the side surface of the battery cell along the third direction;

[0025] The second plate body is connected to a side of the first limiting assembly facing the battery cell, and the position of the second plate body along the third direction relative to the first limiting assembly is adjustable.

[0026] In this way, the side surface of the battery cell along the third direction can be limited by the first plate body by adjusting the position of the second plate body along the third direction relative to the first limiting assembly.

[0027] In some embodiments, the test fixture further comprises a fourth fastener, and the first limiting assembly is provided with a plurality of mounting holes along the third direction, the fourth fastener being connected with the second plate body after passing through the mounting holes.

[0028] In this way, the second plate body can be conveniently connected to the first limiting assembly by the fourth fastener. When the fourth fastener passes through different mounting holes, the position of the second plate body on the first limiting assembly can be adjusted synchronously.

[0029] In some embodiments, the second plate body is provided with a third long slot extending along the third direction;

[0030] The fourth fastener is connected with the second plate body after passing through the mounting hole and the third long slot.

[0031] In this way, the position of the second plate body along the third direction can be finely adjusted by adjusting the position of the third long slot relative to the fourth fastener, so that the first plate body connected to the second plate body abuts against the side surface of the battery cell and limits the side surface.

[0032] In some embodiments, the first limiting component is provided with an observation hole configured to observe the position of the battery cell located between two first limiting components. In this way, the position of the positioned battery cell is conveniently observed.

[0033] The application also provides a battery production line comprising the test fixture as described in any one of the embodiments of the application.

[0034] The above description is only a summary of the technical solutions of the application. In order to enable one of ordinary skill in the art to better understand the technical means of the application and implement it according to the content of the description, and in order to enable the above and other purposes, characteristics and advantages of the application to be more apparent and easy to understand, the following detailed description of the specific embodiments of the application is provided. BRIEF DESCRIPTION OF DRAWINGS

[0035] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the embodiments. The accompanying drawings are included only to illustrate the embodiments and are not to be considered as limiting of the application. Moreover, in the drawings, like reference numerals designate like parts throughout the various figures. In the drawings:

[0036] Figure 1 A structural schematic diagram of the test fixture provided for some embodiments of the application;

[0037] Figure 2 Another structural schematic diagram of the test fixture provided for some embodiments of the application;

[0038] Figure 3 A top view of Figure 2 ; a front view of

[0039] Figure 4 A front view of Figure 2 ; a front view of

[0040] Figure 5 A schematic diagram of the battery cell provided for some embodiments of the application.

[0041] Reference numerals in the detailed description of the embodiments are as follows:

[0042] 10, battery cell; 101, shell; 102, end cover; 103, electrode assembly; 11, first limiting component; 111, mounting hole; 112, observation hole; 12, second limiting component; 121, first limiting plate; 1211, first long slot; 122, second limiting plate; 1221, second long slot; 13, third limiting component; 131, first plate body; 132, second plate body; 1321, third long slot; 14, first fastener; 15, second fastener; 16, third fastener; 17, fourth fastener. DETAILED DESCRIPTION

[0043] The embodiments of the technical solutions of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion.

[0045] 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 "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0046] In this paper, the reference to "embodiments" means that the specific features, structures or properties described in conjunction with the embodiments can be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily mean the same embodiment, nor is it an independent or alternative embodiment to other embodiments. The skilled person in the art explicitly and implicitly understands that the embodiments described herein can be combined with other embodiments.

[0047] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship between the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are a "or" relationship.

[0048] In the description of the embodiments of the present application, the term "a plurality of" refers to two or more (including two), and similarly, "a plurality of groups" refers to two or more groups (including two groups), and "a plurality of pieces" refers to two or more pieces (including two pieces).

[0049] In the description of the embodiments of the present application, the orientations or positional relationships indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0050] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled 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.

[0051] During the production process of the battery cell, after formation is completed, the performance of the battery cell needs to be tested by means of pressurization and the like, at which time the fixture is needed to fix the battery cell.

[0052] In the related art, when the fixture is used, because the appearance sizes of different battery cell products are different, when different battery cells are fixed, special fixture design needs to be made according to the size of the battery cell, and different sizes of battery cells cannot be compatible.

[0053] Based on the above considerations, in order to solve the problem that the existing fixture has poor compatibility and cannot be applied to battery cells of different sizes when used, the present application proposes a test fixture, which comprises two oppositely arranged first limiting components, a second limiting component and a third limiting component, wherein the two oppositely arranged first limiting components are configured to limit two opposite large faces of the battery monomer in a first direction, and the relative distance between the two first limiting components is adjustable; the second limiting component is configured to limit the battery monomer in a second direction, the second limiting component is arranged on the first limiting component, and the connection position of the second limiting component and the first limiting component is adjustable to adapt to battery monomers of different heights; the third limiting component is configured to limit the battery monomer in a third direction, the third limiting component is arranged between the two first limiting components, and the connection position of the third limiting component and the first limiting component is adjustable to adapt to battery monomers of different sizes along the third direction, the second direction is the height direction of the battery monomer, and the third direction is perpendicular to the plane formed by the first direction and the second direction.

[0054] The technical scheme of the embodiment of the present application is characterized in that the distance between the two first limiting assemblies is adjusted to facilitate the limiting of battery monomers of different thicknesses, the position of the second limiting assembly relative to the first limiting assembly is adjusted to facilitate the limiting of battery monomers of different heights, and the position of the third limiting assembly relative to the first limiting assembly is adjusted to facilitate the limiting of battery monomers of different lengths, so that the test fixture can be applied to the clamping of battery monomers of different sizes, has strong compatibility, and reduces the design and manufacturing of the fixture.

[0055] According to some embodiments of the present application, Figure 1 The structure of the test fixture in the present application is shown in FIG. 1. Figure 1 As shown in FIG. 1, the present application provides a test fixture, which includes two oppositely arranged first limiting assemblies 11, a second limiting assembly 12, and a third limiting assembly 13. The two oppositely arranged first limiting assemblies 11 are configured to limit two opposite large faces of a battery monomer 10 in a first direction, and the relative distance between the two first limiting assemblies 11 is adjustable. The second limiting assembly 12 is configured to limit the battery monomer in a second direction, and is arranged on the first limiting assembly 11. The connection position of the second limiting assembly 12 relative to the first limiting assembly 11 is adjustable to adapt to battery monomers of different heights. The third limiting assembly 13 is configured to limit the battery monomer in a third direction, and is arranged between the two first limiting assemblies 11. The connection position of the third limiting assembly 13 relative to the first limiting assembly 11 is adjustable to adapt to battery monomers of different sizes along the third direction. The second direction is the height direction of the battery monomer, and the third direction is perpendicular to the plane formed by the first direction and the second direction.

[0056] In the present embodiment, the first direction is the X-axis direction as shown in FIG. 2, the second direction is the Y-axis direction, and the third direction is the Z-axis direction. Figure 1

[0057] The battery monomer 10 in the present embodiment can be a secondary battery or a primary battery, and can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery monomer 10 can be in the shape of a cylinder, a flat body, a cuboid, or other shapes.

[0058] Referring to FIG. 3, Figure 5 As shown in FIG. 3, the battery monomer 10 in the present embodiment can include a shell, an electrode assembly 103, and an electrode terminal. The shell includes a shell body 101 and an end cover 102. The shell body 101 has an opening, and the end cover 102 closes the opening to isolate the internal environment of the battery monomer 10 from the external environment.

[0059] ​The shell 101 is a component for fitting the end cover 102 to form an internal environment of the battery cell 10, wherein the formed internal environment can be used to accommodate the electrode assembly 103, electrolyte and other components. The shell 101 and the end cover 102 can be independent components. The shell 101 can be of various shapes and sizes. Specifically, the shape of the shell 101 can be determined according to the specific shape and size of the electrode assembly 103. The material of the shell 101 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.

[0060] The end cover 102 refers to a component that covers the opening of the shell 101 to isolate the internal environment of the battery cell 10 from the external environment. Without limitation, the shape of the end cover 102 can be adapted to the shape of the shell 101 to fit the shell 101. Alternatively, the end cover 102 can be made of a material with certain hardness and strength, such as aluminum alloy, so that the end cover 102 is not easily deformed when subjected to extrusion collision, so that the battery cell 10 can have higher structural strength, and the reliability can also be improved. The end cover 102 can be provided with functional components such as electrode terminals. The electrode terminals can be used to electrically connect with the electrode assembly 103 for outputting or inputting the electrical energy of the battery cell 10. The material of the end cover 102 can also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., which are not specially limited in the embodiments. In some embodiments, an insulating structure can also be provided on the inner side of the end cover 102, which can be used to isolate the electrical connection components in the shell 101 from the end cover 102 to reduce the risk of short circuit. Exemplarily, the insulating structure can be plastic, rubber, etc.

[0061] The electrode assembly 103 is a component in which electrochemical reactions occur in the battery cell 10. One or more electrode assemblies 103 can be contained in the shell 101. The electrode assembly 103 is mainly formed by winding or stacking the positive electrode sheet and the negative electrode sheet, and generally has a separator film between the positive electrode sheet and the negative electrode sheet, which is used to separate the positive electrode sheet and the negative electrode sheet to avoid internal short circuit of the positive electrode sheet and the negative electrode sheet. The positive electrode sheet and the negative electrode sheet have a portion of active material constituting the main body of the electrode assembly 103, and a portion without active material constituting the tab of the positive electrode sheet and the negative electrode sheet, respectively. The positive electrode tab and the negative electrode tab can be located at one end of the main body or at two ends of the main body, respectively. During the charging and discharging process of the battery 100, the positive active material and the negative active material react with the electrolyte, and the tabs are connected to the electrode terminals to form a current loop. In addition, the electrode assembly 103 can be a winding structure or a stacking structure.

[0062] In the embodiments, the large face of the battery cell 10 refers to the two side faces along the X-axis direction.

[0063] The first limiting assembly 11, the second limiting assembly 12 and the third limiting assembly 13 in the embodiment can all be limiting plates, and the limiting plates can be connected through bolts. The two first limiting assemblies 11 are arranged opposite along the X-axis direction, and the distance between the two first limiting assemblies 11 can be adjusted. The second limiting assembly 12 is connected between the two first limiting assemblies 11, and the position of the second limiting assembly 12 relative to the first limiting assembly 11 along the Y-axis direction is adjustable. The third limiting assembly 13 is also connected between the two first limiting assemblies 11, and the position of the third limiting assembly 13 relative to the first limiting assembly 11 along the Z-axis direction is adjustable.

[0064] In use, the distance between the two first limiting assemblies 11 is adjusted to facilitate limiting the battery monomer 10 of different thicknesses, the position of the second limiting assembly 12 relative to the first limiting assembly 11 is adjusted to facilitate limiting the battery monomer 10 of different heights, and the position of the third limiting assembly 13 relative to the first limiting assembly 11 is adjusted to facilitate limiting the battery monomer 10 of different lengths, so that the test fixture can be applied to clamping battery monomers 10 of different sizes, has strong compatibility, and reduces the design and manufacturing of the fixture.

[0065] According to some embodiments of the present application, as shown in Figure 1 or Figure 2 or Figure 3 The test fixture further includes a first fastener 14, and the first fastener 14 is arranged between the two first limiting assemblies 11. The first fastener 14 is configured to adjust the distance between the two first limiting assemblies 11 in the first direction.

[0066] The first limiting assembly 11 in the embodiment can be a limiting plate, and the first fastener 14 can be a sleeve rod. The sleeve rod is connected with a double-headed screw rod at both ends in the axial direction. The double-headed screw rod is matched with the sleeve rod through external threads and internal threads, and the length of the sleeve rod as a whole can be adjusted by rotating the double-headed screw rod.

[0067] In use, one of the double-headed screw rods is connected with one of the limiting plates, and the other double-headed screw rod is connected with the other limiting plate. The distance between the two limiting plates can be adjusted by adjusting the distance between the double-headed screw rod and the sleeve rod.

[0068] Of course, it can be understood that the first fastener 14 can also be an electric telescopic rod, an air rod, etc., which is not limited here.

[0069] In this way, the distance between the two first limiting assemblies 11 in the X-axis direction can be conveniently adjusted through the first fastener 14.

[0070] According to some embodiments of the present application, as shown in Figure 1 and in combination with Figure 2、 Figure 3 As shown in the figure, the second limiting assembly 12 comprises a first limiting plate 121 configured to limit the bottom surface of the battery monomer 10 in the second direction; wherein the side of the first limiting assembly 11 facing the first limiting plate 121 is connected with the first limiting plate 121, and the position of the first limiting assembly 11 relative to the first limiting plate 121 along the first direction is adjustable.

[0071] The first limiting assembly 11 in the embodiment can be a limiting plate, as shown in the figure. Figure 1 As shown in the figure, the bottom surfaces of the two first limiting assemblies 11 along the Y-axis direction are connected with the first limiting plate 121 through bolts. A plurality of screw holes can be arranged on the first limiting plate 121 along the X-axis direction, and the first limiting assemblies 11 are connected with the first limiting plate 121 through the bolts passing through different screw holes, so that the position of the first limiting assembly 11 relative to the first limiting plate 121 along the X-axis direction can be adjusted.

[0072] After the battery monomer 10 is placed on the first limiting plate 121, the bottom surface of the battery monomer 10 is limited by the first limiting plate 121, and then the distance between the two first limiting assemblies 11 is adjusted so that the two first limiting assemblies 11 are in close contact with the two side surfaces of the battery monomer 10 along the X-axis direction. At this time, the first fastener 14 between the two first limiting assemblies 11 is fixed, and then the first limiting assemblies 11 are connected with the first limiting plate 121 through the bolts passing through the screw holes on the first limiting plate 121, so that the bottom surface and the side surface along the X-axis direction of the battery monomer 10 can be limited.

[0073] According to some embodiments of the present application, as shown in the figure, Figure 1 As shown in the figure, the test fixture further comprises a second fastener 15, and the first limiting plate 121 is provided with a first long slot hole 1211 extending along the first direction; the second fastener 15 is connected with the first limiting assembly 11 through the first long slot hole 1211.

[0074] The second fastener 15 in the embodiment can be a bolt, which is not limited here.

[0075] As shown in the figure, Figure 1 As shown in the figure, the first long slot hole 1211 on the first limiting plate 121 extends along the X-axis direction. After the position of the first limiting assembly 11 relative to the first limiting plate 121 along the X-axis direction is adjusted, the position of the second fastener 15 in the first long slot hole 1211 is adjusted, and finally the first limiting assembly 11 is connected with the first limiting plate 121 through the second fastener 15 passing through the first long slot hole 1211, so that the position of the first limiting assembly 11 relative to the first limiting plate 121 along the X-axis direction can be adjusted.

[0076] According to some embodiments of the present application, as shown in the figure, Figure 1 and in combination with Figure 2 、 Figure 3As shown, the second limiting assembly 12 further comprises at least one second limiting plate 122 configured to limit the top surface of the battery cell 10 in the second direction; the second limiting plate 122 is connected to one side of the first limiting assembly 11 facing the battery cell 10, and the position of the second limiting plate 122 relative to the first limiting assembly 11 in the second direction is adjustable.

[0077] The second limiting assembly 12 in the embodiment can include one second limiting plate 122, two second limiting plates 122, etc., which are not limited herein. For the convenience of description below, two second limiting plates 122 are taken as an example for description.

[0078] Reference is made to Figure 1 As shown, the second limiting plate 122 in the embodiment is connected to one side of the first limiting assembly 11 facing the battery cell 10 by a bolt. The first limiting assembly 11 in the embodiment can be a limiting plate, and a plurality of screw holes are arranged on the limiting plate in the Y-axis direction. By connecting the corresponding second limiting plate 122 through the bolt passing through different screw holes, the position of the second limiting plate 122 relative to the first limiting assembly 11 in the Y-axis direction can be adjusted, and thus the top surface of the battery cell 10 in the Y-axis direction can be limited.

[0079] After the battery cell 10 is placed on the first limiting plate 121, the bottom surface of the battery cell 10 is limited by the first limiting plate 121, and then the distance between the two first limiting assemblies 11 is adjusted so that the two first limiting assemblies 11 are in close contact with the two sides of the battery cell 10 in the X-axis direction. At this time, the first fastener 14 between the two first limiting assemblies 11 is fixed, and then the bolt is connected with the first limiting assembly 11 by passing through the screw hole on the first limiting plate 121, so that the bottom surface and the side surface of the battery cell 10 in the X-axis direction can be limited. At the same time, the position of the second limiting plate 122 relative to the first limiting assembly 11 in the Y-axis direction is adjusted, so that the top surface of the battery cell 10 in the Y-axis direction can be limited.

[0080] According to some embodiments of the present application, as Figure 1 As shown, the test fixture further comprises a third fastener 16, and a plurality of mounting holes 111 are arranged on the first limiting assembly 11 in the second direction, and the third fastener 16 is connected with the second limiting plate 122 by passing through the mounting hole 111.

[0081] The third fastener 16 in the embodiment can be a bolt, which is not limited herein.

[0082] Reference is made to Figure 1As shown, the first limiting assembly 11 is provided with a plurality of mounting holes 111 along the Y-axis direction, and the second limiting plate 122 is fixed on the first limiting assembly 11 by connecting the third fastener 16 with the mounting hole 111 and the second limiting plate 122.

[0083] According to some embodiments of the present application, as shown in Figure 1 As shown, the second limiting plate 122 is provided with a second long hole 1221 at the end along the third direction, and the second long hole 1221 extends along the second direction; wherein the third fastener 16 is connected with the second limiting plate 122 by passing through the mounting hole 111 and the second long hole 1221.

[0084] The second direction and the third direction in the embodiment can refer to the description above, which will not be repeated here.

[0085] The second long hole 1221 of the second limiting plate 122 in the embodiment extends along the Y-axis direction.

[0086] When connected, the second limiting plate 122 is fixed on the first limiting assembly 11 by passing the third fastener 16 through the mounting hole 111 and the second long hole 1221. At the same time, the position of the second limiting plate 122 along the Y-axis direction can be fine-tuned by adjusting the position of the second long hole 1221 relative to the third fastener 16, that is, moving the second limiting plate 122 up and down along the Y-axis direction after the third fastener 16 is inserted into the second long hole 1221, so that the second limiting plate 122 can abut against the top surface of the battery monomer 10 to limit the top surface.

[0087] According to some embodiments of the present application, as shown in Figure 1 As shown, the third limiting assembly 13 includes a first plate body 131 and a second plate body 132 connected with each other, and the first plate body 131 is configured to limit the side surface of the battery monomer along the third direction; wherein the second plate body 132 is connected to the side of the first limiting assembly 11 facing the battery monomer, and the position of the second plate body 132 along the third direction relative to the first limiting assembly 11 is adjustable.

[0088] The third limiting assembly 13 is provided on both sides of the battery monomer 10 along the Z-axis in the embodiment. As shown in Figure 1 As shown, the first plate body 131 and the second plate body 132 are integrally formed in an L-shaped structure, and the second plate body 132 is connected to the side of the first limiting assembly 11 facing the battery monomer by a bolt.

[0089] The first limiting component 11 is provided with a plurality of screw holes in the Z-axis direction. The second plate body 132 is connected with the first limiting component 11 through bolts passing through the screw holes at different positions, so as to adjust the position of the third limiting component 13 relative to the first limiting component 11 in the Z-axis direction.

[0090] In use, the first plate body 131 and the battery monomer 10 are tightly attached along the Z-axis direction through the bolts passing through the screw holes at different positions on the first limiting component 11 and being connected with the second plate body 132, so as to limit the side of the battery monomer 10 in the Z-axis direction.

[0091] According to some embodiments of the present application, as shown in Figure 1 The first limiting component 11 is provided with a plurality of mounting holes 111 in the third direction. The fourth fastener 17 is connected with the second plate body 132 through the mounting holes 111.

[0092] The fourth fastener 17 in the embodiment can be a bolt, which is not limited herein.

[0093] Referring to Figure 1 The first limiting component 11 is provided with a plurality of mounting holes 111 in the Z-axis direction. The second plate body 132 is fixed on the first limiting component 11 through the fourth fastener 17 passing through the corresponding mounting holes 111. Meanwhile, the position of the second plate body 132 in the Z-axis direction on the first limiting component 11 can be adjusted synchronously when the fourth fastener 17 passes through the mounting holes 111 at different positions in the Z-axis direction.

[0094] According to some embodiments of the present application, as shown in Figure 1 The second plate body 132 is provided with a third long hole 1321, wherein the third long hole 1321 extends in the third direction. The fourth fastener 17 is connected with the second plate body 132 through the mounting hole 111 and the third long hole 1321.

[0095] The third direction in the embodiment can be referred to the description above, which will not be repeated herein.

[0096] The third long hole 1321 provided on the second plate body 132 in the embodiment extends in the Z-axis direction.

[0097] When connected, the second plate body 132 can be fixed on the first limiting assembly 11 by passing the fourth fastener 17 through the corresponding mounting hole 111 and the third long slot hole 1321. Meanwhile, by adjusting the position of the third long slot hole 1321 relative to the fourth fastener 17, i.e., moving the second plate body 132 left and right along the Z-axis direction after the fourth fastener 17 is inserted into the third long slot hole 1321, the position of the second plate body 132 in the Z-axis direction can be fine-tuned, so that the first plate body 131 connected on the second plate body 132 can abut against the side surface of the battery monomer 10 in the Z-axis direction and limit the side surface.

[0098] According to some embodiments of the present application, as shown in Figure 2 or Figure 4 or ​ As shown, the first limiting assembly 11 is provided with an observation hole 112 configured to observe the position of the battery monomer located between two first limiting assemblies 11.

[0099] The first limiting assembly 11 in the embodiment can be a limiting plate, and the observation hole 112 penetrates the limiting plate along the X-axis direction. When the battery monomer 10 is fixed between two first limiting assemblies 11, the position of the positioned battery monomer 10 can be observed through the observation hole 112.

[0100] The present application also provides a battery production line comprising the test fixture according to any one of the embodiments of the present application.

[0101] The battery production line in the embodiment can be used to produce battery monomers. The specific structure of the test fixture in the embodiment is referred to the above embodiments. Since all the technical solutions of the above embodiments are adopted in the battery production line, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, which will not be repeated here.

[0102] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the above embodiments, or make equivalent replacement for part or all of the technical features; 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 be covered in the scope of the claims and the description of the present application. Especially, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A test fixture, characterized by, The test fixture comprises: two first limiting assemblies arranged oppositely and configured to limit two opposite surfaces of a battery cell in a first direction, and the distance between the two first limiting assemblies is adjustable to adapt to battery cells with different sizes in the first direction; a second limiting assembly configured to limit the battery cell in a second direction, the second limiting assembly is connected to the first limiting assembly, and the connection position of the second limiting assembly with the first limiting assembly is adjustable to adapt to battery cells with different sizes in the second direction; a third limiting assembly configured to limit the battery cell in a third direction, the third limiting assembly is connected between the two first limiting assemblies, and the connection position of the third limiting assembly with the first limiting assembly is adjustable to adapt to battery cells with different sizes in the third direction; wherein the first direction, the second direction and the third direction are perpendicular to each other.

2. The test fixture of claim 1, wherein, The test fixture further comprises a first fastener arranged between the two first limiting assemblies, and the first fastener is configured to adjust the distance between the two first limiting assemblies in the first direction.

3. The test fixture of claim 1, wherein, The second limiting assembly comprises a first limiting plate configured to limit the bottom surface of the battery cell in the second direction; The side of the first limiting assembly facing the first limiting plate is connected to the first limiting plate, and the position of the first limiting assembly relative to the first limiting plate in the first direction is adjustable.

4. The test fixture of claim 3, wherein, The test fixture further comprises a second fastener, and the first limiting plate is provided with a first long slot extending in the first direction; The second fastener is connected to the first limiting assembly through the first long slot.

5. The test fixture of claim 1, wherein, The second limiting assembly further comprises at least one second limiting plate configured to limit the top surface of the battery cell in the second direction; The second limiting plate is connected to the side of the first limiting assembly facing the battery cell, and the position of the second limiting plate relative to the first limiting assembly in the second direction is adjustable.

6. The test fixture of claim 5, wherein, The test fixture further comprises a third fastener, and the first limiting assembly is provided with a plurality of mounting holes in the second direction, and the third fastener is configured to selectively pass through any mounting hole and be connected to the second limiting plate.

7. The test fixture of claim 6, wherein, The end of the second limiting plate in the third direction is provided with a second long slot extending in the second direction; The third fastener is connected to the second limiting plate after passing through the mounting hole and the second long slot.

8. The test fixture of claim 1, wherein, The third limiting assembly comprises a first plate body and a second plate body connected to each other, and the first plate body is configured to limit the surface of the battery cell in the third direction; The second plate body is connected to the side of the first limiting assembly facing the battery cell, and the position of the second plate body relative to the first limiting assembly in the third direction is adjustable.

9. The test fixture of claim 8, wherein, The test fixture further comprises a fourth fastener, the first limiting assembly is provided with a plurality of mounting holes in the third direction, and the fourth fastener is configured to selectively pass through any mounting hole and be connected with the second plate body.

10. The test fixture of claim 9, wherein, The second plate body is provided with a third long slot hole extending in the third direction. The fourth fastener is connected with the second plate body after passing through the mounting hole and the third long slot hole.

11. The test fixture of any one of claims 1 to 10, wherein, The first limiting assembly is provided with an observation hole configured to observe the position of the battery cell between two first limiting assemblies.

12. A battery production line, characterized by The test fixture comprises the test fixture according to any one of claims 1 to 11.

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