Test fixture and battery production line

Abstract

The utility model discloses a test fixture and a battery production line, the test fixture comprises a frame body, two oppositely arranged first limiting assemblies, at least one second limiting assembly and a third limiting assembly, the first limiting assemblies are arranged in the frame body, the second limiting assemblies are arranged in the frame body, and the third limiting assembly is arranged in the frame body. 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, the position of the second limiting assembly relative to the frame body is adjusted to conveniently limit the battery monomers with different heights, and the position of the third limiting assembly relative to the frame body is adjusted to conveniently limit the battery monomers with different heights. According to the test fixture, the limiting device is arranged, so that the battery monomers with different lengths can be conveniently limited, the test fixture can be suitable for clamping the battery monomers with different sizes, the compatibility is high, and the design and manufacturing of the fixture are reduced.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a test fixture and a battery production line. Background Technology

[0002] During the production process of battery cells, after formation is completed, the performance of the battery cells needs to be tested by means of pressurization, and at this time, fixtures are needed to fix the battery cells.

[0003] The clamps in the related technologies have poor compatibility and cannot be used with battery cells of different sizes. Utility Model Content

[0004] In view of the above problems, this application provides a test fixture and a battery production line, which can solve the problem that existing fixtures have poor compatibility and cannot be used with battery cells of different sizes.

[0005] To address the aforementioned technical problems, this application proposes a test fixture, comprising:

[0006] Frame;

[0007] Two opposing first limiting components are disposed within the frame and configured to limit two surfaces of a battery cell in a first direction. At least one first limiting component is movably connected to the frame so that the relative distance between the two first limiting components is adjustable.

[0008] At least one second limiting component is disposed within the frame and configured to limit the battery cell in a second direction. The second limiting component is movably connected to the frame so that its position relative to the frame in the second direction is adjustable.

[0009] A third limiting component is disposed within the frame and configured to limit the battery cell in a third direction. The third limiting component is movably connected to the frame so that its position relative to the frame along the third direction is adjustable.

[0010] Wherein, the first direction, the second direction, and the third direction are perpendicular to each other.

[0011] In the technical solution of this application embodiment, the distance between the two first limiting components is adjusted to facilitate the limiting of battery cells of different thicknesses, the position of the second limiting component relative to the frame is adjusted to facilitate the limiting of battery cells of different heights, and the position of the third limiting component relative to the frame is adjusted to facilitate the limiting of battery cells of different lengths. Thus, the test fixture can be used to clamp battery cells of different sizes, has strong compatibility, and reduces the design and manufacturing of fixtures.

[0012] Meanwhile, by using the frame as the assembly base for each limiting component, it is ensured that each limiting component can be connected according to the preset spatial position, thus laying the structural foundation for the precise positioning of the battery cells. Furthermore, since the limiting components are movably connected to the frame, the frame's own limiting function ensures that the limiting components will not shift during adjustment, maintaining the overall structural stability of the fixture. Moreover, because the limiting components are movably connected to the frame, the external forces experienced by each limiting component during testing can be distributed, preventing the fixture from deforming or being damaged due to excessive localized stress. This also prevents battery cells from loosening or falling off during testing, ensuring safety throughout the testing process.

[0013] In some embodiments, the frame includes a base plate, a connecting frame, and a bracket, wherein the base plate is disposed on one side of the connecting frame along the second direction, and the bracket is disposed on the other side of the connecting frame along the second direction;

[0014] The first limiting component, the second limiting component, and the third limiting component are all movably connected within the connecting frame.

[0015] In some embodiments, the connecting frame includes two first borders and two second borders, the two first borders are arranged opposite to each other along the first direction, the two second borders are arranged opposite to each other along the third direction, and the first borders and the second borders are connected end to end;

[0016] The base plate is disposed on the same side of the first frame and the second frame along the second direction, and the bracket is disposed on the other side of the first frame and the second frame along the second direction.

[0017] In some embodiments, the first limiting component includes a first limiting plate and a first adjusting rod. The first limiting plate is disposed within the connecting frame, and the first adjusting rod is connected to the first frame and configured to drive the first limiting plate to move along the first direction. This allows the first limiting plate to be easily moved along the first direction via the first adjusting rod.

[0018] In some embodiments, the first limiting component further includes a fastener configured to connect the two first limiting plates. In this way, the two first limiting plates can be secured together by the fastener.

[0019] In some embodiments, the second limiting component includes a second limiting plate and a second adjusting rod. The second limiting plate is disposed within the connecting frame, and the second adjusting rod is connected to the bracket. The second adjusting rod is connected to the second limiting plate and configured to drive the second limiting plate to move along the second direction. This allows the second limiting plate to be easily moved along the second direction via the second adjusting rod.

[0020] In some embodiments, the support includes two first crossbars and at least one support bar;

[0021] Two first crossbars are correspondingly positioned on the side of the two first frames away from the base plate. The support rod is positioned between the two first crossbars. The second adjusting rod passes through the support rod and connects to the second limiting plate. In this way, the second adjusting rod can be connected to the bracket by connecting it to the support rod.

[0022] In some embodiments, the first crossbar and the first frame are provided with a gap on the side away from the base plate, the end of the support rod along the first direction is located in the gap, and the support rod is movable along the third direction.

[0023] In this way, by adjusting the position of the support rod along the third direction, the position of the second adjustment rod in the third direction can be adjusted simultaneously, and then the position of the second limiting plate connected to the second adjustment rod in the third direction can be adjusted so that the second limiting plate is located at an appropriate position on the top surface of the battery cell.

[0024] In some embodiments, the bracket further includes a positioning plate connected between the two first crossbars, and the positioning plate abuts against the opposite sides of the two first frame sides on both sides along the first direction. In this way, by the positioning plate abutting against the opposite sides of the two first frame sides on both sides along the first direction, the relative position of the two first frame sides can be defined, preventing the upper parts of the two first frame sides from tilting.

[0025] In some embodiments, the position of the positioning plate relative to the first crossbar along the third direction is adjustable. This facilitates adjustment of the positioning plate's position in the third direction and avoids interference between the positioning plate and the battery cell.

[0026] In some embodiments, the third limiting component includes a third limiting plate and a third adjusting rod. The third limiting plate is disposed within the connecting frame, and the third adjusting rod is connected to the second frame and the third limiting plate, configured to drive the third limiting plate to move along the third direction. This allows the third limiting plate to be easily moved along the third direction via the third adjusting rod.

[0027] In some embodiments, the test fixture further includes an adjusting member disposed on the third limiting plate and configured to move the third limiting plate along the second direction. This allows the third limiting plate to be moved along the second direction via the adjusting member, so that the third adjusting rod is connected to the third limiting plate.

[0028] In some embodiments, a shim is provided on at least one side of the third limiting plate along the first direction, the shim being configured to adjust the size of the third limiting plate along the first direction. This allows the size of the third limiting plate in the first direction to be adjusted by the shim, so that the third limiting plate as a whole can accommodate battery cells of different thicknesses.

[0029] In some embodiments, the gasket comprises at least two layers, which are detachably connected along the first direction. This allows the thickness of the corresponding gasket to be adjusted by adding or removing the corresponding layers, thereby facilitating the adjustment of the dimension of the third limiting plate along the first direction.

[0030] In some embodiments, the test fixture further includes a locking element configured to rotate any one of the first adjusting rod, the second adjusting rod, and the third adjusting rod. This allows for convenient rotation of the corresponding adjusting rod via the locking element.

[0031] In some embodiments, the base plate has a protrusion on the side facing the first frame, and the first frame has a slot on the side facing the base plate, the slot engaging with the protrusion. This facilitates a stable connection of the first frame to the base plate.

[0032] In some embodiments, the test fixture further includes a plurality of rollers disposed on the base plate. This facilitates the movement of the entire fixture.

[0033] This application also provides a battery production line, including a test fixture as described in any one of the embodiments of this application.

[0034] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0035] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the embodiments described below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0036] Figure 1 This is a schematic diagram of the structure of the test fixture provided in some embodiments of this application;

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

[0038] Figure 3 for Figure 2 Side view;

[0039] Figure 4 for Figure 2 Top view;

[0040] Figure 5 for Figure 1 Enlarged diagram of point A in the diagram;

[0041] Figure 6 The diagram shows a single battery cell provided for some embodiments of this application.

[0042] The reference numerals in the detailed embodiments are as follows:

[0043] 10. Battery cell; 101. Housing; 102. End cap; 103. Electrode assembly; 11. Frame; 111. Base plate; 1111. Protrusion; 112. Connecting frame; 1121. First side frame; 11211. Slot; 1122. Second side frame; 11221. Second crossbar; 113. Bracket; 1131. First crossbar; 1132. Support rod; 1133. Positioning plate; 12. First limiting assembly; 121. First limiting plate; 122. First adjusting rod; 123. Fastener; 13. Second limiting assembly; 131. Second limiting plate; 132. Second adjusting rod; 14. Third limiting assembly; 141. Third limiting plate; 1411. Gasket; 142. Third adjusting rod; 15. Adjusting component; 16. Locking component; 17. Roller; 18. Gap. Detailed Implementation

[0044] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0045] 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 this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0046] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0047] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0048] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0049] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0050] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0051] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0052] During the production process of battery cells, after formation is completed, the performance of the battery cells needs to be tested by means of pressurization, and at this time, fixtures are needed to fix the battery cells.

[0053] When using the clamps in the related technologies, because different battery cell products have different external dimensions, it is necessary to design special clamps according to the size of the battery cell to fix different battery cells, which cannot be compatible with battery cells of different sizes.

[0054] Based on the above considerations, in order to solve the problem that existing fixtures have poor compatibility and cannot be applied to battery cells of different sizes, this application proposes a test fixture. The test fixture includes a frame, two opposing first limiting components, at least one second limiting component, and a third limiting component. The first limiting components are disposed within the frame and configured to limit the two surfaces of a battery cell in a first direction. At least one first limiting component is movably connected to the frame so that the relative distance between the two first limiting components is adjustable. The second limiting component is disposed within the frame and configured to limit the battery cell in a second direction. The second limiting component is movably connected to the frame so that its position relative to the frame in the second direction is adjustable. The third limiting component is disposed within the frame and configured to limit the battery cell in a third direction. The third limiting component is movably connected to the frame so that its position relative to the frame in the third direction is adjustable. The first, second, and third directions are mutually perpendicular.

[0055] In the technical solution of this application embodiment, the distance between the two first limiting components is adjusted to facilitate the limiting of battery cells of different thicknesses. The position of the second limiting component relative to the frame is adjusted to facilitate the limiting of battery cells of different heights. The position of the third limiting component relative to the frame is adjusted to facilitate the limiting of battery cells of different lengths. This allows the test fixture to be applicable to clamping battery cells of different sizes, offering strong compatibility and reducing the design and manufacturing of the fixture. Simultaneously, using the frame as the assembly base for each limiting component ensures that each limiting component can be connected according to a preset spatial position, thus laying a structural foundation for precise limiting of the battery cells. Moreover, since each limiting component is movably connected to the frame, the frame's own limiting effect ensures that the limiting components will not shift during adjustment, maintaining the overall structural stability of the fixture. Furthermore, since each limiting component is movably connected to the frame, the external forces experienced by each limiting component during testing can be distributed, preventing the fixture from deforming or being damaged due to excessive localized stress. Simultaneously, it prevents battery cells from loosening or falling off during testing, ensuring the safety of the testing process.

[0056] According to some embodiments of this application, Figure 1 This application provides a test fixture, which includes a frame 11, two opposing first limiting components 12, at least one second limiting component 13, and a third limiting component 14. The first limiting components 12 are disposed within the frame 11 and configured to limit the two surfaces of a battery cell in a first direction. At least one first limiting component 12 is movably connected to the frame 11 so that the relative distance between the two first limiting components 12 is adjustable. The second limiting component 13 is... The first, second, and third directions are arranged within the frame 11 and configured to limit the battery cell in the second direction. The second limiting component 13 is movably connected to the frame 11 so that the position of the second limiting component 13 relative to the frame 11 in the second direction is adjustable. The third limiting component 14 is disposed within the frame 11 and configured to limit the battery cell in the third direction. The third limiting component 14 is movably connected to the frame 11 so that the position of the third limiting component 14 relative to the frame 11 in the third direction is adjustable. The first, second, and third directions are perpendicular to each other.

[0057] The first direction in this embodiment is as follows: Figure 1 The first direction is the X-axis, the second direction is the Y-axis, and the third direction is the Z-axis. The X-axis, Y-axis, and Z-axis are all perpendicular to each other.

[0058] In this embodiment, the battery cell 10 can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited to these. The battery cell 10 can be cylindrical, flat, cuboid, or other shapes.

[0059] refer to Figure 6 As shown, the battery cell 10 in this embodiment may include a housing, an electrode assembly 103, and electrode terminals. The housing includes a casing 101 and an end cap 102. The casing 101 has an opening, and the end cap 102 closes the opening to isolate the internal environment of the battery cell 10 from the external environment.

[0060] The housing 101 is an assembly used to cooperate with the end cap 102 to form the internal environment of the battery cell 10, wherein the formed internal environment can accommodate the electrode assembly 103, electrolyte, and other components. The housing 101 and the end cap 102 can be independent components. The housing 101 can have various shapes and sizes. Specifically, the shape of the housing 101 can be determined according to the specific shape and size of the electrode assembly 103. The housing 101 can be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, and plastic.

[0061] End cap 102 refers to a component that covers the opening of housing 101 to isolate the internal environment of battery cell 10 from the external environment. The shape of end cap 102 can be adapted to the shape of housing 101 to fit it. Optionally, end cap 102 can be made of a material with certain hardness and strength, such as aluminum alloy. This makes end cap 102 less prone to deformation under pressure and impact, allowing battery cell 10 to have higher structural strength and improved reliability. Functional components such as electrode terminals can be provided on end cap 102. Electrode terminals can be used for electrical connection with electrode assembly 103 to output or input electrical energy to battery cell 10. The material of end cap 102 can also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and this application embodiment does not impose any special limitations on this. In some embodiments, an insulating structure can also be provided on the inner side of end cap 102. The insulating structure can be used to isolate the electrical connection components inside housing 101 from end cap 102 to reduce the risk of short circuit. For example, the insulating structure can be made of plastic, rubber, etc.

[0062] Electrode assembly 103 is the component in the battery cell 10 where electrochemical reactions occur. The housing 101 may contain one or more electrode assemblies 103. Electrode assembly 103 is mainly formed by winding or stacking positive and negative electrode sheets, and typically a separator is provided between the positive and negative electrode sheets to separate them and prevent internal short circuits. The portions of the positive and negative electrode sheets containing active material constitute the main body of electrode assembly 103, while the portions without active material each constitute electrode tabs. The positive and negative electrode tabs may be located together at one end of the main body or separately at both ends. During the charging and discharging process of the battery 100, the positive and negative active materials react with the electrolyte, and the electrode tabs connect to the electrode terminals to form a current loop. Furthermore, electrode assembly 103 can be a wound structure or a stacked structure.

[0063] In this embodiment, the two surfaces of the battery cell 10 in the first direction refer to the two side surfaces along the X-axis direction.

[0064] In this embodiment, the frame 11 can be a closed structure on all sides. The bottom of the frame 11 is provided with a base plate, and the top of the frame 11 is provided with a bracket connected to the second limiting component 13, etc. The specific details can be determined according to the actual situation, and this embodiment does not limit it.

[0065] This embodiment may include two first limiting components 12, one second limiting component 13, and two third limiting components 14. The two first limiting components 12 are arranged opposite each other along the X-axis, the two third limiting components 14 are arranged opposite each other along the Z-axis, and the second limiting component 13 is located on the top surface of the battery cell 10 along the Y-axis.

[0066] In this embodiment, the structures of the first limiting component 12, the second limiting component 13, and the third limiting component 14 can all include a screw and a limiting plate. The screw is rotatably connected to the corresponding frame 11 and is also connected to the corresponding limiting plate. Rotating the corresponding screw can drive the corresponding limiting plate to move.

[0067] In use, the distance between the two first limiting components 12 can be adjusted to limit battery cells 10 of different thicknesses. The position of the second limiting component 13 relative to the frame 11 can be adjusted to limit battery cells 10 of different heights. The position of the third limiting component 14 relative to the frame 11 can be adjusted to limit battery cells 10 of different lengths. This makes the test fixture suitable for clamping battery cells 10 of different sizes, with strong compatibility and reduced fixture design and manufacturing.

[0068] Meanwhile, by using the frame 11 as the assembly base for each limiting component, it can be ensured that each limiting component can be connected according to the preset spatial position, thus laying the structural foundation for the precise positioning of the battery cell 10. Moreover, since the limiting components are movably connected to the frame 11, the limiting components can be prevented from shifting during adjustment through the limiting effect of the frame 11 itself, maintaining the overall structural stability of the fixture. Furthermore, since the limiting components are movably connected to the frame 11, the external forces on each limiting component during testing can be distributed, preventing the fixture from deforming or being damaged due to excessive local stress, and also preventing the battery cell 10 from loosening or falling off during testing, ensuring the safety of the testing process.

[0069] According to some embodiments of this application, such as Figure 1 As shown, the frame 11 includes a base plate 111, a connecting frame 112, and a bracket 113. The base plate 111 is disposed on one side of the connecting frame 112 along the second direction, and the bracket 113 is disposed on the other side of the connecting frame 112 along the second direction. The first limiting component 12, the second limiting component 13, and the third limiting component 14 are all movably connected within the connecting frame 112.

[0070] The second direction in this embodiment can be referred to the description above, and will not be repeated here.

[0071] In this embodiment, the connecting frame 112 has open structures on both sides along the Y-axis. The base plate 111 can be bolted to the bottom surface of the connecting frame 112, and the bracket 113 can be bolted to the top surface of the connecting frame 112.

[0072] In use, when the battery cell 10 is placed inside the connecting frame 112, the bottom surface of the battery cell 10 contacts the base plate 111. The base plate 111 limits the bottom surface of the battery cell 10. Then, the first limiting component 12 limits the front and rear sides of the battery cell 10 along the X-axis, the second limiting component 13 limits the top surface of the battery cell 10 along the Y-axis, and the third limiting component 14 limits the left and right sides of the battery cell 10 along the Z-axis. Thus, the battery cell 10 can be stably fixed in the connecting frame 112.

[0073] By adjusting the distance between the two first limiting components 12, adjusting the position of the second limiting component 13 relative to the connecting frame 112, and adjusting the position of the third limiting component 14 relative to the connecting frame 112, the test fixture can be adapted to hold battery cells 10 of different sizes.

[0074] According to some embodiments of this application, such as Figure 1 and combined Figure 2As shown, the connecting frame 112 includes two first frame 1121 and two second frame 1122, wherein the two first frame 1121 are arranged opposite each other along a first direction, and the two second frame 1122 are arranged opposite each other along a third direction, and the first frame 1121 and the second frame 1122 are connected end to end; the base plate 111 is disposed on the same side of the first frame 1121 and the second frame 1122 along a second direction, and the bracket 113 is disposed on the other side of the first frame 1121 and the second frame 1122 along the second direction.

[0075] In this embodiment, the first frame 1121 and the second frame 1122 can be connected together by bolts or snap-fit ​​structures, which is not limited here.

[0076] In this embodiment, the first frame 1121 and the second frame 1122 are connected end to end to form a square frame. The base plate 111 is connected to the bottom of the first frame 1121 and the second frame 1122 by bolts or snap-fit. The bracket 113 is connected to the top of the first frame 1121 and the second frame 1122 by bolts or snap-fit. Of course, it is understood that the base plate 111, the first frame 1121, the second frame 1122, and the bracket 113 can also be connected together by other structures, which is not limited here.

[0077] In this embodiment, a connecting frame 112 is formed by connecting the first frame 1121 and the second frame 1122. When the connecting frame 112 is damaged, it is only necessary to replace the corresponding first frame 1121 or second frame 1122.

[0078] Meanwhile, after the entire fixture is used up, the connecting frame 112 can be disassembled into the first frame 1121 and the second frame 1122 and stored to avoid occupying a large storage space.

[0079] According to some embodiments of this application, such as Figure 1 As shown, the first limiting component 12 includes a first limiting plate 121 and a first adjusting rod 122. The first limiting plate 121 is disposed in the connecting frame 112, and the first adjusting rod 122 is connected to the first frame 1121. The first adjusting rod 122 is connected to the first limiting plate 121 and is configured to drive the first limiting plate 121 to move along a first direction.

[0080] This embodiment may include one or two first adjusting rods 122, and the specific ones can be determined according to the actual situation. This specification does not limit this embodiment.

[0081] In this embodiment, the first adjusting rod 122 can be an adjusting screw, a hydraulic rod, etc., and is not limited here.

[0082] In this embodiment, the first adjusting rod 122 is provided with a threaded section, and the first frame 1121 is provided with an internal thread. The internal thread cooperates with the threaded section. After the threaded section on the first adjusting rod 122 extends into the internal thread, it connects with the first limiting plate 121.

[0083] In use, by rotating the first adjusting rod 122, the first adjusting rod 122 extends or pushes out relative to the connecting frame 112 along the X-axis direction, thereby driving the corresponding first limiting plate 121 to move along the X-axis direction.

[0084] After the battery cell 10 is placed in the connecting frame 112, the bottom surface of the battery cell 10 contacts the bottom plate 111. At this time, by rotating the first adjusting rod 122, the first adjusting rod 122 drives the first limiting plate 121 to move in the X-axis direction within the connecting frame 112, so that the first limiting plate 121 is in close contact with the side of the battery cell 10 in the X-axis direction, thereby limiting the side of the battery cell 10 in the X-axis direction.

[0085] According to some embodiments of this application, such as Figure 1 As shown, the first limiting component 12 also includes a fastener 123 configured to connect the two first limiting plates 121.

[0086] In this embodiment, the fastener 123 can be a bolt, and there is no limitation here.

[0087] In use, after the positions of the two first limiting plates 121 along the X-axis are adjusted, that is, after each first limiting plate 121 is in close contact with the side of the corresponding battery cell 10 along the X-axis, the two first limiting plates 121 are connected together by fasteners 123 to prevent the two first limiting plates 121 from shaking.

[0088] According to some embodiments of this application, such as Figure 1 and combined Figure 3 As shown, the second limiting component 13 includes a second limiting plate 131 and a second adjusting rod 132. The second limiting plate 131 is disposed in the connecting frame 112, and the second adjusting rod 132 is connected to the bracket 113. The second adjusting rod 132 is connected to the second limiting plate 131 and is configured to drive the second limiting plate 131 to move along the second direction.

[0089] In this embodiment, the second adjusting rod 132 can be an adjusting screw, a hydraulic rod, etc., and is not limited here.

[0090] In this embodiment, the second adjusting rod 132 is provided with a threaded section, and the bracket 113 is provided with an internal thread. The internal thread cooperates with the threaded section. After the threaded section on the second adjusting rod 132 extends into the internal thread, it connects with the second limiting plate 131.

[0091] In use, by rotating the second adjusting rod 132, the second adjusting rod 132 extends or pushes out relative to the bracket 113 along the Y-axis direction, thereby driving the corresponding second limiting plate 131 to move along the Y-axis direction.

[0092] After the battery cell 10 is placed in the connecting frame 112, the first adjusting rod 122 drives the first limiting plate 121 to move along the X-axis direction in the connecting frame 112 and then it is in close contact with the side of the battery cell 10. Then, the second adjusting rod 132 drives the second limiting plate 131 to move along the Y-axis direction in the connecting frame 112 and then it is in close contact with the top surface of the battery cell 10. In this way, the front, rear, and top sides of the battery cell 10 can be limited.

[0093] According to some embodiments of this application, such as Figure 1 and combined Figure 4 As shown, the bracket 113 includes two first crossbars 1131 and at least one support rod 1132. The two first crossbars 1131 are respectively disposed on the side of the two first frames 1121 away from the bottom plate 111. The support rod 1132 is disposed between the two first crossbars 1131. The second adjusting rod 132 passes through the support rod 1132 and is connected to the second limiting plate 131.

[0094] In this embodiment, the first crossbar 1131 can be bolted to the side of the first frame 1121 away from the base plate 111, and the support rod 1132 can also be bolted between the two first crossbars 1131. Of course, it is understood that the first crossbar 1131, the first frame 1121 and the support rod 1132 can also be connected by other structures, which are not limited here.

[0095] In this embodiment, the second adjusting rod 132 is provided with a threaded section, and the support rod 1132 is provided with an internal thread. The internal thread cooperates with the threaded section. After the threaded section on the second adjusting rod 132 extends into the internal thread, it connects with the second limiting plate 131.

[0096] In use, by rotating the second adjusting rod 132, the second adjusting rod 132 extends or pushes forward relative to the support rod 1132 along the Y-axis, thereby driving the corresponding second limiting plate 131 to move along the Y-axis.

[0097] According to some embodiments of this application, such as Figure 2 and combined Figure 1 As shown, a gap 18 is provided between the first crossbar 1131 and the first frame 1121 on the side away from the base plate 111. The end of the support rod 1132 along the first direction is located in the gap 18, and the support rod 1132 can move along the third direction.

[0098] The first direction and the third direction in this embodiment can be referred to the description above, and will not be repeated here.

[0099] In this embodiment, sliders (not shown in the figure) are provided at both ends of the support rod 1132 along the X-axis. When the first crossbar 1131 is connected to the side of the first frame 1121 away from the base plate 111 by bolts, a gap 18 is formed between the first crossbar 1131 and the first frame 1121. The slider is located in the corresponding gap 18, and at the same time, the slider can slide along the Z-axis within the gap 18.

[0100] When the slider slides along the Z-axis within the gap 18, the support rod 1132 can also slide synchronously along the Z-axis. Since the second adjusting rod 132 is connected to the support rod 1132, the second adjusting rod 132 can also move synchronously along the Z-axis.

[0101] Since the second adjusting rod 132 is connected to the second limiting plate 131, the position of the second limiting plate 131 in the Z-axis direction can be adjusted synchronously so that the second limiting plate 131 is located at an appropriate position on the top surface of the battery cell 10.

[0102] According to some embodiments of this application, such as Figure 1 and combined Figure 2 As shown, the bracket 113 also includes a positioning plate 1133, which is connected between the two first crossbars 1131, and the positioning plate 1133 abuts against the opposite sides of the two first frame 1121 on both sides along the first direction.

[0103] This embodiment may include one or two equal positioning plates 1133, which are not limited here.

[0104] After the bottom surfaces of the two first frame frames 1121 are connected to the base plate 111, the corresponding positioning plates 1133 are inserted between the two first frame frames 1121. At this time, the two sides of the positioning plates 1133 along the X-axis direction abut against the opposite sides of the two first frame frames 1121. At the same time, the positioning plates 1133 are bolted between the two first crossbars 1131.

[0105] At this time, by having the positioning plate 1133 abut against the opposite sides of the two first frame 1121 along the X-axis, the relative position of the two first frame 1121 can be defined, thus preventing the upper part of the two first frame 1121 from tilting.

[0106] According to some embodiments of this application, the position of the positioning plate 1133 relative to the first crossbar 1131 in a third direction is adjustable.

[0107] In this embodiment, sliders are respectively provided on both sides of the positioning plate 1133 along the X-axis direction. The sliders are located within the gap 18, and the sliders can slide relative to the gap 18 along the Z-axis direction. In this way, by sliding the sliders within the gap 18 along the Z-axis, the position of the positioning plate 1133 in the Z-axis direction can be adjusted, avoiding interference between the positioning plate 1133 and the battery cell 10.

[0108] According to some embodiments of this application, such as Figure 1 And in combination with 2, Figure 4 As shown, the third limiting component 14 includes a third limiting plate 141 and a third adjusting rod 142. The third limiting plate 141 is disposed in the connecting frame 112, and the third adjusting rod 142 is connected to the second frame 1122. The third adjusting rod 142 is connected to the third limiting plate 141 and is configured to drive the third limiting plate 141 to move in a third direction.

[0109] refer to Figure 1 As shown, in this embodiment, a third limiting component 14 is provided on the left and right sides of the connecting frame 112 along the Z-axis direction.

[0110] In this embodiment, the third adjusting rod 142 can be an adjusting screw, a hydraulic rod, etc., and is not limited here.

[0111] In this embodiment, the third adjusting rod 142 is provided with a threaded section, and the second frame 1122 is provided with a second crossbar 11221. The second crossbar 11221 is provided with an internal thread, which mates with the threaded section. After the threaded section on the third adjusting rod 142 extends into the internal thread, it connects with the third limiting plate 141.

[0112] In use, by rotating the third adjusting rod 142, the third adjusting rod 142 extends or pushes forward relative to the second crossbar 11221 along the Z-axis, thereby driving the corresponding third limiting plate 141 to move along the Z-axis.

[0113] After the battery cell 10 is placed in the connecting frame 112, the first adjusting rod 122 drives the first limiting plate 121 to move along the X-axis direction in the connecting frame 112 and then it is in close contact with the side of the battery cell 10. Then, the second adjusting rod 132 drives the second limiting plate 131 to move along the Y-axis direction in the connecting frame 112 and then it is in close contact with the top surface of the battery cell 10. Finally, the third adjusting rod 142 drives the third limiting plate 141 to move along the Z-axis direction in the connecting frame 112, thereby limiting the front and rear sides, top side, and left and right sides of the battery cell 10.

[0114] According to some embodiments of this application, such as Figure 1 and combined Figure 4As shown, the test fixture also includes an adjustment member 15, which is disposed on the third limiting plate 141 and configured to drive the third limiting plate 141 to move along the second direction.

[0115] In this embodiment, the adjusting component 15 can be a pull ring, a pull hook, etc. The specific one can be determined according to the actual situation, and this specification does not limit it in this embodiment.

[0116] In this embodiment, the adjusting member 15 can be integrally formed with the third limiting plate 141, or the adjusting member 15 can be connected to the third limiting plate 141 by threaded connection, which is not limited here.

[0117] In use, the third limiting plate 141 is moved along the Y-axis by adjusting the adjusting member 15. At this time, the third adjusting rod 142 can be aligned with the screw hole on the third limiting plate 141 so that the third adjusting rod 142 and the third limiting plate 141 can be connected together.

[0118] According to some embodiments of this application, such as Figure 1 As shown, a shim 1411 is provided on at least one side of the third limiting plate 141 along the first direction, and the shim 1411 is configured to adjust the size of the third limiting plate 141 along the first direction.

[0119] In this embodiment, gaskets 1411 can be provided on one or both sides of the third limiting plate 141 along the X-axis direction. The specific arrangement can be determined according to the actual situation, and this embodiment does not limit this.

[0120] In this embodiment, the gasket 1411 can be connected to the side of the third limiting plate 141 along the X-axis by bolts or snap-fit, which is not limited here.

[0121] In this embodiment, a shim 1411 is provided on the side of the third limiting plate 141 along the X-axis direction, thereby increasing the size of the third limiting plate 141 along the X-axis direction so that the overall width of the third limiting plate 141 can be adapted to battery cells 10 of different thicknesses.

[0122] According to some embodiments of this application, such as Figure 1 As shown, the gasket 1411 includes at least two sheets that are detachably connected along a first direction.

[0123] The gasket 1411 in this embodiment may include two or three equal layers. Two adjacent layers can be engaged together along the X-axis by a structure of protrusions and grooves. The specific arrangement can be determined according to the actual situation, and this embodiment does not limit this.

[0124] In this embodiment, by increasing or decreasing the number of corresponding layers, the thickness of the corresponding pad 1411 can be adjusted synchronously, thereby adjusting the size of the third limiting plate 141 along the X-axis, so that the overall width of the third limiting plate 141 can be adapted to battery cells 10 of different thicknesses.

[0125] According to some embodiments of this application, such as Figure 1 As shown, the test fixture also includes a locking element 16, which is configured to rotate any one of the first adjusting rod 122, the second adjusting rod 132, and the third adjusting rod 142.

[0126] The structures of the first adjusting rod 122, the second adjusting rod 132, and the third adjusting rod 142 in this embodiment can be referred to the description above, and will not be repeated here.

[0127] In this embodiment, the locking component 16 can be a wrench, socket, etc., and the specific one can be determined according to the actual situation. This embodiment does not limit this.

[0128] In this embodiment, the locking member 16 can drive the first adjusting rod 122, the second adjusting rod 132 and the third adjusting rod 142 to rotate, or the locking member 16 can drive any two adjusting rods to rotate, or the locking member 16 can drive one of the adjusting rods to rotate. The specifics can be determined according to the actual situation, and this embodiment does not limit this.

[0129] In use, the locking element 16 allows for easy rotation of the corresponding first adjusting rod 122, second adjusting rod 132, or third adjusting rod 142.

[0130] According to some embodiments of this application, such as Figure 5 As shown, a protrusion 1111 is provided on the side of the base plate 111 facing the first frame 1121, and a slot 11211 is provided on the side of the first frame 1121 facing the base plate 111. The slot 11211 and the protrusion 1111 cooperate.

[0131] In this embodiment, when the first frame 1121 is connected to the base plate 111 by bolts, the corresponding slot 11211 is engaged in the protrusion 1111, so that the first frame 1121 can be stably positioned on the base plate 111.

[0132] It is understandable that a protrusion can be provided on the first frame 1121 and a slot can be provided on the base plate 111. The specific details can be determined according to the actual situation, and this specification does not limit this embodiment.

[0133] According to some embodiments of this application, such as Figure 1 As shown, the test fixture also includes multiple rollers 17, which are mounted on the base plate 111.

[0134] This embodiment can be equipped with three or four rollers 17, and the specific configuration can be determined according to the actual situation. This embodiment of the specification does not limit this.

[0135] In this embodiment, the roller 17 can be connected to the bottom surface of the base plate 111 via a bearing seat. The entire fixture can be easily moved by the rolling action of the roller 17.

[0136] Meanwhile, in this embodiment, a braking mechanism may be provided on at least one roller 17.

[0137] In this embodiment, a braking mechanism may be provided on one or both of the rollers 17, but this is not limited here.

[0138] The braking mechanism in this embodiment may include a brake block / brake pad, which is connected to the roller 17 via a bearing housing. The brake block / brake pad is movable relative to the roller 17. When the brake block / brake pad is in close contact with and presses against the surface of the roller 17, friction causes the roller 17 to stop rotating. When the brake block / brake pad separates from the roller 17, the roller 17 resumes its rotational function. It is understood that the above braking mechanism may also include structures such as a brake pin; this is not limited to these specific features.

[0139] This embodiment provides a braking mechanism on the roller 17 to facilitate locking the roller 17 and thus securing the overall clamp.

[0140] This application also provides a battery production line, including a test fixture as described in any of the embodiments of this application.

[0141] The battery production line in this embodiment can be used to produce individual battery cells. The specific structure of the test fixture in this embodiment is the same as that in the above embodiments. Since this battery production line adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be described in detail here.

[0142] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This 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 in that, include: Frame; Two opposing first limiting components are disposed within the frame and configured to limit two surfaces of a battery cell in a first direction. At least one first limiting component is movably connected to the frame so that the relative distance between the two first limiting components is adjustable. At least one second limiting component is disposed within the frame and configured to limit the battery cell in a second direction. The second limiting component is movably connected to the frame so that its position relative to the frame in the second direction is adjustable. A third limiting component is disposed within the frame and configured to limit the battery cell in a third direction. The third limiting component is movably connected to the frame so that its position relative to the frame along the third direction is adjustable. Wherein, the first direction, the second direction, and the third direction are perpendicular to each other.

2. The test fixture according to claim 1, characterized in that, The frame includes a base plate, a connecting frame, and a bracket. The base plate is disposed on one side of the connecting frame along the second direction, and the bracket is disposed on the other side of the connecting frame along the second direction. The first limiting component, the second limiting component, and the third limiting component are all movably connected to the connecting frame.

3. The test fixture according to claim 2, characterized in that, The connecting frame includes two first borders and two second borders. The two first borders are arranged opposite each other along the first direction, and the two second borders are arranged opposite each other along the third direction. The first borders and the second borders are connected end to end. The base plate is disposed on the same side of the first frame and the second frame along the second direction, and the bracket is disposed on the other side of the first frame and the second frame along the second direction.

4. The test fixture according to claim 3, characterized in that, The first limiting component includes a first limiting plate and a first adjusting rod. The first limiting plate is disposed within the connecting frame, and the first adjusting rod is connected to the first frame. The first adjusting rod is connected to the first limiting plate and is configured to drive the first limiting plate to move along the first direction.

5. The test fixture according to claim 4, characterized in that, The first limiting component further includes a fastener configured to connect the two first limiting plates.

6. The test fixture according to claim 4, characterized in that, The second limiting component includes a second limiting plate and a second adjusting rod. The second limiting plate is disposed within the connecting frame, and the second adjusting rod is connected to the bracket. The second adjusting rod is connected to the second limiting plate and is configured to drive the second limiting plate to move along the second direction.

7. The test fixture according to claim 6, characterized in that, The support includes two first crossbars and at least one support rod; Two first crossbars are respectively disposed on the side of the two first frames away from the base plate, the support rod is disposed between the two first crossbars, and the second adjusting rod passes through the support rod and is connected to the second limiting plate.

8. The test fixture according to claim 7, characterized in that, The first crossbar has a gap with the side of the first frame away from the base plate, the end of the support rod along the first direction is located in the gap, and the support rod is movable along the third direction.

9. The test fixture according to claim 7, characterized in that, The bracket also includes a positioning plate, which is connected between the two first crossbars, and the positioning plate abuts against the opposite sides of the two first frames on both sides along the first direction.

10. The test fixture according to claim 9, characterized in that, The position of the positioning plate relative to the first crossbar along the third direction is adjustable.

11. The test fixture according to claim 6, characterized in that, The third limiting component includes a third limiting plate and a third adjusting rod. The third limiting plate is disposed within the connecting frame, and the third adjusting rod is connected to the second frame. The third adjusting rod is connected to the third limiting plate and is configured to drive the third limiting plate to move along the third direction.

12. The test fixture according to claim 11, characterized in that, The test fixture also includes an adjustment member disposed on the third limiting plate and configured to drive the third limiting plate to move along the second direction.

13. The test fixture according to claim 11, characterized in that, The third limiting plate is provided with a shim on at least one side along the first direction, and the shim is configured to adjust the size of the third limiting plate along the first direction.

14. The test fixture according to claim 13, characterized in that, The gasket includes at least two sheets, which are detachably connected along the first direction.

15. The test fixture according to any one of claims 11 to 14, characterized in that, The test fixture also includes a locking element, which is configured to rotate any one of the first adjusting rod, the second adjusting rod, and the third adjusting rod.

16. The test fixture according to claim 3, characterized in that, The base plate has a protrusion on the side facing the first frame, and the first frame has a slot on the side facing the base plate, the slot engaging with the protrusion.

17. The test fixture according to any one of claims 2 to 14, characterized in that, The test fixture also includes multiple rollers, which are mounted on the base plate.

18. A battery production line, characterized in that, Includes the test fixture as described in any one of claims 1 to 17.

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