Test tray and battery production equipment

Abstract

The invention discloses a test tray and battery production equipment. The test tray comprises a tray body, two groups of clamp assemblies and two extrusion bodies, the two groups of clamp assemblies are arranged at intervals along a first direction, and the clamp assemblies are movably arranged on the tray body along the first direction and are used for clamping single batteries; the two extrusion bodies are arranged at intervals in the second direction, the extrusion bodies are arranged on the tray body, each extrusion body comprises a flexible extrusion part, and the flexible extrusion parts are used for being in contact with the battery monomers so as to extrude the battery monomers; wherein the second direction is intersected with the first direction. The test tray provided by the embodiment of the invention can be used as a test tray for the battery monomers with different sizes, and even if the models of the battery monomers are replaced, extra parts do not need to be replaced, so that the test efficiency can be improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a test tray and battery production equipment. Background Art

[0002] Battery cells are widely used in electronic devices, such as mobile phones, laptop computers, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes, and electric tools, etc. Battery cells can include nickel-cadmium battery cells, nickel-hydrogen battery cells, lithium-ion battery cells, and secondary alkaline zinc-manganese battery cells, etc.

[0003] In the development of battery technology, how to improve the testing efficiency of battery production equipment is a research direction in battery technology. Summary of the invention

[0004] The embodiments of the present application provide a test tray and a battery production device, which can improve the test efficiency of the battery production device.

[0005] In a first aspect, an embodiment of the present application provides a test tray, comprising a tray body, two groups of clamp assemblies and two extrusion bodies, wherein the two groups of clamp assemblies are arranged at intervals along a first direction, and the clamp assemblies are movably disposed on the tray body along the first direction for clamping the battery cells; the two extrusion bodies are arranged at intervals along a second direction, and the extrusion bodies are disposed on the tray body, and the extrusion bodies include flexible extrusion portions, and the flexible extrusion portions are used to contact the battery cells to extrude the battery cells; wherein the second direction is arranged to intersect with the first direction.

[0006] In the above scheme, two extrusion bodies arranged at intervals along the second direction are provided on the tray body. When the test tray is used, the battery cell is placed between the two extrusion bodies, and the flexible pressure accumulation part on the extrusion body will contact and squeeze the battery cell to perform the test of the formation process and the like. Since the two sets of clamp assemblies are movable along the first direction and can clamp the battery cell, the test tray of the embodiment of the present application can be used as a test tray for battery cells of different sizes. Even if the model of the battery cell is changed, there is no need to replace additional parts, which can improve the test efficiency.

[0007] In some embodiments, the extrusion body includes at least one deformable bladder, at least a portion of which is formed as a flexible extrusion portion, and has a simple structure. The deformability of the flexible extrusion portion can be easily controlled by adjusting the medium in the bladder.

[0008] In some embodiments, the tray body includes a bottom plate and two side plates arranged relatively and spaced apart along the second direction, the side plates are movably connected to the bottom plate along the second direction, and the extrusion body is arranged on the side plates.

[0009] In the above solution, since the side plates can move relative to the bottom plate along the second direction, the distance between the two side plates can also be adjusted, so that it can be suitable not only for battery cells of different lengths, but also for battery cells of different thicknesses, further broadening the application range of the test tray.

[0010] In some embodiments, a first strip hole is opened in the side plate along a first direction; the tray body further includes an adjusting member, both ends of the adjusting member respectively pass through the first strip hole and are fixed to the side plate, and the clamp assembly is connected to the adjusting member.

[0011] In the above solution, the position of the clamp assembly can be moved by moving the adjusting member along the first strip hole to adapt to battery cells of different sizes. The embodiment of the present application has a simple structure and can facilitate the adjustment of the position of the clamp assembly, thereby further improving the test efficiency.

[0012] In some embodiments, the adjustment member includes an adjustment rod, a fixed column, a locking member and an equal-height column, and both ends of the adjustment rod pass through the first strip hole respectively; the fixed column is sleeved on the outer periphery of the adjustment rod, and the fixed column is located on the side of the side plate facing the extrusion body; the locking member is used to lock the adjustment rod to the side plate, and the locking member is located on the side of the side plate away from the extrusion body, and the two ends of the equal-height column along the second direction are respectively abutted against the two side plates.

[0013] In the above scheme, by adjusting the position of the fixing column, the length of the adjusting rod between the two side plates can be adjusted, so that the distance between the two side plates can be adjusted. By setting the equal height column between the two side plates, the two clamping plates can be prevented from moving towards each other. Through the cooperation of the equal height column, the fixing column and the locking member, the purpose of quickly replacing battery cells of different sizes can be achieved.

[0014] In some embodiments, the clamp assembly includes two battery brackets spaced apart along the second direction, and the two battery brackets are movably connected to the adjusting member along the second direction.

[0015] In the above solution, by adjusting the distance between the two battery brackets along the second direction, the test of battery cells with different thicknesses can be more flexibly adapted.

[0016] In some embodiments, the battery bracket includes a plate body, a hook portion and an elastic portion, and the plate body is formed with an avoidance groove; the hook portion is arranged on the plate body, and the hook portion is connected to the adjusting member; the elastic portion is connected to the plate body, and the elastic portion is used to abut against the adjusting member and is located in the avoidance groove.

[0017] In the above solution, when installing the battery bracket on the adjusting member, it is only necessary to clamp the hook portion of the battery bracket on the adjusting member, and the elastic portion can be deformed and abut against the adjusting member, so as to facilitate the disassembly and assembly of the battery bracket.

[0018] In some embodiments, the side panel includes a side panel body and a first protrusion, the first protrusion protrudes from the side panel body along a third direction, and the first protrusion and the side panel body are combined to form a first groove; wherein the third direction is respectively intersected with the first direction and the second direction; the bottom plate includes a bottom plate body and a second protrusion, the second protrusion protrudes relative to the bottom plate body along the second direction, and the second protrusion and the bottom plate body are combined to form a second groove, the first protrusion is inserted in the second groove, and the second protrusion is inserted in the first groove.

[0019] In the above scheme, the first protrusion of the side plate cooperates with the second groove of the bottom plate, and the first groove of the side plate cooperates with the second protrusion of the bottom plate, so as to facilitate the positioning of the bottom plate and the side plate and improve the assembly efficiency.

[0020] In some embodiments, the bottom plate is provided with a second strip hole extending along the second direction, and the side plate is fixed to the bottom plate through the second strip hole.

[0021] By setting the second strip-shaped hole, the fixing positions of the side plate and the bottom plate can be replaced along the second direction. The fixing method is simple and can achieve the purpose of quickly replacing battery cells of different sizes.

[0022] In some embodiments, the bottom plate is further provided with a third strip hole extending along the second direction, and the clamp assembly is fixed to the bottom plate through the third strip hole.

[0023] In the above solution, the fixing position of the clamp assembly and the bottom plate can be adjusted through the third strip hole, so that the purpose of quickly replacing battery cells of different sizes can be achieved.

[0024] In some embodiments, the tray body further includes a raised portion, which includes a plurality of pads sequentially arranged along a third direction, and the pads are used to support the battery cells; wherein the third direction is respectively arranged to intersect with the first direction and the second direction.

[0025] In the above solution, battery cells of different heights can be tested, further broadening the application scope of the test tray.

[0026] In some embodiments, the clamp assembly is formed with a mounting groove, and an end portion of the raised portion along the first direction is fixed in the mounting groove.

[0027] In the above solution, by providing a mounting groove on the fixture assembly to fix the end of the raising portion, not only the stability of the raising portion can be improved, but also the size of the test tray can be reduced.

[0028] In some embodiments, the tray body further includes a raising column, the clamp assembly is provided with a fixing hole for the raising column to pass through, and the raising column is used to support the raising portion.

[0029] By passing the raising column through the fixing hole and supporting the raising part, the position of the raising part can be fine-tuned, so that battery cells of different heights can be tested.

[0030] In some embodiments, the tray body further includes a limit block disposed on the extrusion body, and the clamp assembly is fixed to the extrusion body via the limit block.

[0031] In the above solution, the stability of the fixture assembly and the extrusion body can be improved by fixing the limit block, thereby improving the reliability of the entire test tray.

[0032] In some embodiments, the clamp assembly is provided with a plurality of first limiting holes along the first direction, and the limiting block is provided with second limiting holes corresponding to the first limiting holes.

[0033] By aligning the second limiting hole of the limiting block with different first limiting holes, the position of the clamp assembly along the first direction can be adjusted, which not only improves the connection stability between the clamp assembly and the extrusion body, but also enables the purpose of quickly replacing battery cells of different sizes.

[0034] In a second aspect, an embodiment of the present application provides a battery production device, including a test tray according to any of the above embodiments.

[0035] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0037] Figure 1 This is a schematic diagram of the structure of a test tray according to some embodiments of the present application;

[0038] Figure 2 A schematic diagram of the structure of an extrusion body in some embodiments of the present application;

[0039] Figure 3 A schematic diagram of the structure of a test tray according to some other embodiments of the present application;

[0040] Figure 4 A partial structural schematic diagram of a test tray according to some embodiments of the present application;

[0041] Figure 5 for Figure 4 A magnified schematic diagram of point A;

[0042] Figure 6 This is a schematic diagram of the structure of the side panels and the bottom panel of some embodiments of the present application;

[0043] Figure 7 A partial structural schematic diagram of a test tray according to some embodiments of the present application;

[0044] Figure 8 A partial structural schematic diagram of a test tray according to some embodiments of the present application;

[0045] Fig. 9 A schematic diagram of the structure of a test tray according to some other embodiments of the present application;

[0046] Fig.10 for Fig. 9 An enlarged schematic diagram of point B.

[0047] The figures are as follows:

[0048] 100, test tray; 10, tray body; 11, bottom plate; 111, bottom plate body; 112, second protrusion; 113, second groove; 114, second strip hole; 115, third strip hole; 12, side plate; 121, first strip hole; 122, side plate body; 123, first protrusion; 124, first groove; 13, limit block; 131, second limit hole; 20, fixture assembly; 21, battery bracket; 211, plate body; 212, hook portion; 213, elastic portion; 214, avoidance groove; 215, connection end; 216, free end; 22, mounting groove; 23, first limiting hole; 30, extrusion body; 31, flexible extrusion portion; 32, frame; 33, flexible cover; 40, adjustment member; 41, adjustment rod; 42, fixing column; 43, locking member; 50, raising portion; 51, cushion block; 200, battery cell; X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0049] The following detailed description and drawings of the embodiments of the present application are used to illustrate the principles of the present application, but cannot be used to limit the scope of the present application, that is, the present application is not limited to the described embodiments.

[0050] In the description of the present application, it should be noted that, unless otherwise specified, "multiple" means more than two; the terms "upper", "lower", "left", "right", "inside", "outside", etc., indicating the orientation or positional relationship, are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. "Vertical" is not strictly vertical, but is within the allowable error range. "Parallel" is not strictly parallel, but is within the allowable error range.

[0051] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0052] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of this application. In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0053] Battery cells may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries or magnesium-ion batteries, etc. Battery cells include electrode assemblies and electrolytes, and the electrode assemblies are composed of positive electrode sheets, negative electrode sheets and separators. Battery cells mainly rely on the movement of metal ions between positive electrode sheets and negative electrode sheets to work. The positive electrode sheet includes a positive electrode current collector and a positive electrode active material layer, and the positive electrode active material layer is coated on the surface of the positive electrode current collector. The current collector that is not coated with the positive electrode active material layer protrudes from the current collector that is coated with the positive electrode active material layer, and the current collector that is not coated with the positive electrode active material layer is stacked as a positive electrode ear. Taking lithium-ion batteries as an example, the material of the positive electrode current collector may be aluminum, and the positive electrode active material may be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganese oxide, etc. The negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer. The negative electrode active material layer is coated on the surface of the negative electrode current collector. The current collector not coated with the negative electrode active material layer protrudes from the current collector coated with the negative electrode active material layer. The current collector not coated with the negative electrode active material layer is stacked as a negative electrode tab. The material of the negative electrode current collector can be copper, and the negative electrode active material can be carbon or silicon. The material of the isolation film can be PP (polypropylene, polypropylene) or PE (polyethylene, polyethylene), etc.

[0054] In the production process of battery cells, the formation process is a very important step. The formation is mainly the process of charging the battery cells for the first time to activate the battery cells. In this process, the solvent and lithium salt in the electrolyte react with each other, forming a solid electrolyte phase interface film at the negative electrode of the battery cell. At the same time, the solvent and some additives in the electrolyte will be reduced or decomposed, causing serious gas production inside the battery cell. If the gas generated by the formation cannot be discharged in time, on the one hand, it will cause the battery to swell, the group margin will be reduced, and the electrolyte in the battery cell will not be able to completely infiltrate the negative electrode. The position that is not fully infiltrated will form dry black spots without lithium embedding, and lithium deposition will appear around the black spots. On the other hand, the lithium ions released from the positive electrode are prone to lithium deposition around the bubbles, which will affect the performance of the battery cell.

[0055] In order to mitigate the impact of gas on battery cells, the relevant technology fixes the battery cells in a restraint tray during the formation process, and uses the battery cells in the restraint tray to squeeze each other to promote the gas generated inside the battery cells to squeeze out of the battery cells. Due to the large size of the tray, the tray needs to be filled with battery cells before it can be used, and it is impossible to perform tray performance testing and evaluation on battery cells of different sizes in the laboratory, thereby reducing the testing efficiency of battery production equipment.

[0056] In view of this, the present application provides a technical solution, in which a test tray includes a tray body, two groups of clamp assemblies and two extrusion bodies, the two groups of clamp assemblies are arranged at intervals along a first direction, the clamp assemblies are movably arranged on the tray body along the first direction, and are used to clamp the battery cells; the two extrusion bodies are arranged at intervals along a second direction, the extrusion bodies are arranged on the tray body, and the extrusion bodies are provided with flexible extrusion portions, which are used to contact the battery cells to extrude the battery cells; wherein the second direction is arranged to intersect with the first direction.

[0057] In the above scheme, two extrusion bodies arranged at intervals along the second direction are provided on the tray body. When the test tray is used, the battery cell is placed between the two extrusion bodies, and the flexible pressure accumulation part on the extrusion body will contact and squeeze the battery cell to perform the test of the formation process and the like. Since the two sets of clamp assemblies are movable along the first direction and can clamp the battery cell, the test tray of the embodiment of the present application can be used as a test tray for battery cells of different sizes. Even if the model of the battery cell is changed, there is no need to replace additional parts, which can improve the test efficiency.

[0058] Figure 1 This is a schematic diagram of the structure of a test tray according to some embodiments of the present application; Figure 2 This is a schematic diagram of the structure of the extrusion body of some embodiments of the present application.

[0059] Please refer to Figure 1 and Figure 2 In a first aspect, an embodiment of the present application provides a test tray 100, which includes a tray body 10, two groups of clamp assemblies 20 and two extrusion bodies 30. The two groups of clamp assemblies 20 are arranged at intervals along a first direction X, and the clamp assemblies 20 are movably disposed on the tray body 10 along the first direction X, and are used to clamp the battery cells 200; the two extrusion bodies 30 are arranged at intervals along a second direction Y, and the extrusion bodies 30 are disposed on the tray body 10. The extrusion bodies 30 are provided with flexible extrusion portions 31, and the flexible extrusion portions 31 are used to contact the battery cells 200 to squeeze the battery cells 200; wherein the second direction Y is arranged to intersect with the first direction X.

[0060] It should be noted that the test tray 100 of the embodiment of the present application is not only limited to the test tray 100 of the formation process, but is also applicable to the test tray 100 of the capacity tester. Capacity tester (also known as capacity machine, battery capacity test equipment) is a device for evaluating the capacity characteristics of a battery. They are generally used to measure the energy storage capacity of a battery under different charging and discharging conditions, that is, the amount of electrical energy that a battery can store and release. The capacity tester charges the battery and records the amount of charge released by simulating the charging and discharging process in the actual use scenario, thereby calculating the capacity of the battery. This helps to verify whether the battery meets the capacity standards specified by the manufacturer and evaluate whether its performance meets the expected requirements.

[0061] For ease of understanding, the following embodiments are explained by taking the application of the test tray 100 in a chemical formation process as an example.

[0062] The tray body 10 is a component for supporting the battery cells 200. The tray body 10 can be a U-shaped tray or a box-type tray. The tray body 10 can be integrally formed or assembled by splicing. The material of the tray body 10 can be but not limited to metal, plastic, inorganic non-metal or wood.

[0063] The extrusion body 30 is a component used to extrude the battery cell 200, and the flexible extrusion portion 31 is a component that will deform when subjected to force. The extrusion body 30 includes at least one deformable bladder, at least part of which is formed as the flexible extrusion portion 31. The bladder refers to a flexible container that can be filled with a medium and uses the compressibility and / or fluidity of the medium to achieve elastic deformation. Here, the bladder can be deformed by adjusting the amount of medium that is poured into it, such as expanding the bladder by inflation and shrinking the bladder by exhaust. It can also be deformed by changing the state of the medium in the bladder, such as vaporizing the water in the bladder by increasing the temperature, causing the bladder to expand, and condensing the steam in the bladder by cooling, causing the bladder to shrink. It should be noted that the medium can be a medium that is gaseous at room temperature, such as air, inert gas, nitrogen, etc., in which case the capsule is an air capsule; it can also be a medium that is liquid at room temperature, such as water, oil, etc., in which case the capsule is a liquid capsule; it can even be a medium that is solid at room temperature, such as paraffin, which melts into liquid after heating. The structure of the capsule is simple, and the deformable amount of the flexible extrusion part can be easily controlled by adjusting the medium in the capsule.

[0064] Specifically, the capsule body includes a frame body 32 and a flexible cover 33, wherein the frame body 32 is rigid, and the flexible cover 33 covers at least one side of the frame opening of the frame body 32, and the frame body 32 and the flexible cover 33 enclose a capsule cavity, and the flexible cover 33 forms a flexible extrusion portion 31. The flexible cover 33 is a part that is difficult for the medium to pass through and can be deformed, and the material of the flexible cover 33 can be but is not limited to silicone, cowhide, rubber or latex.

[0065] The fixture assembly 20 can be connected to the tray body 10 through a slider, or can be driven by a driving mechanism, or can be moved along the first direction X by sliding the adjusting member 40 relative to the tray body 10. The first direction X can be the length direction of the battery cell 200, and the second direction Y can be the thickness direction of the battery cell 200. When using the test tray 100, the battery cell 200 is placed between two extrusion bodies 30, and the spacing between the two fixture assemblies 20 along the first direction X can be adjusted according to the length of the battery cell 200 to clamp the battery cell 200 on opposite sides along the first direction X, and then the battery cell 200 is extruded by the extrusion body 30 to test the extrusion body 30. The test tray 100 of the embodiment of the present application can be used for the verification of the interface effect test of the formation process, and can also be used for the parameter verification of the extrusion body 30. Exemplarily, the capsule of the extrusion body 30 is an airbag, which can be used for the airbag pressure of different battery cells 200, the hardness of the flexible cover 33, the fixed elongation, the airbag service life and other parameter verification.

[0066] In summary, the embodiment of the present application sets two extrusion bodies 30 arranged at intervals along the second direction Y on the tray body 10. When the test tray 100 is used, the battery cell 200 is placed between the two extrusion bodies 30. The flexible pressure accumulation portion on the extrusion body 30 will contact the battery cell 200 and squeeze the battery cell 200 to perform tests on the formation process and the like. Since the two sets of clamp assemblies 20 are movable along the first direction X and can clamp the battery cell 200, the test tray 100 of the embodiment of the present application can be used as a test tray 100 for battery cells 200 of different sizes. Even if the model of the battery cell 200 is changed, there is no need to replace additional parts, which can improve the test efficiency.

[0067] In some embodiments, the tray body 10 includes a bottom plate 11 and two side plates 12 arranged relatively spaced apart along the second direction Y. The side plates 12 are movably connected to the bottom plate 11 along the second direction Y, and the extrusion body 30 is disposed on the side plates 12 .

[0068] The extrusion body 30 is arranged on the side of the side plate 12 facing the battery cell 200, and the side plate 12 can be connected to the bottom plate 11 by bolts. For example, a plurality of bolt holes are respectively opened on the bottom plate 11 along the second direction Y, and then the corresponding bolt holes are selected to connect the side plate 12 according to the thickness of the battery cell 200; or a strip hole extending along the second direction Y is arranged on the bottom plate 11, and the connection position of the side plate 12 in the strip hole can be adjusted according to the thickness of the battery cell 200. In addition, a guide column can be arranged on the bottom plate 11 along the second direction Y, and a slider can be arranged on the side plate 12, and the distance between the two side plates 12 can be adjusted by sliding the slider along the guide column.

[0069] The bottom plate 12 may be a flat plate or an arc plate with a certain curvature. The side plate 12 may be a flat plate to accommodate the testing of square shell batteries. Alternatively, the side plate 12 may be a curved surface or a cup shape to accommodate the testing of cylindrical batteries.

[0070] In the above scheme, since the side plate 12 can move relative to the bottom plate 11 along the second direction Y, the distance between the two side plates 12 can also be adjusted, so that it can be suitable not only for battery cells 200 of different lengths, but also for battery cells 200 of different thicknesses, further broadening the application scope of the test tray 100.

[0071] In some embodiments, the side plate 12 is provided with a first strip hole 121 along the first direction X; the tray body 10 further includes an adjusting member 40 , both ends of which pass through the first strip hole 121 and are fixed to the side plate 12 , and the clamp assembly 20 is connected to the adjusting member 40 .

[0072] Each clamp assembly 20 can be connected to one or two adjusting members 40. For example, two first strip holes 121 are respectively provided at the left end of each side plate 12, and two first strip holes 121 are respectively provided at the right end. The first strip holes 121 can be long elliptical holes or rectangular holes.

[0073] In the above solution, the position of the clamp assembly 20 can be moved by moving the adjusting member 40 along the first strip hole 121 to adapt to battery cells 200 of different sizes. The embodiment of the present application has a simple structure and can easily adjust the position of the clamp assembly 20, thereby further improving the test efficiency.

[0074] Figure 1 This is a schematic diagram of the structure of a test tray according to some embodiments of the present application; Figure 3 Schematic diagram of the structure of the test tray according to some other embodiments of the present application.

[0075] Please refer to Figure 1 and Figure 3 In some embodiments, the adjusting member 40 includes an adjusting rod 41, a fixing column 42, a locking member 43 and an equal height column 44, and both ends of the adjusting rod 41 respectively pass through the first strip hole 121; the fixing column 42 is sleeved on the outer periphery of the adjusting rod 41, and the fixing column 42 is located on the side of the side plate 12 facing the extrusion body 30; the locking member 43 is used to lock the adjusting rod 41 to the side plate 12, and the locking member 43 is located on the side of the side plate 12 away from the extrusion body 30.

[0076] The adjusting rod 41 passes through the fixing column 42 and the first strip hole 121 respectively. The fixing column 42 can be sleeved on the outer periphery of the adjusting rod 41 through interference fit. The fixing column 42 can move along the adjusting rod 41, but there is a certain tension between the fixing column 42 and the adjusting rod 41. Two fixing columns 42 can be sleeved on the outer periphery of each adjusting rod 41, and the two fixing columns 42 are respectively abutted against the two side plates 12 in a one-to-one correspondence. The locking member 43 can be a bolt, and a thread can be set at the end of the adjusting rod 41, and the fixing of the adjusting rod 41 is achieved by threaded connection. Or the locking member 43 is a buckle, and the end of the adjusting rod 41 is fixed by snap connection.

[0077] When using the test tray 100, the side plate 12 can be moved according to the thickness of the battery cell 200, and then the fixing column 42 can be slid to the side of the side plate 12 facing the battery cell 200, so that the fixing column 42 is in contact with the side plate 12, and then the adjustment rod 41 is locked on the side of the side plate 12 away from the battery cell 200 through the locking piece 43.

[0078] Both ends of the equal-height column 44 can abut against the two side panels 12 to prevent the two side panels 12 from moving closer to each other, so that a certain spacing distance is maintained between the two side panels 12 .

[0079] A limiting groove 125 can be set on one side of the side plate 12 and along the circumference of the first strip hole 121, and the fixed column 42 and the equal-height column 44 are respectively abutted against the limiting groove 125, which is equivalent to the end of the fixed column 42 and the end of the equal-height column 44 being respectively located in the limiting groove 125, so as to limit the fixed column 42 and the equal-height column 44 and prevent the fixed column 42 and the equal-height column 44 from moving.

[0080] In the above solution, by adjusting the position of the fixing column 42, the length of the adjusting rod 41 between the two side plates 12 can be adjusted, thereby adjusting the distance between the two side plates 12. By cooperating with the fixing column 42 and the locking member 43, the purpose of quickly replacing battery cells 200 of different sizes can be achieved.

[0081] In some embodiments, the clamp assembly 20 includes two battery brackets 21 spaced apart along the second direction Y, and the two battery brackets 21 are movably connected to the adjusting member 40 along the second direction Y, respectively.

[0082] The battery bracket 21 can be connected to the adjusting member 40 by means of clamping, bolts, etc. By adjusting the connection position of the battery bracket 21 on the adjusting member 40, the distance between the two battery brackets 21 can be adjusted.

[0083] In the above solution, by adjusting the interval between the two battery brackets 21 along the second direction Y, the test of battery cells 200 with different thicknesses can be more flexibly adapted.

[0084] Figure 4A partial structural schematic diagram of a test tray according to some embodiments of the present application; Figure 5 for Figure 4 An enlarged schematic diagram of point A.

[0085] Please refer to Figure 4 and Figure 5 In some embodiments, the battery bracket 21 includes a board body 211, a hook portion 212 and an elastic portion 213, and the board body 211 is formed with an avoidance groove 214; the hook portion 212 is arranged on the board body 211, and the hook portion 212 is connected to the adjusting member 40; the elastic portion 213 is connected to the board body 211, and the elastic portion 213 is used to abut against the adjusting member 40, and is located in the avoidance groove 214.

[0086] The battery bracket 21 can be an integrally formed part or assembled from different parts. The hook portion 212 has a notch and can cover part of the outer periphery of the adjusting member 40. The elastic portion 213 can be made of plastic, stainless steel, etc., and can be deformed to a certain extent. Alternatively, the entire battery bracket 21 is made of plastic, stainless steel, etc., and the thickness of the elastic portion 213 is relatively thin, so that it can be deformed.

[0087] The elastic part 213 has a connecting end 215 and a free end 216, and the connecting end 215 of the elastic part 213 is connected to the board body 211. When the battery bracket 21 needs to be assembled, the elastic part 213 can be pressed so that the free end 216 of the elastic part 213 is bent close to the avoidance groove 214, and then the hook part 212 is hung on the outer periphery of the adjustment member 40, and then the elastic part 213 is released, and the elastic part 213 restores its deformation and abuts against the adjustment member 40, so that the battery bracket 21 is fixed to the adjustment member 40. When the battery bracket 21 needs to be disassembled, the elastic part 213 can also be pressed so that the free end 216 of the elastic part 213 is bent close to the avoidance groove 214, and then the board body 211 is moved upward, so that the hook part 212 is separated from the adjustment member 40, and the battery bracket 21 is taken out.

[0088] In the above solution, when installing the battery bracket 21 on the adjusting member 40 , it is only necessary to clamp the hook portion 212 of the battery bracket 21 on the adjusting member 40 , and the elastic portion 213 can be deformed and abut against the adjusting member 40 , making it easy to disassemble and assemble the battery bracket 21 .

[0089] Figure 6 This is a schematic diagram of the structure of the side panels and the bottom panel of some embodiments of the present application.

[0090] like Figure 6As shown, in some embodiments, the side panel 12 includes a side panel body 122 and a first protrusion 123, the first protrusion 123 protrudes from the side panel body 122 along a third direction Z, and the first protrusion 123 and the side panel body 122 are combined to form a first groove 124; wherein the third direction Z is respectively intersected with the first direction X and the second direction Y; the bottom plate 11 includes a bottom plate body 111 and a second protrusion 112, the second protrusion 112 is protruded relative to the bottom plate body 111 along the second direction Y, the second protrusion 112 and the bottom plate body 111 are combined to form a second groove 113, the first protrusion 123 is inserted in the second groove 113, and the second protrusion 112 is inserted in the first groove 124.

[0091] Exemplarily, the first protrusion 123 is located at the lower end of the side plate body 122, and the first groove 124 is located beside the first protrusion 123. Second protrusions 112 are provided on the left and right sides of the bottom plate 11, and the second groove 113 is located between the two second protrusions 112.

[0092] The sizes of the first protrusion 123 and the second groove 113 can match, so that the first protrusion 123 can move along the second groove 113. Similarly, the sizes of the second protrusion 112 and the first groove 124 can match, so that the second protrusion 112 can move along the first groove 124.

[0093] In the above scheme, by the mutual cooperation between the first protrusion 123 of the side panel 12 and the second groove 113 of the bottom panel 11, and the mutual cooperation between the first groove 124 of the side panel 12 and the second protrusion 112 of the bottom panel 11, the positioning of the bottom panel 11 and the side panel 12 can be facilitated, thereby improving the assembly efficiency.

[0094] In some embodiments, the bottom plate 11 defines a second strip hole 114 extending along the second direction Y, and the side plate 12 is fixed to the bottom plate 11 through the second strip hole 114 .

[0095] The second strip hole 114 may be an elongated elliptical hole or a rectangular hole. A fixing hole may be opened at the bottom of the side plate 12, and bolts may be passed through the second strip hole 114 and the fixing hole of the side plate 12 in sequence to fix the bottom plate 11 to the side plate 12. The fixing position of the bolt may be adjusted along the second strip hole 114 according to the thickness of the battery cell 200. The number of the second strip holes 114 may be multiple, for example, the second strip holes 114 may be set at the corners of the bottom plate 11, and at least two second strip holes 114 may be set at each corner.

[0096] In the above solution, by setting the second strip hole 114, the fixing position of the side plate 12 and the bottom plate 11 can be replaced along the second direction Y. The fixing method is simple and can achieve the purpose of quickly replacing battery cells 200 of different sizes.

[0097] In some embodiments, the bottom plate 11 further defines a third strip hole 115 extending along the second direction Y, and the clamp assembly 20 is fixed to the bottom plate 11 through the third strip hole 115 .

[0098] The second strip hole 114 and the third strip hole 115 may be parallel to each other and spaced apart from each other. The third strip hole 115 may be an elongated elliptical hole or a rectangular hole. A fixing hole may be opened at the bottom of the clamp assembly 20, and bolts may be passed through the third strip hole 115 and the fixing hole of the clamp assembly 20 in sequence to fix the base plate 11 to the clamp assembly 20. And the fixing position of the bolt may be adjusted along the third strip hole 115 according to the thickness of the battery cell 200. The number of the third strip holes 115 may be multiple, for example, the third strip holes 115 may be set at the corners of the base plate 11.

[0099] In the above solution, the fixing position of the clamp assembly 20 and the bottom plate 11 can be adjusted through the third strip hole 115, so that the purpose of quickly replacing battery cells 200 of different sizes can be achieved.

[0100] Figure 7 This is a partial structural schematic diagram of a test tray according to some embodiments of the present application.

[0101] like Figure 7 As shown, in some embodiments, the tray body 10 further includes a raising portion 50, which includes a plurality of pads 51 arranged in sequence along a third direction Z, and the pads 51 are used to support the battery cells 200; wherein the third direction Z is arranged to intersect with the first direction X and the second direction Y respectively.

[0102] The pad 51 may extend along the first direction X and be in the shape of a rectangular parallelepiped. The pad 50 may be disposed on the side of the extrusion body 30 facing the battery cell 200. During testing, the battery cell 200 may be placed on the upper side of the pad 50, that is, the battery cell 200 is in contact with the pad 51 at the uppermost end. When it is necessary to replace a battery cell 200 of a different height, it is only necessary to reduce or increase the number of pads 51 so that the battery cell 200 can be completely located between the two flexible extrusion parts 31.

[0103] In the above solution, battery cells 200 of different heights can be tested, further broadening the application scope of the test tray 100 .

[0104] In some embodiments, the clamp assembly 20 is formed with a mounting groove 22 , and an end portion of the raised portion 50 along the first direction X is fixed in the mounting groove 22 .

[0105] The mounting groove 22 can be arranged on the side of the clamp assembly 20 facing the side plate 12. Specifically, the mounting groove 22 can be formed by being recessed on the side of the plate body 211 of the battery bracket 21 facing the side plate 12. The two ends of the raised portion 50 are located in the mounting groove 22, and the two ends of the raised portion 50 are clamped between the extrusion body 30 and the clamp assembly 20.

[0106] In the above solution, by providing the mounting groove 22 on the fixture assembly 20 to fix the end of the raising portion 50 , not only the stability of the raising portion 50 can be improved, but also the size of the test tray 100 can be reduced.

[0107] Figure 8 This is a partial structural schematic diagram of a test tray according to some embodiments of the present application.

[0108] like Figure 8 As shown, the tray body 10 further includes a heightening column (not shown), and the clamp assembly 20 is provided with a fixing hole 20 a for the heightening column to pass through, and the heightening column is used to support the heightening portion 50 .

[0109] A fixing hole 20a may be opened at the bottom of the battery bracket 21. The fixing hole 20a may be a threaded hole. The raising column may be a bolt. After the raising column passes through the fixing hole 20a, the raising portion 50 may be raised or lowered by adjusting the position of the raising column up and down.

[0110] In the embodiment of the present application, the raising column passes through the fixing hole 20 a to support the raising portion 50 , so that the position of the raising portion 50 can be fine-tuned, and the battery cells 20 of different heights can be tested.

[0111] Fig. 9 Schematic diagram of the structure of the test tray according to some other embodiments of the present application.

[0112] like Fig. 9 As shown, in some embodiments, the tray body 10 further includes a limit block 13 disposed on the extrusion body 30 , and the clamp assembly 20 is fixed to the extrusion body 30 via the limit block 13 .

[0113] The limit block 13 can be arranged at the corner of the extrusion body 30. For example, a slot is arranged at the corner of the extrusion body 30, and the limit block 13 is accommodated in the slot. The limit block 13 can be fixed to the extrusion body 30 by bolts, bonding, welding, etc. The limit block 13 can be fixed to the clamp assembly 20 by bolts, clamping, etc.

[0114] In the above solution, by fixing the limiting block 13 , the stability of the clamp assembly 20 and the extrusion body 30 can be improved, thereby improving the reliability of the entire test tray 100 .

[0115] Fig.10 for Fig. 9 The enlarged schematic diagram of point B. Fig.10 As shown, in some embodiments, the clamp assembly 20 is provided with a plurality of first limiting holes 23 along the first direction X, and the limiting block 13 is provided with second limiting holes 131 corresponding to the first limiting holes 23 .

[0116] Exemplarily, two second limiting holes 131 are provided on the limiting block 13. When the clamp assembly 20 needs to be adjusted to adapt to battery cells 200 of different lengths, the clamp assembly 20 can be moved, and then the second limiting holes 131 on the limiting block 13 are aligned with the corresponding first limiting holes 23, and then bolts are passed through the second limiting holes 131 and the first limiting holes 23 in sequence to lock the limiting block 13 and the clamp assembly 20.

[0117] In the above scheme, by aligning the second limiting hole 131 of the limiting block 13 with different first limiting holes 23, the position of the clamp assembly 20 along the first direction X can be adjusted, which not only improves the connection stability between the clamp assembly 20 and the extrusion body 30, but also achieves the purpose of quickly replacing battery cells 200 of different sizes.

[0118] In a second aspect, an embodiment of the present application provides a battery production device, including a test tray 100 according to any of the above embodiments.

[0119] According to some embodiments of the present application, the present application provides a test tray 100, which includes a tray body 10, two sets of clamp assemblies 20 and two extrusion bodies 30, wherein the two sets of clamp assemblies 20 are arranged at intervals along a first direction X, and the clamp assemblies 20 are movably arranged on the tray body 10 along the first direction X, and are used to clamp the battery cells 200; the two extrusion bodies 30 are arranged at intervals along a second direction Y, and the extrusion bodies 30 are arranged on the tray body 10, and the extrusion bodies 30 are provided with flexible extrusion parts 31, and the flexible extrusion parts 31 are used to contact with the battery cells 200 to extrude the battery cells 200; wherein the second direction Y is arranged to intersect with the first direction X. The tray body 10 includes a bottom plate 11 and two side plates 12 arranged at intervals along the second direction Y, and the side plates 12 are movably connected to the bottom plate 11 along the second direction Y, and the extrusion bodies 30 are arranged on the side plates 12.

[0120] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A test tray, characterized in that: include: Tray body; Two groups of clamp assemblies, the two groups of clamp assemblies are arranged at intervals along a first direction, and the clamp assemblies are movably disposed on the tray body along the first direction for clamping the battery cells; Two extrusion bodies are arranged at intervals along a second direction, the extrusion bodies are arranged on the tray body, the extrusion bodies include a flexible extrusion portion, and the flexible extrusion portion is used to contact the battery cell to extrude the battery cell; wherein the second direction is arranged to intersect with the first direction.

2. The test tray according to claim 1, characterized in that: The extrusion body includes at least one deformable bladder, at least a portion of which is formed as the flexible extrusion portion.

3. The test tray according to claim 1, characterized in that: The tray body includes a bottom plate and two side plates arranged relatively and spaced apart along the second direction, the side plates are movably connected to the bottom plate along the second direction, and the extrusion body is arranged on the side plates.

4. The test tray according to claim 3, characterized in that: The side plate is provided with a first strip-shaped hole along the first direction; The tray body further comprises an adjusting member, two ends of which respectively pass through the first strip-shaped hole and are fixed to the side plate, and the clamp assembly is connected to the adjusting member.

5. The test tray according to claim 4, characterized in that: The adjusting member comprises: An adjusting rod, both ends of which pass through the first strip-shaped hole respectively; A fixing column, which is sleeved on the outer periphery of the adjusting rod and is located on a side of the side plate facing the extrusion body; A locking member, used to lock the adjusting rod to the side plate, and the locking member is located on a side of the side plate away from the extrusion body; The two ends of the equal-height column along the second direction are respectively in contact with the two side plates.

6. The test tray according to claim 4, characterized in that: The clamp assembly includes two battery brackets spaced apart along the second direction, and the two battery brackets are movably connected to the adjusting member along the second direction respectively.

7. The test tray according to claim 6, characterized in that: The battery bracket comprises: The plate body is formed with an avoidance groove; A hook portion, disposed on the plate body, the hook portion being connected to the adjusting member; The elastic part is connected to the plate body, and is used to abut against the adjusting member and is located in the avoidance groove.

8. The test tray according to claim 3, characterized in that: The side plate includes a side plate body and a first protruding portion, wherein the first protruding portion is protruding from the side plate body along a third direction, and the first protruding portion and the side plate body are combined to form a first groove; wherein the third direction is respectively intersected with the first direction and the second direction; The base plate includes a base plate body and a second protrusion, the second protrusion is protruding along the second direction relative to the base plate body, the second protrusion and the base plate body are combined to form a second groove, the first protrusion is inserted in the second groove, and the second protrusion is inserted in the first groove.

9. The test tray according to claim 3, characterized in that: The bottom plate is provided with a second strip hole extending along the second direction, and the side plate is fixed to the bottom plate through the second strip hole.

10. The test tray according to claim 3, characterized in that: The bottom plate is further provided with a third strip hole extending along the second direction, and the clamp assembly is fixed to the bottom plate through the third strip hole.

11. The test tray according to any one of claims 1 to 10, characterized in that: The tray body further includes a raising portion, which includes a plurality of pads sequentially arranged along a third direction, and the pads are used to support the battery cells; wherein the third direction is respectively arranged to intersect with the first direction and the second direction.

12. The test tray according to claim 11, characterized in that: The clamp assembly is formed with a mounting groove, and the end of the raised portion along the first direction is fixed in the mounting groove.

13. The test tray according to claim 12, characterized in that: The tray body further comprises a raising column, the clamp assembly is provided with a fixing hole for the raising column to pass through, and the raising column is used to support the raising portion.

14. The test tray according to any one of claims 1 to 10, characterized in that: The tray body further comprises a limit block arranged on the extrusion body, and the clamp assembly is fixed to the extrusion body via the limit block.

15. The test tray according to claim 14, characterized in that: The clamp assembly is provided with a plurality of first limiting holes along the first direction, and the limiting block is provided with second limiting holes corresponding to the first limiting holes.

16. A battery production device, characterized in that: Comprising the test tray according to any one of claims 1-15.

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