End plate of battery module, battery module, battery and electric device

Abstract

Provided in the present application are an end plate of a battery module, a battery module, a battery and an electric device. The end plate is provided with a first end surface and a second end surface which are oppositely arranged in a first direction, wherein the first end surface is configured to face away from a cell of the battery, and the second end surface is configured to face the cell thereof; the end plate is provided with a groove recessed in the first end surface, a second groove body of the groove is located on one side of a first groove body in a second direction, and the size of the second groove body in a third direction is greater than the size of the first groove body in the third direction, such that the groove is L shaped; and an external lifting tool, such as a lifting hook, can enter the second groove body via the first groove body to lift the end plate, and can also be disengaged from contact with the end plate by means of the first groove body, such that the space outside the end plate that is occupied by the lifting tool is reduced, thereby reducing the occupied space during assembly of the battery, facilitating more convenient assembly of the battery, and facilitating an improvement in the production efficiency of the battery.

Description

Battery module end plate, battery module, battery and power-consuming device

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application 202321767826.1, filed on July 6, 2023, entitled “End plate of battery module, battery module, battery and electrical device”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application relates to the field of battery technology, and in particular to an end plate of a battery module, a battery module, a battery, and an electrical device. Background Art

[0004] Batteries have the advantages of high specific energy and high power density. They are widely used in electronic devices and transportation vehicles, such as mobile phones, laptops, electric vehicles, electric airplanes, electric ships, and electric tools.

[0005] As the application scope of batteries continues to expand in various fields, the market demand for batteries is also increasing. How to improve the production efficiency of batteries has attracted more and more attention from those skilled in the art.

[0006] Summary of the Invention

[0007] In view of the above problems, the present application provides an end plate of a battery module, a battery module, a battery and an electrical device. The end plate of the battery module can reduce the space occupied during battery assembly, making battery assembly more convenient.

[0008] In a first aspect, some embodiments of the present application provide an end plate of a battery module, which is provided with a first end face and a second end face arranged opposite to each other along a first direction, the first end face is configured to face away from the battery cell of the battery, and the second end face is configured to face the battery cell; the end plate is provided with a groove recessed in the first end face, the groove includes a first groove body and a second groove body that are connected, the second groove body is located on one side of the first groove body along the second direction, the size of the second groove body along the third direction is larger than the size of the first groove body along the third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0009] Through the above structure, the groove on the end plate is L-shaped, and external lifting tools such as hooks can enter the second trough through the first trough to lift the end plate, and can also break away from the contact with the end plate through the first trough, reducing the space occupied by the lifting tool outside the end plate, thereby reducing the space occupied during battery assembly, making battery assembly more convenient, and helping to improve battery production efficiency.

[0010] According to the end plate of the battery module provided in some embodiments of the present application, the first groove body extends to the edge of the end plate along the second direction and forms an opening, so that the first groove body is connected with the outside of the end plate through the opening along the second direction, so that a hook or other hanging tool can enter the groove from the outside by moving along the second direction, making it convenient to connect the hook or other hanging tool with the end plate.

[0011] According to the end plate of the battery module provided in some embodiments of the present application, in the second direction, the second trough body and the edge of the end plate are spaced apart, and a limiting structure is formed between the second trough body and the edge of the end plate. The limiting structure can limit the hooks and other slings entering the second trough body, reduce the movement of the hooks and other slings in the second trough body in the second direction, and improve the stability of the connection between the hooks and other slings and the end plate.

[0012] According to the end plate of the battery module provided in some embodiments of the present application, the groove surface of the second groove body includes a first bottom surface and two first side surfaces, the first bottom surface faces the first groove body along the second direction, and the two first side surfaces are spaced apart along the third direction and connected to the two ends of the first bottom surface.

[0013] According to the end plate of the battery module provided in some embodiments of the present application, a first trough body is provided with a second side surface at one end along the third direction, and the first side surface and the second side surface are coplanar, so that the first trough body is connected to one end of the second trough body in the third direction.

[0014] According to the end plate of the battery module provided in some embodiments of the present application, the end plate is provided with a first positioning hole, which is connected to the groove and is used to position a lifting tool such as a hook and the end plate.

[0015] According to the end plate of the battery module provided in some embodiments of the present application, the first positioning hole is connected to the second trough body and extends along the third direction, and the connecting member can be conveniently connected to the hanger located in the second trough body through the first positioning hole.

[0016] According to the end plate of the battery module provided in some embodiments of the present application, the end plate is provided with a second positioning hole, which is arranged on the inner wall of the groove and corresponds to the first positioning hole, so that after the connecting part passes through the first positioning hole and is connected to the hanger, it can also be passed through the second positioning hole, which is beneficial to improving the connection stability between the hanger and the end plate.

[0017] According to the end plate of the battery module provided in some embodiments of the present application, the second positioning hole is a blind hole.

[0018] According to the end plate of the battery module provided in some embodiments of the present application, the first positioning hole and the second positioning hole are respectively located on the two first side surfaces, so that the hanger located in the second trough body can be connected to the connecting piece connected to the first positioning hole and the second positioning hole.

[0019] In a second aspect, some embodiments of the present application provide a battery module comprising a plurality of battery cells and two end plates of the battery module according to any of the above technical solutions, wherein the two end plates are spaced apart along a first direction; and a plurality of battery cells are stacked between the two end plates.

[0020] In a second aspect, some embodiments of the present application provide a battery, which includes a box and a battery module of the above technical solution, and the battery module is arranged in the accommodating space of the box.

[0021] In a third aspect, some embodiments of the present application provide an electrical device, which includes a battery provided by the above technical solution, and the battery is used to provide electrical energy.

[0022] The technical solutions provided by the embodiments of the present disclosure bring at least the following beneficial effects:

[0023] The present application provides an end plate of a battery module, which is provided with a first end face and a second end face arranged opposite to each other along a first direction, the first end face is configured to face away from the battery cell of the battery, and the second end face is configured to face the battery cell; the end plate is provided with a groove recessed in the first end face, the second groove body in the groove is located on one side of the first groove body along the second direction and the size of the second groove body along the third direction is larger than the size of the first groove body along the third direction, so that the groove is L-shaped, and an external lifting tool such as a hook can enter the second groove body through the first groove body to lift the end plate, and can also be disengaged from the end plate through the first groove body, reducing the space occupied by the lifting tool outside the end plate, thereby reducing the space occupied by the lifting tool during battery assembly, making battery assembly more convenient, and helping to improve battery production efficiency.

[0024] 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 above and other purposes, 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

[0025] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0026] FIG1 is a schematic structural diagram of a vehicle provided in some embodiments of the present application;

[0027] FIG2 is a disassembled diagram of a battery provided in some embodiments of the present application;

[0028] FIG3 is an exploded view of a battery module provided in some embodiments of the present application;

[0029] FIG4 is a schematic structural diagram of an end plate of a battery module provided in some embodiments of the present application.

[0030] The figure numbers in the specific implementation manner are as follows: 1. end plate; 11. first end face; 12. second end face; 13. groove; 131. first trough body; 1311. second side face; 132. second trough body; 1321. first bottom face; 1322. first side face; 14. first positioning hole; 15. second positioning hole; 10. box body; 101. first box body; 102. second box body; 20. battery module; 201. battery cell; 1000. vehicle; 100. battery; 200. controller; 300. motor; X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0031] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0032] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the embodiments of the present application should have the common meanings understood by technicians in the field to which the embodiments of the present application belong.

[0033] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of 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. Therefore, they should not be understood as limiting the embodiments of the present application.

[0034] In addition, the technical terms "first," "second," etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. In the description of the embodiments of the present application, the meaning of "plurality" is more than two, unless otherwise specifically defined.

[0035] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0036] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0037] At present, judging from the development of the market situation, the application of batteries is becoming more and more extensive. Batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but are also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as in military equipment and aerospace and other fields. The battery mentioned in the embodiments of this application includes one or more battery modules. A battery module refers to a single physical module that includes one or more battery cells to provide higher voltage and capacity.

[0038] The battery cell may be a secondary battery cell. A secondary battery cell refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.

[0039] The battery cells can be lithium-ion battery cells, sodium-ion battery cells, sodium-lithium-ion battery cells, lithium metal battery cells, sodium metal battery cells, lithium-sulfur battery cells, magnesium-ion battery cells, nickel-hydrogen battery cells, nickel-cadmium battery cells, lead-acid battery cells, etc.

[0040] As the use of batteries in various industries continues to expand, the market demand for batteries is also increasing. How to make battery production more convenient and improve battery production efficiency has attracted more and more attention from those skilled in the art.

[0041] In order to improve the convenience of battery production, an embodiment of the present application provides an end plate of a battery module, which is provided with a first end face and a second end face arranged opposite to each other along a first direction, the first end face is configured to face away from the battery cell of the battery, and the second end face is configured to face the battery cell; the end plate is provided with a groove recessed in the first end face, the second groove body in the groove is located on one side of the first groove body along the second direction and the size of the second groove body along the third direction is larger than the size of the first groove body along the third direction, so that the groove is L-shaped, and an external lifting tool such as a hook can enter the second groove body through the first groove body to lift the end plate, and can also disengage from the end plate through the first groove body, reducing the space occupied by the lifting tool outside the end plate, thereby reducing the space occupied by the lifting tool during battery assembly, making battery assembly more convenient, and helping to improve battery production efficiency.

[0042] The end plates described in the embodiments of this application are suitable for battery modules, batteries, and electrical devices using these batteries. These end plates can be used to control the expansion of battery cells within a battery and also provide mounting points for other components such as wiring harnesses. These end plates can be used, but are not limited to, batteries. They can also be used to limit position or provide mounting points in products such as vehicles, aircraft, ships, electronic equipment, and power tools.

[0043] Electrical devices may include vehicles, mobile phones, portable devices, laptop computers, ships, spacecraft, electric toys, and electric tools, etc. Vehicles may include fuel vehicles, gas vehicles, or new energy vehicles. New energy vehicles may include pure electric vehicles, hybrid vehicles, or extended-range vehicles, etc. Spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc. Electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools, and railway electric tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc. The embodiments of the present application do not impose any special restrictions on the above-mentioned electrical devices.

[0044] For the convenience of description, the following embodiments are described by taking a vehicle 1000 as an example of an electrical device according to an embodiment of the present application.

[0045] Please refer to Figure 1, which is a schematic structural diagram of a vehicle 1000 provided in some embodiments of the present application. The vehicle 1000 can be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 100 is provided inside the vehicle 1000, and the battery 100 can be provided at the bottom, head or tail of the vehicle 1000. The battery 100 can be used to power the vehicle 1000. For example, the battery 100 can serve as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery 100 to power the motor 300, for example, for starting, navigating and driving the vehicle 1000.

[0046] In some embodiments of the present application, the battery 100 can serve not only as an operating power source for the vehicle 1000, but also as a driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0047] Please refer to Figure 2, which is an exploded view of the battery 100 provided in some embodiments of the present application. The battery 100 includes a case 10 and a battery module 20, and the battery module 20 is accommodated in the case 10. The case 10 is used to provide a storage space for the battery module 20. There may be multiple battery modules 20 in the battery 100, and the multiple battery modules 20 can be connected in series, in parallel, or in mixed connection. Mixed connection means that the multiple battery modules 20 are both connected in series and in parallel. As shown in Figure 3, the battery module 20 may include multiple battery cells 201 that can be connected in series, in parallel, or in mixed connection. Mixed connection means that the multiple battery cells 201 are both connected in series and in parallel. The multiple battery cells 201 are stacked between two end plates 1. The two end plates 1 can clamp the multiple battery cells 201 to control the expansion of the battery cells 201.

[0048] The housing 10 may include a first housing 101 and a second housing 102. The first housing 101 and the second housing 102 cover each other to define a storage space for accommodating the battery cells 201. The first housing 101 and the second housing 102 may be of various shapes, such as a rectangular parallelepiped, a cylinder, etc. The first housing 101 may be a hollow structure with one side open, and the second housing 102 may also be a hollow structure with one side open. The open side of the second housing 102 covers the open side of the first housing 101, thereby forming the housing 10 with a storage space.

[0049] The battery 100 may further include other structures. For example, the battery 100 may further include a busbar component for achieving electrical connection between the plurality of battery cells 201 .

[0050] Each battery cell 201 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 thereto. The battery cell 201 can be cylindrical, flat, rectangular, or in other shapes.

[0051] Some embodiments of the present application provide an end plate 1 of a battery module 20, as shown in Figure 4, the end plate 1 is provided with a first end face 11 and a second end face 12 arranged opposite to each other along a first direction X, the first end face 11 is configured to face away from the battery cell 201 of the battery 100, and the second end face 12 is configured to face the battery cell 201; the end plate 1 is provided with a groove 13 recessed in the first end face 11, the groove 13 includes a first groove body 131 and a second groove body 132 connected to each other, the second groove body 132 is located on one side of the first groove body 131 along the second direction Y, the dimension of the second groove body 132 along the third direction Z is greater than the dimension of the first groove body 131 along the third direction Z, and the first direction X, the second direction Y and the third direction Z are perpendicular to each other.

[0052] The first end surface 11 and the second end surface 12 may be two spaced-apart walls on the end plate 1, spaced apart along a first direction X, where the first direction X may be the thickness direction of the end plate 1. The first end surface 11 may be configured as the wall of the end plate 1 facing away from the battery cell 201 in the battery 100, and the second end surface 12 may be configured as the wall of the end plate 1 facing the battery cell 201. For example, the first end surface 11 and the second end surface 12 may be configured as parallel and spaced apart to ensure a uniform thickness of the end plate 1.

[0053] The groove 13 may be a groove-shaped structure provided on the end plate 1, which may be used to accommodate a lifting tool such as a hook, so that the lifting tool such as a hook can lift the battery module 20 by lifting the end plate 1. The groove 13 is formed by being recessed in the first end face 11, so that an external lifting tool such as a hook can enter the groove 13 from the side of the end plate 1 facing away from the battery cell 201 (the outside of the battery module 20), so that the lifting tool such as a hook is connected to the end plate 1. Exemplarily, the groove 13 may be made along with the end plate 1 using an integral molding method such as casting, so that the end plate 1 can be manufactured synchronously as a whole, which not only facilitates the processing and manufacturing of the end plate 1, but also makes the overall structure of the end plate 1 have good strength; the groove 13 may also be made by machining the end plate 1 using a machining method such as milling, so that the end plate 1 has lower processing difficulty and processing cost.

[0054] The first groove 131 and the second groove 132 are respectively part of the structure of the groove 13, and the two are interconnected to form the groove 13. The second groove 132 is provided on one side of the first groove 131 along the second direction Y, so that a lifting tool such as a hook can move from the first groove 131 along the second direction Y into the second groove 132, so that the lifting tool such as the hook can be easily connected to the end plate 1.

[0055] The size of the second trough body 132 along the third direction Z is greater than the size of the first trough body 131 along the third direction Z. It can be that the length of the second trough body 132 in the third direction Z is greater than the length of the first trough body 131 in the third direction Z, which makes the groove 13 as a whole L-shaped, so that after the hook and other lifting tools move from the first trough body 131 into the second trough body 132, they can be restricted by the wall to the part of the second trough body 132 protruding from the first trough body 131, so that the hook and other lifting tools can lift the end plate 1 and the battery module 20 in which it is located.

[0056] The first direction X, the second direction Y, and the third direction Z are arranged to be perpendicular to each other, so as to facilitate the arrangement of the structure in the end plate 1 .

[0057] In the above structure, the second groove body 132 in the groove 13 is located on one side of the first groove body 131 along the second direction Y and the size of the second groove body 132 along the third direction Z is larger than the size of the first groove body 131 along the third direction Z, so that the groove 13 is L-shaped, and external lifting tools such as hooks can enter the second groove body 132 through the first groove body 131 to lift the end plate 1, and can also be disengaged from the end plate 1 through the first groove body 131, reducing the space occupied by the lifting tool outside the end plate 1, thereby reducing the space occupied by the lifting tool during assembly of the battery 100, making the assembly of the battery 100 more convenient, and helping to improve the production efficiency of the battery 100.

[0058] In some embodiments, the first slot 131 extends to the edge of the end plate 1 along the second direction Y and forms an opening.

[0059] By extending the first groove body 131 to the edge of the end plate 1 along the second direction Y, the first groove body 131 is connected to the outside of the end plate 1 through the opening along the second direction Y, so that a lifting tool such as a hook can enter the groove 13 from the outside by moving along the second direction Y, making it convenient to connect a lifting tool such as a hook to the end plate 1.

[0060] In some embodiments, the opening may be provided with a chamfer, which has a guiding function so that a lifting tool such as a hook can easily enter the groove 13 from the opening.

[0061] In some embodiments, in the second direction Y, the second groove body 132 is spaced apart from the edge of the end plate 1 , and a limiting structure is formed between the second groove body 132 and the edge of the end plate 1 .

[0062] The limiting structure can be provided on the end plate 1 and is used to limit the position of a lifting device such as a hook. The second slot 132 is spaced apart from the edge of the end plate 1 in the second direction Y. The limiting structure is formed between the second slot 132 and the edge of the end plate 1. The limiting structure can limit the position of a lifting device such as a hook entering the second slot 132, reducing the movement of the lifting device such as a hook in the second slot 132 in the second direction Y and improving the stability of the connection between the lifting device such as the hook and the end plate 1.

[0063] In some embodiments, the groove surface of the second groove body 132 includes a first bottom surface 1321 and two first side surfaces 1322, the first bottom surface 1321 faces the first groove body 131 along the second direction Y, and the two first side surfaces 1322 are arranged at intervals along the third direction Z and connected to both ends of the first bottom surface 1321.

[0064] The first bottom surface 1321 and the first side surface 1322 can both be inner wall surfaces of the second trough body 132. Specifically, the first bottom surface 1321 can be the inner wall surface of the second trough body 132 that faces the first trough body 131 in the second direction Y, and the two first side surfaces 1322 can be the inner wall surfaces of the first trough body 131 that are spaced apart in the third direction Z and connected to both ends of the first bottom surface 1321. By arranging the first bottom surface 1321 toward the first trough body 131 in the second direction Y, the positioning and arrangement between the first trough body 131 and the second trough body 132 are facilitated.

[0065] In some embodiments, a second side surface 1311 is provided at one end of the first groove body 131 along the third direction Z, and the first side surface 1322 and the second side surface 1311 are coplanar.

[0066] The second side surface 1311 may be an inner wall surface of the first groove body 131 at one end in the third direction Z. By arranging the second side surface 1311 and the first side surface 1322 coplanarly, the inner wall surfaces of the first groove body 131 and the second groove body 132 at one end in the third direction Z are coplanar, thereby connecting the first groove body 131 to the end of the second groove body 132 in the third direction Z, and forming the groove 13 formed by the first groove body 131 and the second groove body 132 into an L-shape.

[0067] In some embodiments, the end plate 1 is provided with a first positioning hole 14 , and the first positioning hole 14 is communicated with the groove 13 .

[0068] The first positioning hole 14 can be a hole-shaped structure provided on the end plate 1, which is used to position a lifting tool such as a hook with the end plate 1. The first positioning hole 14 can be used to penetrate a connecting piece such as a positioning pin or a connecting bolt. By connecting the first positioning hole 14 with the groove 13, the connecting piece passing through the first positioning hole 14 can be connected to the lifting tool located in the groove 13, thereby achieving relative positioning between the lifting tool and the end plate 1, which is conducive to improving the stability of the lifting tool when lifting the end plate 1.

[0069] In some embodiments, the first positioning hole 14 is connected to the second slot 132 and extends along the third direction Z.

[0070] By connecting the first positioning hole 14 to the second trough body 132 and extending along the third direction Z, the connecting piece outside the end plate 1 can be inserted into the second trough body 132 along the third direction Z through the first positioning hole 14, so that the connecting piece can be conveniently connected to the sling located in the second trough body 132.

[0071] In some embodiments, the end plate 1 is provided with a second positioning hole 15 , which is disposed on the inner wall of the groove 13 and corresponds to the first positioning hole 14 .

[0072] The second positioning hole 15 can be a hole-like structure provided on the end plate 1, which is used to position a sling such as a hook with the end plate 1. The second positioning hole 15 can be used to penetrate a connecting member such as a positioning pin and a connecting bolt. By providing the second positioning hole 15 on the inner wall of the groove 13 and directly opposite the first positioning hole 14, the connecting member can be connected to the sling through the first positioning hole 14 and then be penetrated into the second positioning hole 15, which is conducive to improving the connection stability between the sling and the end plate 1.

[0073] In some embodiments, the second positioning hole 15 is a blind hole.

[0074] By configuring the second positioning hole 15 as a blind hole, the machining effort of the second positioning hole 15 can be reduced, thereby simplifying the machining of the second positioning hole 15. For example, the first positioning hole 14 can be a blind hole, the connecting member can be a connecting bolt, and the second positioning hole 15 can be a threaded hole. The connecting member can sequentially pass through the first positioning hole 14 and the sling before being connected to the second positioning hole 15.

[0075] For example, the first positioning hole 14 and the second positioning hole 15 can be formed by machining the end plate 1 using a machining method such as drilling, so that the end plate 1 has lower machining difficulty and cost.

[0076] In some embodiments, the first positioning hole 14 and the second positioning hole 15 are respectively located on the two first side surfaces 1322 .

[0077] By respectively arranging the first positioning hole 14 and the second positioning hole 15 on the two first side surfaces 1322 , the first positioning hole 14 and the second positioning hole 15 are respectively connected to the two ends of the second trough body 132 , so that the sling located in the second trough body 132 can be connected by the connecting piece connected to the first positioning hole 14 and the second positioning hole 15 .

[0078] Some embodiments of the present application also provide a battery module 20, which includes multiple battery cells 201 and two end plates 1 of the battery module 20 provided by the above technical solution, the two end plates 1 are arranged at intervals along the first direction X, and the multiple battery cells 201 are stacked between the two end plates 1.

[0079] In some embodiments, the two end plates 1 may be connected by a connector such as a steel band. By stacking multiple battery cells 201 between two end plates 1 spaced apart along the first direction X, the two end plates 1 can clamp the multiple battery cells 201 to control the expansion of the battery cells 201.

[0080] Since the battery module 20 includes the end plate 1 provided by the above technical solution, external lifting tools such as hooks occupy less space outside the end plate 1 when lifting the battery module 20, thereby reducing the space occupied by the battery 100 during assembly, making the assembly of the battery 100 more convenient and helping to improve the production efficiency of the battery 100.

[0081] Some embodiments of the present application further provide a battery 100 , which includes a housing 10 and a battery module 20 provided by the above technical solution. The battery module 20 is disposed in the accommodation space of the housing 10 .

[0082] Some embodiments of the present application further provide an electrical device, which includes the battery 100 provided by the above technical solution, and the battery 100 is used to provide electrical energy.

[0083] According to some embodiments of the present application, an end plate 1 for a battery module 20 is provided. As shown in FIG4 , the end plate 1 of the battery module 20 has a first end surface 11 and a second end surface 12 arranged opposite each other along a first direction X. The first end surface 11 faces away from the battery cell 201 of the battery 100, while the second end surface 12 faces the battery cell 201. A groove 13 is provided on the first end surface 11. Along a second direction Y, a second groove 132 in the groove 13 communicates with one side of the first groove 131. The second groove 132 is spaced from the edge of the end plate 1, and the first groove 131 extends to the edge of the end plate 1 to form an opening. The two first side surfaces 1322 of the second groove 132 are arranged at opposite ends of a first bottom surface 1321 in a third direction Z. The first bottom surface 1321 faces the first groove 131. The second side surface 1311, located at the end of the first groove 131 in the third direction Z, is coplanar with the first side surface 1322, resulting in an L-shaped groove 13 formed by the first and second grooves 131 and 132. The first positioning hole 14 and the second positioning hole 15 on the end plate 1 are respectively located on the two first side surfaces 1322 and are arranged opposite each other, so that the connecting piece can pass through the first positioning hole 14 and the sling in sequence and then be connected to the second positioning hole 15, so that the end plate 1 and the sling can be stably connected.

[0084] The connection and disconnection between the sling and the end plate 1 will be described below.

[0085] After the sling moves along the third direction Z to the plane where the second trough 132 is located, the sling can enter the groove 13 from the opening of the first trough 131 by rotating, and then move toward the second trough 132 along the second direction Y. After the sling enters the second trough 132, the sling moves along the third direction Z into the portion of the second trough 132 that protrudes relative to the first trough 131. The connector passes through the first positioning hole 14 and the sling in sequence and is connected to the second positioning hole 15. The sling can then lift the end plate 1. After the lifting is completed, the connector is pulled out from the second positioning hole 15, the sling, and the first positioning hole 14. The sling moves along the third direction Z into the first trough 131. The sling can be detached from the groove 13 from the first trough 131 by rotating. As can be seen from the above scheme, the end plate 1 can reduce the space occupied by the outside world when the battery 100 is assembled. The sling makes the assembly of the battery 100 more convenient, which is conducive to improving the production efficiency of the battery 100.

[0086] 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 make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions 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. An end plate of a battery module, the end plate comprising a first end surface and a second end surface arranged opposite to each other along a first direction, the first end surface being configured to face away from a battery cell of a battery, and the second end surface being configured to face the battery cell; The end plate is provided with a groove recessed in the first end surface, and the groove includes a first groove body and a second groove body that are connected, the second groove body is located on one side of the first groove body along the second direction, the size of the second groove body along the third direction is larger than the size of the first groove body along the third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

2. The end plate of the battery module according to claim 1, wherein: The first slot body extends to the edge of the end plate along the second direction and forms an opening.

3. The end plate of the battery module according to claim 1 or 2, wherein: In the second direction, the second slot body is spaced apart from the edge of the end plate, and a limiting structure is formed between the second slot body and the edge of the end plate.

4. The end plate of the battery module according to any one of claims 1 to 3, wherein: The groove surface of the second groove body includes a first bottom surface and two first side surfaces, the first bottom surface faces the first groove body along the second direction, and the two first side surfaces are spaced apart along the third direction and connected to two ends of the first bottom surface.

5. The end plate of the battery module according to claim 4, wherein: A second side surface is disposed at one end of the first slot body along the third direction, and the first side surface and the second side surface are coplanar.

6. The end plate of the battery module according to claim 4 or 5, wherein: The end plate is provided with a first positioning hole, and the first positioning hole is communicated with the groove.

7. The end plate of the battery module according to claim 6, wherein: The first positioning hole is communicated with the second slot body and extends along the third direction.

8. The end plate of the battery module according to claim 6 or 7, wherein: The end plate is provided with a second positioning hole, which is arranged on the inner wall of the groove and corresponds to the first positioning hole.

9. The end plate of the battery module according to claim 8, wherein: The second positioning hole is a blind hole.

10. The end plate of the battery module according to claim 8 or 9, wherein: The first positioning hole and the second positioning hole are respectively located on the two first side surfaces.

11. A battery module, comprising: Two end plates of the battery module according to any one of claims 1 to 10, the two end plates being spaced apart along the first direction; A plurality of battery cells are stacked between the two end plates.

12. A battery comprising: The battery module as claimed in claim 11; The battery module is arranged in the accommodating space of the box.

13. An electrical device comprising the battery as claimed in claim 12, wherein the battery is used to provide electrical energy.

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