Case, battery and electric device

Abstract

Disclosed in the present application are a case, a battery and an electric device. The case comprises a heat exchange assembly, electrical connection assemblies and sealing assemblies. The heat exchange assembly comprises a first heat exchange plate and a second heat exchange plate, which are arranged in a stacked manner, wherein a heat exchange flow channel is provided between the first heat exchange plate and the second heat exchange plate, and the heat exchange flow channel is configured to exchange heat with battery cells. The electrical connection assemblies are connected to the heat exchange assembly, and are configured to be electrically connected to the battery cells. The sealing assemblies are arranged in the circumferential direction of each electrical connection assembly, and penetrate in the direction of the thickness of the heat exchange assembly and are connected to the first heat exchange plate and the second heat exchange plate. The sealing assemblies are arranged around the electrical connection assemblies, such that the connection strength of the heat exchange assembly near the electrical connection assemblies can be improved, the sealing performance of the heat exchange assembly is improved, and thus the operational stability of the battery is improved.

Description

Box, battery and electrical device

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application No. 202420433320.5, filed on March 6, 2024, entitled “Box, 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 batteries, and in particular to a box, a battery, and an electrical device. Background Art

[0004] Battery cells are widely used in electronic devices such as mobile phones, laptops, electric bicycles, electric cars, electric airplanes, electric boats, electric toy cars, electric toy boats, electric toy airplanes, power tools, and energy storage systems. Battery cells can include nickel-cadmium battery cells, nickel-metal hydride battery cells, lithium-ion battery cells, sodium-ion battery cells, and secondary alkaline zinc-manganese battery cells.

[0005] With the development of new energy technologies, how to improve the sealing performance of battery boxes and improve the operating stability of batteries is also one of the research issues in this field.

[0006] Summary of the Invention

[0007] In view of the above problems, the present application provides a box, a battery and an electrical device, which can improve the sealing performance of the box and improve the stability of battery operation.

[0008] In a first aspect, the present application provides a housing comprising a heat exchange assembly, an electrical connection assembly, and a sealing assembly. The heat exchange assembly comprises a first heat exchange plate and a second heat exchange plate arranged in a stacked manner, with a heat exchange channel disposed between the first and second heat exchange plates, the heat exchange channel being used to exchange heat for battery cells. The electrical connection assembly is connected to the heat exchange assembly and is used to electrically connect to the battery cells. The sealing assembly is arranged circumferentially of the electrical connection assembly, and the seal extends through the thickness of the heat exchange assembly and connects the first and second heat exchange plates.

[0009] In the technical solution of the embodiment of the present application, a heat exchange component is provided to exchange heat with the battery cell, thereby improving the heat exchange efficiency of the battery cell and improving the stability of its operation. The electrical connection component is used to transmit the electrical energy of the battery cell. A sealing component is provided around the electrical connection component, which can improve the connection strength of the heat exchange component near the electrical connection component and improve the sealing performance of the heat exchange component, thereby improving the stability of the battery operation.

[0010] In some embodiments, the sealing assembly includes a plurality of sealing pins spaced apart circumferentially along the electrical connection assembly. In the above technical solution, by providing a plurality of sealing pins to connect the first heat exchange plate and the second heat exchange plate, the connection strength of the heat exchange assembly around the electrical connection assembly is improved, the sealing performance thereof is improved, the impact of the electrical connection assembly on the sealing performance of the heat exchange assembly is reduced, and the structural stability of the heat exchange assembly is improved.

[0011] In some embodiments, the sealing nail includes a nail cap and multiple nail claws. The nail cap is located on the side of the heat exchange assembly facing away from the battery cells. The multiple nail claws are spaced apart circumferentially around the nail cap. The nail claws penetrate the heat exchange assembly along the thickness direction to connect the first heat exchange plate and the second heat exchange plate. The nail claws and the nail cap are integrally formed. In the above technical solution, the multiple nail claws are provided to connect the first heat exchange plate and the second heat exchange plate, thereby improving the connection strength between the first heat exchange plate and the second heat exchange plate. This improves the sealing performance of the heat exchange assembly.

[0012] In some embodiments, the housing further comprises a support plate, which is disposed on a side of the heat exchange assembly facing away from the battery cells. The sealing assembly extends through the support plate along its thickness and connects the support plate to the heat exchange assembly. In the above structure, the provision of the support plate enhances the housing's support strength for the battery cells, improving the operational stability of the battery cells. Furthermore, the sealing assembly connects the support plate and the heat exchange assembly, enhancing the strength of the connection between the support plate and the heat exchange assembly and the stability of the overall housing structure.

[0013] In some embodiments, the sealing assembly further includes a sealing layer disposed between the heat exchange assembly and the support plate. The provision of the sealing layer further improves the sealing performance between the support plate and the heat exchange assembly.

[0014] In some embodiments, the housing further comprises a frame and a first connector. The support plate and the heat exchange assembly are connected to the frame, and the frame and the heat exchange assembly together enclose a cavity for accommodating battery cells. The first connector connects the frame and the heat exchange plate. The sealing assembly is disposed between the electrical connection assembly and the first connector. In the above structure, by providing the first connector, the overall structural strength of the housing is improved by connecting the frame and the housing, and the sealing assembly is disposed between the electrical connection assembly and the first connector, thereby improving the sealing performance between the electrical connection assembly and the heat exchange assembly.

[0015] In some embodiments, the housing further includes a second connector for connecting the heat exchange assembly and the support plate, and the sealing assembly is disposed between the electrical connection assembly and the second connector. The provision of the second connector improves the sealing performance between the electrical connection assembly and the support plate.

[0016] In some embodiments, the electrical connection assembly includes at least one of a connector and an output pole base. By providing the electrical connection assembly, the electrical energy of the battery cell can be conducted.

[0017] In a second aspect, the present application provides a battery, which includes the box body and battery cells in the above embodiment, and the battery cells are arranged in the box body.

[0018] In a third aspect, the present application provides an electrical device, which includes the battery in the above embodiment, and the battery is used to provide electrical energy.

[0019] 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

[0020] The features, advantages and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

[0021] FIG1 is a schematic structural diagram of a vehicle according to an embodiment of the present application;

[0022] FIG2 is a schematic diagram of the exploded structure of a battery according to an embodiment of the present application;

[0023] FIG3 is a schematic structural diagram of a battery cell according to an embodiment of the present application;

[0024] FIG4 is a schematic diagram of a partial structure of a box according to an embodiment of the present application;

[0025] FIG5 is an enlarged structural diagram of the circle A in FIG4 ;

[0026] FIG6 is a schematic structural diagram of section BB in FIG4 ;

[0027] FIG. 7 is an enlarged structural diagram of the circle C in FIG. 6 .

[0028] Detailed description of the accompanying drawings: 1. vehicle; 2. battery; 10. electrode assembly; 20. shell; 30. end cover; 40. outer shell; 3. controller; 4. motor; 5. box; 51. first part; 52. second part; 53. accommodating space; 54. support plate; 55. frame; 56. first connecting member; 57. second connecting member; 6. heat exchange assembly; 601. first heat exchange plate; 602. second heat exchange plate; 603. heat exchange flow channel; 7. battery cell; 8. electrical connection assembly; 801. connector; 802. output pole base; 9. sealing assembly; 901. sealing nail; 902. nail cap; 903. nail claw. DETAILED DESCRIPTION

[0029] 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.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0031] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0032] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0033] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0034] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0035] 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., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and 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, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0036] 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; 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.

[0037] Please refer to Figure 1, which is a schematic structural diagram of a vehicle provided in one embodiment of the present application. Vehicle 1 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 2 is provided inside the vehicle 1, and the battery 2 can be provided at the bottom, head or tail of the vehicle 1. The battery 2 can be used to power the vehicle 1. For example, the battery 2 can serve as an operating power source for the vehicle 1. The vehicle 1 can also include a controller 3 and a motor 4. The controller 3 is used to control the battery 2 to power the motor 4, for example, for starting, navigating and operating power requirements of the vehicle 1 during driving.

[0038] In some embodiments of the present application, the battery 2 can serve not only as an operating power source for the vehicle 1 , but also as a driving power source for the vehicle 1 , replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1 .

[0039] In some embodiments, the battery may be an energy storage device, including an energy storage container, an energy storage cabinet, and the like.

[0040] Please refer to Figure 2, which is an exploded view of a battery provided in one embodiment of the present application. Battery 2 includes a housing 5 and a battery cell 7, which is housed within housing 5. Housing 5 provides a housing space 53 for battery cell 7 and can be constructed in a variety of ways.

[0041] In some optional embodiments, the housing 5 includes a first portion 51 and a second portion 52, which cover each other and together define a storage space 53 for accommodating the battery cells 7. The second portion 52 may be a hollow structure with one end open, and the first portion 51 may be a plate-like structure, with the first portion 51 covering the open side of the second portion 52, so that the first portion 51 and the second portion 52 together define the storage space 53. The first portion 51 and the second portion 52 may also be hollow structures with one end open, with the open side of the first portion 51 covering the open side of the second portion 52. Of course, the housing 5 formed by the first portion 51 and the second portion 52 can have various shapes, such as a cylinder, a rectangular parallelepiped, etc.

[0042] In some embodiments, the box 5 can serve as part of the chassis structure of the vehicle 1. For example, part of the box 5 can become at least part of the floor of the vehicle 1, or part of the box 5 can become at least part of the crossbeam and longitudinal beam of the vehicle 1.

[0043] In some embodiments, the first portion 51 or the second portion 52 may include a frame and a cover plate, and the frame includes a plurality of beam structures.

[0044] In battery 2, there may be multiple battery cells 7, which may be connected in series, in parallel, or in a hybrid configuration. A hybrid configuration refers to a combination of series and parallel connections within the battery cells 7. Multiple battery cells 7 may be directly connected in series, in parallel, or in a hybrid configuration, and then the entire battery cell 7 is housed within the housing 5. Alternatively, battery 2 may be constructed by first connecting multiple battery cells 7 in series, in parallel, or in a hybrid configuration to form a battery module. The multiple battery modules are then connected in series, in parallel, or in a hybrid configuration to form a single unit, which is then housed within the housing 5. Battery 2 may also include other structures, such as a busbar assembly for electrically connecting the multiple battery cells 7.

[0045] Each battery cell 7 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 7 can be cylindrical, flat, rectangular, or in other shapes.

[0046] Please refer to Figure 3, which is a schematic diagram of the structure of a battery cell 7 provided in one embodiment of the present application. A battery cell 7 is the smallest unit that makes up a battery 2. As shown in Figure 3, a battery cell 7 includes a housing 40, an electrode assembly 10, and other functional components.

[0047] The housing 40 may include an end cap 30 and a shell 20. The end cap 30 is a component that covers the opening of the shell 20 to isolate the internal environment of the battery cell 7 from the external environment.

[0048] The electrode assembly 10 is a component in the battery cell 7 where electrochemical reactions occur. One or more electrode assemblies 10 may be contained in the housing 20. The electrode assembly 10 includes a positive electrode sheet, a negative electrode sheet, and a separator. During the charge and discharge process of the battery cell 7, active ions (such as lithium ions) are embedded and extracted back and forth between the positive electrode sheet and the negative electrode sheet. The separator is arranged between the positive electrode sheet and the negative electrode sheet, which can prevent the positive and negative electrodes from short-circuiting and allow active ions to pass through. In some embodiments, the battery cell 7 also includes an electrolyte, which plays a role in conducting ions between the positive and negative electrodes. This application does not have any specific restrictions on the type of electrolyte, and it can be selected according to needs. The electrolyte can be liquid, gel or solid.

[0049] In some embodiments, the electrode assembly 10 is a wound structure. Alternatively, the electrode assembly 10 is a laminated structure.

[0050] Some functional components also need to be provided in the battery, such as a connector, which is usually composed of two or more metal plugs that can be inserted into or connected to the positive and negative poles of the battery cell to transfer electrical energy in the circuit. The function of the battery connector is to stably and reliably connect the battery for use in electronic devices. The battery connector usually has a pluggable design, which can be easily inserted and removed from the battery without causing damage to the battery. There are also some functional components, such as the output pole base, which is used to install the output pole of the battery. The output pole is electrically connected to the positive pole of the battery cell to transmit the electrical energy of the battery cell to the outside. The above-mentioned functional components are usually provided on the battery casing. Specifically, in order to improve the strength and connection stability of the connection between the above-mentioned functional components and the casing, part of the functional components can be inserted into the support plate or heat exchange assembly of the casing. However, the sealing of the position where the above-mentioned components are connected to the heat exchange assembly is reduced, which increases the risk of leakage of the heat exchange assembly.

[0051] To address the aforementioned issues, the present application provides a housing in which a heat exchange assembly is provided to exchange heat between battery cells, thereby improving the heat exchange efficiency of the battery cells and thereby enhancing their operational stability. An electrical connection assembly is provided to transmit electrical energy from the battery cells. Furthermore, a sealing assembly is provided around the electrical connection assembly to enhance the connection strength of the heat exchange assembly near the electrical connection assembly, improve the sealing performance of the heat exchange assembly, and thereby enhance the operational stability of the battery.

[0052] The following is a detailed description of the housing of an embodiment of the present application with reference to the accompanying drawings. Please refer to Figures 4 to 7 . Figure 4 is a partial structural diagram of the housing of an embodiment of the present application, Figure 5 is an enlarged structural diagram of circle A in Figure 4 , Figure 6 is a structural diagram of section BB in Figure 4 , and Figure 7 is an enlarged structural diagram of circle C in Figure 6 .

[0053] As shown in the figure, the housing 5 of the embodiment of the present application includes a heat exchange assembly 6, an electrical connection assembly 8, and a sealing assembly 9. The heat exchange assembly 6 includes a first heat exchange plate 601 and a second heat exchange plate 602 arranged in a stacked manner. A heat exchange channel 603 is provided between the first heat exchange plate 601 and the second heat exchange plate 602. The heat exchange channel 603 is used to exchange heat with the battery cell 7. The electrical connection assembly 8 is connected to the heat exchange assembly 6 and is used to electrically connect to the battery cell 7. The sealing assembly 9 is arranged along the circumference of the electrical connection assembly 8. The seal passes through the thickness of the heat exchange assembly 6 and connects the first heat exchange plate 601 and the second heat exchange plate 602.

[0054] Optionally, the heat exchange channel 603 can be a concave groove formed by stamping a metal plate on the first heat exchange plate 601 or the second heat exchange plate 602, and a closed channel is formed by stacking and bonding the two. Therefore, good sealing performance needs to be formed between the first heat exchange plate 601 and the second heat exchange plate 602 to reduce the risk of leakage of the heat exchange medium in the heat exchange channel 603. The sealing component 9 can connect the first heat exchange plate 601 and the second heat exchange plate 602 using a combination of self-piercing riveting and sealant. Self-piercing riveting (SPR) is a cold connection process that uses rivets to penetrate two or more layers of plates of different materials for connection. This process uses components such as a hammer, a pressure ring, a die and a rivet to penetrate the rivet into the plate, so that the rivet forms a firm mechanical interlocking structure with the first heat exchange plate 601 and the second heat exchange plate 602.

[0055] In the technical solution of the embodiment of the present application, a heat exchange component 6 is provided to exchange heat with the battery cell 7, thereby improving the heat exchange efficiency of the battery cell 7 and improving its operating stability. The connector 801 is used to transmit the electrical energy of the battery cell 7. A sealing component 9 is provided around the electrical connection component 8, which can improve the connection strength of the heat exchange component 6 near the electrical connection component 8 and improve the sealing performance of the heat exchange component 6, thereby improving the operating stability of the battery 2.

[0056] In some embodiments of the present application, the sealing assembly 9 includes a plurality of sealing pins 901 spaced apart along the circumference of the electrical connection assembly 8. In the above technical solution, by providing a plurality of sealing pins 901 to connect the first heat exchange plate 601 and the second heat exchange plate 602, the connection strength of the heat exchange assembly 6 around the electrical connection assembly 8 is improved, the impact of the electrical connection assembly 8 on the sealing performance of the heat exchange assembly 6 is reduced, and the structural stability of the heat exchange assembly 6 is improved.

[0057] As shown in FIG7 , in some embodiments of the present application, the sealing nail 901 includes a nail cap 902 and a plurality of nail claws 903. The nail cap 902 is provided on the side of the heat exchange assembly 6 away from the battery cell 7. The plurality of nail claws 903 are arranged at intervals along the circumference of the nail cap 902. The nail claws 903 penetrate the heat exchange assembly 6 along the thickness direction of the heat exchange assembly 6 to connect the first heat exchange plate 601 and the second heat exchange plate 602. The nail claws 903 and the nail cap 902 are an integrally formed structure. In the above technical solution, a plurality of nail claws 903 are provided to connect the first heat exchange plate 601 and the second heat exchange plate 602, thereby improving the connection strength between the first heat exchange plate 601 and the second heat exchange plate 602. The sealing performance of the heat exchange assembly 6 is improved. In addition, the integrally formed structure improves the manufacturing efficiency of the sealing nail 901, thereby improving the production efficiency of the battery 2.

[0058] As shown in FIG6 , in some embodiments of the present application, the housing 5 further includes a support plate 54, which is disposed on the side of the heat exchange assembly 6 facing away from the battery cells 7. The sealing assembly 9 extends through the support plate 54 along its thickness and connects the support plate 54 to the heat exchange assembly 6. In the above structure, the provision of the support plate 54 improves the support strength of the housing 5 for the battery cells 7, thereby improving the operational stability of the battery cells 7. The sealing assembly 9 connects the support plate 54 and the heat exchange assembly 6, thereby improving the strength of the connection between the support plate 54 and the heat exchange assembly 6 and the stability of the overall structure of the housing 5.

[0059] In some embodiments of the present application, the sealing assembly 9 further includes a sealing layer disposed between the heat exchange assembly 6 and the support plate 54. Exemplarily, the sealing layer includes a sealant. The provision of the sealing layer further improves the sealing performance between the support plate 54 and the heat exchange assembly 6.

[0060] As shown in Figures 6 and 7, in some embodiments of the present application, the housing 5 further includes a frame 55 and a first connector 56. The support plate 54 and the heat exchange assembly 6 are connected to the frame 55, and the frame 55 and the heat exchange assembly 6 together form a receiving cavity for accommodating the battery cell 7. The first connector 56 connects the frame 55 and the heat exchange assembly 6. Among them, the sealing assembly 9 is arranged between the electrical connection assembly 8 and the first connector 56. In the above structure, by providing the first connector 56, the frame 55 and the housing 5 are connected to improve the overall structural strength of the housing 5, and the sealing assembly 9 is arranged between the electrical connection assembly 8 and the first connector 56, thereby improving the sealing performance between the electrical connection assembly 8 and the heat exchange assembly 6.

[0061] In some embodiments of the present application, the housing 5 further includes a second connector 57, which is used to connect the heat exchange assembly 6 and the support plate 54. The sealing assembly 9 is provided between the electrical connection assembly 8 and the second connector 57. The provision of the second connector 57 improves the sealing performance between the electrical connection assembly 8 and the support plate 54.

[0062] Optionally, the first connector 56 and the second connector 57 may utilize an FDS integral connection structure. FDS (Friction Drive Staking) integral connection is a commonly used joining process that utilizes rivets to connect two or more parts using the friction drive principle. This process is commonly used to connect sheet metal parts. This structure offers high assembly efficiency and stable structural strength.

[0063] As shown in Figure 4, in some embodiments of the present application, the electrical connection assembly 8 includes at least one of a connector 801 and an output pole base 802. By providing the electrical connection assembly 8, the electrical energy of the battery cell 7 can be conducted.

[0064] The embodiment of the present application provides a battery 2, which includes the housing 5 and the battery cell 7 in the above embodiment, and the battery cell 7 is arranged in the housing 5. The embodiment of the present application also provides an electrical device, which includes the battery 2 in the above embodiment, and the battery 2 is used to provide electrical energy. In the battery 2 and the electrical device, a heat exchange component 6 is provided to exchange heat with the battery cell 7 to improve the heat exchange efficiency of the battery cell 7 to improve its operating stability, and the electrical connection component 8 is used to transmit the electrical energy of the battery cell 7. In addition, a sealing component 9 is provided around the electrical connection component 8 to improve the connection strength of the heat exchange component 6 near the electrical connection component, improve the sealing performance of the heat exchange component 6, and thus improve the stability of the operation of the battery 2.

[0065] 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. A box (5), comprising: A heat exchange assembly (6) comprises a first heat exchange plate (601) and a second heat exchange plate (602) arranged in a stacked manner, wherein a heat exchange channel (603) is provided between the first heat exchange plate (601) and the second heat exchange plate (602), and the heat exchange channel (603) is used for exchanging heat with a battery cell (7); An electrical connection component (8) connected to the heat exchange component (6), the electrical connection component (8) being used to electrically connect to the battery cell (7); A sealing component (9) is arranged along the circumference of the electrical connection component (8), and the sealing component (9) penetrates and connects the first heat exchange plate (601) and the second heat exchange plate (602) along the thickness direction of the heat exchange component (6).

2. The box (5) according to claim 1, wherein The sealing assembly (9) comprises a plurality of sealing pins (901) arranged at intervals along the circumference of the electrical connection assembly (8).

3. The box (5) according to claim 2, wherein: The sealing nail (901) comprises: A nail cap (902) is provided on a side of the heat exchange component (6) facing away from the battery cell (7); A plurality of nail claws (903) are arranged at intervals along the circumference of the nail cap (902); the nail claws (903) penetrate the heat exchange component (6) along the thickness direction of the heat exchange component (6) to connect the first heat exchange plate (601) and the second heat exchange plate (602); the nail claws (903) and the nail cap (902) are an integrally formed structure.

4. The box (5) according to any one of claims 1 to 3, wherein: The box body (5) further comprises a support plate (54), the support plate (54) being arranged on a side of the heat exchange assembly (6) facing away from the battery cell (7), and the sealing assembly (9) penetrating the support plate (54) along the thickness direction of the support plate (54) and connecting the support plate (54) and the heat exchange assembly (6).

5. The box (5) according to claim 4, wherein: The sealing assembly (9) further comprises a sealing layer, wherein the sealing layer is provided between the heat exchange assembly (6) and the support plate (54).

6. The box (5) according to claim 4, wherein: The box (5) also includes: The frame (55), the support plate (54) and the heat exchange assembly (6) are connected to the frame (55), the frame (55) and the heat exchange assembly (6) together enclose a receiving cavity for receiving the battery cell (7); A first connecting member (56) connects the frame (55) and the heat exchange assembly (6), Wherein, the sealing component (9) is arranged between the electrical connection component (8) and the first connecting member (56).

7. The box (5) according to claim 6, wherein: The box body (5) further includes a second connecting member (57), the second connecting member (57) being used to connect the heat exchange component (6) and the support plate (54), and the sealing component (9) being arranged between the electrical connection component (8) and the second connecting member (57).

8. The box (5) according to any one of claims 1 to 3, wherein: The electrical connection assembly (8) includes at least one of a connector (801) and an output pole base (802).

9. A battery (2), comprising: The box (5) according to any one of claims 1 to 8, and A battery cell (7), wherein the battery cell (7) is arranged in the box (5).

10. An electrical device comprising the battery (2) according to claim 9, wherein the battery (2) is used for providing electrical energy.

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