Box body, battery and electric device

Abstract

The utility model discloses a box body, a battery and an electric device. The box body comprises a first side plate and a pipeline connector assembly. The pipeline connector assembly is arranged on the first side plate and comprises a heat exchange connecting part and a medium connecting pipe which are connected with each other. A first flow channel is arranged in the heat exchange connecting part and communicates with the heat exchange connecting part, the heat exchange connecting part is used for being connected with a medium connector of the heat exchange assembly, and the medium connecting pipe is used for being connected with a medium supply source pipeline. And a through hole communicating with the first flow channel is formed in the heat exchange connecting part, and the medium connecting pipe communicates with the through hole. The through hole is formed in the heat exchange connecting part, the medium connecting pipe is communicated with the through hole, and the heat exchange connecting part is directly connected with the medium connecting pipe, so that parts for connecting the heat exchange connecting part and the medium connecting pipe are omitted, the number of parts in the box body is reduced, and the space occupied by the pipeline joint assembly is reduced; therefore, the energy density and the assembly efficiency of the battery are improved.

Description

Technical Field

[0001] The present application relates to the field of batteries, and in particular to a box, a battery and an electrical device. 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, electric tools, and energy storage systems, etc. Battery cells can include nickel-cadmium battery cells, nickel-hydrogen battery cells, lithium-ion battery cells, sodium-ion battery cells, and secondary alkaline zinc-manganese battery cells, etc.

[0003] Currently, technical research on batteries includes improving the energy density of batteries and improving the efficiency of batteries. How to reduce the number of components inside the battery case to improve the energy density of batteries is also one of the issues studied in this field. Utility Model Content

[0004] In view of the above problems, the present application provides a box, a battery and an electrical device, which can simplify the number of components in the battery box and improve the energy density and assembly efficiency of the battery.

[0005] In a first aspect, the present application provides a box body, comprising a first side plate and a pipe joint assembly. The pipe joint assembly is arranged on the first side plate, and the pipe joint assembly comprises a heat exchange connection part and a medium connection pipe connected to each other. A first flow channel is arranged in the heat exchange connection part, and the first flow channel is connected to the heat exchange connection part. The heat exchange connection part is used to connect the medium interface of the heat exchange assembly, and the medium connection pipe is used to connect the medium supply source pipeline. Among them, a through hole connected to the first flow channel is arranged on the heat exchange connection part, and the medium connection pipe is connected to the through hole.

[0006] In the technical solution of the embodiment of the present application, a heat exchange connection part is provided to be connected with a heat exchange component in the battery, so that a heat exchange medium is introduced into the heat exchange component, or the heat exchange medium in the heat exchange component is exported. A medium connecting pipe is provided to be connected with a source of heat exchange medium, so that the heat exchange medium in the source is output to the heat exchange component, or the medium in the heat exchange component is input to the medium source. Furthermore, a through hole is provided on the heat exchange connection part, and the heat exchange connection part is directly connected to the medium connecting pipe by connecting the medium connecting pipe to the through hole, thereby eliminating the components connecting the heat exchange connection part and the medium connecting pipe, reducing the number of components in the box, and reducing the space occupied by the pipe joint assembly, thereby improving the energy density and assembly efficiency of the battery.

[0007] In some embodiments, the heat exchange connection part and the medium connection pipe are an integrally formed structure. The above structure further improves the production efficiency of the pipe joint assembly and improves the connection strength between the heat exchange connection part and the medium connection pipe.

[0008] In some embodiments, the box body also includes a bottom plate and a plurality of second side plates. The first side plate, the plurality of second side plates and the bottom plate together enclose a storage space for accommodating battery cells, and a mounting hole is provided on the first side plate. The heat exchange connection part is provided in the storage space, and the medium connection pipe is provided in the mounting hole. In the above technical solution, the heat exchange connection part is provided in the storage space, which can reduce the distance between the heat exchange connection part and the heat exchange component and make full use of the space inside the box body; the heat exchange connection part is provided in the mounting hole, which improves the efficiency of the installation of the heat exchange component and the first side plate, and can facilitate the connection between the medium supply source and the heat exchange connection part, thereby improving the efficiency of the connection.

[0009] In some embodiments, the medium connecting pipe is arranged to intersect with the first flow channel. In the above structure, the medium connecting pipe and the first flow channel extend in different directions, which can fully utilize the space inside the box, reduce the volume occupied by the pipe joint assembly, and improve the energy density of the battery.

[0010] In some embodiments, the heat exchange connection part includes a mounting part and a connector. The mounting part is connected to the medium connection pipe, and a receiving groove is provided in the mounting part, and a through hole is provided in the mounting part and communicated with the receiving groove. The connector is provided in the receiving groove, and the connector is used to connect the medium interface, and the first flow channel is provided in the connector. Among them, a protruding first connection part is provided in the receiving groove, and a concave second connection part is provided on the outer periphery of the connector, and the second connection part cooperates with the first connection part to detachably connect the connector to the mounting part. In the above structure, by providing the mounting part, the connection strength between the heat exchange connection part and the medium connection pipe is improved. By providing the connector, the assembly convenience of the heat exchange connection part and the medium interface is improved, and the assembly efficiency is improved. In addition, the mounting part and the connector are detachably connected, which can facilitate subsequent maintenance and adaptation to different medium interfaces, thereby expanding the adaptability of the pipe joint assembly.

[0011] In some embodiments, a sealing assembly is further provided between the mounting portion and the connector. The above structure improves the sealing performance between the mounting portion and the connector, reduces the risk of leakage of the pipe joint assembly, and improves the stability of battery operation.

[0012] In some embodiments, the medium connecting pipe includes a pipe body and a clamp ring. One end of the pipe body is connected to the mounting portion. The clamp ring is provided at one end of the pipe body away from the mounting portion, and the clamp ring is formed by protruding outward from the outer circumference of the pipe body, and the clamp ring is used to clamp with the medium supply source pipeline. In the above structure, by providing the clamp ring, the hose of the medium pipeline is directly connected to the pipeline joint assembly, which reduces the intermediate connecting pipes or connecting components, improves the integration degree of the pipeline joint assembly, reduces the total weight of the box, and improves the energy density of the battery.

[0013] In some embodiments, the outer diameter of the hoop ring gradually increases along the direction of the tube body toward the mounting portion. By gradually increasing the diameter of the hoop ring, the pressure on the end of the medium supply hose gradually increases, thereby improving the sealing between the hose and the hoop ring.

[0014] In a second aspect, the present application provides a battery, which includes a battery cell and the box body in the above embodiment.

[0015] 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.

[0016] 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

[0017] The features, advantages and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

[0018] Figure 1 A schematic diagram of the structure of a vehicle according to an embodiment of the present application;

[0019] Figure 2 This is a schematic diagram of the exploded structure of a battery according to an embodiment of the present application;

[0020] Figure 3 This is a schematic diagram of the exploded structure of a battery cell according to an embodiment of the present application;

[0021] Figure 4 This is a schematic structural diagram of a first side plate of a box body according to an embodiment of the present application;

[0022] Figure 5 This is a schematic structural diagram of a pipe joint assembly according to an embodiment of the present application;

[0023] Figure 6 This is a schematic cross-sectional structure diagram of a pipe joint assembly according to an embodiment of the present application;

[0024] Figure 7 This is a schematic diagram of the exploded structure of a pipe joint assembly according to one embodiment of the present application;

[0025] Figure 8 This is a schematic diagram of the cross-sectional structure of a mounting portion according to an embodiment of the present application.

[0026] DETAILED DESCRIPTION OF REFERENCE NUMERALS

[0027] 1. Vehicle; 2. Battery; 10. Electrode assembly; 20. Shell; 24. Pressure relief mechanism; 25. Electrode terminal; 30. End cover assembly; 40. Shell; 3. Controller; 4. Motor; 5. Box; 51. First part; 52. Second part; 53. Accommodation space; 501. First side plate; 502. Second side plate; 503. Bottom plate; 504. Mounting hole; 6. Pipe joint assembly; 601. Heat exchange connection part; 602. Medium connection pipe; 603. First flow channel; 604. Through hole; 605. Mounting part; 606. Connector; 607. Accommodation groove; 608. First connection part; 609. Second connection part; 610. Sealing assembly; 611. Pipe body; 612. Hoop ring; 7. Battery cell. DETAILED DESCRIPTION

[0028] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field 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" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0030] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0031] Reference to "embodiments" herein 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 herein may be combined with other embodiments.

[0032] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0033] 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).

[0034] 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, which 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0035] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like 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 a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0036] Please refer to Figure 1 , Figure 1 A schematic diagram of the structure of a vehicle provided for one embodiment of the present application. Vehicle 1 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may 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 may be provided at the bottom, head or tail of the vehicle 1. The battery 2 may be used to power the vehicle 1, for example, the battery 2 may be used as an operating power source for the vehicle 1. The vehicle 1 may also include a controller 3 and a motor 4, and the controller 3 is used to control the battery 2 to power the motor 4, for example, for the starting, navigation and working power requirements of the vehicle 1 during driving.

[0037] In some embodiments of the present application, the battery 2 can be used 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.

[0038] In some embodiments, the battery may be an energy storage device, which includes an energy storage container, an energy storage cabinet, and the like.

[0039] Please refer to Figure 2 , Figure 2This is a schematic diagram of the exploded structure of a battery provided in one embodiment of the present application. The battery includes a box body 5 and a battery cell 7, and the battery cell is accommodated in the box body. The box body is used to provide a storage space for the battery cell, and the box body can adopt a variety of structures.

[0040] In some optional embodiments, the box body 5 includes a first part 51 and a second part 52 , the first part 51 and the second part 52 cover each other, and the first part 51 and the second part 52 jointly define an accommodating space 53 for accommodating the battery cell 7 .

[0041] In some embodiments, the box 5 can be used as a part of the chassis structure of the vehicle 1. For example, part of the box 5 can become at least a part of the floor of the vehicle 1, or part of the box 5 can become at least a part of the cross beam and longitudinal beam of the vehicle 1.

[0042] In the battery 2, there can be multiple battery cells 7, and the multiple battery cells 7 can be connected in series, in parallel, or in mixed connection. Mixed connection means that the multiple battery cells 7 are both connected in series and in parallel. The multiple battery cells 7 can be directly connected in series, in parallel, or in mixed connection, and then the whole formed by the multiple battery cells 7 is accommodated in the box 5. Of course, the battery 2 can also be a battery module formed by connecting multiple battery cells 7 in series, in parallel, or in mixed connection, and then the multiple battery modules are connected in series, in parallel, or in mixed connection to form a whole, and accommodated in the box 5. The battery 2 can also include other structures, for example, the battery 2 can also include a converging component for realizing the electrical connection between the multiple battery cells 7.

[0043] Each battery cell 7 may be a secondary battery or a primary battery, or a lithium-sulfur battery, a sodium-ion battery or a magnesium-ion battery, but is not limited thereto. The battery cell 7 may be cylindrical, flat, rectangular or in other shapes.

[0044] In some embodiments, the battery cells 7 are connected by busbars to realize series or parallel connection of the circuits. Exemplarily, the busbars include busbars, busbars, and the like.

[0045] Please refer to Figure 3 , Figure 3 The schematic diagram of the exploded structure of the battery cell 7 provided in some embodiments of the present application. The battery cell 7 refers to the smallest unit that constitutes the battery 2. Figure 3 The battery cell 7 includes a housing 40, an electrode assembly 10 and other functional components.

[0046] The outer shell 40 may include an end cap assembly 30 and a shell 20. The end cap assembly 30 refers to a component that covers the opening of the shell 20 to isolate the internal environment of the battery cell 7 from the external environment. Without limitation, the shape of the end cap assembly 30 may be adapted to the shape of the shell 20 to match the shell 20. Optionally, the end cap assembly 30 may be made of a material with a certain hardness and strength (such as an aluminum alloy), so that the end cap assembly 30 is not easily deformed when squeezed or collided, so that the battery cell 7 can have a higher structural strength and the safety performance can also be improved. Functional components such as electrode terminals 25 may be provided on the end cap assembly 30. The electrode terminal 25 can be used to be electrically connected to the electrode assembly 10 for outputting or inputting electrical energy of the battery cell 7.

[0047] In some embodiments, a pressure relief mechanism 24 for releasing the internal pressure when the internal pressure or temperature of the battery cell 7 reaches a threshold value may also be provided on the end cap assembly 30. The material of the end cap assembly 30 may also be a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., which is not particularly limited in the embodiments of the present application.

[0048] The housing 20 is a component used to cooperate with the end cap assembly 30 to form the internal environment of the battery cell 7. The formed internal environment can be used to accommodate the electrode assembly 10, the electrolyte and other components. The housing 20 and the end cap assembly 30 can be independent components, and an opening can be set on the housing 20, and the internal environment of the battery cell 7 is formed by covering the opening with the end cap assembly 30.

[0049] The electrode assembly 10 is a component in the battery cell 7 where electrochemical reactions occur. One or more electrode assemblies 10 may be included in the housing 20. Multiple electrode assemblies 10 constitute an electrode unit. The electrode assembly 10 includes a positive electrode, a negative electrode, and a separator. During the charge and discharge process of the battery cell 7, active ions (such as lithium ions) are embedded and removed back and forth between the positive electrode and the negative electrode. The separator is arranged between the positive electrode and the negative electrode, which can prevent the positive and negative electrodes from short-circuiting, and at the same time allow active ions to pass through. In some embodiments, the electrode assembly 10 also includes a separator, which is arranged between the positive electrode and the negative electrode.

[0050] In some embodiments, the separator is a solid electrolyte, which is disposed between the positive electrode and the negative electrode and serves to transmit ions and isolate the positive and negative electrodes.

[0051] In some embodiments, the battery cell 7 further includes an electrolyte, which plays a role in conducting ions between the positive and negative electrodes. The present application has no specific restrictions on the type of electrolyte, which can be selected according to needs. The electrolyte can be liquid, gel or solid.

[0052] In some embodiments, the electrode assembly 10 is a wound structure. The positive electrode sheet and the negative electrode sheet are wound into a wound structure. In some embodiments, the electrode assembly 10 is a laminated structure. In some embodiments, the shape of the electrode assembly 10 can be cylindrical, flat, or multi-prism, etc. In some embodiments, the electrode assembly 10 is provided with a pole ear, and the pole ear can lead the current from the electrode assembly 10. The pole ear includes a positive pole ear and a negative pole ear.

[0053] With the development of battery technology, people have put forward higher requirements for the energy density of batteries. There are many functional components in the battery. If the functional components in the battery can be streamlined or the structure can be simplified while ensuring normal operation, the total weight of the battery can be reduced, and the space occupied by the functional components can be reduced, thereby increasing the energy density of the battery and further improving the endurance of the vehicle.

[0054] A pipe joint assembly is usually used between the heat exchange component in the box and the medium supply source. Commonly used pipe assemblies include three parts, namely a self-locking structure, a corrugated pipe, and a clamp structure, which are connected in sequence. Among them, the self-locking structure is used to connect to the heat exchange component in the battery, the clamp structure is used to connect the external medium pipeline, and the corrugated pipe is connected between the self-locking mechanism and the clamp structure to connect the two. However, the corrugated pipe occupies the space in the box, reduces the utilization rate of the space in the box, and reduces the energy density of the battery. In addition, it may interfere with the high-voltage connector in the box, causing the high-voltage connector to malfunction, reducing the stability of the battery operation, and reducing the efficiency of the box assembly.

[0055] Based on the above situation, the present application provides a box body, including a first side plate and a pipe joint assembly. Among them, by setting a heat exchange connection part to be connected with the heat exchange assembly in the battery, the heat exchange medium is introduced into the heat exchange assembly, or the heat exchange medium in the heat exchange assembly is exported. A medium connecting pipe is set to be connected to the source of heat exchange medium, and the heat exchange medium in the source is output to the heat exchange assembly, or the medium in the heat exchange assembly is input to the medium source. Furthermore, a through hole is set on the heat exchange connection part, and the heat exchange connection part is directly connected to the medium connecting pipe by connecting the medium connecting pipe to the through hole, thereby eliminating the components connecting the heat exchange connection part and the medium connecting pipe, reducing the number of components in the box, and reducing the space occupied by the pipe joint assembly, thereby improving the energy density and assembly efficiency of the battery.

[0056] The box provided in the embodiment of the present application is described in detail below in conjunction with the accompanying drawings. Figures 2 to 6 , Figure 2 This is a schematic diagram of the exploded structure of a battery according to an embodiment of the present application. Figure 3 This is a schematic diagram of the exploded structure of a battery cell according to an embodiment of the present application. Figure 4This is a schematic structural diagram of a first side plate of a box body according to an embodiment of the present application. Figure 5 This is a schematic diagram of the structure of a pipe joint assembly according to an embodiment of the present application. Figure 6 This is a schematic cross-sectional structure diagram of a pipe joint assembly according to an embodiment of the present application.

[0057] As shown in the figure, the housing 5 of the embodiment of the present application includes a first side plate 501 and a pipe joint assembly 6. The pipe joint assembly 6 is arranged on the first side plate 501, and the pipe joint assembly 6 includes a heat exchange connection part 601 and a medium connection pipe 602 connected to each other. A first flow channel 603 is arranged in the heat exchange connection part 601, and the first flow channel 603 is connected to the heat exchange connection part 601. The heat exchange connection part 601 is used to connect the medium interface of the heat exchange assembly, and the medium connection pipe 602 is used to connect the medium supply source pipeline. Among them, a through hole 604 connected to the first flow channel 603 is arranged on the heat exchange connection part 601, and the medium connection pipe 602 is connected to the through hole 604.

[0058] In some optional embodiments, the heat exchange assembly in the battery 2 generally includes components such as a heat exchange plate, a seal, a water pump, and an interface pipe. The heat exchange plate is generally formed by stacking two metal plates, and the metal plates are stamped to form an inwardly concave groove, and the groove is used for the circulation of the heat exchange medium. The two plates are sealed and connected by a seal to ensure the sealing performance of the heat exchange flow channel. The interface pipe is connected to the heat exchange flow channel on the heat exchange plate to facilitate the transmission of the heat exchange medium. The medium supply source generally includes a storage tank and a heat exchange medium disposed in the storage tank. The storage tank can also be connected to a heat dissipation device or a heating device to adjust the temperature of the heat exchange medium and improve the heat exchange efficiency of the heat exchange medium in the heat exchange assembly.

[0059] In the technical solution of the embodiment of the present application, a heat exchange connection part 601 is provided to be connected with the heat exchange assembly in the battery 2, so that the heat exchange medium is introduced into the heat exchange assembly, or the heat exchange medium in the heat exchange assembly is exported. A medium connection pipe 602 is provided to be connected with the source of the heat exchange medium, so that the heat exchange medium in the source is output to the heat exchange assembly, or the medium in the heat exchange assembly is input to the medium source. Furthermore, a through hole 604 is provided on the heat exchange connection part 601, and the heat exchange connection part 601 is directly connected to the medium connection pipe 602 by connecting the medium connection pipe 602 with the through hole 604, thereby eliminating the components connecting the heat exchange connection part 601 and the medium connection pipe 602, reducing the number of components in the box 5, and reducing the space occupied by the pipe joint assembly 6, thereby improving the energy density and assembly efficiency of the battery 2.

[0060] In some optional embodiments, there are two pipe joint assemblies 6 in the box 5, and the two pipe joint assemblies 6 are respectively connected to the medium inlet and the medium outlet, and are used to input the heat exchange medium into the heat exchange assembly or output the heat exchange medium from the heat exchange assembly.

[0061] In some embodiments of the present application, the heat exchange connection part 601 and the medium connection pipe 602 are an integrally formed structure. Integrally formed means that the heat exchange connection part 601 and the medium connection pipe 602 are formed into a whole at one time during the manufacturing process, rather than being combined together by welding, screws, etc. This method can reduce the connection points between components, thereby reducing the overall weight, improving the structural strength and rigidity, and reducing production time and cost.

[0062] The above structure further improves the production efficiency of the pipe joint assembly 6 and increases the connection strength between the heat exchange connection part 601 and the medium connection pipe 602 .

[0063] Please refer to Figure 2 as well as Figure 4 In some embodiments of the present application, the box body 5 further includes a bottom plate 503 and a plurality of second side plates 502. The first side plate 501, the plurality of second side plates 502 and the bottom plate 503 together enclose a receiving space 53 for receiving the battery cell 7. The first side plate 501 is provided with a mounting hole 504. The heat exchange connection part 601 is provided in the receiving space 53, and the medium connection pipe 602 is provided in the mounting hole 504.

[0064] The above-mentioned technical solution arranges the heat exchange connection part 601 in the accommodating space 53, which can reduce the distance between the heat exchange connection part 601 and the heat exchange component and make full use of the space inside the box body 5; the heat exchange connection part 601 is arranged in the mounting hole 504, which improves the installation efficiency of the heat exchange component and the first side plate 501, and can facilitate the connection between the medium supply source and the heat exchange connection part 601, thereby improving the connection efficiency.

[0065] In some embodiments of the present application, the medium connecting pipe 602 is arranged to intersect with the first flow channel 603. Optionally, the medium connecting pipe 602 and the first flow channel 603 are perpendicular to each other. In the above structure, the medium connecting pipe 602 and the first flow channel 603 extend in different directions, which can make full use of the accommodation space 53 inside the box 5, reduce the volume occupied by the pipe joint assembly 6, and improve the energy density of the battery 2.

[0066] In some optional embodiments, the medium connecting pipe 602 is arranged parallel to the bottom plate 503, and the heat exchange connecting part 601 is arranged parallel to the first side plate 501. In the above structure, it is convenient to connect the medium connecting pipe 602 with the hose of the medium supply source.

[0067] like Figure 6 as well as Figure 7As shown, in some embodiments of the present application, the heat exchange connection part 601 includes a mounting part 605 and a connector 606. The mounting part 605 is connected to the medium connection pipe 602, and a receiving groove 607 is provided in the mounting part 605. The through hole 604 is provided in the mounting part 605 and communicates with the receiving groove 607. The connector 606 is provided in the receiving groove 607, and the connector 606 is used to connect the medium interface. The first flow channel 603 is provided in the connector 606. Among them, a protruding first connecting part 608 is provided in the receiving groove 607, and a concave second connecting part 609 is provided on the outer periphery of the connector 606. The second connecting part 609 cooperates with the first connecting part 608 to detachably connect the connector 606 to the mounting part 605.

[0068] In the above structure, the connection strength between the heat exchange connection part 601 and the medium connection pipe 602 is improved by providing the mounting part 605, and the assembly convenience and assembly efficiency of the heat exchange connection part 601 and the medium interface are improved by providing the connector 606. In addition, the mounting part 605 and the connector 606 are detachably connected, which is convenient for subsequent maintenance and adaptation to different medium interfaces, and expands the adaptability of the pipe joint assembly 6.

[0069] In some optional embodiments, the shape of the receiving groove 607 matches the structure of the connecting head 606 , and the above structure can improve the connection efficiency and sealing performance between the mounting portion 605 and the connecting head 606 .

[0070] like Figure 8 As shown, in some embodiments of the present application, a sealing assembly 610 is further provided between the mounting portion 605 and the connector 606. Exemplarily, the sealing assembly 610 includes a sealing ring or a sealant, and optionally, the number of the sealing rings is multiple, and the multiple sealing rings are arranged at intervals along the axial direction of the first flow channel 603. The above structure improves the sealing performance between the mounting portion 605 and the connector 606, reduces the risk of leakage of the pipe joint assembly 6, and improves the stability of the operation of the battery 2.

[0071] like Figure 7 As shown, in some embodiments of the present application, the medium connecting pipe 602 includes a pipe body 611 and a hoop ring 612. One end of the pipe body 611 is connected to the mounting portion 605. The hoop ring 612 is provided at one end of the pipe body 611 away from the mounting portion 605. The hoop ring 612 is formed by protruding outward from the outer circumference of the pipe body 611, and the hoop ring 612 is used to clamp with the medium supply source pipeline. In the above structure, by providing the hoop ring 612, the hose of the medium pipeline is directly connected to the pipeline joint assembly 6, which reduces the intermediate connecting pipes or connecting components, improves the integration degree of the pipeline joint assembly 6, reduces the total weight of the box 5, and improves the energy density of the battery 2.

[0072] In some optional embodiments, the pipe body 611 and the hoop ring 612 are integrally formed. The above structure can improve the connection strength between the pipe body 611 and the hoop ring 612 and improve the efficiency of connecting the rubber hose and the medium connecting pipe 602.

[0073] In some embodiments of the present application, the outer diameter of the hoop ring 612 gradually increases along the direction from the tube body 611 to the mounting portion 605. By gradually increasing the diameter of the hoop ring 612, the pressure on the end of the medium supply hose gradually increases, thereby improving the sealing between the hose and the hoop ring 612.

[0074] The embodiment of the present application provides a battery 2, which includes a battery cell 7 and the box 5 in the above embodiment. 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 connection part 601 is provided to connect with the heat exchange component in the battery 2, so that the heat exchange medium is introduced into the heat exchange component, or the heat exchange medium in the heat exchange component is exported. The medium connection pipe 602 is provided to be connected to the source of the heat exchange medium, and the heat exchange medium in the source is output to the heat exchange component, or the medium in the heat exchange component is input to the medium source. Further, a through hole 604 is provided on the heat exchange connection part 601, and the heat exchange connection part 601 is directly connected to the medium connection pipe 602 by connecting the medium connection pipe 602 with the through hole 604, thereby eliminating the components connecting the heat exchange connection part 601 and the medium connection pipe 602, reducing the number of components in the box 5, and reducing the space occupied by the pipe joint assembly 6, thereby improving the energy density and assembly efficiency of the battery 2.

[0075] 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 box (5), characterized in that: include: A first side plate (501); A pipe joint assembly (6) is arranged on the first side plate (501), the pipe joint assembly (6) comprising a heat exchange connection part (601) and a medium connection pipe (602) connected to each other, a first flow channel (603) is arranged in the heat exchange connection part (601), the first flow channel (603) is communicated with the heat exchange connection part (601), the heat exchange connection part (601) is used to connect to the medium interface of the heat exchange assembly, and the medium connection pipe (602) is used to connect to the medium supply source pipeline; The heat exchange connection portion (601) is provided with a through hole (604) connected to the first flow channel (603), and the medium connection pipe (602) is connected to the through hole (604).

2. The box (5) according to claim 1, characterized in that: The heat exchange connection part (601) and the medium connection pipe (602) are an integrally formed structure.

3. The box (5) according to claim 1, characterized in that: The box body (5) further comprises a bottom plate (503) and a plurality of second side plates (502); the first side plate (501), the plurality of second side plates (502) and the bottom plate (503) together enclose a receiving space (53) for receiving a battery cell (7); the first side plate (501) is provided with a mounting hole (504); Wherein, the heat exchange connection part (601) is arranged in the accommodating space (53), and the medium connection pipe (602) is arranged in the installation hole (504).

4. The box (5) according to any one of claims 1 to 3, characterized in that: The medium connecting pipe (602) is arranged to intersect with the first flow channel (603).

5. The box (5) according to claim 4, characterized in that: The heat exchange connection part (601) comprises: A mounting portion (605) connected to the medium connecting pipe (602), a receiving groove (607) being provided in the mounting portion (605), and the through hole (604) being provided in the mounting portion (605) and communicating with the receiving groove (607); A connector (606) is disposed in the receiving groove (607), the connector (606) is used to connect the medium interface, and the first flow channel (603) is disposed in the connector (606); Wherein, a protruding first connecting portion (608) is provided in the accommodating groove (607), and a concave second connecting portion (609) is provided on the outer periphery of the connecting head (606), and the second connecting portion (609) cooperates with the first connecting portion (608) to detachably connect the connecting head (606) and the mounting portion (605).

6. The box (5) according to claim 5, characterized in that: A sealing component (610) is also provided between the mounting portion (605) and the connecting head (606).

7. The box (5) according to claim 5, characterized in that: The medium connecting pipe (602) comprises: A tube body (611), one end of which is connected to the mounting portion (605); The clamp ring (612) is arranged at one end of the pipe body (611) away from the mounting portion (605). The clamp ring (612) is formed by protruding outward from the outer circumference of the pipe body (611). The clamp ring (612) is used to be clamped with the medium supply source pipeline.

8. The box (5) according to claim 7, characterized in that: Along the direction from the tube body (611) toward the mounting portion (605), the outer diameter of the clamp ring (612) gradually increases.

9. A battery (2), characterized in that: include: A battery cell (7), and A casing (5) as claimed in any one of claims 1 to 8.

10. An electrical device, characterized in that: The electrical device comprises the battery (2) as claimed in claim 9, and the battery (2) is used to provide electrical energy.

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