Battery distribution box, battery, and electric device

Abstract

The present application relates to the field of batteries and provides a battery distribution box, a battery, and an electric device. The battery distribution box provided in the present application comprises a shell, an electrical assembly and a heat dissipation cover plate, wherein an accommodating cavity having an opening is formed in the shell; the electrical assembly is arranged in the accommodating cavity, and the electrical assembly comprises a plurality of electrical elements and conductive connectors connected to the electrical elements; the heat dissipation cover plate is connected to the shell to cover the opening, and the conductive connectors are at least partially in contact with the heat dissipation cover plate to achieve heat conduction. The conductive connectors being in contact with the heat dissipation cover plate enables a simplified manner of connection between the conductive connectors and the cover plate with heat dissipation function, reduced extension length of the conductive connectors, and improved space utilization rate of the battery distribution box.

Description

Battery distribution box, battery and electrical device

[0001] Cross-references

[0002] This application refers to Chinese patent application No. 202410080889.2, filed on January 19, 2024, entitled “Battery distribution box, battery and electrical device”, which is incorporated into this application in its entirety by reference. Technical Field

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

[0004] Energy conservation and emission reduction are key to the sustainable development of the automotive industry. Electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important component of the sustainable development of the automotive industry. For electric vehicles, battery technology is a key factor in their development.

[0005] As the core load electrical component of the battery, the battery distribution box needs to bear the load current of the entire battery. The load current will generate a lot of heat. Since most batteries are fully enclosed spaces, the accumulated heat cannot be dissipated in time, which may burn the battery distribution box or even cause a fire. Therefore, it is necessary to make improvements.

[0006] Summary of the Invention

[0007] The present application aims to solve at least one of the technical problems existing in the background technology. To this end, one purpose of the present application is to provide a battery distribution box, a battery and an electrical device to improve the heat dissipation problem of the battery distribution box.

[0008] An embodiment of the first aspect of the present application provides a battery distribution box, which includes: a shell, an electrical component and a heat dissipation cover; the shell forms a accommodating cavity with an opening; the electrical component is arranged in the accommodating cavity, the electrical component includes a plurality of electrical components, and a conductive connector connected to the electrical components; the heat dissipation cover is connected to the shell to cover the opening, wherein the conductive connector is at least partially in contact with the heat dissipation cover to achieve heat conduction.

[0009] In the technical solution of the embodiment of the present application, by setting the cover plate as a heat dissipation cover plate and making the conductive connector at least partially contact the heat dissipation cover plate to achieve heat conduction, the connection method between the conductive connector and the cover plate with heat dissipation function can be simplified, the extension length of the conductive connector can be saved, and the space utilization rate of the battery distribution box can be improved.

[0010] In some embodiments, the conductive connector includes a connecting portion and a raised portion. The connecting portion is electrically connected to the electrical component. The raised portion is connected to the connecting portion and protrudes relative to the connecting portion toward the side of the housing where the opening is located. The raised portion contacts the heat dissipation cover plate to achieve heat conduction. The provision of the raised portion allows for a thermal connection without occupying additional space within the battery distribution box, simplifying the extended structure of the conductive connector.

[0011] In some embodiments, the connecting portion is connected to a connection terminal of the electrical component, and the connection terminal is located on a surface of the electrical component near the opening of the housing. Locating the connection terminal on the surface of the electrical component near the opening facilitates the installation of various components, particularly the conductive connector, and reduces the difficulty of manufacturing and installing the battery distribution box.

[0012] In some embodiments, the connecting portion and the connecting terminal are connected via a fastener, and the height of the raised portion relative to the connecting portion is greater than the height of the fastener on the side of the connecting portion closest to the opening of the housing. By limiting the height of the raised portion, structural interference caused by the fastener connection can be avoided, thereby ensuring contact between the raised portion and the heat dissipation cover, thereby improving heat dissipation reliability.

[0013] In some embodiments, the heat dissipation cover includes a heat dissipation portion, which includes a heat dissipation body having a liquid cooling channel disposed therein, and a liquid inlet and outlet communicating with the liquid cooling channel; the conductive connector is at least partially in contact with the heat dissipation body. Configuring the heat dissipation portion of the heat dissipation cover as a liquid cooling assembly can improve heat dissipation and cooling efficiency, and the heat dissipation portion can also communicate with the battery's liquid cooling assembly, significantly reducing the manufacturing cost and control difficulty of the heat dissipation cover.

[0014] In some embodiments, the heat dissipation cover further includes a frame portion, which is disposed around the periphery of the heat dissipation portion and is detachably connected to the housing. Providing the frame portion to support the heat dissipation portion and connect to the housing simplifies the structure of the heat dissipation portion, thereby reducing processing difficulty and saving manufacturing costs.

[0015] In some embodiments, the heat dissipation portion and the frame portion are integrally formed. By integrally forming the heat dissipation portion and the frame portion, the number of parts can be reduced, thereby reducing assembly difficulty and improving production efficiency.

[0016] In some embodiments, the heat dissipation portion is a liquid cooling plate, and the frame portion is injection molded along the outer periphery of the liquid cooling plate. By injection molding around the liquid cooling plate to create an integrated heat dissipation cover plate, the heat dissipation portion and the frame portion are more tightly connected. This reduces the weight and manufacturing cost of the cover plate, simplifies the cover plate structure, and improves production efficiency without compromising heat dissipation.

[0017] In some embodiments, the battery distribution box further includes an insulating layer located on the side of the heat dissipation cover plate that contacts the conductive connector. This insulating layer ensures that only heat transfer occurs between the conductive connector and the heat dissipation cover plate, reducing the risk of electrical leakage and improving the safety of the battery distribution box to a certain extent.

[0018] In some embodiments, the battery distribution box further includes a heat conductor positioned between the heat dissipation cover and the conductive connector for heat conduction. The provision of the heat conductor increases the contact area between the conductive connector and the heat dissipation cover, accelerating heat conduction efficiency between the conductive connector and the heat dissipation cover to a certain extent, thereby improving heat dissipation performance.

[0019] In some embodiments, the heat conducting member is made of an insulating heat conducting material. The heat conducting member itself has an insulating function, so there is no need to provide an additional insulating layer, which can save processes or reduce components.

[0020] An embodiment of the second aspect of the present application provides a battery, a battery cell and the battery distribution box in the above embodiment, wherein the battery distribution box is electrically connected to the battery cell.

[0021] An embodiment of the third aspect of the present application provides an electrical device, which includes the battery in the above embodiment, and the battery is used to provide electrical energy.

[0022] 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

[0023] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in the present application and should not be regarded as limiting the scope of the present application. In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on the drawings without paying creative work.

[0024] FIG1 is a schematic structural diagram of a vehicle according to some embodiments of the present application;

[0025] FIG2 is a schematic diagram of the exploded structure of a battery according to some embodiments of the present application;

[0026] FIG3 is a schematic diagram of the exploded structure of a battery distribution box according to some embodiments of the present application;

[0027] FIG4 is a schematic diagram of the structure inside the battery distribution box housing in some embodiments of the present application;

[0028] FIG5 is a schematic structural diagram of a heat dissipation cover plate of a battery distribution box according to some embodiments of the present application;

[0029] FIG6 is a schematic diagram of the exploded structure of a battery distribution box according to some other embodiments of the present application.

[0030] Description of reference numerals:

[0031] Vehicles 1000;

[0032] Battery 100, controller 200, motor 300;

[0033] Box body 10, first part 11, second part 12;

[0034] Battery cell 20, battery distribution box 30, shell 310, electrical assembly 320, electrical element 321, conductive connector 322, protrusion 3221, connection part 3222, heat dissipation cover 330, heat dissipation part 331, heat dissipation body 3311, liquid inlet 3312, liquid outlet 3313, frame part 332. DETAILED DESCRIPTION

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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).

[0041] 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.

[0042] 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.

[0043] Currently, market developments indicate that power batteries are becoming increasingly widely used. They are not only used in energy storage systems such as hydropower, thermal, wind, and solar power plants, but are also widely used in electric vehicles like electric bicycles, electric motorcycles, and electric vehicles, as well as in military equipment and aerospace. As power battery applications continue to expand, market demand is also growing.

[0044] The battery distribution box is responsible for managing the distribution and power outage of battery current. With the development of battery technology, the demand for batteries in electrical devices has continued to increase, and the current that the battery distribution box needs to withstand has also increased, which in turn has led to a significant increase in heat. In related technologies, a liquid cooling plate is set at the bottom of the battery distribution box, and the conductive connectors in the matching box shell are in contact with the liquid cooling plate to dissipate heat. Since the liquid cooling plate is at the bottom of the shell, the conductive connectors need to be led down to the bottom of the shell to contact the liquid cooling plate. This increases the length of the conductive connectors, which not only increases the cost, but also occupies the internal space of the distribution box, resulting in space waste and increasing the difficulty of installing and manufacturing the distribution box.

[0045] To address the aforementioned issues, the present invention proposes a battery distribution box comprising a housing, an electrical assembly, and a heat dissipation cover. The housing forms a receiving cavity with an opening; the electrical assembly is disposed within the receiving cavity, and the electrical assembly includes a plurality of electrical components and conductive connectors connected to the electrical components; the heat dissipation cover is connected to the housing to cover the opening, and the conductive connectors are at least partially in contact with the heat dissipation cover to facilitate heat conduction. By replacing the cover with a heat dissipation cover and contacting the conductive connectors with the heat dissipation cover, the extended length of the conductive connectors can be reduced, improving the space utilization of the distribution box, saving manufacturing costs, and reducing manufacturing difficulty.

[0046] The battery cells disclosed in the embodiments of the present application can be used, but are not limited to, in electrical devices such as vehicles, ships, or aircraft. A power supply system comprising the battery cells and batteries disclosed in the present application can be used to form the electrical device.

[0047] The present invention provides an electric device that uses a battery as a power source. The electric device may be, but is not limited to, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery-powered vehicle, an electric car, a ship, a spacecraft, etc. The electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc. The spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, etc.

[0048] 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.

[0049] Please refer to Figure 1, which is a schematic diagram of the structure of the vehicle 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.

[0050] 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.

[0051] Please refer to Figure 2, which is a schematic diagram of the exploded structure of a battery provided in some embodiments of the present application. Battery 100 includes a housing 10 and battery cells 20, with battery cells 20 housed within housing 10. Housing 10 is used to provide storage space for battery cells 20 and can have various structures. In some embodiments, housing 10 can include a first portion 11 and a second portion 12, which overlap each other and together define a storage space for battery cells 20. Second portion 12 can be a hollow structure with one end open. First portion 11 can be a plate-like structure, with first portion 11 overlapping the open side of second portion 12, so that the first and second portions 11 and 12 together define a storage space. Alternatively, first portion 11 and second portion 12 can each be a hollow structure with one end open, with the open side of first portion 11 overlapping the open side of second portion 12. Of course, housing 10 formed by first portion 11 and second portion 12 can have various shapes, such as a cylinder or a rectangular parallelepiped.

[0052] In the battery 100, there may be multiple battery cells 20, and the multiple battery cells 20 may be connected in series, in parallel, or in a hybrid connection. A hybrid connection refers to a combination of series and parallel connections among the multiple battery cells 20. The multiple battery cells 20 may be directly connected in series, in parallel, or in a hybrid connection, and then the entire battery cell 20 may be housed within the housing 10. Of course, the battery 100 may also be a battery module formed by first connecting multiple battery cells 20 in series, in parallel, or in a hybrid connection, and then the multiple battery modules are further connected in series, in parallel, or in a hybrid connection to form an entire battery cell, and then housed within the housing 10. The battery 100 may also include other structures, such as a busbar assembly for electrically connecting the multiple battery cells 20, and a battery mating box connected to the busbar assembly.

[0053] Each battery cell 20 may be a secondary battery or a primary battery, and may also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 20 may be cylindrical, flat, rectangular, or in other shapes.

[0054] Please refer to Figures 3 and 4. Figure 3 is a schematic diagram of the exploded structure of the battery distribution box provided in some embodiments of the present application, and Figure 4 is a schematic diagram of the structure inside the battery distribution box shell in some embodiments of the present application.

[0055] An embodiment of the present application provides a battery distribution box 30, including a shell 310, an electrical component 320 and a heat dissipation cover 330, wherein the shell 310 forms a receiving cavity with an opening; the electrical component 320 is arranged in the receiving cavity, and the electrical component 320 includes multiple electrical components 321, and conductive connectors 322 connected to the electrical components 321; the heat dissipation cover 330 is connected to the shell 310 to cover the opening, and the conductive connector 322 is at least partially in contact with the heat dissipation cover 330 to achieve heat conduction.

[0056] The housing 310 can be a square housing with an opening, or a housing of another shape, with a housing cavity formed therein. The electrical assembly 320 includes various electrical components arranged within the battery distribution box 30, such as relays and fuses. These components can be fixedly connected to the bottom or sidewalls of the housing 310. The conductive connector 322 is a conductive member used to connect different electrical components or to connect the electrical components within the battery distribution box 30 to the outside world. The conductive connector 322 can be made of a conductive metal, such as copper.

[0057] The heat dissipation cover 330 is a cover with heat dissipation function, which can be covered on the opening of the shell. The heat dissipation cover 330 can be a cover with heat dissipation function, such as a heat dissipation component containing air cooling or liquid cooling, or a structure or coating with heat dissipation function, which are not listed here one by one.

[0058] The conductive connector 322 is at least partially in contact with the heat dissipation cover plate 330, for example, the conductive connector 322 abuts against the heat dissipation cover plate 330. The heat dissipation cover plate 330 is disposed on the top of the battery distribution box 30. Compared to disposing heat dissipation components at the bottom of the housing, the conductive connector 322 does not need to extend to the bottom of the housing, thereby reducing the length of the conductive connector 322. Furthermore, the heat dissipation cover plate 330 located on top of the conductive connector 322 makes contact between the conductive connector 322 easier. The heat dissipation cover plate 330 itself has good heat dissipation performance and can promptly dissipate heat transferred from the conductive connector 322 without excessively occupying the internal space of the battery distribution box 30.

[0059] By setting the cover plate as a heat dissipation cover plate 330 and contacting the conductive connector 322 with the heat dissipation cover plate 330, the connection method between the conductive connector 322 and the cover plate with heat dissipation function can be simplified, the extension length of the conductive connector 322 can be saved, and the space utilization rate of the battery distribution box 30 can be improved.

[0060] According to some embodiments of the present application, as shown in Figures 3 and 4, the conductive connector 322 includes a connecting portion 3222 and a protruding portion 3221, the connecting portion 3222 is electrically connected to the electrical component 321; the protruding portion 3221 is connected to the connecting portion 3222, and the protruding portion 3221 protrudes relative to the connecting portion 3222 toward the side where the opening of the shell 310 is located, and the protruding portion 3221 contacts the heat dissipation cover plate 330 to achieve heat conduction.

[0061] The connecting portion 3222 may be located at the end of the conductive connector 322 , and the protruding portion 3221 may be located between the two connecting portions 3222 and protrude toward the opening of the housing relative to the connecting portions 3222 , that is, toward the side where the heat dissipation cover 330 is located.

[0062] Due to the connection and arrangement requirements of electrical components 321, a certain gap must be maintained between the lower surface of heat dissipation cover plate 330 and the upper surface of electrical components 321 when heat dissipation cover plate 330 is placed on housing 310 to prevent interference. The height of raised portion 3221 is adapted to this gap, allowing raised portion 3221 to contact the inner surface of heat dissipation cover plate 330 when heat dissipation cover plate 330 is placed on housing 310. This allows heat generated by excessive current to be promptly transferred to heat dissipation cover plate 330.

[0063] By providing the protrusion 3221 , a heat-conducting connection can be achieved without occupying additional internal space of the battery distribution box 30 , thereby simplifying the extension structure of the conductive connector 322 .

[0064] According to some embodiments of the present application, as shown in FIG. 3 and FIG. 4 , the connecting portion 3222 is connected to a connecting terminal of the electrical component 321 , and the connecting terminal is located on a surface of the electrical component 321 close to the opening of the housing 310 .

[0065] The electrical components 321 can be directly or indirectly connected to the bottom or side surfaces of the housing 310 to achieve a stable arrangement. The connection terminals of the electrical components 321 can be located on a surface near the opening of the housing 310, for example, on the upper surface of each electrical component 321. In this way, during installation, the electrical components 321 can be installed and positioned first, then the conductive connectors 322 can be used to achieve electrical connection, and finally the heat dissipation cover 330 can be closed.

[0066] Providing the connection terminal on the surface of the electrical component 321 close to the opening is more conducive to the installation of various components, especially the conductive connector 322, and reduces the difficulty of manufacturing and installing the battery distribution box 30.

[0067] According to some embodiments of the present application, as shown in Figures 3 and 4, the connecting portion 3222 is connected to the connecting terminal through a fastener 323, and the height of the protrusion 3221 relative to the connecting portion 3222 is greater than the height of the fastener 323 located on the side of the connecting portion 3222 close to the opening of the shell 310.

[0068] The fastener 323 can be any type of fastener, such as a bolt or screw. In some examples, the fastener 323 can be a hexagonal bolt. After being screwed into the threaded hole, the hexagonal bolt still has its head located on the side of the connecting portion 3222 of the conductive connector 322 near the opening. The height of the raised portion 3221 relative to the connecting portion 3222 should be greater than the height of the top of the hexagonal bolt relative to the plane of the upper surface of the connecting portion.

[0069] In this embodiment, by limiting the height of the protrusion 3221, structural interference caused by fastener connection can be avoided, and reliable contact between the protrusion 3221 and the heat dissipation cover plate 330 can be achieved, thereby improving the reliability of heat dissipation.

[0070] Please refer to FIG5 , which is a schematic structural diagram of a heat dissipation cover of a battery distribution box according to some embodiments of the present application.

[0071] According to some embodiments of the present application, as shown in Figure 5, the heat dissipation cover 330 includes a heat dissipation portion 331, the heat dissipation portion 331 includes a heat dissipation body 3311 with a liquid cooling channel provided inside, and a liquid inlet 3312 and a liquid outlet 3313 connected to the liquid cooling channel; the conductive connecting member 322 is at least partially in contact with the heat dissipation body 3311.

[0072] The heat sink 331 can be a liquid-cooled component, such as a water-cooled plate. One or more liquid-cooling channels can be provided within the heat sink body 3311 to allow for the circulation of cooling liquid. A liquid inlet 3312 and a liquid outlet 3313 can be located at opposite ends of the heat sink body 3311 and communicate with the liquid-cooling channels, respectively, to allow the entry and exit of cooling liquid. In some embodiments, the liquid inlet 3312 and liquid outlet 3313 of the heat sink 331 can communicate with the battery's liquid cooling assembly. The battery's liquid cooling assembly and the heat sink 331 of the battery distribution box 30 can even be controlled by a battery management system.

[0073] Setting the heat dissipation portion 331 of the heat dissipation cover 330 as a liquid cooling component can improve the heat dissipation and cooling effect, and the heat dissipation portion 331 can also be connected to the liquid cooling component of the battery, which can significantly reduce the manufacturing cost and control difficulty of the heat dissipation cover 330.

[0074] According to some embodiments of the present application, as shown in FIG5 , the heat dissipation cover 330 further includes a frame portion 332 , which is disposed around the outer periphery of the heat dissipation portion 331 , and the frame portion 332 is detachably connected to the housing 310 .

[0075] The frame portion 332 is a frame-shaped component surrounding the heat dissipation portion 331 and can support the heat dissipation portion 331. The material of the frame portion 332 can be the same as that of the housing 310 or different.

[0076] The heat dissipation cover 330 needs to cover and connect with the housing 310. The corresponding connection structure can be provided on the frame portion 332. In some embodiments, the frame portion 332 is provided with a corresponding locking structure on the housing 310, so that the frame portion 332 and the housing 310 are detachably connected. The locking structure can be a snap-fit ​​connection structure or a threaded connection structure.

[0077] By providing the frame portion 332 for supporting the heat dissipation portion 331 and connecting with the housing 310 , the structure of the heat dissipation portion 331 can be simplified, thereby reducing the processing difficulty and saving the manufacturing cost.

[0078] According to some embodiments of the present application, as shown in FIG5 , the heat dissipation portion 331 and the frame portion 332 are integrally formed.

[0079] The frame portion 332 may be made of the same material as the heat dissipation portion 331 , and the heat dissipation portion 331 having an internal flow channel and the frame portion 332 having a locking structure may be obtained through an integrated molding process.

[0080] By integrally forming the heat dissipation portion 331 and the frame portion 332 , the number of parts can be reduced, thereby lowering the difficulty of assembly and improving production efficiency.

[0081] According to some embodiments of the present application, as shown in FIG5 , the heat dissipation portion 331 is a liquid cooling plate, and the frame portion 332 is configured to be injection molded along the periphery of the liquid cooling plate.

[0082] To ensure adequate cooling, the liquid cooling plate is made of metal, such as aluminum. The frame portion 332, which serves as a support and connection structure, does not need to be made of metal, which would increase cost and weight. In some embodiments, the frame portion 332 can be made of plastic. Specifically, the finished liquid cooling plate can be placed in an injection mold, and then injection molded along the periphery of the liquid cooling plate to obtain an integrated heat dissipation cover with the liquid cooling plate as the center and the injection-molded frame portion 332 as the periphery. In some embodiments, the material and structure of the liquid cooling plate can be the same as those used in batteries, which can reduce manufacturing costs.

[0083] By injection molding an integrated heat dissipation cover around the liquid cooling plate, the heat dissipation portion 331 and the frame portion 332 can be more closely connected, which can reduce the weight and manufacturing cost of the cover without affecting the heat dissipation effect, simplify the structure of the cover, and improve production efficiency.

[0084] According to some embodiments of the present application, the battery distribution box 30 further includes an insulating layer (not shown in the figure), which is located on a side surface of the heat dissipation cover 330 that is in contact with the conductive connector 322 .

[0085] The insulating layer can be a layer of insulating material sprayed or adhered onto the side of the heat dissipation cover plate 330 facing the accommodating cavity. This prevents leakage when the conductive connector 322 contacts the heat dissipation cover plate 330. In some embodiments, the insulating layer can be a film layer sprayed directly onto the lower surface of the liquid cooling plate serving as the heat dissipation portion 331.

[0086] By providing an insulating layer, only heat transfer can be achieved when the conductive connector 322 contacts the heat dissipation cover 330 , thereby reducing the risk of electric leakage and improving the safety of the battery distribution box 30 to a certain extent.

[0087] Please refer to FIG. 6 , which is a schematic diagram of the exploded structure of a battery distribution box according to other embodiments of the present application.

[0088] According to some embodiments of the present application, the battery distribution box 30 further includes a heat conducting member 340 , which is located between the heat dissipation cover 330 and the conductive connector 322 for heat conduction.

[0089] The heat conductor 340 can be in the shape of a flat plate and attached to the side surface of the heat dissipation cover 330 for contact with the conductive connector 322. The projected area of ​​the heat conductor 340 on the heat dissipation cover 330 is much larger than the area of ​​contact between the conductive connector 322 and the heat dissipation cover 330, so that a large amount of heat on the conductive connector 322 can be dispersed and conducted to the heat dissipation part 331 for heat dissipation. In some embodiments, the heat conductor 340 can be made of an elastic heat-conductive material, so that it can play a buffering role when the conductive connector 322 contacts the heat dissipation cover 330, which is more conducive to maintaining the contact state between the conductive connector 322 and the heat dissipation cover 330, and is also convenient for controlling the matching size of the two. For example, the matching size of the two can be designed to be an interference fit. The heat conductor 340 can be made of a material with a high thermal conductivity coefficient, such as metals such as copper and aluminum, or graphite or silicone.

[0090] In some embodiments, the thermal conductor 340 may be a film layer formed by spraying or coating on the surface of the heat dissipation cover plate 330 that contacts the conductive connector 322. For example, the surface of the heat dissipation cover plate 330 that contacts the conductive connector 322 may be sequentially provided with an insulating layer and a thermal conductive layer.

[0091] The provision of the heat conducting member 340 can increase the contact area between the conductive connecting member 322 and the heat dissipation cover plate 330 , thereby accelerating the heat conduction efficiency between the conductive connecting member 322 and the heat dissipation cover plate 330 to a certain extent, thereby improving the heat dissipation performance.

[0092] According to some embodiments of the present application, the heat conducting member 340 is made of a heat-conductive insulating material.

[0093] The heat conductor 340 itself is made of a material with excellent thermal conductivity and insulation properties, such as alumina ceramic, magnesium oxide ceramic, silicone rubber, etc. The heat conductor 340 can be a thermally conductive insulating film layer formed by spraying or coating on the surface of the heat dissipation cover plate 330 that contacts the conductive connector 322.

[0094] The heat conducting member 340 itself has an insulating function, so there is no need to provide an additional insulating layer, which can save processes or reduce components.

[0095] According to some embodiments of the present application, a battery is further provided, including a battery cell and a battery distribution box 30 as described in the above embodiment, wherein the battery distribution box 30 is electrically connected to the battery cell.

[0096] According to some embodiments of the present application, an electrical device is further provided. The electrical device includes a battery as described in the above embodiments, and the battery is used to provide electrical energy.

[0097] The technical solution of the present application is further described below in conjunction with a specific embodiment.

[0098] As shown in Figures 3 to 6, the battery distribution box 30 includes a shell 310, an electrical component 320 and a heat dissipation cover 330. The shell 310 forms a accommodating cavity with an opening; the electrical component 320 is arranged in the accommodating cavity, and the electrical component 320 includes multiple electrical components 321, and conductive connectors 322 connected to the electrical components 321; the heat dissipation cover 330 is connected to the shell 310 to cover the opening.

[0099] The conductive connector 322 includes a connecting portion 3222 and a protruding portion 3221, the connecting portion 3222 is conductively connected to the electrical component 321; the protruding portion 3221 is connected to the connecting portion 3222, and the protruding portion 3221 protrudes toward the side where the opening is located relative to the connecting portion 3222, the connecting portion 3222 is connected to the connecting terminal of the electrical component 321 through a fastener 323, and the connecting terminal is located on the surface of the electrical component 321 close to the opening, and the height of the protruding portion 3221 relative to the connecting portion 3222 is greater than the height of the fastener 323 located on the side of the connecting portion 3222 close to the opening.

[0100] The heat dissipation cover 330 includes a heat dissipation portion 331 and a frame portion 332. The frame portion 332 is disposed around the periphery of the heat dissipation portion 331. The heat dissipation portion 331 is a liquid cooling plate, and the frame portion 332 is injection molded along the periphery of the liquid cooling plate.

[0101] The heat dissipation portion 331 includes a heat dissipation body 3311 with a liquid cooling channel disposed therein, and a liquid inlet 3312 and a liquid outlet 3313 communicating with the liquid cooling channel. The raised portion 3221 of the conductive connector 322 contacts the heat dissipation body 3311 .

[0102] The surface of the heat dissipation cover plate 330 that contacts the conductive connector 322 is provided with an insulating layer and a thermal conductive layer in sequence. In some embodiments, the surface of the heat dissipation cover plate 330 that contacts the conductive connector 322 is provided with a thermal conductive insulating layer.

[0103] 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 battery distribution box, comprising: A housing, forming a receiving cavity with an opening; An electrical component, disposed in the receiving cavity, the electrical component including a plurality of electrical elements, and a conductive connection member electrically connected to the electrical elements; And A heat dissipation cover plate, connected to the housing to cover the opening; Wherein, at least a part of the conductive connection member is in contact with the heat dissipation cover plate to achieve heat conduction.

2. The battery power distribution box according to claim 1, wherein, The conductive connection member includes A connection portion, the connection portion being electrically connected to the electrical element; and A convex portion, connected to the connection portion, and the convex portion protruding relative to the connection portion toward the side where the opening of the housing is located, the convex portion being in contact with the heat dissipation cover plate to achieve heat conduction.

3. The battery distribution box according to claim 2, wherein The connection portion is electrically connected to a connection terminal of the electrical element, and the connection terminal is located on a surface of the electrical element close to the opening of the housing.

4. The battery distribution box according to claim 3, wherein, The connection portion and the connection terminal are connected by a fastener, and the height by which the convex portion protrudes relative to the connection portion is greater than the height of the fastener on the side of the connection portion close to the opening of the housing.

5. The battery distribution box according to any one of claims 1 to 4, wherein The heat dissipation cover plate includes a heat dissipation portion, the heat dissipation portion including a heat dissipation body with a liquid cooling flow channel provided therein, and a liquid inlet and a liquid outlet communicated with the liquid cooling flow channel; At least a part of the conductive connection member is in contact with the heat dissipation body.

6. The battery distribution box according to claim 5, wherein, The heat dissipation cover plate further includes a frame portion, the frame portion surrounding the outer periphery of the heat dissipation portion, and the frame portion is detachably connected to the housing.

7. The battery distribution box according to claim 6, wherein, The heat dissipation portion and the frame portion are integrally formed.

8. The battery distribution box according to claim 6 or 7, wherein, The heat dissipation portion is a liquid cooling plate, and the frame portion is configured to be injection-molded along the outer periphery of the liquid cooling plate.

9. The battery distribution box according to any one of claims 1 to 8, wherein, Further comprising: An insulating layer, located on a surface of the heat dissipation cover plate for contacting the conductive connection member.

10. The battery distribution box according to any one of claims 1 to 8, wherein, Further comprising: A heat conducting member, located between the heat dissipation cover plate and the conductive connection member for heat conduction.

11. The battery distribution box according to claim 10, wherein, The heat conducting member is made of an insulating and heat conducting material.

12. A battery, comprising A battery cell, and The battery distribution box according to any one of claims 1-11, the battery distribution box being electrically connected to the battery cell.

13. An electrical device, the electrical device including the battery according to claim 12, the battery being used to provide electrical energy.

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