Battery distribution box, battery and electric device

Abstract

The invention provides a battery distribution box, a battery and a power utilization device, and belongs to the field of batteries. The battery distribution box provided by the invention comprises a shell, an electrical assembly and a heat dissipation cover plate, an accommodating cavity with an opening is formed in the shell; the electrical assembly is arranged in the accommodating cavity and comprises a plurality of electrical elements and conductive connecting pieces connected with the electrical elements; the heat dissipation cover plate is connected with the shell to cover the opening, and at least part of the conductive connecting piece makes contact with the heat dissipation cover plate to achieve heat conduction. The conductive connecting piece is in contact with the heat dissipation cover plate, so that the connection mode of the conductive connecting piece and the cover plate with the heat dissipation function can be simplified, the extension length of the conductive connecting piece is saved, and the space utilization rate of the battery distribution box is improved.

Description

Technical Field

[0001] The present application relates to the technical field of batteries, and particularly to a battery distribution box, a battery, and an electrical device. Background Art

[0002] Energy conservation and emission reduction are the keys to the sustainable development of the automotive industry. Electric vehicles have become an important part of the sustainable development of the automotive industry due to their advantages of energy conservation and environmental protection. For electric vehicles, battery technology is an important factor related to their development.

[0003] 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 large amount of heat. Since most batteries are in a fully enclosed space, after the heat accumulates, it cannot be dissipated in time, which may burn out the battery distribution box or even cause a fire. Therefore, it is necessary to make improvements. Summary of the Invention

[0004] The present application aims to solve at least one of the technical problems existing in the background art. For this purpose, an object 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.

[0005] An embodiment of the first aspect of the present application provides a battery distribution box, which includes: a housing, an electrical component, and a heat dissipation cover plate; the housing forms a receiving cavity with an opening; the electrical component is disposed in the receiving cavity, the electrical component includes a plurality of electrical elements and a conductive connection member connected to the electrical elements; the heat dissipation cover plate is 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.

[0006] In the technical solution of the embodiment of the present application, by setting the cover plate as a heat dissipation cover plate and making at least a part of the conductive connection member in contact with the heat dissipation cover plate to achieve heat conduction, the connection method between the conductive connection member and the cover plate with a heat dissipation function can be simplified, the extension length of the conductive connection member can be saved, and the space utilization rate of the battery distribution box can be improved.

[0007] In some embodiments, the conductive connection member includes a connecting portion and a protruding portion. The connecting portion is electrically connected to the electrical element; the protruding portion is connected to the connecting portion, and the protruding portion protrudes toward the side where the opening of the housing is located relative to the connecting portion, and the protruding portion is in contact with the heat dissipation cover plate to achieve heat conduction. By providing the protruding portion, heat conduction connection can be achieved without additionally occupying the internal space of the battery distribution box, and the extension structure of the conductive connection member can be simplified.

[0008] In some embodiments, the connecting portion is connected to the connection terminal of the electrical element, and the connection terminal is located on the surface of the electrical element close to the opening of the housing. Setting the connection terminal on the surface of the electrical element close to the opening is more conducive to the installation of each component, especially the conductive connection member, and reduces the manufacturing and installation difficulty of the battery distribution box.

[0009] In some embodiments, the connecting portion and the connecting terminal are connected by a fastener, and the height by which the protruding portion protrudes relative to the connecting portion is greater than the height of the fastener on the side of the connecting portion close to the opening of the housing. By defining the height of the protruding portion, structural interference caused by the connection of the fastener can be avoided, and further, it can be ensured that the protruding portion contacts the heat dissipation cover plate, thereby improving the reliability of heat dissipation.

[0010] In some embodiments, the heat dissipation cover plate includes a heat dissipation portion, and the heat dissipation portion includes a heat dissipation body with a liquid cooling channel provided inside, and a liquid inlet and a liquid outlet communicated with the liquid cooling channel; at least a part of the conductive connecting member contacts the heat dissipation body. Setting the heat dissipation portion of the heat dissipation cover plate as a liquid cooling component can improve the heat dissipation and cooling effect, and the heat dissipation portion can also be communicated with the liquid cooling component of the battery, so that the manufacturing cost and control difficulty of the heat dissipation cover plate can be significantly reduced.

[0011] In some embodiments, the heat dissipation cover plate further includes a frame portion, the frame portion surrounds the outer periphery of the heat dissipation portion, and the frame portion is detachably connected to the housing. By providing the frame portion for supporting the heat dissipation portion and connecting to the housing, the structure of the heat dissipation portion can be simplified, thereby reducing the processing difficulty and saving the manufacturing cost.

[0012] 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 the assembly difficulty and improving the production efficiency.

[0013] In some embodiments, 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. By injection molding around the liquid cooling plate to obtain an integrated heat dissipation cover plate, a closer connection relationship can be formed between the heat dissipation portion and the frame portion, and without affecting the heat dissipation effect, the weight and manufacturing cost of the cover plate can be reduced, the structure of the cover plate can be simplified, and the production efficiency can be improved.

[0014] In some embodiments, the battery distribution box further includes an insulating layer, and the insulating layer is located on the surface of the heat dissipation cover plate on the side for contacting the conductive connecting member. By providing the insulating layer, when the conductive connecting member contacts the heat dissipation cover plate, only heat transfer can be achieved, the risk of electric leakage can be reduced, and the safety of the battery distribution box can be improved to a certain extent.

[0015] In some embodiments, the battery distribution box further includes a heat conducting member, and the heat conducting member is located between the heat dissipation cover plate and the conductive connecting member for heat conduction. By providing the heat conducting member, the contact area between the conductive connecting member and the heat dissipation cover plate can be increased, and the heat conduction efficiency between the conductive connecting member and the heat dissipation cover plate can be accelerated to a certain extent, thereby improving the heat dissipation performance.

[0016] In some embodiments, the heat conducting member is made of an insulating and heat conducting material. The heat conducting member itself has an insulating function, so that an additional insulating layer does not need to be provided, which can save processes or reduce components.

[0017] 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, and the battery distribution box is electrically connected to the battery cell.

[0018] 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 electric energy.

[0019] The above description is only an overview of the technical solution of the present application. In order to understand the technical means of the present application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present application more obvious and understandable, the specific embodiments of the present application are hereinafter specifically exemplified. Description of the Drawings

[0020] In the drawings, unless otherwise specified, the same reference numerals throughout the several views denote 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 accordance with the present application and should not be regarded as limiting the scope of the present application.

[0021] Figure 1 It is a schematic structural diagram of a vehicle according to some embodiments of the present application;

[0022] Figure 2 It is a schematic exploded view of a battery according to some embodiments of the present application;

[0023] Figure 3 It is a schematic exploded view of a battery distribution box according to some embodiments of the present application;

[0024] Figure 4 It is a schematic internal structure diagram of a battery distribution box housing according to some embodiments of the present application;

[0025] Figure 5 It is a schematic structural diagram of a heat dissipation cover plate of a battery distribution box according to some embodiments of the present application;

[0026] Figure 6 It is a schematic exploded view of a battery distribution box according to other embodiments of the present application.

[0027] Description of the Reference Numerals:

[0028] Vehicle 1000;

[0029] Battery 100, Controller 200, Motor 300;

[0030] Box 10, first part 11, second part 12;

[0031] Battery cell 20, battery distribution box 30, housing 310, electrical component 320, electrical element 321, conductive connection member 322, protrusion 3221, connection part 3222, heat dissipation cover plate 330, heat dissipation part 331, heat dissipation body 3311, liquid inlet 3312, liquid outlet 3313, frame part 322. Specific embodiments

[0032] The embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solutions of the present application more clearly, and therefore are only examples and cannot be used to limit the protection scope of the present application.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled 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" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion.

[0034] In the description of the embodiments of the present application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary-secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality" is more than two, unless otherwise specifically defined.

[0035] Referring to "embodiments" herein means that the specific features, structures or characteristics described in connection with the embodiments may be included in at least one embodiment of this application. The phrase appears in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0036] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after.

[0037] In the description of the embodiments of the present application, the term "a plurality" 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).

[0038] In the description of the embodiments of the present application, the orientation or positional relationship indicated by technical terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the embodiments of the present application.

[0039] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside 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 specific circumstances.

[0040] Currently, from the perspective of the development of the market situation, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power, and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, and electric vehicles, as well as in multiple fields such as military equipment and aerospace. With the continuous expansion of the application fields of power batteries, the market demand is also continuously increasing.

[0041] The battery distribution box is responsible for managing the distribution and power-off of the battery current. With the development of battery technology, the demand for the battery by the electrical device is continuously increasing, and the current that the battery distribution box needs to withstand is also getting larger and larger, resulting in a significant increase in heat. In the related art, a liquid cooling plate is provided at the bottom of the battery distribution box, and the conductive connection member in the matching box body is in contact with the liquid cooling plate for heat dissipation. Since the liquid cooling plate is at the bottom of the housing, the conductive connection member needs to be led down to the bottom of the housing to contact the liquid cooling plate, which increases the length of the conductive connection member, not only increasing the cost, but also occupying the internal space of the distribution box, resulting in waste of space, and increasing the difficulty of installation and manufacturing of the distribution box.

[0042] To solve the above problems, an embodiment of the present application provides a battery distribution box, which includes a housing, an electrical component, and a heat dissipation cover plate. The housing forms a receiving cavity with an opening; the electrical component is disposed in the receiving cavity, and the electrical component includes a plurality of electrical elements and a conductive connection member connected to the electrical elements; the heat dissipation cover plate is connected to the housing to cover the opening, and at least a part of the conductive connection member is in contact with the heat dissipation cover plate to achieve heat conduction. By replacing the cover plate with a heat dissipation cover plate and bringing the conductive connection member into contact with the heat dissipation cover plate, the extension length of the conductive connection member can be saved, the space utilization rate of the distribution box can be improved, the manufacturing cost can be saved, and the manufacturing difficulty can be reduced.

[0043] The battery cells disclosed in the embodiments of the present application can be but are not limited to being used in power-consuming devices such as vehicles, ships, or aircraft. The power system of the power-consuming device can be composed of the battery cells, batteries, etc. disclosed in the present application.

[0044] An embodiment of the present application provides a power-consuming device using a battery as a power source. The power-consuming device can be but is not limited to a mobile phone, a tablet computer, a laptop computer, an electric toy, an electric tool, a battery car, an electric vehicle, a ship, a spacecraft, etc. Among them, the electric toy can include a fixed or mobile electric toy, for example, a game console, an electric vehicle toy, an electric ship toy, an electric aircraft toy, etc., and the spacecraft can include an airplane, a rocket, a space shuttle, a spaceship, etc.

[0045] For the convenience of description in the following embodiments, a power-consuming device in an embodiment of the present application, a vehicle 1000, is taken as an example for description.

[0046] Please refer to Figure 1 , Figure 1 which is a schematic structural diagram of a 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, an extended-range vehicle, etc. A battery 100 is disposed inside the vehicle 1000, and the battery 100 can be disposed at the bottom, head, or tail of the vehicle 1000. The battery 100 can be used for power supply of the vehicle 1000. For example, the battery 100 can be used as an operating power source of the vehicle 1000. The vehicle 1000 may further include a controller 200 and a motor 300. The controller 200 is used to control the battery 100 to supply power to the motor 300. For example, it is used for the operating power requirements of the vehicle 1000 during startup, navigation, and driving.

[0047] In some embodiments of the present application, the battery 100 can not only be used as an operating power source of the vehicle 1000, but also as a driving power source of the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0048] Please refer to Figure 2 , Figure 2Exploded structural view of a battery provided by some embodiments of the present application. The battery 100 includes a box body 10 and battery cells 20, and the battery cells 20 are accommodated in the box body 10. Among them, the box body 10 is used to provide an accommodation space for the battery cells 20, and the box body 10 can adopt various structures. In some embodiments, the box body 10 may include a first part 11 and a second part 12, the first part 11 and the second part 12 are covered with each other, and the first part 11 and the second part 12 jointly define an accommodation space for accommodating the battery cells 20. The second part 12 may be a hollow structure with one end open, and the first part 11 may be a plate-like structure. The first part 11 covers the open side of the second part 12 so that the first part 11 and the second part 12 jointly define an accommodation space; the first part 11 and the second part 12 may also both be hollow structures with one side open, and the open side of the first part 11 covers the open side of the second part 12. Of course, the box body 10 formed by the first part 11 and the second part 12 can be of various shapes, such as a cylinder, a cuboid, etc.

[0049] In the battery 100, there may be multiple battery cells 20, and the multiple battery cells 20 can be connected in series, in parallel, or in a mixed connection. A mixed connection means that there are both series and parallel connections among the multiple battery cells 20. The multiple battery cells 20 can be directly connected in series, in parallel, or in a mixed connection together, and then the whole formed by the multiple battery cells 20 is accommodated in the box body 10; of course, the battery 100 can also be that multiple battery cells 20 are first connected in series, in parallel, or in a mixed connection to form a battery module form, and then multiple battery modules are connected in series, in parallel, or in a mixed connection to form a whole and are accommodated in the box body 10. The battery 100 may further include other structures. For example, the battery 100 may further include a busbar component for realizing electrical connection among the multiple battery cells 20, and a battery cooperation box connected to the busbar component.

[0050] Among them, each battery cell 20 can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 20 can be in the shape of a cylinder, a flat body, a cuboid, or other shapes, etc.

[0051] Please refer to Figure 3 and Figure 4 , Figure 3 Exploded structural view of a battery distribution box provided by some embodiments of the present application, Figure 4 Structural view inside the housing of a battery distribution box provided by some embodiments of the present application.

[0052] An embodiment of the present application provides a battery distribution box 30, which includes a housing 310, an electrical component 320, and a heat dissipation cover plate 330. The housing 310 forms a receiving cavity with an opening; the electrical component 320 is disposed in the receiving cavity, and the electrical component 320 includes a plurality of electrical elements 321 and a conductive connecting member 322 connected to the electrical element 321; the heat dissipation cover plate 330 is connected to the housing 310 to cover the opening, and at least a part of the conductive connecting member 322 is in contact with the heat dissipation cover plate 330 to achieve heat conduction.

[0053] The housing 310 may be a square housing with an opening or a housing of other shapes, and a receiving cavity is formed inside. The electrical component 320 includes various electrical elements arranged in the battery distribution box 30, such as relays, fuses, etc. The electrical elements may be fixedly connected to the bottom or side wall of the housing 310. The conductive connecting member 322 is a conductive member for connecting different electrical elements or connecting the electrical elements in the battery distribution box 30 to the outside. The conductive connecting member 322 may be made of conductive metal, such as copper.

[0054] The heat dissipation cover plate 330 is a cover plate with a heat dissipation function and can cover the opening of the housing. The heat dissipation cover plate 330 may be a cover plate with a heat dissipation function, such as a heat dissipation member including air cooling or liquid cooling, or may be a structure or coating with a heat dissipation function, which will not be listed one by one here.

[0055] At least a part of the conductive connecting member 322 is in contact with the heat dissipation cover plate 330. For example, the conductive connecting member 322 is in contact with the heat dissipation cover plate 330 in a butting manner. The heat dissipation cover plate 330 is arranged on the top of the battery distribution box 30. Compared with arranging a heat dissipation component at the bottom of the housing, the conductive connecting member 322 does not need to extend to the bottom of the housing, thereby saving the length of the conductive connecting member. Moreover, the heat dissipation cover plate 330 is located on the top of the conductive connecting member 322, making it easier to achieve the contact between the two. The heat dissipation cover plate 330 itself has good heat dissipation performance and can dissipate the heat transferred by the conductive connecting member 322 in time without occupying too much internal space of the battery distribution box 30.

[0056] By setting the cover plate as a heat dissipation cover plate and making the conductive connecting member 322 in contact with the heat dissipation cover plate, the connection method between the conductive connecting member 322 and the cover plate with a heat dissipation function can be simplified, the extension length of the conductive connecting member can be saved, and the space utilization rate of the battery distribution box 30 can be improved.

[0057] According to some embodiments of the present application, such as Figure 3 and Figure 4As shown, the conductive connecting member 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 3222 is connected to the connecting portion 3221, and the protruding portion 3222 protrudes relative to the connecting portion 3221 toward the side where the opening of the housing 310 is located. The protruding portion 3222 contacts the heat dissipation cover plate 330 to achieve heat conduction.

[0058] The connecting portion 3221 can be located at the end of the conductive connecting member 322. The protruding portion 3222 can be located between two connecting portions 3221 and protrude relative to the connecting portion toward the opening of the housing, that is, protrude toward the side where the heat dissipation cover plate 330 is located.

[0059] Due to the need for connection and arrangement of electrical components, when the heat dissipation cover plate 330 is covered on the housing 310, a certain gap needs to be reserved between the lower surface of the heat dissipation cover plate 330 and the upper surface of the electrical component 321 to prevent interference. The height of the protrusion of the protruding portion 3222 is adapted to this gap, so that the protruding portion 3222 can contact the inner surface of the heat dissipation cover plate 330 when the heat dissipation cover plate 330 is covered on the housing 310, so that the heat generated by excessive current can be conducted to the heat dissipation cover plate 330 in time.

[0060] By providing the protruding portion 3222, heat conduction connection can be achieved without additionally occupying the internal space of the battery distribution box 30, and the extension structure of the conductive connecting member 322 can be simplified.

[0061] According to some embodiments of the present application, as Figure 3 and Figure 4 shown, the connecting portion 3221 is connected to the connection terminal of the electrical component 321, and the connection terminal is located on the surface of the electrical component 321 close to the opening of the housing 310.

[0062] The electrical component 321 can be directly or indirectly connected to the bottom surface or side surface of the housing 310 to achieve stable arrangement. The connection terminals of the electrical component 321 can be arranged on the surface close to the opening of the housing 310. For example, the connection terminals are located on the upper surfaces of the respective electrical components 321. In this way, when installing, the electrical component 321 can be installed and positioned first, then electrically connected by the conductive connecting member 322, and finally the heat dissipation cover plate 330 is covered.

[0063] Arranging the connection terminals on the surface of the electrical component 321 close to the opening is more beneficial to the installation of each component, especially the conductive connecting member 322, and reduces the manufacturing and installation difficulty of the battery distribution box 30.

[0064] According to some embodiments of the present application, as Figure 3 and Figure 4As shown, the connecting portion 3221 is connected to the connecting terminal by a fastener 323, and the height by which the protruding portion 3222 protrudes relative to the connecting portion 3221 is greater than the height of the fastener 323 on the opening side of the connecting portion 3221 close to the housing 310.

[0065] The fastener 323 can be various types of fasteners, such as various bolts or screws. In some examples, the fastener 323 can be a hexagon bolt. After the hexagon bolt is screwed into the threaded hole, there will still be a head on the opening side of the connecting portion 3221 of the conductive connector 322. The height by which the protruding portion 3222 protrudes relative to the connecting portion should be greater than the height of the top of the hexagon bolt relative to the plane where the upper surface of the connecting portion is located.

[0066] In this embodiment, by limiting the height of the protruding portion 3222, structural interference caused by fastener connection can be avoided, and thus reliable contact between the protruding portion 3222 and the heat dissipation cover 330 can be achieved, improving the reliability of heat dissipation.

[0067] Please refer to Figure 5 , Figure 5 which is a schematic structural diagram of the heat dissipation cover of the battery distribution box according to some embodiments of the present application.

[0068] According to some embodiments of the present application, as Figure 5 shown, 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 flow channel provided inside, and a liquid inlet 3312 and a liquid outlet 3313 communicated with the liquid cooling flow channel; at least part of the conductive connector 322 is in contact with the heat dissipation body 3311.

[0069] The heat dissipation portion 331 can be a liquid cooling component, such as a water cooling plate. One or more liquid cooling flow channels can be provided inside the heat dissipation body 3311 to allow the cooling liquid to flow through. The liquid inlet 3312 and the liquid outlet 3313 can be respectively located at both ends of the heat dissipation body 3311 and communicated with the liquid cooling flow channel respectively, so that the cooling liquid can enter and exit. In some embodiments, the liquid inlet 3312 and the liquid outlet 3313 of the heat dissipation portion 331 can be communicated with the liquid cooling component of the battery, and even the liquid cooling component of the battery and the heat dissipation portion of the battery distribution box can be controlled through the battery management system.

[0070] Setting the heat dissipation portion of the heat dissipation cover as a liquid cooling component can improve the heat dissipation and cooling effect, and the heat dissipation portion can also be communicated with the liquid cooling component of the battery, which can significantly reduce the manufacturing cost and control difficulty of the heat dissipation cover.

[0071] According to some embodiments of the present application, as Figure 5 shown, the heat dissipation cover 330 further includes a frame portion 332. The frame portion 332 surrounds the outer periphery of the heat dissipation portion 331, and the frame portion 332 is detachably connected to the housing 310.

[0072] The frame part 332 is a frame-shaped member surrounding the heat dissipation part 331, and can play a supporting role for the heat dissipation part 331. The material of the frame part 332 can be the same as or different from that of the housing 310.

[0073] The heat dissipation cover plate 330 needs to be covered and connected with the housing 310, and the corresponding connection structure can be arranged on the frame part 332. In some embodiments, the frame part 332 is provided with a corresponding locking structure on the housing 310, so that the frame part 332 and the housing 310 are connected in a detachable manner. The locking structure can be a snap connection structure or a threaded connection structure.

[0074] By providing the frame part 332 for supporting the heat dissipation part 331 and connecting with the housing 310, the structure of the heat dissipation part 331 can be simplified, thereby reducing the processing difficulty and saving the manufacturing cost.

[0075] According to some embodiments of the present application, as Figure 5 shown, the heat dissipation part 331 and the frame part 332 are integrally formed.

[0076] The frame part 332 can be made of the same material as the heat dissipation part 331, and through an integral molding manufacturing process, the heat dissipation part 331 with an internal flow channel and the frame part 332 with a locking structure are obtained.

[0077] By integrally forming the heat dissipation part 331 and the frame part 332, the number of parts can be reduced, thereby reducing the assembly difficulty and improving the production efficiency.

[0078] According to some embodiments of the present application, as Figure 5 shown, the heat dissipation part 331 is a liquid cooling plate, and the frame part 332 is configured to be injection molded along the outer periphery of the liquid cooling plate.

[0079] In order to ensure the cooling effect, the material of the liquid cooling plate is made of metal, such as aluminum, while the frame part 332, as a support and connection structure, does not need to be made of metal, which will cause an increase in cost and weight. In some embodiments, the frame part 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 outer periphery of the liquid cooling plate to obtain an integrated heat dissipation cover plate with a liquid cooling plate in the center part and an injection molded frame part 332 on the outer periphery. In some embodiments, the material and structure form of the liquid cooling plate can be the same as those of the liquid cooling plate used in the battery, which can reduce the manufacturing cost.

[0080] By injection molding around the liquid cooling plate to obtain an integrated heat dissipation cover plate, a closer connection relationship can be formed between the heat dissipation part and the frame part, and without affecting the heat dissipation effect, the weight and manufacturing cost of the cover plate can be reduced, the structure of the cover plate can be simplified, and the production efficiency can be improved.

[0081] According to some embodiments of the present application, the battery distribution box 330 further includes an insulating layer (not shown in the figure), and the insulating layer is located on the surface of the heat dissipation cover plate 330 on the side for contacting the conductive connection member.

[0082] The insulating layer may be a layer of insulating material formed on the surface of the heat dissipation cover plate 330 facing the accommodation cavity by spraying or pasting, so that no electric leakage occurs when the conductive connection member 322 contacts the heat dissipation cover plate 330. In some embodiments, the insulating layer may be a film layer directly sprayed on the lower surface of the liquid cooling plate serving as the heat dissipation portion 331.

[0083] By providing the insulating layer, when the conductive connection member contacts the heat dissipation cover plate, only heat transfer can be achieved, reducing the risk of electric leakage and improving the safety of the battery distribution box 30 to a certain extent.

[0084] Please refer to Figure 6 , Figure 6 which is an exploded structural schematic diagram of the battery distribution box according to some other embodiments of the present application.

[0085] According to some embodiments of the present application, the battery distribution box 30 further includes a heat conducting member 340, and the heat conducting member 340 is located between the heat dissipation cover plate 330 and the conductive connection member 322 for heat conduction.

[0086] The heat conducting member 340 may be in a flat plate shape and be attached to the surface of the heat dissipation cover plate 330 on the side for contacting the conductive connection member 322. The projected area of the heat conducting member 340 on the heat dissipation cover plate 330 is much larger than the contact area between the conductive connection member 322 and the heat dissipation cover plate 330, so that a large amount of heat on the conductive connection member 322 can be dispersed and conducted to the heat dissipation portion 331 for heat dissipation. In some embodiments, the heat conducting member 340 may be made of an elastic heat conducting material, so that it can play a buffering role when the conductive connection member 322 contacts the heat dissipation cover plate 330, which is more conducive to maintaining the contact state between the conductive connection member 322 and the heat dissipation cover plate 330 and also facilitates the control of the mating dimensions of the two. For example, the mating dimensions of the two can be designed as an interference fit. The heat conducting member 340 may be made of a material with a relatively high heat conduction coefficient, such as metals like copper and aluminum, or graphite and silica gel.

[0087] In some embodiments, the heat conducting member 340 may be a film layer formed on the surface of the heat dissipation cover plate 330 for contacting the conductive connection member 322 by spraying or coating. For example, an insulating layer and a heat conducting layer may be sequentially provided on the surface of the heat dissipation cover plate 330 for contacting the conductive connection member 322.

[0088] By providing the heat conducting member 340, the contact area between the conductive connecting member 322 and the heat dissipation cover plate 330 can be increased, and to a certain extent, the heat conduction efficiency between the conductive connecting member 322 and the heat dissipation cover plate 330 can be accelerated, thereby improving the heat dissipation performance.

[0089] According to some embodiments of the present application, the heat conducting member 340 is made of a heat conducting and insulating material.

[0090] The heat conducting member 340 itself is made of a material with excellent heat conduction and insulation properties, such as alumina ceramics, magnesia ceramics, silicone rubber, etc. The heat conducting member 340 can be a heat conducting and insulating film layer formed on the surface of the heat dissipation cover plate 330 for contacting the conductive connecting member 322 by spraying or coating.

[0091] The heat conducting member 340 itself has an insulating function, so that there is no need to additionally provide an insulating layer, which can save processes or reduce components.

[0092] According to some embodiments of the present application, a battery is further provided, including battery cells, and the battery distribution box 30 described in the above embodiments, and the battery distribution box 30 is electrically connected to the battery cells.

[0093] According to some embodiments of the present application, an electrical device is further provided, and the electrical device includes the battery described in the above embodiments, and the battery is used to provide electrical energy.

[0094] The technical solution of the present application will be further described below with a specific embodiment.

[0095] As Figures 3 - 6 shown, the battery distribution box 30 includes a housing 310, an electrical component 320, and a heat dissipation cover plate 330. The housing 310 forms a receiving cavity with an opening; the electrical component 320 is disposed in the receiving cavity. The electrical component 320 includes a plurality of electrical elements 321, and a conductive connecting member 322 connected to the electrical element 321; the heat dissipation cover plate 330 is connected to the housing 310 to cover the opening.

[0096] The conductive connecting member 322 includes a connecting portion 3222 and a protruding portion 3221. The connecting portion 3222 is electrically connected to the electrical element 321; the protruding portion 3222 is connected to the connecting portion 3221, and the protruding portion 3222 protrudes toward the side where the opening is located with respect to the connecting portion 3221. The connecting portion 3221 is connected to the connection terminal of the electrical element 321 through a fastener 323. The connection terminal is located on the surface of the electrical element 321 close to the opening. The height by which the protruding portion 3222 protrudes with respect to the connecting portion 3221 is greater than the height of the fastener 323 on the side of the connecting portion 3221 close to the opening.

[0097] The heat dissipation cover plate 330 includes a heat dissipation part 331 and a frame part 332; the frame part 332 surrounds the outer periphery of the heat dissipation part 331. The heat dissipation part 331 is a liquid cooling plate, and the frame part 332 is configured to be injection molded along the outer periphery of the liquid cooling plate.

[0098] The heat dissipation part 331 includes a heat dissipation body 3311 with a liquid cooling channel inside, and a liquid inlet 3312 and a liquid outlet 3313 communicated with the liquid cooling channel; the protruding part 3222 of the conductive connecting piece 322 contacts the heat dissipation body 3311.

[0099] The surface of the heat dissipation cover plate 330 for contacting the conductive connecting piece 322 is sequentially provided with an insulating layer and a heat conductive layer. In some embodiments, the surface of the heat dissipation cover plate 330 for contacting the conductive connecting piece 322 is provided with a heat conductive insulating layer.

[0100] 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 foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; 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 covered within the scope of the claims and the description of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery distribution box, characterized in that, 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 connecting 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 connecting member is in contact with the heat dissipation cover plate to achieve heat conduction.

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

3. The battery power distribution box according to claim 2, characterized in that The connecting 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, characterized in that, The connecting portion and the connection terminal are connected by a fastener, and the height by which the protruding portion protrudes relative to the connecting portion is greater than the height of the fastener on the side of the connecting portion close to the opening of the housing.

5. The battery distribution box according to any one of claims 1 to 4, characterized in that 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 communicating with the liquid cooling flow channel; At least a part of the conductive connecting member is in contact with the heat dissipation body.

6. The battery power distribution box according to claim 5, characterized in that, 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, characterized in that, 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, characterized in that Further comprising: An insulating layer, located on a surface of the heat dissipation cover plate for contacting the conductive connecting member.

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

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

12. A battery, characterized in that, Including A battery cell, and A battery distribution box as described in any one of claims 1-11, the battery distribution box being electrically connected to the battery cell.

13. An electrical device, characterized in that, The electrical device includes the battery as described in claim 12, and the battery is used to provide electrical energy.

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