Distribution box assembly, battery pack and electric equipment

Abstract

The utility model provides a power distribution box assembly, a battery pack and electric equipment, relates to the technical field of automobiles, and is used for solving the problems that in the related technology, when a battery pack is in a working state, the heat production amount of a power distribution box is large, and the heat safety of the power distribution box is likely to occur, the power distribution box assembly comprises a frame, a power distribution module and at least one heat conduction piece, at least part of the power distribution module is located in the containing cavity, at least one heat conduction piece is located in the containing cavity, and the heat conduction pieces are in heat conduction with the power distribution module and the frame. The heat conduction piece is located between the power distribution module and the frame and is in heat conduction with the power distribution module and the frame, heat generated by the power distribution module is firstly transmitted to the heat conduction piece, then the heat of the heat conduction piece is transmitted to the frame, and finally the heat is dissipated into air through the frame, namely the heat generated by the power distribution module is finally dissipated into the air through the heat conduction piece and the frame in sequence. And the thermal safety problem of the power distribution module is not easy to occur.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobiles, in particular to a distribution box assembly, a battery pack and an electrical equipment. BACKGROUND

[0002] The distribution box is an important component of the battery pack, and can be used to realize functions such as voltage detection, current management and safety disconnection of the battery cell module in the battery pack. With the continuous enrichment of vehicle functions, the power and heat production of the distribution box are increasing. When the battery pack is in a working state, the distribution box produces a large amount of heat, and the distribution box is prone to thermal safety problems. CONTENT OF THE UTILITY MODEL

[0003] In view of the above problems, the present application provides a distribution box assembly, a battery pack and an electrical equipment to solve the problem that the distribution box produces a large amount of heat when the battery pack is in a working state in the related art.

[0004] In order to achieve the above purpose, the embodiments of the present application provide the following technical solutions:

[0005] In the first aspect, the present application provides a distribution box assembly, comprising:

[0006] a frame, the frame being provided with a receiving cavity;

[0007] a power distribution module, at least part of the power distribution module being located in the receiving cavity;

[0008] at least one heat conduction member, the heat conduction member being located in the receiving cavity, the heat conduction member being in thermal conduction with the power distribution module and the frame.

[0009] In some embodiments of the present application, the power distribution module comprises a main body and a mounting bracket, the mounting bracket being mounted on the outer side of the main body, a first part of the mounting bracket abutting against the outer surface of the main body of the power distribution module, and a second part of the mounting bracket abutting against the heat conduction member.

[0010] In some embodiments of the present application, the second part of the mounting bracket is provided with a mounting cavity, a first end of the mounting cavity facing the main body of the power distribution module, and a second end of the mounting cavity facing the frame.

[0011] At least part of the heat conduction member is arranged in the mounting cavity, and the heat conduction member abuts against the inner wall of the mounting cavity.

[0012] In some embodiments of the present application, the mounting cavity comprises a first chamber, and the first chamber is close to the main body of the power distribution module.

[0013] The heat conduction member comprises a first heat conduction part, and the first heat conduction part is located in the first chamber.

[0014] In some embodiments of the present application, the mounting cavity comprises a second chamber in communication with the first chamber, and the second chamber is close to the frame.

[0015] The heat-conducting member includes a second heat-conducting part connected to the first heat-conducting part, and the second heat-conducting part is located in the second cavity.

[0016] In some embodiments of the present application, the cross-sectional area of the first heat-conducting part is greater than the cross-sectional area of the second heat-conducting part, in a plane perpendicular to the arrangement direction of the first heat-conducting part and the second heat-conducting part.

[0017] In some embodiments of the present application, the heat-conducting member is a split heat-conducting member, and the split heat-conducting member includes at least one heat-conducting unit.

[0018] In some embodiments of the present application, the power distribution module is fixed to the frame through the heat-conducting member.

[0019] In some embodiments of the present application, the heat-conducting member is an insulating heat-conducting member, and the insulating heat-conducting member is in insulating contact with the power distribution module.

[0020] In some embodiments of the present application, the heat-conducting member is in interference fit with the mounting bracket.

[0021] In some embodiments of the present application, the heat-conducting member is arranged in interference between the power distribution module and the frame.

[0022] In some embodiments of the present application, an end of the at least one heat-conducting member away from the power distribution module protrudes out of the mounting cavity and abuts against the frame.

[0023] In some embodiments of the present application, the at least one heat-conducting member includes an elastic shell and a heat-conducting filler, and the heat-conducting filler is filled in the elastic shell.

[0024] In some embodiments of the present application, the frame includes a housing and a sealing cover;

[0025] The housing surrounds a receiving cavity with an opening, and the sealing cover closes the opening; at least one of the housing and the sealing cover is in contact with the heat-conducting member.

[0026] In some embodiments of the present application, the at least one heat-conducting member includes a first heat-conducting member;

[0027] The power distribution module includes a connecting member; the connecting member is in contact with the first heat-conducting member, and an end of the first heat-conducting member away from the connecting member is in contact with the frame.

[0028] In some embodiments of the present application, the at least one heat-conducting member includes a second heat-conducting member;

[0029] The power distribution module includes a functional module, the functional module is in contact with the second heat-conducting member, and an end of the second heat-conducting member away from the functional module is in contact with the frame.

[0030] In a second aspect, the embodiments of the present application provide a battery pack including a power distribution box assembly.

[0031] In some embodiments of the present application, the battery pack comprises a shell, and the shell is used to form at least part of the distribution box assembly.

[0032] In a third aspect, the embodiments of the present application provide a power-using device, comprising a power-using apparatus and a battery pack, and the battery pack is used to provide electric energy for the power-using apparatus.

[0033] The embodiments of the present application provide a distribution box assembly, a battery pack and a power-using device. The distribution box assembly comprises a frame, a distribution module and at least one heat-conducting member. The frame is provided with a receiving cavity. At least part of the distribution module is located in the receiving cavity. The at least one heat-conducting member is located in the receiving cavity. The heat-conducting member is in contact with the distribution module and the frame. The heat-conducting member is located between the distribution module and the frame and is in thermal conduction with the distribution module and the frame. The heat generated by the distribution module is first transmitted to the heat-conducting member, and then the heat of the heat-conducting member is transmitted to the frame. Finally, the heat is dissipated to the air through the frame. That is, the heat generated by the distribution module is sequentially dissipated to the air through the heat-conducting member and the frame, so that the distribution module is less likely to have a thermal safety problem.

[0034] In addition to the technical problems solved by the embodiments of the present application described above, the technical features constituting the technical solutions and the beneficial effects brought by these technical features, the other technical problems solved by the distribution box assembly, the battery pack and the power-using device provided by the embodiments of the present application, the other technical features included in the technical solutions and the beneficial effects brought by these technical features will be further described in detail in the specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creating any creative labor.

[0036] Figure 1 An exploded structural schematic view of the distribution box assembly provided by the embodiments of the present application;

[0037] Figure 2 A first structural schematic view of the distribution module of the distribution box assembly provided by the embodiments of the present application;

[0038] Figure 3 A second structural schematic view of the distribution module of the distribution box assembly provided by the embodiments of the present application;

[0039] Figure 4 A structural schematic view of the heat-conducting member of the distribution box assembly provided by the embodiments of the present application;

[0040] Figure 5A sectional view structural schematic diagram of a distribution box assembly provided by an embodiment of the present application;

[0041] Figure 6 A sectional view structural schematic diagram of a distribution box assembly provided by an embodiment of the present application; Figure 5 A sectional view structural schematic diagram of a distribution box assembly provided by an embodiment of the present application;

[0042] Figure 7 A sectional view structural schematic diagram of a distribution box assembly provided by an embodiment of the present application;

[0043] Figure 8 A sectional view structural schematic diagram of a distribution box assembly provided by an embodiment of the present application;

[0044] Figure 9 A sectional view structural schematic diagram of a distribution box assembly provided by an embodiment of the present application;

[0045] Reference signs:

[0046] 100 - frame;

[0047] 110 - shell; 111 - accommodating cavity;

[0048] 120 - sealing cover;

[0049] 200 - distribution module;

[0050] 210 - main body; 220 - connecting piece; 230 - functional module;

[0051] 240 - mounting bracket; 241 - plastic shell; 242 - plastic base;

[0052] 250 - relay;

[0053] 300 - heat conduction piece; 301 - heat conduction monomer;

[0054] 310 - first heat conduction piece; 320 - second heat conduction piece;

[0055] 311 - first heat conduction part; 312 - second heat conduction part;

[0056] A - first surface; B1 - second surface; B2 - third surface; C - fourth surface. DETAILED DESCRIPTION

[0057] In the related art, the distribution box is an important component of the battery pack, which can be used to realize functions such as voltage detection, current management and safety disconnection of the battery cell module in the battery pack. With the proposal of the super-charging concept, the high-power charging and discharging application of the vehicle, the continuous enrichment of the functions of the vehicle and the improvement of the integration, the power and heat production of the distribution box are continuously increasing. When the battery pack is in a working state, the distribution box produces a large amount of heat, and the distribution box is prone to overheating, which may cause damage or thermal deformation of the distribution box, and the distribution box is prone to thermal safety problems. The distribution structure in the related art is mainly through the copper bar in the loop for heat dissipation, which can still meet the requirements of the traditional driving conditions. However, the demand for super-charging is becoming higher and higher, and it also needs to meet the high-power and high-current requirements of the race track conditions, and the traditional distribution box structure cannot meet the increasingly stringent working condition requirements.

[0058] Therefore, the present application provides a distribution box assembly, a battery pack and an electric device. The distribution box assembly comprises a frame, a distribution module and at least one heat-conducting member. The frame is provided with a receiving cavity. At least part of the distribution module is located in the receiving cavity. The at least one heat-conducting member is located in the receiving cavity. The heat-conducting member is in contact with the distribution module and the frame. The heat-conducting member is in thermal conduction with the distribution module and the frame. The heat generated by the distribution module is first transmitted to the heat-conducting member, and then the heat of the heat-conducting member is transmitted to the frame. Finally, the heat is dissipated to the air through the frame. That is, the heat generated by the distribution module is sequentially dissipated to the air through the heat-conducting member and the frame, so that the distribution module is less likely to have thermal safety problems.

[0059] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the present application.

[0060] Please refer to Figure 1 The embodiments of the present application provide a distribution box assembly, which comprises a frame 100, a distribution module 200 and at least one heat-conducting member 300. The frame 100 is provided with a receiving cavity 111, and at least part of the distribution module 200 is located in the receiving cavity 111. Specifically, the frame 100 is a hollow structure, and the frame 100 is fixedly connected with the distribution module 200. For example, the frame 100 and the distribution module 200 can be fixed by bolt connection or clamping.

[0061] In some embodiments of the present application, the heat conduction member 300 is located in the accommodating cavity 111, the heat conduction member 300 is in thermal conduction with the power distribution module 200, and the heat conduction member 300 is in thermal conduction with the frame 100. Specifically, the heat conduction member 300 includes a first end and a second end, and the first end of the heat conduction member 300 is arranged opposite to the second end of the heat conduction member 300. The first end of the heat conduction member 300 is in abutment with the power distribution module 200, and the second end of the heat conduction member 300 is in contact with the frame 100.

[0062] Referring to Figures 5-8 In some embodiments of the present application, the power distribution module 200 includes a main body 210 and a mounting bracket 240, the mounting bracket 240 is mounted on the outer side of the main body 210, a first part of the mounting bracket 240 is in abutment with the outer surface of the main body 210 of the power distribution module 200, and a second part of the mounting bracket 240 is in abutment with the heat conduction member 300. Specifically, the mounting bracket 240 can extend along the length direction of the power distribution module 200. The second part of the mounting bracket 240 can be used to limit the heat conduction member 300. For example, the mounting bracket 240 can be a plastic shell on the power distribution module 200.

[0063] Referring to Figures 5-8 In some embodiments of the present application, the second part of the mounting bracket 240 is provided with a mounting cavity, a first end of the mounting cavity faces the main body 210 of the power distribution module 200, and a second end of the mounting cavity faces the frame 10. Specifically, the mounting cavity is a cavity structure with both ends open, and the first end of the mounting cavity is in communication with the second end of the mounting cavity.

[0064] In some embodiments of the present application, at least part of the heat conduction member 300 is arranged in the mounting cavity, and the heat conduction member 300 is in abutment with the inner wall of the mounting cavity. Specifically, a plurality of outer wall surfaces of the heat conduction member 300 are in abutment with the inner wall of the mounting cavity.

[0065] Referring to Figures 5-8 In some embodiments of the present application, the mounting cavity includes a first chamber and a second chamber in communication, the first chamber is close to the main body 210 of the power distribution module 200, and the second chamber is close to the frame 100. Specifically, the first chamber and the second chamber are used to accommodate at least part of the heat conduction member 300, and the inner walls of the first chamber and the second chamber are in abutment with the outer wall surfaces of the heat conduction member 300.

[0066] In some embodiments of the present application, the heat conduction member 300 includes a first heat conduction part 311 and a second heat conduction part 312 connected with each other, the first heat conduction part 311 is located in the first chamber, and the second heat conduction part 312 is located in the second chamber. Specifically, the first chamber is used to accommodate at least part of the first heat conduction part 311, and the inner wall of the first chamber is in abutment with the outer wall surface of the first heat conduction part 311; the second chamber is used to accommodate at least part of the second heat conduction part 312, and the inner wall of the second chamber is in abutment with the outer wall surface of the second heat conduction part 312.

[0067] Referring to Figure 4 In some embodiments of the present application, the first heat-conducting part 311 and the second heat-conducting part 312 can be integrally formed, which can simplify the production process, reduce the assembly time, improve the production efficiency, and enhance the integrity and durability of the heat-conducting part 300. Specifically, the length of the first heat-conducting part 311 and the second heat-conducting part 312 can be different along the arrangement direction of the first heat-conducting part 311 and the second heat-conducting part 312.

[0068] Referring to Figure 4 In some embodiments of the present application, the cross-sectional area of the first heat-conducting part 311 is greater than the cross-sectional area of the second heat-conducting part 312 in a plane perpendicular to the arrangement direction of the first heat-conducting part 311 and the second heat-conducting part 312. For example, the height of the first heat-conducting part 311 and the second heat-conducting part 312 is equal in a plane perpendicular to the arrangement direction of the first heat-conducting part 311 and the second heat-conducting part 312, and the cross-sectional area of the first heat-conducting part 311 is greater than the cross-sectional area of the second heat-conducting part 312.

[0069] In some embodiments of the present application, the first heat-conducting part 311 includes a second surface B1 and a third surface B2, and the second surface B1 and the third surface B2 face the second heat-conducting part 312. The second surface B1 and the third surface B2 of the first heat-conducting part 311 facing the second heat-conducting part 312 are in abutment with the mounting bracket 240, and the mounting bracket 240 can limit the movement of the heat-conducting part 300 away from the power distribution module 200.

[0070] Referring to Figure 9 In some embodiments of the present application, the heat-conducting part 300 is a split heat-conducting part, and the split heat-conducting part includes at least one heat-conducting monomer 301. The heat-conducting part 300 adopts a split structure, and multiple heat-conducting monomers 301 with the same structure are combined together. The number of heat-conducting monomers 301 can be adjusted according to the internal space structure of the power distribution box assembly to fully utilize the power distribution space and enhance the heat-conducting effect. For example, multiple heat-conducting monomers 301 can be directly stacked together or connected by adhesion or the like. In addition, the single heat-conducting monomer 301 structure can significantly reduce the cost.

[0071] In some embodiments of the present application, the power distribution module 200 is fixed to the frame 100 through the heat-conducting part 300. Specifically, the heat-conducting part 300 has not only a heat-conducting function but also a function of connecting the power distribution module 200 and the frame 100. For example, the heat-conducting part 300 can be a bolt, and an insulating gasket is arranged on the surface of the bolt in contact with the power distribution module 200 or the frame 100. The bolt can play a heat-conducting role and can also be used to connect the power distribution module 200 and the frame 100.

[0072] In some embodiments of the present application, the heat-conducting member 300 can be connected to the power distribution module 200 and the frame 100 by bolts. For example, the bolts can pass through the frame 100, the heat-conducting member 300 and the power distribution module 200 in sequence to connect the heat-conducting member 300 to the power distribution module 200 and the frame 100, and the surfaces of the bolts in contact with the power distribution module 200 or the frame 100 are provided with insulating gaskets.

[0073] Referring to Figures 5-8 In some embodiments of the present application, the heat-conducting member 300 is provided as an insulating heat-conducting member, and the insulating heat-conducting member 300 is in insulating contact with the power distribution module 200. The heat-conducting member 300 is in insulating contact with the frame 100.

[0074] Referring to Figures 5-8 In some embodiments of the present application, the heat-conducting member 300 is in interference fit with the mounting bracket 240. For example, the outer wall surface of the heat-conducting member 300 presses the inner wall surface of the mounting cavity, and the heat-conducting member 300 applies pressing force to the mounting bracket 240 by pressing the inner wall surface of the mounting cavity. Specifically, the outer wall surface of the first heat-conducting part 311 presses the inner wall surface of the first cavity, the outer wall surface of the second heat-conducting part 312 presses the inner wall surface of the second cavity, and the first heat-conducting part 311 and the second heat-conducting part 312 apply pressing force to the mounting bracket 240 by pressing the inner wall surface of the first cavity and the inner wall surface of the second cavity, respectively.

[0075] Referring to Figures 4-8 In some embodiments of the present application, the heat-conducting member 300 is provided in interference between the power distribution module 200 and the frame 100. Specifically, the first heat-conducting part 311 of the heat-conducting member 300 includes the fourth surface C, the second heat-conducting part 312 of the heat-conducting member 300 includes the first surface A, the heat-conducting member 300 applies pressing force to the power distribution module 200 through the fourth surface C, and the heat-conducting member 300 applies pressing force to the frame 100 through the first surface A.

[0076] In some embodiments of the present application, at least one heat-conducting member 300 has one end extending out of the mounting cavity and abutting against the frame 100 away from the power distribution module 200.

[0077] In some embodiments of the present application, at least one heat-conducting member 300 includes an elastic shell and a heat-conducting filler, and the heat-conducting filler is filled in the elastic shell. Specifically, the elastic shell can be a polysiloxane elastomer, and the heat-conducting filler can be at least one of aluminum oxide, magnesium oxide, zinc oxide, aluminum nitride, boron nitride and silicon carbide.

[0078] Referring to Figure 1 In some embodiments of the present application, the frame 100 includes a housing 110 and a sealing cover 120. The housing 110 and the sealing cover 120 are detachably connected. Specifically, the housing 110 and the sealing cover 120 can be connected by bolt connection or clamping.

[0079] In some embodiments of this application, the housing 110 forms a receiving cavity 111 with an opening, and the sealing cover 120 closes the opening. The power distribution module 200 can enter the receiving cavity 111 through the opening, the receiving cavity 111 is used to accommodate the power distribution module 200, and the sealing cover 120 encapsulates the power distribution module 200 within the housing 110 by closing the opening.

[0080] In some embodiments of this application, at least one of the housing 110 and the sealing cover 120 is in contact with the heat-conducting element 300. For example, the housing 110 may be in contact with at least one heat-conducting element 300 to transfer heat from the power distribution module 200 to the housing 110 via the heat-conducting element 300, and then dissipate heat through the housing 110; the sealing cover 120 may be in contact with at least one heat-conducting element 300 to transfer heat from the power distribution module 200 to the sealing cover 120 via the heat-conducting element 300, and then dissipate heat through the sealing cover 120; or both the housing 110 and the sealing cover 120 may be in contact with the heat-conducting elements 300 to transfer heat from the power distribution module 200 to the housing 110 and the sealing cover 120 via multiple heat-conducting elements 300, and then dissipate heat simultaneously through the housing 110 and the sealing cover 120.

[0081] Please see Figure 2 and Figures 6-8 In some embodiments of this application, the main body 210 of the power distribution module 200 includes a connector 220, which is located inside the main body 210 to facilitate heat dissipation. For example, the connector 220 can be a copper busbar or other connecting device.

[0082] In some embodiments of this application, the main body 210 of the power distribution module 200 includes a relay 250, and the mounting bracket 240 includes a plastic shell 241 and a plastic base 242. The relay 250 is fixed to the plastic base 242 by bolts. A copper busbar is connected to the relay 250 by bolts. A heat-conducting component 300 is installed in the mounting cavity on the plastic shell 241. The plastic shell 241 is snapped onto the plastic base 242, and the plastic shell 241 and the plastic base 242 are fixed by snaps. Due to the compression of the plastic shell 241, the heat-conducting component 300 is tightly attached to the surface of the copper busbar, ensuring heat conduction. The entire main circuit of the power distribution module 200 connects the various components through the copper busbar and fixing bolts to form a complete high-voltage circuit.

[0083] Please see Figure 2In some embodiments of the present application, the at least one heat-conducting member 300 includes a first heat-conducting member 310. The connecting member 220 is in contact with the first heat-conducting member 310, and an end of the first heat-conducting member 310 away from the connecting member 220 is in contact with the frame 100. Specifically, the fourth surface C of the first heat-conducting member 310 is in contact with the connecting member 220, and the first surface A of the first heat-conducting member 310 is in contact with the sealing cover 120 of the frame 100. The first heat-conducting member 310 can be a split heat-conducting member, and the first heat-conducting member 310 can include one or more heat-conducting units 301.

[0084] Referring to Figures 5-8 In some embodiments of the present application, the main body 210 of the power distribution module 200 includes a functional module 230. For example, the functional module 230 can be an insurance module or other module with specific functions. For example, the insurance can include a fuse or a fuse holder, etc.

[0085] In some embodiments of the present application, the heat-conducting member 300 is installed in the installation cavity of the plastic base 242, the boss surface of the heat-conducting member 300 is in contact with the plastic base 242 for positioning, the copper bar and the fuse are fixed by bolt connection, and the copper bar is fixed on the plastic base 242 by bolts. The bottom surface of the fuse is tightly attached to the heat-conducting member 300 by interference fit, thereby improving the heat conduction efficiency. The plastic base 242 is fixed on the shell 110 by bolts, and the heat-conducting member 300 and the shell 110 are interference fitted to ensure the heat conduction effect.

[0086] Referring to Figure 3 In some embodiments of the present application, the at least one heat-conducting member 300 includes a second heat-conducting member 320. The functional module 230 is in contact with the second heat-conducting member 320, and an end of the second heat-conducting member 320 away from the functional module 230 is in contact with the frame 100. Specifically, the fourth surface C of the second heat-conducting member 320 is in contact with the functional module 230, and the first surface A of the second heat-conducting member 320 is in contact with the shell 110 of the frame 100. The second heat-conducting member 320 can be a split heat-conducting member, and the second heat-conducting member 320 can include one or more heat-conducting units 301.

[0087] The first end and the second end of the heat conduction member 300 are exposed to the mounting cavity of the mounting bracket 240, the inner wall surface of the mounting cavity is in interference fit with the heat conduction member 300, the heat conduction member 300 is limited by the mounting bracket 240, the first end of the heat conduction member 300 is in interference fit with the connecting member 220, the functional module 230 or other heat generating devices, and the second end of the heat conduction member 300 is in interference fit with the shell 110 or the sealing cover 120. For example, the first end of the first heat conduction member 310 is pressed against the connecting member 220 of the power distribution module 200, and the second end of the first heat conduction member 310 is pressed against the sealing cover 120 of the frame 100; the first end of the second heat conduction member 320 is pressed against the functional module 230 of the power distribution module 200, and the second end of the second heat conduction member 320 is pressed against the shell 110 of the frame 100, so as to form a complete heat conduction transmission path, without changing the original shell 110 and cold plate structure, and the cost is reduced.

[0088] The entire main circuit of the power distribution module 200 is connected by copper bars and fixing bolts, and forms a complete high-voltage circuit. When a large current passes through the high-voltage circuit, the temperature of the copper bars or the heat generating elements rises, at this time, the temperature of the heat conduction member 300 is lower than that of the heat generating elements, and the heat is transmitted along the heat conduction member 300. Since the heat conduction member 300 is attached to the shell 110 and the sealing cover 120, the heat is finally guided to the shell 110 and the sealing cover 120.

[0089] The application provides a battery pack, which comprises the power distribution box assembly.

[0090] In some embodiments of the application, the battery pack comprises a shell 110, which is used to form at least part of the power distribution module 200 assembly.

[0091] Since the battery pack comprises the power distribution box assembly, the battery pack has the advantages of the power distribution box assembly, and details can be referred to the related description above, which will not be repeated here.

[0092] The application provides a power utilization device, which comprises a power utilization device and the battery pack, and the battery pack is used to provide electric energy for the power utilization device.

[0093] The power utilization device in the embodiments of the application can be a vehicle or an electric vehicle, for example, the electric vehicle can be a two-wheeled electric vehicle, a three-wheeled electric vehicle or the like.

[0094] For example, when the power utilization device is a vehicle, during high-speed driving of the vehicle, high-speed airflow blows through the shell 110 and the sealing cover 120, which can effectively take away the heat generated by the power distribution module 200, effectively reduce the internal temperature of the power distribution module 200, and reduce the heat risk.

[0095] In addition, the electric device can also be used for other energy storage devices, such as a mobile phone, a portable device, a notebook computer, an electric toy, an electric tool, a ship, and a spacecraft. The spacecraft can include an airplane, a rocket, a space shuttle, or a spaceship.

[0096] The embodiments or implementations in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts between the embodiments can be referred to each other.

[0097] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0098] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part 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.

Claims

1. A distribution box assembly, characterized in that, include: A frame (100) having a receiving cavity (111). A power distribution module (200), at least a portion of which is located within the receiving cavity (111); At least one thermally conductive element (300) is located within the receiving cavity (111), the thermally conductive element (300) is thermally connected to the power distribution module (200), and the thermally conductive element (300) is thermally connected to the frame (100).

2. The distribution box assembly according to claim 1, characterized in that, The power distribution module (200) includes a main body (210) and a mounting bracket (240). The mounting bracket (240) is installed on the outside of the main body (210). The first part of the mounting bracket (240) abuts against the outer surface of the main body (210) of the power distribution module (200), and the second part of the mounting bracket (240) abuts against the heat-conducting component (300).

3. The distribution box assembly according to claim 2, characterized in that, The second part of the mounting bracket (240) is provided with a mounting cavity, the first end of the mounting cavity facing the main body (210) of the power distribution module (200), and the second end of the mounting cavity facing the frame (100). At least a portion of the heat-conducting element (300) is disposed within the mounting cavity, and the heat-conducting element (300) abuts against the inner wall of the mounting cavity.

4. The distribution box assembly according to claim 3, characterized in that, The mounting cavity includes a first chamber located near the main body (210) of the power distribution module (200). The heat-conducting component (300) includes a first heat-conducting part (311), which is located in the first cavity.

5. The distribution box assembly according to claim 4, characterized in that, The mounting cavity includes a second chamber that communicates with the first chamber and is located close to the frame (100). The heat-conducting component (300) includes a second heat-conducting part (312) connected to the first heat-conducting part (311), and the second heat-conducting part (312) is located in the second cavity.

6. The distribution box assembly according to claim 5, characterized in that, Taking a plane perpendicular to the arrangement direction of the first heat-conducting part (311) and the second heat-conducting part (312) as a cross section, the cross-sectional area of ​​the first heat-conducting part (311) is greater than the cross-sectional area of ​​the second heat-conducting part (312).

7. The distribution box assembly according to claim 6, characterized in that, The heat-conducting component (300) is a split-type heat-conducting component, which includes at least one heat-conducting unit (301).

8. The distribution box assembly according to claim 1, characterized in that, The power distribution module (200) is fixed to the frame (100) via the heat-conducting component (300).

9. The distribution box assembly according to claim 1, characterized in that, The heat-conducting component (300) is configured as an insulating heat-conducting component, and the insulating heat-conducting component (300) is in insulating contact with the power distribution module (200).

10. The distribution box assembly according to claim 2, characterized in that, The heat-conducting component (300) is interference-fitted with the mounting bracket (240).

11. The distribution box assembly according to claim 1, characterized in that, The heat-conducting component (300) is interference-fitted between the power distribution module (200) and the frame (100).

12. The distribution box assembly according to claim 3, characterized in that, The at least one heat-conducting element (300) extends out of the mounting cavity from the end opposite to the power distribution module (200) and abuts against the frame (100).

13. The distribution box assembly according to claim 1, characterized in that, The at least one thermally conductive element (300) includes an elastic shell and a thermally conductive filler, the thermally conductive filler being filled within the elastic shell.

14. The distribution box assembly according to any one of claims 1-13, characterized in that, The frame (100) includes a housing (110) and a sealing cap (120). The housing (110) forms the receiving cavity (111) with an opening, and the sealing cap (120) closes the opening; at least one of the housing (110) and the sealing cap (120) is in contact with the heat-conducting element (300).

15. The distribution box assembly according to any one of claims 1-13, characterized in that, The at least one heat-conducting element (300) includes a first heat-conducting element (310); The power distribution module (200) includes a connector (220); the connector (220) is in contact with the first heat-conducting component (310), and one end of the first heat-conducting component (310) away from the connector (220) is in contact with the frame (100).

16. The distribution box assembly according to any one of claims 1-13, characterized in that, The at least one heat-conducting element (300) includes a second heat-conducting element (320); The power distribution module (200) includes a functional module (230), which is in contact with the second heat-conducting component (320), and the end of the second heat-conducting component (320) facing away from the functional module (230) is in contact with the frame (100).

17. A battery pack, characterized in that, Includes the distribution box assembly as described in any one of claims 1-16.

18. The battery pack according to claim 17, characterized in that, Includes a housing (110) that is reused to form at least a portion of the power distribution module (200) assembly.

19. An electrical appliance, characterized in that, It includes an electrical device and a battery pack as described in claim 17 or 18, the battery pack being used to provide electrical power to the electrical device.

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