Distribution box, battery pack and vehicle

Abstract

The embodiment of the utility model relates to the technical field of batteries. The embodiment of the utility model discloses a distribution box, a battery pack and a vehicle. The distribution box comprises a shell, a heating element, a heat dissipation frame and a cooling system, the heating element is arranged in the shell; the heat dissipation frame is arranged on the shell, the heat dissipation frame is filled with a heat conduction material, and the heat conduction material is attached to the heating element; the cooling system is arranged on the side, away from the heating element, of the heat conduction material in an overlapped mode, and the cooling system is attached to the heat conduction material. According to the scheme provided by the embodiment of the invention, the heat dissipation efficiency in the distribution box can be remarkably improved, so that the problem of high temperature in work is effectively solved.

Description

Technical Field

[0001] The present application belongs to the field of battery technology. Specifically, the present application relates to a distribution box, a battery pack and a vehicle. Background Art

[0002] In the current field of power distribution box technology, the connection and heat dissipation solutions for electronic components mostly adopt traditional methods. This method not only requires sufficient design margins for electronic components during design and selection, but also requires a large margin for copper busbar design. Although this design strategy guarantees the stable operation of the power distribution box to a certain extent, it undoubtedly increases manufacturing costs and reduces economic benefits.

[0003] More importantly, as the years of use increase, the heat dissipation problem of some heat-generating electronic components integrated inside the distribution box gradually becomes prominent. These heat-generating electronic components release a lot of heat during operation, especially in high-power, high-density power or communication equipment, where the heat dissipation problem is particularly prominent. Due to the limitations of traditional heat dissipation solutions, this heat is difficult to dissipate effectively, resulting in a continuous increase in the temperature inside the distribution box, which in turn accelerates the aging speed of electronic components and reduces their service life. This situation not only affects the working efficiency and reliability of the distribution box, but also poses a threat to the stable operation of the power system.

[0004] Therefore, how to solve the heat dissipation problem of electronic components inside the distribution box has become a technical problem that urgently needs to be solved in the current power industry. Utility Model Content

[0005] The purpose of this application is to provide a new technical solution for a distribution box, a battery pack and a vehicle.

[0006] According to a first aspect of the present application, the present application provides a distribution box, the distribution box comprising:

[0007] case;

[0008] A heating element, wherein the heating element is disposed in the housing;

[0009] A heat sink, which is arranged on the housing and filled with a heat-conducting material, and the heat-conducting material is in contact with the heating element;

[0010] A cooling system is stacked on a side of the heat-conducting material away from the heating element, and the cooling system is in contact with the heat-conducting material.

[0011] Optionally, the thermally conductive material is a highly thermally conductive insulating silicone material.

[0012] Optionally, the thermally conductive material is a thermally conductive silicone grease material.

[0013] Optionally, a plurality of heat dissipation areas are provided on the heat dissipation rack, and at least some of the heat dissipation areas are provided with a plurality of hollow structures arranged in an array, and the heat-conducting material is filled in each of the hollow structures.

[0014] Optionally, in the cross-section of the heat dissipation rack, the cross-section of the hollow structure is hexagonal.

[0015] Optionally, the heat dissipation rack is made by plastic injection molding.

[0016] Optionally, a heat conduction material layer with insulating properties is provided between the heat-conducting material and the cooling system.

[0017] Optionally, a heat dissipation cover is provided on the side of the cooling system facing away from the heat dissipation rack, a heat-conducting silicone grease layer is provided on the heat dissipation cover, and the cooling system is attached to the heat-conducting silicone grease layer.

[0018] Optionally, the cooling system includes a cooling pipe, a widened area is formed in a part of the cooling pipe, and the widened area corresponds to the heat dissipation area on the heat dissipation rack.

[0019] Optionally, the cooling system is a liquid cooling system.

[0020] Optionally, the housing includes a main body support skeleton, and an assembly groove is provided on the main body support skeleton;

[0021] The heating element includes a housing and a heating body, the housing reuses the inner wall of the assembly groove, the heating body is clamped in the assembly groove, and the heating body is attached to the heat-conducting material.

[0022] Optionally, the distribution box further includes an integrated board, the integrated board is connected to the main body support skeleton, and the integrated board is located on the side of the main body support skeleton facing away from the heat dissipation rack;

[0023] The heating element has pins, and the heating element is connected to the integrated board through the pins.

[0024] Optionally, the housing includes an upper cover and a lower shell, and through holes are provided on the upper cover;

[0025] The upper cover and the heat dissipation rack are an integral part, or the heat dissipation rack is embedded in the through hole, the lower shell covers one side of the integrated board, and the upper cover and the lower shell are connected through the main body support skeleton.

[0026] According to the second aspect of the present application, the present application provides a battery pack, and the battery pack includes:

[0027] A battery pack body; and

[0028] The power distribution box is disposed inside the battery pack, and the power distribution box is the power distribution box as described in the first aspect.

[0029] According to the third aspect of the present application, the present application provides a vehicle, which includes:

[0030] A vehicle body; and

[0031] The battery pack as described in the second aspect.

[0032] One beneficial effect of the embodiments of the present application is that:

[0033] For the power distribution box proposed according to the embodiments of the present application, a heat dissipation rack is provided between the heating element and the cooling system, and a heat-conducting material is filled inside the heat dissipation rack. By introducing the combination of the heat dissipation rack and the cooling system, the power distribution box realizes a highly efficient heat dissipation solution. The heat-conducting material filled inside the heat dissipation rack can quickly absorb and transfer the heat generated by the heating element, ensuring that the heat can be quickly dispersed to a larger heat dissipation area. Among them, since the heat-conducting material is directly in contact with the heating element, this closely contacting design effectively reduces the thermal resistance in the heat transfer process, thereby improving the heat dissipation efficiency; and the cooling system can directly act on the heat-conducting material to quickly take away the heat transferred from the heating element to further improve the heat dissipation effect. The solution provided by the embodiments of the present application can significantly improve the heat dissipation efficiency inside the power distribution box, thereby effectively solving the high-temperature problem during operation.

[0034] Through the following detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings, other features and advantages of the present application will become clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The drawings incorporated in the specification and constituting a part of the specification illustrate the embodiments of the present application and, together with the description, are used to explain the principles of the present application.

[0036] Figure 1 A cross-sectional view of the power distribution box provided by the embodiments of the present application;

[0037] Figure 2 A top view of the power distribution box provided by the embodiments of the present application;

[0038] Figure 3 A schematic structural view of the liquid cooling pipeline provided by the embodiments of the present application;

[0039] Figure 4 A schematic structural view of the heat dissipation rack provided by the embodiments of the present application;

[0040] Figure 5 A top view of the heat dissipation rack provided by the embodiments of the present application;

[0041] Figure 6Schematic diagram of the main support skeleton provided by the embodiment of the present application;

[0042] Figure 7 Schematic diagram of the installation relationship between the integrated board and the main support skeleton provided by the embodiment of the present application.

[0043] Description of the reference numerals:

[0044] 1. Cooling system; 101. Cooling pipeline; 102. Widening area; 103. Heat dissipation housing;

[0045] 2. Thermal conduction material layer; 3. Heat conduction material;

[0046] 4. Heat dissipation rack; 402. Heat dissipation area; 403. Hollow structure;

[0047] 5. Heating element; 6. Insurance element; 7. Integrated board; 8. Main support skeleton; 9. Upper cover; 10. Lower shell. Detailed implementation manners

[0048] Now, various exemplary embodiments of the present application will be described in detail with reference to the accompanying drawings. It should be noted that: Unless otherwise specifically stated, the relative arrangements, numerical expressions and values of the components and steps set forth in these embodiments do not limit the scope of the present application.

[0049] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way a limitation on the present application, its application or use.

[0050] Technologies, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods and devices should be regarded as part of the specification.

[0051] In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values.

[0052] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0053] Next, the distribution box, battery pack and vehicle provided by the embodiments of the present application will be described in detail with reference to the accompanying drawings.

[0054] According to one aspect of the present application, a distribution box is provided, and the distribution box can be applied to a battery pack.

[0055] The distribution box provided by the embodiment of the present application, see Figure 1 and Figure 2The distribution box includes: a shell, a heating element, a heat sink 4 and a cooling system 1; the heating element is arranged in the shell; the heat sink 4 is arranged in the shell, and the heat sink 4 is filled with a heat conductive material 3, and the heat conductive material 3 and the heating element are in contact with each other; the cooling system 1 is stacked on the side of the heat conductive material 3 away from the heating element, and the cooling system 1 is in contact with the heat conductive material.

[0056] The distribution box provided in the embodiment of the present application, see Figure 1 and Figure 2 A heat sink 4 is provided between the heating element and the cooling system 1, and a heat-conducting material 3 is filled inside the heat sink 4. By introducing the combination of the heat sink 4 and the cooling system 1, the distribution box realizes an efficient heat dissipation solution. The heat-conducting material 3 filled inside the heat sink 4 can quickly absorb and transfer the heat generated by the heating element, ensuring that the heat can be quickly dispersed to a larger heat dissipation area. Among them, since the heat-conducting material 3 is directly attached to the heating element, this close contact design effectively reduces the thermal resistance during the heat transfer process, thereby improving the heat dissipation efficiency; and the cooling system 1 can directly act on the heat-conducting material 3, quickly take away the heat transferred from the heating element, so as to further improve the heat dissipation effect. The solution provided in the embodiment of the present application can significantly improve the heat dissipation efficiency inside the distribution box, thereby effectively solving the high temperature problem.

[0057] By optimizing the above heat dissipation scheme, the overall heat dissipation performance of the distribution box provided in the embodiment of the present application is significantly improved. This design can ensure that the distribution box maintains a low temperature when operating under high load, extending the service life of the distribution box and the reliability and stability during use.

[0058] It should be noted that a distribution box usually needs to be equipped with many electronic components, and most of these electronic components will emit heat, and some of them even emit very high heat. These electronic components that emit heat are referred to as the heating elements mentioned above. These heating elements will cause the heat inside the distribution box to accumulate after long-term operation and cannot be dissipated, thus affecting the normal operation of the distribution box.

[0059] The design of the distribution box provided in the embodiment of the present application is clever in that a heat sink 4 filled with heat-conducting material is introduced, and a cooling system 1 is matched therewith. The heat-conducting material 3 in the heat sink 4 can quickly transfer the heat inside the distribution box to the cooling system 1, and then the cooling system 1 immediately performs efficient cooling and heat dissipation. This combination of heat dissipation and cooling achieves a rapid heat dissipation effect, and the cooling effect is significant, which effectively avoids the accumulation of heat inside the distribution box. The present application ensures that the distribution box can operate continuously and stably, and provides a new heat dissipation technology solution for the distribution box.

[0060] In some examples of the present application, the thermally conductive material 3 is a highly thermally conductive insulating silicone material.

[0061] The high thermal conductivity insulating silicone material has high thermal conductivity and good electrical insulation, and can quickly transfer the heat of the heat-generating components in the housing to the cooling system 1.

[0062] Specifically, in the example provided in this application, a high thermal conductivity insulating silicone material is used as the thermal conductive material 3. This material, with its excellent performance, plays a vital role in the heat dissipation design of the distribution box. First, the high thermal conductivity insulating silicone material has an extremely high thermal conductivity, which can quickly and effectively transfer the heat generated by the heating element in the shell to the cooling system 1. Compared with traditional thermal conductive materials, this material performs well in thermal conductivity, thereby greatly speeding up the heat dissipation speed and ensuring that the heat inside the distribution box is evacuated in time. Secondly, in addition to excellent thermal conductivity, the high thermal conductivity insulating silicone material also has good electrical insulation. This property is crucial for the electronic components inside the distribution box. It can effectively prevent safety hazards such as electrical short circuits or leakage caused by heat transfer. Therefore, the use of this material can not only improve the heat dissipation efficiency, but also enhance the safety performance of the distribution box.

[0063] In some examples of the present application, the thermally conductive material 3 is a thermally conductive silicone grease material.

[0064] In the example provided in the present application, the thermally conductive material 3 may also be a thermally conductive silicone grease material.

[0065] For example, the heat dissipation frame 4 is filled with the thermally conductive silicone grease material to form an efficient heat dissipation system.

[0066] Thermal grease material, this material has high thermal conductivity, can quickly transfer the heat generated by the heating elements inside the distribution box to the cooling system1, and it also has excellent electrical insulation, effectively ensuring the long-term safe operation of the distribution box. It is worth mentioning that the thermal grease material can maintain a grease state for a long time in a wide temperature range of -50℃ to +230℃, which provides a guarantee for its application in various extreme working environments.

[0067] In the technical solution of the embodiment of the present application, the use of thermal grease material significantly improves the heat conduction efficiency inside the distribution box, ensuring that the heat can be quickly and smoothly transferred to the cooling system, thereby ensuring the long-term stability of the electrical performance of the distribution box. This design not only improves the performance of the distribution box, but also enhances its environmental adaptability, allowing the distribution box to operate stably in various complex working environments.

[0068] In some examples of this application, see Figure 1 , Figure 4 andFigure 5 On the heat dissipation rack 4, a plurality of heat dissipation areas 402 are provided, and a plurality of hollow structures 403 arranged in an array are provided in at least part of the heat dissipation areas 402, and the heat conductive material 3 is filled in each of the hollow structures 403.

[0069] In the technical solution provided by the embodiment of the present application, filling the heat conductive material 3 in the hollow structure 403 of the heat dissipation rack 4 is mainly to fix and protect the heat conductive material 3 well.

[0070] For example, the heat conductive material 3 is a heat conductive silicone grease material, and the heat dissipation rack 4 can fix the heat conductive silicone grease material. This design can effectively avoid problems such as cracking, displacement, and height failure of the heat conductive silicone grease material after being affected by vibration, that is, it can protect the heat conductive silicone grease material.

[0071] It should be noted that the heat conductive material 3 includes but is not limited to the heat conductive silicone grease material.

[0072] In some examples of the present application, see Figure 4 and Figure 5 In the cross-section of the heat dissipation rack 4, the cross-section of the hollow structure 403 is hexagonal.

[0073] See Figure 4 and Figure 5 In each of the heat dissipation areas 402, a plurality of hollow structures 403 are provided, and the hollow structures 403 are used to fill the above-mentioned heat conductive material 3, that is, the heat conductive silicone grease material.

[0074] The reason for designing the hollow structure 403 as a hexagon is that a hexagon can form a completely close arrangement on a plane, which can increase the filling amount of the heat conductive silicone grease material. Moreover, the hexagonal structure can also withstand pressures from all directions and is more durable.

[0075] See Figure 4 and Figure 5 In the cross-section of the heat dissipation rack 4 along the thickness direction of the distribution box, a hollow structure 403 is provided, and the hollow structure 403 is hexagonal.

[0076] Among them, the hollow structure 403 is, for example, a regular hexagon.

[0077] In some examples of the present application, the heat dissipation rack 4 is formed by plastic injection molding.

[0078] The heat dissipation rack 4 is made of plastic material and has a certain hardness. It can be formed by injection molding, and the molding method is relatively simple and will not increase the production difficulty.

[0079] In some examples of the present application, see Figure 1, a heat conduction material layer 2 with insulating properties is provided between the heat conduction material 3 and the cooling system 1.

[0080] See Figure 1 , a thinner heat conduction material layer 2 can also be provided between the cooling system 1 and the heat conduction material 3. The thickness of the heat conduction material layer 2 can be, for example, 1 mm to 2 mm. In addition to having a heat conduction function, the heat conduction material layer 2 also has insulating properties, which can improve safety and avoid electric leakage. At the same time, the heat conduction material layer 2 can also improve the heat conduction efficiency.

[0081] In the technical solution provided by the embodiment of the present application, inside the housing, the heat generated by all the heating elements can be transferred to the heat conduction material layer 2 through the heat conduction material 3 (such as heat conduction silicone material) on the heat dissipation rack 4, and then the heat conduction material layer 2 transfers the heat to the cooling system 1 for temperature reduction treatment.

[0082] That is to say, in the embodiment of the present application, a heat dissipation and temperature reduction assembly can be formed by the heat conduction silicone material, the heat conduction material layer 2 and the cooling system 1. The three are matched to achieve sufficient and rapid heat dissipation of the distribution box.

[0083] Among them, the heat conduction material layer 2 is a heat conduction ceramic layer.

[0084] Specifically, the heat conduction ceramic layer can be made of a ceramic material with a high heat conduction coefficient, such as silicon nitride (Si 3 N 4 ) ceramic material.

[0085] In the distribution box provided by the embodiment of the present application, it is designed to use the heat conduction ceramic layer in combination with the heat conduction silicone grease material on the heat dissipation rack 4, which can quickly and effectively conduct the heat generated inside the housing to the cooling system 1, so as to achieve rapid heat dissipation and maintain the normal operation of the distribution box. It should be noted that the heat conduction ceramic layer is located between the heat conduction material 3 and the cooling system 1. Based on its insulating properties, it can effectively avoid the failure of safety and make the electrical connection inside the entire distribution box extremely reliable and safe.

[0086] In some examples of the present application, see Figure 1 , a heat dissipation cover 103 is provided on the side of the cooling system 1 facing away from the heat dissipation rack 4. A heat conduction silicone grease layer is provided on the heat dissipation cover 103, and the cooling system 1 is attached to the heat conduction silicone grease layer.

[0087] The heat dissipation cover 103 can protect the cooling system 1.

[0088] It should be noted that the cooling system 1 may or may not be provided with the heat dissipation cover 103.

[0089] See Figure 1 , when a heat dissipation cover 103 is provided above the cooling system 1, a thin layer of thermal grease can be applied on the heat dissipation cover 103. This thermal grease layer is in contact with the cooling system 1 and can quickly conduct heat to the cooling system 1. This can protect the cooling system 1 without affecting heat dissipation.

[0090] In some examples of the present application, see Figure 2 and Figure 3 , the cooling system 1 includes a cooling pipe 101. A local part of the cooling pipe 101 forms a widened area 102, and the widened area 102 corresponds to the heat dissipation area 402 on the heat dissipation rack 4.

[0091] See Figure 2 and Figure 3 , at a local position of the cooling pipe 101, specifically, at each heat dissipation area 402 on the heat dissipation rack 4, the corresponding cooling pipe 101 can be flattened or otherwise operated to form a special widened area 102. Here, the surface area of the pipe will increase. Since heat dissipation is mainly achieved through heat exchange with the surrounding environment, increasing the heat dissipation area can provide more heat exchange opportunities, thereby improving the heat dissipation efficiency.

[0092] In the technical solution provided by the embodiment of the present application, by flattening the specified position of the cooling pipe 101, the heat dissipation area can be increased, and the heat exchange efficiency can be improved. In this way, the temperature of the equipment can be effectively reduced, and the operation stability and service life of the distribution box can be improved.

[0093] It should be noted that the formation method of the widened area 102 in the present application is not limited to the flattening method and can be directly formed during the pipe processing. The present application does not limit this.

[0094] In some examples of the present application, see Figure 3 , the cooling system 1 is a liquid cooling system.

[0095] When the cooling system 1 is a liquid cooling system, a coolant is filled in the cooling pipe 101. The coolant is used as a heat transfer medium and can transfer heat from one place to another. The selection of the coolant has an important impact on the cooling efficiency and performance.

[0096] Among them, the coolant filled in the cooling pipe 101 can be water. Water has a relatively large specific heat capacity and can effectively absorb and transfer heat. Water also has good thermal conductivity and can quickly transfer heat from the heat source to the heat dissipation position for heat dissipation. However, water has a relatively high freezing point and is prone to freezing in a low-temperature environment. Therefore, water-cooled heat dissipation needs to operate at an appropriate ambient temperature.

[0097] Of course, the coolant includes but is not limited to water. Specifically, the coolant is, for example, ethylene glycol, propylene glycol, fluorinated liquid, etc. Among them, both ethylene glycol and propylene glycol have a relatively low freezing point and a relatively high boiling point, and can operate stably within a relatively wide temperature range. They also have good thermal conductivity and chemical stability and are suitable for various liquid-cooled heat dissipations. The fluorinated liquid has higher thermal stability and lower viscosity and is suitable for liquid-cooled heat dissipation at high temperatures and high speeds.

[0098] In some examples of the present application, as shown in Figure 6 , the housing includes a main body support skeleton 8, and an assembly groove is provided on the main body support skeleton 8; the heating element includes a housing and a heating body 5, the housing reuses the inner wall of the assembly groove, the heating body 5 is clamped in the assembly groove, and the heating body 5 is attached to the heat-conducting material 3.

[0099] Among them, the heating body 5 is, for example, an iron core, which can be used to form a contactor in a distribution box and belongs to a heating element. Usually, the contactor in a distribution box includes a special housing and an iron core arranged in the housing.

[0100] In the distribution box provided by the embodiment of the present application, the contactor actually has a shell-less design. Note that the "shell" mentioned in the above example is actually the inner wall of the assembly groove, and the heating body 5 is directly exposed. It is designed to directly clamp the heating body 5 in the assembly groove on the main body support skeleton 8, which can save the shell cost and the screw fixing cost.

[0101] Among them, the main body support skeleton 8 is a plastic injection molded part.

[0102] In addition, as shown in Figure 1 , the heating component includes a fuse element 6, and the fuse element 6 is arranged on the main body support skeleton 8 and attached to the heat dissipation rack 4. Among them, the fuse element 6 is a fuse.

[0103] As shown in Figure 1 , after removing the shell of the contactor, the heating body 5 and the fuse are both installed and attached to the heat dissipation rack 4, and both are attached to the heat dissipation area 402 of the heat dissipation rack 4 to achieve heat dissipation.

[0104] In some examples of the present application, as shown in Figure 1 and Figure 7The distribution box also includes an integrated board 7, which is connected to the main support frame 8 and is located on the side of the main support frame 8 away from the heat sink 4; the heating element has pins, and the heating element is connected to the integrated board 7 through the pins.

[0105] The integrated board 7 is, for example, a PBCA board.

[0106] When assembling the distribution box provided in the embodiment of the present application, the electronic components such as the heating element 5 and the insurance element 6 are first assembled on the main support frame 8, and then these components are electrically connected to the integrated board 7. The main reason is that these electronic components are heavy and need to be supported by the main support frame 8 first, and then integrated on the integrated board 7.

[0107] The heating element 5 and the insurance element 6 are both heating elements. Of course, there may be many heating elements in the distribution box and are not limited to the heating element 5 and the insurance element 6 mentioned above.

[0108] In addition, the above-mentioned components, such as the heating element 5 and the safety element 6, can be integrated on the integrated board 7 through spring pieces or plug-in electrical connectors. The assembly method is simple and the disassembly is convenient.

[0109] The distribution box provided in the embodiment of the present application may also include a copper busbar, a low-voltage connector, a high-voltage connector, a sintering module and a leakage detection module; the copper busbar, the low-voltage connector, the high-voltage connector, the sintering module and the leakage detection module are arranged on the main support frame 8 and are electrically connected to the integrated board 7.

[0110] That is to say, the multiple components arranged in the shell can be first installed on the main support frame 8, and then electrically connected to the integrated board 7 installed in the shell. The overall assembly method is simple and convenient, which can greatly reduce the previous complex arrangements such as multi-hole installation and multi-angle overlap.

[0111] It should be noted that components with high heat generation can also be installed on the heat dissipation frame 4 at the same time, and they fit in with the heat dissipation frame 4 .

[0112] In some examples of this application, see 1 and Figure 7 The shell includes an upper cover 9 and a lower shell 10, and the upper cover 9 is provided with a through hole; the upper cover 9 and the heat dissipation frame 4 are integrated, or the heat dissipation frame 4 is embedded in the through hole, and the lower shell 10 is covered on one side of the integrated board 7, and the upper cover 9 and the lower shell 10 are connected through the main body support frame 8.

[0113] The upper cover 9, the lower case 10 and the main body support framework 8 form the main structure of the housing. Among them, the main body support framework 8 is used to support each component, and the upper cover 9 and the lower case 10 can make the whole distribution box form a closed structure.

[0114] The heat dissipation rack 4 can be installed from the side of the main body support framework 8 where the cooling system 1 is arranged, and the integrated board 7 is installed from the side of the main body support framework 8 away from the cooling system 1.

[0115] It should be noted that the upper cover 9 and the heat dissipation rack 4 are an integral part and are stacked, or the heat dissipation rack 4 is directly embedded in the through hole of the upper cover 9, so as to ensure that the cooling system 1 is in contact with the heat dissipation rack 4.

[0116] According to another aspect of the embodiments of the present application, a battery pack is provided. The battery pack includes: a battery pack body and a distribution box, which is arranged in the battery pack body, and the distribution box is the distribution box described in any one of the above.

[0117] According to still another aspect of the embodiments of the present application, a vehicle is provided. The vehicle includes: a vehicle body and the battery pack described above.

[0118] The specific implementation manners of the battery pack and the vehicle in the embodiments of the present application can refer to the respective embodiments of the above distribution box. Therefore, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, and will not be elaborated herein one by one.

[0119] In the above embodiments, the differences between the various embodiments are mainly described. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a more optimal embodiment. Considering the simplicity of the text, it will not be elaborated herein.

[0120] Although some specific embodiments of the present application have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of the present application. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A distribution box, characterized in that: include: case; A heating element, wherein the heating element is disposed in the housing; A heat sink (4), the heat sink (4) being arranged on the housing, the heat sink (4) being filled with a heat-conducting material (3), the heat-conducting material (3) being in contact with the heating element; A cooling system (1), the cooling system (1) being stacked on a side of the heat-conducting material (3) facing away from the heating element, the cooling system (1) being in contact with the heat-conducting material; A heat conductive material layer (2) having insulating properties is provided between the heat conductive material (3) and the cooling system (1).

2. The distribution box according to claim 1, characterized in that: The thermally conductive material (3) is a highly thermally conductive insulating organic silicon material.

3. The distribution box according to claim 1, characterized in that: The heat-conducting material (3) is a heat-conducting silicone grease material.

4. The distribution box according to claim 1, characterized in that: The heat dissipation frame (4) is provided with a plurality of heat dissipation areas (402), at least some of the heat dissipation areas (402) are provided with a plurality of hollow structures (403) arranged in an array, and the heat conductive material (3) is filled in each of the hollow structures (403).

5. The distribution box according to claim 4, characterized in that: In the cross section of the heat dissipation frame (4), the cross section of the hollow structure (403) is hexagonal.

6. The distribution box according to claim 1, characterized in that: The heat dissipation frame (4) is made of plastic injection molding.

7. The distribution box according to claim 1, characterized in that: A heat dissipation cover (103) is provided on one side of the cooling system (1) facing away from the heat dissipation frame (4), a heat dissipation cover (103) is provided with a thermal conductive silicone grease layer, and the cooling system (1) is in contact with the thermal conductive silicone grease layer.

8. The distribution box according to claim 4, characterized in that: The cooling system (1) comprises a cooling pipe (101), a part of the cooling pipe (101) forms a widened area (102), and the widened area (102) corresponds to the heat dissipation area (402) on the heat dissipation frame (4).

9. The distribution box according to claim 8, characterized in that: The cooling system (1) is a liquid cooling system.

10. The distribution box according to claim 1, characterized in that: The shell comprises a main body support frame (8), and the main body support frame (8) is provided with an assembly groove; The heating element comprises an outer shell and a heating element (5), the outer shell reuses the inner wall of the assembly groove, the heating element (5) is snap-fitted into the assembly groove, and the heating element (5) is in contact with the heat-conducting material (3).

11. The distribution box according to claim 10, characterized in that: The distribution box further comprises an integrated board (7), wherein the integrated board (7) is connected to the main body support frame (8), and the integrated board (7) is located on a side of the main body support frame (8) away from the heat dissipation frame (4); The heating element has pins, and the heating element is connected to the integrated board (7) via the pins.

12. The distribution box according to claim 11, characterized in that: The housing comprises an upper cover (9) and a lower shell (10), and the upper cover (9) is provided with a through hole; The upper cover (9) and the heat dissipation frame (4) are an integral part, or the heat dissipation frame (4) is embedded in the through hole, the lower shell (10) is covered on one side of the integrated board (7), and the upper cover (9) and the lower shell (10) are connected via the main body support frame (8).

13. A battery pack, characterized in that: include: Battery pack body; and A distribution box is arranged in the battery pack body, and the distribution box is the distribution box as described in any one of claims 1-12.

14. A vehicle, characterized in that: Including the battery pack as claimed in claim 13.

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