Cooling structure, driving assembly and vehicle

Abstract

The utility model is suitable for the technical field of electric driving, and provides a cooling structure, a driving assembly and a vehicle, the cooling structure is used for cooling an electric connection structure, the cooling structure comprises a shell, the shell is internally provided with a containing space, the containing space is used for containing the electric connection structure, and the shell is internally provided with a feeding pipe to be connected with a cooling medium supply source; the end cover covers the shell, a channel structure is arranged on the end cover, the channel structure comprises a feeding end and a discharging end, the feeding end is communicated with the feeding pipe, and the discharging end faces the electric connection structure so that the cooling medium can flow to the electric connection structure; according to the cooling structure provided by the invention, the channel structure for the cooling medium to circulate is arranged in the shell, and the cooling medium can directly circulate to the electric connection structure through the channel structure, so that the effect that the cooling medium sprays the electric connection structure is achieved, and a better cooling effect on the electric connection structure can be achieved; meanwhile, the channel structure is arranged on the end cover, the internal structure of the shell can be simplified, and the channel structure is convenient to clean.

Description

Technical Field

[0001] This application belongs to the technical field of electric drive, and particularly relates to a cooling structure, a drive assembly, and a vehicle. 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 energy-saving and environmental protection advantages.

[0003] The electric drive axle in an electric vehicle plays an important role in transmitting the power generated by the motor. In current electric drive axles, the cooling effect of the copper busbar is poor, which easily leads to a decline in the performance and efficiency of the electric drive axle, and also easily causes safety accidents such as fire. Summary of the Utility Model

[0004] In view of the above problems, this application provides a cooling structure, a drive assembly, and a vehicle, which can alleviate the problem of poor cooling effect of the copper busbar in the electric drive axle.

[0005] In a first aspect, some embodiments of this application provide a cooling structure for cooling an electrical connection structure. The cooling structure includes:

[0006] A housing, within which there is an accommodation space for accommodating the electrical connection structure, and a supply pipe is provided in the housing to connect to a cooling medium supply source;

[0007] An end cover, which is closed on the housing. A channel structure is provided on the end cover, and the channel structure includes a feed end and a discharge end. The feed end is in communication with the supply pipe, and the discharge end faces the electrical connection structure, so that the cooling medium flows to the electrical connection structure.

[0008] In the technical solution of this embodiment, a channel structure for the circulation of the cooling medium is provided in the housing, and the cooling medium can directly flow to the electrical connection structure through the channel structure, so as to achieve the effect of spraying the cooling medium on the electrical connection structure, thereby better cooling and cooling down the electrical connection structure; at the same time, setting the channel structure on the end cover can also simplify the internal structure of the housing and facilitate cleaning of the channel structure.

[0009] In some embodiments, the channel structure includes a main channel and a branch channel communicating with the main channel. The main channel includes a feed end, and the feed end is in communication with the supply pipe;

[0010] The branch channel includes a discharge end for the cooling medium to flow towards the electrical connection structure.

[0011] In the technical solution of this embodiment, the channel structure includes a main channel and a plurality of branch channels. The main channel is connected to the feeding pipe so that the cooling medium can enter the channel structure. The cooling medium is conveyed to different positions of the electrical connection structure through the branch channels, so as to better cool down the electrical connection structure.

[0012] In some embodiments, the end cover includes a main body portion and an extension portion connected to the main body portion. The main channel is formed inside the main body portion. The extension portion extends from the main body portion towards the direction where the electrical connection structure is located, and the branch channels are formed inside the extension portion.

[0013] In the technical solution of this embodiment, the end cover includes a main body portion and an extension portion, and the extension portion extends towards the direction where the electrical connection structure is located, so that the discharge end of the branch channel can be closer to the electrical connection structure, so that the cooling medium can flow to the required position of the electrical connection structure better and more, reducing the amount of the cooling medium that splashes or flows to other positions, and thus better improving the cooling effect.

[0014] In some embodiments, an outlet communicating with the branch channel is formed at one end of the extension portion facing the electrical connection structure, and the inner diameter of the outlet is smaller than the inner diameter of the branch channel.

[0015] In the technical solution of this embodiment, an outlet is provided on the extension portion and the outlet is communicated with the branch channel, so that the cooling medium in the branch channel can be sprayed onto the electrical connection structure through the outlet. The inner diameter of the outlet is smaller than the inner diameter of the branch channel to increase the flow rate of the cooling medium flowing through the outlet, so that the cooling medium can be better sprayed onto the electrical connection structure, reducing the amount of the cooling medium flowing to other positions, and thus better improving the cooling effect.

[0016] In some embodiments, the inner diameter range of the outlet is 1 mm to 2 mm.

[0017] The technical solution of this embodiment provides the inner diameter range of the outlet to increase the flow rate of the cooling medium flowing through the outlet, so that the cooling medium can be better sprayed onto the electrical connection structure, reducing the amount of the cooling medium flowing to other positions.

[0018] In some embodiments, a buffer space is provided between the extension portion and the electrical connection structure.

[0019] In the technical solution of this embodiment, a buffer space is provided between the extension portion and the electrical connection structure. Since part of the cooling medium will be reflected and splashed to other positions after being sprayed onto the electrical connection structure, the setting of the buffer space can reduce the impact force of the cooling medium sprayed onto the electrical connection structure, thus reducing the amount of the cooling medium splashed to other positions.

[0020] In some embodiments, the distance between the extension portion and the electrical connection structure ranges from 8 mm to 12 mm.

[0021] The technical solution of this embodiment provides the distance between the extension portion and the electrical connection structure, so that the cooling medium can be sprayed onto the electrical connection structure more and better, and thus the amount of the cooling medium sputtered from the electrical connection structure to other positions can be reduced.

[0022] In some embodiments, the main body portion includes a first sub-portion, an extension portion is provided on the first sub-portion, and a first groove communicating with the branch channel is formed on the first sub-portion;

[0023] The main body portion further includes a second sub-portion detachably connected to the first sub-portion, and the second sub-portion can cover the first groove to form a main channel in the first groove.

[0024] In the technical solution of this embodiment, the main body portion includes a first sub-portion and a detachable second sub-portion, and the second sub-portion is covered on the first groove to form a main channel, so as to facilitate the disassembly and installation of the second sub-portion, and facilitate the cleaning of the main channel and the branch channel.

[0025] In some embodiments, the end cap is provided on one side of the housing, and the branch channel extends in the horizontal direction.

[0026] The technical solution of this embodiment provides a relative position between the end cap and the housing. Setting the end cap on the side of the housing can facilitate the staff to better disassemble and install the end cap, and can also reduce the interference of other structures outside the housing on the installation and disassembly of the end cap.

[0027] In some embodiments, the inner diameter of the end of the feed pipe connected to the channel structure gradually decreases in the direction of the channel structure.

[0028] In the technical solution of this embodiment, the end of the feed pipe communicating with the channel structure is arranged in a tapered shape, so as to increase the flow rate of the cooling medium entering the channel structure and increase the pressure of the cooling medium in the channel structure, so that the cooling medium can be better sprayed onto the electrical connection structure, reduce the amount of the cooling medium flowing to other positions, and thus better improve the cooling effect.

[0029] In some embodiments, the electrical connection structure includes a first connector and a second connector, at least part of the first connector is connected to the second connector, and the discharge end faces the connection part of the first connector and the second connector.

[0030] The technical solution of this embodiment provides some specific structures of the electrical connection structure, enabling the electrical connection structure to include a first connecting member and a second connecting member that are connected to each other, facilitating the transmission of electrical energy by the electrical connection structure, and facilitating the installation, replacement, and maintenance of the electrical connection structure; at the same time, enabling the cooling medium to flow at least to the connection part between the first connecting member and the second connecting member, as the connection part between the two usually generates a large amount of heat, this setting can better cool down the high-heat generation positions in the electrical connection structure, thereby better reducing the risk of the electrical connection structure and improving the safety performance.

[0031] In a second aspect, some embodiments of the present application further provide a drive assembly, including the cooling structure provided by some embodiments of the first aspect, as well as a motor and a controller; the motor and the controller are electrically connected through the electrical connection structure.

[0032] In a third aspect, some embodiments of the present application further provide a vehicle, including the drive assembly provided by some embodiments of the second aspect.

[0033] The above description is only an overview of the technical solution of the present application. In order to be able to more clearly understand the technical means of the present application, it can be implemented in accordance with 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 following specifically describes the specific embodiments of the present application. Description of the Drawings

[0034] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present application. And in all the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0035] Figure 1 is a front view schematic diagram of a partial structure of the drive assembly and the cooling structure provided by the embodiment of the present application.

[0036] Figure 2 is Figure 1 a partial cross-sectional schematic diagram at A-A in

[0037] Figure 3 is Figure 2 a partial enlarged schematic diagram at B in

[0038] Figure 4 is Figure 2 a partial enlarged schematic diagram at C in

[0039] The meanings of the marks in the figure are:

[0040] 1000, drive assembly;

[0041] 100, cooling structure;

[0042] 10. Housing; 101. Accommodating space; 11. Feeding pipe;

[0043] 20. End cap; 21. Main body part; 211. First sub - part; 2111. First groove; 212. Second sub - part; 2121. Second groove; 22. Extension part; 221. Discharge port; 23. Channel structure; 231. Main channel; 2311. Feed end; 232. Branch channel; 2321. Discharge end;

[0044] 30. Buffer space;

[0045] 200. Electrical connection structure;

[0046] 40. First connector; 50. Second connector. Detailed implementation manner

[0047] The embodiments of the technical solution 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 solution of the present application more clearly, so they are only examples and cannot be used to limit the protection scope of the present application.

[0048] 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 description of the specification, claims and above - mentioned drawings of this application are intended to cover non - exclusive inclusion.

[0049] In the description of the embodiments of this 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 this application, the meaning of "a plurality" is more than two, unless otherwise clearly and specifically defined.

[0050] Referring to "embodiments" herein means that the specific features, structures or characteristics described in connection with the embodiments can be included in at least one embodiment of this application. The phrase appears in various positions 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.

[0051] In the description of the embodiments of the present application, the term "and / or" is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: 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.

[0052] In the description of the embodiments of the present application, the term "plurality" refers to two or more (including two). Similarly, "multiple groups" refers to two or more groups (including two groups), and "multiple pieces" refers to two or more pieces (including two pieces).

[0053] In the description of the embodiments of the present application, the orientation or positional relationship indicated by technical terms such as "center", "longitudinal", "lateral", "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, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0054] 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 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 situations.

[0055] 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.

[0056] In electric vehicles, the electric drive axle plays a very important role. The electric drive axle is an electromechanical integrated drive system, which is mainly used to transmit the power generated by the motor to the wheels to drive the wheels to rotate. The electric drive axle usually includes devices such as a motor, a reducer, a differential, and a controller; the motor is mainly used to convert electrical energy into mechanical energy to generate power and drive the wheels to rotate; the controller is mainly used to receive control signals and control the working states of devices such as the motor.

[0057] In the current electric drive axle, the controller and the motor are connected to each other through an electrical connection structure (such as a copper busbar, etc.) to achieve current conduction. Due to the existence of contact resistance in the electrical connection structure, its temperature will rise when current passes through it. As the electric drive axle continues to work, the temperature on the electrical connection structure will continue to rise, which can easily cause the electrical connection structure to fail. For example, when the electric drive axle continues to work at a high torque, the electrical connection structure will heat up rapidly and continue to generate heat, which can easily cause the electrical connection structure to deform and cause current conduction failure, and may even cause dangerous situations such as fire.

[0058] In order to reduce the temperature of the electrical connection structure during the use of the electric drive axle, a cooling structure can be set near the electrical connection structure. At present, pipelines are usually set near the electrical connection structure, and coolant flows through these pipelines to remove the heat generated by the electrical connection structure through the flowing coolant, thereby playing a cooling role. However, this method has a poor cooling effect, and requires the arrangement of pipelines in the electric drive axle and structures for cooling and dissipating the coolant, which is relatively complex and requires a high space requirement.

[0059] Based on the above considerations, in order to reduce the heat generated by the electrical connection structure during the operation of the electric drive axle and reduce the risk of structural failure and safety risks, an embodiment of the present application provides a cooling structure, in which a channel structure is arranged in the shell, and the cooling medium can be directly sprayed on the electrical connection structure after flowing through the channel structure; at the same time, the channel structure is arranged on the end cover, and the end cover is covered on the shell.

[0060] In such a structure, the cooling medium can be sprayed directly on the electrical connection structure, so as to better cool the electrical connection structure. At the same time, there is no need to lay a circulation pipeline in the shell, nor is there a need to set a cooling and heat dissipation structure for the cooling medium at other positions of the shell. The cooling and heat dissipation effect is improved while simplifying the structure and reducing the space requirement. Setting the channel structure on the end cover can further simplify the structure of the channel structure, reduce the mutual interference between the channel structure and other structures inside the shell, and facilitate the cleaning of the channel structure.

[0061] The cooling structure disclosed in the embodiment of the present application can be applied to the electric drive axle of the vehicle, and can also be applied to the power supply equipment for other electrical devices of the vehicle, and can also be applied to the electric drive structure of other equipment, such as mobile phones, tablets, laptops, electric toys, electric tools, battery cars, ships, spacecraft, etc. Among them, electric toys can include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys and electric airplane toys, etc., and spacecraft can include airplanes, rockets, space shuttles and spacecrafts, etc.

[0062] For the convenience of description, the following embodiments take the cooling structure 100 provided in some embodiments of the present application being applied to the electric drive axle of a vehicle as an example for description.

[0063] Referring to Figure 1 , Figure 1 is a front view schematic diagram of some partial structures related to the cooling structure 100 in the drive assembly 1000 provided in some embodiments of the present application. The drive assembly 1000 can be applied to fuel vehicles, gas vehicles or new energy vehicles, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery is provided inside the vehicle, and the battery can be arranged at the bottom, head or tail of the vehicle. The battery can be used for power supply of the vehicle. For example, the battery can be used as the operating power source of the vehicle. The vehicle may further include a controller and a motor, and the controller is used to control the battery to supply power to the motor. For example, it is used for the working power requirements during vehicle startup, navigation and driving.

[0064] In some embodiments of the present application, the drive assembly 1000 can not only transmit power for vehicle driving, but also transmit power to the vehicle control system.

[0065] In a first aspect, some embodiments of the present application provide a cooling structure 100 for cooling the electrical connection structure 200. Referring to Figure 2 , the cooling structure 100 provided in the present application includes a housing 10 and an end cover 20. Among them, a receiving space 101 is provided inside the housing 10, and the receiving space 101 is used to receive the electrical connection structure 200. A supply pipe 11 is provided inside the housing 10 to connect to a cooling medium supply source; the electrical connection structure 200 is received in the receiving space 101; the end cover 20 covers the housing 10, and a channel structure 23 is provided on the end cover 20. The channel structure 23 includes a feed end 2311 and a discharge end 2321. The feed end 2311 is communicated with the supply pipe 11, and the discharge end 2321 faces the electrical connection structure 200 so that the cooling medium flows to the electrical connection structure 200.

[0066] The electrical connection structure 200 refers to a structure in the drive assembly 1000 for connecting two different electrical components and transmitting current between the connected electrical components. The electrical connection structure 200 may include two or more interconnected connectors. One ends of multiple different connectors are interconnected, and the other ends are respectively connected to different electrical components. By way of example, the electrical connection structure 200 can be a copper busbar.

[0067] The housing 10 refers to the component in the cooling structure 100 that cooperates with the end cover 20 to form the internal environment of the drive assembly 1000. The housing 10 can have various shapes and sizes. For example, the shape of the housing 10 can be cuboid, cylindrical, hexagonal prism-shaped or other shapes. By way of example, the shape of the housing 10 can be determined according to the shape of the drive assembly 1000 and the installation space of the housing 10. The material of the housing 10 can include metal, plastic or other materials.

[0068] The accommodation space 101 refers to the space formed inside the housing 10. The accommodation space 101 is used to accommodate the electrical connection structure 200 and can also be used to accommodate other devices. The accommodation space 101 can have various shapes and sizes. For example, the accommodation space 101 can be a cuboid-shaped space, a cylindrical space, a hexagonal prism-shaped space or a space of other regular shapes. The accommodation space 101 can also be of various irregular shapes. By way of example, the shape of the accommodation space 101 can be set according to the shape of the housing 10.

[0069] The feed pipe 11 refers to the pipe in the housing 10 that connects to the cooling medium supply source. One end of the feed pipe 11 can be connected to the cooling medium supply source so that the cooling medium can enter the feed pipe 11. The feed pipe 11 can be a pipe fitting connected to the inner wall side of the housing 10. At this time, the feed pipe 11 can be connected to the housing 10 by means of screwing, clamping, gluing, welding, etc. The feed pipe 11 can also be a tubular structure formed inside the side wall of the housing 10. Along the radial direction of the feed pipe 11, the cross-sectional shape of the feed pipe 11 can be rectangular, circular, hexagonal or other shapes. The material of the feed pipe 11 can include metal, plastic or materials.

[0070] The cooling medium refers to the substance in the cooling structure 100 that cools down the electrical connection structure 200. The cooling medium can include liquid, gas or solid, that is, the cooling medium can only include liquid, gas or solid, or can also be a mixture of any two or three of them. By way of example, the cooling medium can be oil.

[0071] The cooling medium supply source refers to the structure that provides the cooling medium. The cooling medium supply source can include structures such as a pump and a box for containing the cooling medium. The cooling medium supply source can be located inside the housing 10 or outside the housing 10.

[0072] The end cap 20 refers to a component that covers the opening of the accommodation space 101 of the housing 10. After the end cap 20 covers the housing 10, it can seal the accommodation space 101 to form a closed accommodation space 101 isolated from its external environment within the housing 10; the end cap 20 can have various different shapes and sizes. Specifically, the shape of the end cap 20 can be square, circular or other shapes; the end cap 20 can be detachably covered on the housing 10 by means such as screwing or clamping, or can be fixedly connected to the housing 10 by means such as bonding or welding; the material of the end cap 20 can include metal, plastic or other materials.

[0073] The channel structure 23 refers to a structure provided in the cooling structure 100 for the cooling medium to flow through. The channel structure 23 is provided on the end cap 20. The channel structure 23 can be a pipe fitting provided on the side of the end cap 20 facing the accommodation space 101. At this time, the cooling medium can flow inside the pipe fitting. The channel structure 23 can also be formed inside the end cap 20. For example, it can be a groove structure opened in the end cap 20 or a pipe fitting embedded in the end cap 20, etc.; along the radial direction of the channel structure 23, the cross-sectional shape of the channel structure 23 can be square, circular, hexagonal or other shapes.

[0074] The channel structure 23 includes a feed end 2311 and a discharge end 2321. The feed end 2311 is communicated with the supply pipe 11 so that the cooling medium in the supply pipe 11 can enter the channel structure 23 through the feed end 2311; the discharge end 2321 faces the electrical connection structure 200, and the cooling medium in the channel structure 23 can be discharged out of the channel structure 23 through the discharge end 2321 and directly flow to the electrical connection structure 200; there can be one feed end 2311, or two or more; there can be one discharge end 2321, or two or more. In the case where the channel structure 23 has multiple discharge ends 2321, the multiple discharge ends 2321 can face different positions of the electrical connection structure 200 to better achieve the cooling effect.

[0075] The discharge end 2321 of the channel structure 23 can be in contact with the electrical connection structure 200, or can be spaced from the electrical connection structure 200; the initial velocity of the cooling medium flowing out from the discharge end 2321 can be parallel to the direction of gravity, that is, the cooling medium can vertically and directly fall onto the electrical connection structure 200. The initial velocity of the cooling medium flowing out from the discharge end 2321 can also have an angle with the direction of gravity, that is, the cooling medium can flow along a parabolic trajectory and fall on the electrical connection structure 200.

[0076] It can be understood that since the cooling medium needs to directly contact the electrical connection structure 200, the cooling medium should have good insulation performance to reduce the interference to the electrical connection structure 200 during the cooling process and reduce the occurrence of short circuits and other situations.

[0077] During the operation of the electrical connection structure 200, the cooling medium can flow through the supply pipe 11 into the channel structure 23 and directly flow onto the electrical connection structure 200 through the discharge end 2321 of the channel structure 23. The cooling medium flowing onto the electrical connection structure 200 can exchange heat with the electrical connection structure 200 and reduce the temperature of the electrical connection structure 200. As the cooling medium continuously flows from the discharge end 2321 to the electrical connection structure 200, the electrical connection structure 200 can be continuously cooled by the cooling medium. The cooling medium after heat exchange with the electrical connection structure 200 can then flow to other positions outside the electrical connection structure 200. For example, it can flow into the structure in the housing 10 for storing the cooling medium or directly flow outside the housing 10.

[0078] When it is necessary to clean the channel structure 23 or perform maintenance, simply remove the end cover 20 from the housing 10.

[0079] In this embodiment, a channel structure 23 for the circulation of the cooling medium is provided in the housing 10, and the cooling medium can directly flow through the channel structure 23 onto the electrical connection structure 200 to achieve the effect of the cooling medium spraying on the electrical connection structure 200, so as to better cool and lower the temperature of the electrical connection structure 200. At the same time, by arranging the channel structure 23 on the end cover 20, the internal structure of the housing 10 can be simplified, which is convenient for cleaning the channel structure 23.

[0080] Reference Figure 2 , in some embodiments, the channel structure 23 includes a main channel 231 and a branch channel 232 communicating with the main channel 231. The main channel 231 includes a feed end 2311, and the feed end 2311 is connected to the supply pipe 11. The branch channel 232 includes a discharge end 2321 for the cooling medium to flow towards the electrical connection structure 200.

[0081] The main channel 231 refers to the structure in the channel structure 23 for connecting with the supply pipe 11, that is, the feed end 2311 of the channel structure 23 is on the main channel 231. After passing through the supply pipe 11, the cooling medium first enters the main channel 231 through the feed end 2311. According to the position of the channel structure 23, the main channel 231 can be provided outside the end cover 20 or formed inside the end cover 20. Along the radial direction of the main channel 231, the cross-sectional shape of the main channel 231 can be square, circular, hexagonal or other shapes. According to the relative positions of the electrical connection structure 200, the end cover 20, and the supply pipe 11, the main channel 231 can extend in a straight line or be bent as needed.

[0082] The branch channel 232 refers to the structure in the channel structure 23 that faces the electrical connection structure 200. The cooling medium can flow out from the branch channel 232 and flow to the electrical connection structure 200, that is, the discharge end 2321 of the channel structure 23 is located on the branch channel 232; one end of the branch channel 232 is communicated with the main channel 231. The branch channel 232 can be directly communicated with the main channel 231, or can be indirectly communicated with the main channel 231 through structures such as pipe joints; the other end of the branch channel 232 extends to the vicinity of the electrical connection structure 200, and the discharge end 2321 is located at this end of the branch channel 232 to facilitate the cooling medium to flow to the electrical connection structure 200; according to the position of the channel structure 23, the branch channel 232 can be arranged outside the end cover 20, or can be formed inside the end cover 20; along the radial direction of the branch channel 232, the cross-sectional shape of the branch channel 232 can be square, circular, hexagonal or other shapes; according to the relative positions of the electrical connection structure 200, the end cover 20 and the supply pipe 11, the branch channel 232 can extend in a straight line or can be bent according to needs.

[0083] There can be one branch channel 232, or there can be two or more branch channels 232. One ends of multiple branch channels 232 connected to the main channel 231 can be located at different positions, and one ends of multiple branch channels 232 facing the electrical connection structure 200 can face different positions of the electrical connection structure 200, so as to better cool the electrical connection structure 200 and improve the cooling effect.

[0084] In this embodiment, the channel structure 23 includes a main channel 231 and multiple branch channels 232, and is communicated with the supply pipe 11 through the main channel 231 so that the cooling medium can enter the channel structure 23; the cooling medium is transported to different positions of the electrical connection structure 200 through the branch channels 232 to better cool the electrical connection structure 200.

[0085] Reference Figure 2 In some embodiments, the end cover 20 includes a main body portion 21 and an extension portion 22 connected to the main body portion 21. The main channel 231 is formed inside the main body portion 21; the extension portion 22 extends from the main body portion 21 in the direction where the electrical connection structure 200 is located, and the branch channel 232 is formed inside the extension portion 22.

[0086] The main body portion 21 refers to a partial structure of the end cover 20 that covers the housing 10. The main body portion 21 covering the housing 10 can enclose the accommodation space 101 to separate the accommodation space 101 from the external environment; the extension portion 22 refers to a partial structure of the end cover 20 that extends from the main body portion 21 into the accommodation space 101. The extension portion 22 extends from the main body portion 21 in the direction where the electrical connection structure 200 is located so that one end of the extension portion 22 away from the main body portion 21 can be close to the electrical connection structure 200.

[0087] The main body part 21 and the extension part 22 can be fixedly connected by means such as welding and bonding, or can be detachably connected by means such as screwing and clamping. The main body part 21 and the extension part 22 can also be integrally formed.

[0088] The main channel 231 is formed in the main body part 21. Exemplarily, a pipe fitting can be inlaid in the end cover 20 to form the main channel 231, or a groove structure can be opened in the end cover 20 to form the main channel 231. When the end cover 20 is covered on the housing 10, the feed end 2311 of the main channel 231 can be communicated with the feed pipe 11.

[0089] The branch channel 232 is formed in the extension part 22. Exemplarily, a pipe fitting can be inlaid in the extension part 22 to form the branch channel 232, or a groove structure can be opened in the extension part 22 to form the main channel 231. When the end cover 20 is covered on the housing 10, one end of the extension part 22 facing away from the end cover 20 faces and is close to the electrical connection structure 200.

[0090] The discharge end 2321 of the branch channel 232 can correspond to one end of the extension part 22 facing away from the end cover 20. The discharge end 2321 can penetrate through the extension part 22 and be communicated with the space outside the branch channel 232, so that the cooling medium can flow from the branch channel 232 to the electrical connection structure 200. Or structures such as pipelines and through holes can be provided on the extension part 22, so that the discharge end 2321 can be indirectly communicated with the space outside the branch channel 232 through the pipeline and through hole structures, thereby facilitating the cooling medium to flow from the branch channel 232 to the electrical connection structure 200.

[0091] One end of the branch channel 232 communicating with the main channel 231 can extend into the main body part 21 to facilitate the connection between the branch channel 232 and the main channel 231. One end of the main channel 231 communicating with the branch channel 232 can also extend into the extension part 22 to facilitate the connection between the main channel 231 and the branch channel 232.

[0092] Since the cooling medium flows out of the discharge end 2321 and then flows outside the channel structure 23 and towards the electrical connection structure 200, if the discharge end 2321 is relatively far from the electrical connection structure 200, it is easy to cause part of the cooling medium not to fall on the electrical connection structure 200. Making one end of the extension part 22 far from the main body part 21 close to the electrical connection structure 200 can make the discharge end 2321 closer to the electrical connection structure 200, so that more cooling medium can fall on the electrical connection structure 200, and thus better achieve the effect of cooling and temperature reduction.

[0093] There can be one extension part 22, or two or more extension parts 22. Only one branch channel 232 can be provided in one extension part 22, or two or more branch channels 232 can be provided.

[0094] It is understandable that in addition to the main body portion 21 and the extension portion 22, the end cover 20 may further include other structures, such as a fixing portion for fixing the end cover 20 to the housing 10, etc.

[0095] In this embodiment, the end cover 20 includes the main body portion 21 and the extension portion 22, and the extension portion 22 extends in a direction close to the electrical connection structure 200, so that the discharge end 2321 of the branch channel 232 can be closer to the electrical connection structure 200, thereby enabling the cooling medium to flow to the required position of the electrical connection structure 200 better and more, reducing the amount of the cooling medium that splashes or flows to other positions, and further improving the cooling effect better.

[0096] Reference Figure 2 、 Figure 3 In some embodiments, a discharge port 221 communicating with the branch channel 232 is formed at one end of the extension portion 22 facing the electrical connection structure 200, and the inner diameter of the discharge port 221 is smaller than the inner diameter of the branch channel 232.

[0097] The discharge port 221 refers to a structure for allowing the cooling medium to flow out from the discharge end 2321 of the branch channel 232 to the outside of the channel structure 23. The discharge port 221 communicates with the branch channel 232, that is, one end of the discharge port 221 communicates with the discharge end 2321 of the branch channel 232, and the other end of the discharge port 221 communicates with the accommodation cavity. That is, the discharge port 221 is a structure provided on the extension portion 22. The discharge end 2321 of the branch channel 232 can be indirectly communicated with the space outside the branch channel 232 through the discharge port 221, so that the cooling medium can flow out from the discharge end 2321 of the branch channel 232 through the discharge port 221 to the outside of the branch channel 232.

[0098] The discharge port 221 can extend linearly or curvilinearly. For example, the extending direction of the discharge port 221 can be the same as the extending direction of the corresponding branch channel 232; along the radial direction of the discharge port 221, the cross-sectional shape of the discharge port 221 can be rectangular, circular, hexagonal or other shapes.

[0099] Reference Figure 3, in the figure, H is the inner diameter of the branch channel 232, and h in the figure is the inner diameter of the discharge port 221. The inner diameter of the discharge port 221 is smaller than that of the branch channel 232, that is, the cross-sectional area of the discharge port 221 in its radial direction is smaller than that of the branch channel 232 in its radial direction. This setting can increase the flow velocity of the cooling medium in the discharge port 221, so that when the cooling medium sprays out from the discharge port 221 to outside the channel structure 23, it can have a greater initial velocity and initial pressure, thereby enabling more cooling medium to fall on the electrical connection structure 200 and reducing the amount of cooling medium falling on other positions outside the electrical connection structure 200, and further better achieving the effect of cooling and temperature reduction.

[0100] In this embodiment, a discharge port 221 is provided on the extension part 22, and the discharge port 221 is communicated with the branch channel 232, so that the cooling medium in the branch channel 232 can be sprayed to the electrical connection structure 200 through the discharge port 221; the inner diameter of the discharge port 221 is made smaller than that of the branch channel 232 to increase the flow velocity of the cooling medium flowing through the discharge port 221, so that the cooling medium can be better sprayed to the electrical connection structure 200, reducing the amount of cooling medium flowing to other positions, and further better improving the cooling and temperature reduction effect.

[0101] Reference Figure 2 , Figure 3 , in some embodiments, the inner diameter range of the discharge port 221 is 1 mm (millimeter) to 2 mm; for example, the inner diameter of the discharge port 221 can be 1.0 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, 2.0 mm or other values.

[0102] The smaller the inner diameter of the discharge port 221, the greater the initial velocity and initial pressure when the cooling medium sprays out from the discharge port 221 to outside the channel structure 23. Then, when the cooling medium sprays to the electrical connection structure 200, it is more likely to cause more cooling medium to be sputtered to other positions, and it is easy to cause a reduction in the cooling medium attached to the electrical connection structure 200. And because the cooling medium sputtered out from the electrical connection structure 200 has a shorter contact time with the electrical connection structure 200, its heat exchange effect is poor and the cooling and temperature reduction effect is poor.

[0103] The smaller the inner diameter of the discharge port 221, the smaller the initial velocity and initial pressure when the cooling medium sprays out from the discharge port 221 to outside the channel structure 23. Then, during the process of the cooling medium spraying to the electrical connection structure 200, part of the cooling medium is not likely to fall on the electrical connection structure 200, thus easily resulting in a poor cooling and temperature reduction effect.

[0104] The inner diameter of the discharge port 221 is in the range of 1 mm to 2 mm, which can not only allow more cooling medium to be sprayed onto the electrical connection structure 200, thereby reducing the amount of cooling medium falling near the electrical connection structure 200, but also reduce the amount of cooling medium sputtering after contacting the electrical connection structure 200, thereby further improving the cooling effect.

[0105] Exemplarily, the inner diameter of the discharge port 221 is 1 mm. At this time, the cooling medium can be ejected the farthest distance to adapt to the working condition where the distance between the extension part 22 and the electrical connection structure 200 is relatively far.

[0106] Exemplarily, the inner diameter of the discharge port 221 is 1.5 mm. At this time, the cooling medium can be ejected a relatively long distance to adapt to the working condition where the distance between the extension part 22 and the electrical connection structure 200 is relatively far, and at the same time, it can also reduce the amount of cooling medium sputtering after contacting the electrical connection structure 200.

[0107] Exemplarily, the inner diameter of the discharge port 221 is 2 mm. At this time, the cooling medium can be ejected the shortest distance to further reduce the amount of cooling medium sputtering after contacting the electrical connection structure 200.

[0108] This embodiment provides the inner diameter range of the discharge port 221 to increase the flow rate of the cooling medium flowing through the discharge port 221, so that the cooling medium can be better sprayed onto the electrical connection structure 200, reduce the amount of cooling medium flowing to other positions, and at the same time, it can also reduce the amount of cooling medium sputtering from the electrical connection structure 200 to other positions, further improving the cooling efficiency.

[0109] Reference Figure 2 、 Figure 3 , in some embodiments, a buffer space 30 is provided between the extension part 22 and the electrical connection structure 200.

[0110] The buffer space 30 refers to the space set within the accommodation space 101. The buffer space 30 can be the space set in the accommodation space 101 or the space enclosed by structural members; the buffer space 30 is set between the extension part 22 and the electrical connection structure 200 so that there is a gap between the extension part 22 and the electrical connection structure 200.

[0111] Since the cooling medium has a certain speed and pressure when it is sprayed onto the electrical connection structure 200, a part of the cooling medium is likely to splash to other positions outside the electrical connection structure 200 after contacting the electrical connection structure 200. This part of the splashed cooling medium has a short contact time with the electrical connection structure 200 and poor heat exchange with the electrical connection structure 200, which easily leads to low heat exchange efficiency. At the same time, this part of the splashed cooling medium is also likely to collide with the cooling medium flowing out of the adjacent branch channel 232, resulting in mutual interference of the cooling medium and further reducing the cooling efficiency.

[0112] Accordingly, a buffer space 30 is provided between the extension part 22 and the electrical connection structure 200 to reduce the amount of the cooling medium splashing from the electrical connection structure 200 to other positions, and at the same time, it can also shorten the splashing distance of the splashed part of the cooling medium, thereby reducing the interference with the cooling medium flowing out of other branch channels 232.

[0113] In this embodiment, a buffer space 30 is provided between the extension part 22 and the electrical connection structure 200. Since the cooling medium will be partially reflected and splashed to other positions after being sprayed onto the electrical connection structure 200, the setting of the buffer space 30 can reduce the impact force of the cooling medium sprayed onto the electrical connection structure 200, thereby reducing the amount of the cooling medium splashing to other positions.

[0114] Reference Figure 2 、 Figure 3 In some embodiments, the distance range between the extension part 22 and the electrical connection structure 200 is 8 mm to 12 mm. For example, the distance between the extension part 22 and the electrical connection structure 200 can be 8 mm, 8.5 mm, 9 mm, 9.5 mm, 10 mm, 10.5 mm, 11 mm, 11.5 mm, 12 mm or other values.

[0115] The distance between the extension part 22 and the electrical connection structure 200 is the distance between the extension part 22 and the electrical connection structure 200 in the direction of the spraying speed of the cooling medium from the discharge port 221, and this distance is the Figure 3 distance shown as L in; the distance between the extension part 22 and the electrical connection structure 200 is set in the range of 8 mm to 12 mm, so that more cooling medium can fall on the electrical connection structure 200, and the amount of the cooling medium falling outside the electrical connection structure 200 can be reduced, and at the same time, the amount of the cooling medium splashing from the electrical connection structure 200 to other positions can also be reduced.

[0116] For example, the distance between the extension part 22 and the electrical connection structure 200 is 8 mm. At this time, the extension part 22 is closest to the electrical connection structure 200, and more cooling medium can fall on the electrical connection structure 200, and the amount of the cooling medium that cannot fall on the electrical connection structure 200 can be reduced.

[0117] For example, the distance between the extension part 22 and the electrical connection structure 200 is 10 mm. At this time, the extension part 22 is relatively close to the electrical connection structure 200, so that more cooling medium can fall on the electrical connection structure 200, and at the same time, the amount of the cooling medium sputtered from the electrical connection structure 200 to other positions can be reduced.

[0118] For example, the distance between the extension part 22 and the electrical connection structure 200 is 12 mm. At this time, the extension part 22 is relatively far from the electrical connection structure 200, so that the amount of the cooling medium sputtered from the electrical connection structure 200 to other positions can be better reduced.

[0119] This embodiment provides the distance between the extension part 22 and the electrical connection structure 200, so that the cooling medium can be sprayed onto the electrical connection structure 200 more and better, and at the same time, the amount of the cooling medium sputtered from the electrical connection structure 200 to other positions can be reduced.

[0120] Reference Figure 2 、 Figure 4 In some embodiments, the main body part 21 includes a first sub - part 211. An extension part 22 is provided on the first sub - part 211, and a first groove 2111 communicating with the branch channel 232 is formed on the first sub - part 211. The main body 21 part further includes a second sub - part 212 detachably connected to the first sub - part 211. The second sub - part 212 can cover the first groove 2111 to form a main channel 231 in the first groove 2111.

[0121] The first sub - part 211 refers to a partial structure of the main body part 21. The first sub - part 211 can have various shapes and various sizes. According to the structure of the main body part 21, the shape of the first sub - part 211 can be square, circular, hexagonal or other shapes; the material of the first sub - part 211 can include metal, plastic or other materials.

[0122] A first groove 2111 is formed on the first sub - part 211. Along the radial direction of the first groove 2111, the cross - sectional shape of the first groove 2111 can be square, circular, trapezoidal or other shapes.

[0123] The extension part 22 is connected to the first sub - part 211, and the first groove 2111 can communicate with the branch channel 232, that is, the cooling medium can flow into the branch channel 232 through the first groove 2111.

[0124] Similar to the first sub - part 211, the second sub - part 212 refers to a partial structure of the main body part 21. The second sub - part 212 can have various shapes and various sizes. According to the structure of the main body part 21, the shape of the second sub - part 212 can be square, circular, hexagonal or other shapes; the material of the second sub - part 212 can include metal, plastic or other materials; the second sub - part 212 is detachably connected to the first sub - part 211. By way of example, the second sub - part 212 can be detachably connected to the first sub - part 211 by screwing, clamping or other means.

[0125] The second sub - part 212 can cover the first groove 2111 and close the first groove 2111. At this time, the main channel 231 is formed in the first groove 2111. The cooling medium can flow into the first groove 2111 through the feed pipe and flow into the branch channel 232 through the first groove 2111.

[0126] Since the main channel 231 is formed by the second sub - part 212 covering the first groove 2111, removing the second sub - part 212 can expose the first groove 2111 to the outside, which is convenient for the staff to clean the main channel 231 and is also convenient for cleaning the branch channel 232.

[0127] It can be understood that a second groove 2121 can also be opened on the side of the second sub - part 212 facing the first sub - part 211. When the second sub - part 212 is connected to the first sub - part 211, the second groove 2121 can be opposite to and communicate with the first groove 2111. At this time, the main channel 231 is formed in the first groove 2111 and the second groove 2121. This setting can increase the inner diameter of the main channel 231 and can also reduce the thickness of the first sub - part 211.

[0128] In the technical solution of this embodiment, the main body part 21 includes the first sub - part 211 and the detachable second sub - part 212, and the second sub - part 212 covers the first groove 2111 to form the main channel 231, so as to facilitate the disassembly and installation of the second sub - part 212, and is also convenient for cleaning the main channel 231 and the branch channel 232.

[0129] Reference Figure 1 , in some embodiments, the end cap 20 is provided on one side of the housing 10, and the branch channel 232 extends in the horizontal direction.

[0130] The end cap 20 is provided on one side of the housing 10, that is, the end cap 20 is located on the circumferential side of the housing 10, rather than on the upper or lower end of the housing 10. At this time, the end cap 20 can be removed from the side of the housing 10, and it is also convenient to adjust the orientation of the end cap 20 to avoid interference that may be caused by external structures to the disassembly of the end cap 20.

[0131] The branch channel 232 extending in the horizontal direction enables the initial velocity of the cooling medium when it sprays out from the discharge port 221 to be in the horizontal direction. Compared with the case where the branch channel 232 extends in the vertical direction, this setting enables the cooling medium to have a larger coverage area after being sprayed out from the branch channel 232, so as to cover more parts of the electrical connection structure 200, thereby cooling and lowering the temperature of the electrical connection structure 200 better and more comprehensively. At the same time, when the cooling medium sprays out in the horizontal direction with a larger coverage area, it will also disperse the pressure of the cooling medium and reduce the amount of sputtering after the cooling medium contacts the electrical connection structure 200, thus better achieving the effect of cooling and lowering the temperature.

[0132] This embodiment provides a relative position between the end cap 20 and the housing 10. Setting the end cap 20 on the side of the housing 10 can facilitate the staff to better disassemble and install the end cap 20, and can also reduce the interference of other structures outside the housing 10 on the installation and disassembly of the end cap 20.

[0133] Reference Figure 2 , in some embodiments, the inner diameter of the end of the feed pipe 11 connected to the channel structure 23 tapers towards the direction where the channel structure 23 is located, that is, along the flow direction of the cooling medium, the inner diameter of the end of the feed pipe 11 connected to the channel structure 23 gradually decreases; so as to gradually increase the flow rate and pressure of the flowing cooling medium.

[0134] The feed pipe 11 tapering towards the direction where the channel structure 23 is located can form a smooth inner wall on the inner wall of the feed pipe 11. At this time, the end of the feed pipe 11 connected to the channel structure 23 is a structure similar to a cone; the feed pipe 11 tapering towards the direction where the channel structure 23 is located can also form a stepped structure on the inner wall of the feed pipe 11. At this time, the end of the feed pipe 11 connected to the channel structure 23 is a structure similar to a stepped hole; it can be understood that the end of the feed pipe 11 connected to the channel structure 23 can also be other structures.

[0135] Since there is a distance between the discharge end 2321 of the branch channel 232 and the electrical connection structure 200, tapering the inner diameter of the connection between the feed pipe 11 and the channel structure 23 towards the direction where the channel structure 23 is located can increase the flow rate and pressure of the flowing cooling medium, so that the cooling medium has a farther spraying distance after spraying out from the discharge end 2321, so that more cooling medium can fall on the electrical connection structure 200 and reduce the amount of cooling medium falling outside the electrical connection structure 200, thereby improving the effect of cooling and lowering the temperature.

[0136] In this embodiment, one end of the feeding pipe 11 communicating with the channel structure 23 is tapered to increase the flow rate of the cooling medium entering the channel structure 23 and increase the pressure of the cooling medium in the channel structure 23, so that the cooling medium can be better sprayed onto the electrical connection structure 200, reducing the amount of the cooling medium flowing to other positions, and thus better improving the cooling effect.

[0137] Reference Figure 2 , in some embodiments, the electrical connection structure 200 includes a first connector 40 and a second connector 50. At least a part of the first connector 40 is connected to the second connector 50, and the discharge end 2321 faces the connection part of the first connector 40 and the second connector 50.

[0138] The first connector 40 is a structure in the electrical connection structure 200 for connecting to other electrical components. The first connector 40 can have various shapes and various dimensions. For example, the shape of the first connector 40 can be square, circular, hexagonal or other regular shapes, and the shape of the first connector 40 can also be L-shaped, U-shaped or other irregular shapes; since the electrical connection structure 200 is used to transfer current between electrical components, the first connector 40 should have electrical conductivity, and the material of the first connector 40 can include conductive metal, conductive rubber or other materials with electrical conductivity. For example, the material of the first connector 40 includes copper.

[0139] There can be one first connector 40, or two or more; multiple first connectors 40 can be connected to the same electrical component, or can be respectively connected to different electrical components.

[0140] Similar to the first connector 40, the second connector 50 is a structure in the electrical connection structure 200 for connecting to other electrical components. The second connector 50 can have various shapes and various dimensions. For example, the shape of the second connector 50 can be square, circular, hexagonal or other regular shapes, and the shape of the second connector 50 can also be L-shaped, U-shaped or other irregular shapes; since the electrical connection structure 200 is used to transfer current between electrical components, the second connector 50 should have electrical conductivity, and the material of the second connector 50 can include conductive metal, conductive rubber or other materials with electrical conductivity. For example, the material of the second connector 50 includes copper.

[0141] There can be one second connector 50, or two or more; multiple second connectors 50 can be connected to the same electrical component, or can be respectively connected to different electrical components.

[0142] The number of the first connectors 40 and the second connectors 50 may be the same, in which case the first connectors 40 and the second connectors 50 correspond to each other one by one; the number of the first connectors 40 and the second connectors 50 may also be different, in which case multiple second connectors 50 may be connected to any one of the first connectors 40, and multiple first connectors 40 may also be connected to any one of the second connectors 50.

[0143] At least a part of the first connector 40 is connected to the second connector 50 so that the first connector 40 and the second connector 50 can be electrically connected to each other, enabling current to be transmitted between the first connector 40 and the second connector 50; for example, one end of the first connector 40 may be connected to the motor, the other end of the first connector 40 is connected to the second connector 50, and the other end of the second connector 50 may be connected to the controller.

[0144] Due to the contact resistance between the first connector 40 and the second connector 50, the connection part of the first connector 40 and the second connector 50 is more likely to generate heat. Orienting the discharge end 2321 towards the connection part of the first connector 40 and the second connector 50 enables the cooling medium to at least flow to the connection part of the first connector 40 and the second connector 50, so as to specifically reduce the temperature of the more severely heated part in the electrical connection structure 200, thereby better cooling and reducing the temperature of the electrical connection structure 200.

[0145] This embodiment provides some specific structures of the electrical connection structure 200, such that the electrical connection structure 200 includes the first connector 40 and the second connector 50 connected to each other, facilitating the transmission of electrical energy by the electrical connection structure 200 and facilitating the installation, replacement, and maintenance of the electrical connection structure 200; at the same time, enabling the cooling medium to at least flow to the connection part of the first connector 40 and the second connector 50. Since the connection part of the two usually generates more heat, this setting can better cool and reduce the temperature of the high-heat generation positions in the electrical connection structure 200, thereby better reducing the risk of the electrical connection structure 200 and improving the safety performance.

[0146] Reference Figure 2 、 Figure 3 Referring to

[0147] The end cover 20 includes a main body portion 21 and four extension portions 22, and the four extension portions 22 all extend in the horizontal direction; a main channel 231 is provided in the main body portion 21, and a branch channel 232 communicating with the main channel 231 is provided in each extension portion 22; a discharge port 221 is formed at one end of the extension portion 22 away from the main body portion 21, one end of the discharge port 221 is communicated with the corresponding branch channel 232, and the other end of the discharge port 221 is communicated with the space outside the branch channel 232, and the inner diameter of the discharge port 221 is smaller than the inner diameter of the branch channel 232.

[0148] A feeding pipe 11 is provided in the housing 10, the feeding pipe 11 is communicated with the main channel 231, and the inner diameter of the end of the feeding pipe 11 communicated with the main channel 231 gradually decreases in the direction towards the main channel 231.

[0149] The electrical connection structure 200 includes four first connectors 40 and four second connectors 50, the four first connectors 40 and the four second connectors 50 are connected in a one-to-one correspondence, one end of each first connector 40 is connected to the motor, and the other end of each first connector 40 is connected to the corresponding second connector 50, and the other end of each second connector 50 is connected to the controller.

[0150] In a second aspect, some embodiments of the present application further provide a drive assembly 1000, including the cooling structure 100 provided by some embodiments of the first aspect. The drive assembly 1000 further includes a motor and a controller, and the motor and the controller are electrically connected through the electrical connection structure 200.

[0151] The motor may refer to a structure in the drive assembly 1000 that provides power to drive the wheels to rotate, or the motor may also refer to a structure in the drive assembly 1000 that supplies power to other electrical components; the controller refers to a structure in the drive assembly 1000 that controls the motor.

[0152] The motor and the controller are electrically connected through the electrical connection structure 200, that is, the electrical connection structure 200 is respectively connected to the motor and the controller. The electrical connection structure 200 may be directly connected to the motor and the controller, or may be indirectly connected to the motor and the controller through an intermediate circuit (such as a voltage transformation circuit, etc.); the electrical connection structure 200 may transmit the electrical signal of the controller to the motor, or may transmit the electrical signal of the motor to the controller.

[0153] The motor and the controller may both be located inside the housing 10 and accommodated in the accommodation space 101, or the motor and the controller may be located at other positions.

[0154] In this embodiment, the cooling medium can flow through the feed pipe 11 and the channel structure 23 to the electrical connection structure 200. During the operation of the electrical connection structure 200, the cooling medium can continuously spray the electrical connection structure 200 to reduce the temperature of the electrical connection structure 200, thereby improving the stability of the electrical connection structure 200 and reducing the occurrence of failures of the electrical connection structure 200.

[0155] In a third aspect, some embodiments of the present application further provide a vehicle, including the drive assembly 1000 provided by some embodiments of the second aspect. The drive assembly 1000 can provide power for the wheels or other structures of the vehicle.

[0156] Exemplarily, the vehicle can be an electric vehicle. At this time, the drive assembly 1000 can be an electric drive axle of the electric vehicle and is used to provide power for the wheels of the vehicle.

[0157] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not intended 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 for some or all of the technical features. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be covered by 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 cooling structure for cooling an electrical connection structure, characterized in that: The cooling structure comprises: A housing, wherein a receiving space is provided in the housing, wherein the receiving space is used to receive the electrical connection structure, and wherein a supply pipe is also provided in the housing to connect to a cooling medium supply source; An end cover is covered on the shell, and a channel structure is provided on the end cover. The channel structure includes a feed end and a discharge end. The feed end is connected to the feed pipe, and the discharge end faces the electrical connection structure so that the cooling medium flows to the electrical connection structure.

2. The cooling structure according to claim 1, characterized in that: The channel structure includes a main channel and a branch channel communicating with the main channel, the main channel includes the feed end, and the feed end is communicated with the feed pipe; The branch channel includes a discharge end for the cooling medium to flow toward the electrical connection structure.

3. The cooling structure according to claim 2, characterized in that: The end cover includes a main body and an extension portion connected to the main body, the main channel is formed in the main body; the extension portion extends from the main body to the direction where the electrical connection structure is located, and the branch channel is formed in the extension portion.

4. The cooling structure according to claim 3, characterized in that: An outlet communicated with the branch channel is formed at one end of the extension portion facing the electrical connection structure, and an inner diameter of the outlet is smaller than an inner diameter of the branch channel.

5. The cooling structure according to claim 4, characterized in that: The inner diameter of the discharge port ranges from 1 mm to 2 mm.

6. The cooling structure according to claim 3, characterized in that: A buffer space is provided between the extension portion and the electrical connection structure.

7. The cooling structure according to claim 6, characterized in that: The distance between the extension portion and the electrical connection structure ranges from 8 mm to 12 mm.

8. The cooling structure according to claim 3, characterized in that: The main body comprises a first sub-section, the first sub-section is provided with the extension section, and the first sub-section is provided with a first groove communicating with the branch channel; The main body also includes a second sub-section detachably connected to the first sub-section, and the second sub-section can cover the first groove to form the main channel in the first groove.

9. The cooling structure according to claim 2, characterized in that: The end cover is arranged on one side of the shell, and the branch channel extends in a horizontal direction.

10. The cooling structure according to any one of claims 1 to 9, characterized in that: The inner diameter of one end of the feed pipe connected to the channel structure gradually decreases toward the direction where the channel structure is located.

11. The cooling structure according to any one of claims 1 to 9, characterized in that: The electrical connection structure includes a first connection member and a second connection member, wherein at least a portion of the first connection member is connected to the second connection member, and the discharge end faces a connection portion between the first connection member and the second connection member.

12. A drive assembly, characterized in that: It comprises a cooling structure, a motor and a controller as claimed in any one of claims 1 to 11; The electric motor and the controller are electrically connected via the electrical connection structure.

13. A vehicle, characterized in that: Comprising the drive assembly as claimed in claim 12.

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