Housing, electric drive apparatus, electric drive system, and electric device

Abstract

The present application provides a housing (100), an electric drive apparatus (10), an electric drive system (1), and an electric device. The housing (100) comprises a housing body (110) and a heat conducting component (120); the housing body (110) is provided with a first cavity (111) and a second cavity (112); the first cavity (111) is used for accommodating a component to be cooled; the heat conducting component (120) is provided within the second cavity (112); the heat conducting component (120) is configured to separate the second cavity (112) into a first channel (1121) and a second channel (1122); the first channel (1121) is used for accommodating a first cooling medium so as to absorb heat of the component to be cooled, and the second channel (1122) is used for accommodating a second cooling medium so as to absorb heat of the first cooling medium.

Description

Housing, electric drive unit, electric drive system and electric equipment

[0001] Cross-referencing

[0002] This application incorporates Chinese Patent Application No. 202421608111.6, filed on July 8, 2024, entitled “Housing, Electric Drive Device, Electric Drive System and Electric Equipment”, which is incorporated herein by reference in its entirety. Technical Field

[0003] This application belongs to the field of electric drive technology, and more specifically, relates to a housing, an electric drive device, an electric drive system, and an electric equipment. Background Technology

[0004] With increasing environmental pollution, new energy vehicles are gaining popularity. The electric drive system, as the power unit of new energy vehicles, converts electrical energy from the battery into mechanical energy to propel the vehicle. For new energy vehicles, electric drive technology is a crucial factor in their development.

[0005] Electric drive systems typically consist of a motor assembly and a transmission assembly. Both generate heat during operation, necessitating a cooling system to dissipate this heat. However, the large space required for this cooling system results in a bulky electric drive system, hindering miniaturization design. Summary of the Invention

[0006] The purpose of this application is to provide a housing, an electric drive device, an electric drive system, and an electric device to solve the technical problem of the large size of electric drive devices in related technologies.

[0007] To achieve the above objectives, the technical solution adopted in this application embodiment is: to provide a housing, comprising:

[0008] The housing has a first cavity and a second cavity, the first cavity being used to accommodate the component to be cooled;

[0009] A heat-conducting element is disposed in the second cavity. The heat-conducting element is configured to divide the second cavity into a first channel and a second channel. The first channel is used to contain a first cooling medium to absorb heat from the component to be cooled, and the second channel is used to contain a second cooling medium to absorb heat from the first cooling medium.

[0010] The housing provided in this application embodiment has at least the following beneficial effects: The housing provided in this application embodiment uses a heat-conducting component to divide the second cavity of the housing into a first channel and a second channel. A first cooling medium can be introduced into the first channel, and a second cooling medium can be introduced into the second channel. During operation, the first cooling medium can absorb the heat of the component to be cooled, and the heat of the first cooling medium can be transferred to the second cooling medium through the heat-conducting component to achieve heat exchange between the first cooling medium and the second cooling medium. In this way, there is no need to set up an additional heat exchange mechanism, reducing the space occupied by the cooling structure, thereby effectively reducing the volume of the electric drive device using the above-mentioned housing.

[0011] In some embodiments of this application, the heat-conducting element includes a heat-conducting body and a first protrusion. The heat-conducting body is configured to divide a second cavity into a first channel and a second channel. The first protrusion is connected to the side of the heat-conducting body facing the first channel or the second channel.

[0012] By adopting the above technical solution, the heat conduction area of ​​the heat-conducting component is effectively increased, thereby effectively improving the heat exchange efficiency between the first cooling medium and the second cooling medium.

[0013] In some embodiments of this application, the number of first protrusions is multiple.

[0014] By adopting the above technical solution, the heat conduction area of ​​the heat-conducting component is further increased, thereby further improving the heat exchange efficiency between the first cooling medium and the second cooling medium.

[0015] In some embodiments of this application, the heat-conducting element further includes a second protrusion, the first protrusion being connected to the side of the heat-conducting body facing the first channel, and the second protrusion being connected to the side of the heat-conducting body facing the second channel.

[0016] By adopting the above technical solution, the heat conduction area of ​​the heat-conducting component is further increased, thereby further improving the heat exchange efficiency between the first cooling medium and the second cooling medium.

[0017] In some embodiments of this application, the number of second protrusions is multiple.

[0018] By adopting the above technical solution, the heat conduction area of ​​the heat-conducting component is further increased, thereby further improving the heat exchange efficiency between the first cooling medium and the second cooling medium.

[0019] In some embodiments of this application, the first channel and the second channel are arranged around the first cavity.

[0020] By adopting the above technical solution, not only can the first cooling medium absorb the heat of the component to be cooled more fully, but the second cooling medium can also absorb the heat of the first cooling medium more fully, thereby effectively improving the cooling performance of the casing.

[0021] In some embodiments of this application, the first channel has a first inlet and a first outlet, the first inlet being used to input a first cooling medium and the first outlet being used to output the first cooling medium; and / or, the second channel has a second inlet and a second outlet, the second inlet being used to input a second cooling medium and the second outlet being used to output the second cooling medium.

[0022] By adopting the above technical solution, the first cooling medium and the second cooling medium can circulate in the first channel and the second channel respectively, thereby effectively improving the cooling performance of the outer shell.

[0023] In some embodiments of this application, the first cavity has a central axis; the first channel and the second channel are axially spaced along the central axis; or, the second channel is located on the side of the first channel opposite to the central axis.

[0024] By adopting the above technical solution, the layout structure of the first and second channels is effectively optimized, thereby effectively improving the space utilization rate of the shell.

[0025] In some embodiments of this application, the housing further includes a first seal, which is disposed between the housing and the heat-conducting element to seal the connection between the housing and the heat-conducting element.

[0026] By adopting the above technical solution, the gap between the shell and the heat-conducting component is effectively sealed, which effectively reduces the risk of the first cooling medium leaking into the second channel or the second cooling medium leaking into the first channel, thereby effectively improving the reliability of the shell.

[0027] In some embodiments of this application, the housing and the heat-conducting element are integrally connected.

[0028] By adopting the above technical solution, the risk of the first cooling medium leaking into the second channel or the second cooling medium leaking into the first channel is effectively reduced, thereby effectively improving the reliability of the casing.

[0029] In some embodiments of this application, the outer casing further includes a cover that covers the second cavity to close the second cavity.

[0030] By adopting the above technical solution, the risk of leakage of the first or second cooling medium is effectively reduced, thereby effectively improving the reliability of the casing.

[0031] In some embodiments of this application, the housing further includes a second seal disposed between the cover and the heat-conducting element to seal the connection between the cover and the heat-conducting element.

[0032] By adopting the above technical solution, the risk of the first cooling medium leaking into the second channel or the second cooling medium leaking into the first channel is effectively reduced, thereby further improving the reliability of the casing.

[0033] In some embodiments of this application, the heat-conducting component is a pipe, the external space of the heat-conducting component forms a first channel, and the internal space of the heat-conducting component forms a second channel.

[0034] By adopting the above technical solution, it is easy to form the first channel and the second channel in the second cavity, and there is no need to set a sealing structure between the shell and the heat-conducting component, which effectively simplifies the structure of the shell.

[0035] In some embodiments of this application, the heat-conducting element is a coil.

[0036] By adopting the above technical solution, not only is the heat conduction area of ​​the heat-conducting component effectively increased, but the flow path of the second cooling medium is also effectively extended, thereby effectively improving the heat exchange efficiency between the first cooling medium and the second cooling medium.

[0037] This application also provides an electric drive device, including the housing described in any of the above embodiments.

[0038] The electric drive device provided in this application embodiment has at least the following beneficial effects: the electric drive device provided in this application embodiment effectively reduces the size of the electric drive device by adopting the housing described in any of the above embodiments.

[0039] This application also provides an electric drive system, including a battery and the above-mentioned electric drive device, wherein the battery is electrically connected to the electric drive device.

[0040] The electric drive system provided in this application embodiment has at least the following beneficial effects: the electric drive system provided in this application embodiment effectively reduces the size of the electric drive system by adopting the above-mentioned electric drive device.

[0041] This application also provides an electric device, including the above-described electric drive system.

[0042] The electric device provided in this application embodiment has at least the following beneficial effects: the electric device provided in this application embodiment adopts the above-mentioned electric drive system, thereby effectively optimizing the internal space layout structure of the electric device and improving the space utilization rate of the electric device. Attached Figure Description

[0043] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0044] Figure 1 is a structural schematic diagram of the vehicle provided in an embodiment of this application;

[0045] Figure 2 is a schematic diagram of the exploded structure of the battery provided in an embodiment of this application;

[0046] Figure 3 is a schematic diagram of the structure of the outer casing provided in an embodiment of this application;

[0047] Figure 4 is a schematic cross-sectional view of the outer shell shown in Figure 3 along line AA.

[0048] Figure 5 is an enlarged structural diagram of section B of the outer shell shown in Figure 4;

[0049] Figure 6 is a schematic diagram of the heat-conducting component in the outer casing shown in Figure 4;

[0050] Figure 7 is a schematic diagram of the shell structure from one perspective according to another embodiment of this application;

[0051] Figure 8 is a schematic cross-sectional view of the outer shell shown in Figure 7 along the CC line.

[0052] Figure 9 is a schematic diagram of the outer shell shown in Figure 7 from another perspective;

[0053] Figure 10 is a schematic cross-sectional view of the outer shell shown in Figure 9 along the DD line.

[0054] Figure 11 is an enlarged structural diagram of the outer shell shown in Figure 10 at point E;

[0055] Figure 12 is a schematic diagram of the structure of the outer casing provided in another embodiment of this application;

[0056] Figure 13 is an enlarged structural diagram of the outer shell at point F shown in Figure 12;

[0057] Figure 14 is a structural schematic diagram of the outer casing provided in another embodiment of this application;

[0058] Figure 15 is a schematic diagram of the structure of the shell shown in Figure 14;

[0059] Figure 16 is a schematic diagram of the assembly structure of the heat-conducting component and the cover in the outer shell shown in Figure 14.

[0060] In the figures, the following labels are used: 1. Electric drive system; 10. Electric drive device; 100. Outer shell; 110. Housing; 111. First cavity; 1111. Central axis; 112. Second cavity; 1121. First channel; 11211. First inlet; 11212. First outlet; 1122. Second channel; 11221. Second inlet; 11222. Second outlet; 120. Heat-conducting component; 121. Heat-conducting body; 122. First protrusion; 123. Second protrusion; 124. First limiting groove; 125. Second limiting groove; 130. Cover; 140. First sealing component; 150. Second sealing component; 20. Battery; 21. Battery box; 211. First part; 212. Second part; 22. Battery cell; 2. Vehicle body. Detailed Implementation

[0061] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0062] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0063] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0064] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0065] As the power unit of new energy vehicles, the electric drive system typically includes a housing, a motor assembly, and a transmission assembly. The housing houses the motor assembly and the transmission assembly. The motor assembly is the power source of the electric drive system, converting electrical energy into mechanical energy. The transmission assembly transmits this mechanical energy to the wheels of the new energy vehicle by changing the speed and torque of the motor assembly, thereby driving the vehicle. During the operation of the electric drive system, both the motor assembly and the transmission assembly generate heat; therefore, a cooling structure is required to cool them.

[0066] In related technologies, cooling structures typically include several cooling channels or cooling cavities disposed on the housing, with at least one cooling channel or cooling cavity corresponding to the motor assembly and at least another cooling channel or cooling cavity corresponding to the transmission assembly. The cooling structure also includes a heat exchange mechanism, which is typically disposed on the outer side of the housing. During the operation of the electric drive device, the cooling medium absorbs heat from the motor assembly and transmission assembly as it flows through the aforementioned cooling channels or cooling cavities, causing the temperature of the cooling medium to rise. The heated cooling medium is then introduced into the heat exchange mechanism, where it absorbs heat again to lower its temperature. The cooled cooling medium then flows through the aforementioned cooling channels or cooling cavities again, and this cycle repeats to cool the motor assembly and transmission assembly.

[0067] However, since the heat exchange mechanism is located on the outside of the shell, it protrudes beyond the outer contour boundary of the shell, resulting in an increase in the size of the electric drive device, which is not conducive to the miniaturization design of the electric drive device.

[0068] To reduce the size of the electric drive device, the housing provided in this application uses a heat-conducting component to divide the second cavity of the housing into a first channel and a second channel. A first cooling medium can be introduced into the first channel, and a second cooling medium can be introduced into the second channel. During operation, the first cooling medium can absorb the heat from the motor assembly or the transmission assembly, and the heat from the first cooling medium can be transferred to the second cooling medium through the heat-conducting component to achieve heat exchange between the first and second cooling media. In this way, there is no need to set up an additional heat exchange mechanism, reducing the space occupied by the cooling structure, thereby effectively reducing the size of the electric drive device using the above-mentioned housing.

[0069] The technical solutions described in this application are applicable to electric drive devices and electric equipment using electric drive devices. Electric equipment can be, but is not limited to, vehicles, ships, spacecraft, and electric toys, etc. Vehicles can be gasoline-powered vehicles, natural gas-powered vehicles, or new energy vehicles; new energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. Spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc. Electric toys include stationary or mobile electric toys, such as electric car toys, electric ship toys, and electric airplane toys, etc. For ease of explanation, the following embodiments use a vehicle as an example of the electric equipment in one embodiment of this application.

[0070] For ease of explanation, the following embodiments will use a vehicle as an example of an electrical device according to an embodiment of this application.

[0071] Please refer to Figure 1, which is a structural schematic diagram of the vehicle provided in this embodiment. The vehicle includes a body 2, a battery 20, and an electric drive unit 10. The body 2 is the main supporting component of the vehicle, and has an engine compartment and a passenger compartment. The engine compartment is used to house the electric drive unit 10, and the passenger compartment provides operating and seating space for the driver and passengers. When the vehicle is a front-wheel drive vehicle, the engine compartment is located at the front of the body 2, i.e., the engine compartment is the front engine compartment; when the vehicle is a rear-wheel drive vehicle, the engine compartment is located at the rear of the body 2, i.e., the engine compartment is the rear engine compartment; when the vehicle is a four-wheel drive vehicle, the engine compartment is divided into a front engine compartment and a rear engine compartment, with the front engine compartment located at the front of the body 2 and the rear engine compartment located at the rear of the body 2. There can be two electric drive units 10, with the two electric drive units 10 located in the front engine compartment and the rear engine compartment, respectively. The battery 20 and the electric drive unit 10 together constitute the electric drive system 1 of the vehicle. The battery 20 can be located at the bottom, front, or rear of the vehicle. The battery 20 can supply power to the electric drive unit 10 to drive the electric drive unit 10. The electric drive unit 10 is used to convert the electrical energy provided by the battery 20 into mechanical energy and output the mechanical energy to the wheels of the vehicle to drive the vehicle.

[0072] Please refer to Figure 2, which is an exploded view of the battery 20 provided in an embodiment of this application. The battery 20 includes a battery case 21 and a battery cell 22, with the battery cell 22 housed within the battery case 21. The battery case 21 provides a space for the battery cell 22 and can have various structures. In some embodiments, the battery case 21 may include a first portion 211 and a second portion 212, which overlap each other, jointly defining a space for accommodating the battery cell 22. The second portion 212 may be a hollow structure with one open end, and the first portion 211 may be a plate-like structure, covering the open side of the second portion 212 so that the first portion 211 and the second portion 212 jointly define the space. Alternatively, the first portion 211 and the second portion 212 may both be hollow structures with one open side, with the open side of the first portion 211 covering the open side of the second portion 212 so that the first portion 211 and the second portion 212 jointly define the space. Of course, the battery box 21 formed by the first part 211 and the second part 212 can be of various shapes, such as cylinder, cuboid, etc., and no specific limitation is made here.

[0073] In some embodiments, the battery box 21 may be part of the vehicle's chassis structure. For example, a portion of the battery box 21 may be at least a portion of the vehicle's floor, or a portion of the battery box 21 may be at least a portion of the vehicle's crossbeams and longitudinal beams.

[0074] Of course, in some embodiments, the battery 20 may not include the battery box 21, but rather multiple battery cells 22 are electrically connected and assembled into the vehicle after being formed into a whole by necessary fixing structures.

[0075] In battery 20, there can be multiple battery cells 22, which can be connected in series, parallel, or in a mixed manner. A mixed connection means that multiple battery cells 22 are connected in both series and parallel configurations. Multiple battery cells 22 can be directly connected in series, parallel, or in a mixed manner, and then the entire assembly of the multiple battery cells 22 is housed within battery box 21. Alternatively, battery 20 can also consist of multiple battery cells 22 first connected in series, parallel, or in a mixed manner to form a battery module, and then multiple battery modules connected in series, parallel, or in a mixed manner to form a whole, which is then housed within battery box 21. Battery 20 may also include other functional components; for example, it may include a busbar for electrical connection between the multiple battery cells 22.

[0076] Each battery cell 22 can be a secondary battery cell or a primary battery cell. A secondary battery cell refers to a battery cell 22 that can be recharged to activate its active materials and continue to be used after being discharged. A primary battery cell refers to a battery cell 22 that cannot be recharged to activate its active materials and continue to be used after its electrical energy is depleted. The battery cell 22 can also be a lithium-ion battery cell, a sodium-ion battery cell, a sodium-lithium-ion battery cell, a lithium metal battery cell, a sodium metal battery cell, a lithium-sulfur battery cell, a magnesium-ion battery cell, a nickel-metal hydride battery cell, a nickel-cadmium battery cell, a lead-acid battery cell, etc., but is not limited thereto. The battery cell 22 can be a cylindrical battery cell, a prismatic battery cell, a pouch battery cell, or a battery cell 22 of other shapes. Prismatic battery cells include prismatic battery cells, blade-shaped battery cells, and multi-prismatic battery cells, such as hexagonal prismatic battery cells, etc. This application does not have any particular limitations.

[0077] The electric drive unit 10 may include a housing 100, a motor assembly, and a transmission assembly. The housing 100 houses the motor assembly and the transmission assembly. The motor assembly converts electrical energy supplied by the battery 20 into mechanical energy. The motor assembly may be, but is not limited to, an axial flux motor, a radial flux motor, a servo motor, a brushed motor, a brushless motor, etc. The transmission assembly transmits the mechanical energy to the vehicle's wheels by changing the rotational speed and torque of the motor assembly. For example, the transmission assembly may transmit the mechanical energy to the vehicle's wheels by decreasing the rotational speed and increasing the torque of the motor assembly, or by increasing the rotational speed and decreasing the torque of the motor assembly. The transmission assembly may be, but is not limited to, a gear transmission assembly, a worm gear transmission assembly, a planetary gear transmission assembly, a continuously variable transmission assembly, etc.

[0078] To illustrate the technical solutions provided in this application, the following detailed description is provided in conjunction with specific drawings and embodiments.

[0079] Firstly, referring to Figures 3 to 16, embodiments of this application provide a housing 100, including a shell 110 and a heat-conducting element 120. The shell 110 has a first cavity 111 and a second cavity 112. The first cavity 111 is used to accommodate a component to be cooled. The heat-conducting element 120 is disposed within the second cavity 112 and is configured to divide the second cavity 112 into a first channel 1121 and a second channel 1122. The first channel 1121 is used to accommodate a first cooling medium to absorb heat from the component to be cooled, and the second channel 1122 is used to accommodate a second cooling medium to absorb heat from the first cooling medium.

[0080] The housing 110 is the main body of the outer casing 100, and it provides the internal environment for the outer casing 100. The housing 110 can be a single-piece molded component or an assembled component composed of multiple parts. The material of the housing 110 can be, but is not limited to, copper, iron, aluminum, stainless steel, aluminum alloy, etc. At least a portion of this internal environment constitutes the aforementioned first cavity 111, and at least another portion constitutes the aforementioned second cavity 112. The first cavity 111 and the second cavity 112 can be interconnected, or they can be disconnected. The first cavity 111 is used to accommodate components to be cooled, which can be, but is not limited to, motor assemblies, transmission assemblies, etc.

[0081] In some embodiments, the housing 100 may further include a cover 130, which covers the housing 110 to isolate the second cavity 112 from the external environment of the housing 100.

[0082] The heat-conducting component 120 is a part used to transfer heat between the first cooling medium and the second cooling medium. Understandably, the heat-conducting component 120 is made of a heat-conducting material, which can be, but is not limited to, copper, iron, aluminum, stainless steel, aluminum alloy, etc. The heat-conducting component 120 dividing the second cavity 112 into a first channel 1121 and a second channel 1122 means that the first channel 1121 and the second channel 1122 are distributed on opposite sides of the heat-conducting component 120 and are not interconnected. That is, the first cooling medium located in the first channel 1121 cannot enter the second channel 1122, and correspondingly, the second cooling medium located in the second channel 1122 cannot enter the first channel 1121. The first cooling medium can be, but is not limited to, water, oil, mixed coolant, etc., and the second cooling medium can be, but is not limited to, water, oil, mixed coolant, etc. Of course, considering manufacturing precision, a small amount of the first cooling medium may leak into the second channel 1122, or a small amount of the second cooling medium may leak into the first channel 1121.

[0083] During the operation of the component to be cooled, a first cooling medium can be introduced into the first channel 1121 and a second cooling medium can be introduced into the second channel 1122. At least a portion of the heat of the component to be cooled is transferred to the first cooling medium. After absorbing the heat, the first cooling medium transfers the heat to the second cooling medium through the heat-conducting component 120 to reduce the temperature of the first cooling medium, so that the first cooling medium can continuously absorb the heat of the component to be cooled, thereby achieving cooling of the component to be cooled.

[0084] Of course, in other embodiments, at least another portion of the heat from the component to be cooled can also be transferred to the second cooling medium through the relevant portion of the housing 110.

[0085] The housing 100 provided in this embodiment uses a heat-conducting element 120 to divide the second cavity 112 of the housing 110 into a first channel 1121 and a second channel 1122. A first cooling medium can be introduced into the first channel 1121, and a second cooling medium can be introduced into the second channel 1122. During operation, the first cooling medium can absorb the heat of the component to be cooled, and the heat of the first cooling medium can be transferred to the second cooling medium through the heat-conducting element 120 to achieve heat exchange between the first cooling medium and the second cooling medium. In this way, there is no need to set up an additional heat exchange mechanism, reducing the space occupied by the cooling structure, thereby effectively reducing the volume of the electric drive device 10 using the above-mentioned housing 100.

[0086] In some embodiments of this application, please refer to Figures 5 and 6 together. The heat-conducting element 120 includes a heat-conducting body 121 and a first protrusion 122. The heat-conducting body 121 is configured to divide the second cavity 112 to form a first channel 1121 and a second channel 1122. The first protrusion 122 is connected to the side of the heat-conducting body 121 facing the first channel 1121 or the second channel 1122.

[0087] The heat-conducting body 121 is the main part of the heat-conducting component 120. The heat-conducting body 121 is not only used to divide the second cavity 112 to form the first channel 1121 and the second channel 1122, but also used to transfer the heat of the first cooling medium to the second cooling medium.

[0088] The first protrusion 122 can be connected to the side of the heat-conducting body 121 facing the first channel 1121 to transfer heat from the first cooling medium to the heat-conducting body 121. The first protrusion 122 can also be connected to the side of the heat-conducting body 121 facing the second channel 1122 to transfer heat from the heat-conducting body 121 to the second cooling medium. The first protrusion 122 and the heat-conducting body 121 can be integrally formed components. For example, the first protrusion 122 and the heat-conducting body 121 can be integrally formed using a casting process. Alternatively, the first protrusion 122 and the heat-conducting body 121 can be separately formed and then connected to form a whole. For example, the first protrusion 122 and the heat-conducting body 121 can be separately formed using a casting process and then welded together to form a whole. The first protrusion 122 can be, but is not limited to, a protrusion pin, a protrusion point, or a fin.

[0089] By adopting the above technical solution, the heat conduction area of ​​the heat-conducting component 120 is effectively increased, thereby effectively improving the heat exchange efficiency between the first cooling medium and the second cooling medium.

[0090] In some embodiments of this application, please refer to Figures 5 and 6 together, the number of first protrusions 122 is multiple.

[0091] The number of first protrusions 122 can be determined according to actual application needs, specifically 10, 20, 30, etc. In some embodiments, multiple first protrusions 122 can be evenly distributed on the heat-conducting body 121, for example, the spacing between each pair of adjacent first protrusions 122 is equal.

[0092] By adopting the above technical solution, the heat conduction area of ​​the heat-conducting component 120 is further increased, thereby further improving the heat exchange efficiency between the first cooling medium and the second cooling medium.

[0093] Of course, in other embodiments, the number of first protrusions 122 may also be one.

[0094] In some embodiments of this application, please refer to Figures 5 and 6 together. The heat-conducting element 120 also includes a second protrusion 123. The first protrusion 122 is connected to the side of the heat-conducting body 121 facing the first channel 1121, and the second protrusion 123 is connected to the side of the heat-conducting body 121 facing the second channel 1122.

[0095] The first protrusion 122 is connected to the side of the heat-conducting body 121 facing the first channel 1121 to transfer the heat of the first cooling medium to the heat-conducting body 121. The second protrusion 123 is connected to the side of the heat-conducting body 121 facing the second channel 1122 to transfer the heat of the heat-conducting body 121 to the second cooling medium. In other words, at least a portion of the heat of the first cooling medium can be transferred to the second cooling medium sequentially through the first protrusion 122, the heat-conducting body 121, and the second protrusion 123. At least another portion of the heat of the first cooling medium can also be directly transferred to the second cooling medium through the heat-conducting body 121. The second protrusion 123 and the heat-conducting body 121 can be integrally formed components. For example, the second protrusion 123 and the heat-conducting body 121 can be integrally formed by casting. Alternatively, the second protrusion 123 and the heat-conducting body 121 can be separately formed and then connected to form a whole. For example, the second protrusion 123 and the heat-conducting body 121 can be separately formed by casting and then welded together to form a whole. The second protrusion 123 can be, but is not limited to, a protrusion needle, a protrusion point, a fin, etc.

[0096] By adopting the above technical solution, the heat conduction area of ​​the heat-conducting component 120 is further increased, thereby further improving the heat exchange efficiency between the first cooling medium and the second cooling medium.

[0097] In some embodiments of this application, please refer to Figures 5 and 6 together, the number of second protrusions 123 is multiple.

[0098] The number of second protrusions 123 can be determined according to actual application needs, specifically 10, 20, 30, etc. In some embodiments, the multiple second protrusions 123 can be evenly distributed on the heat-conducting body 121, for example, the spacing between each pair of adjacent second protrusions 123 is equal. It should be noted that when there are multiple first protrusions 122, the distribution structure of the multiple first protrusions 122 and the distribution structure of the multiple second protrusions 123 can be the same or different.

[0099] By adopting the above technical solution, the heat conduction area of ​​the heat-conducting component 120 is further increased, thereby further improving the heat exchange efficiency between the first cooling medium and the second cooling medium.

[0100] In some embodiments of this application, please refer to Figures 3, 4, 7 and 8 together. The first channel 1121 and the second channel 1122 are arranged around the first cavity 111.

[0101] The first channel 1121 surrounding the first cavity 111 means that the first channel 1121 extends circumferentially along the first cavity 111. As an example, the first channel 1121 may completely surround the first cavity 111, meaning the annular structure formed by the first channel 1121 has no gaps. Alternatively, the annular structure formed by the first channel 1121 may have gaps, meaning the first channel 1121 extends circumferentially along the first cavity 111, and the opposite ends of the first channel 1121 are separated to form gaps.

[0102] The second channel 1122 surrounding the first cavity 111 means that the second channel 1122 extends circumferentially along the first cavity 111. As an example, the second channel 1122 can completely surround the first cavity 111, meaning the annular structure formed by the second channel 1122 has no gaps. Alternatively, the annular structure formed by the second channel 1122 can also have gaps, meaning the second channel 1122 extends circumferentially along the first cavity 111, and the opposite ends of the second channel 1122 are separated to form gaps.

[0103] Understandably, the heat-conducting element 120 is in a ring-shaped structure and is arranged around the first cavity 111 to divide the second cavity 112 into a first channel 1121 and a second channel 1122 arranged around the first cavity 111.

[0104] By adopting the above technical solution, not only can the first cooling medium absorb the heat of the component to be cooled more fully, but the second cooling medium can also absorb the heat of the first cooling medium more fully, thereby effectively improving the cooling performance of the outer casing 100.

[0105] In some embodiments of this application, please refer to FIG8. The first channel 1121 has a first inlet 11211 and a first outlet 11212. The first inlet 11211 is used to input the first cooling medium, and the first outlet 11212 is used to output the first cooling medium.

[0106] Understandably, the first cooling medium can be introduced into the first channel 1121 from the first inlet 11211 and then exit the first channel 1121 from the first outlet 11212.

[0107] In some embodiments, the first inlet 11211 and the first outlet 11212 are respectively located at opposite ends of the first channel 1121 to extend the circulation path of the first cooling medium.

[0108] In some embodiments, the housing 100 is provided with a first inlet connector and a first outlet connector, which can be disposed on the housing 110 or the cover 130. The first inlet connector is correspondingly connected to the first inlet 11211 and connected to the outlet of the external liquid supply device. The first outlet connector is correspondingly connected to the first outlet 11212 and connected to the inlet of the external liquid supply device. The first cooling medium enters the first channel 1121 from the outlet of the external liquid supply device through the first inlet 11211. After the first cooling medium flows through the first channel 1121, it returns to the external liquid supply device from the first outlet 11212 through the inlet of the external liquid supply device, and so on in a cycle.

[0109] In some other embodiments of this application, please refer to FIG8. The second channel 1122 has a second inlet 11221 and a second outlet 11222. The second inlet 11221 is used to input the second cooling medium, and the second outlet 11222 is used to output the second cooling medium.

[0110] Understandably, the second cooling medium can be introduced into the second channel 1122 from the second inlet 11221 and then exit the second channel 1122 from the second outlet 11222.

[0111] In some embodiments, the second inlet 11221 and the second outlet 11222 are respectively located at opposite ends of the second channel 1122 to extend the circulation path of the second cooling medium.

[0112] In some embodiments, the housing 100 is provided with a second inlet connector and a second outlet connector, which can be disposed on the housing 110 or on the cover 130. The second inlet connector is correspondingly connected to the second inlet 11221 and connected to the outlet of the external liquid supply device, and the second outlet connector is correspondingly connected to the second outlet 11222 and connected to the inlet of the external liquid supply device. The second cooling medium enters the second channel 1122 from the outlet of the external liquid supply device through the second inlet 11221. After the second cooling medium flows through the second channel 1122, it returns to the external liquid supply device from the second outlet 11222 through the inlet of the external liquid supply device, and so on in a cycle.

[0113] In some other embodiments of this application, please refer to FIG8. The first channel 1121 has a first inlet 11211 and a first outlet 11212. The first inlet 11211 is used to input the first cooling medium, and the first outlet 11212 is used to output the first cooling medium. The second channel 1122 has a second inlet 11221 and a second outlet 11222. The second inlet 11221 is used to input the second cooling medium, and the second outlet 11222 is used to output the second cooling medium.

[0114] By adopting the above technical solution, the first cooling medium and the second cooling medium can circulate in the first channel 1121 and the second channel 1122 respectively, thereby effectively improving the cooling performance of the outer shell 100.

[0115] In some embodiments of this application, please refer to Figures 3 and 4 together. The first cavity 111 has a central axis 1111, and the first channel 1121 and the second channel 1122 are axially spaced along the central axis 1111.

[0116] In some embodiments, the first cavity 111 is used to accommodate a motor assembly, and the central axis 1111 may coincide with the axis of rotation of the motor assembly.

[0117] In other embodiments, the first cavity 111 is used to accommodate the transmission assembly, and the central axis 1111 may coincide with the output shaft axis of the transmission assembly.

[0118] The first channel 1121 and the second channel 1122 are axially spaced along the central axis 1111. The second channel 1122 may be located on the side of the first channel 1121 facing the cover 130. In other words, the first channel 1121 is located on the side of the heat-conducting element 120 along the central axis 1111, and the second channel 1122 is located on the other side of the heat-conducting element 120 along the central axis 1111. The cover 130 covers the side of the second channel 1122 away from the heat-conducting element 120 along the central axis 1111, so as to isolate the second channel 1122 from the external environment of the outer shell 100.

[0119] In some other embodiments of this application, please refer to Figures 7 to 10 together. The second channel 1122 is disposed on the side of the first channel 1121 facing away from the central axis 1111.

[0120] The second channel 1122 being located on the side of the first channel 1121 facing away from the central axis 1111 means that the first channel 1121 and the second channel 1122 are sequentially distributed along a direction perpendicular to the central axis 1111. In some embodiments, the first channel 1121 is arranged around the first cavity 111, and the second channel 1122 is located on the outer periphery of the first channel 1121 and is arranged around the first channel 1121.

[0121] In some embodiments, the cover 130 is disposed on one side of the second cavity 112 along the axial direction of the central axis 1111 to isolate the first channel 1121 and the second channel 1122 from the external environment of the housing 100.

[0122] By adopting the above technical solution, the layout structure of the first channel 1121 and the second channel 1122 is effectively optimized, thereby effectively improving the space utilization of the outer shell 100.

[0123] In some embodiments of this application, please refer to FIG5. The housing 100 further includes a first seal 140, which is disposed between the housing 110 and the heat-conducting element 120 to seal the connection between the housing 110 and the heat-conducting element 120.

[0124] The first seal 140 is a component used to seal the gap at the connection between the heat-conducting component 120 and the housing 110. The first seal 140 can be made of a flexible material, which can be, but is not limited to, rubber, silicone, etc. Understandably, after the first seal 140 is placed between the housing 110 and the heat-conducting component 120, the housing 110 and the heat-conducting component 120 cooperate to clamp the first seal 140, thereby sealing the gap at the connection between the heat-conducting component 120 and the housing 110.

[0125] In some embodiments, the first channel 1121, the second channel 1122, and the heat-conducting element 120 are all arranged around the first cavity 111. The first channel 1121 and the second channel 1122 are axially spaced along the central axis 1111 of the first cavity 111. The number of first seals 140 is at least two. At least one first seal 140 is disposed between the inner ring side of the heat-conducting element 120 and the housing 110, and at least another first seal 140 is disposed between the outer ring side of the heat-conducting element 120 and the housing 110.

[0126] In other embodiments, the first channel 1121, the second channel 1122 and the heat-conducting element 120 are all arranged around the first cavity 111, the second channel 1122 is arranged on the side of the first channel 1121 facing away from the central axis 1111 of the first cavity 111, and the first sealing element 140 is arranged between the heat-conducting element 120 and the housing 110 along the central axis 1111.

[0127] Understandably, when the heat-conducting element 120 is disposed around the first cavity 111, the first sealing element 140 is disposed around the first cavity 111.

[0128] In some embodiments, a first limiting groove 124 is provided on the heat-conducting component 120, and a first sealing component 140 is disposed in the first limiting groove 124 to limit the position of the first sealing component 140 and reduce the risk of the first sealing component 140 detaching from the heat-conducting component 120.

[0129] Of course, in other embodiments, the first limiting groove 124 may also be formed on the housing 110.

[0130] By adopting the above technical solution, the gap between the housing 110 and the heat-conducting component 120 is effectively sealed, which effectively reduces the risk of the first cooling medium leaking into the second channel 1122 or the second cooling medium leaking into the first channel 1121, thereby effectively improving the reliability of the housing 100.

[0131] In some other embodiments of this application, please refer to Figures 9 and 10 together, the housing 110 and the heat-conducting element 120 are integrally connected.

[0132] The integral connection between the housing 110 and the heat-conducting component 120 means that after the housing 110 and the heat-conducting component 120 are connected into a whole, the housing 110 and the heat-conducting component 120 cannot be separated without damaging the connection between the housing 110 and the heat-conducting component 120.

[0133] As an example, the housing 110 and the heat-conducting component 120 are integrally formed using a casting process.

[0134] As an example, the housing 110 and the heat-conducting component 120 are welded together as a whole.

[0135] By adopting the above technical solution, the risk of the first cooling medium leaking into the second channel 1122 or the second cooling medium leaking into the first channel 1121 is effectively reduced, thereby effectively improving the reliability of the housing 100.

[0136] In some embodiments of this application, please refer to Figures 9 to 13 together. The outer casing 100 also includes a second sealing member 150, which is disposed between the cover 130 and the heat-conducting member 120 to seal and connect the cover 130 and the heat-conducting member 120.

[0137] The second seal 150 is a component used to seal the gap between the heat-conducting element 120 and the cover 130. The second seal 150 can be made of a flexible material, which can be, but is not limited to, rubber, silicone, etc. Understandably, after the second seal 150 is placed between the cover 130 and the heat-conducting element 120, the cover 130 and the heat-conducting element 120 cooperate to clamp the second seal 150, thereby sealing the gap between the heat-conducting element 120 and the cover 130.

[0138] In some embodiments, referring to Figures 10 and 11 together, the first channel 1121, the second channel 1122, and the heat-conducting element 120 are all arranged around the first cavity 111. The second channel 1122 is disposed on the side of the first channel 1121 facing away from the central axis 1111 of the first cavity 111. The cover 130 is disposed on the side of the second cavity 112 along the axial direction of the central axis 1111 to isolate the first channel 1121 and the second channel 1122 from the external environment of the outer shell 100. The heat-conducting element 120 is integrally connected to the shell 110 along the axial direction of the central axis 1111. The second sealing element 150 is disposed between the heat-conducting element 120 and the cover 130 along the other side of the central axis 1111, that is, the heat-conducting element 120 and the cover 130 cooperate to clamp the second sealing element 150 along the axial direction of the central axis 1111.

[0139] Of course, in other embodiments, the heat-conducting element 120 and the cover 130 may also cooperate to clamp the second sealing element 150 in other directions. For example, please refer to Figures 12 and 13 together. The heat-conducting element 120 and the cover 130 may cooperate to clamp the second sealing element 150 in a direction perpendicular to the axial direction of the central axis 1111.

[0140] Understandably, when the heat-conducting element 120 is arranged around the first cavity 111, the second sealing element 150 is arranged around the first cavity 111.

[0141] In some embodiments, please refer to Figures 10 and 11 together. A second limiting groove 125 is provided on the heat-conducting component 120, and a second sealing component 150 is disposed in the second limiting groove 125 to limit the position of the second sealing component 150 and reduce the risk of the second sealing component 150 detaching from the heat-conducting component 120.

[0142] Of course, in other embodiments, the second limiting groove 125 may also be formed on the cover 130.

[0143] By adopting the above technical solution, the risk of the first cooling medium leaking into the second channel 1122 or the second cooling medium leaking into the first channel 1121 is effectively reduced, thereby further improving the reliability of the housing 100.

[0144] In some embodiments of this application, please refer to Figures 14 to 16 together. The heat-conducting component 120 is a pipe. The external space of the heat-conducting component 120 forms a first channel 1121, and the internal space of the heat-conducting component 120 forms a second channel 1122.

[0145] The external space of the heat-conducting component 120 forms the first channel 1121, and the internal space of the heat-conducting component 120 forms the second channel 1122. This means that the space between the outer wall of the tube body of the heat-conducting component 120 and the cavity wall of the second cavity 112 forms the first channel 1121, and the space defined by the inner wall of the tube body forms the second channel 1122.

[0146] In some embodiments, the heat-conducting element 120 includes a heat-conducting body 121, a first protrusion 122 and a second protrusion 123. The heat-conducting body 121 constitutes the tube body described above. The first protrusion 122 is connected to the outer wall of the tube body, and the second protrusion 123 is connected to the inner wall of the tube body.

[0147] In some embodiments, the second cavity 112 and the heat-conducting element 120 are both arranged around the first cavity 111, that is, the first channel 1121 and the second channel 1122 are both arranged around the first cavity 111.

[0148] By adopting the above technical solution, it is easy to form the first channel 1121 and the second channel 1122 in the second cavity 112, and there is no need to set a sealing structure between the shell 110 and the heat-conducting component 120, which effectively simplifies the structure of the shell 100.

[0149] In some embodiments of this application, please refer to Figure 16, where the heat-conducting element 120 is a coil.

[0150] The heat-conducting component 120 can be, but is not limited to, spiral coils, U-shaped coils, etc.

[0151] By adopting the above technical solution, not only is the heat conduction area of ​​the heat conduction component 120 effectively increased, but the flow path of the second cooling medium is also effectively extended, thereby effectively improving the heat exchange efficiency between the first cooling medium and the second cooling medium.

[0152] In some embodiments of this application, the outer casing 100 includes a housing 110, a cover 130, and a heat-conducting element 120. The housing 110 has a first cavity 111 and a second cavity 112. The first cavity 111 is used to accommodate a component to be cooled. The cover 130 covers the housing 110 to isolate the second cavity 112 from the external environment of the outer casing 100. The heat-conducting element 120 is disposed within the second cavity 112 and is configured to divide the second cavity 112 into a first channel 1121 and a second channel 1122. The first channel 1121 is used to accommodate a first cooling medium to absorb heat from the component to be cooled, and the second channel 1122 is used to accommodate a second cooling medium to absorb heat from the first cooling medium. The heat-conducting component 120 includes a heat-conducting body 121, a first protrusion 122 and a second protrusion 123. The first protrusion 122 is connected to the side of the heat-conducting body 121 facing the first channel 1121, and the second protrusion 123 is connected to the side of the heat-conducting body 121 facing the second channel 1122.

[0153] By adopting the above technical solution, the first cooling medium can absorb the heat of the component to be cooled, and the heat of the first cooling medium can be transferred to the second cooling medium through the heat-conducting element 120 to achieve heat exchange between the first and second cooling media. Thus, no additional heat exchange mechanism is needed, reducing the space occupied by the cooling structure and effectively reducing the volume of the electric drive device 10 using the aforementioned housing 100. Furthermore, by providing the first protrusion 122 and the second protrusion 123 on the heat-conducting body 121, the heat-conducting area of ​​the heat-conducting element 120 is effectively increased, thereby effectively improving the heat exchange efficiency between the first and second cooling media.

[0154] Secondly, referring to FIG1, this application provides an electric drive device 10, including the housing 100 described in any of the above embodiments.

[0155] The electric drive device 10 provided in this application embodiment effectively reduces the size of the electric drive device 10 by adopting the housing 100 described in any of the above embodiments.

[0156] Thirdly, referring to Figure 1, this application embodiment provides an electric drive system 1, including a battery 20 and the aforementioned electric drive device 10, wherein the battery 20 is electrically connected to the electric drive device 10.

[0157] The electric drive system 1 provided in this application embodiment effectively reduces the size of the electric drive system 1 by using the above-mentioned electric drive device 10.

[0158] Fourthly, referring to Figure 1, this application embodiment provides an electric device including the above-described electric drive system 1.

[0159] The electric device provided in this application embodiment adopts the above-mentioned electric drive system 1, thereby effectively optimizing the internal space layout structure of the electric device and improving the space utilization rate of the electric device.

[0160] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A casing, characterized in that, include: The housing has a first cavity and a second cavity, the first cavity being used to accommodate the component to be cooled; A heat-conducting element is disposed in the second cavity, and the heat-conducting element is configured to divide the second cavity into a first channel and a second channel. The first channel is used to contain a first cooling medium to absorb heat from the component to be cooled, and the second channel is used to contain a second cooling medium to absorb heat from the first cooling medium.

2. The outer casing as claimed in claim 1, characterized in that, The heat-conducting component includes a heat-conducting body and a first protrusion. The heat-conducting body is configured to divide the second cavity into a first channel and a second channel. The first protrusion is connected to the side of the heat-conducting body facing the first channel or the second channel.

3. The outer casing as described in claim 2, characterized in that, The number of the first protrusions is multiple.

4. The outer casing as described in claim 2, characterized in that, The heat-conducting component further includes a second protrusion, wherein the first protrusion is connected to the side of the heat-conducting body facing the first channel, and the second protrusion is connected to the side of the heat-conducting body facing the second channel.

5. The outer casing as described in claim 4, characterized in that, The number of the second protrusion is multiple.

6. The outer casing as claimed in claim 1, characterized in that, The first channel and the second channel are arranged around the first cavity.

7. The outer casing as claimed in claim 1, characterized in that, The first channel has a first inlet and a first outlet, the first inlet is used to input the first cooling medium, and the first outlet is used to output the first cooling medium; And / or, The second channel has a second inlet and a second outlet, the second inlet being used to input the second cooling medium and the second outlet being used to output the second cooling medium.

8. The housing as claimed in any one of claims 1-7, characterized in that, The first cavity has a central axis; The first channel and the second channel are axially spaced along the central axis; or, The second channel is located on the side of the first channel opposite to the central axis.

9. The outer casing as claimed in claim 8, characterized in that, The housing also includes a first seal, which is disposed between the housing and the heat-conducting element to seal the connection between the housing and the heat-conducting element.

10. The housing as claimed in claim 8, characterized in that, The housing is integrally connected to the heat-conducting component.

11. The outer casing as claimed in claim 8, characterized in that, The outer casing also includes a cover that covers the second cavity to seal it.

12. The outer casing as claimed in claim 11, characterized in that, The outer casing also includes a second sealing element disposed between the cover and the heat-conducting element to seal the connection between the cover and the heat-conducting element.

13. The housing as claimed in any one of claims 1-7, characterized in that, The heat-conducting component is a pipe, the external space of the heat-conducting component forms the first channel, and the internal space of the heat-conducting component forms the second channel.

14. The outer casing as claimed in claim 13, characterized in that, The heat-conducting component is a coil.

15. An electric drive device, characterized in that, The electric drive device includes a housing as described in any one of claims 1-14.

16. An electric drive system, characterized in that, The electric drive system includes a battery and an electric drive device as described in claim 15, wherein the battery is electrically connected to the electric drive device.

17. An electric device, characterized in that, The electric device includes the electric drive system as described in claim 16.

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