Motor housing, motor assembly and vehicle

Abstract

The utility model discloses a motor casing, motor assembly and vehicle belong to vehicle technical field, and this motor casing is provided with oil inlet flow channel, oil outlet flow channel, liquid inlet flow channel, first liquid outlet flow channel and second liquid outlet flow channel, and the outlet of oil inlet flow channel is adapted to communicate with the oil inlet of oil cooler, and the import of oil outlet flow channel is adapted to communicate with the oil outlet of oil cooler, and the outlet of liquid inlet flow channel is adapted to communicate with the liquid inlet of oil cooler, and the import of first liquid outlet flow channel is adapted to communicate with the liquid outlet of oil cooler, and second liquid outlet flow channel communicates with liquid inlet flow channel, and the motor casing has fluid transmission function, can reduce the use of external pipeline, is favorable to save pipeline cost, and can reduce the connecting operation of pipeline, is favorable to assembly cost, can also reduce the occupied space of pipeline, is favorable to save the layout space of whole vehicle, is convenient for the arrangement of motor assembly in the car, and additionally can shorten the transmission path of fluid, reduce flow resistance, improve the transmission efficiency of fluid.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and more specifically, to a motor housing, a motor assembly, and a vehicle. Background Technology

[0002] In related technologies, the oil cooler of the motor assembly is connected to the vehicle's oil cooling system and water cooling system through multiple pipelines. The pipelines occupy a large amount of space in the vehicle and the fluid transmission path is long, resulting in high fluid resistance. In addition, the pipeline cost is high. Utility Model Content

[0003] This invention aims to at least partially solve one of the aforementioned technical problems in the prior art. To this end, this invention proposes a motor housing that can save overall vehicle layout space, reduce flow resistance, and save costs.

[0004] This utility model also proposes a motor assembly having the above-mentioned motor housing.

[0005] This utility model also proposes a vehicle having the above-mentioned motor assembly.

[0006] According to an embodiment of the present invention, the motor housing has an oil inlet channel, an oil outlet channel, a liquid inlet channel, a first liquid outlet channel, and a second liquid outlet channel. The outlet of the oil inlet channel is adapted to communicate with the oil inlet of the oil cooler, the inlet of the oil outlet channel is adapted to communicate with the oil outlet of the oil cooler, the outlet of the liquid inlet channel is adapted to communicate with the liquid inlet of the oil cooler, the inlet of the first liquid outlet channel is adapted to communicate with the liquid outlet of the oil cooler, and the second liquid outlet channel is connected to the liquid inlet channel.

[0007] According to the embodiment of this utility model, the motor housing has an oil inlet channel, an oil outlet channel, a liquid inlet channel, a first liquid outlet channel, and a second liquid outlet channel. This enables the motor housing to have fluid transmission function, reduces the use of external pipelines, saves pipeline costs, reduces pipeline connection operations, reduces assembly costs, reduces the space occupied by pipelines, saves overall vehicle layout space, facilitates the layout of the motor assembly in the vehicle, and shortens the fluid transmission path, reduces flow resistance, and improves fluid transmission efficiency.

[0008] According to some embodiments of the present invention, the outlet of the oil inlet channel, the inlet of the oil outlet channel, the outlet of the liquid inlet channel, and the inlet of the first liquid outlet channel are coplanar and all located on the first outer surface of the motor housing.

[0009] According to some embodiments of the present invention, the outlet of the first liquid outlet channel and the outlet of the second liquid outlet channel are coplanar and both are located on the second outer surface of the motor housing.

[0010] According to some embodiments of the present invention, the inlet of the oil inlet channel, the outlet of the oil outlet channel, and the inlet of the liquid inlet channel are all constructed as pipe insertion interfaces.

[0011] According to some embodiments of this utility model, the motor housing is a cast integral part.

[0012] According to some embodiments of this utility model, the oil inlet channel includes: a first oil inlet section and a second oil inlet section, the first oil inlet section being adapted to communicate with the oil inlet of the oil cooler through the second oil inlet section; the oil outlet channel includes: a first oil outlet section and a second oil outlet section, the first oil outlet section being adapted to communicate with the oil outlet of the oil cooler through the second oil outlet section; the liquid inlet channel includes: a first liquid inlet section and a second liquid inlet section, the first liquid inlet section being adapted to communicate with the liquid inlet of the oil cooler through the second liquid inlet section, and the first liquid inlet section also being connected to the second liquid outlet channel through the second liquid inlet section; the first liquid outlet channel includes: a first liquid outlet section and a second liquid outlet section, the first liquid outlet section being adapted to communicate with the liquid outlet of the oil cooler through the second liquid outlet section; wherein, the second oil inlet section, the second oil outlet section, the second liquid inlet section and the second liquid outlet section all extend along a first direction, and the extension directions of the first oil inlet section, the first oil outlet section, the first liquid inlet section, the first liquid outlet section and the second liquid outlet channel are all parallel to a plane perpendicular to the first direction.

[0013] According to another embodiment of the present invention, a motor assembly includes: a motor housing, an oil cooler, and a three-way valve. The motor housing is the aforementioned motor housing. The oil cooler is installed on the motor housing and has a first heat exchange chamber and a second heat exchange chamber that are thermally connected. The oil inlet and the oil outlet are both connected to the first heat exchange chamber, and the liquid inlet and the liquid outlet are both connected to the second heat exchange chamber. The three-way valve is installed on the motor housing, and the outlet of the first liquid outlet channel and the outlet of the second liquid outlet channel are respectively connected to different valve ports of the three-way valve.

[0014] According to the embodiment of the present utility model, the motor assembly has an oil inlet channel, an oil outlet channel, a liquid inlet channel, a first liquid outlet channel, and a second liquid outlet channel in its motor housing. This enables the motor housing to have a fluid transmission function, reduces the use of external pipelines, saves pipeline costs, reduces pipeline connection operations, reduces assembly costs, reduces the space occupied by pipelines, saves overall vehicle layout space, facilitates the placement of the motor assembly in the vehicle, and shortens the fluid transmission path, reduces flow resistance, and improves fluid transmission efficiency.

[0015] According to some embodiments of this utility model, the three-way valve is an electromagnetic three-way valve.

[0016] According to some embodiments of this utility model, the three-way valve has a first valve port, a second valve port, and a third valve port. The first valve port is connected to the outlet of the first liquid outlet channel, and the second valve port is connected to the outlet of the second liquid outlet channel. The three-way valve has an energized state and an de-energized state. In the energized state, the first valve port is disconnected from the third valve port, and the second valve port is connected to the third valve port. In the de-energized state, the first valve port is connected to the third valve port, and the second valve port is disconnected from the third valve port.

[0017] The vehicle according to another embodiment of the present invention includes the above-described motor assembly.

[0018] According to the vehicle of the present invention, the motor housing of the motor assembly is provided with an oil inlet channel, an oil outlet channel, a liquid inlet channel, a first liquid outlet channel, and a second liquid outlet channel. This enables the motor housing to have fluid transmission function, reduces the use of external pipelines, saves pipeline costs, reduces pipeline connection operations, reduces assembly costs, reduces the space occupied by pipelines, saves overall vehicle layout space, facilitates the placement of the motor assembly in the vehicle, and shortens the fluid transmission path, reduces flow resistance, and improves fluid transmission efficiency.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] Figure 1 This is a structural schematic diagram of the motor housing according to an embodiment of the present utility model;

[0021] Figure 2 This is a connection diagram of the motor housing, oil cooler, and three-way valve according to an embodiment of the present utility model;

[0022] Figure 3 This is a perspective view of a three-way valve according to an embodiment of the present utility model;

[0023] Figure 4 This is a perspective view of the motor assembly according to an embodiment of the present utility model.

[0024] Figure label:

[0025] Motor housing 1; oil inlet channel 11; first oil inlet section 111; second oil inlet section 112; oil outlet channel 12; first oil outlet section 121; second oil outlet section 122; liquid inlet channel 13; first liquid inlet section 131; second liquid inlet section 132; first liquid outlet channel 14; first liquid outlet section 141; second liquid outlet section 142; second liquid outlet channel 15; first outer surface 16; second outer surface 17;

[0026] 2. Oil cooler; 3. Three-way valve; 31. First valve port; 32. Second valve port; 33. Third valve port;

[0027] Motor assembly 10. Detailed Implementation

[0028] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0029] In the description of this utility model, it should be understood that the terms "upper", "lower", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model 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 utility model.

[0030] 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 utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] The following is combined with Figures 1-4 The present invention describes in detail the motor housing 1, the motor assembly 10, and the vehicle according to embodiments of the present invention.

[0033] Reference Figure 1 and Figure 2As shown, according to an embodiment of the present invention, the motor housing 1 has an oil inlet channel 11, an oil outlet channel 12, a liquid inlet channel 13, a first liquid outlet channel 14, and a second liquid outlet channel 15. The outlet of the oil inlet channel 11 is adapted to communicate with the oil inlet of the oil cooler 2, the inlet of the oil outlet channel 12 is adapted to communicate with the oil outlet of the oil cooler 2, the outlet of the liquid inlet channel 13 is adapted to communicate with the liquid inlet of the oil cooler 2, the inlet of the first liquid outlet channel 14 is adapted to communicate with the liquid outlet of the oil cooler 2, and the second liquid outlet channel 15 is connected to the liquid inlet channel 13.

[0034] Understandably, the motor housing 1 has an oil inlet channel 11, an oil outlet channel 12, a liquid inlet channel 13, a first liquid outlet channel 14, and a second liquid outlet channel 15, which enables the motor housing 1 to transmit fluids such as cooling water and cooling oil. This reduces the use of external pipelines, which helps save pipeline costs. It also reduces pipeline connection operations, which helps reduce assembly costs. Furthermore, it reduces the space occupied by pipelines, which helps save space in the vehicle layout and facilitates the placement of the motor assembly 10 inside the vehicle. In addition, it can shorten the fluid transmission path, reduce flow resistance, and improve fluid transmission efficiency.

[0035] Specifically, the inlet of the oil inlet channel 11 can be connected to the outlet of the vehicle's oil cooling system. Cooling oil in the oil cooling system can flow into the oil inlet channel 11. The cooling oil in the oil inlet channel 11 can flow into the oil cooler 2 through the outlet of the oil inlet channel 11 and the oil inlet of the oil cooler 2 in sequence. Then, the cooling oil can flow to the components inside the motor assembly 10 through the oil outlet of the oil cooler 2 to cool and lubricate the components. Then, the cooling oil can flow back to the oil cooling system through the inlet of the oil cooling system to realize the circulation of cooling oil.

[0036] The inlet of the liquid inlet channel 13 can be connected to the outlet of the vehicle's water cooling system. Cooling water in the water cooling system can flow into the liquid inlet channel 13 sequentially through the outlet of the water cooling system and the inlet of the liquid inlet channel 13. The inlet of the water cooling system can selectively connect to the outlet of the first liquid outlet channel 14 and the outlet of the second liquid outlet channel 15. When the outlet of the first liquid outlet channel 14 is connected to the inlet of the water cooling system, the outlet of the second liquid outlet channel 15 is not connected to the inlet of the water cooling system. Cooling water in the liquid inlet channel 13 can flow into the oil cooler 2 sequentially through the outlet of the liquid inlet channel 13 and the inlet of the oil cooler 2 to cool the cooling oil. Then, the cooling water can flow back to the water cooling system through the first liquid outlet channel 14 to achieve the circulation of cooling water. The cooled cooling oil can flow to the internal components of the motor assembly 10 through the oil outlet of the oil cooler 2 to lubricate the components and cool the motor assembly 10, which can effectively reduce the risk of thermal runaway of the motor assembly 10.

[0037] When the outlet of the second liquid outlet channel 15 is connected to the inlet of the water cooling system, the outlet of the first liquid outlet channel 14 is not connected to the inlet of the water cooling system. The cooling water in the inlet channel 13 can flow to the second liquid outlet channel 15 to bypass the cooling water, thereby decoupling the water circuit and the oil circuit. This prevents the cooling water from flowing into the oil cooler 2 to cool the cooling oil. Under low-temperature conditions, such as -20℃ to 0℃, the temperature of the motor assembly 10 and the cooling oil can rise rapidly. The rapid rise in the temperature of the cooling oil can reduce the viscosity of the cooling oil, improve the lubrication effect of the cooling oil, reduce mechanical friction, reduce the oil churning loss of the mechanical parts in the motor assembly 10, and reduce drag loss, thereby improving the mechanical efficiency of the motor assembly 10. At the same time, the rapid rise in the temperature of the motor assembly 10 can improve the material properties of the insulation and magnetic materials of the motor assembly 10, thereby improving the electrical and magnetic properties of the motor assembly 10, which is conducive to improving the motor efficiency and power generation efficiency.

[0038] The inlet of the water cooling system can be selectively connected to the outlet of the first liquid outlet channel 14 and the outlet of the second liquid outlet channel 15 via a three-way valve 3.

[0039] According to the embodiment of the present invention, the motor housing 1 has an oil inlet channel 11, an oil outlet channel 12, a liquid inlet channel 13, a first liquid outlet channel 14, and a second liquid outlet channel 15. This enables the motor housing 1 to have a fluid transmission function, which can reduce the use of external pipelines, save pipeline costs, reduce pipeline connection operations, reduce assembly costs, reduce the space occupied by pipelines, save vehicle layout space, facilitate the layout of the motor assembly 10 in the vehicle, and shorten the fluid transmission path, reduce flow resistance, and improve fluid transmission efficiency.

[0040] In some embodiments of this utility model, reference is made to Figure 1 As shown, the outlet of the oil inlet channel 11, the inlet of the oil outlet channel 12, the outlet of the liquid inlet channel 13, and the inlet of the first liquid outlet channel 14 are coplanar and all located on the first outer surface 16 of the motor housing 1, so that the oil cooler 2 can be connected to the motor housing 1.

[0041] It is understood that the oil cooler 2 can be installed on the first outer surface 16, and the oil cooler 2 can be in contact with the first outer surface 16. The outlet of the oil inlet channel 11 corresponds to and is connected to the oil inlet of the oil cooler 2, the inlet of the oil outlet channel 12 corresponds to and is connected to the oil outlet of the oil cooler 2, the outlet of the liquid inlet channel 13 corresponds to and is connected to the liquid inlet of the oil cooler 2, and the inlet of the first liquid outlet channel 14 corresponds to and is connected to the liquid outlet of the oil cooler 2. The motor housing 1 and the oil cooler 2 do not need to be connected by complex pipelines, which helps to reduce the connection difficulty between the motor housing 1 and the oil cooler 2, and also helps to improve the compactness of the motor assembly 10, reduce the space occupied by the motor assembly 10, facilitate the arrangement of the motor assembly 10 in the vehicle, and also helps to save pipeline costs, shorten the fluid transmission path, reduce flow resistance, and improve fluid transmission efficiency.

[0042] The motor housing 1 and the oil cooler 2 can be connected by fasteners, which can be screws, bolts and nuts. This helps to ensure the stability and reliability of the connection between the motor housing 1 and the oil cooler 2. Sealing rings can be set on the outside of the connection between the oil inlet and the outlet of the oil inlet channel 11, the outside of the connection between the oil outlet and the inlet of the oil outlet channel 12, the outside of the connection between the liquid inlet and the outlet of the liquid inlet channel 13, and the outside of the connection between the liquid outlet and the inlet of the first liquid outlet channel 14 to ensure the sealing between the motor housing 1 and the oil cooler 2 and prevent fluid leakage.

[0043] In some embodiments of this utility model, reference is made to Figure 1 As shown, the outlet of the first liquid outlet channel 14 and the outlet of the second liquid outlet channel 15 are coplanar and both are located on the second outer surface 17 of the motor housing 1, so that the motor housing 1 can be connected to the three-way valve 3.

[0044] It is understood that the three-way valve 3 can be installed on the second outer surface 17 and can fit against the second outer surface 17. The outlet of the first liquid outlet channel 14 and the outlet of the second liquid outlet channel 15 can correspond to and connect with different valve ports of the three-way valve 3. The motor housing 1 and the three-way valve 3 do not need to be connected by complex pipelines, which helps to reduce the connection difficulty between the motor housing 1 and the three-way valve 3, and also helps to improve the compactness of the motor assembly 10, reduce the space occupied by the motor assembly 10, facilitate the arrangement of the motor assembly 10 in the vehicle, and also helps to save pipeline costs, shorten the fluid transmission path, reduce flow resistance, and improve fluid transmission efficiency.

[0045] The first outer surface 16 and the second outer surface 17 are different outer surfaces and are not coplanar, which can reduce the risk of interference between the oil cooler 2 and the three-way valve 3. The motor housing 1 and the three-way valve 3 can be connected by fasteners, which can be screws, bolts and nuts. This helps to ensure the stability and reliability of the connection between the motor housing 1 and the three-way valve 3. Sealing rings can be set on the outside of the connection between the outlet of the first liquid outlet channel 14 and the valve port, and on the outside of the connection between the outlet of the second liquid outlet channel 15 and the valve port, to ensure the sealing between the motor housing 1 and the three-way valve 3 and prevent fluid leakage.

[0046] In some embodiments of this utility model, reference is made to Figure 1 As shown, the inlet of the oil inlet channel 11, the outlet of the oil outlet channel 12, and the inlet of the liquid inlet channel 13 are all constructed as pipe insertion interfaces. Specifically, the pipe insertion interface is a tubular structure protruding outward from the motor housing 1. The oil cooling system pipes can be fitted onto the inlet of the oil inlet channel 11 and the outlet of the oil outlet channel 12, and the pipes can be fixedly connected to the inlet of the oil inlet channel 11 and the outlet of the oil outlet channel 12 by pipe clamps, so that the inlet of the oil inlet channel 11 and the outlet of the oil outlet channel 12 are connected to the oil cooling system pipes. The water cooling system pipes can be fitted onto the inlet of the liquid inlet channel 13, and the pipes can be fixedly connected to the inlet of the liquid inlet channel 13 by pipe clamps, so that the inlet of the oil inlet channel 11 is connected to the water cooling system pipes. The connection method is simple, which helps to reduce the assembly difficulty of the vehicle and save the assembly time of the vehicle.

[0047] In some embodiments of this utility model, the motor housing 1 is a one-piece cast part, which reduces the seams of the motor housing 1, improves the structural strength of the motor housing 1, and enhances the sealing performance of the motor housing 1, reducing the risk of fluid leakage. In addition, the one-piece casting of the motor housing 1 reduces assembly steps and improves the production efficiency of the motor housing 1. The casting process can be die casting.

[0048] In some embodiments of this utility model, reference is made to Figure 1 As shown, the oil inlet channel 11 includes: a first oil inlet section 111 and a second oil inlet section 112. The first oil inlet section 111 is adapted to communicate with the oil inlet of the oil cooler 2 through the second oil inlet section 112. The oil outlet channel 12 includes: a first oil outlet section 121 and a second oil outlet section 122. The first oil outlet section 121 is adapted to communicate with the oil outlet of the oil cooler 2 through the second oil outlet section 122. The liquid inlet channel 13 includes: a first liquid inlet section 131 and a second liquid inlet section 132. The first liquid inlet section 131 is adapted to communicate with the liquid inlet of the oil cooler 2 through the second liquid inlet section 132. The first liquid inlet section 131 is also connected to the second liquid outlet channel 15 through the second liquid inlet section 132. The first liquid outlet channel 14 includes: a first liquid outlet section 141 and a second liquid outlet section 142. The first liquid outlet section 141 is adapted to communicate with the liquid outlet of the oil cooler 2 through the second liquid outlet section 142.

[0049] Among them, the second oil inlet section 112, the second oil outlet section 122, the second liquid inlet section 132 and the second liquid outlet section 142 all extend along the first direction. The extension directions of the first oil inlet section 111, the first oil outlet section 121, the first liquid inlet section 131, the first liquid outlet section 141 and the second liquid outlet channel 15 are all parallel to the plane perpendicular to the first direction. The axes of the first oil inlet section 111, the first oil outlet section 121, the first liquid inlet section 131, the first liquid outlet section 141 and the second liquid outlet channel 15 are coplanar. The structure of the motor housing 1 is relatively compact, which is conducive to improving the space utilization of the motor housing 1.

[0050] Understandably, referring to Figure 1 As shown, the first direction can be Figure 1 In the vertical direction, the extension direction of the first oil inlet section 111 is perpendicular to the extension direction of the second oil inlet section 112, which allows the oil inlet channel 11 to be constructed as an "L"-shaped channel. The extension direction of the first oil outlet section 121 is perpendicular to the extension direction of the second oil outlet section 122, which allows the oil outlet channel 12 to be constructed as an "L"-shaped channel. The extension direction of the first liquid inlet section 131 is perpendicular to the extension direction of the second liquid inlet section 132, which allows the liquid inlet channel 13 to be constructed as an "L"-shaped channel. The extension direction of the first liquid outlet section 141... The direction is perpendicular to the extension direction of the second liquid outlet section 142, which makes the first liquid outlet channel 14 constructed as an "L"-shaped channel. The extension direction of the second liquid outlet channel 15 is parallel to the plane perpendicular to the first direction. The second liquid outlet channel 15 is constructed as a direct flow channel. The structure of the oil inlet channel 11, oil outlet channel 12, liquid inlet channel 13, first liquid outlet channel 14 and second liquid outlet channel 15 is simple, so that they can be processed by core pulling during the casting of the motor housing 1, which helps to reduce the manufacturing difficulty of the motor housing 1.

[0051] Reference Figures 1-4 As shown, according to another embodiment of the present invention, the motor assembly 10 includes: a motor housing 1, an oil cooler 2, and a three-way valve 3. The motor housing 1 is the motor housing 1 described above. The oil cooler 2 is installed on the motor housing 1. The oil cooler 2 has a first heat exchange chamber and a second heat exchange chamber that are thermally connected. The oil inlet and the oil outlet are both connected to the first heat exchange chamber, and the liquid inlet and the liquid outlet are both connected to the second heat exchange chamber. The three-way valve 3 is installed on the motor housing 1. The outlet of the first liquid outlet channel 14 and the outlet of the second liquid outlet channel 15 are respectively connected to different valve ports of the three-way valve 3.

[0052] It should be noted that the three-way valve 3 can be configured as a two-inlet, one-outlet three-way valve 3. The outlet of the first liquid outlet channel 14 and the outlet of the second liquid outlet channel 15 are respectively connected to the two inlet valve ports of the three-way valve 3. The outlet valve port of the three-way valve 3 can be connected to the inlet of the water cooling system. By adjusting the position of the valve core of the three-way valve 3, the outlet of the first liquid outlet channel 14 and the valve port connected to the second liquid outlet channel 15 can be selectively blocked, so that the inlet of the water cooling system can be selectively connected to the outlet of the first liquid outlet channel 14 and the outlet of the second liquid outlet channel 15.

[0053] Understandably, when the valve core of the three-way valve 3 blocks the valve port connected to the second liquid outlet channel 15, the outlet of the first liquid outlet channel 14 is connected to the inlet of the water cooling system, and the outlet of the second liquid outlet channel 15 is not connected to the inlet of the water cooling system. The cooling water in the liquid inlet channel 13 can flow into the oil cooler 2 through the outlet of the liquid inlet channel 13 and the liquid inlet of the oil cooler 2 to cool the cooling oil. Then the cooling water can flow back to the water cooling system through the liquid outlet channel to realize the circulation of cooling water. The cooled oil can flow to the internal components of the motor assembly 10 through the oil outlet of the oil cooler 2 to lubricate the components and cool the motor assembly 10, which can effectively reduce the risk of thermal runaway of the motor assembly 10.

[0054] When the valve core of the three-way valve 3 blocks the valve port connected to the first liquid outlet channel 14, the outlet of the first liquid outlet channel 14 is not connected to the inlet of the water cooling system, and the outlet of the second liquid outlet channel 15 is connected to the inlet of the water cooling system. The cooling water in the inlet channel 13 can flow to the second liquid outlet channel 15 to bypass the cooling water, thereby decoupling the water circuit and the oil circuit and preventing the cooling water from flowing into the oil cooler 2 to cool the cooling oil. Under low temperature conditions, the temperature of the motor assembly 10 is conducive to the rapid rise of the cooling oil and the temperature of the motor assembly 10. The rapid rise of the cooling oil temperature can reduce the viscosity of the cooling oil, improve the lubrication effect of the cooling oil, reduce mechanical friction, and reduce the oil churning loss of the mechanical parts in the motor assembly 10, thereby improving the mechanical efficiency of the motor assembly 10. At the same time, the rapid rise of the temperature of the motor assembly 10 can improve the material properties of the insulation and magnetic materials of the motor assembly 10, thereby improving the electrical and magnetic properties of the motor assembly 10 and improving the motor efficiency.

[0055] According to the embodiment of the present utility model, the motor assembly 10 has an oil inlet channel 11, an oil outlet channel 12, a liquid inlet channel 13, a first liquid outlet channel 14, and a second liquid outlet channel 15. This enables the motor housing 1 to have a fluid transmission function, which can reduce the use of external pipelines, save pipeline costs, reduce pipeline connection operations, reduce assembly costs, reduce the space occupied by pipelines, save vehicle layout space, facilitate the layout of the motor assembly 10 in the vehicle, and shorten the fluid transmission path, reduce flow resistance, and improve fluid transmission efficiency.

[0056] In some embodiments of this utility model, the three-way valve 3 is an electromagnetic three-way valve. The electromagnetic three-way valve is driven by electromagnetic force, has a fast response speed, can quickly switch the flow direction of cooling water, and has high control precision. It can accurately control the flow direction and flow rate of cooling water, which is beneficial for precise temperature control of the motor assembly 10 and can ensure that the motor assembly 10 operates within the preset temperature range.

[0057] In some embodiments of this utility model, reference is made to Figure 3 As shown, the three-way valve 3 has a first valve port 31, a second valve port 32, and a third valve port 33. The first valve port 31 is connected to the outlet of the first liquid outlet channel 14, and the second valve port 32 is connected to the outlet of the second liquid outlet channel 15. The three-way valve 3 has an energized state and an de-energized state. In the energized state, the first valve port 31 is disconnected from the third valve port 33, and the second valve port 32 is connected to the third valve port 33. In the de-energized state, the first valve port 31 is connected to the third valve port 33, and the second valve port 32 is disconnected from the third valve port 33.

[0058] Understandably, when energized, the cooling water in the inlet channel 13 can flow into the second outlet channel 15, and then the cooling water can flow sequentially to the second valve port 32 and the third valve port 33 to bypass the cooling water, thereby decoupling the water circuit from the oil circuit and preventing the cooling water from flowing into the oil cooler 2 through the first outlet channel 14 to cool the cooling oil, which is beneficial for the cold start of the motor assembly 10.

[0059] In the power-off state, the cooling water in the inlet channel 13 can flow into the second heat exchange chamber through the outlet of the inlet channel 13 and the inlet of the oil cooler 2 in sequence. Then the cooling water can flow to the first valve port 31 and the third valve port 33 in sequence. The cooling water can exchange heat with the cooling oil in the first heat exchange chamber in the second heat exchange chamber to cool the cooling oil.

[0060] It should be noted that in the power-off state, the first valve port 31 is connected to the third valve port 33, and the second valve port 32 is disconnected from the third valve port 33. When the power supply fails, the three-way valve 3 can be kept in the power-off state to ensure that the first valve port 31 and the third valve port 33 are connected, so that the cooling water can flow smoothly into the second heat exchange chamber to cool the cooling oil. The cooled cooling oil can effectively cool the motor assembly 10, which can effectively reduce the risk of thermal runaway of the motor assembly 10 and improve the reliability of the motor assembly 10.

[0061] According to the motor assembly 10 of this utility model embodiment, the flow path of the cooling oil is: oil inlet channel 11 → first heat exchange chamber → oil outlet channel 12. Under low temperature conditions, the three-way valve 3 is energized, which allows the cooling water to bypass. That is, the flow path of the cooling water is: liquid inlet channel 13 → second liquid outlet channel 15 → second valve port 32 → third valve port 33. This facilitates a rapid increase in the temperature of the cooling oil and the motor assembly 10, improving the average electric drive efficiency by 2% to 3%. Under high temperature conditions, such as temperatures above 0°C, the three-way valve 3 is de-energized, allowing the cooling water to bypass. The flow path is: liquid inlet channel 13 → first heat exchange chamber → first oil outlet channel 14 → first valve port 31 → third valve port 33. Cooling water can enter the second heat exchange chamber of the oil cooler 2 to cool the cooling oil in the first heat exchange chamber. The cooled oil can effectively cool the motor assembly 10, reducing the risk of thermal runaway of the motor assembly 10. The three-way valve 3, oil cooler 2 and motor housing 1 are highly integrated, the fluid transmission path is short and the flow resistance is small. The three-way valve 3 is miniaturized and saves motor outlet water nozzles and pipelines, resulting in lower cost and saving overall vehicle layout space.

[0062] The vehicle according to another embodiment of the present invention includes the above-described motor assembly 10.

[0063] According to the vehicle of the present invention, the motor housing 1 of the motor assembly 10 is provided with an oil inlet channel 11, an oil outlet channel 12, a liquid inlet channel 13, a first liquid outlet channel 14 and a second liquid outlet channel 15. This enables the motor housing 1 to have a fluid transmission function, which can reduce the use of external pipelines, save pipeline costs, reduce pipeline connection operations, reduce assembly costs, reduce the space occupied by pipelines, save vehicle layout space, facilitate the layout of the motor assembly 10 in the vehicle, and shorten the fluid transmission path, reduce flow resistance and improve fluid transmission efficiency.

[0064] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0065] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A motor housing, characterized in that, The motor housing has an oil inlet channel (11), an oil outlet channel (12), a liquid inlet channel (13), a first liquid outlet channel (14), and a second liquid outlet channel (15). The outlet of the oil inlet channel (11) is adapted to communicate with the oil inlet of the oil cooler (2). The inlet of the oil outlet channel (12) is adapted to communicate with the oil outlet of the oil cooler (2). The outlet of the liquid inlet channel (13) is adapted to communicate with the liquid inlet of the oil cooler (2). The inlet of the first liquid outlet channel (14) is adapted to communicate with the liquid outlet of the oil cooler (2). The second liquid outlet channel (15) is connected to the liquid inlet channel (13).

2. The motor housing according to claim 1, characterized in that, The outlet of the oil inlet channel (11), the inlet of the oil outlet channel (12), the outlet of the liquid inlet channel (13), and the inlet of the first liquid outlet channel (14) are coplanar and all located on the first outer surface (16) of the motor housing.

3. The motor housing according to claim 2, characterized in that, The outlet of the first liquid outlet channel (14) and the outlet of the second liquid outlet channel (15) are coplanar and both are located on the second outer surface (17) of the motor housing.

4. The motor housing according to claim 2, characterized in that, The inlet of the oil inlet channel (11), the outlet of the oil outlet channel (12), and the inlet of the liquid inlet channel (13) are all constructed as pipe insertion interfaces.

5. The motor housing according to claim 1, characterized in that, The motor housing is a cast, one-piece molded part.

6. The motor housing according to any one of claims 1-5, characterized in that, The oil inlet channel (11) includes: a first oil inlet section (111) and a second oil inlet section (112), wherein the first oil inlet section (111) is adapted to communicate with the oil inlet of the oil cooler (2) through the second oil inlet section (112); The oil outlet channel (12) includes: a first oil outlet section (121) and a second oil outlet section (122), wherein the first oil outlet section (121) is adapted to communicate with the oil outlet of the oil cooler (2) through the second oil outlet section (122); The liquid inlet channel (13) includes: a first liquid inlet section (131) and a second liquid inlet section (132). The first liquid inlet section (131) is adapted to communicate with the liquid inlet of the oil cooler (2) through the second liquid inlet section (132). The first liquid inlet section (131) is also connected to the second liquid outlet channel (15) through the second liquid inlet section (132). The first liquid outlet channel (14) includes: a first liquid outlet section (141) and a second liquid outlet section (142), wherein the first liquid outlet section (141) is adapted to communicate with the liquid outlet of the oil cooler (2) through the second liquid outlet section (142); The second oil inlet section (112), the second oil outlet section (122), the second liquid inlet section (132) and the second liquid outlet section (142) all extend along the first direction, and the extension directions of the first oil inlet section (111), the first oil outlet section (121), the first liquid inlet section (131), the first liquid outlet section (141) and the second liquid outlet channel (15) are all parallel to a plane perpendicular to the first direction.

7. A motor assembly, characterized in that, include: Motor housing, wherein the motor housing is the motor housing according to any one of claims 1-6; Oil cooler (2), the oil cooler (2) is installed on the motor housing, the oil cooler (2) has a first heat exchange chamber and a second heat exchange chamber that are thermally connected, the oil inlet and the oil outlet are both connected to the first heat exchange chamber, and the liquid inlet and the liquid outlet are both connected to the second heat exchange chamber; A three-way valve (3) is installed on the motor housing. The outlet of the first liquid outlet channel (14) and the outlet of the second liquid outlet channel (15) are respectively connected to different valve ports of the three-way valve (3).

8. The motor assembly according to claim 7, characterized in that, The three-way valve (3) is an electromagnetic three-way valve.

9. The motor assembly according to claim 8, characterized in that, The three-way valve (3) has a first valve port (31), a second valve port (32) and a third valve port (33). The first valve port (31) is connected to the outlet of the first liquid outlet channel (14), and the second valve port (32) is connected to the outlet of the second liquid outlet channel (15). The three-way valve (3) has an energized state and an de-energized state. In the energized state, the first valve port (31) is disconnected from the third valve port (33), and the second valve port (32) is connected to the third valve port (33). In the de-energized state, the first valve port (31) is connected to the third valve port (33), and the second valve port (32) is disconnected from the third valve port (33).

10. A vehicle, characterized in that, Includes the motor assembly according to any one of claims 7-9.

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