Power assembly shell and vehicle

Abstract

The power assembly shell comprises a shell body, the shell body is provided with a motor cavity, a speed reducer cavity and an electric control cavity, the motor cavity and the speed reducer cavity are sequentially arranged in the axial direction, the electric control cavity is located on the sides, away from the axis in the radial direction, of the speed reducer cavity and the motor cavity, and the end, away from the axis in the radial direction, of the electric control cavity is open. According to the power assembly shell, the shell body defines three functional partitions including the motor cavity, the speed reducer cavity and the electric control cavity, a driving motor, a speed reducer, electric control components and the like can be integrated in the same shell body, the number of parts and assembly procedures can be effectively reduced, the production and manufacturing cost can be saved, and the production efficiency can be improved; the whole shell body is integrally formed, the overall structural strength can be enhanced, the working reliability and stability can be improved, meanwhile, the liquid leakage risk caused by poor sealing can be prevented, the performance and reliability of a power assembly system can be effectively improved, and the service life of the power assembly system can be effectively prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of new energy vehicles, and in particular to a power assembly shell and a vehicle. BACKGROUND

[0002] With the rapid development of the new energy vehicle industry, there is an urgent need for integration, lightweight and high economy of the electric drive system assembly. At present, the electric drive system assembly of the new energy vehicle on the market generally has low integration, the reducer, motor and electric control modules are independent of each other, resulting in a large number of parts, high development cost, and great management difficulty. In addition, the housings of the modules are usually connected by bolts, which increases the envelope size and weight, and increases the assembly process complexity, improves the production cost, and also has the risk of sealing failure at the connection, which seriously affects the performance, safety and service life of the electric drive system assembly. CONTENT OF THE UTILITY MODEL

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, one object of the present application is to provide a power assembly shell, which defines a motor cavity, a reducer cavity and an electric control cavity by a shell body, and can integrate the drive motor, reducer and electric control components in the same shell body, which can effectively reduce the number of parts and assembly processes, save production cost and improve production efficiency, the entire shell body is integrally formed, which can enhance the overall structural strength, improve the working reliability and stability, and prevent liquid leakage caused by poor sealing, and can effectively improve the performance, reliability and service life of the power assembly system.

[0004] The present application also provides a vehicle with the above power assembly shell.

[0005] According to the power assembly shell of the first aspect of the present application, the power assembly shell comprises a shell body, the shell body has a motor cavity and a reducer cavity arranged in the axial direction in sequence, and an electric control cavity located on the side of the reducer cavity and the motor cavity away from the axis in the radial direction, and the electric control cavity is open at the end away from the axis in the radial direction.

[0006] According to the power assembly shell of the present application, the motor cavity, the reducer cavity and the electric control cavity can be defined by the shell body, and the driving motor, the reducer and the electric control components are integrated in the same shell body. In the related art, the reducer, the motor and the electric control modules need to be connected by bolts, which results in a large number of parts, high development cost, great management difficulty, complex assembly process, increased production cost, and the risk of leakage of liquid and oil due to the sealing failure between the shells. The shell body of the present application is integrally formed, which can effectively reduce the number of parts and the assembly process, save the production cost and improve the production efficiency, enhance the overall structural strength, and improve the working reliability and stability. In addition, since the multiple interfaces and connecting surfaces between the module shells in the related art are cancelled, the power assembly shell of the present application can prevent the risk of liquid leakage (such as cooling liquid and lubricating oil leakage) due to poor sealing, and effectively improve the performance, reliability and service life of the power assembly system.

[0007] According to some embodiments of the present application, the shell body comprises a first shell part and a second shell part, the first shell part defines the motor cavity, and the second shell part defines the reducer cavity, and a plate body covering the reducer cavity is arranged on the second shell part near one end axially away from the first shell part, and the plate body has at least one through shaft hole.

[0008] Further, the shell body further comprises a third shell part, the third shell part comprises a bottom plate and a plurality of side plates surrounding the outer periphery of the bottom plate, and at least part of the bottom plate is configured as part of the outer periphery of the first shell part and the second shell part.

[0009] Further, a partition plate is arranged on the bottom plate and divides the electric control cavity into a first cavity and a second cavity, the first cavity is suitable for mounting a power module, and the second cavity is suitable for mounting a capacitor module.

[0010] In some embodiments, a plurality of spaced support protrusions are arranged on the bottom plate to support the power module and / or the capacitor module.

[0011] According to some embodiments of the present application, an electric control cooling circuit for cooling the power module and / or the capacitor module is arranged in the third shell part, the electric control cooling circuit comprises an inlet pipe and an outlet pipe, the inlet pipe is arranged on any one of the side plates, and the outlet pipe is arranged on the bottom plate and extends to the outer periphery of the first shell part or the second shell part.

[0012] In some embodiments, a motor cooling circuit is arranged in the first shell part, the motor cooling circuit comprises a first cooling channel, the first cooling channel is located at the outer periphery of the first shell part and communicates with the outlet pipe and the motor cavity.

[0013] In some embodiments, the first housing part is provided with a motor cooling circuit, the motor cooling circuit comprising a first cooling channel, the first cooling channel being arranged at the outer periphery of the first housing part and being in communication with the motor cavity, and the cooling liquid in the first cooling channel being adapted to exchange heat with the cooling liquid in the outflow pipe through an oil cooler.

[0014] According to some embodiments of the present application, the second housing part is provided with a reducer cooling circuit, the reducer cooling circuit comprising a second cooling channel, the second cooling channel being arranged at the outer periphery of the second housing part and being in communication with the reducer cavity, and the cooling liquid in the second cooling channel being adapted to exchange heat with the cooling liquid in the outflow pipe through an oil cooler.

[0015] According to the vehicle of the second aspect of the embodiments of the present application, the vehicle comprises the power assembly housing of any one of the above embodiments.

[0016] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0017] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the appended drawings, wherein:

[0018] Figure 1 is a schematic view of a power assembly housing according to some embodiments of the present application Figure 1 ;

[0019] Figure 2 is a schematic view of a power assembly housing according to some embodiments of the present application Figure 2 ;

[0020] Figure 3 is a schematic view of a power assembly housing according to some embodiments of the present application Figure 3 ;

[0021] Figure 4 is a schematic view of a power assembly housing according to some embodiments of the present application Figure 4 .

[0022] REFERENCE NUMERALS:

[0023] 100, power assembly housing;

[0024] 10, first housing part; 10a, motor cavity;

[0025] 20, second housing part; 20a, reducer cavity; 22, plate body; 22a, shaft hole;

[0026] 30 third housing part; 30a electronically controlled cavity; 32 bottom plate; 32a first plate segment; 32b second plate segment; 33 support protrusion; 34 side plate; 36 partition plate;

[0027] 40 liquid outlet pipe;

[0028] 50 first cooling channel;

[0029] 60 second cooling channel;

[0030] 70 reinforcing rib. DETAILED DESCRIPTION

[0031] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0032] Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs; the terms used in the present application are only for the purpose of describing the specific embodiments of the present application, and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion. The terms "first", "second" and the like in the specification and claims of the present application and the above description of drawings are used to distinguish different objects, and are not intended to describe a particular order or primary and secondary relationship.

[0033] In the present application, the phrase "embodiment" means that the specific features, structures or characteristics described in connection with the embodiment can be included in at least one embodiment of the present application. The appearance of this phrase at various places in the specification does not necessarily mean the same embodiment, nor is it an independent or alternative embodiment to the other embodiments.

[0034] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mount", "connect", "connection", "attach" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be direct connection, or indirect connection through intermediate medium; it can be internal communication of two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] The term "and / or", as used in the present application, merely describes an associated relationship, which means that there can be three relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in the present application generally represents an "or" relationship between the front and rear associated objects.

[0036] In the embodiments of the present application, the same reference signs represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, etc. of various components in the embodiments of the present application shown in the drawings, and the overall thickness, length, width, etc. of the integrated device are only exemplary and should not constitute any limitation on the present application.

[0037] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be understood as a limitation on the present application.

[0038] In the description of the present application, the first feature "above" or "below" the second feature can include direct contact between the first and second features, or indirect contact between the first and second features through another feature therebetween.

[0039] In the description of the present application, the first feature "above", "over" and "on" the second feature includes the first feature directly above and obliquely above the second feature, or only means that the first feature is higher in horizontal height than the second feature.

[0040] "Multiple" appearing in the present application means two or more (including two).

[0041] The following description refers to the accompanying drawings. Figures 1-4 The power assembly housing 100 and the vehicle according to embodiments of the present application are described.

[0042] As Figure 1 and Figure 2As shown, according to the power assembly shell 100 of the first aspect of the present application, the power assembly shell 100 comprises: a shell body, the shell body has a motor cavity 10a and a reducer cavity 20a arranged in sequence in the axial direction, and an electric control cavity 30a located on the side of the reducer cavity 20a and the motor cavity 10a away from the axis in the radial direction, and the electric control cavity 30a is open at the end away from the axis in the radial direction.

[0043] Specifically, the shell body has a motor cavity 10a, a reducer cavity 20a and an electric control cavity 30a. The motor cavity 10a can be used to accommodate various components of the driving motor, such as stator, rotor, winding, etc., to ensure the stable operation of the driving motor; the reducer cavity 20a can be used to accommodate various components of the reducer, such as gear, shaft, bearing, etc., to ensure the normal installation and operation of the reducer; the electric control cavity 30a can be used to accommodate the electric control unit of the power assembly system, etc. Among them, the motor cavity 10a and the reducer cavity 20a are arranged in sequence in the axial direction, which can be understood as that the motor cavity 10a and the reducer cavity 20a are adjacent in the axial direction, and the reducer cavity 20a and the motor cavity 10a can be communicated to realize the mechanical connection between the reducer and the driving motor, thereby ensuring the smooth and efficient power transmission between the reducer and the driving motor. At the same time, the electric control cavity 30a is located on the side of the motor cavity 10a and the reducer cavity 20a away from the axis in the radial direction, which can be understood as that the electric control cavity 30a is located at least part of the outer periphery of the motor cavity 10a and the reducer cavity 20a, and is open in the direction away from the axis in the radial direction, which facilitates the installation, maintenance and upgrading of the electric control components, and also helps to improve the heat dissipation efficiency.

[0044] According to the power assembly shell 100 of the present application, the motor cavity 10a, the reducer cavity 20a and the electric control cavity 30a can be defined by the shell body, and the driving motor, the reducer and the electric control components are integrated in the same shell body. Compared with the related art, the shells of the reducer, the motor and the electric control module need to be connected by bolts, which results in a large number of parts, high development cost, great management difficulty, complex assembly process, increased production cost, and the risk of seal failure between the shells, which may cause liquid or oil leakage. The entire shell body of the present application is integrally formed, which can effectively reduce the number of parts and the assembly process, save production cost, improve production efficiency, enhance the overall structural strength, and improve the working reliability and stability. In addition, since the multiple interfaces and connection surfaces between the module shells in the related art are cancelled, the power assembly shell 100 of the present application can prevent the risk of liquid leakage (such as cooling liquid or lubricating oil leakage) caused by poor sealing, and can effectively improve the performance, reliability and service life of the power assembly system.

[0045] As shown in Figure 3 and Figure 4 According to some embodiments of the present application, the shell body comprises: a first shell part 10 and a second shell part 20.

[0046] The first shell part 10 defines a motor cavity 10a; the second shell part 20 defines a reducer cavity 20a, and a plate body 22 is arranged on the second shell part 20 near an end axially away from the first shell part 10 to cover the reducer cavity 20a, and the plate body 22 has at least one through shaft hole 22a.

[0047] Specifically, the first shell part 10 defines a motor cavity 10a to provide space for installation and operation of the driving motor, and the specific shape and size of the first shell part 10 can be set according to different driving motors to ensure that the driving motor can be stably installed therein and meet the needs of heat dissipation, fixation, maintenance and the like of the driving motor; the second shell part 20 is connected to an end of the first shell part 10 in the axial direction and defines a reducer cavity 20a to provide space for installation and operation of the reducer, and similarly, the specific shape and size of the second shell part 20 can be set according to different reducers to ensure that the reducer can be stably installed therein and meet the needs of transmission efficiency and stability of the reducer and the like. In some embodiments, the first shell part 10 and the second shell part 20 are both configured as cylindrical structures to respectively adapt to the external features of the driving motor and the reducer and respectively uniformly bear the load generated during operation of the driving motor and the reducer, thereby ensuring that the driving motor and the reducer have good operation stability and reliability.

[0048] It should be noted that the inner periphery of the part of the second shell part 20 near the end axially away from the first shell part 10 is provided with the plate body 22, which has a certain thickness in the axial direction of the second shell part 20, and the plate body 22 covers the end of the reducer cavity 20a axially away from the motor cavity 10a, which helps to protect the internal components of the reducer cavity 20a and the motor cavity 10a from external pollution and damage, thereby prolonging the service life of the reducer and the driving motor and improving the working reliability thereof. Meanwhile, the plate body 22 is provided with the shaft hole 22a, which can be provided for the output shaft, the intermediate transmission shaft or other shafting components of the reducer that need to be connected with the outside to play a good positioning and supporting role for the shafting components of the reducer, so that the assembly positioning accuracy and reliability of the reducer can be improved.

[0049] Further, the number of the shaft hole 22a on the plate body 22 can be one or more, which is not limited in the embodiments of the present application to improve the adaptability of the shell body to different reducers. For example, when the shafting components in the reducer are of a single-shaft shafting type, the number of the shaft hole 22a on the plate body 22 can be one, and when the shafting components in the reducer are of a multi-shaft shafting type, the number of the shaft hole 22a on the plate body 22 can be a corresponding plurality,

[0050] For example, Figure 3As shown, according to some embodiments of the present application, the shell body further comprises: a third shell part 30, the third shell part 30 comprising a bottom plate 32 and a plurality of side plates 34 surrounding the periphery of the bottom plate 32, at least part of the bottom plate 32 being configured as part of the periphery of the first shell part 10 and the second shell part 20.

[0051] Specifically, the third shell part 30 comprises the bottom plate 32 and the side plates 34, the side plates 34 being a plurality of plates surrounding the periphery of the bottom plate 32 and extending in the thickness direction of the bottom plate 32 towards the direction away from the axis, the plurality of side plates 34 and the bottom plate 32 collectively defining an electric control cavity 30a towards each other to meet the installation requirements of the electric control components and the like. By providing the bottom plate 32 and the side plates 34, the bottom plate 32 can serve the functions of positioning, mounting and supporting the internal components of the electric control cavity 30a, and the plurality of side plates 34 surrounding the periphery of the bottom plate 32 can provide good protection for the internal components of the electric control cavity 30a.

[0052] It should be noted that at least part of the bottom plate 32 is configured as part of the periphery of the first shell part 10 and the second shell part 20, i.e. at least part of the bottom plate 32 is configured by part of the periphery of the first shell part 10 and the second shell part 20, thereby achieving high integration of the shell body in structure. In this way, on the one hand, the material can be saved, and the manufacturing process of the shell body can be simplified, thereby saving production cost and improving production efficiency; on the other hand, through the high integration of the structure, the integration of the corresponding drive motor, reducer and electric control components arranged in the shell body can be improved, thereby facilitating the optimization of the volume and weight of the entire powertrain system, and helping to improve the fuel economy and endurance of the vehicle.

[0053] In addition, in some specific embodiments of the present application, the bottom plate 32 comprises a first plate segment 32a and a second plate segment 32b arranged in sequence, the first plate segment 32a being configured as part of the periphery of the first shell part 10 and the second shell part 20, the first plate segment 32a being an arc-shaped plate segment, and the second plate segment 32b being a horizontal plate segment. The bottom plate 32 is composed of the first plate segment 32a and the second plate segment 32b of different shapes, which is conducive to improving the support stability of the bottom plate 32 to the internal components of the electric control cavity 30a while achieving high integration of the shell body structure, and improving the installation convenience of the internal components of the electric control cavity 30a.

[0054] Further, as shown in FIG. 1, the third shell part 30 further comprises a plurality of connecting plates 36 arranged in the thickness direction of the bottom plate 32 and connecting the plurality of side plates 34 to each other. Figure 4As shown, in some other specific embodiments of this application, a reinforcing rib 70 is provided between the second plate segment 32b and the outer peripheral surfaces of the first housing portion 10 and the second housing portion 20 on the side of the second plate segment 32b facing away from the electronic control cavity 30a in the thickness direction. At least a portion of the second plate segment 32b has a certain space between it and the outer peripheral surfaces of the first housing portion 10 and the second housing portion 20. The reinforcing rib 70 is located in this space. The reinforcing rib 70 can be strip-shaped or plate-shaped. One end of the reinforcing rib 70 is connected to the second plate segment 32b in the extending direction, and the other end is connected to the outer peripheral surface of the first housing portion 10 or the second housing portion 20, forming a triangular or similar shaped support structure. In this way, the connection strength between the base plate 32 and the first housing portion 10 and the second housing portion 20 can be enhanced, the structural strength and rigidity of the entire powertrain housing 100 can be improved, and the reliability and lifespan of the entire powertrain housing 100 can be increased.

[0055] like Figure 3 As shown, according to some embodiments of this application, a partition 36 is provided on the base plate 32, which divides the electrical control cavity 30a into a first cavity and a second cavity. The first cavity is suitable for installing a power module, and the second cavity is suitable for installing a capacitor module.

[0056] Specifically, the base plate 32 may have a partition 36 on the side facing the electrical control cavity 30a in the thickness direction, dividing the electrical control cavity 30a into a first cavity and a second cavity. The shape and size of the partition 36 can be determined according to the layout of the electrical control cavity 30a and the installation requirements of the modules. For example, the partition 36 can extend axially in the shell body, and both ends of the partition 36 in the extension direction can be connected to the side plate 34 to meet the requirement of effectively separating the electrical control cavity 30a. The first cavity is suitable for installing power modules, while the second cavity is suitable for installing capacitor modules. The internal structure of both cavities can include corresponding mounting brackets, fasteners, etc., to ensure that the power modules and capacitor modules can be stably installed in the electrical control cavity 30a.

[0057] In this embodiment, by setting a partition 36 within the electrical control cavity 30a, the power module and capacitor module are respectively installed in the first and second cavities. This enables a modular design of the electrical control unit, allowing each module to be installed, maintained, and upgraded independently, thereby effectively improving the flexibility and maintainability of the electrical control unit. Simultaneously, the partition 36 also helps prevent mutual interference and heat accumulation between the power module and capacitor module. The power module generates relatively more heat during operation, while the capacitor module is relatively temperature-sensitive. Separating them facilitates heat dissipation for the power module and temperature control for the capacitor module, thus contributing to improved stability and reliability of the electrical control unit.

[0058] like Figure 3 As shown, according to some embodiments of this application, the base plate 32 is provided with a plurality of spaced support protrusions 33 to support the power module and / or capacitor module.

[0059] Specifically, each support protrusion 33 protrudes from the surface of the bottom plate 32 towards the electric control cavity 30a, which can be a boss structure in a circular, square or other shape. The support protrusion 33 can be in contact with the bottom of the power module and the capacitor module through its protruding part, so as to provide good installation positioning and support for the modules, thereby improving the installation positioning accuracy and stability of the modules. At the same time, the support protrusion 33 can also be used in cooperation with the fixing holes or fixing structures on the modules, and the modules can be fixed on the bottom plate 32 through bolts, buckles or other connecting members, so as to improve the anti-loosening and anti-vibration performance of the modules during work, and further improve the working reliability and service life of the entire electric control unit. The number of support protrusions 33 is multiple, and the multiple support protrusions 33 can be arranged according to the installation position and demand of the power module and the capacitor module.

[0060] As shown in Figure 3 According to some embodiments of the present application, the third housing part 30 is provided with an electric control cooling circuit for cooling the power module and / or the capacitor module, and the electric control cooling circuit comprises an inlet pipe and an outlet pipe 40. The inlet pipe is arranged on any one of the side plates 34, and the outlet pipe 40 is arranged on the bottom plate 32 and extends to the outer periphery of the first housing part 10 or the second housing part 20.

[0061] Specifically, the electric control cooling circuit is used to cool both or one of the power module and the capacitor module. The electric control cooling circuit comprises an inlet pipe, an outlet pipe 40 and an intermediate cooling channel connecting the inlet pipe and the outlet pipe 40, etc. The inlet pipe can be arranged on any one of the side plates 34 of the third housing part 30, and the position and direction of the inlet pipe can be set according to the supply and flow demand of the cooling liquid. The inlet pipe is used to introduce the cooling liquid into the electric control cooling circuit. The intermediate cooling channel can be a pipe or channel arranged inside the third housing part 30 or on the modules, which is used to guide the cooling liquid to flow around the power module and the capacitor module, so as to take away the working heat of the modules, cool and cool down the modules, and work in a suitable temperature range, thereby improving the working performance and reliability of the modules. The outlet pipe 40 is arranged on the bottom plate 32, which is used to discharge the cooling liquid after heat exchange with the modules from the electric control cooling circuit. Moreover, the outlet pipe 40 extends to the outer periphery of the first housing part 10 or the second housing part 20, so as to connect the outlet pipe 40 with the cooling system outside the power assembly housing 100, or so as to directly flow the cooling liquid to the cooling system of the motor cavity 10a or the reducer cavity 20a, so as to realize the heat management of the entire power assembly system.

[0062] As shown in Figure 3 According to some embodiments of the present application, the first housing part 10 is provided with a motor cooling circuit, and the motor cooling circuit comprises a first cooling channel 50 located at the outer periphery of the first housing part 10 and in communication with the outlet pipe 40 and the motor cavity 10a.

[0063] Specifically, the motor cooling circuit can be used to cool components in the motor cavity 10a, and the motor cooling circuit includes a first cooling channel 50 located at the outer periphery of the first housing part 10, and the first cooling channel 50 can be in communication with the liquid outlet pipe 40 and the motor cavity 10a. When the cooling liquid flows out of the liquid outlet pipe 40, it can directly enter the first cooling channel 50, and the first cooling channel 50 guides the cooling liquid to flow around the motor cavity 10a to absorb the working heat generated by the drive motor, thereby achieving cooling of the drive motor, and further ensuring good working performance of the drive motor.

[0064] It can be understood that the cooling liquid first exchanges heat with each module in the electric control cooling circuit and the electric control cavity 30a, and then flows into the motor cooling circuit to cool the internal components of the motor cavity 10a. The motor cooling circuit and the electric control cooling circuit are located in the same cooling circulation system, which can make the cooling circulation system and the power assembly housing 100 more compact and coordinated in structure, further optimize the space layout, and be beneficial to improving the space utilization and reducing the weight and cost.

[0065] In some embodiments, the cooling liquid in the electric control cooling circuit and the motor cooling circuit is configured as water.

[0066] As shown in Figure 3 According to some embodiments of the present application, the first housing part 10 is provided with a motor cooling circuit, and the motor cooling circuit includes a first cooling channel 50 located at the outer periphery of the first housing part 10 and in communication with the motor cavity 10a. The cooling liquid in the first cooling channel 50 is adapted to exchange heat with the cooling liquid in the liquid outlet pipe 40 through an oil cooler.

[0067] Specifically, the cooling liquid in the first cooling channel 50 can exchange heat with the cooling liquid in the liquid outlet pipe 40 through the oil cooler. In this heat exchange mode, the cooling liquid in the motor cooling circuit can be configured as cooling oil. The oil cooler serves as a heat exchange device, and the cooling oil in the first cooling channel 50 cools and lubricates the drive motor, and exchanges heat with the drive motor. After the cooling oil is heated, it exchanges heat with the cooling liquid (such as water) in the liquid outlet pipe 40 at the oil cooler, so that the cooling oil in the motor cooling circuit can realize circulating cooling. By setting the motor cooling circuit and exchanging heat with the cooling liquid of the liquid outlet pipe 40 of the electric control cooling circuit through the oil cooler, efficient heat dissipation of the drive motor is achieved, which is beneficial to improving the integration of the system and the heat dissipation efficiency and effect of the entire power assembly system.

[0068] As shown in Figure 1-4As shown, according to some embodiments of the present application, the second housing part 20 is provided with a reducer cooling circuit, which includes a second cooling channel 60 arranged on the outer periphery of the second housing part 20 and in communication with the reducer cavity 20a, and the cooling liquid in the second cooling channel 60 is adapted to exchange heat with the cooling liquid in the outflow pipe 40 through an oil cooler.

[0069] Specifically, the reducer cooling circuit can be used to cool the components in the reducer cavity 20a, which includes the second cooling channel 60 arranged on the outer periphery of the second housing part 20 and extending axially along the second housing part 20 to improve the uniformity and coverage of the cooling liquid in the second cooling channel 60 to the components in the reducer cavity 20a. The second cooling channel 60 is in communication with the reducer cavity 20a, and the cooling liquid in the second cooling channel 60 can flow into the reducer cavity 20a to ensure that each part in the reducer cavity 20a is sufficiently cooled. Moreover, the cooling liquid in the second cooling channel 60 is adapted to exchange heat with the cooling liquid in the outflow pipe 40 through an oil cooler, and similarly, the cooling liquid in the second cooling channel 60 can be configured as cooling oil, which is used to cool and lubricate the reducer, etc., and the oil cooler as a heat exchange device can effectively transfer the heat in the reducer cooling circuit to the cooling liquid in the outflow pipe 40, so that the cooling oil in the reducer cooling circuit can be cooled and circulated.

[0070] As ​ As shown, according to the vehicle of the second aspect of the present application, the vehicle includes the power assembly housing 100 described in any one of the above embodiments, and the resulting technical effects are consistent with those of the above embodiments, which will not be described here.

[0071] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0072] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A powertrain housing characterized by, Comprising: a housing body having a motor cavity (10a) and a reducer cavity (20a) arranged in axial sequence, and an electronic control cavity (30a) located on the side of the reducer cavity (20a) and the motor cavity (10a) away from the axis in radial direction, and the electronic control cavity (30a) is open at the end away from the axis in radial direction.

2. The powertrain housing of claim 1, wherein, The housing body comprises: a first housing part (10) defining the motor cavity (10a); a second housing part (20) defining the reducer cavity (20a), and a plate body (22) covering the reducer cavity (20a) is arranged on the second housing part (20) near the end away from the first housing part (10) in axial direction, and the plate body (22) has at least one through shaft hole (22a).

3. The powertrain housing of claim 2, wherein, Further comprising: a third housing part (30) comprising a bottom plate (32) and a plurality of side plates (34) surrounding the outer periphery of the bottom plate (32), and at least part of the bottom plate (32) is configured as part of the outer periphery of the first housing part (10) and the second housing part (20).

4. The powertrain housing of claim 3, wherein, A partition plate (36) is arranged on the bottom plate (32) and divides the electronic control cavity (30a) into a first cavity and a second cavity, the first cavity is suitable for installing a power module, and the second cavity is suitable for installing a capacitor module.

5. The powertrain housing of claim 3, wherein, A plurality of spaced support protrusions (33) are arranged on the bottom plate (32) to support the power module and / or the capacitor module.

6. The powertrain housing of claim 4, wherein, An electronic control cooling circuit for cooling the power module and / or the capacitor module is arranged in the third housing part (30), and the electronic control cooling circuit comprises an inlet pipe and an outlet pipe (40), the inlet pipe is arranged on any one of the side plates (34), and the outlet pipe (40) is arranged on the bottom plate (32) and extends to the outer periphery of the first housing part (10) or the second housing part (20).

7. The powertrain housing of claim 6, wherein, A motor cooling circuit is arranged in the first housing part (10), and the motor cooling circuit comprises a first cooling channel (50) located on the outer periphery of the first housing part (10) and in communication with the outlet pipe (40) and the motor cavity (10a).

8. The powertrain housing of claim 6, wherein, A motor cooling circuit is arranged in the first housing part (10), and the motor cooling circuit comprises a first cooling channel (50) arranged on the outer periphery of the first housing part (10) and in communication with the motor cavity (10a), and the cooling liquid in the first cooling channel (50) is suitable for heat exchange with the cooling liquid in the outlet pipe (40) through an oil cooler.

9. The powertrain housing of claim 6, wherein, A reducer cooling circuit is arranged in the second housing part (20), and the reducer cooling circuit comprises a second cooling channel (60) arranged on the outer periphery of the second housing part (20) and in communication with the reducer cavity (20a), and the cooling liquid in the second cooling channel (60) is suitable for heat exchange with the cooling liquid in the outlet pipe (40) through an oil cooler.

10. A vehicle characterized by comprising: Comprising: The power assembly housing of any one of claims 1-9.

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