CN217883129U - Motor assembly and vehicle - Google Patents

Abstract

The utility model discloses a motor assembly and a vehicle, which relate to the technical field of new energy and energy-saving automobiles, wherein the motor assembly comprises a shell, a stator, a rotor, a water-cooling cavity and an oil-cooling cavity; the stator and the rotor are arranged in the shell; the stator is sleeved on the rotor and is in rotating fit with the rotor; the water-cooling cavity is arranged on the shell; the oil cooling cavity and the water cooling cavity are arranged adjacently, and the stator is located in the oil cooling cavity. The stator is arranged in the oil cooling cavity and is immersed in the cooling oil to uniformly dissipate heat, and the cooling oil can rapidly absorb heat generated during the working of the stator, so that the local concentrated heating of the motor assembly is avoided. The oil cooling cavity and the water cooling cavity on the shell are arranged adjacently, heat exchange can be rapidly realized between cooling water in the water cooling cavity and cooling oil in the oil cooling cavity, a heat transfer path is shortened, thermal contact resistance is reduced, and heat dissipation efficiency is improved.

Description

Motor assembly and vehicle

Technical Field

The utility model relates to a new forms of energy, energy-conserving car technical field, concretely relates to motor assembly and vehicle.

Background

Under the large background that world resources are deficient and environmental pollution of China is increasingly serious, the environmental protection performance and the fuel economy of vehicles are concerned. The motor is used for directly or indirectly providing driving power for the vehicle, and a pure electric drive or hybrid power scheme is adopted, so that the environmental protection performance and the fuel economy of the vehicle can be greatly improved. The motor generates heat during operation, so the performance of the vehicle is directly affected by the heat dissipation performance of the motor.

In the prior art, a water cooling structure is usually arranged on a motor shell to dissipate heat inside the motor; there is also a scheme of spraying the cooling oil by arranging an oil pipe with a hole in the motor or using the rotation of the motor rotor to splash the cooling oil to realize the heat dissipation of the motor.

When the water cooling structure in the prior art is adopted for heat dissipation, the water cooling structure cannot deal with the overload concentrated heating of the motor, so that the local high temperature is generated inside the motor; when the cooling oil is sprayed or splashed for heat dissipation, the problem of incomplete coverage of the cooling oil exists. Adopt above-mentioned motor heat dissipation mode all to have the not good problem of radiating effect.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides a motor assembly and vehicle to solve prior art, there is the not good problem of radiating effect in the motor heat dissipation mode.

In order to solve the above problems, an embodiment of the present invention discloses a motor assembly, which includes a housing, a stator, a rotor, a water cooling cavity and an oil cooling cavity;

the stator and the rotor are disposed within the housing;

the stator is sleeved on the rotor and is in running fit with the rotor;

the water-cooling cavity is arranged on the shell;

the oil cooling cavity and the water cooling cavity are arranged adjacently, and the stator is located in the oil cooling cavity.

Optionally, the motor assembly further comprises an oil cooling component;

the oil cooling assembly at least partially wraps the stator, is connected with the inner wall of the shell and surrounds the oil cooling cavity with the inner wall of the shell.

Optionally, the oil cooling assembly comprises a centering cylinder;

the outer side wall of the centering cylinder is attached to one side, close to the rotor, of the stator;

the inner side wall of the centering barrel is in clearance fit with the rotor.

Optionally, the oil cooling assembly further comprises a potting;

the potting parts are arranged at two ends of the stator along the direction of the output shaft of the motor assembly;

the inner walls of the centering barrel, the potting piece and the shell jointly enclose the oil cooling cavity.

Optionally, the housing is provided with a water inlet, a water outlet, an oil inlet and an oil outlet;

the water inlet and the water outlet are respectively communicated with the water cooling cavity;

the oil inlet and the oil outlet are respectively communicated with the oil cooling cavity.

Optionally, the water inlet and the water outlet are respectively provided with a first pipeline joint, and the first pipeline joint is used for communicating the water cooling loop.

Optionally, the oil inlet and the oil outlet are respectively provided with a sealing member.

Optionally, the oil inlet and the oil outlet are respectively provided with a second pipeline joint, and the second pipeline joints are used for communicating an oil cooling loop.

Optionally, the water inlet and the water outlet are respectively provided with a first pipeline joint, and the first pipeline joint is used for communicating with a water cooling loop;

the oil inlet and the oil outlet are respectively provided with a second pipeline joint which is used for communicating an oil cooling loop.

The embodiment of the utility model provides a still disclose a vehicle, including foretell motor assembly.

The embodiment of the utility model provides a include following advantage: the stator is arranged in the oil cooling cavity and is immersed in the cooling oil to uniformly dissipate heat, and the cooling oil can rapidly absorb heat generated by the stator during working, so that the local concentrated heating of the motor assembly is avoided. The oil cooling cavity and the water cooling cavity on the shell are arranged adjacently, heat exchange can be rapidly realized between cooling water in the water cooling cavity and cooling oil in the oil cooling cavity, a heat transfer path is shortened, thermal contact resistance is reduced, and heat dissipation efficiency is improved. Meanwhile, the motor assembly has two structures of a water cooling cavity and an oil cooling cavity, so that the water cooling scheme and the oil cooling scheme of the motor assembly can be freely switched or combined, and the product applicability is wider.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural diagram of an electric machine assembly according to an embodiment of the present invention;

fig. 2 is a second schematic structural diagram of a motor assembly according to an embodiment of the present invention;

fig. 3 is a schematic view of the assembly position structure of the motor assembly according to the embodiment of the present invention.

Reference numerals

I, a motor assembly; II, a gearbox; III-an engine; 10-a housing; 20-a stator; 30-a rotor; 40-water cooling of the cavity; 50-oil cooling cavity; 60-oil cooling component; 70-an output shaft; 80-a first pipe joint; 90-a seal; 100-a second line connection; 101-a water inlet; 102-a water outlet; 103-an oil inlet; 104-oil outlet; 105-flange end cap; 601-a centering cylinder; 602-potting.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

Referring to fig. 1 to 3, an embodiment of the present invention provides a motor assembly i, including a housing 10, a stator 20, a rotor 30, a water cooling cavity 40, and an oil cooling cavity 50; the stator 20 and the rotor 30 are disposed within the housing 10; the stator 20 is sleeved on the rotor 30 and is in rotating fit with the rotor 30; the water-cooling cavity 40 is arranged in the shell 10; the oil cooling cavity 50 and the water cooling cavity 40 are arranged adjacently, and the stator 20 is located in the oil cooling cavity 50.

Specifically, as shown in fig. 1 to fig. 3, in the embodiment of the present invention, the motor assembly i can be used for a pure electric vehicle type and a hybrid vehicle type. For example, as shown in fig. 3, in a P2-architecture hybrid power system, a motor assembly i is disposed between a transmission ii and an engine iii, and under a low-speed working condition, the motor assembly i provides driving power for a vehicle, so as to avoid inefficient operation of the engine iii; the motor assembly I can also adjust the operating point of an engine III, and the fuel economy is improved.

The motor assembly I comprises a shell 10, a stator 20, a rotor 30, a water cooling cavity 40 and an oil cooling cavity 50. The shell 10 is a main mounting and fixing component of the motor assembly I and plays a role in protecting internal parts of the motor assembly I. The housing 10 may be made of aluminum alloy or cast iron, the housing 10 has an inner cavity, and the stator 20 and the rotor 30 are disposed in the inner cavity. The shell 10 is further provided with a flange end cover 105, and after the components inside the shell 10 are assembled, the flange end cover 105 is buckled to complete the whole assembly of the motor assembly I.

The stator 20 is a relatively fixed part in the motor assembly I, the rotor 30 is a relatively rotating part in the motor assembly I, and the stator 20 is sleeved on the rotor 30. The stator 20 includes a stator core and a stator winding, the stator winding is wound around the stator core, and a gap is provided between the stator winding and the stator core. The stator winding is energized with three-phase alternating current to generate a rotating magnetic field, thereby driving the rotor 30 to rotate.

The water-cooling cavity 40 is arranged on the shell 10, the shell wall of the shell 10 can adopt a double-layer hollow structure, the water-cooling cavity 40 is arranged in the hollow structure, and the water-cooling cavity 40 can be reserved by adopting an integrated forming process when the shell 10 is manufactured, so that the sealing performance of the water-cooling cavity 40 is ensured. The water cooling cavity 40 is filled with cooling water, and the water cooling cavity 40 can be connected with an external heat exchanger through a water cooling pipeline to realize heat exchange between the cooling water and the heat exchanger. The oil cooling cavity 50 and the water cooling cavity 40 are arranged adjacently, the oil cooling cavity 50 can be integrally formed with the motor shell 10, the oil cooling cavity 50 can also be formed in an installing mode, cooling oil is filled in the oil cooling cavity 50, and the oil cooling cavity 50 can be connected with an external heat exchanger through an oil cooling pipeline to achieve heat exchange between the cooling oil and the heat exchanger.

The stator 20 is located in the oil cooling chamber 50, and the stator core and the stator windings are immersed in the cooling oil and are in substantially uniform contact with the cooling oil. Stator winding is main heat production part in the motor assembly I, and the produced heat of stator winding during operation can be taken away fast to the cooling oil, avoids stator winding local high temperature's phenomenon to appear. Meanwhile, the oil cooling cavity 50 is arranged adjacent to the water cooling cavity 40, and cooling water in the water cooling cavity 40 can take away heat of the stator winding absorbed by the cooling oil in time. Because of no local concentrated heating, the maximum temperature inside the motor assembly I is reduced, and longer overload duration time can be allowed. Under the same working condition, the average working temperature of the motor assembly I is reduced, and the motor efficiency is improved.

Because the water-cooling cavity 40 and the oil-cooling cavity 50 can independently realize heat exchange with an external heat exchanger, the heat dissipation mode of water cooling or oil cooling can be freely selected according to the actual requirements of products, and the water cooling and the oil cooling can be combined for use, so that the heat dissipation efficiency is further improved.

The embodiment of the utility model provides an in, set up stator 20 in oil-cooled cavity 50, stator 20 soaks evenly dispels the heat in the coolant oil, and the heat that the stator 20 during operation produced can be absorbed rapidly to the coolant oil, avoids I local concentrated of motor assembly to generate heat. The oil cooling cavity 50 is adjacent to the water cooling cavity 40 on the shell 10, and the cooling water in the water cooling cavity 40 and the cooling oil in the oil cooling cavity 50 can quickly realize heat exchange, thereby shortening a heat transfer path, reducing contact thermal resistance and improving heat dissipation efficiency. Meanwhile, the motor assembly I is provided with the water cooling cavity 40 and the oil cooling cavity 50, so that free switching or combination of a water cooling scheme and an oil cooling scheme of the motor assembly I can be realized, and the product applicability is wider.

Optionally, referring to fig. 1 to 2, the motor assembly i further includes an oil cooling component 60; the oil cooling assembly 60 at least partially wraps the stator 20, and the oil cooling assembly 60 is connected with the inner wall of the casing 10 and encloses the oil cooling cavity 50 with the inner wall of the casing 10.

Specifically, as shown in fig. 1 to 2, the oil cooling cavity 50 may be integrally formed with the motor housing 10, or the oil cooling cavity 50 may be formed by being additionally installed. The embodiment of the utility model provides an in, the cold cavity 50 accessible of oil installs the mode formation of the cold subassembly 60 of oil additional, and the cold subassembly 60 of oil can hold components such as chamber and a sealed section of thick bamboo for prefabricated baffle, semi-closed, and the cold subassembly 60 of oil and the wall connection of casing 10 to enclose into foretell cold cavity 50 of oil jointly with the casing 10 inner wall. The connection of the oil cooling assembly 60 to the housing 10 may be welding, bonding, etc. Form the cold cavity 50 of oil through the mode of installing cold subassembly 60 of oil additional, the assembly of the inside spare part of the motor of being convenient for need not directly to form the cold cavity 50 of oil on casing 10, has reduced the preparation degree of difficulty of casing 10.

Optionally, as shown with reference to fig. 1 to 2, the oil cooling assembly 60 comprises a centering cylinder 601; the outer side wall of the centering cylinder 601 is attached to one side of the stator 20 close to the rotor 30; the inner side wall of the centering cylinder 601 is in clearance fit with the rotor 30.

Specifically, as shown in fig. 1 to 2, the centering tube 601 is provided between the stator 20 and the rotor 30 to separate the stator 20 and the rotor 30 from each other. The inner diameter of the centering cylinder 601 is slightly larger than the outer diameter of the rotor 30, and the outer diameter of the centering cylinder 601 is slightly smaller than the inner diameter of the stator 20. During assembly, the centering cylinder 601 may be inserted into the gap between the stator 20 and the rotor 30, an outer side wall of the centering cylinder 601 may be attached to a side of the stator 20 close to the rotor 30, and an inner side wall of the centering cylinder 601 may be in clearance fit with the rotor 30. The centering cylinder 601 is arranged between the stator 20 and the rotor 30, so that the stator 20 and the rotor 30 are separated, and the oil cooling cavity 50 is conveniently arranged to dissipate heat of the stator 20; without affecting the rotation of the rotor 30.

The centering cylinder 601 may be made of stainless steel, carbon fiber, or the like. The stainless steel centering cylinder 601 has the advantages of high strength and corrosion resistance, and is favorable for improving the durability of the motor assembly I. The carbon fiber centering cylinder 601 is small in mass and beneficial to light-weight design. Can select the centering cylinder 601 of suitable material according to actual demand, the embodiment of the utility model provides a do not restrict to this.

Optionally, referring to fig. 1 to 2, the oil cooling assembly 60 further includes a potting 602; the potting pieces 602 are arranged at two ends of the stator 20 along the direction of the output shaft 70 of the motor assembly I; the centering cylinder 601, the potting member 602, and the inner wall of the housing 10 together enclose the oil cooling cavity 50.

Specifically, as shown in fig. 1 to 2, the centering cylinder 601 separates the stator 20 from the side surface of the rotor 30, and both ends of the stator 20 also need to be sealed along the direction of the output shaft 70 of the motor assembly i. The potting member 602 may be formed by curing both ends of the stator 20 in a potting manner, and the cured potting member 602 is respectively attached and sealed to the inside of the housing 10 and the outer side wall of the centering cylinder 601. The potting member 602 may be made of epoxy resin or silicone, and preferably made of epoxy resin, which has good chemical resistance and heat resistance. The inner walls of the centering cylinder 601, the potting piece 602 and the shell 10 jointly enclose the oil cooling cavity 50, and the potting piece 602 is formed by adopting a potting process, so that the sealing performance of the oil cooling cavity 50 is improved, the leakage of cooling oil is avoided, and the working stability of the motor assembly I is improved.

Optionally, referring to fig. 1 to 2, the housing 10 is provided with a water inlet 101, a water outlet 102, an oil inlet 103 and an oil outlet 104; the water inlet 101 and the water outlet 102 are respectively communicated with the water-cooling cavity 40; the oil inlet 103 and the oil outlet 104 are respectively communicated with the oil cooling cavity 50.

Specifically, as shown in fig. 1 to 2, when the housing 10 is manufactured, the water inlet 101, the water outlet 102, the oil inlet 103, and the oil outlet 104 may be reserved by integral molding, or the water inlet 101, the water outlet 102, the oil inlet 103, and the oil outlet 104 may be formed on the housing 10 by opening holes. The water inlet 101 and the water outlet 102 are respectively communicated with the water cooling cavity 40, and the water cooling cavity 40 can be connected with a water cooling pipeline and an external heat exchanger through the water inlet 101 and the water outlet 102, so that heat exchange between cooling water and the heat exchanger is realized. The oil inlet 103 and the oil outlet 104 are respectively communicated with the oil cooling cavity 50, and the oil cooling cavity 50 can be connected with an oil cooling pipeline and an external heat exchanger through the oil inlet 103 and the oil outlet 104, so that heat exchange between cooling oil and the heat exchanger is realized.

Through setting up water inlet 101, delivery port 102, oil inlet 103 and oil-out 104, the customer can select the radiating mode of corresponding water-cooling, oil cooling or water-cooling and oil cooling combination according to actual demand, and the product suitability is wider.

Optionally, referring to fig. 1, the water inlet 101 and the water outlet 102 are respectively provided with a first pipeline joint 80, and the first pipeline joint 80 is used for communicating with a water cooling loop.

Particularly, as shown in fig. 1, in the embodiment of the present invention, a water-cooled heat dissipation method can be independently adopted, the first pipeline joint 80 is respectively disposed at the water inlet 101 and the water outlet 102, and the first pipeline joint 80 is fixed to the water inlet 101 and the water outlet 102 through a threaded connection, so as to facilitate installation and disassembly. The water cooling pipeline can be sleeved on the first pipeline joint 80 to be installed, and the water cooling pipeline and the first pipeline joint 80 can be fixed in a threaded connection or interference fit mode. When the customer confirms to adopt water-cooled radiating mode, only need link to each other water-cooling cavity 40 with water-cooling pipeline and outside heat exchanger through first pipeline joint 80, can realize the heat exchange circulation of cooling water and heat exchanger, the cooling water takes away the heat of casing 10, realizes the heat dissipation of motor assembly I.

Optionally, referring to fig. 1, the oil inlet 103 and the oil outlet 104 are respectively provided with a sealing member 90.

Specifically, as shown in fig. 1, on the basis of water-cooling heat dissipation, in order to further improve the heat dissipation efficiency of the motor assembly i, cooling oil may be introduced into the oil cooling cavity 50, and the oil inlet 103 and the oil outlet 104 of the oil cooling cavity 50 are sealed by the sealing member 90, so as to form an oil storage sealed cavity. The sealing element 90 may be made of silica gel or rubber, and the connection manner between the sealing element 90 and the oil inlet 103 and the oil outlet 104 may be threaded connection or interference fit. The stator core and the stator winding are immersed in the cooling oil and are in full and uniform contact with the cooling oil. The cooling oil can quickly absorb heat generated by the stator winding during working, and the phenomenon of local high temperature of the stator winding is avoided. Meanwhile, the oil cooling cavity 50 and the water cooling cavity 40 are arranged adjacently, and cooling water circulating in the water cooling cavity 40 can take away heat of the stator winding absorbed by the cooling oil in time, so that a heat transfer path is shortened, thermal contact resistance is reduced, and heat dissipation efficiency is improved.

Optionally, referring to fig. 2, the oil inlet 103 and the oil outlet 104 are respectively provided with a second pipeline joint 100, and the second pipeline joint 100 is used for communicating an oil cooling circuit.

Particularly, as shown in fig. 2, in the embodiment of the present invention, the cooling mode of oil cooling can be independently adopted, the second pipeline joint 100 is respectively disposed at the oil inlet 103 and the oil outlet 104, and the second pipeline joint 100 can be fixed with the oil inlet 103 and the oil outlet 104 by a threaded connection mode, so as to facilitate installation and disassembly. The oil cooling pipeline can be sleeved on the second pipeline joint 100 to realize installation, and the oil cooling pipeline and the second pipeline joint 100 can be fixed in a threaded connection or interference fit mode. When the customer confirms to adopt the cold radiating mode of oil, only need link to each other oil-cooling cavity 50 with oil-cooling pipeline and external heat exchanger through second pipeline joint 100, cooling oil flows into oil-cooling cavity 50 by oil inlet 103, then passes the clearance between stator core and the stator winding, fully contacts with stator core and stator winding, forms continuous cooling oil circuit, direct cooling stator winding takes away the heat, then flows out via oil-out 104, realize the heat exchange circulation in transmitting to external heat exchanger through the oil-cooling pipeline.

By adopting the stator oil cooling heat dissipation mode, because the cooling oil in the oil cooling cavity 50 completely infiltrates and fills the stator 20 winding, the temperature field is balanced, the heat absorption efficiency is superior to the scheme of splashing and spray heat dissipation, and the splashing and spray of the cooling oil are not needed to be assisted by the rotation of the rotor 30.

Optionally, the water inlet 101 and the water outlet 102 are respectively provided with a first pipeline joint 80, and the first pipeline joint 80 is used for communicating with a water cooling loop; the oil inlet 103 and the oil outlet 104 are respectively provided with a second pipeline joint 100, and the second pipeline joint 100 is used for communicating an oil cooling loop.

Particularly, in the embodiment of the utility model provides an in, can also adopt the scheme of oil cooling, water-cooling dual cycle to realize the heat dissipation to motor assembly I. The oil inlet 103 and the oil outlet 104 are respectively provided with a second pipeline connector 100, the oil cooling cavity 50 is connected with an oil cooling pipeline and an external heat exchanger through the second pipeline connector 100, cooling oil flows into the oil cooling cavity 50 from the oil inlet 103, then passes through a gap between the stator core and the stator winding, and fully contacts with the stator core and the stator winding to form a continuous cooling oil path, directly cools the stator winding, takes away heat, then flows out from the oil outlet 104, and is transmitted to the external heat exchanger through the oil cooling pipeline to realize heat exchange circulation.

The first pipe joint 80 is provided at the water inlet 101 and the water outlet 102, respectively. The water-cooling cavity 40 is connected with the water-cooling pipeline and the external heat exchanger through the first pipeline joint 80, so that the heat exchange circulation of the cooling water and the heat exchanger can be realized. The oil cooling cavity 50 is arranged adjacent to the water cooling cavity 40, and cooling water circulating in the water cooling cavity 40 can take away heat of the stator winding absorbed by the cooling oil in time, so that a heat transfer path is shortened, and the temperature of the cooling oil is reduced.

By adopting the heat dissipation scheme of oil cooling and water cooling dual cycle, the heat of the cooling oil in the oil cooling cavity 50 can be taken away in time by the circulating cooling water, the temperature of the cooling oil in the oil cooling cavity 50 is reduced, the problem that the cooling efficiency is reduced due to overhigh local temperature of the cooling oil is avoided, and meanwhile, the uniformity of heat dissipation is also improved.

The embodiment of the utility model provides a still disclose a vehicle, including foretell motor assembly I.

The embodiment of the utility model provides an in, the vehicle adopts foretell motor assembly I, sets up stator 20 in oil-cooling cavity 50, and stator 20 evenly dispels the heat in soaking the coolant oil, and the heat that the stator 20 during operation produced can be absorbed rapidly to the coolant oil, avoids I local concentrated of motor assembly to generate heat. The oil cooling cavity 50 is arranged adjacent to the water cooling cavity 40 on the shell 10, heat exchange can be rapidly realized between cooling water in the water cooling cavity 40 and cooling oil in the oil cooling cavity 50, a heat transfer path is shortened, contact thermal resistance is reduced, heat dissipation efficiency is improved, the highest temperature in the motor assembly I is reduced, and longer overload duration time can be allowed. Under the same working condition, the average working temperature of the motor assembly I is reduced, the motor efficiency is improved, and the performance of the vehicle is improved. Meanwhile, the motor assembly I is provided with the water cooling cavity 40 and the oil cooling cavity 50, so that free switching or combination of a water cooling scheme and an oil cooling scheme of the motor assembly I can be realized, and the product applicability is wider.

It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.

It should also be noted that, in this document, the terms "upper", "lower", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplified description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Moreover, relational terms such as "first" and "second" are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions or should not be construed as indicating or implying relative importance. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrases "comprising one of 8230; \8230;" 8230; "does not exclude the presence of additional like elements in a process, method, article, or terminal device that comprises the element.

The technical solutions provided by the present application are described in detail above, and the principles and embodiments of the present application are described herein by using specific examples, which are only used to help understanding the present application, and the content of the present description should not be construed as limiting the present application. While various modifications of the described embodiments and applications will be apparent to those skilled in the art in light of the disclosure herein, it is not desired to be exhaustive or exhaustive all of the embodiments and obvious variations or modifications are possible in light of the above teachings.

Claims (10)

1. The motor assembly is characterized by comprising a shell (10), a stator (20), a rotor (30), a water cooling cavity (40) and an oil cooling cavity (50);

the stator (20) and the rotor (30) are disposed within the housing (10);

the stator (20) is sleeved on the rotor (30) and is in running fit with the rotor (30);

the water-cooling cavity (40) is arranged on the shell (10);

the oil cooling cavity (50) and the water cooling cavity (40) are arranged adjacently, and the stator (20) is located in the oil cooling cavity (50).

2. The electric machine assembly according to claim 1, further comprising an oil cooling component (60);

the oil cooling assembly (60) at least partially wraps the stator (20), and the oil cooling assembly (60) is connected with the inner wall of the shell (10) and encloses the oil cooling cavity (50) with the inner wall of the shell (10).

3. The electric machine assembly according to claim 2, characterized in that the oil cooling component (60) comprises a centering cylinder (601);

the outer side wall of the centering cylinder (601) is attached to one side, close to the rotor (30), of the stator (20);

the inner side wall of the centering cylinder (601) is in clearance fit with the rotor (30).

4. The electric machine assembly according to claim 3, wherein the oil cooling component (60) further comprises a potting (602);

the potting piece (602) is arranged at two ends of the stator (20) along the direction of the motor assembly output shaft (70);

the centering cylinder (601), the potting piece (602) and the inner wall of the shell (10) jointly enclose the oil cooling cavity (50).

5. The motor assembly according to claim 1, characterized in that the housing (10) is provided with a water inlet (101), a water outlet (102), an oil inlet (103) and an oil outlet (104);

the water inlet (101) and the water outlet (102) are respectively communicated with the water-cooling cavity (40);

the oil inlet (103) and the oil outlet (104) are respectively communicated with the oil cooling cavity (50).

6. The motor assembly according to claim 5, wherein the water inlet (101) and the water outlet (102) are respectively provided with a first pipeline joint (80), and the first pipeline joint (80) is used for communicating with a water cooling loop.

7. The motor assembly according to claim 6, characterized in that the oil inlet (103) and the oil outlet (104) are provided with a seal (90), respectively.

8. The motor assembly according to claim 5, characterized in that the oil inlet (103) and the oil outlet (104) are respectively provided with a second line connector (100), and the second line connectors (100) are used for communicating an oil cooling circuit.

9. The motor assembly according to claim 5, wherein the water inlet (101) and the water outlet (102) are respectively provided with a first pipeline joint (80), and the first pipeline joint (80) is used for communicating with a water cooling loop;

the oil inlet (103) and the oil outlet (104) are respectively provided with a second pipeline joint (100), and the second pipeline joint (100) is used for communicating an oil cooling loop.

10. A vehicle comprising an electric machine assembly according to any one of claims 1 to 9.

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