CN215267910U - Motor assembly and vehicle - Google Patents

Abstract

The utility model discloses a motor element and vehicle, motor element includes: the oil separator comprises a shell, a first oil inlet channel and a second oil inlet channel, wherein two ends of the shell are open, an accommodating cavity is formed in the shell, the peripheral wall of the shell is provided with the first oil inlet channel, and an oil distributing hole for communicating the first oil inlet channel with the accommodating cavity is formed in the shell; a first flow channel groove and a second flow channel groove are arranged on the inner wall of the accommodating cavity, the first flow channel groove surrounds the inner wall of the accommodating cavity in a first direction, and the second flow channel groove is intersected with the first flow channel groove and extends in a second direction; the outlet end of the oil distribution hole is arranged in the first flow channel groove or the second flow channel groove. According to the utility model discloses a motor element, this motor element can be with the cooling oil along first flow channel groove and the inner wall that the chamber was held to second flow channel groove flow direction, has improved the coverage of cooling oil to directly cool off and lubricate holding intracavity portion, reduced motor element's temperature effectively, reduced motor element's wearing and tearing.

Description

Motor assembly and vehicle

Technical Field

The utility model belongs to the technical field of the motor and specifically relates to a motor element and vehicle is related to.

Background

In the related art, most of the existing new energy automobile motors adopt water cooling and oil cooling modes. The water-cooled motor needs to transfer a heat source inside the motor to the outside through layer-by-layer materials and then is taken away by a water channel, and because of the existence of thermal resistance, a temperature gradient exists between a winding and a water-cooled shell, the winding cannot be directly cooled, so that temperature accumulation is caused, local hot spots are formed, and the water-cooling effect is reduced. The oil-cooled motor mainly cools the stator, an oil way is designed inside the shell, and a drainage structure is additionally arranged above the winding, so that the occupied space of the motor is enlarged due to the arrangement, and the structure of the motor is more complex. The oil-cooled motor can also adopt an oil bath mode, cooling oil is added in the motor, so that the rotor is immersed in the cooling oil, the oil is splashed onto the motor through the rotation of the rotor for cooling, the rotation resistance of the rotor can be increased by adopting the method for cooling, and the cooling effect of the cooling mode is limited.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the utility model is to provide a motor element, this motor element can hold the inner wall in chamber along first flow channel groove and second flow channel groove flow direction with the coolant oil, has improved the coverage of coolant oil to directly cool off and lubricate holding intracavity portion, reduced motor element's temperature effectively, reduced motor element's wearing and tearing.

The utility model discloses still provide a motor that has above-mentioned motor element.

According to the utility model discloses a motor element, motor element includes: the oil separator comprises a shell, a first oil inlet channel and a second oil inlet channel, wherein two ends of the shell are open, an accommodating cavity is formed in the shell, the peripheral wall of the shell is provided with the first oil inlet channel, and an oil distributing hole for communicating the first oil inlet channel with the accommodating cavity is formed in the shell; a first flow channel groove and a second flow channel groove are arranged on the inner wall of the accommodating cavity, the first flow channel groove surrounds the inner wall of the accommodating cavity in a first direction, and the second flow channel groove is intersected with the first flow channel groove and extends in a second direction; the outlet end of the oil distribution hole is arranged in the first flow channel groove or the second flow channel groove.

According to the utility model discloses a motor element is provided with first flow channel groove and second flow channel groove on this motor element's the inner wall that holds the chamber, and first flow channel groove and second flow channel groove extend towards first direction and second direction respectively. The cooling oil that divides the oilhole through can flow to the first direction and the second direction that hold the intracavity wall respectively along first flow channel groove and second flow channel groove, guarantees that the cooling oil can be holding the circulation of intracavity wall, has improved the coverage of cooling oil to directly cool down and lubricate holding intracavity portion, reduced motor element's temperature effectively, reduced motor element's wearing and tearing.

According to an embodiment of the present invention, the first flow channel groove and/or the second flow channel groove are configured in a plurality disposed spaced apart from each other.

According to the utility model discloses an embodiment, motor element still includes: a stator disposed in the receiving cavity, an outer circumferential surface of the stator closing an open end of the first flow channel groove and an open end of the second flow channel groove; and the end cover is arranged on the shell and seals one end of the shell.

According to the utility model discloses an embodiment, be provided with the axial fitting piece on the inner wall that holds the chamber, the both ends in second flow channel groove respectively with the end cover with the axial fitting piece ends to, the end cover and/or be provided with the intercommunication on the axial fitting piece the second flow channel groove with hold the chamber lead oily passageway.

According to an embodiment of the present invention, the second flow channel grooves are arranged at intervals in the circumferential direction of the housing, and the oil guide passage includes a first oil guide groove; the first oil guide groove is arranged on the end cover, and the first oil guide groove is in one-to-one correspondence with one end of the second flow channel groove so as to communicate the corresponding second flow channel groove with the accommodating cavity.

According to an embodiment of the utility model, lead the oil passageway and include the second and lead the oil groove, the second lead the oil groove set up in on the axial fitting piece, and construct as with a plurality of the other end one-to-one in second runner groove, the second lead the oil groove be suitable for with second runner groove with hold the chamber intercommunication.

According to an embodiment of the invention, the axial fitting piece is configured as a ring or as an arc.

According to an embodiment of the present invention, a support portion is disposed on the end cap, a second oil inlet channel communicated with the first oil inlet channel is formed inside the end cap, and an outlet end of the second oil inlet channel is disposed on the support portion; the motor assembly further includes: the rotor, the rotor rotationally set up in on the supporting part and inside are provided with the cooling chamber, the import of cooling chamber with the export intercommunication of second oil feed passageway, the export of cooling chamber with hold the chamber intercommunication.

According to an embodiment of the present invention, a plurality of first oil guide holes are formed in the outer periphery of the rotor, and the first oil guide holes communicate the cooling chamber with the accommodating chamber; the motor assembly further includes: the balance plates are arranged at two ends of the rotor, each balance plate is provided with a second oil guide hole corresponding to the first oil guide hole and a guide groove which is positioned at the downstream of the second oil guide hole and communicated with the second oil guide hole, and the guide groove is opened towards one end or the other end of the shell in the axial direction.

According to the utility model discloses an embodiment, the end cover with be provided with the bearing between the rotor, the end cover is provided with the third and leads the oilhole, the third lead the oilhole will second oil feed passageway with hold the chamber intercommunication, the third lead the oilhole the exit end with the bearing is just right.

The vehicle according to the present invention is briefly described below.

According to the utility model discloses a vehicle has the motor element of above-mentioned embodiment, because the utility model discloses a vehicle has the motor element of above-mentioned embodiment, therefore the coolant oil flow scope in the motor of this vehicle is wider, and the coolant oil can flow to the first direction and the second direction that hold the intracavity wall respectively along first flow channel groove and second flow channel groove to directly cool down and lubricate holding intracavity portion, reduced the temperature of motor effectively, reduced the wearing and tearing of motor, improved the performance of motor.

Additional aspects and advantages of the 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.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a cross-sectional view of a motor assembly according to an embodiment of the present invention;

fig. 2 is a top view of a housing according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a housing according to an embodiment of the present invention;

fig. 4 is a cross-sectional view of a housing, stator winding, axial fitting and end cap after mating according to an embodiment of the invention;

FIG. 5 is an enlarged partial view of circle A of FIG. 4;

FIG. 6 is an enlarged partial view of circle B of FIG. 4;

FIG. 7 is a schematic structural view of an axial fitting according to an embodiment of the present invention;

fig. 8 is a schematic structural view of an end cap according to an embodiment of the present invention;

fig. 9 is a bottom view of an end cap according to an embodiment of the present invention;

FIG. 10 is a cross-sectional view of section A-A of FIG. 9;

FIG. 11 is an enlarged partial view of circle C of FIG. 10;

FIG. 12 is a cross-sectional view of section B-B of FIG. 9;

fig. 13 is a cross-sectional view of a rotor cooling oil circuit according to an embodiment of the present invention;

fig. 14 is a schematic structural view of a rotor according to an embodiment of the present invention;

figure 15 is a cross-sectional view of a rotor according to an embodiment of the present invention;

fig. 16 is a schematic structural diagram of a balance plate according to an embodiment of the present invention

FIG. 17 is a cross-sectional view of section C-C of FIG. 16;

FIG. 18 is an enlarged fragmentary view of circle D of FIG. 17;

FIG. 19 is a cross-sectional view of a bearing lubrication and cooling oil circuit according to an embodiment of the present invention;

FIG. 20 is an enlarged fragmentary view of circle E of FIG. 19;

reference numerals:

the motor assembly 1, the housing 11, the accommodating chamber 111, the first oil inlet passage 112,

an oil distribution hole 113, a first flow passage groove 114, a second flow passage groove 115, an axial fitting 116,

second oil guide groove 1161, stator 12, stator winding 121, end cap 13,

a first oil guide groove 131, a support portion 132, a second oil inlet passage 133, a third oil guide hole 134,

the rotor 14, the cooling chamber 141, the first oil guide hole 142, the rotor core 143,

a balance plate 15, a second oil guide hole 151, a guide groove 152,

bearing 16, sealing rubber ring 161, sealing rubber ring mounting groove 162, oil outlet groove 17.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

The following describes the motor assembly 1 according to the embodiment of the present invention with reference to fig. 1-20, the motor assembly 1 includes a housing 11, two ends of the housing 11 are open and are provided with an accommodating cavity 111 inside, a first oil inlet channel 112 is provided on a circumferential wall of the housing 11, an oil distribution hole 113 communicating the first oil inlet channel 112 with the accommodating cavity 111 is formed on the housing 11, a first flow channel groove 114 and a second flow channel groove 115 are provided on an inner wall of the accommodating cavity 111, the first flow channel groove 114 surrounds the inner wall of the accommodating cavity 111 in a first direction, the second flow channel groove 115 intersects with the first flow channel groove 114 and extends in a second direction, and an outlet end of the oil distribution hole 113 is disposed in the first flow channel groove 114 or the second flow channel groove 115.

In the related art, most of the existing new energy automobile motors adopt water cooling and oil cooling modes. The water-cooled motor needs to transfer a heat source inside the motor to the outside through layer-by-layer materials and then is taken away by a water channel, and because of the existence of thermal resistance, a temperature gradient exists between a winding and a water-cooled shell, the winding cannot be directly cooled, so that temperature accumulation is caused, local hot spots are formed, and the water-cooling effect is reduced. The oil-cooled motor mainly cools the stator, an oil way is designed inside the shell, and a drainage structure is additionally arranged above the winding, so that the occupied space of the motor is enlarged due to the arrangement, and the structure of the motor is more complex. The oil-cooled motor can also adopt an oil bath mode, cooling oil is added in the motor, so that the rotor is immersed in the cooling oil, the oil is splashed onto the motor through the rotation of the rotor for cooling, the rotation resistance of the rotor can be increased by adopting the method for cooling, and the cooling effect of the cooling mode is limited.

Specifically, both ends of the housing 11 are respectively opened toward the outside, and the inside of the housing 11 is provided with a receiving cavity 111, and the receiving cavity 111 may be used to receive other parts of the motor, such as the rotor 14, the stator 12, and the like. A first oil inlet channel 112 is arranged on the peripheral wall of the housing 11, and the first oil inlet channel 112 can be used for guiding cooling oil from other systems to the inside of the motor assembly 1 and providing cooling oil for the internal structure of the motor assembly 1, so that the motor assembly 1 is cooled. The casing 11 is formed with the oil distribution hole 113 that communicates the first oil inlet passage 112 and hold the chamber 111, and the oil distribution hole 113 can directly hold the interior of chamber 111 with the cooling oil direction in the first oil inlet passage 112, cools down the inside of motor element 1.

The inner wall of the receiving cavity 111 is further provided with a first channel groove 114 and a second channel groove 115, the first channel groove 114 surrounds the inner wall of the receiving cavity 111 in a first direction, the second channel groove 115 intersects with the first channel groove 114 and extends in a second direction, wherein the first direction may be a circumferential direction of the housing 11, the second direction may be an axial direction of the housing 11, and an outlet end of the oil distribution hole 113 is disposed in the first channel groove 114 or the second channel groove 115. Therefore, the first flow channel groove 114 can guide the cooling oil flowing out of the oil distribution hole 113 further to the circumferential direction of the casing 11, and the second flow channel groove 115 can guide the cooling oil flowing out of the oil distribution hole 113 to both ends of the casing 11, thereby improving the cooling effect of the cooling oil.

In short, according to the motor assembly 1 of the present invention, the inner wall of the accommodating chamber 111 of the motor assembly 1 is provided with the first flow channel groove 114 and the second flow channel groove 115, and the first flow channel groove 114 and the second flow channel groove 115 extend toward the first direction and the second direction, respectively. The cooling oil that divides oilhole 113 to flow through can flow to the first direction and the second direction that hold chamber 111 inner wall respectively along first flow channel groove 114 and second flow channel groove 115, guarantees that the cooling oil can be in holding the circulation of chamber 111 inner wall, has improved the coverage of cooling oil to directly cool off and lubricate holding the inside of chamber 111, reduced motor element 1's temperature effectively, reduced motor element 1's wearing and tearing.

According to an embodiment of the present invention, the first flow channel groove 114 or the second flow channel groove 115 is configured to be spaced apart from each other, so that the flow rate of the cooling oil is increased, and the cooling oil can rapidly cool the inside of the receiving chamber 111. The first flow channel groove 114 and the second flow channel groove 115 may also be configured in a plurality of numbers spaced apart from each other, the first flow channel groove 114 may be arranged at intervals in the circumferential direction of the inner wall of the accommodating chamber 111, the second flow channel groove 115 may be arranged at intervals in the axial direction of the inner wall of the accommodating chamber 111, and the plurality of first flow channel grooves 114 and the plurality of second flow channel grooves 115 are arranged in an intersecting manner, which ensures that the cooling oil can be gradually spread out along the plurality of oil paths on the inner wall of the accommodating chamber 111, and further improves the cooling range and the cooling effect of the cooling oil.

According to an embodiment of the present invention, the electric machine assembly 1 further comprises a stator 12 and an end cover 13. The stator 12 is arranged in the accommodating cavity 111, the stator 12 is wound with a stator winding 121, the outer circumferential surface of the stator 12 is attached to the open end of the first flow channel groove 114 and the open end surface of the second flow channel groove 115, so that the open ends of the first flow channel groove 114 and the second flow channel groove 115 are sealed to form a channel suitable for cooling and flowing, meanwhile, cooling oil in the first flow channel groove 114 and the second flow channel groove 115 is prevented from flowing into parts in the accommodating cavity 111 and generating negative pressure on the parts, and the parts can be ensured to continue to work normally without being influenced by the cooling oil.

Specifically, the stator 12 and the accommodating cavity 111 are attached after being in interference fit, and the outer peripheral surface of the stator 12 abuts against the inner peripheral surface of the accommodating cavity 111 to seal the first flow channel groove 114 and the second flow channel groove 115, so that the cooling oil can flow in the first flow channel groove 114 and the second flow channel groove 115 to reduce the temperature of the motor assembly 1.

The end cover 13 is provided on the housing 11, and the end cover 13 closes one end of the housing 11 to prevent the cooling oil from flowing out from the other side of the receiving chamber 111 to cause a problem of leakage of the cooling oil.

According to an embodiment of the present invention, an axial fitting piece 116 is disposed on the inner wall of the accommodating cavity 111, one end of the second flow channel 115 abuts against the end cover 13, and the other end of the second flow channel 115 abuts against the axial fitting piece 116, so as to be suitable for guiding the cooling oil in the second flow channel 115 to the end cover 13 and the axial fitting piece 116. And axial fitting piece 116 can be processed alone and install in holding chamber 111, and directly process the fluting in the inner wall that holds chamber 111 among the prior art and need stretch into holding chamber 111 with the cutter, but hold chamber 111 inner space narrow and small, the inconvenient entering of cutter to lead to the difficult scheduling problem of fluting. The axial fitting piece 116 may be attached to the inner wall of the accommodating cavity 111, and one side of the axial fitting piece 116 is abutted to the stator 12 to perform a limiting function, so as to prevent the stator 12 from moving in the axial direction.

The end cover 13 is provided with an oil guide channel, the oil guide channel can communicate the second flow channel groove 115 with the inside of the housing 11, and the cooling oil flows through the oil guide channel from the second flow channel groove 115 and enters the accommodating cavity 111 in the housing 11, so as to realize the effect of cooling the stator 12 and the stator winding 121. The axial fitting 116 may also be provided with an oil guiding channel, the oil guiding channel may communicate the second flow channel 115 with the accommodating cavity 111, and the cooling oil flows through the oil guiding channel from the second flow channel 115 and enters the stator 12, so as to cool the stator 12 and the stator winding 121

According to an embodiment of the present invention, the second flow channel 115 is spaced in the circumferential direction of the housing 11, the second flow channel 115 may be configured to be plural, the oil guide channel includes the first oil guide groove 131, the first oil guide groove 131 is disposed on the end cover 13, the first oil guide groove 131 may be configured to be plural, and the first oil guide groove 131 may be configured to be a straight hole or an inclined hole. One end of the first oil guide grooves 131 is in one-to-one correspondence with the second oil guide grooves 115 and is communicated with the second oil guide grooves 131, the other end of the first oil guide grooves 131 is communicated with the accommodating cavity 111, cooling oil can flow through the first oil guide grooves 131 from the second oil guide grooves 115 and enters the accommodating cavity 111, and the oil-sprayed area of the first oil guide grooves 131 corresponds to the middle area of one end of the stator winding 121 in the axial direction.

According to an embodiment of the present invention, the oil guiding channel includes the second oil guiding groove 1161, the second oil guiding groove 1161 is disposed on the axial fitting member 116, and the second oil guiding groove 1161 can be configured to be plural, the second oil guiding grooves 1161 extend toward the center of the accommodating cavity 111, since the one end of the second oil guiding groove 1161 disposed on the axial fitting member 116 is directly supported by the stator 12, it is ensured that the cooling oil can flow in the direction of the second oil guiding groove 1161. One end of the second oil guide grooves 1161 is in one-to-one correspondence with the second flow channel grooves 115 and is communicated with the second oil guide grooves 1161, and the other end of the second oil guide grooves 1161 is communicated with the accommodating cavity 111, so that the second oil guide grooves 1161 are suitable for communicating the second flow channel grooves 115 with the accommodating cavity 111, cooling oil can flow through the second oil guide grooves 1161 from the second flow channel grooves 115 and enter the stator 12 inside the accommodating cavity 111, and the effect of cooling the stator 12 and the stator winding 121 is achieved.

The circumferential relative position of the second oil guide groove 1161 corresponds to the second flow channel grooves 115 of the inner wall of the accommodating cavity 111 one by one, and the number of the second oil guide grooves 1161 is the same, so as to ensure that the second oil guide grooves 1161 are communicated with the second flow channel grooves 115 of the inner wall of the accommodating cavity 111, and the area of the second oil guide groove 1161 after oil injection corresponds to the middle area of one end of the stator winding 121 in the axial position.

According to the utility model discloses an embodiment, axial fitting piece 116 is constructed as annular or arc, holds and is provided with out oil groove 17 in the chamber 111, and the cooling oil that covers in holding chamber 111 can receive the influence of gravity to flow downwards after absorbing the heat, until collecting in out oil groove 17 to outside flowing to motor element 1 along out oil groove 17 the utility model discloses an in particular embodiment, axial fitting piece 116 can be constructed as the arc, can more conveniently install fitting piece 116 and get into casing 11 through constructing axial fitting piece 116 as the arc to the breach department of curved axial fitting piece 116 can be used for dodging out oil groove 17, so that the cooling oil flows to in out oil groove 17, has improved the discharge rate of cooling oil.

According to the utility model discloses an embodiment, be provided with supporting part 132 on the end cover 13, supporting part 132 can set up the positive central point of end cover 13, is formed with second oil feed passageway 133 in the inside of end cover 13, and second oil feed passageway 133 communicates with first oil feed passageway 112 to be suitable for with the coolant oil in first oil feed passageway 112 direction in the second oil feed passageway 133, and the entrance point of second oil feed passageway 133 links to each other with first oil feed passageway 112, and the exit end of second oil feed passageway 133 links to each other with the opening on supporting part 132.

The motor assembly 1 further includes a rotor 14, the rotor 14 being rotatably disposed on the support portion 132, and a rotor core 143 being disposed on an outer circumference of the rotor 14. The rotor 14 is provided with a cooling chamber 141 inside, the cooling chamber 141 extends in the axial direction of the rotor 14, wherein an inlet end of the cooling chamber 141 is communicated with an outlet of the second oil inlet passage 133, an outlet of the cooling chamber 141 is communicated with the accommodating chamber 111, and cooling oil flows through the inlet end from the second oil inlet passage 133 into the cooling chamber 141, thereby lubricating and cooling the rotor 14.

According to the utility model discloses an embodiment, the periphery of rotor 14 is provided with a plurality of first oil guide holes 142, first oil guide hole 142 interval arrangement is in the periphery of rotor 14, and the one end and the cooling chamber 141 intercommunication of first oil guide hole 142, the other end of first oil guide hole 142 with hold chamber 111 intercommunication, the cooling oil in cooling chamber 141 can hold chamber 111 through the flow direction of first oil guide hole 142, wherein, first oil guide hole 142 can be constructed into front end oilhole and rear end oilhole, front end oilhole and rear end oilhole are at the radial processing of rotor 14, and the quantity of front end oilhole and rear end oilhole equals. The front end oil hole may be on the side of the shoulder near the rotor 14, and the diameter of the rear end oil hole is greater than the diameter of the front end oil hole.

The motor assembly 1 further includes balance plates 15, the balance plates 15 are disposed at two ends of the rotor 14, the balance plate 15 at each end is disposed around the outer circumferential wall of the rotor 14, and each balance plate 15 is provided with a second oil guide hole 151 and a guide groove 152.

The second oil guide hole 151 may be configured in a plurality of numbers, the plurality of second oil guide holes 151 correspond to the plurality of first oil guide holes 142 one to one, the cooling oil in the cooling chamber 141 may flow from the first oil guide holes 142 to the second oil guide holes 151, the guide groove 152 is disposed downstream of the second oil guide holes 151 and connected to the second oil guide holes 151, the guide groove 152 may also be configured in a plurality and disposed in one to one correspondence with the plurality of second oil guide holes 151, the other side of the guide groove 152 is opened toward one end or the other end in the axial direction of the housing 11, and there is a certain angle between the guide groove 152 and the second oil guide holes 151, thereby discharging the cooling oil in the second oil guide holes 151 into the receiving chamber 111.

According to the utility model discloses an embodiment, be provided with bearing 16 between end cover 13 and the rotor 14, be provided with third oil guide hole 134 on the end cover 13, third oil guide hole 134 with second oil feed passageway 133 with hold chamber 111 and communicate, specifically, the entrance point and the second oil feed passageway 133 intercommunication of third oil guide hole 134, the exit end and the bearing 16 of third oil guide hole 134 are just right, the cooling oil can follow second oil feed passageway 133 and flow through third oil guide hole 134, spray to bearing 16 to the lubrication and the cooling of bearing 16 are realized.

The bearing 16 is processed with a sealing rubber ring mounting groove 162, a sealing rubber ring 161 is mounted in the sealing rubber ring mounting groove 162 and is in interference fit with the excircle of the bearing 16, the excircle of the rotating shaft is in interference fit with the excircle of the bearing 16, and the parts are matched to form a cavity which belongs to a part of a bearing 16 mounting hole of the bearing 16 of the end cover 13;

according to the utility model discloses an embodiment, the main flow path of coolant oil is in the stator 12 cooling oil circuit: the cooling oil passes through the first oil inlet passage 112 and the oil distribution hole 113, and the first flow channel groove 114 and the second flow channel groove 115, flows through the outer circumferential surfaces of the stator 12 and the first flow channel groove 114, and the second flow channel groove 115, and then reaches the axial fitting 116 and the end cover 13 at both ends of the stator 12, and is sprayed onto the stator winding 121 at both ends of the stator 12 through the second oil guide groove 1161 of the axial fitting 116 and the first oil guide groove 131 of the end cover 13, and the cooling oil enters the oil outlet groove 17 at the bottom of the housing 11 due to the action of gravity, and then is led out to the outside of the motor assembly 1.

The flow locus of the cooling oil path of the stator 12 is as follows: the cooling oil flows from the housing 11 through the first oil inlet passage 112, the oil distribution hole 113, the first flow path groove 114, the second flow path groove 115, and finally to the stator 12.

The flow trajectory of the cooling oil path of the stator winding 121 is: the cooling oil flows from the housing 11 through the first oil inlet passage 112, the oil distribution hole 113, the first flow path groove 114, the second flow path groove 115, the axial fitting 116, the second oil guide groove 1161, and finally to the stator winding 121 at one end of the stator 12.

Another flow path of the cooling oil path of the stator winding 121 is: the cooling oil flows from the housing 11 through the first oil inlet passage 112, the oil distribution hole 113, the first flow channel groove 114, the second flow channel groove 115, the first oil guide groove 131, and finally to the stator winding 121 at one end of the stator 12

According to the utility model discloses an embodiment, rotor 14 cooling oil circuit's flow trajectory is: the cooling oil flows from the housing 11 through the first oil inlet passage 112, the end cover 13, the second oil inlet passage 133, the support portion 132, the cooling chamber 141, the first oil guide hole 142, the second oil guide hole 151 of the balance plate 15, the guide groove 152, and finally to the stator winding 121 of the stator 12.

The flow trajectory of the cooling oil path of the stator winding 121 is: the flow locus of the cooling oil path of the rotor 14 is as follows: the cooling oil flows from the housing 11 through the first oil inlet passage 112, the end cover 13, the second oil inlet passage 133, the support portion 132, the cooling chamber 141, the first oil guide hole 142, the second oil guide hole 151 of the balance plate 15, the guide groove 152, and finally to the stator winding 121. The cooling oil enters the oil outlet groove 17 at the bottom of the housing 11 due to the action of gravity and is then led out to the outside of the motor assembly 1.

According to the utility model discloses an embodiment, the main flow trajectory of cooling oil in bearing 16 lubrication and cooling oil circuit is: the cooling oil is sprayed to the annular area of the bearing 16 where the balls of the bearing 16 are located through the second oil inlet channel 133 and the third oil guide hole 134, so that the bearing 16 can be directly lubricated and cooled, and a part of the cooling oil enters the cavity under the action of gravity after being blocked by the bearing 16, and as the cooling oil in the cavity is accumulated, the cooling oil can exceed the inner ring of the bearing 16, and the part of the cooling oil flows between the inner ring and the outer ring of the bearing 16 to reach the inside of the motor.

The flow trajectories of the lubricating and cooling oil paths of the bearing 16 are: the cooling oil flows from the housing 11 through the first oil inlet passage 112, the end cover 13, the second oil inlet passage 133, the third oil guide hole 134, and finally to the bearing 16.

Another flow path for the bearing 16 lubrication and cooling oil paths is: the cooling oil flows from the housing 11 through the first oil inlet passage 112, the end cover 13, the second oil inlet passage 133, the third oil guide hole 134, the cavity, and finally to the bearing 16. The cooling oil enters the oil outlet groove 17 at the bottom of the housing 11 due to the action of gravity and is then led out to the outside of the motor assembly 1.

The vehicle according to the present invention is briefly described below.

According to the utility model discloses a vehicle has motor element 1 of above-mentioned embodiment, because the utility model discloses a vehicle has motor element 1 of above-mentioned embodiment, and consequently the coolant oil flow range in the motor of this vehicle is wider, and the coolant oil can flow to the first direction and the second direction that hold chamber 111 inner wall respectively along first flow channel groove 114 and second flow channel groove 115 to directly cool off and lubricate holding chamber 111 inside, reduced the temperature of motor effectively, reduced the wearing and tearing of motor, improved the performance of motor.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of 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 construed as limiting the present invention.

In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features.

In the description of the present invention, "a plurality" means two or more.

In the description of the present invention, the first feature "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact with each other not directly but through another feature therebetween.

In the description of the invention, the first feature being "on", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (11)

1. An electric machine assembly, comprising:

the oil separator comprises a shell (11), wherein two ends of the shell (11) are open, a containing cavity (111) is arranged in the shell (11), a first oil inlet channel (112) is arranged on the peripheral wall of the shell (11), and an oil distribution hole (113) for communicating the first oil inlet channel (112) with the containing cavity (111) is formed in the shell (11);

a first flow channel groove (114) and a second flow channel groove (115) are arranged on the inner wall of the accommodating cavity (111), the first flow channel groove (114) surrounds the inner wall of the accommodating cavity (111) in a first direction, and the second flow channel groove (115) intersects with the first flow channel groove (114) and extends in a second direction;

an outlet end of the oil distribution hole (113) is disposed in the first flow channel groove (114) or the second flow channel groove (115).

2. The electric machine assembly according to claim 1, characterized in that the first flow channel groove (114) and/or the second flow channel groove (115) are configured in a plurality arranged spaced apart from each other.

3. The electric machine assembly of claim 2, further comprising:

a stator (12), the stator (12) being disposed in the accommodation chamber (111), an outer circumferential surface of the stator (12) closing an open end of the first flow channel groove (114) and an open end of the second flow channel groove (115);

an end cap (13), the end cap (13) being disposed on the housing (11) and closing one end of the housing (11).

4. The electric machine assembly according to claim 3, characterized in that an axial fitting piece (116) is arranged on the inner wall of the accommodating cavity (111), two ends of the second flow channel groove (115) are respectively abutted against the end cover (13) and the axial fitting piece (116), and an oil guide channel communicating the second flow channel groove (115) with the accommodating cavity (111) is arranged on the end cover (13) and/or the axial fitting piece (116).

5. The motor assembly according to claim 4, wherein the second flow channel grooves (115) are arranged at intervals in a circumferential direction of the housing (11), and the oil guide passage includes a first oil guide groove (131);

wherein the first oil guide groove (131) is provided on the end cap (13), and the first oil guide groove (131) is configured in a plurality in one-to-one correspondence with one end of the second flow channel groove (115) to communicate the corresponding second flow channel groove (115) with the receiving chamber (111).

6. The electric machine assembly according to claim 5, characterized in that the oil guide passage comprises a second oil guide groove (1161), the second oil guide groove (1161) being provided on the axial fitting (116) and configured in a plurality in one-to-one correspondence with the other ends of the plurality of second flow path grooves (115), the second oil guide groove (1161) being adapted to communicate the second flow path grooves (115) with the accommodation chamber (111).

7. An electric machine assembly according to claim 6, characterized in that the axial fitting (116) is configured as a ring or as an arc.

8. A motor assembly according to claim 3, wherein a support portion (132) is provided on the end cover (13), a second oil inlet passage (133) communicating with the first oil inlet passage (112) is formed inside the end cover (13), and an outlet end of the second oil inlet passage (133) is provided on the support portion (132);

the motor assembly further includes:

the rotor (14), rotor (14) rotationally set up on supporting part (132) and inside is provided with cooling chamber (141), the import of cooling chamber (141) with the export intercommunication of second oil feed passageway (133), the export of cooling chamber (141) with hold chamber (111) intercommunication.

9. The motor assembly according to claim 8, wherein the rotor (14) is provided at an outer circumference thereof with a plurality of first oil guide holes (142), the first oil guide holes (142) communicating the cooling chamber (141) with the receiving cavity (111);

the motor assembly further includes: the balance plates (15) are arranged at two ends of the rotor (14), each balance plate (15) is provided with a second oil guide hole (151) corresponding to the first oil guide hole (142) and a guide groove (152) located at the downstream of the second oil guide hole (151) and communicated with the second oil guide hole (151), and the guide groove (152) is opened towards one end or the other end of the shell (11) in the axial direction.

10. The motor assembly according to claim 9, wherein a bearing (16) is disposed between the end cover (13) and the rotor (14), the end cover (13) is provided with a third oil guide hole (134), the third oil guide hole (134) communicates the second oil inlet passage (133) with the accommodating chamber (111), and an outlet end of the third oil guide hole (134) is opposite to the bearing (16).

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

Images