WO2022037263A1 - Oil-water combined cooling electric motor system, and vehicle - Google Patents

Oil-water combined cooling electric motor system, and vehicle Download PDF

Info

Publication number
WO2022037263A1
WO2022037263A1 PCT/CN2021/103018 CN2021103018W WO2022037263A1 WO 2022037263 A1 WO2022037263 A1 WO 2022037263A1 CN 2021103018 W CN2021103018 W CN 2021103018W WO 2022037263 A1 WO2022037263 A1 WO 2022037263A1
Authority
WO
WIPO (PCT)
Prior art keywords
oil
rotor
channel
casing
rotor shaft
Prior art date
Application number
PCT/CN2021/103018
Other languages
French (fr)
Chinese (zh)
Inventor
高一
赵慧超
徐德才
李全
刘金锋
文彦东
张颖
苍衍
王宏宝
侯毅鹏
Original Assignee
中国第一汽车股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中国第一汽车股份有限公司 filed Critical 中国第一汽车股份有限公司
Publication of WO2022037263A1 publication Critical patent/WO2022037263A1/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/24—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors with channels or ducts for cooling medium between the conductors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium

Definitions

  • the present application relates to the technical field of drive assemblies, for example, to an oil-water hybrid cooling motor system and a vehicle.
  • the water-cooled motor in the related art cools the stator core by cooling the casing, but the end of the stator winding with serious heat dissipation cannot be directly cooled, and the heat of the winding can only be conducted to the casing through the air for cooling, and the cooling effect is poor.
  • Most of the oil-cooled motors in the related art only cool the ends of the stator windings, but cannot effectively cool the stator iron core and rotor magnets.
  • the traditional oil-cooled motors also need to add a cooler to cool the oil, which is costly. , takes up a lot of space.
  • the present application provides an oil-water hybrid cooling motor system and a vehicle, which can simultaneously cool the stator iron core, the stator winding and the rotor magnetic steel, with good cooling effect, low cost and small occupied space.
  • An embodiment provides an oil-water hybrid cooling motor system, including: a casing; a stator inserted inside the casing, the stator including a stator core and end windings; and a rotor inserted into the stator
  • the inner side of the rotor includes a rotor shaft, a rotor iron core embedded on the rotor shaft, and a plurality of magnetic steels embedded in the rotor iron core, and the plurality of magnetic steels along the rotor iron core radially and away from the center of the rotor core; a first oil passage, opened on the casing and extending between the inner wall of the casing and the outer wall of the stator core; an oil injection member, provided On the inner side of the casing and at the end of the stator iron core, the oil injection member is provided with an oil injection hole communicating with the first oil passage, and the oil injection hole is set for cooling oil At least spray to the end winding; a water channel is opened on the casing, and the water channel and at least a part of
  • the first oil passages are distributed along the circumference of the casing, and the area of the casing where the water passages are opened accounts for two-thirds of the outer peripheral area of the casing.
  • the first oil passage includes:
  • each radial oil inlet flow channel is communicated with the circumferential oil inlet flow channel, and each radial oil inlet flow channel includes a first radial oil inlet groove opened on the casing and a first radial oil inlet channel opened on the stator iron core A second radial oil inlet groove on the outer wall of the radiator and corresponding to the first radial oil inlet groove, and the water channel is perpendicular to the radial oil inlet flow channel.
  • the oil guide is a dynamic balance plate
  • the dynamic balance plate is embedded on the casing
  • the dynamic balance plate is located at the end of the rotor core;
  • the oil guide is a rotor pressure ring, the rotor pressure ring is embedded on the casing, and the rotor pressure ring presses the rotor iron core axially on the rotor shaft; or,
  • the oil guiding member is a shaft shoulder on the rotor shaft, and the shaft shoulder is axially compressed with the rotor iron core.
  • the fuel injection member is annular, and the two fuel injection members are respectively disposed at both ends of the stator iron core.
  • the oil-water hybrid cooling motor system further includes a bearing, the rotor shaft is coupled to the housing through the bearing, and a first port communicating with the oil inlet channel is further opened on the housing.
  • Two oil throwing flow channels, the second oil throwing flow channel is configured to spray the cooling oil at least to the bearing.
  • the oil-water hybrid cooling motor system further includes a bearing, the rotor shaft is coupled to the housing through the bearing, a flow guide is arranged on the rotor shaft, and a flow guide is arranged on the flow guide.
  • the flow guide is a rotor pressure ring embedded on the rotor shaft, and the rotor pressure ring is configured to axially press the rotor iron core on the rotor shaft.
  • the rotor shaft is a hollow shaft
  • the system further includes a conduit nested in the rotor shaft, the inner cavity of the conduit is the oil inlet channel, and the outer portion of the conduit is the oil inlet channel. diameter less than the inner diameter of said rotor shaft; or,
  • the rotor shaft is a hollow shaft, the inner cavity of the rotor shaft is the oil inlet channel, the inner wall of the rotor shaft is provided with a drainage groove, and the helical drainage groove is along the axial direction of the rotor shaft extend.
  • An embodiment provides a vehicle including the oil-water hybrid cooling motor system as described above.
  • FIG. 1 is a cross-sectional view of an oil-water hybrid cooling motor system provided by an embodiment of the application;
  • FIG. 2 is a schematic diagram of a first oil passage on a partial casing provided by an embodiment of the present application
  • FIG. 3 is a schematic diagram of a water channel on a part of the casing provided by an embodiment of the present application.
  • FIG. 4 is a schematic diagram of a water channel and a first oil channel on a part of the casing provided by an embodiment of the present application;
  • FIG. 5 is a schematic structural diagram of a stator core provided by an embodiment of the application.
  • FIG. 6 is a schematic structural diagram of a fuel injection member provided by an embodiment of the application.
  • FIG. 7 is a side view of a rotor core provided by an embodiment of the application.
  • FIG. 8 is a side view of a dynamic balance plate provided by an embodiment of the present application.
  • FIG. 9 is a first structural schematic diagram of a rotor shaft according to another embodiment of an embodiment of the application.
  • FIG. 10 is a second structural schematic diagram of a rotor shaft according to another embodiment of an embodiment of the present application.
  • the terms “installed”, “connected” and “connected” should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two components.
  • installed should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two components.
  • this embodiment provides an oil-water hybrid cooling motor system, including a housing 1 , a stator 2 and a rotor 3 disposed in the housing 1 .
  • the stator 2 is fixedly inserted into the inner cavity of the housing 1
  • the rotor 3 is rotatably inserted into the inner ring of the stator 2 .
  • the stator 2 includes a stator core 21 and end windings 22 .
  • the stator core 21 is substantially annular, and the end windings 22 are wound around the inner peripheral surface of the stator core 21 .
  • the rotor 3 includes a rotor shaft 31 , a rotor iron core 32 and a plurality of magnetic steels 33 .
  • the rotor shaft 31 is rotatably supported on the housing 1 through the bearing 7 .
  • the rotor iron core 32 is fitted on the rotor shaft 31 and can rotate integrally with the rotor shaft 31 .
  • the outer peripheral surface of the rotor iron core 32 and the inner peripheral surface of the stator iron core 21 are provided opposite to each other with a predetermined gap therebetween.
  • the rotor core 32 is formed by stacking a plurality of rotor chips in the axial direction. Each rotor punch is in the shape of a disc. A magnet hole provided to embed the magnet steel 33 is formed inside the rotor core 32 . These magnet holes are distributed along the radial direction of the rotor iron core 32 and away from the center of the rotor iron core 32 , and each magnet hole is disposed through the rotor iron core 32 along the axial direction of the rotor iron core 32 .
  • the casing 1 is provided with a first oil passage 11 and a water passage 12 for cooling the stator core 21 and the end windings 22 .
  • the first oil passage 11 extends between the inner wall of the housing 1 and the outer wall of the stator core 21 .
  • the cooling oil is injected into the casing 1 and flows along the first oil passage 11 between the casing 1 and the stator core 21 to cool the stator core 21 with oil.
  • the fuel injector 4 , the housing 1 and the stator core 21 form an oil spray system for the end winding 22 .
  • the inner side of the casing 1 is also inserted with an oil injection member 4 , and the oil injection member 4 is located at the end of the stator iron core 21 .
  • the fuel injection member 4 is provided with an injection hole 41 which communicates with the first oil passage 11 .
  • the cooling oil flowing along the first oil passage 11 to between the inner wall of the casing 1 and the outer wall of the stator core 21 can be sprayed at least to the end winding 22 from the oil injection hole 41 of the oil injection member 4 under the action of oil pressure , to oil-cool the end windings 22 at the same time.
  • the water channels 12 on the casing 1 and at least part of the first oil channels 11 are stacked and arranged in a staggered manner.
  • Oil-water mixed cooling is adopted, and oil-cooling is carried out at the same time as water-cooling to effectively cool the stator core 21 and the end windings 22, so as to avoid the temperature of the cooling oil after cooling the stator core 21 rising and the cooling of the end windings 22 being insufficient.
  • improve the cooling capacity of the motor and at the same time, the cooling oil is cooled by the cooling water, no additional cooler is required, the cost is reduced, and the occupied space of the entire motor system is reduced.
  • the first oil passages 11 are distributed along the circumferential direction of the casing 1 to uniformly cool the stator core 21 .
  • the local thickness of the casing 1 is increased due to the lamination of the water channel 12 and the first oil channel 11 .
  • the area of the casing 1 where the water channel 12 is opened accounts for two-thirds of the outer peripheral area of the casing 1, taking into account the cooling effect and the thickness and weight of the casing 1 to ensure the stator core 21 and the end windings. At the same time, the cooling effect of 22 is avoided, and the shell 1 is too thick and heavy.
  • the size of the area where the first oil channel 11 and the water channel 12 are arranged and the overlapping area of the water channel 12 and the first oil channel 11 can be adjusted according to factors such as motor power.
  • the area where the water channel 12 is provided may include multiple areas, and the multiple areas are arranged at intervals along the circumferential direction of the casing 1 , so as to uniformly cool the cooling oil on the entire casing 1 .
  • the first oil passage 11 includes a circumferential oil inlet flow passage 111 and a plurality of radial oil inlet flow passages 112 .
  • the circumferential oil inlet flow channel 111 is disposed in the axial middle portion of the housing 1 .
  • a plurality of radial oil inlet flow passages 112 are arranged at intervals along the circumferential direction of the housing 1 , and each radial oil inlet flow passage 112 communicates with the circumferential oil inlet flow passage 111 .
  • the cooling oil enters the circumferential oil inlet channel 111 from the oil inlet 131 of the oil channel 13 on the casing 1, and flows along the circumferential oil inlet channel 111 to the entire circumference of the casing 1.
  • the cooling oil in the circumferential oil inlet channel 111 Oil is split to each radial oil inlet runner 112 .
  • Each radial oil inlet channel 112 includes a first radial oil inlet groove 1121 formed on the housing 1 and a second radial oil inlet groove 1121 formed on the outer wall of the stator core 21 and corresponding to the first radial oil inlet groove 1121 .
  • Oil inlet 211 see Figure 5).
  • the water channel 12 is perpendicular to the radial oil inlet flow channel 112 to improve the heat exchange efficiency between the cooling water and the cooling oil.
  • the water channel 12 includes a first flow channel 121 and a second flow channel 122 that communicate with each other.
  • the first flow channel 121 is located upstream of the second flow channel 122 , and the first flow channel 121 and the second flow channel 122 are communicated through an intermediate flow channel 123 .
  • the first flow channel 121 includes a first branch 1211 and a second branch 1212 that are communicated.
  • the first branch 1211 and the second branch 1212 extend along the circumferential direction of the casing 1, and the first branch 1211 and the second branch 1212 are arranged side by side along the axial direction of the casing 1.
  • the cooling in the first branch 1211 and the second branch 1212 The water flows in the opposite direction, and the first branch 1211 is located upstream of the second branch 1212 .
  • the second flow channel 122 includes a third branch 1221 and a fourth branch 1222 that communicate with each other.
  • the third branch 1221 and the fourth branch 1222 extend along the circumferential direction of the casing 1 and are arranged side by side along the axial direction of the casing 1 .
  • the cooling water in the third branch 1221 and the fourth branch 1222 flow in opposite directions, and the third branch 1221 and the fourth branch 1222 flow in opposite directions.
  • the branch 1221 is located upstream of the fourth branch 1222 .
  • the cooling water in the water storage device (not shown) is pumped from the water inlet 14 on the first branch 1211 into the first branch 1211, then flows into the second branch 1212 through the first branch 1211, and then flows into the second branch 1212 through the intermediate flow channel 123.
  • the third branch 1221 flows into the fourth branch 1222 from the third branch 1221 , and finally flows back to the water storage device through the drain port 15 on the fourth branch 1222 .
  • the cooling water in the water storage device flows into the water channel 12 again, and circulates in this way to continuously cool the cooling oil in the first oil channel 11 .
  • the shape of the first oil passage 11 and the water passage 12 and the overlapping area of the first oil passage 11 and the water passage 12 can be adjusted according to factors such as motor power and working state, so as to adjust the exchange of cooling water and cooling oil.
  • Thermal efficiency is not limited here.
  • at least one of the first oil passage 11 and the water passage 12 may be provided in a shape spirally extending in the circumferential direction of the casing 1 .
  • the water channel 12 in this embodiment is disposed on the side of the first oil channel 11 away from the rotor iron core 32 , the cooling water cools the cooling oil, and the cooling oil cools the rotor iron core 32 and the end windings 22 .
  • the water channel 12 may also be provided on the side of the first oil channel 11 close to the rotor core 32 , or the water channel 12 may be provided on the inner and outer sides of the first oil channel 11 respectively.
  • the casing 1 provided with the first oil channel 11 and the water channel 12 adopts a split structure in FIGS. 2-4 .
  • the entire housing 1 can be a one-piece structure.
  • the first oil passage 11 and the water passage 12 may be integrally cast with the casing 1 .
  • the above-mentioned fuel injection member 4 is annular, and the fuel injection member 4 is inserted into the inner side of the housing 1 .
  • the two fuel injection members 4 are respectively disposed at both ends of the stator core 21 , and the axial direction of the fuel injection members 4 is perpendicular to the axial direction of the stator core 21 and the casing 1 .
  • the oil injection member 4 is provided with an oil injection groove 42 , and the oil injection groove 42 communicates with the first oil passage 11 located between the inner wall of the housing 1 and the outer wall of the stator core 21 .
  • the end face of the fuel injection member 4 is in sealing contact with the end face of the stator iron core 21 .
  • the fuel injection member 4, the casing 1 and the stator iron core 21 form a sealed fuel injection cavity.
  • the fuel injection hole 41 on the fuel injection member 4 communicates with the fuel injection cavity. Spray to the end windings 22 .
  • the fuel injection groove 42 extends along the circumferential direction of the annular fuel injection member 4 , and the extension length of the fuel injection groove 42 is approximately two-thirds of the circumferential direction of the fuel injection member 4 .
  • the oil injection groove 42 can also be arranged to extend along the entire circumference of the annular oil injection member 4 , so that the oil injection groove 42 communicates with each of the radial oil inlet flow passages 112 .
  • a plurality of oil injection holes 41 are arranged at intervals along the circumferential direction of the oil injection member 4 to ensure that the cooling oil is uniformly sprayed to each part of the end winding 22 .
  • a plurality of fuel injection holes 41 are arranged at intervals along the extending direction of the fuel injection member 4 to form a row of fuel injection holes 41 .
  • Multiple rows of oil injection holes 41 can be provided along the axial direction of the fuel injection member 4 , and the multiple rows of oil injection holes 41 can also be arranged in dislocation along the extending direction of the fuel injection member 3 to improve the uniformity of cooling oil injection.
  • the shape of the fuel injection hole 41 may be set in a cylindrical shape, a conical shape, or the like, which is not limited herein.
  • the rotor 3 is provided with a second oil passage for cooling the magnetic steel 33 and the end windings 22 .
  • the second oil channel includes an oil inlet channel 311 , a magnetic steel cooling channel 321 , an oil guide channel 51 and a first oil throwing channel 52 .
  • the oil inlet channel 311 is formed on the rotor shaft 31 .
  • the rotor shaft 31 is a hollow shaft, and the inner cavity of the rotor shaft 31 is the oil inlet channel 311 .
  • the rotor shaft 31 is provided with an oil inlet hole 312 penetrating the thickness direction of the rotor shaft 31 .
  • the oil inlet hole 312 is a part of the oil inlet channel 311 .
  • the rotor shaft 31 is further provided with an oil guide member, and the oil guide member is located at the axial end of the rotor core 32 .
  • the oil guiding flow channel 51 and the first oil throwing flow channel 52 communicating with the oil guiding flow channel 51 are opened on the oil guiding member.
  • the oil guiding channel 51 on the oil guiding member communicates with the end of the oil inlet hole 312 away from the center of the rotor shaft 31 .
  • there are also two oil inlet holes 312 which are respectively communicated with the oil guide channels 51 on the two oil guide members.
  • the oil guide channel 51 is an oil guide groove formed on the oil guide member.
  • the first oil throwing channel 52 communicates with the oil guiding channel 51 and penetrates through the oil guiding member.
  • the magnetic steel cooling flow channel 321 is opened on the rotor iron core 32 and is located at the connection between the rotor iron core 32 and the magnetic steel 33 , that is, part of the surface of the magnetic steel 33 is exposed to the magnetic steel cooling flow channel 321 .
  • the magnetic steel cooling flow channel 321 axially extends through the rotor core 32 .
  • the oil guide channel 51 communicates the oil inlet channel 311 with the magnetic steel cooling channel 321 .
  • the cooling oil in the oil storage device is pumped to the oil inlet channel 311 , and enters the oil guide channel 51 of the oil guide member through the oil inlet hole 312 of the oil inlet channel 311 .
  • Part of the cooling oil in the oil guide channel 51 enters the magnetic steel cooling channel 321 to cool the magnetic steel 33 with oil.
  • Another part of the cooling oil in the oil guide channel 51 is thrown out obliquely in the radial direction of the rotor core 32 under the action of the rotational centrifugal force of the rotor 3 , and reaches the end winding 22 of the stator 2 to cool the end winding 22 with oil. .
  • the rotor iron core 32 is further provided with a magnetic steel reinforced cooling channel 322 to further oil-cool the magnetic steel 33 .
  • the magnetic steel reinforced cooling channel 322 axially penetrates the rotor core 32 and is disposed close to the magnetic steel 33 .
  • the cooling oil in the magnetic steel reinforced cooling channel 322 cools the magnetic steel 33 .
  • the oil guide flow channel 51 is disposed on the oil guide member in an annular shape, so that the oil guide flow channel 51 communicates with all the magnetic steel cooling flow channels 321 and the magnetic steel reinforcement cooling flow channels 322 .
  • a non-zero included angle is formed between the first oil slinger flow channel 52 and the axis of the rotor iron core 32 .
  • the first oil throwing channel 52 may also have other shapes, which are not limited herein.
  • the number of the first oil throwing channels 52 is also not limited.
  • the oil guide member is a dynamic balance plate 5 .
  • the dynamic balance plate 5 is provided with a mounting hole 53 , the dynamic balance plate 5 is embedded in the housing 1 through the mounting hole 53 , and is located at the end of the rotor core 32 , and is configured to adjust the dynamic balance of the rotor 3 .
  • the dynamic balance plate 5 is directly used as an oil guide, without adding a new structure, which reduces the quality and occupied space of the entire motor system.
  • two dynamic balance plates 5 are provided, and the two dynamic balance plates 5 are respectively provided at both ends of the rotor core 32 in the axial direction.
  • the oil guide channel 51 includes a plurality of radial grooves 511 and annular grooves 512 formed on the dynamic balance plate 5 .
  • One end of the radial groove 511 is communicated with the mounting hole 53 , and the cooling oil in the oil inlet hole 312 of the rotor shaft 31 flows into the annular groove 512 along the radial groove 511 .
  • a rotor pressure ring 6 is embedded on the rotor shaft 31 , and the rotor pressure ring 6 presses the rotor iron core 32 and the two dynamic balance plates 5 axially on the shoulder 313 of the rotor shaft 31 .
  • the dynamic balance plate 5 may not be provided, but the rotor pressing ring 6 may be fitted with the rotor iron core 32 , and in this case, the rotor pressing ring 6 may be used as an oil guide.
  • the dynamic balance plate 5 at the rear end of the rotor shaft 31 is cancelled, and the rotor pressing ring 6 presses the rotor iron core 32 and the dynamic balance plate 5 at the front end of the rotor shaft 31 axially on the rotor shaft 31.
  • At least one of the rotor pressure ring 6 and the dynamic balance plate 5 is used as an oil guide.
  • the rotor shaft 31 of this embodiment is provided with a shoulder 313 for positioning the dynamic balance plate 5 .
  • the dynamic balance plate 5 may not be provided, the shaft shoulder 313 and the rotor iron core 32 are pressed axially, and the shaft shoulder 313 is directly used as an oil guide.
  • the oil guide member may also be other structures disposed on the rotor shaft 31, which is not limited herein.
  • the rotor shaft 31 is also provided with a second oil throwing flow channel 315 that communicates with the oil inlet flow channel 311, and the cooling oil can be sprayed at least to the bearing 7 from the second oil throwing flow channel 315, so as to cool the oil and cool it down.
  • the second oil throwing channel 315 communicates with the inner cavity of the rotor shaft 31 and penetrates the wall thickness of the rotor shaft 31 .
  • the second oil throwing channel 315 is disposed at the rear end of the rotor shaft 31 close to the bearing 7 .
  • the second oil throwing channel 315 forms a non-zero included angle with the axis of the rotor shaft 31 to guide the cooling oil to be thrown to the bearing 7 as much as possible.
  • the number and shape of the second oil throwing channels 315 are not limited.
  • the rotor shaft 31 is provided with a flow guide member, and the flow guide member is provided with at least one flow guide structure of an oil guide slope 61 and an oil guide groove.
  • the cooling oil sprayed onto the end winding 22 by the oil injection hole 41 of the fuel injection member 4 and the cooling oil thrown onto the end winding 22 by the first oil throwing channel 52 on the dynamic balance plate 5 partially drop to the end winding 22 .
  • the flow guide member is the rotor pressure ring 6
  • the rotor pressure ring 6 is provided with an oil guide slope 61 .
  • oil guiding structures such as oil guiding grooves may also be provided on the rotor pressure ring 6 .
  • the deflector may also be a dynamic balance plate 5 or other structures, which are not limited herein.
  • the inner cavity of the rotor shaft 31 is set larger.
  • the oil intake at low speed will be insufficient, and the inner cavity of the rotor shaft 31 cannot be filled, resulting in the second oil throwing channel 315 .
  • the cooling oil thrown to the bearing 7 is insufficient, which affects the cooling and lubrication of the bearing 7.
  • a conduit 8 can be nested in the rotor shaft 31 , the inner cavity of the conduit 8 is the oil inlet channel 311 , and the outer diameter of the conduit 8 is smaller than the inner diameter of the rotor shaft 31 , so as to It is ensured that the cooling oil can effectively fill the inner cavity of the conduit 8 , thereby improving the cooling effect on the bearing 7 .
  • the conduit 8 is provided with a through hole, so that the inner cavity of the conduit 8 is communicated with the oil guiding channel 51 of the oil guiding member.
  • a drainage groove 314 may also be provided on the inner wall of the rotor shaft 31 , the drainage groove 314 is helical, and the helical drainage groove 314 extends along the axial direction of the rotor shaft 31 to cool the front end of the rotor shaft 31 .
  • the oil is guided to the rear end of the rotor shaft 31, and the filling capacity of the cooling oil is improved.
  • the drainage groove 314 may also have other shapes, which are not limited herein.
  • the casing 1 is provided with a first oil passage 11 and a water passage 12 for cooling the stator iron core 21 and the end windings 22 .
  • the cooling oil in the first oil passage 11 on the casing 1 and the stator core 21 cools the stator core 21 .
  • the fuel injection member 4 , the casing 1 and the stator core 21 form an oil spray system for the end winding 22 to cool the end winding 22 .
  • the water channel 12 on the housing 1 and at least part of the first oil channel 11 are stacked and alternately arranged, and oil-water mixed cooling is adopted, and oil cooling is performed at the same time as water cooling, so as to effectively cool the stator iron core 21 and the end windings 22 and avoid cooling the stator iron.
  • the rotor 3 is provided with a second oil passage, wherein the cooling oil in the oil inlet passage 311 of the rotor shaft 31 enters the magnetic steel on the rotor iron core 32 under the guidance of the oil guiding passage 51 of the oil guiding member In the cooling channel 321 , the magnetic steel 33 is cooled, and at the same time, part of the cooling oil is thrown to the end winding 22 through the first oil throwing channel 52 of the oil guide to further cool the end winding 22 .
  • the housing 1 is also provided with a second oil slinger runner 315 that communicates with the oil inlet runner 311 , and the cooling oil in the oil inlet runner 311 is sprayed to the bearing 7 through the second oil slinger runner 315 to cool and cool the oil.
  • the oil-water hybrid cooling motor system of this embodiment can simultaneously cool the stator iron core 21 , the end windings 22 , the magnetic steel 33 and the bearing 7 , and the stator iron core 21 and the end windings 22 are cooled by water cooling Cooling, the cooling effect is good, and at the same time, there is no need to set up an additional cooler, which reduces the cost and reduces the occupied space of the entire motor system.
  • This embodiment also provides a vehicle, including the above-mentioned oil-water hybrid cooling motor system, which has good cooling effect and high continuous power of the motor system.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Cooling System (AREA)

Abstract

An oil-water combined cooling electric motor system and a vehicle. The electric motor system comprises a housing, a stator, and a rotor. A first oil channel is provided in the housing and extends to a position between the housing and a stator core; an oil spray member is arranged on an inner side of the housing and located at an end of the stator core, and the oil spray member is provided with an oil spray hole which is in communication with the first oil channel; a water channel is provided in the housing and is overlapped and staggered with at least part of the first oil channel; an oil guide member is arranged on a rotor shaft and located at an end of a rotor iron core; and a second oil channel comprises an oil inlet flow channel on the rotor shaft, a magnet cooling flow channel between the rotor iron core and a magnet, and an oil guide flow channel and a first oil throwing flow channel which are provided in the oil guide member, with the oil guide flow channel being configured to be in communication with the oil inlet flow channel and the magnet cooling flow channel, and the first oil throwing flow channel being configured to at least throw cooling oil to an end winding.

Description

油水混合冷却电机***及车辆Oil-water hybrid cooling motor system and vehicle
本申请要求申请日为2020年8月18日、申请号为202010833898.6的中国专利申请的优先权，该申请的全部内容通过引用结合在本申请中。This application claims the priority of a Chinese patent application with an application date of August 18, 2020 and an application number of 202010833898.6, the entire contents of which are incorporated herein by reference.
技术领域technical field
本申请涉及驱动总成技术领域，例如涉及一种油水混合冷却电机***及车辆。The present application relates to the technical field of drive assemblies, for example, to an oil-water hybrid cooling motor system and a vehicle.
背景技术Background technique
随着新能源汽车的快速发展，电驱***也向高速、高功率的方向发展，对电机冷却***的要求也越来越高。With the rapid development of new energy vehicles, the electric drive system is also developing in the direction of high speed and high power, and the requirements for the motor cooling system are also getting higher and higher.
相关技术中的水冷电机通过冷却壳体进而对定子铁芯冷却，而对于散热严重的定子绕组端部无法直接冷却，绕组的热量只能通过空气传导至壳体上进行冷却，冷却效果较差。相关技术中的油冷电机大部分只针对定子绕组端部进行冷却，而对于定子铁芯和转子磁钢则无法进行有效冷却，同时传统油冷电机还需要增加冷却器对油进行冷却，成本高，占用空间大。The water-cooled motor in the related art cools the stator core by cooling the casing, but the end of the stator winding with serious heat dissipation cannot be directly cooled, and the heat of the winding can only be conducted to the casing through the air for cooling, and the cooling effect is poor. Most of the oil-cooled motors in the related art only cool the ends of the stator windings, but cannot effectively cool the stator iron core and rotor magnets. At the same time, the traditional oil-cooled motors also need to add a cooler to cool the oil, which is costly. , takes up a lot of space.
发明内容SUMMARY OF THE INVENTION
本申请提供了一种油水混合冷却电机***及车辆，能够对定子铁芯、定子绕组及转子磁钢同时冷却，冷却效果好，且成本低，占用空间小。The present application provides an oil-water hybrid cooling motor system and a vehicle, which can simultaneously cool the stator iron core, the stator winding and the rotor magnetic steel, with good cooling effect, low cost and small occupied space.
一实施例提供了一种油水混合冷却电机***，包括：壳体；定子，插装于所述壳体的内侧，所述定子包括定子铁芯和端部绕组；转子，插装于所述定子的内侧，所述转子包括转子轴、嵌装于所述转子轴上的转子铁芯以及埋设于所述转子铁芯内部的多个磁钢，所述多个磁钢沿所述转子铁芯的径向并远离所述转子铁芯的中心分布；第一油道，开设于所述壳体上并延伸至所述壳体的内壁与所述定子铁芯的外壁之间；喷油件，设置于所述壳体的内侧，并位于所述定子铁芯的端部，所述喷油件上开设有与所述第一油道连通的喷油孔，所述喷油孔设置为将冷却油至少喷射至所述端部绕组；水道，开设于所述壳体上，所述水道与至少部分所述第一油道层叠交错设置；导油件，设置于所述转子轴上，并位于所述转子铁芯的端部；及第二油道，包括：进油流道，开设于所述转子 轴上；磁钢冷却流道，轴向贯穿地开设于所述转子铁芯与所述磁钢之间；开设于所述导油件上的导油流道和第一甩油流道，所述导油流道和第一甩油流道连通，所述导油流道设置为连通所述进油流道和所述磁钢冷却流道，所述第一甩油流道设置为将所述冷却油至少甩至所述端部绕组。An embodiment provides an oil-water hybrid cooling motor system, including: a casing; a stator inserted inside the casing, the stator including a stator core and end windings; and a rotor inserted into the stator The inner side of the rotor includes a rotor shaft, a rotor iron core embedded on the rotor shaft, and a plurality of magnetic steels embedded in the rotor iron core, and the plurality of magnetic steels along the rotor iron core radially and away from the center of the rotor core; a first oil passage, opened on the casing and extending between the inner wall of the casing and the outer wall of the stator core; an oil injection member, provided On the inner side of the casing and at the end of the stator iron core, the oil injection member is provided with an oil injection hole communicating with the first oil passage, and the oil injection hole is set for cooling oil At least spray to the end winding; a water channel is opened on the casing, and the water channel and at least a part of the first oil channel are stacked and staggered; an oil guide is arranged on the rotor shaft and is located at the the end of the rotor iron core; and the second oil passage, including: an oil inlet flow passage, which is opened on the rotor shaft; a magnetic steel cooling flow passage, which is axially opened in the rotor iron core and the magnetic steel. between the steels; the oil guiding flow channel and the first oil throwing flow channel opened on the oil guiding member, the oil guiding flow channel and the first oil throwing flow channel are communicated, and the oil guiding flow channel is set to communicate with all the The oil inlet flow channel and the magnetic steel cooling flow channel, and the first oil throwing flow channel is configured to throw the cooling oil at least to the end winding.
在一实施例中，所述第一油道沿所述壳体周向分布，所述壳体上开设有所述水道的区域面积占所述壳体的外周面积的三分之二。In one embodiment, the first oil passages are distributed along the circumference of the casing, and the area of the casing where the water passages are opened accounts for two-thirds of the outer peripheral area of the casing.
在一实施例中，所述第一油道包括：In one embodiment, the first oil passage includes:
周向进油流道，设置于所述壳体的轴向的中部；及多个径向进油流道，所述多个径向进油流道沿所述壳体的周向间隔设置，每个所述径向进油流道与所述周向进油流道连通，每个所述径向进油流道包括开设于所述壳体上的第一径向进油槽以及开设于所述定子铁芯的外壁上并与所述第一径向进油槽相对应的第二径向进油槽，所述水道与所述径向进油流道垂直。a circumferential oil inlet flow channel, arranged in the axial middle of the casing; and a plurality of radial oil inlet flow channels, the plurality of radial oil inlet flow channels are arranged at intervals along the circumferential direction of the casing, each The radial oil inlet flow channel is communicated with the circumferential oil inlet flow channel, and each radial oil inlet flow channel includes a first radial oil inlet groove opened on the casing and a first radial oil inlet channel opened on the stator iron core A second radial oil inlet groove on the outer wall of the radiator and corresponding to the first radial oil inlet groove, and the water channel is perpendicular to the radial oil inlet flow channel.
在一实施例中，所述导油件为动平衡板，所述动平衡板嵌装于所述壳体上，所述动平衡板位于所述转子铁芯的端部；或，In one embodiment, the oil guide is a dynamic balance plate, the dynamic balance plate is embedded on the casing, and the dynamic balance plate is located at the end of the rotor core; or,
所述导油件为转子压环，所述转子压环嵌装于所述壳体上，所述转子压环将所述转子铁芯轴向压紧于所述转子轴上；或，The oil guide is a rotor pressure ring, the rotor pressure ring is embedded on the casing, and the rotor pressure ring presses the rotor iron core axially on the rotor shaft; or,
所述导油件为所述转子轴上的轴肩，所述轴肩与所述转子铁芯轴向压紧。The oil guiding member is a shaft shoulder on the rotor shaft, and the shaft shoulder is axially compressed with the rotor iron core.
在一实施例中，所述喷油件为环状，两个所述喷油件分设于所述定子铁芯的两端。In one embodiment, the fuel injection member is annular, and the two fuel injection members are respectively disposed at both ends of the stator iron core.
在一实施例中，该油水混合冷却电机***还包括轴承，所述转子轴通过所述轴承耦合于所述壳体上，所述壳体上还开设有与所述进油流道连通的第二甩油流道，所述第二甩油流道设置为将所述冷却油至少喷射至所述轴承。In an embodiment, the oil-water hybrid cooling motor system further includes a bearing, the rotor shaft is coupled to the housing through the bearing, and a first port communicating with the oil inlet channel is further opened on the housing. Two oil throwing flow channels, the second oil throwing flow channel is configured to spray the cooling oil at least to the bearing.
在一实施例中，该油水混合冷却电机***还包括轴承，所述转子轴通过所述轴承耦合于所述壳体上，所述转子轴上设置有导流件，所述导流件上设置有导油斜面和导油槽中的至少一种结构，所述导油斜面和所述导油槽中的至少一种结构设置为将喷射至所述端部绕组上并部分滴落至所述导流件上的所述冷却油导流至所述轴承。In one embodiment, the oil-water hybrid cooling motor system further includes a bearing, the rotor shaft is coupled to the housing through the bearing, a flow guide is arranged on the rotor shaft, and a flow guide is arranged on the flow guide. There is at least one structure of an oil guide slope and an oil guide groove, and at least one of the oil guide slope and the oil guide groove is configured to be sprayed onto the end winding and partially drip onto the guide flow The cooling oil on the piece is directed to the bearing.
在一实施例中，所述导流件为嵌装于所述转子轴上的转子压环，所述转子压环设置为将所述转子铁芯轴向压紧于所述转子轴上。In one embodiment, the flow guide is a rotor pressure ring embedded on the rotor shaft, and the rotor pressure ring is configured to axially press the rotor iron core on the rotor shaft.
在一实施例中，所述转子轴为空心轴，所述***还包括嵌套于所述转子轴内的导管，所述导管的内腔即为所述进油流道，所述导管的外径小于所述转子 轴的内径；或，In one embodiment, the rotor shaft is a hollow shaft, and the system further includes a conduit nested in the rotor shaft, the inner cavity of the conduit is the oil inlet channel, and the outer portion of the conduit is the oil inlet channel. diameter less than the inner diameter of said rotor shaft; or,
所述转子轴为空心轴，所述转子轴的内腔即为所述进油流道，所述转子轴的内壁设置有引流槽，螺旋状的所述引流槽沿所述转子轴的轴向延伸。The rotor shaft is a hollow shaft, the inner cavity of the rotor shaft is the oil inlet channel, the inner wall of the rotor shaft is provided with a drainage groove, and the helical drainage groove is along the axial direction of the rotor shaft extend.
一实施例提供了一种车辆，包括如上所述的油水混合冷却电机***。An embodiment provides a vehicle including the oil-water hybrid cooling motor system as described above.
附图说明Description of drawings
图1为本申请一实施例提供的油水混合冷却电机***的截面图；1 is a cross-sectional view of an oil-water hybrid cooling motor system provided by an embodiment of the application;
图2为本申请一实施例提供的部分壳体上的第一油道的示意图；FIG. 2 is a schematic diagram of a first oil passage on a partial casing provided by an embodiment of the present application;
图3为本申请一实施例提供的部分壳体上的水道的示意图；3 is a schematic diagram of a water channel on a part of the casing provided by an embodiment of the present application;
图4为本申请一实施例提供的部分壳体上的水道和第一油道的示意图；4 is a schematic diagram of a water channel and a first oil channel on a part of the casing provided by an embodiment of the present application;
图5为本申请一实施例提供的定子铁芯的结构示意图；FIG. 5 is a schematic structural diagram of a stator core provided by an embodiment of the application;
图6为本申请一实施例提供的喷油件的结构示意图；6 is a schematic structural diagram of a fuel injection member provided by an embodiment of the application;
图7为本申请一实施例提供的转子铁芯的侧视图；FIG. 7 is a side view of a rotor core provided by an embodiment of the application;
图8为本申请一实施例提供的动平衡板的侧视图；8 is a side view of a dynamic balance plate provided by an embodiment of the present application;
图9为本申请一实施例的其它实施方式的转子轴的结构示意图一；FIG. 9 is a first structural schematic diagram of a rotor shaft according to another embodiment of an embodiment of the application;
图10为本申请一实施例的其它实施方式的转子轴的结构示意图二。FIG. 10 is a second structural schematic diagram of a rotor shaft according to another embodiment of an embodiment of the present application.
附图标记：Reference number:
1-壳体；2-定子；3-转子；4-喷油件；5-动平衡板；6-转子压环；7-轴承；8-导管；1-shell; 2-stator; 3-rotor; 4-fuel injection part; 5-dynamic balance plate; 6-rotor pressure ring; 7-bearing; 8-duct;
11-第一油道；12-水道；13-输油油道；131-进油口；14-进水口；15-排水口；11-first oil channel; 12-water channel; 13-oil oil channel; 131-oil inlet; 14-water inlet; 15-water outlet;
111-周向进油流道；112-径向进油流道；111-circumferential oil inlet channel; 112-radial oil inlet channel;
1121-第一径向进油槽；1121 - the first radial oil inlet groove;
121-第一流道；122-第二流道；123-中间流道；121-first flow channel; 122-second flow channel; 123-intermediate flow channel;
1211-第一分支；1212-第二分支；1221-第三分支；1222-第四分支；1211-first branch; 1212-second branch; 1221-third branch; 1222-fourth branch;
21-定子铁芯；22-端部绕组；21-stator core; 22-end winding;
211-第二径向进油槽；211-Second radial oil inlet groove;
31-转子轴；32-转子铁芯；33-磁钢；31-rotor shaft; 32-rotor core; 33-magnetic steel;
311-进油流道；312-进油孔；313-轴肩；314-引流槽；315-第二甩油流道；311 - oil inlet channel; 312 - oil inlet hole; 313 - shaft shoulder; 314 - drainage groove; 315 - second oil rejection channel;
321-磁钢冷却流道；322-磁钢加强冷却流道；321-Magnetic steel cooling runner; 322-Magnetic steel reinforced cooling runner;
41-喷油孔；42-喷油槽；41- fuel injection hole; 42- fuel injection groove;
51-导油流道；52-第一甩油流道；53-安装孔；51-oil guide flow channel; 52-first oil rejection flow channel; 53-installation hole;
511-径向槽；512-圆环形槽；511-radial groove; 512-circular groove;
61-导油斜面。61-Oil guide slope.
具体实施方式detailed description
在本申请的描述中，需要说明的是，术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请明的限制。此外，术语“第一”、“第二”、仅用于描述目的，而不能理解为指示或暗示相对重要性。其中，术语“第一位置”和“第二位置”为两个不同的位置。In the description of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation or a specific orientation. construction and operation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed to indicate or imply relative importance. Therein, the terms "first position" and "second position" are two different positions.
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本申请中的具体含义。In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood in specific situations.
如图1所示，本实施例提供一种油水混合冷却电机***，包括壳体1以及设置于壳体1内的定子2和转子3。定子2固定插装在壳体1的内腔中，转子3旋转插装在定子2的内环中。As shown in FIG. 1 , this embodiment provides an oil-water hybrid cooling motor system, including a housing 1 , a stator 2 and a rotor 3 disposed in the housing 1 . The stator 2 is fixedly inserted into the inner cavity of the housing 1 , and the rotor 3 is rotatably inserted into the inner ring of the stator 2 .
定子2包括定子铁芯21和端部绕组22。定子铁芯21为近似环状，端部绕组22卷绕在定子铁芯21内周面。转子3包括转子轴31、转子铁芯32和多个磁钢33。转子轴31通过轴承7可旋转地支撑在壳体1上。转子铁芯32嵌装于转子轴31上，并能随转子轴31一体地旋转。转子铁芯32的外周面与定子铁芯21的内周面之间隔开规定间隙，并相对设置。转子铁芯32由多个转子冲片沿轴向叠层构成。每个转子冲片呈圆盘形状。在转子铁芯32的内部形成有设置为埋设磁钢33的磁石孔。这些磁石孔沿转子铁芯32的径向并远离转子铁芯32中心分布，每个磁石孔沿转子铁芯32的轴向贯穿设置于转子铁芯32上。The stator 2 includes a stator core 21 and end windings 22 . The stator core 21 is substantially annular, and the end windings 22 are wound around the inner peripheral surface of the stator core 21 . The rotor 3 includes a rotor shaft 31 , a rotor iron core 32 and a plurality of magnetic steels 33 . The rotor shaft 31 is rotatably supported on the housing 1 through the bearing 7 . The rotor iron core 32 is fitted on the rotor shaft 31 and can rotate integrally with the rotor shaft 31 . The outer peripheral surface of the rotor iron core 32 and the inner peripheral surface of the stator iron core 21 are provided opposite to each other with a predetermined gap therebetween. The rotor core 32 is formed by stacking a plurality of rotor chips in the axial direction. Each rotor punch is in the shape of a disc. A magnet hole provided to embed the magnet steel 33 is formed inside the rotor core 32 . These magnet holes are distributed along the radial direction of the rotor iron core 32 and away from the center of the rotor iron core 32 , and each magnet hole is disposed through the rotor iron core 32 along the axial direction of the rotor iron core 32 .
壳体1上开设有对定子铁芯21和端部绕组22进行冷却的第一油道11和水道12。第一油道11延伸至壳体1的内壁与定子铁芯21的外壁之间。冷却油注入壳体 1内，并沿第一油道11流动至壳体1与定子铁芯21之间，以油冷定子铁芯21。喷油件4、壳体1和定子铁芯21三者形成端部绕组22淋油***。The casing 1 is provided with a first oil passage 11 and a water passage 12 for cooling the stator core 21 and the end windings 22 . The first oil passage 11 extends between the inner wall of the housing 1 and the outer wall of the stator core 21 . The cooling oil is injected into the casing 1 and flows along the first oil passage 11 between the casing 1 and the stator core 21 to cool the stator core 21 with oil. The fuel injector 4 , the housing 1 and the stator core 21 form an oil spray system for the end winding 22 .
壳体1的内侧还插装有喷油件4，喷油件4位于定子铁芯21的端部。喷油件4上开设有与第一油道11连通的喷油孔41。沿第一油道11流动至壳体1的内壁与定子铁芯21的外壁之间的冷却油，能在油压的作用下由喷油件4的喷油孔41至少喷射至端部绕组22，以同时油冷端部绕组22。The inner side of the casing 1 is also inserted with an oil injection member 4 , and the oil injection member 4 is located at the end of the stator iron core 21 . The fuel injection member 4 is provided with an injection hole 41 which communicates with the first oil passage 11 . The cooling oil flowing along the first oil passage 11 to between the inner wall of the casing 1 and the outer wall of the stator core 21 can be sprayed at least to the end winding 22 from the oil injection hole 41 of the oil injection member 4 under the action of oil pressure , to oil-cool the end windings 22 at the same time.
本实施例的壳体1上的水道12与至少部分第一油道11层叠交错设置。采用油水混合冷却，水冷的同时进行油冷，对定子铁芯21及端部绕组22进行有效冷却，避免冷却定子铁芯21后的冷却油的温度升高进而对端部绕组22冷却不足的情况，提高电机的冷却能力，同时，通过冷却水对冷却油进行冷却，无需额外设置冷却器，降低成本，减小整个电机***的占用空间。In this embodiment, the water channels 12 on the casing 1 and at least part of the first oil channels 11 are stacked and arranged in a staggered manner. Oil-water mixed cooling is adopted, and oil-cooling is carried out at the same time as water-cooling to effectively cool the stator core 21 and the end windings 22, so as to avoid the temperature of the cooling oil after cooling the stator core 21 rising and the cooling of the end windings 22 being insufficient. , improve the cooling capacity of the motor, and at the same time, the cooling oil is cooled by the cooling water, no additional cooler is required, the cost is reduced, and the occupied space of the entire motor system is reduced.
第一油道11沿壳体1周向分布，以对定子铁芯21进行均匀冷却。由于水道12和第一油道11的层叠会导致壳体1局部厚度的增加。在一实施例中，壳体1上开设有水道12的区域面积占壳体1的外周面积的三分之二，兼顾冷却效果和壳体1厚度及重量，保证定子铁芯21和端部绕组22的冷却效果的同时，避免壳体1过厚且重量较大。在其他实施例中，可根据电机功率等因素，调整设置第一油道11和水道12的区域面积的大小以及水道12与第一油道11的重叠面积。在一实施例中，设置有水道12的区域可包括多个区域，多个区域沿壳体1的周向间隔布置，以对整个壳体1上的冷却油进行均匀冷却。The first oil passages 11 are distributed along the circumferential direction of the casing 1 to uniformly cool the stator core 21 . The local thickness of the casing 1 is increased due to the lamination of the water channel 12 and the first oil channel 11 . In one embodiment, the area of the casing 1 where the water channel 12 is opened accounts for two-thirds of the outer peripheral area of the casing 1, taking into account the cooling effect and the thickness and weight of the casing 1 to ensure the stator core 21 and the end windings. At the same time, the cooling effect of 22 is avoided, and the shell 1 is too thick and heavy. In other embodiments, the size of the area where the first oil channel 11 and the water channel 12 are arranged and the overlapping area of the water channel 12 and the first oil channel 11 can be adjusted according to factors such as motor power. In one embodiment, the area where the water channel 12 is provided may include multiple areas, and the multiple areas are arranged at intervals along the circumferential direction of the casing 1 , so as to uniformly cool the cooling oil on the entire casing 1 .
本实施例中，参见图2，第一油道11包括周向进油流道111和多个径向进油流道112。在一实施例中，周向进油流道111设置于壳体1的轴向的中部。多个径向进油流道112沿壳体1的周向间隔设置，且每个径向进油流道112与周向进油流道111连通。冷却油由壳体1上的输油油道13的进油口131进入周向进油流道111，并沿周向进油流道111流动至壳体1的整个周向，周向进油流道111中的冷却油分流至每个径向进油流道112。每个径向进油流道112包括开设于壳体1上的第一径向进油槽1121以及开设于定子铁芯21的外壁上并与第一径向进油槽1121相对应的第二径向进油槽211(参见图5)。In this embodiment, referring to FIG. 2 , the first oil passage 11 includes a circumferential oil inlet flow passage 111 and a plurality of radial oil inlet flow passages 112 . In one embodiment, the circumferential oil inlet flow channel 111 is disposed in the axial middle portion of the housing 1 . A plurality of radial oil inlet flow passages 112 are arranged at intervals along the circumferential direction of the housing 1 , and each radial oil inlet flow passage 112 communicates with the circumferential oil inlet flow passage 111 . The cooling oil enters the circumferential oil inlet channel 111 from the oil inlet 131 of the oil channel 13 on the casing 1, and flows along the circumferential oil inlet channel 111 to the entire circumference of the casing 1. The cooling oil in the circumferential oil inlet channel 111 Oil is split to each radial oil inlet runner 112 . Each radial oil inlet channel 112 includes a first radial oil inlet groove 1121 formed on the housing 1 and a second radial oil inlet groove 1121 formed on the outer wall of the stator core 21 and corresponding to the first radial oil inlet groove 1121 . Oil inlet 211 (see Figure 5).
在一实施例中，参见图3和图4，水道12与径向进油流道112垂直，提高冷却水与冷却油的换热效率。水道12包括连通的第一流道121和第二流道122，第一流道121位于第二流道122的上游，且，第一流道121和第二流道122通过中间流道123连通。其中，第一流道121包括连通的第一分支1211和第二分支1212。第 一分支1211和第二分支1212沿壳体1的周向延伸，且第一分支1211和第二分支1212沿壳体1的轴向并排设置，第一分支1211和第二分支1212内的冷却水的流动方向相反，第一分支1211位于第二分支1212的上游。在一实施例中，第二流道122包括连通的第三分支1221和第四分支1222。第三分支1221和第四分支1222沿壳体1的周向延伸，且沿壳体1的轴向并排设置，第三分支1221和第四分支1222的内的冷却水流动方向相反，且第三分支1221位于第四分支1222的上游。In one embodiment, referring to FIG. 3 and FIG. 4 , the water channel 12 is perpendicular to the radial oil inlet flow channel 112 to improve the heat exchange efficiency between the cooling water and the cooling oil. The water channel 12 includes a first flow channel 121 and a second flow channel 122 that communicate with each other. The first flow channel 121 is located upstream of the second flow channel 122 , and the first flow channel 121 and the second flow channel 122 are communicated through an intermediate flow channel 123 . Wherein, the first flow channel 121 includes a first branch 1211 and a second branch 1212 that are communicated. The first branch 1211 and the second branch 1212 extend along the circumferential direction of the casing 1, and the first branch 1211 and the second branch 1212 are arranged side by side along the axial direction of the casing 1. The cooling in the first branch 1211 and the second branch 1212 The water flows in the opposite direction, and the first branch 1211 is located upstream of the second branch 1212 . In one embodiment, the second flow channel 122 includes a third branch 1221 and a fourth branch 1222 that communicate with each other. The third branch 1221 and the fourth branch 1222 extend along the circumferential direction of the casing 1 and are arranged side by side along the axial direction of the casing 1 . The cooling water in the third branch 1221 and the fourth branch 1222 flow in opposite directions, and the third branch 1221 and the fourth branch 1222 flow in opposite directions. The branch 1221 is located upstream of the fourth branch 1222 .
储水装置(图未示)中的冷却水经泵送由第一分支1211上的进水口14流入第一分支1211，经第一分支1211流入第二分支1212，之后经中间流道123流入第三分支1221，再由第三分支1221流入第四分支1222，最后经第四分支1222上的排水口15流回至储水装置。储水装置中的冷却水经降温后，再次流入水道12，如此循环，以不断对第一油道11中的冷却油进行冷却。The cooling water in the water storage device (not shown) is pumped from the water inlet 14 on the first branch 1211 into the first branch 1211, then flows into the second branch 1212 through the first branch 1211, and then flows into the second branch 1212 through the intermediate flow channel 123. The third branch 1221 flows into the fourth branch 1222 from the third branch 1221 , and finally flows back to the water storage device through the drain port 15 on the fourth branch 1222 . After cooling, the cooling water in the water storage device flows into the water channel 12 again, and circulates in this way to continuously cool the cooling oil in the first oil channel 11 .
在其他实施例中，可根据电机功率及工作状态等因素，调整第一油道11和水道12的设置形状及第一油道11和水道12的重叠面积，以调节冷却水和冷却油的换热效率，在此不做限定。例如，可将第一油道11和水道12中的至少一个设置为沿壳体1的周向螺旋延伸的形状。In other embodiments, the shape of the first oil passage 11 and the water passage 12 and the overlapping area of the first oil passage 11 and the water passage 12 can be adjusted according to factors such as motor power and working state, so as to adjust the exchange of cooling water and cooling oil. Thermal efficiency is not limited here. For example, at least one of the first oil passage 11 and the water passage 12 may be provided in a shape spirally extending in the circumferential direction of the casing 1 .
本实施例的水道12设置于第一油道11远离转子铁芯32的一侧，冷却水对冷却油进行冷却，冷却油对转子铁芯32和端部绕组22冷却。在其他实施例中，水道12也可设置于第一油道11靠近转子铁芯32的一侧，或者，在第一油道11的内外两侧分别设置水道12。The water channel 12 in this embodiment is disposed on the side of the first oil channel 11 away from the rotor iron core 32 , the cooling water cools the cooling oil, and the cooling oil cools the rotor iron core 32 and the end windings 22 . In other embodiments, the water channel 12 may also be provided on the side of the first oil channel 11 close to the rotor core 32 , or the water channel 12 may be provided on the inner and outer sides of the first oil channel 11 respectively.
在一实施例中，为清楚表示水道12和第一油道11的结构，图2-图4中将设置有第一油道11和水道12的壳体1采用分体式结构，在其他实施例中，整个壳体1可为一体式结构。例如，第一油道11和水道12可随壳体1一体铸造成型。In one embodiment, in order to clearly show the structures of the water channel 12 and the first oil channel 11 , the casing 1 provided with the first oil channel 11 and the water channel 12 adopts a split structure in FIGS. 2-4 . In other embodiments , the entire housing 1 can be a one-piece structure. For example, the first oil passage 11 and the water passage 12 may be integrally cast with the casing 1 .
在一实施例中，参见图6，上述的喷油件4为环状，喷油件4插装于壳体1的内侧。两个喷油件4分设于定子铁芯21的两端，喷油件4的轴向与定子铁芯21及壳体1的轴向垂直。喷油件4上开设有喷油槽42，喷油槽42与位于壳体1的内壁和定子铁芯21的外壁之间的第一油道11连通。喷油件4的端面与定子铁芯21的端面密封贴合。喷油件4、壳体1和定子铁芯21三者形成密封的喷油腔，喷油件4上的喷油孔41与喷油腔连通，第一流道121的冷却油由喷油孔41喷射至端部绕组22。In an embodiment, referring to FIG. 6 , the above-mentioned fuel injection member 4 is annular, and the fuel injection member 4 is inserted into the inner side of the housing 1 . The two fuel injection members 4 are respectively disposed at both ends of the stator core 21 , and the axial direction of the fuel injection members 4 is perpendicular to the axial direction of the stator core 21 and the casing 1 . The oil injection member 4 is provided with an oil injection groove 42 , and the oil injection groove 42 communicates with the first oil passage 11 located between the inner wall of the housing 1 and the outer wall of the stator core 21 . The end face of the fuel injection member 4 is in sealing contact with the end face of the stator iron core 21 . The fuel injection member 4, the casing 1 and the stator iron core 21 form a sealed fuel injection cavity. The fuel injection hole 41 on the fuel injection member 4 communicates with the fuel injection cavity. Spray to the end windings 22 .
本实施例中，喷油槽42沿环状的喷油件4的周向延伸，喷油槽42的延伸长度约为喷油件4的周向的三分之二。在其他实施例中，也可设置喷油槽42沿环状的喷油件4的整个周向延伸，以使得喷油槽42与每个径向进油流道112都连通。在 一实施例中，多个喷油孔41沿喷油件4的周向间隔设置，以保证对端部绕组22每处均匀喷射冷却油。在一实施例中，多个喷油孔41沿喷油件4的延伸方向间隔设置，以形成一排喷油孔41。可沿喷油件4的轴向设置多排喷油孔41，多排喷油孔41还可沿喷油件3的延伸方向错位设置，以提高冷却油喷射的均匀性。另外，喷油孔41的形状可设置为圆柱状或圆锥状等，在此不做限定。In this embodiment, the fuel injection groove 42 extends along the circumferential direction of the annular fuel injection member 4 , and the extension length of the fuel injection groove 42 is approximately two-thirds of the circumferential direction of the fuel injection member 4 . In other embodiments, the oil injection groove 42 can also be arranged to extend along the entire circumference of the annular oil injection member 4 , so that the oil injection groove 42 communicates with each of the radial oil inlet flow passages 112 . In one embodiment, a plurality of oil injection holes 41 are arranged at intervals along the circumferential direction of the oil injection member 4 to ensure that the cooling oil is uniformly sprayed to each part of the end winding 22 . In one embodiment, a plurality of fuel injection holes 41 are arranged at intervals along the extending direction of the fuel injection member 4 to form a row of fuel injection holes 41 . Multiple rows of oil injection holes 41 can be provided along the axial direction of the fuel injection member 4 , and the multiple rows of oil injection holes 41 can also be arranged in dislocation along the extending direction of the fuel injection member 3 to improve the uniformity of cooling oil injection. In addition, the shape of the fuel injection hole 41 may be set in a cylindrical shape, a conical shape, or the like, which is not limited herein.
在一实施例中，参见图1和图8，转子3上开设有对磁钢33及端部绕组22进行冷却的第二油道。第二油道包括进油流道311、磁钢冷却流道321、导油流道51和第一甩油流道52。In one embodiment, referring to FIGS. 1 and 8 , the rotor 3 is provided with a second oil passage for cooling the magnetic steel 33 and the end windings 22 . The second oil channel includes an oil inlet channel 311 , a magnetic steel cooling channel 321 , an oil guide channel 51 and a first oil throwing channel 52 .
在一实施例中，参见图1，进油流道311开设于转子轴31上。在一实施例中，转子轴31为空心轴，转子轴31的内腔即为进油流道311。同时，转子轴31上开设有贯穿转子轴31的厚度方向的进油孔312。进油孔312为进油流道311的一部分。In one embodiment, referring to FIG. 1 , the oil inlet channel 311 is formed on the rotor shaft 31 . In one embodiment, the rotor shaft 31 is a hollow shaft, and the inner cavity of the rotor shaft 31 is the oil inlet channel 311 . Meanwhile, the rotor shaft 31 is provided with an oil inlet hole 312 penetrating the thickness direction of the rotor shaft 31 . The oil inlet hole 312 is a part of the oil inlet channel 311 .
继续参见图1，转子轴31上还设置有导油件，且导油件位于转子铁芯32的轴向的端部。导油流道51和与导油流道51连通的第一甩油流道52开设于导油件上。导油件上的导油流道51与进油孔312远离转子轴31中心的一端连通。在一实施例中，导油件设置有两个，两个导油件分设于转子铁芯32的轴向的两端。相应地，进油孔312也设置有两个，分别与两个导油件上的导油流道51连通。在一实施例中，导油流道51为开设于导油件上的导油凹槽。第一甩油流道52与导油流道51连通，并贯穿导油件。Continuing to refer to FIG. 1 , the rotor shaft 31 is further provided with an oil guide member, and the oil guide member is located at the axial end of the rotor core 32 . The oil guiding flow channel 51 and the first oil throwing flow channel 52 communicating with the oil guiding flow channel 51 are opened on the oil guiding member. The oil guiding channel 51 on the oil guiding member communicates with the end of the oil inlet hole 312 away from the center of the rotor shaft 31 . In one embodiment, there are two oil guide members, and the two oil guide members are respectively disposed at both ends of the rotor iron core 32 in the axial direction. Correspondingly, there are also two oil inlet holes 312 , which are respectively communicated with the oil guide channels 51 on the two oil guide members. In one embodiment, the oil guide channel 51 is an oil guide groove formed on the oil guide member. The first oil throwing channel 52 communicates with the oil guiding channel 51 and penetrates through the oil guiding member.
参见图1和图7，磁钢冷却流道321开设于转子铁芯32上，并位于转子铁芯32与磁钢33的连接处，即部分磁钢33的表面暴露于磁钢冷却流道321。磁钢冷却流道321轴向贯穿开设于转子铁芯32上。导油流道51将进油流道311和磁钢冷却流道321连通。Referring to FIGS. 1 and 7 , the magnetic steel cooling flow channel 321 is opened on the rotor iron core 32 and is located at the connection between the rotor iron core 32 and the magnetic steel 33 , that is, part of the surface of the magnetic steel 33 is exposed to the magnetic steel cooling flow channel 321 . The magnetic steel cooling flow channel 321 axially extends through the rotor core 32 . The oil guide channel 51 communicates the oil inlet channel 311 with the magnetic steel cooling channel 321 .
储油装置中的冷却油经泵送至进油流道311，并经进油流道311的进油孔312进入导油件的导油流道51。导油流道51内的部分冷却油进入磁钢冷却流道321，以油冷磁钢33。导油流道51内的另一部分冷却油在转子3的旋转离心力的作用下，倾斜于转子铁芯32的径向甩出，并到达定子2的端部绕组22，以油冷端部绕组22。The cooling oil in the oil storage device is pumped to the oil inlet channel 311 , and enters the oil guide channel 51 of the oil guide member through the oil inlet hole 312 of the oil inlet channel 311 . Part of the cooling oil in the oil guide channel 51 enters the magnetic steel cooling channel 321 to cool the magnetic steel 33 with oil. Another part of the cooling oil in the oil guide channel 51 is thrown out obliquely in the radial direction of the rotor core 32 under the action of the rotational centrifugal force of the rotor 3 , and reaches the end winding 22 of the stator 2 to cool the end winding 22 with oil. .
本实施例中，参见图7，在转子铁芯32上还设置有磁钢加强冷却流道322，以进一步油冷磁钢33。该磁钢加强冷却流道322轴向贯穿转子铁芯32，并靠近磁钢33设置。磁钢加强冷却流道322中的冷却油对磁钢33进行冷却。In this embodiment, referring to FIG. 7 , the rotor iron core 32 is further provided with a magnetic steel reinforced cooling channel 322 to further oil-cool the magnetic steel 33 . The magnetic steel reinforced cooling channel 322 axially penetrates the rotor core 32 and is disposed close to the magnetic steel 33 . The cooling oil in the magnetic steel reinforced cooling channel 322 cools the magnetic steel 33 .
在一实施例中，导油流道51呈圆环状设置于导油件上，以使导油流道51连通所有的磁钢冷却流道321及磁钢加强冷却流道322。In one embodiment, the oil guide flow channel 51 is disposed on the oil guide member in an annular shape, so that the oil guide flow channel 51 communicates with all the magnetic steel cooling flow channels 321 and the magnetic steel reinforcement cooling flow channels 322 .
在一实施例中，第一甩油流道52与转子铁芯32的轴线之间呈非零夹角，随着到转子铁芯32的端部的距离的增加，第一甩油流道52距转子铁芯32的轴线的距离越大，以引导冷却油甩至定子2的端部绕组22。在其他实施例中，第一甩油流道52还可为其他形状，在此不做限定。第一甩油流道52的数量也不做限定。In one embodiment, a non-zero included angle is formed between the first oil slinger flow channel 52 and the axis of the rotor iron core 32 . The greater the distance from the axis of the rotor core 32 , is to guide the cooling oil to be thrown to the end windings 22 of the stator 2 . In other embodiments, the first oil throwing channel 52 may also have other shapes, which are not limited herein. The number of the first oil throwing channels 52 is also not limited.
本实施例中，参见图1和图8，导油件为动平衡板5。动平衡板5上开设有安装孔53，动平衡板5通过安装孔53嵌装于壳体1上，并位于转子铁芯32的端部，设置为对转子3进行动平衡调节。将动平衡板5直接作为导油件，无需额外增加新结构，降低整个电机***的质量及占用空间。在一实施例中，动平衡板5设置有两个，两个动平衡板5分设于转子铁芯32的轴向的两端。导油流道51包括开设于动平衡板5上的多个径向槽511和圆环形槽512。径向槽511的一端与安装孔53连通，转子轴31的进油孔312中的冷却油沿径向槽511流入圆环形槽512中。In this embodiment, referring to FIG. 1 and FIG. 8 , the oil guide member is a dynamic balance plate 5 . The dynamic balance plate 5 is provided with a mounting hole 53 , the dynamic balance plate 5 is embedded in the housing 1 through the mounting hole 53 , and is located at the end of the rotor core 32 , and is configured to adjust the dynamic balance of the rotor 3 . The dynamic balance plate 5 is directly used as an oil guide, without adding a new structure, which reduces the quality and occupied space of the entire motor system. In an embodiment, two dynamic balance plates 5 are provided, and the two dynamic balance plates 5 are respectively provided at both ends of the rotor core 32 in the axial direction. The oil guide channel 51 includes a plurality of radial grooves 511 and annular grooves 512 formed on the dynamic balance plate 5 . One end of the radial groove 511 is communicated with the mounting hole 53 , and the cooling oil in the oil inlet hole 312 of the rotor shaft 31 flows into the annular groove 512 along the radial groove 511 .
在一实施例中，转子轴31上嵌装有转子压环6，转子压环6将转子铁芯32和两个动平衡板5轴向压紧于转子轴31的轴肩313上。在其他实施例中，也可不设置动平衡板5，而使转子压环6与转子铁芯32贴合，此时可将转子压环6作为导油件。或者，取消位于转子轴31的后端的动平衡板5，转子压环6将转子铁芯32和位于转子轴31的前端的动平衡板5轴向压紧于转子轴31上，此时，可将转子压环6和动平衡板5中的至少一个作为导油件。In one embodiment, a rotor pressure ring 6 is embedded on the rotor shaft 31 , and the rotor pressure ring 6 presses the rotor iron core 32 and the two dynamic balance plates 5 axially on the shoulder 313 of the rotor shaft 31 . In other embodiments, the dynamic balance plate 5 may not be provided, but the rotor pressing ring 6 may be fitted with the rotor iron core 32 , and in this case, the rotor pressing ring 6 may be used as an oil guide. Alternatively, the dynamic balance plate 5 at the rear end of the rotor shaft 31 is cancelled, and the rotor pressing ring 6 presses the rotor iron core 32 and the dynamic balance plate 5 at the front end of the rotor shaft 31 axially on the rotor shaft 31. At least one of the rotor pressure ring 6 and the dynamic balance plate 5 is used as an oil guide.
另外，本实施例的转子轴31上设置有定位动平衡板5的轴肩313。在其他实施例中，也可不设置动平衡板5，轴肩313与转子铁芯32轴向压紧，直接将轴肩313作为导油件。In addition, the rotor shaft 31 of this embodiment is provided with a shoulder 313 for positioning the dynamic balance plate 5 . In other embodiments, the dynamic balance plate 5 may not be provided, the shaft shoulder 313 and the rotor iron core 32 are pressed axially, and the shaft shoulder 313 is directly used as an oil guide.
在其他实施例中，导油件还可为设置在转子轴31上的其他结构，在此不做限定。In other embodiments, the oil guide member may also be other structures disposed on the rotor shaft 31, which is not limited herein.
在一实施例中，转子轴31上还开设有与进油流道311连通的第二甩油流道315，冷却油能由第二甩油流道315至少喷射至轴承7，以油冷及润滑轴承7。本实施例中，第二甩油流道315与转子轴31的内腔连通，并贯穿转子轴31的壁厚。第二甩油流道315设置于靠近轴承7的转子轴31的后端。第二甩油流道315与转子轴31的轴线呈非零夹角，以引导冷却油尽可能多地甩至轴承7。第二甩油流道315的数量和形状不做限定。In one embodiment, the rotor shaft 31 is also provided with a second oil throwing flow channel 315 that communicates with the oil inlet flow channel 311, and the cooling oil can be sprayed at least to the bearing 7 from the second oil throwing flow channel 315, so as to cool the oil and cool it down. Lubricate bearing 7. In this embodiment, the second oil throwing channel 315 communicates with the inner cavity of the rotor shaft 31 and penetrates the wall thickness of the rotor shaft 31 . The second oil throwing channel 315 is disposed at the rear end of the rotor shaft 31 close to the bearing 7 . The second oil throwing channel 315 forms a non-zero included angle with the axis of the rotor shaft 31 to guide the cooling oil to be thrown to the bearing 7 as much as possible. The number and shape of the second oil throwing channels 315 are not limited.
在一实施例中，参见图1，转子轴31上设置有导流件，导流件上设置有导油斜面61和导油槽等中的至少一种导流结构。由喷油件4的喷油孔41喷射至端部绕组22上的冷却油以及由动平衡板5上的第一甩油流道52甩至端部绕组22上的冷 却油，部分滴落至导流件上，并经导油斜面61或导油槽中的至少一个导流至轴承7，以进一步油冷和润滑轴承7。In one embodiment, referring to FIG. 1 , the rotor shaft 31 is provided with a flow guide member, and the flow guide member is provided with at least one flow guide structure of an oil guide slope 61 and an oil guide groove. The cooling oil sprayed onto the end winding 22 by the oil injection hole 41 of the fuel injection member 4 and the cooling oil thrown onto the end winding 22 by the first oil throwing channel 52 on the dynamic balance plate 5 partially drop to the end winding 22 . On the guide member, and guide the oil to the bearing 7 through at least one of the oil guide slope 61 or the oil guide groove, so as to further oil-cool and lubricate the bearing 7 .
本实施例中，导流件为转子压环6，转子压环6上设置有导油斜面61。在其他实施例中，转子压环6上还可设置导油槽等导油结构。导流件还可为动平衡板5或其他结构，在此不做限定。In this embodiment, the flow guide member is the rotor pressure ring 6 , and the rotor pressure ring 6 is provided with an oil guide slope 61 . In other embodiments, oil guiding structures such as oil guiding grooves may also be provided on the rotor pressure ring 6 . The deflector may also be a dynamic balance plate 5 or other structures, which are not limited herein.
在一实施例中，为使转子轴31尽可能地轻量化，会将转子轴31的内腔设置的较大。此时，采用机械泵将储油装置中的冷却油泵送至转子轴31的内腔时，会导致低速时进油量不足，无法填充转子轴31的内腔，导致第二甩油流道315甩至轴承7的冷却油不足，影响轴承7的冷却及润滑。为此，参见图9，在其他实施例中，可在转子轴31内嵌套导管8，导管8的内腔即为进油流道311，导管8的外径小于转子轴31的内径，以保证冷却油能有效地填充导管8的内腔，进而提高对轴承7的冷却效果。导管8上开设有通孔，以使导管8的内腔与导油件的导油流道51连通。或者，参见图10，也可在转子轴31的内壁设置引流槽314，引流槽314呈螺旋状，螺旋状的引流槽314沿转子轴31的轴向延伸，以将转子轴31的前端的冷却油引导至转子轴31的后端，提高冷却油的填充能力。在其他实施例中，引流槽314也可为其他形状，在此不做限定。In one embodiment, in order to reduce the weight of the rotor shaft 31 as much as possible, the inner cavity of the rotor shaft 31 is set larger. At this time, when a mechanical pump is used to pump the cooling oil in the oil storage device to the inner cavity of the rotor shaft 31 , the oil intake at low speed will be insufficient, and the inner cavity of the rotor shaft 31 cannot be filled, resulting in the second oil throwing channel 315 . The cooling oil thrown to the bearing 7 is insufficient, which affects the cooling and lubrication of the bearing 7. To this end, referring to FIG. 9 , in other embodiments, a conduit 8 can be nested in the rotor shaft 31 , the inner cavity of the conduit 8 is the oil inlet channel 311 , and the outer diameter of the conduit 8 is smaller than the inner diameter of the rotor shaft 31 , so as to It is ensured that the cooling oil can effectively fill the inner cavity of the conduit 8 , thereby improving the cooling effect on the bearing 7 . The conduit 8 is provided with a through hole, so that the inner cavity of the conduit 8 is communicated with the oil guiding channel 51 of the oil guiding member. Alternatively, referring to FIG. 10 , a drainage groove 314 may also be provided on the inner wall of the rotor shaft 31 , the drainage groove 314 is helical, and the helical drainage groove 314 extends along the axial direction of the rotor shaft 31 to cool the front end of the rotor shaft 31 . The oil is guided to the rear end of the rotor shaft 31, and the filling capacity of the cooling oil is improved. In other embodiments, the drainage groove 314 may also have other shapes, which are not limited herein.
本实施例提供的油水混合冷却电机***中，壳体1上开设对定子铁芯21和端部绕组22进行冷却的第一油道11和水道12。壳体1和定子铁芯21上的第一油道11内的冷却油对定子铁芯21进行冷却。喷油件4、壳体1和定子铁芯21三者形成端部绕组22淋油***，以对端部绕组22进行冷却。壳体1上的水道12与至少部分第一油道11层叠交错设置，采用油水混合冷却，水冷的同时进行油冷，从而对定子铁芯21及端部绕组22进行有效冷却，避免冷却定子铁芯21后的冷却油的温度升高进而对端部绕组22冷却不足，同时，通过冷却水对冷却油进行冷却，无需额外设置冷却器，降低成本，减小整个电机***的占用空间。转子3上设置有第二油道，其中，转子轴31的进油流道311内的冷却油，在导油件的导油流道51的导引下，进入转子铁芯32上的磁钢冷却流道321中，以对磁钢33进行冷却，同时部分冷却油经导油件的第一甩油流道52甩至端部绕组22，以进一步对端部绕组22冷却。另外，壳体1上还设置有与进油流道311连通的第二甩油流道315，进油流道311中的冷却油经第二甩油流道315喷射至轴承7，以冷却和润滑轴承7。本实施例的油水混合冷却电机***，能同时对定子铁芯21、端部绕组22、磁钢33以及轴承7进行冷却，并通过水冷加油冷的方式对定子铁芯21和端部绕组22进行 冷却，冷却效果好，同时无需额外设置冷却器，降低成本，减小整个电机***的占用空间。In the oil-water hybrid cooling motor system provided in this embodiment, the casing 1 is provided with a first oil passage 11 and a water passage 12 for cooling the stator iron core 21 and the end windings 22 . The cooling oil in the first oil passage 11 on the casing 1 and the stator core 21 cools the stator core 21 . The fuel injection member 4 , the casing 1 and the stator core 21 form an oil spray system for the end winding 22 to cool the end winding 22 . The water channel 12 on the housing 1 and at least part of the first oil channel 11 are stacked and alternately arranged, and oil-water mixed cooling is adopted, and oil cooling is performed at the same time as water cooling, so as to effectively cool the stator iron core 21 and the end windings 22 and avoid cooling the stator iron. The temperature of the cooling oil behind the core 21 rises and the end windings 22 are insufficiently cooled. At the same time, the cooling oil is cooled by the cooling water, which eliminates the need for additional coolers, reduces costs, and reduces the space occupied by the entire motor system. The rotor 3 is provided with a second oil passage, wherein the cooling oil in the oil inlet passage 311 of the rotor shaft 31 enters the magnetic steel on the rotor iron core 32 under the guidance of the oil guiding passage 51 of the oil guiding member In the cooling channel 321 , the magnetic steel 33 is cooled, and at the same time, part of the cooling oil is thrown to the end winding 22 through the first oil throwing channel 52 of the oil guide to further cool the end winding 22 . In addition, the housing 1 is also provided with a second oil slinger runner 315 that communicates with the oil inlet runner 311 , and the cooling oil in the oil inlet runner 311 is sprayed to the bearing 7 through the second oil slinger runner 315 to cool and cool the oil. Lubricate bearing 7. The oil-water hybrid cooling motor system of this embodiment can simultaneously cool the stator iron core 21 , the end windings 22 , the magnetic steel 33 and the bearing 7 , and the stator iron core 21 and the end windings 22 are cooled by water cooling Cooling, the cooling effect is good, and at the same time, there is no need to set up an additional cooler, which reduces the cost and reduces the occupied space of the entire motor system.
本实施例还提供一种车辆，包括上述的油水混合冷却电机***，冷却效果好，电机***的持续功率高。This embodiment also provides a vehicle, including the above-mentioned oil-water hybrid cooling motor system, which has good cooling effect and high continuous power of the motor system.

Claims (10)

  1. 一种油水混合冷却电机***，包括：An oil-water hybrid cooling motor system, comprising:
    壳体(1)；housing (1);
    定子(2)，插装于所述壳体(1)的内侧，所述定子(2)包括定子铁芯(21)和端部绕组(22)；The stator (2) is inserted into the inner side of the casing (1), and the stator (2) includes a stator iron core (21) and an end winding (22);
    转子(3)，插装于所述定子(2)的内侧，所述转子(3)包括转子轴(31)、嵌装于所述转子轴(31)上的转子铁芯(32)以及多个磁钢(33)，所述多个磁钢(33)埋设于所述转子铁芯(32)内部的多个部位并沿所述铁芯(32)的轴向延伸；A rotor (3) is inserted into the inner side of the stator (2), and the rotor (3) includes a rotor shaft (31), a rotor iron core (32) embedded on the rotor shaft (31), and a plurality of rotors (32). a plurality of magnetic steels (33), the plurality of magnetic steels (33) are embedded in multiple positions inside the rotor iron core (32) and extend along the axial direction of the iron core (32);
    第一油道(11)，开设于所述壳体(1)上并延伸至所述壳体(1)的内壁与所述定子铁芯(21)的外壁之间；a first oil passage (11), opened on the casing (1) and extending between the inner wall of the casing (1) and the outer wall of the stator core (21);
    喷油件(4)，设置于所述壳体(1)的内侧，并位于所述定子铁芯(21)的端部，所述喷油件(4)上开设有与所述第一油道(11)连通的喷油孔(41)，所述喷油孔(41)设置为将冷却油至少喷射至所述端部绕组(22)；An oil injection member (4) is arranged on the inner side of the casing (1) and is located at the end of the stator iron core (21), and the oil injection member (4) is provided with a connection with the first oil an oil injection hole (41) communicated with the passage (11), the oil injection hole (41) is arranged to inject cooling oil at least to the end winding (22);
    水道(12)，开设于所述壳体(1)上，所述水道(12)与至少部分所述第一油道(11)层叠交错设置；a water channel (12), opened on the casing (1), the water channel (12) and at least a part of the first oil channel (11) being stacked and staggered;
    导油件，设置于所述转子轴(31)上，并位于所述转子铁芯(32)的端部；及an oil guide, which is arranged on the rotor shaft (31) and is located at the end of the rotor iron core (32); and
    第二油道，包括：The second oil passage, including:
    进油流道(311)，开设于所述转子轴(31)上；an oil inlet channel (311), opened on the rotor shaft (31);
    磁钢冷却流道(321)，轴向贯穿地开设于所述转子铁芯(32)与所述磁钢(33)之间；及a magnetic steel cooling channel (321), which is axially provided between the rotor core (32) and the magnetic steel (33); and
    开设于所述导油件上的导油流道(51)和第一甩油流道(52)，所述导油流道(51)和第一甩油流道(52)连通，所述导油流道(51)设置为连通所述进油流道(311)和所述磁钢冷却流道(321)，所述第一甩油流道(52)设置为将所述冷却油至少甩至所述端部绕组(22)。An oil guide flow channel (51) and a first oil throwing flow channel (52) opened on the oil guide member, the oil guide flow channel (51) and the first oil throwing flow channel (52) communicate with each other, the The oil guide flow channel (51) is arranged to communicate with the oil inlet flow channel (311) and the magnetic steel cooling flow channel (321), and the first oil rejection flow channel (52) is arranged to connect the cooling oil at least to the end windings (22).
  2. 根据权利要求1所述的油水混合冷却电机***，其中，所述第一油道(11)沿所述壳体(1)周向分布，所述壳体(1)上开设有所述水道(12)的区域面积占所述壳体(1)的外周面积的三分之二。The oil-water hybrid cooling motor system according to claim 1, wherein the first oil passages (11) are distributed along the circumference of the casing (1), and the casing (1) is provided with the water passages (11). The area of 12) occupies two thirds of the outer peripheral area of the casing (1).
  3. 根据权利要求1或2所述的油水混合冷却电机***，其中，所述第一油道(11)包括：The oil-water hybrid cooling motor system according to claim 1 or 2, wherein the first oil passage (11) comprises:
    周向进油流道(111)，设置于所述壳体(1)的轴向的中部；及a circumferential oil inlet flow channel (111), arranged in the axial middle of the casing (1); and
    多个径向进油流道(112)，所述多个径向进油流道(112)沿所述壳体(1)的周向间隔设置，每个所述径向进油流道(112)与所述周向进油流道(111)连通，每个所述径向进油流道(112)包括开设于所述壳体(1)上的第一径向进油槽(1121)以及开设于所述定子铁芯(21)的外壁上并与所述第一径向进油槽(1121)相对应的第二径向进油槽(211)，所述水道(12)与所述径向进油流道(112)垂直。A plurality of radial oil inlet flow passages (112), the plurality of radial oil inlet flow passages (112) are arranged at intervals along the circumferential direction of the casing (1), each of the radial oil inlet flow passages ( 112) is communicated with the circumferential oil inlet flow channel (111), and each radial oil inlet flow channel (112) includes a first radial oil inlet groove (1121) opened on the housing (1) and a A second radial oil inlet groove (211) on the outer wall of the stator core (21) and corresponding to the first radial oil inlet groove (1121), the water channel (12) is connected to the radial inlet groove (1121). The oil flow channel (112) is vertical.
  4. 根据权利要求1所述的油水混合冷却电机***，其中，The oil-water hybrid cooling motor system according to claim 1, wherein,
    所述导油件为动平衡板(5)，所述动平衡板(5)嵌装于所述壳体(1)上，所述动平衡板(5)位于所述转子铁芯(32)的端部；或，The oil guiding member is a dynamic balance plate (5), the dynamic balance plate (5) is embedded on the casing (1), and the dynamic balance plate (5) is located on the rotor iron core (32) the end of ; or,
    所述导油件为转子压环(6)，所述转子压环(6)嵌装于所述壳体(1)上，所述转子压环(6)将所述转子铁芯(32)轴向压紧于所述转子轴(31)上；或，The oil guiding member is a rotor pressure ring (6), the rotor pressure ring (6) is embedded on the casing (1), and the rotor pressure ring (6) connects the rotor iron core (32) Axially compressed on the rotor shaft (31); or,
    所述导油件为所述转子轴(31)上的轴肩(313)，所述轴肩(313)与所述转子铁芯(32)轴向压紧。The oil guide member is a shaft shoulder (313) on the rotor shaft (31), and the shaft shoulder (313) is axially compressed with the rotor iron core (32).
  5. 根据权利要求1所述的油水混合冷却电机***，其中，所述喷油件(4)为环状，两个所述喷油件(4)分设于所述定子铁芯(21)的两端。The oil-water hybrid cooling motor system according to claim 1, wherein the fuel injection member (4) is annular, and the two fuel injection members (4) are respectively disposed at both ends of the stator iron core (21). .
  6. 根据权利要求1所述的油水混合冷却电机***，还包括轴承(7)，所述转子轴(31)通过所述轴承(7)耦合于所述壳体(1)上，所述壳体(1)上还开设有与所述进油流道(311)连通的第二甩油流道(315)，所述第二甩油流道(315)设置为将所述冷却油至少喷射至所述轴承(7)。The oil-water hybrid cooling motor system according to claim 1, further comprising a bearing (7), the rotor shaft (31) is coupled to the casing (1) through the bearing (7), and the casing ( 1) There is also a second oil throwing flow passage (315) in communication with the oil inlet flow passage (311), and the second oil throwing flow passage (315) is set to spray the cooling oil at least to the Describe the bearing (7).
  7. 根据权利要求1或6所述的油水混合冷却电机***，还包括轴承(7)，所述转子轴(31)通过所述轴承(7)耦合于所述壳体(1)上，所述转子轴(31)上设置有导流件，所述导流件上设置有导油斜面(61)和导油槽中的至少一种结构，所述导油斜面(61)和所述导油槽中的至少一种结构设置为将喷射至所述端部绕组(22)上并部分滴落至所述导流件上的所述冷却油导流至所述轴承(7)。The oil-water hybrid cooling motor system according to claim 1 or 6, further comprising a bearing (7), the rotor shaft (31) is coupled to the housing (1) through the bearing (7), and the rotor The shaft (31) is provided with a guide member, and the guide member is provided with at least one structure of an oil guide slope (61) and an oil guide groove, the oil guide slope (61) and the oil guide groove in the oil guide groove. At least one structure is provided to guide the cooling oil sprayed onto the end windings (22) and partially dripped onto the flow guides to the bearings (7).
  8. 根据权利要求7所述的油水混合冷却电机***，其中，所述导流件为嵌装于所述转子轴(31)上的转子压环(6)，所述转子压环(6)设置为将所述转子铁芯(32)轴向压紧于所述转子轴(31)上。The oil-water hybrid cooling motor system according to claim 7, wherein the flow guide is a rotor pressure ring (6) embedded on the rotor shaft (31), and the rotor pressure ring (6) is set to The rotor iron core (32) is axially compressed on the rotor shaft (31).
  9. 根据权利要求1所述的油水混合冷却电机***，其中，所述转子轴(31)为空心轴，所述***还包括嵌套于所述转子轴(31)内的导管(8)，所述导管(8)的内腔即为所述进油流道(311)，所述导管(8)的外径小于所述转子轴 (31)的内径；或，The oil-water hybrid cooling motor system according to claim 1, wherein the rotor shaft (31) is a hollow shaft, the system further comprises a conduit (8) nested in the rotor shaft (31), the The inner cavity of the conduit (8) is the oil inlet channel (311), and the outer diameter of the conduit (8) is smaller than the inner diameter of the rotor shaft (31); or,
    所述转子轴(31)为空心轴，所述转子轴(31)的内腔即为所述进油流道(311)，所述转子轴(31)的内壁设置有引流槽(314)，所述引流槽(314)为螺旋状并沿所述转子轴(31)的轴向延伸。The rotor shaft (31) is a hollow shaft, the inner cavity of the rotor shaft (31) is the oil inlet channel (311), and the inner wall of the rotor shaft (31) is provided with a drainage groove (314), The drainage groove (314) is helical and extends along the axial direction of the rotor shaft (31).
  10. 一种车辆，包括如权利要求1-9任一项所述的油水混合冷却电机***。A vehicle, comprising the oil-water hybrid cooling motor system according to any one of claims 1-9.
PCT/CN2021/103018 2020-08-18 2021-06-29 Oil-water combined cooling electric motor system, and vehicle WO2022037263A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010833898.6 2020-08-18
CN202010833898.6A CN111969791B (en) 2020-08-18 2020-08-18 Oil-water mixed cooling motor system and vehicle

Publications (1)

Publication Number Publication Date
WO2022037263A1 true WO2022037263A1 (en) 2022-02-24

Family

ID=73388375

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/103018 WO2022037263A1 (en) 2020-08-18 2021-06-29 Oil-water combined cooling electric motor system, and vehicle

Country Status (2)

Country Link
CN (1) CN111969791B (en)
WO (1) WO2022037263A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115967208A (en) * 2023-03-16 2023-04-14 四川宜宾力源电机有限公司 New energy automobile hybrid cooling formula motor
DE102022104357A1 (en) 2022-02-24 2023-08-24 Bayerische Motoren Werke Aktiengesellschaft Flow element for cooling a stator
CN117318356A (en) * 2023-11-30 2023-12-29 小米汽车科技有限公司 Motor and vehicle
FR3143909A1 (en) * 2022-12-20 2024-06-21 Valeo Eautomotive France Sas Electric machine, in particular electric motor

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111756141B (en) * 2020-07-06 2021-08-13 珠海格力电器股份有限公司 Motor rotor cooling structure, motor and automobile
CN111969791B (en) * 2020-08-18 2021-12-03 中国第一汽车股份有限公司 Oil-water mixed cooling motor system and vehicle
CN114629297B (en) * 2020-12-10 2023-11-17 宇通客车股份有限公司 Liquid cooling motor
CN112701856B (en) * 2020-12-25 2022-04-29 奇瑞汽车股份有限公司 Oil-cooled motor cooling system
CN113206563A (en) * 2021-04-21 2021-08-03 浙江零跑科技有限公司 Oil cold-hot electric driving power rotor structure
CN113162300B (en) * 2021-04-28 2023-04-14 中国第一汽车股份有限公司 Motor cooling system, motor and vehicle
CN113364184A (en) * 2021-05-07 2021-09-07 中国第一汽车股份有限公司 Direct cooling system applied to high-speed permanent magnet motor rotor and winding
CN113300506A (en) * 2021-05-28 2021-08-24 上海大学 Slot wedge type in-slot liquid cooling motor
CN115566830A (en) * 2021-06-30 2023-01-03 青岛海尔智能技术研发有限公司 Compressor and motor thereof
CN113572289B (en) * 2021-07-05 2022-05-31 合肥巨一动力***有限公司 Oil-cooling hollow rotating shaft structure
DE102021119990A1 (en) * 2021-08-02 2023-02-02 Bayerische Motoren Werke Aktiengesellschaft Cooling fluid guiding device for an electrical machine, electrical machine and method for providing an electrical machine
DE102021125659A1 (en) * 2021-10-04 2023-04-06 Bayerische Motoren Werke Aktiengesellschaft Cooling arrangements for an electromotive drive unit and its components
DE102021211273A1 (en) 2021-10-06 2023-04-06 Volkswagen Aktiengesellschaft Balancing disc with relief channels
CN114530989A (en) * 2022-03-01 2022-05-24 臻驱科技（上海）有限公司 Oil-cooled driving motor and assembling method thereof
CN114552892A (en) * 2022-03-01 2022-05-27 臻驱科技（上海）有限公司 Oil-cooled driving motor and assembling method thereof
CN114598051B (en) * 2022-03-02 2024-02-27 蔚来动力科技(合肥)有限公司 Motor for vehicle and vehicle
CN114567102B (en) * 2022-03-03 2023-07-11 苏州睿控电动有限公司 Oil cooling motor rotor cooling structure
CN114759706B (en) * 2022-03-17 2023-02-10 华为电动技术有限公司 Rotor, motor and electric vehicle
CN114977620B (en) * 2022-06-24 2023-08-29 金都电力江苏有限公司 Generator for motor vehicle

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106787452A (en) * 2015-11-23 2017-05-31 南车株洲电力机车研究所有限公司 A kind of oil-cooled motor
CN109038951A (en) * 2018-07-24 2018-12-18 上海大郡动力控制技术有限公司 The cooling structure of new-energy automobile electrical drive power assembly
CN109756056A (en) * 2017-11-07 2019-05-14 华为技术有限公司 Motor, power assembly, power-equipment and motor cooling means
WO2020013466A1 (en) * 2018-07-11 2020-01-16 엘지전자 주식회사 Motor
CN111969791A (en) * 2020-08-18 2020-11-20 中国第一汽车股份有限公司 Oil-water mixed cooling motor system and vehicle

Family Cites Families (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008043133A (en) * 2006-08-09 2008-02-21 Hitachi Via Mechanics Ltd Rocking actuator device and laser machining device
CN101227129B (en) * 2007-10-08 2011-09-07 南阳防爆集团有限公司 High-capacity non-salient pole nest plate type synchronous generator
CN101656445B (en) * 2009-09-14 2012-05-23 精进电动科技（北京）有限公司 System and method for cooling motors
JP6428434B2 (en) * 2015-03-27 2018-11-28 株式会社豊田自動織機 Compressor
DE102016110658A1 (en) * 2016-06-09 2017-12-14 Rainer Puls Cooling housing for an electric motor
DE102016215423A1 (en) * 2016-08-17 2018-02-22 Bayerische Motoren Werke Aktiengesellschaft Electric machine and vehicle with the electric machine
CN206712615U (en) * 2017-04-25 2017-12-05 沈阳工程学院 A kind of ultrahigh speed magneto sleeve rotor cooling structure
DE102017211135A1 (en) * 2017-06-30 2019-01-03 Audi Ag Electric machine and motor vehicle
CN207426901U (en) * 2017-10-30 2018-05-29 比亚迪股份有限公司 Electronic assembly and with its bogie and monorail train
WO2019124152A1 (en) * 2017-12-18 2019-06-27 日本電産株式会社 In-wheel motor
KR102018230B1 (en) * 2018-06-15 2019-09-04 엘지전자 주식회사 Electric motor
CN109327113B (en) * 2018-10-29 2023-12-26 深圳市泉胜新技术开发有限公司 Oil cooling motor cooling device
DE102018221569A1 (en) * 2018-12-12 2020-06-18 Thyssenkrupp Ag Rotor device for an electrical machine and electrical machine
CN209184335U (en) * 2018-12-24 2019-07-30 上海大郡动力控制技术有限公司 The cold cooling structure of oil for rotor
CN109510402A (en) * 2019-01-18 2019-03-22 中国第汽车股份有限公司 A kind of used in new energy vehicles oil-cooled motor system
KR102113230B1 (en) * 2019-01-25 2020-05-20 엘지전자 주식회사 Electric motor
KR102172262B1 (en) * 2019-01-25 2020-10-30 엘지전자 주식회사 Electric motor
CN109980825B (en) * 2019-03-27 2021-03-09 东风汽车集团有限公司 Oil-cooled motor
CN211127444U (en) * 2019-12-31 2020-07-28 中国第一汽车股份有限公司 Integrated electric drive system
CN210431099U (en) * 2020-02-04 2020-04-28 北京稳力科技有限公司 Mixed cooling structure of motor
CN111497596A (en) * 2020-04-14 2020-08-07 山东宏泰机械科技股份有限公司 Double-motor driving device of electric automobile
CN111478521A (en) * 2020-05-25 2020-07-31 精进电动科技股份有限公司 Mixed cooling motor
CN111509876A (en) * 2020-05-27 2020-08-07 精进电动科技股份有限公司 Stator core cooling structure and motor cooling system
CN111756133A (en) * 2020-07-06 2020-10-09 珠海格力电器股份有限公司 Motor cooling structure, motor, car

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106787452A (en) * 2015-11-23 2017-05-31 南车株洲电力机车研究所有限公司 A kind of oil-cooled motor
CN109756056A (en) * 2017-11-07 2019-05-14 华为技术有限公司 Motor, power assembly, power-equipment and motor cooling means
WO2020013466A1 (en) * 2018-07-11 2020-01-16 엘지전자 주식회사 Motor
CN109038951A (en) * 2018-07-24 2018-12-18 上海大郡动力控制技术有限公司 The cooling structure of new-energy automobile electrical drive power assembly
CN111969791A (en) * 2020-08-18 2020-11-20 中国第一汽车股份有限公司 Oil-water mixed cooling motor system and vehicle

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022104357A1 (en) 2022-02-24 2023-08-24 Bayerische Motoren Werke Aktiengesellschaft Flow element for cooling a stator
FR3143909A1 (en) * 2022-12-20 2024-06-21 Valeo Eautomotive France Sas Electric machine, in particular electric motor
CN115967208A (en) * 2023-03-16 2023-04-14 四川宜宾力源电机有限公司 New energy automobile hybrid cooling formula motor
CN117318356A (en) * 2023-11-30 2023-12-29 小米汽车科技有限公司 Motor and vehicle

Also Published As

Publication number Publication date
CN111969791B (en) 2021-12-03
CN111969791A (en) 2020-11-20

Similar Documents

Publication Publication Date Title
WO2022037263A1 (en) Oil-water combined cooling electric motor system, and vehicle
JP3967624B2 (en) Electric motor
US9729027B2 (en) Cooling structure of rotary electric machine
WO2021238656A1 (en) Stator core cooling structure and motor cooling system
WO2022057207A1 (en) Hybrid cooling system of electric drive system, and vehicle
CN110138145B (en) Water-cooling and oil-cooling combined permanent magnet synchronous motor
WO2021238762A1 (en) Hybrid cooling motor
US11309756B2 (en) Motor
CN110086296B (en) High-efficiency oil-cooled permanent magnet synchronous motor
CN114629297B (en) Liquid cooling motor
CN113241880A (en) Oil-cooled motor with built-in oil way structure
CN212367066U (en) Double-cooling-channel motor
US11973407B2 (en) Thermal management techniques for electric motors
CN110868022B (en) Oil-cooled motor structure, main drive motor and motor cooling system
WO2024087682A1 (en) Efficient oil-cooled motor
US20230299629A1 (en) Rotor, motor, and electric vehicle
CN218276240U (en) Oil-cooled motor
CN115664117B (en) Liquid cooling device of double-stator permanent magnet direct drive motor
JP6942881B2 (en) Cooling structure of rotary electric machine
EP4254744A1 (en) Motor system and vehicle having same
KR20120135347A (en) Lubricating structure for generator motor, and generator motor
CN209896865U (en) Efficient oil-cooled permanent magnet synchronous motor
CN209896863U (en) Water-cooling and oil-cooling combined permanent magnet synchronous motor
CN217935225U (en) Oil injection cooling structure for core part of motor
CN220754513U (en) Oil-cooled asynchronous motor

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21857359

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21857359

Country of ref document: EP

Kind code of ref document: A1