CN220172944U - Oil-cooled driving motor rotor, oil-cooled driving motor and vehicle - Google Patents
Oil-cooled driving motor rotor, oil-cooled driving motor and vehicle Download PDFInfo
- Publication number
- CN220172944U CN220172944U CN202320557394.5U CN202320557394U CN220172944U CN 220172944 U CN220172944 U CN 220172944U CN 202320557394 U CN202320557394 U CN 202320557394U CN 220172944 U CN220172944 U CN 220172944U
- Authority
- CN
- China
- Prior art keywords
- oil
- end plate
- rotor
- rotor shaft
- rotor core
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
- 238000001816 cooling Methods 0.000 claims abstract description 49
- 238000004804 winding Methods 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 230000017525 heat dissipation Effects 0.000 description 4
- 239000012809 cooling fluid Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Landscapes
- Motor Or Generator Cooling System (AREA)
Abstract
The utility model discloses an oil-cooled driving motor rotor, an oil-cooled driving motor and a vehicle, which comprise a rotor shaft, two end plates and a rotor core, wherein the rotor core is sleeved on the rotor shaft, and the two end plates are respectively positioned at two sides of the rotor core; the rotor shaft is provided with a rotor shaft oil path extending along the axial direction, a plurality of rotor shaft oil outlet holes are formed in the outer walls of the two end parts of the rotor shaft at intervals along the circumferential direction, and each rotor shaft oil outlet hole is communicated with the rotor shaft oil path; the end plate is sequentially provided with a first end plate oil passage and a second end plate oil passage in the direction from the middle part to the edge on the side surface close to the rotor core, and the first end plate oil passage can be communicated with a corresponding rotor shaft oil outlet on the rotor shaft; the first end plate oil channels on the two end plates are staggered and oppositely arranged; a plurality of axial through rotor core oil way through holes are formed in the rotor core; the end plate is provided with a plurality of oil outlet surfaces on the side away from the rotor core. The utility model can ensure that oil cooling oil flows through the inside of the rotor core and the middle part and the two ends of the inner side of the stator winding.
Description
Technical Field
The utility model belongs to the technical field of oil-cooled driving motor rotors, and particularly relates to an oil-cooled driving motor rotor, an oil-cooled driving motor and a vehicle.
Background
The efficiency of the cooling system of the motor determines the performance index of the motor, and the oil circuit of the oil cooling motor determines the efficiency of cooling the heating element of the motor by cooling oil. At present, a rotor oil way of an oil-cooled motor generally adopts a rotor shaft, an end plate and a rotor iron core. The cooling oil enters the oil duct between the end plate and the end face of the rotor core through the oil outlet communicated with the middle hole of the rotor shaft core, flows out from the oil outlet on the outer circular surface of the end plate under the action of centrifugal force, splashes to the inner side of the motor stator winding, and directly flows through the surface of the heating element to take away the heat of the motor. As disclosed in patent document CN214799077U, a motor with a parallel oil cooling structure realizes rotor oil discharge through an annular groove and an oil discharge nozzle. In another example, in the motor rotor oil cooling structure disclosed in CN214069749U, the rotor oil is thrown to the stator winding through an oil groove formed in the end plate. However, there is a problem in designing these oil passages: the cooling oil only flows through the end surfaces of the two sides of the rotor core and splashes to the lower part of the inner side of the stator winding, so that the heat of the central part of the rotor core cannot be directly cooled, and only the lower part of the inner side of the stator winding can be directly cooled, thereby easily causing local overheating.
Therefore, there is a need to develop an oil-cooled drive motor rotor, an oil-cooled drive motor, and a vehicle.
Disclosure of Invention
The utility model aims to provide an oil-cooled driving motor rotor, an oil-cooled driving motor and a vehicle, which can ensure that oil cooling oil flows through the inside of a rotor core and the middle part and the two end parts of the inner side of a stator winding.
In a first aspect, the utility model provides an oil-cooled driving motor rotor, which comprises a rotor shaft, two end plates and a rotor core, wherein the rotor core is sleeved on the rotor shaft, and the two end plates are respectively positioned at two sides of the rotor core; the rotor shaft is provided with a rotor shaft oil path extending along the axial direction, a plurality of rotor shaft oil outlet holes are formed in the outer walls of the two end parts of the rotor shaft at intervals along the circumferential direction, and each rotor shaft oil outlet hole is communicated with the rotor shaft oil path;
the end plate is provided with a first end plate oil passage and a second end plate oil passage in sequence from the middle part to the edge on the side surface close to the rotor core, the first end plate oil passage and the second end plate oil passage are not communicated, the first end plate oil passage can be communicated with a corresponding rotor shaft oil outlet on the rotor shaft,
the first end plate oil channels on the two end plates are staggered and oppositely arranged;
a plurality of rotor core oil way through holes which are axially communicated are formed in the rotor core;
the end plate is provided with a plurality of oil outlet surfaces on the side far away from the rotor core;
cooling oil flowing out of the rotor shaft oil outlet through the rotor shaft oil way enters the corresponding first end plate oil way;
the cooling oil flowing out through the first end plate oil channel can enter the corresponding rotor core oil way through hole under the action of centrifugal force;
cooling oil flowing out through the rotor core oil passage through holes flows into the corresponding second end plate oil passage and the oil outlet surface respectively;
the cooling oil flowing out through the oil passage of the second end plate and the oil outlet surface can be thrown to the inner side of the stator winding under the action of centrifugal force.
Optionally, the end plate is provided with an oil outlet hole which can be communicated with the second end plate oil duct on the side close to the rotor core, the cooling oil flowing out through the second end plate oil duct flows into the corresponding oil outlet hole, and the cooling oil flowing out through the oil outlet hole can be thrown to the middle area inside the stator winding under the action of centrifugal force.
Alternatively, the cooling oil flowing out through the oil outlet surface can be thrown off by centrifugal force to the end region inside the stator winding.
Optionally, the number of second end plate oil passages is twice that of the first end plate oil passages.
Optionally, the first end plate oil duct is totally three, is circumference equipartition, can ensure the homogeneity of cooling.
Optionally, the second end plate oil duct is six altogether, is circumference equipartition, and wherein three second end plate oil duct and three first end plate oil duct one-to-one set up, and the region one-to-one between other three second end plate oil duct and the adjacent two first end plate oil duct sets up, can ensure refrigerated homogeneity.
Optionally, six through holes of the rotor core oil way are uniformly distributed in the circumferential direction, so that the cooling uniformity can be ensured.
Optionally, the first end plate oil channel is generally U-shaped with an opening facing in the direction of the end plate edge.
In a second aspect, the utility model provides an oil-cooled drive motor, which adopts the oil-cooled drive motor rotor.
In a third aspect, the utility model provides a vehicle employing an oil-cooled drive motor according to the utility model.
The utility model has the following advantages:
(1) The cooling oil enters the first end plate oil passage of the end plate from the rotor shaft oil passage through the rotor shaft oil outlet, enters the rotor core oil passage through holes under the action of centrifugal force after passing through the pipeline formed by the first end plate oil passage and the end faces of the rotor core, then flows into the adjacent rotor core oil passage through holes, relatively flows to opposite side end faces from the end faces at two sides of the rotor core, and passes through the second end plate oil passage and the oil outlet face at the opposite side end faces, wherein the cooling oil passing through the second end plate oil passage is thrown to the middle area of the stator winding by centrifugal force from the oil outlet hole, and the cooling oil passing through the oil outlet face is thrown to the end area of the stator winding by centrifugal force, so that the effect of efficiently cooling the heating element of the cooling oil driving motor is achieved.
(2) The cooling oil respectively flows through the inner parts of the rotor iron cores from the end surfaces of the two sides of the rotor iron cores and then reaches the end surface of the other side through the staggered opposite arrangement of the end plates, so that the heat in the rotor iron cores is taken away, and the cooling oil is thrown to the middle area and the end area of the stator winding through the oil outlet holes and the oil outlet surface of the end plates by centrifugal force, so that the cooling oil uniformly reaches the surfaces of heating elements, and the heat dissipation efficiency and the reliability of the motor are improved.
In summary, the oil duct flowing through the rotor is formed by the cooperation of the simple end plate and the hole and the oil duct in the rotor core, and meanwhile, the area of the cooling oil thrown to the end winding of the stator is expanded, so that the heat dissipation efficiency is better, the reliability of the motor is improved, and meanwhile, the conventional rotor assembly process can be continuously used.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic sectional view of an oil-cooled drive motor in this embodiment;
fig. 2 is a schematic sectional view of an oil-cooled drive motor with a rotor core removed in the present embodiment;
fig. 3 is a perspective view of the end plate in the present embodiment;
fig. 4 is a sectional view of the rotor core and the end plate after assembly in the present embodiment;
fig. 5 is a front view of the rotor of the oil-cooled drive motor in the present embodiment;
fig. 6 is a perspective view showing the rotor end plate and the iron core after assembly in the present embodiment:
in the figure, 1-rotor shaft, 11-rotor shaft oil outlet, 12-rotor shaft oil passage, 2-end plate, 21-first end plate oil passage, 22-second end plate oil passage, 23-oil outlet, 24-oil outlet face, 3-rotor core, 31-rotor core oil passage through hole, 4-stator winding, 41-middle region, 42-end region inside the stator winding.
Detailed Description
The present utility model will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1 to 6, in the present embodiment, an oil-cooled driving motor rotor includes a rotor shaft 1, two end plates 2 and a rotor core 3, the rotor core 3 is sleeved on the rotor shaft 1, and the two end plates 2 are respectively located at two sides of the rotor core 3. The rotor shaft 1 is provided with a rotor shaft oil path 12 extending along the axial direction, a plurality of rotor shaft oil outlet holes 11 are arranged on the outer walls of the two ends of the rotor shaft 1 at intervals along the circumferential direction, and each rotor shaft oil outlet hole 11 is communicated with the rotor shaft oil path 12. The end plate 2 is provided with a first end plate oil passage 21 and a second end plate oil passage 22 in sequence from the middle to the edge on the side surface close to the rotor core, the first end plate oil passage 21 and the second end plate oil passage 22 are not communicated, and the first end plate oil passage 21 can be communicated with the corresponding rotor shaft oil outlet 11 on the rotor shaft 1. The rotor core 3 is provided with a plurality of rotor core oil passage through holes 31 penetrating in the axial direction. The end plate 2 is provided with a plurality of oil outlet surfaces 24 on the side facing away from the rotor core. The cooling oil flowing out through the rotor shaft oil outlet hole 11 of the rotor shaft oil passage 12 enters the corresponding first end plate oil passage 21. The cooling oil flowing out through the first end plate oil passage 21 can enter the corresponding rotor core oil passage through-hole 31 by centrifugal force. The cooling fluid flowing out through the rotor core oil passage through-hole 31 flows into the corresponding second end plate oil passage 22 and oil outlet face 24, respectively. The cooling oil flowing out through the second end plate oil passage 22 and the oil outlet surface 24 can be thrown to the inner side of the stator winding under the centrifugal force.
As shown in fig. 1 to 3, in the present embodiment, the end plate 2 is provided with oil outlet holes 23 on the side close to the rotor core, which can communicate with the second end plate oil passages 22, the cooling oil flowing out through the second end plate oil passages 22 flows into the corresponding oil outlet holes 23, and the cooling oil flowing out through the oil outlet holes 23 can be thrown to the intermediate region 41 inside the stator winding 4 by centrifugal force. The cooling oil flowing out through the oil outlet surface 24 can be thrown off by centrifugal force into the end region 42 inside the stator winding 4.
As shown in fig. 1 to 6, in the present embodiment, after cooling oil enters the first end plate oil passage 21 of the end plate 2 from the rotor shaft oil passage 12 through the rotor shaft oil outlet hole 11 and passes through the pipe formed by the first end plate oil passage 21 and the end face of the rotor core 3, it enters the rotor core oil passage through hole 31 by centrifugal force, then it flows into the adjacent rotor core oil passage through hole 31, flows relatively from both side end faces to the opposite side end face of the rotor core 3, where it passes through the second end plate oil passage 22 and the oil outlet face 24, respectively, where the cooling oil passing through the second end plate oil passage 22 is thrown by centrifugal force to the stator winding middle region 42 from the oil outlet hole 23, and the cooling oil passing through the oil outlet face 24 is thrown by centrifugal force to the stator winding end region 42.
As shown in fig. 3 and 4, in the present embodiment, the number of the second end plate oil passages 22 is twice that of the first end plate oil passages 21. Such as: the first end plate oil passages 21 are distributed uniformly in the circumferential direction. Six second end plate oil ducts 22 are circumferentially and uniformly distributed, wherein three second end plate oil ducts 22 are arranged in one-to-one correspondence with three first end plate oil ducts 21, and the other three second end plate oil ducts 22 are arranged in one-to-one correspondence with areas between two adjacent first end plate oil ducts 21. Six oil way through holes 31 of the rotor core are uniformly distributed in the circumferential direction.
As shown in fig. 3, in this embodiment, the first end plate oil passage 21 is generally U-shaped with an opening facing the edge of the end plate 2.
In this embodiment, the first end plate oil channels 21 on the two end plates 2 are arranged in a staggered and opposite manner, so that the cooling oil flows through the inside of the rotor core 3 from the end surfaces at two sides of the rotor core 3 to the end surface at the other side, thereby taking away the heat in the rotor core 3, and the cooling oil is thrown to the middle area 42 and the end area 42 of the stator winding 4 by centrifugal force through the oil outlet holes 23 and the oil outlet surface 24 of the end plates 2, so that the cooling oil uniformly reaches the surface of the heating element, and the heat dissipation efficiency and the reliability of the motor are improved.
In this embodiment, through the cooperation of the simple end plate 2 and the hole and the oil duct inside the rotor core 3, the oil duct flowing through the inside of the oil-cooled driving motor rotor is formed, and meanwhile, the area of the cooling oil thrown to the stator end winding is expanded, so that the heat dissipation efficiency is better, the reliability of the oil-cooled driving motor is improved, and meanwhile, the conventional assembly process of the oil-cooled driving motor rotor can be continuously used.
As shown in fig. 1 and 2, in the present embodiment, an oil-cooled drive motor, the oil-cooled drive motor rotor as described in the present embodiment is employed.
In this embodiment, a vehicle employs the oil-cooled drive motor as described in this embodiment.
The above examples are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above examples, and any other changes, modifications, substitutions, combinations, and simplifications that do not depart from the spirit and principle of the present utility model should be made in the equivalent manner, and the embodiments are included in the protection scope of the present utility model.
Claims (10)
1. The utility model provides an oil cooling driving motor rotor, includes rotor shaft (1), two end plates (2) and rotor core (3), rotor core (3) cover are established on rotor shaft (1), and two end plates (2) are located the both sides of rotor core (3) respectively; the method is characterized in that: the rotor shaft (1) is provided with a rotor shaft oil way (12) extending along the axial direction, a plurality of rotor shaft oil outlets (11) are arranged on the outer walls of the two ends of the rotor shaft (1) at intervals along the circumferential direction, and each rotor shaft oil outlet (11) is communicated with the rotor shaft oil way (12);
the end plate (2) is provided with a first end plate oil passage (21) and a second end plate oil passage (22) in sequence from the middle to the edge on the side surface close to the rotor core, the first end plate oil passage (21) is not communicated with the second end plate oil passage (22), the first end plate oil passage (21) can be communicated with a corresponding rotor shaft oil outlet (11) on the rotor shaft (1),
the first end plate oil channels (21) on the two end plates (2) are staggered and oppositely arranged;
a plurality of rotor core oil way through holes (31) which are axially communicated are formed in the rotor core (3);
the end plate (2) is provided with a plurality of oil outlet surfaces (24) on the side far away from the rotor core;
cooling oil flowing out of the rotor shaft oil outlet hole (11) through the rotor shaft oil way (12) enters the corresponding first end plate oil way (21);
the cooling oil flowing out through the first end plate oil channel (21) can enter the corresponding rotor core oil way through hole (31) under the action of centrifugal force;
the cooling oil flowing out through the rotor core oil passage through hole (31) flows into the corresponding second end plate oil passage (22) and the oil outlet surface (24) respectively;
the cooling oil flowing out through the second end plate oil duct (22) and the oil outlet surface (24) can be thrown to the inner side of the stator winding under the action of centrifugal force.
2. The oil-cooled drive motor rotor of claim 1, wherein: the end plate (2) is provided with an oil outlet (23) which can be communicated with the second end plate oil duct (22) on the side close to the rotor core, cooling oil flowing out of the second end plate oil duct (22) flows into the corresponding oil outlet (23), and cooling oil flowing out of the oil outlet (23) can be thrown to an inner middle area (41) of the stator winding (4) under the action of centrifugal force.
3. The oil-cooled drive motor rotor of claim 1, wherein: the cooling oil flowing out through the oil outlet surface (24) can be thrown off by centrifugal force to an end region (42) on the inner side of the stator winding (4).
4. The oil-cooled drive motor rotor of claim 1, wherein: the number of second end plate oil passages (22) is twice that of the first end plate oil passages (21).
5. The oil-cooled drive motor rotor of claim 4, wherein: the first end plate oil passages (21) are uniformly distributed in the circumferential direction.
6. An oil cooled drive motor rotor as recited in claim 5, wherein: six second end plate oil ducts (22) are circumferentially and uniformly distributed, wherein three second end plate oil ducts (22) are arranged in one-to-one correspondence with three first end plate oil ducts (21), and the other three second end plate oil ducts (22) are arranged in one-to-one correspondence with areas between two adjacent first end plate oil ducts (21).
7. The oil-cooled drive motor rotor of claim 6, wherein: six oil way through holes (31) of the rotor core are uniformly distributed in the circumferential direction.
8. The oil-cooled drive motor rotor of claim 1, wherein: the first end plate oil duct (21) is integrally U-shaped, and an opening of the U-shaped faces to the edge direction of the end plate (2).
9. An oil-cooled driving motor, characterized in that: use of an oil-cooled drive motor rotor according to any one of claims 1 to 8.
10. A vehicle, characterized in that: an oil-cooled drive motor according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320557394.5U CN220172944U (en) | 2023-03-21 | 2023-03-21 | Oil-cooled driving motor rotor, oil-cooled driving motor and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320557394.5U CN220172944U (en) | 2023-03-21 | 2023-03-21 | Oil-cooled driving motor rotor, oil-cooled driving motor and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220172944U true CN220172944U (en) | 2023-12-12 |
Family
ID=89067624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320557394.5U Active CN220172944U (en) | 2023-03-21 | 2023-03-21 | Oil-cooled driving motor rotor, oil-cooled driving motor and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220172944U (en) |
-
2023
- 2023-03-21 CN CN202320557394.5U patent/CN220172944U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109038951B (en) | Cooling structure of new energy automobile electric drive assembly | |
| EP3079239B1 (en) | Electrical machine and method | |
| EP2058926B1 (en) | Enhanced motor cooling system | |
| US6304011B1 (en) | Rotary electrical machines | |
| US11005316B2 (en) | Electrical drive device for a motor vehicle | |
| US5644179A (en) | Gas cooled end turns for dynamoelectric machine rotor | |
| RU2695320C1 (en) | Combined cooling system of closed inductor machine | |
| WO2021027301A1 (en) | Stator block, stator assembly, and cooling system for stator assembly | |
| CN111969767A (en) | Motor cooling system and motor | |
| CN115765258A (en) | Axial magnetic field motor and stator cooling structure and manufacturing method thereof | |
| CN115912734A (en) | Axial magnetic field motor and stator cooling structure and manufacturing method thereof | |
| CN115882622A (en) | Axial magnetic field motor and stator cooling structure and manufacturing method thereof | |
| CN110768414A (en) | Cooling structure of permanent magnet motor | |
| CN110601393A (en) | Electric machine | |
| CN220172944U (en) | Oil-cooled driving motor rotor, oil-cooled driving motor and vehicle | |
| JP2019216532A (en) | Rotor of rotary electric machine | |
| CN115800576B (en) | Permanent magnet motor with high-efficiency air-water mixed cooling system | |
| CN114567102B (en) | Oil cooling motor rotor cooling structure | |
| CN115498840A (en) | Axial flux motor direct cooling system and manufacturing method of stator core thereof | |
| CN115021437A (en) | Stator module, motor and have its car | |
| CN110360223B (en) | Air bearing | |
| CN216872939U (en) | Stator and motor that contain cooling structure | |
| CN220325353U (en) | Cooling structure of motor stator, axial flux motor and vehicle | |
| CN216599308U (en) | Balance plate of motor and motor | |
| CN220067143U (en) | Motor with a motor housing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |