CN109980825A - A kind of efficiently cooling oil-cooled motor - Google Patents
A kind of efficiently cooling oil-cooled motor Download PDFInfo
- Publication number
- CN109980825A CN109980825A CN201910239905.7A CN201910239905A CN109980825A CN 109980825 A CN109980825 A CN 109980825A CN 201910239905 A CN201910239905 A CN 201910239905A CN 109980825 A CN109980825 A CN 109980825A
- Authority
- CN
- China
- Prior art keywords
- oil
- rotor core
- stator
- guide plate
- oil duct
- 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.)
- Granted
Links
Classifications
-
- 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
-
- 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
- H02K9/193—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil with provision for replenishing the cooling medium; with means for preventing leakage of the cooling medium
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention discloses a kind of efficiently cooling oil-cooled motors, rotor core including shaft and inner sleeve in shaft, rotor core axial ends passes through rotor end plates axial restraint, it further include oil guide plate, oil guide plate is arranged in the middle part of the axial direction of rotor core, multiple radial oil guide plate oil ducts are equipped in oil guide plate, axially hollow shaft oil duct is equipped in shaft, axial rotor core oil duct is equipped in rotor core, rotor end plates are equipped with the end plate grooves being connected to rotor core oil duct by rotor core side, oil guide plate oil duct both ends are connected to shaft oil duct and rotor core oil duct respectively.Cooling oil is transported to inside rotor core by oil guide plate and is cooled down by rotor core oil duct, is cooled down further through outer surface of the end plate grooves to rotor core, while cooling stator winding, is also cooled down rotor core.It is avoided by setting deflector and opens radial direction oil on rotor core directly to destroy rotor magnetic steel.
Description
Technical field
The present invention relates to motor cooling technologies, in particular to a kind of efficiently cooling oil-cooled motor.
Background technique
In used in new energy vehicles motor, most motors belong to water-cooling structure pattern, i.e., casing and stator core into
Row shrink-on is matched, and the heat of stator passes to casing by iron core, and casing internal is equipped with water channel again, and the heat of stator passes through cooling
Water is pulled away, which directly cool down to the heater element in motor, but has been carried out indirectly by casing
It is cooling, so cooling effect is poor.Although some oil-cooled motors carry out direct spraying cooling to stator winding, only to winding
Outer circumference surface cooled down, the inner peripheral surface and rotor of winding are not cooled down still, the cooling effect compared with water cooling electricity
Though machine has improvement, still bad.
Chinese patent CN106787452A discloses a kind of oil-cooled motor, and it is cooling logical which is provided with first inside the shell
Road is provided with oil outlet inwardly on the first cooling duct；The second radial cooling oil duct, the first cooling oil are provided in mounting base
Road and the second cooling oil duct jointly cool down the outside of stator winding and inner surface.Although the stator winding of the motor obtains
It is cooling, but rotor core but lacks cooling approach, if directly opening radial direction oil on rotor core is connected to shaft internal oil channel,
The magnet steel of rotor core can then be punched, be damaged.
Summary of the invention
Present invention aim to overcome above-mentioned the shortcomings of the prior art, provide it is a kind of can and meanwhile it is expeditiously cold
But the oil-cooled motor of stator winding and rotor core.
To achieve the above object, the present invention provides a kind of efficiently cooling oil-cooled motor, including shaft and inner sleeve are in institute
The rotor core in shaft is stated, rotor core axial ends passes through rotor end plates axial restraint, it is characterised in that: further includes housing
Oil guide plate in shaft, the oil guide plate are located at the centre of rotor core, are equipped with multiple oil guide plate oil ducts in the oil guide plate,
It is equipped with hollow shaft oil duct in the shaft, rotor core oil duct is equipped in the rotor core, the rotor end plates are by turning
Sub- iron core side is equipped with the end plate grooves being connected to the rotor core oil duct, and oil guide plate oil duct both ends are oily with shaft respectively
Road is connected to rotor core oil duct.
Preferably, the oil guide plate oil duct is disposed radially, and the rotor core oil duct is axially disposed, the rotor iron
In-core is equipped with magnet steel, and the magnet steel surrounds the rotor core oil duct.
Further, further include casing and stator, axial spray bar, the stator housing are fixed on the casing
On the outside of rotor core, nozzle opening is provided with towards stator direction on the spray bar.
Further, the casing is equipped with fixing lug boss, and the fixing lug boss is ring set open at one end, the fixation
Locating notch is provided on boss, the spray bar both ends are equipped with locating piece；In spray bar both ends insertion fixing lug boss, institute
It states locating piece and the locating notch cooperates.
Further, the stator includes stator core and stator winding, and multiple nozzle openings equably divide along axial direction
Cloth, and towards stator core and stator winding.
Further, it is additionally provided with stator fixing lug boss on the casing, is equipped with groove, institute in the middle part of the stator fixing lug boss
The protruding portion and groove for stating stator core cooperate.
Further, stator spigot edge, the diameter of the stator spigot edge and stator core are additionally provided on the casing
To end abutment.
Further, the stator spigot edge, the stator fixing lug boss and the spray bar are uniformly distributed, and two-by-two
Between be mutually staggered.
Beneficial effects of the present invention are as follows:
1, stator and rotor core are cooled down simultaneously.Cooling oil in spray bar and end plate grooves can respectively to stator core and
Stator winding is cooled down, and cooling oil is transported to inside rotor core by oil guide plate and is cooled down by rotor core oil duct, again
It is cooled down by outer surface of the end plate grooves to rotor core, in this way, while cooling stator winding, also by rotor core
It is cooled down.
2, structure setting is reasonable, convenient for manufacture.It is fixed by the individual spray bar of setting and casing to avoid directly in machine
Oil duct and oilhole are opened on shell；Radial deflector oil duct is set by setting deflector and axial rotor core oil duct connects
It is logical, it avoids and opens radial direction oil on rotor core directly to destroy rotor magnetic steel.
3, the positioning accuracy of stator and rotor is high.It is fixed, and passed through by axial direction of the stator fixing lug boss to stator
Bolt is fixedly connected, and is positioned by axle center of the stator spigot edge to stator, so that the positioning accuracy of stator and rotor is high.
Detailed description of the invention
Fig. 1 is structural front view of the invention.
Fig. 2 is internal galleries structural schematic diagram of the present invention.
Fig. 3 is structural side view of the invention.
Fig. 4 is the A direction view in Fig. 3.
Fig. 5 is spray bar structural schematic diagram.
Fig. 6 is the side view of rotor core.
Fig. 7 is the side view of oil guide plate.
Each part numbers are as follows in figure: casing 1, stator core 2, stator winding 3, rotor core 4, rotor core oil duct
401, magnet steel 402, lightening hole 403, rotor end plates 5, end plate grooves 501, shaft 6, shaft oil duct 601, spray bar 7, locating piece
701, nozzle opening 702, fixing lug boss 8, locating notch 801, oil guide plate 9, oil guide plate oil duct 901, stator spigot edge 10, stator
Fixing lug boss 11.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawing, convenient for more clearly understanding the present invention, but they
Limiting the invention.
As shown in Fig. 1~7, a kind of efficiently cooling oil-cooled motor, the rotor including shaft 6 and inner sleeve in shaft 6
Iron core 4,4 axial ends of rotor core pass through 5 axial restraint of rotor end plates, it is characterised in that: further include oil guide plate 9, oil guide plate 9
It is arranged in the middle part of the axial direction of rotor core 4, oil guide plate 9 is an annular slab, is equipped with multiple radial oil guide plate oil ducts in oil guide plate 9
901, shaft 6 is interior to be equipped with axially hollow shaft oil duct 601, and 601 one end of shaft oil duct connects oil inlet pipe.Other end closing；
It is equipped with axial rotor core oil duct 401 and lightening hole 403 in rotor core 4, is additionally provided with magnet steel 402, magnet steel in rotor core 4
402 surround rotor core oil duct 401, and lightening hole 403 is used to mitigate the weight of entire rotor core；Rotor end plates 5 lean on rotor iron
4 side of core is equipped with the end plate grooves 501 that are connected to rotor core oil duct 401,901 both ends of oil guide plate oil duct respectively with shaft oil duct
601 are connected to rotor core oil duct 401.In this way, the cooling oil come in from shaft oil duct successively passes through oil guide plate oil duct, rotor iron
Core oil road and end plate grooves, last radial be ejected on the inside of stator winding is cooled down, while rotor core oil duct is also to rotor
Iron core is cooled down, and cooling effect is further improved；By setting deflector, radial deflector oil duct and axial direction are set
The connection of rotor core oil duct, avoid and open radial direction oil on rotor core directly to destroying rotor magnetic steel.
Further include casing 1 and stator in above-mentioned technical proposal, be fixed with axial spray bar 7 on casing 1, outside stator
It covers and is provided with equally distributed nozzle opening 702 towards stator direction on 4 outside of rotor core, spray bar 7.Stator includes stator core
2 and stator winding 3, stator core 2 be located at the middle part of stator winding 3 and protrude from stator winding 3, nozzle opening 702 is by middle part
It is aligned with stator core 2, nozzle opening 702 is aligned by two sides with stator winding 3.In this way, the nozzle opening in the middle part of spray bar is to fixed
Sub- iron core carries out Oil injection cooling, and the nozzle opening of spray bar two sides is to progress Oil injection cooling on the outside of stator winding.
In above-mentioned technical proposal, casing 1 is equipped with fixing lug boss 8, and fixing lug boss 8 is ring set open at one end, and fixation is convex
Locating notch 801 is provided on platform 8,7 both ends of spray bar are equipped with locating piece 701；It is fixed in 7 both ends of spray bar insertion fixing lug boss 8
Position block 701 and locating notch 801 cooperate.Spray bar is connected and fixed with casing realization in this way, avoids directly opening oil duct on casing
And oilhole, so that simplified manufacturing process, it is easy to accomplish.
In above-mentioned technical proposal, it is additionally provided with stator fixing lug boss 11 on casing 1, is equipped in the middle part of stator fixing lug boss 11 recessed
Slot, the protruding portion and groove of stator core 2 cooperate.It is additionally provided with stator spigot edge 10 on casing 1, stator spigot edge 10 and fixed
The longitudinal end of sub- iron core 2 abuts.Stator spigot edge 10, stator fixing lug boss 11 and spray bar 7 are uniformly distributed, and two-by-two it
Between be mutually staggered, avoid the formation of interference.In this way, stator spigot edge positions the axle center of stator core, stator is fixed
Boss positions the axial direction of stator core, and is realized by bolt and be fixedly connected with stator core, stator and rotor
Positioning accuracy is high.
Claims (8)
1. a kind of efficiently cooling oil-cooled motor, the rotor core (4) including shaft (6) and inner sleeve on the shaft (6),
Rotor core (4) axial ends passes through rotor end plates (5) axial restraint, it is characterised in that: further includes housing on shaft (6)
Oil guide plate (9), the oil guide plate (9) are located at the centre of rotor core (4), are equipped with multiple Oil Guide leaf fats in the oil guide plate (9)
Road (901), the shaft (6) is interior to be equipped with hollow shaft oil duct (601), and rotor core oil is equipped in the rotor core (4)
Road (401), the rotor end plates (5) are equipped with the end plate being connected to the rotor core oil duct (401) by rotor core (4) side
Groove (501), oil guide plate oil duct (901) both ends are connected to shaft oil duct (601) and rotor core oil duct (401) respectively.
2. a kind of efficiently cooling oil-cooled motor according to claim 1, it is characterised in that: the oil guide plate oil duct
(901) it is disposed radially, the rotor core oil duct (401) is axially disposed, and magnet steel is equipped in the rotor core (4)
(402), the magnet steel (402) surrounds the rotor core oil duct (401).
3. a kind of efficiently cooling oil-cooled motor according to claim 2, it is characterised in that: further include casing (1) and
Stator is fixed with axial spray bar (7) on the casing (1), and the stator housing is described on the outside of rotor core (4)
Nozzle opening (702) are provided with towards stator direction on spray bar (7).
4. a kind of efficiently cooling oil-cooled motor according to claim 3, it is characterised in that: set on the casing (1)
Have fixing lug boss (8), the fixing lug boss (8) is ring set open at one end, is provided with locating notch on the fixing lug boss (8)
(801), spray bar (7) both ends are equipped with locating piece (701)；In the spray bar (7) both ends insertion fixing lug boss (8),
The locating piece (701) and the locating notch (801) cooperate.
5. a kind of efficiently cooling oil-cooled motor according to claim 3, it is characterised in that: the stator includes stator
Iron core (2) and stator winding (3), multiple nozzle openings (702) are evenly distributed along axial direction, and towards stator core (2) and
Stator winding (3).
6. a kind of efficiently cooling oil-cooled motor according to claim 4, it is characterised in that: on the casing (1) also
Equipped with stator fixing lug boss (11), groove, the protruding portion of the stator core (2) are equipped in the middle part of the stator fixing lug boss (11)
Cooperate with groove.
7. a kind of efficiently cooling oil-cooled motor according to claim 6, it is characterised in that: on the casing (1) also
Equipped with stator spigot edge (10), the stator spigot edge (10) abuts with the longitudinal end of stator core (2).
8. a kind of efficiently cooling oil-cooled motor according to claim 7, it is characterised in that: the stator spigot edge
(10), the stator fixing lug boss (11) and the spray bar (7) are uniformly distributed, and are mutually staggered between any two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910239905.7A CN109980825B (en) | 2019-03-27 | 2019-03-27 | Oil-cooled motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910239905.7A CN109980825B (en) | 2019-03-27 | 2019-03-27 | Oil-cooled motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109980825A true CN109980825A (en) | 2019-07-05 |
| CN109980825B CN109980825B (en) | 2021-03-09 |
Family
ID=67081146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910239905.7A Active CN109980825B (en) | 2019-03-27 | 2019-03-27 | Oil-cooled motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109980825B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110190713A (en) * | 2019-07-06 | 2019-08-30 | 上海智御动力技术有限公司 | Dual-rotor direct cool electric machine |
| 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 |
| CN114567102A (en) * | 2022-03-03 | 2022-05-31 | 苏州睿控电动有限公司 | Oil-cooled motor rotor cooling structure |
| US11431227B2 (en) | 2020-03-03 | 2022-08-30 | Dana Belgium N.V. | Systems and methods for providing direct spray cooling in an electric motor |
| WO2022242496A1 (en) * | 2021-05-21 | 2022-11-24 | 华为数字能源技术有限公司 | Stator, electric motor and electric vehicle |
| WO2024125515A1 (en) * | 2022-12-12 | 2024-06-20 | 蔚来动力科技(合肥)有限公司 | Rotor cooling structure, rotor, and motor |
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| US5682074A (en) * | 1994-03-02 | 1997-10-28 | Northrop Grumman Corporation | Electric vehicle motor |
| CN103296824A (en) * | 2013-05-20 | 2013-09-11 | 精进电动科技（北京）有限公司 | Automotive motor and oil cooling system thereof |
| CN103532307A (en) * | 2013-10-21 | 2014-01-22 | 南车株洲电力机车研究所有限公司 | Permanent magnet synchronous traction motor and oil cooling device thereof |
| CN204013087U (en) * | 2014-06-23 | 2014-12-10 | 比亚迪股份有限公司 | Motor and there is its electric automobile |
| CN104704723A (en) * | 2012-08-08 | 2015-06-10 | Ac推进有限公司 | Liquid cooled electric motor |
| CN106655563A (en) * | 2016-12-01 | 2017-05-10 | 华中科技大学 | Motor cooling structure and non-casing motor with same |
| CN206389238U (en) * | 2016-12-21 | 2017-08-08 | 合肥巨一动力系统有限公司 | A kind of motor stator and casing mounting structure designed with spray bar |
-
2019
- 2019-03-27 CN CN201910239905.7A patent/CN109980825B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5682074A (en) * | 1994-03-02 | 1997-10-28 | Northrop Grumman Corporation | Electric vehicle motor |
| CN104704723A (en) * | 2012-08-08 | 2015-06-10 | Ac推进有限公司 | Liquid cooled electric motor |
| CN103296824A (en) * | 2013-05-20 | 2013-09-11 | 精进电动科技（北京）有限公司 | Automotive motor and oil cooling system thereof |
| CN103532307A (en) * | 2013-10-21 | 2014-01-22 | 南车株洲电力机车研究所有限公司 | Permanent magnet synchronous traction motor and oil cooling device thereof |
| CN204013087U (en) * | 2014-06-23 | 2014-12-10 | 比亚迪股份有限公司 | Motor and there is its electric automobile |
| CN106655563A (en) * | 2016-12-01 | 2017-05-10 | 华中科技大学 | Motor cooling structure and non-casing motor with same |
| CN206389238U (en) * | 2016-12-21 | 2017-08-08 | 合肥巨一动力系统有限公司 | A kind of motor stator and casing mounting structure designed with spray bar |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110190713A (en) * | 2019-07-06 | 2019-08-30 | 上海智御动力技术有限公司 | Dual-rotor direct cool electric machine |
| US11431227B2 (en) | 2020-03-03 | 2022-08-30 | Dana Belgium N.V. | Systems and methods for providing direct spray cooling in an electric motor |
| US11881757B2 (en) | 2020-03-03 | 2024-01-23 | Dana Belgium N.V. | Systems and methods for providing direct spray cooling in an electric 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 |
| 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 |
| WO2022242496A1 (en) * | 2021-05-21 | 2022-11-24 | 华为数字能源技术有限公司 | Stator, electric motor and electric vehicle |
| CN114567102A (en) * | 2022-03-03 | 2022-05-31 | 苏州睿控电动有限公司 | Oil-cooled motor rotor cooling structure |
| WO2024125515A1 (en) * | 2022-12-12 | 2024-06-20 | 蔚来动力科技(合肥)有限公司 | Rotor cooling structure, rotor, and motor |
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|---|---|
| CN109980825B (en) | 2021-03-09 |
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