CN108880024A - Motor stator oil air-cooled structure - Google Patents
Motor stator oil air-cooled structure Download PDFInfo
- Publication number
- CN108880024A CN108880024A CN201810802054.8A CN201810802054A CN108880024A CN 108880024 A CN108880024 A CN 108880024A CN 201810802054 A CN201810802054 A CN 201810802054A CN 108880024 A CN108880024 A CN 108880024A
- Authority
- CN
- China
- Prior art keywords
- oil
- stator
- motor
- cooling
- stator 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.)
- Pending
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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
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/25—Devices for sensing temperature, or actuated thereby
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
A kind of motor stator oil air-cooled structure, including：Electric machine casing, in being circumferentially with several shell oil grooves in shell；Stator is arranged in electric machine casing, including stator core and stator winding；Circumferential oil circuit is equipped in the stator core, the circumferential direction oil circuit is connected to each stator core slot, shell oil groove respectively；Stator winding and circumferential oil circuit radial clearance arrangement are in the stator core slot so as to cold oil return.The present invention improves the heat dissipation performance of motor so that cooling oil directly cools down end and the biggish stator winding of calorific value by setting stator cooling oil path.
Description
Technical field
The present invention relates to a kind of technology in new-energy automobile field, specifically a kind of motor stator oil air-cooled structure.
Background technique
Ev industry is following as the environmental protection measure and environmental policy of various countries are increasingly stringent just in high speed development
Electric automobile market will further expansion.And permanent magnet synchronous motor, as electric car inner core component, characteristic determines
The main performance index of automobile.
With the increase of power of motor density, requirement of the new-energy automobile field to motor is higher and higher, and motor is scattered
Heat directly restricts the raising of electric car power density and the electrical and mechanical properties of motor.
Motor mainly uses water cooling or the cold mode of oil to be cooled down at present, and traditional water-cooling structure passes through electric machine casing surface
Water channel the heat that stator generates is swapped out system.The water-cooling structure is larger to quantity of heat production and has the winding of insulating layer barrier
Cooling is limited, and under the working long hours of motor, it is very fast certainly will to will cause winding temperature rise.
Using the cold mode of oil, cooling oil can directly act on inner heat position and be cooled down, therefore can be significantly
Improve cooling efficiency.But generally use that cooling oil falls on stator end, winding carries out cooling mode, which in existing design
It is even to may result in stator inhomogeneous cooling.
Summary of the invention
The present invention In view of the above shortcomings of the prior art, proposes a kind of motor stator oil air-cooled structure, passes through setting
Stator cooling oil path improves the heat dissipation performance of motor so that cooling oil directly cools down stator winding and end.
The present invention is achieved by the following technical solutions：
The present invention includes：
Electric machine casing, in being circumferentially with several shell oil grooves in shell；
Stator is arranged in electric machine casing, including stator core and stator winding；It is equipped in the stator core circumferential
Oil circuit, the circumferential direction oil circuit are connected to each stator core slot, shell oil groove respectively；
Stator winding and circumferential oil circuit radial clearance arrangement are in the stator core slot so as to cold oil return.
The circumferential direction oil circuit and stator core slot, winding space while cooling to stator winding axially through synchronizing pair
Stator end is cooling.
The electric machine casing is equipped with end cap, and the end cap is equipped with the oil return hole being connected with external oil return line.
The oil return hole is arranged in end cap bottom.
The electric machine casing and stator core are assembled using hot cover process.
Preferably, the present invention is additionally provided with temperature sensor, and the external oil return line is equipped with cooling oil flow controller, institute
Cooling oil flow controller is stated for judging the motor internal temperature information that temperature sensor is fed back, to control motor
Middle cooling oil stream amount；When motor internal temperature is excessively high, the control of cooling oil flow controller increases the cooling flowed into inside motor
Oil, while the liquid level of cooling oil inside motor is monitored, prevent cooling oil liquid level excessively high；When motor internal temperature is normal,
The control of cooling oil flow controller reduces the cooling oil flowed into inside motor；By this method, the flow of motor cooling oil is realized
Control improves cooling efficiency.
Technical effect
Compared with prior art, the present invention is by setting stator cooling oil path, so that cooling oil is directly to end and fever
It measures biggish stator winding to be cooled down, improves the heat dissipation performance of motor.
Detailed description of the invention
Fig. 1 is the schematic diagram of embodiment 1；
Fig. 2 is circumferential oil channel structures schematic diagram in embodiment 1；
In figure：Electric machine casing 1, stator 2, end cap 3, cooling oil flow controller 4, shell oil groove 11, oil groove oilhole 12, shell
Body oil inlet 13, shell oil outlet 14, stator core 21, stator winding 22, circumferential oil circuit 23, radial fuel feed hole 24, oil return hole
31, stator core slot fuel feed hole 231.
Specific embodiment
With reference to the accompanying drawing and specific embodiment the present invention will be described in detail.
Embodiment 1
As shown in Figure 1, the present embodiment includes：
Electric machine casing 1, in being circumferentially with several shell oil grooves 11 in shell；
Stator 2 is arranged in electric machine casing 1, including stator core 21 and stator winding 22；In the stator core 21
Equipped with circumferential oil circuit 23, the circumferential direction oil circuit 23 is connected to each stator core slot, shell oil groove 11 respectively；
Stator winding 22 and circumferential 23 radial clearance of oil circuit arrangement are in the stator core slot so as to cold oil return.
The electric machine casing 1 is equipped with end cap 3 to form closing working space, prevents sundries from entering inside motor；It is described
End cap 3 is equipped with the oil return hole 31 being connected with external oil return line, and oil return hole 31 is used to export the cooling oil entered inside motor, knot
Internal sensor is closed to feed back internal cooling oil information, accurately to be controlled the cooling oil flowed into inside motor.
The setting of oil return hole 31 guarantees cold oil return in 3 bottom of end cap.
Preferably, the present embodiment is equipped with temperature sensor, and the external oil return line is equipped with cooling oil flow controller 4,
The cooling oil flow controller 4 is for judging the motor internal temperature information that temperature sensor is fed back, to control
Cooling oil stream amount in motor；When motor internal temperature is excessively high, the control of cooling oil flow controller 4, which increases, to be flowed into inside motor
Cooling oil, while the liquid level of cooling oil inside motor is monitored, prevent cooling oil liquid level excessively high；When motor internal temperature is normal
When, the control of cooling oil flow controller 4 reduces the cooling oil flowed into inside motor；By this method, motor cooling oil is realized
Flow control improves cooling efficiency
As depicted in figs. 1 and 2, in the present embodiment, the electric machine casing 1 is equipped with shell oil inlet 13 and shell oil outlet
14, shell oilhole 14 is the main path of cold oil return；The shell oil groove 11 with 2 contact surface of stator at be provided with oil groove oil
Hole 12, radial fuel feed hole 24 is correspondingly provided on the stator core 21, and the radial direction fuel feed hole 24 is connected with circumferential direction oil circuit 23；This
Electric machine casing 1 described in embodiment and stator core 21 are assembled using hot cover process, guarantee after elastic conjunction oil groove oilhole 12 with
The radial docking completely of fuel feed hole 24.
In the present embodiment, the corresponding stator core slot of circumferential direction oil circuit 23 is equipped with stator core slot fuel feed hole 231；Work as cooling
Oil by oil groove oilhole 12, radial fuel feed hole 24, circumferential oil circuit 23, stator core slot fuel feed hole 231 flow into stator winding 22 with
Between stator core slot behind gap, directly cooling, Homogeneouslly-radiating can be carried out to the biggish winding of calorific value.
It is emphasized that：The above is only presently preferred embodiments of the present invention, not make in any form to the present invention
Limitation, any simple modification, equivalent change and modification to the above embodiments according to the technical essence of the invention,
All of which are still within the scope of the technical scheme of the invention.
Claims (6)
1. a kind of motor stator oil air-cooled structure, which is characterized in that including：
Electric machine casing, in being circumferentially with several shell oil grooves in shell；
Stator is arranged in electric machine casing, including stator core and stator winding；Circumferential oil is equipped in the stator core
Road, the circumferential direction oil circuit are connected to each stator core slot, shell oil groove respectively；
Stator winding and circumferential oil circuit radial clearance arrangement are in the stator core slot so as to cold oil return.
2. motor stator oil air-cooled structure according to claim 1, characterized in that it is described circumferential direction oil circuit and stator core slot, around
Group gap while cooling to stator winding axially through synchronizing cooling to stator end.
3. motor stator oil air-cooled structure according to claim 1, characterized in that the electric machine casing is equipped with end cap, the end
It is covered with the oil return hole being connected with external oil return line.
4. motor stator oil air-cooled structure according to claim 3, characterized in that the oil return hole is arranged in end cap bottom.
5. motor stator oil air-cooled structure according to claim 1, characterized in that the electric machine casing and stator core are using warm
Cover technique assembly.
6. motor stator oil air-cooled structure according to claim 3, characterized in that the motor stator oil air-cooled structure is equipped with temperature
Sensor, the external oil return line are equipped with cooling oil flow controller, and the cooling oil flow controller is used to pass temperature
The motor internal temperature information of sensor feedback is judged, to control cooling oil stream amount in motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810802054.8A CN108880024A (en) | 2018-07-20 | 2018-07-20 | Motor stator oil air-cooled structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810802054.8A CN108880024A (en) | 2018-07-20 | 2018-07-20 | Motor stator oil air-cooled structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108880024A true CN108880024A (en) | 2018-11-23 |
Family
ID=64303983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810802054.8A Pending CN108880024A (en) | 2018-07-20 | 2018-07-20 | Motor stator oil air-cooled structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108880024A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110417170A (en) * | 2019-08-15 | 2019-11-05 | 广东合一新材料研究院有限公司 | A kind of high-speed motor with Spindle's heat emission structure |
| CN113852236A (en) * | 2020-06-28 | 2021-12-28 | 中车时代电动汽车股份有限公司 | Water-oil combined cooling electric automobile driving system and electric automobile |
| CN114285213A (en) * | 2021-12-29 | 2022-04-05 | 苏州汇川联合动力系统有限公司 | Motor and automobile |
| CN114295978A (en) * | 2021-12-27 | 2022-04-08 | 中克骆瑞新能源科技有限公司 | Oil-cooled motor for calibration test |
| CN117650668A (en) * | 2024-01-30 | 2024-03-05 | 江苏富天江电子电器有限公司 | Double-cooling motor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013013182A (en) * | 2011-06-28 | 2013-01-17 | Aisin Seiki Co Ltd | Cooling structure for motor |
| CN203482017U (en) * | 2013-06-28 | 2014-03-12 | 殷天明 | Direct cooling system for motor winding coil |
| CN106300779A (en) * | 2016-08-20 | 2017-01-04 | 宁波云控电气有限公司 | A kind of liquid-cooled motor and control device all-in-one thereof |
| CN107276266A (en) * | 2017-08-02 | 2017-10-20 | 华中科技大学 | A kind of two-way cooling oil-cooled motor |
| CN207234586U (en) * | 2017-08-24 | 2018-04-13 | 长城汽车股份有限公司 | Motor and vehicle |
-
2018
- 2018-07-20 CN CN201810802054.8A patent/CN108880024A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013013182A (en) * | 2011-06-28 | 2013-01-17 | Aisin Seiki Co Ltd | Cooling structure for motor |
| CN203482017U (en) * | 2013-06-28 | 2014-03-12 | 殷天明 | Direct cooling system for motor winding coil |
| CN106300779A (en) * | 2016-08-20 | 2017-01-04 | 宁波云控电气有限公司 | A kind of liquid-cooled motor and control device all-in-one thereof |
| CN107276266A (en) * | 2017-08-02 | 2017-10-20 | 华中科技大学 | A kind of two-way cooling oil-cooled motor |
| CN207234586U (en) * | 2017-08-24 | 2018-04-13 | 长城汽车股份有限公司 | Motor and vehicle |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110417170A (en) * | 2019-08-15 | 2019-11-05 | 广东合一新材料研究院有限公司 | A kind of high-speed motor with Spindle's heat emission structure |
| CN110417170B (en) * | 2019-08-15 | 2024-05-14 | 广东合一新材料研究院有限公司 | High-speed motor with main shaft heat radiation structure |
| CN113852236A (en) * | 2020-06-28 | 2021-12-28 | 中车时代电动汽车股份有限公司 | Water-oil combined cooling electric automobile driving system and electric automobile |
| CN113852236B (en) * | 2020-06-28 | 2023-03-24 | 中车时代电动汽车股份有限公司 | Water-oil combined cooling electric automobile driving system and electric automobile |
| CN114295978A (en) * | 2021-12-27 | 2022-04-08 | 中克骆瑞新能源科技有限公司 | Oil-cooled motor for calibration test |
| CN114285213A (en) * | 2021-12-29 | 2022-04-05 | 苏州汇川联合动力系统有限公司 | Motor and automobile |
| CN117650668A (en) * | 2024-01-30 | 2024-03-05 | 江苏富天江电子电器有限公司 | Double-cooling motor |
| CN117650668B (en) * | 2024-01-30 | 2024-03-29 | 江苏富天江电子电器有限公司 | Double-cooling motor |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181123 |