CN115021495A - Electric drive speed changer motor and cooling and lubricating device of transmission gear thereof - Google Patents
Electric drive speed changer motor and cooling and lubricating device of transmission gear thereof Download PDFInfo
- Publication number
- CN115021495A CN115021495A CN202210734194.2A CN202210734194A CN115021495A CN 115021495 A CN115021495 A CN 115021495A CN 202210734194 A CN202210734194 A CN 202210734194A CN 115021495 A CN115021495 A CN 115021495A
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- CN
- China
- Prior art keywords
- cooling
- spray pipe
- motor
- pipe
- stator
- 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
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control
- F16H57/0435—Pressure control for supplying lubricant; Circuits or valves therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0456—Lubrication by injection; Injection nozzles or tubes therefor
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- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention relates to an electric drive transmission motor and a cooling and lubricating device of a transmission gear thereof, which comprises a stator, a stator winding, a rotor, a motor transmission gear and a middle connecting plate, wherein a spray frame is fixedly arranged on the middle connecting plate and comprises an oil guide pipe, a cooling spray pipe and a lubricating spray pipe, spray holes are formed in the cooling spray pipe and the lubricating spray pipe, the spray frame is fixedly arranged on the middle connecting plate through the oil guide pipe, so that the cooling spray pipe is positioned above the periphery of the stator, and the lubricating spray pipe is positioned on the side surface of the meshing part of the motor transmission gear; and a guide plate is fixedly arranged on the stator and is positioned above the periphery of the stator winding and below the front end of the cooling spray pipe. The invention can carry out fine cooling control on the motor stator and the stator winding and can actively lubricate the transmission gear of the motor.
Description
Technical Field
The invention relates to a cooling and lubricating device of an electrically-driven transmission, in particular to a cooling and lubricating device of an electric motor of the electrically-driven transmission and a transmission gear of the electrically-driven transmission.
Background
With the development and upgrading of hybrid new energy vehicles, the requirements of the motor used in the whole vehicle on parameters such as power torque and the like are higher and higher, which puts more stringent requirements on the heat dissipation and cooling of the motor, especially the motor winding in the electric drive transmission. In practical engineering application, if a scheme similar to an engine water jacket structure is adopted to cool the motor winding, the design structure is very complicated, and the cooling effect is not ideal. Therefore, the cooling and heat dissipation of the winding are usually realized by directly spraying the motor winding through the spray pipe. The oil injection cooling mode generally needs to arrange a plurality of oil rails, cut round holes with different angles on the oil rails to serve as spray holes, and perform spray cooling on the motor stator and the winding thereof along a set track and a set drop point.
Since the stator winding of the motor does not rotate during operation of the vehicle, the optimal spray cooling arrangement is to uniformly spray the entire stator and its windings with the oil. However, in practical applications, the arrangement of the nozzles has the following limitations: 1) with increasingly strict requirements on oil consumption and energy consumption, the weight and size constraints of the transmission are further strengthened, and the number and the length of the oil injection rails are also limited during arrangement; 2) with the reduction of the size of the transmission, the requirement on the utilization rate of the internal space is higher, and the sprayed oil bundles can be blocked by other parts and cannot be randomly arranged in the circumferential direction of the motor; 3) in order to improve the efficiency of the transmission, the filling amount of engine oil in the transmission is limited and even reduced on the original basis. In this case, the oil flow for spraying the motor and the winding thereof is also reduced, which requires an increase in the spraying utilization of the winding oil to avoid meaningless oil consumption.
Disclosure of Invention
The invention aims to provide a cooling and lubricating device for a motor of an electrically-driven transmission and a transmission gear of the electrically-driven transmission, which can perform fine cooling control on a stator and a stator winding of the motor and can perform active lubrication on the transmission gear of the motor.
The invention relates to an electrically-driven transmission motor and a cooling and lubricating device of a transmission gear of the electrically-driven transmission motor, which comprise a stator, a stator winding, a rotor, a motor transmission gear and a middle connecting plate, wherein a spray frame is fixedly arranged on the middle connecting plate and comprises an oil guide pipe, a cooling spray pipe and a lubricating spray pipe, the cooling spray pipe and the lubricating spray pipe are respectively communicated with the oil guide pipe, an oil inlet hole is formed in the oil guide pipe, spray holes are formed in the cooling spray pipe and the lubricating spray pipe, the spray frame is fixedly arranged on the middle connecting plate through the oil guide pipe, so that the cooling spray pipe is positioned above the periphery of the stator, and the lubricating spray pipe is positioned on the side surface of the meshing part of the motor transmission gear; the stator is fixedly provided with a guide plate, the guide plate is arc-shaped and provided with guide holes, and the guide plate is positioned above the periphery of the stator winding and below the front end of the cooling spray pipe.
The cooling spray pipe and the lubricating spray pipe are both vertical to the oil guide pipe, and the cooling spray pipe is arranged in a circular arc shape matched with the stator.
The guide plate is longitudinally provided with a longitudinal guide groove, and the guide hole is positioned in the longitudinal guide groove.
And transverse diversion trenches are transversely arranged on the diversion plate to separate the longitudinal diversion trenches.
The oil inlet hole on the oil guide pipe is communicated with the main oil duct of the electrically-driven transmission, engine oil in the main oil duct enters the oil guide pipe under the action of an oil pressure pump and then enters the cooling spray pipe and the lubricating spray pipe, the engine oil sprayed out of the spray hole on the cooling spray pipe cools the motor stator, the engine oil sprayed out of the spray hole at the front end of the cooling spray pipe is sprayed onto the guide plate and flows to the stator winding through the longitudinal guide groove, the transverse guide groove and the guide hole on the guide plate to cool the stator winding; the engine oil sprayed out from the spray holes on the lubricating spray pipe lubricates the transmission gear of the motor.
Because the plurality of cooling spray pipes are arranged above the periphery of the motor stator and the lubricating spray pipe is arranged on the side surface of the meshing part of the motor transmission gear, the motor stator and the stator winding can be finely cooled and controlled, and the transmission gear of the motor can be actively lubricated; the arrangement of the guide plate improves the direct contact area of the stator winding and the cooling engine oil, increases the spraying area of the engine oil by about 13 percent, increases the spraying uniformity of the engine oil by about 29 percent, and reduces the temperature unevenness on the stator winding.
Drawings
Fig. 1 and 2 are isometric views of the present invention.
Fig. 3 is an isometric view of a baffle.
Fig. 4 is an enlarged view at M in fig. 3.
Fig. 5 is an isometric view of a spray stand.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, the cooling and lubricating device for the motor and the transmission gear of the electrically-driven transmission comprises a stator 3, a stator winding 1, a rotor 5, a motor transmission gear 6 and a middle connecting plate (not shown in the figure), wherein a spray frame 2 is fixedly installed on the middle connecting plate, as shown in fig. 5, the spray frame 2 comprises an oil guide pipe 24, four cooling spray pipes 22 and a lubricating spray pipe 25, the cooling spray pipes 22 and the lubricating spray pipe 25 are respectively communicated with the oil guide pipe 24 and are vertical to the oil guide pipe 24, an oil inlet hole 23 is formed in the oil guide pipe 24, spray holes 21 are formed in the cooling spray pipes 22 and the lubricating spray pipes 25, the spray frame 2 is fixedly installed on the middle connecting plate through the oil guide pipe 24, the four cooling spray pipes 22 are located above the periphery of the stator 3 and are arranged in an arc shape matched with the stator 3, and the lubricating spray pipes 25 are located on the side face of the meshing position of the motor transmission gear 6. As shown in fig. 3 and 4, the guide plate 4 is fixed on the stator 3 through the mounting lug 42, and as shown in fig. 3 and 4, the guide plate 4 is arc-shaped and is located above the periphery of the stator winding 1 and below the front end of the cooling spray pipe 22, a longitudinal guide groove 43 is longitudinally formed in the guide plate 4, a guide hole 44 is formed in the longitudinal guide groove 43, and a transverse guide groove 41 is transversely formed in the guide plate 4 to separate the longitudinal guide groove 43.
An oil inlet 23 on an oil guide pipe 24 is communicated with a main oil duct of an electrically-driven transmission, engine oil in the main oil duct enters the oil guide pipe 24 under the action of an oil pressure pump and then enters a cooling spray pipe 22 and a lubricating spray pipe 25, the engine oil sprayed out from a spray hole 21 on the cooling spray pipe 22 cools a motor stator 3, the engine oil sprayed out from the spray hole 21 at the front end of the cooling spray pipe 22 is sprayed onto a guide plate 4 and flows to a stator winding 1 through a longitudinal guide groove 43, a transverse guide groove 41 and a guide hole 44 on the guide plate 4 to cool the stator winding 1; the motor transmission gear 6 is lubricated by the engine oil sprayed from the spray holes 21 on the lubricating spray pipe 25.
Claims (4)
1. Electric drive derailleur motor and drive gear's cooling and lubrication device thereof, including stator (3), stator winding (1), rotor (5), motor drive gear (6) and well yoke plate, its characterized in that: a spray frame (2) is fixedly arranged on the middle yoke plate and comprises an oil guide pipe (24), a cooling spray pipe (22) and a lubricating spray pipe (25), the cooling spray pipe and the lubricating spray pipe are respectively communicated with the oil guide pipe, an oil inlet hole (23) is formed in the oil guide pipe, spray holes (21) are formed in the cooling spray pipe and the lubricating spray pipe, the spray frame is fixedly arranged on the middle yoke plate through the oil guide pipe, so that the cooling spray pipe is positioned above the periphery of the stator, and the lubricating spray pipe is positioned on the side face of the meshing part of the motor transmission gear; a guide plate (4) is fixedly arranged on the stator, the guide plate is arc-shaped, guide holes (44) are formed in the guide plate, and the guide plate is positioned above the periphery of the stator winding and below the front end of the cooling spray pipe.
2. The cooling and lubrication device for the motor and the transmission gear of the electrically-driven transmission according to claim 1, wherein: the cooling spray pipe (22) and the lubricating spray pipe (25) are both vertical to the oil guide pipe (24), and the cooling spray pipe is arranged in an arc shape matched with the stator (3).
3. The cooling and lubricating device for the motor and the transmission gear of the electrically-driven transmission according to claim 1 or 2, characterized in that: the guide plate (4) is longitudinally provided with a longitudinal guide groove (43), and the guide hole (44) is positioned in the longitudinal guide groove.
4. The cooling and lubrication device for the motor and the transmission gear of the electrically-driven transmission according to claim 3, wherein: and the guide plate (4) is transversely provided with a transverse guide groove (41) for separating the longitudinal guide grooves (43).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210734194.2A CN115021495A (en) | 2022-06-27 | 2022-06-27 | Electric drive speed changer motor and cooling and lubricating device of transmission gear thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210734194.2A CN115021495A (en) | 2022-06-27 | 2022-06-27 | Electric drive speed changer motor and cooling and lubricating device of transmission gear thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115021495A true CN115021495A (en) | 2022-09-06 |
Family
ID=83077097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210734194.2A Pending CN115021495A (en) | 2022-06-27 | 2022-06-27 | Electric drive speed changer motor and cooling and lubricating device of transmission gear thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115021495A (en) |
-
2022
- 2022-06-27 CN CN202210734194.2A patent/CN115021495A/en active Pending
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