CN116647081B - Cooling and lubricating system of driving assembly and vehicle - Google Patents
Cooling and lubricating system of driving assembly and vehicle Download PDFInfo
- Publication number
- CN116647081B CN116647081B CN202310458137.0A CN202310458137A CN116647081B CN 116647081 B CN116647081 B CN 116647081B CN 202310458137 A CN202310458137 A CN 202310458137A CN 116647081 B CN116647081 B CN 116647081B
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- stator
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- 238000001816 cooling Methods 0.000 title claims abstract description 58
- 230000001050 lubricating effect Effects 0.000 title claims abstract description 17
- 238000004804 winding Methods 0.000 claims abstract description 29
- 230000005540 biological transmission Effects 0.000 claims description 62
- 238000005461 lubrication Methods 0.000 claims description 25
- 230000000149 penetrating effect Effects 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 1
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
-
- 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
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
-
- 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
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
-
- 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
- F16H57/042—Guidance of lubricant
- F16H57/0421—Guidance of lubricant on or within the casing, e.g. shields or baffles for collecting lubricant, tubes, pipes, grooves, channels or the like
- F16H57/0423—Lubricant guiding means mounted or supported on the casing, e.g. shields or baffles for collecting lubricant, tubes or pipes
-
- 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
- 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
- H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
-
- 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
-
- 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
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- General Details Of Gearings (AREA)
Abstract
The invention provides a cooling and lubricating system of a driving assembly and a vehicle, and relates to the technical field of vehicles, wherein the cooling and lubricating system of the driving assembly comprises a driving pump, a first distribution oil way and a second distribution oil way, and the driving pump is used for supplying oil to the first distribution oil way and the second distribution oil way; the first distribution oil way comprises a first branch, the first branch is arranged between the first shell and the stator, and an oil outlet of the first branch is used for supplying oil to the outer side of the winding of the stator; the second distribution oil path comprises a second branch, a third branch and a fourth branch, the second branch is arranged between the long half shaft and the hollow motor shaft, the third branch is arranged in the rotor and communicated with the second branch, and an oil outlet of the third branch is used for supplying oil to the inner side of the winding of the stator; the fourth branch is used for supplying oil to the interior of the second shell. The invention can effectively improve the cooling and lubricating effects on the driving assembly.
Description
Technical Field
The invention relates to the technical field of vehicles, in particular to a cooling and lubricating system of a driving assembly and a vehicle.
Background
The drive assembly is one of the important components of the vehicle, and generally comprises a motor assembly and a differential assembly, wherein in operation, the motor assembly drives two half shafts of the differential assembly to rotate, and a cooling and lubricating system is generally arranged for cooling and lubricating the drive assembly for the normal operation of the drive assembly.
However, the cooling and lubricating system based on the existing driving assembly may cause poor cooling and lubricating effects of the driving assembly. For example, in the coaxial driving assembly which is produced in mass in the market at present, a cooling oil pipe is adopted for cooling a motor stator, and the cooling effect is poor because the cooling oil pipe sprays downwards from the right upper direction of the stator; or the coaxially arranged drive assembly is cooled by spraying oil to the end plate of the rotor due to the fact that the half shaft and the motor shaft are concentric, so that the cooling effect is poor; or the differential shaft and the motor shaft are concentric, the differential is positioned higher than the eccentric arrangement, and lubrication of the differential is difficult.
Disclosure of Invention
The invention solves the problem of effectively improving the cooling and lubricating effects on the driving assembly.
In one aspect, the present invention provides a drive assembly cooling and lubrication system, the applied drive assembly including a motor assembly including a first housing, a rotor including a hollow motor shaft, and a stator including a second housing, a long half shaft, and a gear assembly disposed inside the second housing, the long half shaft penetrating the hollow motor shaft and connected to the gear assembly, the drive assembly cooling and lubrication system comprising:
The driving pump is used for supplying oil to the first distribution oil circuit and the second distribution oil circuit;
the first distribution oil way comprises a first branch, the first branch is arranged between the first shell and the stator, and an oil outlet of the first branch is used for supplying oil to the outer side of a winding of the stator;
The second distribution oil path comprises a second branch, a third branch and a fourth branch, the second branch is arranged between the long half shaft and the hollow motor shaft, the third branch is arranged in the rotor and is communicated with the second branch, and an oil outlet of the third branch is used for supplying oil to the inner side of the winding of the stator; the fourth branch is used for supplying oil to the inside of the second shell.
Optionally, the stator include stator core with set up respectively in the oil guide ring at stator core both ends, the oil guide ring connect stator core's one end with first casing interval sets up, the oil guide ring keep away from stator core's one end be equipped with the inner wall sealing connection's of first casing kink, first branch road includes oil groove and first oil storage chamber, first oil storage chamber by first casing stator core and corresponding the oil guide ring surrounds and forms, the oil-out of first oil storage chamber is used for to the oil supply of winding outside, the oil guide groove set up in stator core's lateral wall and intercommunication two first oil storage chamber.
Optionally, the rotor still include rotor core with set up respectively in the annular end plate at rotor core both ends, the third branch road includes first passageway, first annular oil storage chamber, stator inside cooling channel and play oil channel, first passageway runs through hollow motor shaft's lateral wall, first annular oil storage chamber set up in annular end plate with between the rotor core, go out the oil channel run through set up in on the annular end plate, two first annular oil storage chamber respectively through corresponding first passageway with the second branch road intercommunication, every annular end plate go out the oil channel through corresponding stator inside cooling channel with another annular end plate with go out oil storage chamber intercommunication between the rotor core, every go out the oil outlet of oil channel be used for to the oil supply of winding inboard.
Optionally, the driving assembly further comprises a transmission assembly, the transmission assembly comprises a first hollow transmission shaft rotatably arranged on the first shell and a second driven gear fixed on the second shell, a second latch is arranged on the first hollow transmission shaft, and the first hollow transmission shaft is in transmission connection with the second shell through the second latch and the second driven gear; the gear assembly comprises a half shaft gear and a planetary gear which are in meshed transmission, one half shaft gear is sleeved on the long half shaft, and the planetary gear is fixedly connected with the second shell; the fourth branch comprises a second channel and a third channel, the second channel is arranged between the long half shaft and the second driven gear, the third channel is arranged between the long half shaft and the half shaft gear, and an outlet of the third channel is communicated with the inside of the second shell.
Optionally, the driving assembly further comprises a housing covering the differential assembly, and the housing is in sealing connection with the first housing; the first distribution oil way further comprises an oil guide pipe, a fifth branch and a through hole penetrating through the second shell, the oil guide pipe is used for penetrating through the first hollow transmission shaft, the fifth branch is arranged in the shell wall of the shell, and the fifth branch is communicated with the oil guide pipe and the inside of the shell.
Optionally, the drive assembly further comprises a first hollow drive shaft front bearing and a differential front bearing; and two oil outlets of the fifth branch are respectively used for supplying oil to the front bearing of the first hollow transmission shaft and the front bearing of the differential mechanism.
Optionally, the drive assembly further comprises a first hollow drive shaft rear bearing; the driving assembly cooling and lubricating system further comprises a sixth branch, the sixth branch is arranged in the shell wall of the first shell, an oil inlet of the sixth branch is communicated with the oil guide pipe, and an oil outlet of the sixth branch is used for supplying oil to the rear bearing of the first hollow transmission shaft.
Optionally, the drive assembly still include with the second hollow transmission shaft that the hollow motor shaft is connected and the cover is located first driven gear on the first hollow transmission shaft, be equipped with first latch on the second hollow transmission shaft, the second hollow transmission shaft through first latch with first driven gear with first hollow transmission shaft transmission is connected, the drive assembly still includes backup pad and differential mechanism rear bearing, the backup pad set up in the second hollow transmission shaft with differential mechanism rear bearing, the second distribution oil circuit still includes seventh branch road and eighth branch road, the seventh branch road set up in the backup pad and with the drive pump intercommunication, the eighth branch road set up in between second hollow transmission shaft with the long semi-axis and with the second branch road intercommunication, three oil-out of seventh branch road are used for respectively to eighth branch road, second hollow transmission shaft with differential mechanism rear bearing supplies oil.
Optionally, the drive assembly cooling and lubrication system further comprises a suction filter in communication with the drive pump, the suction filter in communication with the first and third branches, respectively.
In a second aspect, the present invention provides a vehicle comprising a drive assembly cooling lubrication system as described above.
Compared with the prior art, the invention has the beneficial effects that:
When the driving pump supplies oil to the first distribution oil way and the second distribution oil way, part of oil flows through a first branch between the stator and the first shell of the motor assembly and supplies oil to the outer side of the winding of the stator so as to cool the outer side wall of the stator and the outer side of the winding; part of oil flows to a third branch in the rotor through the second branch to cool the rotor, and when the rotor works, the oil in the third branch is thrown to the outer side of a winding of the stator, so that the inner side of the winding of the stator is cooled; the oil liquid of the fourth branch flows into the second shell of the differential assembly so as to lubricate the gear assembly in the second shell; in summary, the cooling and lubricating system for the driving assembly can realize multidirectional cooling of the stator, cooling of the rotor from the inside of the rotor and lubrication of the internal gear assembly by supplying oil to the inside of the differential, so that the cooling and lubricating effects of the driving assembly are effectively improved.
Drawings
FIG. 1 is a schematic diagram of a cooling and lubrication system for a drive assembly according to an embodiment of the present invention;
FIG. 2 is a schematic flow path diagram of a cooling and lubrication system for a drive assembly according to an embodiment of the present invention;
Fig. 3 is a partial schematic view of a rotor according to an embodiment of the present invention.
Reference numerals illustrate:
1. A motor assembly; 11. a first housing; 12. a stator; 121. a stator core; 1211. a winding; 122. oil guiding ring; 13. a rotor; 131. a hollow motor shaft; 132. a rotor core; 133. an annular end plate; 134. a third branch; 1341. a first channel; 1342. a first annular oil storage chamber; 1343. a stator internal cooling passage; 1344. an oil outlet channel; 14. a first branch; 141. a first oil storage chamber; 142. an oil guiding groove; 15. a second branch; 16. a sixth branch; 17. an eighth branch; 18. a second hollow drive shaft; 181. a first latch; 19. a rear housing; 2. a differential assembly; 21. a gear assembly; 211. a side gear; 22. a second housing; 23. a long half shaft; 24. a short half shaft; 25. a fourth branch; 251. a second channel; 252. a third channel; 3. a first hollow drive shaft; 31. a second latch; 4. a first driven gear; 5. a housing; 51. a fifth branch; 52. a first hollow drive shaft rear bearing; 53. a differential front bearing; 54. a differential rear bearing; 55. a first hollow drive shaft front bearing; 6. a support plate; 61. a seventh branch; 7. a suction filter; 8. driving a pump; 9. an oil guide pipe; 10. and a second driven gear.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein.
In the prior art, the driving assembly comprises a motor assembly 1 and a differential mechanism assembly 2, wherein the motor assembly 1 comprises a first shell 11, a rotor 13 and a stator 12, the rotor 13 comprises a hollow motor shaft 131, the differential mechanism assembly 2 comprises a second shell 22, a long half shaft 23, a short half shaft 24 and a gear component 21 arranged in the second shell 22, the long half shaft 23 penetrates through the hollow motor shaft 131 and is connected with the gear component 21, and the short half shaft 24 is coaxially arranged with the long half shaft 23 and is connected with the gear component 21. In this way, the rotor 13 rotates, and the transmission assembly (described later) drives the second housing 22 of the differential assembly 2 to rotate, so as to drive the gear assembly 21 in the inner cavity of the second housing 22 to rotate, and finally drive the long half shaft 23 and the short half shaft 24 to rotate.
As shown in fig. 1 and 2, an embodiment of the present invention provides a cooling and lubrication system for a driving assembly, including a driving pump 8, a first distribution oil path and a second distribution oil path, the driving pump 8 is used for supplying oil to the first distribution oil path and the second distribution oil path, the first distribution oil path includes a first branch 14, the first branch 14 is disposed between a first housing 11 and a stator 12, and an oil outlet of the first branch 14 is used for supplying oil to an outside of a winding 1211 of the stator 12; the second distribution oil path comprises a second branch path 15, a third branch path 134 and a fourth branch path 25, the second branch path 15 is arranged between the long half shaft 23 and the hollow motor shaft 131, the third branch path 134 is arranged inside the rotor 13 and is communicated with the second branch path 15, and an oil outlet of the third branch path 134 is used for supplying oil to the inner side of the winding 1211 of the stator 12; the fourth branch 25 is for supplying oil to the inside of the second casing 22.
In this embodiment, as shown in fig. 2, when the driving pump 8 supplies oil to the first distribution oil path and the second distribution oil path, part of the oil flows upward to the first branch 14 between the stator 12 and the first housing 11 of the motor assembly 1, and supplies oil to the outside of the winding 1211 of the stator 12, so as to cool the outside wall of the stator 12 and the outside of the winding 1211; part of the oil flows to a third branch 134 in the rotor 13 through the second branch to cool the rotor 13, and when the rotor 13 works, the oil in the third branch 134 is thrown to the inner side of a winding 1211 of the stator 12, so that the inner side of the winding 1211 of the stator 12 is cooled; the oil of the fourth branch flows to the inside of the second casing 22 of the differential assembly 2 to lubricate the gear assembly 21 inside the second casing 22; in summary, the cooling and lubrication system for the driving assembly of the present invention can realize multidirectional cooling of the stator 12, cooling of the rotor 13 from the inside of the rotor 13, and lubrication of the internal gear assembly 21 by supplying oil to the inside of the differential, thereby effectively improving the cooling and lubrication effects of the driving assembly.
Optionally, the stator 12 includes a stator core 121 and oil guiding rings 122 disposed at two ends of the stator core 121, one end of the oil guiding rings 12 connected to the stator core 121 is disposed at intervals with the first housing 11, one end of the oil guiding ring 122 away from the stator core 121 is provided with a bending part hermetically connected to an inner wall of the first housing 11, the first branch 14 includes an oil guiding groove 142 and a first oil storage cavity 141, the first oil storage cavity 141 is formed by surrounding the first housing 11, the stator core 121 and the corresponding oil guiding rings 122, and an oil outlet of the first oil storage cavity 141 is used for supplying oil to the outside of the winding 1211, and the oil guiding groove 142 is disposed on an outer side wall of the stator core 121 and is communicated with the two first oil storage cavities 141.
As shown in fig. 1 and 2, the circumferential side wall of the oil guiding ring 122 is provided with a stepped structure along the axial direction, the circumferential side wall of the large ring of the oil guiding ring 122 is in sealing connection with the first shell 11, the axial end face of the small ring of the oil guiding ring 122 is in sealing connection with the stator core 121, at this time, a first oil storage cavity 141 is formed by surrounding the oil guiding ring 122, the stator core 121 and the first shell 11, the first oil storage cavity 141 is provided with an oil outlet arranged towards the outer side of the winding 1211 of the stator 12, the circumferential side wall of the stator core 121 is provided with a plurality of oil guiding grooves 142, and the oil guiding grooves 142 are used for communicating the left first oil storage cavity 141 and the right first oil storage cavity 141.
Thus, when the oil flows into the first oil storage chamber 141, the oil flows into the first oil storage chamber 141 on the right side, at this time, a part of the oil flows into the winding 1211 of the stator 12 through the oil outlet of the first oil storage chamber 141 on the right side, a part of the oil flows into the first oil storage chamber 141 on the left side through the oil guiding groove 142, and then flows into the winding 1211 of the stator 12 from the oil outlet of the first oil storage chamber 141 on the left side, thereby cooling the outer side wall, the left and right side ends of the stator 12 and the outer side of the winding 1211 of the stator 12.
In the present embodiment, the plurality of oil guide grooves 142 are uniformly distributed on the circumferential side wall of the stator core 121 along the circumferential direction of the stator 12. In this way, uniform cooling of the outer side wall of the stator core 121 is facilitated.
Optionally, the rotor 13 further includes a rotor core 132 and annular end plates 133 respectively disposed at two ends of the rotor core 132, the third branch 134 includes a first channel 1341, a first annular oil storage cavity 1342, a stator internal cooling channel 1343, and an oil outlet channel 1344, the first channel 1341 penetrates through a side wall of the hollow motor shaft 131, the first annular oil storage cavity 1342 is disposed between the annular end plate 133 and the rotor core 132, the oil outlet channel 1344 penetrates through the annular end plate 133, the two first annular oil storage cavities 1342 are respectively communicated with the second branch 15 through corresponding first channels 1341, the oil outlet channel 1344 of each annular end plate 133 is communicated with the first annular oil storage cavity 1342 between the other annular end plate 133 and the rotor core 132 through corresponding stator internal cooling channel 1343, and an oil outlet of each oil outlet channel 1344 is used for supplying oil to an inner side of the winding 1211.
In one embodiment, as shown in fig. 3, the side wall of the hollow motor shaft 131 is provided with two first channels 1341 arranged in the radial direction; the left end and the right end of the rotor core 132 are respectively provided with an annular end plate 133, each annular end plate 133 is downwards concave towards the end surface of the rotor core 132 to form a groove, a first annular oil storage cavity 1342 is formed between the groove and the rotor core 132 in a surrounding mode, two stator internal cooling channels 1343 are arranged in the rotor core 132, and each annular end plate 133 is provided with a penetrating oil outlet channel 1344; wherein, two first annular oil storage cavities 1342 are respectively communicated with the second branch 15 through corresponding first channels 1341, and an oil outlet channel 1344 of each annular end plate 133 is communicated with a first annular oil storage cavity 1342 between the other annular end plate 133 and the rotor core 132 through corresponding stator internal cooling channels 1343, and an oil outlet of each oil outlet channel 1344 is used for supplying oil to the inner side of the winding 1211.
In this way, the oil in the second branch 15 flows through the corresponding first channels 1341 to the two first annular oil storage cavities 1342, flows through the corresponding stator internal cooling channels 1343 to cool the interior of the rotor core 13, flows to the corresponding oil outlet channels 1344, and flows from the oil outlets of the oil outlet channels 1344 to the inner side of the windings 1211 of the stator 12, so as to cool the inner side of the windings 1211 of the stator 12.
Optionally, the driving assembly further comprises a transmission assembly, the transmission assembly comprises a first hollow transmission shaft 3 rotatably arranged on the first shell 11 and a second driven gear 10 fixed on the second shell 22, the first hollow transmission shaft 3 is provided with a second latch 31, and the first hollow transmission shaft 3 is in transmission connection with the second shell 22 through the second latch 31 and the second driven gear 10; the gear assembly 21 comprises a half-shaft gear 211 and a planetary gear 212 which are meshed and driven, wherein one half-shaft gear 211 is sleeved on the long half shaft 23, and the planetary gear 212 is fixedly connected with the second shell 22; the fourth branch 25 includes a second passage 251 and a third passage 252, the second passage 231 is provided between the long half shaft 23 and the second driven gear 10, the third passage 252 is provided between the long half shaft 23 and the side gear 211, and an outlet of the third passage 252 communicates with the inside of the second housing 22.
As shown in fig. 1, the first hollow transmission shaft 3 is in transmission connection with the second housing 22 through the second latch 31 and the second driven gear 10; the gear assembly 21 includes two planetary gears 212 and two side gears 211, the two side gears 211 are respectively engaged with the two planetary gears 212, one side gear 211 is sleeved on the long half shaft 23, the other side gear 211 is sleeved on the short half shaft 24, and the planetary gears 212 are fixed on the second housing 22. Thus, the hollow motor shaft 131 rotates, the first hollow transmission shaft 3 can rotate relative to the first housing 11 through the transmission of the first latch 181 and the first driven gear 4, and then the second housing 22 is driven to rotate through the transmission of the second latch 31 and the second driven gear 10, and the planetary gears 212 can drive the long half shaft 22 and the short half shaft 24 to rotate through the transmission of the half shaft gear 211 due to the fixed connection of the planetary gears 212 of the gear assembly 21 and the second housing 22.
It will be appreciated that the axle shaft 23 is splined to the side gear 211, and that when oil is to be transferred in the axial direction of the axle shaft 23 toward the interior of the second housing 22, the internal splines of the side gear 211 remove at least one tooth to form a third passage 252 for oil to enter the differential cavity directly, i.e., a third passage 252 is provided between the axle shaft 23 and the side gear 211.
Meanwhile, the long half shaft 23 penetrates through the second driven gear 10, so that oil flows to the half shaft gear 211 conveniently, a second channel 251 is arranged between the long half shaft 23 and the second driven gear 10, and the oil flows to the third channel 252 after passing through the second channel 251. In this way, oil supply in the axial direction of the long half shaft 23 toward the inside of the second housing 22 is facilitated.
Further, a screw groove is formed at one end of the long half shaft 23 near the side gear 211, so that oil can be introduced into the side gear 211.
Optionally, the driving assembly further comprises a housing 5 covering the differential assembly 2, and the housing 5 is in sealing connection with the first housing 11; the first distribution oil way further comprises an oil guide pipe 9, a fifth branch 51 and a through hole penetrating through the second shell 22, the oil guide pipe 9 is used for penetrating through the first hollow transmission shaft 3, the fifth branch 51 is arranged in the shell wall of the shell 5, and the fifth branch 51 is communicated with the oil guide pipe 9 and the inside of the shell 5.
It will be appreciated that as shown in fig. 1 and 2, the drive assembly further includes a housing 5, the housing 5 being sealingly connected to the first housing 11, the housing 5 housing the first hollow drive shaft 3, the drive assembly and the differential assembly 2. Thus, not only is it convenient to protect the first hollow drive shaft 3, the drive component and the differential assembly 2, but also oil leakage can be prevented.
As shown in fig. 1 and 2, the oil conduit 9 is a hard tube, which is fixed on the first housing 11 and penetrates through the first hollow transmission shaft 3, a fifth branch 51 is arranged in the wall of the housing 5, the fifth branch 51 communicates between the oil conduit 9 and the interior of the housing 5, and a through hole penetrating through the second housing 22 is arranged. Thus, not only the external oil inlet is reduced, but also the oil inlet path in the second casing 22 is increased, and oil is fed into the second casing 22 by matching with the fourth branch 25, so that the gear assembly 21 assembly of the differential assembly 2 is fully lubricated.
Meanwhile, the gear assembly 21 of the differential assembly 2 does not rely on oil stirring splash lubrication, and adopts a direct spraying mode from a through hole formed in the second shell 22, so that the gear assembly 21 can be effectively lubricated when the vehicle is inclined towards the motor side, and dragging loss caused by oil stirring is avoided.
As shown in fig. 1 and 2, the drive assembly further includes a first hollow drive shaft front bearing 55 and a differential front bearing 53; the two oil outlets of the fifth branch 51 supply oil to the first hollow propeller shaft front bearing 55 and the differential front bearing 53, respectively. Thus, the oil of the oil guide pipe 9 flows to the first hollow propeller shaft front bearing 55 and the differential front bearing 53 to lubricate the first hollow propeller shaft front bearing 55 and the differential front bearing 53.
As shown in fig. 1 and 2, the drive assembly further includes a first hollow drive shaft rear bearing 52; the first distribution oil path further comprises a sixth branch 16, the sixth branch 16 is arranged in the shell wall of the first shell 11, an oil inlet of the sixth branch 16 is communicated with the oil guide pipe 9, and an oil outlet of the sixth branch 16 is used for supplying oil to the first hollow transmission shaft rear bearing 52. Thus, a portion of the oil in the oil conduit 9 flows to the sixth branch 16 to lubricate the first hollow drive shaft rear bearing 52.
As shown in fig. 1 and 2, the transmission assembly further comprises a second hollow transmission shaft 18 connected with the hollow motor shaft and a first driven gear 4 sleeved on the first hollow transmission shaft 3, a first latch 181 is arranged on the second hollow transmission shaft 18, and the second hollow transmission shaft 18 is in transmission connection with the first hollow transmission shaft 3 through the first latch 181 and the first driven gear 4; the drive assembly further comprises a support plate 6 and a differential rear bearing 54, the support plate 6 is arranged between the second hollow transmission shaft 18 and the second driven gear 10, the second distribution oil way further comprises a seventh branch 61 and an eighth branch 17, the seventh branch 61 is arranged in the support plate 6 and communicated with the drive pump 8, the eighth branch 17 is arranged between the second hollow transmission shaft 18 and the long half shaft and communicated with the second branch, and three oil outlets of the seventh branch 61 are respectively used for supplying oil to the eighth branch 17, the second hollow transmission shaft 18 and the differential rear bearing 54.
Thus, after the oil enters the seventh branch 61, a part of the oil flows to the second branch 15 through the eighth branch 17; a part of the oil flows to the second hollow transmission shaft 18 so as to lubricate the junction of the first latch 181 and the first driven gear 4; a portion of the oil flows to the differential rear bearing 54 to supply oil to lubricate the differential rear bearing 54.
Optionally, the drive assembly cooling and lubrication system further comprises a suction filter 7 in communication with the drive pump 8, the suction filter 7 being in communication with the first branch 14, the third branch, respectively.
In this embodiment, the driving pump 8 is an electronic oil pump, as shown in fig. 1 and 2, the oil passing through the first branch 14 and the third branch 134 finally flows to the bottom of the first housing 11, and the suction filter 7 communicates with the inside of the first housing 11 and the driving pump 8. Thus, the driving pump 8 works to convey the oil liquid in the suction filter 7 to the first distribution oil path and the second distribution oil path, and after cooling and lubricating the driving assembly, the oil liquid is converged to the bottom in the first shell 11 and finally flows back to the suction filter 7.
Optionally, the driving assembly further includes a rear housing 19, the rear housing 19 is in sealing connection with the first housing 11, the rear housing 19 and the outer housing 5 are respectively disposed on two opposite sides of the first housing 11, and the first distribution oil path flows into the rear housing 19 to supply oil to bearings, bushings, splines and the like in the rear housing 19, so that lubrication is achieved.
In a second aspect, another embodiment of the invention provides a vehicle comprising a drive assembly cooling lubrication system as described above.
The vehicle of the embodiment has the same beneficial effects as the cooling and lubrication system of the driving assembly compared with the prior art, and therefore, the description thereof is omitted.
The reader will appreciate that in the description of this specification, a description of terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
Although the invention is disclosed above, the scope of the invention is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications will fall within the scope of the invention.
Claims (7)
1. The utility model provides a drive assembly cooling and lubricating system, the drive assembly who uses includes motor assembly (1), differential mechanism assembly (2), drive assembly and cover establish shell (5) of differential mechanism assembly (2), motor assembly (1) include first casing (11), rotor (13) and stator (12), rotor (13) include hollow motor shaft (131), shell (5) with first casing (11) sealing connection, differential mechanism assembly (2) include second casing (22), long semi-axis (23) and set up in gear assembly (21) of second casing (22) inside, long semi-axis (23) wear to locate hollow motor shaft (131) and with gear assembly (21) are connected, drive assembly includes rotate set up in first hollow transmission shaft (3) on first casing (11), be fixed in second driven gear (10) on second casing (22), with second hollow transmission shaft (18) and cover that hollow motor shaft (131) are connected locate first hollow transmission shaft (3) are equipped with hollow transmission shaft (3), the first hollow transmission shaft (3) is in transmission connection with the second shell (22) through the second latch (31) and the second driven gear (10); the gear assembly (21) comprises a half shaft gear (211) and planetary gears (212) which are meshed and driven, one half shaft gear (211) is sleeved on the long half shaft (23), the planetary gears (212) are fixedly connected with the second shell (22), a first clamping tooth (181) is arranged on the second hollow transmission shaft (18), and the second hollow transmission shaft (18) is in transmission connection with the first hollow transmission shaft (3) through the first clamping tooth (181) and the first driven gear (4); the drive assembly further comprises a support plate (6) and a differential rear bearing (54), wherein the support plate (6) is arranged between the second hollow transmission shaft (18) and the differential rear bearing (54), and the drive assembly cooling and lubricating system is characterized by comprising a drive pump (8), a first distribution oil way and a second distribution oil way, and the drive pump (8) is used for supplying oil to the first distribution oil way and the second distribution oil way;
The first distribution oil way comprises a first branch (14), an oil guide pipe (9), a fifth branch (51) and a through hole penetrating through the second shell (22), the first branch (14) is arranged between the first shell (11) and the stator (12), and an oil outlet of the first branch (14) is used for supplying oil to the outer side of a winding (1211) of the stator (12); the oil guide pipe (9) is used for penetrating through the first hollow transmission shaft (3), the fifth branch (51) is arranged in the shell wall of the shell (5), and the fifth branch (51) is communicated with the oil guide pipe (9) and the inside of the shell (5);
The second distribution oil path comprises a second branch path (15), a third branch path (134), a fourth branch path (25), a seventh branch path (61) and an eighth branch path (17), the second branch path (15) is arranged between the long half shaft (23) and the hollow motor shaft (131), the third branch path (134) is arranged in the rotor (13) and is communicated with the second branch path (15), and an oil outlet of the third branch path (134) is used for supplying oil to the inner side of a winding (1211) of the stator (12); the fourth branch (25) is used for supplying oil to the inside of the second shell (22), the fourth branch (25) comprises a second channel (251) and a third channel (252), the second channel (251) is arranged between the long half shaft (23) and the second driven gear (10), the third channel (252) is arranged between the long half shaft (23) and the half shaft gear (211), and an outlet of the third channel (252) is communicated with the inside of the second shell (22); the seventh branch (61) is arranged in the supporting plate (6) and is communicated with the driving pump (8), the eighth branch (17) is arranged between the second hollow transmission shaft (18) and the long half shaft (23) and is communicated with the second branch (15), and three oil outlets of the seventh branch (61) are respectively used for supplying oil to the eighth branch (17), the second hollow transmission shaft (18) and the rear differential bearing (54).
2. The drive assembly cooling and lubrication system according to claim 1, wherein the stator (12) comprises a stator core (121) and oil guiding rings (122) respectively arranged at two ends of the stator core (121), the oil guiding rings (12) are connected with one end of the stator core (121) and the first housing (11) at intervals, one end of the oil guiding rings (122) away from the stator core (121) is provided with a bending part in sealing connection with the inner wall of the first housing (11), and the drive assembly cooling and lubrication system is characterized in that the first branch (14) comprises an oil guiding groove (142) and a first oil storage cavity (141), the first oil storage cavity (141) is formed by encircling the first housing (11), the stator core (121) and the corresponding oil guiding rings (122), and the oil outlet of the first oil storage cavity (141) is used for supplying oil to the outer side of the winding (1211), and the oil guiding groove (142) is arranged on the outer side wall of the stator core (121) and is communicated with the two first oil storage cavities (141).
3. The drive assembly cooling and lubrication system according to claim 1, wherein the rotor (13) further comprises a rotor core (132) and annular end plates (133) respectively arranged at two ends of the rotor core (132), and the drive assembly cooling and lubrication system is characterized in that the third branch (134) comprises a first channel (1341), a first annular oil storage cavity (1342), a stator internal cooling channel (1343) and an oil outlet channel (1344), the first channel (1341) penetrates through the side wall of the hollow motor shaft (131), the first annular oil storage cavity (1342) is arranged between the annular end plate (133) and the rotor core (132), the oil outlet channel (1344) penetrates through the annular end plate (133), two first annular oil storage cavities (1342) are respectively communicated with the second branch (15) through the corresponding first channel (1341), the oil outlet channel (1344) of each annular end plate (133) is communicated with the other annular end plate (132) through the corresponding stator internal cooling channel (1343) for oil to the oil outlet of the annular end plate (1342).
4. The drive assembly cooling and lubrication system of claim 1, further comprising a first hollow drive shaft front bearing (55) and a differential front bearing (53); the differential is characterized in that two oil outlets of the fifth branch (51) supply oil to the front bearing (55) of the first hollow transmission shaft and the front bearing (53) of the differential respectively.
5. The drive assembly cooling and lubrication system of claim 1, further comprising a first hollow drive shaft rear bearing (52); the first distribution oil way is characterized by further comprising a sixth branch circuit (16), wherein the sixth branch circuit (16) is arranged in the shell wall of the first shell (11), an oil inlet of the sixth branch circuit (16) is communicated with the oil guide pipe (9), and an oil outlet of the sixth branch circuit (16) is used for supplying oil to the rear bearing (52) of the first hollow transmission shaft.
6. The drive assembly cooling and lubrication system according to claim 1, further comprising a suction filter (7) in communication with the drive pump (8), the suction filter (7) being in communication with the first branch (14) and the third branch (134), respectively.
7. A vehicle comprising a drive assembly cooling and lubrication system as claimed in any one of claims 1 to 6.
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| CN202310458137.0A CN116647081B (en) | 2023-04-25 | 2023-04-25 | Cooling and lubricating system of driving assembly and vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310458137.0A CN116647081B (en) | 2023-04-25 | 2023-04-25 | Cooling and lubricating system of driving assembly and vehicle |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114142638A (en) * | 2021-12-14 | 2022-03-04 | 南京邦奇自动变速箱有限公司 | Integrated cooling and lubricating system for electric drive assembly |
| CN114679001A (en) * | 2022-02-11 | 2022-06-28 | 浙江吉利控股集团有限公司 | A powertrain and vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4096858B2 (en) * | 2002-10-23 | 2008-06-04 | 日産自動車株式会社 | Cooling device for electric motor for vehicle |
| CN216306680U (en) * | 2021-08-20 | 2022-04-15 | 重庆青山工业有限责任公司 | Cooling and lubricating structure of reduction gearbox of pure electric oil-cooled motor |
| CN115163803B (en) * | 2022-07-04 | 2025-05-16 | 浙江极氪智能科技有限公司 | Electric drive assembly lubrication cooling system and vehicle |
| CN115264038B (en) * | 2022-07-19 | 2025-07-15 | 东风汽车集团股份有限公司 | A cooling and lubricating device, a hybrid power drive system and a vehicle |
| CN115214327A (en) * | 2022-09-01 | 2022-10-21 | 浙江极氪智能科技有限公司 | Electric driving device for automobile |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114142638A (en) * | 2021-12-14 | 2022-03-04 | 南京邦奇自动变速箱有限公司 | Integrated cooling and lubricating system for electric drive assembly |
| CN114679001A (en) * | 2022-02-11 | 2022-06-28 | 浙江吉利控股集团有限公司 | A powertrain and vehicle |
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Effective date of registration: 20240529 Address after: No. 98 Beihui Road, Huishan Industrial Transformation and Agglomeration Zone, Wuxi City, Jiangsu Province, China Applicant after: Wuxi Xingqu Power Technology Co.,Ltd. Country or region after: China Applicant after: Wuxi Xingqu Technology Co.,Ltd. Address before: No. 99, Beihui Road, Huishan District, Wuxi City, Jiangsu Province, 214181 Applicant before: Wuxi Xingqu Power Technology Co.,Ltd. Country or region before: China Applicant before: Wuxi Xingqu Technology Co.,Ltd. Applicant before: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd. |
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