CN204367888U - Vehicle electric drive system - Google Patents
Vehicle electric drive system Download PDFInfo
- Publication number
- CN204367888U CN204367888U CN201420734894.2U CN201420734894U CN204367888U CN 204367888 U CN204367888 U CN 204367888U CN 201420734894 U CN201420734894 U CN 201420734894U CN 204367888 U CN204367888 U CN 204367888U
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- Prior art keywords
- housing
- electric drive
- vehicle electric
- drive system
- motor
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- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- General Details Of Gearings (AREA)
Abstract
The utility model relates to a kind of vehicle electric drive system (1), comprise housing (2) and motor (3), described motor (3) is coupled to diff (5) and outputting power via driving device (4), the stator (6) of described motor (3) surrounds rotor (7), described rotor (7) is fixed on rotor shaft (10), described rotor shaft (10) is arranged on described housing (2) via the clutch shaft bearing (8) and the second bearing (9) being positioned at its two ends, described stator (6) and housing (2) are not in contact with each other, described stator (6) outside is provided with cooling jacket (31), described cooling jacket (31) is fixed on described housing (2).Thus, make full use of the space between stator (6) and housing (2), at stator (6) outer setting cooling jacket (31), effectively can promote that motor (3) dispels the heat, and because stator (6) and housing (2) are not in contact with each other, the vibration & noise of electric transmission system can be significantly reduced.
Description
Technical field
The utility model relates to electric drive system, particularly relates to a kind of electric drive system for vehicle.
Background technology
In the electric drive system of vehicle, under normal circumstances, because motor is integrated with drive system, therefore easily produce vibration & noise, the heat radiation of motor is also comparatively difficult, does not also have highly effective method to reduce vibration at present and reduces noise.In conventional motor, stator and housing contact with each other, or only adopt insulating material to carrying out stator and housing separates, even if the stator in some motors does not contact with housing, space between stator and housing is also very little, thus causes stronger vibration passing, and causes larger noise, on the other hand, the small space between stator and housing is also extremely unfavorable for heat radiation.Meanwhile, the orthodox method of the movable parts of drive system being carried out to lubrication and cooling arranges pump in addition, thereby increases the manufacturing cost of drive system, reduce drive efficiency.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of vehicle electric drive system, vibration can be reduced and reduce noise, increase the radiating effect of motor, and improve driving efficiency, lubrication and cooling requirement can also be met simultaneously, also there is the advantage that structure is simple, reliable and manufacturing cost is lower simultaneously.
For solving the problems of the technologies described above, vehicle electric drive system of the present utility model, comprise housing and motor, motor is coupled to diff and outputting power via driving device, the stator surrounding rotor of motor, and rotor is fixed on rotor shaft, rotor shaft is arranged on housing via the clutch shaft bearing and the second bearing being positioned at its two ends, stator and housing are not in contact with each other, and stator exterior is provided with cooling jacket, and cooling jacket is fixed on housing.Thus, make full use of the space between stator and housing, cooling jacket is set at stator exterior, effectively can promote motor radiating, and be not in contact with each other due to stator and housing, the vibration & noise of electric transmission system can be significantly reduced.
More preferably, the axial two ends of cooling jacket are respectively arranged with the first contact sleeve and the second contact sleeve, for described cooling jacket is fixed on housing.Owing to have employed the first contact sleeve and the form of the second contact sleeve that axial two ends arrange, make cooling jacket can be fixed on housing by the first tangential contact sleeve at its axial two ends and the second contact sleeve, can reliably realize fixing to cooling jacket, can make again to keep gap between cooling jacket and housing wall, thus reduce the vibration & noise of electric transmission system.
More preferably, driving device comprises at least one and is arranged on compound planet gear on planetary gear carrier and Cylinder Gear wheels; The sun gear of compound planet gear is connected with transmitting torque with the rotor shaft of described motor, and planetary gear carrier is connected with Cylinder Gear wheels with the tween drive shaft of driving device respectively; The cylindrical wheel of the mouth of Cylinder Gear wheels is coupled with diff, and diff arranges two semiaxis as mouth to drive vehicle.Owing to have employed compound planet gear, the major advantage of Planetary Gear Transmission is that volume is little, and load-carrying capacity is large, stable working, can be embodied in vehicle electric drive system of the present invention, especially contribute to reducing vibration and reducing noise, and keep larger output torque and power simultaneously.
More preferably, the gear of compound planet gear and Cylinder Gear wheels is helical wheel.Helical wheel have vibration little, noise is low, energy-conservation height, reliability and durability, bears the advantage that overload capacity is high, thus contribute to reduce vibration and reduce noise.
More preferably, rotor shaft is provided with toothed wheel, for coordinating with speed sensor to determine spinner velocity.Thus, more accurately can control spinner velocity, ensure the smooth working of electric transmission system, thus contribute to reducing vibration and reducing noise.
More preferably, toothed wheel is along the clutch shaft bearing being axially set in motor output end of rotor shaft, between the second bearing and the sun gear of compound planet gear.Adopt bearing to reduce friction, contribute to reducing vibration and reducing noise.More preferably, the hollow gear of compound planet gear is arranged on housing actively by link.More preferably, link is provided with recessed and hole slot.Above-mentioned improvement can reduce vibration better and reduce noise.
Further, oil circuit is provided with in the housing of vehicle electric drive system for lubrication and/or each parts of cooling vehicle electric drive system; The both sides of housing form sealing by the first housing side cover and the second housing side cover corresponding thereto; Enclosure interior is provided with oil pan tray, for oil circuit oil storage, and coordinates with the cylindrical wheel in Cylinder Gear wheels, for oil to be supplied to the upper space of housing from oil pan tray.Thus, oil pan tray coordinates with the cylindrical wheel arranged in described Cylinder Gear wheels, when cylindrical gear rotary, the fluid stored in oil pan tray just can be made to produce and splash, thus oil is supplied to the upper space of housing from oil pan tray, realize carrying out lubrication and cooling to the movable parts in housing.In lubrication by atomization, the oil level in oil pan tray declines and reduce further the degradation of energy of cylindrical wheel in motion.
More preferably, the fuel accumulator being provided with hollow is covered in the first case side; The rotor shaft of tween drive shaft and motor is hollow shaft, and tween drive shaft and rotor shaft coaxially connect successively, form one corresponding with fuel accumulator from the axial oil circuit of the first housing side cover to the second housing side cover.Fluid from this oil circuit by also having carried out lubrication and cooling to corresponding component.
More preferably, being respectively arranged with first of bush type between fuel accumulator and tween drive shaft and between tween drive shaft and rotor shaft send oily device and/or second to send oily device.More preferably, or rotor shaft can be provided with induction element inside the second housing side cover, be back to oil pan tray to make oil via the other return flow line arranged of motor.Thus, enable oil form loop better, play lubrication and cooling effect.Induction element can be metal plate type, has enough intensity resistant against high temperatures again.
More preferably, oil circuit relevant position is provided with at least one first hole and/or the second hole, for compound planet gear and/or clutch shaft bearing and/or the second bearing fuel feeding.Lubrication and cooling can be carried out by fuel feeding better thus.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is the schematic perspective view of the utility model vehicle electric drive system.
Fig. 2 a is the side sectional view of the utility model vehicle electric drive system.
Fig. 2 b is the forward cutaway view of the utility model vehicle electric drive system.
Fig. 3 is the front elevation of the utility model vehicle electric drive system.
Concrete description of reference numerals:
1 vehicle electric drive system
2 housings
3 motors
4 drivings device
5 differentiators
6 stators
7 rotors
8 clutch shaft bearings
9 second bearings
10 rotor shafts
11 compound planet gears
12 Cylinder Gear wheels
13 sun gears
14 hollow gears
15 planetary gear carriers
16 tween drive shafts
17 cylindrical wheels
18 oil pan trays
19 first housing side covers
20 second housing side covers
21 is recessed
22 fuel accumulatoies
23 oil circuits
24 first send oily device
25 second send oily device
26 first holes
27 second holes
28 first contact sleeves
29 second contact sleeves
30 links
31 cooling jackets
32 toothed wheel
33 speed sensors
34 return flow lines
35 induction elements
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in detail.The utility model provides a kind of Vehicular electric drive system, adopts following concrete mode to realize reducing vibration, reducing noise and increase radiating efficiency, and then improves driving efficiency.According to Fig. 1, Fig. 2 a and Fig. 2 b, vehicle electric drive system 1 comprises shell 2 and motor 3, and wherein motor 3 is positioned at housing 2, and motor 3 is coupled to diff 5 and outputting power via driving device 4.Motor comprises stator 6 and rotor 7, and wherein stator 6 surrounds rotor 7, and rotor 7 is fixed on rotor shaft 10, and rotor shaft 10 is arranged on housing 2 via the clutch shaft bearing 8 and the second bearing 9 being positioned at its two ends.Stator 6 is not in contact with each other mutually with housing 2, simultaneously around the outside of stator 6, is provided with cooling jacket 31, for promoting that motor 3 dispels the heat.The axial two ends of cooling jacket 31 can arrange the first contact sleeve 28 and the second contact sleeve 29, for cooling jacket 31 is fixed on housing 2, keep gap between cooling jacket 31 and housing wall.Owing to making full use of the space between stator and housing, namely cooling jacket is set at stator exterior, effectively can promotes motor radiating.Simultaneously, owing to have employed the first contact sleeve 28 and the form of the second contact sleeve 29 that axial two ends arrange, make cooling jacket 31 can be fixed on housing 2 by the first tangential contact sleeve 28 at its axial two ends and the second contact sleeve 29, can reliably realize fixing to cooling jacket 31, can make again to keep gap between cooling jacket 31 and housing wall, thus reduce the vibration & noise of electric transmission system.
As preferably, in the driving device 4 of vehicle electric drive system, comprise and be arranged on compound planet gear 11 on planetary gear carrier 15 and Cylinder Gear wheels 12.The sun gear 13 of compound planet gear 11 is connected with transmitting torque with the rotor shaft 10 of motor 3, and in compound planet gear 11, sun gear 13 is meshed with three planetary wheels.The planetary gear carrier 15 of compound planet gear 11 is connected with Cylinder Gear wheels 12 with the tween drive shaft 16 of driving device 4 respectively.The cylindrical wheel 17 of the mouth of Cylinder Gear wheels 12 is coupled with diff 5, and diff 5 is provided with two semiaxis as Power output, to drive vehicle.The gear of compound planet gear 11 and Cylinder Gear wheels 12 can be preferably helical wheel.Owing to have employed compound planet gear 11, the volume of Planetary Gear Transmission is little, load-carrying capacity large, the advantage of stable working can be embodied in vehicle electric drive system of the present invention, especially contribute to reducing vibration and reducing noise, and keep larger output torque and power simultaneously.More preferably, can along the axis of rotor shaft 10, between the sun gear 13 between clutch shaft bearing 8, second bearing 9 and compound planet gear 11 of the mouth of motor 3, toothed wheel 32 is set, for coordinating the speed sensor 33 arranged in housing 2, to determine the speed of rotor 7, to ensure the smooth working of motor better and to reduce vibration and noise.Wherein, according to Fig. 2 a and Fig. 2 b, the hollow gear 14 of compound planet gear 11 can be arranged on housing 2 movably by the link 30 being provided with recessed 21 and hole slot, can reduce the vibration & noise of electric drive system thus further.
According to Fig. 1, Fig. 2 a and Fig. 2 b, following concrete mode is adopted to realize lubrication and/or cooling.Shared slave mode oil circuit is provided with for lubricating and/or cool each motion parts of electric drive system 1 in housing 2, the both sides of housing 2 form sealing by the first housing side cover 19 and the second housing side cover 20 corresponding thereto, oil pan tray 18 is provided with for oil circuit oil storage at the first housing side cover 19 place of housing 2 inside, oil pan tray 18 coordinates with the cylindrical wheel 17 arranged in Cylinder Gear wheels 12, when cylindrical wheel 17 rotates, the fluid stored in oil pan tray 18 can be made to produce splash, thus oil is got rid of upper space to housing 2 from oil pan tray 18, lubrication and cooling is carried out to the movable parts in housing.Meanwhile, the oil level in oil pan tray 18 declines and reduce further the degradation of energy of cylindrical wheel 17 in motion.
As optimization, according to Fig. 2 a and Fig. 2 b, the first housing side cover 19 can be provided with the fuel accumulator 22 of hollow to collect fluid.The rotor shaft 10 of tween drive shaft 16 and motor 3 all can be arranged to hollow shaft, so not only reduce the energy consumption of motor 3, and coaxial to hollow center shaft 16 and hollow rotor shaft 10 order can be connected, thus form one passes to the second housing side cover 20 axial oil circuit 23 from the first housing side cover 19, and correspondingly with fuel accumulator 22 to connect, make the lubrication and cooling that fluid can realize corresponding component from this oil circuit 23.To with oil circuit 23, first of bush type can be provided with between fuel accumulator 22 and tween drive shaft 16 and between tween drive shaft 16 and rotor shaft 10 and send oily device 24 and/or second to send oily device 25.Further, in order to strengthen lubrication and cooling, the corresponding site on oil circuit 23 can be provided with has the first radial hole 26 and/or the second hole 27, for carrying out fuel feeding to compound planet gear 11 and/or bearing 8.According to Fig. 2 a, Fig. 2 b and Fig. 3, for ease of the circulation of fluid, or rotor shaft 10 can also be provided with the induction element 35 of metal plate type inside described second housing side cover 20, be back to oil pan tray 18 to make fluid via the other return flow line 34 arranged of motor 3.
By reference to the accompanying drawings the preferred detailed description of the invention of the utility model is explained in detail above, but the utility model is not limited to above-mentioned embodiment, in the ken that those skilled in the art possess, can also make a variety of changes without departing from the inventive concept of the premise.
Claims (14)
1. a vehicle electric drive system (1), comprise housing (2) and motor (3), described motor (3) is coupled to diff (5) and outputting power via driving device (4), the stator (6) of described motor (3) surrounds rotor (7), described rotor (7) is fixed on rotor shaft (10), described rotor shaft (10) is arranged on described housing (2) via the clutch shaft bearing (8) and the second bearing (9) being positioned at its two ends, it is characterized in that, described stator (6) and described housing (2) are not in contact with each other, described stator (6) outside is provided with cooling jacket (31), described cooling jacket (31) is fixed on described housing (2).
2. vehicle electric drive system according to claim 1, it is characterized in that, the axial two ends of described cooling jacket (31) are respectively arranged with the first contact sleeve (28) and the second contact sleeve (29), for described cooling jacket (31) is fixed on described housing (2).
3. vehicle electric drive system according to claim 2, it is characterized in that, described driving device (4) comprises at least one and is arranged on compound planet gear (11) on planetary gear carrier (15) and a Cylinder Gear wheels (12); The sun gear (13) of described compound planet gear (11) is connected with the described rotor shaft (10) of described motor (3), in order to transmitting torque, described planetary gear carrier (15) is connected with described Cylinder Gear wheels (12) with the tween drive shaft (16) of described driving device (4) respectively; The cylindrical wheel (17) of the mouth of described Cylinder Gear wheels (12) is coupled with diff (5), and described diff (5) arranges two semiaxis as mouth to drive vehicle.
4. vehicle electric drive system according to claim 3, is characterized in that, the gear of described compound planet gear (11) and described Cylinder Gear wheels (12) is helical wheel.
5. vehicle electric drive system according to claim 3, is characterized in that, described rotor shaft (10) is provided with toothed wheel (32), for coordinating with speed sensor (33) to determine spinner velocity.
6. vehicle electric drive system according to claim 5, it is characterized in that, described toothed wheel (32) is along the clutch shaft bearing (8) being axially set in described motor (3) mouth of described rotor shaft (10), between the second bearing (9) and the described sun gear (13) of described compound planet gear (11).
7. according to the vehicle electric drive system one of claim 2 ~ 6 Suo Shu, it is characterized in that, the hollow gear (14) of described compound planet gear (11) is arranged on described housing (2) actively by link (30).
8. vehicle electric drive system according to claim 7, is characterized in that, described link (30) is provided with recessed (21) and hole slot.
9. vehicle electric drive system according to claim 3, is characterized in that, is provided with oil circuit for lubricating and/or cooling each parts of described vehicle electric drive system (1) in described housing (2); The both sides of described housing (2) form sealing by the first housing side cover (19) and the second housing side cover (20) corresponding thereto; Described housing (2) inside is provided with oil pan tray (18), for described oil circuit oil storage, and coordinate with the described cylindrical wheel (17) in described Cylinder Gear wheels (12), for oil to be supplied to the upper space of described housing (2) from described oil pan tray (18).
10. vehicle electric drive system according to claim 9, is characterized in that, described first housing side cover (19) is provided with the fuel accumulator (22) of hollow; The described rotor shaft (10) of described tween drive shaft (16) and described motor (3) is hollow shaft, described tween drive shaft (16) and described rotor shaft (10) coaxially connect successively, form one corresponding with fuel accumulator to the axial oil circuit (23) of described second housing side cover (20) from described first housing side cover (19).
11. vehicle electric drive systems according to claim 10, it is characterized in that, be respectively arranged with first of bush type between described fuel accumulator (22) and described tween drive shaft (16) and between described tween drive shaft (16) and described rotor shaft (10) and send oily device (24) and/or second to send oily device (25).
12. vehicle electric drive systems according to claim 8, it is characterized in that, described second housing side cover (20) inner side or described rotor shaft (10) are provided with induction element (35) and are back to described oil pan tray (18) to make oil via the other return flow line (34) arranged of described motor (3).
13. vehicle electric drive systems according to claim 12, is characterized in that, described induction element (35) is metal plate type.
14. vehicle electric drive systems according to claim 10, it is characterized in that, described oil circuit (23) relevant position is provided with at least one first hole (26) and/or the second hole (27), for described compound planet gear (11) and/or clutch shaft bearing (8) and/or the second bearing (9) fuel feeding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420734894.2U CN204367888U (en) | 2014-11-28 | 2014-11-28 | Vehicle electric drive system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420734894.2U CN204367888U (en) | 2014-11-28 | 2014-11-28 | Vehicle electric drive system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204367888U true CN204367888U (en) | 2015-06-03 |
Family
ID=53324131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420734894.2U Expired - Fee Related CN204367888U (en) | 2014-11-28 | 2014-11-28 | Vehicle electric drive system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204367888U (en) |
-
2014
- 2014-11-28 CN CN201420734894.2U patent/CN204367888U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150603 Termination date: 20201128 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |