CN112519500A - Two-level speed reduction electric drive axle integrating two-gear AMT double-speed parallel shaft output of double motors - Google Patents
Two-level speed reduction electric drive axle integrating two-gear AMT double-speed parallel shaft output of double motors Download PDFInfo
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- CN112519500A CN112519500A CN201910878039.6A CN201910878039A CN112519500A CN 112519500 A CN112519500 A CN 112519500A CN 201910878039 A CN201910878039 A CN 201910878039A CN 112519500 A CN112519500 A CN 112519500A
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
- B60B35/12—Torque-transmitting axles
- B60B35/121—Power-transmission from drive shaft to hub
- B60B35/122—Power-transmission from drive shaft to hub using gearings
- B60B35/125—Power-transmission from drive shaft to hub using gearings of the planetary type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
- B60B35/12—Torque-transmitting axles
- B60B35/14—Torque-transmitting axles composite or split, e.g. half- axles; Couplings between axle parts or sections
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- 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
- B60K1/02—Arrangement or mounting of electrical propulsion units comprising more than one electric motor
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- 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
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
- B60K17/043—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel
- B60K17/046—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel with planetary gearing having orbital motion
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- 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
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
- B60K17/16—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing
- B60K17/165—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing provided between independent half axles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Motor Power Transmission Devices (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
Abstract
The invention relates to a two-stage speed reduction electric drive axle integrating two motors and outputting two-gear AMT double-speed parallel shafts. Belongs to the technical field of new energy vehicles. It solves current drive axle of electricity and has the motor to generate heat great and occupy the problem that chassis structural arrangement space. It is mainly characterized in that: the differential mechanism comprises a first motor, a second motor, a speed reducer, a differential mechanism, a first half shaft and a second half shaft; the reducer comprises a primary driving gear, a secondary primary reducing driven gear, a primary driving gear, a primary reducing driven gear, two secondary reducer driving gears and a secondary reducing driven gear, wherein the primary driving gear and the secondary reducing driven gear are meshed; the first motor, the second-stage reduction driven wheel and the differential are arranged by adopting parallel shafts. The invention has the characteristics of coaxial and compact structure design, high transmission efficiency, convenient chassis structural arrangement, light dead weight and improvement on the economy of the whole vehicle.
Description
Technical Field
The invention belongs to the technical field of new energy automobiles. In particular to a two-stage speed reduction electric drive axle integrating two motors and outputting two-gear AMT double-speed parallel shafts.
Background
With the development of science and technology and the requirements of environmental protection and energy conservation, the development of the power chain of the whole vehicle is changed from the original engine, the gearbox and the traditional axle into the currently adopted motor and the transmission axle to provide power, and most manufacturers adopt an external single-motor structure at present. The structure is limited by factors such as motor power, an efficient working area and the like, the cost is too high under the condition of higher bearing, the heat generated by the motor is increased, the service life of the motor is influenced and the like; the size of each part is large, the number of the parts is large, the integration level is too low, the arrangement space of a chassis structure is occupied, the arrangement number of batteries and the transmission efficiency are influenced, and the driving range of the vehicle is short; the power performance and the economical efficiency of the whole vehicle are hardly considered.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a two-stage speed reduction electric drive axle integrating two motors and outputting two-gear AMT double-speed parallel shafts.
In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a two grades of speed reduction electricity that two grades of AMT double speed parallel shaft of two motor integration drive axles that drive, includes first motor, reduction gear, differential mechanism, first semi-axis, second semi-axis, independent suspension system and axle housing, its characterized in that: the device also comprises a second motor; the speed reducer comprises two groups of meshed first-stage driving gears and first-stage second-stage reduction driven gears, two groups of meshed first-stage driving gears and first-stage reduction driven gears, two meshed second-stage speed reducer driving gears and a second-stage reduction driven gear, and two synchronizers, wherein the second-stage speed reducer driving gears, the first-stage reduction driven gears, the first-stage second-stage reduction driven gears and the synchronizers are coaxially arranged in two groups; the first motor shaft of the first motor is integrated with two primary driving gears, and the second motor shaft of the second motor is integrated with the other two primary driving gears; the first motor, the second motor, the secondary speed reduction driven wheel and the differential are arranged in a parallel shaft mode; the independent suspension system is arranged between the middle part of the axle housing and the two wheel edges.
In the scheme, an independent suspension system is respectively arranged between the middle part of the axle housing and the two wheel edges, the upper end of the independent suspension system is connected with an automobile body, and the lower end of the independent suspension system is connected with the axle housing.
In the above scheme, the first motor and the second motor are driving motors of the same type.
In the scheme, the secondary speed reduction driven wheel and the differential are integrated to form the secondary speed reduction driven wheel and the differential; the secondary speed reduction driven wheel and the differential are respectively connected with the first half shaft and the second half shaft through meshing sleeve splines.
In the above scheme, the first motor and the second motor are distributed in mirror symmetry relative to a vertical plane on which the first half shaft and the second half shaft are located.
In the above scheme, the first motor, the second motor and the speed reducer are arranged transversely.
In the scheme, an independent suspension system is respectively arranged between the middle part of the axle housing and two wheel sides, the upper end of the independent suspension system is connected with an automobile body, and the lower end of the independent suspension system is connected with the axle housing; the first motor and the second motor are driving motors with the same model; the secondary speed reduction driven wheel and the differential are designed integrally to form a secondary speed reduction driven wheel and a differential; the secondary speed reduction driven wheel and the differential are respectively in splined connection with the first half shaft and the second half shaft through meshing sleeves; the first motor and the second motor are distributed in a mirror symmetry mode relative to a vertical plane where the first half shaft and the second half shaft are located; the first motor, the second motor and the speed reducer are transversely arranged.
The invention adopts double motors as power sources, and designs the motor shaft and the primary speed reduction driving gear into a whole. When the differential works at a first gear (low gear), the first-gear (low gear) secondary driven gear and the differential are connected together through the meshing sleeve spline, the wheel is transmitted through the half shaft, the first-gear (low gear) power transmission is realized, and at the moment, the second-gear (high gear) secondary driven gear and the differential slide through the roller pins between the first-gear (low gear) secondary driven gear and the differential. When the two-gear (high-speed gear) works, the two-gear (high-speed gear) secondary driven wheel and the differential are connected together through the meshing sleeve spline and are transmitted to the wheels through the half shaft, so that the power transmission of the two-gear (high-speed gear) is realized, and at the moment, the one-gear (low-speed gear) secondary driven cylindrical gear and the differential slide through the roller pins between the two.
The invention adopts the uniform arrangement of the upper and lower pairs of gears, realizes power split and effectively reduces the specification of the gears. The trafficability characteristic of the whole vehicle is improved. The invention adopts double-shaft arrangement, so that the spatial structure arrangement of the speed reducer is more reasonable, and the differential is arranged between the two driven gears of the two-stage speed reduction, so that the spatial arrangement is further compact and ingenious.
According to the invention, the two gears are switched, the shifting fork rod is pushed by the motor to drive the meshing sleeve to move left and right, and the spline is respectively meshed with the first-gear driven cylindrical gear and the second-gear driven cylindrical gear, so that gear shifting and power transmission are realized, the motor is enabled to work in a higher efficient area all the time, and the efficiency of the whole vehicle is improved.
The integrated independent suspension system has a compact structure, and improves the running smoothness, operation stability and the like of the whole vehicle. The motor and the speed reducer are transversely arranged, so that the space of a chassis is saved, more batteries can be arranged on the whole vehicle, and the endurance mileage of the whole vehicle is improved.
Compared with the prior art, the invention has the advantages of coaxial and compact structure, high transmission efficiency, convenient structural arrangement of the chassis and light dead weight. The double-gear structure is adopted, so that the whole vehicle can better adapt to different working conditions, and the economy of the whole vehicle is improved. And the two-stage speed reduction is adopted, so that the dynamic property of the whole vehicle is improved.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
In the figure: 1. a first motor; 2. a first motor shaft; 3. a first primary second-speed reduction driven gear; 4. A first primary first-speed reduction driven gear; 5. a first synchronizer; 6. a first secondary reduction drive gear; 7. a second motor; 8. a second motor shaft; 9. a second first-stage second-stage reduction driven gear; 10. a second-stage first-gear speed reduction driven gear; 11. a second synchronizer; 12. a second secondary reduction drive gear; 13. a secondary speed reduction driven wheel and a differential mechanism; 14. a first half shaft; 15. a second half shaft; 16. a first wheel; 17. a second wheel; 18. an independent suspension system.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the invention is a two-stage speed reduction electric drive axle with dual motors integrated with two-gear AMT double-speed parallel shaft output, comprising a first motor 1 and a second motor 7, a speed reducer, a differential, a first half shaft 14, a second half shaft 15, an independent suspension system 18 and an axle housing, wherein the speed reducer comprises two groups of meshed first-stage driving gears and first-stage second-stage speed reduction driven gears, two groups of meshed first-stage driving gears and first-stage speed reduction driven gears, two meshed second-stage speed reducer driving gears and a second-stage speed reduction driven gear, and two synchronizers, wherein the second-stage speed reducer driving gears, the first-stage speed reduction driven gears, the first-stage second-stage speed reduction driven gears and the synchroni. The first motor shaft 2 of the first motor 1 and two first-level driving gears are integrally designed, the second motor shaft 8 of the second motor 7 and the other two first-level driving gears are integrally designed, and the first motor shaft 2 and the second motor shaft 8 are used as a motor output shaft and an input shaft of a speed reducer. The first motor 1, the second motor 7, the second-stage reduction driven wheel and the differential mechanism are arranged by adopting parallel shafts. An independent suspension system 18 is respectively arranged between the middle part of the axle housing and the two wheel edges, the upper end of the independent suspension system 18 is connected with an automobile body, and the lower end of the independent suspension system is connected with the axle housing. The differential is connected by splines of the sleeve to a first axle shaft 14 and a second axle shaft 15, respectively, the first axle shaft 14 and the second axle shaft 15 being connected to a first wheel 16 and a second wheel 17, respectively.
The first motor 1 and the second motor 7 are drive motors of the same type. The secondary speed reduction driven wheel and the differential mechanism are designed integrally to form a secondary speed reduction driven wheel and a differential mechanism 13, and the secondary speed reduction driven wheel and the differential mechanism 13 are connected with the first half shaft 14 and the second half shaft 15 through meshing sleeve splines respectively. The first electric machine 1 and the second electric machine 7 are distributed with mirror symmetry with respect to a vertical plane in which the first half-shaft 14 and the second half-shaft 15 are located. The first motor 1, the second motor 7 and the speed reducer are arranged transversely.
Because the driven wheel and the differential mechanism 13 are not provided with power coupling devices, the output speeds of the two motors to the driven wheel are ensured to be the same in the normal running process; due to the existence of the two synchronizers, the two motors can be shifted at different times, and the smoothness during shifting is improved. According to the invention, one high-power motor is converted into two low-power motors under the condition of not reducing the output power, so that the high-power output working condition is reduced, the service life of the motor is prolonged, and the production and maintenance cost is reduced; the transmission mechanism adopts primary speed reduction, has compact structure and high transmission efficiency, and is convenient for structural arrangement of the chassis; the integrated independent suspension system has a compact structure, and improves the running smoothness, operation stability and the like of the whole vehicle.
When the motor works normally, the first motor shaft 2, the first primary driving gear, the second motor shaft 8 and the second primary driving gear drive the first primary and secondary reduction driven gear 3, the second primary and secondary reduction driven gear 9 and the first primary and primary reduction driven gear 4, the second first-stage reduction driven gear 10, the first-stage reduction driven gear 4, the second first-stage reduction driven gear 10, the first second-stage reduction driven gear 3, the second first-stage second-stage reduction driven gear 9, the first second-stage reduction driving gear shaft 6 and the second-stage reduction driving gear 12 are matched through splines of the first synchronizer 5 and the second synchronizer 11 to drive the second-stage reduction driven wheel and the differential mechanism 13, power is transmitted to the first half shaft 14 and the second half shaft 15, the first half shaft 14 and the second half shaft 15 drive the first wheel 16 and the second wheel 17, and therefore the power is transmitted to the wheels from the motor.
In the first-gear operation, the first synchronizer 5 and the second synchronizer 11 are engaged with the first primary second-gear reduction driven gear 3 and the second primary second-gear reduction driven gear 9, the power of the first primary first-gear reduction driven gear 4 and the second primary first-gear reduction driven gear 10 is transmitted to the second-stage reduction driven wheel and the differential 13, the power is transmitted to the first half shaft 14 and the second half shaft 15, and the first half shaft 14 and the second half shaft 15 drive the first wheel 16 and the second wheel 17, so that the power is transmitted to the wheels from the motor.
In the second-gear operation, the first synchronizer 5 and the second synchronizer 11 are engaged with the first primary first-gear speed reduction driven gear 4 and the second primary first-gear speed reduction driven gear 10, the power of the first primary second-gear speed reduction driven gear 3 and the second primary second-gear speed reduction driven gear 9 is transmitted to the second-stage speed reduction driven wheel and the differential mechanism 13, the power is transmitted to the first half shaft 14 and the second half shaft 15, and the first half shaft 14 and the second half shaft 15 drive the first wheel 16 and the second wheel 17, so that the power is transmitted to the wheels from the motor.
The invention adopts double motors, primary speed reduction and parallel shaft arrangement, and the compact structural arrangement can reduce the use of high-power motors, reduce the cost, shorten a transmission chain, improve the efficiency, reduce the occupied space of an axle, reduce the weight of the whole axle, increase the battery capacity of a carriage and improve the driving range of the vehicle.
Claims (7)
1. The utility model provides a two grades of speed reduction electricity that two grades of AMT double speed parallel shaft of two motor integration drive axles that drive, includes first motor (1), reduction gear, differential mechanism, first semi-axis (14), second semi-axis (15), independent suspension system (18) and axle housing, its characterized in that: also comprises a second motor (7); the speed reducer comprises two groups of meshed first-stage driving gears and first-stage second-stage reduction driven gears, two groups of meshed first-stage driving gears and first-stage reduction driven gears, two meshed second-stage speed reducer driving gears and a second-stage reduction driven gear, and two synchronizers, wherein the second-stage speed reducer driving gears, the first-stage reduction driven gears, the first-stage second-stage reduction driven gears and the synchronizers are coaxially arranged in two groups; a first motor shaft (2) of the first motor (1) is integrated with two primary driving gears, and a second motor shaft (8) of the second motor (7) is integrated with the other two primary driving gears; the first motor (1), the second motor (7), the secondary speed reduction driven wheel and the differential are arranged in a parallel shaft manner; and the independent suspension system (18) is arranged between the middle part of the axle housing and two wheel edges.
2. The two-stage speed reduction electric drive axle with the double-motor integrated two-gear AMT double-speed parallel shaft output according to claim 1 is characterized in that: an independent suspension system (18) is respectively arranged between the middle of the axle housing and the two wheel edges, the upper end of the independent suspension system (18) is connected with an automobile body, and the lower end of the independent suspension system is connected with the axle housing.
3. The two-stage speed reduction electric drive axle with the double-motor integrated two-gear AMT double-speed parallel shaft output as claimed in claim 1 or 2, wherein: the first motor (1) and the second motor (7) are driving motors with the same model.
4. The two-stage speed reduction electric drive axle with the double-motor integrated two-gear AMT double-speed parallel shaft output as claimed in claim 1 or 2, wherein: the secondary speed reduction driven wheel and the differential are designed integrally to form a secondary speed reduction driven wheel and a differential (13); the two-stage reduction driven wheel and the differential (13) are respectively connected with the first half shaft (14) and the second half shaft (15) through meshing sleeve splines.
5. The two-stage speed reduction electric drive axle with the double-motor integrated two-gear AMT double-speed parallel shaft output as claimed in claim 1 or 2, wherein: the first motor (1) and the second motor (7) are distributed in a mirror symmetry mode relative to a vertical plane where the first half shaft (14) and the second half shaft (15) are located.
6. The two-stage speed reduction electric drive axle with the double-motor integrated two-gear AMT double-speed parallel shaft output as claimed in claim 1 or 2, wherein: the first motor (1), the second motor (7) and the speed reducer are transversely arranged.
7. The two-stage speed reduction electric drive axle with the double-motor integrated two-gear AMT double-speed parallel shaft output according to claim 1 is characterized in that: an independent suspension system (18) is respectively arranged between the middle part of the axle housing and the two wheel sides, the upper end of the independent suspension system (18) is connected with the automobile body, and the lower end of the independent suspension system is connected with the axle housing; the first motor (1) and the second motor (7) are driving motors with the same model; the secondary speed reduction driven wheel and the differential are designed integrally to form a secondary speed reduction driven wheel and a differential (13); the secondary speed reduction driven wheel and the differential (13) are respectively in spline connection with a first half shaft (14) and a second half shaft (15) through meshing sleeves; the first motor (1) and the second motor (7) are distributed in a mirror symmetry mode relative to a vertical plane where the first half shaft (14) and the second half shaft (15) are located; the first motor (1), the second motor (7) and the speed reducer are transversely arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910878039.6A CN112519500A (en) | 2019-09-17 | 2019-09-17 | Two-level speed reduction electric drive axle integrating two-gear AMT double-speed parallel shaft output of double motors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910878039.6A CN112519500A (en) | 2019-09-17 | 2019-09-17 | Two-level speed reduction electric drive axle integrating two-gear AMT double-speed parallel shaft output of double motors |
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| Publication Number | Publication Date |
|---|---|
| CN112519500A true CN112519500A (en) | 2021-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910878039.6A Pending CN112519500A (en) | 2019-09-17 | 2019-09-17 | Two-level speed reduction electric drive axle integrating two-gear AMT double-speed parallel shaft output of double motors |
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| CN (1) | CN112519500A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115199742A (en) * | 2022-07-07 | 2022-10-18 | 一汽解放汽车有限公司 | Transmission assembly, power driving system and vehicle |
-
2019
- 2019-09-17 CN CN201910878039.6A patent/CN112519500A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115199742A (en) * | 2022-07-07 | 2022-10-18 | 一汽解放汽车有限公司 | Transmission assembly, power driving system and vehicle |
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