CN112519494A - Double-motor single-speed two-stage speed reduction parallel shaft electric drive bridge - Google Patents
Double-motor single-speed two-stage speed reduction parallel shaft electric drive bridge Download PDFInfo
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- CN112519494A CN112519494A CN201910877221.XA CN201910877221A CN112519494A CN 112519494 A CN112519494 A CN 112519494A CN 201910877221 A CN201910877221 A CN 201910877221A CN 112519494 A CN112519494 A CN 112519494A
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- 230000009467 reduction Effects 0.000 title claims abstract description 48
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 38
- 230000005611 electricity Effects 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract description 14
- 230000000712 assembly Effects 0.000 abstract 2
- 238000000429 assembly Methods 0.000 abstract 2
- 230000008030 elimination Effects 0.000 abstract 1
- 238000003379 elimination reaction Methods 0.000 abstract 1
- 230000007246 mechanism Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
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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
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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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
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Abstract
The invention relates to a double-motor single-speed two-stage speed reduction parallel shaft electric drive bridge. Belongs to the technical field of new energy vehicles. The single motor mainly solves the problems of high energy loss, low transmission efficiency and weaker dynamic property of the existing single motor. It is mainly characterized in that: the device comprises a first motor, a second motor, a first half shaft, a second half shaft, a first speed reducer assembly and a second speed reducer assembly; the first and second motors are respectively arranged on the first and second speed reducer assemblies; the first and second speed reducer assemblies respectively comprise an input gear, a first and second speed reduction gears, an output gear and an intermediate shaft; the first-stage reduction gear and the first second-stage reduction gear are arranged on the intermediate shaft; the first half shaft, the second half shaft, the first motor shaft and the second motor shaft are parallel to each other. The invention has the characteristics of double-motor drive, mutual independence of left and right transmission systems, elimination of a mechanical differential and chassis space saving, and is mainly used for a parallel-shaft electric drive bridge with single-speed two-stage speed reduction.
Description
Technical Field
The invention belongs to the technical field of new energy automobiles. In particular to a double-motor single-speed two-stage speed reduction parallel shaft electric drive bridge.
Background
With the increasing importance of automobile exhaust pollution and energy consumption in all parts of the world, new energy automobiles become the vehicle models which are researched and developed by automobile manufacturers in all countries. The whole vehicle power system is also changed from the original engine + gearbox + traditional axle into the currently adopted motor + transmission axle to provide power. At present, the mature and more applied electric drive technology in domestic and foreign markets is based on a transmission system consisting of a single motor and a differential speed reducer, the single motor centralized drive mode mainly depends on rigid power transmission of gears and couplings, the loss of the single motor centralized drive mode is almost the same as that of a common fuel automobile in the power transmission process, the energy loss is high, the transmission efficiency is low, and the dynamic property is weaker.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a double-motor single-speed two-stage speed reduction parallel shaft electric drive bridge.
In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a two motor single-speed second grade speed reduction parallel shaft electricity drive bridge, includes first motor, first semi-axis, second semi-axis and first reduction gear assembly, its characterized in that: the first motor is arranged on a first speed reducer assembly, the first speed reducer assembly comprises a first input gear and a first primary speed reducing gear which are meshed, a first secondary speed reducing gear and a first output gear which are meshed, and a first intermediate shaft, and the first primary speed reducing gear and the first secondary speed reducing gear are arranged on the first intermediate shaft; the motor is characterized by further comprising a second motor and a second speed reducer assembly, wherein the second motor is mounted on the second speed reducer assembly, the second speed reducer assembly comprises a second input gear and a second first-stage speed reducing gear which are meshed with each other, a second-stage speed reducing gear and a second output gear which are meshed with each other, and a second intermediate shaft, and the second first-stage speed reducing gear and the second-stage speed reducing gear are arranged on the second intermediate shaft; the two ends of the first half shaft are respectively connected with the first wheel and the first speed reducer assembly, and the two ends of the second half shaft are respectively connected with the second wheel and the second speed reducer assembly; the first half shaft, the second half shaft, the first motor shaft and the second motor shaft are parallel to each other.
The first motor and the second motor (10) are coaxially arranged at intervals in the technical scheme of the invention; the first motor shaft is connected with the first input gear through a spline, and the second motor shaft is connected with the second input gear through a spline.
According to the technical scheme, the first motor and the first speed reducer assembly and the second motor and the second speed reducer are symmetrically arranged on two sides of the total component.
The first motor and the second motor in the technical scheme of the invention are driving motors with the same type or different types.
In the technical scheme of the invention, the first half shaft is fixedly connected with the first output gear; the second half shaft is fixedly connected with the second output gear.
The first motor and the second motor in the technical scheme of the invention are driving motors with the same model; the first motor and the second motor are coaxial and arranged at intervals; the first motor and the first reducer assembly are symmetrically arranged on two sides of the total components of the second motor and the second reducer; the first motor shaft is connected with the first input gear through a spline, and the second motor shaft is connected with the second input gear through a spline; the first half shaft is fixedly connected with the first output gear, and the second half shaft is fixedly connected with the second output gear.
The double motors and the speed reducer are symmetrically arranged on two sides, the transmission systems on the left side and the right side are the same, the output end of the motor shaft is fixedly provided with an input gear, the input gear is meshed and connected with a first-stage reduction gear, the first-stage reduction gear is fixedly arranged at one end of a middle shaft, the other end of the middle shaft is fixedly provided with a second-stage reduction input gear, the second-stage reduction input gear is meshed and connected with a second-stage reduction output gear, and the second-stage reduction output gear is connected.
The left transmission system and the right transmission system are mutually independent, the middle mechanical connection part only serves as a supporting function, structures such as a mechanical differential mechanism and the like are omitted, the space of a chassis is saved, the weight of the whole bridge is reduced, and the endurance mileage is improved. The single-speed two-stage speed reduction is adopted, the structure is simple, the torque is large, and the loss in the energy transfer process is small.
The invention cancels the differential mechanism, adopts electronic differential for controlling turning antiskid and the like, can independently distribute the torque of the two wheels at any time according to the driving state, and has more accurate control and higher control efficiency.
The invention adopts distributed arrangement, compared with the traditional centralized driving mode, the distributed driving mode adopts electronic differential control, thus reducing the mechanical loss caused by the differential mechanism and improving the transmission efficiency; the torque of each motor is independently controllable, the response is fast, and the stability of the vehicle can be improved by coordinately controlling each motor; under the requirement of the same power, the power can be distributed to each motor, so that the size of the motor is reduced, and the axle is more flexibly arranged; the single-speed two-stage speed reduction integrated transmission system is simple in structure and light in weight, and the endurance mileage can be improved.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
The names corresponding to the sequence numbers in the figure are as follows: 1-a first electric machine, 2-a first electric machine shaft, 3-a first input gear, 4-a first primary reduction gear, 5-a first intermediate shaft, 6-a first secondary reduction gear, 7-a first output gear, 8-a first half shaft, 9-a first wheel, 10-a second electric machine, 11-a second electric machine shaft, 12-a second input gear, 13-a second primary reduction gear, 14-a second intermediate shaft, 15-a second secondary reduction gear, 16-a second output gear, 17-a second half shaft, 18-a second wheel.
Detailed Description
As shown in FIG. 1, the invention relates to a double-motor single-speed two-stage speed reduction parallel shaft electric drive bridge, which comprises a first motor 1, a second motor 10, a first half shaft 8, a second half shaft 17, a first speed reducer assembly and a second speed reducer assembly. Wherein the first electric machine 1 is mounted on a first reducer assembly and the second electric machine 10 is mounted on a second reducer assembly. The first motor 1 and the first reducer assembly are symmetrically arranged on two sides of the second motor 10 and the first reducer assembly. The first motor 1 and the second motor 10 are driving motors of the same type, and the first motor 1 and the second motor 10 are arranged coaxially and at intervals. The first half shaft 5, the second half shaft 14, the first motor shaft 2 and the second motor shaft 11 are parallel to each other. The two ends of the first half shaft 8 are respectively connected with the first wheel 9 and the first speed reducer assembly, and the two ends of the second half shaft 17 are respectively connected with the second wheel 18 and the second speed reducer assembly.
The first speed reducer assembly comprises a first input gear 3 and a first primary speed reduction gear 4 which are meshed, a first secondary speed reduction gear 6 and a first output gear 7 which are meshed, and a first intermediate shaft 5, wherein the first primary speed reduction gear 4 and the first secondary speed reduction gear 6 are arranged on the first intermediate shaft 5. The second reducer assembly comprises a second input gear 12 and a second first-stage reduction gear (13) which are meshed, a second-stage reduction gear 15 and a second output gear 16 which are meshed, and a second intermediate shaft 14, wherein the second first-stage reduction gear 13 and the second-stage reduction gear 15 are arranged on the second intermediate shaft 14. The first motor shaft 2 is connected with the first input gear 3 through a spline, and the second motor shaft 11 is connected with the second input gear 12 through a spline. The first half shaft 8 is fixedly connected with the first output gear 7, and the second half shaft 17 is fixedly connected with the second output gear 16.
The first motor 1 is connected with a first motor shaft 2, a first input gear 3 is fixedly mounted at the output end of the first motor shaft 2, the first input gear 3 is meshed with a first primary reduction gear 4, the first primary reduction gear 4 is fixedly mounted at one end of a first intermediate shaft 5, a first secondary reduction gear 6 is mounted at the other end of the first intermediate shaft 5, the first secondary reduction gear 6 is meshed with a first output gear 7, the first output gear 7 is fixedly mounted on a first half shaft 8, and the first half shaft 8 is connected with a first wheel 9; the second motor 10 is connected with a second motor shaft 11, a second input gear 12 is fixedly mounted at the output end of the second motor shaft 11, the second input gear 12 is meshed with a second first-stage reduction gear 13, the second first-stage reduction gear 13 is fixedly mounted at one end of a second intermediate shaft 14, a second-stage reduction gear 15 is mounted at the other end of the second intermediate shaft 14, the second-stage reduction gear 15 is meshed with a second output gear 16, the second output gear 16 is fixedly mounted on a second half shaft 17, and the second half shaft 17 is connected with a second wheel 18. The functions of steering, skid resistance and the like are completed through the independent torque distribution of the double motors.
The invention has the following characteristics: 1. the double-motor drive is adopted, the left transmission system and the right transmission system are mutually independent and symmetrically arranged, the middle mechanical connection part only serves as a supporting function, structures such as a mechanical differential mechanism and the like are omitted, the loss in the energy transfer process is small, the chassis space is saved, the whole bridge weight is reduced, and the endurance mileage is improved; 2. the two-stage speed reduction is integrated, the torque is increased, and the dynamic property of a drive axle is improved; 3. the torque of each motor is independently controllable, the response is fast, the stability of the vehicle can be improved by coordinately controlling each motor, and the control is more accurate.
Claims (6)
1. The utility model provides a two motor single-speed second grade speed reduction parallel shaft electricity drive bridge, includes first motor (1), first semi-axis (8), second semi-axis (17) and first reduction gear assembly, its characterized in that: the first motor (1) is arranged on a first speed reducer assembly, the first speed reducer assembly comprises a first input gear (3) and a first primary speed reducing gear (4) which are meshed, a first secondary speed reducing gear (6) and a first output gear (7) which are meshed, and a first intermediate shaft (5), and the first primary speed reducing gear (4) and the first secondary speed reducing gear (6) are arranged on the first intermediate shaft (5); the motor is characterized by further comprising a second motor (10) and a second speed reducer assembly, wherein the second motor (10) is installed on the second speed reducer assembly, the second speed reducer assembly comprises a second input gear (12) and a second first-stage speed reducing gear (13) which are meshed with each other, a second-stage speed reducing gear (15) and a second output gear (16) which are meshed with each other, and a second intermediate shaft (14), and the second first-stage speed reducing gear (13) and the second-stage speed reducing gear (15) are arranged on the second intermediate shaft (14); two ends of the first half shaft (8) are respectively connected with a first wheel (9) and a first speed reducer assembly, and two ends of the second half shaft (17) are respectively connected with a second wheel (18) and a second speed reducer assembly; the first half shaft (8), the second half shaft (17), the first motor shaft (2) and the second motor shaft (11) are parallel to each other.
2. The dual-motor single-speed two-stage speed reduction parallel-shaft electric drive bridge according to claim 1, characterized in that: the first motor (1) and the second motor (10) are coaxially arranged at intervals; the first motor shaft (2) is connected with the first input gear (3) through a spline, and the second motor shaft (11) is connected with the second input gear (12) through a spline.
3. The dual-motor single-speed two-stage speed reduction parallel-shaft electric drive bridge according to claim 1 or 2, characterized in that: the first motor (1) and the first reducer assembly are symmetrically arranged on two sides of the total components of the second motor (10) and the second reducer.
4. The dual-motor single-speed two-stage speed reduction parallel-shaft electric drive bridge according to claim 1 or 2, characterized in that: the first motor (1) and the second motor (10) are driving motors with the same type or different types.
5. The dual-motor single-speed two-stage speed reduction parallel-shaft electric drive bridge according to claim 1 or 2, characterized in that: the first half shaft (8) is fixedly connected with the first output gear (7); the second half shaft (17) is fixedly connected with the second output gear (16).
6. The dual-motor single-speed two-stage speed reduction parallel-shaft electric drive bridge according to claim 1 or 2, characterized in that: the first motor (1) and the second motor (10) are driving motors with the same model; the first motor (1) and the second motor (10) are coaxially arranged at intervals; the first motor (1) and the first reducer assembly are symmetrically arranged on two sides of the total components of the second motor (10) and the second reducer; the first motor shaft (2) is connected with the first input gear (3) through a spline, and the second motor shaft (11) is connected with the second input gear (12) through a spline; the first half shaft (8) is fixedly connected with the first output gear (7), and the second half shaft (17) is fixedly connected with the second output gear (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910877221.XA CN112519494A (en) | 2019-09-17 | 2019-09-17 | Double-motor single-speed two-stage speed reduction parallel shaft electric drive bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910877221.XA CN112519494A (en) | 2019-09-17 | 2019-09-17 | Double-motor single-speed two-stage speed reduction parallel shaft electric drive bridge |
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| Publication Number | Publication Date |
|---|---|
| CN112519494A true CN112519494A (en) | 2021-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910877221.XA Pending CN112519494A (en) | 2019-09-17 | 2019-09-17 | Double-motor single-speed two-stage speed reduction parallel shaft electric drive bridge |
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| Country | Link |
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| CN (1) | CN112519494A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023207569A1 (en) * | 2022-04-29 | 2023-11-02 | 比亚迪股份有限公司 | Electric drive assembly, four-wheel drive system and vehicle |
| US12011994B2 (en) * | 2022-07-12 | 2024-06-18 | Toyota Jidosha Kabushiki Kaisha | Driving apparatus |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101519040A (en) * | 2008-05-23 | 2009-09-02 | 北京理工大学 | Double-motor skidproof differential drive axle of electric automobile |
| CN210733716U (en) * | 2019-09-17 | 2020-06-12 | 东风德纳车桥有限公司 | Double-motor single-speed two-stage speed reduction parallel shaft electric drive bridge |
-
2019
- 2019-09-17 CN CN201910877221.XA patent/CN112519494A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101519040A (en) * | 2008-05-23 | 2009-09-02 | 北京理工大学 | Double-motor skidproof differential drive axle of electric automobile |
| CN210733716U (en) * | 2019-09-17 | 2020-06-12 | 东风德纳车桥有限公司 | Double-motor single-speed two-stage speed reduction parallel shaft electric drive bridge |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023207569A1 (en) * | 2022-04-29 | 2023-11-02 | 比亚迪股份有限公司 | Electric drive assembly, four-wheel drive system and vehicle |
| US12011994B2 (en) * | 2022-07-12 | 2024-06-18 | Toyota Jidosha Kabushiki Kaisha | Driving apparatus |
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