CN112519491A - Double-motor single-speed two-stage deceleration strip wheel-side deceleration independent suspension parallel-shaft electric drive bridge - Google Patents
Double-motor single-speed two-stage deceleration strip wheel-side deceleration independent suspension parallel-shaft electric drive bridge Download PDFInfo
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- CN112519491A CN112519491A CN201910877190.8A CN201910877190A CN112519491A CN 112519491 A CN112519491 A CN 112519491A CN 201910877190 A CN201910877190 A CN 201910877190A CN 112519491 A CN112519491 A CN 112519491A
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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
- 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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- 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
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
Abstract
The invention discloses a parallel-shaft electric drive bridge of a wheel-side speed reducing independent suspension of a double-motor single-speed two-stage speed reducing belt. 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 system comprises a first motor, a second motor, a first half shaft, a second half shaft, a first wheel-side reducer assembly, a second wheel-side reducer assembly, a first reducer assembly and a second 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; two ends of the half shaft are respectively connected with the wheel-side reducer assembly and the 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 invention has the characteristics of double-motor drive, mutual independence of left and right transmission systems, elimination of a mechanical differential and saving of the space and the weight of a chassis, and is mainly used for a parallel-shaft electric drive axle of a single-speed two-stage speed reducing belt wheel-side speed reducing independent suspension.
Description
Technical Field
The invention belongs to the technical field of new energy automobiles. In particular to a double-motor single-speed two-stage deceleration strip wheel-side deceleration independent suspension 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 deceleration strip wheel-side deceleration independent suspension 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 deceleration strip wheel limit speed reduction independent suspension parallel shaft electricity drive bridge, includes first motor, first semi-axis, second semi-axis, first wheel limit reduction gear assembly, second wheel limit reduction gear assembly 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; two ends of the first half shaft are respectively connected with the first wheel-side reducer assembly and the first reducer assembly, and two ends of the second half shaft are respectively connected with the first wheel-side reducer assembly and the second 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 are coaxial and 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.
The first hub reduction gear assembly comprises a first sun gear, a first planet carrier and a first gear ring, wherein the first sun gear is arranged on the end face of a first half shaft; the second hub reduction gear assembly comprises a second sun gear, a second planet carrier and a second gear ring, and the second sun gear is arranged on the end face of the second half shaft; the half shaft is connected with the sun gear through a spline.
In the technical scheme of the invention, the first output gear is fixedly arranged on the first half shaft; the second output gear is fixedly mounted on the second half shaft.
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 connected with the first wheel, and the second half shaft is connected with the second wheel; the first hub reduction gear assembly comprises a first sun gear, a first planet carrier and a first gear ring, wherein the first sun gear is arranged on the end face of the first half shaft; the second hub reduction gear assembly comprises a second sun gear, a second planet carrier and a second gear ring, and the second sun gear is arranged on the end face of the second half shaft; the half shaft is connected with the sun gear through a spline; the half shaft is connected with the sun gear through a spline.
In the technical scheme of the invention, the first wheel-side reducer assembly is fixedly arranged on a first wheel; and the second wheel-side reducer assembly is fixedly arranged on a second wheel.
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, an input gear is fixedly arranged at the output end of a motor shaft, the input gear is meshed and connected with a first-stage speed reduction gear, the first-stage speed reduction gear is fixedly arranged at one end of a middle shaft, a second-stage speed reduction input gear is fixedly arranged at the other end of the middle shaft, the second-stage speed reduction input gear is meshed and connected with a second-stage speed reduction output gear, the second-stage speed reduction output gear is arranged at one end of a half shaft, a sun gear is arranged at the other end of the half shaft, the sun.
The left transmission system and the right transmission system are mutually independent, are not mechanically connected, and cancel structures such as a mechanical differential mechanism, thereby saving the space of a chassis, reducing the weight of the whole bridge and improving the endurance mileage. 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 wheel reduction gear is integrated, and the vehicle trafficability and the dynamic property are further improved.
The invention adopts an independent suspension structure, can reduce the inclination and the vibration of the vehicle body, reduce the impact force received by the vehicle body and improve the driving comfort; the center of gravity can be lowered, thereby improving the driving stability.
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 electric drive axle adopts double-motor drive, distributed symmetrical arrangement and independent suspension, compared with the traditional centralized drive form, the distributed drive adopts electronic differential control, thereby reducing the mechanical loss caused by a 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; the integrated hub reduction further reduces the speed and increases the torque, and the trafficability characteristic and the dynamic characteristic of the electric drive bridge are 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 motor shaft, 3-a first input gear, 4-a first reduction gear, 5-a first intermediate shaft, 6-a first reduction gear, 7-a first output gear, 8-a first half shaft, 9-a first ring gear, 10-a first planet carrier, 11-a first sun gear, 12-a first planet gear, 13-a first wheel, 14-a second electric machine, 15-a second motor shaft, 16-a second input gear, 17-a second first reduction gear, 18-a second intermediate shaft, 19-a second reduction gear, 20-a second output gear, 21-a second half shaft, 22-a second ring gear, 23-a second planet carrier, 24-a second sun gear, 25-a second planet gear, 26-second wheel.
Detailed Description
As shown in FIG. 1, the invention relates to a double-motor single-speed two-stage speed-reducing belt wheel-side speed-reducing independent suspension parallel-shaft electric drive bridge, which comprises a first motor 1, a second motor 14, a first half shaft 8, a second half shaft 21, a first wheel-side speed reducer assembly, a second wheel-side speed reducer assembly, a first speed reducer assembly and a second speed reducer assembly. Wherein the first electric machine 1 is mounted on a first retarder assembly and the second electric machine 14 is mounted on a second retarder assembly. The first motor 1 and the first reducer assembly are symmetrically arranged on two sides of the total component of the second motor 14 and the first reducer, the double motors, the gear box and the reducers are symmetrically arranged on two sides, and the transmission systems on the left side and the right side are the same. The first motor 1 and the second motor 14 are driving motors of the same type, and the first motor 1 and the second motor 14 are arranged coaxially and at intervals. The first half shaft 8, the second half shaft 21, the first motor shaft 2 and the second motor shaft 15 are parallel to each other.
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 reduction assembly comprises a second input gear 16 and a second first reduction gear 17 which are meshed, a second reduction gear 19 and a second output gear 20 which are meshed, and a second intermediate shaft 18, wherein the second first reduction gear 17 and the second reduction gear 19 are arranged on the second intermediate shaft 18. The first motor shaft 2 is connected to the first input gear 3 through a spline, and the second motor shaft 15 is connected to the second input gear 16 through a spline. The two ends of the first half shaft 8 are respectively connected with the first wheel-side reducer assembly and the first reducer assembly, and the two ends of the second half shaft 21 are respectively connected with the first wheel-side reducer assembly and the second reducer assembly. The first hub reduction gear assembly comprises a first sun gear 11, a first planet gear 12, a first planet carrier 10 and a first gear ring 9, wherein the first sun gear 11 is arranged on the end face of the first half shaft 8. The second hub reduction gear assembly comprises a second sun gear 24, a second planet gear 25, a second planet carrier 23 and a second ring gear 22, wherein the second sun gear 24 is arranged on the end surface of the second half shaft 21. The first axle shaft 8 and the second axle shaft 21 are connected with the first sun gear 11 and the second sun gear 24 through splines respectively. The first output gear 7 is fixedly mounted on the first axle shaft 8 and the second output gear 20 is fixedly mounted on the second axle shaft 23.
First motor 1 connects first motor shaft 2, the output end fixed mounting of first motor shaft 2 has first input gear 3, first primary reduction gear 4 is connected in the meshing of first input gear 3, first primary reduction gear 4 fixed mounting is in the one end of first jackshaft 5, first secondary reduction gear 6 is installed to the other end of first jackshaft 5, first output gear 7 is connected in the meshing of first secondary reduction gear 6, first output gear 7 fixed mounting is on first semi-axis 8, first sun gear 11 is installed to first output semi-axis 8 terminal surface, first sun gear 11 drives first planet wheel 12 and rotates, first ring gear 9 is fixed motionless, first planet wheel 12 drives first planet carrier 10 and rotates, first planet carrier 10 drives first wheel 13 through wheel hub and rotates.
The second motor 14 is connected with a second motor shaft 15, a second input gear 16 is fixedly mounted at the output end of the second motor shaft 15, the second input gear 16 is meshed with a second first-stage reduction gear 17, the second first-stage reduction gear 17 is fixedly mounted at one end of a second intermediate shaft 18, a second-stage reduction gear 19 is mounted at the other end of the second intermediate shaft 18, the second-stage reduction gear 19 is meshed with a second output gear 20, the second output gear 20 is fixedly mounted on a second half shaft 21, a second sun gear 24 is mounted at the end face of the second output half shaft 21, the second sun gear 24 drives a second planet gear 25 to rotate, a second gear ring 22 is fixed and fixed, the second planet gear 25 drives a second planet carrier 23 to rotate, and the second planet carrier 23 drives a second wheel 26 to rotate through a wheel hub.
The invention has the following characteristics: 1. the dual-motor drive is adopted, the left transmission system and the right transmission system are mutually independent and are symmetrically arranged, mechanical connection is avoided, structures such as a mechanical differential are omitted, loss in the energy transfer process is small, the space of a chassis is saved, the weight of the whole bridge is reduced, and the endurance mileage is improved; 2. the independent suspension structure is adopted, so that the inclination and the vibration of the vehicle body can be reduced, the impact force received by the vehicle body is reduced, and the driving comfort is improved; the center of gravity can be lowered, and the driving stability is improved; 3. two-stage speed reduction is adopted, so that the torque is large and the dynamic property is strong; 4. the integrated wheel edge is decelerated, the system integration level is high, the ground clearance of the whole bridge is larger, and the trafficability of the vehicle is improved; the dynamic property of the vehicle is enhanced, the starting acceleration time of the vehicle is reduced, and the climbing capability of the vehicle is enhanced; 5. by adopting distributed driving control, 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 (8)
1. The utility model provides a two motor single-speed second grade deceleration strip wheel limit speed reduction independent suspension parallel shaft electricity drive bridge, includes first motor (1), first semi-axis (8), second semi-axis (21), first wheel limit reduction gear assembly, second wheel limit reduction gear assembly 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 (14) and a second speed reducer assembly, wherein the second motor (14) is installed on the second speed reducer assembly, the second speed reducer assembly comprises a second input gear (16) and a second first-stage speed reducing gear (17) which are meshed with each other, a second-stage speed reducing gear (19) and a second output gear (20) which are meshed with each other, and a second intermediate shaft (18), and the second first-stage speed reducing gear (17) and the second-stage speed reducing gear (19) are arranged on the second intermediate shaft (18); two ends of the first half shaft (8) are respectively connected with the first wheel-side reducer assembly and the first reducer assembly, and two ends of the second half shaft (21) are respectively connected with the first wheel-side reducer assembly and the second reducer assembly; the first half shaft (8), the second half shaft (21), the first motor shaft (2) and the second motor shaft (15) are parallel to each other.
2. The parallel-axis electric drive bridge with the dual-motor single-speed two-stage speed reduction belt and the wheel-side speed reduction independent suspension according to claim 1, is characterized in that: the first motor (1) and the second motor (14) 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 (15) is connected with the second input gear (16) through a spline.
3. The parallel-axis electric drive bridge with the dual-motor single-speed two-stage speed reduction belt and the wheel-side speed reduction independent suspension according to claim 1 or 2, is characterized in that: the first motor (1) and the first reducer assembly are symmetrically arranged on two sides of the total composition of the second motor (14) and the second reducer.
4. The parallel-axis electric drive bridge with the dual-motor single-speed two-stage speed reduction belt and the wheel-side speed reduction independent suspension according to claim 1 or 2, is characterized in that: the first motor (1) and the second motor (14) are driving motors with the same type or different types.
5. The parallel-axis electric drive bridge with the dual-motor single-speed two-stage speed reduction belt and the wheel-side speed reduction independent suspension according to claim 1 or 2, is characterized in that: the first hub reduction gear assembly comprises a first sun gear (11), a first planet gear (12), a first planet carrier (10) and a first gear ring (9), wherein the first sun gear (11) is arranged on the end face of a first half shaft (8); the second wheel-side reducer assembly comprises a second sun gear (24), a second planet gear (25), a second planet carrier (23) and a second gear ring (22), and the second sun gear (24) is mounted on the end face of the second half shaft (21); the half shafts are connected with the sun gears (11, 24) through splines.
6. The parallel-axis electric drive bridge with the dual-motor single-speed two-stage speed reduction belt and the wheel-side speed reduction independent suspension according to claim 1 or 2, is characterized in that: the first output gear (7) is fixedly arranged on a first half shaft (8); the second output gear (20) is fixedly mounted on a second half shaft (23).
7. The parallel-axis electric drive bridge with the dual-motor single-speed two-stage speed reduction belt and the wheel-side speed reduction independent suspension according to claim 1 or 2, is characterized in that: the first motor (1) and the second motor (14) are driving motors with the same model; the first motor (1) and the second motor (14) are coaxially arranged at intervals; the first motor (1) and the first reducer assembly are symmetrically arranged on two sides of the total component of the second motor (14) 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 (15) is connected with the second input gear (16) through a spline; the first half-shaft (8) is connected with a first wheel (13), and the second half-shaft (21) is connected with a second wheel (26); the first hub reduction gear assembly comprises a first sun gear (11), a first planet gear (12), a first planet carrier (10) and a first gear ring (9), wherein the first sun gear (11) is arranged on the end face of a first half shaft (8); the second wheel-side reducer assembly comprises a second sun gear (24), a second planet gear (25), a second planet carrier (23) and a second gear ring (22), and the second sun gear (24) is mounted on the end face of the second half shaft (21); the half shaft is connected with the sun gears (11, 24) through splines; the half shafts are connected with the sun gears (11, 24) through splines.
8. The parallel-axis electric drive bridge with the dual-motor single-speed two-stage speed reduction belt and the wheel-side speed reduction independent suspension according to claim 1 or 2, is characterized in that: the first wheel-side reducer assembly is fixedly arranged on a first wheel (13); the second wheel reduction assembly is fixedly arranged on a second wheel (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910877190.8A CN112519491A (en) | 2019-09-17 | 2019-09-17 | Double-motor single-speed two-stage deceleration strip wheel-side deceleration independent suspension parallel-shaft electric drive bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910877190.8A CN112519491A (en) | 2019-09-17 | 2019-09-17 | Double-motor single-speed two-stage deceleration strip wheel-side deceleration independent suspension parallel-shaft electric drive bridge |
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| Publication Number | Publication Date |
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| CN112519491A true CN112519491A (en) | 2021-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910877190.8A Pending CN112519491A (en) | 2019-09-17 | 2019-09-17 | Double-motor single-speed two-stage deceleration strip wheel-side deceleration independent suspension parallel-shaft electric drive bridge |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113978225A (en) * | 2021-11-18 | 2022-01-28 | 特百佳动力科技有限公司 | Distributed electric drive axle system and vehicle |
| CN114290889A (en) * | 2021-06-30 | 2022-04-08 | 华为数字能源技术有限公司 | Power device and vehicle |
| CN115583142A (en) * | 2022-11-11 | 2023-01-10 | 山东华星精密机械有限公司 | Electric drive axle with double motors for pure electric mine truck |
| CN115593207A (en) * | 2022-11-11 | 2023-01-13 | 山东华星精密机械有限公司（Cn） | Double-motor three-level three-intermediate-shaft transmission wheel-side electric drive axle for mining truck |
| CN116080378A (en) * | 2022-11-11 | 2023-05-09 | 山东华星精密机械有限公司 | Dual-motor three-intermediate-shaft two-stage transmission wheel-side electric drive axle |
| 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 |
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2019
- 2019-09-17 CN CN201910877190.8A patent/CN112519491A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114290889A (en) * | 2021-06-30 | 2022-04-08 | 华为数字能源技术有限公司 | Power device and vehicle |
| CN113978225A (en) * | 2021-11-18 | 2022-01-28 | 特百佳动力科技有限公司 | Distributed electric drive axle system and vehicle |
| 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 |
| CN115583142A (en) * | 2022-11-11 | 2023-01-10 | 山东华星精密机械有限公司 | Electric drive axle with double motors for pure electric mine truck |
| CN115593207A (en) * | 2022-11-11 | 2023-01-13 | 山东华星精密机械有限公司（Cn） | Double-motor three-level three-intermediate-shaft transmission wheel-side electric drive axle for mining truck |
| CN116080378A (en) * | 2022-11-11 | 2023-05-09 | 山东华星精密机械有限公司 | Dual-motor three-intermediate-shaft two-stage transmission wheel-side electric drive axle |
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