CN113928102A - Double-motor two-gear electric drive axle structure - Google Patents
Double-motor two-gear electric drive axle structure Download PDFInfo
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- CN113928102A CN113928102A CN202111335713.XA CN202111335713A CN113928102A CN 113928102 A CN113928102 A CN 113928102A CN 202111335713 A CN202111335713 A CN 202111335713A CN 113928102 A CN113928102 A CN 113928102A
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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
Abstract
The utility model provides a two motor two shelves electric drive axle structures, includes: the first driving motor and the second driving motor are arranged at intervals; the two-gear speed reducing mechanism comprises an input shaft, a first driving gear, a first driven gear, a first intermediate shaft, a second intermediate shaft, a clutch, a brake, a double-star planet row, a second driving gear and a second driven gear; and a differential. The structure adopts the double-motor and parallel shaft structure arrangement, the axial length of an output shaft is reduced, the whole vehicle arrangement of the independent suspension is realized, the high-low gear of the motor is realized at the double-star planetary row after the motor is subjected to one-level speed reduction, the transmission ratio is reduced, and the economical efficiency and the gear shifting comfort of the vehicle are improved.
Description
Technical Field
The invention relates to the field of new energy vehicle transmission, in particular to a double-motor two-gear electric drive axle structure.
Background
Electrically driven new energy vehicles are a world trend and a future direction of development. Drive axle is as a common drive mechanism, the wide application is in the transmission field of machinery and vehicle, for the development of adaptation new energy automobile technique, the electric drive axle by driving motor driven has appeared, the electric drive axle on the market is mostly one-gear electric drive axle, the energy consumption is higher, can't satisfy more complicated variable speed requirement, and the structure of two grades of electric drive axles on the market is complicated, do not break away from bevel gear main reducer's structural limitation, built-in structure is compact inadequately, and is with high costs, and is bulky, be difficult for arranging in limited installation space, it realizes whole car arrangement to be difficult to be applied to the vehicle of independent suspension, and it is relatively poor to shift the travelling comfort.
Therefore, there is a need to develop a dual-motor two-gear electric drive axle structure to solve one or more of the above-mentioned technical problems.
Disclosure of Invention
To solve at least one of the above technical problems, according to an aspect of the present invention, there is provided a dual-motor two-gear electric drive axle structure, including:
the first driving motor and the second driving motor are arranged at intervals;
the two-gear speed reducing mechanism comprises an input shaft, a first driving gear, a first driven gear, a first intermediate shaft, a second intermediate shaft, a clutch, a brake, a double-star planetary gear row, a second driving gear and a second driven gear, wherein two ends of the input shaft are respectively connected with the first driving motor and the second driving motor, the first driving gear is connected with the input shaft, the first driven gear is connected with the first intermediate shaft and meshed with the first driving gear, the double-star planetary gear row comprises a sun gear, a first planetary gear, a second planetary gear, a planetary carrier and a gear ring, the sun gear is connected with the first intermediate shaft, a first end of the clutch is connected with the intermediate shaft, a second end of the clutch is sequentially connected with the brake and a driving axle shell, the clutch is positioned between the first driven gear and the sun gear, and the planetary carrier is connected with the second end of the clutch and the brake, the second intermediate shaft can be sleeved in the first intermediate shaft in a relatively rotating manner and penetrates through the first intermediate shaft, and the gear ring and the second driving gear are connected to the second intermediate shaft; and
the differential mechanism comprises a differential mechanism shell, a differential lock, a first output half shaft and a second output half shaft, wherein the differential lock is connected between the differential mechanism shell and the second output half shaft;
the input shaft, the first intermediate shaft and the first output half shaft are arranged in parallel at intervals, the first driving gear is smaller than the first driven gear, and the second driving gear is smaller than the second driven gear.
According to still another aspect of the present invention, the first drive motor and the second drive motor are disposed on both end sides of the input shaft and are symmetrically disposed.
According to still another aspect of the present invention, the first intermediate shaft and the second intermediate shaft are disposed in a space defined by adjacent side surfaces and upper and lower end surfaces of the first drive motor and the second drive motor with a predetermined interval provided between both ends thereof and the first drive motor and the second drive motor, respectively.
According to still another aspect of the present invention, the input shaft is provided in the middle of the first and second drive motors, and a distance between the input shaft and the second intermediate shaft is less than half of a length of the first and second drive motors in a direction perpendicular to the input shaft.
According to yet another aspect of the present invention, the distance between the first and second output half shafts and the input shaft is greater than half the length of the first and second drive motors in a direction perpendicular to the input shaft.
According to still another aspect of the present invention, the first driven gear, the clutch and the third sun gear are arranged in this order along a first intermediate shaft, and the clutch and the brake are arranged in a direction perpendicular to the first intermediate shaft.
According to still another aspect of the present invention, the first driven gear, the clutch, the third sun gear, and the second driving gear are sequentially arranged in a direction along a second intermediate shaft, the first driving gear and the first driven gear are arranged in a direction perpendicular to the input shaft, the clutch and the brake are arranged in a direction perpendicular to the first intermediate shaft, and the second driving gear and the second driven gear are arranged in a direction perpendicular to the second intermediate shaft.
According to another aspect of the present invention, the first driving gear, the first driven gear, the first intermediate shaft, the second intermediate shaft, the clutch, the brake, the double planetary gear set, the second driving gear and the second driven gear, the differential case, and the differential lock are disposed in a space defined by two extension planes in which adjacent sides of the first driving motor and the second driving motor are respectively located.
According to a further aspect of the invention, the first planet wheel and the second planet wheel of the double planetary gear set mesh with the sun wheel and the ring gear, respectively, and the first planet wheel and the second planet wheel mesh with each other.
According to yet another aspect of the present invention, the first and second output half shafts are disposed at a predetermined distance from the first and second drive motors.
The invention can obtain one or more of the following technical effects:
1. the original bevel gear structure of the drive axle is simplified, and the drive axle is changed into a two-gear speed reducing mechanism arranged in the direction vertical to the input shaft, so that the arrangement of the whole vehicle of an independently suspended vehicle is facilitated;
2. the double-motor and parallel-shaft structural arrangement is adopted, the axial length of a motor output shaft (an input shaft of a two-gear speed reducing mechanism) is reduced, the axial arrangement space is reduced, the whole vehicle arrangement of an independently suspended vehicle is facilitated, the high and low gears of the motor are realized in the double-star planetary row after the motor is subjected to first-stage speed reduction realized by a first driving gear and a first driven gear, the rotating speed difference of planetary row components during gear shifting is reduced, and the service life of a clutch and a brake is prolonged;
3. the double-motor two-gear electric drive axle has stronger power, simplifies and compactors the whole structure, especially can shorten the arrangement distance in the direction of the input shaft, and realizes lower cost and higher performance;
4. the double-star planetary gear train is designed to reduce the inter-ratio between high-low gear transmission ratios, reduce the impact of gear shifting and improve the comfort of the vehicle.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic diagram of a two-motor two-gear electric drive axle structure according to a preferred embodiment of the present invention.
Detailed Description
The best mode for carrying out the present invention will be described in detail with reference to the accompanying drawings, wherein the detailed description is for the purpose of illustrating the invention in detail, and is not to be construed as limiting the invention, as various changes and modifications can be made therein without departing from the spirit and scope thereof, which are intended to be encompassed within the appended claims.
Example 1
According to a preferred embodiment of the present invention, referring to fig. 1, there is provided a dual-motor two-gear electric drive axle structure 500, characterized by comprising:
a first driving motor 501 and a second driving motor 502 which are arranged at intervals;
two-gear speed reducing mechanism, including input shaft 503, first driving gear 504, first driven gear 505, first jackshaft, second jackshaft, clutch 511, stopper 512, two-star planetary row, second driving gear 513 and second driven gear 514, first driving motor 501 and second driving motor 502 are connected respectively to input shaft 503 both ends, first driving gear 504 is connected in input shaft 503, first driven gear 505 is connected in the first jackshaft and with the meshing of first driving gear 504, two-star planetary row includes sun gear 506, first planet wheel 507, second planet wheel 508, planet carrier 509 and ring gear 510, sun gear 506 is connected in the first jackshaft, the first end of clutch 511 is connected the jackshaft and the second end connects gradually stopper 512 and transaxle casing, clutch 511 is located between first driven gear 505 and sun gear 506, the planet carrier 509 is connected to the second end of the clutch 511 and the brake 512, the second intermediate shaft is relatively rotatably sleeved in the first intermediate shaft and penetrates through the first intermediate shaft, and the ring gear 510 and the second driving gear 513 are connected to the second intermediate shaft; and
a differential 515 comprising a differential case, a differential lock 516, a first output half shaft 518 and a second output half shaft 517, wherein the differential lock 516 is connected between the differential case and the second output half shaft 517, the outer circumference of the differential case is sleeved with the second driven gear 514, and the second output half shaft 517 is coaxial with the first output half shaft 518 and has an opposite output direction;
the input shaft 503, the first intermediate shaft and the first output half shaft 518 are arranged in parallel with a space therebetween, the first driving gear 504 is smaller than the first driven gear 505, and the second driving gear 513 is smaller than the second driven gear 514.
Advantageously, the first driving gear 504 and the first driven gear 505 form a first pair of reduction gears. The second driving gear 513 and the second driven gear 514 form a second pair of reduction gears.
According to still another preferred embodiment of the present invention, the first driving motor 501 and the second driving motor 502 are disposed at both end sides of the input shaft 503 and are symmetrically disposed. Advantageously, the length of the input shaft 503 defines the range of arrangement of the two-speed reduction mechanism and the differential case, differential lock 516, resulting in an overall compact layout.
According to still another preferred embodiment of the present invention, the first and second countershafts are disposed in the space defined by the adjacent side faces 5011, 5021 and the upper and lower end faces 5023, 5022 of the first and second driving motors 501, 502 with a predetermined interval provided between both ends and the first and second driving motors 501, 502, respectively. It is understood that the first and second countershafts are located, for example, above the lower end face 5022 of the second drive motor 502.
According to another preferred embodiment of the present invention, the input shaft 503 is disposed in the middle of the first driving motor 501 and the second driving motor 502, and the distance between the input shaft 503 and the second intermediate shaft is less than half of the length of the first driving motor 501 and the second driving motor 502 in the direction perpendicular to the input shaft 503.
According to a further preferred embodiment of the present invention, the distance between said first and second output half shafts 518, 517 and said input shaft 503 is greater than half the length of the first and second drive motors 501, 502 in a direction perpendicular to said input shaft 503. Advantageously, first output half shaft 518 and second output half shaft 517 are located, for example, below lower end face 5022 of second drive motor 502, without passing through the motor body.
According to still another preferred embodiment of the present invention, the first driven gear, the clutch 511 and the third sun gear 506 are sequentially disposed along a first intermediate shaft, and the clutch 511 and the brake 512 are disposed in a direction perpendicular to the first intermediate shaft.
According to still another preferred embodiment of the present invention, the first driven gear, the clutch 511, the third sun gear 506 and the second driving gear are sequentially arranged along a direction of a second intermediate shaft, the first driving gear and the first driven gear are arranged along a direction perpendicular to the input shaft 503, the clutch 511 and the brake 512 are arranged along a direction perpendicular to the first intermediate shaft, and the second driving gear and the second driven gear are arranged along a direction perpendicular to the second intermediate shaft.
According to still another preferred embodiment of the present invention, the first driving gear 504, the first driven gear 505, the first countershaft, the second countershaft, the clutch 511, the brake 512, the double planetary gear set, the second driving gear 513 and the second driven gear 514, the differential case, and the differential lock 516 are all disposed in a space defined by two extension planes in which the adjacent side faces 5011, 5021 of the first driving motor 501 and the second driving motor 502 are respectively disposed.
According to a further preferred embodiment of the invention, the first 507 and second 508 planet wheels of the double row mesh with the sun 506 and the ring 510, respectively, the first 507 and second 508 planet wheels meshing with each other.
According to a further preferred embodiment of the present invention, said first output half shaft 518 and second output half shaft 517 are arranged at a predetermined distance from said first driving motor 501 and second driving motor 502.
According to another preferred embodiment of the present invention, there is also provided a parallel shaft type two-gear electric drive axle structure 500, which includes two driving motors, two-gear speed reducing mechanism and a differential 515, wherein output shafts of the two driving motors are connected with an input shaft 503 of the two-gear speed reducing mechanism. A pair of reduction gears is arranged between an input shaft 503 and a secondary shaft of the two-gear reduction mechanism, power enters the secondary shaft with the double-star planetary mechanism through the pair of reduction gears, and the power enters the double-star planetary row through a frame of the double-star planetary mechanism. The double planetary row structure comprises a sun gear 506, a plurality of pairs of planetary gears and a frame, wherein each pair of planetary gears of the double planetary row are meshed with each other, a clutch 511 is arranged between the sun gear 506 and the frame of the planetary row, a brake 512 is arranged between the frame and the shell, and the clutch 511 and the brake 512 work respectively to realize the high-low gear function of the double planetary row. The double-star planet row outputs power to a pair of reduction gears between the two shafts and the three shafts through the gear ring 510, further reduces the output rotating speed and improves the output torque to meet the power requirement of the whole vehicle. Differential 515 is installed on a three shaft of the two-gear speed reducing mechanism, a three-shaft gear of the speed reducing mechanism is connected with a differential shell, the differential 515 comprises two output ends which are respectively connected with a left output half shaft and a right output half shaft, the requirement of torque distribution of wheels on the left side and the right side when the vehicle runs on different road surfaces can be met, and differential locks 516 can also be installed on the differential 515 to meet the running requirement of the vehicle on difficult and complex road surfaces.
Preferably, two driving motors are simultaneously input to a first shaft of the two-gear speed reducer, the speed reducer with two gears can be formed through the respective operations of the two-shaft two-star planet row clutch 511 and the brake 512, and then the electric drive axle system with two gears can be realized through the second-stage speed reduction from the two shafts to the three shafts. According to the invention, the transmission route is switched by the clutch 511 or the brake 512, so that the speed reducing mechanism realizes two speed reducing gears, and further, the output rotating speed range of the driving motor is matched, stepless speed change is realized, the two output half shafts are mutually associated by utilizing the differential 515, the original bevel gear structure of the driving axle is simplified on the arrangement of the whole vehicle, the combination of the cylindrical gear with parallel shafts and the double-star planetary row is changed, the space requirement on the arrangement of the whole vehicle is reduced, and the independent distributed driving of the front axle and the rear axle of the vehicle is realized.
According to another preferred embodiment of the present invention, there is also provided a parallel shaft type two-gear electric drive axle structure 500, which is characterized by comprising two driving motors, a two-gear speed reducing mechanism and a differential 515, wherein the output shafts of the driving motors are simultaneously connected with the input shafts 503 of the two-gear speed reducing mechanism, the output ends of the two-gear speed reducing mechanism are connected with the input end of the differential 515, the differential 515 comprises two output ends, one output end of the differential 515 is connected with a left output half shaft, and the other output end of the differential 515 is connected with a right output half shaft;
the output shafts of the two driving motors are connected to the input shaft 503 of the two-gear speed reducing mechanism together, and a high gear and a low gear are selected by using the double-star planetary gear;
the right output half shaft and the left output half shaft mutually have reverse action and the axle center is positioned on the same straight line.
Preferably, the two-gear speed reducing mechanism comprises an input shaft 503, a double-star planet row, a clutch 511, a brake 512, a first-shaft driving gear and a second-shaft driven gear, and a second-shaft driving gear and a third-shaft driven gear; the input shaft 503 of the two-gear speed reduction mechanism has a structure with two-end input, and can be simultaneously connected with two driving motors.
Preferably, the rotation speeds of the two motors are synchronized through the coupling of the input shaft 503, and a mode of single control of double-motor torque can be selected during control, so that the controllable requirement of the output torque of the vehicle is realized.
Preferably, the driving gear of the input shaft 503 is connected to the input shaft 503 to transmit the power of the two motors.
Preferably, the high-low gear shifting of the two-gear speed reducer is realized by operating the clutch 511 and the brake 512 to change the transmission state of the double-star planetary row.
Preferably, the type of differential 515 may be selected according to the user's needs, with one side output of the differential 515 connected to the left output half shaft and the other side output of the differential 515 connected to the right output half shaft.
Preferably, the type of the differential lock 516 can be selected according to the requirements of the user, such as: a face tooth differential lock 516 or a wet clutch 511 differential lock 516.
Advantageously, the driving motors are arranged on two sides of the input shaft 503, so that the axial space of the electric drive axle in three shafts is reduced, the whole axial arrangement space of the electric drive axle is saved, and the overall arrangement of the electric drive axle on an independently suspended vehicle is more convenient.
According to still another preferred embodiment of the present invention, there is also provided a two-motor two-gear electric drive axle, comprising a drive motor a501, a drive motor B502, a two-gear reduction mechanism and a differential 515, wherein the two-gear reduction mechanism comprises an input shaft 503, an input shaft driving gear 504, a two-shaft driven gear 505, a planet row sun gear 506, a planet row planet gear a507, a planet row planet gear B508, a planet row frame 509, a planet row ring gear 510, a planet row clutch 511, a planet row brake 512, a two-shaft driving gear 513 and a three-shaft driven gear 514, and the differential comprises a cross shaft differential 515 and a differential lock 516;
the output shafts of the driving motor A501 and the driving motor B502 are both connected with the input shaft 503, the planet row clutch 511 is operated and combined through a hydraulic component, the brake 215 is separated, the two-gear speed reducing mechanism is in a high gear, power is transmitted to the secondary driven gear 505, the planet row sun gear 506, the planet row clutch 511, the planet row frame 509, the planet row planet gear A507, the planet row planet gear B508, the planet ring gear 510, the secondary driving gear 513 and the three-shaft driven gear 514 through the input driving gear 504, the double planet rows are in an integral rotation state, and the secondary driving gear 513 and the three-shaft driven gear 514 are always meshed with each other; the planet row clutch 511 is operated and separated through a hydraulic element, the planet row brake 512 is combined, the two-gear speed reducing mechanism is in a low gear, power is transmitted to the biaxial driven gear 505, the planet row sun gear 506, the planet row planet gear A507, the planet row planet gear B508, the planet row gear ring 510, the biaxial driving gear 513 and the triaxial driven gear 514 through the input driving gear 504, the double-planet row frame is not rotated and in a speed reducing state, and the biaxial driving gear 513 and the triaxial driven gear 514 are always meshed with each other; the three-shaft driven gear 514 inputs power to a housing of a differential 515. The differential 515 is connected to a left output half shaft 517 and a right output half shaft 518, the other end of the left output half shaft 517 is connected to the differential case through a differential lock 516, and the left and right output half shafts are locked at the same rotation speed after the differential lock 516 is combined.
Preferably, in this embodiment, in order to save the axial arrangement space of the drive axle, the drive motor a501 and the drive motor B502 are arranged in parallel and coaxially, so that the axial spaces at two ends of three shafts of the electric drive axle are reduced, and the distance between the left output half shaft 517 and the right output half shaft 518 is shortened, which is beneficial to the arrangement of the electric drive axle on the vehicle with independent suspension. Meanwhile, the left output half shaft 517 and the right output half shaft 518 are arranged in a reverse direction, and the centers of the two half shafts are located on the same straight line.
Preferably, the differential lock 516 may be a wet clutch differential lock in this embodiment, and a normal end differential lock may be used in other embodiments.
Preferably, in this example, the electric transaxle is in a neutral state when the planetary row clutch 511 and the planetary row brake 512 are both in a disengaged state.
Preferably, in this example, the driving gear 504 and the biaxial driven gear 505 are always engaged with each other, and the biaxial driving gear 513 and the triaxial driven gear 514 are always engaged with each other.
After driving motor converts the electrical energy to mechanical energy, get into differential mechanism 515 after two speed reduction gears conversion, differential mechanism 515 realizes through a cross axle bevel gear structure, and this differential mechanism can realize controlling 1 between the wheel: the torque output is 1, the requirement that the torque output of the left wheel and the torque output of the right wheel of the vehicle are consistent through different road surfaces is met, the differential mechanism can be locked through the differential lock 516, and the difficulty escaping requirement of the vehicle on the difficult road surface is met.
The invention can obtain one or more of the following technical effects:
1. the original bevel gear structure of the drive axle is simplified, and the drive axle is changed into a two-gear speed reducing mechanism arranged in the direction vertical to the input shaft, so that the arrangement of the whole vehicle of an independently suspended vehicle is facilitated;
2. the double-motor and parallel-shaft structural arrangement is adopted, the axial length of a motor output shaft (an input shaft of a two-gear speed reducing mechanism) is reduced, the axial arrangement space is reduced, the whole vehicle arrangement of an independently suspended vehicle is facilitated, the high and low gears of the motor are realized in the double-star planetary row after the motor is subjected to first-stage speed reduction realized by a first driving gear and a first driven gear, the rotating speed difference of planetary row components during gear shifting is reduced, and the service life of a clutch and a brake is prolonged;
3. the double-motor two-gear electric drive axle has stronger power, simplifies and compactors the whole structure, especially can shorten the arrangement distance in the direction of the input shaft, and realizes lower cost and higher performance;
4. the double-star planetary gear train is designed to reduce the inter-ratio between high-low gear transmission ratios, reduce the impact of gear shifting and improve the comfort of the vehicle.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A two shelves of electric drive axle structures of bi-motor, its characterized in that includes:
the first driving motor and the second driving motor are arranged at intervals;
the two-gear speed reducing mechanism comprises an input shaft, a first driving gear, a first driven gear, a first intermediate shaft, a second intermediate shaft, a clutch, a brake, a double-star planetary gear row, a second driving gear and a second driven gear, wherein two ends of the input shaft are respectively connected with the first driving motor and the second driving motor, the first driving gear is connected with the input shaft, the first driven gear is connected with the first intermediate shaft and meshed with the first driving gear, the double-star planetary gear row comprises a sun gear, a first planetary gear, a second planetary gear, a planetary carrier and a gear ring, the sun gear is connected with the first intermediate shaft, a first end of the clutch is connected with the intermediate shaft, a second end of the clutch is sequentially connected with the brake and a driving axle shell, the clutch is positioned between the first driven gear and the sun gear, and the planetary carrier is connected with the second end of the clutch and the brake, the second intermediate shaft can be sleeved in the first intermediate shaft in a relatively rotating manner and penetrates through the first intermediate shaft, and the gear ring and the second driving gear are connected to the second intermediate shaft; and
the differential mechanism comprises a differential mechanism shell, a differential lock, a first output half shaft and a second output half shaft, wherein the differential lock is connected between the differential mechanism shell and the second output half shaft;
the input shaft, the first intermediate shaft and the first output half shaft are arranged in parallel at intervals, the first driving gear is smaller than the first driven gear, and the second driving gear is smaller than the second driven gear.
2. The two-motor two-speed electric drive axle structure according to claim 1, wherein the first and second drive motors are arranged at both end sides of the input shaft and symmetrically arranged.
3. The dual-motor two-speed electric drive axle structure according to claim 1, wherein the first intermediate shaft and the second intermediate shaft are disposed in a space defined by adjacent side surfaces and upper and lower end surfaces of the first drive motor and the second drive motor with a predetermined interval provided between each end thereof and the first drive motor and the second drive motor, respectively.
4. The two-motor two-speed electric drive axle structure according to any one of claims 1 to 3, wherein the input shaft is disposed in the middle of the first and second drive motors, and the distance between the input shaft and the second intermediate shaft is less than half of the length of the first and second drive motors in the direction perpendicular to the input shaft.
5. The two-motor two-speed electric drive axle structure of claim 4, wherein the distance between the first and second output half shafts and the input shaft is greater than half the length of the first and second drive motors in a direction perpendicular to the input shaft.
6. The dual-motor two-speed electric transaxle structure of claim 4 wherein the first driven gear, the clutch and the third sun gear are sequentially disposed along a first countershaft, and the clutch and the brake are disposed in a direction perpendicular to the first countershaft.
7. The dual-motor two-speed electric transaxle structure of claim 4 wherein the first driven gear, the clutch, the third sun gear, and the second driving gear are sequentially disposed along a direction of the second countershaft, the first driving gear and the first driven gear are disposed along a direction perpendicular to the input shaft, the clutch and the brake are disposed along a direction perpendicular to the first countershaft, and the second driving gear and the second driven gear are disposed along a direction perpendicular to the second countershaft.
8. The dual-motor two-speed electric transaxle structure of claim 7 wherein the first driving gear, the first driven gear, the first countershaft, the second countershaft, the clutch, the brake, the double planetary gear set, the second driving gear and the second driven gear, the differential case, and the differential lock are disposed in a space defined by two extension planes on which adjacent sides of the first driving motor and the second driving motor respectively lie.
9. The dual-motor two-gear electric drive axle structure of claim 4, wherein the first planet wheel and the second planet wheel of the dual-planet-row are meshed with the sun wheel and the ring gear respectively, and the first planet wheel and the second planet wheel are meshed with each other.
10. The two-motor two-speed electric transaxle structure of claim 9 wherein the first and second output half shafts are disposed a predetermined distance from the first and second drive motors.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111335713.XA CN113928102A (en) | 2021-11-11 | 2021-11-11 | Double-motor two-gear electric drive axle structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111335713.XA CN113928102A (en) | 2021-11-11 | 2021-11-11 | Double-motor two-gear electric drive axle structure |
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| CN113928102A true CN113928102A (en) | 2022-01-14 |
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| CN202111335713.XA Pending CN113928102A (en) | 2021-11-11 | 2021-11-11 | Double-motor two-gear electric drive axle structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115234641A (en) * | 2022-08-10 | 2022-10-25 | 一汽解放汽车有限公司 | Speed reducer assembly and drive axle assembly |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112519496A (en) * | 2019-09-17 | 2021-03-19 | 东风德纳车桥有限公司 | Independent suspension electric drive axle with double motors and double-speed parallel shafts |
| CN213291964U (en) * | 2020-07-31 | 2021-05-28 | 韶关市广控机械传动技术有限公司 | Two grades of transaxles of bi-motor |
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| WO2018087375A2 (en) * | 2016-11-14 | 2018-05-17 | Borgwarner Sweden Ab | Vehicle driveline system |
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