CN220562527U - Double-motor coaxial electric drive axle - Google Patents
Double-motor coaxial electric drive axle Download PDFInfo
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- CN220562527U CN220562527U CN202321147736.2U CN202321147736U CN220562527U CN 220562527 U CN220562527 U CN 220562527U CN 202321147736 U CN202321147736 U CN 202321147736U CN 220562527 U CN220562527 U CN 220562527U
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- 230000005540 biological transmission Effects 0.000 claims description 12
- 230000009977 dual effect Effects 0.000 claims description 6
- 230000009194 climbing Effects 0.000 abstract description 3
- 238000011084 recovery Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
The utility model discloses a double-motor coaxial electric drive axle, which comprises a first drive motor, a second drive motor, an intermediate shaft, a half shaft and a differential mechanism, wherein the first drive motor is connected with a first driving gear; the intermediate shaft is further provided with a main reduction driving gear, the main reduction driving gear is meshed with the main reduction driven gear, the differential mechanism is connected with the main reduction driven gear through a differential mechanism shell, the half shaft comprises a first half shaft and a second half shaft, and two ends of the differential mechanism are connected with wheels through the first half shaft and the second half shaft respectively. The utility model meets the requirements of high speed, high power, high load or high climbing trafficability of the vehicle by combining two motors; the flexible and changeable application of different occasions improves the efficiency, reduces the cost and solves the problem of space arrangement.
Description
Technical Field
The utility model relates to an electric drive axle, in particular to a coaxial electric drive axle with double motors.
Background
Existing electric only vehicles typically use single motor single stage reduction drive systems that, because of the power limitations of the single motor, require a large motor if the vehicle conditions are fully met, while requiring an adaptive high power controller. The high-power motor and the controller have higher cost and bring difficulty in arrangement. Therefore, it is necessary to provide a dual-motor coaxial electric drive axle which can meet the control requirements of working conditions such as high power and the like, reduce the cost and meet the arrangement requirements of a small space.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a double-motor coaxial electric drive axle and a vehicle power system comprising the same, which can meet the control requirements of working conditions such as high power and the like, reduce the cost and meet the arrangement requirements of a small space.
The technical scheme adopted by the utility model for solving the technical problems is to provide a double-motor coaxial electric drive axle, which comprises a first drive motor, a second drive motor, an intermediate shaft, a half shaft and a differential mechanism, wherein the first drive motor is connected with a first driving gear, the second drive motor is connected with a second driving gear, and the intermediate shaft is provided with a first driven gear and a second driven gear which are meshed with the first driving gear and the second driving gear in a one-to-one correspondence manner; the intermediate shaft is further provided with a main reduction driving gear, the main reduction driving gear is meshed with a main reduction driven gear, the differential mechanism is connected with the main reduction driven gear, the half shaft comprises a first half shaft and a second half shaft, and two ends of the differential mechanism are connected with wheels through the first half shaft and the second half shaft respectively.
Further, the first driving gear is sleeved on the first half shaft in a hollow mode, and the first driving gear and an output shaft of the first driving motor are coaxially arranged; the second driving gear is sleeved on the second half shaft in a hollow mode, and the second driving gear and an output shaft of the second driving motor are coaxially arranged.
Further, the output shaft of the first driving motor and the output shaft of the second driving motor are coincident with the central axis of the first half shaft and the central axis of the second half shaft and are suitable for being in transmission connection with different wheels.
Further, the differential comprises a differential housing, a first side gear, a second side gear and two planetary gears, wherein the differential housing is fixedly connected with the driving and driven gears; the first half-shaft gear is positioned in the differential shell and is in transmission connection with the first half-shaft; the second side gear is positioned in the differential housing and is in transmission connection with the second side gear; the two planetary gears are positioned in the differential mechanism shell and meshed with the first half shaft gear and the second half shaft gear respectively, the planetary gears revolve around the central axis of the first half shaft and rotate around the rotation axis of the planetary gears, and the rotation axis of the planetary gears is perpendicular to the central axis of the first half shaft.
Further, the driving and driven gears are fixedly coupled with the differential housing.
Compared with the prior art, the utility model has the following beneficial effects: the double-motor coaxial electric drive axle provided by the utility model adopts double-motor drive, the first drive motor and the second drive motor respectively output power to the first driven gear and the second driven gear through the first drive gear and the second drive gear, then the power is transmitted to the main driven gear through the main driven gear on the intermediate shaft, and the power is distributed to the first half shaft and the second half shaft through the differential mechanism, so that the wheels are driven to rotate; the requirements of high speed, high power, high load or high climbing trafficability of the vehicle are met by combining two motors; when the load is light in the vehicle, the motor can work, so that the electric quantity loss is reduced; the double-motor braking can also be used for recovering energy, so that the recovery efficiency is improved, and the endurance is enhanced; the method is flexible and changeable and can be applied to different occasions, so that the efficiency is improved, and the cost is reduced; meanwhile, the coaxial structural arrangement of the two motors and the two half shafts greatly saves the arrangement space on the vehicle.
Drawings
FIG. 1 is a schematic diagram of a dual motor coaxial electric drive axle according to an embodiment of the present utility model;
fig. 2 is a schematic diagram of a differential connection in accordance with an embodiment of the present utility model.
In the figure:
1. a wheel; 2. a first driving motor; 3. a first drive gear; 4. a first driven gear; 5. a main reduction driving gear; 6. a second driven gear; 7. an intermediate shaft; 8. a second drive gear; 9. a second driving motor; 10. a first half shaft; 11. a driving and subtracting driven gear; 12. a second half shaft; 13. a differential; 131. a differential case; 132. a first half-shaft gear; 133. a second side gear; 134. a planetary gear.
Detailed Description
The utility model is further described below with reference to the drawings and examples.
Fig. 1 is a schematic diagram of a dual motor coaxial electric drive axle in accordance with an embodiment of the present utility model.
Referring to fig. 1, a dual-motor coaxial electric drive axle of the embodiment of the present utility model includes a first driving motor 2, a second driving motor 9, a middle shaft 7, a half shaft and a differential 13, wherein the first driving motor 2 is connected with a first driving gear 3, the second driving motor 9 is connected with a second driving gear 8, and the middle shaft 7 is provided with a first driven gear 4 and a second driven gear 6 which are meshed with the first driving gear 3 and the second driving gear 8 in a one-to-one correspondence manner; the intermediate shaft 7 is further provided with a main reduction driving gear 5, the main reduction driving gear 5 is meshed with a main reduction driven gear 11, the differential 13 is connected with the main reduction driven gear 11, the half shafts comprise a first half shaft 10 and a second half shaft 12, and two ends of the differential 13 are respectively connected with the wheels 1 through the first half shaft 10 and the second half shaft 12.
Specifically, the first driving gear 3 is sleeved on the first half shaft 10 in an empty mode, and the first driving gear 3 and the output shaft of the first driving motor 2 are coaxially arranged; the second driving gear 8 is sleeved on the second half shaft 12, and the second driving gear 8 and the output shaft of the second driving motor 9 are coaxially arranged. The output shaft of the first drive motor 2 and the output shaft of the second drive motor 9 both coincide with the central axis of the first half shaft 10 and the central axis of the second half shaft 12.
Referring to fig. 2, in the dual-motor coaxial electric drive axle of the embodiment of the present utility model, the differential 13 includes a differential housing 131, a first side gear 132, a second side gear 133, and two planetary gears 134, and the differential housing 131 is fixedly coupled with the driving and driven gears 11; the first half shaft gear 132 is positioned in the differential housing 131 and is in transmission connection with the first half shaft 10; the second side gear 133 is located within the differential housing 131 and is in driving connection with the second half shaft 12; two planetary gears 134 are located in the differential case 131, and the planetary gears 134 are respectively engaged with the first side gear 132 and the second side gear 133, the planetary gears 134 revolve around the central axis of the first half shaft 10 and spin around their own rotation axes, and the rotation axes of the planetary gears 134 are perpendicular to the central axis of the first half shaft 10. Preferably, the driving and driven gears 11 are fixedly coupled with the differential case 131.
The double-motor coaxial electric drive axle provided by the embodiment of the utility model has the following working modes when in actual use: a drive mode and a braking energy recovery mode; the driving modes include a first motor driving mode, a second motor driving mode, and a dual motor driving mode. The operating mode and motor status are shown in table 1 below:
table 1 working mode and motor status table
First motor drive mode: the first drive motor 2 is in a drive state and the second drive motor 9 is in an idle state; the power of the first driving motor 2 is transmitted to the first half shaft 10 and the second half shaft 12 through the first driving gear 3, the first driven gear 4, the intermediate shaft 7, the main reduction driving gear 5, the main reduction driven gear 11 and the differential 13 in order to drive the wheels 1 to rotate.
Second motor drive mode: the first drive motor 2 is in an idle state and the second drive motor 9 is in a driving state; the power of the second driving motor 2 is transmitted to the first half shaft 10 and the second half shaft 12 through the second driving gear 8, the second driven gear 6, the intermediate shaft 7, the main reduction driving gear 5, the main reduction driven gear 11 and the differential 13 in order to drive the wheels 1 to rotate.
Dual motor drive mode: the first drive motor 2 and the second drive motor 9 are both in a driven state; the power of the first driving motor 2 is transmitted to the intermediate shaft 7 through the first driving gear 3 and the first driven gear 4 in sequence; meanwhile, the power of the second driving motor 2 is transmitted to the intermediate shaft 7 through the second driving gear 8 and the second driven gear 6 in sequence; the power of the first driving motor 2 and the power of the second driving motor 9 are sequentially transmitted to the first half shaft 10 and the second half shaft 12 through the main reduction driving gear 5, the main reduction driven gear 11 and the differential 13 after the intermediate shaft 7 is overlapped, so as to drive the wheels 1 to rotate.
Double motor braking energy recovery mode: the first driving motor 2 and the second driving motor 9 both perform braking energy recovery, the power transmission mode of the first driving motor 2 and the second driving motor 9 is identical to the double-motor driving mode, and only the power transmission direction is opposite to the double-motor driving mode.
First electromechanical energy recovery mode: the first driving motor 2 performs braking energy recovery, the second driving motor 9 idles, the power transmission mode of the first driving motor 2 is identical to that of the first motor driving mode, and only the power transmission direction is opposite to that of the first motor driving mode.
Second electromechanical energy recovery mode: the first driving motor 2 idles, the second driving motor 9 recovers braking energy, the power transmission mode of the second driving motor 9 is identical to that of the second driving motor, and only the power transmission direction is opposite to that of the second driving motor.
In summary, the dual-motor coaxial electric drive axle of the embodiment of the present utility model adopts dual-motor driving, the first driving motor 2 and the second driving motor 9 respectively output power to the first driven gear 4 and the second driven gear 6 through the first driving gear 3 and the second driving gear 8, then transmit power to the main reducing driven gear 11 through the main reducing driving gear 5 on the intermediate shaft 7, and distribute power to the first half shaft 10 and the second half shaft 12 through the differential 13, so as to drive the wheel 1 to rotate; the requirements of high speed, high power, high load or high climbing trafficability of the vehicle are met by combining two motors; when the load is light in the vehicle, the motor can work, so that the electric quantity loss is reduced; the double-motor braking can also be used for recovering energy, so that the recovery efficiency is improved, and the endurance is enhanced; the method is flexible and changeable and can be applied to different occasions, so that the efficiency is improved, and the cost is reduced; meanwhile, the coaxial structural arrangement of the two motors and the two half shafts greatly saves the arrangement space on the vehicle.
While the utility model has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (5)
1. The double-motor coaxial electric drive axle is characterized by comprising a first drive motor, a second drive motor, an intermediate shaft, a half shaft and a differential mechanism, wherein the first drive motor is connected with a first driving gear, the second drive motor is connected with a second driving gear, and the intermediate shaft is provided with a first driven gear and a second driven gear which are meshed with the first driving gear and the second driving gear in one-to-one correspondence; the middle shaft is further provided with a main reduction driving gear, the main reduction driving gear is meshed with a main reduction driven gear, the differential mechanism is connected with the main reduction driven gear through a differential mechanism shell, the half shaft comprises a first half shaft and a second half shaft, and two ends of the differential mechanism are connected with wheels through the first half shaft and the second half shaft respectively.
2. The dual-motor coaxial electric drive axle of claim 1, wherein the first drive gear is hollow and sleeved on the first half shaft, and the first drive gear is coaxially arranged with an output shaft of the first drive motor; the second driving gear is sleeved on the second half shaft in a hollow mode, and the second driving gear and an output shaft of the second driving motor are coaxially arranged.
3. The dual motor coaxial electric drive axle of claim 1, wherein the output shaft of the first drive motor and the output shaft of the second drive motor each coincide with the central axis of the first half shaft and the central axis of the second half shaft.
4. The twin motor coaxial electric drive axle of claim 1, wherein the differential includes a differential housing fixedly coupled with the driving and driven gears, a first side gear, a second side gear, and two planetary gears; the first half-shaft gear is positioned in the differential shell and is in transmission connection with the first half-shaft; the second side gear is positioned in the differential housing and is in transmission connection with the second side gear; the two planetary gears are positioned in the differential mechanism shell and meshed with the first half shaft gear and the second half shaft gear respectively, the planetary gears revolve around the central axis of the first half shaft and rotate around the rotation axis of the planetary gears, and the rotation axis of the planetary gears is perpendicular to the central axis of the first half shaft.
5. The dual motor coaxial electric drive axle of claim 4, wherein the primary and secondary gears are fixedly coupled to the differential housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321147736.2U CN220562527U (en) | 2023-05-13 | 2023-05-13 | Double-motor coaxial electric drive axle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321147736.2U CN220562527U (en) | 2023-05-13 | 2023-05-13 | Double-motor coaxial electric drive axle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220562527U true CN220562527U (en) | 2024-03-08 |
Family
ID=90104077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321147736.2U Active CN220562527U (en) | 2023-05-13 | 2023-05-13 | Double-motor coaxial electric drive axle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220562527U (en) |
-
2023
- 2023-05-13 CN CN202321147736.2U patent/CN220562527U/en active Active
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