CN211364239U - Dual-motor driving system and vehicle - Google Patents
Dual-motor driving system and vehicle Download PDFInfo
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- CN211364239U CN211364239U CN201921839277.8U CN201921839277U CN211364239U CN 211364239 U CN211364239 U CN 211364239U CN 201921839277 U CN201921839277 U CN 201921839277U CN 211364239 U CN211364239 U CN 211364239U
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Abstract
The utility model relates to a vehicle drive technical field discloses a two motor drive system and vehicle, provide the power of drive vehicle through first motor and second motor, and set up planetary gear mechanism, planetary gear mechanism includes the sun gear, the planet wheel, ring gear and planet carrier, the planet wheel meshes with sun gear and ring gear respectively, the planet wheel is connected on the planet carrier, output shaft through first motor is connected with the sun gear, with power transmission to planetary gear mechanism with first motor, output shaft through the second motor is connected with the ring gear, with power transmission to planetary gear mechanism with the second motor, and the planet carrier is used for exporting the power of transmission via planetary gear mechanism, transmit the power of first motor and second motor through planetary gear mechanism promptly, make the power that first motor and second motor provided finally be used for driving vehicle, avoided current electric drive system to adopt a motor to lead to being difficult to satisfying the problem of high-power drive demand.
Description
Technical Field
The utility model relates to a vehicle drive technical field especially relates to a bi-motor drive system and vehicle.
Background
The electric drive system is a main execution structure for driving the electric vehicle, the electric vehicle provides power for driving wheels through the electric drive system, and the driving characteristics of the electric vehicle determine main performance indexes for driving the electric vehicle. At present, the electric drive system in the prior art usually only comprises one motor, and the requirement of a vehicle for high-power drive is difficult to meet.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a two motor drive system and vehicle is provided, it can avoid current electric drive system to adopt a motor to lead to being difficult to satisfy the problem of high-power drive demand.
In order to solve the technical problem, an embodiment of the present invention provides a dual-motor driving system, including a first motor, a second motor, and a planetary gear mechanism for transmitting power of the first motor and the second motor; the planetary gear mechanism comprises a sun gear, a planet gear, a gear ring and a planet carrier, an output shaft of the first motor is connected with the sun gear, an output shaft of the second motor is connected with the gear ring, the planet gear is respectively engaged with the sun gear and the gear ring, the planet gear is connected on the planet carrier, and the planet carrier is used for outputting power transmitted by the planetary gear mechanism.
Preferably, the dual-motor driving system further comprises a first brake, and the first brake is arranged on the gear ring; wherein the carrier is configured to output the power supplied by the first motor and transmitted via the planetary gear mechanism when the first brake locks the ring gear.
Preferably, the dual-motor driving system further comprises a second brake, and the second brake is arranged on the output shaft of the first motor; wherein the carrier is configured to output the power provided by the second motor and transmitted via the planetary gear mechanism when the second brake locks the output shaft of the first motor.
Preferably, the number of the planet wheels is multiple, and the distance from each planet wheel to the rotation axis of the sun wheel is equal.
Preferably, the first motor is located on one side of the planetary gear mechanism, and the second motor is located on the other side of the planetary gear mechanism.
Preferably, a rotation axis of the output shaft of the first motor coincides with a rotation axis of the output shaft of the second motor.
Preferably, the first motor and the second motor are horizontally arranged oppositely.
Preferably, the dual-motor driving system further comprises a transmission gear, a main speed reducer, a differential and a power output shaft for connecting wheels, wherein the transmission gear is connected with the planet carrier, the planet carrier is connected with the main speed reducer through the transmission gear, the main speed reducer is connected with the differential, and the differential is connected with the power output shaft.
In order to solve the same technical problem, the embodiment of the utility model provides a still provide a vehicle, include two motor drive systems.
The embodiment of the utility model provides a two motor drive system and vehicle, provide the power of drive vehicle through first motor and second motor, and set up the planetary gear mechanism, the planetary gear mechanism includes sun gear, the planet wheel, ring gear and planet carrier, the planet wheel meshes with sun gear and ring gear respectively, the planet wheel is connected on the planet carrier, be connected with the sun gear through the output shaft of first motor, in order to transmit the power of first motor to the planetary gear mechanism, be connected with the ring gear through the output shaft of second motor, in order to transmit the power of second motor to the planetary gear mechanism, and the planet carrier is used for exporting the power of transmitting via the planetary gear mechanism, namely transmit the power of first motor and second motor through the planetary gear mechanism, make the power that first motor and second motor provided finally be used for driving the vehicle, avoided current electric drive system to adopt a motor to lead to being difficult to satisfying the problem of high-power drive demand, thereby meeting the requirement of the vehicle for high-power driving.
Drawings
Fig. 1 is a schematic structural diagram of a dual-motor driving system in an embodiment of the present invention;
fig. 2 is a working schematic diagram of the dual-motor driving system in the embodiment of the present invention in the conventional first gear power mode;
fig. 3 is a working schematic diagram of the dual-motor driving system in the embodiment of the present invention in the conventional second gear power mode;
wherein, 1, a first motor; 2. an output shaft of the first motor; 3. a second brake; 4. a sun gear; 5. a planet wheel; 6. a planet carrier; 7. a first brake; 8. an output shaft of the second motor; 9. a ring gear; 10. a transmission gear; 11. a main reducer; 12. a differential mechanism; 13. a second motor.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1, a dual motor driving system according to a preferred embodiment of the present invention includes a first motor 1, a second motor 13, and a planetary gear mechanism for transmitting power of the first motor 1 and the second motor 13; the planetary gear mechanism comprises a sun gear 4, a planet gear 5, a gear ring 9 and a planet carrier 6, the output shaft 2 of the first motor 1 is connected with the sun gear 4, the output shaft 8 of the second motor 13 is connected with the gear ring 9, the planet gear 5 is respectively engaged with the sun gear 4 and the gear ring 9, the planet gear 5 is connected on the planet carrier 6, and the planet carrier 6 is used for outputting power transmitted by the planetary gear mechanism.
In the embodiment of the present invention, power for driving the vehicle is provided by the first motor 1 and the second motor 13, and a planetary gear mechanism is provided, the planetary gear mechanism includes a sun gear 4, a planetary gear 5, a ring gear 9 and a planetary carrier 6, the planetary gear 5 is respectively engaged with the sun gear 4 and the ring gear 9, the planetary gear 5 is connected to the planetary carrier 6, is connected to the sun gear 4 by the output shaft 2 of the first motor 1 to transmit the power of the first motor 1 to the planetary gear mechanism, is connected to the ring gear 9 by the output shaft 8 of the second motor 13 to transmit the power of the second motor 13 to the planetary gear mechanism, and the planetary carrier 6 is used for outputting the power transmitted via the planetary gear mechanism, that is, the power of the first motor 1 and the power of the second motor 13 is transmitted by the planetary gear mechanism, so that the power provided by the first motor 1 and the second motor 13 is finally used for driving the vehicle, the problem that the requirement of high-power driving is difficult to meet due to the fact that an existing driving system adopts a motor is solved, and therefore the requirement of a vehicle for high-power driving is met.
In a specific implementation, as shown in fig. 1 to fig. 3, in order to drive a vehicle, the dual-motor drive system in this embodiment further includes a transmission gear 10, a final drive 11, a differential 12, and a power output shaft for connecting wheels, where the transmission gear 10 is connected to the carrier 6, the carrier 6 is connected to the final drive 11 through the transmission gear 10, the final drive 11 is connected to the differential 12, and the differential 12 is connected to the power output shaft. The power output by the planet carrier 6 is transmitted to the main reducer 11 through the transmission gear 10, and the power output shaft is driven to rotate through the differential 12 after passing through the main reducer 11, so that wheels are driven to rotate, meanwhile, the double-motor driving system forms secondary speed reduction, and the total speed ratio of the double-motor driving system can be adjusted by adjusting the transmission ratio between the transmission gear 10 and the main reducer 11.
In an alternative embodiment, the dual motor drive system further comprises a first brake 7, the first brake 7 being provided on the ring gear 9; wherein the carrier 6 is configured to output the power supplied from the first electric motor 1 and transmitted via the planetary gear mechanism when the first brake 7 locks the ring gear 9 (at this time, the ring gear 9 is fixedly connected to the vehicle housing via the first brake 7);
the dual-motor driving system further comprises a second brake 3, and the second brake 3 is arranged on the output shaft 2 of the first motor 1; wherein, when the second brake 3 locks the output shaft 2 of the first motor 1 (at this time, the output shaft 2 of the first motor 1 is fixedly connected with the vehicle housing through the second brake 3), the carrier 6 is used for outputting the power provided by the second motor 13 and transmitted through the planetary gear mechanism. In addition, the first brake 7 and the second brake 3 may be locked or released through hydraulic control, and of course, may also be controlled through other manners, which will not be described herein.
The working principle of the dual-motor driving system provided by the embodiment is described in detail as follows:
(1) normal first gear power mode
Referring to fig. 2, when the first brake 7 locks the ring gear 9 and the second brake 3 releases the output shaft 2 of the first motor 1, the dual-motor drive system is in a normal first-gear power mode, power output by the dual-motor drive system is provided by the first motor 1, specifically, power generated by the first motor 1 sequentially passes through the sun gear 4, the planet gear 5, the planet carrier 6 and the transmission gear 10, and is output to the power output shaft through the main reducer 11 and the differential 12, and finally wheels are driven through the power output shaft.
(2) Normal second gear power mode
Referring to fig. 3, when the first brake 7 releases the ring gear 9 and the second brake 3 locks the output shaft 2 of the first motor 1, the dual-motor drive system is in a normal second-gear power mode, power output by the dual-motor drive system is provided by the second motor 13, specifically, power generated by the second motor 13 sequentially passes through the ring gear 9, the planet gear 5, the planet carrier 6 and the transmission gear 10, and is output to the power output shaft through the main reducer 11 and the differential 12, and finally wheels are driven through the power output shaft.
(3) Dual motor mode of operation
Referring to fig. 1, when the first brake 7 releases the ring gear 9 and the second brake 3 releases the output shaft 2 of the first motor 1, the dual-motor drive system is in a dual-motor operating mode, power output by the dual-motor drive system is provided by the first motor 1 and the second motor 13 together, specifically, power generated by the first motor 1 is transmitted to the planetary gear mechanism through the sun gear 4, power generated by the second motor 13 is transmitted to the planetary gear mechanism through the ring gear 9, the two are superposed and transmitted through the planet gear 5, the planet carrier 6 and the transmission gear 10, and then output to the power output shaft through the main reducer 11 and the differential 12, and finally, wheels are driven through the power output shaft.
In this embodiment, the dual-motor drive system has 2 gears, so as to meet different driving requirements. In addition, under the conventional second-gear power mode, the dual-motor driving system has a smaller speed ratio, so that the requirement of the vehicle on the highest speed can be met; and under the double-motor working mode, the double-motor driving system can output the maximum torque, and the requirement of a vehicle on high-power driving is met.
It should be noted that the sun gear 4 and the planet gears 5 in this embodiment are gears, and preferably, the number of the planet gears 5 is multiple, and the distance from each planet gear 5 to the rotation axis of the sun gear 4 is equal. In this embodiment, a plurality of planetary gears 5 are distributed around the sun gear 4, and the distance from each planetary gear 5 to the rotation axis of the sun gear 4 is equal, so that a plurality of planetary gears 5 can revolve around the sun gear 4, and a plurality of planetary gears 5 simultaneously drive the planet carrier 6 to rotate, thereby facilitating the planet carrier 6 to output power.
As shown in fig. 1 to 3, in order to facilitate installation of the first motor 1 and the second motor 13, the first motor 1 in this embodiment is located on one side of the planetary gear mechanism, and the second motor 13 is located on the other side of the planetary gear mechanism. In addition, in order to simplify the structure, it is preferable that the rotation axis of the output shaft 2 of the first motor 1 coincides with the rotation axis of the output shaft 8 of the second motor 13, and the first motor 1 and the second motor 13 are horizontally disposed to face each other.
Correspondingly, the embodiment of the utility model provides a still provide a vehicle, include two motor drive systems.
In summary, the embodiment of the present invention provides a dual-motor driving system and a vehicle, wherein power for driving the vehicle is provided through a first motor 1 and a second motor 13, and a planetary gear mechanism is provided, the planetary gear mechanism includes a sun gear 4, a planetary gear 5, a ring gear 9 and a planet carrier 6, the planetary gear 5 is respectively engaged with the sun gear 4 and the ring gear 9, the planetary gear 5 is connected to the planet carrier 6, and is connected to the sun gear 4 through an output shaft 2 of the first motor 1 to transmit power of the first motor 1 to the planetary gear mechanism, and is connected to the ring gear 9 through an output shaft 8 of the second motor 13 to transmit power of the second motor 13 to the planetary gear mechanism, and the planet carrier 6 is used for outputting power transmitted through the planetary gear mechanism, that is, power of the first motor 1 and power of the second motor 13 is transmitted through the planetary gear mechanism, so that the power provided by the first motor 1 and the second motor 13 is finally used for driving the vehicle, the problem that the requirement of high-power driving is difficult to meet due to the fact that an existing electric driving system adopts a motor is solved, and therefore the requirement of a vehicle for high-power driving is met.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.
Claims (9)
1. A dual-motor drive system is characterized by comprising a first motor, a second motor and a planetary gear mechanism for transmitting the power of the first motor and the second motor; the planetary gear mechanism comprises a sun gear, a planet gear, a gear ring and a planet carrier, an output shaft of the first motor is connected with the sun gear, an output shaft of the second motor is connected with the gear ring, the planet gear is respectively engaged with the sun gear and the gear ring, the planet gear is connected on the planet carrier, and the planet carrier is used for outputting power transmitted by the planetary gear mechanism.
2. The dual motor drive system of claim 1, further comprising a first brake disposed on the gear ring; wherein the carrier is configured to output the power supplied by the first motor and transmitted via the planetary gear mechanism when the first brake locks the ring gear.
3. The dual-motor drive system as claimed in claim 1 or 2, further comprising a second brake provided on an output shaft of the first motor; wherein the carrier is configured to output the power provided by the second motor and transmitted via the planetary gear mechanism when the second brake locks the output shaft of the first motor.
4. The dual motor drive system as claimed in claim 1 or 2, wherein the number of the planetary wheels is plural, and each of the planetary wheels is equidistant from the rotational axis of the sun wheel.
5. The dual motor drive system as claimed in claim 1 or 2, wherein the first motor is located on one side of the planetary gear mechanism and the second motor is located on the other side of the planetary gear mechanism.
6. The dual motor drive system as claimed in claim 1 or 2, wherein the axis of rotation of the output shaft of the first motor coincides with the axis of rotation of the output shaft of the second motor.
7. The dual motor drive system of claim 6, wherein the first motor and the second motor are horizontally opposed.
8. The dual-motor drive system as claimed in claim 1 or 2, further comprising a transmission gear, a final drive, a differential and a power take-off shaft for connecting a wheel, wherein the transmission gear is connected with the carrier, the carrier is connected with the final drive through the transmission gear, the final drive is connected with the differential, and the differential is connected with the power take-off shaft.
9. A vehicle characterized by comprising the two-motor drive system according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921839277.8U CN211364239U (en) | 2019-10-29 | 2019-10-29 | Dual-motor driving system and vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921839277.8U CN211364239U (en) | 2019-10-29 | 2019-10-29 | Dual-motor driving system and vehicle |
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| CN211364239U true CN211364239U (en) | 2020-08-28 |
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| CN201921839277.8U Active CN211364239U (en) | 2019-10-29 | 2019-10-29 | Dual-motor driving system and vehicle |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112265438A (en) * | 2020-10-21 | 2021-01-26 | 恒大新能源汽车投资控股集团有限公司 | Electric drive system, vehicle drive control method and device and vehicle |
| CN112744038A (en) * | 2021-01-28 | 2021-05-04 | 江西科技学院 | Flying automobile driving system and flying automobile |
| CN113263905A (en) * | 2021-06-29 | 2021-08-17 | 奇瑞汽车股份有限公司 | Power drive system and control method |
| CN113619382A (en) * | 2021-09-14 | 2021-11-09 | 燕山大学 | Multi-mode power coupling driving system of double-motor pure electric vehicle |
| CN113665353A (en) * | 2021-09-14 | 2021-11-19 | 燕山大学 | Dual-motor coupling driving system |
| CN113696721A (en) * | 2021-09-14 | 2021-11-26 | 燕山大学 | Dual-motor coupling driving system based on double-row single sun wheel type planetary mechanism |
-
2019
- 2019-10-29 CN CN201921839277.8U patent/CN211364239U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112265438A (en) * | 2020-10-21 | 2021-01-26 | 恒大新能源汽车投资控股集团有限公司 | Electric drive system, vehicle drive control method and device and vehicle |
| CN112744038A (en) * | 2021-01-28 | 2021-05-04 | 江西科技学院 | Flying automobile driving system and flying automobile |
| CN113263905A (en) * | 2021-06-29 | 2021-08-17 | 奇瑞汽车股份有限公司 | Power drive system and control method |
| CN113619382A (en) * | 2021-09-14 | 2021-11-09 | 燕山大学 | Multi-mode power coupling driving system of double-motor pure electric vehicle |
| CN113665353A (en) * | 2021-09-14 | 2021-11-19 | 燕山大学 | Dual-motor coupling driving system |
| CN113696721A (en) * | 2021-09-14 | 2021-11-26 | 燕山大学 | Dual-motor coupling driving system based on double-row single sun wheel type planetary mechanism |
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Effective date of registration: 20240222 Granted publication date: 20200828 |
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