CN112211964A - Single-planet-row electric two-gear power driving system and vehicle - Google Patents
Single-planet-row electric two-gear power driving system and vehicle Download PDFInfo
- Publication number
- CN112211964A CN112211964A CN201910623565.8A CN201910623565A CN112211964A CN 112211964 A CN112211964 A CN 112211964A CN 201910623565 A CN201910623565 A CN 201910623565A CN 112211964 A CN112211964 A CN 112211964A
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- China
- Prior art keywords
- gear
- planet carrier
- drive system
- power drive
- electric
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/08—General details of gearing of gearings with members having orbital motion
- F16H57/082—Planet carriers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/003—Transmissions for multiple ratios characterised by the number of forward speeds
- F16H2200/0034—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising two forward speeds
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/20—Transmissions using gears with orbital motion
- F16H2200/203—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes
- F16H2200/2033—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes with one engaging means
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Structure Of Transmissions (AREA)
- Hybrid Electric Vehicles (AREA)
Abstract
A single-planet-row electric two-gear power driving system comprises a motor, a motor output shaft, a sun gear, a planet carrier, a gear ring, a clutch, a brake, a first gear, a second gear, an intermediate shaft, a third gear and a differential gear; wherein: the motor is fixedly connected with the gear ring through the motor output shaft; the brake is used for braking and unlocking the sun wheel; the clutch is used for connecting and disconnecting the ring gear and the planet carrier or connecting and disconnecting the ring gear and the sun gear; the first gear is fixedly connected with the planet carrier; the second gear and the third gear are fixed on the intermediate shaft; the second gear is meshed with the first gear; the third gear is meshed with the differential gear.
Description
Technical Field
The invention relates to the technical field of vehicle driving, in particular to a single-planet-row electric two-gear power driving system and a vehicle with the same.
Background
With the enhancement of environmental protection consciousness, the development and utilization of new energy resources are started in various industries, and the automobile industry is an important part in the environmental protection industry, so that the design and development of the new energy pure electric automobile are in line with the development of the era, and the change and the update of a transmission system are brought along with the development and the development of the new energy pure electric automobile.
The traditional pure electric gearbox generally adopts parallel offset type 2-stage involute helical gear transmission, so that in order to achieve larger wheel end torque output, the output torque of a motor needs to be improved or the transmission ratio needs to be increased. If the output torque of the motor is increased, the volume is increased, and the cost is increased; if the transmission ratio is increased, development difficulty is increased, and the overall arrangement is more demanding.
Certainly, at present, a plurality of vehicle enterprises develop two-gear or even multi-gear pure electric transmission cases, but the system is complex, the control difficulty is higher, and the cost is increased. So far, most of all electric vehicles of the vehicle enterprises are selected single-gear systems, such as Tesla, Leaf, BMW i3, popular E-up and the like.
Disclosure of Invention
In view of the above, the present invention provides a single planetary gear electric two-gear power driving system and a vehicle having the same.
The invention provides an electric two-gear power driving system of a single planet row, which comprises a motor, a motor output shaft, a sun gear, a planet carrier, a gear ring, a clutch, a brake, a first gear, a second gear, an intermediate shaft, a third gear and a differential gear, wherein the motor is connected with the motor output shaft; wherein:
the motor is fixedly connected with the gear ring through the motor output shaft;
the brake is used for braking and unlocking the sun wheel;
the clutch is used for connecting and disconnecting the ring gear and the planet carrier or connecting and disconnecting the ring gear and the sun gear;
the first gear is fixedly connected with the planet carrier;
the second gear and the third gear are fixed on the intermediate shaft;
the second gear is meshed with the first gear;
the third gear is meshed with the differential gear.
Further, the first gear is fixedly connected with the planet carrier through a connecting shaft.
Further, the connecting shaft passes through the sun gear, and the sun gear is sleeved on the connecting shaft in an empty mode.
Further, the first gear is a solid gear, and the connecting shaft is fixedly connected between the central position of the first gear and the central position of the planet carrier.
Further, the first gear is directly and fixedly connected with the planet carrier.
Further, the first gear is a hollow gear, and the first gear and the planet carrier are formed into a whole.
Further, the stopper is provided at a hollow position inside the first gear.
Further, the power driving system has two gears of an electric 1 gear and an electric 2 gear.
Further, when the power driving system is in an electric 1-gear, the brake brakes the sun gear, and the clutch is in a disconnected state; when the power driving system is in an electric 2 gear, the brake unlocks the sun gear, and the clutch is in an engaged state.
The invention also provides a vehicle which is provided with the power driving system.
The power driving system provided by the embodiment of the invention has the following advantages:
1. the system has simple integral structure, high integration level, compact structure and small volume;
2. the system adopts the planetary gear mechanism to reduce speed, and increases the transmission ratio on the premise of two-stage speed reduction, thereby reducing the torque requirement of the motor and increasing the output torque of the wheel end;
3. the system has two gears of an electric 1 gear and an electric 2 gear;
4. the system is simple and reliable, simple to control and low in cost;
5. the system can be applied to pure electric vehicles and hybrid vehicles, and has strong application flexibility.
The foregoing description is only an overview of the technical solutions of the present invention, and can be implemented according to the content of the description in order to make the technical means of the present invention more clearly understood, and in order to make other objects, features, and advantages of the single planetary row electric two-gear power driving system and the vehicle having the same more clearly understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic structural view of a power drive system in a first embodiment of the invention.
FIG. 2 is a power transmission schematic diagram of the power drive system of FIG. 1 operating in electric 1 gear.
FIG. 3 is a power transmission schematic diagram of the power drive system of FIG. 1 operating in electric 2.
Fig. 4 is a schematic structural view of a power drive system in a second embodiment of the invention.
Fig. 5 is a schematic structural view of a power drive system in a third embodiment of the invention.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, features and effects of the single planetary row electric two-gear power driving system and the vehicle having the same according to the present invention with reference to the accompanying drawings and preferred embodiments is as follows:
the foregoing and other technical matters, features and effects of the present invention will be apparent from the following detailed description of preferred embodiments, which is to be read in connection with the accompanying drawings. While the present invention has been described in connection with the preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but is intended to cover various modifications, equivalent arrangements, and specific embodiments thereof.
[ first embodiment ]
Referring to fig. 1, a first embodiment of the present invention provides a single-planetary-row electric two-gear power driving system, which includes a motor 1, a motor output shaft 2, a sun gear 3, a planet carrier 4, a ring gear 5, a clutch 6, a brake 7, a first gear 8, a second gear 9, an intermediate shaft 10, a third gear 11, and a differential gear 12.
The motor 1 is fixedly connected with the gear ring 5 through the motor output shaft 2, and specifically, the motor output shaft 2 is directly fixedly connected with the gear ring 5.
The brake 7 is used to brake and unlock the sun gear 3. When the brake 7 brakes the sun gear 3, the sun gear 3 cannot rotate because it is braked.
The clutch 6 is used to engage and disengage the ring gear 5 and the carrier 4. When the clutch 6 is engaged, the ring gear 5 and the planet carrier 4 are locked together, the entire row of planet wheels now rotating in its entirety, with a speed ratio of 1.
The first gear 8 is fixedly connected with the planet carrier 4, and the planet carrier 4 serves as an output.
Specifically, in the present embodiment, the first gear 8 is fixedly connected with the planet carrier 4 through the connecting shaft 14. The connecting shaft 14 passes through the sun gear 3, and the sun gear 3 is sleeved on the connecting shaft 14 in an empty way. The first gear 8 is a solid gear, and the connecting shaft 14 is fixedly connected between the central position of the first gear 8 and the central position of the planet carrier 4.
The second gear 9 and the third gear 11 are fixed to an intermediate shaft 10. The second gear 9 meshes with the first gear 8. The third gear 11 meshes with a differential gear 12.
Furthermore, the power driving system (comprising the motor 1, the speed change mechanism and the differential mechanism) can be integrated in the same box body, a plurality of box bodies are not needed, and the space occupied by the box bodies can be reduced.
Further, the power driving system further includes a power battery (not shown), and the power battery is electrically connected to the motor 1. The power battery supplies electric power for driving the motor 1.
The power drive system mainly comprises a motor 1, single planetary rows (3, 4 and 5), a clutch 6, a brake 7 and a shaft gear system, and can realize two gears of an electric 1 gear and an electric 2 gear.
Referring to fig. 2, when the power drive system is in electric 1, the brake 7 brakes the sun gear 3, and the clutch 6 is in a disconnected state. The power transmission route is as follows: the motor 1 transmits power to a motor output shaft 2, the power is transmitted to the planet carrier 4 through the gear ring 5, the planet carrier 4 transmits the power to the first gear 8, the second gear 9, the third gear 11, the differential gear 12 and finally the wheel end.
Referring to fig. 3, when the power driving system is in electric 2-gear, the brake 7 unlocks the sun gear 3, the clutch 6 is in an engaged state, and the whole planetary row is fixed into a whole and rotates integrally at a speed ratio of 1. The power transmission route is as follows: the motor 1 transmits power to a motor output shaft 2, the power is transmitted to the planet carrier 4 through the gear ring 5, the planet carrier 4 transmits the power to the first gear 8, the second gear 9, the third gear 11, the differential gear 12 and finally the wheel end.
The power driving system can be applied to a pure electric vehicle and can also be applied to a hybrid vehicle. Specifically, when applied to a hybrid vehicle, the power drive system provided by the embodiment of the invention may be used as an auxiliary drive system other than an engine, for example, when the vehicle is a four-wheel drive, the engine is used for driving front wheels, and the power drive system provided by the embodiment of the invention is used for driving rear wheels, or vice versa, that is, the engine is used for driving rear wheels, and the power drive system provided by the embodiment of the invention is used for driving front wheels.
In summary, the power driving system has the following advantages:
1. the system has simple integral structure, high integration level, compact structure and small volume;
2. the system adopts the planetary gear mechanism to reduce speed, and increases the transmission ratio on the premise of two-stage speed reduction, thereby reducing the torque requirement of the motor and increasing the output torque of the wheel end;
3. the system has two gears of an electric 1 gear and an electric 2 gear;
4. the system is simple and reliable, simple to control and low in cost;
5. the system can be applied to pure electric vehicles and hybrid vehicles, and has strong application flexibility.
[ second embodiment ]
Referring to fig. 4, a power driving system according to a second embodiment of the present invention is substantially the same as the first embodiment, except that in this embodiment, the first gear 8 is directly and fixedly connected to the planet carrier 4. Specifically, the first gear 8 is a hollow gear, and the first gear 8 is formed integrally with the carrier 4. In this way, the stopper 7 can be disposed at a hollow position in the first gear 8, making the structure more compact.
For other structures and driving principles of this embodiment, reference may be made to the first embodiment, which is not described herein again.
[ third embodiment ]
Referring to fig. 5, a third embodiment of the present invention provides a power drive system which is substantially the same as the second embodiment, except that in this embodiment, the clutch 6 is used to engage and disengage the ring gear 5 and the sun gear 3, and when the clutch 6 is engaged, the ring gear 5 and the sun gear 3 are locked together, and the entire planetary gear set rotates as a whole at a speed ratio of 1.
For other structures and driving principles of this embodiment, reference may be made to the first embodiment, which is not described herein again.
Further, the invention also provides a vehicle comprising the power driving system.
The single-planetary-row electric two-gear power driving system and the vehicle with the same provided by the invention are described in detail, a specific example is applied in the description to explain the principle and the implementation mode of the invention, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. A single-planet-row electric two-gear power driving system is characterized by comprising a motor (1), a motor output shaft (2), a sun gear (3), a planet carrier (4), a gear ring (5), a clutch (6), a brake (7), a first gear (8), a second gear (9), an intermediate shaft (10), a third gear (11) and a differential gear (12); wherein:
the motor (1) is fixedly connected with the gear ring (5) through the motor output shaft (2);
the brake (7) is used for braking and unlocking the sun wheel (3);
the clutch (6) is used for connecting and disconnecting the ring gear (5) and the planet carrier (4) or connecting and disconnecting the ring gear (5) and the sun gear (3);
the first gear (8) is fixedly connected with the planet carrier (4);
the second gear (9) and the third gear (11) are fixed on the intermediate shaft (10);
the second gear (9) is meshed with the first gear (8);
the third gear (11) meshes with the differential gear (12).
2. A power drive system according to claim 1, characterized in that the first gear wheel (8) is fixedly connected to the planet carrier (4) by means of a connecting shaft (14).
3. A power drive system according to claim 2, characterized in that the connecting shaft (14) passes through the sun wheel (3), the sun wheel (3) being fitted over the connecting shaft (14) in an empty manner.
4. A power drive system according to claim 2, characterized in that the first gear wheel (8) is a solid gear wheel, and the connecting shaft (14) is fixedly connected between the central position of the first gear wheel (8) and the central position of the planet carrier (4).
5. A power drive system according to claim 1, characterized in that the first gear wheel (8) is directly fixedly connected to the planet carrier (4).
6. A power drive system according to claim 5, characterized in that the first gear wheel (8) is a hollow gear wheel, the first gear wheel (8) being formed in one piece with the planet carrier (4).
7. A power drive system according to claim 6, characterized in that the brake (7) is arranged at a hollow position in the first gear wheel (8).
8. The power drive system of claim 1 having two gears, electric 1 and electric 2.
9. The power drive system as claimed in claim 8, wherein when the power drive system is in electric 1-gear, the brake (7) brakes the sun gear (3), and the clutch (6) is in an off state; when the power driving system is in an electric 2 gear, the brake (7) unlocks the sun gear (3), and the clutch (6) is in an engaged state.
10. A vehicle equipped with the power drive system according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910623565.8A CN112211964A (en) | 2019-07-11 | 2019-07-11 | Single-planet-row electric two-gear power driving system and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910623565.8A CN112211964A (en) | 2019-07-11 | 2019-07-11 | Single-planet-row electric two-gear power driving system and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112211964A true CN112211964A (en) | 2021-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910623565.8A Pending CN112211964A (en) | 2019-07-11 | 2019-07-11 | Single-planet-row electric two-gear power driving system and vehicle |
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| CN (1) | CN112211964A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113294502A (en) * | 2021-05-06 | 2021-08-24 | 东风鼎新动力***科技有限公司 | Dynamic gear shifting speed reducer and automobile |
-
2019
- 2019-07-11 CN CN201910623565.8A patent/CN112211964A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113294502A (en) * | 2021-05-06 | 2021-08-24 | 东风鼎新动力***科技有限公司 | Dynamic gear shifting speed reducer and automobile |
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