阅读说明：本技术 两挡位混合动力专用变速器 (Two-gear hybrid power special transmission ) 是由 李宇栋 郑勇 郑未伟 杨加丰 于 2021-09-09 设计创作，主要内容包括：本发明公开了一种两挡位混合动力专用变速器,包括发电机、驱动电机、输入轴、输出轴、与发电机和输入轴连接的发电机减速组件、与驱动电机和输出轴连接的第一齿轮传动机构、与输出轴连接的第二齿轮传动机构和第三齿轮传动机构、用于控制所述第三齿轮传动机构与所述输入轴之间的结合与分离的第一离合器和用于控制所述第二齿轮传动机构与所述输入轴之间的结合与分离的第二离合器。本发明通过发动机、发电机、驱动电机、第一离合器及第二离合器的组合,可以实现发动机直驱两挡位,提高发动机的效率,且换挡过程无动力中断,提升驾驶平顺性。(The invention discloses a two-gear hybrid power special transmission which comprises a generator, a driving motor, an input shaft, an output shaft, a generator speed reduction assembly connected with the generator and the input shaft, a first gear transmission mechanism connected with the driving motor and the output shaft, a second gear transmission mechanism and a third gear transmission mechanism connected with the output shaft, a first clutch used for controlling the combination and the separation between the third gear transmission mechanism and the input shaft, and a second clutch used for controlling the combination and the separation between the second gear transmission mechanism and the input shaft. According to the invention, through the combination of the engine, the generator, the driving motor, the first clutch and the second clutch, the engine can directly drive two gears, the efficiency of the engine is improved, no power interruption is generated in the gear shifting process, and the driving smoothness is improved.)

1. Two special derailleurs of fender position hybrid, including generator, driving motor, input shaft, output shaft, with generator and the generator speed reduction subassembly of input shaft, with the first gear drive mechanism of driving motor and output shaft and with second gear drive mechanism and the third gear drive mechanism of output shaft, its characterized in that: the clutch device further comprises a first clutch used for controlling connection and disconnection between the third gear transmission mechanism and the input shaft and a second clutch used for controlling connection and disconnection between the second gear transmission mechanism and the input shaft.

2. The two-speed hybrid transmission of claim 1, wherein: the generator speed reduction assembly comprises a first driving shaft connected with the generator, an idler shaft, a generator driving gear arranged on the first driving shaft, an idler wheel arranged on the idler shaft and meshed with the generator driving gear, and a generator driven gear arranged on the input shaft and meshed with the idler wheel, wherein the number of teeth of the generator driven gear is more than that of the generator driving gear.

3. The two-speed hybrid transmission of claim 2, wherein: the idler shaft and the first drive shaft are arranged in parallel on the same side of the input shaft.

4. The two-speed hybrid transmission according to any one of claims 1 to 3, characterized in that: the first gear transmission mechanism comprises a second driving shaft connected with the driving motor, a first driving gear arranged on the second driving shaft and a first driven gear arranged on the output shaft and meshed with the first driving gear.

5. The gear hybrid transmission of claim 4, wherein: the second driving shaft and the input shaft are coaxially arranged, the second driving shaft is at least partially sleeved on the input shaft in an empty mode, and the output shaft is parallel to the input shaft.

6. The two-speed hybrid transmission according to any one of claims 1 to 3, characterized in that: the second gear transmission mechanism comprises a second driving gear arranged on the input shaft and a second driven gear arranged on the output shaft and meshed with the second driving gear.

7. The two-speed hybrid transmission according to any one of claims 1 to 3, characterized in that: the third gear transmission mechanism comprises a third driving gear arranged on the input shaft and a third driven gear arranged on the output shaft and meshed with the third driving gear.

8. The two-speed hybrid transmission according to any one of claims 1 to 7, characterized in that: the generator driven gear, the third driving gear, the first clutch, the second clutch and the second driving gear are sequentially arranged along the axial direction of the input shaft.

9. The two-speed hybrid transmission of claim 8, wherein: the first gear transmission mechanism is located between the drive motor and the second gear transmission mechanism.

10. The two-speed hybrid transmission according to any one of claims 1 to 3, characterized in that: the transmission ratio of the first gear transmission mechanism is larger than that of the second gear transmission mechanism, and the transmission ratio of the second gear transmission mechanism is larger than that of the third gear transmission mechanism.

Technical Field

The invention belongs to the technical field of transmissions, and particularly relates to a two-gear hybrid power special transmission.

Background

With the increasing awareness of environmental protection, new energy vehicles have been rapidly developed in recent years. Compared with the traditional fuel vehicle, the new energy has the advantages of low energy consumption, light pollution and the like, and can solve the problems of energy shortage, environmental pollution and the like. Due to the factors of long charging time, inconvenience in charging, short endurance mileage and the like, the pure electric new energy automobile becomes an important development direction of the technology.

The existing special hybrid power transmission has only one gear, and the engine has no speed ratio interval which can be selected, so that the advantages of the existing special hybrid power transmission cannot be exerted, and the economical efficiency and the dynamic property are poor; and the special hybrid transmission uses the synchronizer to shift gears, so that the problem of power interruption exists in the gear shifting process, and the driving comfort is influenced.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a two-gear hybrid power special transmission, and aims to improve the economy, the dynamic property and the gear shifting comfort of an automobile.

In order to achieve the purpose, the invention adopts the technical scheme that: the special two-gear hybrid power transmission comprises a generator, a driving motor, an input shaft, an output shaft, a generator speed reduction assembly connected with the generator and the input shaft, a first gear transmission mechanism connected with the driving motor and the output shaft, a second gear transmission mechanism and a third gear transmission mechanism connected with the output shaft, a first clutch used for controlling the combination and the separation between the third gear transmission mechanism and the input shaft, and a second clutch used for controlling the combination and the separation between the second gear transmission mechanism and the input shaft.

The generator speed reduction assembly comprises a first driving shaft connected with the generator, an idler shaft, a generator driving gear arranged on the first driving shaft, an idler wheel arranged on the idler shaft and meshed with the generator driving gear, and a generator driven gear arranged on the input shaft and meshed with the idler wheel, wherein the number of teeth of the generator driven gear is more than that of the generator driving gear.

The idler shaft and the first drive shaft are arranged in parallel on the same side of the input shaft.

The first gear transmission mechanism comprises a second driving shaft connected with the driving motor, a first driving gear arranged on the second driving shaft and a first driven gear arranged on the output shaft and meshed with the first driving gear.

The second driving shaft and the input shaft are coaxially arranged, the second driving shaft is at least partially sleeved on the input shaft in an empty mode, and the output shaft is parallel to the input shaft.

The second gear transmission mechanism comprises a second driving gear arranged on the input shaft and a second driven gear arranged on the output shaft and meshed with the second driving gear.

The third gear transmission mechanism comprises a third driving gear arranged on the input shaft and a third driven gear arranged on the output shaft and meshed with the third driving gear.

The generator driven gear, the third driving gear, the first clutch, the second clutch and the second driving gear are sequentially arranged along the axial direction of the input shaft.

The first gear transmission mechanism is located between the drive motor and the second gear transmission mechanism.

The transmission ratio of the first gear transmission mechanism is larger than that of the second gear transmission mechanism, and the transmission ratio of the second gear transmission mechanism is larger than that of the third gear transmission mechanism.

The special two-gear hybrid power transmission can realize multiple working modes through the combination of the engine, the generator, the driving motor, the first clutch and the second clutch. According to the special two-gear hybrid power transmission, the two gears of the engine can be directly driven by the combination or separation of the first clutch and the second clutch, and the efficiency of the engine is improved. And the clutch is adopted for gear shifting, the gear shifting process is free of power interruption, and the driving smoothness of the whole vehicle is improved.

Drawings

The description includes the following figures, the contents shown are respectively:

FIG. 1 is a schematic structural diagram of a two-speed hybrid transmission of the present invention;

labeled as: 1. an engine; 2. an input shaft; 3. a generator driven gear; 4. an idler shaft; 5. an idler pulley; 6. a generator drive gear; 7. a first drive shaft; 8. a generator; 9. a drive motor; 10. a second drive shaft; 11. a first drive gear; 12. a first driven gear; 13. a second driving gear; 14. a second driven gear; 15. a third driving gear; 16. a third driven gear; 17. an output shaft; 18. a first clutch; 19. a second clutch; 20. an output drive gear; 21. a differential driven gear; 22. a differential assembly.

Detailed Description

The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings for a purpose of helping those skilled in the art to more fully, accurately and deeply understand the concept and technical solution of the present invention and to facilitate its implementation.

It should be noted that, in the following embodiments, the terms "first", "second" and "third" do not denote absolute differences in structure and/or function, nor do they denote a sequential order of execution, but rather are used for convenience of description.

As shown in fig. 1, the present invention provides a two-gear hybrid transmission, which includes a generator 8, a driving motor 9, an input shaft 2, an output shaft 17, a differential assembly 22, a generator speed reduction assembly connected to the generator 8 and the input shaft 2, a first gear mechanism connected to the driving motor 9 and the output shaft 17, a second gear mechanism and a third gear mechanism connected to the output shaft 17, a first clutch 18 for controlling the connection and disconnection between the third gear mechanism and the input shaft 2, and a second clutch 19 for controlling the connection and disconnection between the second gear mechanism and the input shaft 2.

Specifically, as shown in fig. 1, the generator speed reduction assembly includes a first drive shaft 7 connected to the generator 8, an idler shaft 4, a generator drive gear 6 provided on the first drive shaft 7, an idler gear 5 provided on the idler shaft 4 and meshed with the generator drive gear 6, and a generator driven gear 3 provided on the input shaft 2 and meshed with the idler gear 5, the number of teeth of the generator driven gear 3 is greater than that of the generator drive gear 6, and the idler shaft 4 and the first drive shaft 7 are arranged in parallel on the same side of the input shaft 2. The first driving shaft 7 is fixedly connected with a rotor of a generator 8, a generator driving gear 6 is fixedly arranged on the first driving shaft 7, a generator driven gear 3 is fixedly arranged on the input shaft 2, and the input shaft 2 is fixedly connected with a power output end of the engine 1.

As shown in fig. 1, the first gear transmission mechanism includes a second driving shaft 10 connected to the driving motor 9, a first driving gear 11 provided on the second driving shaft 10, and a first driven gear 12 provided on the output shaft 17 and engaged with the first driving gear 11. The second driving shaft 10 is arranged coaxially with the input shaft 2, the second driving shaft 10 is at least partially sleeved on the input shaft 2 in a hollow way, and the output shaft 17 is parallel to the input shaft 2. The second driving shaft 10 is fixedly connected with the rotor of the driving motor 9, the first driving gear 11 is fixedly arranged on the second driving shaft 10, and the first driven gear 12 is fixedly arranged on the output shaft 17.

As shown in fig. 1, the second gear transmission mechanism includes a second driving gear 13 provided on the input shaft 2 and a second driven gear 14 provided on the output shaft 17 and engaged with the second driving gear 13. The third gear transmission mechanism includes a third driving gear 15 provided on the input shaft 2 and a third driven gear 16 provided on the output shaft 17 and meshed with the third driving gear 15. The second driving gear 13 and the third driving gear 15 are freely sleeved on the input shaft 2, and the second driven gear 14 and the third driven gear 16 are fixedly arranged on the output shaft 17. The generator driven gear 3, the third driving gear 15, the first clutch 18, the second clutch 19 and the second driving gear 13 are sequentially arranged along the axial direction of the input shaft 2, and the generator driven gear 3 is arranged on one side close to the engine 1. The third driven gear 16, the output driving gear 20, the second driven gear 14, and the first driven gear 12 are sequentially arranged along the axial direction of the output shaft 17, and the first driving gear 11 is disposed between the second driving gear 13 and the driving motor 9.

As shown in fig. 1, the gear ratio of the first gear transmission mechanism is greater than the gear ratio of the second gear transmission mechanism, which is greater than the gear ratio of the third gear transmission mechanism. The number of teeth of first driven gear 12 is more than the number of teeth of first driving gear 11, and the number of teeth of second driven gear 14 is more than the number of teeth of second driving gear 13, and the number of teeth of third driving gear 15 is more than the number of teeth of third driven gear 16, and the diameter of third driving gear 15, second driving gear 13, first driving gear 11 reduces in proper order, and the diameter of third driven gear 16, second driven gear 14, first driven gear 12 increases in proper order.

As shown in fig. 1, an output driving gear 20 is further disposed on the output shaft 17, the output driving gear 20 is meshed with a differential driven gear 21, and the number of teeth of the differential driven gear 21 is greater than that of the output driving gear 20. The differential driven gear 21 is fixedly arranged on a differential assembly 22, and the differential assembly 22 is connected with a transmission shaft so as to drive the vehicle to run.

Next, different operation modes of the two-speed hybrid transmission configured as described above will be described.

As shown in fig. 1, when the two-gear hybrid dedicated transmission operates in the electric-only mode, the first clutch 18 is in a disengaged state, the second clutch 19 is in a disengaged state, the second driving gear 13 and the third driving gear 15 cannot rotate synchronously with the input shaft 2, and the engine 1 is decoupled from the wheels. The driving motor 9 works, and power generated by the driving motor 9 is transmitted to wheels through the second driving shaft 10, the first driving gear 11, the first driven gear 12, the output shaft 17, the output driving gear 20 and the differential assembly 22 in sequence to drive the vehicle to run.

As shown in fig. 1, when the two-gear hybrid dedicated transmission operates in the series range-extending mode, the first clutch 18 is in a disengaged state, the second clutch 19 is in a disengaged state, the second driving gear 13 and the third driving gear 15 cannot synchronously rotate with the input shaft 2, and the engine 1 is decoupled from the wheels. The engine 1 drives the generator 8 to generate power only through the generator driven gear 3, the idle gear 5, the generator driving gear 6 and the first driving shaft 7, the driving motor 9 drives, and power generated by the driving motor 9 is transmitted to wheels through the second driving shaft 10, the first driving gear 11, the first driven gear 12, the output shaft 17, the output driving gear 20 and the differential assembly 22 in sequence to drive the vehicle to run.

As shown in fig. 1, when the two-gear hybrid transmission is operated in the engine drive mode and is in a low gear, the first clutch 18 is in a disengaged state, the second clutch 19 is in an engaged state, the third driving gear 15 and the input shaft 2 cannot rotate synchronously, the second driving gear 13 and the input shaft 2 rotate synchronously, and power generated by the engine 1 is transmitted to wheels through the input shaft 2, the second clutch 19, the second driving gear 13, the second driven gear 14, the output shaft 17, the output driving gear 20 and the differential assembly 22 in sequence to drive the vehicle to run.

As shown in fig. 1, when the two-gear hybrid transmission is operated in the engine driving mode and is in the high gear, the first clutch 18 is controlled to be switched to the engaged state, the second clutch 19 is controlled to be switched to the disengaged state, the third driving gear 15 and the input shaft 2 rotate synchronously, the second driving gear 13 and the input shaft 2 cannot rotate synchronously, and the power generated by the engine 1 is transmitted to the wheels through the input shaft 2, the first clutch 18, the third driving gear 15, the third driven gear 16, the output shaft 17, the output driving gear 20 and the differential assembly 22 in sequence to drive the vehicle to run.

In the switching process of the low-speed gear and the high-speed gear, unpowered interrupted gear shifting can be realized through the sliding friction of the clutch. According to the SOC state of the power battery and the power demand of the vehicle, the generator 8 can be driven, generate power or idle in the engine driving mode, the driving motor 9 can be driven or idle,

as shown in fig. 1, when the two-gear hybrid transmission operates in the braking energy recovery mode, the first clutch 18 is in a disengaged state, the second clutch 19 is in a disengaged state, the second driving gear 13 and the third driving gear 15 cannot rotate synchronously with the input shaft 2, the braking energy of the vehicle is transmitted to the driving motor 9 through the differential assembly 22, the driving gear of the output shaft 17, the first driven gear 12, the first driving gear 11, and the second driving shaft 10, and the driving motor 9 generates power to charge the battery.

As shown in fig. 1, when the two-gear hybrid transmission is operated in the parking power generation mode, the first clutch 18 is disengaged, the second clutch 19 is disengaged, the second driving gear 13 and the third driving gear 15 cannot rotate synchronously with the input shaft 2, the driving motor 9 is not operated, the engine 1 is operated, power is transmitted to the generator 8 through the input shaft 2, the generator driven gear 3, the idler gear 5, the generator driving gear 6 and the first driving shaft 7, the generator 8 generates power, and the battery is charged.

The invention is described above with reference to the accompanying drawings. It is to be understood that the specific implementations of the invention are not limited in this respect. Various insubstantial improvements are made by adopting the method conception and the technical scheme of the invention; the present invention is not limited to the above embodiments, and can be modified in various ways.