Hybrid system and vehicle

Patent metadata

Field	Value
Publication number	US-12012005-B1
Application number	US-202118278848-A
Country	US
Kind code	B1
Filing date	Mar 1, 2021
Priority date	Mar 1, 2021
Publication date	Jun 18, 2024
Grant date	Jun 18, 2024

Abstract

A hybrid system and a vehicle, the hybrid system comprising an engine, an electric motor, a dual clutch, and a transmission provided with two synchromesh mechanisms and two input shafts. The engine being selectively in transmission connection to one of the input shafts via one clutch unit of the dual clutch and being selectively in transmission connection to the other of the input shafts via the other clutch unit of the dual clutch.

First claim

The invention claimed is:

1. A hybrid system, comprising:
a transmission including a first input shaft, a second input shaft, an output shaft, and an intermediate shaft, wherein the second input shaft sleeves the first input shaft, and the second input shaft and the first input shaft are capable of rotating independently of each other, wherein the first input shaft is provided with a first synchromesh mechanism, and the output shaft is provided with a second synchromesh mechanism, wherein a first input shaft first gear, which is arranged on the first input shaft in a non-torque-resistant manner and corresponds to the first synchromesh mechanism, is always in a meshing state with an intermediate shaft first gear, which is arranged on the intermediate shaft in a torque-resistant manner, wherein a first input shaft second gear, which is arranged on the first input shaft in a non-torque-resistant manner and corresponds to the first synchromesh mechanism, is always in a meshing state with an output shaft first gear, which is arranged on the output shaft in a torque-resistant manner, wherein an output shaft second gear and an output shaft third gear, which are arranged on the output shaft in a non-torque-resistant manner and correspond to the second synchromesh mechanism, are always in a meshing state, respectively, with a second input shaft first gear and a second input shaft second gear, which are arranged on the second input shaft in a torque-resistant manner, wherein the intermediate shaft is also provided with an intermediate shaft second gear in a torque-resistant manner, and the intermediate shaft second gear is always in a meshing state with the second input shaft second gear;
an electric motor, wherein the electric motor is always in transmission connection with the second input shaft; and
an engine and a dual clutch, wherein the dual clutch comprises a first clutch unit and a second clutch unit, the engine being selectively in transmission connection with the first input shaft via the first clutch unit and being selectively in transmission connection with the second input shaft via the second clutch unit.

2. The hybrid system according to claim 1 , wherein the dual clutch is arranged on a radial inner side of a rotor of the electric motor.

3. The hybrid system according to claim 1 , wherein one of:
a rotor of the electric motor is directly connected with the second input shaft in a coaxial manner; and
the electric motor is always in transmission connection with the second input shaft via one of the second input shaft first gear and the second input shaft second gear.

4. The hybrid system according to claim 3 , wherein one of:
the rotor of the electric motor is directly connected with the intermediate shaft in a coaxial manner; and
the electric motor is always in transmission connection with the second input shaft via one of a first gear pair consisting of the output shaft second gear and the second input shaft first gear, a second gear pair consisting of the output shaft third gear and the second input shaft second gear, and a third gear pairing consisting of an additional intermediate gear and the second input shaft first gear.

5. The hybrid system according to claim 1 , wherein the hybrid system is operable in one of a pure electric motor driving mode, a pure engine driving mode, and a hybrid driving mode, wherein:
in the pure electric motor driving mode, the engine is in a non-operating state, the electric motor is in an operating state, the first clutch unit and the second clutch unit are both disengaged, the first synchromesh mechanism is in a neutral state, and the second synchromesh mechanism is engaged with one of the output shaft second gear and the output shaft third gear, such that the electric motor transmits torque to the transmission for driving;
in the pure engine driving mode, the engine is in an operating state, the electric motor is in a non-operating state, one of the first clutch unit and the second clutch unit is engaged, and at least one of a) the first synchromesh mechanism is engaged with one of the first input shaft first gear and the first input shaft second gear, and b) the second synchromesh mechanism is engaged with one of the output shaft second gear and the output shaft third gear, such that the engine transmits torque to the transmission for driving; and
in the hybrid driving mode, the engine and the electric motor are both in an operating state, one of the first clutch unit and the second clutch unit is engaged, at least one of a) the first synchromesh mechanism is engaged with one of the first input shaft first gear and the first input shaft second gear, and b) the second synchromesh mechanism is engaged with one of a gear corresponding to the output shaft second gear and the output shaft third gear, such that the engine and the electric motor transmit torque to the transmission for driving.

6. The hybrid system according to claim 5 , wherein, when the hybrid system is in the pure engine driving mode, one of:
the first clutch unit is engaged and the second clutch unit is disengaged, the first synchromesh mechanism is engaged with the first input shaft first gear, and the second synchromesh mechanism is engaged with one of the output shaft second gear and the output shaft third gear;
the first clutch unit is engaged and the second clutch unit is disengaged, the first synchromesh mechanism is engaged with the first input shaft second gear, and the second synchromesh mechanism is in a neutral state; and
the first clutch unit is disengaged and the second clutch unit is engaged, the first synchromesh mechanism is in a neutral state, and the second synchromesh mechanism is engaged with one of the output shaft second gear and the output shaft third gear.

7. The hybrid system according to claim 5 , wherein, when the hybrid system is in the hybrid driving mode, one of:
the first clutch unit is engaged and the second clutch unit is disengaged, the first synchromesh mechanism is engaged with one of the first input shaft first gear and the first input shaft second gear, and the second synchromesh mechanism is engaged with one of the output shaft second gear or the output shaft third gear; and
the first clutch unit is disengaged and the second clutch unit is engaged, the first synchromesh mechanism is in a neutral state, and the second synchromesh mechanism is engaged with one of the output shaft second gear and the output shaft third gear.

8. The hybrid system according to claim 5 , wherein the hybrid system is operable in an idle charge mode, in which the engine and the electric motor are both in an operating state, the first clutch unit is disengaged and the second clutch unit is engaged, both the first synchromesh mechanism and the second synchromesh mechanism are in a neutral state, such that the engine transmits torque to the electric motor to enable the electric motor to charge a battery.

9. The hybrid system according to claim 5 , wherein the hybrid system is operable in a mode of starting the engine while driving in which the electric motor is in an operating state, the first clutch unit is disengaged and the second clutch unit is engaged, the first synchromesh mechanism is in a neutral state, and the second synchromesh mechanism is engaged with one of the output shaft second gear and the output shaft third gear, such that the electric motor transmits torque to the transmission while transmitting torque to the engine for starting the engine.

10. A vehicle, comprising the hybrid system according to claim 1 .

11. A hybrid system, comprising:
a transmission including:
a first input shaft;
a first synchromesh mechanism arranged on the first input shaft;
a fir

Assignees

• Schaeffler Technologies Ag

Inventors

• Li Zhihao

Classifications

• F16H3/091

  including a single countershaft · CPC title

• F16H3/089

  all of the meshing gears being supported by a pair of parallel shafts, one being the input shaft and the other the output shaft, there being no countershaft involved · CPC title

• F16H2200/0047

  the gear ratios comprising five forward speeds · CPC title

• F16H37/0806

  with a plurality of driving or driven shafts · CPC title

• B60Y2200/92

  Hybrid vehicles · CPC title