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CN-121973615-A - Hybrid power system and vehicle

CN121973615ACN 121973615 ACN121973615 ACN 121973615ACN-121973615-A

Abstract

The invention relates to the technical field of power systems and discloses a hybrid power system and a vehicle, wherein the hybrid power system comprises an engine, a motor and a motor, wherein the engine is suitable for driving an input shaft of the engine to rotate; the engine driving device comprises a driving motor, an output shaft, an engine input gear, a generator, a motor driving gear and an idler gear, wherein the driving motor is suitable for driving the driving motor input shaft to rotate, the output shaft is suitable for being in transmission connection with the engine input shaft and/or the driving motor input shaft, the engine input gear is fixedly connected with the engine input shaft in a coaxial mode, the generator is connected with the motor driving gear, and the idler gear is meshed between the motor driving gear and the engine input gear and used for transmitting power. According to the hybrid power system provided by the invention, the diameter of the motor driving gear can be reduced through the introduction of the idler gear, so that the radial space occupation of the motor driving gear is reduced, the integrated layout of the motor and the transmission system is realized in a compact engine cabin, and the space utilization rate is improved.

Inventors

  • SHAO WENLIN
  • SUN FENG
  • FU JUN

Assignees

  • 极光湾(宁波)智能科技有限公司
  • 极光湾科技有限公司
  • 浙江吉利控股集团有限公司

Dates

Publication Date
20260505
Application Date
20260115

Claims (10)

  1. 1. A hybrid system, comprising: An engine (1) adapted to drive the engine input shaft (22) to rotate; a drive motor (14) adapted to drive rotation of a drive motor input shaft (26); an output shaft (24) adapted for driving connection with said engine input shaft (22) and/or said drive motor input shaft (26); An engine input gear (3) which is fixedly connected with the engine input shaft (22) in a coaxial manner; a generator (6) connected with a motor driving gear (5); And an idler wheel (4) meshed between the motor driving gear (5) and the engine input gear (3) for transmitting power.
  2. 2. The hybrid system as set forth in claim 1, further comprising: An engine driving gear (8) coaxially arranged with the engine input shaft (22) and rotatable relative to each other; -a clutch (7) for connecting or disconnecting the engine driving gear (8) with the engine input shaft (22); Along the axial direction of the engine input shaft (22), the engine input gear (3) is arranged between the engine (1) and the engine driving gear (8); Along the radial direction of the engine input shaft (22), the generator (6) overlaps with the projection of the engine driving gear (8).
  3. 3. The hybrid system as set forth in claim 2, further comprising: The intermediate shaft (23) is arranged in parallel with the engine input shaft (22), the intermediate shaft (23) is coaxially and fixedly connected with an engine driven gear (9), and the engine driven gear (9) is meshed with the engine driving gear (8); the X-gear driving gear is coaxially arranged on the intermediate shaft (23); an output shaft (24) arranged in parallel with the intermediate shaft (23); And the Y-gear driven gears are coaxially arranged on the output shaft (24) and are meshed with the X-gear driving gears in a one-to-one correspondence manner, wherein X=Y and is an integer greater than or equal to 1.
  4. 4. A hybrid powertrain according to claim 3, characterized in that the drive gears comprise a third gear drive gear (12), a first gear drive gear (11) and a second gear drive gear (10) arranged at intervals along the axial direction of the intermediate shaft (23); The driven gears comprise a third-gear driven gear (17), a first-gear driven gear (18) and a second-gear driven gear (20), are arranged at intervals along the axial direction of the output shaft (24) and are respectively meshed with the corresponding driving gears; The gear selecting and shifting mechanism is used for the driving gear and the driven gear; The three-gear driving gear (12) is fixedly connected with the intermediate shaft (23) in a coaxial way, the three-gear driven gear (17) is coaxially arranged with the output shaft (24) and can rotate relatively, or the three-gear driven gear (17) is fixedly connected with the output shaft (24) in a coaxial way, and the three-gear driving gear (12) is coaxially arranged with the intermediate shaft (23) and can rotate relatively; The first-gear driving gear (11) is fixedly connected with the intermediate shaft (23) in a coaxial way, the first-gear driven gear (18) is coaxially arranged with the output shaft (24) and can rotate relatively, or the first-gear driven gear (18) is fixedly connected with the output shaft (24) in a coaxial way, and the first-gear driving gear (11) is coaxially arranged with the intermediate shaft (23) and can rotate relatively; The two-gear driving gear (10) is fixedly connected with the intermediate shaft (23) in a coaxial way, the two-gear driven gear (20) and the output shaft (24) are coaxially arranged and can rotate relatively, or the two-gear driven gear (20) and the output shaft (24) are fixedly connected in a coaxial way, and the two-gear driving gear (10) and the intermediate shaft (23) are coaxially arranged and can rotate relatively.
  5. 5. The hybrid system according to claim 4, wherein the third-gear drive gear (12), the first-gear drive gear (11) and the second-gear drive gear (10) are all fixedly connected coaxially with the intermediate shaft (23), and the third-gear driven gear (17), the first-gear driven gear (18) and the second-gear driven gear (20) are all coaxially arranged with the output shaft (24) and rotatable relative to each other; the gear selecting and shifting mechanism comprises: a first synchronizer (16) disposed on the output shaft (24), the first synchronizer (16) being adapted to selectively engage with the third-gear driven gear (17); A second synchronizer (19) disposed on the output shaft (24), the second synchronizer (19) being adapted to selectively engage with the first-gear driven gear (18) or the second-gear driven gear (20).
  6. 6. The hybrid system as set forth in claim 1, further comprising: The driving gear (13) of the driving motor is coaxially and fixedly connected with the input shaft (26) of the driving motor; And the driving motor driven gear (15) is coaxially and fixedly connected with the output shaft (24) and meshed with the driving motor driving gear (13).
  7. 7. The hybrid system as set forth in claim 5, further comprising: The driving gear (13) of the driving motor is coaxially and fixedly connected with the input shaft (26) of the driving motor; The gear selecting and shifting mechanism further comprises a third synchronizer, wherein the third synchronizer is suitable for being selectively engaged with the driven gear (15) of the driving motor.
  8. 8. The hybrid system according to any one of claims 1 to 7, further comprising: A battery (25), the battery (25) being electrically connected to the generator (6), and/or the battery (25) being electrically connected to the drive motor (14).
  9. 9. The hybrid system according to any one of claims 1 to 7, further comprising: An output gear (27) which is fixedly connected with the output shaft (24) in a coaxial manner; a differential (21) engaged with the output gear (27) for transmitting power to the wheels.
  10. 10. A vehicle, characterized by comprising: a vehicle body; And a hybrid system according to any one of claims 1 to 9, mounted on the vehicle body, for providing driving force.

Description

Hybrid power system and vehicle Technical Field The invention relates to the technical field of power systems, in particular to a hybrid power system and a vehicle. Background With the acceleration of the global automotive industry toward electrified transformation, hybrid electric vehicles (HEV/PHEV) have become an important direction of new energy technology development by virtue of their comprehensive advantages in fuel economy, cruising ability and power performance. Longitudinally-arranged hybrid gearboxes have received wide attention in recent years due to their unique advantages of adapting to high-end SUVs, off-road and commercial vehicles. However, in the related art, the parallel shaft type hybrid gearbox has complex structure and large occupied space under the longitudinal layout, so that the whole vehicle is difficult to arrange, and particularly in a vehicle type with compact engine room space, the integration difficulty of a motor, an electric control and a transmission system is obviously increased. Disclosure of Invention In view of the above, the present invention provides a hybrid power system and a vehicle to solve the problem that the hybrid gearbox occupies a large space in a vertical layout. In a first aspect, the present invention provides a hybrid system comprising: the engine is suitable for driving an engine input shaft to rotate; the driving motor is suitable for driving the input shaft of the driving motor to rotate; The output shaft is suitable for being in transmission connection with an engine input shaft and/or a driving motor input shaft; the engine input gear is coaxially and fixedly connected with the engine input shaft; a generator connected with a motor driving gear; and the idler gear is meshed between the motor driving gear and the engine input gear and is used for transmitting power. The transmission mechanism has the beneficial effects that the diameter of the motor driving gear can be reduced through the introduction of the idler gear, so that the radial space occupation of the motor driving gear is reduced, the integrated layout of the motor and the transmission system is realized in a compact engine compartment, and the space utilization rate is improved. In an alternative embodiment, the method further comprises: The engine driving gear is coaxially arranged with the engine input shaft and can rotate relatively; The clutch is used for connecting or disconnecting the engine driving gear with the engine input shaft; The engine input gear is arranged between the engine and the engine driving gear along the axial direction of the engine input shaft; along the radial direction of the engine input shaft, the generator overlaps with the engine driving gear projection. The power transmission device has the beneficial effects that through the arrangement of the idler wheels, the size of the motor driving gear is reduced, the radial overlapping area of the engine driving gear is fully utilized to arrange the generator, the occupation of the axial space is effectively shortened, the highly integrated design is realized, the power transmission efficiency is ensured, and meanwhile, the compactness of the whole vehicle arrangement is remarkably improved. In an alternative embodiment, the method further comprises: The intermediate shaft is arranged in parallel with the engine input shaft, is coaxially and fixedly connected with an engine driven gear, and is meshed with the engine driving gear; The X-gear driving gear is coaxially arranged on the intermediate shaft; The output shaft is arranged in parallel with the intermediate shaft; and the Y-gear driven gears are coaxially arranged on the output shaft and meshed with the X-gear driving gears in a one-to-one correspondence manner, wherein X=Y and is an integer greater than or equal to 1. The multi-stage speed reduction or acceleration transmission device has the beneficial effects that the power of the engine is transmitted to the intermediate shaft through the engine driving gear, and then the multi-stage speed reduction or acceleration transmission is realized through the meshing combination of the X-gear driving gear and the Y-gear driven gear of different gears, so that the power requirement of the whole vehicle under different working conditions is met, the power performance is improved, the working interval of the engine under different vehicle speeds is optimized, the engine always runs in a high-efficiency interval, and the acceleration performance and the high-speed cruising economy of the whole vehicle are improved. In an alternative embodiment, the driving gears comprise a third gear driving gear, a first gear driving gear and a second gear driving gear which are arranged at intervals along the axial direction of the intermediate shaft; the driven gear comprises a third-gear driven gear, a first-gear driven gear and a second-gear driven gear, which are arranged at intervals along the axial direction of the output sh