CN217347479U - Hybrid power transmission with compact structure - Google Patents

Abstract

The utility model discloses a compact structure's hybrid transmission, including engine, driving motor, generator, first motor shaft, second motor shaft, gear train. A transmission mechanism is arranged between an input shaft and an output shaft of the engine, the transmission mechanism comprises a clutch and a second motor shaft, a first gear is arranged on the input shaft, a sixth gear is arranged on the clutch, a second gear and a fifth gear are arranged on the second motor shaft, and the clutch is arranged on the output shaft; the second gear is meshed with the first gear, and the fifth gear is meshed with the sixth gear. The driving motor is connected with the output shaft through a gear and a first motor shaft, a third gear is arranged on the first motor shaft, a fourth gear is further arranged on the output shaft, and the third gear is meshed with the fourth gear. The utility model discloses need not to adopt the jackshaft, sharing driving motor shaft and generator shaft, compact structure, small in size, light in weight.

Description

Hybrid power transmission with compact structure

Technical Field

The utility model belongs to the technical field of the transmission of mixed-action vehicle driving system, concretely relates to compact structure's hybrid transmission.

Background

The multi-mode box adopts a parallel shaft layout, the gearbox of the multi-mode box is integrated or provided with three power sources of an engine, a motor and a generator, the internal part of the hybrid gearbox is connected with the engine, and a dual-motor power system can realize all hybrid power functions, such as a series function, a parallel function, a series-parallel hybrid function and the like.

The hybrid system is of a vehicle structure in the form of longitudinal rear drive, namely longitudinal rear wheel drive of an engine, and the driving mode adopted by most SUVs is the longitudinal rear drive driving mode and a non-bearing vehicle body structure with a crossbeam. The longitudinal rear-drive has the advantages that: 1) the front-rear weight ratio of the vehicle is close to 50: the golden ratio of 50 has good advantages on the dynamic control of the vehicle body, and can realize neutral steering; 2) the system can provide larger effective traction force and enhance the acceleration capability and the climbing capability of the automobile; 3) the rear drive has stronger controllability than the front drive, more space is provided for using a suspension system, and the support performance of the vehicle is better; 4) the vehicle counterweight is more balanced, the phenomenon of accelerating head raising and braking nod is improved, the whole comfort is stronger, and the reason for adopting the mode by the luxury car is also the reason.

The smaller the gearbox is, the smaller the gearbox bin can be reduced by a garage, the larger in-car sitting and storage space can be expanded under the condition that the car grade is not changed, more design space can be brought to the frame layout of an engine and a vehicle, and therefore the design of the longitudinal rear-drive hybrid transmission with the compact structure is urgently needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a new indulge and put rear-guard hybrid transmission, can realize pure electricity, increase journey, engine and directly drive, parallelly connected, compact structure simultaneously.

In order to achieve the above object, the present invention provides a hybrid transmission with compact structure, which comprises an engine, a driving motor, a generator, a first motor shaft, a second motor shaft, and a gear set;

a transmission mechanism is arranged between an input shaft and an output shaft of the engine, the transmission mechanism comprises a clutch and a second motor shaft, a first gear is arranged on the input shaft, a sixth gear is arranged on the clutch, a second gear and a fifth gear are arranged on the second motor shaft, and the clutch is arranged on the output shaft; the second gear is meshed with the first gear, and the fifth gear is meshed with the sixth gear;

the driving motor is connected with the output shaft through a gear and a first motor shaft, a third gear is arranged on the first motor shaft, a fourth gear is also arranged on the output shaft, the third gear is meshed with the fourth gear,

first motor shaft, second motor shaft, input shaft, output shaft parallel arrangement.

In the above-described compact hybrid transmission, the engine is provided with a damper.

In the above compact hybrid transmission, the input shaft and the output shaft are respectively connected with a mechanical pump, and the two mechanical pumps are connected to the valve block.

The utility model has the advantages that:

compact structure's hybrid transmission, for highly integrated P1P3 mixes two unification systems by force, compare the tradition and indulge rear-guard mixing system, except that can realize series drive and parking power generation function, three functions such as pure electric, engine direct drive, parallel mode can also be realized to this system. An intermediate shaft is not needed, and the driving motor shaft and the generator shaft are shared, so that the structure is compact, the size is small, the weight is light, the system rigidity is good, and the NVH performance is good.

Drawings

Fig. 1 is a schematic structural diagram of a conventional longitudinal rear-drive hybrid system in the background art of the present invention;

fig. 2 is a schematic structural view of a compact hybrid transmission according to the present invention;

FIG. 3 is a schematic diagram of a power transmission path of the compact hybrid transmission of the present invention in a pure electric mode;

fig. 4 is a schematic diagram of a power transmission route of the compact hybrid transmission according to the present invention in a series mode;

fig. 5 is a schematic diagram of a power transmission route of the compact hybrid transmission according to the present invention in a parallel mode;

FIG. 6 is a schematic diagram of a power transmission path of the compact hybrid transmission of the present invention in an engine direct-coupled mode;

FIG. 7 is a schematic diagram of a power transmission path of the compact hybrid transmission according to the present invention in a parking power generation mode;

fig. 8 is a schematic diagram of a power transmission route of the hybrid transmission with a compact structure in a braking energy recovery mode according to the present invention.

In the figure: 1. an engine; 2. a drive motor; 3. a generator; 4. an input shaft; 5. a first motor shaft; 6. a second motor shaft; 7. an output shaft; 8. a clutch; 9. a gear set; 901. a first gear; 902. a second gear; 903. a third gear; 904. a fourth gear; 905. a fifth gear; 906. and a sixth gear.

Detailed Description

The following drawings are included to illustrate preferred embodiments of the present invention, and it is to be understood that the preferred embodiments described herein are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the present invention.

As shown in fig. 2, a compact hybrid transmission includes an engine 1, a driving motor 2, a generator 3, a first motor shaft 5, a second motor shaft 6, and a gear set 9.

A transmission mechanism is arranged between an input shaft 4 and an output shaft 7 of the engine 1, the transmission mechanism comprises a clutch 8 and a second motor shaft 6, the input shaft 4 is provided with a first gear 901, the clutch 8 is provided with a sixth gear 906, the second motor shaft 6 is provided with a second gear 902 and a fifth gear 905, and the clutch 8 is arranged on the output shaft 7; the second gear 902 meshes with the first gear 901, and the fifth gear 905 meshes with the sixth gear 906. The driving motor 2 is connected with the output shaft 7 through a gear and a first motor shaft 5, a third gear 903 is arranged on the first motor shaft 5, a fourth gear 904 is further arranged on the output shaft 7, and the third gear 903 is meshed with the fourth gear 904. The first motor shaft 5, the second motor shaft 6, the input shaft 4 and the output shaft 7 are arranged in parallel.

In one example, a shock absorber is provided on the engine 1.

In one example, a mechanical pump is connected to each of the input shaft 4 and the output shaft 7, and the two mechanical pumps are connected to the valve block.

The utility model discloses a theory of operation:

the utility model discloses sharing driving motor shaft and generator shaft, compact structure, small in size, light in weight, system rigidity are good, and the NVH performance is good, can bring more design spaces for the frame overall arrangement of engine 1, vehicle.

The utility model discloses a following mode:

1. pure electric mode: as shown in fig. 3, when the vehicle starts or at a low speed, the driving motor 2 directly drives the entire vehicle, and power is transmitted from the driving motor 2 to the output shaft 7 through the first motor shaft 5, the third gear 903 and the fourth gear 904, so that certain economical efficiency and dynamic property of the entire vehicle are ensured;

2. series mode: as shown in fig. 4, when the SOC of the battery of the vehicle is lower than a threshold value at a certain speed, the clutch 8 is disconnected, and at this time, the engine 1 is in a state of driving the generator 3 to generate electricity, and the power of the engine 1 is transmitted to the generator 3 through the input shaft 4, the first gear 901, the second gear 902, and the second motor shaft 6; the generator 3 transmits electricity to the driving motor 2, and power is transmitted from the driving motor 2 to the output shaft 7 through the first motor shaft 5, the third gear 903 and the fourth gear 904;

3. parallel mode: as shown in fig. 5, when the vehicle is in some conditions of rapid acceleration, overtaking or high-torque starting, the engine 1 is directly involved in driving, the generator 3 is not involved in driving or generating electricity, and the driving motor 2 is involved in auxiliary driving. At the moment, the clutch 8 is closed, and the power of the engine 1 is transmitted to the output shaft 7 through the input shaft 4, the first gear 901, the second gear 902, the second motor shaft 6, the fifth gear 905, the sixth gear 906 and the clutch 8; the power of the driving motor 2 is transmitted to the output shaft 7 through the first motor shaft 5, the third gear 903 and the fourth gear 904, so that the two power sources participate in driving together, and strong dynamic performance is brought to the vehicle.

4. Engine 1 direct coupled mode: as shown in fig. 6, when the vehicle reaches a certain high speed section, the clutch 8 is closed, and the power of the engine 1 is transmitted to the output shaft 7 through the input shaft 4, the first gear 901, the second gear 902, the second motor shaft 6, the fifth gear 905, the sixth gear 906 and the clutch 8, so as to ensure the dynamic property of the whole vehicle;

5. in the parking power generation mode, as shown in fig. 7, when the vehicle is parked, the clutch 8 is disconnected, the engine 1 is in a state of driving the generator 3 to generate power, the power of the engine 1 is transmitted to the generator 3 through the input shaft 4, the first gear 901, the second gear 902 and the second motor shaft 6, the engine 1 works in a high-efficiency area to drive the generator 3 to generate power, and the driving motor 2 is in a state of zero torque and zero rotating speed;

6. braking energy recovery mode: as shown in fig. 8, when the vehicle is braked, the clutch 8 is disengaged, the torque of the output shaft 7 is transmitted to the driving motor 2 through the eighth gear, the third gear 903, and the first motor shaft 5, and the driving motor 2 recovers energy to generate electricity.

The foregoing illustrates and describes the general principles, features and advantages of the present invention. It should be understood by those skilled in the art that the foregoing embodiments are merely illustrative of the technical concepts and features of the present invention, and the purpose of the present invention is to provide a person skilled in the art with the ability to understand the contents of the present invention and implement the same, and not to limit the scope of the present invention.

Claims (3)

1. A hybrid power transmission with a compact structure comprises an engine (1), a driving motor (2), a generator (3), a first motor shaft (5), a second motor shaft (6) and a gear set (9);

the method is characterized in that: a transmission mechanism is arranged between an input shaft (4) and an output shaft (7) of the engine (1), the transmission mechanism comprises a clutch (8) and a second motor shaft (6), a first gear (901) is arranged on the input shaft (4), a sixth gear (906) is arranged on the clutch (8), a second gear (902) and a fifth gear (905) are arranged on the second motor shaft (6), and the clutch (8) is arranged on the output shaft (7); the second gear (902) meshes with the first gear (901), and the fifth gear (905) meshes with the sixth gear (906);

the driving motor (2) is connected with the output shaft (7) through a gear and a first motor shaft (5), the first motor shaft (5) is provided with a third gear (903), the output shaft (7) is also provided with a fourth gear (904), the third gear (903) is meshed with the fourth gear (904),

the first motor shaft (5), the second motor shaft (6), the input shaft (4) and the output shaft (7) are arranged in parallel.

2. A compact hybrid transmission as set forth in claim 1 wherein: the engine (1) is provided with a shock absorber.

3. A compact hybrid transmission as defined in claim 1, wherein: the input shaft (4) and the output shaft (7) are respectively connected with a mechanical pump, and the two mechanical pumps are connected to the valve block.

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