CN212422801U

CN212422801U - Hybrid power system

Info

Publication number: CN212422801U
Application number: CN202020331761.6U
Authority: CN
Inventors: 宋任波; 刘伟华; 郑志刚; 熬忠
Original assignee: SUZHOU ASIA PACIFIC METAL CO LTD
Current assignee: Suzhou Asia Pacific Jingrui Transmission Technology Co ltd
Priority date: 2020-03-17
Filing date: 2020-03-17
Publication date: 2021-01-29
Anticipated expiration: 2030-03-17

Abstract

The utility model discloses a hybrid power system, including engine and wheel, still include shaft coupling, first motor, second motor, first clutch, second clutch, first epicyclic train, second epicyclic train and stopper. The utility model utilizes the respective characteristics of the engine and the motor, realizes the optimal performance and oil consumption to drive the vehicle through the speed change of the secondary planetary gear, and has simpler structure; the gearbox and the motor are both modularized; the double motors and the double planet rows can realize stable torque change through different combinations of the two clutches and the brake, and have wider change range, stronger adaptability and simpler structure; when the gear is shifted, the power is not completely interrupted, and the gear shifting device is suitable for special-purpose vehicles with complex running conditions.

Description

Hybrid power system

Technical Field

The utility model belongs to hybrid power system development field, concretely relates to hybrid power system.

Background

At present, automobile emission and energy consumption become global problems, and with more and more strict environmental protection measures in various countries in the world, more and more proposals for replacing fuel engine automobiles, such as hydrogen energy automobiles, fuel cell automobiles, hybrid automobiles and the like, are provided; at present, the hybrid electric vehicle has the most practical value and a commercial operation mode, and only has the hybrid electric vehicle. Hybrid vehicles with low emissions and low energy consumption have become one of the mainstream of the current automobile industry development, and the key of the hybrid vehicle is a hybrid system, and the performance of the hybrid vehicle is directly related to the performance of the whole hybrid vehicle.

The hybrid power means that the automobile adopts two driving modes of fuel oil driving and electric driving; the advantages that when the vehicle is started and stopped or at low speed, the vehicle can be driven only by the motor, and the engine does not work when the vehicle does not reach a certain speed; therefore, the engine can be prevented from being in an inefficient working condition state, and the electric energy is sourced from the engine and only needs to be added with oil.

Through the development of more than ten years, the hybrid power system assembly develops from the original discrete structure of an engine and a motor to the integrated and modular structure of the engine motor and a gearbox; if the three-stage planetary gear train is considered to be adopted, the torque variation range is wide, but the structure is too complex, the size is large, and the system is not suitable for low-cost special-purpose vehicles, while the traditional two-stage planetary gear train hybrid system is not suitable for special-purpose vehicles with complex operation conditions because the power for gear shifting is interrupted. In a word, the existing hybrid system has a complex structure, a low fuel economy ratio, small torque coverage and the like, and the power for shifting is interrupted, so that the special market requirements can not be completely met.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model aims to provide a hybrid power system.

In order to achieve the above objects and other related objects, the present invention provides a technical solution: a hybrid power system comprises an engine, wheels, a coupler, a first motor, a second motor, a first clutch, a second clutch, a first epicyclic gear train, a second epicyclic gear train and a brake;

the first rotating wheel system comprises a first planet wheel, a first sun wheel, a first gear ring and a first planet carrier, the first planet wheel is respectively connected with the first sun wheel and the first gear ring, the first planet wheel is connected with the first planet carrier, the first planet carrier is connected with the wheel, the first gear ring is provided with the brake, and the first sun wheel is in transmission connection with the second motor through the first clutch;

the second epicyclic gear train includes second planet wheel, second sun gear, second ring gear and second planet carrier, the second planet wheel respectively with the second sun gear with the second ring gear is connected, the second planet wheel with the engine passes through the second planet carrier links to each other, the second ring gear with first planet carrier connects, the second sun gear with pass through between the first motor the transmission of second clutch is connected, the engine with set up between the second planet carrier the shaft coupling.

The preferable technical scheme is as follows: in a first working state, the engine is in a closed or idling state, the first clutch is disconnected, the brake is combined with the first gear ring, and the second motor is in a running state;

in a second working state, the engine is in a starting state, the first clutch is disconnected, the brake is combined with the first gear ring, and the first motor is in a running state;

in a third working state, the engine is in a starting state, the first clutch is arranged in a closed state, the brake and the first gear ring are arranged in a separated state, and the second motor is in a running state and has a driving transmission ratio of 1: 1;

in a fourth working state, the engine is in a starting state, the second clutch is in a closed state, the first motor is in a running state, and the second motor is in a running state;

in a fifth working state, the engine is in an idling state, and the second motor is in a running state;

and in a sixth working state, the engine is in a starting or idling state, and the first motor is in a running state.

The preferable technical scheme is as follows: the first epicyclic gear train is positioned on the right side of the second epicyclic gear train, the first motor is positioned on the left side of the second epicyclic gear train, the second motor is positioned on the right side of the first epicyclic gear train, and the engine is arranged close to one side of the first motor.

The preferable technical scheme is as follows: the shaft coupling is an elastic shaft coupling.

The preferable technical scheme is as follows: a drive axle is arranged between the first planet carrier and the wheels, the first planet carrier is connected with an output shaft, and the output shaft is connected with the drive axle through a universal transmission shaft.

Because of the application of the technical scheme, compared with the prior art, the utility model the advantage that has is:

the utility model utilizes the respective characteristics of the engine and the motor, realizes the optimal performance and oil consumption to drive the vehicle through the speed change of the secondary planetary gear, and has simpler structure; the gearbox and the motor are both modularized; the double motors and the double planet rows can realize stable torque change through different combinations of the two clutches and the brake, and have wider change range, stronger adaptability and simpler structure; when the gear is shifted, the power is not completely interrupted, and the gear shifting device is suitable for special-purpose vehicles with complex running conditions.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the present invention.

In the above drawings, the engine 1, the coupling 2, the first motor 3, the second sun gear 4, the second ring gear 5, the first planet carrier 6, the first planet gear 7, the brake 8, the first ring gear 9, the first clutch 10, the second motor 11, the first sun gear 12, the second planet carrier 13, the second planet gear 14, and the second clutch 15.

Detailed Description

The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.

Please refer to fig. 1 and fig. 2. It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.

Example (b): as shown in fig. 1 and 2, a hybrid system includes an engine 1 and wheels, and further includes a coupling 2, a first electric machine 3, a second electric machine 11, a first clutch 10, a second clutch 15, a first epicyclic gear train, a second epicyclic gear train, and a brake 8; the first rotating wheel system comprises a first planet wheel 7, a first sun wheel 12, a first gear ring 9 and a first planet carrier 6, the first planet wheel 7 is respectively connected with the first sun wheel 12 and the first gear ring 9, the first planet wheel 7 is connected with the first planet carrier 6, the first planet carrier 6 is connected with a wheel, the first gear ring 9 is provided with a brake 8, and the first sun wheel 12 is in transmission connection with a second motor 11 through a first clutch 10; the second epicyclic train comprises a second planet wheel 14, a second sun wheel 4, a second ring gear 5 and a second planet carrier 13, the second planet wheel 14 is respectively connected with the second sun wheel 4 and the second ring gear 5, the second planet wheel 14 is connected with the engine 1 through the second planet carrier 13, the second ring gear 5 is connected with the first planet carrier 6, the second sun wheel 4 is in transmission connection with the first motor 3 through a second clutch 15, and a coupling 2 is arranged between the engine 1 and the second planet carrier 13.

In the first working state, the engine 1 is in a closed or idling state, the first clutch 10 is disconnected, the brake 8 is combined with the first gear ring 9, and the second motor 11 is in a running state; the working state is a pure electric starting state, the engine is off or idling, the first clutch 10(C1) is disconnected, the brake 8(B1) is combined, the second motor 11(M2) is directly driven to start after speed reduction and torque increase, and the starting torque is large.

In the second working state, the engine 1 is in a starting state, the first clutch 10 is disconnected, the brake 8 is combined with the first gear ring 9, and the first motor 3 is in a running state; the working state is a hybrid starting state, the first clutch 10(C1) is disconnected, the brake 8(B1) is combined, the engine drives the first motor 3(M1) to generate electricity and output power, the vehicle starts smoothly, the starting torque is small, the second motor 11(M2) can also drive the vehicle synchronously to start together, the starting torque is maximum, the vehicle climbing performance is strongest, and the running mode of the vehicle after starting can be determined according to the battery capacity, the vehicle load, the vehicle speed and the like.

In a third working state, when the speed is increased, the engine 1 is in a starting state, the first clutch 10 is closed, the brake 8 and the first gear ring 9 are separated, and the second motor 11 is in a running state and has a driving transmission ratio of 1: 1; the working state is a medium-high speed working condition state, and the vehicle runs at a medium and high speed.

In the fourth operating state, the engine 1 is in a starting state, the second clutch 15 is in a closed state, the first motor 3 is in a running state, and the second motor 11 is in a running state; the working state is a medium-speed direct-drive working condition state, in a specific medium-speed range, the second clutch 15(C2) is combined, the engine directly drives the vehicle to run efficiently, the first motor 3(M1) and the second motor 11(M2) can both participate in driving or power generation, and the running mode of the working state can be determined according to the battery capacity, the vehicle load, the vehicle speed and the like.

In the fifth working state, the engine 1 is in an idling state, and the second motor 11 is in a running state; when the vehicle slowly runs downhill, the engine idles, the second motor 11(M2) generates electricity to recover energy, and the first motor 3(M1) can also generate electricity to recover energy at a specific speed; during the deceleration braking, the engine is idling, the second motor 11(M2) generates electricity to recover energy, and the first motor 3(M1) can also generate electricity to recover energy at a specific vehicle speed.

In the sixth working state, the engine 1 is in a starting or idling state, and the first motor 3 is in a running state; when the vehicle is parked for power generation, the engine is idling or normally operated, and the first motor 3(M1) generates power.

The preferred embodiment is: the first epicyclic gear train is positioned at the right side of the second epicyclic gear train, the first motor 3 is positioned at the left side of the second epicyclic gear train, the second motor 11 is positioned at the right side of the first epicyclic gear train, and the engine 1 is arranged at one side close to the first motor 3. The layout is safe and effective, the space is reasonably utilized, and the power distribution device is suitable for different power distribution modes.

The preferred embodiment is: the coupling 2 is an elastic coupling 2. The rotary shaft is integrally formed, has zero rotary clearance, can synchronously run, has the function of compensating radial deviation, angular deviation and axial deviation, and has the same clockwise and anticlockwise rotary characteristics.

The preferred embodiment is: a drive axle is arranged between the first planet carrier 6 and the wheels, the first planet carrier 6 is connected with an output shaft, and the output shaft is connected with the drive axle through a universal transmission shaft. When the first clutch 10 is closed, the second motor 11 drives the first sun gear 12 to rotate, the first sun gear 12 drives the first planet gear 7 to rotate through the first gear ring 9, the first planet gear 7 drives the first planet carrier 6 to rotate, the first planet carrier 6 drives the output shaft to rotate, the output shaft drives the universal transmission shaft to rotate, and the universal transmission shaft drives the wheels through the drive axle. Under the condition that the design parameters can reach the national standard, the first planet carrier 6 and the output shaft can be designed as an integrated structure, so that the mechanical strength of the planet carrier is high, and the stability is good.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. A hybrid powertrain system comprising an engine and wheels, characterized in that: the clutch is characterized by also comprising a coupler, a first motor, a second motor, a first clutch, a second clutch, a first epicyclic gear train, a second epicyclic gear train and a brake;

2. A hybrid powertrain, as claimed in claim 1, wherein:

in a first working state, the engine is in a closed or idling state, the first clutch is disconnected, the brake is combined with the first gear ring, and the second motor is in a running state;

3. A hybrid powertrain, as claimed in claim 2, wherein: the first epicyclic gear train is positioned on the right side of the second epicyclic gear train, the first motor is positioned on the left side of the second epicyclic gear train, the second motor is positioned on the right side of the first epicyclic gear train, and the engine is arranged close to one side of the first motor.

4. A hybrid powertrain, as claimed in claim 3, wherein: the shaft coupling is an elastic shaft coupling.

5. A hybrid system according to claim 4, wherein: a drive axle is arranged between the first planet carrier and the wheels, the first planet carrier is connected with an output shaft, and the output shaft is connected with the drive axle through a universal transmission shaft.