CN215360903U

CN215360903U - Hybrid drive for a motor vehicle

Info

Publication number: CN215360903U
Application number: CN202120913176.1U
Authority: CN
Inventors: 彭飞; 罗瑞田; 汪国建; 尹文杰
Original assignee: Chongqing Tsingshan Industrial Co Ltd
Current assignee: Chongqing Tsingshan Industrial Co Ltd
Priority date: 2021-04-29
Filing date: 2021-04-29
Publication date: 2021-12-31
Anticipated expiration: 2031-04-29

Abstract

A hybrid power transmission device of a motor vehicle comprises an engine, a generator and a driving motor, wherein an input shaft is fixedly connected with the engine, the driving motor is fixedly connected with a hollow shaft, the generator is fixedly connected with a solid shaft, the hollow shaft is sleeved on the solid shaft in a hollow mode to form a concentric shaft, and an output shaft is parallel to the solid shaft and is positioned on the same axis line with the input shaft; a first driving gear is circumferentially fixed on the input shaft, a first driven gear is circumferentially fixed on the solid shaft, and the first driven gear is meshed with the first driving gear; a second driving gear is circumferentially fixed on the hollow shaft, a second driven gear is circumferentially fixed on the output shaft, and the second driven gear is meshed with the second driving gear; a first clutch is arranged between the hollow shaft and the first driven gear, a first friction disc of the first clutch is fixedly connected with the first driven gear, and a second friction disc is circumferentially fixed with the hollow shaft; the input shaft, the hollow shaft, the solid shaft and the output shaft are supported on the box body through bearings respectively.

Description

Hybrid drive for a motor vehicle

Technical Field

The utility model relates to the technical field of hybrid power, in particular to a hybrid power transmission device of a motor vehicle.

Background

At present, most hybrid vehicles adopt an oil-electricity hybrid power device, and oil-electricity hybrid power devices developed by a plurality of automobile manufacturers adopt a double-motor structure, namely the oil-electricity hybrid power device comprises an engine obtaining power from fuel oil and a driving motor running by electric power, and a generator is additionally arranged, the generator utilizes the power generated by the running of the vehicles to generate electricity so as to provide electric energy for the vehicles, and after the engine stops, the driving motor is utilized to drive the vehicles to run, so that the exhaust emission of the vehicles is reduced, and the environment is protected. The connection and control among the engine, the generator, and the driving motor have a direct influence on the traveling performance of the hybrid vehicle.

Patent publication No. CN 110962573A, hybrid drive system and vehicle, discloses a hybrid drive system with dual motors, which comprises an engine, a first motor, a second motor, a motor gear, a first shaft, a 1-gear driving gear, a clutch, a 2-gear driving gear, a second shaft, a third shaft, a 1-gear driven gear, a synchronizer, a 2-gear driven gear, a main reduction driving gear and a main reduction driven gear, wherein the two-gear speed ratio and the pure electric drive two-gear speed ratio of the engine can be realized by controlling the engaging state of the clutch and the synchronizer, the working modes of pure electric drive of the motor, series drive, parallel drive, direct drive of the engine and the like are realized, although the engine can work in a region with higher fuel economy, the fuel economy of the vehicle is improved while the power performance of the vehicle is ensured, however, in the two-gear speed ratio switching process of engine power transmission, the clutch and the synchronizer need to cooperate, and due to the structural characteristics of the synchronizer, the control process is complex, power interruption is easy to occur, and the driving performance is affected.

Disclosure of Invention

The utility model aims to provide a hybrid power transmission device of a motor vehicle, which does not use a synchronizer, ensures the power performance of the motor vehicle, improves the fuel economy of the vehicle, avoids the power interruption which is very easy to generate in the gear shifting process caused by the synchronizer and improves the driving performance of the motor vehicle.

The purpose of the utility model is realized by adopting the following scheme: a hybrid power transmission device of a motor vehicle comprises an engine, a generator and a driving motor, wherein an input shaft is fixedly connected with the engine, the driving motor is fixedly connected with a hollow shaft, the generator is fixedly connected with a solid shaft, the hollow shaft is sleeved on the solid shaft in a hollow mode to form a concentric shaft, and an output shaft is parallel to the solid shaft and is positioned on the same axis line with the input shaft;

a first driving gear is circumferentially fixed on the input shaft, a first driven gear is circumferentially fixed on the solid shaft, and the first driven gear is meshed with the first driving gear;

a second driving gear is circumferentially fixed on the hollow shaft, a second driven gear is circumferentially fixed on the output shaft, and the second driven gear is meshed with the second driving gear;

a first clutch is arranged between the hollow shaft and the first driven gear, a first friction disc of the first clutch is fixedly connected with the first driven gear, and a second friction disc is circumferentially fixed with the hollow shaft;

the input shaft, the hollow shaft, the solid shaft and the output shaft are supported on the box body through bearings respectively.

Furthermore, a second clutch is arranged between the input shaft and the output shaft, a driving friction disc of the second clutch is fixedly connected with the first driving gear, and a driven friction disc is fixedly connected with the second driven gear.

The utility model has the following beneficial effects: an input shaft is fixedly connected with the engine, the driving motor is fixedly connected with a hollow shaft, and the hollow shaft can be electrified to drive a motor shaft of the driving motor to rotate, or the hollow shaft can be rotated by utilizing the power of the engine to drive the motor shaft of the driving motor to rotate to generate electricity so as to provide electric energy for the storage battery. The generator is fixedly connected with a solid shaft, the hollow shaft is sleeved on the solid shaft to form a concentric shaft, the generator does not participate in driving the motor vehicle, only generates electric energy through the rotation of the solid shaft and stores the electric energy in the accumulator jar, and an output shaft is parallel to the solid shaft, is positioned on the same axial line with the input shaft and is used for connecting the input end of the gearbox;

a first driving gear is circumferentially fixed on the input shaft, a first driven gear is circumferentially fixed on the solid shaft and is meshed with the first driving gear, and the input power of the engine is transmitted to the input end of the generator through the first driving gear, the first driven gear and the solid shaft on the input shaft in sequence; the input power of the generator is adjusted through the transmission ratio of a gear pair consisting of a first driving gear and a first driven gear;

the power of the driving motor is transmitted to the output shaft through the hollow shaft, the second driving gear and the second driven gear in sequence, and the output power of the output shaft is adjusted through the transmission ratio of a gear pair consisting of the second driving gear and the second driven gear;

a first clutch is arranged between the hollow shaft and the first driven gear, a first friction disc of the first clutch is fixedly connected with the first driven gear, and a second friction disc is circumferentially fixed with the hollow shaft and used for realizing the connection and interruption of the power of the engine;

Furthermore, a second clutch is arranged between the input shaft and the output shaft, a driving friction disc of the second clutch is fixedly connected with the first driving gear, a driven friction disc is fixedly connected with the second driven gear, and the power of the engine can be directly transmitted to the output shaft through the second clutch so as to directly realize the connection and the interruption of the power of the engine.

The utility model has the following advantages:

the utility model does not adopt a synchronizer, can avoid power interruption which is very easy to generate in the gear shifting process caused by the synchronizer, and improves the driving performance of the motor vehicle;

the utility model has simple structure, clear function of each component and low cost, and is more beneficial to the integration and matching of the hybrid power of the motor vehicle;

the technical scheme of the utility model has good expansibility, can realize more reasonable modularization and platformization development, and can meet the requirements of more vehicle types;

the technical scheme of the utility model can realize direct drive of the engine and can meet the requirements of a rear-drive hybrid power transmission system of a motor vehicle.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural diagram of another embodiment of the present invention.

Detailed Description

As shown in fig. 1 to 2, a hybrid power transmission device of a motor vehicle includes an engine 1, a generator 2, a driving motor 3, an input shaft 4 fixedly connected with an output shaft of the engine 1, a rotor shaft of the driving motor 3 fixedly connected with a hollow shaft 5, a rotor shaft of the generator 2 fixedly connected with a solid shaft 6, the hollow shaft 5 being sleeved on the solid shaft 6 to form a concentric shaft, an output shaft 7 being parallel to the solid shaft 6 and being located on the same axial line with the input shaft 4;

a first driving gear 8 is circumferentially fixed on the input shaft 4, a first driven gear 9 is circumferentially fixed on the solid shaft 6, and the first driven gear 9 is meshed with the first driving gear 8;

a second driving gear 10 is circumferentially fixed on the hollow shaft 5, a second driven gear 11 is circumferentially fixed on the output shaft 7, and the second driven gear 11 is meshed with the second driving gear 10;

a first clutch 12 is arranged between the hollow shaft 5 and the first driven gear 9, a first friction disc of the first clutch 12 is fixedly connected with the first driven gear 9, and a second friction disc is circumferentially fixed with the hollow shaft 5;

the input shaft 4, the hollow shaft 5, the solid shaft 6 and the output shaft 7 are supported on the box body through bearings respectively.

The operating modes are as follows:

engine power shift mode: the first clutch 12 is combined, the driving motor 3 does not output power, the power of the engine 1 is sequentially transmitted to the hollow shaft 5 through the input shaft 4, the first driving gear 8, the first driven gear 9 and the first clutch 12, the power on the hollow shaft 5 is respectively transmitted to the driving motor 3 and the second driving gear 10, a motor shaft of the driving motor 3 is driven by the power of the engine 1 to rotate to generate electric energy to be stored in a power battery, the power transmitted by the second driving gear 10 is transmitted to the output shaft 7 through being meshed with the second driven gear 11 and is used for being connected with a transmission or wheels, and the power of the engine 1 is also transmitted to the input end of the generator 2 from the input shaft 4, the first driving gear 8, the first driven gear 9 and the solid shaft 6 in sequence;

the motor power gear mode: the first clutch 12 is disconnected, the driving motor 3 outputs power, and the power of the driving motor 3 is transmitted to the output shaft 7 through the hollow shaft 5, the second driving gear 10 and the second driven gear 11 in sequence;

the motor charging gear mode: the first clutch 12 is disconnected, and the power of the engine 1 can be transmitted to the input end of the generator 2 only from the input shaft 4, the first driving gear 8, the first driven gear 9 and the solid shaft 6 in sequence.

In another embodiment, a second clutch 13 is arranged between the input shaft 4 and the output shaft 7, a driving friction disc of the second clutch 13 is fixedly connected with the first driving gear 8, a driven friction disc is fixedly connected with the second driven gear 11, and the power of the engine 1 can be directly transmitted to the output shaft 7 through the second clutch 13, so as to directly realize the connection and disconnection of the power of the engine 1;

when the first clutch 12 is combined and the second clutch 13 is combined, the engine 1 outputs power, the driving motor 3 does not output power, the power of the engine 1 is directly transmitted to the output shaft 7 through the input shaft 4, the first driving gear 8, the second clutch 13 and the second driven gear 11 in sequence, and the driving motor 3 and the generator 2 generate power by using the power of the engine 1 to provide electric energy for the storage battery;

when the first clutch 12 is disconnected and the second clutch 13 is connected, the engine 1 and the driving motor 3 can both output power to drive the vehicle to run, and the generator 2 generates power by using the power of the engine 1.

The utility model can combine the power output by the engine and the driving motor to be transmitted to the output shaft to be output to the transmission or wheels, and can convert mechanical energy into electric energy by using the generator and the driving motor, thereby not only improving the fuel economy of the motor vehicle in various ways, but also realizing various power flow matching schemes through the iteration of a multi-stage transmission route, and meeting the richer economical and dynamic requirements of various vehicles such as passenger vehicles, trucks, pickup trucks and the like.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and modifications of the present invention by those skilled in the art are within the scope of the present invention without departing from the spirit of the present invention.

Claims

1. A hybrid power transmission device of a motor vehicle, comprising an engine (1), a generator (2), a drive motor (3), characterized in that: an input shaft (4) is fixedly connected with an engine (1), the driving motor (3) is fixedly connected with a hollow shaft (5), the generator (2) is fixedly connected with a solid shaft (6), the hollow shaft (5) is sleeved on the solid shaft (6) in an empty mode to form a concentric shaft, and an output shaft (7) is parallel to the solid shaft (6) and is positioned on the same axial line with the input shaft (4);

a first driving gear (8) is circumferentially fixed on the input shaft (4), a first driven gear (9) is circumferentially fixed on the solid shaft (6), and the first driven gear (9) is meshed with the first driving gear (8);

a second driving gear (10) is circumferentially fixed on the hollow shaft (5), a second driven gear (11) is circumferentially fixed on the output shaft (7), and the second driven gear (11) is meshed with the second driving gear (10);

a first clutch (12) is arranged between the hollow shaft (5) and the first driven gear (9), a first friction disc of the first clutch (12) is fixedly connected with the first driven gear (9), and a second friction disc is circumferentially fixed with the hollow shaft (5);

the input shaft (4), the hollow shaft (5), the solid shaft (6) and the output shaft (7) are supported on the box body through bearings respectively.

2. A hybrid transmission for a motor vehicle according to claim 1, wherein: and a second clutch (13) is arranged between the input shaft (4) and the output shaft (7), a driving friction disc of the second clutch (13) is fixedly connected with the first driving gear (8), and a driven friction disc is fixedly connected with the second driven gear (11).