CN107134882A - A kind of motor combination for hybrid electric vehicle - Google Patents

Abstract

The invention discloses a motor combination for a hybrid electric vehicle, which belongs to the field of hybrid electric vehicles, and comprises a cylindrical motor housing (1), in which radial motors (2) are sequentially arranged along a rotating shaft , clutch (3) and axial motor (4). The present invention has the following advantages: 1. The radial motor, clutch and axial motor are integrated, which reduces the volume and quality of the system, saves the space of the car, reduces the workload of car manufacturing and assembly, and saves the manufacturing cost ; 2. Increase the working mode for users to choose, which improves the fuel economy of the hybrid vehicle on the highway; 3. When the electrical system fails, the hybrid vehicle can still be used, avoiding the cost of towing and waiting for the user time, enhance its reliability and save maintenance cost.

Description

A motor combination for a hybrid vehicle

technical field

The invention belongs to the field of hybrid electric vehicles, and in particular relates to a motor used for hybrid electric vehicles.

Background technique

With the improvement of people's living standards, automobiles have become the main means of transportation for people to travel, which consume a large amount of oil resources and cause great pollution to the atmosphere. At the same time, the pressure of energy and environment has been pushing the new technology of automobiles towards the direction of low fuel consumption and low emission. It is in this context that electric vehicles have developed by leaps and bounds. However, due to the limitations of energy storage technologies such as batteries, the mileage of electric vehicles cannot be compared with that of fuel vehicles. At the same time, due to the high manufacturing cost, it is still difficult to market compared with traditional fuel vehicles. Hybrid vehicles, which use an internal combustion engine and an electric motor, are an alternative solution. The advantage of hybrid electric vehicles is that the mileage of pure electric vehicles is greatly extended, and gasoline or diesel can be added quickly. Compared with fuel vehicles, the fuel consumption and emissions of hybrid electric vehicles are much smaller under the same mileage conditions. many.

Series hybrid electric vehicle is a kind of hybrid vehicle, which means that the mechanical energy output by the engine is first converted into electrical energy through the generator, and part of the converted electrical energy is used to charge the battery, and the other part is driven by the motor and transmission. Its drive system is composed of three major components, the engine, the generator and the drive motor, in series. The working principle is: the engine-generator set generates power in a balanced manner, the electric energy is supplied to the drive motor and the battery pack, and the drive motor generates power to drive the vehicle. Its advantages are: there is no mechanical connection between the engine and the driving motor, the engine working condition can avoid being affected by road resistance, the engine can be fixed at the highest efficiency and low emission state, the vehicle is completely driven by the electric motor, and braking can be easily realized Energy recovery; the parts manufacturing technology used is relatively mature, and the existing mature vehicle parts and vehicle production system can be fully utilized, which greatly reduces the difficulty and cost of manufacturing, and the electrical control is simple and reliable.

The disadvantages of series hybrid electric vehicles are: there are many power components of hybrid vehicles, the workload of assembly layout is large, and the quality of the whole vehicle is relatively large. Vibration, noise, and electromagnetic interference have a serious impact on the work of the electrical system. When the electrical system fails, the car will not be able to continue driving. The user can only wait for the trailer to be repaired, which is a waste of time and increases the related costs of the car company. It also reduces the driving experience.

When the vehicle is running on the highway, the fuel utilization rate of the engine and the vehicle efficiency of the ordinary fuel vehicle are at a relatively high level. The series hybrid electric vehicle has undergone two conversions of energy, which inevitably brings a part of energy loss, and the transmission efficiency is relatively high. The mechanical transmission system is low, and the hybrid vehicle has little advantage in terms of overall efficiency compared with the normal vehicle in this case. Although the use of high-performance materials and advanced control strategies can improve the energy transfer efficiency of the vehicle, it is still smaller than the mechanical transmission system and pushes up the manufacturing cost of the motor.

Contents of the invention

Aiming at the problems existing in the driving system of the existing serial hybrid electric vehicle, the technical problem to be solved by the present invention is to provide a motor combination for the hybrid electric vehicle, which has the functions of power generation and electric drive, and has a transmission clutch It can reduce the workload of power components, assembly layout and vehicle quality, and when the electrical system fails, it can transmit the power of the engine and drive the vehicle; driving on the highway can obtain the same high efficiency as ordinary fuel vehicles.

The technical problem to be solved by the present invention is achieved through such a technical scheme, which includes a cylindrical motor casing, and in the motor casing, a radial motor, a clutch and an axial motor are sequentially arranged along the rotating shaft;

The radial motor includes radial stator windings and radial rotor poles. The radial stator windings are distributed radially on the circular inner surface of the motor housing centered on the output shaft of the engine. The output shaft of the engine is connected to the clutch drive. In the center of the disc, radial rotor poles are arranged on the side of the clutch driving disc corresponding to the radial stator winding;

The clutch includes a clutch driving disc and a clutch driven disc, there is an engagement or separation gap between the clutch driving disc and the clutch driven disc, and a clutch driven shaft coaxial with the output shaft of the engine is installed in the center of the clutch driven disc;

The axial motor includes axial stator windings and radial rotor poles, the axial stator windings are installed on the cylindrical surface in the motor housing, the radial rotor poles are combined with the clutch driven shaft, and are integrated with the axial stator windings relative settings.

The present invention has the following advantages:

1. Integrate the radial motor, clutch and axial motor, which reduces the volume and quality of the system, saves the space of the car, reduces the workload of car manufacturing and assembly, and saves manufacturing costs;

2. Added working modes that can be selected by the user, improving the fuel economy of the hybrid vehicle on the highway;

3. When the electrical system breaks down, the hybrid vehicle can still be used, which avoids tow truck fees and user waiting time, enhances its reliability, and saves maintenance costs.

Description of drawings

The accompanying drawings of the present invention are as follows:

Fig. 1 is the structural diagram of the drive system applied to hybrid vehicles by the present invention;

Fig. 2 is a distribution structure diagram of a radial stator winding of the present invention;

Fig. 3 is a distribution structure diagram of a radial rotor magnetic pole of the present invention;

Fig. 4 is a structure diagram of a clutch of the present invention.

In the figure: 1. Motor housing; 2. Radial motor; 21. Radial stator winding; 22. Radial rotor pole; 3. Clutch; 31. Clutch driving disc; 32. Clutch driven disc; 33. Clutch slave 4. Axial motor; 41. Axial stator winding; 42. Radial rotor poles; 5. Motor; 51. Motor output shaft; 6. External battery.

detailed description

Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

As shown in Figure 1, the present invention includes a cylindrical motor housing 1, in which a radial motor 2, a clutch 3 and an axial motor 4 are arranged in sequence along the rotating shaft;

The radial motor 2 includes a radial stator winding 21 and a radial rotor pole 22. As shown in FIG. On the inner side of the shape, the engine output shaft 51 is connected to the center of the clutch driving disc 31, as shown in Figure 3, the radial rotor magnetic pole 22 is arranged on the side of the clutch driving disc 31 corresponding to the radial stator winding 21;

As shown in Figure 4, the clutch 3 includes a clutch driving disc 31 and a clutch driven disc 32, there is a gap for engagement or separation between the clutch driving disc 31 and the clutch driven disc 32, and the center of the clutch driven disc 32 is equipped with a The clutch driven shaft 33 coaxial with the engine output shaft 51;

The axial motor 4 includes an axial stator winding 41 and a radial rotor pole 42, the axial stator winding 41 is installed on a cylindrical surface in the motor housing 1, and the radial rotor pole 42 is integrated with the clutch driven shaft 33 , and set opposite to the axial stator winding 41.

As shown in Figure 1, the drive system of hybrid electric vehicle is equipped with the present invention, and radial motor 2 and axial motor 4 have generator and electric drive function concurrently, and radial motor 2 is connected with engine 5 by engine output shaft 51; The motor 4 is connected with the main speed reducer through the clutch driven shaft 33 . The radial stator winding 21 of the radial motor 2 and the axial stator winding 41 of the axial motor 4 are connected to the poles of the external battery 6 via respective power converters VSI 1 and VSI 2 . The external battery 6 is equipped with a charging interface, and the user can connect the battery to the mains for charging when the car is not in use.

The course of work of the present invention is that the clutch 3 normal state is disengagement state:

1. When the vehicle is running, the axial motor 4 is in the electric state to drive the vehicle to run;

2. When the battery power is insufficient, the radial motor 2 is in the electric state to assist the engine to start; after the engine is started, the radial motor 2 is in the power generation state, and supplies power to the external battery 6 and the axial motor 4 through the power converter;

3. The car brakes, the axial motor 4 is in the power generation state, completes the regenerative braking, and charges the external battery 6;

4. When the clutch 3 is engaged, the engine 5 directly drives the hybrid vehicle:

When the car is driving on the highway, at this time, because there is no frequent start and stop in urban road conditions, the engine works in a state of high fuel efficiency, and the axial motor rotor is combined with the radial motor rotor through the clutch, and the engine 5 directly When the vehicle is driven, the radial motor 2 is out of work, and the axial motor 4 is flexibly switched between electric and power generation states, so that the generator always works in the best working condition and improves the efficiency of the hybrid vehicle.

When the electrical system fails, the axial motor rotor is combined with the radial motor rotor through the clutch 3, so that the hybrid vehicle will not lose driving ability, and the user can drive to the maintenance company for maintenance, which enhances the reliability of the hybrid vehicle.

Claims (1)

1. a kind of motor combination for hybrid electric vehicle, it is characterized in that：Include the motor casing of cylinder（1）, in motor casing, Radial motor is arranged in sequence with along rotating shaft（2）, clutch（3）And axial direction electric machine（4）；

The radial motor（2）Including radial stator winding（21）With radial rotor magnetic pole（22）, radial stator winding（21）Edge Radially it is laid in engine output shaft（51）Centered on motor casing（1）On circular inner side surface, engine output shaft （51）It is connected to clutch driving plate（31）Center, in clutch driving plate（31）It is upper to correspond to radial stator winding（21）Side It is configured with radial rotor magnetic pole（22）；

The clutch（3）Including clutch driving plate（31）And clutch driven plate（32）, clutch driving plate（31）With from Clutch clutch plate（32）Between have engagement or separation gap, clutch driven plate（32）Center is equipped with and engine output shaft （51）Coaxial clutch driven shaft（33）；

The axial direction electric machine（4）Including axial stator winding（41）With radial rotor magnetic pole（42）, axial stator winding（41）Peace Mounted in motor casing（1）On the interior face of cylinder, radial rotor magnetic pole（42）With clutch driven shaft（33）It is combined into one, and and axle To stator winding（41）It is oppositely arranged.