The hybrid power assembly drive system
Technical field
The utility model relates to a kind of automobile driving system, especially relates to a kind of parallel type hybrid power assembly drive system.
Background technology
Hybrid electric drive system combines the advantage of combustion engine and motor driven systems, and the needs that meet energy-saving and environmental protection and build a harmonious society have vast market prospect, good social benefit and economic benefit.At present, mixed power automobile driving system mainly is divided into series, parallel and three kinds of patterns of series-parallel connection.Coordination difficulty of matching between existing series-parallel connection pattern power system structure more complicated, power system is big, combustion engine and electric machine control difficulty, control policy complexity, parts are more easily causes the curb mass that system failure rate increases, the weight of power system has caused car load to increase; Though and series model is simple in structure, mode also can be easy, owing to be difficult to satisfy the needs of vehicle dynamic quality, so paralleling model is considered to a kind of power system structure of tool market outlook all the time as the motor of unique propulsion source.
Patent Office of the People's Republic of China discloses a CN1778587A document on May 31st, 2006, name is called mixed power automobile driving system, comprise driving engine, dynamotor, first clutch, second clutch, input planet row, output planetary row, first drg, second drg, the mouth of engine crankshaft and first, the active member of second clutch connects, the drive element of first clutch and first, the input component of second drive mechanism connects, first, the output of second transmission device is connected with transmission shaft, the drive element of second clutch is connected with the middleware of first transmission device, the integral structure more complicated, transmission process can lose more energy, thereby can not get power output completely.
Patent Office of the People's Republic of China was on March 14th, 2007, announced a CN1304213C patent, name is called parallel connection type hybrid power system, mainly comprise engine drive device and electric powerplant, engine drive device has at least two driving engines to make up, driving engine is engaged or separation, electric powerplant adopts and takes excitatory DC machine, and hybrid power system is optimized control according to driving condition by the ECU control unit.But control of the power system of this structure or more complicated, difficult coordination when total success ratio is exported, single-piece weight is bigger.
Summary of the invention
The utility model has solved complex structure in the prior art, the control difficulty, the power output coordinating is poor, the shortcoming that overall weight is big, a kind of all power-transmission system of more complicated of structure, technology that do not need to use are provided, simplify the power system structure, reduce the control difficulty, improved dynamic property, increased reliability and reduce the hybrid power assembly drive system of car load power system cost.
The technical scheme that its technical matters that solves the utility model adopts is: a kind of hybrid power assembly drive system, comprise electrical motor, driving engine, change speed gear box and drive axle, change speed gear box links to each other with drive axle, it is characterized in that electrical motor and driving engine are coaxial is connected, between electrical motor and the driving engine electro-pneumatic clutch is set, electrical motor and change speed gear box join, and electrical motor is joined by controller and propulsion source.Electro-pneumatic clutch is used for the control motor and unites to work simultaneously or separate with driving engine and work independently, thereby adapting to drive system works under different operating modes, form pure electronic mode of operation, direct connection mode of operation, coaxial paralleling model, controller receives control signal and the control motor cooperates engine operation, integral structure is simple, parts are less, reliability improves, and the systematic comparison compactness, be easy to control, electrical motor and driving engine engage, take into account vehicle low speed, high-speed region, the effect of energy-saving and emission-reduction is apparent in view.
As preferably, the housing of electrical motor and the housing of driving engine are connected as a body, and the bent axle of driving engine connects the flywheel of electro-pneumatic clutch, and electro-pneumatic clutch is connected to the input shaft of electrical motor.The housing of electrical motor and the housing of driving engine fuse, and can improve the stability of whole drive system, the coaxial requirement in the time of guaranteeing transmission.
As preferably, the output shaft of electrical motor joins by castellated shaft and described change speed gear box, and the output shaft of described change speed gear box connects an end of transmission shaft by the male flange of change speed gear box end, and the other end of transmission shaft connects described drive axle.
As preferably, electro-pneumatic clutch is connected with the ecp driving lever of control usefulness, and the end of ecp driving lever connects cylinder.Cylinder links to each other with the air pump of vehicle, in the action of operator's compartment inner control cylinder, thereby controls joint that the ecp driving lever realizes electro-pneumatic clutch and separates.
As preferably, controller comprises electric machine controller and entire car controller, electric machine controller directly links to each other by cable with electrical motor, entire car controller by cable connection to electric machine controller, propulsion source adopts electrokinetic cell, electrokinetic cell and entire car controller join by cable, and entire car controller is connected with the external type charging connector of promptly inserting.
The beneficial effects of the utility model are: power system is relatively simple for structure, the coordination coupling between combustion engine and motor is convenient, control policy is simple and easy, parts are few, good reliability, efficient height; Driving engine/motor independent drive is arranged the mode of operation of paralleling model and driving engine/motor drives jointly, feedback braking etc., can satisfy the needs of each driving cycle, and tractive performance is superior to series model far away.
Description of drawings
Fig. 1 is a kind of control layout circle of the present utility model;
Fig. 2 is a kind of structural representation of the utility model;
Among the figure: 1, drive axle, 2, transmission shaft, 3, change speed gear box, 4, castellated shaft, 5, electrical motor, 6, electro-pneumatic clutch, 7, flywheel, 8, driving engine, 9, electric machine controller, 10, cable, 11, promptly insert the type charging connector, 12, entire car controller, 13, electrokinetic cell, 14, male flange, 15, cylinder, 16, ecp driving lever, 17, the bent axle terminal pad.
The specific embodiment
Below by specific embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment: a kind of hybrid power assembly drive system (referring to accompanying drawing 1 accompanying drawing 2), comprise electrical motor 5, driving engine 8, change speed gear box 3 and drive axle 1, the end of the output shaft of change speed gear box is a male flange 14, male flange links to each other with an end of transmission shaft 2, the other end of transmission shaft links to each other with drive axle, the housing of electrical motor and driving engine is connected as a body, be provided with electro-pneumatic clutch 6 between electrical motor and the driving engine, driving engine is connected with electrical motor is coaxial, the end of the bent axle of driving engine is a bent axle terminal pad 17, the bent axle terminal pad links to each other with flywheel 7 on the electro-pneumatic clutch 6, electro-pneumatic clutch is connected to the input shaft of electrical motor, the output shaft of electrical motor joins by castellated shaft 4 and change speed gear box, electrical motor is connected to electric machine controller 9 by cable 10, electric machine controller links to each other with entire car controller 12 by cable, entire car controller links to each other with electrokinetic cell 13 by cable, entire car controller also is connected with promptly inserts type charging connector 11, electro-pneumatic clutch is connected with the ecp driving lever 16 of control usefulness, and the end of ecp driving lever connects cylinder 15.
Introduce the specific embodiment of the present utility model below:
A hybrid power low floor city bus, front axle is a steeraxle, adopts electric power steering; Back axle is a drive axle, adopt the linkage power-driven system, system is by a driving engine 8, electrical motor 5, entire car controller 12, electric machine controller 9, electrokinetic cell 13, a cover electro-pneumatic clutch 6, change speed gear box 3, and their compositions such as coupling between any two.This system's connection mode is: driving engine 8 is connected with electrical motor 5 by electro-pneumatic clutch 6, and the output shaft of electrical motor is connected with change speed gear box 3 by castellated shaft 4, and the output shaft of change speed gear box links to each other with rear-end gear reduction by transmission shaft.The power battery charging mode is the instant-plugging fast charge.
The principle of work of the power-driven system of city bus under different operating modes:
1. start or the low cruise operating mode:
This operating mode electropneumatic disengaging of clutch, this power system works in electric-only mode, at this moment, driving engine is not worked, provide electric power energy by electric machine controller to electric motor drive system by electrokinetic cell, electrical motor is as the unique propulsion source of running car, if speed of a motor vehicle increase in demand, the power-transfer clutch pressing enters the economic pace operating mode that travels at the uniform speed.
Economic pace at the uniform velocity, the high-speed cruising operating mode:
Electropneumatic power-transfer clutch combination under this operating mode, driving engine are by electro-pneumatic clutch and electrical motor direct connection, and this moment, electrical motor was not worked, and provided power separately by driving engine, made driving engine be in efficient district all the time, satisfied the requirement of car load dynamic property.
3. climbing operating mode:
This operating mode car load demand torque is big, electropneumatic power-transfer clutch combination this moment, driving engine is by electro-pneumatic clutch and electrical motor direct connection outputting power, electrokinetic cell provides electric power energy by electric machine controller to electric motor drive system simultaneously, electrical motor provides power by transmission shaft to back axle, power-driven system works in coaxial paralleling model, satisfies the requirement of car load dynamic property.
4. damped condition:
This operating mode electrical motor transfers the electrical generator mode of operation to, and by electric machine controller and entire car controller to the electrokinetic cell feedback electric energy.
5. idling operation
Driving engine quits work, and meets the needs of energy-saving and emission-reduction, restarts automobile and is finished by electrical motor, enters the startup operating mode.
6. charging operating mode
By promptly inserting the fast charge that the type charging modes is realized electrokinetic cell.
Above-described embodiment is a kind of preferred version of the present utility model, is not the utility model is done any pro forma restriction, also has other variant and remodeling under the prerequisite that does not exceed the technical scheme that claim puts down in writing.