A kind of automobile three clutch hybrid drive and control methods thereof
Technical field
The invention belongs to automobile technical field, relate to a kind of hybrid electric drive system, particularly a kind of automobile three clutch hybrid drive and control methods thereof.
Background technology
Along with environmental protection consciousness improves day by day, the worsening shortages of non-renewable resources such as oil, numerous automakers also more and more pay close attention to the research and development of energy-saving and emission-reduction vehicle, and all kinds of hybrid vehicles emerge gradually.Hybrid vehicle can farthest satisfy the needs of energy environment protection, therefore has more market-oriented prospect.The hybrid power automobile power assembly configuration that is developed at present has series, parallel and three kinds of patterns of series-parallel connection.The series connection pattern is simple in structure, control easily but inefficiency, cost are high.The parallel connection pattern generally is used for slight A level or the following manned vehicle of A level that mixes; For the B level and more than the B level riding vehicle often adopt the series-parallel connection pattern, and series-parallel connection pattern oil-saving effect is best, but its complex structure, the control difficulty.
To the problems referred to above; Existing Chinese patent document discloses a kind of novel double-motor and multi-clutch hybrid power system for vehicle [application number: CN200910053260.4]; This invention provides a kind of novel automobile double-motor two clutch hybrid power systems, and it comprises the stop and start of main drive motor, integrated starter-generator, main shaft, master clutch, first order speed reduction gearing, driving engine and the said two clutch hybrid power system takeoff outputs of first clutch realization control.This invention also provides a kind of novel automobile Bielectric machine three-clutch hybrid power system; On the basis of above-mentioned double-motor two clutch hybrid power systems; Said Bielectric machine three-clutch hybrid power system also comprises second clutch, and said three-clutch hybrid power system is realized the stopping of the said three clutch hybrid power system takeoff outputs of control, startup and gear switch through controlling said first clutch and second clutch.Such scheme has improved energy utilization efficiency to a certain extent, but still have complex structure, control easy inadequately, problem such as car load power is not high.
Summary of the invention
The objective of the invention is to have the problems referred to above to existing technology; A kind of automobile three clutch hybrid drive and control methods thereof have been proposed; This automobile three clutch hybrid drives and control method thereof can be through the couplings of three self-acting clutch control power; Effectively increase car load power and energy savings, and compact to integral structure layout.
The object of the invention can be realized through following technical proposal: a kind of automobile three clutch hybrid drives; On chassis, be provided with left and right sides semiaxis and the diff that is connected left and right sides semiaxis; Comprise driving engine, generator motor, electrical motor and storage battery; Generator motor all is connected with storage battery with electrical motor; Driving engine and generator motor connect through the first class reducer structure and between driving engine and first class reducer structure, first clutch are set, and driving engine is connected through first two reduction gear with diff and in first two reduction gear, second clutch is set; Connect through second two reduction gear between electrical motor and the diff and in second two reduction gear, three-clutch is set.
These automobile three clutch hybrid drives; Closed at first clutch and three-clutch, when second clutch separates; Driving engine drives the generator motor rotation through the first class reducer structure and charges a battery; Storage battery is given electrical motor with the power delivery that stores, and electrical motor links to each other with diff through second two reduction gear and drives wheel, and car load is driven by series model; When first clutch, second clutch and three-clutch all are closure state; Driving engine links to each other with diff through first two reduction gear and drives wheel and electrical motor rotates through the electric energy drive wheels that storage battery provides, and car load is driven by paralleling model; , above-mentioned two kinds of patterns realize the series-parallel connection mode activated when moving together; With first clutch separate with second clutch, three-clutch is closed, car load is driven by electric-only mode, electrical motor goes through the electric energy powered vehicle that storage battery provides.
In above-mentioned automobile three clutch hybrid drives; Described first class reducer structure comprises engine shaft and the electricity generation and electromotion arbor that is arranged on the chassis; This engine shaft is connected through one group of transmission gear with the electricity generation and electromotion arbor; Above-mentioned driving engine is connected with engine shaft through first clutch, and above-mentioned generator motor is connected with the electricity generation and electromotion arbor.When engine starting and first clutch are closure state; Thereby the engine drives engine shaft rotates and drives the transmission gear rotation that connects engine shaft and electricity generation and electromotion arbor, makes the generator motor generating thereby this transmission gear then drives the rotation of electricity generation and electromotion arbor.
In above-mentioned automobile three clutch hybrid drives, the transmission gear in the said first class reducer structure comprises the driving wheel that is arranged on the engine shaft and is arranged at the follower on the electricity generation and electromotion arbor that the diameter of driving wheel is greater than the diameter of follower.Thereby the diameter of this driving wheel can be accelerated the generator motor rotating speed greater than the diameter of follower and improve generating efficiency.
In above-mentioned automobile three clutch hybrid drives; Described first two reduction gear comprises first transmission shaft; Connect through above-mentioned second clutch between the flower wheel that connects through one group of transmission gear between the above-mentioned engine shaft and first transmission shaft and should the group transmission gear and first transmission shaft, connect through one group of transmission gear between first transmission shaft and the diff.When second clutch is closure state; Thereby the rotation of engine shaft can drive the transmission gear rotation that connects the engine shaft and first transmission shaft and drive the rotation of first transmission shaft, rotates thereby the rotation of first transmission shaft then drives the one group of transmission gear rotation drive wheels that connects first transmission shaft and diff.
In above-mentioned automobile three clutch hybrid drives; The described second two-stage reduction gear mechanism comprises the motor reel and second transmission shaft; Above-mentioned electrical motor is connected on the motor reel; Connect through one group of transmission gear between the motor reel and second transmission shaft, connect through one group of transmission gear between second transmission shaft and the diff and the flower wheel that should the group transmission gear and second transmission shaft between connect through above-mentioned three-clutch.At three-clutch is closure state, and one group of transmission gear rotation drives the rotation of second transmission shaft thereby motor reel rotates drive, thereby second transmission shaft is then through driving the transmission gear rotation drive wheels rotation of connection second transmission shaft and diff.
In above-mentioned automobile three clutch hybrid drives, this device also comprises a casing, and above-mentioned electricity generation and electromotion arbor, engine shaft, first transmission shaft, left and right sides semiaxis, second transmission shaft and motor reel laterally arrange in the casing successively.
In above-mentioned automobile three clutch hybrid drives, described generator motor, electrical motor and driving engine are positioned at outside the casing, and driving engine is positioned at a side of casing separately, and generator motor and electrical motor are positioned at the opposite side of casing.Described generator motor and electrical motor be for being arranged side by side outside casing, makes the complete machine compact in design.
In above-mentioned automobile three clutch hybrid drives; This device also comprise automobile controller and respectively with automobile controller bonded assembly car speed sensor, acceleration pick-up, tachogen and battery management unit; Described battery management unit is used to control the charge capacity with storage battery that discharges and recharges of generator motor, and detection current vehicle speed that described automobile controller is used for acceleration pick-up and car speed sensor are transported and current acceleration calculate required power and export above-mentioned first clutch, second clutch and the three-clutch of control signal control and carry out clutch.Controller is through calculating the power of current vehicle speed and current acceleration gained; And through analysis and judgement; Carry out the driving of clutch realization different mode thereby export control signal control first clutch, second clutch and three-clutch, controller control battery management unit is in the charge capacity abundance of storage battery; Battery management unit may command storage battery is given generator motor with power delivery; The generator motor drive wheels is rotated, in the charge capacity deficiency of storage battery, can make the generator motor charging store electric weight.
A kind of control method of automobile three clutch hybrid drives is characterized in that, may further comprise the steps:
When the charge capacity that A, battery management unit detect storage battery was higher than the lower limit of setting in the automobile controller, controller calculated current power demand through car speed sensor and acceleration pick-up; During less than the electrical motor rating horsepower, controller control first clutch, second clutch are in released state, control three-clutch and are in closure state, separately by direct motor drive at current power demand; At current power demand during greater than the electrical motor rating horsepower; Controller control first clutch, second clutch and three-clutch are in closure state; Driving engine drives the generator motor generating again and is stored in the storage battery when drive wheels is rotated, and storage battery rotates wheel driving motor to electrical motor power delivery; Form the series-parallel connection mode activated; Perhaps engine driven wheel rotates but does not drive the generator motor generating, and electrical motor rotates through the electric weight drive wheels that storage battery provides simultaneously, forms paralleling model and drives;
When the charge capacity that B, battery management unit detect storage battery is lower than the lower limit of setting in the automobile controller; Controller compares through the GES of car speed sensor collection and the tach signal of tachogen collection; When GES can not reach the engine working area of setting to the requirement of engine rotational speed signal; Car load is driven by series model, and this moment, engine operation was in optimum oil consumption zone generating; When GES reached the engine working area of setting to the requirement of engine rotational speed signal, car load was by the series-parallel connection mode activated, and this moment, engine operation was in optimum oil consumption zone; When GES exceeded engine optimum oil consumption zone to the requirement of engine rotational speed signal, car load was directly driven by driving engine.
In the control method of above-mentioned automobile three clutch hybrid drives; This control method also comprises the braking energy recycling step: under pure electronic operating mode, if storage battery can be accepted charging, then step on brake pedal; Drive generator motor and work in generating state, reclaim braking energy; When the driving engine direct drive, if only regain Das Gaspedal, power-transfer clutch breaks off, and engine power replenishes storage battery by the generator motor generating, to utilize the idling operation recuperated energy; Step on brake pedal simultaneously if regain Das Gaspedal, generator motor works in generating state, reclaims braking energy; When series model drives, step on brake pedal, generator motor switches to power generation mode by electric model, reclaims braking energy.
Compared with prior art, this automobile three clutch hybrid drives and control method thereof have the following advantages:
1, the present invention realizes the different driving pattern of car load through controlling three self-acting clutchs, effectively increases car load power and energy savings.
2, the electricity generation and electromotion function works in electronic and the two kinds of patterns of generating electricity among the present invention, and can under the adjusting of controller, realize the rotating switching, to satisfy the demand that the various different modes of car load drive.
3, generator motor and electrical motor are arranged side by side outside casing among the present invention, make complete vehicle structure compact.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is a functional block diagram of the present invention.
Among the figure, 1, driving engine; 2, generator motor; 3, electrical motor; 4, storage battery; 5, casing; 6, electricity generation and electromotion arbor; 7, engine shaft; 8, first transmission shaft; 9, left and right sides semiaxis; 10, second transmission shaft; 11, motor reel; 12, diff; 13, first clutch; 14, second clutch; 15, three-clutch; 16, wheel; 17, controller; 18, car speed sensor; 19, acceleration pick-up; 20, tachogen; 21, battery management unit.
The specific embodiment
Below be specific embodiment of the present invention and combine accompanying drawing, technical scheme of the present invention is done further to describe, but the present invention is not limited to these embodiment.
As shown in Figure 1; This automobile three clutch hybrid drives; Comprise driving engine 1, generator motor 2, electrical motor 3, storage battery 4 and casing 5, generator motor 2, electrical motor 3 and driving engine 1 are positioned at outside the casing 5, and driving engine 1 is positioned at a side of casing 5 separately; Generator motor 2 and electrical motor 3 all are connected and are positioned at the opposite side of casing 5 with storage battery 4; Be arranged with electricity generation and electromotion arbor 6, engine shaft 7, first transmission shaft 8, left and right sides semiaxis 9, second transmission shaft 10 and motor reel 11 in the casing 5 successively in parallel, its left and right sides semiaxis 9 is connected on the chassis through diff 12, and driving engine 1 is connected with engine shaft 7 through first clutch 13; Generator motor 2 is connected with electricity generation and electromotion arbor 6; The follower that is provided with on the driving wheel that is provided with on the engine shaft 7 and the electricity generation and electromotion arbor 6 is formed one group of transmission gear, this group transmission gear and electricity generation and electromotion arbor 6, engine shaft 7 composition first class reducer structures, and driving engine 1 is connected through the first class reducer structure with generator motor 2; Electrical motor 3 is connected with the motor reel that is provided with driving wheel 11; The follower that is provided with on this driving wheel and second transmission shaft 10 is formed one group of transmission gear; Also be provided with on second transmission shaft 10 through three-clutch 15 bonded assembly driving wheels; This driving wheel with form one group of transmission gear through diff 12 bonded assembly followers 6, these two groups of transmission gears are formed second two reduction gear with second transmission shaft 10 and motor reel 11, electrical motor 3 passes through second two reduction gear and links to each other with diff 12; The driving wheel that passes through to be provided with near first clutch 13 on second clutch 14 bonded assembly flower wheels and the engine shaft 7 that is provided with on first transmission shaft 8 is formed one group of transmission gear; The driving wheel that is provided with on first transmission shaft 8 with form one group of transmission gear through diff 12 bonded assembly followers; These the two groups of transmission gears and first transmission shaft 8 are formed first two reduction gear, and driving engine 1 links to each other with diff 12 through first two reduction gear; Generator motor 2 links to each other with diff 12 with first two reduction gear through the first class reducer structure.
As shown in Figure 2; This automobile three clutch hybrid drives also comprise automobile controller 17 and respectively with automobile controller 17 bonded assembly car speed sensors 18, acceleration pick-up 19, tachogen 20 and battery management unit 21; This battery management unit 21 is used to control the charge capacity with storage battery 4 that discharges and recharges of generator motor 2; The detection current vehicle speed that automobile controller 17 is used for that acceleration pick-up 19 and car speed sensor 18 are transported calculates required power with current acceleration and is satisfying under the condition of different operating modes through analysis and judgement; The clutch of controller 17 control first clutch 13, second clutch 14 and three-clutch 15 is implemented in the driving of different mode.
The control method of this automobile three clutch hybrid drives; Concrete steps are following: when the charge capacity that A, battery management unit 21 detect storage battery 4 was higher than the lower limit of setting in the automobile controller 17, controller 17 calculated current power demand through car speed sensor 18 and acceleration pick-up 19; At current power demand during less than electrical motor 3 rating horsepowers; Controller 17 control firsts clutch 13, second clutch 14 are in released state; Driving engine 1 is not worked; Control three-clutch 15 and be in closure state, rotate thereby electrical motor 3 driving motor axles 11 rotate the one group of transmission gear that drives the connection motor reel 11 and second transmission shaft 10, this group transmission gear then drives second transmission shaft 10 and rotates; Thereby 10 of second transmission shafts rotate drive wheels 16 through the one group of gear that drives connection second transmission shaft 10 and diff 12 and rotate electrical motor 3 independent drive vehicle '; At current power demand during greater than electrical motor 3 rating horsepowers; Controller 17 control firsts clutch 13, second clutch 14 and three-clutch 15 are in closure state; Thereby driving engine 1 drives the one group of transmission gear rotation that connects the engine shaft 7 and first transmission shaft 8 and drives 8 rotations of first transmission shaft; Thereby the rotation of first transmission shaft 8 then drives the one group of transmission gear that connects first transmission shaft 8 and diff 12 and rotates drive wheels 16 rotations, and electrical motor 3 rotates through the electric energy drive wheels 16 that storage battery 4 provides simultaneously, and car load is driven by paralleling model; Perhaps driving engine 1 is when drive wheels 16 is rotated; Drive generator motor 2 generatings again and store electric weight in storage battery 4, storage battery 4 rotates electrical motor 3 drive wheels 16 for electrical motor 3 power delivery, forms the series-parallel connection mode activated; When the charge capacity that B, battery management unit 21 detect storage battery 4 is lower than the lower limit of setting in the automobile controller 17; The tach signal that controller 17 is gathered through the GES and the tachogen 20 of car speed sensor 18 collections compares; When GES can not reach driving engine 1 work area of setting to the requirement of driving engine 1 tach signal; Firsts clutch 13 controlled by controller 17 and three-clutch 15 is in closure state, second clutch 14 is in clutch state; Thereby driving engine 1 starting drives engine shaft 7 and rotates the transmission gear rotation that drives in the first class reducer structure; Thereby the diameter of driving wheel can be accelerated generator motor 2 rotating speeds greater than the diameter of follower and improve generating efficiency in this group transmission gear; Also store electrical energy is in storage battery 4 thereby this transmission gear drives 2 generatings of electricity generation and electromotion arbor 6 rotation drive generator motors, and to electrical motor 3, electrical motor 3 passes through the second two reduction gear drive wheels 16 and rotates storage battery 4 with the power delivery that stores; Car load is driven by series model, and this moment, driving engine 1 worked in optimum oil consumption zone generating; When GES reached driving engine 1 work area of setting to the requirement of driving engine 1 tach signal, car load was by the series-parallel connection mode activated, and this moment, driving engine 1 worked in optimum oil consumption zone; When GES exceeded driving engine 1 optimum oil consumption zone to the requirement of driving engine 1 tach signal, car load was directly driven by driving engine 1.C, braking energy reclaim: under pure electronic operating mode, if storage battery 4 can be accepted charging, then step on brake pedal, drive generator motor 2 and work in generating state, reclaim braking energy; When driving engine 1 direct drive, if only regain Das Gaspedal, power-transfer clutch breaks off, and driving engine 1 power replenishes storage battery 4 by generator motor 2 generatings, to utilize the idling operation recuperated energy; Step on brake pedal simultaneously if regain Das Gaspedal, drive generator motor 2 and work in generating state, reclaim braking energy; When the tandem drive pattern, step on brake pedal, drive generator motor 2 and switch to power generation mode by electric model, reclaim braking energy.
Specific embodiment described herein only is that spirit of the present invention is made casehistory.Person of ordinary skill in the field of the present invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although this paper has used terms such as driving engine 1, generator motor 2, electrical motor 3, storage battery 4, casing 5, electricity generation and electromotion arbor 6, engine shaft 7, first transmission shaft 8, left and right sides semiaxis 9, second transmission shaft 10, motor reel 11, diff 12, first clutch 13, second clutch 14, three-clutch 15, wheel 16, controller 17, car speed sensor 18, acceleration pick-up 19, tachogen 20, battery management unit 21 morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present invention more easily; It all is contrary with spirit of the present invention being construed to any additional restriction to them.