CN102358161A - Power driving system architecture in hybrid vehicle and control method for power driving system architecture - Google Patents
Power driving system architecture in hybrid vehicle and control method for power driving system architecture Download PDFInfo
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Abstract
The invention relates to a power driving system architecture in a hybrid vehicle. A battery module in a motor power driving sub system is connected with a first driving motor/generator through a first motor control module; the first driving motor/generator is connected with a power coupling transmission device; an engine control module in an engine power driving sub system is connected with an engine; the generator is connected with the battery module through a second motor control module; and the engine is connected with the power coupling transmission device through the generator. The invention also relates to a method for realizing power driving control in the hybrid vehicle based on the system architecture. By adopting the power driving system architecture in the hybrid vehicle and the control method for the power driving system architecture, the system architecture is more rational, the vehicle has higher power performance, and driving is higher in flexibility and completeness; furthermore, the vehicle saves energy, is environment-friendly and has high safety coefficient; and the power driving system architecture is stable and reliable in working performance and wider in applicability range, and lays a firm foundation for popularization and application of a hybrid technology.
Description
Technical field
The present invention relates to vehicle power drive controlling field, particularly motor vehicle driven by mixed power Drive Control Technique field specifically is meant power-driven system framework and control method thereof in a kind of motor vehicle driven by mixed power.
Background technology
In the modern society, along with the continuous development of auto-industry, various energy-saving and cost-reducing technology are more and more widely used, and are exactly the oil electric mixed dynamic technology as outstanding and the most practical technology in the energy-saving and cost-reducing technology.
Press at present the power transmission system structure difference, hybrid vehicle can be divided into three types in Series Hybrid-Power Vehicle, parallel hybrid electric and series parallel hybrid power automobile.Wherein, the tandem motor is unique propulsion source, and energy conversion efficiency is low; The influence that the variation of parallel driving engine receives vehicle working condition is big, so emission performance is relatively poor; Traditional series parallel type can make full use of tandem and parallel advantage; Guarantee that driving engine and electrical motor are operated in the economic zone basically; Though improve the economy of vehicle greatly, its structure is complicated with control, arranges with control flexibly for car load all to acquire a certain degree of difficulty.
At present most simultaneously elec. vehicle is not considered the preheating of power brick, so that in the extreme cold area, temperature is lower than the battery discharge temperature, and battery can't effectively be discharged, and vehicle can't use.
Above variety of problems has brought very big obstacle all for hybrid power technology applying on vehicle.
Summary of the invention
The objective of the invention is to have overcome above-mentioned shortcoming of the prior art, provide a kind of can effectively improve car load power system efficient, rational in infrastructure simple, take into account dynamic property and economy, energy-saving and cost-reducing, improve travel safety, stable and reliable working performance, make things convenient for that car load is arranged, Applicable scope power-driven system framework and the control method thereof in the motor vehicle driven by mixed power comparatively widely.
In order to realize above-mentioned purpose, power-driven system framework and control method thereof in the motor vehicle driven by mixed power of the present invention are following:
Power-driven system framework in this motor vehicle driven by mixed power; Comprise motor power driver sub-system, engine power driver sub-system and power coupling transmission device; Its principal feature is; Described motor power driver sub-system comprises battery module, first motor control module, first drive motor/electrical generator; Described battery module is connected with described first drive motor/electrical generator through first motor control module; And described first drive motor/electrical generator is in transmission connection with described power coupling transmission device mutually, and described engine power driver sub-system comprises engine control module, driving engine, second drive motor/electrical generator, second motor control module, and described engine control module is connected with described driving engine; Described electrical generator is connected with described battery module through described second motor control module, and described driving engine is in transmission connection with described power coupling transmission device through described electrical generator mutually.
Also comprise first Automatic Transmission and transmission shaft in the motor power driver sub-system in the power-driven system framework in this motor vehicle driven by mixed power; Described first drive motor/electrical generator is in transmission connection with described power coupling transmission device through described first Automatic Transmission, transmission shaft successively mutually; Also comprise the self-acting clutch and second Automatic Transmission in the described engine power driver sub-system, described driving engine is in transmission connection with described power coupling transmission device through described self-acting clutch, electrical generator, second Automatic Transmission successively mutually.
Also comprise the car load control module in the power-driven system framework in this motor vehicle driven by mixed power, described car load control module all is connected with engine control module with described battery module, first motor control module, second motor control module respectively through the CAN bus system.
Car load control module in the power-driven system framework in this motor vehicle driven by mixed power is an entire car controller.
Battery module in the power-driven system framework in this motor vehicle driven by mixed power comprises electrokinetic cell bag and battery management unit; Described battery management unit is connected with second motor control module with described first motor control module respectively through described electrokinetic cell bag, and described battery management unit is connected with described car load control module through described CAN bus system.
First motor control module in the power-driven system framework in this motor vehicle driven by mixed power is an electric machine controller.
Second motor control module in the power-driven system framework in this motor vehicle driven by mixed power is an electric machine controller.
Engine control module in the power-driven system framework in this motor vehicle driven by mixed power is an engine controller.
First drive motor/electrical generator and first drive motor/electrical generator in the power-driven system framework in this motor vehicle driven by mixed power are permagnetic synchronous motor.
Power coupling transmission device in the power-driven system framework in this motor vehicle driven by mixed power is the dual input drive axle.
Should realize the method for the power drive control in the motor vehicle driven by mixed power based on above-mentioned system architecture, its principal feature is that described method may further comprise the steps:
(1) described battery module continues to detect and obtain current battery electric quantity;
(2) judge the high threshold of electric weight of current battery electric quantity and systemic presupposition and the relation between the electric weight lowest threshold;
(3) if current battery electric quantity greater than the high threshold of described electric weight, then power-driven system gets into electric-only mode, carries out the independent power driven processing of tail-off and drive motor;
(4) if current battery electric quantity less than the electric weight lowest threshold, then power-driven system gets into series model, carries out engine power generation and drive motor power driven processing;
(5) if current battery electric quantity between high threshold of described electric weight and electric weight lowest threshold, is then further judged the relation between the speed of a motor vehicle threshold value of current vehicle speed and systemic presupposition;
(6) if current vehicle speed is lower than described speed of a motor vehicle threshold value, then power-driven system gets into series model, carries out engine power generation and drive motor power driven and handles;
(7) if current vehicle speed is higher than described speed of a motor vehicle threshold value, then power-driven system gets into the series-parallel connection pattern, carries out pure engine power and drives processing.
Tail-off and the independent power driven of drive motor in the method for the power drive control in this realization motor vehicle driven by mixed power are handled, and may further comprise the steps:
(11) described driving engine is in closed condition under the control of engine control module;
(12) described first drive motor/electrical generator gets into the motor-driven mode of operation under the control of first motor control module;
(13) whether the accelerator open degree size of real-time judge vehicle greater than the accelerator open degree threshold value of systemic presupposition, and time length surpasses the time length threshold value of systemic presupposition;
(14) if then described second drive motor/electrical generator gets into the motor-driven mode of operation under the control of second motor control module.
Further comprising the steps of in the step (12) in the method for the power drive control in this realization motor vehicle driven by mixed power:
(121) described first Automatic Transmission places D Drive, and described second Automatic Transmission places neutral gear;
(122) described self-acting clutch is in closure state.
Further comprising the steps of in the step (14) in the method for the power drive control in this realization motor vehicle driven by mixed power:
(141) described first Automatic Transmission and second Automatic Transmission all place D Drive;
(142) described self-acting clutch places released state.
Engine power generation and drive motor power driven in the method for the power drive control in this realization motor vehicle driven by mixed power are handled, and may further comprise the steps:
(21) described driving engine is in running order under the control of engine control module;
(22) described first drive motor/electrical generator gets into the motor-driven mode of operation under the control of first motor control module;
(23) described second drive motor/electrical generator gets into the generating mode of operation under the control of second motor control module; And this second drive motor/electrical generator generates electricity under the driving of driving engine; Be described first drive motor/generator powered, and be described charging battery module;
(24) whether the accelerator open degree size of real-time judge vehicle greater than the accelerator open degree threshold value of systemic presupposition, and time length surpasses the time length threshold value of systemic presupposition;
(25) if then described second drive motor/electrical generator gets into the motor-driven mode of operation under the control of second motor control module, and described driving engine is in idling mode under the control of engine control module.
Further comprising the steps of in the step (22) in the method for the power drive control in this realization motor vehicle driven by mixed power:
(221) described first Automatic Transmission places D Drive, and described second Automatic Transmission places neutral gear;
(222) described self-acting clutch is in closure state.
Further comprising the steps of in the step (25) in the method for the power drive control in this realization motor vehicle driven by mixed power:
(251) described first Automatic Transmission and second Automatic Transmission all place D Drive;
(252) described self-acting clutch places released state.
Pure engine power in the method for the power drive control in this realization motor vehicle driven by mixed power drives to be handled, and may further comprise the steps:
(31) described driving engine is in running order under the control of engine control module, and directly carries out the vehicle power driving;
(32) described first drive motor/electrical generator gets into the generating mode of operation under the control of first motor control module;
(33) described second drive motor/electrical generator gets into the generating mode of operation under the control of second motor control module, and this second drive motor/electrical generator generates electricity under the driving of driving engine, is described charging battery module;
(34) whether the accelerator open degree size of real-time judge vehicle greater than the accelerator open degree threshold value of systemic presupposition, and time length surpasses the time length threshold value of systemic presupposition;
(35) if, then described second drive motor/electrical generator entering under the control of second motor control module idling conditions that do not generate electricity.
Further comprising the steps of in the step (31) in the method for the power drive control in this realization motor vehicle driven by mixed power:
(311) described first Automatic Transmission places neutral gear, and described second Automatic Transmission places the shelves that advance at utmost speed;
(312) described self-acting clutch is in closure state.
Also comprise the braking energy feedback processing in the method for the power drive control in this realization motor vehicle driven by mixed power, may further comprise the steps:
(41) detect the action that whether exists brake pedal to be operated;
(42) if then described first drive motor/electrical generator gets into the generating mode of operation under the control of first motor control module, carry out the braking energy feedback generating, and be described charging battery module;
(43) judge whether described second drive motor/electrical generator is in the motor-driven mode of operation;
(44) if then described second drive motor/electrical generator gets into the generating mode of operation under the control of second motor control module, carry out the braking energy feedback generating, and be described charging battery module.
Also comprise the battery thermal pretreatment in the method for the power drive control in this realization motor vehicle driven by mixed power, may further comprise the steps:
(51) whether described battery module detection battery temperature is lower than 0 ℃;
(52) if then described driving engine is in running order under the control of engine control module;
(53) described engine starting water heating system is that described battery module carries out preheating.
Also comprise car load warm braw supply processing in the method for the power drive control in this realization motor vehicle driven by mixed power, may further comprise the steps:
(61) detect whether there is the operation of opening warm braw;
(62) if then described driving engine is in running order under the control of engine control module;
(63) described engine starting water heating system is a car load supply warm braw.
Adopted power-driven system framework and control method thereof in the motor vehicle driven by mixed power of this invention, owing to wherein adopted the mode of dual input bridge, thus make that hybrid power passenger car power system framework is more reasonable; Work opportunity and mode of operation to Automatic Transmission and self-acting clutch are rationally controlled, and make the better collaborative work of each power unit, and confirm each power unit mode of operation according to vehicle real work operating mode; Make vehicle that tractive performance preferably arranged; And the two-way power path can work alone separately, and separately the ability of individual drive vehicle arranged all, and driving has bigger alerting ability and integraty; Simultaneously can performance be definite separately works opportunity separately according to vehicle actual condition and drive motor and driving engine; So that motor and driving engine all work in its efficient district, thereby make vehicle that the better economic performance arranged, reach purpose of energy saving; Can also guarantee the co-ordination state of power system under each pattern, guarantee the driving safety of vehicle; Moreover, the present invention prevents its super-charge super-discharge to the timely charging and the feedback braking mode control of battery, has effectively protected battery; Simultaneously can in time give the power brick preheating, enlarge the vehicle operation area, and utilized the engine water heating system warm braw to be provided to car load; Save the vehicle energy, thereby improved safety factor of travel, stable and reliable working performance; Make things convenient for car load to arrange that Applicable scope is comparatively extensive, for constantly applying of hybrid power technology established solid foundation.
Description of drawings
Fig. 1 is the power-driven system configuration diagram in the motor vehicle driven by mixed power of the present invention.
Fig. 2 is the overall workflow scheme drawing of the power drive control method in the motor vehicle driven by mixed power of the present invention.
The specific embodiment
In order more to be expressly understood technology contents of the present invention, the special following examples of lifting specify.
See also shown in Figure 1; Power-driven system framework in this motor vehicle driven by mixed power; Comprise motor power driver sub-system, engine power driver sub-system and power coupling transmission device; Wherein said motor power driver sub-system comprises battery module, first motor control module, first drive motor/electrical generator; Described battery module is connected with described first drive motor/electrical generator through first motor control module; And described first drive motor/electrical generator is in transmission connection with described power coupling transmission device mutually, and described engine power driver sub-system comprises engine control module, driving engine, second drive motor/electrical generator, second motor control module, and described engine control module is connected with described driving engine; Described electrical generator is connected with described battery module through described second motor control module, and described driving engine is in transmission connection with described power coupling transmission device through described electrical generator mutually.
Wherein, Described battery module comprises electrokinetic cell bag and battery management unit; Described battery management unit is connected with second motor control module with described first motor control module respectively through described electrokinetic cell bag; And described battery management unit is connected with described car load control module through described CAN bus system; Described first motor control module is an electric machine controller, and described second motor control module is an electric machine controller, and described engine control module is an engine controller; The described first drive motor/electrical generator and first drive motor/electrical generator is permagnetic synchronous motor, and described power coupling transmission device is the dual input drive axle.
Simultaneously; Also comprise first Automatic Transmission and transmission shaft in the described motor power driver sub-system; Described first drive motor/electrical generator is in transmission connection with described power coupling transmission device through described first Automatic Transmission, transmission shaft successively mutually; Also comprise the self-acting clutch and second Automatic Transmission in the described engine power driver sub-system, described driving engine is in transmission connection with described power coupling transmission device through described self-acting clutch, electrical generator, second Automatic Transmission successively mutually.
Moreover; Also comprise the car load control module in the power-driven system framework in this motor vehicle driven by mixed power; Described car load control module all is connected with engine control module with described battery module, first motor control module, second motor control module respectively through the CAN bus system, and described car load control module is an entire car controller.
See also shown in Figure 2ly again, should realize the method for the power drive control in the motor vehicle driven by mixed power based on above-mentioned system architecture, its principal feature is that described method may further comprise the steps:
(1) described battery module continues to detect and obtain current battery electric quantity;
(2) judge the high threshold of electric weight of current battery electric quantity and systemic presupposition and the relation between the electric weight lowest threshold;
(3) if current battery electric quantity greater than the high threshold of described electric weight, then power-driven system gets into electric-only mode, carries out the independent power driven processing of tail-off and drive motor, may further comprise the steps:
(a) described driving engine is in closed condition under the control of engine control module;
(b) described first drive motor/electrical generator gets into the motor-driven mode of operation under the control of first motor control module; Wherein further comprising the steps of:
(i) described first Automatic Transmission places D Drive, and described second Automatic Transmission places neutral gear;
(ii) described self-acting clutch is in closure state;
(c) whether the accelerator open degree size of real-time judge vehicle greater than the accelerator open degree threshold value of systemic presupposition, and time length surpasses the time length threshold value of systemic presupposition;
(d) if then described second drive motor/electrical generator gets into the motor-driven mode of operation under the control of second motor control module, wherein further comprising the steps of:
(i) described first Automatic Transmission and second Automatic Transmission all place D Drive;
(ii) described self-acting clutch places released state;
(4) if current battery electric quantity less than the electric weight lowest threshold, then power-driven system gets into series model, carries out engine power generation and drive motor power driven processing, may further comprise the steps:
(a) described driving engine is in running order under the control of engine control module;
(b) described first drive motor/electrical generator gets into the motor-driven mode of operation under the control of first motor control module; Wherein further comprising the steps of:
(i) described first Automatic Transmission places D Drive, and described second Automatic Transmission places neutral gear;
(ii) described self-acting clutch is in closure state;
(c) described second drive motor/electrical generator gets into the generating mode of operation under the control of second motor control module; And this second drive motor/electrical generator generates electricity under the driving of driving engine; Be described first drive motor/generator powered, and be described charging battery module;
(d) whether the accelerator open degree size of real-time judge vehicle greater than the accelerator open degree threshold value of systemic presupposition, and time length surpasses the time length threshold value of systemic presupposition;
(e) if then described second drive motor/electrical generator gets into the motor-driven mode of operation under the control of second motor control module, and described driving engine is in idling mode under the control of engine control module, and is wherein further comprising the steps of:
(i) described first Automatic Transmission and second Automatic Transmission all place D Drive;
(ii) described self-acting clutch places released state;
(5) if current battery electric quantity between high threshold of described electric weight and electric weight lowest threshold, is then further judged the relation between the speed of a motor vehicle threshold value of current vehicle speed and systemic presupposition;
(6) if current vehicle speed is lower than described speed of a motor vehicle threshold value, then power-driven system gets into series model, carries out engine power generation and drive motor power driven and handles, and may further comprise the steps:
(a) described driving engine is in running order under the control of engine control module;
(b) described first drive motor/electrical generator gets into the motor-driven mode of operation under the control of first motor control module; Wherein further comprising the steps of:
(i) described first Automatic Transmission places D Drive, and described second Automatic Transmission places neutral gear;
(ii) described self-acting clutch is in closure state;
(c) described second drive motor/electrical generator gets into the generating mode of operation under the control of second motor control module; And this second drive motor/electrical generator generates electricity under the driving of driving engine; Be described first drive motor/generator powered, and be described charging battery module;
(d) whether the accelerator open degree size of real-time judge vehicle greater than the accelerator open degree threshold alpha of systemic presupposition, and time length surpasses the time length threshold value n second of systemic presupposition;
(e) if then described second drive motor/electrical generator gets into the motor-driven mode of operation under the control of second motor control module, and described driving engine is in idling mode under the control of engine control module, and is wherein further comprising the steps of:
(i) described first Automatic Transmission and second Automatic Transmission all place D Drive;
(ii) described self-acting clutch places released state;
(7) if current vehicle speed is higher than described speed of a motor vehicle threshold value, then power-driven system gets into the series-parallel connection pattern, carries out pure engine power and drives processing, may further comprise the steps:
(a) described driving engine is in running order under the control of engine control module, and directly carries out the vehicle power driving; Wherein further comprising the steps of:
(i) described first Automatic Transmission places neutral gear, and described second Automatic Transmission places the shelves that advance at utmost speed;
(ii) described self-acting clutch is in closure state;
(b) described first drive motor/electrical generator gets into the generating mode of operation under the control of first motor control module;
(c) described second drive motor/electrical generator gets into the generating mode of operation under the control of second motor control module, and this second drive motor/electrical generator generates electricity under the driving of driving engine, is described charging battery module;
(d) whether the accelerator open degree size of real-time judge vehicle greater than the accelerator open degree threshold alpha of systemic presupposition, and time length surpasses the time length threshold value n second of systemic presupposition;
(e) if, then described second drive motor/electrical generator entering under the control of second motor control module idling conditions that do not generate electricity.
Simultaneously, also comprise the braking energy feedback processing in the method for the power drive control in this realization motor vehicle driven by mixed power, may further comprise the steps:
(41) detect the action that whether exists brake pedal to be operated;
(42) if then described first drive motor/electrical generator gets into the generating mode of operation under the control of first motor control module, carry out the braking energy feedback generating, and be described charging battery module;
(43) judge whether described second drive motor/electrical generator is in the motor-driven mode of operation;
(44) if then described second drive motor/electrical generator gets into the generating mode of operation under the control of second motor control module, carry out the braking energy feedback generating, and be described charging battery module.
On the other hand, also comprise the battery thermal pretreatment in the method for the power drive control in this realization motor vehicle driven by mixed power, may further comprise the steps:
(51) whether described battery module detection battery temperature is lower than 0 ℃;
(52) if then described driving engine is in running order under the control of engine control module;
(53) described engine starting water heating system is that described battery module carries out preheating.
Moreover, also comprise car load warm braw supply processing in the method for the power drive control in this realization motor vehicle driven by mixed power, may further comprise the steps:
(61) detect whether there is the operation of opening warm braw;
(62) if then described driving engine is in running order under the control of engine control module;
(63) described engine starting water heating system is a car load supply warm braw.
In the middle of reality is used; Basic thought of the present invention is a car load master layout for ease, improves car load power system efficient simultaneously, and power system is carried out favorably situated architecture design; Dynamic property and the economy advantage of while in order to give full play to hybrid-power bus; Let the mutual co-ordination of each parts such as driving engine, motor, change speed gear box, power-transfer clutch improve the car load driving safety, take into account the function of protection battery simultaneously again, therefore provide a cover scientific and reasonable control policy.
This strategy both can satisfy the tractive performance of vehicle under each operating mode; Actual travel condition and motor, the driving engine of considering city bus again be performance separately; Make each power part be operated in efficient region as far as possible, improve the go purpose of economy of car load thereby reached.And according to what of battery electric quantity in the use, can in time replenish electric weight or forbid feedback, prevent that battery from crossing to put or overcharge, reach the purpose of protecting battery.In time give the power brick preheating, it still can be used in the extreme cold area.
Described motor vehicle driven by mixed power major impetus system forms: driving engine, electrical generator, drive motor, self-acting clutch, Automatic Transmission, dual input back axle.
In the series parallel hybrid power passenger vehicle, 3 power units are arranged, be respectively driving engine, drive motor, electrical generator; Complete vehicle structure is comparatively complicated, and the car load arrangements of components reduces degradation of energy in the power transmission process simultaneously for ease; Adopt the dual input back axle in the power system; With the be placed in two ends of back axle of driving engine and two power units of drive motor, be beneficial to the car load master layout, and power directly passes to back axle and can reduce the transmission of power loss.
Hybrid power passenger car car load power system can be divided two-way output, and two-way can work independently, and is independent of each other, and this two-way takeoff output route is following:
● power path 1: drive motor---Automatic Transmission---transmission shaft---dual input back axle---wheel
● power path 2: driving engine---self-acting clutch---electrical generator---Automatic Transmission---transmission shaft---dual input back axle---wheel
Drive pattern mainly is based on relevant informations formulations such as running conditions of vehicle, battery electric quantity (SOC), speed V, Das Gaspedal aperture in the control policy of this hybrid power passenger car; Key to each parts collaborative work ability control is the effective control to Automatic Transmission, self-acting clutch.
Be the electric control automatic gear shifting case in the above two-way power path, can better control its gearshift opportunity, more effective control power unit works in the economical and efficient zone.
Separation to self-acting clutch is rationally controlled with combining opportunity, makes engine starting, gearshift more smooth-going, quick, can be better controlled opportunity driving engine participation work simultaneously, reduces power waste.
For hybrid vehicle; Under the prerequisite that guarantees dynamic property; Crucial control factor is that the power output of driving engine guarantees in its economy zone all the time; Make full use of the characteristic of motor low-speed big, when vehicle is in low speed, startup, idling operation, utilize motor-driven to avoid the high oil consumption district of driving engine.
Under special operation condition, when the drive motor under power, generator drive is the vehicular drive power-assisted, and it is that Das Gaspedal aperture α continues n second that electrical generator adds the Rule of judgment on opportunity that drives.
Make full use of permanent power of motor high speed and the higher characteristic of whole speed adjustable range internal efficiency, when battery electric quantity was higher, omnidistance motor-driven reached the purpose of energy-conserving and environment-protective.
When battery electric quantity was lower than certain value, driving engine and electrical generator all worked in its economic zone, were battery charge, prevented that battery from crossing to put; When battery electric quantity is higher than certain value, forbid feedback braking, prevent over-charging of battery.
As detect battery temperature and cross low or vehicle has the equal start the engine work of warm braw demand, give the power brick preheating or warm braw is provided by its water heating system to car load.
Below be example with 11 meters hybrid-power bus, be described in and use above-mentioned power system framework and control method on this bus, its specific embodiment and the impact of performance are described below:
See also shown in Figure 1ly, according to the restriction of each system layout characteristic of real vehicle and car load arrangement space, whole power system framework is built by the aforementioned two-way power path way of output.
In the car load mode, judge according to battery electric quantity, the speed of a motor vehicle in the control method, the vehicular drive pattern is divided into: pure motor drive mode, tandem drive pattern, series-parallel connection drive pattern and feedback braking mode of operation.
According to driving engine, electrical generator, each power unit performance of drive motor, analyze its drive pattern according to the required work operating mode of vehicle:
(1) electric-only mode generally all is the drive motor independent drive, when needs are climbed Da Po (greater than β), according to accelerator open degree size and time length (the lasting n of accelerator open degree α second), judges that electrical generator adds the opportunity that drives.
(2) series model, routine are that driving engine runs on the economic zone, and generator operation is generated electricity in efficient district, drive motor drives; Under special operation condition (such as climbing Da Po), electrical generator transfers driving to by generating, is vehicle booster, engine idle.
(3) series-parallel connection pattern, pure engine drive, engine operation is higher than requirement section power and is used for generating electricity in its economic zone, judges according to accelerator open degree size and time length (the lasting n of accelerator open degree α second) whether electrical generator generates electricity.
(4) feedback braking pattern is carried out braking energy and is reclaimed when stepping on brake pedal, utilize preceding motor (electrical generator) feeding braking energy back to the vehicle driving action of braking, confirms according to the battery electric quantity and the brake pedal degree of depth feedback amount how much.
For the power system of equipment Automatic Transmission and self-acting clutch, also very crucial to the control of change speed gear box and power-transfer clutch.Drive pattern is judged and each unit status sees also shown in Figure 2.
Simultaneously, when detecting battery temperature and be lower than 0 ℃ or car load the warm braw demand is arranged, its water heating system of engine starting provides warm braw for power brick preheating or car load.
This hybrid-power bus is used this power system framework and control method makes tractive performance, economic performance and other correlated performances of car load all reach the design objective requirement.
Adopted power-driven system framework and control method thereof in the above-mentioned motor vehicle driven by mixed power, owing to wherein adopted the mode of dual input bridge, thus make that hybrid power passenger car power system framework is more reasonable; Work opportunity and mode of operation to Automatic Transmission and self-acting clutch are rationally controlled, and make the better collaborative work of each power unit, and confirm each power unit mode of operation according to vehicle real work operating mode; Make vehicle that tractive performance preferably arranged; And the two-way power path can work alone separately, and separately the ability of individual drive vehicle arranged all, and driving has bigger alerting ability and integraty; Simultaneously can performance be definite separately works opportunity separately according to vehicle actual condition and drive motor and driving engine; So that motor and driving engine all work in its efficient district, thereby make vehicle that the better economic performance arranged, reach purpose of energy saving; Can also guarantee the co-ordination state of power system under each pattern, guarantee the driving safety of vehicle; Moreover, the present invention prevents its super-charge super-discharge to the timely charging and the feedback braking mode control of battery, has effectively protected battery; Simultaneously can in time give the power brick preheating, enlarge the vehicle operation area, and utilized the engine water heating system warm braw to be provided to car load; Save the vehicle energy, thereby improved safety factor of travel, stable and reliable working performance; Make things convenient for car load to arrange that Applicable scope is comparatively extensive, for constantly applying of hybrid power technology established solid foundation.
In this specification sheets, the present invention is described with reference to its certain embodiments.But, still can make various modifications and conversion obviously and not deviate from the spirit and scope of the present invention.Therefore, specification sheets and accompanying drawing are regarded in an illustrative, rather than a restrictive.
Claims (21)
1. the power-driven system framework in the motor vehicle driven by mixed power; Comprise motor power driver sub-system, engine power driver sub-system and power coupling transmission device; It is characterized in that; Described motor power driver sub-system comprises battery module, first motor control module, first drive motor/electrical generator; Described battery module is connected with described first drive motor/electrical generator through first motor control module; And described first drive motor/electrical generator is in transmission connection with described power coupling transmission device mutually, and described engine power driver sub-system comprises engine control module, driving engine, second drive motor/electrical generator, second motor control module, and described engine control module is connected with described driving engine; Described electrical generator is connected with described battery module through described second motor control module, and described driving engine is in transmission connection with described power coupling transmission device through described electrical generator mutually.
2. the power-driven system framework in the motor vehicle driven by mixed power according to claim 1; It is characterized in that; Also comprise first Automatic Transmission and transmission shaft in the described motor power driver sub-system; Described first drive motor/electrical generator is in transmission connection with described power coupling transmission device through described first Automatic Transmission, transmission shaft successively mutually; Also comprise the self-acting clutch and second Automatic Transmission in the described engine power driver sub-system, described driving engine is in transmission connection with described power coupling transmission device through described self-acting clutch, electrical generator, second Automatic Transmission successively mutually.
3. the power-driven system framework in the motor vehicle driven by mixed power according to claim 1; It is characterized in that; Also comprise the car load control module in the described system architecture, described car load control module all is connected with engine control module with described battery module, first motor control module, second motor control module respectively through the CAN bus system.
4. the power-driven system framework in the motor vehicle driven by mixed power according to claim 3 is characterized in that, described car load control module is an entire car controller.
5. according to the power-driven system framework in each described motor vehicle driven by mixed power in the claim 1 to 4; It is characterized in that; Described battery module comprises electrokinetic cell bag and battery management unit; Described battery management unit is connected with second motor control module with described first motor control module respectively through described electrokinetic cell bag, and described battery management unit is connected with described car load control module through described CAN bus system.
6. according to the power-driven system framework in each described motor vehicle driven by mixed power in the claim 1 to 4, it is characterized in that described first motor control module is an electric machine controller.
7. according to the power-driven system framework in each described motor vehicle driven by mixed power in the claim 1 to 4, it is characterized in that described second motor control module is an electric machine controller.
8. according to the power-driven system framework in each described motor vehicle driven by mixed power in the claim 1 to 4, it is characterized in that described engine control module is an engine controller.
9. according to the power-driven system framework in each described motor vehicle driven by mixed power in the claim 1 to 4, it is characterized in that the described first drive motor/electrical generator and first drive motor/electrical generator is permagnetic synchronous motor.
10. according to the power-driven system framework in each described motor vehicle driven by mixed power in the claim 1 to 4, it is characterized in that described power coupling transmission device is the dual input drive axle.
10, a kind of method based on the power drive control in the described system architecture realization of claim 1 motor vehicle driven by mixed power is characterized in that described method may further comprise the steps:
(1) described battery module continues to detect and obtain current battery electric quantity;
(2) judge the high threshold of electric weight of current battery electric quantity and systemic presupposition and the relation between the electric weight lowest threshold;
(3) if current battery electric quantity greater than the high threshold of described electric weight, then power-driven system gets into electric-only mode, carries out the independent power driven processing of tail-off and drive motor;
(4) if current battery electric quantity less than the electric weight lowest threshold, then power-driven system gets into series model, carries out engine power generation and drive motor power driven processing;
(5) if current battery electric quantity between high threshold of described electric weight and electric weight lowest threshold, is then further judged the relation between the speed of a motor vehicle threshold value of current vehicle speed and systemic presupposition;
(6) if current vehicle speed is lower than described speed of a motor vehicle threshold value, then power-driven system gets into series model, carries out engine power generation and drive motor power driven and handles;
(7) if current vehicle speed is higher than described speed of a motor vehicle threshold value, then power-driven system gets into the series-parallel connection pattern, carries out pure engine power and drives processing.
11. the method for the power drive control in the realization motor vehicle driven by mixed power according to claim 10 is characterized in that, the independent power driven of described tail-off and drive motor is handled, and may further comprise the steps:
(11) described driving engine is in closed condition under the control of engine control module;
(12) described first drive motor/electrical generator gets into the motor-driven mode of operation under the control of first motor control module;
(13) whether the accelerator open degree size of real-time judge vehicle greater than the accelerator open degree threshold value of systemic presupposition, and time length surpasses the time length threshold value of systemic presupposition;
(14) if then described second drive motor/electrical generator gets into the motor-driven mode of operation under the control of second motor control module.
12. the method for the power drive control in the realization motor vehicle driven by mixed power according to claim 11; It is characterized in that; Also comprise first Automatic Transmission and transmission shaft in the described motor power driver sub-system; Described first drive motor/electrical generator is in transmission connection with described power coupling transmission device through described first Automatic Transmission, transmission shaft successively mutually; Also comprise the self-acting clutch and second Automatic Transmission in the described engine power driver sub-system; Described driving engine is in transmission connection with described power coupling transmission device through described self-acting clutch, electrical generator, second Automatic Transmission successively mutually, and is further comprising the steps of in the described step (12):
(121) described first Automatic Transmission places D Drive, and described second Automatic Transmission places neutral gear;
(122) described self-acting clutch is in closure state.
13. the method for the power drive control in the realization motor vehicle driven by mixed power according to claim 12 is characterized in that, and is further comprising the steps of in the described step (14):
(141) described first Automatic Transmission and second Automatic Transmission all place D Drive;
(142) described self-acting clutch places released state.
14. the method for the power drive control in the realization motor vehicle driven by mixed power according to claim 10 is characterized in that, described engine power generation and drive motor power driven are handled, and may further comprise the steps:
(21) described driving engine is in running order under the control of engine control module;
(22) described first drive motor/electrical generator gets into the motor-driven mode of operation under the control of first motor control module;
(23) described second drive motor/electrical generator gets into the generating mode of operation under the control of second motor control module; And this second drive motor/electrical generator generates electricity under the driving of driving engine; Be described first drive motor/generator powered, and be described charging battery module;
(24) whether the accelerator open degree size of real-time judge vehicle greater than the accelerator open degree threshold value of systemic presupposition, and time length surpasses the time length threshold value of systemic presupposition;
(25) if then described second drive motor/electrical generator gets into the motor-driven mode of operation under the control of second motor control module, and described driving engine is in idling mode under the control of engine control module.
15. the method for the power drive control in the realization motor vehicle driven by mixed power according to claim 14; It is characterized in that; Also comprise first Automatic Transmission and transmission shaft in the described motor power driver sub-system; Described first drive motor/electrical generator is in transmission connection with described power coupling transmission device through described first Automatic Transmission, transmission shaft successively mutually; Also comprise the self-acting clutch and second Automatic Transmission in the described engine power driver sub-system; Described driving engine is in transmission connection with described power coupling transmission device through described self-acting clutch, electrical generator, second Automatic Transmission successively mutually, and is further comprising the steps of in the described step (22):
(221) described first Automatic Transmission places D Drive, and described second Automatic Transmission places neutral gear;
(222) described self-acting clutch is in closure state.
16. the method for the power drive control in the realization motor vehicle driven by mixed power according to claim 15 is characterized in that, and is further comprising the steps of in the described step (25):
(251) described first Automatic Transmission and second Automatic Transmission all place D Drive;
(252) described self-acting clutch places released state.
17. the method for the power drive control in the realization motor vehicle driven by mixed power according to claim 10 is characterized in that, described pure engine power drives to be handled, and may further comprise the steps:
(31) described driving engine is in running order under the control of engine control module, and directly carries out the vehicle power driving;
(32) described first drive motor/electrical generator gets into the generating mode of operation under the control of first motor control module;
(33) described second drive motor/electrical generator gets into the generating mode of operation under the control of second motor control module, and this second drive motor/electrical generator generates electricity under the driving of driving engine, is described charging battery module;
(34) whether the accelerator open degree size of real-time judge vehicle greater than the accelerator open degree threshold value of systemic presupposition, and time length surpasses the time length threshold value of systemic presupposition;
(35) if, then described second drive motor/electrical generator entering under the control of second motor control module idling conditions that do not generate electricity.
18. the method for the power drive control in the realization motor vehicle driven by mixed power according to claim 17; It is characterized in that; Also comprise first Automatic Transmission and transmission shaft in the described motor power driver sub-system; Described first drive motor/electrical generator is in transmission connection with described power coupling transmission device through described first Automatic Transmission, transmission shaft successively mutually; Also comprise the self-acting clutch and second Automatic Transmission in the described engine power driver sub-system; Described driving engine is in transmission connection with described power coupling transmission device through described self-acting clutch, electrical generator, second Automatic Transmission successively mutually, and is further comprising the steps of in the described step (31):
(311) described first Automatic Transmission places neutral gear, and described second Automatic Transmission places the shelves that advance at utmost speed;
(312) described self-acting clutch is in closure state.
19. the method according to the power drive control in each described realization motor vehicle driven by mixed power in the claim 10 to 18 is characterized in that, also comprises the braking energy feedback processing in the described method, may further comprise the steps:
(41) detect the action that whether exists brake pedal to be operated;
(42) if then described first drive motor/electrical generator gets into the generating mode of operation under the control of first motor control module, carry out the braking energy feedback generating, and be described charging battery module;
(43) judge whether described second drive motor/electrical generator is in the motor-driven mode of operation;
(44) if then described second drive motor/electrical generator gets into the generating mode of operation under the control of second motor control module, carry out the braking energy feedback generating, and be described charging battery module.
20. the method according to the power drive control in each described realization motor vehicle driven by mixed power in the claim 10 to 18 is characterized in that, also comprises in the described method may further comprise the steps the battery thermal pretreatment:
(51) whether described battery module detection battery temperature is lower than 0 ℃;
(52) if then described driving engine is in running order under the control of engine control module;
(53) described engine starting water heating system is that described battery module carries out preheating.
21. the method according to the power drive control in each described realization motor vehicle driven by mixed power in the claim 10 to 18 is characterized in that, also comprises car load warm braw supply processing in the described method, may further comprise the steps:
(61) detect whether there is the operation of opening warm braw;
(62) if then described driving engine is in running order under the control of engine control module;
(63) described engine starting water heating system is a car load supply warm braw.
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