CN102358161B - 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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- CN102358161B CN102358161B CN201110211063.8A CN201110211063A CN102358161B CN 102358161 B CN102358161 B CN 102358161B CN 201110211063 A CN201110211063 A CN 201110211063A CN 102358161 B CN102358161 B CN 102358161B
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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 and drive control field, particularly motor vehicle driven by mixed power Drive Control Technique field, specifically refers to power-driven system framework and control method thereof in a kind of motor vehicle driven by mixed power.
Background technology
In modern society, along with the development of auto-industry, various energy conservations are more and more widely used, and are exactly oil electric mixed dynamic technology as technology outstanding and the most practical in energy conservation.
At present press power transmission system structure difference, hybrid vehicle can be divided into Series Hybrid-Power Vehicle, parallel hybrid electric and Series-Parallel HEV three classes.Wherein, tandem motor is unique propulsion source, and energy conversion efficiency is low; The impact that the variation of parallel driving engine is subject to vehicle working condition is large, therefore emission performance is poor; Traditional series parallel type can make full use of tandem and parallel advantage, guarantee that driving engine and electrical motor are operated in economic zone substantially, although greatly improve the economy of vehicle, its structure and control are complicated, all acquire a certain degree of difficulty for arrangement and control flexibly.
At present most elec. vehicle is not considered the preheating of power brick simultaneously, so that in extreme cold area, temperature, lower than battery discharge temperature, cannot effectively discharge battery, and vehicle cannot use.
Above variety of problems, has brought very large obstacle all to Technology of Hybrid Electric Vehicle applying on vehicle.
Summary of the invention
The object 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 efficiency, rational in infrastructure simple, take into account dynamic property and economy, energy-saving and cost-reducing, improve travel safety, stable and reliable working performance, facilitate arrangement, Applicable scope power-driven system framework and the control method thereof in motor vehicle driven by mixed power comparatively widely.
In order to realize above-mentioned object, power-driven system framework and control method thereof in motor vehicle driven by mixed power of the present invention are as follows:
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, the first motor control module, the first drive motor/electrical generator, described battery module is connected with described the first drive motor/electrical generator by the first motor control module, and described the first drive motor/electrical generator is in transmission connection mutually with described power coupling transmission device, described engine power driver sub-system comprises engine control module, driving engine, the second drive motor/electrical generator, the second motor control module, described engine control module is connected with described driving engine, described electrical generator is connected with described battery module by the second described motor control module, and described driving engine is in transmission connection mutually by described electrical generator and described power coupling transmission device.
In motor power driver sub-system in power-driven system framework in this motor vehicle driven by mixed power, also comprise the first Automatic Transmission and transmission shaft, described the first drive motor/electrical generator is in transmission connection with described power coupling transmission device mutually by the first described Automatic Transmission, transmission shaft successively, in described engine power driver sub-system, also comprise self-acting clutch and the second Automatic Transmission, described driving engine is in transmission connection with described power coupling transmission device mutually by described self-acting clutch, electrical generator, the second Automatic Transmission successively.
In power-driven system framework in this motor vehicle driven by mixed power, also comprise car load control module, described car load control module is all connected with engine control module with described battery module, the first motor control module, the second motor control module respectively by CAN bus system.
Car load control module in power-driven system framework in this motor vehicle driven by mixed power is entire car controller.
Battery module in 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 the second motor control module with the first described motor control module respectively by described electrokinetic cell bag, and described battery management unit is connected with described car load control module by described CAN bus system.
The first motor control module in power-driven system framework in this motor vehicle driven by mixed power is electric machine controller.
The second motor control module in power-driven system framework in this motor vehicle driven by mixed power is electric machine controller.
Engine control module in power-driven system framework in this motor vehicle driven by mixed power is engine controller.
The first drive motor/electrical generator and the first drive motor/electrical generator in power-driven system framework in this motor vehicle driven by mixed power are permagnetic synchronous motor.
Power coupling transmission device in power-driven system framework in this motor vehicle driven by mixed power is Double input driving axle.
This system architecture based on above-mentioned realizes the method for the power drive control in motor vehicle driven by mixed power, and its principal feature is that described method comprises the following steps:
(1) described battery module continues to detect and obtain current battery electric quantity;
(2) judge the relation between the high threshold of electric weight and the electric weight lowest threshold of current battery electric quantity and systemic presupposition;
(3) if current battery electric quantity is greater than the high threshold of described electric weight, power-driven system enters electric-only mode, carries out tail-off and drive motor separate power and drives and process;
(4) if current battery electric quantity is less than electric weight lowest threshold, power-driven system enters series model, carries out engine power generation and drive motor power driven processing;
(5) if current battery electric quantity between the high threshold of described electric weight and electric weight lowest threshold, further judges the relation between the speed of a motor vehicle threshold value of current vehicle speed and systemic presupposition;
(6) if current vehicle speed lower than described speed of a motor vehicle threshold value, power-driven system enters series model, carries out engine power generation and drive motor power driven processing;
(7) if current vehicle speed higher than described speed of a motor vehicle threshold value, power-driven system enters series-parallel connection pattern, carries out pure engine power and drives and process.
This is realized tail-off in the method for the power drive control in motor vehicle driven by mixed power and drive motor separate power and drives and process, and comprises the following steps:
(11) described driving engine under the control of engine control module in closed condition;
(12) described the first drive motor/electrical generator enters motor and drives mode of operation under the control of the first motor control module;
(13) whether the accelerator open degree size of real-time judge vehicle is greater than the accelerator open degree threshold value of systemic presupposition, and time length exceedes the time length threshold value of systemic presupposition;
(14) if described the second drive motor/electrical generator enters motor and drives mode of operation under the control of the second motor control module.
This realizes in the step (12) in the method for the power drive control in motor vehicle driven by mixed power further comprising the steps of:
(121) the first described Automatic Transmission is placed in D Drive, and the second described Automatic Transmission is placed in neutral gear;
(122) described self-acting clutch is in closure state.
This realizes in the step (14) in the method for the power drive control in motor vehicle driven by mixed power further comprising the steps of:
(141) described the first Automatic Transmission and the second Automatic Transmission is all placed in D Drive;
(142) described self-acting clutch is placed in released state.
Engine power generation and drive motor power driven processing that this is realized in the method for the power drive control in motor vehicle driven by mixed power, comprise the following steps:
(21) described driving engine is in running order under the control of engine control module;
(22) described the first drive motor/electrical generator enters motor and drives mode of operation under the control of the first motor control module;
(23) described the second drive motor/electrical generator enters generating mode of operation under the control of the second motor control module, and this second drive motor/electrical generator generates electricity under the driving of driving engine, for described the first drive motor/generator powered, and it is described charging battery module;
(24) whether the accelerator open degree size of real-time judge vehicle is greater than the accelerator open degree threshold value of systemic presupposition, and time length exceedes the time length threshold value of systemic presupposition;
(25) if, described the second drive motor/electrical generator enters motor and drives mode of operation under the control of the second motor control module, and described driving engine under the control of engine control module in idling mode.
This realizes in the step (22) in the method for the power drive control in motor vehicle driven by mixed power further comprising the steps of:
(221) the first described Automatic Transmission is placed in D Drive, and the second described Automatic Transmission is placed in neutral gear;
(222) described self-acting clutch is in closure state.
This realizes in the step (25) in the method for the power drive control in motor vehicle driven by mixed power further comprising the steps of:
(251) described the first Automatic Transmission and the second Automatic Transmission is all placed in D Drive;
(252) described self-acting clutch is placed in released state.
This is realized pure engine power in the method for the power drive control in motor vehicle driven by mixed power and drives and process, and comprises the following steps:
(31) described driving engine is in running order under the control of engine control module, and directly carries out vehicle power driving;
(32) described the first drive motor/electrical generator enters generating mode of operation under the control of the first motor control module;
(33) described the second drive motor/electrical generator enters generating mode of operation under the control of the 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 is greater than the accelerator open degree threshold value of systemic presupposition, and time length exceedes the time length threshold value of systemic presupposition;
(35) if described the second drive motor/electrical generator enters the idling conditions that do not generate electricity under the control of the second motor control module.
This realizes in the step (31) in the method for the power drive control in motor vehicle driven by mixed power further comprising the steps of:
(311) the first described Automatic Transmission is placed in neutral gear, and the second described Automatic Transmission is placed in the shelves that advance at utmost speed;
(312) described self-acting clutch is in closure state.
This is realized in the method for the power drive control in motor vehicle driven by mixed power and also comprises braking energy feedback processing, comprises the following steps:
(41) detect the action that whether exists brake pedal to be operated;
(42) if described the first drive motor/electrical generator enters generating mode of operation under the control of the first motor control module, carries out braking energy feedback generating, and is described charging battery module;
(43) whether described the second drive motor/electrical generator of judgement drives mode of operation in motor;
(44) if described the second drive motor/electrical generator enters generating mode of operation under the control of the second motor control module, carries out braking energy feedback generating, and is described charging battery module.
This is realized in the method for the power drive control in motor vehicle driven by mixed power and also comprises battery thermal pretreatment, comprises the following steps:
(51) whether described battery module detects battery temperature lower than 0 ℃;
(52) if 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.
This is realized in the method for the power drive control in motor vehicle driven by mixed power and also comprises car load warm braw supply processing, comprises the following steps:
(61) detect and whether have the operation of opening warm braw;
(62) if described driving engine is in running order under the control of engine control module;
(63) described engine starting water heating system is car load supply warm braw.
Power-driven system framework and control method thereof in the motor vehicle driven by mixed power of this invention are adopted, owing to wherein having adopted the mode of dual input bridge, thereby make hybrid power passenger car power system framework more reasonable, work opportunity and mode of operation to Automatic Transmission and self-acting clutch are rationally controlled, make the better collaborative work of each power unit, and determine each power unit mode of operation according to vehicle real work operating mode, make vehicle have good tractive performance, and two-way power path can work alone separately, and all there is separately the ability of independent drive vehicles, driving has larger alerting ability and integraty, simultaneously can according to vehicle actual condition and drive motor and driving engine separately performance determine and work opportunity separately, so that motor and driving engine all work in its efficient district, thereby make vehicle have good economic performance, reach energy-conservation object, can also guarantee the co-ordination state of power system under each pattern, guarantee the driving safety of vehicle, moreover, timely charging and the feedback braking state control of the present invention to battery, prevents its super-charge super-discharge, effectively protect battery, can give in time power brick preheating, expanded the territory of use of vehicle, and utilized engine water heating system to provide warm braw to car load simultaneously, save vehicle energy, thereby improved safety factor of travel, stable and reliable working performance, facilitates arrangement, Applicable scope is comparatively extensive, for constantly applying of Technology of Hybrid Electric Vehicle established solid foundation.
Accompanying drawing explanation
Fig. 1 is the power-driven system configuration diagram in motor vehicle driven by mixed power of the present invention.
Fig. 2 is the overall workflow schematic diagram of the power drive control method in motor vehicle driven by mixed power of the present invention.
The specific embodiment
In order more clearly to understand technology contents of the present invention, describe in detail especially exemplified by following examples.
Refer to shown in Fig. 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, the first motor control module, the first drive motor/electrical generator, described battery module is connected with described the first drive motor/electrical generator by the first motor control module, and described the first drive motor/electrical generator is in transmission connection mutually with described power coupling transmission device, described engine power driver sub-system comprises engine control module, driving engine, the second drive motor/electrical generator, the second motor control module, described engine control module is connected with described driving engine, described electrical generator is connected with described battery module by the second described motor control module, and described driving engine is in transmission connection mutually by described electrical generator and described power coupling transmission device.
Wherein, described battery module comprises electrokinetic cell bag and battery management unit, described battery management unit is connected with the second motor control module with the first described motor control module respectively by described electrokinetic cell bag, and described battery management unit is connected with described car load control module by described CAN bus system, the first described motor control module is electric machine controller, the second described motor control module is electric machine controller, described engine control module is engine controller, described the first drive motor/electrical generator and the first drive motor/electrical generator are permagnetic synchronous motor, described power coupling transmission device is Double input driving axle.
Simultaneously, in described motor power driver sub-system, also comprise the first Automatic Transmission and transmission shaft, described the first drive motor/electrical generator is in transmission connection with described power coupling transmission device mutually by the first described Automatic Transmission, transmission shaft successively, in described engine power driver sub-system, also comprise self-acting clutch and the second Automatic Transmission, described driving engine is in transmission connection with described power coupling transmission device mutually by described self-acting clutch, electrical generator, the second Automatic Transmission successively.
Moreover, in power-driven system framework in this motor vehicle driven by mixed power, also comprise car load control module, described car load control module is all connected with engine control module with described battery module, the first motor control module, the second motor control module respectively by CAN bus system, and described car load control module is entire car controller.
Refer to shown in Fig. 2, this system architecture based on above-mentioned realizes the method for the power drive control in motor vehicle driven by mixed power again, and its principal feature is that described method comprises the following steps:
(1) described battery module continues to detect and obtain current battery electric quantity;
(2) judge the relation between the high threshold of electric weight and the electric weight lowest threshold of current battery electric quantity and systemic presupposition;
(3) if current battery electric quantity is greater than the high threshold of described electric weight, power-driven system enters electric-only mode, carries out tail-off and drive motor separate power and drives and process, and comprises the following steps:
(a) described driving engine under the control of engine control module in closed condition;
(b) described the first drive motor/electrical generator enters motor and drives mode of operation under the control of the first motor control module; Wherein further comprising the steps of:
(i) the first described Automatic Transmission is placed in D Drive, and the second described Automatic Transmission is placed in neutral gear;
(ii) described self-acting clutch is in closure state;
(c) whether the accelerator open degree size of real-time judge vehicle is greater than the accelerator open degree threshold value of systemic presupposition, and time length exceedes the time length threshold value of systemic presupposition;
(d) if described the second drive motor/electrical generator enters motor and drives mode of operation under the control of the second motor control module, wherein further comprising the steps of:
(i) described the first Automatic Transmission and the second Automatic Transmission is all placed in D Drive;
(ii) described self-acting clutch is placed in released state;
(4) if current battery electric quantity is less than electric weight lowest threshold, power-driven system enters series model, carries out engine power generation and drive motor power driven processing, comprises the following steps:
(a) described driving engine is in running order under the control of engine control module;
(b) described the first drive motor/electrical generator enters motor and drives mode of operation under the control of the first motor control module; Wherein further comprising the steps of:
(i) the first described Automatic Transmission is placed in D Drive, and the second described Automatic Transmission is placed in neutral gear;
(ii) described self-acting clutch is in closure state;
(c) described the second drive motor/electrical generator enters generating mode of operation under the control of the second motor control module, and this second drive motor/electrical generator generates electricity under the driving of driving engine, for described the first drive motor/generator powered, and it is described charging battery module;
(d) whether the accelerator open degree size of real-time judge vehicle is greater than the accelerator open degree threshold value of systemic presupposition, and time length exceedes the time length threshold value of systemic presupposition;
(e) if, described the second drive motor/electrical generator enters motor and drives mode of operation under the control of the second motor control module, and described driving engine under the control of engine control module in idling mode, wherein further comprising the steps of:
(i) described the first Automatic Transmission and the second Automatic Transmission is all placed in D Drive;
(ii) described self-acting clutch is placed in released state;
(5) if current battery electric quantity between the high threshold of described electric weight and electric weight lowest threshold, further judges the relation between the speed of a motor vehicle threshold value of current vehicle speed and systemic presupposition;
(6) if current vehicle speed lower than described speed of a motor vehicle threshold value, power-driven system enters series model, carries out engine power generation and drive motor power driven processing, comprises the following steps:
(a) described driving engine is in running order under the control of engine control module;
(b) described the first drive motor/electrical generator enters motor and drives mode of operation under the control of the first motor control module; Wherein further comprising the steps of:
(i) the first described Automatic Transmission is placed in D Drive, and the second described Automatic Transmission is placed in neutral gear;
(ii) described self-acting clutch is in closure state;
(c) described the second drive motor/electrical generator enters generating mode of operation under the control of the second motor control module, and this second drive motor/electrical generator generates electricity under the driving of driving engine, for described the first drive motor/generator powered, and it is described charging battery module;
(d) whether the accelerator open degree size of real-time judge vehicle is greater than the accelerator open degree threshold alpha of systemic presupposition, and time length exceedes the time length threshold value n second of systemic presupposition;
(e) if, described the second drive motor/electrical generator enters motor and drives mode of operation under the control of the second motor control module, and described driving engine under the control of engine control module in idling mode, wherein further comprising the steps of:
(i) described the first Automatic Transmission and the second Automatic Transmission is all placed in D Drive;
(ii) described self-acting clutch is placed in released state;
(7) if current vehicle speed higher than described speed of a motor vehicle threshold value, power-driven system enters series-parallel connection pattern, carries out pure engine power and drives and process, and comprises the following steps:
(a) described driving engine is in running order under the control of engine control module, and directly carries out vehicle power driving; Wherein further comprising the steps of:
(i) the first described Automatic Transmission is placed in neutral gear, and the second described Automatic Transmission is placed in the shelves that advance at utmost speed;
(ii) described self-acting clutch is in closure state;
(b) described the first drive motor/electrical generator enters generating mode of operation under the control of the first motor control module;
(c) described the second drive motor/electrical generator enters generating mode of operation under the control of the 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 is greater than the accelerator open degree threshold alpha of systemic presupposition, and time length exceedes the time length threshold value n second of systemic presupposition;
(e) if described the second drive motor/electrical generator enters the idling conditions that do not generate electricity under the control of the second motor control module.
Meanwhile, this is realized in the method for the power drive control in motor vehicle driven by mixed power and also comprises braking energy feedback processing, comprises the following steps:
(41) detect the action that whether exists brake pedal to be operated;
(42) if described the first drive motor/electrical generator enters generating mode of operation under the control of the first motor control module, carries out braking energy feedback generating, and is described charging battery module;
(43) whether described the second drive motor/electrical generator of judgement drives mode of operation in motor;
(44) if described the second drive motor/electrical generator enters generating mode of operation under the control of the second motor control module, carries out braking energy feedback generating, and is described charging battery module.
On the other hand, this is realized in the method for the power drive control in motor vehicle driven by mixed power and also comprises battery thermal pretreatment, comprises the following steps:
(51) whether described battery module detects battery temperature lower than 0 ℃;
(52) if 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, this is realized in the method for the power drive control in motor vehicle driven by mixed power and also comprises car load warm braw supply processing, comprises the following steps:
(61) detect and whether have the operation of opening warm braw;
(62) if described driving engine is in running order under the control of engine control module;
(63) described engine starting water heating system is car load supply warm braw.
In the middle of reality is used; basic thought of the present invention is in order to facilitate car load master layout; improve car load power system efficiency simultaneously; power system is carried out to favorably situated architecture design; simultaneously in order to give full play to dynamic property and the economy advantage of hybrid-power bus; allow the mutual co-ordination of each parts such as driving engine, motor, change speed gear box, power-transfer clutch improve car load driving safety, take into account again the function of protection battery simultaneously, therefore a set of scientific and reasonable control policy is provided.
This strategy both can meet the tractive performance of vehicle under each operating mode, consider again the actual travel condition of city bus and motor, driving engine performance separately, make each power part be operated in as far as possible efficient region, improve the travel object of economy of car load thereby reached.And according to battery electric quantity in use procedure number, can supplement in time electric weight or forbid feedback, prevent from that battery from crossing to put or overcharge, reach the object of protection battery.Give in time power brick preheating, it still can be used in extreme cold area.
Described motor vehicle driven by mixed power major impetus system composition: driving engine, electrical generator, drive motor, self-acting clutch, Automatic Transmission, dual input back axle.
In series parallel hybrid power passenger vehicle, there are 3 power units, respectively driving engine, drive motor, electrical generator, complete vehicle structure is comparatively complicated, in order to facilitate car load parts to arrange, reduces degradation of energy in power transmission process simultaneously, in power system, adopt dual input back axle, by the be placed in two ends of back axle of driving engine and two power units of drive motor, be beneficial to car load master layout, and power directly passes to back axle and can reduce transmission of power loss.
Hybrid power whole passenger vehicle power system can be divided two-way output, and two-way can work independently, and is independent of each other, and this two-way power output route is as follows:
● 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
In the control policy of this hybrid power passenger car, drive pattern is mainly to formulate based on relevant informations such as running conditions of vehicle, battery electric quantity (SOC), vehicle velocity V, Das Gaspedal apertures; The effective control to Automatic Transmission, self-acting clutch to the key of each parts collaborative work capability control.
In above two-way power path, be electric control automatic gear shifting case, can better control its gearshift opportunity, more effective control power unit works in economical and efficient region.
To the separation of self-acting clutch with in conjunction with rationally controlling opportunity, make engine starting, gearshift more smooth-going, quick, can be better controlled opportunity driving engine participation work simultaneously, reduce power waste.
For hybrid vehicle, guaranteeing under the prerequisite of dynamic property, crucial control factor is that the power stage of driving engine guarantees all the time in its economy region, make full use of the characteristic of motor low-speed big, when vehicle is during in low speed, startup, idling operation, utilize motor to drive to avoid the high oil consumption district of driving engine.
Under special operation condition, in the time of drive motor under power, generator drive is 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 of driving.
Make full use of motor high speed constant power and the higher characteristic of whole speed adjustable range internal efficiency, in the time that battery electric quantity is higher, omnidistance motor drives, and reaches the object of energy-conserving and environment-protective.
In the time that battery electric quantity is worth lower than certain, driving engine and electrical generator all work in its economic zone, are battery charging, prevent from that battery from crossing to put; In the time that battery electric quantity is worth higher than certain, forbid feedback braking, prevent over-charging of battery.
As detect the too low or vehicle of battery temperature and have the equal start the engine work of warm braw demand, by its water heating system to power brick preheating or provide warm braw to car load.
Take 11 meters of hybrid-power bus as example, be described on this bus and apply above-mentioned power system framework and control method below, its specific embodiment and the impact of performance are as described below:
Refer to shown in Fig. 1, according to the each system layout feature of real vehicle and arrangement space constraint, whole power system framework is built by the aforementioned two-way power path way of output.
In car load mode, in control method, according to battery electric quantity, speed of a motor vehicle judgement, 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, the each power unit performance of drive motor, analyze its drive pattern according to the required work operating mode of vehicle:
(1) electric-only mode, all generally that drive motor drives separately, in the time that needs are climbed great Po (being greater than β), according to accelerator open degree size and time length (the lasting n of accelerator open degree α second), judge that electrical generator adds the opportunity of driving.
(2) series model, routine is that driving engine runs on economic zone, and generator operation is generated electricity in efficient district, and drive motor drives; Under special operation condition (such as climbing great Po), electrical generator transfers driving to by generating, is vehicle booster, engine idle.
(3) series-parallel connection pattern, pure engine drive, engine operation, in its economic zone, is used for generating electricity higher than requirement section power, 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, in the time stepping on brake pedal, carry out braking energy recovery, utilize the motor (electrical generator) that plays driving effect to vehicle before braking to carry out feeding braking energy back, determine that according to battery electric quantity and the brake pedal degree of depth feedback amount is how many.
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 judgement and each unit status refer to shown in Fig. 2.
Meanwhile, in the time detecting that battery temperature has warm braw demand lower than 0 ℃ or car load, its water heating system of engine starting provides warm braw to power brick preheating or car load.
This hybrid-power bus applies this power system framework and control method makes tractive performance, economic performance and other correlated performances of car load all reach design objective requirement.
Power-driven system framework and control method thereof in above-mentioned motor vehicle driven by mixed power are adopted, owing to wherein having adopted the mode of dual input bridge, thereby make hybrid power passenger car power system framework more reasonable, work opportunity and mode of operation to Automatic Transmission and self-acting clutch are rationally controlled, make the better collaborative work of each power unit, and determine each power unit mode of operation according to vehicle real work operating mode, make vehicle have good tractive performance, and two-way power path can work alone separately, and all there is separately the ability of independent drive vehicles, driving has larger alerting ability and integraty, simultaneously can according to vehicle actual condition and drive motor and driving engine separately performance determine and work opportunity separately, so that motor and driving engine all work in its efficient district, thereby make vehicle have good economic performance, reach energy-conservation object, can also guarantee the co-ordination state of power system under each pattern, guarantee the driving safety of vehicle, moreover, timely charging and the feedback braking state control of the present invention to battery, prevents its super-charge super-discharge, effectively protect battery, can give in time power brick preheating, expanded the territory of use of vehicle, and utilized engine water heating system to provide warm braw to car load simultaneously, save vehicle energy, thereby improved safety factor of travel, stable and reliable working performance, facilitates arrangement, Applicable scope is comparatively extensive, for constantly applying of Technology of Hybrid Electric Vehicle established solid foundation.
In this specification sheets, the present invention is described with reference to its specific embodiment.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 (12)
1. the power-driven system framework based in motor vehicle driven by mixed power is realized the method for the power drive control in motor vehicle driven by mixed power, power-driven system framework in described motor vehicle driven by mixed power comprises motor power driver sub-system, engine power driver sub-system and power coupling transmission device, described motor power driver sub-system comprises battery module, the first motor control module, the first drive motor/electrical generator, described battery module is connected with described the first drive motor/electrical generator by the first motor control module, and described the first drive motor/electrical generator is in transmission connection mutually with described power coupling transmission device, described engine power driver sub-system comprises engine control module, driving engine, the second drive motor/electrical generator, the second motor control module, described engine control module is connected with described driving engine, described electrical generator is connected with described battery module by the second described motor control module, and described driving engine is in transmission connection mutually by described electrical generator and described power coupling transmission device, it is characterized in that, described method comprises the following steps:
(1) described battery module continues to detect and obtain current battery electric quantity;
(2) judge the relation between the high threshold of electric weight and the electric weight lowest threshold of current battery electric quantity and systemic presupposition;
(3) if current battery electric quantity is greater than the high threshold of described electric weight, power-driven system enters electric-only mode, carries out tail-off and drive motor separate power and drives and process;
(4) if current battery electric quantity is less than electric weight lowest threshold, power-driven system enters series model, carries out engine power generation and drive motor power driven processing;
(5) if current battery electric quantity between the high threshold of described electric weight and electric weight lowest threshold, further judges the relation between the speed of a motor vehicle threshold value of current vehicle speed and systemic presupposition;
(6) if current vehicle speed lower than described speed of a motor vehicle threshold value, power-driven system enters series model, carries out engine power generation and drive motor power driven processing;
(7) if current vehicle speed higher than described speed of a motor vehicle threshold value, power-driven system enters series-parallel connection pattern, carries out pure engine power and drives and process.
2. the method that realizes the power drive control in motor vehicle driven by mixed power according to claim 1, is characterized in that, described tail-off and drive motor separate power drive to be processed, and comprises the following steps:
(11) described driving engine under the control of engine control module in closed condition;
(12) described the first drive motor/electrical generator enters motor and drives mode of operation under the control of the first motor control module;
(13) whether the accelerator open degree size of real-time judge vehicle is greater than the accelerator open degree threshold value of systemic presupposition, and time length exceedes the time length threshold value of systemic presupposition;
(14) if described the second drive motor/electrical generator enters motor and drives mode of operation under the control of the second motor control module.
3. the method that realizes the power drive control in motor vehicle driven by mixed power according to claim 2, it is characterized in that, in described motor power driver sub-system, also comprise the first Automatic Transmission and transmission shaft, described the first drive motor/electrical generator is successively by the first described Automatic Transmission, transmission shaft is in transmission connection mutually with described power coupling transmission device, in described engine power driver sub-system, also comprise self-acting clutch and the second Automatic Transmission, described driving engine is successively by described self-acting clutch, electrical generator, the second Automatic Transmission is in transmission connection mutually with described power coupling transmission device, further comprising the steps of in described step (12):
(121) the first described Automatic Transmission is placed in D Drive, and the second described Automatic Transmission is placed in neutral gear;
(122) described self-acting clutch is in closure state.
4. the method that realizes the power drive control in motor vehicle driven by mixed power according to claim 3, is characterized in that, further comprising the steps of in described step (14):
(141) described the first Automatic Transmission and the second Automatic Transmission is all placed in D Drive;
(142) described self-acting clutch is placed in released state.
5. the method that realizes the power drive control in motor vehicle driven by mixed power according to claim 1, is characterized in that, described engine power generation and drive motor power driven processing, comprise the following steps:
(21) described driving engine is in running order under the control of engine control module;
(22) described the first drive motor/electrical generator enters motor and drives mode of operation under the control of the first motor control module;
(23) described the second drive motor/electrical generator enters generating mode of operation under the control of the second motor control module, and this second drive motor/electrical generator generates electricity under the driving of driving engine, for described the first drive motor/generator powered, and it is described charging battery module;
(24) whether the accelerator open degree size of real-time judge vehicle is greater than the accelerator open degree threshold value of systemic presupposition, and time length exceedes the time length threshold value of systemic presupposition;
(25) if, described the second drive motor/electrical generator enters motor and drives mode of operation under the control of the second motor control module, and described driving engine under the control of engine control module in idling mode.
6. the method that realizes the power drive control in motor vehicle driven by mixed power according to claim 5, it is characterized in that, in described motor power driver sub-system, also comprise the first Automatic Transmission and transmission shaft, described the first drive motor/electrical generator is successively by the first described Automatic Transmission, transmission shaft is in transmission connection mutually with described power coupling transmission device, in described engine power driver sub-system, also comprise self-acting clutch and the second Automatic Transmission, described driving engine is successively by described self-acting clutch, electrical generator, the second Automatic Transmission is in transmission connection mutually with described power coupling transmission device, further comprising the steps of in described step (22):
(221) the first described Automatic Transmission is placed in D Drive, and the second described Automatic Transmission is placed in neutral gear;
(222) described self-acting clutch is in closure state.
7. the method that realizes the power drive control in motor vehicle driven by mixed power according to claim 6, is characterized in that, further comprising the steps of in described step (25):
(251) described the first Automatic Transmission and the second Automatic Transmission is all placed in D Drive;
(252) described self-acting clutch is placed in released state.
8. the method that realizes the power drive control in motor vehicle driven by mixed power according to claim 1, is characterized in that, described pure engine power drives to be processed, and comprises the following steps:
(31) described driving engine is in running order under the control of engine control module, and directly carries out vehicle power driving;
(32) described the first drive motor/electrical generator enters generating mode of operation under the control of the first motor control module;
(33) described the second drive motor/electrical generator enters generating mode of operation under the control of the 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 is greater than the accelerator open degree threshold value of systemic presupposition, and time length exceedes the time length threshold value of systemic presupposition;
(35) if described the second drive motor/electrical generator enters the idling conditions that do not generate electricity under the control of the second motor control module.
9. the method that realizes the power drive control in motor vehicle driven by mixed power according to claim 8, it is characterized in that, in described motor power driver sub-system, also comprise the first Automatic Transmission and transmission shaft, described the first drive motor/electrical generator is successively by the first described Automatic Transmission, transmission shaft is in transmission connection mutually with described power coupling transmission device, in described engine power driver sub-system, also comprise self-acting clutch and the second Automatic Transmission, described driving engine is successively by described self-acting clutch, electrical generator, the second Automatic Transmission is in transmission connection mutually with described power coupling transmission device, further comprising the steps of in described step (31):
(311) the first described Automatic Transmission is placed in neutral gear, and the second described Automatic Transmission is placed in the shelves that advance at utmost speed;
(312) described self-acting clutch is in closure state.
10. according to the method that realizes the power drive control in motor vehicle driven by mixed power described in any one in claim 1 to 9, it is characterized in that, in described method, also comprise and comprise the following steps braking energy feedback processing:
(41) detect the action that whether exists brake pedal to be operated;
(42) if described the first drive motor/electrical generator enters generating mode of operation under the control of the first motor control module, carries out braking energy feedback generating, and is described charging battery module;
(43) whether described the second drive motor/electrical generator of judgement drives mode of operation in motor;
(44) if described the second drive motor/electrical generator enters generating mode of operation under the control of the second motor control module, carries out braking energy feedback generating, and is described charging battery module.
11. according to the method that realizes the power drive control in motor vehicle driven by mixed power described in any one in claim 1 to 9, it is characterized in that, also comprises and comprise the following steps battery thermal pretreatment in described method:
(51) whether described battery module detects battery temperature lower than 0 ℃;
(52) if 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.
12. according to the method that realizes the power drive control in motor vehicle driven by mixed power described in any one in claim 1 to 9, it is characterized in that, also comprises car load warm braw supply processing in described method, comprises the following steps:
(61) detect and whether have the operation of opening warm braw;
(62) if described driving engine is in running order under the control of engine control module;
(63) described engine starting water heating system is car load supply warm braw.
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| CN102951116B (en) * | 2012-11-14 | 2015-04-15 | 上海汽车集团股份有限公司 | Antitheft locking method for power system of hybrid vehicle |
| CN103909820A (en) * | 2012-12-28 | 2014-07-09 | 河北御捷车业有限公司 | Half parallel connection hybrid and control vehicle system |
| CN103407365B (en) * | 2013-07-27 | 2016-01-20 | 哈尔滨耦合动力工程技术中心有限公司 | Engine motor combines hybrid power system for automobile and the mixed method of driving |
| FR3013660B1 (en) * | 2013-11-28 | 2017-05-26 | Renault Sas | METHOD AND SYSTEM FOR STARTING A THERMAL ENGINE |
| CN105291809B (en) * | 2014-07-17 | 2018-09-07 | 广州汽车集团股份有限公司 | A kind of electric powered motor coupled system and its control method |
| CN104191955B (en) * | 2014-09-12 | 2017-10-13 | 上海中科深江电动车辆有限公司 | Hybrid electric vehicle dual power source accessory system and its control method |
| CN104590019B (en) * | 2014-12-19 | 2017-08-04 | 中国人民解放军军事交通学院 | Driving electricity generation system |
| MX2020001456A (en) * | 2015-05-01 | 2021-06-04 | Blackburn Energy Inc | Method and system for auxiliary power generation. |
| CN105599587A (en) * | 2016-02-05 | 2016-05-25 | 海博瑞德（北京）汽车技术有限公司 | BSG (Belt Starter Generator)-based hybrid power system configured with double speed changing boxes |
| CN108327512A (en) * | 2018-02-09 | 2018-07-27 | 浙江吉利控股集团有限公司 | Hybrid electric drive system and vehicle |
| CN111688660A (en) * | 2019-03-12 | 2020-09-22 | 北京汽车动力总成有限公司 | Control method and device for hybrid electric vehicle |
| CN110450618A (en) * | 2019-08-14 | 2019-11-15 | 四川阿尔特新能源汽车有限公司 | Hybrid electric drive system, drive control method, apparatus and hybrid vehicle |
| CN110450616A (en) * | 2019-08-14 | 2019-11-15 | 四川阿尔特新能源汽车有限公司 | Drive system, drive control method, apparatus and hybrid vehicle |
| CN112124063A (en) * | 2020-09-28 | 2020-12-25 | 芜湖安行汽车科技有限公司 | Parallel oil-electricity hybrid airport fire fighting truck chassis |
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