CN1311999C - Parallel connection mixed power driving system and its driving method - Google Patents

Parallel connection mixed power driving system and its driving method Download PDF

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Publication number
CN1311999C
CN1311999C CNB2005100237179A CN200510023717A CN1311999C CN 1311999 C CN1311999 C CN 1311999C CN B2005100237179 A CNB2005100237179 A CN B2005100237179A CN 200510023717 A CN200510023717 A CN 200510023717A CN 1311999 C CN1311999 C CN 1311999C
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China
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power
rechargeable battery
electrical motor
driving
super capacitor
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CNB2005100237179A
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Chinese (zh)
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CN1647966A (en
Inventor
沈剑平
罗思东
孙振华
殷承良
高雪峰
徐华
徐顺余
李斌
兰志波
石常青
鲁连军
黄援军
高海鸥
Original Assignee
上海汽车工业(集团)总公司汽车工程研究院
上海交通大学
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Priority to CNB2005100237179A priority Critical patent/CN1311999C/en
Publication of CN1647966A publication Critical patent/CN1647966A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00Control parameters of input or output; Target parameters
    • B60L2240/10Vehicle control parameters
    • B60L2240/12Speed
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00Control parameters of input or output; Target parameters
    • B60L2240/40Drive Train control parameters
    • B60L2240/42Drive Train control parameters related to electric machines
    • B60L2240/421Speed
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00Control parameters of input or output; Target parameters
    • B60L2240/40Drive Train control parameters
    • B60L2240/42Drive Train control parameters related to electric machines
    • B60L2240/423Torque
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00Control parameters of input or output; Target parameters
    • B60L2240/40Drive Train control parameters
    • B60L2240/44Drive Train control parameters related to combustion engines
    • B60L2240/441Speed
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00Control parameters of input or output; Target parameters
    • B60L2240/40Drive Train control parameters
    • B60L2240/44Drive Train control parameters related to combustion engines
    • B60L2240/443Torque
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00Control parameters of input or output; Target parameters
    • B60L2240/40Drive Train control parameters
    • B60L2240/48Drive Train control parameters related to transmissions
    • B60L2240/486Operating parameters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00Control parameters of input or output; Target parameters
    • B60L2240/40Drive Train control parameters
    • B60L2240/54Drive Train control parameters related to batteries
    • B60L2240/547Voltage
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00Control parameters of input or output; Target parameters
    • B60L2240/40Drive Train control parameters
    • B60L2240/54Drive Train control parameters related to batteries
    • B60L2240/549Current
    • Y02T10/642

Abstract

The present invention provides a parallel connection mixed power drive system and a drive method thereof. An engine and a motor in the driving system are connected with a one-way overrunning clutch through gears, wherein an outer ring of the one-way overrunning clutch is connected with the output end of the engine, and an inner ring of the one-way overrunning clutch is connected with the output end of the motor. When the torque of the outer ring is greater than the torque of the inner ring, the one-way overrunning clutch is in an engaging state so as to transmit torque. When the torque of the outer ring is smaller than the torque of the inner ring, the one-way overrunning clutch is in a slipping state. The drive method comprises a motor drive mode, an engine drive mode, a combination drive mode, a running vehicle charging mode, a regenerative braking energy feedback mode and a parking charging mode. The drive proposal keeps the mechanical connection of the engine and the driving system, and the power performance of the whole vehicle is easily ensured. The working point of the engine can be optimized, and thus, the engine stably rotates within the rotation speed range with low oil consumption, high efficiency and low pollution.

Description

Parallel connection mixed power driving system and driving method thereof

Technical field

The present invention relates to a kind of automobile hybrid power drive system and driving method thereof.

Background technology

The drive scheme of mixed power electric car mainly is that driving engine and power driven battery drive car load jointly at present.Wherein driving engine comprises other engine fuels such as spark ignition engine, diesel engine, natural fuels, blue gas, methyl alcohol, ethanol; Motor comprises motors such as A/C alternating current dynamo, switched reluctance machines, DC permanent magnet; Power-transfer clutch comprises dry type, wet type, electric control clutch etc.; Coupler comprises gear, chain, belt etc.; Electronic controlled transmission comprises AMT, AT, CVT etc.Existing hybrid power drive scheme is owing to coupling device in the vehicle ' process links to each other by power-transfer clutch all the time with driving engine, and under the out-of-work situation of driving engine, coupling device will drive the engine shaft rotation, produces " falling to hold in the palm "; When existing mixed power electric car drive scheme driving engine works independently, power by driving engine by coupler drive air-conditioning, turn to, annex work such as braking; When driving engine and motor co-operation, power through coupler drive air-conditioning, turn to, annex work such as braking; But under pure electronic operating mode, because driving engine is not worked, thereby make traditional air-conditioning, turn to, device such as braking is because unpowered input and can't working, thereby must add annexes such as a cover power driven system drives air-conditioning, turns to, braking in addition again could normal operation.

Summary of the invention

The objective of the invention is to overcome the deficiency of existing hybrid power drive scheme, a kind of parallel hybrid electric vehicle drive system and driving method thereof are provided, make mixed power electric car under pure electronic operating mode air-conditioning, turn to, annex such as braking still can normal operation and need not to add in addition electronic system, utilize super capacitor to improve starting power, braking energy organic efficiency simultaneously, thereby improve car load tractive performance, reduction fuel oil consumption.

In order to achieve the above object, parallel connection mixed power driving system of the present invention adopts following technical scheme:

A kind of parallel connection mixed power driving system, comprise wheel, main reduction gear, automatic machincal transmission, back power-transfer clutch, coupler, mono-directional overrun clutch, driving engine, air-conditioning compressor, power steering gear, the transmission fluid press pump, electrical motor, inverter, electric vacuum pump, battery, dc dc converter, battery manager, rechargeable battery, AC-DC converter, the super capacitance management device, super capacitor, wherein said wheel links to each other with main reduction gear, described back power-transfer clutch links to each other with main reduction gear by automatic machincal transmission, wherein said driving engine mouth links to each other with the outer ring of mono-directional overrun clutch, described mono-directional overrun clutch inner ring is by coupler and electrical motor, air-conditioning compressor, power steering gear links to each other with the transmission fluid press pump, described super capacitor links to each other with electrical motor with AC-DC converter by the super capacitance management device, described rechargeable battery links to each other with electrical motor with inverter by battery manager, and described electric vacuum pump links to each other with rechargeable battery with dc dc converter by battery.

Described parallel type hybrid dynamic driving method is, adopt above-mentioned parallel connection mixed power driving system, described driving method comprises motor drive mode, the engine drive pattern, the combination drive pattern, the driving charge mode, regenerative braking energy feedback pattern, stopping for charging pattern, wherein, the engine drive pattern is the main drive pattern of vehicle, and motor drive mode is the assistive drive pattern, and auxiliary power source is rechargeable battery and super capacitor.

(1) motor drive mode

When starting stage or driving engine were in running on the lower load, the heat efficiency of driving engine was lower and exhaust emissions is in poor shape.Therefore during vehicle start, driving engine is not worked, and mono-directional overrun clutch skids, and transfer torque has not been avoided the towing astern to driving engine, back clutch engagement.Kinetic current is through the path: super capacitor rechargeable battery → inverter → electrical motor → coupler → after power-transfer clutch → mechanical automatic gearbox → main reduction gear → wheel.Another part power passes to appurtenances such as air-conditioning compressor, power steering gear, transmission fluid press pump through coupler, guarantee the normal operation of these parts behind vehicle launch.When the super capacitor electric energy was not enough, by the work that rechargeable battery provides electric energy to keep electrical motor, rechargeable battery also provided electric energy by inverter to attached consumers such as electric vacuum pumps simultaneously.Super capacitor can provide big electric current to electrical motor at short notice, makes electrical motor produce big cranking torque, has alleviated the load of rechargeable battery greatly, has prolonged the life-span of rechargeable battery.Vehicle is when starting, and electrical motor produces high moment of torsion, has improved the starting performance of vehicle.

(2) engine drive pattern

When the driving torque of vehicle reached setting value, by vehicle control unit controls, vehicle entered the engine drive pattern.Behind the engine starting, the moment of torsion that mono-directional overrun clutch is positioned at the driving engine end is during greater than the moment of torsion of coupler end, and mono-directional overrun clutch engages, and back power-transfer clutch also engages, and electrical motor quits work.Kinetic current through the path: driving engine → mono-directional overrun clutch → coupler → after power-transfer clutch → mechanical automatic gearbox → main reduction gear → wheel.Another part passed to appurtenances such as air-conditioning compressor, power steering gear, transmission fluid press pump after the power that driving engine sends passed to coupler, made that these parts also can normal operation after the power drive mode variation.In this mode of operation, owing to adopted whole-control system and automatic machincal transmission, engine operation is at the moderate duty high efficient area, can obtain higher fuel economy, lower discharging and pulsation-free driving performance.Adopt driving engine independent drive vehicle, as the main drive pattern of vehicle, can avoid electrical motor when powered vehicle is run at high speed, the quick loss of rechargeable battery has improved the travelled distance of vehicle.At this moment, rechargeable battery also provides electric energy for attached consumers such as electric vacuum pumps.When the electric weight of rechargeable battery and super capacitor is crossed low or electrical motor can not finish powered vehicle the time, also by driving engine starting and powered vehicle separately.

(3) combination drive pattern

When vehicle brish acceleration or climbing etc. needed big driving torque, the common powered vehicle of driving engine and electrical motor was to satisfy the power requirement of vehicle.This moment, mono-directional overrun clutch was all closed with the back power-transfer clutch, the power that driving engine and electrical motor send makes up in power coupler, a part is through power-transfer clutch, automatic machincal transmission are passed to wheel with powered vehicle later, another part transmission of power is given appurtenances such as air-conditioning compressor, power steering gear, transmission fluid press pump, guarantees the normal operation of these parts.Super capacitor can provide big electric current to electrical motor at short notice, make electrical motor produce big moment of torsion, so the required electric energy of direct motor drive is taken from super capacitor earlier.In the combination drive pattern, provide electric energy to attached consumers such as electric vacuum pumps by rechargeable battery.

(4) driving charge mode

In the vehicle ' stage, the electric weight of rechargeable battery and super capacitor is crossed when hanging down, and by vehicle control unit controls, driving engine is worked under the high load capacity operating mode, and electrical motor has become electrical generator.Kinetic current through the path: driving engine → mono-directional overrun clutch → coupler → after power-transfer clutch → mechanical automatic gearbox → main reduction gear → wheel; Part power is passed to appurtenances such as air-conditioning compressor, power steering gear and transmission fluid press pump behind coupler, guarantee the requirement of finishing the work of each appurtenances; Another part drives electrical generator work, gives the charging of rechargeable battery and super capacitor.In the driving process of charging, the electric energy that electrical generator sends also is used for the work of attached consumers such as electric vacuum pump.When the electric weight of rechargeable battery and super capacitor reached setting value, the driving charge mode finished.

(5) regenerative braking energy feedback pattern

When car brakeing or Reduced Speed Now, carry out braking energy feedback by vehicle control unit controls.Mono-directional overrun clutch is positioned at the moment of torsion of the moment of torsion of driving engine end less than the coupler end, mono-directional overrun clutch skids, back power-transfer clutch closure, driving engine stops outputting power, electrical motor is with the form work of electrical generator, braking energy is converted into electric energy, is stored in the middle of super capacitor and the electrokinetic cell, realize the feedback of braking energy.Because the voltage class of super capacitor less than rechargeable battery, therefore when charging, is charged earlier to the super capacitor charging, and then to rechargeable battery.In this mode of operation, part power passes to appurtenances such as air-conditioning compressor, power steering gear, transmission fluid press pump from coupler.The electric energy that electrical generator sends has part to pass to attached consumers such as electric vacuum pump by inverter.

(6) stopping for charging pattern

Vehicle is when stopping, if the electric weight of rechargeable battery and super capacitor is low excessively, can carry out the stopping for charging pattern, at this moment the mono-directional overrun clutch closure, back power-transfer clutch disconnects, the path of kinetic current warp: driving engine → mono-directional overrun clutch → coupler → electrical generator → super capacitor electrokinetic cell; Another part power passes to appurtenances such as air-conditioning compressor, power steering gear, AMT Hydraulic Pump by coupler simultaneously.After the electric weight of rechargeable battery and super capacitor reached requirement, the stopping for charging pattern finished.In this pattern, provide electric energy to attached consumers such as electric vacuum pumps by rechargeable battery.

Because super capacitor has the characteristic that realizes fast charge in the extremely short time, as a kind of improvement of technique scheme, the voltage class of described super capacitor 15 is less than the voltage class of rechargeable battery 12.Therefore in process of charging, charge to super capacitor earlier.

Compare with existing, parallel connection mixed power driving system of the present invention has following remarkable result:

This drive scheme has kept the mechanical connection of driving engine and drive system, and the tractive performance of car load is guaranteed easily, and can the operation point of driving engine be optimized, and makes driving engine stable running in low oil consumption, high efficiency and oligosaprobic range of speed.Driving engine links to each other by gear and mono-directional overrun clutch with motor, wherein the outer ring of mono-directional overrun clutch links to each other with the driving engine mouth, the inner ring of mono-directional overrun clutch links to each other with motor output end, when the moment of torsion of outer ring during greater than the moment of torsion of inner ring, mono-directional overrun clutch is in engagement state, transfer torque; The moment of torsion of outer ring is during less than the moment of torsion of inner ring, and mono-directional overrun clutch is in slipping state, can not transfer torque, thereby when driving engine quits work, reduce unnecessary waste of power, avoid towing astern phenomenon driving engine, and this consumption reduction mode does not need to add automatically controlled device in addition, and scenario-frame is simple.

Power drive system is by super capacitor and electrokinetic cell combined action, because the characteristic of big electric current can be accepted or emit to super capacitor at short notice, when vehicle start, acceleration and climbing etc. need the operating mode of high pulling torque, at first provide power by super capacitor, the back provides power by electrokinetic cell, provides effectively to start required power; Simultaneously, glancing impact reclaims maximum energy as far as possible, and feedback electric energy is at first returned super capacitor, and then gradually electrokinetic cell is charged.And because in the drive scheme of the present invention, the operating voltage of super capacitor and electrokinetic cell is interval different, thereby can not produce electric energy scurrying to electrokinetic cell in the super capacitor.

The dynamic coupling device of this drive scheme under the parking operating mode, still can be by the driven by motor air-conditioning, turn to, annex such as braking carries out work, can utilize existing structure on the vehicle, need not to add in addition engine installation, reduces manufacturing cost.

Description of drawings

Fig. 1 is the scheme drawing of each parts position relation in the parallel type hybrid dynamic drive scheme of the present invention.

The specific embodiment

As shown in Figure 1, a kind of parallel connection mixed power driving system, comprise wheel 20, main reduction gear 1, automatic machincal transmission 2, back power-transfer clutch 3, coupler 4, mono-directional overrun clutch 5, driving engine 16, air-conditioning compressor 17, power steering gear 18, transmission fluid press pump 19, wherein said wheel 20 links to each other with main reduction gear 1, described back power-transfer clutch 3 links to each other with main reduction gear 1 by automatic machincal transmission 2, it is characterized in that: also comprise electrical motor 6, inverter 7, electric vacuum pump 8, battery 9, dc dc converter 10, battery manager 11, rechargeable battery 12, AC-DC converter 13, super capacitance management device 14, super capacitor 15, the mouth of wherein said driving engine 16 links to each other with the outer ring of mono-directional overrun clutch 5, the inner ring of described mono-directional overrun clutch 5 is by coupler 4 and electrical motor 6, air-conditioning compressor 17, power steering gear 18 links to each other with transmission fluid press pump 19, described super capacitor 15 links to each other with electrical motor 6 with AC-DC converter 13 by super capacitance management device 14, described rechargeable battery links to each other with electrical motor 6 with inverter 7 by battery manager 11, described electric vacuum pump 8 links to each other with rechargeable battery with dc dc converter 10 by battery 9, the voltage class 266V of super capacitor is less than the voltage class 336V of rechargeable battery, and described rechargeable battery 12 is selected ni-mh Ni-MH battery.

Wherein main reduction gear 1 is rev down in the automotive transmission, the major part that increases moment of torsion;

Automatic machincal transmission 2 with the transmission of power of driving engine output to driving device;

Back power-transfer clutch 3 guarantees the automobile balance starting, is convenient to gear shift and prevents the transmission system overload;

Coupler 4 is with the stack that is coupled of multiple power;

The power of mono-directional overrun clutch 5 transmission driving engines carries out automatic clutch simultaneously and switches;

Electrical motor 6. provides the starting power of automobile and the part power in the driving process;

Inverter 7 is converted to direct current (DC) a kind of power supply changeover device of interchange;

The degree of vacuum of vehicle vacuum booster improved vacuum-assisted ability when electric vacuum pump 8 increased high idle speed running behind the cold starts, the traffic safety when guaranteeing cold car;

24V battery 9 conventional low circuit propulsions source;

Dc dc converter 10 is used for DC converting;

11 pairs of battery systems of battery manager manage;

Rechargeable battery 12 provides the running car required drive, simultaneously unnecessary power is stored;

AC-DC converter 13 is used for AC/DC transfer;

14 pairs of super capacitor systems of super capacitance management device manage;

Super capacitor 15 provides the vehicle starting required drive, simultaneously unnecessary power is stored;

Driving engine 16 provides the automobile normal running required drive;

The normal operation of air-conditioning compressor 17 conveyings and compressed refrigerant vapor, assurance refrigerating cycle;

Power steering gear 18 provides power for turning to;

Transmission fluid press pump 19 provides hydraulic pressure for gear box actuator.

A kind of parallel type hybrid dynamic driving method adopts above-mentioned parallel connection mixed power driving system, and described driving method comprises motor drive mode, the engine drive pattern, the combination drive pattern, driving charge mode, regenerative braking energy feedback pattern, the stopping for charging pattern, wherein

Motor drive mode

When vehicle start stage or motivation were in running on the lower load, electrical motor 6 worked independently, and mono-directional overrun clutch 5 skids, and transfer torque has not been avoided the towing astern to driving engine 16, and back power-transfer clutch 3 engages; Part power passes to wheel 20 by following approach from super capacitor and rechargeable battery 12: super capacitor 15 and rechargeable battery 12 → inverter 7 → electrical motor 6 → coupler 4 → back power-transfer clutch 3 → automatic machincal transmission AMT2 → main reduction gear 1 → wheel 20; Simultaneously, another part power passes to air-conditioning compressor 17, power steering gear 18, transmission fluid press pump 19 by following approach from super capacitor 15 and rechargeable battery 12: super capacitor 15 and rechargeable battery 12 → inverter 7 → electrical motor 6 → coupler 4 → air-conditioning compressor 17, power steering gear 18, transmission fluid press pump 19 guarantee air-conditioning compressor 17, power steering gear 18, the normal operation of transmission fluid press pump 19 behind vehicle launch.When the super capacitor electric energy was not enough, by the work that rechargeable battery 12 provides electric energy to keep electrical motor, simultaneously, rechargeable battery 12 provided electric energy by dc dc converter 10,24V battery to attached consumers such as electric vacuum pumps 8.Super capacitor 15 can provide big electric current to electrical motor 6 at short notice, makes electrical motor 6 produce big cranking torque, has alleviated the load of rechargeable battery 12 greatly, has prolonged the life-span of rechargeable battery 12.Vehicle is when starting, and the high moment of torsion that electrical motor 6 produces has improved the starting performance of vehicle.

The engine drive pattern

When vehicle launch rear drive moment of torsion reaches in the setting value, by vehicle control unit controls, driving engine 16 works independently, when the moment of torsion that mono-directional overrun clutch 5 is positioned at driving engine 16 1 ends is positioned at the moment of torsion of coupler 4 one ends greater than mono-directional overrun clutch 5, mono-directional overrun clutch 5 engages, back power-transfer clutch 3 also engages, and electrical motor 6 quits work; Part power is by following approach drive wheels 20: driving engine 16 → mono-directional overrun clutch 5 → coupler 4 → back power-transfer clutch 3 → automatic machincal transmission AMT2 → main reduction gear 1 → wheel 20; Simultaneously, another part power passes to air-conditioning compressor 17, power steering gear 18, transmission fluid press pump 19 by coupler 4 from driving engine 16, makes that air-conditioning compressor 17, power steering gear 18, transmission fluid press pump 19 still can normal operation after power drive mode changes.At this moment, rechargeable battery also provides electric energy for attached consumers such as electric vacuum pumps 8.When the electric weight of rechargeable battery 12 and super capacitor 15 is crossed low or electrical motor can not finish powered vehicle the time, also by driving engine starting and powered vehicle separately.In this mode of operation, owing to adopted whole-control system and automatic machincal transmission 2, driving engine 16 is operated in the moderate duty high efficient area, can obtain higher fuel economy, lower discharging and pulsation-free driving performance.Adopt driving engine 16 independent drive vehicles, as the main drive pattern of vehicle, can avoid electrical motor 6 when powered vehicle is run at high speed, the quick loss of rechargeable battery 12 has improved the travelled distance of vehicle.

The combination drive pattern

When vehicle brish acceleration or climbing etc. need big driving torque, in order to satisfy the power requirement of vehicle, during the common powered vehicle of driving engine 16 and electrical motor 6, mono-directional overrun clutch 5 is all closed with back power-transfer clutch 3, driving engine 16 makes up in coupler 4 with the power that electrical motor 6 sends, part power warp is power-transfer clutch 3 later, automatic machincal transmission 2 is passed to wheel 20 with powered vehicle, another part power passes to air-conditioning compressor 17 by coupler 4, power steering gear 18, transmission fluid press pump 19 guarantees air-conditioning compressor 17, power steering gear 18, transmission fluid press pump 19 normal operation.Super capacitor 15 can provide big electric current to electrical motor 6 at short notice, makes electrical motor 6 produce big moment of torsion, so the required electric energy of electrical motor 6 drivings is taken from super capacitor 15 earlier.In the combination drive pattern, rechargeable battery 12 provides electric energy by dc dc converter 10,24V battery to attached consumers such as electric vacuum pumps 8.

The driving charge mode

In the vehicle ' process, cross when low when the electric weight of rechargeable battery 12 and super capacitor 15, by vehicle control unit controls, driving engine 16 is worked under the high load capacity operating mode, and electrical motor 6 plays the generating effect.Part power is by following approach drive wheels: driving engine → mono-directional overrun clutch → coupler → back power-transfer clutch → automatic machincal transmission AMT → main reduction gear → wheel; Part power is passed to air-conditioning compressor 17, power steering gear 18 and transmission fluid press pump from driving engine through coupler, guarantees the requirement of finishing the work of air-conditioning compressor 17, power steering gear 18 and transmission fluid press pump 19; Another part power drives electrical motor 6 work by coupler 4, gives rechargeable battery 12 and super capacitor 15 chargings.Because super capacitor has the characteristic that realizes fast charge in the extremely short time, and therefore the voltage class 266V of this programme setting super capacitor charges to super capacitor earlier in process of charging less than the voltage class 336V of electrokinetic cell.In the driving process of charging, the electric energy that electrical motor 6 sends drives the work of attached consumers such as electric vacuum pump 8 by following approach: electrical motor 6 → inverter 7 → battery manager 11 → rechargeable battery 12 → dc dc converter 10 → 24V battery → electric vacuum pump 8.When the electric weight of rechargeable battery 12 and super capacitor 15 reached setting value, the driving charge mode finished.In this mode of operation, rechargeable battery 12 provides electric energy by dc dc converter 10,24V battery to attached consumers such as electric vacuum pumps 8.

The regenerative braking energy feedback pattern

When car brakeing or Reduced Speed Now, carry out braking energy feedback by the vehicle control unit controls drive system: the moment of torsion that mono-directional overrun clutch 5 is positioned at driving engine 16 1 ends is positioned at the moment of torsion of coupler 4 one ends less than mono-directional overrun clutch 5, mono-directional overrun clutch 5 skids, back power-transfer clutch 3 closures, driving engine 16 stops outputting power, electrical motor 6 is with the form work of electrical generator 16, braking energy is converted into electric energy, be stored in the middle of super capacitor 15 and the rechargeable battery 12, realize the feedback of braking energy.In this mode of operation, rechargeable battery 12 provides electric energy by dc dc converter 10,24V battery to attached consumers such as electric vacuum pumps 8.

The stopping for charging pattern

After vehicle stops to travel, if rechargeable battery 12 is low excessively with the electric weight of super capacitor 15, can carry out the stopping for charging pattern, this moment mono-directional overrun clutch 5 closures, back power-transfer clutch 3 disconnects, super capacitor 15 and rechargeable battery 12 are charged, and a part of power passes to air-conditioning compressor 17, power steering gear 18, transmission fluid press pump by coupler 4 simultaneously.In this mode of operation, rechargeable battery 12 provides electric energy by dc dc converter 10,24V battery to attached consumers such as electric vacuum pumps 8.

Because the voltage class of super capacitor 15 less than rechargeable battery 12, therefore when charging, is given super capacitor 15 chargings earlier, and then is given rechargeable battery 12 chargings.

Claims (3)

1, a kind of parallel connection mixed power driving system, comprise wheel (20), main reduction gear (1), automatic machincal transmission (2), back power-transfer clutch (3), coupler (4), mono-directional overrun clutch (5), driving engine (16), air-conditioning compressor (17), power steering gear (18), transmission fluid press pump (19), wherein said wheel (20) links to each other with main reduction gear (1), described back power-transfer clutch (3) links to each other with main reduction gear (1) by automatic machincal transmission (2), it is characterized in that: also comprise electrical motor (6), inverter (7), electric vacuum pump (8), battery (9), dc dc converter (10), battery manager (11), rechargeable battery (12), AC-DC converter (13), super capacitance management device (14), super capacitor (15), the mouth of wherein said driving engine (16) links to each other with the outer ring of mono-directional overrun clutch (5), the inner ring of described mono-directional overrun clutch (5) is by coupler (4) and electrical motor (6), air-conditioning compressor (17), power steering gear (18) links to each other with transmission fluid press pump (19), described super capacitor (15) links to each other with electrical motor (6) with AC-DC converter (13) by super capacitance management device (14), described rechargeable battery links to each other with electrical motor (6) with inverter (7) by battery manager (11), and described electric vacuum pump (8) links to each other with rechargeable battery with dc dc converter (10) by battery (9).
2, parallel connection mixed power driving system according to claim 1 is characterized in that: the voltage class of described super capacitor (15) is less than the voltage class of rechargeable battery (12).
3, a kind of parallel type hybrid dynamic driving method, it is characterized in that: adopt the described parallel connection mixed power driving system of claim 1, described driving method comprises motor drive mode, the engine drive pattern, combination drive pattern, driving charge mode, the regenerative braking energy feedback pattern, the stopping for charging pattern, wherein
Described motor drive mode is,
When vehicle start stage or electrical motor were in running on the lower load, electrical motor (6) worked independently, and mono-directional overrun clutch (5) skids, transfer torque not, and back power-transfer clutch (3) engages; Part power passes to wheel (20) from super capacitor (15) and rechargeable battery (12), simultaneously, another part power passes to air-conditioning compressor (17), power steering gear (18), transmission fluid press pump (19) from super capacitor (15) and rechargeable battery (12), when the super capacitor electric energy is not enough, provide electric energy to keep the work of electrical motor by rechargeable battery (12), simultaneously, rechargeable battery (12) provides electric energy by dc dc converter (10), battery to electric vacuum pump (8) equipment;
Described engine drive pattern is,
When vehicle launch rear drive moment of torsion reaches in the setting value, the moment of torsion that mono-directional overrun clutch (5) is positioned at driving engine (16) one ends is positioned at the moment of torsion of coupler (4) one ends greater than mono-directional overrun clutch (5), mono-directional overrun clutch (5) engages, back power-transfer clutch (3) also engages, and electrical motor (6) quits work; Driving engine (16) works independently, a part of power driven wheel (20), and simultaneously, another part power passes to air-conditioning compressor (17), power steering gear (18), transmission fluid press pump (19) by coupler (4) from driving engine (16); At this moment, rechargeable battery (12) also provides electric energy for electric vacuum pump (8), crosses low or electrical motor (6) can not finish powered vehicle the time when the electric weight of rechargeable battery (12) and super capacitor (15), is started separately and powered vehicle by driving engine (16);
Described combination drive pattern is,
When vehicle needs big driving torque, the common powered vehicle of driving engine (16) and electrical motor (6), mono-directional overrun clutch (5) is all closed with back power-transfer clutch (3), driving engine (16) makes up in coupler (4) with the power that electrical motor (6) sends, part power warp is power-transfer clutch (3) later, automatic machincal transmission (2) is passed to wheel (20) with powered vehicle, another part power passes to air-conditioning compressor (17) by coupler (4), power steering gear (18), transmission fluid press pump (19), rechargeable battery this moment (12) is by dc dc converter (10), battery provides electric energy to electric vacuum pump (8);
Described driving charge mode is,
In the vehicle ' process, when the electric weight of rechargeable battery (12) and super capacitor (15) is crossed when low, driving engine (16) is worked under the high load capacity operating mode, generate electricity by electrical motor (6), part power driven wheel, another part power is passed to air-conditioning compressor (17) from driving engine through coupler, power steering gear (18) and transmission fluid press pump (19), another part power drives electrical motor (6) work by coupler (4), to rechargeable battery (12) and super capacitor (15) charging, the electric energy that electrical motor (6) sends drives electric vacuum pump (8) equipment work, when the electric weight of rechargeable battery (12) and super capacitor (15) reached setting value, the driving charge mode finished;
Described regenerative braking energy feedback pattern is,
When car brakeing or Reduced Speed Now, the moment of torsion that mono-directional overrun clutch (5) is positioned at driving engine (16) one ends is positioned at the moment of torsion of coupler (4) one ends less than mono-directional overrun clutch (5), mono-directional overrun clutch (5) skids, back power-transfer clutch (3) closure, driving engine (16) stops outputting power, and electrical motor (6) is converted into electric energy with the form work of electrical generator (16) with braking energy, be stored in the middle of super capacitor (15) and the rechargeable battery (12), realize the feedback of braking energy;
Described stopping for charging pattern is,
After vehicle stops to travel, if rechargeable battery (12) is low excessively with the electric weight of super capacitor (15), can carry out the stopping for charging pattern, this moment mono-directional overrun clutch (5) closure, back power-transfer clutch (3) disconnects, super capacitor (15) and rechargeable battery (12) are charged, and a part of power passes to air-conditioning compressor (17), power steering gear (18), transmission fluid press pump (19) by coupler (4) simultaneously.
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