CN102848897B - A kind of Hybrid Vehicle electronic stepless speed regulation system - Google Patents
A kind of Hybrid Vehicle electronic stepless speed regulation system Download PDFInfo
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- CN102848897B CN102848897B CN201210287861.3A CN201210287861A CN102848897B CN 102848897 B CN102848897 B CN 102848897B CN 201210287861 A CN201210287861 A CN 201210287861A CN 102848897 B CN102848897 B CN 102848897B
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Abstract
Based on a Hybrid Vehicle electronics stepless time adjustment system for compound flux switch permanent magnet motor, comprise driving engine, power-transfer clutch, compound flux switch permanent magnet motor, electric power module, battery pack, main reduction gear, wheel and control unit.The present invention is owing to adopting compound flux switch permanent magnet motor as power distribution unit, and both gearless, again without mechanicals device such as slip ring, carbon brushes, loss is low, structure is simple.Only adopt a motor just can realize the operation of various modes, save space, improve comfort level.Electronics stepless time adjustment system of the present invention, driving engine works in Effec-tive Function region always, effectively improves car load efficiency.
Description
Technical field
The invention belongs to field of automotive power, is a kind of speed regulating device of input power distribution type hybrid electric vehicle.
Background technology
In recent years, along with global environment worsens and the worsening shortages of oil resources, orthodox car industry is faced with baptism.Therefore, the research and development of energy-conserving and environment-protective new-energy automobile have become one of the strategic industry of countries in the world government and the focus of domestic and international experts and scholars concern.As a class of new-energy automobile, the remarkable advantage that hybrid vehicle is high with its fuel economy, exhaust emissions is low, course continuation mileage is long is shown one's talent, and obtains fast speed development.
And effectively to realize one of gordian technique of hybrid vehicle basic function be research and development performance-oriented electronic stepless speed regulation (electronicallycontinuouslyvariabletransmission, be called for short E-CVT) systems.According to whether adopting mechanical gear, the E-CVT system that existing listing and domestic and international experts and scholars are extensively studied can be divided into two large classes: a class is the E-CVT system adopting mechanical gear (planetary wheel), another kind of for not having the gearless E-CVT system of gears meshing.All there is a problem in the E-CVT system with mechanical gear power distribution unit, planetary wheel namely must be adopted to regulate engine and to be connected in the energy transmission between the motor on automobile driving axle.The same with all mechanical gears, planetary wheel also exists the shortcoming of transmission loss and gear noise, and artificially must add lubricant to gear termly and safeguard.And the E-CVT system of mechanical gear power distribution unit, usually adopt a double-rotor machine to realize power division, namely adopt electric link mode to overcome the problems referred to above.Then, the electronic stepless speed regulation system of this electric link also creates a new problem while overcoming planetary wheel shortcoming: the double-rotor machine adopted in system must pass through slip ring and carbon brush inputs or outputs electric flux from rotor.And well-known, slip ring and carbon brush will produce extra loss, and need periodical maintenance.In addition, the heat dissipation problem being in innermost inner rotor motor is also a Main Bottleneck of this system practical application of restriction.Therefore, research and development one neither needs planetary wheel, does not also need slip ring and carbon brush, and efficiency is high, it is convenient to control, stable new E-CVT system becomes current hybrid vehicle speed governing field hot issue.
Summary of the invention
technical matters:the present invention proposes a kind of Hybrid Vehicle electronics stepless time adjustment system based on combined type flux switch permanent magnet motor.This system both gearless, also without slip ring and carbon brush.Both solve the shortcoming that band gear power distribution unit also exists transmission loss and gear noise, solve again excess loss, periodical maintenance and heat dissipation problem that band brush double-rotor machine system produces.
technical scheme:hybrid Vehicle electronics stepless time adjustment system based on compound flux switch permanent magnet motor of the present invention, comprise driving engine, power-transfer clutch, main reduction gear, wheel, it is characterized in that also comprising compound flux switch permanent magnet motor, electric power module, battery pack, control unit; Driving engine connects the internal rotor of compound flux switch permanent magnet motor by power-transfer clutch, electric power model calling is between the internal stator and external stator of compound flux switch permanent magnet motor, and internal stator and the electric power module of battery pack and compound flux switch permanent magnet motor are connected; The outer rotor of compound flux switch permanent magnet motor is connected with wheel through main reduction gear.; Control unit is connected with driving engine, electric power module, battery pack respectively.
Compound flux switch permanent magnet motor is made up of internal rotor, internal stator, external stator, outer rotor, and internal stator is connected as a whole with external stator by magnetism-isolating loop.
Electric power module comprises the first power inverter, DC-DC conversion circuit, the second power inverter, and the first power inverter and the second power inverter all possess biphase rectification, invert function; Battery pack exports or stored energy through electric power module and the second power inverter.
Compound flux switch permanent magnet motor, utilize the feature of double-salient-pole structural electromotor, integrated by the stator placing permanent magnet and armature loop, and the outer rotor of outer motor is coupled through the wheel of main reduction gear with applicable low speed, the internal rotor of interior motor is coupled with the driving engine being applicable to high speed through power-transfer clutch.
By three slewings on automobile: driving engine, E-CVT and wheel transmission height integrated, between driving engine and wheel transmission without direct mechanical link, to realize the electronic stepless speed regulation system of electric link.
When working as power divider, the internal rotor of engine drive compound flux switch motor, by electromagnetic coupled effect, internal stator winding obtains a gross electric capacity, this electric power will be divided into two parts, AC rectification becomes the DC power transmission matched with batteries charging voltage to battery pack by internal stator winding through the second power inverter by a part, is stored in battery pack with the form of chemical power; Another part with the form of electric power through DC-DC conversion circuit, vdc is adjusted to the work of applicable external stator winding, again by the first power inverter inversion, by electrical energy transfer in the external stator winding of compound flux switch motor, by electromagnetic coupled, make outer rotor produce machine torque and drive wheel with the form of mechanical energy.Above-mentioned two-part poower flow size and direction can according to demand, by control unit reasonable distribution.Its total control policy for: (1) is when the electric power that the mechanical horsepower by driving engine is converted into compound flux switch motor internal stator exceedes the mechanical horsepower driven needed for wheel, control unit controls the first power inverter distribute energy, a part of electric power is provided electric power through DC-DC converter, the outside stator winding of the first power inverter, then changes into the mechanical horsepower needed for vehicular drive; The remaining electric power of another part then passes through the second power inverter to batteries charging, stores excess energy; (2) when the electric power that the mechanical horsepower by driving engine is converted into compound flux switch motor internal stator is less than the mechanical horsepower driven needed for wheel, control unit controls the second power inverter and whole electric energy is delivered to external stator winding through DC-DC converter, the first power inverter, control battery pack simultaneously and provide not enough electric energy through DC-DC converter, the first power inverter also outside stator winding, the energy now needed for wheels travel is provided jointly by battery pack and driving engine two aspect.Except above-mentioned two kinds of main operation modes, also there are other mode of operations a lot, by means of only battery pack to external stator winding power, realize electric-only mode; When vehicle descending or brake, realize the energy back etc. of mechanical energy.
Beneficial effect:
1, the present invention's both gearless, again without physical constructions such as charcoal brush, slip rings, can make driving engine be operated in efficient region always, thus significantly improve the work efficiency of car load.
2, creativeness proposes a kind of design philosophy of compound flux switch permanent magnet motor, utilize the feature of double-salient-pole structural electromotor, the inside and outside stator placing permanent magnet and armature loop is integrated, and the outer rotor of motor is coupled with the wheel transmission of applicable low speed, internal rotor be coupled with the driving engine be applicable at a high speed, avoids internal rotor in traditional double rotor electric machine and is difficult to heat radiation thus cannot the technical bottleneck of practical application.
3, based on the E-CVT system that compound flux switch permanent magnet motor is built, can by three slewing (driving engines on automobile by ingehious design, E-CVT and wheel legacy system) highly integrated, to realize the electronic stepless speed regulation system of electric link, thus there is high power density, high efficiency and the quiet advantage run.Not only can realize the repertoire of existing electronic stepless speed regulation system, and all there is comparatively significantly advantage in structure, volume, performance, heat radiation, manufacturing process, practicality etc., and method of designing is flexible and changeable, can adjust according to system requirements.
Accompanying drawing explanation
Fig. 1 is the constructional drawing of the compound flux switch permanent magnet motor adopted in the present invention, wherein has internal rotor 3, internal stator 4, external stator 5, outer rotor 6, every magnetic aluminium ring 16.
Fig. 2 is the Hybrid Vehicle electronics stepless time adjustment system topology block diagram that the present invention is based on compound flux switch permanent magnet motor, comprising driving engine 1, power-transfer clutch 2, compound flux switch permanent magnet motor 7, first power inverter 8, DC-DC conversion circuit 9, second power inverter 10, battery pack 12, control unit 13, main reduction gear 14, wheel 15.
Detailed description of the invention
As Fig. 2, the present invention includes driving engine 1, power-transfer clutch 2, compound flux switch permanent magnet motor 7, electric power module 11, battery pack 12, control unit 13, main reduction gear 14(can not need, adopt outer rotor direct driving mode), wheel 15.Driving engine 1 connects the internal rotor 3 of compound flux switch permanent magnet motor 7 by power-transfer clutch 2, internal stator 4 is connected with the second power inverter 10 and connects with DC-DC conversion circuit 9, first power inverter 8, external stator 5, and outer rotor 6 is connected with wheel 15 through main reduction gear 14.Control unit 13 is connected with driving engine 1, electric power module 11, battery pack 12 respectively.Battery pack 12 can be stored by the second power inverter 10 or the first power inverter 8 and DC-DC conversion circuit 9 or be exported electric energy.
Hybrid Vehicle electronics stepless time adjustment system based on combined type flux switch permanent magnet motor of the present invention comprises: driving engine, power-transfer clutch, main reduction gear, combined type flux switch permanent magnet motor, electric power module, battery pack, control unit and driving wheel.Driving engine is connected by the internal rotor of power-transfer clutch with combined type flux switch permanent magnet motor, and electric power module, battery pack are between inside and outside stator armature winding, and outer rotor connects driving wheel through main reduction gear (also can not need, directly drive).Control unit is connected with driving engine, electric power module, battery pack respectively.Combined type flux switch permanent magnet motor is made up of inside and outside two independent rotors and an integrated stator, wherein integrated stator is made up of magnetism-isolating loop three part between internal stator, external stator, inside and outside stator core, and on inside and outside stator, be all wound with heterogeneous centralized armature loop and the permanent magnet tangentially alternately magnetized.This electronic stepless speed regulation system comprises two and overlaps independently poower flow: first set poower flow is at driving engine, flow between internal rotor and internal stator, for the mechanical energy of driving engine passes to internal rotor, be coupled through electromagnetic induction again, changing into electric energy is input in internal stator winding, internal stator winding switching battery pack, becomes chemical power to store electric energy conversion.Second cover poower flow is in battery pack, flow between external stator and outer rotor, and the chemical energy for battery pack becomes electrical energy transfer to external stator winding, then through electromagnetic induction coupling, changes into mechanical energy and be input to outer rotor, then pass to driving wheel.In addition, according to different operating modes, between internal stator and external stator double winding, also realize the transmission of direct electric energy by power conversion transposition.
Electric power module of the present invention comprises: the first power inverter, DC-DC conversion circuit, the second power inverter.First, second power inverter is respectively a power can the rectification/inverter of two-way flow, and DC-DC conversion circuit is a DC boosting/reducing transformer.First power inverter side is connected with external stator winding, and opposite side is connected with battery pack through DC-DC conversion circuit.Second power inverter side is connected with internal stator winding, and opposite side is directly connected with battery pack.In addition, battery pack, the first power inverter, DC-DC conversion circuit, the second power inverter are all connected with control unit, realize the detection of state, the exchange of data and real-time transfer control signal.
Operational mode of the present invention comprises:
1, cold start mode:
Battery pack 12 provides energy, and be passed to internal stator winding 4 through the second power inverter 10, internal rotor 3 rotates, and power-transfer clutch 2 combines, engine starting.
2, electric-only mode:
Battery pack 12 provides energy, and reach external stator 5 through DC-DC conversion circuit 9, first power inverter 8, outer rotor 6 drives wheel 15 to travel through main reduction gear 14.
3, hybrid mode:
This pattern is mainly used in the situation of the high-power travelings such as acceleration, climbing.The internal stator 4 of motor provides energy via the second power inverter 10, DC-DC conversion circuit 9, first power inverter 8 for external stator 5, and outer rotor 6 drives wheel 15 through main reduction gear 14.When the energy provided is lower than energy required for external stator 5, battery pack 12 supplements this energy differences through DC-DC conversion circuit 9, first power inverter 8.Meanwhile, at hybrid power run duration, internal stator 4 can according to the state of battery pack 12 (SOC) real time charging.
4, braking mode:
When car retardation or braking, wheel 15 drives outer rotor 6 through main reduction gear 14, and external stator 5 sends electric energy and charges to battery pack 12 through the first power inverter 8, DC-DC converter 9.The kinetic transformation of vehicle is the electric energy of battery pack 12.Whole power of driving engine 1 are through the second power inverter 10, charge to battery pack 12.
5, power generation in parking pattern:
This pattern mainly runs on the situation of battery pack 12 electricity deficiency.Driving engine 1 drives internal rotor 3 through power-transfer clutch 2, and internal stator 4 generates electricity and to charge to battery pack 12 through the second power inverter 10.
6, high speed cruise regime:
The energy that internal stator 4 provides is via the second power inverter 10, DC-DC conversion circuit 9, first power inverter 8 to external stator 5, and outer rotor 6 drives wheel 15 to travel through main reduction gear 14.This pattern mainly runs on cruising speed, if driving engine 1 provides energy to be greater than wheel 15 energy requirements, excess energy can be charged to battery pack 12 with electrical energy form.Bang path is: driving engine 1-power-transfer clutch 2-internal rotor 3-internal stator 4-the second power inverter 10-battery pack 12.
The present invention adopts compound flux switch permanent magnet motor as power distribution unit, and advantage applies exists: (1) only just can realize the operation scheme of several functions with a compound machine, structure is simple, takes up room little.(2) battery pack can absorb the deficiency of unnecessary engine power or supplementary engine power according to actual conditions, and driving engine is operated in efficient region always, and the operating efficiency of car load improves.
Claims (1)
1. a Hybrid Vehicle electronic stepless speed regulation system, comprise driving engine (1), power-transfer clutch (2), main reduction gear (14), wheel (15), it is characterized in that also comprising compound flux switch permanent magnet motor (7), electric power module (11), battery pack (12), control unit (13); Driving engine (1) connects the internal rotor (3) of compound flux switch permanent magnet motor (7) by power-transfer clutch (2), electric power module (11) is connected between the internal stator (4) of compound flux switch permanent magnet motor (7) and external stator (5), and internal stator (4) and the electric power module (11) of battery pack (12) and compound flux switch permanent magnet motor (7) are connected; The outer rotor (6) of compound flux switch permanent magnet motor (7) is connected with wheel (15) through main reduction gear (14); Control unit (13) is connected with driving engine (1), electric power module (11), battery pack (12) respectively;
Compound flux switch permanent magnet motor (7) is made up of internal rotor (3), internal stator (4), external stator (5), outer rotor (6), and internal stator (4) is connected as a whole with external stator (5) by magnetism-isolating loop;
Electric power module (11) comprises the first power inverter (8), DC-DC conversion circuit (9), the second power inverter (10), and the first power inverter (8) and the second power inverter (9) all possess biphase rectification, invert function; Battery pack (12) exports or stored energy through electric power module (11).
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| CN201210287861.3A CN102848897B (en) | 2012-08-13 | 2012-08-13 | A kind of Hybrid Vehicle electronic stepless speed regulation system |
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| CN104648111A (en) * | 2013-11-21 | 2015-05-27 | 扬州市新港电机有限公司 | Power driving and power generation integrated stepless speed regulating system of automobile |
| CN105896855A (en) * | 2016-04-08 | 2016-08-24 | 东南大学 | Stator permanent magnet-type double-mechanical port motor for extended-range electric vehicle and power assembly |
| CN110350620B (en) * | 2019-07-09 | 2022-03-15 | 青岛海研电子有限公司 | Low-power-consumption slip ring switching and holding device and switching and holding method |
| CN113746382B (en) * | 2021-08-16 | 2024-04-09 | 北京交通大学 | Hub permanent magnet motor control system for electric automobile and energy conversion control strategy thereof |
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| US7030528B2 (en) * | 2003-02-06 | 2006-04-18 | General Motors Corporation | Dual concentric AC motor |
| JP2007236057A (en) * | 2006-02-28 | 2007-09-13 | Jtekt Corp | Stator of motor |
| CN1937356B (en) * | 2006-09-15 | 2010-05-12 | 江苏大学 | Stator permanent-magnet double salient pole fault-tolerant motor |
| CN101633309A (en) * | 2009-09-01 | 2010-01-27 | 东南大学 | Series hybrid electric vehicle (SHEV) driving device and control method |
| CN202806426U (en) * | 2012-08-13 | 2013-03-20 | 东南大学 | Electronic stepless speed regulator for hybrid electric vehicle |
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