CN102837592B - Hybrid Vehicle electronic stepless speed regulation system - Google Patents
Hybrid Vehicle electronic stepless speed regulation system Download PDFInfo
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- CN102837592B CN102837592B CN201210346044.0A CN201210346044A CN102837592B CN 102837592 B CN102837592 B CN 102837592B CN 201210346044 A CN201210346044 A CN 201210346044A CN 102837592 B CN102837592 B CN 102837592B
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Abstract
Based on a Hybrid Vehicle electronics stepless time adjustment system for combined switch reluctance motor, comprise driving engine, power-transfer clutch, combined switch reluctance motor, electric power module, battery pack, wheel drive system and control unit etc.The present invention owing to adopting combined switch reluctance motor as power distribution unit, both gearless, the again mechanical device such as brushless and slip ring, and without permanent-magnet material, loss is low, structure is simple, and reliability is high.System only adopts a motor just can realize the operation of various modes, and space availability ratio is high, and the poower flow path having two can independently control, substantially increase alerting ability and redundancy.Electronics stepless time adjustment system of the present invention, can make driving engine work in Effec-tive Function district always, effectively improve 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 fossil fuel, orthodox car industry is faced with baptism.Therefore, the new-energy automobile research and development of energy-conserving and environment-protective have become one of the strategic industry of countries in the world and the focus of domestic and international experts and scholars concern.As the one of new-energy automobile, hybrid vehicle relies on the remarkable advantage that its fuel economy is high, exhaust emissions is low, course continuation mileage is long to be shown one's talent, and obtains fast speed development.
Effectively realizing one of gordian technique of hybrid vehicle basic function is the performance-oriented electronic stepless speed regulation of research and development (electronically continuously variable transmission is called for short E-CVT) system.According to whether adopting mechanical gear, can by existing market and the E-CVT system that both at home and abroad experts and scholars extensively study be divided into two large classes: a class is the E-CVT system of employing mechanical gear (planetary wheel); Another kind of for there is no 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 the energy transmission regulating driving engine and be connected between the drive motor on automobile driving axle and distribution.The same with all mechanical gears, also there is the shortcoming of transmission loss and gear noise in planetary wheel, and human at periodic intervals must add lubricant to gear 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 connecting mode to overcome the problems referred to above.But the electronic stepless speed regulation system of this electrical connection also creates a new problem while overcoming planetary wheel shortcoming: the double-rotor machine adopted in system must utilize brush and slip ring to input or output electric energy from rotor.And brush and slip ring will produce extra loss, and need periodical maintenance, in addition, the heat dissipation problem being in innermost internal rotor in double-rotor machine is also an important bottleneck of this system practical application of restriction.Therefore, research and development one neither needs planetary wheel, does not also need brush and slip ring, and efficiency is high, it is convenient to control, stable new E-CVT system becomes a hot issue of current field of hybrid electric vehicles.
Summary of the invention
technical matters:the present invention proposes a kind of Hybrid Vehicle electronics stepless time adjustment system based on combined switch reluctance motor.This system both gearless, also brushless, slip ring and permanent magnet.Both solved the shortcoming that band gear power distribution unit exists transmission loss and gear noise, and solved again normal tape brush double-rotor machine system and produce excess loss, need the problem of periodical maintenance and non-easy heat radiation.In addition, owing to not adopting permanent-magnet material, permanent magnet high temperature therefore can be avoided to demagnetize cause series of problems, greatly improve the reliability of system.
technical scheme:a kind of Hybrid Vehicle electronics stepless time adjustment system of the present invention, comprise driving engine, power-transfer clutch, driver for vehicle, the electric power module, battery pack, the control unit that also comprise combined switch reluctance motor, are made up of internal stator side power inverter, DC-DC converter, external stator side power inverter; Driving engine is connected to the internal rotor of combined switch reluctance motor by power-transfer clutch, be connected between the internal stator winding of combined switch reluctance motor and external stator winding after the series connection of internal stator side power inverter, DC-DC converter and external stator side power inverter, battery pack is connected with internal stator side power inverter, DC-DC converter respectively; The outer rotor of combined switch reluctance motor is connected to wheel drive system, and control unit is connected with driving engine, internal stator side power inverter, DC-DC converter, external stator side power inverter, battery pack respectively.
Described combined switch reluctance motor is made up of internal rotor, internal stator, external stator, outer rotor, and internal stator and external stator are integrated as a whole by magnetism-isolating loop, and internal stator and external stator overlap respectively internal stator winding and external stator winding.
Described internal stator side power inverter, external stator side power inverter are the power inverter of biphase rectification, invert function, DC-DC converter is the changer of direct current lifting/voltage reducing function, battery pack is connected with motor by above power inverter, can store or export energy.
There are two independent power flow controlled in described combined switch reluctance motor, at a high speed, the internal rotor of motor is coupled with driving engine through power-transfer clutch, and the outer rotor of the outer motor of low speed is coupled with wheel drive system, and whole system does not exist permanent magnet.
Electric power module comprises internal stator side power inverter, DC-DC converter and external stator side power inverter.Wherein, internal stator side power inverter and external stator side power inverter all possess biphase rectification, invert function, internal stator side power inverter is connected with the internal stator winding of combined switch reluctance motor, and external stator side power inverter is connected with the external stator winding of combined switch reluctance motor; DC-DC converter possesses direct current lifting/voltage reducing function, and it is connected with external stator side power inverter with internal stator side power inverter respectively.
Battery pack on combined switch reluctance motor, carries out output or the storage of energy through electric power model calling.Wherein, battery pack one tunnel is connected directly to internal stator side power inverter, and DC-DC converter of separately leading up to is connected to external stator side power inverter.
Combined switch reluctance motor, its internal rotor and the interior motor of internal stator composition, outer rotor and the outer motor of external stator composition, inside and outside motor between the two circuit, magnetic circuit, hot road is completely independent, can control respectively.The internal rotor of interior motor is coupled with the driving engine of high-speed cruising through power-transfer clutch, and the outer rotor of outer motor is coupled with the wheel drive system of low cruise.
Three slewings on automobile: driving engine, E-CVT and wheel drive system height integrated, between driving engine and wheel drive system without direct mechanical link, with realize be electrically connected electronic stepless speed regulation system.
When working as power divider, the internal rotor of engine drive combined switch reluctance motor, by electromagnetic coupled effect, internal stator winding obtains electric power, this electric power will be divided into two parts, a part becomes the DC power transmission that matches with batteries charging voltage to battery pack by internal stator winding through the power inverter rectification of internal stator side, is stored in battery pack with the form of chemical power; Vdc is adjusted to the amplitude of applicable external stator winding again by another part electric power after internal stator side power inverter and DC-DC converter rectification first, by external stator side power converters, by electrical energy transfer in the external stator winding of combined switch reluctance motor, by electromagnetic coupled, make outer rotor Driving Torque and drive wheel with the form of mechanical energy.The size of above-mentioned two parts poower flow and direction can according to demand, by control unit reasonable distribution.
Wherein two kinds of topmost control policies are:
(1) when the electric power that the mechanical horsepower by driving engine is converted into combined switch reluctance motor internal stator exceedes the mechanical horsepower driven needed for wheel, control unit makes the electric power of internal stator in distribute energy after the power inverter of internal stator side, part electric power provides electric power through DC-DC converter, the external stator side outside stator winding of power inverter, then changes into the mechanical horsepower needed for vehicle traveling; The remaining electric power of another part then gives batteries charging, stores excess energy;
(2) when the electric power that the mechanical horsepower by driving engine is converted into combined switch reluctance motor internal stator is less than the mechanical horsepower driven needed for wheel, control unit makes the electric power of internal stator after the power inverter of internal stator side, all be sent to DC-DC converter and external stator side power inverter, and then be all delivered to external stator winding, control simultaneously battery pack through DC-DC converter and external stator side power inverter also outwards stator winding the electric energy lacked is provided, the electric energy of final external stator winding is delivered to outer rotor by electromagnetic coupled, vehicle is driven with the form of mechanical energy, energy now needed for vehicle traveling is provided jointly by battery pack and driving engine.
Except above-mentioned two kinds of main operation modes, by controlling the mode of operation of driving engine, combined switch reluctance motor and battery pack, also there are other mode of operations multiple, as cold start-up, high-performance cruise, regenerative braking etc.
beneficial effect:
1, the present invention's both gearless, again brushless and slip ring, substantially increases efficiency and the reliability of system, driving engine can be made always to be operated in efficient region, thus significantly improve the work efficiency of car load.
2, creativeness proposes a kind of design philosophy of combined switch reluctance motor, the switched reluctance machines that two platform independent control is integrated in a space, without winding and permanent magnet on its turning unit, the internal rotor of motor is coupled with the driving engine of high-speed cruising, and outer rotor is coupled with the wheel drive system of low cruise; Whole electric system is followed successively by rotor part, stator component and rotor part from inside to outside, this improves internal rotor in traditional double rotor electric machine and is difficult to dispel the heat thus cannot the technical bottleneck of practical application; Whole electric system does not need to use permanent magnet, enormously simplify structure, reduces cost, improve robustness, and the problem that there will not be high temperature to demagnetize; Combined switch reluctance motor has the multiple different number of phases, rotor teeth groove number fit system.
3, based on the E-CVT system of combined switch reluctance motor, can by three slewing (driving engines on automobile by ingehious design, E-CVT and wheel legacy system) highly integrated, realize the electronic stepless speed regulation system of electrical connection, there is the advantage of high power density, high efficiency, low noise and low vibration.It 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 application demand.
Accompanying drawing explanation
Fig. 1 is the topological structure block diagram of the Hybrid Vehicle electronics stepless time adjustment system based on combined switch reluctance motor of the present invention, comprising: driving engine 1, power-transfer clutch 2, combined switch reluctance motor 3, internal stator side power inverter 4, DC-DC converter 5, external stator side power inverter 6, battery pack 7, control unit 8, wheel drive system 9.
Fig. 2 is the horizontal sectional structure schematic diagram of combined switch reluctance motor of interior motor stator 12 grooves/rotor 8 pole adopted in the present invention, outer motor stator 12 grooves/rotor 8 pole, wherein have: internal rotor 31, internal stator 32, internal stator winding 33, magnetism-isolating loop 34, external stator 35, external stator winding 36, outer rotor 37.
Detailed description of the invention
Hybrid Vehicle electronics stepless time adjustment system based on combined switch reluctance motor of the present invention comprises as shown in Figure 1: driving engine 1, power-transfer clutch 2, combined switch reluctance motor 3, electric power module (internal stator side power inverter 4, DC-DC converter 5, external stator side power inverter 6), battery pack 7, control unit 8, wheel drive system 9 etc.Driving engine 1 is connected to the internal rotor 31 of combined switch reluctance motor 3 by power-transfer clutch 2, the internal stator winding 33 of combined switch reluctance motor 3 is through internal stator side power inverter 4, DC-DC converter 5, external stator side power inverter 6 is connected to the external stator winding 36 of combined switch reluctance motor 3, battery pack 7 respectively with internal stator side power inverter 4, DC-DC converter 5 is connected, the outer rotor 37 of combined switch reluctance motor 3 is connected to wheel drive system 9, control unit 8 respectively with driving engine 1, internal stator side power inverter 4, DC-DC converter 5, external stator side power inverter 6, battery pack 7 connects.
The combined switch reluctance motor 3 adopted in the present invention as shown in Figure 2 comprises internal rotor 31, the internal stator 32 around internal rotor 31, the magnetism-isolating loop 34 around internal stator 32, the external stator 35 around magnetism-isolating loop 34, the outer rotor 37 around external stator 35; Two are provided with air gap between rotor and stator; Internal rotor 31, outer rotor 37 are provided with the salient pole tooth without winding towards the side of air gap, internal stator 32 and external stator 35 are provided with salient pole tooth towards the side of air gap, and cover has internal stator winding 33 and external stator winding 36 respectively.Whole electric system is made up of inside and outside two independent rotors and an integrated stator, wherein integrated stator comprises internal stator 32, external stator 35 and magnetism-isolating loop 34 3 part, internal rotor 31 and the internal stator 32 of combined switch reluctance motor form interior motor, and outer rotor 37 and external stator 35 form outer motor.
The electric power module that the present invention proposes comprises: internal stator side power inverter 4, DC-DC converter 5, external stator side power inverter 6.Internal stator side power inverter 4 and external stator side power inverter 6 be respectively can the rectification of bi-directional power flow, inverter circuit, DC-DC converter 5 is a direct current lifting/voltage reducing circuit.One end of internal stator side power inverter 4 is connected with internal stator winding 33, and the other end is directly connected with battery pack 7; One end of external stator side power inverter 6 is connected with external stator winding 36, and the other end is connected with battery pack 7 through DC-DC converter 5.
Driving engine 1, internal stator side power inverter 4, DC-DC converter 5, external stator side power inverter 6, battery pack 7 are connected with control unit 8 respectively, realize the real-time transmission of the detection of state, the exchange of data and control signal.Wheel drive system proposed by the invention can comprise speed reduction gearing.
The electronic stepless speed regulation system that the present invention proposes comprises two-way independently poower flow: first via poower flow flows between motor, battery pack in driving engine, combined switch reluctance motor, the mechanical energy of driving engine passes to internal rotor, changing into electric energy through electromagnetic induction coupling is again input in internal stator winding, electric energy conversion, to battery pack, becomes chemical power to store by internal stator winding switching; Second road poower flow flows between the outer motor, wheel drive system of battery pack, combined switch reluctance motor, the chemical energy of battery pack becomes electrical energy transfer to external stator winding, change into mechanical energy through electromagnetic induction coupling again and be transported to outer rotor, then pass to wheel.In addition, according to different operating modes, also by the transmission of the power conversion functional realiey electric energy of electric power module between internal stator and the double winding of external stator.
The operational mode of the electronic stepless speed regulation system that the present invention proposes comprises:
1, cold start mode:
Battery pack 7 provides electric energy, is passed to internal stator winding 33 through internal stator side power inverter 4, by electromagnetic induction, internal rotor 31 is rotated, is combined with power-transfer clutch 2, makes driving engine 1 from static startup.Now, the interior machine operation of combined switch reluctance motor is at motoring condition, and outer motor does not work.
2, electric-only mode:
Battery pack 7 provides electric energy, is passed to external stator winding 36, by electromagnetic induction, outer rotor 37 is rotated, mechanical energy is sent to wheel drive system 9 through DC-DC converter 5, external stator side power inverter 6.Now, the interior motor of combined switch reluctance motor does not work, and outer motor is operated in motoring condition.
3, hybrid mode:
This pattern can be applied to the situation of the high-power operations such as acceleration, climbing.Driving engine 1 runs the internal rotor 31 that the mechanical energy produced coaxially passes to combined switch reluctance motor, the electric energy on internal stator winding 33 is converted into by electromagnetic induction, and then be passed on external stator winding 36 by internal stator side power inverter 4, DC-DC converter 5, external stator side power inverter 6, convert electrical energy into the mechanical energy on outer rotor 37 by electromagnetic induction again, finally pass to wheel drive system 9; When the energy that driving engine 1 provides is lower than energy needed for external stator, electric energy is passed to external stator winding 36, makeup energy difference by DC-DC converter 5, external stator side power inverter 6 by battery pack 7; When the energy that driving engine 1 provides is higher than energy needed for external stator, the unnecessary electric energy on internal stator winding charges to battery pack 7 through internal stator side power inverter 4.Now, the interior machine operation of combined switch reluctance motor is at generating state, and outer motor is operated in motoring condition.
4, braking mode:
Car retardation, braking and descending time, wheel drive system 9 drives outer rotor 37 to rotate, changes mechanical energy is electric energy by the outer motor of combined switch reluctance motor, charge to battery pack 7 by external stator side power inverter 6, DC-DC converter 5 again, the changes mechanical energy of vehicle is also stored in battery pack 7; Whole mechanical energy of driving engine 1 are converted into electric energy by motor in combined switch reluctance motor, charge, store with the form of chemical power through internal stator side power inverter 4 to battery pack 7.Now, the interior machine operation of combined switch reluctance motor is at generating state, and outer motor is also operated in generating state.
5, power generation in parking pattern:
This pattern mainly runs on the situation of battery pack 7 electricity deficiency, and driving engine 1 drives internal rotor 31 to rotate through power-transfer clutch 2, is electric energy by electromagnetic induction by changes mechanical energy, then charges to battery pack 7 through internal stator side power inverter 4.Now, the interior machine operation of combined switch reluctance motor is at generating state, and outer motor does not work.
It is pointed out that owing to needing when switched reluctance machines makes generator operation first to pass into exciting current, therefore, for ensureing the normal work of whole electronics stepless time adjustment system, must guarantee that the electric energy in battery pack 7 has remaining always, not being completely exhausted.
The present invention adopts combined switch reluctance motor as power distribution unit, and advantage applies exists:
(1) only just can realize several functions with a compound machine, control flexibly, 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;
(3) gearless, brushless and slip ring, without permanent magnet, whole system reliability is high, easy to maintenance, and efficiency is higher, has certain fault-tolerant ability.
Claims (2)
1. a Hybrid Vehicle electronics stepless time adjustment system, comprise driving engine (1), power-transfer clutch (2), driver for vehicle (9), it is characterized in that also comprising combined switch reluctance motor (3), the electric power module be made up of internal stator side power inverter (4), DC-DC converter (5), external stator side power inverter (6), battery pack (7), control unit (8); Driving engine (1) is connected to the internal rotor (31) of combined switch reluctance motor (3) by power-transfer clutch (2), be connected between the internal stator winding (33) of combined switch reluctance motor (3) and external stator winding (36) after internal stator side power inverter (4), DC-DC converter (5) and external stator side power inverter (6) series connection, battery pack (7) is connected with internal stator side power inverter (4), DC-DC converter (5) respectively; The outer rotor (37) of combined switch reluctance motor (3) is connected to wheel drive system (9), and control unit (8) is connected with driving engine (1), internal stator side power inverter (4), DC-DC converter (5), external stator side power inverter (6), battery pack (7) respectively;
Described combined switch reluctance motor (3) is made up of internal rotor (31), internal stator (32), external stator (35), outer rotor (37), and internal stator (32) is integrated as a whole by magnetism-isolating loop (34) with external stator (35), internal stator (32) and external stator (35) overlap respectively internal stator winding (33) and external stator winding (36);
Described internal stator side power inverter (4), external stator side power inverter (6) are the power inverter of biphase rectification, invert function, the changer that DC-DC converter (5) is direct current lifting/voltage reducing function, battery pack (7) is connected with combined switch reluctance motor (3) with DC-DC converter (5) by internal stator side power inverter (4), external stator side power inverter (6), can store or export energy.
2. Hybrid Vehicle electronics stepless time adjustment system according to claim 1, it is characterized in that, there are two independent power flow controlled in described combined switch reluctance motor (3), internal rotor (31) and internal stator (32) composition interior motor at a high speed, external stator (35) and the outer motor of outer rotor (37) composition low speed, at a high speed, the internal rotor (31) of motor is coupled with driving engine (1) through power-transfer clutch (2), the outer rotor (37) of the outer motor of low speed is coupled with wheel drive system (9), and there is not permanent magnet in whole system.
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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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 |
| CN104129314B (en) * | 2014-07-18 | 2017-03-01 | 成都宇能通能源开发有限公司 | A kind of employing switched reluctance machines are as the dynamical system of power transformer |
| CN105015318B (en) * | 2015-07-30 | 2017-11-17 | 江苏大学 | A kind of double-rotor machine planet gear type hybrid power system and Working mode switching method |
| DE102019121415A1 (en) * | 2019-08-08 | 2021-02-11 | Bayerische Motoren Werke Aktiengesellschaft | Hybrid vehicle with an internal combustion engine drive |
| CN112953346A (en) * | 2021-03-24 | 2021-06-11 | 中国矿业大学 | Multi-mode control method applied to double-stator switched reluctance motor of electric automobile |
| CN113364388B (en) * | 2021-06-15 | 2022-07-22 | 河北工业大学 | Drive reconstruction type circuit based on SRM and vehicle-mounted integrated charging and feeding system |
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| US5917248A (en) * | 1995-01-31 | 1999-06-29 | Denso Corporation | System and method for driving electric vehicle |
| CN101380889A (en) * | 2008-10-17 | 2009-03-11 | 东南大学 | Electric continuous speed regulation system of hybrid power automobile |
| CN102497075A (en) * | 2011-12-26 | 2012-06-13 | 北京理工大学 | Switched reluctance motor with dual-rotor structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7030528B2 (en) * | 2003-02-06 | 2006-04-18 | General Motors Corporation | Dual concentric AC motor |
| JP2010116101A (en) * | 2008-11-14 | 2010-05-27 | Toyota Central R&D Labs Inc | Power transmission device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5917248A (en) * | 1995-01-31 | 1999-06-29 | Denso Corporation | System and method for driving electric vehicle |
| CN101380889A (en) * | 2008-10-17 | 2009-03-11 | 东南大学 | Electric continuous speed regulation system of hybrid power automobile |
| CN102497075A (en) * | 2011-12-26 | 2012-06-13 | 北京理工大学 | Switched reluctance motor with dual-rotor structure |
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