CN100386221C - Construction method for electric car flying wheel battery auxiliary power system - Google Patents
Construction method for electric car flying wheel battery auxiliary power system Download PDFInfo
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- CN100386221C CN100386221C CNB2003101189987A CN200310118998A CN100386221C CN 100386221 C CN100386221 C CN 100386221C CN B2003101189987 A CNB2003101189987 A CN B2003101189987A CN 200310118998 A CN200310118998 A CN 200310118998A CN 100386221 C CN100386221 C CN 100386221C
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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Abstract
The present invention discloses a method for forming an auxiliary power supply system of a flywheel battery of an electric vehicle. An auxiliary power supply system of a flywheel battery of an electric vehicle is additionally provided with an auxiliary power supply of a flywheel battery on the basis of a main power supply of an electric vehicle; the auxiliary power supply of a flywheel battery is used for storing the regenerative braking feedback energy of the electric vehicle and assisting the main power supply in supplying electricity to an electric motor at the time of the acceleration or the grade climbing of the electric vehicle. The auxiliary power supply system is composed of a flywheel battery unit and a DC conversion DC/DC voltage regulator. The auxiliary power supply of a flywheel battery not only can extend the service life of the main power supply but also can use large discharge current to assist the main power supply in supplying electricity at the time of the acceleration of the electric vehicle due to the large power density of a flywheel battery. Thus, the acceleration performance of the electric vehicle is improved. The system has no need of greatly changing the principle and the structure of an original electric vehicle control system, so the technical innovation can be conveniently enforced. In addition, the present invention which has the characteristic of wide use can be used for electric vehicles such as electric automobiles, electric bicycles, electric tricycles, etc. Thus, the social benefits and the economic benefits are great.
Description
Technical field
The invention belongs to the Control of Drive for EV technical field, relate to a kind of with flying wheel battery as accessory feed and have the energy regeneration braking function and the construction method of the drive system of electric motor vehicle of short time rating enhanced feature, this system can be applicable to the electronlmobil field, also can further expand elec. vehicles such as being applied to battery-operated motor cycle, electro-tricycle, Electrical Bicycle.
Background technology
The restriction battery-driven car can widespread use a key factor be that its continual mileage is short, and regenerative brake is energy savings, the key that improves the electronlmobil continual mileage, have remarkable economical and be worth and social benefit, realize on a lot of test cars at home and abroad at present.Regenerative brake on the existing battery-driven car all is when car brakeing, makes machine operation in the electrical generator state, kinetic energy or gravitional force are converted into the electric energy feedback and are stored in the storage battery.
The major defect of this scheme is that the frequent glancing impact of vehicle can make storage battery charge continually, discharge, and can cause certain loss to battery, influences the life-span of battery.In addition, battery is as unique power supply of battery-driven car, vehicle quicken or climbing in, heavy-current discharge will appear in storage battery, to life-span of battery also be disadvantageous.
Summary of the invention
Defective and deficiency at above-mentioned prior art existence, the objective of the invention is to, a kind of construction method of electric vehicle flywheel battery auxiliary power system is provided, method of the present invention increases an accessory feed, i.e. flying wheel battery unit and DC/DC pressure regulator on the basis of electromobile battery main power source.Main power source provides battery-driven car to move required most of energy, battery-driven car regenerative brake feedback energy is stored in the flying wheel battery unit by pressure regulator, when vehicle quickened and climb, energy stored in the flying wheel battery unit is discharged pressure regulator and the main power source parallel connection is powered to motor.
Flywheel (Fiy-wheel) is as a kind of emerging energy-storage travelling wave tube (claiming flying wheel battery again), because advantages such as it is efficient, energy-conservation, long service life and non-environmental-pollution begin to cause people's attention.And along with the developing by leaps and bounds of new material technology, precise machine machining and Power Electronic Technique, the flywheel energy storage technology more and more demonstrates its huge preceence.Compare with other energy storage technology, flywheel as battery energy storage have high-energy-density, high-specific-power, high efficiency, pollution-free, applied widely, noiseless, long life, maintenance simple, can realize continuous working, can carry out advantage such as modular design manufacturing, be fit to very much be applied to instantaneous high-power, discharge and recharge frequent occasion.In 21 century, this energy storage technology will certainly bring a revolution to energy storage, shows the development prospect of green energy-storing technology.
To achieve these goals, the technical scheme that the present invention takes is: a kind of construction method of electric vehicle flywheel battery auxiliary power system, it is characterized in that, and make up by the following method:
1) a flying wheel battery unit at first is set on battery-driven car, is used to absorb battery-driven car regenerative brake feedback energy, and vehicle quickens or assist main power source to power to motor during climbing;
2) DC converting DC/DC pressure regulator is set, the main power source with flying wheel battery unit and former battery-driven car is connected with motor drive controller respectively;
3) on the circuit base of former electric vehicle control system, set up flying wheel battery cell voltage and current sensor, also need set up the pwm control signal that is used to control pressure regulator, make microprocessor can control discharging and recharging of main power source and flying wheel battery simultaneously;
Above-mentioned pressure regulator includes control circuit board, DC converting DC/DC changer; Control circuit board is by interface circuit and main power voltage sensor, mains current sensor; Electric moter voltage sensor, motor current sensor; Flying wheel battery cell voltage sensor, flying wheel battery cell current sensor, flying wheel battery unit tachogen, flying wheel battery Technics of Power Electronic Conversion cell operation state and PWM modulation signal; Das Gaspedal drives potential device and is connected with brake pedal stopping potential device;
Control circuit board is provided with microprocessor, and microprocessor can adopt devices such as micro controller system, DSP, and microprocessor is gathered voltage, current signal, acceleration pedal and brake pedal signal by filter circuit; The pwm signal of microprocessor output is through the action of photoelectric isolating device and each power device of driving circuit control DC converting DC/DC changer.
Flying wheel battery generally is made up of flywheel, axle, suspension bearing, motor, vacuum vessel and power electronic equipment.Vacuum vessel seals all mechanical parts except that power electronic equipment, does not almost have windage loss when flywheel and rotor rotate like this.When peripheral hardware was powered to motor by power electronic equipment, motor quickened to flywheel, stored energy; When flywheel applied torque to motor, motor was powered to peripheral hardware by power electronic equipment again.When the idle running of flywheel, whole device moves with minimal losses.Flywheel is the core component in the energy accumulation device for fly wheel, and it generally is made up of special synthetic material.Built-in one is the motor that electrical motor also serves as electrical generator in the energy accumulation device for fly wheel.When charging, it quickens to flywheel as electrical motor; When discharge, it is powered to peripheral hardware as electrical generator again, and motor commonly used has permanent magnetic brushless, three-phase brushless dc motor, reluctance motor and induction motor.Power electronic equipment is outside vacuum vessel, and it comprises power circuit and control circuit.The two-way inverter that power circuit is normally become by Metal-oxide-semicondutor type field effect transistor M OSFET or insulated gate bipolar transistor IGBT set of power switches is realized the input and output of energy by it.Control circuit is the input and output of control inverter not only, and whole device is played protection and control action.
The electric vehicle flywheel battery auxiliary power system that adopts method of the present invention to make up has following obvious advantage:
1) by flying wheel battery store electricity motor-car regenerative brake feedback energy, avoided frequent charge, discharged the adverse effect of battery-driven car main power source, because flying wheel battery is far longer than storage battery service life, so the life-span of electric vehicle power sources system is improved;
2) when vehicle quickens and climb, flying wheel battery assists main power source to provide part energy to motor, makes the discharge current value of main power source be unlikely to too big, thereby the life-span of main power source is improved;
3), can assist the main power source power supply with very big discharge current when vehicle quickens, so the acceleration capability of battery-driven car makes moderate progress because the flying wheel battery power density is big.
4) native system does not need former electric vehicle control system is carried out big change on principle and structure, only needs in the used operative sensor output signal Access Control circuit card of former control system technical application transformation easily.
5) native system uses extensively, can be used for elec. vehicles such as electronlmobil, battery-operated motor cycle, Electrical Bicycle, electro-tricycle.
Description of drawings:
Fig. 1 is a system construction drawing of the present invention;
Fig. 2 is a control circuit block diagram of the present invention;
Fig. 3 is a DC/DC changer regulator circuit principle schematic among the embodiment;
Fig. 4 is direction of current scheme drawing when battery-driven car drives among the embodiment;
Fig. 5 is a battery-driven car glancing impact direction of current scheme drawing among the embodiment.
The specific embodiment
Below in conjunction with the example that accompanying drawing and contriver provide, the present invention is described in further detail.
Referring to Fig. 1～5, according to technical scheme of the present invention, the technology path of present embodiment is: on former battery-driven car driving control system basis, set up a flying wheel battery auxiliary power system, this auxiliary power system is made up of flying wheel battery and DC/DC pressure regulator.
The DC/DC pressure regulator includes control circuit board and DC converting DC/DC changer; DC/DC changer part can adopt multiple widely used circuit, for example boost, buck, cuk changer and the various changers that combine thereof; Control circuit board is by interface circuit and main power voltage sensor, mains current sensor; Electric moter voltage sensor, motor current sensor; Flying wheel battery cell voltage sensor, flying wheel battery cell current sensor, flying wheel battery unit tachogen, flying wheel battery Technics of Power Electronic Conversion cell operation state and PWM modulation signal; Das Gaspedal drives potential device and is connected with brake pedal stopping potential device; The DC converting DC/DC changer of present embodiment partly adopts two-way, the step-up/step-down circuit of being made up of boost and buck circuit, as shown in Figure 4.
Control circuit board is provided with microprocessor, and microprocessor adopts DSP, gathers voltage, current signal, acceleration pedal and brake pedal signal by sample circuit; The pwm signal of DSP output is through the action of photoelectric isolating device and each power device of driving circuit control DC/DC changer; Photoelectric isolating circuit is realized by optocoupler; The required various level of controller are provided through common DC/DC Switching Power Supply by main power source.
Power device T1, T2, T3, T4 form two-way, buck-boost converter circuit, and wherein T1, T2 link to each other with the flying wheel battery unit, and T3, T4 link to each other with the positive and negative electrode of main power source respectively.Four power devices constantly only have one to be in the PWM mode of operation at each, wherein, form during T1 work and drive buck converter, form during T4 work and drive booster converter, form the braking booster converter during T2 work, form the braking buck converter during T3 work.Voltage, main power voltage and vehicle driving model when the flywheel rotating speed of the flying wheel battery unit that pressure regulator control circuit board microprocessor basis collects and flywheel are in the output services state are controlled the DC/DC changer and are in one of above-mentioned four kinds of mode of operations, the mode of operation of controlling the flying wheel battery unit simultaneously perhaps makes the flying wheel battery unit assist main power source to power to motor to realize the storage of vehicle regenerating braking energy to the flying wheel battery unit.
Flying wheel battery generally is made up of flywheel, axle, suspension bearing, motor, vacuum vessel and power electronic equipment.Vacuum vessel seals all mechanical parts except that power electronic equipment, does not almost have windage loss when flywheel and rotor rotate like this.When peripheral hardware was powered to motor by power electronic equipment, motor quickened to flywheel, stored energy; When flywheel applied torque to motor, motor was powered to peripheral hardware by power electronic equipment again.When the idle running of flywheel, whole device moves with minimal losses.Flywheel is the core component in the energy accumulation device for fly wheel, and it generally is made up of special synthetic material.Built-in one is the motor that electrical motor also serves as electrical generator in the energy accumulation device for fly wheel.When charging, it quickens to flywheel as electrical motor; When discharge, it is powered to peripheral hardware as electrical generator again, and motor commonly used now has permanent magnetic brushless, three-phase brushless dc motor, reluctance motor and induction motor.Power electronic equipment is outside vacuum vessel, and it comprises power circuit and control circuit.The two-way inverter that power circuit is normally become by Metal-oxide-semicondutor type field effect transistor M OSFET or insulated gate bipolar transistor IGBT set of power switches is realized the input and output of energy by it.Control circuit is the input and output of control inverter not only, and whole device is played protection and control action.
Electric vehicle motor is the permanent magnet brush DC machine, 20KW, rated voltage 120V; Main power source is composed in series by 10 joint 200AH lead-acid storage batterys; Power device adopts IGBT and corresponding driving circuit thereof; Used microprocessor adopts TI company's T MS320LF2407DSP; Voltage sensor adopts current mode 200V voltage sensor: current sensor adopts current mode 200A current sensor.The PWM modulating frequency is 20KHz; Acquisition of signal and control cycle are got 1ms; Adopt the PI control algorithm.
Concrete principle of work:
Battery-driven car quickens or climbing, and flying wheel battery unit output voltage is when being higher than 120v, and T2, T3, T4 turn-off, and T1 works in the PWM chopping modulation, realizes the driving decompression transformation of DC/DC changer, and the flying wheel battery unit assists main power source to power to motor.
Battery-driven car quickens or climbing, and flying wheel battery unit output voltage is when being lower than 120v, the T1 conducting, and T2, T3 turn-off, and T4 works in the PWM chopping modulation, realizes the driving boosting inverter of DC/DC changer, and the flying wheel battery unit assists main power source to power to motor.
During the battery-driven car regenerative brake, and when flying wheel battery unit output voltage was lower than 120v, T1, T2, T4 turn-offed, and T3 works in the PWM chopping modulation, realize the braking decompression transformation of DC/DC changer, battery-driven car regenerative brake feedback energy is stored in the flying wheel battery unit by the DC/DC changer.
During the battery-driven car regenerative brake, and when flying wheel battery unit output voltage is higher than 120v, the T3 conducting, T1, T4 turn-off, T2 works in the PWM chopping modulation, realize the braking boosting inverter of DC converting DC/DC changer, battery-driven car regenerative brake feedback energy is stored in the flying wheel battery unit by the DC/DC changer.
Claims (4)
1. the construction method of an electric vehicle flywheel battery auxiliary power system is characterized in that:
A flying wheel battery unit and power electronic equipment at first are set on battery-driven car, and wherein, the flying wheel battery unit is used to absorb battery-driven car regenerative brake feedback energy, and vehicle quickens or assist main power source to power to motor during climbing; Power electronic equipment is used to realize the input and output of energy; Control circuit is the input and output of control inverter not only, and whole device is played protection and control action;
The flying wheel battery unit comprises flywheel, axle, suspension bearing, motor, vacuum vessel and power electronic equipment, and vacuum vessel seals all mechanical parts except that power electronic equipment; When peripheral hardware was powered to motor by power electronic equipment, motor quickened to flywheel, stored energy; When flywheel applied torque to motor, motor was powered to peripheral hardware by power electronic equipment again; When the idle running of flywheel, whole device moves with minimal losses;
Power electronic equipment is outside vacuum vessel, and it comprises power circuit and control circuit; Wherein power circuit is to become two-way inverter by metal monooxide-semiconductor field effect transistor MOSFET or insulated gate bipolar transistor IGBT set of power switches.
Secondly, the DC converting pressure regulator is set, and this DC converting pressure regulator is connected with motor drive controller with the main power source of flying wheel battery unit and former battery-driven car respectively;
Above-mentioned DC converting pressure regulator includes control circuit board, DC converting DC/DC changer; Control circuit board drives potential device with main power voltage sensor, mains current sensor, electric moter voltage sensor, motor current sensor, flying wheel battery cell voltage sensor, flying wheel battery cell current sensor, flying wheel battery unit tachogen, flying wheel battery Technics of Power Electronic Conversion cell operation state and pulse-width modulation PWM modulation signal, Das Gaspedal respectively by interface circuit and is connected with brake pedal stopping potential device;
Once more, on the circuit base of former electric vehicle control system, set up flying wheel battery voltage and current sensor, set up the pulse-width modulation control signal that is used to control pressure regulator, also on control circuit board, have additional microprocessor, make microprocessor can control discharging and recharging of main power source and flying wheel battery simultaneously;
Above-mentioned microprocessor adopts micro controller system or digital processor DSP device, and microprocessor is gathered various voltages, current signal, acceleration pedal and brake pedal signal by sample circuit; The pulse-width modulation PWM signal of microprocessor output is through the action of photoelectric isolating device and each power device of driving circuit control DC converting DC/DC changer;
Four power device (T1 of DC/DC changer, T2, T3, T4) form two-way buck DC/DC converter circuit, power device (T1 wherein, T2) link to each other with the flying wheel battery unit, power device (T3, T4) respectively with main power source just, negative pole links to each other, four power devices constantly only have one to be in the PWM mode of operation at each, wherein, form during power device (T1) work and drive buck converter, form during power device (T4) work and drive booster converter, form the braking booster converter during power device (T2) work, form the braking buck converter during power device (T3) work; Voltage, main power voltage and vehicle driving model when the flywheel rotating speed of the flying wheel battery unit that the control circuit board microprocessor basis of pressure regulator collects and flywheel are in the output services state are controlled the DC/DC changer and are in one of above-mentioned four kinds of mode of operations, the mode of operation of controlling the flying wheel battery unit simultaneously perhaps makes the flying wheel battery unit assist main power source to power to motor to realize the storage of vehicle regenerating braking energy to the flying wheel battery unit.
2. the construction method of electric vehicle flywheel battery auxiliary power system as claimed in claim 1 is characterized in that, described main power source is a storage battery, and accessory feed is a flying wheel battery.
3. the construction method of electric vehicle flywheel battery auxiliary power system as claimed in claim 1, it is characterized in that electrical motor adopts common DC motor or permanent magnet brush DC machine or permanent-magnet brushless DC electric machine or permagnetic synchronous motor or switched reluctance machines or asynchronous dynamo.
4. the construction method of electric vehicle flywheel battery auxiliary power system as claimed in claim 2 is characterized in that, described storage battery is lead-acid storage battery or lithium ion battery or nickel-hydrogen accumulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNB2003101189987A CN100386221C (en) | 2003-12-22 | 2003-12-22 | Construction method for electric car flying wheel battery auxiliary power system |
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| CNB2003101189987A CN100386221C (en) | 2003-12-22 | 2003-12-22 | Construction method for electric car flying wheel battery auxiliary power system |
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| CN100386221C true CN100386221C (en) | 2008-05-07 |
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Families Citing this family (16)
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| CN1958328B (en) * | 2006-11-24 | 2010-05-12 | 丰日电气集团股份有限公司 | Electric automobile |
| JP5484302B2 (en) * | 2009-12-18 | 2014-05-07 | 住友重機械工業株式会社 | Battery inspection device |
| CN102075138B (en) * | 2011-01-21 | 2014-04-16 | 深圳飞能能源有限公司 | Charging and discharging control system and method of flywheel battery |
| CN102616149A (en) * | 2011-01-28 | 2012-08-01 | 深圳飞能能源有限公司 | Urban passenger car driven by flywheel battery |
| CN103199567A (en) * | 2012-01-04 | 2013-07-10 | 韩明亮 | Power supply system of electric vehicle |
| CN103199568A (en) * | 2012-01-04 | 2013-07-10 | 韩明亮 | Charging station system |
| CN202978313U (en) * | 2012-10-29 | 2013-06-05 | 恩力能源科技（南通）有限公司 | Charge-discharge control circuit |
| CN104340080A (en) * | 2013-08-07 | 2015-02-11 | 江苏锋华车辆科技有限公司 | Electromobile driving system with flywheel energy storage device |
| CN104309483B (en) * | 2014-09-02 | 2017-04-12 | 富华德电子有限公司 | Power supply system for electric vehicle |
| PE20181391A1 (en) * | 2015-05-28 | 2018-09-07 | Joy Global Longview Operations Llc | SYSTEMS, METHODS AND APPARATUS FOR STORAGE IN A MINING EXPLOITATION MACHINE |
| CN105162371A (en) * | 2015-10-09 | 2015-12-16 | 武汉市深蓝动力科技有限公司 | Motor drive system and method for inhibiting torque pulsation of switch reluctance motor |
| CN105774565A (en) * | 2016-03-01 | 2016-07-20 | 西南交通大学 | Novel braking device of rail vehicle |
| CN106143191A (en) * | 2016-07-10 | 2016-11-23 | 安庆新景技电子科技有限公司 | A kind of power supply on vehicle system |
| CN109760520A (en) * | 2019-03-26 | 2019-05-17 | 山东理工大学 | A kind of electromechanics flywheel hybrid power system |
| CN111976448A (en) * | 2020-08-28 | 2020-11-24 | 北京泓慧国际能源技术发展有限公司 | Electric drive loader power system, power control method and electric drive loader |
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