CN104348235A - System for wireless charging of electric vehicle by photovoltaic-storage battery microgrid - Google Patents

System for wireless charging of electric vehicle by photovoltaic-storage battery microgrid Download PDF

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Publication number
CN104348235A
CN104348235A CN201410697361.6A CN201410697361A CN104348235A CN 104348235 A CN104348235 A CN 104348235A CN 201410697361 A CN201410697361 A CN 201410697361A CN 104348235 A CN104348235 A CN 104348235A
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CN
China
Prior art keywords
photovoltaic
charging
storage battery
electric automobile
control strategy
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Pending
Application number
CN201410697361.6A
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Chinese (zh)
Inventor
肖朝霞
刘杰
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Tianjin Polytechnic University
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Tianjin Polytechnic University
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Priority to CN201410697361.6A priority Critical patent/CN104348235A/en
Publication of CN104348235A publication Critical patent/CN104348235A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • H02J7/022Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters characterised by the type of converter
    • H02J7/025Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters characterised by the type of converter using non-contact coupling, e.g. inductive, capacitive

Abstract

The invention belongs to the field of research and application of combining of multiple disciplines of microgrids, wireless electric energy transmission technologies and electric automobile charging, and particularly provides a control system for wireless charging of an electric automobile by using a photovoltaic-storage battery microgrid. A method with a photovoltaic-storage battery reasonable control strategy and an electric automobile vehicle-mounted battery charging control strategy is provided. The whole charging system consists of three parts, namely a photovoltaic-storage battery microgrid system (a), a resonance type wireless electric energy transmission system (b) and an electric automobile charging system (c), wherein the photovoltaic-battery microgrid system is used for providing stable electric energy for a wireless electric energy transmission part through the control strategy, the resonance type wireless electric energy transmission system is used for converting the current in the photovoltaic-battery microgrid system (a) into the high-frequency voltage by a DC/AC (direct current/alternating current) high-frequency converter, and sending the energy from the transmitting end to the receiving end, and the electric automobile charging system is used for changing the received high-frequency voltage into the direct current by the AC/DC converter, and charging through a DC/DC (direct current/direct current) controller according to the vehicle-mounted charging requirement. The system has the advantage that by reasonably controlling the whole system, the whole system can run in a stable and high-efficiency way.

Description

Photovoltaic-storage battery micro-capacitance sensor is wireless charging system for electric automobile
Technical field
The invention belongs to micro-capacitance sensor, wireless power transmission technology, the multidisciplinary research and apply field combined of charging electric vehicle.Be specifically related to a kind of control system utilizing photovoltaic-storage battery to be charging electric vehicle by wireless power transmission mode.
Background technology
Electric automobile (Electric Vehicles, be called for short EV) is as accelerating energy transition, realizing the important channel of low-carbon economy, and cause the attention of more and more national, the electrification of automobile is the inexorable trend of future development.But charging electric vehicle problem is one of critical problem of restriction Development of Electric Vehicles always.First, traditional charging electric vehicle adopts charging pile or charging station to carry out wired connection (namely cable is connected) by wire and electrical network usually, obtaining electric energy from electrical network is that electric automobile carries out normal charge, quick charge and changes electricity, but wired charging modes exists and easily produces spark, easy to wear, the not drawback such as easy care, underaction; Secondly, large-scale electric automobile access electrical network will certainly have an impact to the safety of electrical network, and according to the energy utilization situation of China's electric power system, by electrical network to charging electric vehicle, the carbon emission amount produced is lower unlike conventional fuel oil automobile, and is also difficult to reduce the dependence to conventional fossil fuel.
Therefore, microgrid combines with wireless charging technology and is applied in charging system for electric automobile by the present invention, effectively can reduce the impact of charging electric vehicle to electrical network, solve the series of problems that wired charging brings simultaneously.The present invention provides new method by the power supply of electric automobile and charging modes, effectively promotes that the development of electric automobile is with universal.
Summary of the invention
The present invention answers the demand of charging electric vehicle just, for above problem, proposes a kind of photovoltaic-storage battery micro-capacitance sensor that utilizes and carries out the control system of wireless charging for electric automobile.There is provided a kind of by the conservative control strategy of photovoltaic-storage battery and the method for electric automobile vehicle mounted electric pond charging control strategy, reach and make whole system be in stable, efficient running status.
For this reason, the present invention adopts following technical scheme: photovoltaic-storage battery micro-capacitance sensor is wireless charging system for electric automobile, whole charging system is made up of three parts, comprise: (a) photovoltaic-storage battery micro-grid system, by control strategy for wireless power transmission part provides stable electric energy; B () resonance type wireless electric energy transmission system, becomes high frequency voltage by the direct current in (a) by DC/AC high-frequency inverter, by radio energy transmission system, energy is passed to receiving terminal from transmitting terminal; C () charging system for electric automobile, becomes direct current by the high frequency voltage received through AC/DC, require to charge according to charging on-vehicle battery through DC/DC controller.
Specifically, there is following technology beneficial effect:
1) owing to adopting contactless transmission electric energy, compensate for the drawback that tradition directly contacts supply power mode;
2) employing micro-capacitance sensor effectively reduces the threat that extensive charging electric vehicle produces electrical network;
3) on-site elimination can be carried out to new forms of energy simultaneously, accomplish real ' zero discharge;
4) the economy and environment benefit improving energy resource system overall operation is contributed to.
Accompanying drawing explanation
Fig. 1 is micro-capacitance sensor is wireless charging system for electric automobile entire block diagram
Fig. 2 is entire system control flow chart.
Fig. 3 photovoltaic-storage battery MPPT control strategy structure chart.
Fig. 4 electric automobile vehicle mounted electric pond charging control strategy.
Embodiment
Fig. 1 is micro-capacitance sensor is wireless charging system for electric automobile entire block diagram, and Fig. 2 is its corresponding entire system control flow chart.Wherein photovoltaic-storage battery micro-grid system is as shown in Fig. 1 (a), and this system adopts clean and effective, settles photovoltaic and Combined storage battery easily, therefore effectively can solve the impact that photovoltaic generation power is subject to illumination and variations in temperature.Photovoltaic system is directly connected with DC bus, and storage battery is connected in parallel on DC bus by two-way DC/DC, and the maximal power tracing of photovoltaic and accumulator cell charging and discharging are completed by the DC/DC of storage battery side, and the controller of employing as shown in Figure 3.When electric automobile charges by day, using the reference voltage that photovoltaic maximal power tracing voltage Vmpp boosts as DC/DC, by the collaborative work of photovoltaic and storage battery, make photovoltaic maximum power output.Night, when charging, electric automobile only adopted charge in batteries.The optimal design of dispatch coil is the core of electric automobile radio energy transmission system design, directly decides the success or not of wireless power transmission and power, the efficiency of transmission.Demand fulfillment during design: keep identical natural resonance frequency; There is higher Q value.Therefore wireless power transmission part 1 (b) adopts SS type circuit topological structure, it has resonance frequency not by the impact of source, secondary coupling coefficient, and more easily realizes the feature of high power transmission.Charging system for electric automobile is as shown in Fig. 1 (C), this part and wireless reception coil are all placed on electric automobile, the high frequency voltage rectification received, filtering transformation are become direct current by AC/DC module, finally by DC/DC controller needing for on-vehicle battery carries out constant voltage fast or at a slow speed or constant current charge according to on-vehicle battery.According to charging on-vehicle battery characteristics design control strategy main control strategies as shown in Fig. 4 (a).Constant current controlling (Fig. 4 (b)) is adopted when on-vehicle battery port voltage is lower, along with on-vehicle battery electric energy increases, charged state (SOC) changes, on-vehicle battery port voltage raises, when reaching the on-vehicle battery rated voltage of 95%, be converted to constant voltage charging figure (4 (c)) by constant current charge.When on-vehicle battery voltage reaches its maximum voltage and charging current is less than its minimum current, charge in batteries is full, stops charging.

Claims (4)

1. propose a kind of photovoltaic one storage battery micro-capacitance sensor that utilizes and carry out the control system of wireless charging for electric automobile.There is provided a kind of by the conservative control strategy of photovoltaic-storage battery and the method for electric automobile vehicle mounted electric pond charging control strategy, reach and make whole system be in stable, efficient running status.
2. photovoltaic according to claim 1-storage battery micro-capacitance sensor is the control system that electric automobile carries out wireless charging, can reach and make whole system be in stable, efficient running status.
3. the conservative control strategy to photovoltaic-storage battery according to claim 1, adopt MPPT control strategy, using the reference voltage that photovoltaic maximal power tracing voltage Vmpp boosts as DC/DC, by the collaborative work of photovoltaic and storage battery, make photovoltaic maximum power output.
4. charging control strategy in electric automobile vehicle mounted electric pond according to claim 1, along with on-vehicle battery electric energy increases, charged state (SOC) changes, on-vehicle battery port voltage raises, when reaching the on-vehicle battery rated voltage of 95%, being converted to constant voltage by constant current charge and charging.
CN201410697361.6A 2014-11-24 2014-11-24 System for wireless charging of electric vehicle by photovoltaic-storage battery microgrid Pending CN104348235A (en)

Priority Applications (1)

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CN201410697361.6A CN104348235A (en) 2014-11-24 2014-11-24 System for wireless charging of electric vehicle by photovoltaic-storage battery microgrid

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Application Number Priority Date Filing Date Title
CN201410697361.6A CN104348235A (en) 2014-11-24 2014-11-24 System for wireless charging of electric vehicle by photovoltaic-storage battery microgrid

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105826987A (en) * 2016-05-27 2016-08-03 上海电力学院 Wireless charging system for moving electric vehicles based on solar generation
CN106541845A (en) * 2016-11-25 2017-03-29 上海工程技术大学 A kind of wireless electric automobile charging system actual and control method
CN106996206A (en) * 2017-05-26 2017-08-01 浙江省能源与核技术应用研究院 A kind of solar energy radio discharge and recharge car shed system
CN109963372A (en) * 2017-12-22 2019-07-02 比亚迪股份有限公司 Solar LED driving device and solar street light
CN111055701A (en) * 2019-12-23 2020-04-24 东华大学 Electric automobile wireless charging system based on microgrid

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2383264Y (en) * 1998-11-11 2000-06-14 浙江工业大学 Quick charger for high performance lead-acid free maintenance accumulator
EP2434610A2 (en) * 2010-09-27 2012-03-28 Deere & Company Electrical power transfer station, system and method
CN102427266A (en) * 2012-01-04 2012-04-25 广东易事特电源股份有限公司 Multifunctional photovoltaic UPS (uninterruptible power supply) system and control method thereof
CN104037897A (en) * 2014-06-27 2014-09-10 天津工业大学 Electric automobile wireless charging system design based on micro-grid

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2383264Y (en) * 1998-11-11 2000-06-14 浙江工业大学 Quick charger for high performance lead-acid free maintenance accumulator
EP2434610A2 (en) * 2010-09-27 2012-03-28 Deere & Company Electrical power transfer station, system and method
CN102427266A (en) * 2012-01-04 2012-04-25 广东易事特电源股份有限公司 Multifunctional photovoltaic UPS (uninterruptible power supply) system and control method thereof
CN104037897A (en) * 2014-06-27 2014-09-10 天津工业大学 Electric automobile wireless charging system design based on micro-grid

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105826987A (en) * 2016-05-27 2016-08-03 上海电力学院 Wireless charging system for moving electric vehicles based on solar generation
CN106541845A (en) * 2016-11-25 2017-03-29 上海工程技术大学 A kind of wireless electric automobile charging system actual and control method
CN106996206A (en) * 2017-05-26 2017-08-01 浙江省能源与核技术应用研究院 A kind of solar energy radio discharge and recharge car shed system
CN109963372A (en) * 2017-12-22 2019-07-02 比亚迪股份有限公司 Solar LED driving device and solar street light
CN109963372B (en) * 2017-12-22 2020-09-15 比亚迪股份有限公司 Solar LED driving device and solar street lamp
CN111055701A (en) * 2019-12-23 2020-04-24 东华大学 Electric automobile wireless charging system based on microgrid

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Application publication date: 20150211