CN103997104A - Electric automobile wireless charging electric energy emission system and method - Google Patents
Electric automobile wireless charging electric energy emission system and method Download PDFInfo
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- CN103997104A CN103997104A CN201410156387.XA CN201410156387A CN103997104A CN 103997104 A CN103997104 A CN 103997104A CN 201410156387 A CN201410156387 A CN 201410156387A CN 103997104 A CN103997104 A CN 103997104A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
- B60L53/65—Monitoring or controlling charging stations involving identification of vehicles or their battery types
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
- B60L53/12—Inductive energy transfer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/20—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by converters located in the vehicle
- B60L53/22—Constructional details or arrangements of charging converters specially adapted for charging electric vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/30—Constructional details of charging stations
- B60L53/32—Constructional details of charging stations by charging in short intervals along the itinerary, e.g. during short stops
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/90—Circuit arrangements or systems for wireless supply or distribution of electric power involving detection or optimisation of position, e.g. alignment
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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
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
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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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
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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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
- Y02T90/167—Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S30/00—Systems supporting specific end-user applications in the sector of transportation
- Y04S30/10—Systems supporting the interoperability of electric or hybrid vehicles
- Y04S30/14—Details associated with the interoperability, e.g. vehicle recognition, authentication, identification or billing
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Current-Collector Devices For Electrically Propelled Vehicles (AREA)
Abstract
The invention discloses an electric automobile wireless charging electric energy emission system and method. The electric energy emission system comprises a DC source, an AC source, an emission circuit, a wireless electric energy emitter (2) and a driving battery (5). The DC source, the AC source, the emission circuit, the wireless electric energy emitter (2) and the driving battery (5) are successively connected in series; the input anode of the driving battery (5) is connected with the anode of a wireless electric energy receiver (4); and the input cathode of the driving battery (5) is connected with the cathode of the wireless electric energy receiver (4). The system and method provided by the invention make up for the disadvantage of wired charging of an electric automobile in the prior art. If the electric automobile wireless charging electric energy emission system is combined with road building, a function of charging the electric automobile during driving can be realized, the disadvantage of short driving distance due to insufficient battery power of the electric automobile is greatly alleviated, and the popularization and application of the electric automobile are greatly promoted.
Description
Technical field
The present invention relates to wireless charging field, especially a kind of electric automobile wireless charging electric energy emission system and method.
Background technology
Development of EV, is universally acknowledged alleviation energy shortage and the available strategy of environmental pollution, and seems most important for China.The consumption of petroleum of China of take is example, and within 2009, net oil import is approximately 2.04 hundred million tons, and import interdependency reaches 52%, far surpasses international warning line standard 35%.The last 1/3 that wherein fuel oil for vehicles consumption accounts for total consumption of petroleum.Therefore, exploitation, popularization alternative motor fuels and electric automobile, reduce fuel consumption, to alleviating China's environmental pollution, ensureing that energy security and supply and national sustainable development have important strategic importance
Along with being rooted in the hearts of the people and the rise of oil price of environmental protection concept, electric automobile is develop rapidly thereupon also, and the following prospect of using will be very extensive.But be limited by the storage capacity of charge efficiency, rechargeable battery, electric automobile does not obtain enough development.The principle of wireless charging is exactly well-known tesla's magnetic resonance inductance coupling high technology, i.e. galvanomagnetic effect.When electric automobile crosses the magnetic coil that is laid on highway track central authorities, first vehicle-mounted coil just obtains electric power, inputs immediately in battery, for automobile provides power endlessly.Wireless charging technology means and is no longer limited to electric wire, connector or contact point, and electric energy and data just can effectively be transmitted between electric equipment.Wireless charging technology is applied to electric automobile, and solves the technical problem existing in actual use, become the task of top priority.
Summary of the invention
The technical problem to be solved in the present invention has been to provide a kind of electric automobile wireless charging electric energy emission system and method, is electric automobile wireless charging, has solved the problem that electric automobile can not charge while walking.
The invention provides a kind of electric automobile wireless charging electric energy emission system, comprise DC power supply, AC power, radiating circuit, wireless power transmitter 2 and drive battery 5, described DC power supply, AC power, radiating circuit, wireless power transmitter 2 and driving battery 5 are connected in series successively, wherein, the input positive pole of described driving battery 5 is connected with the positive pole of described radio energy receiver 4, and the input negative pole of described driving battery 5 is connected with the negative pole of radio energy receiver 4.
Further, described wireless power transmitter 2 has common resonance frequency with described radio energy receiver 4, when the frequency of electromagnetic wave energy that provides when described wireless power transmitter 2 is identical with the resonance frequency of described radio energy receiver 4, can realize the highest conversion efficiency.。
Further, described system also comprises communication unit, and for communicating by letter with radio energy receiving system, described communication unit comprises telecommunication circuit and communication protocol, telecommunication circuit comprises analog-and digital-ping transmitter module, identification and configuration module and electric energy transmitting judge module; Communication protocol is for the communication between described analog-and digital-ping transmitter module, identification and configuration module and electric energy transmitting judge module.
The present invention also provides a kind of electric automobile wireless charging electric energy launching technique, comprise wireless power transmitter 2, radio energy receiver 4 and communication unit, described communication unit comprises analog-and digital-ping transmitter module, identification and configuration module and electric energy transmitting judge module, is characterized in that:
S1, wireless power transmitter 2 by analog pulse, radio energy receiver 4 detected;
The digit pulse of S2, wireless power transmitter 2 is the DTS of analog pulse, and make radio energy receiver 4 reply within a certain period of time a signal strength signal intensity bag, if this information strength is surrounded by effect, wireless power transmitter 2 can keep switching on and carrying out next step S3;
S3, radio energy receiver 4 send the packet that comprises customizing messages, wireless power transmitter 2 is carried out to identification, and provide identification and configuration information to wireless power transmitter 2;
S4, radio energy receiver 4 are to wireless power transmitter 2 number of transmission errors according to bag, to increase or to reduce electric power.Normal operation period, just sends described error information bag every about 250ms, and can send once every 32ms at large-signal During; In addition, at normal operation period, wireless power transmitter 2 can just send one time every 5 seconds electric power bag;
S5, radio energy receiver 4 can send " stopping a charging " message, or in duration, do not communicate for 1.25 seconds.Any one in two kinds of events all can allow wireless power transmitter 2 stop launching electric power bag, enters low power consumpting state, thereby realizes radio energy transmitting and interrupt.
Compared with prior art, electric automobile wireless charging electric energy emission system provided by the invention has made up the deficiency of the wired charging of electric automobile.If electric automobile wireless charging electric energy emission system is combined with road construction, can realize the function that electric automobile charges while walking, greatly alleviated electric automobile power battery not enough, the defect that operating range is short, will greatly promote applying of electric automobile.
Accompanying drawing explanation
Fig. 1 is electric automobile and charging structure schematic diagram;
Fig. 2 is wireless power transmitter enlarged diagram in Fig. 1;
Fig. 3 is radio energy receiver enlarged diagram in Fig. 1;
Fig. 4 is the structured flowchart of electric energy transmitting circuit;
Fig. 5 is the circuit diagram of supply and AC circuit;
Fig. 6 is the circuit diagram of radiating circuit;
Fig. 7 is the structured flowchart of electric energy receiving circuit;
Fig. 8 is the electrical block diagram that electric energy receives change-over circuit;
Fig. 9 is the electrical block diagram of charging circuit;
Figure 10 is the accommodation road schematic diagram that charges while walking in urban road;
Figure 11 is Zhong Bianzou limit, expressway charging accommodation road schematic diagram.
Embodiment
In November, 1914, First Chinese bar trolley bus (with the electric car of plait) circuit is open-minded in Shanghai, and crosses calmly a century nearly.Data demonstration, Shanghai trolley bus system peaked the phase in 1994, had at that time more than 20 of trolley line, 986 of commerial vehicles, handling capacity of passengers accounts for the more than 30% of urban district bus transportation total amount.Its operation scale is rank Asia first, third place in the world once.Preliminary orbit transport development is carried out in concession.Electric car cause is proposed to found to method concession public affairs Dong office by July, 1881 Shanghai British businessman delightful harmony foreign firm, although concession authorities think that lay a railway track stringing investment of tramcar is larger, but in view of its driving cost is low, passenger capacity large, take steadily comfortable advantage, determine to adopt, and set about research.The public Dong office in method in March, 1898 concession and public concession office of the Ministry of worker constitute jointly the electric car design committee, because designing difference, have no resolution.Electric car matters are handled respectively in rear two concessions, and public concession of in March, 1905 selected British businessman's Bruce Bi Boer company undertakes electric car engineering, and its exclusive right transfers British businessman Shanghai electric car company afterwards, on April 24th, 1907 public concession tramcar commencement of works.
Urban population surge and work, commercial size expand, and have promoted the development of urban public transport.At the bottom of nineteen twenty-seven, 22 of street railways have been warded off in urban district, and wherein British businessman is 11,7 of method business, 4 of Chinese businessman.Operation area to the east of outbeach, willow Pu, Xujiahui, Jing'an Monastery are supported in west, south gets Lu Jiawan, Gao Changmiao, northern and northern railway station, park, Hongkou.Average daily fortune visitor reaches 48.6 ten thousand person-times.The track that mind-set surrounding is extended in city and the tramcar shuttling back and forth on it, not only to Shanghai people brought walking along the street just, also transmitting city life rhythm fast.Until the middle and later periods nineties in last century, rise along with large-scale city infrastructure construction and road reformation engineering, the first backed off after random operation of the trolley buses such as 9 tunnels, 12 tunnels, 16 tunnels, 27 tunnels stage, once unique mistake trolley line tunnel, river five lines also changed automobile line into, although 18 tunnels, 21 tunnels have retained " designation ", there is no already the figure of trolley bus in fleet.At present, the trolley bus circuit in Shanghai is only left 10 left and right.Along with the high speed development of city traffic transportation, traditional trolley bus and tramcar, cover its historical mileage: tramcar path and the trolley bus pole line in some cities are removed in succession gradually.
At present, the passenger traffic in city, one of percentage, belongs to subway, and 99 percent, belong to the operation of conventional fuel oil passenger vehicle., the current energy faces exhaustion, and following passenger traffic faces collapse, and huge stream of people's whirlpool by what method turns round, and how this problem is tackled, and will be a very serious question of confronting.
Below in conjunction with accompanying drawing, the present invention will be further described in detail.
As shown in Figure 1,1 for being embedded in the power circuit under road surface, 2 for being hidden in the wireless power transmitter under road surface, 3 for covering the special line road surface above wireless power transmitter, 4 for being arranged on the radio energy receiver in electric automobile, 5 for electric automobile drives battery, and 6 is driving motor for electric automobile.
Power circuit 1 is connected with the wireless power transmitter 2 being hidden under road surface, beyond 3 spaces, special line road surface, place, bottom is connected with roadbed place beyond concealed space, the surface on 3 tops, special line road surface drives wheel contact (can not be connected) with electric automobile, wireless power transmitter 2 is fixed on the below on special line road surface 3, the positive pole of radio energy receiver 4 drives the input positive pole of battery 5 to be connected with electric automobile, the negative pole of radio energy receiver 4, drive the input negative pole of battery 5 to be connected with electric automobile, electric automobile drives the output cathode of battery 5 to be connected with the positive pole that is contained in the drive motors 6 on electric automobile hub, electric automobile drives the output negative pole of battery 5 to be connected with the negative pole that is contained in the drive motors 6 on electric automobile hub.
The operation principle of electric automobile wireless charging is: wireless power transmitter 2 is set up and communicated by letter by communication unit with radio energy receiver 4, and definite electric energy transmitting that starts, and in electric energy transmitting process, pass through communication unit transmission error packet, to determine the real needs of charging and to detect charged state.When charging demand is met or charges when abnormal, charging termination.
Fig. 2 is the enlarged diagram of wireless power transmitter 2, and electric power transfer direction is from wireless power transmitter 2 to radio energy receiver 4 all the time.The Key Circuit of wireless power transmitter 2 is for the primary winding to electric power receiver transferring electric power, drives the control unit of primary winding and the telecommunication circuit of demodulation primary winding voltage or electric current.Flexibility to wireless power transmitter 2 designs limits, and being intended to provides consistent electric power and voltage level to radio energy receiver 4.Wireless power transmitter 2 is connected to power supply.Standard compliant equipment coil has played the effect of a 50% duty ratio resonance oscillation semi-bridge, if the power that radio energy receiver 4 needs more or less, coil frequency can change, and specifically depends on power demand.
Fig. 3 is the enlarged diagram of radio energy receiver 4, and radio energy receiver 4, using an own compatible equipment as power transmitter, also provides configuration information simultaneously.When wireless power transmitter 2 starts delivery of electrical energy, radio energy receiver 4 just sends some error information bags to power transmitter, thereby requires electric energy more or less.When receiving " termination electric power " message, if or all do not receive above error information bag in 1.25 seconds, wireless power transmitter 2 is stopped power supply.While there is no electric power transfer, 2 of electric energy transmitters enter low-power consumption standby pattern.
Between wireless power transmitter 2 and radio energy receiver 4, except the circuit of electric energy transmitting, also have communication unit, comprise telecommunication circuit and communication protocol, for setting up communication, determine beginning, end and the transmission error packet etc. of delivery of electrical energy.Wireless power transmitter 2 has common resonance frequency with radio energy receiver 4, delivery of electrical energy is to need to see through the resonance frequency presetting to transmit, and the frequency of the electromagnetic wave energy that wireless power transmitter 2 provides need to be the conversion efficiency that the resonance frequency of receiver 4 just can obtain.By data transmission code or other identification active mode of standard, wireless power transmitter 2 need to correspond to correct radio energy receiver 4 could start power transmission.At any electric automobile that high or low power is different, as long as radio energy receiver 4 is housed, during by special charging road surface, radio energy receiver 4 on this car, will pass out own power demand signal from trend wireless power transmitter 2, wireless power transmitter 2 at once can be endlessly for this car provides electrical source of power, and this electric automobile will complete unlimited walking, thereby has also just completed the object of the invention.
As shown in Figure 4, the structured flowchart of electric energy transmitting circuit, comprises DC power supply, AC power, radiating circuit, wireless power transmitter 2, radio energy receiver 4 and drives battery 5.Wireless power transmitter 2, power management module, receive from AC power, or the current signal of DC power supply, it is carried out to transformation management, after by radiating circuit, enter wireless power transmitter 2, the current emission after transformation is received to 4 to radio energy, then enter driving battery, more then carry out drive motors.
As shown in Figure 5, the circuit diagram of supply and AC circuit.
As shown in Figure 6, the circuit diagram of radiating circuit, the main vibration circuit of radiating circuit adopts the active crystal oscillator of 2 MHz as oscillator.The square wave of active crystal oscillator output, through second-order low-pass filter filtering high order harmonic component, obtain stable sinewave output, the shunt-resonant circuit that exports coil and electric capacity composition after the Class C amplifying circuit of triode 13003 and peripheral circuit composition thereof to radiate, for receiving unit provides energy, effectively reach goal of the invention.
As shown in Figure 7, the structured flowchart of electric energy receiving circuit, comprises the wireless power transmitter 2 of wireless transmission electric energy, and the radio energy receiver 4 of wireless receiving electric energy receives change-over circuit, charging circuit and rechargeable battery.Radio energy receiver 4 receives after the electric energy of wireless power transmitter 2 wireless transmission, by receiving change-over circuit, electric energy is carried out to rectification, voltage stabilizing, then by charging circuit, passes to rechargeable battery.
As shown in Figure 8, electric energy receives the electrical block diagram of change-over circuit.
Electric energy receives the specific targets of change-over circuit, can be, the wire diameter of the hollow coupling coil of the shunt-resonant circuit forming with electric capacity is 0.5 mm, and diameter is 7 cm, and inductance is 47 uH, and carrier frequency is 2 MHz.According to parallel resonance formula, obtain matching capacitance C and be about 140 pF.Thereby radiating portion adopts the active crystal oscillator of 2MHz to produce the energy carrier frequency approaching with resonance frequency.
As shown in Figure 9, the electrical block diagram of charging circuit.
Radio energy receiver is a kind of driving charging device.The Key Circuit of radio energy receiver be secondary coil for receive electric power from wireless power transmitter, for change/rectification circuit, for by the electric current of not voltage stabilizing conversion through voltage stabilizing conversion electric power regulating circuit and for modulating the signal to the telecommunication circuit that conforms with secondary coil.Wireless power transmitter is responsible for its authentication and all of power requirement are communicated by letter, because radio energy receiver, with respect to wireless power transmitter (" stating " if), is one " listener ".
Although in order to allow it meet standard, the design of wireless power transmitter is limited, during design radio energy receiver, can there is more freedom.Can regulate the coil dimension of radio energy receiver, to meet the volume requirement of equipment, the coil voltage of radio energy receiver be carried out to full-wave rectification.Because the communication between two equipment is unidirectional, therefore, radio energy receiver is as " listener ".Inductance delivery of electrical energy by coupling once, is worked to the magnetic field of secondary coil.As long as the non-coupling magnetic line of force rotates around primary winding, and the magnetic line of force parasitic load that is not coupled, its just there will not be loss (such as: the eddy current loss of metal etc.).
Telecommunication circuit comprises analog-and digital-ping transmitter module, identification and configuration module and electric energy transmitting judge module.Communication protocol is for the communication between described analog-and digital-ping transmitter module, identification and configuration module and electric energy transmitting judge module.When radio energy receiver 4 is placed on above wireless power transmitter 2, typical boot sequence is as follows:
S1, wireless power transmitter 2 by analog pulse, radio energy receiver 4 detected.
The digit pulse of S2, wireless power transmitter 2 is the DTS of analog pulse, and make radio energy receiver 4 reply within a certain period of time a signal strength signal intensity bag, if this information strength is surrounded by effect, wireless power transmitter 2 can keep switching on and carrying out next step S3.
During S3, identification and configuration phase, radio energy receiver 4 sends the packet that comprises customizing messages, wireless power transmitter 2 is carried out to identification, and provide identification and configuration information to wireless power transmitter 2.
S4, at electric energy launching phase, radio energy receiver 4 is to wireless power transmitter 2 number of transmission errors according to bag, to increase or to reduce electric power.Normal operation period, just sends described error information bag every about 250ms, and can send once every 32ms at large-signal During.In addition, at normal operation period, wireless power transmitter 2 can just send one time every 5 seconds electric power bag.
S5, in order to stop electric energy transmitting, radio energy receiver 4 can send " stopping a charging " message, or in duration, does not communicate for 1.25 seconds.Any one in two kinds of events all can allow wireless power transmitter 2 stop launching electric power bag, enters low power consumpting state.Thereby realize wireless charging and power-off.
The realization of wireless charging technology, be unable to do without the cooperation between wireless power transmitter 2, radio energy receiver 4, telecommunication circuit and communication protocol.About the actual use of wireless power transmitter 2, be arranged on the accommodation road of city the function of charging while walking to realize electric automobile.
As shown in Figure 10, take eight tracks, city is example, Four-Lane Road northwards, and 1 track, the rightmost side is pavement (or bicycle lane); 1 track left side is 2 tracks, be electric automobile while walking charging track; 2 left side, tracks are 3 tracks, are slow lanes, and 3 left sides, track are 4 tracks, are fast traffic lane (overtaking lanes), and Four-Lane Road to the south is with northwards Four-Lane Road is symmetrical.Circle in the charging track while walking (2 track), represent to be embedded in the wireless power transmitter 2 under the table of road, spacing is 5 meters, and the reliable distance of the transmitting transmission of high-power wireless charging is at present 5 meters, along with the technical development of wireless power transmitter 2, can also expand again later.
As shown in Figure 1, power circuit 1 is connected with the wireless power transmitter 2 being hidden under road surface, beyond 3 spaces, special line road surface, place, bottom is connected with roadbed place beyond concealed space, the surface on 3 tops, special line road surface drives wheel contact (can not be connected) with electric automobile, wireless power transmitter 2 is fixed on the below on special line road surface 3, the positive pole of radio energy receiver 4 drives the input positive pole of battery 5 to be connected with electric automobile, the negative pole of radio energy receiver 4, drive the input negative pole of battery 5 to be connected with electric automobile, electric automobile drives the output cathode of battery 5 to be connected with the positive pole that is contained in the drive motors 6 on electric automobile hub, electric automobile drives the output negative pole of battery 5 to be connected with the negative pole that is contained in the drive motors 6 on electric automobile hub.
Shown in Fig. 1 and Figure 10, the electric automobile accommodation road of Zhong Bianzou limit, city charging can form.
After having had the wireless charging technology that can charge while walking, electric automobile is not only used in city, does the use of short distance or short time.
As shown in figure 11, central partition right side is 1 track, is minibus express lane (overtaking lane); 1 right side, track is 2 tracks, is minibus driving lane, and 2 right sides, track are 3 tracks, is passenger-cargo track, and 3 right sides, track are 4 tracks, is the electric automobile dedicated Lanes that charge while walking.Circle symbol in 4 tracks is to imbed road table wireless power transmitter 2 below, and reflector transmitting electric energy radius is 5 meters at present, is the wireless power transmitter of current more stable maximum power, and reflector spacing is 10 meters.
The expressway electric automobile special line technical scheme of charging while walking, is safest method, identical with the principle of wireless signal, utilizes during two electric power in coil transmit, and comprises data code and transmits together, and variable power system need be based upon in transfer of data.To the construction reformation of existing road, without destroying whole road surface, just slow lane is transformed,, Emergency Vehicle Lane is not made and is changed; If newly-built road can be planned charging accommodation road.Electric automobile is in high-speed dedicated lanes, do not exceed 5 meters about while overtaking other vehicles, and charging is remained valid.
Radio energy transmitting charging technique, is to utilize electromagnetic wave emission principle, and relevant alternating current impression technology, transmitting and receiving end/use corresponding coil, transmits and receives the AC signal that generation is responded to, and completes the technology that electric automobile charges while walking.Make distance travelled unlimited, effectively reached the object of the invention.
Above-mentioned various scene is only preferably execution mode of the present invention, not the present invention is done to any pro forma restriction, and protection scope of the present invention is not limited to this.Anyly be familiar with those skilled in the art in the technical scope that the present invention discloses, within making various distortion, supplement or replace and all belonging to protection scope of the present invention.
Claims (4)
1. an electric automobile wireless charging electric energy emission system, comprise DC power supply, AC power, radiating circuit, wireless power transmitter (2) and drive battery (5), described DC power supply, AC power, radiating circuit, wireless power transmitter (2) and driving battery (5) are connected in series successively, it is characterized in that, the input positive pole of described driving battery (5) is connected with the positive pole of described radio energy receiver (4), and the input negative pole of described driving battery (5) is connected with the negative pole of radio energy receiver (4).
2. system according to claim 1, it is characterized in that: described wireless power transmitter (2) has common resonance frequency with described radio energy receiver (4), when the frequency of electromagnetic wave energy that provides when described wireless power transmitter (2) is identical with the resonance frequency of described radio energy receiver (4), can realize the highest conversion efficiency.
3. system according to claim 1 and 2, it is characterized in that: described system also comprises communication unit, for communicating by letter with radio energy receiving system, described communication unit comprises telecommunication circuit and communication protocol, telecommunication circuit comprises analog-and digital-ping transmitter module, identification and configuration module and electric energy transmitting judge module; Communication protocol is for the communication between described analog-and digital-ping transmitter module, identification and configuration module and electric energy transmitting judge module.
4. an electric automobile wireless charging electric energy launching technique, comprise wireless power transmitter (2), radio energy receiver (4) and communication unit, described communication unit comprises analog-and digital-ping transmitter module, identification and configuration module and electric energy transmitting judge module, is characterized in that:
S1, wireless power transmitter (2) by analog pulse, radio energy receiver (4) detected;
The DTS that the digit pulse of S2, wireless power transmitter (2) is analog pulse, and make radio energy receiver (4) reply within a certain period of time a signal strength signal intensity bag, if this information strength is surrounded by effect, wireless power transmitter (2) can keep switching on and carrying out next step S3;
S3, radio energy receiver 4 send the packet that comprises customizing messages, wireless power transmitter (2) is carried out to identification, and provide identification and configuration information to wireless power transmitter (2);
S4, radio energy receiver (4) are to wireless power transmitter (2) number of transmission errors according to bag, to increase or to reduce electric power; Normal operation period, just sends described error information bag every about 250ms, and can send once every 32ms at large-signal During; In addition, at normal operation period, wireless power transmitter (2) can just send one time every 5 seconds electric power bag;
S5, radio energy receiver (4) can send " stopping a charging " message, or do not communicate in 1.25 seconds durations, any one in two kinds of events all can allow wireless power transmitter (2) stop launching electric power bag, enter low power consumpting state, thereby realize radio energy transmitting and interrupt.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420190982.0U CN204012874U (en) | 2014-04-18 | 2014-04-18 | A kind of electric automobile wireless charging electric energy emission system |
| CN201410156387.XA CN103997104A (en) | 2014-04-18 | 2014-04-18 | Electric automobile wireless charging electric energy emission system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420190982.0U CN204012874U (en) | 2014-04-18 | 2014-04-18 | A kind of electric automobile wireless charging electric energy emission system |
| CN201410156387.XA CN103997104A (en) | 2014-04-18 | 2014-04-18 | Electric automobile wireless charging electric energy emission system and method |
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| CN103997104A true CN103997104A (en) | 2014-08-20 |
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| CN201410156387.XA Pending CN103997104A (en) | 2014-04-18 | 2014-04-18 | Electric automobile wireless charging electric energy emission system and method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2016045580A1 (en) * | 2014-09-22 | 2016-03-31 | 拜山叶尔肯 | Method and system for charging electric vehicle |
| CN105539166A (en) * | 2016-01-11 | 2016-05-04 | 山东理工大学 | Wireless-charging pure-electric-vehicle power system |
| CN106891758A (en) * | 2017-01-23 | 2017-06-27 | 斑马信息科技有限公司 | Automobile wireless charging system and its charging service method |
| CN108631449A (en) * | 2018-05-10 | 2018-10-09 | 常州星宇车灯股份有限公司 | A kind of radio energy transmission system of automobile tail light |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204012874U (en) * | 2014-04-18 | 2014-12-10 | 河南速达电动汽车科技有限公司 | A kind of electric automobile wireless charging electric energy emission system |
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| CN204012874U (en) | 2014-12-10 |
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Application publication date: 20140820 |