Utility model content
The utility model, which needs to be parked in special charging station for existing electric vehicle static state wired charging method, could complete to fillThe problem of electricity, provides a kind of electric car dynamic radio charge control system.
To solve the above problems, the utility model is achieved through the following technical solutions:
A kind of electric car dynamic radio charge control system including the transmitting terminal on installation road surface and is mounted on electronic vapourReceiving end on vehicle.Above-mentioned transmitting terminal include energy power supply module, AC/DC changeover switch, electric energy preprocessing module, inverter module,Transformer, rectification module, Voltage stabilizing module, controller and multiple groups transmitting unit；The power input and alternating current of energy power supply moduleIt is connected, the power output end of energy power supply circuit is divided into two-way, wherein the power output end of energy power supply module is via friendship all the wayDirect current transducer connects the power input of electric energy preprocessing module, the power output end connection inversion electricity of electric energy preprocessing moduleThe power input in source；The power output end of another way energy power supply module connects rectification module power input via transformerEnd, the power input of the power output end connection Voltage stabilizing module of rectification module, the power output end of Voltage stabilizing module connect controlThe power input of device；Multiple groups transmitting unit is connected on the power output end of inverter circuit in parallel way；Every group of transmitting listMember includes transmitting coil, current transformer, program controlled switch and detection circuit；The power supply of one end connection inverter circuit of transmitting coilA wherein pole for output end, common end of the other end of transmitting coil via current transformer connection program controlled switch, program controlled switchA switching end be directly connected to inverter circuit power output end another pole, another switching end of program controlled switch is via spySurvey time road connects another pole of the power output end of inverter circuit；The signal of the signal output end connection controller of current transformerInput terminal, the control terminal of the signal output end connection program controlled switch of controller；All transmitting coils are laid on the ground, and along electricityElectrical automobile driving direction is arranged successively.Above-mentioned receiving end includes receiving coil, rectification module and charge control module；Receiving coilIt is mounted on the bottom of electric car；The power output end of receiving coil is defeated via the power supply of rectification module connection charge control moduleEnter end, the on-vehicle battery of the power output end connecting electric automobile of charge control module.
In above scheme, transmitting coil and receiving coil are multiturn planar spiral winding.
In above scheme, the geometric identity of transmitting coil and receiving coil.
In above scheme, the distance between every 2 adjacent transmission coils are less than the diameter of receiving coil.
In above scheme, detection circuit is to be formed by RC circuit by resistance and capacitor series connection.
In above scheme, the power input of energy power supply circuit is also further connect with solar panel.
Compared with prior art, the utility model has the following characteristics:
1, using magnetic coupling resonant radio energy transmission technology, so that vehicle stops without stroke to special charging stationCharging, as long as and normally travel can be realized on the road surface for be equipped with transmitting coil and carry out dynamic nothing to mobile electric carLine charge electricity；
2, free switching is carried out by inverter and controls transmitting coil, each moment only has single transmitting coil to be powered, sectionThe electric energy loss in charging process is saved, wireless charging efficiency is improved, guarantees the stability of electric car dynamic charging；
3, wireless dynamic charging modes avoid drawback present in traditional wire static state charging modes, can overcome traditional electricityThe short problem of electrical automobile endurance distance saves electric car and the charging pile round-trip deadhead kilometres that charge is gone to consume additional electricityEnergy.
4, it is long in the charging time of charging pile to solve the problems, such as electric car, and does not need manually to carry out during the charging processOperation, improves the convenience and charge efficiency of charging.
Specific embodiment
For the purpose of this utility model, technical solution and advantage is more clearly understood, below in conjunction with specific example, and joinAccording to attached drawing, the utility model is further described.
Referring to Fig. 1, a kind of electric car dynamic radio charge control system, including installing transmitting terminal and installation on road surfaceReceiving end on electric car.
Transmitting terminal includes energy power supply module, AC/DC changeover switch, electric energy preprocessing module, inverter module, transformer, wholeFlow module, Voltage stabilizing module, controller and multiple groups transmitting unit.The power input of energy power supply module is electrically connected with city, or sameWhen connect with alternating current and solar panel.The power output end of energy power supply circuit is divided into two-way, wherein the energy is powered all the wayPower input of the power output end of module via AC/DC changeover switch connection electric energy preprocessing module, electric energy preprocessing modulePower output end connection inverter power input.The power output end of another way energy power supply module is via transformerConnect rectification module power input, the power input of the power output end connection Voltage stabilizing module of rectification module, Voltage stabilizing modulePower output end connection controller power input.Multiple groups transmitting unit is connected to the power supply of inverter circuit in parallel wayOn output end.
The access of energy power supply module realization external communication electricity.What AC/DC changeover switch was used to access energy power supply moduleAlternating current is converted to direct current.Electric energy preprocessing module mainly improves electric energy, is corrected to alternating current power factor,Guarantee system input current phase is consistent with voltage-phase, reduces system harmonics content to the greatest extent, reduces the pollution to distribution system,Improve the security reliability of equipment.Since electric energy pretreatment circuit output voltage is higher, it cannot power, need directly to transmitting coilOutput voltage to be converted by inverter.In addition, alternating current is also sent into transformer by energy power supply module, through over commutation mouldBlock and Voltage stabilizing module power to controller.
Every group of transmitting unit includes transmitting coil, current transformer, program controlled switch and detection circuit.One end of transmitting coilA wherein pole for the power output end of inverter circuit is connected, the other end of transmitting coil connects program controlled switch via current transformerCommon end, a switching end of program controlled switch is directly connected to another pole of the power output end of inverter circuit, program controlled switchAnother switching end connects another pole of the power output end of inverter circuit via detection circuit.Wherein detection circuit is by resistanceRC circuit is formed by with capacitor series connection.The signal input part of the signal output end connection controller of current transformer, controllerSignal output end connection program controlled switch control terminal.
Program controlled switch is equivalent to a single-pole double-throw switch (SPDT), described in order to guarantee the quick unlatching of transmitting unitProgram controlled switch uses insulated gate bipolar transistor (IGBT) power switch.According to the sampling coil electricity of current transformer feedbackStream, controller, which issues corresponding switching signal, makes that transmitting coil powers on or switching is to detection circuit.When without receiving coil, visitSurvey time road forms RLC series circuit with transmitting coil.Current transformer is set between transmitting coil and program controlled switch, will be emittedThe current peak of coil is sent into the reference signal that controller judges as switching.When having receiving coil, program controlled switch switching is to inversePower transformation road, transmitting coil transmits energy to receiving coil at this time.
All transmitting coils are laid on the ground, and are arranged successively along electric automobile during traveling direction.Work as electric automobile during travelingTo between two adjacent transmission coils, the coupling with previous transmitting coil weakens, the coupling with the latter transmitting coil unitIt can enhance.At this point, receiving coil of the latter coil switching on detection circuit, vehicle can generate an excitation to transmitting coil,At this moment transmitting coil generates induced current.Rlc circuit only plays response to certain driving frequency, if RLC Series Circuit is to inductionWhen the frequency resonance of electric current, circuit is in purely resistive, detects faradic variation by current transformer, realizes to charge positionIdentification.The electric current that current transformer is detected connects sampling resistor and generates alternating voltage, then is sent to control by rectification, filteringDevice is input to controller compared with the threshold value of setting.If induced current is less than given threshold, illustrate that no receiving coil passes throughAbove transmitting coil；If induced current is greater than given threshold, switching signal can be sent to the program-controlled of corresponding transmitting unit by controllerUnit, program-controlled unit switching to inverter circuit, transmitting coil enters normal transmission state at this time.Only need real-time detection primary side lineLoop current peak value can be achieved with the identification to receiving coil on vehicle.Since probe power is much smaller than main transimission power, transmittingSmall-power capacity device may be selected in disconnected detection circuit.
Receiving end includes receiving coil, rectification module and charge control module.Receiving coil is mounted on the bottom of electric carPortion.Power input of the power output end of receiving coil via rectification module connection charge control module, charge control modulePower output end connecting electric automobile on-vehicle battery.The electric energy that rectification module receives receiving coil from transmitting terminal carries outHigh-frequency ac two is converted to DC quantity as battery power supply by rectification processing.When receiving end electric energy is after over commutation, need furtherIt is the electric energy for meeting electric car charging by DC conversion, the charge control module mainly turns the electric energy after rectificationDC voltage and current amount needed for turning to battery charging, is supplied to the on-vehicle battery of electric car, and from on-vehicle battery to electronicOther load cells on automobile are powered.
The critical component of transmitting coil and receiving coil as transmitting terminal and receiving end energy transmission, passes through magnetic coupling resonanceMode realizes wireless power transmission, and it is primary coil that transmitting coil is laid on the ground, and receiving coil is mounted on electric carBottom is secondary coil.In the present invention, transmitting coil and receiving coil are multiturn planar spiral winding, coil instituteThe shape of winding is determined by specific design requirement, it is contemplated that there is circular planar spiral coil more reliable coupled resonance to imitateFruit, in the preferred embodiment in the utility model, transmitting coil and receiving coil are circular planar spiral coil, and transmitting coilIt is identical with the size of receiving coil, size and shape.All transmitting coils are arranged successively along electric automobile during traveling directionIt is laid on the ground.The orderly parallel arrangement mode of transmitting coil ensure that the environment herein and non-intersection in coil intersectionMagnetic field environment is close.In order to guarantee the validity of wireless charging, need to guarantee the transmitting coil that charging section upper berth is setArrangement quantity, i.e., its total laying length of all transmitting coils need just to be able to satisfy electric car up to several kilometers or dozens of kilometresThe demand of charging.Further, since transmitting coil is using the mode individually opened, therefore realize charging free of discontinuities, Suo YoufaBy the way of ray circle is laid with using interval, and the distance between every 2 adjacent transmission coils are less than the diameter of receiving coil.
The utility model is by being laid with transmitting coil along road in electric automobile during traveling, when electric automobile during traveling to two phasesBetween adjacent transmitting coil, receiving coil and two adjacent transmitting coils on electric car form electromagnetic coupling.One excitationSource can be supplied to multiple transmitting coils, but only one transmitting coil of synchronization is connected, remaining coil then switching to detecting backRoad.When coil switching is to detection circuit, transmitting coil can generate induced current.Whether the induced current for detecting transmitting coil is bigIn the threshold value that setting is previously set, if not provided, illustrating that receiving coil does not pass through surface, switching transmitting coil does not carry out workMake.When electric car passes through first transmitting coil, coil is in normal operating conditions, and the receiving coil on electric car passesDelivery of energy amount, second transmitting coil is in detecting state at this time.After electric car receiving coil receives electric energy, by wholeDC quantity needed for current circuit and charge control module convert electrical energy into battery charging.When electric car leaves first transmittingWhen coil, the zero load of this transmitting coil is judged by detecting input direct-current electric current, switching to detection circuit, stops excitation again.WithThis simultaneously, there are infomation detection and display unit in electric car side, can will monitor each electrical quantity in receiving end and battery shape itselfState, and driver is fed back information to, to be adjusted according to the actual situation to charge control amount, improve battery charge efficiencyAnd extend battery life.
It should be noted that although the above embodiment described in the utility model be it is illustrative, this is not to thisThe limitation of utility model, therefore the utility model is not limited in above-mentioned specific embodiment.The utility model is not being departed fromIn the case where principle, the other embodiment that all those skilled in the art obtain under the enlightenment of the utility model is accordingly to be regarded asWithin the protection of the utility model.