CN205489724U - Wireless charging device of electronic automobile - Google Patents
Wireless charging device of electronic automobile Download PDFInfo
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- CN205489724U CN205489724U CN201620237881.3U CN201620237881U CN205489724U CN 205489724 U CN205489724 U CN 205489724U CN 201620237881 U CN201620237881 U CN 201620237881U CN 205489724 U CN205489724 U CN 205489724U
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Abstract
The embodiment of the utility model discloses wireless charging device of electronic automobile, including connecting at power frequency power supply's transmitting terminal and the receiving terminal that links to each other with the load, the receiving terminal includes the switch matrix unit, and the feedback of switch matrix unit is as the 2nd the control unit's input, and the switch matrix unit includes a plurality of parallelly connected switch tubes mutually, the different switch tubes of the 2nd the control unit control switch on the inductance value that changes the receiving coil unit. The embodiment of the utility model provides a through setting up the switch matrix unit at the receiving terminal, the inductance value of the 2nd the control unit through controlling switching on of different switch tubes and changing the receiving coil unit to improve this wireless charging device of electronic automobile's output and transmission efficiency, and have from adaptability strong, the advantage of dynamic adjustment wide range. In addition, all adopt a loop construction in transmitting coil unit and the receiving coil unit to reduce this wireless charging device of electronic automobile's volume, miniaturize, integrate so that realize.
Description
Technical field
This utility model relates to wireless charging technical field, particularly relates to a kind of wireless electric vehicle charging device.
Background technology
Along with resource exhaustion and the aggravation of environmental pollution, automobile is as one of primary pollution source, and while bringing convenience to people's life, the pollution of environment also be can not be ignored by it.In order to reduce the automobile pollution to environment, electric automobile application in people live is more and more extensive, and solution energy problem and environmental problem tool are very helpful by the popularization of electric automobile.The mode using wireless charging is significant to the popularization of electric automobile.
At present, the receiving terminal of wireless electric vehicle charging device is arranged on vehicle bottom, and its transmitting terminal is arranged on ground or is embedded in below ground, and when transmitting terminal and receiving terminal position relative to time just can be charged for electric automobile.But in this wireless charging mode, there are the following problems: one, the bottom level of different model electric automobile is different, and the distance thus resulted between transmitting terminal and receiving terminal is not fixed；Two, when deviation occurs in parking spot, causing transmitting terminal to occur bigger error with receiving terminal relative to position, the two problem all can have a strong impact on Wireless transceiver efficiency.Additionally, existing transmitting terminal is provided with transmitting coil and transmitting terminal amplifies coil, receiving terminal is correspondingly arranged on receiving coil and receiving terminal amplifies coil, and it is big that this wireless electric vehicle charging device being configured with four kinds of coils exists volume, problem the most easy of integration.
Therefore, a kind of output is big, efficiency of transmission is high, adaptive ability is strong and the wireless electric vehicle charging device of miniaturization for current urgent need.
Utility model content
A kind of output is big, efficiency of transmission is high, adaptive ability is strong and the wireless electric vehicle charging device of miniaturization for the offer of this utility model embodiment.
This utility model embodiment provides a kind of wireless electric vehicle charging device, and this wireless electric vehicle charging device includes the transmitting terminal being connected to power frequency supply and the receiving terminal being connected with load；Described transmitting terminal includes capability correction unit, inversion unit, transmitting coil unit, the first communication unit, the first control unit and driver element；Capability correction unit, inversion unit and transmitting coil unit sequential series successively connect；The input of capability correction unit connects power frequency supply；First communication unit and the first control unit are connected in series；The feedback signal of driver element is as the input of the first control unit, and the first control unit controls driver element simultaneously；Drive unit drives inversion unit；Described receiving terminal includes receiving coil unit, switch arrays unit, synchronous rectification unit, boosting inverter unit, the second communication unit and the second control unit；Receiving coil unit, synchronous rectification unit, boosting inverter unit sequential series successively connects；The output of boosting inverter unit connects load；Second communication unit and the second control unit are connected in series；The output of the second control unit controls boosting inverter unit and synchronous rectification unit；The feedback signal of load is as the input of the second control unit；The feedback of switch arrays unit is as the input of the second control unit, and the second control unit controls switch arrays unit simultaneously；Switch arrays unit includes some switching tubes being in parallel, and is changed the inductance value of described receiving coil unit by the conducting of the described second different switching tube of control unit control；Described first communication unit and the second communication unit are communicated by wireless signal；Described transmitting coil unit includes transmitting coil and the first compensation electric capacity being in series with described transmitting coil, and described transmitting coil is embedded in underground or places on the ground；Described receiving coil unit includes receiving coil and second repays electric capacity with described receiving coil is in series, and described receiving coil is fixed on the bottom of electric automobile.
Preferably, magnetic coupling resonance is used to carry out wireless power transmission between described transmitting coil and described receiving coil.
Preferably, described switch arrays unit includes the first pass open pipe, the second pass open pipe and the SAN GUAN open pipe being in parallel, the two ends of described receiving coil are connected respectively wire and the first switching tube, second switch pipe and the 3rd switching tube and are connected respectively the diverse location at described receiving coil.
Preferably, described first communication unit and the second communication unit all use 2.4G wireless communication standard.
This utility model embodiment is by arranging switch arrays unit at receiving terminal, and this switch arrays unit includes some switching tubes being in parallel, and the second control unit changes the inductance value of receiving coil unit by controlling the conducting of different switching tube.When distance between transmitting terminal with receiving terminal changes or transmitting terminal occurs bigger error with receiving terminal relative to position, now magnetic coupling factor changes, the inductance value of required receiving coil is determined when ensureing maximum power efficiency of transmission, and the most dynamically adjust switch arrays unit so that receiving coil reach determined by inductance value, thus improve output and the efficiency of transmission of this wireless electric vehicle charging device, and it is strong to have adaptive ability, the advantage that dynamic adjusting range is wide.Additionally, transmitting coil unit and receiving coil unit all use a loop construction, thus reduce the volume of this wireless electric vehicle charging device, in order to realize miniaturization, integrated.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment technical scheme, in describing embodiment below, the required accompanying drawing used is briefly described, apparently, accompanying drawing in describing below is embodiments more of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of wireless electric vehicle charging device that this utility model embodiment provides；
Fig. 2 is the connection diagram of Fig. 1 breaker in middle array element and receiving coil unit；
Fig. 3 is transmitting coil unit and the magnetic-coupled circuit theory diagrams of receiving coil unit in Fig. 1；
The change schematic diagram of load when Fig. 4 is the Dynamic Matching of this utility model embodiment offer；
Fig. 5 is output power curve figure corresponding to different loads that this utility model embodiment provides.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is a part of embodiment of this utility model rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of this utility model protection.
With reference to Fig. 1, the structural representation of a kind of wireless electric vehicle charging device that this utility model embodiment provides.This wireless electric vehicle charging device 1 includes the transmitting terminal 10 being connected to power frequency supply and the receiving terminal 20 being connected with load.In this utility model embodiment, power frequency supply is 380V three-phase industrial power, loads the battery system into electric automobile.This wireless electric vehicle charging device 1 by the magnetic coupling resonance principle of transmitting terminal 10 with receiving terminal 20, the electric energy of three-phase alternating-current supply is converted to battery of electric vehicle system needed for direct current energy thus be embodied as electric automobile and carry out the function of wireless charging.
Transmitting terminal 10 includes capability correction unit 11, inversion unit 12, transmitting coil unit the 13, first communication unit the 14, first control unit 15 and driver element 16；Capability correction unit 11, inversion unit 12 and transmitting coil unit 13 sequential series successively connect；The input of capability correction unit 11 connects power frequency supply；First communication unit 14 and the first control unit 15 are connected in series；The feedback signal of driver element 16 is as the input of the first control unit 15, and the first control unit 15 controls driver element 16 simultaneously；Driver element 16 drives inversion unit 12.
Receiving terminal 20 includes receiving coil unit 21, synchronous rectification unit 22, boosting inverter unit the 23, second communication unit the 24, second control unit 25 and switch arrays unit 26；Receiving coil unit 21, synchronous rectification unit 22, boosting inverter unit 23 sequential series successively connects；The output of boosting inverter unit 23 connects load；Second communication unit 24 and the second control unit 25 are connected in series；The output of the second control unit 25 controls boosting inverter unit 23 and synchronous rectification unit 22；The feedback signal of load is as the input of the second control unit 25；The feedback of switch arrays unit 26 is as the input of the second control unit 25, and the second control unit 25 controls switch arrays unit 26 simultaneously；Switch arrays unit 26 includes some switching tubes being in parallel, and controls the conducting of different switching tube by the second control unit 26 and change the inductance value of receiving coil unit 21.
First communication unit 14 and the second communication unit 24 are communicated by wireless signal.Preferably, the first communication unit 14 and the second communication unit 24 all use 2.4G wireless communication standard.Specifically, 2.4G wireless communication frequency band is for being between 2.405GHz-2.485GHz.The working method of 2.4G radio communication is full-duplex mode transmission, has a superpower anti-interference, high data rate, so that the transmission range that its maximum is up to 10 meters.
Transmitting coil unit 13 includes transmitting coil and the first compensation electric capacity being in series with transmitting coil, and receiving coil unit 21 includes receiving coil and second repays electric capacity with receiving coil is in series.The electric energy that inversion unit 12 exports is converted into magnetic field energy by transmitting coil, and by magnetic field coupling principle, magnetic field energy is transferred to receiving coil, and magnetic field energy is converted into electric energy and through conversion output to load by receiving coil.Transmitting coil utilizes the first compensation electric capacity effectively to convert electrical energy into magnetic field energy to launch, and receiving coil utilizes the second compensation electric capacity effectively by the magnetic field energy received and be converted into electric energy.Meanwhile, transmitting coil and receiving coil all serve magnetic field amplification, and respective amplification can be adjusted by the first compensation electric capacity, the second compensation electric capacity.
Transmitting coil is embedded in underground or places on the ground, and receiving coil is fixed on the bottom of electric automobile.In this utility model embodiment, transmitting coil unit 13 and receiving coil unit 21 use magnetic coupling resonance to carry out wireless power transmission, do not have the connection of electric wire between transmitting terminal 10 and receiving terminal 20.Illustrate, when electric automobile rests on preset stopping position, transmitting coil and the parallel placement of receiving coil, and the center of transmitting coil and receiving coil is on the same axis.Transmitting coil and receiving coil are coiled into by multiply enamel-covered wire, it should be noted that transmitting coil and the size of receiving coil, shape, the number of turn, distance, material can be different and adjust according to practical situation.
Connection diagram with reference to Fig. 2, switch arrays unit and receiving coil unit.As shown in the figure, in this utility model embodiment, switch arrays unit 26 includes the first pass open pipe S1, the second pass open pipe S2 and SAN GUAN open pipe S3 being in parallel, one end of receiving coil is connected with the first switching tube S1, its other end connects wire, and second switch pipe S2 and the 3rd switching tube S3 is connected respectively the diverse location at receiving coil.It should be noted that, the first switching tube S1, second switch pipe S2 and the 3rd switching tube S3 in switch arrays unit 26 can be any devices with on-off action, such as audion etc., and the quantity of switching tube is not limited in any way, and user can be set according to actual needs.In addition, this kind of attachment structure is also limited in the two ends of receiving coil, as the two ends of receiving coil can connect the first switching tube S1 and second switch pipe S2 respectively, or the two ends of receiving coil connect second switch pipe S2 and the 3rd switching tube S3 etc. respectively, are not construed as limiting herein.Second control unit 25 is simultaneously turned on by the different switching tube of control or multiple switching tube thus dynamically regulation receiving coil is at the inductance value of circuit.
With reference to Fig. 3, transmitting coil unit and the magnetic-coupled circuit theory diagrams of receiving coil unit.Transmitting coil unit 13 includes voltage source Vs, voltage source internal resistance Rs, the first compensation electric capacity Ct, the transmitting coil resistance Rt and transmitting coil Lt being serially connected.Wherein, voltage source Vs is the output voltage of inversion unit 12.Receiving coil unit 21 includes receiving coil Lr, receiving coil resistance Rr, the second compensation electric capacity Cr and load resistance RL。
According to Kirchhoff's second law, as follows to transmitting coil and receiving coil row KCL equation:
Vs=(Rs+Rt+j ω Lt+1/j ω Ct) it-j ω M ir
J ω M it=(RL+Rr+jωLr+1/jωCr)ir
Wherein, Vs represents voltage source amplitude, and it, ir represent transmitting coil electric current and receiving coil electric current respectively, and M represents the mutual inductance between transmitting coil and receiving coil, and Rt, Rr represent the resistance of transmitting coil and receiving coil, Rs, R respectivelyLRepresent voltage source internal resistance and load resistance respectively.
Receiving coil unit 21 reflexes to the resistance of transmitting coil unit 13:
RfleCt=(ω M)2/(RL+ Rr)=(k2Lt/CrRr)×(k2Lt/Cr RL)
Wherein, K=M/{ (Lr × Lt)1/2, K represents the coefficient of coup；
As shown from the above formula, receiving coil resistance Rr and load resistance RLThe parallel connection of two resistance it is equivalent in transmitting coil cell side.
The maximal efficiency that can be calculated this wireless electric vehicle charging device 1 is ηmax, optimal load R that maximal efficiency is correspondingLopt,
ηmax=K2Qt Qr/{1+(1+K2Qt Qr)1/2}
RLopt=Rr × { (1+K2Qt Qr)1/2}=(Lr/Cr)1/2×{(1+K2Qt Qr)/Qr}
Wherein, Qt=ω Lt/ (Rt+Rs), Qr=ω Lr/Rr, Qt, Qr represent the quality factor of transmitting coil and receiving coil respectively.
By ensureing that this wireless electric vehicle charging device 1 has maximal efficiency ηmaxTime, now corresponding optimal load is RLopt, and according to optimal load RLoptComputing formula understand: affect optimal load RLoptTwo running parameters be receiving coil inductance Lr and coefficient of coup K.
When distance between transmitting coil with receiving coil changes or sends coil and receiving coil relative to position appearance bigger error, now magnetic coupling factor K changes, and is ensureing maximum power efficiency of transmission ηmaxTime, according to optimal load RLoptDetermine required receiving coil inductance, and the most dynamically adjust switch arrays unit 26 so that receiving coil reach determined by inductance value, solve because the bottom level of different model electric automobile is different and the problem that the Wireless transceiver efficiency that deviation causes declines occurs in parking spot according to this, and by dynamically adjusting switch arrays unit 25 so that receiving coil reach determined by inductance value, and its dynamic adjusting range is wide, so that this wireless electric vehicle charging device 1 has stronger adaptive ability.
With reference to Fig. 4, the change schematic diagram of load during the Dynamic Matching that this utility model embodiment provides.As it can be seen, abscissa represents coefficient of coup K in figure, vertical coordinate represents optimal load RLopt, figure shows when the most corresponding 10Lr, Lr, 0.1Lr coefficient of coup K and optimal load RLoptDynamic relationship.It can be seen that when receiving coil Lr is constant, optimal load RLoptIncrease with the increase of coefficient of coup K；When coefficient of coup K is constant, optimal load RLoptIncrease with the increase of receiving coil Lr.
With reference to Fig. 5, the output power curve figure that different loads that this utility model embodiment provides is corresponding.As it can be seen, abscissa represents load RL in figure, vertical coordinate represents output Pout, and figure shows when the most corresponding K=0.01, K=0.015, K=0.02, K=0.04, K=0.1, K=0.25, K=0.5 load RL and output PoutDynamic changing curve.It can be seen that when coefficient of coup K is constant, output PoutSubstantially normal distribution trend is presented, i.e. with the increase output P of load RL with load RLoutPresent and first increase the trend reduced afterwards, and when loading RL and changing within the specific limits, higher output P can be maintainedoutConstant, and output P can be increased further by adjusting switch matrix unitoutRange of accommodation.
Illustrate, when distance between transmitting coil with receiving coil changes or sends coil and receiving coil relative to position appearance bigger error, determine the value of coefficient of coup K now, and find the curve corresponding with at this coefficient of coup K according to Fig. 5, and determine peak power output P of this curveoutCorresponding optimal load RLoptValue.Referring next to Fig. 4, find coefficient of coup K now and optimal load RLoptThe receiving coil inductance Lr corresponding to value, so that it is determined that in peak power output PoutTime inductance value corresponding to receiving coil, and by the second control unit 25 according to determined by receiving coil inductance adjust the conducting of different switching tubes receiving coil inductance needed for arriving in switch arrays.Adapt to the electric automobile of different automobile types and the stopping deviation that compatibility is bigger by this adjustment receiving coil inductance value, thus improve adaptivity and the robustness of this wireless electric vehicle charging device 1.Additionally, the transmitting coil unit 13 of this wireless electric vehicle charging device 1 and receiving coil unit 21 all use a loop construction, thus reduce the volume of this wireless electric vehicle charging device 1, in order to realize miniaturization, integrated.
The above; it is only detailed description of the invention of the present utility model; but protection domain of the present utility model is not limited thereto; any those familiar with the art is in the technical scope that this utility model discloses; can readily occur in amendment or the replacement of various equivalence, these amendments or replacement all should be contained within protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with scope of the claims.
Claims (4)
1. a wireless electric vehicle charging device, it is characterised in that include the transmitting terminal being connected to power frequency supply
And with the receiving terminal that is connected of load；
Described transmitting terminal include capability correction unit, inversion unit, transmitting coil unit, the first communication unit,
First control unit and driver element；Capability correction unit, inversion unit and transmitting coil unit order successively
It is connected in series；The input of capability correction unit connects power frequency supply；First communication unit and the first control unit
It is connected in series；The feedback signal of driver element as the input of the first control unit, the first control unit simultaneously
Control driver element；Drive unit drives inversion unit；
Described receiving terminal includes receiving coil unit, switch arrays unit, synchronous rectification unit, boosting inverter
Unit, the second communication unit and the second control unit；Receiving coil unit, synchronous rectification unit, rise buckling
Change unit sequential series successively to connect；The output of boosting inverter unit connects load；Second communication unit and
Two control units are connected in series；The output of the second control unit controls boosting inverter unit and synchronous rectification unit；
The feedback signal of load is as the input of the second control unit；The feedback of switch arrays unit controls as second
The input of unit, the second control unit controls switch arrays unit simultaneously；Switch arrays unit includes some phases
Switching tube in parallel, and by described second control unit control the conducting of different switching tube change described in connect
The inductance value of take-up coil unit；
Described first communication unit and the second communication unit are communicated by wireless signal；
Described transmitting coil unit includes transmitting coil and the first compensation electricity being in series with described transmitting coil
Holding, described transmitting coil is embedded in underground or places on the ground；
Described receiving coil unit includes receiving coil and second repays electric capacity with described receiving coil is in series,
Described receiving coil is fixed on the bottom of electric automobile.
Wireless electric vehicle charging device the most according to claim 1, it is characterised in that described transmitting line
Magnetic coupling resonance is used to carry out wireless power transmission between circle and described receiving coil.
Wireless electric vehicle charging device the most according to claim 1, it is characterised in that described switch arrays
Column unit includes the first pass open pipe, the second pass open pipe and SAN GUAN open pipe, the described reception line being in parallel
The two ends of circle are connected respectively wire and the first switching tube, second switch pipe and the 3rd switching tube correspondence respectively
It is connected to the diverse location of described receiving coil.
Wireless electric vehicle charging device the most according to claim 1, it is characterised in that described first leads to
Letter unit and the second communication unit all use 2.4G wireless communication standard.
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| CN201620237881.3U CN205489724U (en) | 2016-03-25 | 2016-03-25 | Wireless charging device of electronic automobile |
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| CN201620237881.3U CN205489724U (en) | 2016-03-25 | 2016-03-25 | Wireless charging device of electronic automobile |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106941284A (en) * | 2017-03-24 | 2017-07-11 | 哈尔滨工业大学深圳研究生院 | A kind of coupled resonance formula underwater wireless charging device and method |
| CN107031443A (en) * | 2017-04-06 | 2017-08-11 | 深圳市华禹无线供电技术有限公司 | A kind of dynamic radio conducts electricity passage, road, system |
| CN107248773A (en) * | 2016-03-25 | 2017-10-13 | 十铨恒泰科技（深圳）有限公司 | A kind of wireless electric vehicle charging device |
| CN109560618A (en) * | 2018-10-19 | 2019-04-02 | 广州周立功单片机科技有限公司 | Wireless charging transmit circuit, wireless charging circuit and charge control method |
| CN110050360A (en) * | 2016-10-14 | 2019-07-23 | 伊奈维特有限责任公司 | The optical communication interface of energy-storage system battery module |
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2016
- 2016-03-25 CN CN201620237881.3U patent/CN205489724U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107248773A (en) * | 2016-03-25 | 2017-10-13 | 十铨恒泰科技（深圳）有限公司 | A kind of wireless electric vehicle charging device |
| CN107248773B (en) * | 2016-03-25 | 2023-09-05 | 十铨恒泰科技（深圳）有限公司 | Wireless charging device of electric automobile |
| CN110050360A (en) * | 2016-10-14 | 2019-07-23 | 伊奈维特有限责任公司 | The optical communication interface of energy-storage system battery module |
| CN106941284A (en) * | 2017-03-24 | 2017-07-11 | 哈尔滨工业大学深圳研究生院 | A kind of coupled resonance formula underwater wireless charging device and method |
| CN107031443A (en) * | 2017-04-06 | 2017-08-11 | 深圳市华禹无线供电技术有限公司 | A kind of dynamic radio conducts electricity passage, road, system |
| CN107031443B (en) * | 2017-04-06 | 2019-09-20 | 深圳市华禹无线供电技术有限公司 | A kind of dynamic radio conducts electricity channel, road, system |
| CN109560618A (en) * | 2018-10-19 | 2019-04-02 | 广州周立功单片机科技有限公司 | Wireless charging transmit circuit, wireless charging circuit and charge control method |
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