CN106080233A - A kind of one-to-many electric automobile road surface power-supply system power and efficiency-adjusted method - Google Patents

A kind of one-to-many electric automobile road surface power-supply system power and efficiency-adjusted method Download PDF

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Publication number
CN106080233A
CN106080233A CN201610431898.7A CN201610431898A CN106080233A CN 106080233 A CN106080233 A CN 106080233A CN 201610431898 A CN201610431898 A CN 201610431898A CN 106080233 A CN106080233 A CN 106080233A
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China
Prior art keywords
electric automobile
transmitting coil
power
road surface
efficiency
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CN201610431898.7A
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Chinese (zh)
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CN106080233B (en
Inventor
谭林林
郭金鹏
黄学良
刘瀚
颜长鑫
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Southeast University
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Southeast University
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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
    • B60L53/35—Means for automatic or assisted adjustment of the relative position of charging devices and vehicles
    • B60L53/38—Means for automatic or assisted adjustment of the relative position of charging devices and vehicles specially adapted for charging by inductive energy transfer
    • B60L53/39—Means for automatic or assisted adjustment of the relative position of charging devices and vehicles specially adapted for charging by inductive energy transfer with position-responsive activation of primary coils
    • 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
    • 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
    • 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
    • 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
    • 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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  • 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 a kind of one-to-many electric automobile road surface power-supply system power and efficiency-adjusted method, use large-sized transmitting coil to power to multiple undersized receiving coils simultaneously.Poewr control method judges the change of Rechargeable vehicle quantity by the change of detection source electric current, then regulates the output voltage of power supply, it is ensured that the reception power of separate unit electric automobile remains constant.Efficiency optimization method is by receiving the impedance matching network regulating load characteristic of side so that can obtain maximal efficiency for varying number electric automobile when powering.

Description

A kind of one-to-many electric automobile road surface power-supply system power and efficiency-adjusted method
Technical field
The invention belongs to the application of wireless power transmission technology, particularly to the tool of electric automobile road surface power-supply system Body controls and optimization method.
Background technology
The advantage as the pure electric automobile of power source using set of cells with low noise, zero-emission, is to have broad based growth A kind of green traffic instrument of prospect, but the problem of charging difficulty remains the big stumbling-block hindering its development.With traditional wire Charging modes is compared, and the mode of wireless charging need not operate frequently, can avoid the leakage that plugs and sockets mechanical friction brings Electrification, additionally without taking substantial amounts of land resource.But on the other hand, due to the restriction of power battery technology, electronic Automobile there is problems itself: course continuation mileage is short, and the charging interval is long, and frequently, set of cells is heavy in charging.To this end, it is electronic The technology that vehicle pavement is powered is suggested, and installs transmitting coil on road surface, it is possible to realize electric automobile walks while fill, greatly Improve the flying power of electric automobile.But existing road surface used for electric vehicle wireless power technology focuses mostly on " single-shot is penetrated Coil list receiving coil " in (" one to one ") or " multi-emitting coil list receiving coil " (" many-one ") systematic research, about The research of " single the many receiving coils of transmitting coil " (" one-to-many ") also rarely has and sets foot in.Compared with multi-emitting coil system, single-shot is penetrated The electrical energy changer of coil system is few, and the efficiency of system is high, therefore uses " one-to-many " road surface power-supply system to have more practicality Property.
Summary of the invention
Goal of the invention: for above-mentioned prior art, proposes a kind of one-to-many electric automobile road surface power-supply system power and effect Rate control method, it is achieved rate and the regulation of efficiency.
Technical scheme: a kind of one-to-many electric automobile road surface power-supply system power and efficiency-adjusted method is the pair of many Electric automobile road surface power-supply system includes the radio energy emitting portion being arranged in road surface, the radio being arranged on electric automobile Energy receiving portion, described radio energy emitting portion includes transmitting coil, high frequency electric source, emitting side impedance matching network, described Radio energy receiving portion includes receiving coil, loads and receive side impedance matching network；Set and access the electronic of this system The radio energy receiving portion of automobile is identical；Comprise the steps:
Step 1), judge the access of electric automobile by the curent change in detection transmitting coil loop or exit charging electric Make, if particularly as follows: current time has N electric automobile to access same transmitting coil when being charged, transmitting coil loop Electric current I0(N) it is:
I 0 ( N ) = U 0 Z 0 + Nω 2 M 0 2 / Z
Wherein, U0For high frequency electric source voltage, Z0For the impedance of radio energy emitting portion, ω is the operating frequency of system, M0 For the mutual inductance between arbitrary receiving coil and transmitting coil, Z is the impedance of the radio energy receiving portion of arbitrary electric automobile；
After occurring electric automobile to access or exit charging, now there is N' electric automobile to access transmitting coil and fill Electricity, now the electric current I in transmitting coil loop0(N) ' it is:
I 0 ( N ) ′ = U 0 Z 0 + ω 2 M 0 2 Σ i = 1 N ′ 1 Z
Step 2), according to the electric automobile quantity regulating radio energy emitting portion medium-high frequency power supply of actual access system Output voltage U0' it is:
U 0 ′ = U 0 I 0 ( N ) ′ I 0 ( N )
Step 3), regulation receives side impedance matching network, when load matched coefficient T meets following formula, wireless charging efficiency For optimum；
T = 1 + N ′ k 2 Q 0 Q 1 1 + T 0
Wherein, k is the coefficient of coup between arbitrary receiving coil and transmitting coil, Q0For the quality factor of transmitting coil, Q1 For the quality factor of receiving coil, T0Loss factor for mains side.
Beneficial effect: a kind of one-to-many electric automobile road surface power-supply system power of the present invention and efficiency-adjusted method is logical Cross and a large-sized transmitting coil is installed on ground, multiple small size receiving coils of uniformly arranging above transmitting coil are the least Size receiving coil is arranged on electric automobile side, is coupled to receive energy by magnetic field between dispatch coil, and then for loading Power supply.This method achieves stable reception power and controls and the maximization of efficiency of transmission.Stably receive in power control, first The change of receiving coil quantity, source electric current when receiving coil quantity increases is judged by the change of detection source size of current Reducing, when receiving coil quantity reduces, source electric current increases；Then according to the receiving coil quantity detected and single reception line Power needed for circle regulates electric power output voltage, to ensure the power stability of single receiving coil.Efficiency of transmission maximizes control In system, determine the coupling impedance of optimum according to different receiving coil quantity so that system whole efficiency is the highest.
Accompanying drawing explanation
Fig. 1 is the structural representation of one-to-many electric automobile road surface power-supply system；
Fig. 2 is one-to-many electric automobile road surface power-supply system equivalent circuit diagram；
Fig. 3 is under different loads quantity, single load-receipt power and the relation of supply voltage；
Fig. 4 is the graph of relation of different loads quantity efficiency of transmission and load.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is done and further explain.
One-to-many electric automobile road surface power-supply system, including being arranged in the radio energy emitting portion on road surface, is arranged on electricity Radio energy receiving portion on electrical automobile, black region as shown in Figure 1 is for for circuit section, the radio energy emission part on road surface Point being arranged in this section, gray area is common section, and band square frame dolly represents the electric automobile charged, driver according to The actual electricity of electric automobile sends charge request, it is pointed out that electric automobile road surface power-supply system role is electricity One of supply mode of electrical automobile energy, the control system on road surface needs to decide whether to accept charge request according to actual condition.
As in figure 2 it is shown, radio energy emitting portion includes transmitting coil, high frequency electric source, emitting side impedance matching network, nothing Line electric energy receiving portion includes receiving coil, loads and receive side impedance matching network.Set the electronic vapour accessing this system The radio energy receiving portion of car is identical, RSRepresent the internal resistance of source, RiAnd R0Represent dispatch coil internal resistance, R respectivelyLRepresent The equivalent resistance of receiving coil rear end, RLCan be adjusted by the impedance matching network of load-side.LiAnd L0Represent receipts respectively The self-induction of hair line circle, CiAnd C0Represent the resonance compensation electric capacity of transmitting-receiving side respectively.Mutual between arbitrary receiving coil and transmitting coil SenseK is the coefficient of coup between arbitrary receiving coil and transmitting coil.
Power based on said system and efficiency-adjusted method comprise the steps:
Step 1), judge the access of electric automobile by the curent change in detection transmitting coil loop or exit charging electric Make, if particularly as follows: current time has N electric automobile to access same transmitting coil when being charged, fixed according to kirchhoff Rule obtains the electric current I in transmitting coil loop0(N) it is:
I 0 ( N ) = U 0 Z 0 + Nω 2 M 0 2 / Z
Wherein, U0For high frequency electric source voltage, Z0For the impedance of radio energy emitting portion, ω is the operating frequency of system, M0 For the mutual inductance between arbitrary receiving coil and transmitting coil, Z is the impedance of the radio energy receiving portion of arbitrary electric automobile；Its In, Z0=j ω L0+1/jωC0+RS+R0, Z=j ω Li+1/jωCi+RL+Ri。
After occurring electric automobile to access or exit charging, now there is N' electric automobile to access transmitting coil and fill Electricity, now the electric current I in transmitting coil loop0(N) ' it is:
I 0 ( N ) ′ = U 0 Z 0 + ω 2 M 0 2 Σ i = 1 N ′ 1 Z
If electric automobile quantity increases, then launching circuit electric current reduces；Otherwise, launching circuit electric current increases；By detection Above-mentioned I0(N) ' and I0(N) change judges that electric automobile sails or roll away from charging road surface into.
Step 2), according to the electric automobile quantity regulating radio energy emitting portion medium-high frequency power supply of actual access system Output voltage U0' it is:
U 0 ′ = U 0 I 0 ( N ) ′ I 0 ( N )
By above-mentioned control, after charging electric automobile quantity changes, the electric current of emitting side keeps constant, keeps negative The reception power carrying end is constant.
Step 3), regulation receives side impedance matching network, according to actual Rechargeable vehicle quantity N', when load matched coefficient T When meeting following formula, wireless charging efficiency is optimum；
T = 1 + N ′ k 2 Q 0 Q 1 1 + T 0
Wherein, k is the coefficient of coup between arbitrary receiving coil and transmitting coil, Q0For the quality factor of transmitting coil, Q1 For the quality factor of receiving coil, T0Loss factor for mains side.
In the one-to-many electric automobile road surface power-supply system of the present invention, when the receiving coil quantity of actual access system is During N', the reception power P of single loadiFor:
P i = ω 2 M 0 2 U 0 2 R L ( ZZ 0 + N ′ ω 2 M 0 2 ) 2
Efficiency of transmission η of system is:
η = Σ i = 1 N ′ P i U 0 I 0 = N ′ ω 2 M 0 2 R L Z ( ZZ 0 + N ′ ω 2 M 0 2 )
The size that quality factor are Q, Q of definition coil indicates the size of coil loss, and the loss of the biggest coil of Q is more Little, on the contrary loss is the biggest, and the quality factor of transmitting coil and receiving coil are respectivelyLoad matched system NumberThe loss factor of mains side
Efficiency of transmission η of system is further represented as:
η = N ′ k 2 Q 0 Q 1 T ( 1 + T ) ( ( 1 + T ) ( 1 + T 0 ) + N ′ k 2 Q 0 Q 1 )
T derivation zero setting are solved and can obtain by above formula, whenTime, efficiency obtains maximum.
In the present embodiment, the parameter of circuit model is: transmitting coil inductance L0=74.8 μ H, transmitting coil internal resistance R0=0.53 Ω, transmitting terminal compensates electric capacity C0=47nF, receiving coil inductance Li=21.4 μ H, receiving coil internal resistance Ri=0.21 Ω, receiving terminal Compensate electric capacity Ci=168nF.
Fixed reception load RLIt is 10 Ω, changes the quantity accessing load, regulate electric power output voltage, obtain single load Receive the relation of power and voltage as shown in Figure 3.Magnitude of voltage corresponding when receiving equal-wattage 50W is respectively 24V, 25.5V And 27.2V, consistent with conclusion described in step 2.
Change and access load RLSize, in the case of different loads number, record input and output counting respectively Calculate the relation obtaining system effectiveness with load, as shown in Figure 4.Load number N=1, optimal load value corresponding to 2,3 are divided Not being 4 Ω, 5.5 Ω, 7.1 Ω, the maximum point that the efficiency optimization point that experiment obtains is tried to achieve with theory is essentially identical.
Above analysis result shows, one-to-many electric automobile road surface power-supply system power and efficiency that the present invention proposes are adjusted Joint method, on the one hand can stablize separate unit electric automobile when Rechargeable vehicle quantity changes by regulation electric power output voltage Reception power, on the other hand can significantly improve the work efficiency of system by receiving the impedance matching of side.For electric automobile The operation of mobile electric power system controls and optimization provides certain reference value.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art For Yuan, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications also should It is considered as protection scope of the present invention.

Claims (1)

1. an one-to-many electric automobile road surface power-supply system power and efficiency-adjusted method, it is characterised in that: the pair of many Electric automobile road surface power-supply system includes the radio energy emitting portion being arranged in road surface, the radio being arranged on electric automobile Energy receiving portion, described radio energy emitting portion includes transmitting coil, high frequency electric source, emitting side impedance matching network, described Radio energy receiving portion includes receiving coil, loads and receive side impedance matching network；Set and access the electronic of this system The radio energy receiving portion of automobile is identical；Comprise the steps:
Step 1), judge the access of electric automobile by the curent change in detection transmitting coil loop or exit charging action, If during particularly as follows: current time has N the electric automobile same transmitting coil of access to be charged, the electric current in transmitting coil loop I0(N) it is:
I 0 ( N ) = U 0 Z 0 + Nω 2 M 0 2 / Z
Wherein, U0For high frequency electric source voltage, Z0For the impedance of radio energy emitting portion, ω is the operating frequency of system, M0For appointing Mutual inductance between one receiving coil and transmitting coil, Z is the impedance of the radio energy receiving portion of arbitrary electric automobile；
After occurring electric automobile to access or exit charging, now there is N' electric automobile to access transmitting coil and be charged, this Time transmitting coil loop electric current I0(N) ' it is:
I 0 ( N ) ′ = U 0 Z 0 + ω 2 M 0 2 Σ i = 1 N ′ 1 Z
Step 2), according to the output of the electric automobile quantity regulating radio energy emitting portion medium-high frequency power supply of actual access system Voltage U0' it is:
U 0 ′ = U 0 I 0 ( N ) ′ I 0 ( N )
Step 3), regulation receives side impedance matching network, and when load matched coefficient T meets following formula, wireless charging efficiency is Excellent；
T = 1 + N ′ k 2 Q 0 Q 1 1 + T 0
Wherein, k is the coefficient of coup between arbitrary receiving coil and transmitting coil, Q0For the quality factor of transmitting coil, Q1For connecing The quality factor of take-up circle, T0Loss factor for mains side.
CN201610431898.7A 2016-06-15 2016-06-15 A kind of one-to-many electric vehicle road surface power-supply system power and efficiency-adjusted method Active CN106080233B (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106549470A (en) * 2016-12-22 2017-03-29 赵阳 One-to-many wireless charging system
CN107181326A (en) * 2017-04-27 2017-09-19 上海蔚来汽车有限公司 Electric motor car wireless charging emission system and its transmitting coil switching method, device
CN107284258A (en) * 2017-06-12 2017-10-24 东南大学 The stabilizing control system and its method of electric automobile load Stochastic accessing wireless charging
CN107394904A (en) * 2017-08-22 2017-11-24 国网江苏省电力公司电力科学研究院 Electric automobile wireless charging holds inclined rate coupled resonators design method with high
CN108327556A (en) * 2018-02-05 2018-07-27 浙江齐享科技有限公司 A kind of method and device for shared Moped Scooter charging
CN108512317A (en) * 2018-04-03 2018-09-07 北京邮电大学 Determine the method and device of electric energy receiving terminal number in radio energy transmission system
CN110014893A (en) * 2017-09-29 2019-07-16 上海寰晟新能源科技有限公司 Based on electric car multichannel magnetic coupling type wireless charging system
CN111002859A (en) * 2019-12-11 2020-04-14 深圳猛犸电动科技有限公司 Method and device for identifying private patch board of charging pile, terminal equipment and storage medium
CN111025043A (en) * 2019-11-13 2020-04-17 深圳猛犸电动科技有限公司 Method for identifying charging behavior and terminal equipment
CN111016717A (en) * 2019-11-29 2020-04-17 深圳猛犸电动科技有限公司 Method and device for identifying simultaneous charging of multiple electric vehicles
CN114537169A (en) * 2022-03-28 2022-05-27 华人运通(山东)科技有限公司 High-power wireless charger and vehicle-mounted end power supply circuit and control method thereof

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CN202749884U (en) * 2012-09-21 2013-02-20 东北林业大学 Wireless charger with input of multiple power supplies
CN203326733U (en) * 2013-05-24 2013-12-04 江苏建筑职业技术学院 Wireless sensor network node charging system
CN104701958A (en) * 2015-03-27 2015-06-10 江苏天行健汽车科技有限公司 Automatic wireless charging receiving and transmitting system of electric vehicle
KR20160028365A (en) * 2014-08-28 2016-03-11 현대자동차주식회사 Controlling method of wireless power transmitting system, wireless power receiving apparatus and wireless power transmitting method

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CN202749884U (en) * 2012-09-21 2013-02-20 东北林业大学 Wireless charger with input of multiple power supplies
CN203326733U (en) * 2013-05-24 2013-12-04 江苏建筑职业技术学院 Wireless sensor network node charging system
KR20160028365A (en) * 2014-08-28 2016-03-11 현대자동차주식회사 Controlling method of wireless power transmitting system, wireless power receiving apparatus and wireless power transmitting method
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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106549470A (en) * 2016-12-22 2017-03-29 赵阳 One-to-many wireless charging system
CN107181326A (en) * 2017-04-27 2017-09-19 上海蔚来汽车有限公司 Electric motor car wireless charging emission system and its transmitting coil switching method, device
CN107284258A (en) * 2017-06-12 2017-10-24 东南大学 The stabilizing control system and its method of electric automobile load Stochastic accessing wireless charging
CN107394904A (en) * 2017-08-22 2017-11-24 国网江苏省电力公司电力科学研究院 Electric automobile wireless charging holds inclined rate coupled resonators design method with high
CN110014893A (en) * 2017-09-29 2019-07-16 上海寰晟新能源科技有限公司 Based on electric car multichannel magnetic coupling type wireless charging system
CN108327556A (en) * 2018-02-05 2018-07-27 浙江齐享科技有限公司 A kind of method and device for shared Moped Scooter charging
CN108512317A (en) * 2018-04-03 2018-09-07 北京邮电大学 Determine the method and device of electric energy receiving terminal number in radio energy transmission system
CN108512317B (en) * 2018-04-03 2020-08-07 北京邮电大学 Method and device for determining number of electric energy receiving terminals in wireless electric energy transmission system
CN111025043A (en) * 2019-11-13 2020-04-17 深圳猛犸电动科技有限公司 Method for identifying charging behavior and terminal equipment
CN111016717A (en) * 2019-11-29 2020-04-17 深圳猛犸电动科技有限公司 Method and device for identifying simultaneous charging of multiple electric vehicles
CN111016717B (en) * 2019-11-29 2021-05-14 深圳猛犸电动科技有限公司 Method and device for identifying simultaneous charging of multiple electric vehicles
CN111002859A (en) * 2019-12-11 2020-04-14 深圳猛犸电动科技有限公司 Method and device for identifying private patch board of charging pile, terminal equipment and storage medium
CN114537169A (en) * 2022-03-28 2022-05-27 华人运通(山东)科技有限公司 High-power wireless charger and vehicle-mounted end power supply circuit and control method thereof

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