CN107683555A - Change field frequency to maintain the wireless battery charging system of the phase relation of desired voltage x current - Google Patents
Change field frequency to maintain the wireless battery charging system of the phase relation of desired voltage x current Download PDFInfo
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- CN107683555A CN107683555A CN201680027367.XA CN201680027367A CN107683555A CN 107683555 A CN107683555 A CN 107683555A CN 201680027367 A CN201680027367 A CN 201680027367A CN 107683555 A CN107683555 A CN 107683555A
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- 238000004146 energy storage Methods 0.000 claims abstract description 15
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- 230000008878 coupling Effects 0.000 description 17
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- 238000012544 monitoring process Methods 0.000 description 12
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- 238000004891 communication Methods 0.000 description 3
- 230000015654 memory Effects 0.000 description 3
- 230000002463 transducing effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
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Classifications
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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
-
- 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
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
-
- 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
- B60L53/126—Methods for pairing a vehicle and a charging station, e.g. establishing a one-to-one relation between a wireless power transmitter and a wireless power receiver
-
- 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
-
- 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
- H02J50/80—Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
-
- H02J7/025—
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/90—Vehicles comprising electric prime movers
- B60Y2200/91—Electric vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/90—Vehicles comprising electric prime movers
- B60Y2200/92—Hybrid vehicles
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Current-Collector Devices For Electrically Propelled Vehicles (AREA)
Abstract
One kind is configured as the charging system (12) to energy storage device (14) wireless charging of such as battery (14) etc.The charging system (12) includes with AC power (48) telecommunication and is electromagnetically coupled to the outer load transducer (18) for the vehicle-mounted transducer (20) for being connected to energy storage device (14).Variable oscillator (71) in controller (53) regulation power transmitter (16), thus change the frequency of sent electrical power.Charging system (12) also includes and controller (53) and the outer phase detecting circuit (72) for carrying transducer (18) and communicating and being configured to determine the phase difference between the alternating voltage and alternating current by power supply (48) offer.Controller (53) is configured as adjusting variable oscillator (71) so that the frequency of the electrical power sent maintains phase difference in desired scope based on phase difference.
Description
The cross reference of related application
The application is required in the U.S. Patent application submitted on May 11st, 2015 according to the 8th article of Patent Cooperation Treaty
No.14/708,526 benefit of priority, the complete disclosure of this application are incorporated herein by reference.
Technical field
The present invention relates to for the charging system to Vehicular battery wireless charging, relate more specifically to be configured as changing magnetic
Field frequencies range is to maintain the wireless battery charging system of the phase relation of desired voltage-to-current.
Background technology
Outer load transducer and vehicle-mounted transducer with Wireless transceiver electric energy be magnetically coupled and across physical clearance it is wireless
Charging system is known.Due to various loads, the tolerance of part, temperature, between outer load transducer and vehicle-mounted transducer
Optimal magnetic-coupled resonant frequency can change.In order to maintain highest level of efficiency, it is necessary to a kind of operation charging system with
The optimal magnetic-coupled mode of maintenance system.Furthermore, it is necessary to solve wireless charging system from different resonant frequencies by not
The interoperability for the vehicle-mounted transducer built with supplier so that the vehicle-mounted transducer of each supplier need not only with the supply
The wireless charging system of business is used together.
The content of the invention
According to an embodiment of the invention, there is provided a kind of charging system.The charging system be configured to energy storage device without
Micro USB electricity.The charging system includes electrical power transmitter, controller, outer load transducer and phase detecting circuit, electrical power transmitting
Device includes variable oscillator, and the variable oscillator is configured as sending (source) with alternating current, alternating current
The electrical power of pressure and frequency；Controller is operable as adjusting variable oscillator, thus changes the electricity for sending (sourced)
The frequency of power；Outer load transducer and electrical power transmitter telecommunication, it is configured as being electromagnetically coupled to and energy storage device electricity
The vehicle-mounted transducer of communication, vehicle-mounted transducer capture electrical power is thus caused to charge energy storage device；Phase-detection electricity
Road and controller and outer load transducer communicate and are configured to determine that the phase difference between alternating voltage and alternating current.The control
Device is configured as adjusting variable oscillator so that the frequency of the electrical power sent maintains phase difference based on phase difference
In desired scope.
The controller can be configured as adjusting variable oscillator so that the frequency of the electrical power sent is 10,000
Conspicuous (kHz) is to scanning in 450kHz frequency range.
The charging system may also include the wireless launcher with controller telecommunication.In this case, vehicle-mounted transducer
With the power-sensing circuit telecommunication for the value for being configured to determine that captured electrical power.The power-sensing circuit is with being configured as
The wireless receiver telecommunication of the value for the electrical power being captured via wireless launcher to controller Wireless transceiver, and wherein control
Device processed is configured as by being compared to the value of the value of captured electrical power and the electrical power sent to determine that power is imitated
Rate.The controller is configured as based on power efficiency regulation variable oscillator so that the frequency of the electrical power sent makes
Power efficiency maximizes.
Vehicle-mounted transducer and energy storage device can be arranged in vehicle.Outer load transducer and electrical power transmitter can be with
It is arranged on outside vehicle.Alternatively, outer load transducer and electrical power transmitter can be arranged in vehicle.
According to another embodiment of the invention, there is provided a kind of charging system.The charging system is configured to energy stores
Equipment wireless charging.The charging system includes electrical power transmitter, controller, outer load transducer and wireless launcher, electrical power
Transmitter includes variable oscillator, the variable oscillator be configured as sending with alternating current, alternating voltage and
The electrical power of frequency；Controller is operable as adjusting variable oscillator, thus changes the frequency of sent electrical power；Outside
Transducer and electrical power transmitter telecommunication are carried, is configured as being electromagnetically coupled to the vehicle-mounted transducing with energy storage device telecommunication
Device, vehicle-mounted transducer capture electrical power is thus caused to charge energy storage device；Wireless launcher and controller telecommunication.
The power-sensing circuit telecommunication of value of the vehicle-mounted transducer with being configured to determine that captured electrical power.Power-sensing circuit with
It is configured as the wireless receiver telecommunication of the value for the electrical power being captured via wireless launcher to controller Wireless transceiver.Control
Device processed is configured as by being compared to the value of the value of captured electrical power and the electrical power sent to determine that power is imitated
Rate.The controller is configured as based on power efficiency regulation variable oscillator so that the frequency of the electrical power sent makes
Power efficiency maximizes.
Theme discussed in background section should not only because it in the background section refer to and it is false
It is set to prior art.Similarly, the problem of theme mentioned in background section or with background section is associated is not
It should be assumed formerly to have been recognized in the prior art.Theme in background section is merely representative of different sides
Method, themselves it is also likely to be invention.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings, in accompanying drawing：
Fig. 1 is the drawing side view according to the charging system including variable oscillator (VFO) circuit of the present invention；
Fig. 2 is provided in the schematic diagram of the charging system of Fig. 1 among battery and vehicle-mounted transducer；
Fig. 3 shows the schematic diagram of Fig. 1 VFO circuits；
Fig. 4 shows the relation of the angular phase difference between the voltage and current by Fig. 3 VFO circuit monitorings.
Fig. 5 shows the schematic diagram of the VFO circuits of the charging system of the alternative embodiment according to the present invention.
Embodiment
The resonant frequency of wireless charging system may electric component performance becomes due to load change, caused by tolerance is superimposed
Change, temperature change, part arrangement and orientation change and change.If the frequency tuning for a specific vehicle-mounted transducer
It is outer to carry transducer and the then outer different vehicle-mounted transducers for carrying transducer from being not tuned to identical frequency or frequency range
It is used together, then is also possible to the mismatch for causing resonant frequency.The change of these species may undesirably reduce wireless charging
The power delivery efficiency of electric system.It has been found that can be relative to above-mentioned change by adjusting the outer output frequency for carrying transducer
Effectively to manage and control power delivery efficiency.
The output frequency of the electrical power transmitter of transducer offer electrical power is outwards carried by being arranged in power transmitter
Variable oscillator (VFO) circuit determines.VFO circuits in the charging system are advantageously provided by outer load transducer production
The adjustment of the frequency of raw magnetic energy, closely to match the resonant frequency of vehicle-mounted transducer.VFO circuits advantageously allow for outer
The resonant frequency for carrying transducer and vehicle-mounted transducer is conditioned, with accommodate fabrication tolerance, environmental condition and it is outer carry transducer and
The misalignment of in-car transducer.VFO circuits also accommodate is built into the outer load transducer of different size and vehicle-mounted by different manufacturers
Resonant frequency between transducer is poor.
The non-limiting example for embodying the wireless charging system 12 of the feature of the present invention is shown in fig. 1 and 2.It is in herein
Existing wireless charging system 12 is configured as charging to the battery 14 being arranged in vehicle 40.The vehicle 40 can be hybrid power
Vehicle or hybrid electric vehicle, and battery 14 can be configured as driving the propulsion system (not shown) of vehicle.Wireless charging
System 12 includes AC power transmitter 16, outer load transducer 18 and vehicle-mounted transducer 20.Power transmitter 16 also includes variable
Frequency oscillator (VFO) circuit 24.Power transmitter 16 is arranged on outside vehicle 40.Outer load transducer 18 and the electricity of VFO circuits 24 are logical
Letter.Preferably, the outer ground 22 for carrying transducer 18 and being configured as being fixed to such as garage floor or car park surfaces etc.It is vehicle-mounted
Transducer 20 is attached to vehicle 40.Vehicle-mounted transducer 20 can be located on the chassis 26 of vehicle 14.
Outer load transducer 18 includes source coil (not shown), and the source coil is when by with the friendship provided by power transmitter 16
During the excitation of the electric energy of stream voltage and alternating current, the magnetic field that magnetic energy 44 is wirelessly transmitted to vehicle-mounted transducer 20 is generated.For electricity
The charging in pond 14, vehicle-mounted transducer 20 are spaced apart with outer load transducer 18, so as to carry transducer 18 and vehicle-mounted transducer 20 by outer
Separate a segment distance.The outer alternating magnetic field for carrying the generation of transducer 18 is induced with alternating current in capture coil (not shown)
The alternating current of pressure.The captured electric energy is used to charge to the battery 14 of vehicle 40.
The efficiency of energy delivery for carrying the energy between transducer 18 and vehicle-mounted transducer 20 outside depends on these transducers
18th, 20 alignment so that energy can be wirelessly communicated between transducer.When at least a portion covering of vehicle-mounted transducer 20 is outer
When carrying transducer 18, it is possible to achieve this alignment of transducer 18,20.With reference to figure 2, at least a portion of vehicle-mounted transducer 20 is covered
Lid is outer to carry transducer 18.Alternatively, vehicle-mounted transducer 20 can not cover outer load transducer 18, but still neighbouring vehicle-mounted transducing
Device 20 so that wireless energy transmission occurs.
Power transmitter 16 and the telecommunication of power supply 48.Power supply 48 can provide generally associated with public utilities main line ()
120VAC or 240VAC voltage.According to the utility criterion of specific geographic position, the voltage of power supply 48 can generally have 60 hertz
Hereby (Hz) or 50 hertz of alternative frequency.Alternatively, power supply 48 can have the operating voltage different from 120VAC or 240VAC
Or with the working frequency different from 50Hz or 60Hz.
Wireless charging system 12 also includes controller/converter 53, the controller/converter 53 be arranged in vehicle 40 and
Coordinate with power transmitter 16, outer load transducer 18 and vehicle-mounted transducer 20 to provide the electric current for helping to charge to battery 14.
The convenor section of the controller/converter 53 includes the electric component for forming rectifier circuit (not shown).Rectifier electricity
Battery 14 is charged so that the HV exported by vehicle-mounted transducer 20 HF AC signals are converted to the vehicle-mounted telecommunication of transducer 20 on road
More effective HV DC signals.Handed over as it is used herein, HV HF AC signals are high voltage, the high frequencies generated by VFO circuits 24
The electric signal of electric current (AC) is flowed, and is input to outer due to carrying the magnetic coupling between transducer 18 and vehicle-mounted transducer 20 outside
Carry transducer 18 and exported from vehicle-mounted transducer 20.In the illustrated example, the voltage of HV HF AC signals is more than 120VAC
And the frequency of HV HF AC signals is more than 60 hertz (Hz).The frequency can be in the range of 10kHz to 450kHz.For example, should
Scope can cover the frequency for being generally used for close coupling resonator typically in the range of 10-70kHz, and typically in 50-
The frequency for being generally used for loose coupling resonator in the range of 450kHz.It is same as it is used herein, HV DC signals be voltage and
The electric current not high voltage of time-varying, the electric signal of direct current (DC).
The controller part of controller/converter 53 includes CPU (not shown), its can be microprocessor,
Application specific integrated circuit (ASIC), or can be established by discrete logic and timing circuit (not shown).For controller part programming
Software instruction can be stored in non-volatile (NV) memory devices (not shown).NV memory devices can be comprised in
In microprocessor or ASIC, or it can be single equipment.The non-limiting example of the type of workable NV memories
Read-only storage (ROM) and flash memory including Electrically Erasable Read Only Memory (EEPROM), mask.The controller part
Also include the wireline transceiver (not shown) of such as controller area net (CAN) transceiver etc, with allow controller part with
Other equipment in vehicle 40 establishes telecommunication.
As shown in Fig. 2 charging system 12 also includes the transmitter (not shown) being arranged in controller/converter 53 and set
The receiver (having shown that now) in power transmitter 16 is put, the transmitter and receiver are established from controller/converter 53
To the Radio Link 65 of power transmitter 16.The transmitter and receiver can be configured as transceiver, to establish from power
Transmitter 16 arrives the return Radio Link 66 of controller/converter 53.
Controller part measurement voltage, electric current and power.The controller part of controller/converter 53 is via Radio Link
65 send the voltage measured, electric current and power data to power transmitter 16 so that power transmitter 16 can be adjusted further
Section is supplied to the outer quantity of power for carrying transducer 18 to ensure optimal charge system-power efficiency.Preferably, optimal charge system work(
Rate efficiency is more than 85%.Similarly, the power data that power transmitter 16 can also will be provided via Radio Link 66 is returned
It is wirelessly transmitted to the controller part of controller/converter 53.Instant controller/configuration previously described herein and other match somebody with somebody
Put " has the charging system (ELECTRICAL for the energy coupling arrangement for being used for wireless energy transmission in-between entitled
CHARGING SYSTEM HAVING ENERGY COUPLING ARRANGEMENT FOR WIRELESS ENERGY
TRANSMISSION THEREBETWEEN) " U.S. Patent Application Publication 2013/0015812 in be further described, its is complete
Portion's content is incorporated herein by reference.
Referring now to Fig. 3, the block diagram of VFO circuits 24 is shown.VFO circuits 24 include voltage controlled oscillator (VCO) 71, amplification
Device 70, electric voltage observation circuit 73, current monitoring circuit 74 and phase detecting circuit 72.VCO 71 and amplifier 70 input electricity
Communication.Carry outside between transducer 18 and VCO 71 and backfeed loop is provided.Backfeed loop includes logical with the electricity of phase detecting circuit 72
The electric voltage observation circuit 73 and current monitoring circuit 74 of letter.Electric voltage observation circuit 73 measures the electricity for being input to outer load transducer 18
Pressure, and current monitoring circuit 74 measures the electric current for being input to outer load transducer 18.Phase detecting circuit 72 is configured as measuring
The phase difference between the voltage and current of the input of transducer 18 is carried outside.Phase detecting circuit 72 is supplied to output with control
The VCO 71 of the frequency of 67a electric current is held to be electrically coupled.
Whether phase detecting circuit 72 is configured to determine that voltage and current in predetermined phase range.If phase
Difference is not in desired scope, then the voltage output change of phase detecting circuit 72, thus increases or reduce VCO 71 frequency,
And thus increase or reduce the frequency of VFO circuits 24, until phase difference is fallen into desired scope.Output voltage and electric current
Monitoring is persistently carried out during the operation of charging system 12, and enters line frequency regulation as needed based on phase difference.Then, power
Transmitter 16 adjusts the frequency for the power for being supplied to outer load transducer 18, to ensure that it is desired that charging system power efficiency maintains
It is horizontal.In one embodiment, it is preferred that charging system power efficiency be at least 85%.Preferably, the work frequency of VFO circuits 24
Rate scope is from about 15kHz to 200kHz.
Referring now to Figure 4, curve map 69 shows output 67a, 67b conduct in the VFO circuits 24 of power transmitter 16
The AC current measurement results 77 of the function of time and the example of AC voltage measurements 78.AC current measurement results 77 and AC voltages
Measurement result 78 is a certain amount of sine wave of out-phase, and the amount is by the angular phase difference or phase difference that are indicated herein by reference 79
Φ is represented.(that is, pine is magnetic-coupled) energy transmission for carrying the resonance between transducer 18 and vehicle-mounted transducer 20 outside,
Phase difference transmits, phase difference preferably in the range of about 10 degree to about 15 degree for (that is, tightly coupled) energy of sensing
About 0 to 2 spend to ensure the optimal charge system-power efficiency of charging system 12.Phase difference consider part tolerance, temperature with
And the influence of the outer alignment for carrying transducer 18 and vehicle-mounted transducer 20.
Therefore, including the charging system 12 of VFO circuits 24 design determine voltage and current waveform whether predetermined
In phase range, the scope ensures that the charging system power efficiency for being delivered to battery 14 is in optimum level.Phase difference is by filling
Electric system 12 is analyzed, and is more specifically analyzed by the controller in VFO circuits 24, so as to maintain the optimal of charging system power efficiency
It is horizontal.It is input in analysis after the waveform of the voltage and current of outer load transducer 18, controller output is operable as adjusting VCO
The voltage of frequency in 71 so that the output signal to outer load transducer 18 of power transmitter 16 maintains desired Charging
System power efficiency.When this also ensures that outer load transducer 18 with vehicle-mounted 20 loose coupling of transducer, the phase difference dimension of voltage and current
Hold at about 15 degree, and when outer load transducer 18 is with vehicle-mounted 20 close coupling of transducer, phase difference maintains zero (0) degree.Therefore, fill
Electric system 12 determines that transducer 18,20 is loose coupling or close coupling using angular phasing difference.
Charging system 12 can also use the voltage and current number from controller/converter 53 via Radio Link 65
According to will enter into the power of outer load transducer 18 compared with the power exported by vehicle-mounted transducer 20.VFO circuits 24
Frequency can also be adjusted to make that system-power efficiency maximizes and regulating frequency is to maintain desired angular phase difference, or
The frequency of VFO circuits 24 can also be adjusted to maximize system-power efficiency so as to replace regulating frequency to remain desired
Angular phase difference.
It should be noted that the value of angular phase difference is determined in advance as the predetermined model in the value corresponding with scheduled frequency range
In enclosing, the preset frequency is associated with wireless transmission mechanism described previously herein (that is, close coupling or loose coupling).Charging system 12 can
To be configured as the output frequency by the scanning VFO circuits 24 in the wide scope (for example, from about 15kHz to 200kHz) of frequency
And be then scanned in the range of with output frequency and measuring system power efficiency and phase difference come to determine transducer 18,20 be tight
Coupling or loose coupling.Measurement result based on system effectiveness and phase difference, charging system 12 can determine transducer 18,20
It is close coupling or loose coupling, and operating frequency range and desired phase range is correspondingly set.
With reference now to the VFO circuits 225 in Fig. 5, showing replacement.Those elements shown in VFO circuits 24 with Fig. 3
Similar element has the reference that difference is 200.Similar with above-mentioned VFO circuits 24, VFO circuits 225 are shaken using voltage-controlled
Swing device (VCO) 271, amplifier 270, electric voltage observation circuit 273, current monitoring circuit 274 and phase detecting circuit 272.Phase
Position detection circuit 272 includes flip-flop circuit 287 and controller 288.Flip-flop circuit 287 provides multiple meters to controller 288
Number, it is allowed to which controller 288 determines in output 299 voltage that provides to control VCO 271 frequency.Resistance 281-284,289
Electric signal is allowed to be biased in correct voltage level.Current monitoring circuit 274 is electrically connected to offer from amplifier 270
The sensing coil 285 of the current measurement result of output.VCO 271 and amplifier 270 input telecommunication.Voltage signal is by signal
Path 292,293 carries, and is received by electric voltage observation circuit 273.Current signal is carried by signal path 290,291, and by electricity
Stream observation circuit 274 receives.Flip-flop circuit 287 receives the output 296 from electric voltage observation circuit 273 and supervised from electric current
The output 297 of slowdown monitoring circuit 274.The output 298 of flip-flop circuit 287 is received by controller 288.VCO 271 is received from control
The output 299 of device 288.For example, if zero electric pulse slave flipflop is output to controller 288, VCO 271 need not be adjusted
Frequency.If due to the feedback of electric voltage observation circuit 273 and current monitoring circuit 274, the umber of pulse of the output of trigger is big
In zero pulse, then the related voltage-regulation to VFO of the amount of the feedback signal to being received may occur.
Alternatively, the phase detecting circuit 72 of VFO circuits 24 can include embedded controller.For example, such electricity
The other electrically block/electric components that can be eliminated in VFO circuits 24 are realized on road, simplify circuit design, there is provided lower cost.
Referring again to Fig. 3, the function of allowing to be incorporated to using embedded controller so that may not be needed electric voltage observation circuit 7, electric current prison
Slowdown monitoring circuit 74, phase detecting circuit 72 and VCO 71.Similarly,, may when using embedded controller referring again to Fig. 5
Electric voltage observation circuit 273, current monitoring circuit 274, flip-flop circuit 287, controller 288 and VCO 271 are not needed.
Turning now to Fig. 2, the enhanced charging system 12a for also including integration charger 60 and change-over switch 57 is shown.
Integration charger 60 and change-over switch 57 be arranged in vehicle 40 and with power transmitter 16, outer load transducer 18 and vehicle-mounted transducing
Device 20 coordinates to provide electric current so as to be charged to battery 14.Controller/converter 53, integration charger 60 and change-over switch 57 wrap
Include the electric component to form electric signal shaping device 45.
Assisted charging system 62 (that is, standby charging system) can also enter with the integration charger 60 being arranged in vehicle 40
Row telecommunication, to provide electric current when the access to wireless charging system 12 is unavailable to be charged to battery 14.Auxiliary charging system
System 62 advantageously provide battery 14 is charged increasing convenient alternating pattern.
Change-over switch 57 is operatively controlled via signal wire 55 by the controller part of controller/converter 53, with
Switch between assisted charging system 62 and wireless charging system 12.The carrying of output 52 electric signal as caused by vehicle-mounted transducer 20,
The electric signal is received by the convenor section of controller/converter 53.Conversion of the carrying of output 56 from controller/converter 53
The electric signal of device, the electric signal are received by change-over switch 57.The carrying of output 58 is from change-over switch 57 to the electric signal of battery 14.It is all
As the communication data bus 54 of controller zone network (CAN) bus etc and the controller part of controller/converter 53 lead to
Letter, to receive vehicle data information or by vehicle data information transmission to enhanced charging system 12a, or reception charging system
Charging system data are sent to other electrical equipments being arranged in vehicle 40 by data.
Wheel 51a, 51b, 51c, 51d of vehicle 40 are as an aid in pair of vehicle-mounted transducer 20 and outer load transducer 18
It is accurate.The alignment device 99 of such as wheel retainer 63 etc can further aid in this of outer load transducer 18 and vehicle-mounted transducer 20
Kind alignment.In addition, alignment device 64 can also auxiliary positioning vehicle 40 so that outer transducer 18 and the vehicle-mounted transducer 20 of carrying is by just
Really it is aligned.Need externally to carry transducer 18 and vehicle-mounted transducer 20 is aligned to optimize from outer load transducer 18 to vehicular changeable
The energy transmission of energy device 20.As shown in Fig. 2 when the outer load transducer 18 of at least a portion covering of vehicle-mounted transducer 20, may
The outer alignment for carrying transducer 18 and vehicle-mounted transducer 20 occurs, as Fig. 2 is best seen.Alternatively, when outer load transducer 18
It is sufficiently spaced with vehicle-mounted transducer 20, but allows being wirelessly transferred for energy occurs between them so as to vehicle 40
Battery 14 when charging, it may occur however that the outer alignment for carrying transducer 18 and vehicle-mounted transducer 20
Assisted charging system 62 produces the output 61 that carrying is integrated the electric signal of the reception of charger 60, and this integrates and filled
Electrical equipment 60 produces the output 59 for the electric signal that carrying is received by change-over switch 57.Therefore, sane charging system is had been presented for
12, it adjusts the working frequency of charging system 12 to provide optimal charging system power efficiency.In addition, the charging system 12 can
Be configured as across close coupling or the outer load transducer 18 of loose coupling and vehicle-mounted transducer 20 to the distance between Wireless transceiver
Magnetic energy.The frequency of electric signal is effectively managed using VFO circuits 24, so as to maintain to be supplied to the voltage and electricity of outer load transducer 18
Phase difference between stream, to provide optimal charging system power efficiency.
Charging system is made up of electric components such as resistor, capacitor, repeaters, and these parts are generally electrically being led
Can commercially it be acquired in domain.VCO 71 can be purchased as in the usual available part of frequency interested.Phase is examined
Slowdown monitoring circuit 272 simply can be made up of flip-flop circuit 287 and controller 288.
Charging system 12 can also determine the system-power efficiency between outer load transducer 18 and vehicle-mounted transducer 20, and enter
One step section working frequency is to provide optimal charging system power efficiency.
Although the present invention has been described according to a preferred embodiment of the invention, it is not intended that limited to this, but
Only it is limited in the range of subsequent claims illustrate.In addition, the use of the grade of term first, second do not indicate that it is any
Important order, opposite term first, second etc. is used to a key element being distinguished with another key element.In addition, term one, one
The use of individual grade does not indicate that the limitation to amount, but at least one presence of item recited in representing.
Claims (11)
1. one kind is configured as the charging system (12) to energy storage device (14) wireless charging, the system (12) includes：
Electrical power transmitter (16), the electrical power transmitter (16) include being configured as sending with alternating current, alternating current
The variable oscillator (71) of the electrical power of pressure and frequency；
Controller (53), the controller (53) are operable as adjusting the variable oscillator (71), thus change and are sent out
The frequency of the electrical power gone out；
Outer load transducer (18), the outer load transducer (18) and the electrical power transmitter (16) telecommunication, the outer load are changed
Energy device (18) is configured as being electromagnetically coupled to the vehicle-mounted transducer (20) with the energy storage device (14) telecommunication, thus draws
Vehicle-mounted transducer (20) the capture electrical power is played to be charged to the energy storage device (14)；And
Phase detecting circuit (72), the phase detecting circuit (72) and the controller (53) and the outer load transducer (18)
Communicate and be configured to determine that the phase difference between the alternating voltage and the alternating current, wherein the controller (53) quilt
Be configured to the phase difference adjust the variable oscillator (71) so that the sent electrical power it is described
Frequency maintains the phase difference in desired scope.
2. system (12) according to claim 1, wherein the controller (53) is configured as adjusting the variable frequency
Oscillator (71) so that the frequency of the sent electrical power is in the frequency range of 10 kilo hertzs (kHz) to 450kHz
Scanning.
3. system (12) according to claim 1, in addition to the wireless launcher with the controller (53) telecommunication
(65), wherein the power-sensing circuit of value of the vehicular changeable energy device (20) with being configured to determine that the captured electrical power
(24) telecommunication, wherein the power-sensing circuit (24) and being configured as via the wireless launcher (65) to the control
Wireless receiver (65) telecommunication of the value for the electrical power being captured described in device (53) Wireless transceiver, and wherein described controller
(53) it is configured as by the way that the value of the value of the captured electrical power and the sent electrical power is compared to really
Determine power efficiency.
4. system (12) according to claim 3, wherein the controller (53) is configured as being based on the power efficiency
Adjust the variable oscillator (71) so that the frequency of the sent electrical power makes the power efficiency maximum
Change.
5. system (12) according to claim 1, wherein the desired scope of the phase difference is in 10 degree and 21 degree
Between.
6. system (12) according to claim 5, wherein the desired scope of the phase difference is in 10 degree and 15 degree
Between.
7. system (12) according to claim 6, wherein the desired scope of the phase difference 0 degree and 10 degree it
Between.
8. system (12) according to claim 7, wherein the phase difference is about 0 degree.
9. system (12) according to claim 1, wherein the vehicular changeable energy device (20) and the energy storage device
(14) it is arranged in vehicle (40).
10. system (12) according to claim 9, wherein the outer load transducer (18) and the electrical power transmitter
(16) it is arranged on the vehicle (40) outside.
11. one kind is configured as the charging system (12) to energy storage device (14) wireless charging, the system (12) includes：
Electrical power transmitter (16), the electrical power transmitter (16) include being configured as sending with alternating current, alternating current
The variable oscillator (71) of the electrical power of pressure and frequency；
Controller (53), the controller (53) are operable as adjusting the variable oscillator (71), thus described in change
The frequency of the electrical power sent；
Outer load transducer (18), the outer load transducer (18) and the electrical power transmitter (16) telecommunication, the outer load are changed
Energy device (18) is configured as being electromagnetically coupled to the vehicle-mounted transducer (20) with the energy storage device (14) telecommunication, thus draws
Vehicle-mounted transducer (20) the capture electrical power is played to be charged to the energy storage device (14)；And
Wireless launcher (65), the wireless launcher (65) and the controller (53) telecommunication, wherein the vehicular changeable energy
Power-sensing circuit (24) telecommunication of value of the device (20) with being configured to determine that the captured electrical power, wherein the work(
Rate detection circuit (24) is with being configured as via quilt described in the wireless launcher (65) to the controller (53) Wireless transceiver
Wireless receiver (65) telecommunication of the value of the electrical power of capture, wherein the controller (53) is configured as by by the quilt
The value of the value of the electrical power of capture and the sent electrical power is compared to determine power efficiency, and wherein described control
Device (53) processed is configured as adjusting the variable oscillator (71) based on the power efficiency so that the sent electricity
The frequency of power maximizes the power efficiency.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14/708,526 | 2015-05-11 | ||
| US14/708,526 US9725003B2 (en) | 2011-08-06 | 2015-05-11 | Wireless battery charging system varying magnetic field frequency to maintain a desired voltage-current phase relationship |
| PCT/US2016/031601 WO2016183058A1 (en) | 2015-05-11 | 2016-05-10 | Wireless battery charging system varying magnetic field frequency to maintain a desire voltage-current phase relationship |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107683555A true CN107683555A (en) | 2018-02-09 |
Family
ID=57248427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680027367.XA Withdrawn CN107683555A (en) | 2015-05-11 | 2016-05-10 | Change field frequency to maintain the wireless battery charging system of the phase relation of desired voltage x current |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP3294588A4 (en) |
| JP (1) | JP2018522513A (en) |
| KR (1) | KR20170135950A (en) |
| CN (1) | CN107683555A (en) |
| WO (1) | WO2016183058A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112260719A (en) * | 2020-05-28 | 2021-01-22 | 蜂巢能源科技有限公司 | Frequency hopping communication method for wireless battery management and system applying same |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016101246A1 (en) | 2015-11-02 | 2017-05-04 | Epcos Ag | Sensor arrangement and method for producing a sensor arrangement |
| CN114475292B (en) * | 2021-12-30 | 2024-03-08 | 福州大学 | Integrated structure of wireless charging system and vehicle-mounted charging system of electric automobile |
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- 2016-05-10 KR KR1020177032511A patent/KR20170135950A/en not_active Application Discontinuation
- 2016-05-10 CN CN201680027367.XA patent/CN107683555A/en not_active Withdrawn
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- 2016-05-10 WO PCT/US2016/031601 patent/WO2016183058A1/en unknown
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| JP2010268665A (en) * | 2009-05-18 | 2010-11-25 | Toyota Motor Corp | Coil unit, noncontact power transmission device, noncontact power feed system, and vehicle |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2018522513A (en) | 2018-08-09 |
| KR20170135950A (en) | 2017-12-08 |
| WO2016183058A1 (en) | 2016-11-17 |
| EP3294588A4 (en) | 2018-11-14 |
| EP3294588A1 (en) | 2018-03-21 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20181205 Address after: Babado J San Michaele Applicant after: Amberford Technology Co., Ltd. Address before: michigan Applicant before: Delphi Automotive Systems LLC (US) |
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