CN107959334A - Novel radio charging system - Google Patents
Novel radio charging system Download PDFInfo
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- CN107959334A CN107959334A CN201711348946.7A CN201711348946A CN107959334A CN 107959334 A CN107959334 A CN 107959334A CN 201711348946 A CN201711348946 A CN 201711348946A CN 107959334 A CN107959334 A CN 107959334A
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Classifications
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- H02J7/025—
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—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
-
- 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
- H02J50/70—Circuit arrangements or systems for wireless supply or distribution of electric power involving the reduction of electric, magnetic or electromagnetic leakage fields
-
- H02J7/045—
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/12—Arrangements for reducing harmonics from ac input or output
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M7/2173—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a biphase or polyphase circuit arrangement
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M7/219—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a bridge configuration
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
- H02M7/53871—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/539—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters with automatic control of output wave form or frequency
- H02M7/5395—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters with automatic control of output wave form or frequency by pulse-width modulation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0048—Circuits or arrangements for reducing losses
- H02M1/0054—Transistor switching losses
- H02M1/0058—Transistor switching losses by employing soft switching techniques, i.e. commutation of transistors when applied voltage is zero or when current flow is zero
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/12—Arrangements for reducing harmonics from ac input or output
- H02M1/123—Suppression of common mode voltage or current
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Dc-Dc Converters (AREA)
Abstract
A kind of novel radio charging system provided by the invention, transmitting terminal include power conversion modules, power conversion control module, transmitting coil and transmitting resonant capacitance；The input termination alternating current of power conversion modules, output terminal is in parallel with the transmitting resonant capacitance, and transmitting coil is in parallel with transmitting resonant capacitance；Receiving terminal includes receiving coil, receives resonant capacitance, rectification module and rectification control module；Receiving coil connects the input terminal of rectification module by the reception resonant capacitance of connecting, the output terminating load of rectification module, wireless closed-loop is formed by power conversion control module and rectification control module to feed back, system is not susceptible to voltage overshoot, it is relatively low that transmitting terminal resonant capacitance is pressure-resistant, and dispatch coil is not added with magnetic core, reduces system bulk and weight, system reliability is added, reduces cost.Meanwhile transmitting-receiving two-end the air gap tolerance limit is higher, and transmitting coil and receiving coil can not have to stringent center alignment, raising wireless charging delivery efficiency when effectively charging.
Description
Technical field
The invention belongs to wireless charging technical field, and in particular to novel radio charging system.
Background technology
Transmitting terminal is connected using transmitting coil and resonant capacitance more in current wireless charging system, receiving terminal receiving coil
Connect with resonant capacitance, and dispatch coil is all planar structure.System by adjust input voltage amplitude or pulse width come
Adjust output power and whole system does not have backfeed loop to be in open loop situations.This system structure and it is operated in open loop situations and leads
Cause delivery efficiency relatively low, during Condition of Sudden Unloading, output voltage easily occurs overshoot and burns device, while adds transmitting terminal resonant capacitance
Resistance to pressure, and to cause system bulk to increase since there are magnetic core, reliability reduces.
The content of the invention
For in the prior art the defects of, the present invention provides novel radio charging system, and delivery efficiency is high, cost is low, can
By property height.
A kind of novel radio charging system, including transmitting terminal and receiving terminal,
The transmitting terminal include EMC filter modules, power conversion modules, power conversion control module, transmitting coil and
Launch resonant capacitance；The input termination alternating current of the EMC filter modules, output termination power conversion modules input terminal；The work(
Rate conversion module output terminal is in parallel with the transmitting resonant capacitance, and the transmitting coil is in parallel with transmitting resonant capacitance；The hair
After penetrating square wave of the end for alternating current to be converted to specific frequency by power conversion modules, electricity is converted into by the transmitting coil
Magnetostatic wave signal is sent；The power conversion control module is used to receive the Regulate signal from receiving terminal, and according to Regulate signal
The phase shifting angle of four road driving pulses of power conversion modules is adjusted, so as to adjust the voltage and electricity of power conversion modules output terminal
Stream；
The receiving terminal includes receiving coil, receives resonant capacitance, rectification module and rectification control module；The reception line
Circle connects the input terminal of rectification module, the output terminating load of rectification module by the reception resonant capacitance of connecting；The reception
End is used for after receiving electromagnetic wave signal by receiving coil, is exported by rectification module rectification；The rectification control module is used for
The output signal of rectification module is sampled, and according to output signal generation Regulate signal, is sent to transmitting terminal.
Further, the transmitting coil is the cylindrical helical structure formed along cylindrical generatrix coiling；It is described to connect
Take-up circle is that coiling forms planar spiral structures in a plane.
Further, the receiving coil is generally oval.
Further, the EMC filter modules include lightning protection circuit, the first filter circuit, the second filter circuit and rectification
Bridge D5；
The transmitting terminal accesses alternating current by two-phase, three-wire plug, the output terminal of two-pin plug by terminal J1, terminal J2,
Terminal J3 connects lightning protection circuit；The lightning protection circuit includes varistor MOV1, varistor MOV2, varistor MOV3, insurance
Silk F1 and gas-discharge tube G1；, pressure in parallel with varistor MOV3 after wherein varistor MOV1 and varistor MOV2 series connection
For the points of common connection of quick resistance MOV1 and varistor MOV2 by inline fuse F1 connecting terminal J2, varistor MOV2's is another
The other end of one end connecting terminal J1, varistor MOV1 pass through gas-discharge tube G1 connecting terminal J3, gas-discharge tube G1 and terminal
Tie point ground connection between J3；
First filter circuit includes safety capacitance CX1, safety capacitance CY1, safety capacitance CY2 and common mode inductance L1；
Wherein, it is in parallel with safety capacitance CX1 after safety capacitance CY1 and safety capacitance CY2 series connection；Safety capacitance CX1 and varistor
MOV2 is in parallel, and safety capacitance CX1 is in parallel with common mode inductance L1 one end；The points of common connection of safety capacitance CY1 and safety capacitance CY2
Ground connection；
Second filter circuit includes safety capacitance CX2, safety capacitance CY3, safety capacitance CY4 and common mode inductance L2；
Wherein, safety capacitance CX2 and common mode inductance L1 in parallel with safety capacitance CX2 after safety capacitance CY3 and safety capacitance CY4 series connection
The other end is in parallel；The points of common connection ground connection of safety capacitance CY3, safety capacitance CY4；Safety capacitance CX2 and common mode inductance L2 mono-
End is in parallel；The common mode inductance L2 other ends connect an input terminal of rectifier bridge D5 respectively, and by being sequentially connected in series fuse F2 and wink
State diode TH1 connects another input terminal of rectifier bridge D5；
The output terminal of the rectifier bridge D5 is the output terminal of the EMC filter modules.
Further, the power conversion modules include PFC boost circuit and phase whole-bridging circuit；The PFC boost electricity
The input termination EMC filter module output terminals on road；The input termination power conversion control module of the phase whole-bridging circuit, phase shift
The output terminal of full-bridge circuit is in parallel with the transmitting resonant capacitance.
Further, the PFC boost circuit includes the first boosting branch in parallel and the second boosting branch；
First boosting branch includes driving chip U1, field-effect tube Q3, inductance L3, booster diode D8 and current transformer
T1A；The input of driving chip U1 terminates the power conversion control module, and inductance L3 mono- terminates the defeated of the EMC filter modules
Outlet, the Same Name of Ends of another termination booster diode D8 cathodes and current transformer T1A, the different name termination of current transformer T1A
The drain electrode of field-effect tube Q3；
Second boosting branch includes driving chip U2, field-effect tube Q4, inductance L4, booster diode D10 and Current Mutual Inductance
Device T2A；The input of driving chip U2 terminates the power conversion control module, and inductance L4 mono- terminates the EMC filter modules
Output terminal, the Same Name of Ends of another termination booster diode D10 cathodes and current transformer T2A, the different name end of current transformer T2A
Connect the drain electrode of field-effect tube Q4.
Further, the phase whole-bridging circuit is complete including the one 4 road phase-shifting full-bridge driving chip U3, the 2nd 4 tunnel phase shift
Bridge driving chip, field-effect tube Q11, field-effect tube Q12, field-effect tube Q13 and field-effect tube Q14；
It is electrically connected described in the input terminal of one 4 road phase-shifting full-bridge driving chip U3 with power conversion control module, the one 4 tunnel
Two output terminals of phase-shifting full-bridge driving chip U3 connect the grid and field-effect tube of field-effect tube Q11 by totem-pote circuit respectively
The grid of Q12；
It is electrically connected described in the input terminal of 2nd 4 road phase-shifting full-bridge driving chip U4 with power conversion control module, the 2nd 4 tunnel
Two output terminals of phase-shifting full-bridge driving chip U4 connect the grid and field-effect tube of field-effect tube Q13 by totem-pote circuit respectively
The grid of Q14；
Field-effect tube Q11 connects to form the first branch with field-effect tube Q12, and field-effect tube Q13 connects with field-effect tube Q14
Form the second branch, the first branch and the second branch formation bridge circuit in parallel；Resistance R48, resistance R49, capacitance C20 go here and there successively
Connection, and it is in parallel with the center output point of the bridge circuit；One end of bridge circuit center output point connects common mode by inductance L6
An input terminal of inductance T3, another input terminal of another termination common mode inductance T3 of bridge circuit center output point；Common mode inductance
The output terminal of T3 is the output terminal of phase-shifting full-bridge.
Further, the natural resonance frequency in parallel of the transmitting coil and transmitting resonant capacitance is controlled equal to phase-shifting full-bridge
The driving frequency of module.
Further, the series connection intrinsic frequency of the receiving coil and reception resonant capacitance is equal to phase-shifting full-bridge control module
Driving frequency.
Further, the rectification module includes terminal J1, terminal J2, terminal J6, terminal J10, rectifier diode D1, whole
Flow diode D4, rectifier diode D8, rectifier diode D10, capacitance C2, capacitance C3, relay RELAY1, relay
RELAY2, resistance R10, resistance R11, resistance R12 and resistance R13；
Wherein, terminal J2 connects the anode of rectifier diode D4 and the cathode of rectifier diode D8；Terminal J1 connects two pole of rectification
The anode of pipe D1 and the cathode of rectifier diode D10；The cathode of rectifier diode D1 and rectifier diode D4 pass through relay
RELAY1 connecting terminals J6；The anode of rectifier diode D8 and rectifier diode D10 by resistance R10, resistance R11, resistance R12,
Resistance R13 connecting terminals J10；Capacitance C2, capacitance C3 are connected between rectifier diode D4 cathodes and rectifier diode D8 anodes；
Terminal J1 and terminal J2 is the input terminal of rectification module；Terminal J6 and terminal J10 is the output terminal of rectification module.
As shown from the above technical solution, novel radio charging system provided by the invention, transmitting terminal Parallel opertation, is not easy to send out
Raw voltage overshoot.It is relatively low that transmitting-receiving two-end resonant capacitance is pressure-resistant, and dispatch coil is not added with magnetic core, reduces system bulk and again
Amount, adds system reliability, reduces cost.Meanwhile transmitting-receiving two-end the air gap tolerance limit is higher, and effectively charge when launch
Coil can not have to stringent center alignment with receiving coil, improve wireless charging delivery efficiency.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution of the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described.In all of the figs, similar element
Or part is generally identified by similar reference numeral.In attached drawing, each element or part might not be drawn according to actual ratio.
Fig. 1 is the module frame chart of novel radio charging system in embodiment one.
Fig. 2 is the structure diagram of transmitting coil and transmitting resonant capacitance in embodiment one.
Fig. 3 is the structure diagram of receiving coil and reception resonant capacitance in embodiment one.
Fig. 4 is EMC filter module circuit diagrams in embodiment two.
Fig. 5 is PFC boost module circuit diagram in embodiment two.
Fig. 6 is phase-shifting full-bridge module circuit diagram in embodiment two.
Fig. 7 is rectification module circuit diagram in embodiment three.
Embodiment
The embodiment of technical solution of the present invention is described in detail below in conjunction with attached drawing.Following embodiments are only used for
Clearly illustrate technical scheme, therefore be only used as example, and the protection model of the present invention cannot be limited with this
Enclose.It should be noted that unless otherwise indicated, technical term or scientific terminology used in this application are should be belonging to the present invention
The ordinary meaning that field technology personnel are understood.
It should be noted that：Similar label and letter represents similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent attached drawing in a attached drawing.
In addition, term " first ", " second " etc. are only used for description purpose, and it is not intended that indicating or implying relatively important
Property or the implicit quantity for indicating indicated technical characteristic.In the description of the present invention, " multiple " are meant that two or more,
Unless otherwise specifically defined.
Embodiment one：
A kind of novel radio charging system, as shown in Figs. 1-3, including transmitting terminal and receiving terminal,
The transmitting terminal include EMC filter modules, power conversion modules, power conversion control module, transmitting coil and
Launch resonant capacitance；The input termination alternating current of the EMC filter modules, output termination power conversion modules input terminal；The work(
Rate conversion module output terminal is in parallel with the transmitting resonant capacitance, and the transmitting coil is in parallel with transmitting resonant capacitance；The hair
After penetrating square wave of the end for alternating current to be converted to specific frequency by power conversion modules, electricity is converted into by the transmitting coil
Magnetostatic wave signal is sent；The power conversion control module is used to receive the Regulate signal from receiving terminal, and according to Regulate signal
The phase shifting angle of four road driving pulses of power conversion modules is adjusted, so as to adjust the voltage and electricity of power conversion modules output terminal
Stream；
The receiving terminal includes receiving coil, receives resonant capacitance, rectification module and rectification control module；The reception line
Circle connects the input terminal of rectification module, the output terminating load of rectification module by the reception resonant capacitance of connecting；The reception
End is used for after receiving electromagnetic wave signal by receiving coil, is exported by rectification module rectification；The rectification control module is used for
The output signal of rectification module is sampled, and according to output signal generation Regulate signal, transmitting terminal is sent to, so that the system is sent out
Penetrate end and receiving terminal forms a closed loop feedback system.
The natural resonance frequency in parallel of the transmitting coil and transmitting resonant capacitance is equal to the drive of phase-shifting full-bridge control module
Dynamic frequency.The receiving coil and driving frequency of the series connection intrinsic frequency equal to phase-shifting full-bridge control module for receiving resonant capacitance
Rate.The wireless charging system electromagnetic wave rated frequency is 20KHz, and frequency is low, and the switching loss of switching tube is small, improves system effect
Rate, radiation is small, reduces EMC filter circuit volume, reduces system cost.
If the transmitting resonant capacitance series connection of transmitting terminal, belongs to voltage resonance so that output voltage is not easy to adjust, is not easy
Voltage stabilizing, easily occurs output overvoltage and burns device.And the transmitting resonant capacitance of transmitting terminal of the present invention is in parallel, belong to current resonance,
Closed loop feedback is formed by the wireless communication module of transmitting terminal and receiving terminal so that system output is more prone to adjust, output electricity
Pressure adjustable range is big, and output current adjustable range is big, is not susceptible to the situation of voltage overshoot.
The wireless charging system, it is relatively low that transmitting-receiving two-end resonant capacitance is pressure-resistant, and dispatch coil is not added with magnetic core, reduces and is
System volume and weight, adds system reliability, reduces cost, improves wireless charging delivery efficiency.Meanwhile transmitting-receiving two-end air
Gap tolerances are higher, and transmitting coil and receiving coil can not have to stringent center alignment when effectively charging, more meet currently without
Micro USB electrical environment.
The transmitting coil is the cylindrical helical structure formed along cylindrical generatrix coiling；The receiving coil be
Coiling forms planar spiral structures in one plane.The transmitting coil output current is big, it is not necessary to which extra increase magnetic core is defeated to improve
Go out electric current, reduce cost, while it also avoid the frangible function of magnetic core.The receiving coil is generally oval.
Embodiment two：
As Figure 4-Figure 6, embodiment two adds the circuit of transmitting terminal on the basis of embodiment one.In order to save version
Face, a capacitance or a resistance have only been drawn in some places in Fig. 4-6, but label has marked multiple capacitances or resistance, its table
What is shown is that multiple capacitances are in parallel, or multiple resistor coupled in parallel.Such as in Fig. 7, resistance R10, resistance R11, resistance R12 and resistance
R13 is in parallel.Capacitance C1, capacitance C7, capacitance C9, capacitance C10, capacitance C36 and capacitance C37 are in parallel.
The power conversion control module includes PFC control module and phase-shifting full-bridge control module；The PFC control module
For controlling PFC boost circuit；The phase-shifting full-bridge control module is used to control phase whole-bridging circuit.
The EMC filter modules include lightning protection circuit, the first filter circuit, the second filter circuit and rectifier bridge D5；
The transmitting terminal accesses alternating current by two-phase, three-wire plug, the output terminal of two-pin plug by terminal J1, terminal J2,
Terminal J3 connects lightning protection circuit；The lightning protection circuit includes varistor MOV1, varistor MOV2, varistor MOV3, insurance
Silk F1 and gas-discharge tube G1；, pressure in parallel with varistor MOV3 after wherein varistor MOV1 and varistor MOV2 series connection
For the points of common connection of quick resistance MOV1 and varistor MOV2 by inline fuse F1 connecting terminal J2, varistor MOV2's is another
The other end of one end connecting terminal J1, varistor MOV1 pass through gas-discharge tube G1 connecting terminal J3, gas-discharge tube G1 and terminal
Tie point ground connection between J3；
First filter circuit includes safety capacitance CX1, safety capacitance CY1, safety capacitance CY2 and common mode inductance L1；
Wherein, it is in parallel with safety capacitance CX1 after safety capacitance CY1 and safety capacitance CY2 series connection；Safety capacitance CX1 and varistor
MOV2 is in parallel, and safety capacitance CX1 is in parallel with common mode inductance L1 one end；The points of common connection of safety capacitance CY1 and safety capacitance CY2
Ground connection；
Second filter circuit includes safety capacitance CX2, safety capacitance CY3, safety capacitance CY4 and common mode inductance L2；
Wherein, safety capacitance CX2 and common mode inductance L1 in parallel with safety capacitance CX2 after safety capacitance CY3 and safety capacitance CY4 series connection
The other end is in parallel；The points of common connection ground connection of safety capacitance CY3, safety capacitance CY4；Safety capacitance CX2 and common mode inductance L2 mono-
End is in parallel；The common mode inductance L2 other ends connect an input terminal of rectifier bridge D5 respectively, and by being sequentially connected in series fuse F2 and wink
State diode TH1 connects another input terminal of rectifier bridge D5；
The output terminal of the rectifier bridge D5 is the output terminal of the EMC filter modules.
Specifically, the electromagnetic wave which is 20KHz dedicated for filtering rated frequency, it is small, it is portable.
The power conversion modules include PFC boost circuit and phase whole-bridging circuit；The input terminal of the PFC boost circuit
Connect EMC filter module output terminals；The input termination power conversion control module of the phase whole-bridging circuit, phase whole-bridging circuit
Output terminal is in parallel with the transmitting resonant capacitance.
The PFC boost circuit includes the first boosting branch in parallel and the second boosting branch；
First boosting branch includes driving chip U1, field-effect tube Q3, inductance L3, booster diode D8 and current transformer
T1A；The input of driving chip U1 terminates the power conversion control module, and inductance L3 mono- terminates the defeated of the EMC filter modules
Outlet, the Same Name of Ends of another termination booster diode D8 cathodes and current transformer T1A, the different name termination of current transformer T1A
The drain electrode of field-effect tube Q3；
Second boosting branch includes driving chip U2, field-effect tube Q4, inductance L4, booster diode D10 and Current Mutual Inductance
Device T2A；The input of driving chip U2 terminates the power conversion control module, and inductance L4 mono- terminates the EMC filter modules
Output terminal, the Same Name of Ends of another termination booster diode D10 cathodes and current transformer T2A, the different name end of current transformer T2A
Connect the drain electrode of field-effect tube Q4.
Specifically, in the first boosting branch, the output terminal of PFC boost circuit can also connect energy storage filter condenser C12,
C13, C14 and C35.The input terminal of driving chip U1 accesses the drive of the PFC control module by current-limiting resistor voltage divider R17, R18
Dynamic output terminal, current transformer T1A access the inspection stream end of the PFC control module by the rectification of C10, R29 and D3.
Similarly, in the second boosting branch, the input terminal of driving chip U2 passes through described in current-limiting resistor voltage divider R38, R39 access
Another drive output of PFC control module, current transformer T2A access the PFC controls by the rectification of C15, R32 and D6
Another inspection stream end of module.
The phase whole-bridging circuit includes the one 4 road phase-shifting full-bridge driving chip U3, the 2nd 4 road phase-shifting full-bridge driving core
Piece, field-effect tube Q11, field-effect tube Q12, field-effect tube Q13 and field-effect tube Q14；
It is electrically connected described in the input terminal of one 4 road phase-shifting full-bridge driving chip U3 with power conversion control module, the one 4 tunnel
Two output terminals of phase-shifting full-bridge driving chip U3 connect the grid and field-effect tube of field-effect tube Q11 by totem-pote circuit respectively
The grid of Q12；
It is electrically connected described in the input terminal of 2nd 4 road phase-shifting full-bridge driving chip U4 with power conversion control module, the 2nd 4 tunnel
Two output terminals of phase-shifting full-bridge driving chip U4 connect the grid and field-effect tube of field-effect tube Q13 by totem-pote circuit respectively
The grid of Q14；
Field-effect tube Q11 connects to form the first branch with field-effect tube Q12, and field-effect tube Q13 connects with field-effect tube Q14
Form the second branch, the first branch and the second branch formation bridge circuit in parallel；Resistance R48, resistance R49, capacitance C20 go here and there successively
Connection, and it is in parallel with the center output point of the bridge circuit；One end of bridge circuit center output point connects common mode by inductance L6
An input terminal of inductance T3, another input terminal of another termination common mode inductance T3 of bridge circuit center output point；Common mode inductance
The output terminal of T3 is the output terminal of phase-shifting full-bridge.
Specifically, resistance R48, resistance R49, capacitance C20 together constitute RC absorbing circuits.Field-effect tube Q8, field-effect
Pipe Q9, resistance R67, resistance R69, resistance R65, resistance R66 and field-effect tube Q7, field-effect tube Q10, resistance R68, resistance R70,
Resistance R63, resistance R61 respectively constitute totem-pote circuit.The input terminal of 2nd 4 road phase-shifting full-bridge driving chip U4 passes through under current limliting
Pull-up resistor R83, R85, R88, R89 are connected to the drive output of phase-shifting full-bridge control module.
The phase whole-bridging circuit adjusts output voltage using the forearm of mobile bridge circuit and the phase angle of postbrachium
It can realize the Sofe Switch of metal-oxide-semiconductor, reduce switching loss, lifting system efficiency.Current transformer detects transmitting terminal output current
For carrying out the protection of the output overcurrent of circuit, short-circuit protection.PFC is exported by divider resistance R40, R41, R42, R43, R44
Sampled after voltage, for detecting PFC output overvoltage/undervoltages.
When it is implemented, controlling two pairs of PWM driving complementary outputs by transmitting terminal software, two pairs are adjusted by system feedback
Realize stable output and the Sofe Switch of MOS of system in the phase angle of PWM.It is complete that current transformer induced voltage signal is input to phase shift
The sampling pin of bridge control module, judges transmitting terminal output current size by sample rate current size.Signal after PFC partial pressures is defeated
Enter the sampling reference to phase-shifting full-bridge control module, judge that PFC exports overvoltage/undervoltage by sampled voltage size.
Embodiment three：
As shown in fig. 7, embodiment three on the basis of other embodiment, adds the circuit of receiving terminal.
The rectification module includes terminal J1, terminal J2, terminal J6, terminal J10, rectifier diode D1, rectifier diode
D4, rectifier diode D8, rectifier diode D10, capacitance C2, capacitance C3, relay RELAY1, relay RELAY2, resistance
R10, resistance R11, resistance R12 and resistance R13；
Wherein, terminal J2 connects the anode of rectifier diode D4 and the cathode of rectifier diode D8；Terminal J1 connects two pole of rectification
The anode of pipe D1 and the cathode of rectifier diode D10；The cathode of rectifier diode D1 and rectifier diode D4 pass through relay
RELAY1 connecting terminals J6；The anode of rectifier diode D8 and rectifier diode D10 by resistance R10, resistance R11, resistance R12,
Resistance R13 connecting terminals J10；Capacitance C2, capacitance C3 are connected between rectifier diode D4 cathodes and rectifier diode D8 anodes；
Terminal J1 and terminal J2 is the input terminal of rectification module；Terminal J6 and terminal J10 is the output terminal of rectification module.
The rectification control module includes control chip U6, wireless communication module MOD1, CAN electrical level transferring chip U10, fortune
Calculate amplifier U2, U13, power supply chip U14, U15 and its surrounding resistance, capacitance and diode.The phase-shifting full-bridge control module
Including control chip U1, wireless communication module MOD1, operational amplifier U2, voltage stabilizing chip U3 and its surrounding resistance, capacitance and two
Pole pipe
When it is implemented, output voltage, electric current are sampled by the control of receiving terminal software, at sampled value filter and amplification
After reason, transmitting terminal is sent to by wireless communication module.Controlled by transmitting terminal software and receiving terminal is received by wireless communication module
Voltage, the current signal sended over carries out PID arithmetic and is converted into the driving phase shifting angle of corresponding phase-shifting full-bridge, is closed so as to be formed
Loop back path, that realizes system stablizes output.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe is described in detail the present invention with reference to foregoing embodiments, it will be understood by those of ordinary skill in the art that：Its according to
Can so modify to the technical solution described in foregoing embodiments, either to which part or all technical characteristic into
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme, it should all cover among the claim of the present invention and the scope of specification.
Claims (10)
1. a kind of novel radio charging system, including transmitting terminal and receiving terminal, it is characterised in that
The transmitting terminal includes EMC filter modules, power conversion modules, power conversion control module, transmitting coil and transmitting
Resonant capacitance；The input termination alternating current of the EMC filter modules, output termination power conversion modules input terminal；The power becomes
It is in parallel with the transmitting resonant capacitance to change the mold block output terminal, the transmitting coil is in parallel with transmitting resonant capacitance；The transmitting terminal
After square wave for alternating current to be converted to specific frequency by power conversion modules, electromagnetic wave is converted into by the transmitting coil
Signal is sent；The power conversion control module is used to receive the Regulate signal from receiving terminal, and is adjusted according to Regulate signal
The phase shifting angle of four road driving pulses of power conversion modules, so as to adjust the voltage and current of power conversion modules output terminal；
The receiving terminal includes receiving coil, receives resonant capacitance, rectification module and rectification control module；The receiving coil leads to
Cross the input terminal that the reception resonant capacitance of connecting connects rectification module, the output terminating load of rectification module；The receiving terminal is used
After electromagnetic wave signal is received by receiving coil, exported by rectification module rectification；The rectification control module is used to sample
The output signal of rectification module, and according to output signal generation Regulate signal, it is sent to transmitting terminal.
2. novel radio charging system according to claim 1, it is characterised in that
The transmitting coil is the cylindrical helical structure formed along cylindrical generatrix coiling；The receiving coil is flat one
Coiling forms planar spiral structures on face.
3. novel radio charging system according to claim 2, it is characterised in that
The receiving coil is generally oval.
4. novel radio charging system according to claim 1, it is characterised in that
The EMC filter modules include lightning protection circuit, the first filter circuit, the second filter circuit and rectifier bridge D5；
The transmitting terminal accesses alternating current by two-phase, three-wire plug, and the output terminal of two-pin plug passes through terminal J1, terminal J2, terminal
J3 connects lightning protection circuit；The lightning protection circuit includes varistor MOV1, varistor MOV2, varistor MOV3, fuse F1
With gas-discharge tube G1；, pressure-sensitive electricity in parallel with varistor MOV3 after wherein varistor MOV1 and varistor MOV2 series connection
The points of common connection of resistance MOV1 and varistor MOV2 passes through inline fuse F1 connecting terminal J2, the other end of varistor MOV2
The other end of connecting terminal J1, varistor MOV1 by gas-discharge tube G1 connecting terminal J3, gas-discharge tube G1 and terminal J3 it
Between tie point ground connection；
First filter circuit includes safety capacitance CX1, safety capacitance CY1, safety capacitance CY2 and common mode inductance L1；Wherein,
It is in parallel with safety capacitance CX1 after safety capacitance CY1 and safety capacitance CY2 series connection；Safety capacitance CX1 and varistor MOV2 is simultaneously
Connection, safety capacitance CX1 are in parallel with common mode inductance L1 one end；The points of common connection of safety capacitance CY1 and safety capacitance CY2 are grounded；
Second filter circuit includes safety capacitance CX2, safety capacitance CY3, safety capacitance CY4 and common mode inductance L2；Wherein,
It is in parallel with safety capacitance CX2 after safety capacitance CY3 and safety capacitance CY4 series connection, safety capacitance CX2 and the common mode inductance L1 other ends
It is in parallel；The points of common connection ground connection of safety capacitance CY3, safety capacitance CY4；Safety capacitance CX2 is in parallel with common mode inductance L2 one end；
The common mode inductance L2 other ends connect an input terminal of rectifier bridge D5 respectively, and by being sequentially connected in series fuse F2 and transient diode
TH1 connects another input terminal of rectifier bridge D5；
The output terminal of the rectifier bridge D5 is the output terminal of the EMC filter modules.
5. novel radio charging system according to claim 1, it is characterised in that
The power conversion modules include PFC boost circuit and phase whole-bridging circuit；The input termination of the PFC boost circuit
EMC filter module output terminals；The phase whole-bridging circuit input termination power conversion control module, phase whole-bridging circuit it is defeated
Outlet is in parallel with the transmitting resonant capacitance.
6. novel radio charging system according to claim 5, it is characterised in that
The PFC boost circuit includes the first boosting branch in parallel and the second boosting branch；
First boosting branch includes driving chip U1, field-effect tube Q3, inductance L3, booster diode D8 and current transformer T1A；
The input of driving chip U1 terminates the power conversion control module, and inductance L3 mono- terminates the output terminal of the EMC filter modules,
The Same Name of Ends of another termination booster diode D8 cathodes and current transformer T1A, the different name termination field-effect of current transformer T1A
The drain electrode of pipe Q3；
Second boosting branch includes driving chip U2, field-effect tube Q4, inductance L4, booster diode D10 and current transformer
T2A；The input of driving chip U2 terminates the power conversion control module, and inductance L4 mono- terminates the defeated of the EMC filter modules
Outlet, the Same Name of Ends of another termination booster diode D10 cathodes and current transformer T2A, the different name termination of current transformer T2A
The drain electrode of field-effect tube Q4.
7. novel radio charging system according to claim 5, it is characterised in that
The phase whole-bridging circuit includes the one 4 road phase-shifting full-bridge driving chip U3, the 2nd 4 road phase-shifting full-bridge driving chip, field
Effect pipe Q11, field-effect tube Q12, field-effect tube Q13 and field-effect tube Q14；
It is electrically connected described in the input terminal of one 4 road phase-shifting full-bridge driving chip U3 with power conversion control module, the one 4 tunnel phase shift
Two output terminals of full-bridge driving chip U3 connect the grid and field-effect tube Q12 of field-effect tube Q11 by totem-pote circuit respectively
Grid；
It is electrically connected described in the input terminal of 2nd 4 road phase-shifting full-bridge driving chip U4 with power conversion control module, the 2nd 4 tunnel phase shift
Two output terminals of full-bridge driving chip U4 connect the grid and field-effect tube Q14 of field-effect tube Q13 by totem-pote circuit respectively
Grid；
Field-effect tube Q11 connects to form the first branch with field-effect tube Q12, and field-effect tube Q13 connects to be formed with field-effect tube Q14
The second branch, the first branch and the second branch are in parallel to form bridge circuit；Resistance R48, resistance R49, capacitance C20 are sequentially connected in series,
It is and in parallel with the center output point of the bridge circuit；One end of bridge circuit center output point connects common mode inductance by inductance L6
An input terminal of T3, another input terminal of another termination common mode inductance T3 of bridge circuit center output point；Common mode inductance T3's
Output terminal is the output terminal of phase-shifting full-bridge.
8. novel radio charging system according to claim 1, it is characterised in that
The natural resonance frequency in parallel of the transmitting coil and transmitting resonant capacitance is equal to the driving frequency of phase-shifting full-bridge control module
Rate.
9. novel radio charging system according to claim 1, it is characterised in that
The receiving coil and driving frequency of the series connection intrinsic frequency equal to phase-shifting full-bridge control module for receiving resonant capacitance.
10. novel radio charging system according to claim 1, it is characterised in that
The rectification module includes terminal J1, terminal J2, terminal J6, terminal J10, rectifier diode D1, rectifier diode D4, whole
Flow diode D8, rectifier diode D10, capacitance C2, capacitance C3, relay RELAY1, relay RELAY2, resistance R10, resistance
R11, resistance R12 and resistance R13；
Wherein, terminal J2 connects the anode of rectifier diode D4 and the cathode of rectifier diode D8；Terminal J1 meets rectifier diode D1
Anode and rectifier diode D10 cathode；The cathode of rectifier diode D1 and rectifier diode D4 pass through relay RELAY1
Connecting terminal J6；The anode of rectifier diode D8 and rectifier diode D10 pass through resistance R10, resistance R11, resistance R12, resistance R13
Connecting terminal J10；Capacitance C2, capacitance C3 are connected between rectifier diode D4 cathodes and rectifier diode D8 anodes；
Terminal J1 and terminal J2 is the input terminal of rectification module；Terminal J6 and terminal J10 is the output terminal of rectification module.
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| CN108880001A (en) * | 2018-08-07 | 2018-11-23 | 吉林大学 | A kind of wireless energy transmission device based on the resonance of magnetic coupling |
| CN108879999A (en) * | 2018-08-07 | 2018-11-23 | 吉林大学 | A kind of reactance adaptive wireless energy emission system |
| CN108880000A (en) * | 2018-08-07 | 2018-11-23 | 吉林大学 | A kind of high-power wireless energy emitting device applied to electric car charging |
| CN108879997A (en) * | 2018-08-07 | 2018-11-23 | 吉林大学 | A kind of automatic tuning wireless energy transmission device based on capacitance compensation |
| CN108923551A (en) * | 2018-08-07 | 2018-11-30 | 吉林大学 | It is a kind of that wireless energy transform device is actively tuned based on phase judgement |
| CN109038855A (en) * | 2018-08-07 | 2018-12-18 | 吉林大学 | Based on magnetic coupling resonance formula wireless charging system for electric automobile |
| CN109038856A (en) * | 2018-08-07 | 2018-12-18 | 吉林大学 | A kind of real-time resonant-gate wireless electric vehicle charging device |
| CN109038853A (en) * | 2018-08-07 | 2018-12-18 | 吉林大学 | A kind of wireless energy transform device of self-adapting load |
| CN110061482A (en) * | 2019-05-23 | 2019-07-26 | 北京有感科技有限责任公司 | A kind of lightning protection security system of electric car wireless charging |
| CN110855024A (en) * | 2019-10-18 | 2020-02-28 | 成都斯普奥汀科技有限公司 | Device for controlling wireless charging output power based on PWM (pulse-width modulation) integral circuit |
| WO2021083287A1 (en) * | 2019-10-30 | 2021-05-06 | 华为技术有限公司 | Wireless charging receiver, system and control method |
| WO2021082408A1 (en) * | 2019-10-30 | 2021-05-06 | 华为技术有限公司 | Wireless charging receiving end, system and control method |
| CN113193753A (en) * | 2020-01-13 | 2021-07-30 | 北京新能源汽车股份有限公司 | Synchronous rectifying device and receiving end module of wireless charging system |
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| CN108879999A (en) * | 2018-08-07 | 2018-11-23 | 吉林大学 | A kind of reactance adaptive wireless energy emission system |
| CN108880000A (en) * | 2018-08-07 | 2018-11-23 | 吉林大学 | A kind of high-power wireless energy emitting device applied to electric car charging |
| CN108879997A (en) * | 2018-08-07 | 2018-11-23 | 吉林大学 | A kind of automatic tuning wireless energy transmission device based on capacitance compensation |
| CN108923551A (en) * | 2018-08-07 | 2018-11-30 | 吉林大学 | It is a kind of that wireless energy transform device is actively tuned based on phase judgement |
| CN109038855A (en) * | 2018-08-07 | 2018-12-18 | 吉林大学 | Based on magnetic coupling resonance formula wireless charging system for electric automobile |
| CN108880000B (en) * | 2018-08-07 | 2021-09-21 | 吉林大学 | High-power wireless energy transmitting device applied to charging of electric automobile |
| CN109038853A (en) * | 2018-08-07 | 2018-12-18 | 吉林大学 | A kind of wireless energy transform device of self-adapting load |
| CN108880001A (en) * | 2018-08-07 | 2018-11-23 | 吉林大学 | A kind of wireless energy transmission device based on the resonance of magnetic coupling |
| CN108879999B (en) * | 2018-08-07 | 2022-03-22 | 吉林大学 | Reactance self-adaptive wireless energy transmitting system |
| CN109038853B (en) * | 2018-08-07 | 2022-03-15 | 吉林大学 | Wireless energy transmission device capable of self-adapting to load |
| CN108879997B (en) * | 2018-08-07 | 2022-02-22 | 吉林大学 | Automatic tuning wireless energy transmitting device based on capacitance compensation |
| CN109038855B (en) * | 2018-08-07 | 2022-02-22 | 吉林大学 | Resonance type wireless charging system for electric automobile based on magnetic coupling |
| CN110061482A (en) * | 2019-05-23 | 2019-07-26 | 北京有感科技有限责任公司 | A kind of lightning protection security system of electric car wireless charging |
| CN110855024A (en) * | 2019-10-18 | 2020-02-28 | 成都斯普奥汀科技有限公司 | Device for controlling wireless charging output power based on PWM (pulse-width modulation) integral circuit |
| WO2021082408A1 (en) * | 2019-10-30 | 2021-05-06 | 华为技术有限公司 | Wireless charging receiving end, system and control method |
| WO2021083287A1 (en) * | 2019-10-30 | 2021-05-06 | 华为技术有限公司 | Wireless charging receiver, system and control method |
| CN113193753A (en) * | 2020-01-13 | 2021-07-30 | 北京新能源汽车股份有限公司 | Synchronous rectifying device and receiving end module of wireless charging system |
| CN113193753B (en) * | 2020-01-13 | 2023-01-10 | 北京新能源汽车股份有限公司 | Synchronous rectifying device and receiving end module of wireless charging system |
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Application publication date: 20180424 |