CN102270886B - Cascade wireless charging device - Google Patents

Cascade wireless charging device Download PDF

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Publication number
CN102270886B
CN102270886B CN2011102122137A CN201110212213A CN102270886B CN 102270886 B CN102270886 B CN 102270886B CN 2011102122137 A CN2011102122137 A CN 2011102122137A CN 201110212213 A CN201110212213 A CN 201110212213A CN 102270886 B CN102270886 B CN 102270886B
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CN
China
Prior art keywords
coil
impedance
receiving
unit
transmitting
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Application number
CN2011102122137A
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Chinese (zh)
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CN102270886A (en
Inventor
张东华
贺智轶
梁金峰
梁曦
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武汉中原电子集团有限公司
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Priority to CN2011102122137A priority Critical patent/CN102270886B/en
Publication of CN102270886A publication Critical patent/CN102270886A/en
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Publication of CN102270886B publication Critical patent/CN102270886B/en

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Abstract

The invention discloses a cascade wireless charging device. In the cascade wireless charging device, a transmitter module and a receiver module send a frequency signal of a transmitting terminal and a frequency signal of a receiving terminal to a third wireless transmitting and receiving unit respectively; the third wireless transmitting and receiving unit matches the impedance of a transmitting coil and the impedance of a receiving coil respectively through a transmitting matching unit and a receiving matching unit; the transmitting coil receives electromagnetic wave energy signals which are sent by the transmitter module and couples the electromagnetic wave energy signals to a coupling coil; the coupling coil transfers the electromagnetic wave energy signals to a power supply unit and a receiving coil respectively; and the receiving coil transfers the electromagnetic wave energy signals to the receiver module. The cascade wireless charging device has a simple structure and is operated stably; the electromagnetic wave energy signals with different frequencies can be transferred, and a wireless transmission distance is increased; and the problem caused by complex wiring is effectively solved, and a potential safety hazard caused by the ageing of a wire is eliminated.

Description

A kind of cascade wireless charging device
Technical field
The invention belongs to the wireless charging technical field, more specifically relate to a kind of cascade wireless charging device.Be applicable to household electrical appliance, handheld mobile device wireless power.
Background technology
Flourish along with new high-tech industries such as electric automobile, high ferro, radio sensing networks, and electronic equipment is in the application of more and more occasions, traditional wired supply power mode has exposed many limitations, and the power supply of storage battery formula has caused a large amount of wastings of resources and environmental pollution, the line loss of big electric current contact power supply own is with to plug line loss repeatedly serious, influenced obviously by ambient temperature and air humidity, and be easy to generate spark, the reform of supply power mode is imperative.And conventional wireless supply power mode radiativity is strong, efficiency of transmission is low, transmission range is near, transmission frequency and receive frequency must be identical or within limits, send coil and receiving coil and need supporting use, can not only change one of them, and the electromagnetic wave energy of different frequency can not transfer, has limited the popularization of wireless power related application.
Summary of the invention
The objective of the invention is to be to provide a kind of cascade wireless charging device, can carry out transfer to the electromagnetic wave energy signal of different frequency, increase wireless transmission distance, efficiently solved the problem that complicated wiring brings, eliminated the aging potential safety hazard of being brought of wire rod.
In order to realize above-mentioned purpose, the present invention adopts following technical measures:
A kind of cascade wireless charging device, comprise transmitter module and receiver module, also comprise trunk module, trunk module comprises the 3rd wireless transmit/receive units, the emission matching unit, receive matching unit, coupling coil, transmitting coil, receiving coil and power subsystem, transmitter module and receiver module send to the 3rd wireless transmit/receive units with transmitting terminal frequency signal and receiving terminal frequency signal respectively, the 3rd wireless transmit/receive units mates the impedance of transmitting coil and the impedance of receiving coil by emission matching unit and reception matching unit respectively, transmitting coil receives the electromagnetic wave energy signal of transmitter module emission and is coupled to coupling coil, coupling coil passes to power subsystem and receiving coil respectively with the electromagnetic wave energy signal, and receiving coil is delivered to receiver module with the electromagnetic wave energy signal.
Aforesaid emission matching unit comprises the tranmitting frequency adjustment unit and first impedance matching unit, and the tranmitting frequency adjustment unit mates the impedance of transmitting coil by first impedance matching unit according to the transmitting terminal frequency signal that obtains from the 3rd wireless transmit/receive units.
Aforesaid reception matching unit comprises the receive frequency adjustment unit and second impedance matching unit, and the receive frequency adjustment unit mates the impedance of receiving coil by second impedance matching unit according to the receiving terminal frequency signal that obtains from the 3rd wireless transmit/receive units.
Aforesaid transmitter module comprises first wireless transmit/receive units, described receiver module comprises second wireless transmit/receive units, and first wireless transmit/receive units and second wireless transmit/receive units send to trunk module with transmitting terminal frequency signal and receiving terminal frequency signal respectively.
Aforesaid power subsystem comprises AC/DC unit, charging control unit and power supply, the AC/DC unit will from coupling coil to the electromagnetic wave energy conversion of signals become electric energy and by charging control unit with electrical power storage to power supply.
The present invention compared with prior art has the following advantages and beneficial effect:
1. simple in structure, stable;
2. can carry out transfer to the electromagnetic wave energy signal of different frequency, increase wireless transmission distance;
3. efficiently solve the problem that complicated wiring brings, eliminated the aging potential safety hazard of being brought of wire rod.
Description of drawings
Fig. 1 is a kind of principle schematic of cascade wireless charging device.
Fig. 2 is the principle schematic of emission matching unit among Fig. 1.
Fig. 3 is the principle schematic that receives matching unit among Fig. 1.
Fig. 4 is the principle schematic of power subsystem among Fig. 1.
Among the figure: the 1-transmitter module; The 2-receiver module; The 3-trunk module; 101-first wireless transmit/receive units; 201-second wireless transmit/receive units; 301-the 3rd wireless transmit/receive units; 302-launches matching unit; 303-receives matching unit; The 304-coupling coil; The 305-AC/DC unit; The 306-charging control unit; The 307-power supply; 308-tranmitting frequency adjustment unit; 309-first impedance matching unit; The 310-transmitting coil; 311-receive frequency adjustment unit; 312-second impedance matching unit; The 313-receiving coil; The 314-power subsystem.
Embodiment
Below in conjunction with accompanying drawing technical scheme of the present invention is described in further detail:
Embodiment:
As Fig. 1, Fig. 2, shown in Figure 3, a kind of cascade wireless charging device, comprise transmitter module 1, receiver module 2, trunk module 3, trunk module 3 comprises the 3rd wireless transmit/receive units 301, emission matching unit 302, receive matching unit 303, coupling coil 304, transmitting coil 310, receiving coil 313 and power subsystem 314, transmitter module 1 and receiver module 2 send to the 3rd wireless transmit/receive units 301 with transmitting terminal frequency signal and receiving terminal frequency signal respectively, the 3rd wireless transmit/receive units 301 mates by emission matching unit 302 and the impedance that receives 303 pairs of transmitting coils 310 of matching unit and the impedance of receiving coil 313 respectively, transmitting coil 310 receives the electromagnetic wave energy signal of transmitter module 1 emission and is coupled to coupling coil 304, coupling coil 304 passes to power subsystem 314 and receiving coil 313 respectively with the electromagnetic wave energy signal, and receiving coil 313 is delivered to receiver module 2 with the electromagnetic wave energy signal.
Emission matching unit 302 comprises the tranmitting frequency adjustment unit 308 and first impedance matching unit 309, and tranmitting frequency adjustment unit 308 mates by the impedance of 309 pairs of transmitting coils 310 of first impedance matching unit according to the transmitting terminal frequency signal that obtains from the 3rd wireless transmit/receive units 301.
Receive matching unit 303 and comprise the receive frequency adjustment unit 311 and second impedance matching unit 312, receive frequency adjustment unit 311 mates by the impedance of 312 pairs of receiving coils 313 of second impedance matching unit according to the receiving terminal frequency signal that obtains from the 3rd wireless transmit/receive units 301.
Transmitter module 1 sends to the 3rd wireless transmit/receive units 301 by first wireless transmit/receive units 101 with the transmitting terminal frequency signal, the 3rd wireless transmit/receive units 301 passes to tranmitting frequency adjustment unit 308 with the transmitting terminal frequency signal, transmission frequency adjustment unit 308 calculates transmitting terminal signal frequency value according to the transmitting terminal frequency signal, and calculate transmitting coil 310 by transmitting terminal signal frequency value and need impedance for matching, and control the switching frequency of the field effect transistor in first impedance matching unit 309.Because field effect transistor is under different switching frequencies, conducting resistance is different, thereby realizes the impedance matching to transmitting coil 310.Transmitting coil 310 after the impedance matching can receive the electromagnetic wave energy signal of transmitter module 1 emission smoothly, and the electromagnetic wave energy signal is coupled to coupling coil 304, coupling coil 304 passes to power subsystem 314 and receiving coil 313 respectively with the electromagnetic wave energy signal.
Receiver module 2 sends to the 3rd wireless transmit/receive units 301 by second wireless transmit/receive units 201 with the receiving terminal frequency signal, the 3rd wireless transmit/receive units 301 passes to receive frequency adjustment unit 311 with the receiving terminal frequency signal, receive frequency adjustment unit 311 calculates the receiving end signal frequency values according to the receiving terminal frequency signal, and calculate receiving coil 313 by the receiving end signal frequency values and need impedance for matching, and control the switching frequency of the field effect transistor in second impedance matching unit 312, thereby the impedance matching of the take-up circle 313 that achieves a butt joint.Receiving coil 313 after the impedance matching will send to receiver module 2 by the electromagnetic wave energy signal that coupling coil 304 receives, and realize the transfer of electromagnetic wave energy signal.
Transmission frequency adjustment unit 308 calculates transmitting coil 310 needs impedance for matching according to transmitting terminal signal frequency value and receive frequency adjustment unit 311 is based on following formula according to receiving end signal frequency values calculating receiving coil 313 needs impedance for matching:
f = Q 2 - 1 2 πQ LC
In the formula: f is a signal frequency, and L is a coil inductance; C is the stary capacity of coil; R LImpedance for the coil performance; R cImpedance for stary capacity of coil performance; π is a circumference ratio.
As shown in Figure 4, power subsystem 314 comprises AC/DC unit 305, charging control unit 306 and power supply 307, AC/DC unit 305 will from coupling coil 304 to the electromagnetic wave energy conversion of signals become electric energy and by charging control unit 306 with electrical power storage to power supply 307, power supply 307 gives trunk module 3 power supplies.
With respect to traditional magnetic resonance wireless charging device, the present invention has increased trunk module 3 in the middle of transmitter module 1 and receiver module 1.This trunk module 3 does not need externally fed, and purpose is the different electromagnetic wave energy signals of adaptive reception transfer transmitter module 1 and receiver module 1, make transmitter module 1 and receiver module 1 the electromagnetic wave energy signal frequency not simultaneously, also can carry out the energy transfer.And required wire rod in the conserve energy transmission, thereby reduced the waste of non-renewable nonferrous metal resource such as copper, aluminium, and avoid the discarded object that produces in its production process and discarded disposable battery to the pollution of environment, reached the significantly purpose of energy-saving and emission-reduction.Consumptive material of the present invention is few, cost is low, be applicable to household electrical appliance, handheld mobile device wireless power, broken away from the constraint of cable, power supply adaptor and charger, efficiently solve the problem that complicated wiring brings, eliminated the aging potential safety hazard of being brought of wire rod, also satisfied power supply needs simultaneously at special occasions such as electric automobile, wireless sensor network, medical science machineries.
Transmitter module 1 and receiver module 2 are two wireless energy transform devices that have radio receiving transmitting module.First wireless transmit/receive units 101, second wireless transmit/receive units 201, the 3rd wireless transmit/receive units 301 are made up of general wireless transport module RF2410.Tranmitting frequency adjustment unit 308 and receive frequency adjustment unit 311 can be realized by the DDS signal generator.Transmitting coil 310, receiving coil 313 and coupling coil 304 form for the enamelled wire coiling.AC/DC unit 305 is realized by general rectifier bridge and filter capacitor inductive circuit.Power supply is made up of common chargeable battery.

Claims (3)

1. cascade wireless charging device, comprise transmitter module (1) and receiver module (2), it is characterized in that: also comprise trunk module (3), trunk module (3) comprises the 3rd wireless transmit/receive units (301), emission matching unit (302), receive matching unit (303), coupling coil (304), transmitting coil (310), receiving coil (313) and power subsystem (314), transmitter module (1) and receiver module (2) send to the 3rd wireless transmit/receive units (301) with transmitting terminal frequency signal and receiving terminal frequency signal respectively, the 3rd wireless transmit/receive units (301) mates the impedance of transmitting coil (310) and the impedance of receiving coil (313) by emission matching unit (302) and reception matching unit (303) respectively, transmitting coil (310) receives the electromagnetic wave energy signal of transmitter module (1) emission and is coupled to coupling coil (304), coupling coil (304) passes to power subsystem (314) and receiving coil (313) respectively with the electromagnetic wave energy signal, receiving coil (313) is delivered to receiver module (2) with the electromagnetic wave energy signal, emission matching unit (302) comprises tranmitting frequency adjustment unit (308) and first impedance matching unit (309), tranmitting frequency adjustment unit (308) mates the impedance of transmitting coil (310) by first impedance matching unit (309) according to the transmitting terminal frequency signal that obtains from the 3rd wireless transmit/receive units (301), receive matching unit (303) and comprise receive frequency adjustment unit (311) and second impedance matching unit (312), receive frequency adjustment unit (311) mates the impedance of receiving coil (313) by second impedance matching unit (312) according to the receiving terminal frequency signal that obtains from the 3rd wireless transmit/receive units (301)
Transmission frequency adjustment unit (308) calculates transmitting coil (310) according to transmitting terminal signal frequency value needs impedance for matching and receive frequency adjustment unit (311) to need impedance for matching to be based on following formula according to receiving end signal frequency values calculating receiving coil (313):
f = Q 2 - 1 2 πQ LC
In the formula: f is a signal frequency, and L is a coil inductance; C is the stary capacity of coil; R LImpedance for the coil performance; R cImpedance for stary capacity of coil performance; π is a circumference ratio.
2. a kind of cascade wireless charging device according to claim 1, it is characterized in that: described transmitter module (1) comprises first wireless transmit/receive units (101), described receiver module (2) comprises second wireless transmit/receive units (201), and first wireless transmit/receive units (101) and second wireless transmit/receive units (201) send to trunk module (3) with transmitting terminal frequency signal and receiving terminal frequency signal respectively.
3. a kind of cascade wireless charging device according to claim 1, it is characterized in that: described power subsystem (314) comprises AC/DC unit (305), charging control unit (306) and power supply (307), AC/DC unit (305) will from coupling coil (304) to the electromagnetic wave energy conversion of signals become electric energy and by charging control unit (306) with electrical power storage to power supply (307).
CN2011102122137A 2011-07-27 2011-07-27 Cascade wireless charging device CN102270886B (en)

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CN102270886B true CN102270886B (en) 2013-07-31

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103236567B (en) * 2013-04-18 2016-05-04 东莞宇龙通信科技有限公司 The method of wireless charging, Apparatus and system
CN108206708A (en) * 2016-12-16 2018-06-26 博西华电器(江苏)有限公司 A kind of household electrical appliance
CN109542068A (en) * 2018-12-10 2019-03-29 武汉中原电子集团有限公司 A kind of high temperature electrified ageing and control system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1329774A (en) * 1998-12-04 2002-01-02 高通股份有限公司 Impedance matching networks of non-linear circuits
CN1932908A (en) * 2006-10-26 2007-03-21 梁明 Wireless on-line monitoring system and method with electric distribution network cable connector running state
CN201041948Y (en) * 2007-08-08 2008-03-26 深圳华为通信技术有限公司 Power supply device
CN101471587A (en) * 2007-12-14 2009-07-01 苏州达方电子有限公司 Energy transmission system and method thereof
CN101924399A (en) * 2010-04-12 2010-12-22 武汉大学 Relay wireless power supply system based on magnetic resonance
CN102130511A (en) * 2010-01-15 2011-07-20 索尼公司 Wireless power supplying system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8497658B2 (en) * 2009-01-22 2013-07-30 Qualcomm Incorporated Adaptive power control for wireless charging of devices

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1329774A (en) * 1998-12-04 2002-01-02 高通股份有限公司 Impedance matching networks of non-linear circuits
CN1932908A (en) * 2006-10-26 2007-03-21 梁明 Wireless on-line monitoring system and method with electric distribution network cable connector running state
CN201041948Y (en) * 2007-08-08 2008-03-26 深圳华为通信技术有限公司 Power supply device
CN101471587A (en) * 2007-12-14 2009-07-01 苏州达方电子有限公司 Energy transmission system and method thereof
CN102130511A (en) * 2010-01-15 2011-07-20 索尼公司 Wireless power supplying system
CN101924399A (en) * 2010-04-12 2010-12-22 武汉大学 Relay wireless power supply system based on magnetic resonance

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