CN104037918A - Wireless charging system and method for magnetic resonance type vehicle-mounted mobile terminal - Google Patents

Wireless charging system and method for magnetic resonance type vehicle-mounted mobile terminal Download PDF

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Publication number
CN104037918A
CN104037918A CN201410320422.7A CN201410320422A CN104037918A CN 104037918 A CN104037918 A CN 104037918A CN 201410320422 A CN201410320422 A CN 201410320422A CN 104037918 A CN104037918 A CN 104037918A
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CN
China
Prior art keywords
circuit
wireless charging
charging
magnetic resonance
mobile terminal
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Pending
Application number
CN201410320422.7A
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Chinese (zh)
Inventor
吴文平
张健
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Jiangsu Normal Celestial Movement Auto Technology Co Ltd
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Jiangsu Normal Celestial Movement Auto Technology Co Ltd
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Priority to CN201410320422.7A priority Critical patent/CN104037918A/en
Publication of CN104037918A publication Critical patent/CN104037918A/en
Pending legal-status Critical Current

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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

The invention discloses a wireless charging system and method for a magnetic resonance type vehicle-mounted mobile terminal. The system comprises a vehicle-mounted magnetic resonance wireless charging transmitting device and a wireless charging receiving device of the mobile terminal, wherein the vehicle-mounted magnetic resonance wireless charging transmitting device comprises a power management circuit, a transmitting end short distance wireless communication transceiving circuit, a control circuit, a high-frequency oscillation circuit, a coupling transmission circuit and a coupling transmitting coil; the wireless charging receiving device of the mobile terminal comprises a resonance receiving circuit, a rectifier filter voltage stabilizing circuit, a charging state detection circuit, an information acquisition circuit and a receiving end short distance wireless communication transceiving circuit. It is confirmed that charging energy can be transmitted after the mobile terminal is chargeable in a short distance wireless communication mode, safety and energy conservation are guaranteed, and the wireless charging system can be directly used in vehicles.

Description

A kind of magnetic resonance type vehicle mobile terminals wireless charging system and method
Technical field
The invention belongs to mobile terminal wireless charging technical field, relate in particular to mobile terminal wireless charging system in a kind of car based on magnetic resonance.
Background technology
Mobile terminal charging modes in car is all to adopt charger and the direct connection mode of car at present, or adopts the wireless charging mode based on electromagnetic induction principle; And the former cannot use when not carrying special-purpose charger, and connect by wired mode, be not very convenient when taking mobile terminal device; A rear charging modes is owing to being limited to the large factor that just can charge normal of distance of reaction and required charging current, and range of application is subject to great restriction.
Mr techniques is current to be mainly reflected in the application of communication, and its application in delivery of electrical energy is always in blank.Wireless charging mode based on magnetic resonance mode, the plug that has deducted wired connection mode is bothered, and has broken through the charging distance restriction of electromagnetic induction charged mode.
Summary of the invention
The present invention proposes mobile terminal wireless charging system in a kind of car based on magnetic resonance, it comprises: the wireless charging receiver of vehicle-mounted magnetic resonance wireless charging emitter and mobile terminal, and wherein said vehicle-mounted magnetic resonance wireless charging emitter comprises: electric power management circuit, transmitting terminal short-distance wireless communication transmission circuit, control circuit, high-frequency oscillating circuits, coupling firing circuit and coupling firing coil; The wireless charging receiver of described mobile terminal comprises: resonance receiving circuit, rectification filtering voltage stabilizing circuit, charging state detection circuit, information acquisition circuit and receiving terminal short-distance wireless communication transmission circuit.
Wherein, described electric power management circuit is connected to automobile power source;
The information that described control circuit is launched according to short-distance wireless communication transmission circuit reception to the short-distance wireless communication transmission circuit of wireless charging receiving terminal of emitter end is in order to the output voltage of regulating and controlling electric power management circuit;
Power supply supply high frequency oscillating circuit after electric power management circuit conversion, produces corresponding resonant energy input coupling firing circuit to coupling firing coil and launches;
By regulating the output voltage of electric power management circuit, control the power output of coupling firing coil;
Wherein, described transmitting terminal short-distance wireless communication transmission circuit adopts the wireless communication technique realizations such as Zigbee, NFC, bluetooth to carry out information exchange with the wireless charging receiver of mobile terminal.
Wherein, described control circuit is by decoding communication transceiving circuit gained information, the square-wave signal that generation frequency range is 100KHz~500KHz.
Wherein, the resonant circuit that described high-frequency oscillating circuits is comprised of electric capacity and inductance.
Wherein, described coupling firing circuit, the power amplification circuit and the coupling firing coil that H bridge or D class A amplifier A, consist of form.
Wherein, the energy that the square-wave signal that described control circuit produces is adjusted high-frequency oscillating circuits by the output voltage of regulating and controlling power management sends.
Wherein, described wireless charging receiving circuit receives the power that described coupling firing coil sends, and then by rectification filtering voltage stabilizing circuit, is converted to 4.2V DC power supply, thereby battery of mobile terminal 12 is charged.
Wherein, described charging state detection circuit calculates charge efficiency difference power ratio by detecting real-time voltage and the charging current of battery of mobile terminal 12 to information acquisition circuit, mainly comprises current collection circuit structure and voltage collection circuit structure.
Wherein, described information acquisition circuit calculates current charge efficiency, charging loss and transmitting power and the poor ratio of received power by gathering voltage and the charging current of charging state detection circuit transmission, by receiving terminal short-distance wireless communication transmission circuit 15, deliver to the transmitting terminal short-distance wireless communication transmission circuit to wireless charging emitter end, to transmitting terminal, provide corresponding energy adjusting information.
The invention allows for a kind of magnetic resonance type vehicle mobile terminals wireless charging method, the steps include:
Wireless charging emitter sends low-power high-frequency electromagnetic energy to wireless charging receiver;
Wireless charging receiver receives that resonant energy wakes up after its inner short-distance wireless communication transceiver module, returns to wireless charging emitter by self ID signal;
Wireless charging emitter recognizes after received id information, confirms as effective charging mobile terminal module, thereby gets rid of other metals;
Information about power and the difference power ratio of the current mobile terminal battery that wireless charging emitter sends by the wireless charging receiver obtaining, give corresponding power stage;
When charge efficiency is following lower than 35%, not to 9 transmittings of resonance receiving coil; When efficiency is more than charging critical point, but during lower than optimum charging scope (as 90% left and right), can guarantee that mobile terminal can be by quick charge by increasing transmitting power
When the electric weight of battery of mobile terminal has reached filled state, close the transmission of electromagnetic energy.
Confirm after said process, coupling firing circuit 5 continues to send charge power to resonance receiving coil 9 through coupling firing coil 8;
Wireless charging receiving terminal charging state detection circuit monitoring battery current state, after battery has charged, the receiving terminal short-distance wireless communication transmission circuit by wireless charging receiving terminal sends charging ending request to wireless charging emitter.
Compared with prior art, the beneficial effect of magnetic resonance type vehicle mobile terminals wireless charging system of the present invention is as follows:
By short-distance wireless communication mode, can confirm to transmit again the energy of charging after mobile terminal can charge, thereby guarantee safe and energy-conservation.Can directly in car, use.
Easy for installation, can in car, install arbitrary position.
Easy to use, break through the distance limit of induction wireless charging, in car, use mobile terminal charging not need to place fixed position charging.
Can charge to the mobile terminal of existing wireless charging receiver.
Can provide wireless charging receiver for the mobile terminal without wireless charging receiver, realize wireless charging function.
Be widely used, the wireless charging receiver of the mobile electronic product of other different capacities can be provided, realize wireless charging function.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the magnetic resonance type vehicle mobile terminals wireless charging system consistent with the embodiment of the present invention.
Specific embodiment
The system that a kind of vehicle mobile terminals wireless charging based on magnetic resonance is provided of the present invention.The wireless charging receiver that utilizes onboard wireless charging emitter and mobile terminal carries out wireless charging for mobile terminal in car.Onboard wireless charging emitter comprises: electric power management circuit, transmitting terminal short-distance wireless communication transmission circuit, control circuit, high-frequency oscillating circuits, coupling firing circuit and coupling firing coil; Mobile terminal wireless charging receiver comprises: resonance receiving circuit, rectification filtering voltage stabilizing circuit, charging state detection circuit, information acquisition circuit and receiving terminal short-distance wireless communication transmission circuit.
The present invention relates to magnetic resonance type vehicle mobile terminals wireless charging emitter and be connected to automobile power source, can receive when charging and by coupling firing coil, send after being converted into high frequency wireless wave mobile terminal being detected; First mobile terminal needs transmitting information notice wireless charging device to charge, wireless charging receiver receives the corresponding energy that wireless charging emitter sends simultaneously, after rectifying and wave-filtering voltage stabilizing, be converted to constant dc and charge to mobile terminal, after charging successful connection, the required information of passback wireless charging emitter is used for adjusting energy transmitting in real time.
Magnetic resonance type vehicle-mounted wireless charging device of the present invention can directly charge to the mobile terminal of integrated wireless charging receiver; After the mobile terminal of integrated wireless charging receiver can not configure wireless charging receiver, charge.
As shown in Figure 1, vehicle mobile terminals wireless charging system is powered by automobile power source 1, and electric power management circuit 2 is Buck-Boost circuit, and it is converted to the direct current of 3.3V~20V by the automobile power source of+12V.The signal that this voltage can be received according to transmitting terminal short-distance wireless communication transmission circuit 6 by control circuit 3 regulates; DC power supply after electric power management circuit 2 conversions is to high-frequency oscillating circuits 4 power supplies; Because electric power management circuit 2 can regulation voltage, therefore can be by regulating the output voltage of electric power management circuit 2 control the power output on the coupling firing circuit 5 being formed by H bridge or D class A amplifier A.
Control circuit 3 can produce the square-wave signal that frequency range is 100KHz~500KHz, this signal is by regulating the voltage of power management output, supply high frequency oscillating circuit, after producing high frequency radio wave, high-frequency oscillating circuits 4 carries coupling firing circuit 5 again, through coupling firing circuit 5, carry out corresponding power amplification and deliver to coupling firing coil 8, coupling firing coil 8 is emitted to resonant electromagnetic ripple corresponding charging spatial dimension again.
Transmitting terminal short-distance wireless communication transmission circuit 6 obtains charged state and the power demand information of current mobile terminal, by control circuit 3 by after this information decoding, send the output voltage values that corresponding order carrys out regulating and controlling electric power management circuit 2, thereby realize the transmitting power of closed-loop control coupling firing circuit 5.
Resonance coil 9 and tuning capacitance 10 form wireless charging receiving circuit, receive the power that the coupling firing circuit 5 in wireless charging emitter sends, then by the bridge rectifier in rectification filtering voltage stabilizing circuit 11, be converted to 4.2V DC power supply, thereby can charge to battery of mobile terminal 12.In addition, voltage and charging current that information acquisition circuit 14 transmits by gathering test circuit for cell status 13, calculate corresponding difference power ratio, charging loss and charge efficiency, and deliver to receiving terminal short-distance wireless communication transmission circuit 15, finally by dual-mode antenna 16, send the transmitting terminal short-distance wireless communication transmission circuit 6 of wireless charging emitter to.
The concrete steps of charging are as follows:
Coupling firing circuit 5 sends low-power high-frequency energy to resonance coil 9 through coupling firing coil 8.
Resonance coil 9 is received after effective electromagnetic energy, and the circuit function of wake on wireless charging receiver is delivered to self ID signal to wireless charging emitter checking identification to receiving terminal short-distance wireless communication transmission circuit 15.
Transmitting terminal short-distance wireless communication transmission circuit 6 receives that offering control circuit after corresponding ID signal decodes to verify identification id, after ID identification, confirms as effective charging mobile terminal module, thereby gets rid of other metals; In addition, wireless charging emitter, by information about power, loss and the difference power ratio of the current mobile terminal battery of the wireless charging receiver transmitting of passback, gives corresponding power stage; When efficiency is during lower than critical value (as below 35%), to 5 transmittings of coupling firing circuit; When efficiency is more than charging critical point, but during lower than optimum charging scope (as 90% left and right), can guarantee that mobile terminal can be by quick charge by increasing transmitting power.
Confirm after said process, the charge power that coupling firing circuit 5 continues to send optimization is to resonance receiving coil 9.
Wireless charging receiving terminal monitoring battery state, after battery has charged; By information acquisition circuit 14, by receiving terminal short-distance wireless communication transmission circuit 15, to the transmitting terminal short-distance wireless communication transmission circuit 6 in wireless charging emitter, send charging ending request.
Reflector complete charge, enters monitoring holding state.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (10)

1. a magnetic resonance type vehicle mobile terminals wireless charging system, it comprises: the wireless charging receiver of vehicle-mounted magnetic resonance wireless charging emitter and mobile terminal, and wherein said vehicle-mounted magnetic resonance wireless charging emitter comprises: electric power management circuit, transmitting terminal short-distance wireless communication transmission circuit, control circuit, high-frequency oscillating circuits, coupling firing circuit and coupling firing coil; The wireless charging receiver of described mobile terminal comprises: resonance receiving circuit, rectification filtering voltage stabilizing circuit, charging state detection circuit, information acquisition circuit and receiving terminal short-distance wireless communication transmission circuit.
2. magnetic resonance type vehicle mobile terminals wireless charging system as claimed in claim 1, wherein
Described electric power management circuit connects automobile power source;
The described control circuit information that reception is launched from the receiving terminal short distance communication transmission circuit in wireless charging receiver according to transmitting terminal short-distance wireless communication transmission circuit is in order to the output voltage of regulating and controlling electric power management circuit;
Direct current supply high frequency oscillating circuit after electric power management circuit conversion, produces the transmitting of corresponding resonant energy input coupling firing circuit;
By regulating the output voltage of electric power management circuit, control the power output on coupling firing coil;
Described transmitting terminal short-distance wireless communication transmission circuit and receiving terminal short distance communication transmission circuit adopt the information exchange that completes wireless charging emitter and receiving system as Zigbee, NFC, bluetooth, wireless local, the short-distance wireless communication transmission circuit structure such as infrared.
3. magnetic resonance type vehicle mobile terminals wireless charging system as claimed in claim 1, wherein said control circuit produces the square-wave signal that frequency range is 100KHz~500KHz.
4. magnetic resonance type vehicle mobile terminals wireless charging system as claimed in claim 1, the resonant circuit that wherein said high-frequency oscillating circuits is comprised of electric capacity and inductance.
5. magnetic resonance type vehicle mobile terminals wireless charging system as claimed in claim 1, the square-wave signal that wherein said control circuit produces is adjusted Voltage-output supply high frequency oscillating circuit through described electric power management circuit, produces high-frequency electric wave and flows to coupling firing circuit and coupling firing coil.
6. magnetic resonance type vehicle mobile terminals wireless charging system as claimed in claim 1, wherein said resonance receiving circuit receives the power that described coupling firing coil sends, then by rectification filtering voltage stabilizing circuit, be converted to 4.2V DC power supply, thereby battery of mobile terminal is charged.
7. magnetic resonance type vehicle mobile terminals wireless charging system as claimed in claim 1, voltage and charging current that wherein said information acquisition circuit adopts A/D circuit to gather charging state detection circuit send to the corresponding difference power ratio of wireless charging emitter, charging loss and charge efficiency.
8. a magnetic resonance type vehicle mobile terminals wireless charging method, it adopts magnetic resonance type vehicle mobile terminals wireless charging system as claimed in claim 1, and described method comprises the steps:
Coupling firing circuit sends low-power high-frequency signal to resonance receiving circuit;
Resonance coil is received after effective electromagnetic energy, the circuit function of wake on wireless charging receiver, and self ID signal is sent to wireless charging emitter checking identification through receiving terminal short-distance wireless communication transmission circuit;
Transmitting terminal short-distance wireless communication transmission circuit receives that offering control circuit after corresponding ID signal decodes to verify identification id, after ID identification, confirms as effective charging mobile terminal module, thereby gets rid of other metals; In addition, the information about power of the current mobile terminal battery that wireless charging emitter sends by the wireless charging receiver obtaining, charging loss and difference power ratio, give corresponding power stage; When efficiency is during lower than critical value, coupling firing circuit is not launched; When efficiency is more than described critical value, but during lower than optimum charging scope, by increasing transmitting power, guarantee that mobile terminal can be by quick charge;
Confirm that, after said process, the charge power that coupling firing circuit continues to send optimization is to resonance receiving circuit;
Wireless interface receiving end monitoring battery state, after battery has charged, sends charging ending request by receiving terminal short-distance wireless communication transmission circuit to the transmitting terminal short-distance wireless communication transmission circuit in wireless charging emitter by information acquisition circuit;
Wireless charging emitter complete charge, enters monitoring holding state.
9. magnetic resonance type vehicle mobile terminals wireless charging method as claimed in claim 8, described critical value is preferably 35%.
10. magnetic resonance type vehicle mobile terminals wireless charging method as claimed in claim 8, described optimum charging scope is preferably 90%.
CN201410320422.7A 2014-07-08 2014-07-08 Wireless charging system and method for magnetic resonance type vehicle-mounted mobile terminal Pending CN104037918A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410320422.7A CN104037918A (en) 2014-07-08 2014-07-08 Wireless charging system and method for magnetic resonance type vehicle-mounted mobile terminal

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Application Number Priority Date Filing Date Title
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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104785390A (en) * 2015-04-29 2015-07-22 厦门建霖工业有限公司 Magnetic resonance chargeable shower head and implementation method for charging and discharging magnetic resonance chargeable shower head
CN105262164A (en) * 2015-10-16 2016-01-20 惠州硕贝德无线科技股份有限公司 Magnetic-resonance wireless charging system
CN105406552A (en) * 2015-12-25 2016-03-16 昆山维信诺科技有限公司 Wireless charging device, charging apparatus and power receiving apparatus
CN106410989A (en) * 2016-10-28 2017-02-15 芜湖市吉安汽车电子销售有限公司 Vehicle-mounted-DA-mutual-control-system-based radio wave charging device
CN106410982A (en) * 2015-07-31 2017-02-15 三星电机株式会社 Wireless power transmitter
CN106451639A (en) * 2016-10-28 2017-02-22 芜湖市吉安汽车电子销售有限公司 Common frequency resonance wireless charging device based on vehicle-mounted DA mutual control system
WO2018184428A1 (en) * 2017-04-07 2018-10-11 广东欧珀移动通信有限公司 Wireless charging system and method, and device to be charged
WO2018184578A1 (en) * 2017-04-07 2018-10-11 Oppo广东移动通信有限公司 Wireless charging system, apparatus, method and device to be charged
CN109391042A (en) * 2018-12-18 2019-02-26 重庆长安汽车股份有限公司 Onboard wireless charger and method with near-field communication
WO2019109573A1 (en) * 2017-12-06 2019-06-13 深圳威迈斯电源有限公司 Charging control circuit compatible with single-phase and three-phase alternating currents
CN110535246A (en) * 2019-08-19 2019-12-03 吉利汽车研究院(宁波)有限公司 A kind of wireless charging method, terminal and vehicle
WO2020124563A1 (en) * 2018-12-21 2020-06-25 Oppo广东移动通信有限公司 Wireless charging method, device to be charged, wireless charging apparatus and storage medium

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CN103646468A (en) * 2013-09-26 2014-03-19 西安理工大学 Measuring and billing system and electric energy measuring and billing method for wireless charging of electric vehicles
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CN103779951A (en) * 2014-01-03 2014-05-07 无锡市产品质量监督检验中心 Electric bicycle magnetic coupling resonance type wireless charger

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104785390A (en) * 2015-04-29 2015-07-22 厦门建霖工业有限公司 Magnetic resonance chargeable shower head and implementation method for charging and discharging magnetic resonance chargeable shower head
CN106410982A (en) * 2015-07-31 2017-02-15 三星电机株式会社 Wireless power transmitter
CN105262164A (en) * 2015-10-16 2016-01-20 惠州硕贝德无线科技股份有限公司 Magnetic-resonance wireless charging system
CN105406552A (en) * 2015-12-25 2016-03-16 昆山维信诺科技有限公司 Wireless charging device, charging apparatus and power receiving apparatus
CN105406552B (en) * 2015-12-25 2018-10-12 昆山维信诺科技有限公司 Wireless charging device and its charging equipment and power receiving equipment
CN106410989A (en) * 2016-10-28 2017-02-15 芜湖市吉安汽车电子销售有限公司 Vehicle-mounted-DA-mutual-control-system-based radio wave charging device
CN106451639A (en) * 2016-10-28 2017-02-22 芜湖市吉安汽车电子销售有限公司 Common frequency resonance wireless charging device based on vehicle-mounted DA mutual control system
WO2018184428A1 (en) * 2017-04-07 2018-10-11 广东欧珀移动通信有限公司 Wireless charging system and method, and device to be charged
WO2018184578A1 (en) * 2017-04-07 2018-10-11 Oppo广东移动通信有限公司 Wireless charging system, apparatus, method and device to be charged
WO2019109573A1 (en) * 2017-12-06 2019-06-13 深圳威迈斯电源有限公司 Charging control circuit compatible with single-phase and three-phase alternating currents
CN109391042A (en) * 2018-12-18 2019-02-26 重庆长安汽车股份有限公司 Onboard wireless charger and method with near-field communication
WO2020124563A1 (en) * 2018-12-21 2020-06-25 Oppo广东移动通信有限公司 Wireless charging method, device to be charged, wireless charging apparatus and storage medium
CN110535246A (en) * 2019-08-19 2019-12-03 吉利汽车研究院(宁波)有限公司 A kind of wireless charging method, terminal and vehicle

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