CN101924387A - Feedback type wireless charger - Google Patents
Feedback type wireless charger Download PDFInfo
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- CN101924387A CN101924387A CN 201010288871 CN201010288871A CN101924387A CN 101924387 A CN101924387 A CN 101924387A CN 201010288871 CN201010288871 CN 201010288871 CN 201010288871 A CN201010288871 A CN 201010288871A CN 101924387 A CN101924387 A CN 101924387A
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Abstract
The invention relates to a feedback type wireless charger which comprises a power supply management circuit of a sending end and a charge circuit of a receiving end. The charger is characterized in that the power supply management circuit is used for sending energy through coil coupling after the energy is amplified by a power amplification circuit; the receiving end is used for receiving the energy transmitted by the sending end through a coupled coil in a wireless mode and providing the energy for the charge circuit after the energy passes through a rectifying and voltage stabilizing circuit; meanwhile, a singlechip control system of the receiving end is used for continuously detecting whether a battery is fully charged or not, and after the battery is detected to be fully charged, a control signal is sent to a feedback signal sending circuit; and the feedback signal sending circuit is used for sending a feedback signal to a transmitting end in a wireless mode through the coil coupling of the receiving end and controlling the power supply management circuit by utilizing a singlechip. In the invention, a sending party can automatically stop charging the battery after the battery of loaded electronic equipment is fully charged, thereby the battery is effectively protected, and the service life is prolonged.
Description
Technical field
The present invention relates to a kind of feedback type wireless charging technique.
Background technology
Wireless power technology (WPT) is a kind of novel electric energy transmission technology, and it has broken away from traditional supply power mode, and adopts wireless mode to provide electric power for power consumption equipment.WPT has two big characteristics: the one, and allow electrical equipment separate fully with power supply, make electrical equipment better in the performance of aspects such as fail safe, flexibility, sealing, aesthetic property; The 2nd, WPT can see through all nonmetallic substances and come transmitting electric power, as water, air, timber, plastics, glass even soil etc.Therefore can realize the parting power supply, this is that wired power supply can't be accomplished.
Existing wireless charger, can charge by the battery of wireless mode to electric equipment, method mainly is to come wireless electric energy transmitting by inductance coil, for example the patent No. is: 200920246002.3 patent, disclosed is a kind of wireless power supply, and it is to adopt the electric current of the alternation of characteristic frequency in the induction coil assembly to produce the magnetic field that changes with characteristic frequency; The electrical appliance voltage transformation unit is the required direct current of power device with the current conversion that receives, and the direct current after the conversion is flowed to power device by charging inlet.Which kind of, all can't realize after the battery of electric equipment is full of, battery being protected no matter as seen be wireless charging device; no longer continue battery charge; but allow battery handle charged state always, and make it supersaturation, cause shorten the useful life of battery like this.
Summary of the invention
The purpose of this invention is to provide a kind of feedback type wireless charger, after the electric device battery that can realize load was full of electricity, transmit leg can stop automatically to battery charge, effectively protects battery, prolongs its useful life.
The present invention adopts following scheme to realize: a kind of feedback type wireless charger, comprise the electric power management circuit of transmitting terminal and the charging circuit of receiving terminal, it is characterized in that: described electric power management circuit with energy after power amplification circuit amplifies, send by the coil coupling, described receiving terminal receives the energy that transmitting terminal emits by coupling coil by wireless mode, offer described charging circuit through behind the regulator rectifier circuit, whether the single-chip computer control system of while receiving terminal constantly detects battery and is full of, after detecting battery and being full of, transmit control signal to the feedback signal transtation mission circuit, send a feedback signal by this feedback signal transtation mission circuit, coil coupling wireless transmission by receiving terminal is gone out, after the coil of transmitting terminal receives this feedback signal, give the single-chip computer control system of transmitting terminal through the feedback signal receiving processing circuit, the single-chip computer control system of described transmitting terminal sends a control signal electric power management circuit is controlled, it is opened circuit, no longer produce power.
Circuit structure of the present invention is simple; by Single Chip Microcomputer (SCM) system as control core; send to transmitting terminal with detecting the feedback signal that battery is full of by wireless mode; and then the work of control electric power management circuit, system stability of the present invention can make and carry out two-way interworking between battery and the charging device; has Energy Saving Control; effectively the protection battery increases the service life, but also can charge to a plurality of batteries simultaneously.
Description of drawings
Fig. 1 is the circuit structure theory diagram of feedback type wireless charger of the present invention.
Fig. 2 is the transmitting terminal radiating circuit schematic diagram of feedback type wireless charger of the present invention.
Fig. 3 is the electronic switching circuit schematic diagram in the electric power management circuit of the present invention.
Fig. 4 is a feedback type wireless charger receiving terminal circuit schematic diagram of the present invention.
Fig. 5 is the Single-chip Controlling schematic circuit schematic diagram that transmitting terminal of the present invention and receiving terminal adopt.
Fig. 6 is a signal feedback circuit schematic diagram of the present invention.
Fig. 7 is a receiving terminal Single-chip Controlling schematic flow sheet of the present invention.
Fig. 8 is a transmitting terminal Single-chip Controlling schematic flow sheet of the present invention.
Embodiment
The present invention will be further described below in conjunction with drawings and Examples.
As shown in Figure 1, the present invention relates to a kind of feedback type wireless charger, comprise the electric power management circuit of transmitting terminal and the charging circuit of receiving terminal, it is characterized in that: described electric power management circuit with energy after power amplification circuit amplifies, send by the coil coupling, described receiving terminal receives the energy that transmitting terminal emits by coupling coil by wireless mode, offer described charging circuit through behind the regulator rectifier circuit, whether the single-chip computer control system of while receiving terminal constantly detects battery and is full of, after detecting battery and being full of, transmit control signal to the feedback signal transtation mission circuit, send a feedback signal by this feedback signal transtation mission circuit, coil coupling wireless transmission by receiving terminal is gone out, after the coil of transmitting terminal receives this feedback signal, give the single-chip computer control system of transmitting terminal through the feedback signal receiving processing circuit, the single-chip computer control system of described transmitting terminal sends a control signal electric power management circuit is controlled, it is opened circuit, no longer produce power.Described receiving terminal Single Chip Microcomputer (SCM) system is connected with charging indication; Described charging circuit also is provided with charging modes and selects circuit.
Specifically, please refer to Fig. 2, Fig. 2 is the transmitting terminal radiating circuit schematic diagram of feedback type wireless charger, and radiating circuit of the present invention is made up of oscillation signal generator and tuned power amplifier two parts.Adopt NE555 to constitute the concussion frequency and be about the 220KHz signal generator, for power amplification circuit provides pumping signal: tuned power amplifier is made of LC shunt-resonant circuit and switching tube IRF840.Oscillator coil on request with diameter be the enamelled wire of 1.0mm close diameter is about 6.6cm around 32 circles, the actual measurement inductance value is about 232uH, by
As can be known, when resonance during at 220KHz, the capacitor C 1 in parallel with it is about 2378p, the fixed capacity of available Leaded Ceramic Disc Capacitor 222 and 220p.
In present embodiment, internal resistance was 0.8 Europe when high power valve TRF840 maximum current was 8A, complete opening, and the pipe caloric value is big, so need finned.Be that the voltage and current in the power amplifier generation resonance, this moment coil reaches maximum, thereby produces maximum alternating electromagnetic field when the resonance frequency of the frequency-selective circuit of power amplifier is identical in exciting signal frequency.When receiving coil in transmitting coil near the time, in receiving coil, produce induced potential, be to produce resonance, voltage max when the resonance frequency of receiving coil loop is identical in tranmitting frequency.
In present embodiment, described electric power management circuit comprises the electronic switch that a control power supply switches.As shown in Figure 3, this electronic switch A2 is by Single-chip Controlling, and pin meets 12V on it, leftover bits and pieces connects the VG end of feeder ear, and (the 8 pin 1V of NE567 are following) electronic switch disconnects when phase-locked, and power supply is equivalent to open circuit, as long as battery is in full state, NE567 just is in phase locked state always.(more than the 8 pin 5V of NE567) electronic switch closes during losing lock feeds the 12V power supply.
As shown in Figure 4, after electric energy received through coil, the quick secondary 1N4148 of high-frequency ac voltage carried out full-wave rectification, and the capacitor filtering of 3300uF is used the voltage stabilizing of 5.1v voltage stabilizing didoe again, and output DC provides comparatively stable operating voltage for charger.
Diode D1 among the figure, the conducting voltage of D2 is constant substantially, so can be used as voltage reference, is about each voltage relationship of 1.4V. and is:
As seen in the constant current charge circuit, charging current is only determined by resistance R 1, R2.Arrange UEB=0.7V in the calculating, charging current Ic (triode electrode current)=Ie.
What deserves to be mentioned is, the circuit of receiving terminal and transmitting terminal adopts identical circuit structure in present embodiment, see also Fig. 5, single-chip microcomputer and AD detect the cell voltage module in recipient's the circuit, ADIN connects the positive pole of the battery of " charging circuit of receiving terminal ", be used for detecting cell voltage, after battery is full of, single-chip microcomputer will be controlled feedback circuit.The single-chip microcomputer of transmit leg also is to link to each other with AD, and whether the coil that ADIN is used for detecting transmit leg receives feedback signal, if having, gives single-chip microcomputer with it, and single-chip microcomputer will be by electronic switch, and control transmitting terminal power circuit manages it.
The receiving terminal feedback circuit is used to take place feedback information, and as shown in Figure 6, VCC connects the P2^1 mouth (self-defined) of single-chip microcomputer, is subjected to Single-chip Controlling whether to produce feedback information, after battery is full of, sends a feedback signal by wireless mode to transmitting terminal.
Fig. 7 and Fig. 8 are single-chip microcomputer receiving terminal of the present invention and transmitting terminal Single-chip Controlling schematic flow sheet.
The above only is preferred embodiment of the present invention, and all equalizations of being done according to the present patent application claim change and modify, and all should belong to covering scope of the present invention.
Claims (3)
1. feedback type wireless charger, comprise the electric power management circuit of transmitting terminal and the charging circuit of receiving terminal, it is characterized in that: described electric power management circuit with energy after power amplification circuit amplifies, send by the coil coupling, described receiving terminal receives the energy that transmitting terminal emits by coupling coil by wireless mode, offer described charging circuit through behind the regulator rectifier circuit, whether the single-chip computer control system of while receiving terminal constantly detects battery and is full of, after detecting battery and being full of, transmit control signal to the feedback signal transtation mission circuit, send a feedback signal by this feedback signal transtation mission circuit, coil coupling wireless transmission by receiving terminal is gone out, after the coil of transmitting terminal receives this feedback signal, give the single-chip computer control system of transmitting terminal through the feedback signal receiving processing circuit, the single-chip computer control system of described transmitting terminal sends a control signal electric power management circuit is controlled, and it is opened circuit, no longer produce power.
2. feedback type wireless charger according to claim 1 is characterized in that: described electric power management circuit comprises the electronic switch that a control power supply switches.
3. feedback type wireless charger according to claim 1 is characterized in that: described receiving terminal Single Chip Microcomputer (SCM) system is connected with charging indication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010288871 CN101924387A (en) | 2010-09-21 | 2010-09-21 | Feedback type wireless charger |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010288871 CN101924387A (en) | 2010-09-21 | 2010-09-21 | Feedback type wireless charger |
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| CN101924387A true CN101924387A (en) | 2010-12-22 |
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| CN 201010288871 Pending CN101924387A (en) | 2010-09-21 | 2010-09-21 | Feedback type wireless charger |
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Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102946133A (en) * | 2012-11-11 | 2013-02-27 | 国家电网公司 | Non-contact type power supply device |
| CN103840538A (en) * | 2012-11-21 | 2014-06-04 | 江苏天宇光伏科技有限公司 | Wireless charging mobile power supply |
| CN103986210A (en) * | 2014-05-26 | 2014-08-13 | 杭州电子科技大学 | Intelligent charger |
| WO2014166204A1 (en) * | 2013-07-24 | 2014-10-16 | 中兴通讯股份有限公司 | Wireless charging device and method |
| WO2014176856A1 (en) * | 2013-04-28 | 2014-11-06 | 海尔集团技术研发中心 | Method and system for wireless electric energy transmission |
| CN104598052A (en) * | 2014-09-23 | 2015-05-06 | 华强云投资控股有限公司 | Wireless charging electromagnetic pen and system thereof |
| CN104917266A (en) * | 2015-07-10 | 2015-09-16 | 李文华 | Emergency starting power supply with multi-gear wireless charge function for automobile |
| CN104993555A (en) * | 2015-08-08 | 2015-10-21 | 国网山东省电力公司枣庄供电公司 | Remote control 5-prevention key charger |
| 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 |
| CN105464144A (en) * | 2015-12-24 | 2016-04-06 | 上海华魏光纤传感技术有限公司 | Intelligent well cover monitoring system used for monitoring well cover locking state |
| CN105464143A (en) * | 2015-12-24 | 2016-04-06 | 上海华魏光纤传感技术有限公司 | Tamper alarm control system of intelligent well cover |
| CN105604095A (en) * | 2015-12-24 | 2016-05-25 | 上海华魏光纤传感技术有限公司 | Intelligent electronic well lid control system |
| CN106253496A (en) * | 2016-08-17 | 2016-12-21 | 桐城信邦电子有限公司 | A kind of radio energy transmission system of novel small-power electronic product |
| CN106503775A (en) * | 2016-11-08 | 2017-03-15 | 合肥工业大学 | Being taken based on the television tower of RFID can energy supplying system |
| CN107482739A (en) * | 2017-08-07 | 2017-12-15 | 珠海三吉士健康科技有限公司 | A kind of battery induction charging device and its system and control method |
| CN107631196A (en) * | 2017-09-14 | 2018-01-26 | 佛山市利升光电有限公司 | A kind of LED Intelligent lamps of the touch light modulation with wireless charging function |
| CN109247039A (en) * | 2016-05-13 | 2019-01-18 | Lg伊诺特有限公司 | Wireless charging method and its device and system |
| CN109831012A (en) * | 2017-11-18 | 2019-05-31 | 长沙鲁维湘机电科技有限公司 | A kind of monolithic processor controlled wireless charging system of application |
| CN110214402A (en) * | 2017-04-07 | 2019-09-06 | Oppo广东移动通信有限公司 | Wireless charging system, device, method and charging equipment |
| CN110927365A (en) * | 2019-11-19 | 2020-03-27 | 广州圣安环保科技有限公司 | Humidity sensing system for building and control method thereof |
| WO2020124582A1 (en) * | 2018-12-21 | 2020-06-25 | Oppo广东移动通信有限公司 | Receiving apparatus and wireless charging method |
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| CN1874048A (en) * | 2006-04-28 | 2006-12-06 | 清华大学 | Wireless charging device through skin in use for implantation type medical treatment instrument |
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Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102946133A (en) * | 2012-11-11 | 2013-02-27 | 国家电网公司 | Non-contact type power supply device |
| CN103840538A (en) * | 2012-11-21 | 2014-06-04 | 江苏天宇光伏科技有限公司 | Wireless charging mobile power supply |
| WO2014176856A1 (en) * | 2013-04-28 | 2014-11-06 | 海尔集团技术研发中心 | Method and system for wireless electric energy transmission |
| WO2014166204A1 (en) * | 2013-07-24 | 2014-10-16 | 中兴通讯股份有限公司 | Wireless charging device and method |
| US9893558B2 (en) | 2013-07-24 | 2018-02-13 | Zte Corporation | Wireless charging device and method |
| CN103986210A (en) * | 2014-05-26 | 2014-08-13 | 杭州电子科技大学 | Intelligent charger |
| CN104598052A (en) * | 2014-09-23 | 2015-05-06 | 华强云投资控股有限公司 | Wireless charging electromagnetic pen and system thereof |
| CN104598052B (en) * | 2014-09-23 | 2018-03-30 | 华强云投资控股有限公司 | A kind of wireless charging time writer and its system |
| CN104917266A (en) * | 2015-07-10 | 2015-09-16 | 李文华 | Emergency starting power supply with multi-gear wireless charge function for automobile |
| CN104993555A (en) * | 2015-08-08 | 2015-10-21 | 国网山东省电力公司枣庄供电公司 | Remote control 5-prevention key charger |
| 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 |
| CN105464144A (en) * | 2015-12-24 | 2016-04-06 | 上海华魏光纤传感技术有限公司 | Intelligent well cover monitoring system used for monitoring well cover locking state |
| CN105464143A (en) * | 2015-12-24 | 2016-04-06 | 上海华魏光纤传感技术有限公司 | Tamper alarm control system of intelligent well cover |
| CN105604095A (en) * | 2015-12-24 | 2016-05-25 | 上海华魏光纤传感技术有限公司 | Intelligent electronic well lid control system |
| CN109247039A (en) * | 2016-05-13 | 2019-01-18 | Lg伊诺特有限公司 | Wireless charging method and its device and system |
| CN106253496A (en) * | 2016-08-17 | 2016-12-21 | 桐城信邦电子有限公司 | A kind of radio energy transmission system of novel small-power electronic product |
| CN106503775A (en) * | 2016-11-08 | 2017-03-15 | 合肥工业大学 | Being taken based on the television tower of RFID can energy supplying system |
| CN110214402A (en) * | 2017-04-07 | 2019-09-06 | Oppo广东移动通信有限公司 | Wireless charging system, device, method and charging equipment |
| CN110214402B (en) * | 2017-04-07 | 2023-12-26 | Oppo广东移动通信有限公司 | Wireless charging system, device and method and equipment to be charged |
| CN107482739A (en) * | 2017-08-07 | 2017-12-15 | 珠海三吉士健康科技有限公司 | A kind of battery induction charging device and its system and control method |
| CN107631196A (en) * | 2017-09-14 | 2018-01-26 | 佛山市利升光电有限公司 | A kind of LED Intelligent lamps of the touch light modulation with wireless charging function |
| CN109831012A (en) * | 2017-11-18 | 2019-05-31 | 长沙鲁维湘机电科技有限公司 | A kind of monolithic processor controlled wireless charging system of application |
| WO2020124582A1 (en) * | 2018-12-21 | 2020-06-25 | Oppo广东移动通信有限公司 | Receiving apparatus and wireless charging method |
| CN110927365A (en) * | 2019-11-19 | 2020-03-27 | 广州圣安环保科技有限公司 | Humidity sensing system for building and control method thereof |
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Application publication date: 20101222 |