CN102545331B - Vehicle-mounted cell phone wireless charging and transmitting system and control method therefor - Google Patents
Vehicle-mounted cell phone wireless charging and transmitting system and control method therefor Download PDFInfo
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- CN102545331B CN102545331B CN201210001453.7A CN201210001453A CN102545331B CN 102545331 B CN102545331 B CN 102545331B CN 201210001453 A CN201210001453 A CN 201210001453A CN 102545331 B CN102545331 B CN 102545331B
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Abstract
The invention relates to a vehicle-mounted cell phone wireless charging and transmitting system and a control method therefor. The vehicle-mounted cell phone wireless charging and transmitting system comprises a power supply unit, an over-voltage protection circuit connected with the power supply unit, a high-frequency switch control circuit connected with the over-voltage protection circuit and a wireless transmitting antenna connected with the high-frequency switch control circuit, wherein a current sampling circuit and a central processing unit connected with the current sampling circuit are arranged between the over-voltage protection circuit and the high-frequency switch control circuit; the central processing unit is also connected with the high-frequency switch control circuit and used for controlling the connection and disconnection of the high-frequency switch control circuit; the current sampling circuit is also connected with a current detection unit; a temperature collection unit, a status indication unit, a clock circuit and a JTAG (downloading program) unit are arranged on the central processing unit; the high-frequency switch control circuit comprises a drive circuit, a switching protection circuit connected with the drive circuit and a high-frequency switch connected with the switching protection circuit, and particularly the switching protection circuit is connected with an input terminal of the high-frequency switch; and the input terminal of the high-frequency switch is also connected with one or more output voltage sampling circuits; and an output terminal of the high-frequency switch is connected with one or more transmitting coils.
Description
Technical field
The present invention relates to vehicle carried mobile phone wireless charging field, be specifically related to a kind of vehicle carried mobile phone wireless charging emission system and control method thereof.
Background technology
Existing mobile phone, in wireless charging process, makes whole charging system can have following technical problem by existing radiating circuit: 1, quiescent dissipation is higher in charging process; 2, the state in charging process cannot be monitored in real time; 3, the charge efficiency in charging process and stability are lower.
Summary of the invention
The object of the present invention is to provide a kind of vehicle carried mobile phone wireless charging emission system and control method thereof, vehicle carried mobile phone wireless transmitting system provided by the invention comprises power supply unit, the overvoltage crowbar being connected with power supply unit, the HF switch control circuit being connected with overvoltage crowbar and the wireless transmission antenna being connected with HF switch control circuit;
Between described overvoltage crowbar and HF switch control circuit, be provided with current sampling circuit, the central processing unit being connected with current sampling circuit, this central processing unit is also connected with HF switch control circuit, in order to control its open and close; On described current sampling circuit, be also connected with current detecting unit;
On described central processing unit, be also provided with temperature collecting cell, state indication unit, clock circuit and JTAG (downloading) unit;
Described HF switch control circuit comprises drive circuit, the switch protecting circuit being connected with drive circuit, and the HF switch being connected with switch protecting circuit, is specifically connected in the input terminal of HF switch; The input terminal of described HF switch is also connected with one or more output voltage sampling circuit; The lead-out terminal of described HF switch is connected with one or more transmitting coils.
Concrete technical scheme is as follows:
A kind of vehicle carried mobile phone wireless charging emission system; it is for carrying out wireless charging to mobile phone; comprise power supply unit; overvoltage crowbar; HF switch control circuit and wireless transmission antenna; described overvoltage crowbar is connected with power supply unit, and described HF switch control circuit is connected with overvoltage crowbar, and described wireless transmission antenna is connected with HF switch control circuit.
Further, between described overvoltage crowbar and HF switch control circuit, be provided with current sampling circuit and central processing unit, described central processing unit is connected with current sampling circuit, is connected to control its open and close with HF switch control circuit simultaneously.
Further, described HF switch control circuit comprises drive circuit, switch protecting circuit and HF switch, and switch protecting circuit is connected with drive circuit, and HF switch is connected with switch protecting circuit.
Further, HF switch has an input terminal, and switch protecting circuit connects this input terminal.
Further, the input terminal of HF switch is also connected with one or more output voltage sampling circuit and one or more transmitting coil.
Further, described power supply unit adopts DC12V power supply.
Further, on described current sampling circuit, be also connected with current detecting unit.
Further, on described central processing unit, be also provided with temperature collecting cell, state indication unit, clock circuit and the JTAG unit that downloads.
The control method of above-mentioned vehicle carried mobile phone wireless charging emission system, vehicle carried mobile phone wireless charging emission system is controlled charged state automatically according to load: when there is no load, system does not enter holding state automatically; When the mobile phone that has a wireless receiving charging is during to wireless charger emitting area, system detects the existence of load automatically, and system produces the transmitting of large electric current, thereby makes mobile phone enter charged state; When mobile phone is about to charge when saturated, system enters trickle charge state, reduce current emission, after approximately 10 minutes trickle charge time, automatically enter charging saturation condition, under saturation condition, system will further reduce emission current, now wait for and take mobile phone away, when mobile phone, get travel time system and automatically enter holding state.
Further, be provided with a charging indicator light, as system standby indicating lamp Chang Liang during in holding state, when system charging indicator light quick flashing during in charged state, when system during in trickle charge state charging indicator light dodge slowly, as the system saturated indicator light Chang Liang that charges during in charging saturation condition.
Compare the present invention with currently available technology: 1, good stability, charge efficiency is high; 2,, owing to having increased switch protecting circuit, make this system comparatively steady in charging process; 3, the temperature collecting cell arranging, can monitor in real time to its temperature, guarantees the safety of system; 4, by the detection to the online real-time current of radiating circuit, thus the operating state of definite charger.
Accompanying drawing explanation
Fig. 1 is system principle diagram of the present invention;
Fig. 2 is the theory diagram of medium-high frequency ON-OFF control circuit of the present invention;
Fig. 3 is the structure chart of central processing unit and HF switch control circuit in the present invention;
Fig. 4 is the physical circuit figure of current acquisition unit in the present invention;
Fig. 5 is the physical circuit figure of current detecting processing unit in the present invention;
Fig. 6 is the circuit diagram of output voltage sampling unit in the present invention;
Fig. 7 is the physical circuit figure of output voltage sample processing unit in the present invention;
Fig. 8 is that in the present invention, reference voltage samples with reference to physical circuit figure.
Fig. 9 is the physical circuit figure of unit of downloading in the present invention;
Figure 10 be in the present invention, charge indicating member physical circuit figure.
Embodiment
Describe the present invention with reference to the accompanying drawings below, it is a kind of preferred embodiment in numerous embodiments of the present invention.
Shown in Fig. 1-Fig. 2, vehicle carried mobile phone wireless transmitting system provided by the invention comprises power supply unit, the overvoltage crowbar being connected with power supply unit, the HF switch control circuit being connected with overvoltage crowbar and the wireless transmission antenna being connected with HF switch control circuit; Between described overvoltage crowbar and HF switch control circuit, be provided with current sampling circuit, the central processing unit being connected with current sampling circuit, this central processing unit is also connected with HF switch control circuit, in order to control its open and close; On described current sampling circuit, be also connected with current detecting unit; On described central processing unit, be also provided with temperature collecting cell, state indication unit, crystal oscillating circuit and the monomeric unit that downloads; Described HF switch control circuit comprises drive circuit, the switch protecting circuit being connected with drive circuit, and the HF switch being connected with switch protecting circuit, is specifically connected in the input terminal of HF switch; The input terminal of described HF switch is also connected with one or more output sample circuits; The lead-out terminal of described HF switch is connected with one or more transmitting coils.
Shown in Figure 3, described drive circuit is by the driving resistance R 4 that drives chip and be connected respectively with INB with the input pin INA that drives chip, R5, R13, R14; Wherein resistance R 4 is connected with R5, and the lead-in wire of the pin PTD3 that central authorities process is connected between resistance R 4 and R5;
Wherein resistance R 13 is connected with R14, and the lead-in wire of the pin PTD2 that central authorities process is connected between resistance R 13 and R14;
Metal-oxide-semiconductor drives the output pin OUTA of chip to be connected with switch protecting circuit with OUTB, this switch protecting circuit is summarized triode Q1 and triode Q2, be arranged at the diode D8 between triode Q1 emitter and base stage, be arranged at the diode D9 between triode Q2 emitter and base stage; The base stage of triode Q1 was entered resistance R 6 and was connected with output pin OUTA; The base stage of triode Q2 was entered resistance R 7 and was connected with output pin OUTB.
Triode Q1 in switch protecting circuit is connected with integrated MOS pipe respectively with triode Q2, and specifically the emitter of triode Q1 is connected with the G1 pin of integrated MOS pipe; The emitter of triode Q2 is connected with the G2 pin of integrated MOS pipe; The D1 of integrated MOS pipe or D2 pin are connected with one or more groups and are connected with LC resonant circuit.
Shown in Figure 4, current acquisition unit is mainly by current sampling resistor R2, the capacitor C 23 being connected with sampling resistor R2, Fig. 4 remainder is the power circuit (for CPU etc. provides stable DC5V power supply) of DC5V, capacitor C 1, C2 and voltage-stabiliser tube D1 that its input connects, be arranged at the diode D2 between voltage-stabiliser tube D1 and C1; The output of current management chip is parallel with filter capacitor C3, C4, and resistance R 1; Also comprise the light-emitting diode D3 (indication of DC5V power supply) connecting with resistance R 1.
Shown in Figure 5, current detecting unit comprises the current detecting chip that input is connected with sampling resistor R2 two pins, output connect by C12, the secondary filtering circuit that C13 and C14 compose in parallel; And the decoupling capacitor filter circuit by C10 and C11 parallel connection being connected with pin V+.
Shown in Figure 6, be also provided with one or many sampling terminals with the input of integrated MOS pipe, this sampling terminal directly with being connected of output sampling unit, output sampling unit is mainly by C19, C20, R15, R16, D10 and D11 composition; Wherein D10 connects with C20, D11 and sampling resistor R16 series connection, and after both connect and parallel with one another, C19 is in parallel with C20, and R15 is arranged between C19 and C20.Other output sampling unit is also same structure.
Shown in Figure 7, the input of this voltage contrasting amplified circuit with output to being connected of central processing unit, output directly connects the input pin INPUT1-INPUT8 of central processing unit.
Shown in Figure 8, power subsystem is connected with voltage contrasting amplified circuit, specifically resistance R 19-R25, consists of; Wherein, R19 connects with R20, and R21 connects with R22; R23, R24, R25 series connection; Three is parallel with one another again.
Shown in Figure 9, the physical circuit of the unit that downloads is connected with the pin BKGD of central processing unit, through connector, is also connected with resistance R 8, system reset switch S1, and the capacitor C 9 in parallel with reset switch S1; Also comprise the resistance R 9 being connected with pin 1.
Shown in Figure 10, indicating member is connected with the VDD pin of central processing unit, mainly a plurality of light-emitting diodes, consists of, and between light-emitting diode and VDD pin, is also provided with resistance R 11 and R12.
Operation principle of the present invention is as follows: this mobile phone wireless charger supply power voltage is DC12V, work maximum current is 2A, quiescent current is 26mA, to single mobile phone charging current in about 300mA, wireless transmission frequency is in 112KHZ left and right, this mobile phone wireless charger can be controlled charged state automatically according to load, and when there is no load, system does not enter holding state automatically, now standby indicating lamp Chang Liang (standby current is about 26mA); When the mobile phone that has a wireless receiving charging is during to wireless charger emitting area, system detects the existence of load automatically, and now system can produce the transmitting of large electric current, thereby makes mobile phone enter charged state (charging indicator light quick flashing); When mobile phone is about to charge when saturated, system can be introduced into trickle charge state (charging indicator light dodges slowly), now system can reduce current emission (approximately 70mA), after approximately 10 minutes trickle charge time, automatically enter charging saturation condition (saturated indicator light Chang Liang charges), under saturation condition, system will further reduce again emission current (saturation emission electric current is in 32mA left and right); Now wait for and take mobile phone away, when mobile phone, get travel time system and automatically enter holding state.
By reference to the accompanying drawings the present invention is exemplarily described above; obviously specific implementation of the present invention is not subject to the restrictions described above; as long as the various improvement that adopted method design of the present invention and technical scheme to carry out; or directly apply to other occasion without improvement, all within protection scope of the present invention.
Claims (6)
1. a vehicle carried mobile phone wireless charging emission system, is characterized in that, it,, for mobile phone is carried out to wireless charging, comprises power supply unit, overvoltage crowbar, and HF switch control circuit and wireless transmission antenna, wherein,
Described power supply unit is connected with overvoltage crowbar,
Described HF switch control circuit is connected with overvoltage crowbar, between described overvoltage crowbar and HF switch control circuit, be provided with current sampling circuit and central processing unit, described central processing unit is connected with current sampling circuit, is connected to control its open and close with HF switch control circuit simultaneously;
Described wireless transmission antenna is connected with HF switch control circuit, and described HF switch control circuit comprises drive circuit, switch protecting circuit and HF switch, and switch protecting circuit is connected with drive circuit, and HF switch is connected with switch protecting circuit;
Described HF switch has an input terminal, and switch protecting circuit connects this input terminal, and the input terminal of HF switch is also connected with one or more output voltage sampling circuit and one or more transmitting coil.
2. vehicle carried mobile phone wireless charging emission system as claimed in claim 1, is characterized in that, described power supply unit adopts DC12V power supply.
3. vehicle carried mobile phone wireless charging emission system as claimed in claim 2, is characterized in that, is also connected with current detecting unit on described current sampling circuit.
4. the vehicle carried mobile phone wireless charging emission system as described in any one in claim 1-3, is characterized in that, is also provided with temperature collecting cell, state indication unit, clock circuit and the JTAG unit that downloads on described central processing unit.
5. the control method of vehicle carried mobile phone wireless charging emission system as described in any one in claim 1-3, it is characterized in that, vehicle carried mobile phone wireless charging emission system is controlled charged state automatically according to load: when there is no load, system does not enter holding state automatically; When the mobile phone that has a wireless receiving charging is during to wireless charger emitting area, system detects the existence of load automatically, and system produces the transmitting of large electric current, thereby makes mobile phone enter charged state; When mobile phone is about to charge when saturated, system enters trickle charge state, reduce current emission, after approximately 10 minutes trickle charge time, automatically enter charging saturation condition, under saturation condition, system will further reduce emission current, now wait for and take mobile phone away, when mobile phone, get travel time system and automatically enter holding state.
6. the control method of vehicle carried mobile phone wireless charging emission system as claimed in claim 5, it is characterized in that, be provided with a charging indicator light, as system standby indicating lamp Chang Liang during in holding state, when system charging indicator light quick flashing during in charged state, when system during in trickle charge state charging indicator light dodge slowly, as the system saturated indicator light Chang Liang that charges during in charging saturation condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210001453.7A CN102545331B (en) | 2012-01-05 | 2012-01-05 | Vehicle-mounted cell phone wireless charging and transmitting system and control method therefor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210001453.7A CN102545331B (en) | 2012-01-05 | 2012-01-05 | Vehicle-mounted cell phone wireless charging and transmitting system and control method therefor |
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| Publication Number | Publication Date |
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| CN102545331A CN102545331A (en) | 2012-07-04 |
| CN102545331B true CN102545331B (en) | 2014-03-12 |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103024141A (en) * | 2012-11-13 | 2013-04-03 | 广东欧珀移动通信有限公司 | Method for displaying charging state and mobile intelligent terminal |
| CN103138409B (en) * | 2013-03-19 | 2016-05-04 | 天宇通讯科技(昆山)有限公司 | Vehicle mounted portable wireless charging emitter |
| CN104065385B (en) * | 2013-03-20 | 2017-11-17 | 凌通科技股份有限公司 | Applied to wireless charging or the signal decoding circuit of radio-frequency recognition system |
| CN103545881A (en) * | 2013-09-30 | 2014-01-29 | 上海华勤通讯技术有限公司 | Battery-powered wireless communication device and battery charge recognition method |
| CN103607007B (en) * | 2013-11-18 | 2015-12-02 | 奇瑞汽车股份有限公司 | A kind of wireless charging radiating circuit |
| KR101561471B1 (en) * | 2013-12-12 | 2015-10-30 | 주식회사 대동 | Transmitter of Wireless battery charger and control method for vehicles |
| CN106787035A (en) * | 2015-11-20 | 2017-05-31 | 沈阳新松机器人自动化股份有限公司 | Wireless charging dispensing device, reception device, system and method |
| CN106154936A (en) * | 2016-09-08 | 2016-11-23 | 湖北亘华工科有限公司 | A kind of multifunctional intellectual panel |
| CN106374635B (en) * | 2016-10-12 | 2019-04-02 | 许继电源有限公司 | A kind of electric car mobile wireless charging transmitting transmission circuit |
| CN110768395A (en) * | 2019-09-16 | 2020-02-07 | 南京航空航天大学 | Remote laser automatic charging system with protection function |
| CN111129844B (en) * | 2019-12-31 | 2022-03-25 | 联想(北京)有限公司 | Power supply equipment and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1691459A (en) * | 2004-04-22 | 2005-11-02 | 日本电气株式会社 | Portable electronic device and mobile communication terminal |
| AU2009215446A1 (en) * | 2008-02-22 | 2009-08-27 | Access Business Group International Llc | Inductive power supply system with battery type detection |
| US8310200B2 (en) * | 2009-04-15 | 2012-11-13 | GM Global Technology Operations LLC | Inductive chargers and inductive charging systems for portable electronic devices |
| CN101902062A (en) * | 2010-08-06 | 2010-12-01 | 武汉中原电子集团有限公司 | Vehicle-mounted wireless charging device |
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