CN102545331A - 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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- CN102545331A CN102545331A CN2012100014537A CN201210001453A CN102545331A CN 102545331 A CN102545331 A CN 102545331A CN 2012100014537 A CN2012100014537 A CN 2012100014537A CN 201210001453 A CN201210001453 A CN 201210001453A CN 102545331 A CN102545331 A CN 102545331A
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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 is in the wireless charging process, and in charging process, make whole charging system can have following technical problem through existing radiating circuit: 1, quiescent dissipation is than higher; 2, the state in the charging process can't be monitored in real time; 3, charge efficiency in the 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 that is connected with power supply unit, HF switch control circuit that is connected with overvoltage crowbar and the wireless transmit antenna that is connected with the HF switch control circuit;
Be provided with current sampling circuit between said overvoltage crowbar and the HF switch control circuit, the central processing unit that is connected with current sampling circuit, this central processing unit also is connected with the HF switch control circuit, in order to control its open and close; Also be connected with current detecting unit on the said current sampling circuit;
Also be provided with temperature collecting cell, state indicating member, clock circuit and JTAG (downloading) unit on the said central processing unit;
Said HF switch control circuit comprises drive circuit, the switch protection circuit that is connected with drive circuit, and the HF switch that is connected with the switch protection circuit specifically is the input terminal that is connected in HF switch; The input terminal of said HF switch also is connected with one or more output voltage sampling circuit; The lead-out terminal of said HF switch is connected with one or more transmitting coils.
Concrete technical scheme is following:
A kind of vehicle carried mobile phone wireless charging emission system; It is used for mobile phone is carried out wireless charging, comprises power supply unit, overvoltage crowbar; HF switch control circuit and wireless transmit antenna; Said overvoltage crowbar is connected with power supply unit, and said HF switch control circuit is connected with overvoltage crowbar, and said wireless transmit antenna is connected with the HF switch control circuit.
Further, be provided with current sampling circuit and central processing unit between said overvoltage crowbar and the HF switch control circuit, said central processing unit is connected with current sampling circuit, is connected in order to control its open and close with the HF switch control circuit simultaneously.
Further, said HF switch control circuit comprises drive circuit, switch protection circuit and HF switch, and the switch protection circuit is connected with drive circuit, and HF switch is connected with the switch protection circuit.
Further, HF switch has an input terminal, and the switch protection circuit connects this input terminal.
Further, the input terminal of HF switch also is connected with one or more output voltage sampling circuit and one or more transmitting coil.
Further, said power supply unit adopts the DC12V power supply.
Further, also be connected with current detecting unit on the said current sampling circuit.
Further, also be provided with temperature collecting cell, state indicating member, clock circuit and the JTAG unit that downloads on the said central processing unit.
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 the load size: system does not get into holding state automatically when having load; During to the wireless charger emitting area, system detects the existence of load automatically as the mobile phone of wireless receiving charging, and system produces the emission of big electric current, thereby makes mobile phone entering charged state; When mobile phone is about to charge when saturated; System gets into the trickle charge state; Reduce current emission, get into the charging saturation condition after about 10 minutes of trickle charge time automatically, system will further reduce emission current under saturation condition; Wait for this moment and take mobile phone away, system gets into holding state automatically when mobile phone is taken away.
Further; Be provided with a charging indicator light, standby indicating lamp Chang Liang when system is in holding state, charging indicator light quickflashing when system is in charged state; Charging indicator light dodges slowly when system is in the trickle charge state, and saturated indicator light Chang Liang charges when system is in the charging saturation condition.
Compare the present invention with present prior art: 1, good stability, charge efficiency is high; 2, owing to increased the switch protection circuit, make this system comparatively steady in charging process; 3, the temperature collecting cell that is provided with can be monitored its temperature in real time, guarantees the safety of system; 4, through detection to radiating circuit online in real time electric current, thus the operating state of definite charger.
Description of drawings
Fig. 1 is a 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 among the present invention and HF switch control circuit;
Fig. 4 is the physical circuit figure of current acquisition unit among the present invention;
Fig. 5 is the physical circuit figure of current detecting processing unit among the present invention;
Fig. 6 is the circuit diagram of output voltage sampling unit among the present invention;
Fig. 7 is the physical circuit figure of output voltage sample processing unit among the present invention;
Fig. 8 takes a sample with reference to physical circuit figure for reference voltage among the present invention.
Fig. 9 is the physical circuit figure of the unit that downloads among the present invention;
Figure 10 for charging indicating member among the present invention physical circuit figure.
Embodiment
Describe the present invention according to accompanying drawing below, it is a kind of preferred embodiment in the numerous embodiments of the present invention.
Referring to Fig. 1-shown in Figure 2; Vehicle carried mobile phone wireless transmitting system provided by the invention comprises power supply unit; The overvoltage crowbar that is connected with power supply unit, HF switch control circuit that is connected with overvoltage crowbar and the wireless transmit antenna that is connected with the HF switch control circuit; Be provided with current sampling circuit between said overvoltage crowbar and the HF switch control circuit, the central processing unit that is connected with current sampling circuit, this central processing unit also is connected with the HF switch control circuit, in order to control its open and close; Also be connected with current detecting unit on the said current sampling circuit; Also be provided with temperature collecting cell, state indicating member, crystal oscillating circuit and the monomeric unit that downloads on the said central processing unit; Said HF switch control circuit comprises drive circuit, the switch protection circuit that is connected with drive circuit, and the HF switch that is connected with the switch protection circuit specifically is the input terminal that is connected in HF switch; The input terminal of said HF switch also is connected with one or more output sample circuits; The lead-out terminal of said HF switch is connected with one or more transmitting coils.
Referring to shown in Figure 3, said drive circuit is by chip for driving and the driving resistor R4 that is connected respectively with the input pin INA of chip for driving and INB, R5, R13, R14; Wherein resistance R 4 is connected with R5, and the lead-in wire of the pin PTD3 that central authorities handle is connected between resistance R 4 and the R5;
Wherein resistance R 13 is connected with R14, and the lead-in wire of the pin PTD2 that central authorities handle is connected between resistance R 13 and the R14;
The output pin OUTA of metal-oxide-semiconductor chip for driving is connected with the switch protection circuit with OUTB; This switch protection circuit is summarized triode Q1 and triode Q2; Be arranged at the diode D8 between triode Q1 emitter and the base stage, be arranged at the diode D9 between triode Q2 emitter and the base stage; The base stage of triode Q1 was advanced resistance R 6 and was connected with output pin OUTA; The base stage of triode Q2 was advanced resistance R 7 and was connected with output pin OUTB.
Triode Q1 in the switch protection circuit is connected with the integrated MOS pipe respectively with triode Q2, specifically is that 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 the LC resonant circuit.
Referring to shown in Figure 4; The current acquisition unit is mainly by current sampling resistor R2; The capacitor C 23 that is connected with sampling resistor R2; Fig. 4 remainder is the power circuit (for CPU etc. provides stable DC5V power supply) of DC5V, and capacitor C 1, C2 and voltage-stabiliser tube D1 that its input connects are arranged at the diode D2 between voltage-stabiliser tube D1 and the 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) that connects with resistance R 1.
Referring to 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 that is connected with pin V+ by C10 and C11 parallel connection.
Referring to shown in Figure 6, also be provided with one or the terminal of sampling with the input of integrated MOS pipe more, this sampling terminal directly with being connected of output sampling unit, the 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 both connect back and parallel with one another, and C19 is parallelly connected with C20, and R15 is arranged between C19 and the C20.Other output sampling unit also is same structure.
Referring to 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.
Referring to shown in Figure 8, power subsystem is connected with voltage contrasting amplified circuit, specifically is made up of resistance R 19-R25; Wherein, R19 connects with R20, and R21 connects with R22; R23, R24, R25 series connection; The three is parallel with one another again.
Referring to shown in Figure 9, the physical circuit of the unit that downloads is connected with the pin BKGD of central processing unit, also is connected with resistance R 8 through connector, system reset switch S1, and the capacitor C 9 parallelly connected with reset switch S1; Also comprise the resistance R 9 that is connected with pin 1.
Referring to shown in Figure 10, indicating member is connected with the VDD pin of central processing unit, mainly is made up of a plurality of light-emitting diodes, between light-emitting diode and VDD pin, also is provided with resistance R 11 and R12.
Operation principle of the present invention is following: this mobile phone wireless charger supply power voltage is DC12V; The work maximum current is 2A, and quiescent current is 26mA, to single cell-phone charging electric current about 300mA; The wireless transmit frequency is about 112KHZ; This mobile phone wireless charger can be controlled charged state automatically according to the load size, and system does not get into holding state automatically when having load, at this moment standby indicating lamp Chang Liang (standby current is about 26mA); During to the wireless charger emitting area, system detects the existence of load automatically as the mobile phone of wireless receiving charging, and this moment, system can produce the emission of big electric current, thereby made mobile phone entering charged state (charging indicator light quickflashing); When mobile phone is about to charge when saturated; System can be introduced into trickle charge state (charging indicator light dodges slowly); This moment, system can reduce current emission (approximately 70mA); Automatically get into charging saturation condition (saturated indicator light Chang Liang charges) after about 10 minutes of trickle charge time, system will further reduce emission current (the saturation emission electric current is about 32mA) again under saturation condition; Wait for this moment and take mobile phone away, system gets into holding state automatically when mobile phone is taken away.
Combine accompanying drawing that the present invention has been carried out exemplary description above; Obviously the concrete realization of the present invention does not receive the restriction of aforesaid way; As long as the various improvement of having 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 (10)
1. a vehicle carried mobile phone wireless charging emission system is characterized in that, it is used for mobile phone is carried out wireless charging; Comprise power supply unit; Overvoltage crowbar, HF switch control circuit and wireless transmit antenna, said overvoltage crowbar is connected with power supply unit; Said HF switch control circuit is connected with overvoltage crowbar, and said wireless transmit antenna is connected with the HF switch control circuit.
2. vehicle carried mobile phone wireless charging emission system as claimed in claim 1; It is characterized in that; Be provided with current sampling circuit and central processing unit between said overvoltage crowbar and the HF switch control circuit; Said central processing unit is connected with current sampling circuit, is connected in order to control its open and close with the HF switch control circuit simultaneously.
3. according to claim 1 or claim 2 vehicle carried mobile phone wireless charging emission system; It is characterized in that said HF switch control circuit comprises drive circuit, switch protection circuit and HF switch; The switch protection circuit is connected with drive circuit, and HF switch is connected with the switch protection circuit.
4. vehicle carried mobile phone wireless charging emission system as claimed in claim 3 is characterized in that HF switch has an input terminal, and the switch protection circuit connects this input terminal.
5. like claim 3 or 4 described vehicle carried mobile phone wireless charging emission systems, it is characterized in that the input terminal of HF switch also is connected with one or more output voltage sampling circuit and one or more transmitting coil.
6. like each described vehicle carried mobile phone wireless charging emission system among the claim 1-5, it is characterized in that said power supply unit adopts the DC12V power supply.
7. like each described vehicle carried mobile phone wireless charging emission system among the claim 1-6, it is characterized in that, also be connected with current detecting unit on the said current sampling circuit.
8. like each described vehicle carried mobile phone wireless charging emission system among the claim 1-7, it is characterized in that, also be provided with temperature collecting cell, state indicating member, clock circuit and the JTAG unit that downloads on the said central processing unit.
9. like the control method of the said vehicle carried mobile phone wireless charging of claim 1-8 emission system, it is characterized in that vehicle carried mobile phone wireless charging emission system is controlled charged state automatically according to the load size: system does not get into holding state automatically when having load; During to the wireless charger emitting area, system detects the existence of load automatically as the mobile phone of wireless receiving charging, and system produces the emission of big electric current, thereby makes mobile phone entering charged state; When mobile phone is about to charge when saturated; System gets into the trickle charge state; Reduce current emission, get into the charging saturation condition after about 10 minutes of trickle charge time automatically, system will further reduce emission current under saturation condition; Wait for this moment and take mobile phone away, system gets into holding state automatically when mobile phone is taken away.
10. like the control method of the said vehicle carried mobile phone wireless charging of claim 9 emission system; It is characterized in that; Be provided with a charging indicator light, standby indicating lamp Chang Liang when system is in holding state, charging indicator light quickflashing when system is in charged state; Charging indicator light dodges slowly when system is in the trickle charge state, and saturated indicator light Chang Liang charges when system is in the 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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| CN102545331A true CN102545331A (en) | 2012-07-04 |
| CN102545331B CN102545331B (en) | 2014-03-12 |
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Cited By (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 |
| CN103138409A (en) * | 2013-03-19 | 2013-06-05 | 天宇通讯科技(昆山)有限公司 | Vehicle-mounted portable wireless charging transmitting device |
| 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 |
| CN103607007A (en) * | 2013-11-18 | 2014-02-26 | 奇瑞汽车股份有限公司 | Wireless charging emission circuit |
| CN103840531A (en) * | 2013-12-12 | 2014-06-04 | 苏州旲烔机电科技有限公司 | Vehicle wireless charge emitter and control method thereof |
| CN104065385A (en) * | 2013-03-20 | 2014-09-24 | 凌通科技股份有限公司 | Signal decoding circuit applied to wireless charging or radio frequency identification system |
| CN106154936A (en) * | 2016-09-08 | 2016-11-23 | 湖北亘华工科有限公司 | A kind of multifunctional intellectual panel |
| CN106374635A (en) * | 2016-10-12 | 2017-02-01 | 许继电源有限公司 | Mobile wireless charging emission transmission circuit of electric vehicle |
| 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 |
| CN110768395A (en) * | 2019-09-16 | 2020-02-07 | 南京航空航天大学 | Remote laser automatic charging system with protection function |
| CN111129844A (en) * | 2019-12-31 | 2020-05-08 | 联想(北京)有限公司 | Power supply equipment and method |
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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 |
| CN102017356A (en) * | 2008-02-22 | 2011-04-13 | 捷通国际有限公司 | Inductive power supply system with battery type detection |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN103138409A (en) * | 2013-03-19 | 2013-06-05 | 天宇通讯科技(昆山)有限公司 | Vehicle-mounted portable wireless charging transmitting device |
| 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 |
| CN104065385A (en) * | 2013-03-20 | 2014-09-24 | 凌通科技股份有限公司 | Signal decoding circuit applied to wireless charging or radio frequency identification 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 |
| CN103607007A (en) * | 2013-11-18 | 2014-02-26 | 奇瑞汽车股份有限公司 | Wireless charging emission circuit |
| 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 |
| CN103840531A (en) * | 2013-12-12 | 2014-06-04 | 苏州旲烔机电科技有限公司 | Vehicle wireless charge emitter and control method thereof |
| CN103840531B (en) * | 2013-12-12 | 2016-08-10 | 苏州华昌机电有限公司 | Automobile wireless charging discharger and control method thereof |
| 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 |
| CN106374635A (en) * | 2016-10-12 | 2017-02-01 | 许继电源有限公司 | Mobile wireless charging emission transmission circuit of electric vehicle |
| 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 |
| CN111129844A (en) * | 2019-12-31 | 2020-05-08 | 联想(北京)有限公司 | Power supply equipment and method |
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| CN102545331B (en) | 2014-03-12 |
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