CN103560551B - A kind of for the cue circuit during charging complete of vehicle carried mobile phone wireless charger - Google Patents
A kind of for the cue circuit during charging complete of vehicle carried mobile phone wireless charger Download PDFInfo
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- CN103560551B CN103560551B CN201310467143.9A CN201310467143A CN103560551B CN 103560551 B CN103560551 B CN 103560551B CN 201310467143 A CN201310467143 A CN 201310467143A CN 103560551 B CN103560551 B CN 103560551B
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Abstract
The invention discloses a kind of for the cue circuit during charging complete of vehicle carried mobile phone wireless charger, comprising car load power supply is be connected to transmitting coil after radiating circuit is powered, be converted into mobile phone through receiving circuit after receiving coil receives electromagnetic induction to power, it is characterized in that: described car load power supply is simultaneously for control circuit is powered, and control circuit connects drive circuit and drives radiating circuit; The sampled voltage of transmitting coil is passed to the reference voltage that charging complete cue circuit and voltage reference produce circuit and contrasts by current detection circuit, and charging complete cue circuit drives buzzer to point out.Owing to adopting above-mentioned structure, the invention has the advantages that: 1, corresponding prompting can be made after load is full of electricity; 2, structure is simple, without the need to increasing too much production cost; 3, to save the energy, raise the efficiency, reduce Contamination of Electromagnetic Wave.
Description
Technical field
The present invention relates to the application of onboard wireless charger, particularly a kind of for the cue circuit during charging complete of vehicle carried mobile phone wireless charger.
Background technology
Wireless charging is that one does not need to be connected by conductor, or the charging new technology of plug connector grafting, electric energy conversion, by an energy transmitting terminal, is magnetic energy by it, then magnetic energy is converted into powering load after electric energy through receiving terminal, this technology successful Application in the middle of each electronic product.
And in existing vehicle-mounted wireless charging device, charging end (electric energy transmitting terminal) for powering load is in running order all the time, even if when the load of electric energy receiving terminal has been full of electricity, existing wireless charging device remains and is in normal operating conditions, and its transmitting terminal still ceaselessly externally launches electric energy.
Due to above-mentioned problem, provide a kind of cue circuit for onboard wireless charger, can make corresponding prompting after load is full of electricity, this is the problem that prior art needs to solve.
Summary of the invention
Technical problem to be solved by this invention is, provides a kind of for the cue circuit during charging complete of vehicle carried mobile phone wireless charger, to reach the object making corresponding prompting after load is full of electricity.
For achieving the above object, technical scheme of the present invention is, a kind of for the cue circuit during charging complete of vehicle carried mobile phone wireless charger, comprising car load power supply is be connected to transmitting coil after radiating circuit is powered, be converted into mobile phone through receiving circuit after receiving coil receives electromagnetic induction to power, it is characterized in that: described car load power supply is simultaneously for control circuit is powered, and control circuit connects drive circuit and drives radiating circuit; The sampled voltage of transmitting coil is passed to the reference voltage that charging complete cue circuit and voltage reference produce circuit and contrasts by current detection circuit, and charging complete cue circuit drives buzzer to point out.
The driving chip U1 that described control circuit controls in drive circuit exports drive waveforms, and drive triode Q1, Q2 alternate conduction of radiating circuit, transmitting coil generation current, sends magnetic field energy; Resistance R3 in current detection circuit detects the electric current in transmitting coil, form sampled voltage Vs, the reference voltage that the RC filter circuit that Vs forms through resistance R4, electric capacity C6 produces circuit to the inverting input of comparator U2 in charging complete cue circuit and voltage reference compares.
It is that power Vcc connects three terminal regulator U3 generation reference voltage through resistance R7 that described voltage reference produces circuit, and the voltage divider through resistance R9, resistance R10 composition forms the in-phase input end that reference voltage V ref, Vref meet comparator U2.
Comparator U2 in described charging complete cue circuit when charge do not complete time, i.e. sampled voltage Vs > reference voltage V ref, comparator U2 output low level, triode Q4, triode Q3 end; When charging is complete, namely sampled voltage Vs < reference voltage V ref, comparator U2 export high level, triode Q4, triode Q3 conducting, and buzzer is energized, prompting charging complete.
It is that the pwm signal of 50% is to drive circuit that described control circuit sends duty ratio.
The reference voltage that described voltage reference produces circuit generation is 2.5V.
The model of described driving chip U1 is TPS28225D; The model of three terminal regulator U3 is TL431.
For the cue circuit during charging complete of vehicle carried mobile phone wireless charger, owing to adopting above-mentioned structure, the invention has the advantages that: 1, corresponding prompting can be made after load is full of electricity; 2, structure is simple, without the need to increasing too much production cost; 3, to save the energy, raise the efficiency, reduce Contamination of Electromagnetic Wave.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation;
Fig. 1 is that the present invention is a kind of for the cue circuit structural representation during charging complete of vehicle carried mobile phone wireless charger;
Fig. 2 is a kind of circuit diagram for the cue circuit during charging complete of vehicle carried mobile phone wireless charger of the present invention;
In Fig. 1-2,1, car load power supply; 2, radiating circuit; 3, transmitting coil; 4, control circuit; 5, drive circuit; 6, current detection circuit; 7, charging complete cue circuit; 8, voltage reference produces circuit; 9, buzzer; 10, receiving coil; 11, receiving circuit; 12, mobile phone.
Embodiment
As shown in Figure 1, the present invention is for comprising car load power supply 1 for being connected to transmitting coil 3 after radiating circuit 2 power supply, be converted into mobile phone 12 through receiving circuit 11 after receiving coil 10 receives electromagnetic induction to power, it is characterized in that: described car load power supply 1 is powered for control circuit 4 simultaneously, control circuit 4 connects drive circuit 5 and drives radiating circuit 2; The sampled voltage of transmitting coil 3 is passed to the reference voltage that charging complete cue circuit 7 and voltage reference produce circuit 8 and contrasts by current detection circuit 6, and charging complete cue circuit 7 drives buzzer 9 to point out.
Specifically as shown in Figure 2, radiating circuit of the present invention is made up of triode Q1, triode Q2, electric capacity C1, electric capacity C4; Drive circuit is made up of driving chip U1, resistance R1, resistance R2, electric capacity C3, electric capacity C5; Current detection circuit is made up of resistance R3, resistance R4, electric capacity C6; Charging complete cue circuit is made up of comparator U2, triode Q3, triode Q4, resistance R5, resistance R6, resistance R8.Voltage reference produces circuit and is made up of three sections of pressurizer U3, resistance R7, resistance R9, resistance R10.
Control circuit 4 send duty ratio be the pwm signal of 50% to 3 pin of driving chip U1 in drive circuit 5, driving chip U1 exports drive waveforms, and make triode Q1, triode Q2 alternate conduction, transmitting coil 3 generation current, sends magnetic field energy.Resistance R3 detects the electric current in transmitting coil 3, forms sampled voltage Vs, and the RC filter circuit that Vs forms through resistance R4, electric capacity C6 is to the inverting input of comparator U2.Vcc meets three terminal regulator U3 through resistance R7, produces the reference voltage of 2.5V, and the voltage divider through resistance R9, resistance R10 composition forms the in-phase input end that Vref, Vref meet comparator U2.When not completing when charging, Vs > Vref, comparator output low level, triode Q4 ends, and triode Q3 also ends.When charging is complete, the ER effect of transmitting coil 3 obtains minimum and stable, and Vs < Vref, comparator U2 export high level, triode Q4 conducting, triode Q3 also conducting, and buzzer 9 is energized, prompting charging complete.
Wherein the model of driving chip U1 is TPS28225D; The model of three terminal regulator U3 is TL431.
Above by reference to the accompanying drawings to invention has been exemplary description; obvious specific implementation of the present invention is not subject to the restrictions described above; as long as have employed the various improvement that technical solution of the present invention is carried out, or directly apply to other occasion, all within protection scope of the present invention without improving.
Claims (4)
1. one kind for the cue circuit during charging complete of vehicle carried mobile phone wireless charger, comprise car load power supply (1) for being connected to transmitting coil (3) after radiating circuit (2) power supply, mobile phone (12) power supply is converted into through receiving circuit (11) after receiving coil (10) receives electromagnetic induction, it is characterized in that: described car load power supply (1) is control circuit (4) power supply simultaneously, and control circuit (4) connects drive circuit (5) and drives radiating circuit (2); The sampled voltage of transmitting coil (3) is passed to the reference voltage that charging complete cue circuit (7) and voltage reference produce circuit (8) and contrasts by current detection circuit (6), and charging complete cue circuit (7) driving buzzer (9) is pointed out; The driving chip U1 that described control circuit (4) controls in drive circuit (5) exports drive waveforms, and drive triode Q1, Q2 alternate conduction of radiating circuit (2), transmitting coil (3) generation current, sends magnetic field energy; Resistance R3 in current detection circuit (6) detects the electric current in transmitting coil (3), form sampled voltage Vs, the reference voltage that the RC filter circuit that Vs form through resistance R4, electric capacity C6 produces circuit (8) to the inverting input of the middle comparator U2 of charging complete cue circuit (7) and voltage reference compares; Described voltage reference produces circuit (8) and produces reference voltage for power Vcc meets three terminal regulator U3 through resistance R7, and the voltage divider through resistance R9, resistance R10 composition forms the in-phase input end that reference voltage V ref, Vref meet comparator U2; Comparator U2 in described charging complete cue circuit (7) when charge do not complete time, i.e. sampled voltage Vs > reference voltage V ref, comparator U2 output low level, triode Q4, triode Q3 end; When charging is complete, namely sampled voltage Vs < reference voltage V ref, comparator U2 export high level, triode Q4, triode Q3 conducting, and buzzer (9) is energized, prompting charging complete.
2. according to claim 1 a kind of for the cue circuit during charging complete of vehicle carried mobile phone wireless charger, it is characterized in that: it is that the pwm signal of 50% is to drive circuit (5) that described control circuit (4) sends duty ratio.
3. according to claim 2 a kind of for the cue circuit during charging complete of vehicle carried mobile phone wireless charger, it is characterized in that: the reference voltage that described voltage reference generation circuit (8) produces is 2. 5V.
4. a kind of for the cue circuit during charging complete of vehicle carried mobile phone wireless charger according to Claims 2 or 3, is characterized in that: the model of described driving chip U1 is TPS28225D; The model of three terminal regulator U3 is TL431.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310467143.9A CN103560551B (en) | 2013-10-09 | 2013-10-09 | A kind of for the cue circuit during charging complete of vehicle carried mobile phone wireless charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310467143.9A CN103560551B (en) | 2013-10-09 | 2013-10-09 | A kind of for the cue circuit during charging complete of vehicle carried mobile phone wireless charger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103560551A CN103560551A (en) | 2014-02-05 |
| CN103560551B true CN103560551B (en) | 2015-09-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310467143.9A Active CN103560551B (en) | 2013-10-09 | 2013-10-09 | A kind of for the cue circuit during charging complete of vehicle carried mobile phone wireless charger |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115333205A (en) * | 2022-08-31 | 2022-11-11 | 奇瑞汽车股份有限公司 | Mobile phone vehicle-mounted wireless charging state display system and method |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201985596U (en) * | 2011-04-28 | 2011-09-21 | 奇瑞汽车股份有限公司 | Wireless charging system for electric automobile |
| CN202183629U (en) * | 2011-09-14 | 2012-04-04 | 江苏中讯数码电子有限公司 | Intelligent wireless charger |
| CN102593892B (en) * | 2012-01-31 | 2014-10-01 | 奇瑞汽车股份有限公司 | Intelligent charging system of electric automobile |
| CN202586755U (en) * | 2012-04-17 | 2012-12-05 | 奇瑞汽车股份有限公司 | Current sampling circuit used for phase shift full bridge in vehicle-mounted charger |
| CN102856966A (en) * | 2012-08-28 | 2013-01-02 | 奇瑞汽车股份有限公司 | Control circuit for working state of vehicle-mounted wireless charger and control method thereof |
| CN103023964A (en) * | 2012-10-31 | 2013-04-03 | 惠州市德赛西威汽车电子有限公司 | Vehicle-mounted information sharing entertainment system |
| CN103280899B (en) * | 2013-05-24 | 2016-07-13 | 奇瑞汽车股份有限公司 | Wireless charging receiver, discharger and system |
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