CN109149786A - A kind of magnetic induction mobile phone wireless charging emitter - Google Patents
A kind of magnetic induction mobile phone wireless charging emitter Download PDFInfo
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- CN109149786A CN109149786A CN201710494582.7A CN201710494582A CN109149786A CN 109149786 A CN109149786 A CN 109149786A CN 201710494582 A CN201710494582 A CN 201710494582A CN 109149786 A CN109149786 A CN 109149786A
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- voltage
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- mobile phone
- wireless charging
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- 230000006698 induction Effects 0.000 title claims abstract description 21
- 239000003990 capacitor Substances 0.000 claims abstract description 7
- 238000012544 monitoring process Methods 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- H02J7/025—
Abstract
The present invention relates to a kind of magnetic induction mobile phone wireless charging emitters, including AC power source, the AC power source becomes high frequency electric source after high-frequency converter, then by after capacitor resonant circuit, electric energy is switched into magnetic field energy by primary induction coil, and is charged to wireless charging device；Structure is simple, and matching charging can be carried out with the mobile phone for having wireless power function, easy to use.The PLL phase-locked loop module of setting can allow transmitting module work in power factor close under 1 or the resonant state equal to 1, so that the system made obtains higher energy transmission efficiency.
Description
Technical field
The present invention relates to wireless charging device field, specifically a kind of magnetic induction mobile phone wireless charging emitter.
Background technique
There is the situation increased rapidly in the mobile digitals product such as mobile phone, tablet computer, camera market in recent years, adjoint
The diversification of portable device function, the increase of power consumption, consumer also improved to the frequency that portable device charges.But
It is that existing mobile phone charging multi-pass crosses wired mode progress, and different manufacturers charging head standard disunity, phone charger can not lead to
With making troubles to user.
Summary of the invention
It is existing to solve technical problem to be solved by the invention is to provide a kind of magnetic induction mobile phone wireless charging emitter
There is defect present in technology.
The technical scheme to solve the above technical problems is that
A kind of magnetic induction mobile phone wireless charging emitter, including AC power source, the AC power source pass through high frequency conversion
Become high frequency electric source after device, then by electric energy being switched to magnetic field energy by primary induction coil, and to nothing after capacitor resonant circuit
Line charge electric installation charges；The primary induction coil is also connected with voltage signal sample circuit, primary for real-time monitoring
The voltage of induction coil adjusts electric current by current regulating circuit, so as to adjust primary induction coil when there is over-voltage
Voltage；The capacitor resonant circuit is connected with voltage-phase monitoring modular, and the comparison voltage of acquisition is input to PLL phaselocked loop
The phase difference of comparison voltage and reference voltage is exported by the PLL phase-locked loop module, and then controls collection voltages and ginseng by module
The phase difference for examining voltage is locked in 90 °.
Further, the PLL phaselocked loop includes comparison voltage and reference voltage input port, comparison voltage and reference voltage
After the low-pass filtered device processing of the voltage difference generated after phase comparator, it is converted to d. c. voltage signal, the DC voltage
Signal adjusts the output signal frequency of voltage controlled oscillator, so that the phase difference of comparison voltage and reference voltage is stablized at 90 °.
The beneficial effects of the present invention are: structure is simple, and can match fill with the mobile phone for having wireless power function
Electricity, it is easy to use.The PLL phase-locked loop module of setting can allow transmitting module work in power factor close to 1 or equal to 1
Under resonant state, so that the system made obtains higher energy transmission efficiency.
Detailed description of the invention
Fig. 1 is transmitting module functional block diagram of the present invention；
Fig. 2 is PLL phase-locked loop control circuit functional block diagram of the present invention；
Fig. 3 is voltage detection protection circuit figure of the present invention
Specific embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the invention.
The emitter as shown in Figure 1, a kind of magnetic induction mobile phone wireless charges, including AC power source, the AC power source warp
Become high frequency electric source after crossing high-frequency converter, then by the way that electric energy is switched to magnetic by primary induction coil after capacitor resonant circuit
Field energy, and charge to wireless charging device；The primary induction coil is also connected with voltage signal sample circuit, for real
When monitoring primary induction coil voltage electric current is adjusted by current regulating circuit, so as to adjust primary when there is over-voltage
The voltage of induction coil；The capacitor resonant circuit is connected with voltage-phase monitoring modular, and the comparison voltage of acquisition is inputted
To PLL phase-locked loop module, the phase difference of comparison voltage and reference voltage is exported by the PLL phase-locked loop module, and then is controlled
The phase difference of collection voltages and reference voltage is locked in 90 °.
Further, the PLL phaselocked loop includes comparison voltage and reference voltage input port, comparison voltage and reference voltage
After the low-pass filtered device processing of the voltage difference generated after phase comparator, it is converted to d. c. voltage signal, the DC voltage
Signal adjusts the output signal frequency of voltage controlled oscillator, so that the phase difference of comparison voltage and reference voltage is stablized at 90 °.
Referring specifically to attached drawing 2, in order to allow transmitting module work in power factor close under 1 or the resonant state equal to 1,
System to make obtains higher energy transmission efficiency, by phase-locked loop control technology (PLL), realizes electrical energy transformer pair
The variation of frequency caused by load changes is tracked, and will be detailed below the operating principle of circuit, as shown in Fig. 2, lock
Phase chip can adjust the square-wave signal frequency of voltage controlled oscillator output end, make the comparison signal and reference signal phase difference of input terminal
It is maintained at 0 ° or 90 °.
Fig. 3 show voltage detection protection circuit figure, the reflection resistance when receiving coil is far from transmitting coil, between them
Anti- to disappear, if the frequency of inverter work at this time is close from resonance frequency, the voltage gain on transmitting coil can become very
Greatly, it is therefore desirable to which this voltage gain signal is fed back to current regulating circuit by overvoltage crowbar in time.Uv-coil at this time
Greater than Uc+, comparator output terminal V-CH becomes low level from high level.Current regulating circuit is started to work, and is reduced electric current, is prevented
There is overpressure situation in transmitting module.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (2)
- The emitter 1. a kind of magnetic induction mobile phone wireless charges, it is characterised in that: including AC power source, the AC power source is passed through Become high frequency electric source after high-frequency converter, then by the way that electric energy is switched to magnetic field by primary induction coil after capacitor resonant circuit Can, and charge to wireless charging device；The primary induction coil is also connected with voltage signal sample circuit, for real-time The voltage of monitoring primary induction coil adjusts electric current by current regulating circuit when there is over-voltage, so as to adjust primary sense Answer the voltage of coil；The capacitor resonant circuit is connected with voltage-phase monitoring modular, and the comparison voltage of acquisition is input to The phase difference of comparison voltage and reference voltage is exported by the PLL phase-locked loop module, and then controls and adopt by PLL phase-locked loop module The phase difference of collecting voltage and reference voltage is locked in 90 °.
- The emitter 2. a kind of magnetic induction mobile phone wireless according to claim 1 charges, it is characterised in that: the PLL lock Phase ring includes comparison voltage and reference voltage input port, the voltage that comparison voltage and reference voltage generate after phase comparator After the low-pass filtered device processing of difference, it is converted to d. c. voltage signal, which adjusts the output letter of voltage controlled oscillator Number frequency, so that the phase difference of comparison voltage and reference voltage is stablized at 90 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710494582.7A CN109149786A (en) | 2017-06-26 | 2017-06-26 | A kind of magnetic induction mobile phone wireless charging emitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710494582.7A CN109149786A (en) | 2017-06-26 | 2017-06-26 | A kind of magnetic induction mobile phone wireless charging emitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109149786A true CN109149786A (en) | 2019-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201710494582.7A Pending CN109149786A (en) | 2017-06-26 | 2017-06-26 | A kind of magnetic induction mobile phone wireless charging emitter |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113036946A (en) * | 2019-12-25 | 2021-06-25 | 圣邦微电子（北京）股份有限公司 | Wireless charging device and demodulation module thereof |
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| US20110084752A1 (en) * | 2009-10-08 | 2011-04-14 | Etymotic Research Inc. | Systems and Methods for Maintaining a Drive Signal to a Resonant Circuit at a Resonant Frequency |
| CN102149425A (en) * | 2008-09-10 | 2011-08-10 | 海德威公司 | TET system for implanted medical device |
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| TW201405995A (en) * | 2012-07-24 | 2014-02-01 | Powerwow Technology Inc | Inductive power transmission apparatus and non-contact inductive power transmission system |
| CN104426210A (en) * | 2013-08-30 | 2015-03-18 | 凌通科技股份有限公司 | Wireless charging circuit and abnormal state protection circuit thereof |
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| CN106505749A (en) * | 2016-11-04 | 2017-03-15 | 华南理工大学 | The method of fractional order electric capacity stable resonant oscillation wireless power transmission coil resonance frequency |
| CN207082912U (en) * | 2017-06-26 | 2018-03-09 | 北京中诺智电科技有限公司 | A kind of magnetic induction mobile phone wireless charging emitter |
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2017
- 2017-06-26 CN CN201710494582.7A patent/CN109149786A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1643996A (en) * | 2002-03-13 | 2005-07-20 | 皇家飞利浦电子股份有限公司 | Circuit and method of igniting a high-pressure lamp |
| CN102149425A (en) * | 2008-09-10 | 2011-08-10 | 海德威公司 | TET system for implanted medical device |
| US20110084752A1 (en) * | 2009-10-08 | 2011-04-14 | Etymotic Research Inc. | Systems and Methods for Maintaining a Drive Signal to a Resonant Circuit at a Resonant Frequency |
| TW201405995A (en) * | 2012-07-24 | 2014-02-01 | Powerwow Technology Inc | Inductive power transmission apparatus and non-contact inductive power transmission system |
| CN103312050A (en) * | 2013-06-14 | 2013-09-18 | 清华大学 | Active-receiving wireless energy transmission method and device |
| CN104426210A (en) * | 2013-08-30 | 2015-03-18 | 凌通科技股份有限公司 | Wireless charging circuit and abnormal state protection circuit thereof |
| CN105391192A (en) * | 2015-11-24 | 2016-03-09 | 宁波微鹅电子科技有限公司 | Electric energy transmitting terminal and wireless charging device |
| CN106505749A (en) * | 2016-11-04 | 2017-03-15 | 华南理工大学 | The method of fractional order electric capacity stable resonant oscillation wireless power transmission coil resonance frequency |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113036946A (en) * | 2019-12-25 | 2021-06-25 | 圣邦微电子（北京）股份有限公司 | Wireless charging device and demodulation module thereof |
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Address after: 102204 No. 237, East Second Floor, Liucun Town Industrial Enterprise Corporation, Changping District, Beijing Applicant after: Beijing CHINO Zhi Electric Technology Co., Ltd. Address before: 102204 No. 237, East Second Floor, Liucun Town Industrial Enterprise Corporation, Changping District, Beijing Applicant before: Beijing CHINO Electric Power Engineering Co., Ltd. |