CN2378871Y - Non-contact charging power source for wireless mobile telephone - Google Patents
Non-contact charging power source for wireless mobile telephone Download PDFInfo
- Publication number
- CN2378871Y CN2378871Y CN99206716U CN99206716U CN2378871Y CN 2378871 Y CN2378871 Y CN 2378871Y CN 99206716 U CN99206716 U CN 99206716U CN 99206716 U CN99206716 U CN 99206716U CN 2378871 Y CN2378871 Y CN 2378871Y
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- mobile phone
- oscillator
- induction coil
- input
- connects
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model relates to a non-contact charging power source for wireless mobile phones, which is composed of a charging socket part and a mobile phone part. The charging socket part is composed of a transformer, a rectifying filter circuit, a very-high-frequency oscillator, a voltage amplifier, an optical coupler, a power amplifier and a hollow induction coil. The mobile phone part is composed of a hollow induction coil, a rectification circuit and a mobile phone battery. In the utility model, exposed metal charging sheets are removed, a coil hidden in a plastic casing is adopted, and the charging is realized by electromagnetic induction. Therefore, the utility model not only enhances safety and serviceability, but also protects the integrity of appearance.
Description
The utility model relates to the auxiliary device of a kind of communication apparatus, particularly cordless telephone
Existing cordless telephone, the mode of charging mobile phone battery all are that the exposed metal charge sheet charges with the mode that exposed metal charge sheet on the cradle contacts on the employing mobile phone.Alternating current 220V becomes low-voltage ac voltage by transformer T, becomes direct voltage by rectifier rectification again, and by limitting to diode D to charging mobile phone battery.The metal charge sheet that exposes not only influences outward appearance, use reliable, and influence safety.When the first insulation breakdown of pretty depressor T, alternating current 220V voltage just might be scurried exposing on the charge sheet of cradle, can cause electric shock during the human body contact, and the five metals charge sheet rubs the oxidation of ingress of air generation contact wear, the function of influence charging for a long time.
The purpose of this utility model is a kind of contactless charge power supply of design.
The contactless charge power supply of the utility model cordless portable part, comprise cradle partly and mobile phone partly form, cradle partly is made up of transformer, current rectifying and wave filtering circuit, V.H.F. oscillator, voltage amplifier, optical coupler, power amplifier and hollow induction coil, transformer connects the power supply input, transformer output connects the current rectifying and wave filtering circuit input, current rectifying and wave filtering circuit output connects the V.H.F. oscillator input, V.H.F. oscillator output connects the voltage amplifier input, and the voltage amplifier input connects the hollow induction coil; Mobile phone partly is made up of empty induction coil, rectification circuit, battery of mobile phone, and the hollow induction coil connects the rectification circuit input, rectification circuit output catcher machine battery.Alternating current 220V voltage becomes low pressure time sequence voltage by transformer T, and amplify by rectifier circuit, pass through the optically coupled circuit shaping again, the work of driving pulse power amplifier converts electromagnetic wave to through on the hollow induction coil L2 of pulse current in charger of power amplification.Electromagnetic wave has penetrability, can see through on the empty induction coil L3 of plastic casing in mobile phone and induce alternating voltage, and this alternating voltage is by the hf rectifier rectification, and the transformation dc pulse voltage charges to battery of mobile phone.
The utility model has been removed the metal charge sheet that exposes, and adopts hidden coil in plastic housing, charges by the form of electromagnetic induction, has not only improved fail safe, and the reliability of use has also protected outward appearance complete.The frequency of oscillation of oscillator adopts very high frequency(VHF) in the utility model, the one, in order to improve conversion efficiency, the 2nd, because the frequency height, coil L2, coil L3 just need not to add the conductive magnetism iron core, as long as just can with hollow coil, can reduce volume like this, reduce cost, the 3rd, the frequency electromagnetic waves penetrability is strong, and coil L2, coil L3 need not very closely, can be contained in respectively in the plastics of cradle and mobile phone, increase fail safe.
Accompanying drawing 1 is existing sheet metal charge mobile phone battery circuit block diagram;
Accompanying drawing 2 is the utility model circuit block-diagram;
Accompanying drawing 3 is the utility model embodiment electronic-circuit diagram.
The utility model is described in further detail below in conjunction with accompanying drawing 3 embodiment:
Alternating current 220V becomes low-voltage ac voltage by transformer T, and be rectified into dc pulse voltage by the full-wave rectifying circuit of forming by second tube sheet D1, D2, D3, D4, the filter filtering transformation that process capacitor C 1, C2, C9, C10 and inductance L 1 are formed is direct voltage stably, triode Q1 and crystal oscillator TX1, resistance R 1, R2, R3, capacitor C 3, C4, C5 form V.H.F. oscillator, and this oscillator produces the frequency of oscillation about a 4MZ.This signal is coupled to by triode Q2, resistance R 4, R5 by capacitor C 6, the voltage amplifier that capacitor C 7 is formed carries out voltage amplification, signal after the amplification is delivered to by triode Q3, resistance R 6, R7, R8, resistance R 8 after by optical coupler U1 shaping, and the power amplifier that capacitor C 8, C11, variable capacitance VC1 and hollow inductance coil L2 form amplifies.Variable capacitance VC1 and hollow inductance coil L2 constitute resonant tank, and in coil L2, pulse current is transformed into electromagnetic field.Induce alternating voltage very frequently on the hollow coil L3 of this electromagnetic field in mobile phone, the bridge rectifier rectification by second tube sheet D5, D6, D7, D8 form becomes dc pulse voltage battery of mobile phone is charged.Capacitor C 12, C13 filtering high frequency composition.
Claims (2)
1, the contactless charge power supply of a kind of cordless portable part, comprise cradle partly and mobile phone partly form, it is characterized in that cradle partly is made up of transformer, current rectifying and wave filtering circuit, V.H.F. oscillator, voltage amplifier, optical coupler, power amplifier and hollow induction coil, transformer connects the power supply input, transformer output connects the current rectifying and wave filtering circuit input, current rectifying and wave filtering circuit output connects the V.H.F. oscillator input, V.H.F. oscillator output connects the voltage amplifier input, and the voltage amplifier input connects the hollow induction coil; Mobile phone partly is made up of empty induction coil, rectification circuit, battery of mobile phone, and the hollow induction coil connects the rectification circuit input, rectification circuit output catcher machine battery.
2, according to the contactless charge power supply of the cordless portable part of claim 1, it is characterized in that oscillator by triode Q1 and crystal oscillator TX1, resistance R 1, R2, R3, capacitor C 3, C4, C5 form V.H.F. oscillator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99206716U CN2378871Y (en) | 1999-03-31 | 1999-03-31 | Non-contact charging power source for wireless mobile telephone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99206716U CN2378871Y (en) | 1999-03-31 | 1999-03-31 | Non-contact charging power source for wireless mobile telephone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2378871Y true CN2378871Y (en) | 2000-05-17 |
Family
ID=34000917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99206716U Expired - Fee Related CN2378871Y (en) | 1999-03-31 | 1999-03-31 | Non-contact charging power source for wireless mobile telephone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2378871Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100388352C (en) * | 2001-08-22 | 2008-05-14 | 索尼株式会社 | Information transmission apparatus, information transmission method, and monitoring apparatus |
| CN107112687A (en) * | 2014-11-05 | 2017-08-29 | 阳光股份有限责任公司 | Power coupler |
-
1999
- 1999-03-31 CN CN99206716U patent/CN2378871Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100388352C (en) * | 2001-08-22 | 2008-05-14 | 索尼株式会社 | Information transmission apparatus, information transmission method, and monitoring apparatus |
| CN107112687A (en) * | 2014-11-05 | 2017-08-29 | 阳光股份有限责任公司 | Power coupler |
| CN107112687B (en) * | 2014-11-05 | 2019-09-13 | 阳光股份有限责任公司 | Power coupler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| MM1K | Cease caused by non payment of annual fee |