CN203166577U - Self-excited oscillation type solar mobile-phone charger structure - Google Patents
Self-excited oscillation type solar mobile-phone charger structure Download PDFInfo
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- CN203166577U CN203166577U CN 201320124885 CN201320124885U CN203166577U CN 203166577 U CN203166577 U CN 203166577U CN 201320124885 CN201320124885 CN 201320124885 CN 201320124885 U CN201320124885 U CN 201320124885U CN 203166577 U CN203166577 U CN 203166577U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model relates to a self-excited oscillation type solar mobile-phone charger structure, which comprises at least one solar cell panel. The solar cell panel is connected with two poles of a single-end fly-back converter circuit, the single-end fly-back converter circuit is composed of a switch tube VT1, a high frequency transformer T1, a primary coil NP, a secondary coil Ns, a rectifier diode VD1 and a capacitor C3, the output end of the single-end fly-back converter circuit is connected with a self-excited oscillation circuit, the self-excited oscillation circuit is composed of the VT1, the T1, an R1, an R3 and a C2, the self-excited oscillation circuit is connected with a voltage limiting circuit and then outputs limited voltage to two poles of a mobile-phone cell, and the voltage limiting circuit comprises an R5, an R6, a VD2 and a VT2. Thus, the mobile-phone cell is prevented from being overcharged.
Description
Technical field
The invention belongs to the charger for mobile phone field, be specially adapted to use the field of new forms of energy design charger for mobile phone, relate in particular to a kind of structure of self-excited oscillation type solar mobile phone charging device.
Background technology
Use the people of mobile phone that such experience was arranged: battery of mobile phone has not had electricity suddenly when going out, because of charger not at one's side or can not find the place that can charge, influenced the normal use of mobile phone.In order to address this problem, this paper introduces a kind of solar mobile phone charging device, and it uses solar panel, gives charging mobile phone battery after circuit carries out dc voltage conversion, and can stop charging automatically after battery charge is finished.
Summary of the invention
The purpose of this invention is to provide a kind of structure of utilizing the self-excited oscillation type solar mobile phone charging device that solar panel charges.
Technical scheme of the present invention is as follows:
A kind of structure of self-excited oscillation type solar mobile phone charging device is provided, comprises at least one solar panel, it is characterized in that: described solar panel connects the two poles of the earth of single-ended flyback converter circuit; Described single-ended flyback converter circuit comprises that switching tube VT1, high frequency transformer T1, primary coil NP, secondary coil Ns, rectifier diode VD1, capacitor C 3 constitute; When switching tube VT1 conducting, the induced voltage of high frequency transformer T1 primary coil NP is 1 positive 2 negative, and secondary coil Ns is 5 positive 6 negative, and rectifier diode VD1 is in cut-off state, and at this moment high frequency transformer T1 is by primary coil Np storage power; When switching tube VT1 by the time, secondary coil Ns is 5 negative 6 just, the energy of storing among the high frequency transformer T1 is exported to load after by VD1 rectification and capacitor C 3 filtering; The output of described single-ended flyback converter circuit connects self-excited oscillation circuit, described self-excited oscillation circuit comprises that triode VT1, T1, R1, R3, C2 constitute, after described single-ended flyback converter circuit inserts solar panel, electric current makes the VT1 conducting through the base stage that starting resistance R1 flows to VT1.After the VT1 conducting, transformer Np just adds input direct voltage, its collector current Ic increases at the Np neutral line, feedback coil Nb produces 3 positive 4 negative induced voltages, make VT1 obtain base stage for just, launch very negative positive feedback voltage, this voltage injects base current through C2, R3 to VT1 further increases the collector current of VT1, positive feedback produces avalanche process, makes the VT1 saturation conduction; During the VT1 saturation conduction, T1 stores magnetic energy by primary coil Np; Export-restriction voltage is to the two poles of the earth of battery of mobile phone behind the described self-excited oscillation circuit connection pressure limiting circuit; Described pressure limiting circuit comprises that R5, R6, VD2, VT2 constitute, and are not overcharged with the protection battery of mobile phone.
Be example with the 3.6V battery of mobile phone below, its charging deboost is 4.2V.In the charging process of battery, cell voltage rises gradually, when charging voltage during greater than 4.2V, voltage stabilizing didoe VD2 begins conducting after R5, R6 dividing potential drop, make the VT2 conducting, the shunting action of VT2 has reduced the base current of VT1, thereby has reduced the collector current Ic of VT1, has reached the effect of restriction output voltage.At this moment circuit has stopped the large current charge to battery, with little electric current the voltage of battery is maintained 4.2V.
Have the charger of structure of the present invention, simple in structure, be easy to carry, not limited by external condition, have good market prospects.
Description of drawings
Fig. 1 is self-excited oscillation type solar mobile phone charging device schematic diagram;
Embodiment
Following 1 couple of the present invention does to describe further with reference to accompanying drawing, but is not limited to following examples:
Referring to accompanying drawing 1, a kind of structure of self-excited oscillation type solar mobile phone charging device comprises that four solar panels are composed in series the 12V charge power supply, and this 12V charge power supply connects the two poles of the earth of single-ended flyback converter circuit; Described single-ended flyback converter circuit comprises switching tube VT1, high frequency transformer T1, primary coil NP, secondary coil Ns, rectifier diode VD1, capacitor C 3; When switching tube VT1 conducting, the induced voltage of high frequency transformer T1 primary coil NP is 1 positive 2 negative, and secondary coil Ns is 5 positive 6 negative, and rectifier diode VD1 is in cut-off state, and at this moment high frequency transformer T1 is by primary coil Np storage power; When switching tube VT1 by the time, secondary coil Ns is 5 negative 6 just, the energy of storing among the high frequency transformer T1 is exported to load after by VD1 rectification and capacitor C 3 filtering; The output of described single-ended flyback converter circuit connects self-excited oscillation circuit, described self-excited oscillation circuit comprises triode VT1, T1, R1, R3, C2, after described single-ended flyback converter circuit inserts solar panel, electric current makes the VT1 conducting through the base stage that starting resistance R1 flows to VT1; After the VT1 conducting, transformer Np just adds input direct voltage, its collector current Ic increases at the Np neutral line, feedback coil Nb produces 3 positive 4 negative induced voltages, make VT1 obtain base stage for just, launch very negative positive feedback voltage, this voltage injects base current through C2, R3 to VT1 further increases the collector current of VT1, positive feedback produces avalanche process, makes the VT1 saturation conduction; During the VT1 saturation conduction, T1 stores magnetic energy by primary coil Np; Described self-excited oscillation circuit connects export-restriction voltage behind the pressure limiting circuit and obtains 3.6 volts voltage to the two poles of the earth of battery of mobile phone; Described pressure limiting circuit comprises R5, R6, VD2, VT2, is not overcharged with the protection battery of mobile phone.
Further referring to accompanying drawing 1, select suitable components and parts according to circuit diagram, wherein VT1 requires Icm＞0.5A, and hEF is 50-100, available 2SC2500,2SC1008 etc., and VD1 is the voltage stabilizing didoe of 3V for the voltage stabilizing value.{。##.##1},
High frequency transformer T1 adopts the FERRITE CORE of E16, and around 26 circles, around 8 circles, Ns uses φ 0.41 enamelled wire around 15 circles to Nb to Np with φ 0.21 enamelled wire with φ 0.21 enamelled wire; To note the initiating terminal of each coil during coiling, in order to avoid not starting of oscillation of circuit or output voltage are undesired; The plastic film that pad one layer thickness is about 0.03mm between two magnetic cores during assembling is made the magnetic core air gap.
Solar panel uses 4 areas to be the silicon solar cell plate of 6cm * 6cm, and its unloaded output voltage is 4V, and output voltage is 3V when operating current is 40mA.Owing to the operating efficiency of DC converter along with input voltage increase, therefore use 4 solar panels series connection backs, at this moment the input voltage of circuit is 12V.After the installation, connect solar panel, and place it under the sunlight, circuit output voltage is about 4.2V when unloaded, can suitably reduce the resistance of R5 when unloaded output voltage is higher than 4.2V, otherwise increases the resistance of R5.The circuit working electric current is relevant with the power of sunlight, just often is about 40mA, and at this moment charging current is about 85mA
Above shown detailed embodiment of the present invention, apparent, those skilled in the art can carry out the part modifications and changes under prerequisite of the present invention; The content of mentioning in description above and the accompanying drawing is the illustration of property as an illustration only, is not to be limitation of the present invention; Have the structure of the self-excited oscillation type solar mobile phone charging device of technical characterictic described herein, all fall into this patent protection range.
Claims (1)
1. the structure of a self-excited oscillation type solar mobile phone charging device comprises at least one solar panel, it is characterized in that: described solar panel connects the two poles of the earth of single-ended flyback converter circuit; Described single-ended flyback converter circuit comprises switching tube VT1, high frequency transformer T1, primary coil NP, secondary coil Ns, rectifier diode VD1, capacitor C 3; When switching tube VT1 conducting, the induced voltage of high frequency transformer T1 primary coil NP is 1 positive 2 negative, and secondary coil Ns is 5 positive 6 negative, and rectifier diode VD1 is in cut-off state, and at this moment high frequency transformer T1 is by primary coil Np storage power; When switching tube VT1 by the time, secondary coil Ns is 5 negative 6 just, the energy of storing among the high frequency transformer T1 is exported to load after by VD1 rectification and capacitor C 3 filtering; The output of described single-ended flyback converter circuit connects self-excited oscillation circuit, described self-excited oscillation circuit comprises triode VT1, T1, R1, R3, C2, after described single-ended flyback converter circuit inserts solar panel, electric current makes the VT1 conducting through the base stage that starting resistance R1 flows to VT1; After the VT1 conducting, transformer Np just adds input direct voltage, its collector current Ic increases at the Np neutral line, feedback coil Nb produces 3 positive 4 negative induced voltages, make VT1 obtain base stage for just, launch very negative positive feedback voltage, this voltage injects base current through C2, R3 to VT1 further increases the collector current of VT1, positive feedback produces avalanche process, makes the VT1 saturation conduction; During the VT1 saturation conduction, T1 stores magnetic energy by primary coil Np; Export-restriction voltage is to the two poles of the earth of battery of mobile phone behind the described self-excited oscillation circuit connection pressure limiting circuit; Described pressure limiting circuit comprises R5, R6, VD2, VT2, is not overcharged with the protection battery of mobile phone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320124885 CN203166577U (en) | 2013-03-19 | 2013-03-19 | Self-excited oscillation type solar mobile-phone charger structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320124885 CN203166577U (en) | 2013-03-19 | 2013-03-19 | Self-excited oscillation type solar mobile-phone charger structure |
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| Publication Number | Publication Date |
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| CN203166577U true CN203166577U (en) | 2013-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320124885 Expired - Fee Related CN203166577U (en) | 2013-03-19 | 2013-03-19 | Self-excited oscillation type solar mobile-phone charger structure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104348231A (en) * | 2014-11-05 | 2015-02-11 | 王志 | Mobile phone lithium battery emergency charger |
| CN105978354A (en) * | 2016-06-29 | 2016-09-28 | 四川莱源科技有限公司 | Power-amplifier heat dissipation plate and feed network structure integrated structure |
| CN105978029A (en) * | 2016-06-29 | 2016-09-28 | 四川莱源科技有限公司 | Feed network system |
| CN107046418A (en) * | 2017-04-18 | 2017-08-15 | 刘胜泉 | A kind of single live wire power getting circuit |
-
2013
- 2013-03-19 CN CN 201320124885 patent/CN203166577U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104348231A (en) * | 2014-11-05 | 2015-02-11 | 王志 | Mobile phone lithium battery emergency charger |
| CN105978354A (en) * | 2016-06-29 | 2016-09-28 | 四川莱源科技有限公司 | Power-amplifier heat dissipation plate and feed network structure integrated structure |
| CN105978029A (en) * | 2016-06-29 | 2016-09-28 | 四川莱源科技有限公司 | Feed network system |
| CN107046418A (en) * | 2017-04-18 | 2017-08-15 | 刘胜泉 | A kind of single live wire power getting circuit |
| CN107046418B (en) * | 2017-04-18 | 2020-07-14 | 刘胜泉 | Single live wire power-taking circuit |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130828 Termination date: 20190319 |
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| CF01 | Termination of patent right due to non-payment of annual fee |