CN104022546A - Field charging circuit for mobile equipment - Google Patents
Field charging circuit for mobile equipment Download PDFInfo
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- CN104022546A CN104022546A CN201410226933.2A CN201410226933A CN104022546A CN 104022546 A CN104022546 A CN 104022546A CN 201410226933 A CN201410226933 A CN 201410226933A CN 104022546 A CN104022546 A CN 104022546A
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- triode
- solar panel
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- coil
- resistance
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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
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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
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
Abstract
A field charging circuit for mobile equipment according to the invention comprises the components of: a solar cell panel, a first capacitor which is parallelly connected with the solar cell panel, a first triode, a second triode, a transformer and a charging electrode. The field charging circuit for the mobile equipment according to the invention can directly utilize sunlight with continuously variable brightness for charging the mobile equipment, thereby settling a field charging problem of the mobile equipment, prolonging working time of the mobile equipment, and improving outdoor operation efficiency.
Description
Technical field
The present invention relates to electronic circuit field, particularly, relate to a kind of mobile device field charging circuit.
Background technology
Electric power apparatus examination or workmen patrol and examine throughout the year in the wild, the electronic equipment carrying need to often charge, in most cases, field does not have operational AC socket to use, although carry reserce cell can extension device service time, but after all time expand limited, and carrying of reserce cell also increased personnel's heavy burden.
Solar cell is directly light energy conversion to be become to the device of electric energy by photoelectric effect or Photochemical effects.The thin-film type solar cell of photoelectric effect work of take is main flow, and the generating voltage of solar cell can reach 12V conventionally, but the output voltage of solar cell changes with sunlight illumination brightness, and output current is less, can not reach charging requirement.
Summary of the invention
For overcoming the existing mobile device field inconvenient technological deficiency of charging, the invention discloses a kind of mobile device field charging circuit.
Mobile device field charging circuit, comprise solar panel, first electric capacity in parallel with solar panel, also comprise the first triode, the second triode and transformer, the former limit of described transformer is comprised of primary coil and feedback coil, described the first transistor base is connected with the second transistor collector, and be connected to solar panel positive output level by the first resistance, the first transistor collector is connected to solar panel positive output level by the second resistance, described the first triode, the emitter of the second triode is all connected with solar panel negative output level,
The base stage of described the first triode is also connected with the starting point of feedback coil with the second electric capacity by the 3rd resistance of series connection, and the terminal of feedback coil connects solar panel negative output level; The starting point of described primary coil, terminal connect respectively solar panel positive output level and the first transistor collector;
Also comprise charge stage, described charge stage is comprised of the feedback resistance string and the 3rd electric capacity that are connected in parallel on transformer secondary output coil, between described secondary coil starting point and feedback resistance string, be also connected with rectifier diode, the first diode cathode connects secondary coil starting point, the feedback point of described feedback resistance string connects the base stage of the second triode by voltage stabilizing didoe, the positive pole of described voltage stabilizing didoe connects the base stage of the second triode.
Preferably, between described the second transistor base and solar panel negative pole, be also connected with adjustable resistance.
Concrete, described the first triode and/or the second triode are 2SC2500 or 2SC1008.
Mobile device of the present invention field charging circuit, the sunlight that can directly use brightness constantly to change charges to mobile device, utilize the amplification principle of mutual inductance and triode solar cell output voltage and electric current to be carried out to the uninterrupted charging of cycle amplification, solved the field charging problem of mobile device, extend the operating time of mobile device, improved outwork efficiency.
Accompanying drawing explanation
Fig. 1 is a kind of embodiment schematic diagram of the present invention;
Mark and corresponding parts title in accompanying drawing: VIN-solar panel, BAT-rechargeable battery, C1-the first electric capacity, C2-the second electric capacity, C3-the 3rd electric capacity, R1-the first resistance, R2-the second resistance, R3-the 3rd resistance, R4-adjustable resistance, R5-the first feedback resistance, R6-the second feedback resistance, VT1-the first triode, VT2-the second triode D1-rectifier diode, D2-voltage stabilizing didoe, NP1-primary coil, NP2-feedback coil, NS-secondary coil;
In figure, the upper end of each coil is starting point, and lower end is terminal.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is done to detailed description further, but embodiments of the present invention are not limited to this.
Mobile device field charging circuit, comprise solar panel, first electric capacity in parallel with solar panel, also comprise the first triode, the second triode and transformer, the former limit of described transformer is comprised of primary coil and feedback coil, described the first transistor base is connected with the second transistor collector, and be connected to solar panel positive output level by the first resistance, the first transistor collector is connected to solar panel positive output level by the second resistance, described the first triode, the emitter of the second triode is all connected with solar panel negative output level,
The base stage of described the first triode is also connected with the starting point of feedback coil with the second electric capacity by the 3rd resistance of series connection, and the terminal of feedback coil connects solar panel negative output level; The starting point of described primary coil, terminal connect respectively solar panel positive output level and the first transistor collector;
Also comprise charge stage, described charge stage is comprised of the feedback resistance string and the 3rd electric capacity that are connected in parallel on transformer secondary output coil, between described secondary coil starting point and feedback resistance string, be also connected with rectifier diode, the first diode cathode connects secondary coil starting point, the feedback point of described feedback resistance string connects the base stage of the second triode by voltage stabilizing didoe, the positive pole of described voltage stabilizing didoe connects the base stage of the second triode.
Solar panel VIN is that electric energy to first capacitor C 1 charging by electrooptical device by light energy conversion receiving solar energy, C1 voltage continues to rise, until be greater than the threshold voltage of the first triode VT1, after the first triode VT1 conducting, the collector current Ic flowing through in transformer NP1 increases at NP1 neutral line, make just lower negative induced voltage in feedback coil NP2 generation, make VT1 obtain base stage for just, launch very negative positive feedback voltage, this voltage is through C2, R3 place Zhi Luxiang VT1 injects base current further increases the collector current of VT1, positive feedback produces avalanche process, make VT1 saturation conduction.During VT1 saturation conduction, transformer stores magnetic energy by primary coil NP1.Meanwhile, induced voltage charges to C2, and along with increasing of C2 charging voltage, VT1 base potential is step-down gradually, when the base current of VT1 changes, can not meet it and continues when saturated, and VT1 exits saturation region and enters amplification region.VT1 enters after magnifying state, the maximum of its collector current before by magnifying state declines, negative lower positive induced voltage in feedback coil NP2 generation, VT1 base current is reduced, its collector current reduces thereupon,, there is avalanche process in positive feedback state reverse flip, VT1 ends rapidly again.After VT1 cut-off, the energy that transformer stores offers load from NP1, and the lower negative positive voltage that secondary coil NS produces, after rectifier diode VD1 rectifying and wave-filtering, obtains direct voltage to charging mobile phone battery on C3.When VT1 ends, solar panel VIN to C2 reverse charging, improves VT1 base potential through R1, R3 place branch road gradually, makes its conducting again, the state that reaches capacity that again overturns, and circuit repeats the charging process of vibrating like this.In charge stage, R5, R6 form feedback resistance string, and VD2, VT2 etc. form pressure limiting circuit, to protect battery not overcharged, for example, take 3.6V battery of mobile phone as example, and its charging restriction ceiling voltage is 4.2V.In the charging process of battery, cell voltage rises gradually, when charging voltage is greater than 4.2V, after R5, R6 dividing potential drop, voltage stabilizing didoe D2 starts conducting, makes the second triode VT2 conducting, and the shunting action of VT2 has reduced the base current of VT1, thereby reduced the collector current Ic of VT1, 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 to 4.2V.
A circuit parameters that is specifically applied to 3.6V charging device is R1=R2=10K, R3=470, R5=470, R6=2.2K, C1=C3=10u, C2=0.47u, when to 3.6V charging mobile phone battery, charging current is about 30-80 milliampere, relevant with sunlight strength, the Icm(maximum collector current of triode) should be greater than 0.5A, hEF(DC amplification factor) be 50-100, available 2SC2500,2SC1008 etc.
Preferably, between described the second transistor base and solar panel negative pole, be also connected with adjustable resistance R4.The effect of adjustable resistance R4 is to regulate feedback voltage to control node, and in the circuit shown in Fig. 1, R4 is actual to connect with R5 with after R6 parallel connection again, and regulating R4 is adjustable feedback voltage control point, charging voltage can be adjusted, thereby adapt to different charging devices.
As mentioned above, can realize preferably the present invention.
Claims (3)
1. mobile device field charging circuit, comprise solar panel, first electric capacity in parallel with solar panel, also comprise the first triode, the second triode and transformer, the former limit of described transformer is comprised of primary coil and feedback coil, described the first transistor base is connected with the second transistor collector, and be connected to solar panel positive output level by the first resistance, the first transistor collector is connected to solar panel positive output level by the second resistance, described the first triode, the emitter of the second triode is all connected with solar panel negative output level,
The base stage of described the first triode is also connected with the starting point of feedback coil with the second electric capacity by the 3rd resistance of series connection, and the terminal of feedback coil connects solar panel negative output level; The starting point of described primary coil, terminal connect respectively solar panel positive output level and the first transistor collector;
Also comprise charge stage, described charge stage is comprised of the feedback resistance string and the 3rd electric capacity that are connected in parallel on transformer secondary output coil, between described secondary coil starting point and feedback resistance string, be also connected with rectifier diode, the first diode cathode connects secondary coil starting point, the feedback point of described feedback resistance string connects the base stage of the second triode by voltage stabilizing didoe, the positive pole of described voltage stabilizing didoe connects the base stage of the second triode.
2. mobile device according to claim 1 field charging circuit, is characterized in that, between described the second transistor base and solar panel negative pole, is also connected with adjustable resistance.
3. mobile device according to claim 1 field charging circuit, is characterized in that, described the first triode and/or the second triode are 2SC2500 or 2SC1008.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410226933.2A CN104022546A (en) | 2014-05-27 | 2014-05-27 | Field charging circuit for mobile equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410226933.2A CN104022546A (en) | 2014-05-27 | 2014-05-27 | Field charging circuit for mobile equipment |
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| CN104022546A true CN104022546A (en) | 2014-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410226933.2A Pending CN104022546A (en) | 2014-05-27 | 2014-05-27 | Field charging circuit for mobile equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202260523U (en) * | 2011-09-20 | 2012-05-30 | 广东机电职业技术学院 | Portable charging device utilizing solar energy |
| CN203104057U (en) * | 2013-03-15 | 2013-07-31 | 赵宇 | Mobile power supply |
| CN203850891U (en) * | 2014-05-27 | 2014-09-24 | 国网四川省电力公司成都市新都供电分公司 | Mobile equipment field charging circuit |
-
2014
- 2014-05-27 CN CN201410226933.2A patent/CN104022546A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202260523U (en) * | 2011-09-20 | 2012-05-30 | 广东机电职业技术学院 | Portable charging device utilizing solar energy |
| CN203104057U (en) * | 2013-03-15 | 2013-07-31 | 赵宇 | Mobile power supply |
| CN203850891U (en) * | 2014-05-27 | 2014-09-24 | 国网四川省电力公司成都市新都供电分公司 | Mobile equipment field charging circuit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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Application publication date: 20140903 |