CN203774827U - Portable solar cell phone charger - Google Patents
Portable solar cell phone charger Download PDFInfo
- Publication number
- CN203774827U CN203774827U CN201420108368.5U CN201420108368U CN203774827U CN 203774827 U CN203774827 U CN 203774827U CN 201420108368 U CN201420108368 U CN 201420108368U CN 203774827 U CN203774827 U CN 203774827U
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- Prior art keywords
- pin
- solar cell
- charger
- chip
- resistance
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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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- 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
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a portable solar cell phone charger. The portable solar cell phone charger comprises a transparent protective cover, a solar cell, a charger circuit and an output interface. The output interface is a USB interface. The charger circuit includes a boost circuit and an under-voltage energy storage circuit. The boost circuit ensures that output voltage is fixed to be 5V within the normal light intensity scope to achieve voltage stabilized charging. The under-voltage energy storage circuit is used for cutting output of the charger if light intensity is too low and charging an electrolytic capacitor to achieve under-voltage energy storage. The portable solar cell phone charger which is simple in structure, low in cost, convenient in charging and long in service life can charge a cell phone through direct conversion of output of the solar cell via the charger circuit instead of employing a conventional scheme in which a lithium battery is a main part and a solar cell is an auxiliary part.
Description
Technical field
The utility model relates to technical field of solar, particularly a kind of portable type solar energy charger for mobile phone.
Background technology
Along with popularizing of smart mobile phone, particularly the smart mobile phone of large-screen becomes more and more popular, and people often run into mobile phone out of doors and do not have electric situation, and now can not find charger is mobile phone charging, can bring a lot of troubles and inconvenience.And solar energy is as a kind of clean energy resource of easy acquisition, can realize emergent charging for mobile phone.At present solar mobile phone charging device is on the market mostly built-in rechargeable lithium battary, solar mobile phone charging device is by the power storage of solar cell output in lithium battery, and then lithium battery is again for mobile phone charges.Solar cell plays is actually booster action, and only has solar cell in the situation of illumination abundance just can, to lithium cell charging, so just increase the complexity of circuit and the cost of charger.And lithium battery itself has the life-span, so situation that solar mobile phone charging device on the market there will be charge efficiency to decline in use for some time, need to change lithium battery could recover, and has increased so undoubtedly maintenance cost, has reduced the practicality of solar mobile phone charging device.
use novel content
The purpose of this utility model is a kind of portable solar mobile phone charging device proposing for the deficiencies in the prior art.
The purpose of this utility model is achieved in that
A kind of portable type solar energy charger for mobile phone, comprise transparent protective shield, solar cell, charger circuit and output interface, feature is: described solar cell and charger circuit are fixed in transparent protective shield, solar cell output is connected with charger circuit input, output interface is USB interface, wherein, charger circuit comprises booster circuit and under-voltage accumulator, and concrete connected mode is booster circuit: the positive pole of solar cell connects 6 pin of chip as input voltage; The minus earth of solar cell; Capacitor C 1 is connected in parallel on the two ends of solar cell as filter capacitor; Resistance R 1 is connected between 7 pin and 8 pin of chip; Resistance R 2 is connected between 6 pin of chip and 7 pin as sampling resistor; Inductance L 1 is connected between 1 pin and 7 pin of chip; 2 pin of chip and the direct ground connection of 4 pin; 3 pin of chip are by ceramic disc capacitor C2 ground connection; 5 pin of chip are by resistance R 3 ground connection; 5 pin of chip are received the negative pole of Schottky diode D1 by resistance R 4 simultaneously, and the positive pole of Schottky diode D1 is received 1 pin of chip; The positive pole of electrochemical capacitor C3 connects the negative pole of Schottky diode D1, the minus earth of capacitor C 3; Under-voltage accumulator: the positive pole of Schottky diode D2 connects the positive pole of electrochemical capacitor C3, the negative pole of Schottky diode D2 connects the positive pole of electrochemical capacitor C4 again, the minus earth of electrochemical capacitor C4; The positive pole of electrochemical capacitor C4 is series resistance R5 and resistance R 6 ground connection successively; The base stage of positive-negative-positive switch triode D3 is connected between resistance R 5 and resistance R 6, and the emitter of triode D3 connects the positive pole of capacitor C 4, and the collector electrode of triode D3 meets 1 pin VCC of USB interface; 4 pin GND ground connection of USB interface, 2 pin and 3 pin of USB interface are unsettled.
Described solar cell is monocrystaline silicon solar cell, output voltage 3.6 ~ 4V under 1 standard sunlight intensity, power 0.5 ~ 3W.
The chip that described booster circuit adopts is MC34063, and when input voltage is when 2.5V arrives 4.5V, the output voltage stabilization of booster circuit is at 5V.
Described under-voltage accumulator utilizes the switching characteristic of triode to realize the in the situation that of illumination condition deficiency, and when solar cell output voltage is too low, charger circuit disconnection output channel does not charge the phone, but charging realizes energy-storage function to electrochemical capacitor.
Compared with prior art, the beneficial effects of the utility model are:
(1) circuit structure of the present utility model is simple, with low cost, there is no built-in lithium battery, and useful life is longer.
(2) the utility model adopts booster circuit, guarantees that output voltage is fixed as 5V in certain scope, so output voltage do not change with light intensity, realizes voltage stabilizing and charges.
(3) the utility model adopts under-voltage accumulator, the in the situation that of illumination wretched insufficiency, when solar cell output voltage is too low while making the output voltage of booster circuit be less than 4.5V, cut off charger output then charging realizes under-voltage energy-storage function to electrochemical capacitor.
(4) output interface of the present utility model adopts conventional USB interface, and output 5V can be directly the electronic product charging that most of mobile phones and specified charging voltage are 5V.
Accompanying drawing explanation
Fig. 1 is the utility model outline drawing;
Fig. 2 is the utility model structured flowchart;
Fig. 3 is the utility model circuit theory diagrams.
Embodiment
Consult Fig. 1, the utility model comprises transparent protective shield 1, solar cell 2, charger circuit 3 and output interface 4.Solar cell 2 is fixedly mounted in transparent protective shield 1, and charger circuit 3 is fixedly mounted in transparent protective shield 1 and below solar cell 1, and charger circuit 3 adopts wrapped with insulation.
Consult Fig. 2, charger circuit of the present utility model comprises booster circuit and under-voltage accumulator.The output of solar cell is connected to the input of booster circuit, and the output of booster circuit is connected to the input of under-voltage accumulator, and it is mobile phone charging as the output of charger that the output of under-voltage accumulator is connected to USB interface.
Consult Fig. 3, the booster circuit B of the utility model charger circuit coordinates electrochemical capacitor C1, resistance R 1, resistance R 2, inductance L 1, resistance R 3, resistance R 4, ceramic disc capacitor C2, Schottky diode D1, electrochemical capacitor C3 to form by DC/DC converter MC34063.Through actual test, when input voltage is within the scope of 2.5V arrives 4.5V, the output voltage of booster circuit B can be stabilized in 5V, and solar cell output voltage is 3.6 ~ 4V under 1 standard sunlight intensity, so output voltage can be stabilized in 5V.
Consult Fig. 3, the under-voltage accumulator C of the utility model charger circuit is comprised of Schottky diode D2, electrochemical capacitor C4, resistance R 5, resistance R 6, triode D3.The effect of Schottky diode D2 is to prevent that electrochemical capacitor C4 is to electrochemical capacitor C3 reverse charging.Triode D3 is the key that realizes under-voltage accumulator C, when the output voltage of booster circuit B is less than 4.5V, is that the output voltage of solar cell A is less than 2.4V namely during illumination condition wretched insufficiency, the base voltage of triode D3 and emitter voltage U
bebe less than conducting voltage 0.7V, triode D3 is in cut-off state, thus USB interface in figure D place do not have output voltage, booster circuit B exports to electrochemical capacitor C4 charging, realizes under-voltage energy-storage function.
Consult Fig. 3, charger circuit of the present utility model when booster circuit B output voltage is 5V, by the dividing potential drop effect of resistance R 5 and R6, the base voltage of triode D3 and emitter voltage U
bebe greater than conducting voltage 0.7V, triode D3 is in conducting state, so there is normal output voltage 5V at USB interface D place.
Claims (3)
1. a portable type solar energy charger for mobile phone, comprise transparent protective shield, solar cell, charger circuit and output interface, it is characterized in that: described solar cell and charger circuit are fixed in transparent protective shield, solar cell output is connected with charger circuit input, output interface is USB interface, wherein, charger circuit comprises booster circuit and under-voltage accumulator, and concrete connected mode is booster circuit: the positive pole of solar cell connects 6 pin of chip as input voltage; The minus earth of solar cell; Capacitor C 1 is connected in parallel on the two ends of solar cell as filter capacitor; Resistance R 1 is connected between 7 pin and 8 pin of chip; Resistance R 2 is connected between 6 pin of chip and 7 pin as sampling resistor; Inductance L 1 is connected between 1 pin and 7 pin of chip; 2 pin of chip and the direct ground connection of 4 pin; 3 pin of chip are by ceramic disc capacitor C2 ground connection; 5 pin of chip are by resistance R 3 ground connection; 5 pin of chip are received the negative pole of Schottky diode D1 by resistance R 4 simultaneously, and the positive pole of Schottky diode D1 is received 1 pin of chip; The positive pole of electrochemical capacitor C3 connects the negative pole of Schottky diode D1, the minus earth of capacitor C 3; Under-voltage accumulator: the positive pole of Schottky diode D2 connects the positive pole of electrochemical capacitor C3, the negative pole of Schottky diode D2 connects the positive pole of electrochemical capacitor C4 again, the minus earth of electrochemical capacitor C4; The positive pole of electrochemical capacitor C4 is series resistance R5 and resistance R 6 ground connection successively; The base stage of positive-negative-positive switch triode D3 is connected between resistance R 5 and resistance R 6, and the emitter of triode D3 connects the positive pole of capacitor C 4, and the collector electrode of triode D3 meets 1 pin VCC of USB interface; 4 pin GND ground connection of USB interface, 2 pin and 3 pin of USB interface are unsettled.
2. portable type solar energy charger for mobile phone according to claim 1, is characterized in that: described solar cell is monocrystaline silicon solar cell output voltage 3.6 ~ 4V under 1 standard sunlight intensity, power 0.5 ~ 3W.
3. portable type solar energy charger for mobile phone according to claim 1, is characterized in that: the chip that described booster circuit adopts is MC34063, and when input voltage is when 2.5V arrives 4.5V, the output voltage stabilization of booster circuit is at 5V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420108368.5U CN203774827U (en) | 2014-03-11 | 2014-03-11 | Portable solar cell phone charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420108368.5U CN203774827U (en) | 2014-03-11 | 2014-03-11 | Portable solar cell phone charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203774827U true CN203774827U (en) | 2014-08-13 |
Family
ID=51291977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420108368.5U Expired - Fee Related CN203774827U (en) | 2014-03-11 | 2014-03-11 | Portable solar cell phone charger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203774827U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103855771A (en) * | 2014-03-11 | 2014-06-11 | 华东师范大学 | Portable solar phone charger |
| CN108683244A (en) * | 2018-05-07 | 2018-10-19 | 武汉致腾科技有限公司 | A kind of solar charging circuit |
-
2014
- 2014-03-11 CN CN201420108368.5U patent/CN203774827U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103855771A (en) * | 2014-03-11 | 2014-06-11 | 华东师范大学 | Portable solar phone charger |
| CN103855771B (en) * | 2014-03-11 | 2015-10-28 | 华东师范大学 | A kind of portable type solar energy charger for mobile phone |
| CN108683244A (en) * | 2018-05-07 | 2018-10-19 | 武汉致腾科技有限公司 | A kind of solar charging circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20140813 Termination date: 20150311 |
|
| EXPY | Termination of patent right or utility model |