CN103607021A - Portable solar mobile power source with MPPT function - Google Patents
Portable solar mobile power source with MPPT function Download PDFInfo
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- CN103607021A CN103607021A CN201310640572.1A CN201310640572A CN103607021A CN 103607021 A CN103607021 A CN 103607021A CN 201310640572 A CN201310640572 A CN 201310640572A CN 103607021 A CN103607021 A CN 103607021A
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
Abstract
The invention relates to a portable solar mobile power source with an MPPT function. In circuitry, an MPPT charging management circuit is respectively connected with a solar cell panel and a lithium battery protection circuit, the lithium battery protection circuit is respectively connected with a lithium battery and a boosted circuit, and the output end of the boosted circuit is connected with a USB interface through an overcurrent protection circuit. A shell body comprises an upper cover and a lower cover, the polymer lithium battery and a master control PCB are contained in a cavity defined by the upper cover and the lower cover, the standard USB interface is formed in the edge of the upper cover, a 5V/1A power source is output and provided outwards, an electric quantity display key hole location, four electric quantity indicating LED lamps and a hole location of a charging indicating lamp are further arranged on the upper cover, and fixing screw locations are arranged on the lower cover and used for fixing the upper cover and the lower cover. The portable solar mobile power source has the advantages that an MPPT technology is utilized in the circuitry, the charging efficiency of the solar cell panel on the solar mobile power source is improved, the electric quantity self-loss phenomenon of the mobile power source caused by IC work currents is avoided, and the protection circuit solves the problems of the overcharging, the overdischarging, the short circuit and the overcurrent of the solar mobile power source.
Description
Technical field
The present invention relates to Portable power source, particularly a kind of portable type solar energy portable power source with MPPT function.
This portable power source can be its electric energy supplement by solar panel, preserves these energy of being changed by solar panel by built-in poly-lithium battery.This portable power source also provides the USB interface of standard, and the external fan-out capability of 5V/1A is provided.Can by USB interface, be that other portable digital produces charging anywhere or anytime.
Background technology
Along with improving constantly of people's living standard, portable digital product is in kind and quantitatively all get more and more, as mobile phone, panel computer, digital camera, medical health equipment etc.These equipment all will be used battery, but the internal battery of these equipment always can not meet long use because capacity is too little.When going on business or travel, being again these equipment has not had electricity through the crucial moment battery of being everlasting, particularly when mobile phone is made a phone call and when digital camera is being taken pictures.And also every kind of equipment all can not be joined to a reserve battery, cost is high nor convenient.Based on this, portable power source arises at the historic moment.
What existing portable power source product capacity can be done on the market is higher, and single-machine capacity can reach 2500mAh to 12000mAh, generally adopts polymer lithium ion battery cell, and capacity and the volume of common portable power source are directly proportional.Capacity is large portable power source again, if electric energy supplement not in time, the electric energy of being preserved by lithium battery also can be finished.If utilize solar energy to continue a journey for portable power source, just can avoid the problem that does not have electricity to cause portable power source to use due to inner lithium ion battery.If utilize solar panel to collect solar energy, be converted to electric energy, directly electric energy is input to the charging end of portable power source, can does not mate and cause the utilance of solar energy very low due to the input impedance of portable power source charging end and the output impedance of solar panel.The output impedance of solar panel is again along with the intensity of illumination and the variation of output voltage and change.
If so development solar energy movable power supply just must adopt a kind of utilization ratio of novel method raising solar panel, MPPT maximal power tracing technology that Here it is.Common portable power source all can have self-discharge phenomenon, do not give other digital product chargings, the electric weight of self also can reduce along with the time, this is because the boost static working current of IC of DC-DC causes, so just must adopt high performance booster power administrative skill in order to improve the unloaded hold facility of portable power source.
Except possessing high performance booster power administrative skill, the fail safe of portable power source is also the problem that development solar energy movable power supply should come into one's own.Portable power source must possess in inside: overcharge, cross put, the safeguard measure such as short circuit, overcurrent.
At present, domestic this type of technology that there is no is applied, and also has no bibliographical information, how to address this problem and just becomes the problem that those skilled in the art will study and solve.
Summary of the invention
Object of the present invention is exactly for overcoming the deficiencies in the prior art, a kind of technical scheme of portable type solar energy portable power source of the MPPT of having function is provided, by the principle of maximal power tracing technology and the circuit structure of maximal power tracing, adopt the impedance of a kind of novel method coupling solar panel and portable power source charging end, to improve solar panel to the charge efficiency of solar energy movable power supply, improve portability and the practicality of solar energy movable power supply.
The present invention realizes by such technical scheme: the portable type solar energy portable power source with MPPT function, it is characterized in that, circuitry comprises MPPT charge management circuit, lithium battery protection circuit, booster circuit, current foldback circuit and electric quantity display circuit;
MPPT charge management circuit is connected with solar panel, lithium battery protection circuit respectively, and lithium battery protection circuit is also connected with lithium battery, booster circuit respectively; Booster circuit output is connected with current foldback circuit, and current foldback circuit connects USB interface;
Described MPPT charge management circuit is comprised of lithium cell charging managing chip CN3065 and peripheral circuit thereof;
Described lithium battery protection circuit is comprised of single-lithium-battery protection IC chip S8261 and peripheral circuit thereof;
Described booster circuit is comprised of step-up DC/DC controller ME2109 with PWM/PFM handoff functionality;
Described current foldback circuit is comprised of load switch MXT1610 and peripheral circuit thereof.
Circuitry is arranged in housing, housing comprises upper cover and lower cover, in the cavity of upper cover and lower cover formation, poly-lithium battery and master control PCB circuit board have been taken in, cover rim is provided with the USB interface of standard, externally output provides 5V/1A power supply, upper cover is also provided with the position, hole of position, electric weight display button hole, four battery capacity indication LED lamps and charging indicator light, under be stamped fixed screw position, in order to fixed cover and lower cover.
Beneficial effect of the present invention: by design new hull contour structures, improve portability and the practicality of solar energy movable power supply; Circuitry utilizes maximal power tracing technology, has improved the charge efficiency of solar panel to solar energy movable power supply; Adopted the CMOS being formed by the PWM/PFM control switching circuit DC/DC controller that boosts to solve the large problem of IC static working current of boosting, can prevent from causing that because of the operating current of IC portable power source electric weight is from losing phenomenon; Added protective circuit has solved the overcharging of solar energy movable power supply, has crossed and put, short circuit, cross flow problem simultaneously.
The present invention has good reference significance to the design of solar energy movable power supply.
Accompanying drawing explanation
Fig. 1, circuit structure block diagram of the present invention;
Fig. 2, MPPT charge management circuit figure;
Fig. 3, lithium battery protection circuit figure;
Fig. 4, booster circuit figure;
Fig. 5, current foldback circuit figure;
Fig. 6, electric quantity display circuit figure.
Embodiment
For a more clear understanding of the present invention, describe in conjunction with the accompanying drawings and embodiments the present invention in detail:
Embodiment: as shown in Figures 1 to 6, have the portable type solar energy portable power source of MPPT function, circuitry comprises MPPT charge management circuit, lithium battery protection circuit, booster circuit, current foldback circuit and electric quantity display circuit;
MPPT charge management circuit is connected with solar panel, lithium battery protection circuit respectively, and lithium battery protection circuit is also connected with lithium battery, booster circuit respectively; Booster circuit output is connected with current foldback circuit, and current foldback circuit connects USB interface; Lithium battery connects electric quantity display circuit;
MPPT charge management circuit is comprised of lithium cell charging managing chip CN3065 and peripheral circuit thereof;
Lithium battery protection circuit is comprised of single-lithium-battery protection IC chip S8261 and peripheral circuit thereof;
Booster circuit is comprised of step-up DC/DC controller ME2109 with PWM/PFM handoff functionality;
Current foldback circuit is comprised of load switch MXT1610 and peripheral circuit thereof;
As shown in Figure 2, lithium cell charging managing chip CN3065 is the core of MPPT charge management circuit, and it adopts the mode of operation of linear power supply, and inside comprises power transistor.Inner analog to digital converter, can automatically adjust sending-end impedance according to the electric current fan-out capability of input solar panel, thereby automatically adjust charging current, can maximally utilise the electric current fan-out capability of input solar panel, improve charge efficiency.
The 4th pin of lithium cell charging managing chip CN3065 connects solar panel through port J1, and port J2 connects the output of lithium battery protection circuit, and by port, J2 charges to lithium battery, and charge cutoff voltage is 4.2V; Resistance R 4 is the resistance that arranges of constant current charge electric current, and its computing formula is Ich=1800V/R4; The 6th pin of lithium cell charging managing chip CN3065 and the 7th pin connect respectively the indicator light and just at charging indicator light of having charged, the indicator light that wherein charged is red LED, at charging indicator light, be just green LED, these two LED are packaged together, common anode, is reserved with position, a hole in case top lid for these two common anode utmost point LED.
As shown in Figure 3; lithium battery protection circuit has adopted single-lithium-battery protection IC chip S8261; the 5th pin, the 6th pin of single-lithium-battery protection IC chip S8261 connect lithium battery through port J3; port J4 is the protection output of lithium battery; by port J4, can charge to lithium battery, lithium battery is also externally to discharge by port J4 simultaneously.The inner integrated voltage comparator of chip S8261, when cell voltage is during lower than minimum voltage, controls the grid of metal-oxide-semiconductor Q3 ME9926, thereby metal-oxide-semiconductor is turn-offed by the 1st pin of chip S8261, isolated the ground that battery and lithium battery protection circuit are exported.Stopped the permanent damages phenomenon causing because of lithium battery deep discharge, the life-span of having improved portable power source.
As shown in Figure 4, booster circuit design has adopted the CMOS consisting of the PWM/PFM control switching circuit DC/DC controller ME2109 that boosts, when load is lighter, it is 15% PFM control circuit that operating state is switched to duty ratio, can prevent from boosting portable power source electric weight that the operating current of IC causes from losing phenomenon because of DC-DC.The 2nd pin, the 3rd pin of step-up DC/DC controller ME2109 connect li-ion cell protection output through port J4; port J6 is the output of booster circuit; resistance R 9, R10 are used for the output voltage of Circuit tuning; output voltage is 5V; capacitor C 5, C6 and C7 are used for eliminating output ripple voltage and the spike noise of Switching Power Supply, make stable output.
As shown in Figure 5, in current foldback circuit, load switch MXT1610 the 4th pin, connectivity port J7 after the 5th pin short circuit, the output that connects booster circuit through port J7, load switch chip MXT1610 the 1st pin, the 3rd pin connectivity port J8, port J8 is USB interface, the load capacity of 5V/1A is externally provided, working load switch chip MXT1610 is connected on output of the present invention, wherein resistance R 11 is the resistance that arranges of the maximum current that allows of overcurrent protection, when output overcurrent occurs, during short circuit phenomenon, the metal-oxide-semiconductor of load switch chip MXT1610 inside can be closed automatically, thereby disconnected the load that booster circuit output is connected with USB output of the present invention, overcurrent and short-circuit protection effect have been played.
According to the above description, in conjunction with art technology, can realize the solution of the present invention.
Claims (5)
1. the portable type solar energy portable power source with MPPT function, is characterized in that, circuitry comprises MPPT charge management circuit, lithium battery protection circuit, booster circuit, current foldback circuit and electric quantity display circuit;
MPPT charge management circuit is connected with solar panel, lithium battery protection circuit respectively, and lithium battery protection circuit is also connected with lithium battery, booster circuit respectively; Booster circuit output is connected with current foldback circuit, and current foldback circuit connects USB interface;
Described MPPT charge management circuit is comprised of lithium cell charging managing chip CN3065 and peripheral circuit thereof;
Described lithium battery protection circuit is comprised of single-lithium-battery protection IC chip S8261 and peripheral circuit thereof;
Described booster circuit is comprised of step-up DC/DC controller ME2109 with PWM/PFM handoff functionality;
Described current foldback circuit is comprised of load switch MXT1610 and peripheral circuit thereof;
Circuitry is arranged in housing, housing comprises upper cover and lower cover, in the cavity of upper cover and lower cover formation, poly-lithium battery and master control PCB circuit board have been taken in, cover rim is provided with the USB interface of standard, externally output provides 5V/1A power supply, upper cover is also provided with the position, hole of position, electric weight display button hole, four battery capacity indication LED lamps and charging indicator light, under be stamped fixed screw position, in order to fixed cover and lower cover.
2. the portable type solar energy portable power source with MPPT function as claimed in claim 1, it is characterized in that, the 4th pin of lithium cell charging managing chip CN3065 connects solar panel through port J1, port J2 connects the output of lithium battery protection circuit, by port, J2 charges to lithium battery, and charge cutoff voltage is 4.2V; Resistance R 4 is the resistance that arranges of constant current charge electric current, and its computing formula is Ich=1800V/R4; The 6th pin of lithium cell charging managing chip CN3065 and the 7th pin connect respectively the indicator light and just at charging indicator light of having charged, the indicator light that wherein charged is red LED, at charging indicator light, be just green LED, these two LED are packaged together, common anode, is reserved with position, a hole in case top lid for these two common anode utmost point LED.
3. the portable type solar energy portable power source with MPPT function as claimed in claim 1; it is characterized in that; the 5th pin, the 6th pin of single-lithium-battery protection IC chip S8261 connect lithium battery through port J3; port J4 is the protection output of lithium battery; by port J4, can charge to lithium battery, lithium battery is also externally to discharge by port J4 simultaneously.
4. the portable type solar energy portable power source with MPPT function as claimed in claim 1; it is characterized in that; in described booster circuit; the 2nd pin, the 3rd pin of step-up DC/DC controller ME2109 connect li-ion cell protection output through port J4; port J6 is the output of booster circuit, and resistance R 9, R10 are used for the output voltage of Circuit tuning, and output voltage is 5V; capacitor C 5, C6 and C7 are used for eliminating output ripple voltage and the spike noise of Switching Power Supply, make stable output.
5. the portable type solar energy portable power source with MPPT function as claimed in claim 1, it is characterized in that, in current foldback circuit, load switch MXT1610 the 4th pin, connectivity port J7 after the 5th pin short circuit, the output that connects booster circuit through port J7, load switch chip MXT1610 the 1st pin, the 3rd pin connectivity port J8, port J8 is USB interface, the load capacity of 5V/1A is externally provided, working load switch chip MXT1610 is connected on output of the present invention, wherein resistance R 11 is the resistance that arranges of the maximum current that allows of overcurrent protection, when output overcurrent occurs, during short circuit phenomenon, the metal-oxide-semiconductor of load switch chip MXT1610 inside can be closed automatically, thereby disconnected the load that booster circuit output is connected with USB output of the present invention, play overcurrent and short-circuit protection effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310640572.1A CN103607021B (en) | 2013-12-04 | 2013-12-04 | There is the portable type solar energy portable power source of MPPT function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310640572.1A CN103607021B (en) | 2013-12-04 | 2013-12-04 | There is the portable type solar energy portable power source of MPPT function |
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| Publication Number | Publication Date |
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| CN103607021A true CN103607021A (en) | 2014-02-26 |
| CN103607021B CN103607021B (en) | 2015-10-07 |
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| CN201310640572.1A Expired - Fee Related CN103607021B (en) | 2013-12-04 | 2013-12-04 | There is the portable type solar energy portable power source of MPPT function |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110797960A (en) * | 2019-11-05 | 2020-02-14 | 苏州市翌科斯拓机电科技有限公司 | Solar charging mobile power supply and solar charging method |
| CN112857318A (en) * | 2021-01-08 | 2021-05-28 | 重庆开谨科技有限公司 | Bridge inclination and dynamic parameter monitoring sensor and detection method |
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| CN203674746U (en) * | 2013-12-04 | 2014-06-25 | 天津中环创新科技有限公司 | Portable solar mobile power source with MPPT function |
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2013
- 2013-12-04 CN CN201310640572.1A patent/CN103607021B/en not_active Expired - Fee Related
Patent Citations (4)
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| CN102969783A (en) * | 2012-11-07 | 2013-03-13 | 北京交通大学 | Direct current uninterruptible power supply |
| CN103269105A (en) * | 2013-05-30 | 2013-08-28 | 东莞市可享光电科技有限公司 | Self-control multi-voltage output system of reserve power supply |
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Non-Patent Citations (1)
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| 孙鹏: "基于单片机控制的太阳能逆变电源研究", 《中国优秀硕士论文电子期刊网》, 31 December 2007 (2007-12-31) * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110797960A (en) * | 2019-11-05 | 2020-02-14 | 苏州市翌科斯拓机电科技有限公司 | Solar charging mobile power supply and solar charging method |
| CN110797960B (en) * | 2019-11-05 | 2022-05-03 | 苏州市翌科斯拓机电科技有限公司 | Solar charging mobile power supply and solar charging method |
| CN112857318A (en) * | 2021-01-08 | 2021-05-28 | 重庆开谨科技有限公司 | Bridge inclination and dynamic parameter monitoring sensor and detection method |
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| CN103607021B (en) | 2015-10-07 |
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Granted publication date: 20151007 Termination date: 20161204 |