CN103607021B - There is the portable type solar energy portable power source of MPPT function - Google Patents
There is the portable type solar energy portable power source of MPPT function Download PDFInfo
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- CN103607021B CN103607021B CN201310640572.1A CN201310640572A CN103607021B CN 103607021 B CN103607021 B CN 103607021B CN 201310640572 A CN201310640572 A CN 201310640572A CN 103607021 B CN103607021 B CN 103607021B
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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
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
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Abstract
The present invention relates to the portable type solar energy portable power source with MPPT function, in circuitry, MPPT charge management circuit is connected with solar panel, lithium battery protection circuit respectively, lithium battery protection circuit is also connected with lithium battery, booster circuit respectively, and booster circuit output connects USB interface through current foldback circuit; Housing comprises upper cover and lower cover, poly-lithium battery and master control PCB is accommodated with in the cavity that upper cover and lower cover are formed, cover rim is provided with the USB interface of standard, external output provides 5V/1A power supply, upper cover is also provided with the position, hole of position, electricity display button hole, four battery capacity indication LED and charging indicator light, under be stamped fixed screw position, in order to fixed cover and lower cover; Advantage is: circuitry utilizes maximal power tracing technology, improves solar panel to the charge efficiency of solar energy movable power supply; Prevent the operating current because of IC from causing portable power source electricity from losing phenomenon; Protective circuit solves the overcharging of solar energy movable power supply, cross and put, short circuit, cross flow problem.
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 is its electric energy supplement by solar panel, is preserved these energy changed by solar panel by built-in poly-lithium battery.This portable power source also provides the USB interface of standard, provides the external fan-out capability of 5V/1A.Can be charged for other portable digital produces by USB interface anywhere or anytime.
Background technology
Along with improving constantly of people's living standard, portable digital product in kind and quantitatively all more and more, as mobile phone, panel computer, digital camera, medical health equipment etc.These equipment all will use battery, but the internal battery of these equipment always can not meet long use because capacity is too little.Being again these equipment when going on business or travel does not have electricity, particularly when mobile phone is made a phone call and when digital camera is taken pictures through the crucial moment battery of being everlasting.And also often kind of equipment all can not be joined 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.The portable power source that capacity is large again, if electric energy supplement not in time, the electric energy preserved by lithium battery also can be finished.If utilize solar energy to continue a journey for portable power source, just can avoid because inner lithium ion battery does not have electricity and cause the problem that portable power source cannot use.If utilize solar panel to be converted to electric energy to collect solar energy, directly electric energy is input to the charging end of portable power source, can mate due to the input impedance of portable power source charging end and the output impedance of solar panel and cause the utilance of solar energy very low.The output impedance of solar panel changes along with the intensity of illumination and the change of output voltage again.
If so development solar energy movable power supply just must adopt a kind of novel method to improve the utilization ratio of solar panel, MPPT maximal power tracing technology that Here it is.Common portable power source all can have self-discharge phenomenon, do not give the charging of other digital products, the electricity 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 the unloaded hold facility improving 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, short circuit, the safeguard measure such as 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 the problem just becoming those skilled in the art and 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 with the portable type solar energy portable power source of MPPT function is provided, by the principle of maximal power tracing technology and the circuit structure of maximal power tracing, a kind of novel method is adopted to mate the impedance of 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 is realized 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 made up of lithium cell charging managing chip CN3065 and peripheral circuit thereof;
Described lithium battery protection circuit protects IC chip S8261 and peripheral circuit thereof to form by single-lithium-battery;
Described booster circuit is made up of the step-up DC/DC controller ME2109 with PWM/PFM handoff functionality;
Described current foldback circuit is made up of load switch MXT1610 and peripheral circuit thereof.
Circuitry is arranged in housing, housing comprises upper cover and lower cover, poly-lithium battery and master control PCB is accommodated with in the cavity that upper cover and lower cover are formed, cover rim is provided with the USB interface of standard, external output provides 5V/1A power supply, upper cover is also provided with the position, hole of position, electricity display button hole, four battery capacity indication LED 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, improves solar panel to the charge efficiency of solar energy movable power supply; Have employed the CMOS boosting DC/DC controller be made up of PWM/PFM control switching circuit and solve the large problem of boosting IC static working current, can preventing the operating current because of IC from causing portable power source electricity from losing phenomenon; With the addition of protective circuit to solve the overcharging of solar energy movable power supply, cross and put, short circuit, cross flow problem simultaneously.
The design of the present invention to solar energy movable power supply has good reference significance.
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, the present invention is described in detail in conjunction with the accompanying drawings and embodiments:
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 made up of lithium cell charging managing chip CN3065 and peripheral circuit thereof;
Lithium battery protection circuit protects IC chip S8261 and peripheral circuit thereof to form by single-lithium-battery;
Booster circuit is made up of the step-up DC/DC controller ME2109 with PWM/PFM handoff functionality;
Current foldback circuit is made up 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, automatically sending-end impedance can be adjusted according to the current output capability of input solar panel, thus automatically adjust charging current, the current output capability of input solar panel can be maximally utilised, improve charge efficiency.
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, is charged to lithium battery by port J2, and charge cutoff voltage is 4.2V; Resistance R4 be constant current charge electric current resistance is set, its computing formula is Ich=1800V/R4; 6th pin of lithium cell charging managing chip CN3065 and the 7th pin connect charging complete indicator light and respectively just at charging indicator light, wherein charging complete indicator light is red LED, just green LED at charging indicator light, these two LED are packaged together, common anode, is reserved with position, a hole in case top lid for these two common anode pole LED.
As shown in Figure 3; lithium battery protection circuit have employed single-lithium-battery protection IC chip S8261; 5th pin, the 6th pin of single-lithium-battery protection IC chip S8261 connect lithium battery through port J3; port J4 is that the protection of lithium battery exports; can be charged to lithium battery by port J4, lithium battery is also externally discharged by port J4 simultaneously.The inner integrated voltage comparator of chip S8261, when cell voltage is lower than minimum voltage, is controlled the grid of metal-oxide-semiconductor Q3 ME9926, thus metal-oxide-semiconductor is turned off by the 1st pin of chip S8261, isolated the ground that battery and lithium battery protection circuit export.Stop the permanent damages phenomenon caused because of lithium battery deep discharge, improve the life-span of portable power source.
As shown in Figure 4, booster circuit design have employed the CMOS boosting DC/DC controller ME2109 be made up of PWM/PFM control switching circuit, when load is lighter, operating state is switched to duty ratio be 15% PFM control circuit, can prevent because DC-DC boosts portable power source electricity that the operating current of IC causes from losing phenomenon.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 R9, R10 are used for the output voltage of Circuit tuning; output voltage is 5V; electric capacity C5, C6 and C7 are used for eliminating the output ripple voltage of Switching Power Supply and spike noise, make stable output.
As shown in Figure 5, in current foldback circuit, load switch MXT1610 the 4th pin, connectivity port J7 after 5th pin short circuit, the output of booster circuit is connected through port J7, load switch chip MXT1610 the 1st pin, 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 R11 be overcurrent protection allow maximum current resistance is set, when generation output overcurrent, during short circuit phenomenon, the metal-oxide-semiconductor of load switch chip MXT1610 inside can be closed automatically, thus be disconnected the load that booster circuit output is connected with USB output of the present invention, serve overcurrent and short-circuit protection effect.
According to the above description, the solution of the present invention can be realized in conjunction with art technology.
Claims (5)
1. have the portable type solar energy portable power source of 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 made up of lithium cell charging managing chip CN3065 and peripheral circuit thereof;
Described lithium battery protection circuit protects IC chip S8261 and peripheral circuit thereof to form by single-lithium-battery;
Described booster circuit is made up of the step-up DC/DC controller ME2109 with PWM/PFM handoff functionality;
Described current foldback circuit is made up of load switch MXT1610 and peripheral circuit thereof;
Circuitry is arranged in housing, housing comprises upper cover and lower cover, poly-lithium battery and master control PCB is accommodated with in the cavity that upper cover and lower cover are formed, cover rim is provided with the USB interface of standard, external output provides 5V/1A power supply, upper cover is also provided with the position, hole of position, electricity display button hole, four battery capacity indication LED and charging indicator light, under be stamped fixed screw position, in order to fixed cover and lower cover.
2. there is the portable type solar energy portable power source of MPPT function as claimed in claim 1, it is characterized in that, the concrete circuit of described MPPT charge management circuit connects, resistance R2 and resistance R3 connects, the 1st pin connecting resistance R2 of lithium cell charging managing chip U1, middle one end of resistance R3, the I mouth of another termination port J1 of resistance R2, one end of the other end connecting resistance R4 of resistance R3 and ground, the other end of resistance R4 is connected with the 2nd pin of lithium cell charging managing chip U1, the 3rd pin ground connection of lithium cell charging managing chip U1, 4th pin of lithium cell charging managing chip U1 connects one end of electric capacity C1 and the I mouth of port J1, the other end of electric capacity C1 connects the II mouth of port J1 respectively, 9th pin of lithium cell charging managing chip U1, the II mouth of port J2 and ground, 5th pin of lithium cell charging managing chip U1 connects the I mouth of port J2, 8th pin connects the I mouth of port J2, 6th pin, 7th pin connects the negative electrode of two light-emitting diodes of LED5 respectively, one end of the anode connecting resistance R6 of two light-emitting diodes of LED5, the I mouth of another termination port J1 of R6,
4th pin of lithium cell charging managing chip U1 connects solar panel through port J1, and port J2 connects the output of lithium battery protection circuit, is charged to lithium battery by port J2, and charge cutoff voltage is 4.2V; Resistance R4 be constant current charge electric current resistance is set, its computing formula is Ich=1800V/R4; 6th pin of lithium cell charging managing chip CN3065 and the 7th pin connect charging complete indicator light and respectively just at charging indicator light, wherein charging complete indicator light is red LED, just green LED at charging indicator light, these two LED are packaged together, common anode, is reserved with position, a hole in case top lid for these two common anode pole LED; The model of lithium cell charging managing chip U1 is CN3065.
3. there is the portable type solar energy portable power source of MPPT function as claimed in claim 1, it is characterized in that, the concrete circuit of described lithium battery protection circuit connects, 1st pin of single-lithium-battery protection IC chip U2, 3rd pin connects two G pins of the Q3 of field-effect transistor respectively, 2nd pin connects the II mouth of port J4 respectively by resistance R8, one of them D pin of the Q3 of field-effect transistor and ground, 6th pin connects one end of electric capacity C3 respectively, the II mouth of port J3, another D pin of field-effect transistor Q3, two S pins of field-effect transistor Q3 are connected, 5th pin of single-lithium-battery protection IC chip U2 connects the other end of electric capacity C3 respectively, one end of resistance R7, the other end of resistance R7 connects the I mouth of port J3 respectively, the I mouth of port J4,
5th pin, the 6th pin of single-lithium-battery protection IC chip U2 connect lithium battery through port J3, and port J4 is the output of lithium battery protection circuit, can be charged by port J4 to lithium battery, and lithium battery is also externally discharged by port J4 simultaneously; The model of single-lithium-battery protection IC chip U2 is S8261, and the model of the Q3 of integrated circuit is ME9926.
4. there is the portable type solar energy portable power source of MPPT function as claimed in claim 1, it is characterized in that, the concrete circuit of described booster circuit connects, diode D2 and diode D3 is in parallel, the I mouth of port J5 is successively by inductance L 1, diode D2 connects the I mouth of port J6, the II mouth of port J5 connects the II mouth of port J6, shunt capacitance C4 between the I mouth of port J5 and II mouth, shunt capacitance C5 between the I mouth of port J6 and II mouth, electric capacity C6, electric capacity C7, the 1st pin connecting resistance R9 respectively of step-up DC/DC controller U3, one end of resistance R10, the I mouth of another termination port J6 of resistance R9, the II mouth of another termination port J6 of resistance R10, 4th pin of step-up DC/DC controller U3 connects II mouth and the ground of port J5, 2nd pin is connected with the 3rd pin and connects the I mouth of port J5, two D pins of field-effect transistor Q4 connect the anode of diode D2, two S pins of field-effect transistor Q4 connect the II mouth of port J6, two G pins of field-effect transistor Q4 connect the 5th pin of step-up DC/DC controller U3,
2nd pin of step-up DC/DC controller U3, the 3rd pin connect the output of lithium battery protection circuit through port J5, port J6 is the output of booster circuit, resistance R9, R10 are used for the output voltage of Circuit tuning, output voltage is 5V, electric capacity C5, C6 and C7 are used for eliminating the output ripple voltage of Switching Power Supply and spike noise, make stable output; The model of step-up DC/DC controller U3 is ME2109, the Q4 of integrated circuit model be ME9926.
5. there is the portable type solar energy portable power source of MPPT function as claimed in claim 1, it is characterized in that, the concrete circuit of described current foldback circuit connects, 1 pin of load switch U4 meets one end and the USB interface J8 of electric capacity C8 respectively, the other end of electric capacity C8 is one end of connecting resistance R11, USB interface J8,2 pin of load switch U4, the II pin of port J7 and ground respectively, 4 pin of load switch U4,5 pin connect the I pin of port J7,3 pin of another termination load switch U4 of resistance R11;
Load switch U4 the 4th pin, connectivity port J7 after 5th pin short circuit, the output of booster circuit is connected through port J7, load switch chip U4 the 1st pin, 3rd pin connects USB interface J8, the load capacity of 5V/1A is externally provided, working load switch chip U4 is connected on the output of portable power source, wherein resistance R11 be overcurrent protection allow maximum current resistance is set, when generation output overcurrent, during short circuit phenomenon, the metal-oxide-semiconductor of load switch chip U4 inside can be closed automatically, thus be disconnected the load that booster circuit output is connected with the USB output of portable power source, play overcurrent and short-circuit protection effect, the model of load switch is MXT1610.
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| Application Number | Priority Date | Filing Date | Title |
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| 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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| 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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| CN103607021A CN103607021A (en) | 2014-02-26 |
| CN103607021B true CN103607021B (en) | 2015-10-07 |
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| 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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2013
- 2013-12-04 CN CN201310640572.1A patent/CN103607021B/en not_active Expired - Fee Related
Patent Citations (4)
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| US20120025752A1 (en) * | 2010-07-28 | 2012-02-02 | Triune Ip Llc | Battery charger |
| 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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