CN109149748B - Portable solar charger and charging method - Google Patents
Portable solar charger and charging method Download PDFInfo
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- CN109149748B CN109149748B CN201811121785.2A CN201811121785A CN109149748B CN 109149748 B CN109149748 B CN 109149748B CN 201811121785 A CN201811121785 A CN 201811121785A CN 109149748 B CN109149748 B CN 109149748B
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- 238000007600 charging Methods 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000006243 chemical reaction Methods 0.000 claims abstract description 15
- 239000004677 Nylon Substances 0.000 claims description 14
- 239000004744 fabric Substances 0.000 claims description 14
- 229920001778 nylon Polymers 0.000 claims description 14
- 238000005070 sampling Methods 0.000 claims description 11
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 10
- 229910052782 aluminium Inorganic materials 0.000 claims description 10
- 238000010280 constant potential charging Methods 0.000 claims description 6
- 239000004411 aluminium Substances 0.000 claims description 4
- 238000010277 constant-current charging Methods 0.000 claims description 3
- 230000006641 stabilisation Effects 0.000 claims description 3
- 238000011105 stabilization Methods 0.000 claims description 3
- 230000007306 turnover Effects 0.000 abstract description 8
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000004806 packaging method and process Methods 0.000 abstract 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 6
- 229910052744 lithium Inorganic materials 0.000 description 6
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 239000000700 radioactive tracer Substances 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S10/00—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power
- H02S10/40—Mobile PV generator systems
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S20/00—Supporting structures for PV modules
- H02S20/30—Supporting structures being movable or adjustable, e.g. for angle adjustment
- H02S20/32—Supporting structures being movable or adjustable, e.g. for angle adjustment specially adapted for solar tracking
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S30/00—Structural details of PV modules other than those related to light conversion
- H02S30/20—Collapsible or foldable PV modules
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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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a portable solar charging bank, which comprises an angle base and a panel box arranged on the angle base, wherein a light ray tracking device is arranged in the middle of the inside of the joint of the angle base and the panel box, the panel box comprises a main panel, two sides of the main panel are respectively provided with a uncovered box body, one side of each of the two uncovered box bodies is provided with a turnover panel, the top and the bottom of each turnover panel are respectively provided with an inward folding guide groove, the inner side of each turnover panel is connected with a solar folding plate, the side surface of the uncovered box body opposite to the turnover panels is provided with a locking buckle, the top of the uncovered box body is provided with a half-open sliding groove, and an interface seat is arranged in each half-open sliding groove, so that the whole charging bank is of a plate-shaped structure, the packaging and the carrying are convenient, the receiving area and the receiving angle of the solar folding plates are enlarged, the light ray within a limited angle is actively tracked by the light ray tracking device, the fixed receiving area of the traditional solar panel is avoided, and the duration time for stably converting current in the solar conversion process is prolonged.
Description
Technical Field
The invention relates to the field of solar charging banks, in particular to a portable solar charging bank and a charging method.
Background
The charger is also called as a mobile power supply, an external battery, a backup battery, a digital charging partner, an external battery and a mobile power supply, the concept is developed along with the popularization and the rapid growth of digital products, and the definition is as follows: the portable power supply is convenient to carry, functions of digital products are increasingly diversified, the portable power supply is used more frequently, association with daily life of people is more and more close, the portable power supply is an optimal scheme for solving the problem, the portable power supply can be carried with one person to charge various digital products anytime and anywhere, and solar functions of a plurality of charger baby products are expanded along with development of solar technology;
for example, a technical solution provided by a portable charger baby with application number cn201510450500.X includes a housing, a solar panel, a PCB and a lithium battery, where the housing is a cylindrical plastic housing, a detachable clip is provided below the housing, the solar panel is provided above the housing, the PCB is provided on the left side inside the housing, and the lithium battery is provided on the right side inside the housing, so that solar energy conversion is performed by using the solar panel, and the portable solar charger baby can store solar energy and supply charging equipment, and also provides practical functions of fixing charging equipment, emergency lighting, receiving power supply and the like, but the area and receiving surface of the solar panel are affected by the fixing structure of the portable charger baby, and therefore, there is no large solar receiving area and fixed-angle solar intensity, so that in the process of electric energy conversion, the electric energy conversion is unstable due to the change of the angle of the sun, the overall structure is thick, and certain problems exist in portability;
in practical application, the existing power bank has the following problems:
(1) The structure of the charger is relatively fixed, so that the integrity of the charger is emphasized, and meanwhile, the installation mode of the solar cell panel on the charger is adopted, so that the charger is longer in charging time and weaker in power conversion function, the lithium battery can be charged only under the sun illumination of the cavity, and the solar cell panel with a fixed structure cannot track the illumination intensity;
(2) Meanwhile, in the charging process, the output voltage of the solar cell panel is in a dynamic change state for a long time, so that the lithium battery is inconvenient to charge, the service life of the lithium battery is easy to reduce, and the lithium battery needs to be charged to a certain electric quantity to realize the electric power output of the load.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a portable solar charger and a charging method, which can effectively solve the problems in the background art.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the utility model provides a portable solar charging is precious, includes the angle base and installs the panel box on the angle base, be provided with ray tracer in the middle of angle base and the inside of panel box junction, the panel box includes main cell panel, main cell panel's two sides all is provided with uncovered box body, two one side of uncovered box body is provided with the turn-over panel, the top and the bottom of turn-over panel all are provided with the infolding guide slot, the turn-over panel inboard is connected with the solar energy folded sheet, is provided with the locking for the side of the uncovered box body of turn-over panel and detains, the top of uncovered box body is provided with half-open sliding tray, install the interface seat in the half-open sliding tray.
Further, the angle base includes vice battery case, the corner seat is installed through the angle device to vice battery case, the both sides face bottom of corner seat is provided with the arc, just inside the arc stretched into vice battery case, ray tracer sets up in the middle of the top of corner seat, same side symmetry of vice battery case and corner seat is provided with two vertical grooves, be provided with the supporting leg in the vertical groove, and two the top of supporting leg articulates on the corner seat through same dabber, the both ends of dabber are all through the straight-teeth gear meshing on the angle device of opposite side.
Further, ray tracing device includes the micro motor, the output shaft of micro motor is connected with the planet wheel, be provided with the axostylus axostyle on the both sides wall of planet wheel, just inside the panel box was stretched into to the one end of axostylus axostyle, be provided with the hemisphere hinge on the planet wheel, the hemisphere hinge embedding is in the panel box bottom inner wall.
Further, the solar energy folded sheet includes the nylon cloth frame that a plurality of connects gradually, be provided with solar cell panel in the middle of the nylon cloth frame, equidistant array has the heat conduction aluminium strip between solar cell panel's the back and the nylon cloth frame, and is adjacent be provided with the thin slice hinge between the nylon cloth frame, just the heat conduction aluminium strip is connected on the thin slice hinge, the top and the bottom surface of thin slice hinge are provided with the dog-ear groove.
A charging method of a portable solar charger bank is characterized in that: the voltage of a solar cell panel is measured by 6 ADC channels in the main controller respectively, the output current, the voltage of a battery pack A, the voltage of a battery pack B and the load current are measured, the main controller collects voltage and current data once every 10ms, the data are stored in an EEPROM storage module, the BOOST circuit is used for performing voltage stabilization and conversion on electric power generated by the solar cell panel, the main controller calls a charging control algorithm chip through an electric signal instruction, the converted current is charged in the battery pack A and the battery pack B, the battery pack A and the battery pack B are synchronously precharged for 10min, then a charging circuit of the battery pack B is closed, the charging control algorithm chip circuit charges the battery pack A in a constant current charging stage and a constant voltage charging stage, when the battery pack A enters the constant voltage charging stage, the main controller opens a charging circuit of the battery pack B, and meanwhile, a connecting circuit between the battery pack B and the battery pack A is opened.
Further, when the solar cell panel works, the charging control algorithm chip obtains the output voltage V of the solar cell through a MAX5401 digital linear potentiometer set value in the charging control algorithm chip pv The main controller also comprises an initial current variable I for the sampling parameters of the solar panel dle Extracting historical minimum value V of output voltage of the solar cell panel from the EEPROM module low And historical maximum value V of output voltage high And the direction dir and the number R of times of disturbance change of an oscillator circuit to which the MAX5401 digital linear potentiometer is connected ev C。
Further, if I dle If not less than 1, the solar cell panel is judged to be in a stable state, and the MAX5401 digital linear potentiometer adjusts the voltage V S Equal to the initial set minimum voltage V min And said initial setting minimum voltage V min Slightly larger than the known historical minimum value V of the voltage of the solar cell low If I dle =0, the solar panel is in the maximum output power tracking stage, at this time V S ＝V max And said initial setting maximum voltage V max Slightly smaller than the historical maximum value V of the solar cell voltage high After that, the master controllerCalling dichotomy algorithm to calculate V low And V high Middle value V mid Setting the maximum voltage V of the primary MAX5401 digital linear potentiometer once the adjusted voltage range is obtained max ＝V min +V mid The main controller samples the voltage V of the solar battery pv And solar cell current I pv Calculating the output power of the current solar panel, and if the current power is greater than the last power P max[i] Record the variable R of the disturbance direction ev C is set to zero if the current power is less than P max[i] Changing the disturbance direction, adding 1, and then judging the voltage V of the solar cell at the moment by an algorithm pv Whether or not a solar cell simulator is in use, when R ev The value of the C variable is increased to a certain number of times, the system enters a stable state, the circulation execution is carried out, and the maximum power point P of the solar cell is continuously tracked max[i] 。
Furthermore, the main controller is electrically connected with a light sensor, a current threshold I (o) for directly supplying power is arranged in the MAX5401 digital linear potentiometer, when the light intensity collected by the light intensity sensor is larger than the current threshold I (o) corresponding to the output current I(s) generated by the solar cell panel, the BOOST circuit directly supplies power to the load, when the output current I(s) is smaller than the current threshold I (o), the main controller times that the output current I(s) is smaller than the current threshold I (o) through the clock circuit, when the timing time is within 5min, the load is supplied through the battery pack A, when the timing time is larger than 5min, the power supply of the battery pack A is stopped, and the load switch is turned off.
Furthermore, a voltage sampling circuit of the solar panel in the 6 paths of ADC channels is led to a proportional amplification circuit, the output of the voltage sampling circuit is connected to an AD pin of the main controller, and a sampling resistor of the voltage sampling circuit is formed by connecting two 10 milliohm high-precision resistors in parallel to form a 5 milliohm resistor.
Compared with the prior art, the invention has the beneficial effects that:
(1) The charger baby is composed of the angle base and the panel box, so that the whole charger baby is of a plate-shaped structure, is convenient to package and carry, is compact in whole structure, enlarges the receiving area and receiving angle of the solar folding plate, provides manual angle adjustment, and actively tracks light rays within a limited angle by the light ray tracking device, avoids the fixed receiving area of the traditional solar panel, and increases the duration time of stable conversion current in the solar conversion process;
(2) The battery pack A is arranged in the main battery panel, the battery pack B is arranged in the auxiliary battery box, and the battery pack A and the battery pack B are combined for use, so that the current generated by the solar battery panel can be efficiently converted and stored, and meanwhile, a load charging algorithm when the sunlight intensity and the sunlight are weak is optimized, so that the current output is more stable, the service lives of the battery pack A and the battery pack are prolonged, and the batteries connected to the load are protected.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of a corner seat structure according to the present invention;
FIG. 3 is a schematic view of the angle device mounting plate structure of the present invention;
the reference numbers in the figures:
1-angle base; 2-panel box; 3-ray tracing means; 4-solar folding plate; 5-half opening a sliding groove; 6-interface seat; 7-angle means;
101-a secondary battery compartment; 102-a corner seat; 103-an arc-shaped plate; 104-vertical slots; 105-a supporting leg; 106-a mandrel; 107-straight gears;
201-main panel; 202-uncovered boxes; 203-turning over the panel; 204-an invaginated guide slot; 205-locking buckle;
301-a micro motor; 302-a planet wheel; 303-shaft lever; 304-hemispherical hinge;
401-nylon cloth frame; 402-solar panels; 403-heat conducting aluminum strips; 404-thin sheet hinge; 405-dog-ear slot.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
as shown in fig. 1, 2 and 3, the invention provides a portable solar charger, which comprises an angle base 1 and a panel box 2 installed on the angle base 1, wherein a ray tracing device 3 is arranged in the middle of the inside of the joint of the angle base 1 and the panel box 2, the panel box 2 comprises a main panel 201, two sides of the main panel 201 are both provided with uncovered box bodies 202, one side of each of the uncovered box bodies 202 is provided with a turning panel 203, the top and the bottom of the turning panel 203 are both provided with an inward folding guide groove 204, the inner side of the turning panel 203 is connected with a solar folding plate 4, the side of the uncovered box body 202 opposite to the turning panel 203 is provided with a locking buckle 205, the top of the uncovered box body 202 is provided with a half-open sliding groove 5, and an interface seat 6 is installed in the half-open sliding groove 5;
according to the solar energy power generation device, the bending angle of the angle base 1 is changed through external force, the contact angle between the panel box 2 and the sun can be set in advance through the angle base 1, meanwhile, in the overall structure, the solar folding plates 4 are used as solar energy power conversion components and are placed in the uncovered box body 202 of the panel box 2 in a folding mode, so that the overall structure occupies a small space, and meanwhile, the solar folding plates 4 are arranged on two surfaces of the main panel 201, so that the electric energy conversion area of solar energy is larger;
the turning panel 203 and the solar folding panel 4 are attached together, the turning panel 203 is connected to the uncovered box body 202 through a common hinge with damping characteristics, so that the solar folding panel 4 can keep a certain angle when rotating around a shaft, and the inward-folding guide grooves 204 with U-shaped cross sections are arranged at the top and the bottom of the turning panel 203 and are used for accommodating two top ends of the folding edge of the solar folding panel 4.
The angle base 1 comprises an auxiliary battery box 101, a battery pack B is arranged in the auxiliary battery box 101, a battery pack A is arranged in a main battery board 201, the main battery board 201 and the auxiliary battery box 101 are arranged in a double-group battery mode, functional conversion of the main battery board 201 and the auxiliary battery box 101 during charging is achieved, and the battery pack B in the auxiliary battery box 101 performs balanced charging control and load power supply conversion on the battery pack A in the main battery board 201.
The auxiliary battery box 101 is provided with a corner seat 102 through an angle device 7, the bottoms of two side surfaces of the corner seat 102 are provided with arc-shaped plates 103, the arc-shaped plates 103 extend into the auxiliary battery box 101, and the ray tracing device 3 is arranged in the middle of the top of the corner seat 102;
furthermore, two vertical grooves 104 are symmetrically arranged on the same side surface of the auxiliary battery box 101 and the corner seat 102, a supporting foot frame 105 is arranged in each vertical groove 104, the tops of the two supporting foot frames 105 are hinged to the corner seat 102 through a same mandrel 106, and two ends of the mandrel 106 are meshed with the angle devices 8 on the opposite sides through straight gears 107.
In the present invention, the connection rotation between the corner seat 102 and the sub-battery box 101 is realized by the angle device 7, when the corner seat 102 and the sub-battery box 101 perform the angle rotation, the rotation of the angle device 7 will be transmitted to the spindle 106 by the engagement of the spur gear 107, the angle device 7 comprises two bevel gears which are matched with each other and are respectively connected to the corner seat 102 and the sub-battery box 101, the side surface of one bevel gear installed on the corner seat 102 is also provided with a tooth thread and is engaged with the spur gear 107, and the rotation speed ratio between the bevel gear and the spur gear 107 is set to be 1.
The ray tracking device 3 comprises a micro motor 301, an output shaft of the micro motor 301 is connected with a planet wheel 302, two side walls of the planet wheel 302 are provided with shaft rods 303, one end of each shaft rod 303 extends into the panel box 2, the planet wheel 302 is provided with a hemispherical hinge 304, and the hemispherical hinge 304 is embedded in the inner wall of the bottom of the panel box 2, wherein the planet wheel 302 is substantially equivalent to a reducer, the outer ring of the planet wheel rotates synchronously with the panel box 2 through the decelerating rotation of the planet wheel 302, and the top of the planet wheel 302 is connected with the panel box 2 through the hemispherical hinge 304, so that the panel box 2 can have more spaces for manual adjustment, the panel box 2 can provide planar angle adjustment as far as possible on the premise of the rotation angle of the panel box 2 between the corner seat 102 and the secondary battery 101, and the solar receiving angle of the solar folding plate 4 on the panel and the panel 2 is ensured.
Further, the solar folding plate 4 comprises a plurality of nylon cloth frames 401 which are sequentially connected, a solar cell panel 402 is arranged in the middle of each nylon cloth frame 401, heat-conducting aluminum strips 403 are arranged between the back of each solar cell panel 402 and the corresponding nylon cloth frame 401 at equal intervals, a sheet hinge 404 is arranged between every two adjacent nylon cloth frames 401, the heat-conducting aluminum strips 403 are connected to the sheet hinges 404, and corner folding grooves 405 are formed in the top and bottom surfaces of the sheet hinges 404;
the heat dissipation performance of the solar cell panel 402 is improved through the nylon cloth frame 401 and the heat conduction aluminum strips 403, the thickness of each heat conduction aluminum strip is 0.3-0.4 mm, the heat conduction aluminum strips are connected to the thin sheet hinges 404, and heat conduction and heat dissipation are improved.
Example 2:
a charging method of a portable solar charging treasure is characterized in that 6 ADC channels in a main controller respectively measure voltage, output current, voltage of a battery pack A, voltage of a battery pack B and load current of a solar cell panel, the main controller collects voltage and current data every 10ms and stores the data into an EEPROM storage module, a BOOST circuit is used for carrying out voltage stabilization conversion on electric power generated by the solar cell panel, the main controller calls a charging control algorithm chip through an electric signal instruction, the battery pack A and the battery pack B are charged for the converted current, the battery pack A and the battery pack B are synchronously precharged for 10min, then a charging circuit of the battery pack B is closed, the charging control algorithm chip circuit carries out constant current charging stage and constant voltage charging stage charging on the battery pack A, when the battery pack A enters the constant voltage charging stage, the main controller opens a charging circuit of the battery pack B, and simultaneously opens a connecting circuit between the battery pack B and the battery pack A.
Wherein the switch circuit between group battery A and group battery B uses IRFB4115MOS pipe for the reaction rate when the circuit of group battery A and group battery B carries out the switch again is fast, and the drive structure is little and simple, makes discharge rapidly.
When the solar cell panel works, the charging control algorithm chip obtains the output voltage V of the solar cell through the MAX5401 digital linear potentiometer set value in the device pv The main controller samples parameters of the solar panel and further comprises an initial current variation I dle Extracting historical minimum value V of output voltage of solar cell panel from EEPROM module low And historical maximum value V of output voltage high And the disturbance change direction dir and the frequency R of an oscillator circuit connected with the MAX5401 digital linear potentiometer ev C。
If I dle =1, the solar cell panel is judged to be in a stable state, and the MAX5401 digital linear potentiometer adjusts voltage V S Equal to the initial set minimum voltage V min And said initial setting minimum voltage V min Slightly larger than the known historical minimum value V of the voltage of the solar cell low If I dle =0, the solar panel is in the maximum output power tracking stage, at this time V S ＝V max And said initial setting maximum voltage V max Slightly smaller than the historical maximum value V of the solar cell voltage high Then the master controller calls a dichotomy algorithm to calculate V low And V high Middle value V mid Setting the maximum voltage V of the MAX5401 digital linear potentiometer once when the adjusted voltage range is obtained max ＝V min +V mid The main controller samples the voltage V of the solar cell pv And solar cell current I pv Calculating the output power of the current solar cell panel, and if the current power is greater than the last power P max[i] Record the variable R of the disturbance direction ev C is set to zero if the current power is less than P max[i] Changing the disturbance direction, adding 1, and then judging the voltage V of the solar cell at the moment by an algorithm pv Whether or not a solar cell simulator is in use, when R ev The value of the C variable is increased to a certain number of times, the system enters a stable state, the circulation execution is carried out, and the maximum power point P of the solar cell is continuously tracked max[i] 。
The main controller is also electrically connected with a light ray sensor, a current threshold I (o) for directly supplying power is arranged in the MAX5401 digital linear potentiometer, when the light intensity collected by the light ray intensity sensor is larger than the current threshold I (o) corresponding to the output current I(s) generated by the solar cell panel, the BOOST circuit directly supplies power to the load, when the output current I(s) is smaller than the current threshold I (o), the main controller times that the output current I(s) is smaller than the current threshold I (o) through a clock circuit, when the timing time is within 5min, the load is supplied with power through the battery pack A, when the timing time is larger than 5min, the power supply of the battery pack A is stopped, and the load switch is turned off;
the BOOST circuit can enable the load to input continuous current, and has relatively small electromagnetic interference on the power supply, so that the R of the oscillating circuit is not influenced ev C counting, and meanwhile, the emitter of the switch crystal is grounded, so that the BOOST driving circuit is simpler.
Furthermore, a voltage sampling circuit of the solar cell panel in the 6-path ADC channel is connected to the proportional amplifier circuit, the output of the voltage sampling circuit is connected to an AD pin of the main controller, a sampling resistor of the voltage sampling circuit is formed by connecting two 10-milliohm high-precision resistors in parallel to form a 5-milliohm resistor, and the output of the sampling circuit is connected to the AD pin of the single chip microcomputer.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (5)
1. The utility model provides a portable solar charging is precious which characterized in that: the solar foldable plate comprises an angle base (1) and a panel box (2) installed on the angle base (1), wherein a light ray tracking device (3) is arranged in the middle of the inside of the joint of the angle base (1) and the panel box (2), the panel box (2) comprises a main panel (201), uncovered box bodies (202) are arranged on two sides of the main panel (201), a turning panel (203) is arranged on one side of each of the uncovered box bodies (202), inward folding guide grooves (204) are arranged at the top and the bottom of the turning panel (203), a solar foldable plate (4) is connected to the inner side of the turning panel (203), a locking buckle (205) is arranged on the side face, opposite to the uncovered box body (202), of the turning panel (203), a half-open sliding groove (5) is arranged at the top of the uncovered box body (202), and an interface seat (6) is installed in the half-open sliding groove (5);
ray tracing device (3) include micro motor (301), the output shaft of micro motor (301) is connected with planet wheel (302), be provided with axostylus axostyle (303) on the both sides wall of planet wheel (302), just inside the one end of axostylus axostyle (303) stretches into panel box (2), be provided with hemispherical hinge (304) on planet wheel (302), hemispherical hinge (304) imbed in panel box (2) bottom inner wall.
2. The portable solar charger baby as claimed in claim 1, wherein: angle base (1) is including vice battery case (101), corner seat (102) are installed through angle device (7) to vice battery case (101), the both sides face bottom of corner seat (102) is provided with arc (103), just arc (103) stretch into inside vice battery case (101), ray tracing device (3) set up in the middle of the top of corner seat (102), the same side symmetry of vice battery case (101) and corner seat (102) is provided with two vertical grooves (104), be provided with support foot rest (105) in vertical groove (104), and two the top of support foot rest (105) articulates on corner seat (102) through same dabber (106), the both ends of dabber (106) all are through spur gear (107) meshing on angle device (7) of opposite side.
3. The portable solar charger baby as claimed in claim 1, wherein: solar energy folded sheet (4) include nylon cloth frame (401) that a plurality of connected gradually, be provided with solar cell panel (402) in the middle of nylon cloth frame (401), equidistant array has heat conduction aluminium strip (403) between the back of solar cell panel (402) and nylon cloth frame (401), and is adjacent be provided with thin slice hinge (404) between nylon cloth frame (401), just heat conduction aluminium strip (403) are connected on thin slice hinge (404), the top and the bottom surface of thin slice hinge (404) are provided with dog-ear groove (405).
4. A charging method of a portable solar charging bank, based on any one of claims 1 to 3, characterized in that: the method comprises the steps that 6 ADC channels in a main controller respectively measure the voltage of a solar cell panel, the output current, the voltage of a battery pack A, the voltage of a battery pack B and the load current, the main controller collects voltage and current data every 10ms and stores the data into an EEPROM storage module, a BOOST circuit is used for carrying out voltage stabilization and conversion on electric power generated by the solar cell panel, the main controller calls a charging control algorithm chip through an electric signal instruction, the battery pack A and the battery pack B are charged for the converted current, the battery pack A and the battery pack B are synchronously precharged for 10min, then a charging circuit of the battery pack B is closed, the charging control algorithm chip circuit carries out constant-current charging stage and constant-voltage charging stage charging on the battery pack A, when the battery pack A enters the constant-voltage charging stage, the main controller opens a charging circuit of the battery pack B, and meanwhile, a connecting circuit between the battery pack B and the battery pack A is opened.
5. The portable solar energy charger of claim 4The charging method of the power bank is characterized in that: when the solar cell panel works, the charging control algorithm chip obtains the output voltage of the solar cell through the set value of the internal MAX5401 digital linear potentiometer
The main controller also comprises initial current variation quantity to the sampling parameters of the solar panel
Extracting historical minimum value of output voltage of solar cell panel from EEPROM module
And historical maximum of output voltage
And direction of change of disturbance of an oscillator circuit to which the MAX5401 digital linear potentiometer is connected
Number of times of sum
。
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