CN208423914U

CN208423914U - A kind of solar mobile phone charging device circuit

Info

Publication number: CN208423914U
Application number: CN201821002768.2U
Authority: CN
Inventors: 穆天增; 李卓; 吴奉玲
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-06-27
Filing date: 2018-06-27
Publication date: 2019-01-22
Anticipated expiration: 2028-06-27

Abstract

The utility model discloses a kind of solar mobile phone charging device circuits, it includes a photovoltaic solar component, microcontroller, solar energy input control circuit, current detection circuit, charge protection and step-up discharge circuit, display module circuit and battery；The voltage output end of photovoltaic solar component is connect with the solar voltage incoming end of solar energy input control circuit；It is high using its generating efficiency of mono-crystalline silicon solar power generation plate and incident photon-to-electron conversion efficiency, it is to charge the battery again that mobile phone charges by battery by solar energy, as long as sunny be to ensure that the power supply supply for providing for mobile phone stablize abundance always；Being additionally provided with USB charging interface can also prevent from charging the phone because of battery power deficiency when sunlight is inadequate by extraneous power supply to charge the battery；The chip of use is all the chip of low power consumption and low cost, is reduced costs；The ceiling voltage and the data such as minimum voltage and charge volume of battery can be shown by OLED display screen.

Description

A kind of solar mobile phone charging device circuit

Technical field

The utility model relates to phone charger technical field more particularly to a kind of solar mobile phone charging device circuits.

Background technique

With the rapid development of mobile Internet, mobile phone has become essential thing in people's daily life, but It is simultaneously as present smart phone power consumption is all very fast, therefore the continuation of the journey of mobile phone electricity is that everybody compares attention Problem.

And it is the continuation of the journey of mobile phone electricity that existing current people, which are by charger baby, but the electricity of charger baby is also limited, If outside for a long time, existing this charger baby cannot be hand to some be engaged in outwork or travel enthusiasts Machine persistently provides power supply supply；Therefore it needs a kind of not only economic and environment-friendly but also the new skill of constant current source supply can be provided for mobile phone Art scheme solves deficiency existing for existing charger baby with this.

Utility model content

The purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of solar mobile phone charging device circuit, The defect that constant current source is supplied cannot be provided to long campaigns outwork personnel's mobile phone by solving existing charger baby.

The purpose of this utility model is achieved through the following technical solutions: a kind of solar mobile phone charging device circuit, It includes a photovoltaic solar component, microcontroller, solar energy input control circuit, current detection circuit, charge protection and liter Press discharge circuit, display module circuit and battery；Voltage output end and solar energy the input control electricity of photovoltaic solar component The solar voltage incoming end on road connects；

First supply port of microcontroller is connect with the first energization input of solar energy input control circuit, microcontroller Second supply port of device is connect with the second energization input VCCIN of solar energy input control circuit, microcontroller The port SWITCH is connect with the SWITCH incoming end of solar energy input control circuit, the first ADC voltage acquisition end of microcontroller Mouth is connect with the output end of the solar voltage incoming end of solar energy input control circuit；

The VOUT output end of solar energy input control circuit and the VOUT input terminal of current detection circuit connect；Microcontroller The 3rd ADC voltage acquisition port and current detection circuit voltage output end connect；The VVOUT output end of current detection circuit It is connect with the VVOUT input terminal of charge protection and step-up discharge circuit, the 2nd ADC voltage acquisition port of microcontroller and charging The input terminal connection of the connecting terminal of protection and step-up discharge circuit, charge protection and step-up discharge circuit by connecting terminal with Battery connection；Second supply port of microcontroller is connect with the supply port of display module circuit, the display of microcontroller Control port is connect with the display access interface of display module circuit.

Solar energy input control circuit includes a RSI/IN connecting terminal, a single-pole double-throw switch (SPDT) K1, the first partial pressure protection Circuit, a decompression chip, a triode Q1 and a relay H1；RSI/IN connecting terminal is with the single-pole double-throw switch (SPDT) K1's Moved end connection；The second non-moving end of single-pole double-throw switch (SPDT) K1 is connect with the 1st pin of decompression chip；First point of voltage protection circuit One end is connect with the second non-moving end of single-pole double-throw switch (SPDT) K1, other end ground connection；The collector and relay H1 of triode Q1 connects It connects；The 4th pin connect and ground of relay H1 and decompression chip；First supply port of microcontroller and the hair of triode Q1 Emitter-base bandgap grading connection, is in series with resistance R15 and resistance R16, the end SWITCH of microcontroller between the emitter and base stage of triode Q1 Mouth and the SWITCH access point between resistance R15 and resistance R16 connect, and the second supply port and the single-pole double throw of microcontroller are opened Close the VCCIN input terminal connection of the second non-moving end of K1, described first point of the first ADC voltage acquisition port access of microcontroller Voltage protection circuit realizes the acquisition of voltage.

First point of voltage protection circuit includes two concatenated resistance R4 and resistance R12；One end of resistance R4 and single-pole double throw The second non-moving end of switch K1 connects, one end ground connection of resistance R12；First ADC voltage acquisition port of microcontroller and resistance ADC0 access point connection between R4 and resistance R12.

Current detection circuit includes a current detecting chip；Current detecting chip is MAX471 chip, MAX471 chip packet 8 pins, the 1st pin and the 4th pin ground connection, VOUT output end and the MAX471 chip of solar energy input control circuit are included 2nd pin and the connection of the 3rd pin；5th pin of a MAX471 chip external resistance R23, R23 are connect with ground wire；Micro-control 3rd ADC voltage acquisition port of device processed is connect with the 8th pin of MAX471 chip；6th pin of MAX471 chip and the 7th The VVOUT output end of pin is connect with the VVOUT input terminal of charge protection and step-up discharge circuit.

Charge protection and step-up discharge circuit include a current-limiting resistance R1, diode S1, charge protector, step-up discharge Circuit and second point of voltage protection circuit；One end of current-limiting resistance R1 is connect with one end of the diode S1, current-limiting resistance R1's The other end is connect with connecting terminal B-1；The other end of diode S1 is connect with connecting terminal B+1, connecting terminal B+1 and terminals Sub- B-1 is connect with the positive and negative anodes of battery respectively, forms a charge circuit；6th pin of MAX471 chip and the 7th pin VVOUT output end connect with current-limiting resistance R1；Charge protector is in parallel with diode S1；The two of second point of voltage protection circuit End is connected between connecting terminal B+1 and connecting terminal B-1, the 2nd ADC voltage acquisition port of microcontroller connection the Two points of voltage protection circuits；One end of step-up discharge circuit is connect with connecting terminal B+1, the VCCOUT of step-up discharge circuit terminate into Battery of mobile phone feeder ear is charging mobile phone battery.

Second point of voltage protection circuit includes two concatenated resistance R3 and resistance R11；One end of resistance R3 and connecting terminal B + 1 connection, one end of resistance R11 is connect with connecting terminal B-1；2nd ADC voltage acquisition port of microcontroller and resistance R3 and ADC1 incoming end connection between resistance R11.

Step-up discharge circuit includes TH69 boost chip, inductance L1, diode S3 and capacitor C2；One end of inductance L1 and two One end of pole pipe S3 is connected, and the other end of inductance L1 is connect with connecting terminal B+1, and the other end of diode S3 is connected to VCCOUT End；One end of capacitor C2 is connected to the end VCCOUT, other end ground connection；1st pin of TH69 boost chip be connected to inductance L1 and Between diode S3, the 2nd pin ground connection.

It further include a USB charging module circuit；USB charging module circuit includes the input port USB and USB outlet； USB Input port includes 5 pins, the 5th pin ground connection, the VOUT output end company of the 1st pin and the solar energy input control circuit It connects；USB outlet includes 4 pins, and the 1st pin is grounded, and the 4th pin is connect with the end VCCOUT of step-up discharge circuit.

It further include a lighting module circuit；Lighting module circuit includes a single-pole double-throw switch (SPDT) K2, a linear voltage regulator, one Headlamp D3, a relay H2 and triode Q2；Linear voltage regulator includes 3 pins, and the 3rd pin is input port, the 2nd pin For output port, the 1st pin is ground pin port；Second supply port of microcontroller and the moved end of single-pole double-throw switch (SPDT) K2 Connection；The second non-moving end of single-pole double-throw switch (SPDT) K2 and the 3rd pin of linear voltage regulator connect, the 2nd pin of linear voltage regulator It is connect with the input terminal of headlamp D3；The output end of headlamp D3 and the 1st pin connect and ground of linear voltage regulator；

First supply port of microcontroller is connect with the emitting stage of triode Q2, the collector and relay of triode Q2 One end of H2 connects, the other end ground connection of relay H2；Resistance R24 and electricity are in series between the emitting stage and base stage of triode Q2 Hinder R25；LIGHT incoming end connection between the port LIGHT and resistance R24 and resistance R25 of microcontroller.

The beneficial effects of the utility model are: a kind of solar mobile phone charging device circuit, is generated electricity using mono-crystalline silicon solar Its generating efficiency of plate and incident photon-to-electron conversion efficiency are high, are filled again by battery for mobile phone to charge the battery by using solar energy Electricity, as long as sunny be to ensure that the power supply supply for providing for mobile phone stablize abundance always；It is additionally provided with USB charging Mouth can also be prevented by extraneous power supply to charge the battery because battery power deficiency cannot be to mobile phone when sunlight is inadequate Charging；Used chip is all the chip of low power consumption and low cost, is reduced the production cost；It can be shown by OLED display screen The number of the ceiling voltage and minimum voltage of battery and charge volume etc. data.

Detailed description of the invention

Fig. 1 is solar energy input control circuit figure；

Fig. 2 is display module circuit diagram；

Fig. 3 is microcontroller chip pin port map；

Fig. 4 is current detection circuit figure；

Fig. 5 is charge protection and step-up discharge circuit diagram；

Fig. 6 is USB charging module circuit diagram；

Fig. 7 is lighting module circuit diagram；

Fig. 8 is LED module circuit diagram；

Fig. 9 is key circuit figure；

Figure 10 is solar mobile phone charging device schematic diagram.

Specific embodiment

The technical solution of the utility model, but the protection scope of the utility model are described in further detail with reference to the accompanying drawing It is not limited to as described below.

As depicted in figs. 1 and 2, a kind of solar mobile phone charging device circuit, it includes a photovoltaic solar component, microcontroller Device, solar energy input control circuit, current detection circuit, charge protection and step-up discharge circuit, display module circuit and electric power storage Pond；The voltage output end of photovoltaic solar component is connect with the solar voltage incoming end of solar energy input control circuit；

Preferably, as shown in figure 3, microcontroller chip uses the single-chip microcontroller of model STM32C8T6, it can accomplish reality When monitor entire circuit, have the cracking speed of service and response speed, altogether include 40 pin ports, this time pipe Foot includes that the 19th pin, the 39th pin and the 40th pin are all grounded, and the 18th pin provides the voltage of 5V for the second supply port, 38th pin provides 3.3V voltage for the first supply port；1st connects display module circuit with the 2nd pin；12nd and 13 pins Connect two LED light；The pin of 11st, 14,15,16 and 17 connects key circuit；29th pin connects the port LIGHT, the 27th pipe Foot connects the port SWITCH, and the 28th pin is that ADC0 pin realizes that the first ADC voltage acquisition of acquisition, the 25th pin are ADC1 pin Realize that the 2nd ADC voltage acquisition of acquisition, the 26th pin are that ADC2 pin realizes the 3rd ADC voltage acquisition of acquisition.

Preferably, solar energy input control circuit includes a RSI/IN connecting terminal, a single-pole double-throw switch (SPDT) K1, first point Voltage protection circuit, a decompression chip, a triode Q1 and a relay H1；RSI/IN connecting terminal includes 3 pins；Hilted broadsword is double The 1st end of throw switch K1 is moved end, and the 2nd end is the first non-moving end, and the 3rd end is the second non-moving end；It is depressured chip and uses SPV1040 Chip includes 8 pins, is the chip of the high performance solar batteries charger of a embeddable MPPT, input voltage 0.3V is arrived 5.5V, has the fixed PWM frequency of 100KHz, and output voltage has pressure stabilizing, overcurrent and overtemperature prote；

Wherein the 2nd pin of RSI/IN connecting terminal is grounded, and the 1st pin is connect with the moved end of single-pole double-throw switch (SPDT) K1；Hilted broadsword The second non-moving end of commutator K1 is connect with the 1st pin of decompression chip；One end of first point of voltage protection circuit and hilted broadsword are double The second non-moving end of throw switch K1 connects, other end ground connection；The collector of triode Q1 is connect with relay H1；Relay H1 with It is depressured the 4th pin connect and ground of chip；The 38th pin of microcontroller STM32C8T6 and the emitter of triode Q1 connect It connects, resistance R15 and resistance R16, the 27th pipe of microcontroller STM32C8T6 is in series between the emitter and base stage of triode Q1 SWITCH access point connection between foot and resistance R15 and resistance R16, the 18th pin and hilted broadsword of microcontroller STM32C8T6 The VCCIN input terminal of the second non-moving end of commutator K1 connects, and the 28th pin ADC0 pin of microcontroller STM32C8T6 connects Enter first point of voltage protection circuit, realizes the acquisition of the first ADC voltage.

First point of voltage protection circuit includes two concatenated resistance R4 and resistance R12；One end of resistance R4 and single-pole double throw The second non-moving end of switch K1 connects, one end ground connection of resistance R12；The 28th pin ADC0 pin of microcontroller STM32C8T6 ADC0 access point between resistance R4 and resistance R12 is connect.

Preferably, it is required according to chip product specification circuit connection, decompression the 4th pin of chip SPV1040 ground connection, the A diode S2 is connected between 1 pin and the 8th pin, between the second non-moving end and the 1st pin of single-pole double-throw switch (SPDT) K1 It is in series with an inductance L2；There is a capacitor C3 with the first partial pressure protection circuit in parallel, one end of capacitor C3 connects single-pole double-throw switch (SPDT) The second non-moving end of K1, other end ground connection；Resistance R5 connects with adjustable resistance R13, and one end connection single-pole double throw of resistance R5 is opened Close the second non-moving end of K1, one end ground connection of adjustable resistance R13；Decompression chip SPV1040 the 2nd pin be connected to resistance R5 and Between adjustable resistance R13 series circuit, the 2nd pin is also connected with a capacitor C4, the other end ground connection of capacitor C4；It is depressured chip The end VOUT is connected after one resistance R7 of the 7th and the 8th pin series connection of SPV1040, the 6th pin is connected to the end VOUT, and the 5th pin connects It is grounded after meeting a capacitor C7, is parallel with an adjustable resistance R17 and capacitor C5 with capacitor C7, be in series with an electricity with adjustable resistance R17 One end ground connection of R10, adjustable resistance R17 and capacitor C5 are hindered, the other end of resistance R10 and the other end of capacitor C5 are connected to VOUT End.

Preferably, when the voltage of photovoltaic solar component is higher than battery both end voltage, first from RSI/IN terminals Whether son is come in, and lower section single-chip microcontroller connects relay by a triode, be connected with the electric current that this controls relay, when after Switch 1 above when electric current is connected can be connected to current lead-through on switch 3.ADC0 circuit can go acquisition solar panels to produce Raw voltage, since ADC0 can only acquire the voltage of 0-3.3V, but solar panel can generate 0-8V, so resistance can be used R4 and resistance R12 protects circuit to divide with this.It is depressured chip SPV1040, solar panels is irradiated in solar energy and light occurs The voltage that effect generates 0-8V is lied prostrate, voltage can surely be arrived 5V and exported by C5 filter capacitor from port VOUT by decompression chip, i.e., The port output of VOUT is exactly the output of solar panel, needs exist for illustrating again some solar panel when sunlight is excessively weak The voltage that 5V or more can not be generated cannot carry out charging because SPV1040 acts only as a decompression chip and can not be to charger Voltage pressure boosting, can only charge to charger with USB charging module circuit at this time.

Preferably, as shown in figure 4, current detection circuit includes a current detecting chip；Current detecting chip is MAX471 Chip, MAX471 chip include 8 pins, and the 1st pin and the 4th pin ground connection, the VOUT of solar energy input control circuit are defeated Outlet is connect with the 2nd pin of MAX471 chip and the 3rd pin；The external resistance R23 of 5th pin of MAX471 chip, R23 is connect with ground wire；3rd ADC voltage acquisition port of microcontroller is connect with the 8th pin of MAX471 chip； MAX471 6th pin of chip and the VVOUT output end of the 7th pin are connect with the VVOUT input terminal of charge protection and step-up discharge circuit.

Preferably, in the current detection circuit detected to solar charger charging to charging circuit, i.e., Fig. 4 is MAX471 is a current detecting chip when the voltage that photovoltaic solar component generates generates the electric current of 0-3A, can be in VVOUT Pin exports the linear voltage of a 0-3V, and the voltage by acquiring VVOUT pin can measure through pin 3 and draw The electric current of foot 6, so can also measure charging current.

Preferably, as shown in figure 5, charge protection and step-up discharge circuit include a current-limiting resistance R1, diode S1, charging Protect circuit, step-up discharge circuit and second point of voltage protection circuit；6th and the 7th pin of MAX471 chip is connected to current limliting electricity R1 is hindered, one end of current-limiting resistance R1 is connect with one end of the diode S1, the other end and connecting terminal B-1 of current-limiting resistance R1 Connection, is connected with a resistance R19 and in parallel with resistance R20 group of a LED D2 between current-limiting resistance R1 and connecting terminal B-1 At circuit；The other end of diode S1 is connect with connecting terminal B+1, connecting terminal B+1 and connecting terminal B-1 respectively with electric power storage The positive and negative anodes in pond connect, and form a charge circuit；Charge protector is in parallel with diode S1；Second point of voltage protection circuit Both ends are connected between connecting terminal B+1 and connecting terminal B-1, the 25th pin ADC1 pipe of microcontroller STM32C8T6 Foot connects second point of voltage protection circuit, realizes the acquisition of the 2nd ADC voltage；One end of step-up discharge circuit and connecting terminal B+1 Connection, the VCCOUT of step-up discharge circuit are terminated into battery of mobile phone feeder ear, are charging mobile phone battery.

Preferably, charge protector includes charging management chip DW01K, 8202S chip and some chip peripheries electricity Road；Electric current exports one one ohm on the circuit for being connected to cell charge protection and step-up discharge shown in fig. 5 part from VVOUT Current-limiting resistance R1, cross diode S1, electric current can give the battery of charger by the connecting terminal B+1 and B-1 of battery Charging.DW01K chip and 8202S chip are charge protection chips, and the range of battery charger voltage is 3.7V -4.2V, work as storage When cell voltage is more than 4.2V, DW01K thereby protects battery by control 8202S chip cutting off charging circuit and is not burned. Simultaneously when short-circuit conditions occurs in circuit, the two chips can also cut off charging circuit.So the major function of the two chips It is to control whether to charge, protects circuit battery, wherein DW01K core is that main control chip cuts off circuit by control 8202S.

Step-up discharge circuit includes TH69 boost chip, inductance L1, diode S3 and capacitor C2；One end of inductance L1 and two One end of pole pipe S3 is connected, and the other end of inductance L1 is connect with connecting terminal B+1, and the other end of diode S3 is connected to VCCOUT End；One end of capacitor C2 is connected to the end VCCOUT, other end ground connection；1st pin of TH69 boost chip be connected to inductance L1 and Between diode S3, the 2nd pin ground connection；It further include some peripheral circuits needed according to chip handbook.TH69 is a boosting Chip, voltage can be raised during charging the phone, and exactly be controlled by this chip, and TH69 chip passes through Concussion generates a wave by inductance L1, diode S3, then arrives capacitor and charges to C2 capacitor, when capacitor is electrically charged When, voltage can rise to 5V and export charging outward, so the voltage from VCCOUT output is exactly the voltage charged the phone.

Preferably, as shown in fig. 6, further including a USB charging module circuit；USB charging module circuit includes USB input Mouth and USB outlet；The input port USB includes 5 pins, the 5th pin ground connection, the 1st pin and the solar energy input control The VOUT output end of circuit connects；USB outlet includes 4 pins, the 1st pin ground connection, the 4th pin and step-up discharge electricity The end VCCOUT on road connects.In the case where there is no the sun at night or continuous cloudy day, can directly be filled by USB port Electricity, when carrying out USB port charging, otherwise to disconnect solar charging circuit can burn circuit.

Preferably, as shown in fig. 7, further including a lighting module circuit；Lighting module circuit includes a single-pole double-throw switch (SPDT) K2, a linear voltage regulator AMS1117, a headlamp D3, a relay H2 and triode Q2；Linear voltage regulator AMS1117 includes 3 A pin, the 3rd pin are input port, and the 2nd pin is output port, and the 1st pin is ground pin port；Microcontroller The 18th pin of STM32C8T6 is connect with the moved end of single-pole double-throw switch (SPDT) K2；The second non-moving end of single-pole double-throw switch (SPDT) K2 and line Property voltage-stablizer the connection of the 3rd port, the 2nd pin of linear voltage regulator AMS1117 connect with the input terminal of headlamp D3；Headlamp The output end of D3 and the 1st pin connect and ground of linear voltage regulator AMS1117；

The 33rd pin of microcontroller STM32C8T6 is connect with the emitting stage of triode Q2, the collector of triode Q2 with One end of relay H2 connects, the other end ground connection of relay H2；Resistance is in series between the emitting stage and base stage of triode Q2 R24 and resistance R25；LIGHT incoming end between the 29th pin and resistance R24 and resistance R25 of microcontroller STM32C8T6 connects It connects.

Preferably, for lighting module circuit using the headlamp of 3.3V, D3 LED illumination light bulb needs 3.3V voltage Power supply, so plus a 3.3V linear voltage regulator, the 5V that charging circuit is boosted to drop to 3.3V be lighting bulb D3 power, Because the power of D3 cannot be directly controlled greatly very much by single-chip microcontroller, so needing to control whether light bulb illuminates with relay.

Preferably, as shown in figure 8, LED module circuit is then to be connected with LED light by power supply by a resistance, It is attached again with the 12nd and the 13rd pin I/O port of microcontroller STM32C8T6, when the I/O port of microcontroller STM32C8T6 is When high level, LED light is extinguished, and when the IO of single-chip microcontroller is low level, LED light is bright.

Preferably, as shown in figure 9, key circuit includes that S1, S2, S3, S4 and S5 have 5 keys altogether, the one of each key End is connect with the pin I/O port of the 11st, 14,15,16 and 17 of microcontroller STM32C8T6 respectively, other end ground connection, when key quilt When pressing, I/O port is dragged down, and key is detected, and executes corresponding function.

Preferably, photovoltaic solar component uses mono-crystalline silicon solar power generation plate, is that current converting photons are imitated for electronics The highest a photovoltaic panel of rate, incident photon-to-electron conversion efficiency is between 15%-24%, and its service life is also wanted compared to other photovoltaic panels Longer, 15-25 can be used in general one piece of monocrystal solar panel；The capacitance of storage of battery can be according to demand Design different capacity.

Preferably, as shown in Figure 10, the application mainly passes through photovoltaic solar power generation plate generation voltage, passes through single-chip microcontroller control System charges to battery, and wherein charging management chip DW01K, TH69, current detecting chip MAX471 control charging Tubulation reason prevents chip or circuit because overcurrent or over-voltage from damaging；Load (mobile phone) power supply is given finally by battery； If at night or the cloudy day causes sunlight inadequate, when the power generation of photovoltaic solar power generation plate is limited, USB charging part can be passed through Exceptionally boundary's power supply is to charge the battery.

The above is only the preferred embodiment of the utility model, it should be understood that the utility model is not limited to herein Disclosed form, should not be regarded as an exclusion of other examples, and can be used for other combinations, modifications, and environments, and Can be in contemplated scope described herein, modifications can be made through the above teachings or related fields of technology or knowledge.And this field The modifications and changes that personnel are carried out do not depart from the spirit and scope of the utility model, then all should be in right appended by the utility model It is required that protection scope in.

Claims

1. a kind of solar mobile phone charging device circuit, it is characterised in that: it includes a photovoltaic solar component, microcontroller, too Positive energy input control circuit, current detection circuit, charge protection and step-up discharge circuit, display module circuit and battery；Institute The solar voltage incoming end of the voltage output end for the photovoltaic solar component stated and the solar energy input control circuit connects It connects；

First supply port of the microcontroller is connect with the first energization input of the solar energy input control circuit, Second supply port of the microcontroller is connect with the second energization input VCCIN of the solar energy input control circuit, The port SWITCH of the microcontroller is connect with the SWITCH incoming end of the solar energy input control circuit, the microcontroller The output end of the solar voltage incoming end of the first ADC voltage acquisition port and solar energy input control circuit of device connects It connects；

The VOUT output end of the solar energy input control circuit is connect with the VOUT input terminal of the current detection circuit；Institute 3rd ADC voltage acquisition port of the microcontroller stated is connect with the voltage output end of the current detection circuit；The electricity The VVOUT output end of current detection circuit is connect with the VVOUT input terminal of the charge protection and step-up discharge circuit, and described is micro- The input terminal of the connecting terminal of 2nd ADC voltage acquisition port of controller and the charge protection and step-up discharge circuit connects It connects, the charge protection and step-up discharge circuit are connect by connecting terminal with the battery；The microcontroller Second supply port is connect with the supply port of the display module circuit, the display control port of the microcontroller and institute State the display access interface connection of display module circuit.

2. a kind of solar mobile phone charging device circuit according to claim 1, it is characterised in that: the solar energy input Control circuit includes a RSI/IN connecting terminal, a single-pole double-throw switch (SPDT) K1, first point of voltage protection circuit, decompression a chip, one A triode Q1 and relay H1；The RSI/IN connecting terminal is connect with the moved end of the single-pole double-throw switch (SPDT) K1；It is described Single-pole double-throw switch (SPDT) K1 the second non-moving end with it is described decompression chip the 1st pin connect；The first partial pressure protection electricity The one end on road is connect with the second non-moving end of the single-pole double-throw switch (SPDT) K1, other end ground connection；The current collection of the triode Q1 Pole is connect with the relay H1；The 4th pin connect and ground of the relay H1 and the decompression chip；The micro-control First supply port of device processed is connect with the emitter of the triode Q1, between the emitter and base stage of the triode Q1 It is in series with resistance R15 and resistance R16, between the port SWITCH of the microcontroller and the resistance R15 and resistance R16 The connection of SWITCH access point, the second non-moving end of the second supply port of the microcontroller and the single-pole double-throw switch (SPDT) K1 VCCIN input terminal connection, the microcontroller the first ADC voltage acquisition port access it is described first partial pressure protection electricity The acquisition of voltage is realized on road.

3. a kind of solar mobile phone charging device circuit according to claim 1, it is characterised in that: the current detecting electricity Road includes a current detecting chip；The current detecting chip is MAX471 chip, and the MAX471 chip includes 8 pipes Foot, the 1st pin and the 4th pin ground connection, the VOUT output end of the solar energy input control circuit and the MAX471 chip The 2nd pin and the 3rd pin connection；5th pin of the MAX471 chip an external resistance R23, the R23 and ground wire connect It connects；3rd ADC voltage acquisition port of the microcontroller is connect with the 8th pin of the MAX471 chip；Described The VVOUT of 6th pin of MAX471 chip and the VVOUT output end of the 7th pin and the charge protection and step-up discharge circuit Input terminal connection.

4. a kind of solar mobile phone charging device circuit according to claim 3, it is characterised in that: the charge protection and Step-up discharge circuit includes a current-limiting resistance R1, diode S1, charge protector, step-up discharge circuit and the second partial pressure protection Circuit；One end of the current-limiting resistance R1 is connect with one end of the diode S1, the other end of the current-limiting resistance R1 with connect Line terminals B-1 connection；The other end of the diode S1 is connect with connecting terminal B+1, the connecting terminal B+1 and connecting terminal B-1 is connect with the positive and negative anodes of battery respectively, forms a charge circuit；6th pin of the MAX471 chip and the 7th pipe The VVOUT output end of foot is connect with the current-limiting resistance R1；The charge protector is in parallel with the diode S1；It is described The both ends of second point of voltage protection circuit be connected between connecting terminal B+1 and connecting terminal B-1, the microcontroller The 2nd ADC voltage acquisition port connect second point of voltage protection circuit；One end of the step-up discharge circuit and connecting terminal B + 1 connection, the VCCOUT of the step-up discharge circuit are terminated into battery of mobile phone feeder ear, are charging mobile phone battery.

5. a kind of solar mobile phone charging device circuit according to claim 4, it is characterised in that: further include USB charging Modular circuit；The USB charging module circuit includes the input port USB and USB outlet；The input port USB includes 5 A pin, the 5th pin ground connection, the 1st pin are connect with the VOUT output end of the solar energy input control circuit；The USB Delivery outlet includes 4 pins, and the 1st pin is grounded, and the 4th pin is connect with the end VCCOUT of the step-up discharge circuit.

6. a kind of solar mobile phone charging device circuit according to claim 1, it is characterised in that: further include a lighting module Circuit；The lighting module circuit includes a single-pole double-throw switch (SPDT) K2, a linear voltage regulator, a headlamp D3, a relay H2 and triode Q2；The linear voltage regulator includes 3 pins, and the 3rd pin is input port, and the 2nd pin is output port, 1st pin is grounding ports；Second supply port of the microcontroller is connect with the moved end of the single-pole double-throw switch (SPDT) K2； The second non-moving end of the single-pole double-throw switch (SPDT) K2 is connect with the 3rd pin of the linear voltage regulator, the linear voltage regulator The 2nd pin connect with the input terminal of the headlamp D3；The output end of the headlamp D3 and the linear voltage regulator 1st pin connect and ground；

First supply port of the microcontroller is connect with the emitting stage of the triode Q2, the collection of the triode Q2 Electrode is connect with one end of relay H2, the other end ground connection of the relay H2；The emitting stage and base stage of the triode Q2 Between be in series with resistance R24 and resistance R25；Between the port LIGHT and resistance R24 and resistance R25 of the microcontroller The connection of LIGHT incoming end.

7. a kind of solar mobile phone charging device circuit according to claim 2, it is characterised in that: first partial pressure is protected Protection circuit includes two concatenated resistance R4 and resistance R12；One end of the resistance R4 is with the single-pole double-throw switch (SPDT) K1's The connection of second non-moving end, one end ground connection of the resistance R12；First ADC voltage acquisition port of the microcontroller and electricity Hinder the ADC0 access point connection between R4 and resistance R12.

8. a kind of solar mobile phone charging device circuit according to claim 4, it is characterised in that: second partial pressure is protected Protection circuit includes two concatenated resistance R3 and resistance R11；One end of the resistance R3 is connect with the connecting terminal B+1, One end of the resistance R11 is connect with the connecting terminal B-1；2nd ADC voltage acquisition port of the microcontroller with ADC1 incoming end connection between resistance R3 and resistance R11.

9. a kind of solar mobile phone charging device circuit according to claim 4, it is characterised in that: the step-up discharge electricity Road includes TH69 boost chip, inductance L1, diode S3 and capacitor C2；One end of the inductance L1 and one end of diode S3 Series connection, the other end of inductance L1 are connect with connecting terminal B+1, and the other end of diode S3 is connected to the end VCCOUT；The electricity The one end for holding C2 is connected to the end VCCOUT, other end ground connection；1st pin of the TH69 boost chip is connected to the inductance Between L1 and diode S3, the 2nd pin ground connection.