CN201904637U - Solar charging control circuit - Google Patents
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- CN201904637U CN201904637U CN2010206842814U CN201020684281U CN201904637U CN 201904637 U CN201904637 U CN 201904637U CN 2010206842814 U CN2010206842814 U CN 2010206842814U CN 201020684281 U CN201020684281 U CN 201020684281U CN 201904637 U CN201904637 U CN 201904637U
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Abstract
A solar charging control circuit is used for controlling a solar battery to charge for a storage battery and supplying power for a load, which comprises a power supply conversion circuit, a sampling circuit, a microcontroller, a PWM (Pulse-Width Modulation) power driving circuit, an output protection and power driving circuit, a charge loop and a load loop. According to the characteristics and the charge/discharge features of a lead acid storage battery as well as the power output feature of the solar battery, the shortcomings existing in the current solar charge controller are overcome, and the use requirements for a large and medium solar photovoltaic power station are satisfied. The solar charging control circuit has the advantages of large capacity, high efficiency, low cost, longer service life, more accuracy in battery management, and more intelligent system.
Description
Technical field
The utility model relates to the power technology field, particularly relates to a kind of solar charging electric control circuit.
Background technology
Solar energy is a kind of inexhaustible, nexhaustible regenerative resource as a kind of new energy, and environment is not produced any pollution, becomes national governments and develops first-selection pollution-free, the sustainable development novel energy.Solar cell can directly be converted to electric energy to solar energy with higher efficient, environment is not produced any pollution, is a kind of generation mode of green.In photovoltaic generating system, lead acid accumulator and solar charging controller all are important components in the solar energy photovoltaic system, and storage battery can store instability, the discontinuous electric energy that solar cell sends, and guarantee that photovoltaic system has stable output.And the quality of charge controller not only determines the useful life of storage battery, but also directly influences the electric power output performance of photovoltaic system.
At present, a lot of solar charging controllers are arranged on the market, but there are the following problems:
1, some use the charge controller of simple control voltage, when battery tension rises to overcharged voltage (this moment, storage battery really was not full of fully), controller automatic disconnection charge circuit, yet because the effect of accumulator internal resistance, after disconnecting charge circuit, the voltage of storage battery can descend immediately.And after charge circuit was connected and disconnected with electric loading, same owing to accumulator internal resistance, the voltage of storage battery can rise immediately.So repeatedly, charge controller very easily produces vibration, not only makes the controller cisco unity malfunction, but also damages storage battery easily.When charging a battery, big electric current can cause energy loss, and can produce a large amount of gases in the charging later stage simultaneously, the life of storage battery is shortened, but just need for a long time, can't accomplish quick charge with low current charge, and the charging current difference is also different to the recovery of battery capacity.
2, existing simple type solar charging controller is after storage battery is full of; be the protection storage battery, the both positive and negative polarity of solar panel is carried out short circuit, can cause the joint temperature of solar panel array too high like this; damage solar panel easily, the useful life of reducing solar panel.
3, some solar charging controllers in charge circuit, adopt the mode that seals in diode to prevent reversal connection and prevent that night, battery current poured in down a chimney, and when charging, the conduction loss of diode is very big, has reduced the efficient of controller.
4, existing charge controller does not generally have the function of the maximum power electric tracing (MPPT) of solar cell, causes the energy conversion efficiency (generated output) of solar panel to can not get effective raising.
The utility model content
The purpose of this utility model is to overcome the defective that existing solar charging controller exists, at the instructions for use of big-and-middle-sized solar photovoltaic power plant, develop a kind of big capacity, high efficiency, low cost, longer service life, battery management is more accurate, system is more intelligent solar charging electric control circuit.
The purpose of this utility model realizes by following technical measures.
A kind of solar charging electric control circuit, be used to control solar cell to charge in batteries and power to the load, comprise power-switching circuit, sample circuit, microcontroller, pwm power drive circuit and output protection and power driving circuit, charge circuit and load circuit;
The positive pole of the positive pole of solar cell, the positive pole of storage battery and load connects together; Be connected to transient voltage between the positive pole of solar cell and the negative pole and suppress diode TVS with lightning protection function; The negative pole of storage battery is connected with public ground of logic BGND by two safety box FUSE1 in parallel, FUSE2;
Charge circuit comprises MOSFET Q10, Q11, Q12, Q20, Q21 and Q22, adopt power MOSFET array structure in parallel, the source electrode of Q10, Q11 and Q12 connects the negative pole of solar cell jointly, the grid of Q10, Q11 and Q12 connects the pwm power drive circuit jointly, the drain electrode of Q10 connects the drain electrode of Q20, and the drain electrode of Q11 connects the drain electrode of Q21, and the drain electrode of Q22 connects the drain electrode of Q22, the source electrode of Q20, Q21 and Q22 meets public ground of logic BGND, and the grid of Q20, Q21 and Q22 connects the pwm power drive circuit jointly;
Load circuit comprises MOSFET Q30, Q31 and Q32, and the grid of Q30, Q31 and Q32 connects output protection and power driving circuit jointly, and the drain electrode of Q30, Q31 and Q32 connects the negative pole of load, and the source electrode of Q30, Q31 and Q32 is connected together;
Microcontroller is by conducting and the shutoff of described output protection and power driving circuit control Q30, Q31 and Q32; The charging current sampling resistor is connected between Q20, Q21 and Q22 and public ground of the logic BGND; The load current sampling resistor is connected between power MOSFET Q30, Q31 and Q32 and public ground of the logic BGND;
Power-switching circuit produce two supply voltage+12VB and+5VB ,+12VB output connects pwm power drive circuit and output protection and power driving circuit ,+5VB output connects microcontroller;
Sample circuit sampling solar array voltage signal, charging current signal, battery tension signal, load current signal, battery temp signal are delivered to microcontroller, produce pwm control signal and load switch signal;
Microcontroller is realized the PWM charge mode by the conducting and the shutoff of pwm power drive circuit control charge circuit power MOSFET array; The output protection of microcontroller by load and the conducting and the shutoff of the power MOSFET array in power driving circuit control load loop.
Described power-switching circuit battery positive voltage is connected with the input Vin of voltage voltage stabilizing chip U1 through rectifier diode D1, and the output end vo ut of voltage voltage stabilizing chip U1 is connected with the input Vin of voltage voltage stabilizing chip U2; The negative electrode of diode D2 is connected with the input Vin of voltage voltage stabilizing chip U1, and anode is connected with the output end vo ut of voltage voltage stabilizing chip U1; The positive pole of capacitor C 1 is connected with the input Vin of voltage voltage stabilizing chip U1, and negative pole is connected with system logic ground BGND; The negative electrode of diode D3 is connected with the output end vo ut of voltage voltage stabilizing chip U1, and anode is connected with the adjustable side adj of voltage voltage stabilizing chip U1, and the positive pole of capacitor C 2 is connected with the anode of diode D3, and negative pole is connected with BGND; Resistance R 1 is in parallel with diode D3, and resistance R 2 is in parallel with capacitor C 2;
The output end vo ut of voltage voltage stabilizing chip U2 is+12VB, is connected with the input Vin of voltage voltage stabilizing chip U3, and the negative electrode of diode D4 is connected with the input Vin of voltage voltage stabilizing chip U2, and anode is connected with the output end vo ut of voltage voltage stabilizing chip U2; The positive pole of capacitor C 3 is connected with the input Vin of voltage voltage stabilizing chip U2, and negative pole is connected with system logic ground BGND; The negative electrode of diode D5 is connected with the output end vo ut of voltage voltage stabilizing chip U2, and anode is connected with the adjustable side adj of voltage voltage stabilizing chip U2, and the positive pole of capacitor C 4 is connected with the anode of diode D5, and negative pole is connected with BGND; Resistance R 3 is in parallel with diode D3, and resistance R 4 is in parallel with capacitor C 2; The positive pole of capacitor C 5 is connected with the input Vin of voltage voltage stabilizing chip U3, and negative pole is connected with system logic ground BGND; The positive pole of capacitor C 6 is connected with the output end vo ut of voltage voltage stabilizing chip U3, and negative pole is connected with system logic ground BGND, and capacitor C 7 is in parallel with capacitor C 6; The output end vo ut of voltage voltage stabilizing chip U3 is+5VB.
In the described sample circuit, operational amplifier U4A, U4B are connected into the voltage follower mode, the positive pole of solar cell is connected with the in-phase input end of operational amplifier U4A by resistance R 5, R6 series connection, the in-phase input end of diode D6 negative electrode and operational amplifier U4A is connected, anode is connected with BGND, resistance R 7, capacitor C 8 and diode D6 parallel connection; The output of operational amplifier U4A is connected with BGND through resistance R 12, R13 series connection, and the common port of resistance R 12, R13 is connected with the in-phase input end of operational amplifier U4C; The positive pole of solar cell is connected with the in-phase input end of operational amplifier U4B by resistance R 8, Radj, R9 series connection, wherein Radj is an adjustable resistance, the common port of resistance R 11 1 ends and resistance R 8, Radj is connected, and the negative pole SGND of the other end and solar cell is connected; The in-phase input end of diode D7 negative electrode and operational amplifier U4B is connected, and anode is connected with BGND, resistance R 10, capacitor C 9 and diode D7 parallel connection; The output of operational amplifier U4B is connected with the output of operational amplifier U4C through resistance R 14, R15 series connection, and the common port of resistance R 14, R15 is connected with the inverting input of operational amplifier U4C; The output end signal PVvolt of operational amplifier U4C is solar array voltage and adopts signal; Above-mentioned resistance configuration has following relation: R5=R8, R6=R9, R7=R10, R12=R14, R13=R15.
In the described PWM drive circuit, pwm signal by the microcontroller generation, base stage through current-limiting resistance R16 and NPN type triode Q10 is connected, the emitter of triode Q10 is connected with BGND, the collector electrode of triode Q10 is connected through the base stage of resistance R 17 and positive-negative-positive triode Q11, the base stage of triode Q11 connects and draws resistance R 18 to be connected with power supply+12VB simultaneously, and the emitter of triode Q11 is connected with power supply+12VB; The collector electrode of triode Q11 is connected with the base stage of NPN type triode Q12 through diode D8, resistance R 19 series connection, the emitter of triode Q12 is connected with SGND, the base stage of the collector electrode of triode Q12 and NPN type triode Q13, the base stage of positive-negative-positive triode Q14 link together, triode Q13 and Q14 form push pull configeration, and the collector electrode of triode Q14 is connected with SGND; The base stage of triode Q13 connects draws resistance R 20 to be connected with power supply+12VS, and the base electrode of triode Q13 is connected with power supply+12VS, and the emitter of triode Q13 is connected with the emitter of triode Q14.
The beneficial effects of the utility model are:
1, the utility model adopts cathode circuit topology altogether, and circuit structure is more simplified, and drive controlling is more succinct, and the entire system power consumption obviously reduces.
2, adopt MPPT maximum power point tracking (MPPT) technology, intelligence is regulated the solar cell working point voltage, make it to run on all the time on the characteristic maximum power point of I-V, guarantee that solar cell is in the maximum power value output state under the varying environment condition, with respect to general solar charging controller, can improve solar panels energy conversion efficiency (generated output) and reach 20-30%.
3, adopt advanced low-power consumption, high-performance microcontroller and self-adapting intelligent control algolithm, realize " MPPT+SOC " dual intelligent optimization charging control.
4, intelligent charge management.When occurring putting, storage battery is once all filled compensation safeguard.During normal the use, adopt perseverance to fill the charging modes of (constant current/constant voltage) and floating charge combination, with abundant prolongation storage battery useful life; The high precision temperature compensation function that has simultaneously makes charging control more accurate.
5, the switching device in bearing power loop adopts low-loss, high efficiency, long-life MOS FE array in parallel, has greatly reduced the power loss of bearing power output loop.
6, loop of power circuit has adopted synchronous rectification, has reduced the voltage drop of loop of power circuit.
7, because circuit system adopts the topological structure of optimizing, charging and discharging circuit adopts power MOSFET array structure in parallel efficiently, has realized that big capacity discharges and recharges function.
Description of drawings
Utilize accompanying drawing that the utility model is described further, but the content in the accompanying drawing does not constitute any restriction of the present utility model.
Fig. 1 is the circuit diagram of an embodiment of solar charging electric control circuit of the present utility model.
Fig. 2 is the circuit diagram of power-switching circuit of an embodiment of solar charging electric control circuit of the present utility model.
Fig. 3 is the circuit diagram of sample circuit of an embodiment of solar charging electric control circuit of the present utility model.
Fig. 4 is the circuit diagram of PWM drive circuit of an embodiment of solar charging electric control circuit of the present utility model.
Embodiment
The utility model is described in further detail with the following Examples.
Solar charging electric control circuit of the present utility model as shown in Figure 1; be used to control solar cell to charge in batteries and power to the load; comprise power-switching circuit, sample circuit, microcontroller, pwm power drive circuit and output protection and power driving circuit, charge circuit and load circuit, and modules such as protective circuit, man-machine interface circuit, LED and LCD display module.
This charge controller adopts cathode circuit topology altogether, and the positive pole of the positive pole of solar cell, the positive pole of storage battery and load connects together; Be connected to transient voltage between the positive pole of solar cell and the negative pole and suppress diode TVS with lightning protection function; The negative pole of storage battery is connected with public ground of logic BGND by two safety box FUSE1 in parallel, FUSE2; Charge circuit comprises MOSFET Q10, Q11, Q12, Q20, Q21 and Q22, adopt power MOSFET array structure in parallel, the source electrode of Q10, Q11 and Q12 connects the negative pole of solar cell jointly, the grid of Q10, Q11 and Q12 connects the pwm power drive circuit jointly, the drain electrode of Q10 connects the drain electrode of Q20, and the drain electrode of Q11 connects the drain electrode of Q21, and the drain electrode of Q22 connects the drain electrode of Q22, the source electrode of Q20, Q21 and Q22 meets public ground of logic BGND, and the grid of Q20, Q21 and Q22 connects the pwm power drive circuit jointly; Load circuit comprises MOSFET Q30, Q31 and Q32, and the grid of Q30, Q31 and Q32 connects output protection and power driving circuit jointly, and the drain electrode of Q30, Q31 and Q32 connects the negative pole of load, and the source electrode of Q30, Q31 and Q32 is connected together.
Q10, Q11 and Q12 are charging master power switch pipe, and power MOSFET Q20, Q21 and Q22 are connected into the synchronous rectification mode; Load circuit adopts power MOSFET structure in parallel, and microcontroller is by conducting and the shutoff of load output protection and power driving circuit control Q30, Q31 and Q32, thereby control system is powered to payload security; The charging current sampling resistor is connected between Q20, Q21 and Q22 and public ground of the logic BGND; The load current sampling resistor is connected between power MOSFET Q30, Q31 and Q32 and public ground of the logic BGND; Power-switching circuit produce two supply voltage+12VB and+5VB ,+12VB output connects pwm power drive circuit and output protection and power driving circuit ,+5VB output connects microcontroller, for microcontroller, analog circuit and digital circuit provide power supply; Sample circuit sampling solar array voltage signal, charging current signal, battery tension signal, load current signal, battery temp signal are delivered to microcontroller, produce pwm control signal and load switch signal; Microcontroller is realized the PWM charge mode by the conducting and the shutoff of pwm power drive circuit control charge circuit power MOSFET array; The output protection of microcontroller by load and the conducting and the shutoff of the power MOSFET array in power driving circuit control load loop realize the manual control and the automatic controlled function of load break-make; Microcontroller connects the keystroke interface circuit, manually the opening and turn-offing of control load path of user, and can revise system parameters; Microcontroller connects LED and LCD display module, intuitively shows the operating state of solar cell, storage battery and load.
Power-switching circuit such as Fig. 2 of an embodiment of solar charging electric control circuit of the present utility model adopt the multistage buck configuration of a plurality of power supply voltage stabilizing chips, realize high-tension step lowering and stabilizing blood pressure function, and the circuit system module is powered.The model of power supply voltage stabilizing chip U1, U2 is LM317, and the model of power supply voltage stabilizing chip U3 is AZ7805.Accumulator positive extreme (BAT+) is connected with the input Vin of voltage voltage stabilizing chip U1 through rectifier diode D1, and the output end vo ut of voltage voltage stabilizing chip U1 is connected with the input Vin of voltage voltage stabilizing chip U2.The negative electrode of diode D2 is connected with the input Vin of voltage voltage stabilizing chip U1, and anode is connected with the output end vo ut of voltage voltage stabilizing chip U1; The positive pole of capacitor C 1 is connected with the input Vin of voltage voltage stabilizing chip U1, and negative pole is connected with system logic ground BGND; The negative electrode of diode D3 is connected with the output end vo ut of voltage voltage stabilizing chip U1, and anode is connected with the adjustable side adj of voltage voltage stabilizing chip U1, and the positive pole of capacitor C 2 is connected with the anode of diode D3, and negative pole is connected with BGND.Resistance R 1 is in parallel with diode D3, and resistance R 2 is in parallel with capacitor C 2.
The output end vo ut of voltage voltage stabilizing chip U2 is+12VB, is connected with the input Vin of voltage voltage stabilizing chip U3, and the negative electrode of diode D4 is connected with the input Vin of voltage voltage stabilizing chip U2, and anode is connected with the output end vo ut of voltage voltage stabilizing chip U2; The positive pole of capacitor C 3 is connected with the input Vin of voltage voltage stabilizing chip U2, and negative pole is connected with system logic ground BGND; The negative electrode of diode D5 is connected with the output end vo ut of voltage voltage stabilizing chip U2, and anode is connected with the adjustable side adj of voltage voltage stabilizing chip U2, and the positive pole of capacitor C 4 is connected with the anode of diode D5, and negative pole is connected with BGND; Resistance R 3 is in parallel with diode D3, and resistance R 4 is in parallel with capacitor C 2; The positive pole of capacitor C 5 is connected with the input Vin of voltage voltage stabilizing chip U3, and negative pole is connected with system logic ground BGND; The positive pole of capacitor C 6 is connected with the output end vo ut of voltage voltage stabilizing chip U3, and negative pole is connected with system logic ground BGND, and capacitor C 7 is in parallel with capacitor C 6; The output end vo ut of voltage voltage stabilizing chip U3 is+5VB.
The sample circuit of an embodiment of solar charging electric control circuit of the present utility model adopts differential amplifier circuit as shown in Figure 3, and operational amplifier U4A, U4B are connected into the voltage follower mode.The positive pole of solar cell (PV+) is connected with the in-phase input end of operational amplifier U4A by resistance R 5, R6 series connection, the in-phase input end of diode D6 negative electrode and operational amplifier U4A is connected, anode is connected with BGND, resistance R 7, capacitor C 8 and diode D6 parallel connection; The output of operational amplifier U4A is connected with BGND through resistance R 12, R13 series connection, and the common port of resistance R 12, R13 is connected with the in-phase input end of operational amplifier U4C.The positive pole of solar cell (PV+) is connected with the in-phase input end of operational amplifier U4B by resistance R 8, Radj, R9 series connection, wherein Radj is an adjustable resistance, be used for the zeroing of solar cell sampled signal, the common port of resistance R 11 1 ends and resistance R 8, Radj is connected, and the negative pole SGND of the other end and solar cell is connected; The in-phase input end of diode D7 negative electrode and operational amplifier U4B is connected, and anode is connected with BGND, resistance R 10, capacitor C 9 and diode D7 parallel connection; The output of operational amplifier U4B is connected with the output of operational amplifier U4C through resistance R 14, R15 series connection, and the common port of resistance R 14, R15 is connected with the inverting input of operational amplifier U4C; The output end signal PVvolt of operational amplifier U4C is solar array voltage and adopts signal; Above-mentioned resistance configuration has following relation: R5=R8, R6=R9, R7=R10, R12=R14, R13=R15.
PWM drive circuit such as Fig. 4 of an embodiment of solar charging electric control circuit of the present utility model, pwm signal by the microcontroller generation, base stage through current-limiting resistance R16 and NPN type triode Q10 is connected, the emitter of triode Q10 is connected with BGND, the collector electrode of triode Q10 is connected through the base stage of resistance R 17 and positive-negative-positive triode Q11, the base stage of triode Q11 connects and draws resistance R 18 to be connected with power supply+12VB simultaneously, and the emitter of triode Q11 is connected with power supply+12VB; The collector electrode of triode Q11 is connected with the base stage of NPN type triode Q12 through diode D8, resistance R 19 series connection, the emitter of triode Q12 is connected with SGND, the base stage of the collector electrode of triode Q12 and NPN type triode Q13, the base stage of positive-negative-positive triode Q14 link together, triode Q13 and Q14 form push pull configeration, and the collector electrode of triode Q14 is connected with SGND; The base stage of triode Q13 connects draws resistance R 20 to be connected with power supply+12VS, the base electrode of triode Q13 is connected with power supply+12VS, the emitter of triode Q13 is connected with the emitter of triode Q14, and the emitter output of triode Q13 is the PWM drive signal of charge circuit power MOSFET array.
Should be noted that at last; above embodiment only is used to the technical solution of the utility model is described but not to the restriction of the utility model protection range; although the utility model has been done detailed description with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can make amendment or be equal to replacement the technical solution of the utility model, and not break away from the essence and the scope of technical solutions of the utility model.
Claims (4)
1. solar charging electric control circuit, be used to control solar cell to charge in batteries and power to the load, it is characterized in that: comprise power-switching circuit, sample circuit, microcontroller, pwm power drive circuit and output protection and power driving circuit, charge circuit and load circuit;
The positive pole of the positive pole of solar cell, the positive pole of storage battery and load connects together; Be connected to transient voltage between the positive pole of solar cell and the negative pole and suppress diode TVS with lightning protection function; The negative pole of storage battery is connected with public ground of logic BGND by two safety box FUSE1 in parallel, FUSE2;
Charge circuit comprises MOSFET Q10, Q11, Q12, Q20, Q21 and Q22, adopt power MOSFET array structure in parallel, the source electrode of Q10, Q11 and Q12 connects the negative pole of solar cell jointly, the grid of Q10, Q11 and Q12 connects the pwm power drive circuit jointly, the drain electrode of Q10 connects the drain electrode of Q20, and the drain electrode of Q11 connects the drain electrode of Q21, and the drain electrode of Q22 connects the drain electrode of Q22, the source electrode of Q20, Q21 and Q22 meets public ground of logic BGND, and the grid of Q20, Q21 and Q22 connects the pwm power drive circuit jointly;
Load circuit comprises MOSFET Q30, Q31 and Q32, and the grid of Q30, Q31 and Q32 connects output protection and power driving circuit jointly, and the drain electrode of Q30, Q31 and Q32 connects the negative pole of load, and the source electrode of Q30, Q31 and Q32 is connected together;
Microcontroller is by conducting and the shutoff of described output protection and power driving circuit control Q30, Q31 and Q32; The charging current sampling resistor is connected between Q20, Q21 and Q22 and public ground of the logic BGND; The load current sampling resistor is connected between power MOSFET Q30, Q31 and Q32 and public ground of the logic BGND;
Power-switching circuit produce two supply voltage+12VB and+5VB ,+12VB output connects pwm power drive circuit and output protection and power driving circuit ,+5VB output connects microcontroller;
Sample circuit sampling solar array voltage signal, charging current signal, battery tension signal, load current signal, battery temp signal are delivered to microcontroller, produce pwm control signal and load switch signal;
Microcontroller is realized the PWM charge mode by the conducting and the shutoff of pwm power drive circuit control charge circuit power MOSFET array; The output protection of microcontroller by load and the conducting and the shutoff of the power MOSFET array in power driving circuit control load loop.
2. solar charging electric control circuit according to claim 1, it is characterized in that: described power-switching circuit battery positive voltage is connected with the input Vin of voltage voltage stabilizing chip U1 through rectifier diode D1, and the output end vo ut of voltage voltage stabilizing chip U1 is connected with the input Vin of voltage voltage stabilizing chip U2; The negative electrode of diode D2 is connected with the input Vin of voltage voltage stabilizing chip U1, and anode is connected with the output end vo ut of voltage voltage stabilizing chip U1; The positive pole of capacitor C 1 is connected with the input Vin of voltage voltage stabilizing chip U1, and negative pole is connected with system logic ground BGND; The negative electrode of diode D3 is connected with the output end vo ut of voltage voltage stabilizing chip U1, and anode is connected with the adjustable side adj of voltage voltage stabilizing chip U1, and the positive pole of capacitor C 2 is connected with the anode of diode D3, and negative pole is connected with BGND; Resistance R 1 is in parallel with diode D3, and resistance R 2 is in parallel with capacitor C 2;
The output end vo ut of voltage voltage stabilizing chip U2 is+12VB, is connected with the input Vin of voltage voltage stabilizing chip U3, and the negative electrode of diode D4 is connected with the input Vin of voltage voltage stabilizing chip U2, and anode is connected with the output end vo ut of voltage voltage stabilizing chip U2; The positive pole of capacitor C 3 is connected with the input Vin of voltage voltage stabilizing chip U2, and negative pole is connected with system logic ground BGND; The negative electrode of diode D5 is connected with the output end vo ut of voltage voltage stabilizing chip U2, and anode is connected with the adjustable side adj of voltage voltage stabilizing chip U2, and the positive pole of capacitor C 4 is connected with the anode of diode D5, and negative pole is connected with BGND; Resistance R 3 is in parallel with diode D3, and resistance R 4 is in parallel with capacitor C 2; The positive pole of capacitor C 5 is connected with the input Vin of voltage voltage stabilizing chip U3, and negative pole is connected with system logic ground BGND; The positive pole of capacitor C 6 is connected with the output end vo ut of voltage voltage stabilizing chip U3, and negative pole is connected with system logic ground BGND, and capacitor C 7 is in parallel with capacitor C 6; The output end vo ut of voltage voltage stabilizing chip U3 is+5VB.
3. solar charging electric control circuit according to claim 1, it is characterized in that: in the described sample circuit, operational amplifier U4A, U4B are connected into the voltage follower mode, the positive pole of solar cell is connected with the in-phase input end of operational amplifier U4A by resistance R 5, R6 series connection, the in-phase input end of diode D6 negative electrode and operational amplifier U4A is connected, anode is connected with BGND, resistance R 7, capacitor C 8 and diode D6 parallel connection; The output of operational amplifier U4A is connected with BGND through resistance R 12, R13 series connection, and the common port of resistance R 12, R13 is connected with the in-phase input end of operational amplifier U4C; The positive pole of solar cell is connected with the in-phase input end of operational amplifier U4B by resistance R 8, Radj, R9 series connection, wherein Radj is an adjustable resistance, the common port of resistance R 11 1 ends and resistance R 8, Radj is connected, and the negative pole SGND of the other end and solar cell is connected; The in-phase input end of diode D7 negative electrode and operational amplifier U4B is connected, and anode is connected with BGND, resistance R 10, capacitor C 9 and diode D7 parallel connection; The output of operational amplifier U4B is connected with the output of operational amplifier U4C through resistance R 14, R15 series connection, and the common port of resistance R 14, R15 is connected with the inverting input of operational amplifier U4C; The output end signal PVvolt of operational amplifier U4C is solar array voltage and adopts signal; Above-mentioned resistance configuration has following relation: R5=R8, R6=R9, R7=R10, R12=R14, R13=R15.
4. solar charging electric control circuit according to claim 1, it is characterized in that: in the described PWM drive circuit, pwm signal by the microcontroller generation, base stage through current-limiting resistance R16 and NPN type triode Q10 is connected, the emitter of triode Q10 is connected with BGND, the collector electrode of triode Q10 is connected through the base stage of resistance R 17 and positive-negative-positive triode Q11, the base stage of triode Q11 connects and draws resistance R 18 to be connected with power supply+12VB simultaneously, and the emitter of triode Q11 is connected with power supply+12VB; The collector electrode of triode Q11 is connected with the base stage of NPN type triode Q12 through diode D8, resistance R 19 series connection, the emitter of triode Q12 is connected with SGND, the base stage of the collector electrode of triode Q12 and NPN type triode Q13, the base stage of positive-negative-positive triode Q14 link together, triode Q13 and Q14 form push pull configeration, and the collector electrode of triode Q14 is connected with SGND; The base stage of triode Q13 connects draws resistance R 20 to be connected with power supply+12VS, and the base electrode of triode Q13 is connected with power supply+12VS, and the emitter of triode Q13 is connected with the emitter of triode Q14.
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| CN102035238A (en) * | 2010-12-28 | 2011-04-27 | 广东易事特电源股份有限公司 | Solar charging control circuit |
| CN103094945A (en) * | 2012-10-11 | 2013-05-08 | 安徽天堂唯高塑业科技有限公司 | Mobile power source circuit |
| CN103595111A (en) * | 2013-10-29 | 2014-02-19 | 江苏绿扬电子仪器集团有限公司 | Charging system using pulse width modulation signal to control storage battery |
| CN107154638A (en) * | 2017-05-25 | 2017-09-12 | 河南迎基太阳能科技有限公司 | Charging and discharging lithium battery controller |
| TWI625020B (en) * | 2017-07-26 | 2018-05-21 | 絜靜精微有限公司 | Hybrid solar conversion system |
| CN109358246A (en) * | 2018-10-19 | 2019-02-19 | 福建和盛高科技产业有限公司 | A kind of solar charging power detection circuit and detection method based on common-anode charger |
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2010
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102035238A (en) * | 2010-12-28 | 2011-04-27 | 广东易事特电源股份有限公司 | Solar charging control circuit |
| CN102035238B (en) * | 2010-12-28 | 2012-10-31 | 广东易事特电源股份有限公司 | Solar charging control circuit |
| CN103094945A (en) * | 2012-10-11 | 2013-05-08 | 安徽天堂唯高塑业科技有限公司 | Mobile power source circuit |
| CN103094945B (en) * | 2012-10-11 | 2015-11-18 | 安徽天堂唯高塑业科技有限公司 | A kind of portable power source circuit |
| CN103595111A (en) * | 2013-10-29 | 2014-02-19 | 江苏绿扬电子仪器集团有限公司 | Charging system using pulse width modulation signal to control storage battery |
| CN107154638A (en) * | 2017-05-25 | 2017-09-12 | 河南迎基太阳能科技有限公司 | Charging and discharging lithium battery controller |
| CN107154638B (en) * | 2017-05-25 | 2023-05-02 | 沈阳清能院清洁能源有限公司 | Lithium battery charge-discharge controller |
| TWI625020B (en) * | 2017-07-26 | 2018-05-21 | 絜靜精微有限公司 | Hybrid solar conversion system |
| CN109358246A (en) * | 2018-10-19 | 2019-02-19 | 福建和盛高科技产业有限公司 | A kind of solar charging power detection circuit and detection method based on common-anode charger |
| CN109358246B (en) * | 2018-10-19 | 2020-11-17 | 福建和盛高科技产业有限公司 | Solar charging detection circuit and detection method based on common anode charger |
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Granted publication date: 20110720 Termination date: 20161228 |