CN204795761U - Solar street lamp control circuit - Google Patents

Abstract

The utility model provides a pair of solar street lamp control circuit, this circuit includes: the solar photovoltaic power generation system comprises a storage battery module 1, an IC working power supply module 2, a solar panel input module 3, an MCU main control module 4, a PWM charging and backflow prevention switch module 5, a load switch module 6, a temperature detection module 7, a storage battery voltage detection module 8 and a photovoltaic panel voltage detection module 9. The utility model discloses a solar street lamp control circuit utilizes the signal that temperature compensation, photovoltaic board voltage detected and battery voltage detection module obtained and then the charge-discharge state of reasonable adjustment battery and the power of adjustment street lamp, improves the life of battery and street lamp, improves the discharge capacity of battery and whole control circuit's stability.

Description

A solar street light control circuit

technical field

The utility model relates to the technical field of solar street lamp control, in particular to a solar street lamp control circuit.

Background technique

At present, street lamps are becoming more and more popular in people's lives. Street lights need electric energy to supply power, and the existing electric energy is mainly converted by wind power, water power, fire power, etc. The use of these energies will not only require a lot of energy, but also have a greater impact on the environment, and solar energy can be seen everywhere, so solar energy is used in street lights is the problem that needs to be solved at present.

However, in the existing street lamps powered by solar energy, the service life of the battery is shortened due to no reasonable protection measures for the battery voltage being too high or too low in the control circuit, and there is no corresponding when the voltage of the battery is not within the standard range. Adjusting the power of the street lamp shortens the life of the street lamp.

Therefore, it is necessary to provide a solar street lamp control circuit to solve the above technical problems.

Utility model content

The technical problem mainly solved by the utility model is to provide a solar street lamp control circuit, improve the service life of the storage battery and the street lamp, improve the discharge capacity of the storage battery and the stability of the entire control circuit.

In order to solve the above technical problems, a technical solution adopted by the utility model is to provide a solar street lamp controller, including: battery module 1, IC working power supply module 2, solar panel input module 3, MCU main control module 4, PWM charging and Anti-backflow switch module 5, load switch module 6, temperature detection module 7, battery voltage detection module 8 and photovoltaic panel voltage detection module 9, wherein,

The battery module 1 includes a battery, the positive pole of the battery is grounded through a capacitor C3, and the negative pole of the battery is grounded;

The IC working power supply module 2 is electrically connected with the positive pole of the battery to generate a stable voltage of 5V. The IC working power supply module 2 includes a resistor R2, a 4148 type diode D2, a voltage regulator diode ZD1, a crystal oscillator C1, a 7805 voltage regulator tube U1, and capacitors C2 and R2 One end is connected to the positive pole of the battery, the other end is connected to the positive pole of the 4148 type diode D2, the negative pole of the 4148 type diode D2 is connected to the input end of the 7805 voltage regulator tube, the Zener voltage diode is connected to the negative pole of the ZD1, one end of the crystal oscillator C1, the positive pole of ZD1, the other end of the crystal oscillator C1 and the 7805 voltage regulator tube The ground terminal of the 7805 regulator tube is grounded, and the output terminal of the 7805 voltage regulator is grounded through the capacitor C2;

The solar panel input module 3 includes a solar panel and a diode D1 connected in parallel with it, the negative pole of D1 is connected to the positive pole of the battery, and the positive pole of D1 is grounded;

MCU main control module 4 comprises the single-chip microcomputer that model is STC15F204EA-SOP-20, switch K1, equivalent resistance R3, R4, R7, R14 and R15, same model light-emitting diode ZD1, ZD2, ZD3, ZD4 and ZD5, described single-chip microcomputer 18 A switch K1 is connected between the pin and the grounding terminal. The pins 4, 5, 6, 7, 9, 15, 16, and 17 of the single-chip microcomputer are unloaded. One end of R14, the other end of R14 is connected to the negative pole of the light-emitting diode ZD4, the 13-pin of the single-chip microcomputer is connected to one end of R7, the other end of R7 is connected to the negative pole of the light-emitting diode ZD3, the 14-pin of the single-chip microcomputer is connected to one end of R4, the other end of R4 is connected to the negative pole of the light-emitting diode ZD2, and the 15-pin of the single-chip microcomputer is connected to one end of R3 , the other end of R3 is connected to the negative pole of the light-emitting diode ZD1, and the positive poles of the light-emitting diodes ZD1, ZD2, ZD3, ZD4, and ZD5 are connected to the output terminal of the 7805 voltage regulator tube;

The PWM charging and anti-backflow switch module 5 includes resistors R10, R11 and R15, a first mose tube and a second mose tube with a model number of 3205, a transistor Q2 with a model number of 9013, a transistor Q3 with a model number of 9015, a diode D5, and a capacitor C4. PC317 chip, wherein the resistance values of resistors R10 and R11 are equal, the D poles of the first mose and the second mose tubes are grounded, the G poles are connected to each other, the S poles are connected to the collector of Q3 and the third pin of the chip PC317, the positive pole of the diode D5, One end of the capacitor C4, the cathode of the diode D5 and the other end of the capacitor C4 are connected to the collector of Q2, the base of Q3 is connected to the base of Q2 and the fourth pin of the chip PC317, the emitter is connected to the emitter of Q2, and the collector of Q2 is connected to the resistor R10. The base of Q2 is connected to R11, the other end of R10 and R11 is connected to the positive pole of the battery, the second pin of the chip PC317 is connected to the resistor R15 in series, and then connected to the 19th pin of the single chip microcomputer, and the first pin is connected to the output end of the 7805 voltage regulator tube;

The load switch module 6 includes resistors R12 and R13, the second triode Q1 of model 9013, diode D5, the third mose tube of model 3205, diode D2 of 51CA type and load. One end of R12 is connected to pin 20 of the microcontroller, and the other end Connect to the base of Q1, the collector of Q1, the negative pole of D5, the G pole of the third mose tube connect to one end of R13, the other end of R13 is connected to the positive pole of the battery, the emitter of Q1, the positive pole of D5, the S pole of the third mose tube is grounded, and the D pole of the third mose tube is connected to One input terminal of the load and the positive pole of D2, the other input terminal of the load and the negative pole of D2 are connected to the positive pole of the battery;

The temperature detection module 7 includes resistors R1 and R5. One end of R1 is connected to the output end of the 7805 voltage regulator tube, the other end is connected to one end of R5 and pin 1 of the single-chip microcomputer, and the other end of R5 is grounded;

The battery voltage detection module 8 includes resistors R12, R6 and a capacitor C5. One end of R12 is connected to the positive pole of the battery, the other end is connected to pin 2 of the microcontroller, one end of R6 and one end of C5, and the other end of R6 and C5 is grounded;

Photovoltaic panel voltage detection module 9 includes resistors R8, R9, R17 and capacitor C5. One end of resistor R8 is connected to the output end of the 7805 voltage regulator tube, the other end of R8 is connected to pin 3 of the microcontroller, one end of R9, one end of R17, one end of C5, R9, R17 and The other end of C5 is grounded;

Among them, the solar panel input module 3 is used to charge the battery module 1, and the IC working power supply module 2 is used to provide MCU main control module 4, PWM charging and anti-backflow switch module 5, temperature detection module 7 and photovoltaic panel voltage detection module 9. 5V stable voltage, the temperature detection module 7 is used for temperature compensation of the battery capacity charge and discharge capacity, the battery voltage detection module 8 is used to detect the voltage signal of the battery, and sends the voltage signal to the MCU main control module 4 to realize automatic load adjustment Power, and cut off the charging circuit of the battery when the voltage of the battery is too high, and cut off the discharge circuit of the battery when the voltage of the battery is too small, the photovoltaic panel voltage detection module 9 is used to detect the active voltage of the photovoltaic panel and send the voltage signal to the MCU main control The module 4 further controls the PWM charging and anti-backflow switch module 5 to cut off the charging circuit of the storage battery when the applied voltage of the photovoltaic panel is too large.

The preferred MCU main control module 4 further includes a TTL type communication connection socket CON1, the 11 pins of the PC317 chip are connected to an input pin of CON1, the 12 pins of the PC317 chip are connected to another input pin of CON1, the ground terminal of CON1 is grounded, and the three pins of CON1 are connected. The plug-in port is used to plug in the communication cable.

The utility model provides a solar street lamp control circuit, which uses the signals obtained from temperature compensation, photovoltaic panel voltage detection and battery voltage detection module to reasonably adjust the charge and discharge state of the battery and adjust the power of the street lamp to improve the service life of the battery and the street lamp. Improve the discharge capacity of the battery and the stability of the entire control circuit.

Description of drawings

Fig. 1 is a structural schematic diagram of a preferred embodiment of a solar street lamp control circuit of the present utility model;

FIG. 2 is a schematic structural diagram of the MCU main control module 4 of the solar street lamp control circuit shown in FIG. 1 .

Detailed ways

Please refer to Fig. 1, the solar control circuit of this embodiment includes: battery module 1, IC working power supply module 2, solar panel input module 3, MCU main control module 4, PWM charging and anti-backflow switch module 5, load switch module 6. A temperature detection module 7 , a battery voltage detection module 8 and a photovoltaic panel voltage detection module 9 .

In this embodiment, the battery module 1 includes a battery, the positive pole of the battery is grounded through a capacitor C3, and the negative pole of the battery is grounded.

In this embodiment, the IC working power supply module 2 is electrically connected to the positive pole of the storage battery to generate a stable voltage of 5V. The IC working power supply module 2 includes a resistor R2, a 4148 type diode D2, a voltage regulator diode ZD1, a crystal oscillator C1, and a 7805 voltage regulator tube. U1, capacitor C2, one end of R2 is connected to the positive pole of the battery, the other end is connected to the positive pole of the 4148 type diode D2, the negative pole of the 4148 type diode D2 is connected to the input end of the 7805 regulator tube, the voltage regulator diode is connected to the negative pole of ZD1, one end of the crystal oscillator C1, the positive pole of the ZD1, and the other end of the crystal oscillator C1 One end is grounded with the ground terminal of the 7805 regulator tube, and the output terminal of the 7805 regulator tube is grounded through the capacitor C2.

In this case, the solar panel input module 3 includes a solar panel and a diode D1 connected in parallel with it. The negative pole of D1 is connected to the positive pole of the battery, and the positive pole of D1 is grounded.

As shown in Figure 2, in this embodiment, the MCU main control module 4 includes a single-chip microcomputer model STC15F204EA-SOP-20, a switch K1, equivalent resistors R3, R4, R7, R14 and R15, the same model light-emitting diode ZD1, ZD2, ZD3, ZD4 and ZD5, a switch K1 is connected between the 18 pins of the single-chip microcomputer and the ground terminal, the pins 4, 5, 6, 7, 9, 15, 16, and 17 of the single-chip microcomputer are unloaded, and the 11 pins of the single-chip microcomputer are connected to one end of R15, R15 The other end is connected to the negative pole of the light-emitting diode ZD5, the 12-pin of the single-chip microcomputer is connected to one end of R14, the other end of R14 is connected to the negative pole of the light-emitting diode ZD4, the 13-pin of the single-chip microcomputer is connected to one end of R7, the other end of R7 is connected to the negative pole of the light-emitting diode ZD3, the 14-pin of the single-chip microcomputer is connected to one end of R4, and the other end of R4 Connect the negative pole of the light-emitting diode ZD2, the 15-pin of the microcontroller is connected to one end of R3, the other end of R3 is connected to the negative pole of the light-emitting diode ZD1, and the positive poles of the light-emitting diodes ZD1, ZD2, ZD3, ZD4, and ZD5 are connected to the output terminal of the 7805 regulator tube. In this embodiment, the light emitting diodes ZD1, ZD2, ZD3, ZD4, ZD5 are used to comprehensively display the electric quantity of the storage battery. The manager can visually observe the power of the battery and whether it is working normally during the entire charge and discharge process of the battery by checking the number of light-emitting diodes.

In this embodiment, the PWM charging and anti-backflow switch module 5 includes resistors R10, R11 and R15, a first mose tube and a second mose tube with a model number of 3205, a transistor Q2 with a model number of 9013, and a transistor Q3 with a model number of 9015. Diode D5, capacitor C4, PC317 chip, among them, resistors R10 and R11 have the same resistance value, the D poles of the first mose and the second mose tube are grounded, the G poles are connected to each other, the S poles are connected to the collector of Q3 and the third pole of the chip PC317 Pin, the positive pole of diode D5, one end of capacitor C4, the negative pole of diode D5 and the other end of capacitor C4 are connected to the collector of Q2, the base of Q3 is connected to the base of Q2 and the fourth pin of chip PC317, the emitter is connected to the emitter of Q2, Q2 The collector is connected to resistor R10, the base of Q2 is connected to R11, the other end of R10 and R11 is connected to the positive pole of the battery, the second leg of the chip PC317 is connected in series with resistor R15, and then connected to pin 19 of the single chip microcomputer, and the first leg is connected to the output end of the 7805 regulator tube.

In this embodiment, the load switch module 6 includes resistors R12 and R13, a second triode Q1 with a model of 9013, a diode D5, a third mose tube with a model of 3205, a diode D2 of a 51CA type, and a load, and one end of R12 is connected to MCU 20 pins, the other end is connected to the base of Q1, the collector of Q1, the negative pole of D5, the G pole of the third mose tube is connected to one end of R13, the other end of R13 is connected to the positive pole of the battery, the emitter of Q1, the positive pole of D5 is connected to the S pole of the third mose tube, and the third mose tube S pole is grounded. The D pole of the three mose tubes is connected to the first input terminal of the load and the positive pole of D2, and the other input terminal of the load and the negative pole of D2 are connected to the positive pole of the battery;

The temperature detection module 7 includes resistors R1 and R5. One end of R1 is connected to the output end of the 7805 regulator tube, the other end is connected to one end of R5 and pin 1 of the microcontroller, and the other end of R5 is grounded.

In this embodiment, the battery voltage detection module 8 includes resistors R12, R6 and a capacitor C5. One end of R12 is connected to the positive pole of the battery, the other end is connected to pin 2 of the microcontroller, one end of R6 and one end of C5, and the other end of R6 and C5 is grounded.

In this embodiment, the photovoltaic panel voltage detection module 9 includes resistors R8, R9, R17 and a capacitor C5. One end of the resistor R8 is connected to the output end of the 7805 voltage regulator tube, and the other end of R8 is connected to pin 3 of the microcontroller, one end of R9, one end of R17, and C5 One end, R9, R17 and the other end of C5 are grounded.

In this embodiment, the solar panel input module 3 is used to charge the battery module 1, and the IC working power supply module 2 is used for the MCU main control module 4, PWM charging and backflow prevention switch module 5, temperature detection module 7 and photovoltaic panel voltage The detection module 9 provides a stable voltage of 5V, the temperature detection module 7 is used to perform temperature compensation to the battery capacity charge and discharge capacity, and the battery voltage detection module 8 is used to detect the voltage signal of the battery, and the voltage signal is sent to the MCU main control module 4 and then Realize automatic adjustment of load power, and cut off the charging circuit of the battery when the battery voltage is too high, and cut off the discharge circuit of the battery when the voltage of the battery is too low, and the photovoltaic panel voltage detection module 9 is used to detect the active voltage of the photovoltaic panel and transmit the voltage signal The MCU main control module 4 further controls the PWM charging and the anti-backflow switch module 5 to cut off the charging circuit of the storage battery when the voltage applied by the photovoltaic panel is too large.

In an embodiment of the present utility model, the preferred MCU main control module 4 further includes a TTL type communication connection socket CON1, the 11 pins of the PC317 chip are connected to an input pin of CON1, and the 12 pins of the PC317 chip are connected to another input pin of CON1, The ground terminal of CON1 is grounded, and the three-plug output port of CON1 is used to plug in the communication cable.

Of course, the resistors, capacitors, common diodes, Zener diodes, etc. that appear in the embodiments of the utility model can be replaced by other electronic devices that can realize the same function in the utility model, all within the protection scope of the utility model Inside.

The utility model provides a solar street lamp control circuit, which uses the signals obtained from temperature compensation, photovoltaic panel voltage detection and battery voltage detection module to reasonably adjust the charge and discharge state of the battery and adjust the power of the street lamp to improve the service life of the battery and the street lamp. Improve the discharge capacity of the battery and the stability of the entire control circuit.

The above is only an embodiment of the utility model, and does not limit the patent scope of the utility model. Any equivalent structure made by using the description of the utility model and the contents of the accompanying drawings, or directly or indirectly used in other related technical fields, All are included in the scope of patent protection of the utility model in the same way.

Claims (2)

1. A solar street light control circuit, characterized in that it comprises: battery module (1), IC working power supply module (2), solar panel input module (3), MCU main control module (4), PWM charging and anti-backflow switch module (5), load switch module (6), temperature detection module (7), battery voltage detection module (8) and photovoltaic panel voltage detection module (9), wherein, The battery module (1) includes a battery, the positive pole of the battery is grounded through a capacitor C3, and the negative pole of the battery is grounded; The IC working power supply module (2) is electrically connected with the positive pole of the storage battery to generate a stable voltage of 5V. The IC working power supply module (2) includes a resistor R2, a 4148 type diode D2, a voltage regulator diode ZD1, a crystal oscillator C1, a 7805 voltage regulator tube U1, Capacitor C2, one end of R2 is connected to the positive pole of the battery, the other end is connected to the positive pole of the 4148 type diode D2, the negative pole of the 4148 type diode D2 is connected to the input end of the 7805 voltage regulator tube, the Zener diode is connected to the negative pole of ZD1, one end of the crystal oscillator C1, the positive pole of ZD1, the other end of the crystal oscillator C1 and The ground terminal of the 7805 regulator tube is grounded, and the output terminal of the 7805 regulator tube is grounded through the capacitor C2; The solar panel input module (3) includes a solar panel and a diode D1 connected in parallel with it, the negative pole of D1 is connected to the positive pole of the battery, and the positive pole of D1 is grounded; MCU main control module (4) comprises the single-chip microcomputer that model is STC15F204EA-SOP-20, switch K1, equivalent resistance R3, R4, R7, R14 and R15, same model light-emitting diode ZD1, ZD2, ZD3, ZD4 and ZD5, described A switch K1 is connected between pin 18 of the single-chip microcomputer and the ground terminal, pins 4, 5, 6, 7, 9, 15, 16, and 17 of the single-chip microcomputer are unloaded, pin 11 of the single-chip microcomputer is connected to one end of R15, and the other end of R15 is connected to the negative pole of the light-emitting diode ZD5, and the single-chip microcomputer 12 The pin is connected to one end of R14, the other end of R14 is connected to the negative pole of the light-emitting diode ZD4, the pin 13 of the single-chip microcomputer is connected to one end of R7, the other end of R7 is connected to the negative pole of the light-emitting diode ZD3, the pin 14 of the single-chip microcomputer is connected to one end of R4, the other end of R4 is connected to the negative pole of the light-emitting diode ZD2, and the pin 15 of the single-chip microcomputer is connected to One end of R3, the other end of R3 is connected to the negative pole of the light-emitting diode ZD1, and the positive poles of the light-emitting diodes ZD1, ZD2, ZD3, ZD4, and ZD5 are connected to the output end of the 7805 voltage regulator tube; The PWM charging and anti-backflow switch module (5) includes resistors R10, R11 and R15, the first mose tube and the second mose tube that the model is 3205, the triode Q2 that the model is 9013, the triode Q3 that the model is 9015, the diode D5, the capacitor C4, PC317 chip, wherein the resistors R10 and R11 have the same resistance value, the D poles of the first mose and the second mose tube are grounded, the G poles are connected to each other, the S poles are connected to the collector of Q3 and the third pin of the chip PC317, and the diode D5 The positive pole, one end of capacitor C4, the negative pole of diode D5 and the other end of capacitor C4 are connected to the collector of Q2, the base of Q3 is connected to the base of Q2 and the fourth pin of the chip PC317, the emitter is connected to the emitter of Q2, and the collector of Q2 is connected to the resistor R10, the base of Q2 is connected to R11, the other end of R10 and R11 is connected to the positive pole of the battery, the second pin of the chip PC317 is connected to the resistor R15 in series, and then connected to the 19th pin of the single-chip microcomputer, and the first pin is connected to the output end of the 7805 voltage regulator tube; The load switch module (6) comprises resistance R12 and R13, the second triode Q1 of model 9013, diode D5, the third mose tube of model 3205, diode D2 and load of 51CA type, and one end of R12 is connected with 20 pins of single chip microcomputer, The other end is connected to the base of Q1, the collector of Q1, the negative pole of D5, the G pole of the third mose tube is connected to one end of R13, the other end of R13 is connected to the positive pole of the battery, the emitter of Q1, the positive pole of D5, the S pole of the third mose tube is grounded, and the third mose tube D The pole is connected to the first input terminal of the load and the positive pole of D2, and the other input terminal of the load and the negative pole of D2 are connected to the positive pole of the battery; The temperature detection module (7) includes resistors R1 and R5, one end of R1 is connected to the output end of the 7805 regulator tube, the other end is connected to one end of R5 and pin 1 of the single-chip microcomputer, and the other end of R5 is grounded; The battery voltage detection module (8) includes resistors R12, R6 and capacitor C5, one end of R12 is connected to the positive pole of the battery, the other end is connected to pin 2 of the microcontroller, one end of R6 and one end of C5, and the other end of R6 and C5 is grounded; The photovoltaic panel voltage detection module (9) includes resistors R8, R9, R17 and capacitor C5. One end of the resistor R8 is connected to the output end of the 7805 regulator tube, the other end of R8 is connected to pin 3 of the microcontroller, one end of R9, one end of R17, one end of C5, R9, The other end of R17 and C5 is grounded; Among them, the solar panel input module (3) is used for charging the battery module (1), and the IC working power module (2) is used for MCU main control module (4), PWM charging and anti-backflow switch module (5), temperature detection The module (7) and the photovoltaic panel voltage detection module (9) provide a stable voltage of 5V, the temperature detection module (7) is used to perform temperature compensation on the charging and discharging capacity of the battery capacity, and the battery voltage detection module (8) is used to detect the voltage of the battery signal, and send the voltage signal to the MCU main control module (4) to automatically adjust the load power, and cut off the charging circuit of the battery when the voltage of the battery is too high, and cut off the discharging circuit of the battery when the voltage of the battery is too low, and the voltage of the photovoltaic panel The detection module (9) is used to detect the applied voltage of the photovoltaic panel and send the voltage signal to the MCU main control module (4) to control the PWM charging and anti-backflow switch module (5) to cut off the battery when the applied voltage of the photovoltaic panel is too large the charging circuit. 2. The solar street lamp control circuit according to claim 1, characterized in that: the MCU main control module (4) further includes a TTL type communication connection socket CON1, the 11 pin of the PC317 chip is connected to an input pin of CON1, the PC317 chip Pin 12 is connected to the other input pin of CON1, the ground terminal of CON1 is grounded, and the three-plug output port of CON1 is used to plug in the communication cable.