Intelligent control circuit of solar lamp

Abstract

The utility model relates to the field of lighting lamp control circuits, in particular to an intelligent control circuit of a solar lamp. An intelligent control circuit of a solar lamp comprises a lithium battery, a solar panel, an AC-DC module, a DC-DC module and a control module. The control module comprises a diode D1, a lithium battery protection chip U1, a chip U2, resistors R1, R2, R3, R4, R5, R6 and R7, MOS transistors Q1 and Q2 and a chip U3. The anode of the diode D1 is connected with the anode S + of the solar panel, and the cathode of the diode D1 is connected with the anode of the lithium battery to charge the lithium battery; the third pin VCC end of the lithium battery protection chip U1 is connected in series with a resistor R5 and is connected to the positive electrode of the lithium battery; the second pin GND end of the lithium battery protection chip U1 is connected to the negative electrode of the lithium battery. The beneficial effects of the utility model are that the chip U2 detects the voltage of the lithium battery to determine the electric quantity, detects the voltage of the solar panel to determine the illumination condition, and controls the lamp.

Description

Technical Field

[0001] The utility model relates to the field of lighting fixture control circuits, and particularly to an intelligent control circuit for solar lamps. Background Art

[0002] With the global emphasis on environmental protection and sustainable development, solar energy, as a clean and renewable energy source, has attracted increasing attention. As a new type of new energy lighting method, solar lamps have developed rapidly and occupied a place in the lighting field. However, there is a fatal problem with current solar lamps on the market. In rainy and cloudy weather and environments with insufficient light, the charging efficiency of solar lamps is low, and the lighting time at night is short, unable to provide an ideal lighting time. To overcome the deficiencies of traditional solutions, it is necessary to study an intelligent control circuit for solar lamps that can achieve long-term lighting regardless of sunny or rainy days. Content of the Utility Model

[0003] The purpose of the utility model is to provide an intelligent control circuit for solar lamps to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] An intelligent control circuit for solar lamps includes: a lithium battery, a solar panel, an AC-DC module, a DC-DC module, and a control module;

[0006] The control module includes: diode D1, lithium battery protection chip U1, chip U2, resistors R1, R2, R3, R4, R5, R6, R7, MOS transistors Q1, Q2, and chip U3;

[0007] The positive electrode of diode D1 is connected to the positive electrode S+ of the solar panel, and the negative electrode of diode D1 is connected to the positive electrode of the lithium battery to charge the lithium battery; the 3-pin VCC terminal of lithium battery protection chip U1 is connected in series with resistor R5 to the positive electrode of the lithium battery; the 2-pin GND terminal of lithium battery protection chip U1 is connected to the negative electrode of the lithium battery; the 4-pin and 5-pin VM terminals of lithium battery protection chip U1 are grounded;

[0008] The IO3 terminal of the 4th pin of chip U2 is connected between the series-connected resistors R3 and R4 for detecting the voltage of the lithium battery; resistor R3 is connected to the positive pole of the lithium battery; resistor R4 is grounded; the IO4 terminal of the 5th pin of chip U2 is connected between the series-connected resistors R1 and R2 for detecting the voltage of the solar panel; resistor R1 is connected to the positive pole S+ of the solar panel; resistor R2 is grounded; the IO5 terminal of the 6th pin of chip U2 is connected to the G pin of MOS transistor Q2 through resistor R7; the IO6 terminal of the 7th pin of chip U2 is connected to the G pin of MOS transistor Q1 through resistor R6; the GND terminal of the 8th pin of chip U2 is grounded; the D pin of MOS transistor Q1 is connected to the negative pole GND-D of the DC-DC module; the S pin of MOS transistor Q1 is grounded; the D pin of MOS transistor Q2 is connected to the negative pole GND-A of the AC-DC module or serves as the input of the relay to control the AC-DC module through the relay; the S pin of MOS transistor Q2 is grounded;

[0009] Chip U3 is an LDO voltage regulator; the Vi terminal of chip U3 is connected to the positive pole of the lithium battery; the Vo terminal of chip U3 is connected to the VCC terminal of the 1st pin of chip U2; the G terminal of chip U3 is grounded.

[0010] As a further solution of the present utility model: the control module further includes: capacitor C1; capacitor C1 is connected to the GND terminal of the 2nd pin and the VCC terminal of the 3rd pin of the lithium battery protection chip U1.

[0011] As a further solution of the present utility model: the control module further includes: capacitor C2; capacitor C2 is connected to the Vi terminal and the G terminal of chip U3.

[0012] As a further solution of the present utility model: the control module further includes: capacitors C3, C4; one end of capacitor C3 is connected to the IO4 terminal of the 5th pin of chip U2, and the other end of capacitor C3 is grounded; one end of capacitor C4 is connected to the IO3 terminal of the 4th pin of chip U2, and the other end of capacitor C4 is grounded.

[0013] As a further solution of the present utility model: the control module further includes: capacitors C5, C6; one end of both capacitor C5 and capacitor C6 is connected to the VCC terminal of the 1st pin of chip U2; the other end of both capacitor C5 and capacitor C6 is connected to the GND terminal of the 8th pin of chip U2.

[0014] Compared with the prior art, the beneficial effects of the present utility model are: by detecting the voltage of the lithium battery with chip U2 to judge the power, and detecting the voltage of the solar panel to judge the illumination situation, the lamp is controlled. It can achieve long-time lighting whether it is sunny or rainy.

[0015] The IO3 terminal of the 4th pin of chip U2 detects the voltage of the lithium battery to judge the power of the lithium battery, and the IO4 terminal of the 5th pin of chip U2 detects the voltage of the solar panel to judge the illumination situation. For example, when the lamp is in the daytime and the illumination is sufficient, the IO5 and IO6 terminals output low levels to turn off the lamp.

[0016] For example, when the lighting fixture is in an environment with insufficient sunlight at night, if the lithium battery has sufficient power, the IO5 terminal outputs a low level, the IO6 terminal outputs a high level, Q1 is turned on, Q2 is turned off, the lighting fixture is turned on, and the lighting fixture is powered by the lithium battery.

[0017] For example, when the lighting fixture is in an environment with insufficient sunlight at night, if the lithium battery has insufficient power, the IO5 terminal outputs a high level, the IO6 terminal outputs a low level, Q1 is turned off, Q2 is turned on, the lighting fixture is turned on, and the lighting fixture is powered by the AC mains.

[0018] Other features and advantages of the present utility model will be disclosed in detail in the following specific embodiments and drawings. Description of the Drawings

[0019] Figure 1 is the circuit diagram of the control module of the intelligent control circuit of the solar lighting fixture according to the first embodiment of the present utility model;

[0020] Figure 2 is the circuit diagram of the AC-DC module and the DC-DC module of the intelligent control circuit of the solar lighting fixture according to the first embodiment of the present utility model;

[0021] Figure 3 is the circuit diagram of the part for adjusting the color temperature of the lighting fixture by DIP switch of the intelligent control circuit of the solar lighting fixture according to the first embodiment of the present utility model;

[0022] Figure 4 is the circuit diagram of the part for adjusting the power of the lighting fixture by DIP switch of the intelligent control circuit of the solar lighting fixture according to the first embodiment of the present utility model;

[0023] Figure 5 is the circuit diagram of the control module of the intelligent control circuit of the solar lighting fixture according to the second embodiment of the present utility model. Detailed Description of the Embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] Please refer to Figures 1 to 4 , as the first embodiment of the present utility model, an intelligent control circuit for a solar lighting fixture includes: a lithium battery, a solar panel, an AC-DC module, a DC-DC module, and a control module.

[0026] The control module includes: diode D1, lithium battery protection chip U1, chip U2, resistors R1, R2, R3, R4, R5, R6, R7, MOS transistors Q1, Q2, and chip U3.

[0027] The positive electrode of diode D1 is connected to the positive electrode S+ of the solar panel, and the negative electrode of diode D1 is connected to the positive electrode of the lithium battery to charge the lithium battery. The VCC terminal of the 3rd pin of lithium battery protection chip U1 is connected in series with resistor R5 to the positive electrode of the lithium battery. The GND terminal of the 2nd pin of lithium battery protection chip U1 is connected to the negative electrode of the lithium battery. The VM terminals of the 4th and 5th pins of lithium battery protection chip U1 are grounded.

[0028] The IO3 terminal of the 4th pin of chip U2 is connected between the series-connected resistors R3 and R4 to detect the voltage of the lithium battery. Resistor R3 is connected to the positive electrode of the lithium battery. Resistor R4 is grounded. The IO4 terminal of the 5th pin of chip U2 is connected between the series-connected resistors R1 and R2 to detect the voltage of the solar panel. Resistor R1 is connected to the positive electrode S+ of the solar panel. Resistor R2 is grounded. The IO5 terminal of the 6th pin of chip U2 is connected to the G pin of MOS transistor Q2 through resistor R7. The IO6 terminal of the 7th pin of chip U2 is connected to the G pin of MOS transistor Q1 through resistor R6. The GND terminal of the 8th pin of chip U2 is grounded. The D pin of MOS transistor Q1 is connected to the negative electrode GND-D of the DC-DC module. The S pin of MOS transistor Q1 is grounded. The D pin of MOS transistor Q2 is connected to the negative electrode GND-A of the AC-DC module. The S pin of MOS transistor Q2 is grounded.

[0029] Chip U3 is an LDO voltage regulator. The Vi terminal of chip U3 is connected to the positive electrode of the lithium battery. The Vo terminal of chip U3 is connected to the VCC terminal of the 1st pin of chip U2. The G terminal of chip U3 is grounded.

[0030] The IO3 terminal of the 4th pin of chip U2 detects the voltage of the lithium battery to judge the power of the lithium battery, and the IO4 terminal of the 5th pin of chip U2 detects the voltage of the solar panel to judge the lighting condition. For example, when the lamp is in the daytime with sufficient sunlight, the IO5 and IO6 terminals output low levels to turn off the lamp.

[0031] For example, when the lamp is in the evening with insufficient sunlight, if the lithium battery has sufficient power at this time, the IO5 terminal outputs a low level, the IO6 terminal outputs a high level, Q1 is turned on, Q2 is turned off, the lamp is turned on, and the lamp is powered by the lithium battery.

[0032] For example, when the lamp is in the evening with insufficient sunlight, if the lithium battery has insufficient power at this time, the IO5 terminal outputs a high level, the IO6 terminal outputs a low level, Q1 is turned off, Q2 is turned on, the lamp is turned on, and the lamp is powered by the AC mains.

[0033] As a further solution of the present utility model: the control module further includes: capacitor C1. Capacitor C1 is connected to the GND terminal and VCC terminal of the 2nd and 3rd pins of lithium battery protection chip U1.

[0034] As a further solution of the present utility model: The control module further includes: a capacitor C2. The capacitor C2 is connected to the Vi terminal and the G terminal of the chip U3.

[0035] As a further solution of the present utility model: The control module further includes: capacitors C3 and C4. One end of the capacitor C3 is connected to the 5th pin IO4 terminal of the chip U2, and the other end of the capacitor C3 is grounded. One end of the capacitor C4 is connected to the 4th pin IO3 terminal of the chip U2, and the other end of the capacitor C4 is grounded.

[0036] As a further solution of the present utility model: The control module further includes: capacitors C5 and C6. One ends of the capacitor C5 and the capacitor C6 are both connected to the 1st pin VCC terminal of the chip U2. The other ends of the capacitor C5 and the capacitor C6 are both connected to the 8th pin GND terminal of the chip U2.

[0037] For the lamp light source part, through the DIP switch SW1, the color temperature of the LED light source is switched: warm white / natural white / cool white. Through the DIP switch SW2, the brightness of the LED light source is switched (10% - 25% - 50% - 75% - 100%).

[0038] Please refer to Figure 5 , as the second embodiment of the present utility model, different from the first embodiment, the D pin of the MOS transistor Q2 is not connected to the negative electrode GND - A of the AC - DC module. The adopted method is that the D pin of the MOS transistor Q2 is used as the input of the relay to control the AC - DC module through the relay. The on - off of the live wire of the AC - DC module is controlled through the relay to realize the control of the lamp.

[0039] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above - mentioned exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, in any aspect, the embodiments should be regarded as exemplary and non - restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0040] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A solar lamp intelligent control circuit, characterized in that: include: Lithium batteries, solar panels, AC-DC modules, DC-DC modules and control modules; The control module includes: a diode D1, a lithium battery protection chip U1, a chip U2, resistors R1, R2, R3, R4, R5, R6, R7, MOS tubes Q1, Q2, and a chip U3; The positive electrode of the diode D1 is connected to the positive electrode S+ of the solar panel, and the negative electrode of the diode D1 is connected to the positive electrode of the lithium battery to charge the lithium battery; the 3-pin VCC terminal of the lithium battery protection chip U1 is connected in series with the resistor R5 to the positive electrode of the lithium battery; the 2-pin GND terminal of the lithium battery protection chip U1 is connected to the negative electrode of the lithium battery; the 4-pin and 5-pin VM terminals of the lithium battery protection chip U1 are grounded; The 4-pin IO3 end of the chip U2 is connected between the resistor R3 and the resistor R4 connected in series for detecting the voltage of the lithium battery; the resistor R3 is connected to the positive electrode of the lithium battery; the resistor R4 is grounded; the 5-pin IO4 end of the chip U2 is connected between the resistor R1 and the resistor R2 connected in series for detecting the voltage of the solar panel; the resistor R1 is connected to the positive electrode S+ of the solar panel; the resistor R2 is grounded; the 6-pin IO5 end of the chip U2 is connected to the G pin of the MOS tube Q2 through the resistor R7; the 7-pin IO6 end of the chip U2 is connected to the G pin of the MOS tube Q1 through the resistor R6; the 8-pin GND end of the chip U2 is grounded; the D pin of the MOS tube Q1 is connected to the negative electrode GND-D of the DC-DC module; the S pin of the MOS tube Q1 is grounded; the D pin of the MOS tube Q2 is connected to the negative electrode GND-A of the AC-DC module or is used as the input of the relay to control the AC-DC module through the relay; the S pin of the MOS tube Q2 is grounded; The chip U3 is an LDO voltage regulator; the Vi terminal of the chip U3 is connected to the positive electrode of the lithium battery; the Vo terminal of the chip U3 is connected to the VCC terminal of pin 1 of the chip U2; and the G terminal of the chip U3 is grounded.

2. The solar lamp intelligent control circuit according to claim 1, characterized in that: The control module further includes: a capacitor C1; the capacitor C1 is connected to the GND terminal of the 2nd pin and the VCC terminal of the 3rd pin of the lithium battery protection chip U1.

3. The solar lamp intelligent control circuit according to claim 1, characterized in that: The control module further includes: a capacitor C2; the capacitor C2 is connected to the Vi terminal and the G terminal of the chip U3.

4. The solar lamp intelligent control circuit according to claim 1, characterized in that: The control module also includes: capacitors C3 and C4; one end of the capacitor C3 is connected to the 5-pin IO4 end of the chip U2, and the other end of the capacitor C3 is grounded; one end of the capacitor C4 is connected to the 4-pin IO3 end of the chip U2, and the other end of the capacitor C4 is grounded.

5. The solar lamp intelligent control circuit according to claim 4, characterized in that: The control module further includes: capacitors C5 and C6; one end of the capacitor C5 and the capacitor C6 are both connected to the 1-pin VCC terminal of the chip U2; the other ends of the capacitor C5 and the capacitor C6 are both connected to the 8-pin GND terminal of the chip U2.

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