CN204795718U - Photovoltaic LED lamp circuit - Google Patents

Abstract

The utility model discloses a photovoltaic LED lamp circuit, including solar panel T, diode D1, battery E and lamps and lanterns H, diode D3's positive pole is connected to solar panel T's one end, and battery E's positive pole and diode D2's positive pole are connected to diode D3's negative pole, and inductance L1 and chip IC 1's pin 1, solar panel T's other end connecting resistance R2, resistance R3 and battery E's negative pole are connected to diode D2's negative pole. The utility model discloses photovoltaic LED lamp circuit structure is simple, components and parts are few, adopt wide band pulse width modulation chip AT9933 as control chip, and the integrated level is high, very big simplification the circuit volume, can reduce automatically and rise input voltage, reach the purpose of stable output, therefore the circuit has the advantage that output is stable, the cost of manufacture is low and energy-concerving and environment-protective.

Description

A photovoltaic LED lamp circuit

technical field

The utility model relates to an LED lamp, in particular to a photovoltaic LED lamp circuit.

Background technique

LED lights are widely used in various lighting facilities because of their long life, high luminous efficiency, safety and environmental protection, and convenient use, especially in line with the energy-saving, environmental protection, and environmental protection advocated in recent years. The facility has the advantages of no pollution, low cost, and environmental protection, and is widely loved by people. However, because the output voltage of solar panels is seriously affected by light, the current solar circuit will be equipped with complex voltage regulator modules, which not only increases the Cost, but also increases the static loss of the circuit.

Utility model content

The purpose of this utility model is to provide a photovoltaic LED lamp circuit with simple structure and various functions, so as to solve the problems raised in the above-mentioned background technology.

In order to achieve the above object, the utility model provides the following technical solutions:

A photovoltaic LED lamp circuit, including a solar panel T, a diode D1, a battery E and a lamp H, one end of the solar panel T is connected to the anode of a diode D3, the cathode of the diode D3 is connected to the positive pole of the battery E and the anode of the diode D2, and the diode The cathode of D2 is connected to the inductor L1 and the pin 1 of the chip IC1, the other end of the solar panel T is connected to the resistor R2, the resistor R3 and the negative pole of the battery E, and the other end of the resistor R2 is connected to the resistor R5, the cathode of the diode D1 and the MOS transistor Q1 The drain is grounded, the other end of the inductor L1 is connected to the resistor R1, the drain of the MOS transistor Q1 and the capacitor C1, the other end of the capacitor C1 is connected to the capacitor C2, the inductor L2 and the anode of the diode D1, and the other end of the resistor R1 is connected to the capacitor C2 The other end, the other end of the inductor L2 is connected to the capacitor C3 and the lamp H, the other end of the capacitor C3 is connected to the other end of the resistor R5, the resistor R6 and the other end of the lamp H, and the other end of the resistor R3 is connected to the resistor R4 and the pin of the chip IC1 3. The other end of resistor R4 is connected to capacitor C5 and resistor R7, the other end of resistor R7 is connected to the other end of resistor R6 and pin 6 of chip IC1, the other end of capacitor C5 is grounded, and pin 2 of chip IC1 is connected to MOS transistor Q1 pin 4 of the chip IC1 is grounded, pin 8 of the chip IC1 is connected to the capacitor C4, and the other end of the capacitor C4 is grounded.

As a preferred solution of the utility model: the model of the chip IC1 is AT9933.

As a preferred solution of the present utility model: the lamp H is an LED energy-saving lamp.

Compared with the prior art, the beneficial effect of the utility model is that the circuit structure of the photovoltaic LED lamp of the utility model is simple, and the components are few, and the broadband pulse width modulation chip AT9933 is used as the control chip, which has a high degree of integration and greatly simplifies the circuit The volume can automatically reduce and increase the input voltage to achieve the purpose of stable output, so the circuit has the advantages of stable output, low production cost, energy saving and environmental protection.

Description of drawings

Figure 1 is a circuit diagram of a photovoltaic LED lamp circuit.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Figure 1, a photovoltaic LED lamp circuit, including a solar panel T, a diode D1, a battery E and a lamp H, one end of the solar panel T is connected to the anode of the diode D3, and the cathode of the diode D3 is connected to the positive pole of the battery E and the diode The anode of D2, the cathode of diode D2 connect inductor L1 and pin 1 of chip IC1, the other end of solar panel T connects resistor R2, resistor R3 and the negative pole of battery E, the other end of resistor R2 connects resistor R5, the cathode of diode D1 The other end of the inductor L1 is connected to the resistor R1, the drain of the MOS transistor Q1 and the capacitor C1, the other end of the capacitor C1 is connected to the capacitor C2, the inductor L2 and the anode of the diode D1, and the other end of the resistor R1 One end is connected to the other end of capacitor C2, the other end of inductor L2 is connected to capacitor C3 and lamp H, the other end of capacitor C3 is connected to the other end of resistor R5, resistor R6 and the other end of lamp H, the other end of resistor R3 is connected to resistor R4 and The pin 3 of the chip IC1, the other end of the resistor R4 is connected to the capacitor C5 and the resistor R7, the other end of the resistor R7 is connected to the other end of the resistor R6 and the pin 6 of the chip IC1, the other end of the capacitor C5 is grounded, and the pin of the chip IC1 2 Connect the gate of the MOS transistor Q1, the pin 4 of the chip IC1 is grounded, the pin 8 of the chip IC1 is connected to the capacitor C4, and the other end of the capacitor C4 is grounded.

The model of chip IC1 is AT9933. The lamp H is an LED energy-saving lamp.

The working principle of the utility model is: when the sun is sufficient during the day, the solar panel T completes the photoelectric conversion and supplies power to the converted electric energy through the diode D3, and charges the storage battery E all the way for use at night or in rainy weather. When it is fully charged, its voltage is the same as the voltage of the solar panel, and it will stop charging. The diode D3 stops the reverse diode. AT9933 uses hysteresis current control to adjust the input and output currents. It has excellent immunity to input surges and does not require complex loops. Compensation and local components. Input and output current control also provide internal short-circuit and input low-voltage protection. The operation of the circuit is divided into two stages: power-on and discharge. When power-on, the power passes through diode D2, inductor L1, capacitor C1, and diode D1, resistor R2, chip IC1 detects the voltage of resistor R2 to judge whether the power-on is completed, and the discharge stage is carried out through capacitor C1, MOS tube Q1, resistor R5, LED energy-saving lamp H, capacitor C3 and inductor L2, because the voltage of capacitor C1 when power-on The left is positive and the right is negative, the current flows from the Q1 terminal, the diodes D1 and D2 are reversed, and the IC1 detects the voltage of the resistor R5 to judge whether the current reaches the preset value of the LED lamp. After reaching the driving current value, it will turn off Q1, L2, C3 and D1 It will continue to maintain the current and maintain the power of the LED lamp. The circuit structure is simple, the components are few, and the broadband pulse width modulation chip AT9933 is used as the control chip, which has a high degree of integration and greatly simplifies the circuit size. The utility model has the advantages of stability, low production cost, energy saving and environmental protection.

Claims (3)

1. a photovoltaic LED circuit for lamp, comprises solar panels T, diode D1, storage battery E and light fixture H, it is characterized in that, one end of described solar panels T connects the anode of diode D3, the negative electrode of diode D3 connects the positive pole of storage battery E and the anode of diode D2, the negative electrode of diode D2 connects the pin 1 of inductance L 1 and chip IC 1, the other end contact resistance R2 of solar panels T, the negative pole of resistance R3 and storage battery E, the other end contact resistance R5 of resistance R2, the negative electrode of diode D1 and the drain electrode of metal-oxide-semiconductor Q1 ground connection, the other end contact resistance R1 of inductance L 1, the drain electrode of metal-oxide-semiconductor Q1 and electric capacity C1, the other end of electric capacity C1 connects electric capacity C2, the anode of inductance L 2 and diode D1, the other end of resistance R1 connects the other end of electric capacity C2, the other end of inductance L 2 connects electric capacity C3 and light fixture H, the other end of the other end contact resistance R5 of electric capacity C3, the other end of resistance R6 and light fixture H, the other end contact resistance R4 of resistance R3 and the pin 3 of chip IC 1, the other end of resistance R4 connects electric capacity C5 and resistance R7, the other end of other end contact resistance R6 of resistance R7 and the pin 6 of chip IC 1, the other end ground connection of electric capacity C5, the pin 2 of chip IC 1 connects the grid of metal-oxide-semiconductor Q1, pin 4 ground connection of chip IC 1, the pin 8 of chip IC 1 connects electric capacity C4, the other end ground connection of electric capacity C4.

2. a kind of photovoltaic LED circuit for lamp according to claim 1, is characterized in that, the model of described chip IC 1 is AT9933.

3. a kind of photovoltaic LED circuit for lamp according to claim 1, is characterized in that, described light fixture H is LED electricity-saving lamp.