The working principle of solar LED lawn light

solar LED lawn light

Definition of LED solar lawn light:

Solar lawn lights mainly use the energy of solar cells to work. When the sun shines on the solar cells during the day, the light energy is converted into electrical energy and stored in the battery, and then the battery is used as the LED (light emitting diode) of the lawn lamp at night. Its advantages are mainly safety, energy saving, convenience, environmental protection and so on. It is suitable for green grass beautification lighting decoration in residential communities, and park lawn beautification decoration.

The structure of LED solar lawn light:

It is composed of solar cell components (photoelectric panels), super bright LEDs (light sources), maintenance-free rechargeable batteries, automatic control circuits, casings, etc.

The system composition of LED solar lawn light:

The solar lawn light booster IC can automatically switch between charging and discharging. When the solar charging panel senses sunlight during the day, it automatically switches to turn off the LED and enters the charging state. When night falls, when the solar charging panel does not sense sunlight, it automatically switches to enter the battery discharge state to turn on the light. The solar lawn light boost IC can boost the output voltage of a 1.5 volt rechargeable battery to 3.6 volts.

A set of circuit board IC should be equipped with a AA rechargeable battery to drive 1–7 LED lamp beads; multiple sets of circuit board ICs and so on; the circuit of the solar lawn lamp controller and some peripheral components, the main functions include the charging circuit , drive circuit, photosensitive control circuit and pulse width modulation circuit, etc. The controller has the characteristics of high conversion efficiency: 80~85% (typical value), which can reduce the power requirements of the solar cell plate; low start-up voltage: 0.9V (maximum value); adjustable output current, etc.

The light source advantages of LED solar lawn lights:

At present, most lawn lamps use LED as the light source. The LED has a long lifespan, which can reach more than 100,000 hours, and has a low operating voltage, which is very suitable for use in solar lawn lamps. In particular, LED technology has experienced its key breakthrough, and its characteristics have greatly improved in the past 10 years, and its performance-to-price ratio has also greatly improved. In addition, the LED is powered by low-voltage DC, and its light source control cost is low, making it possible to adjust the light and shade and frequently switch on and off, and will not adversely affect the performance of the LED. It can also easily control the color, change the distribution of light, and create a dynamic illusion, so it is especially suitable for solar lawn lights.

The design method of solar lawn light source and power system has developed rapidly in recent years due to the unique advantages of solar lawn lights. The lawn lamp has low power and is mainly used for decoration purposes. It has high requirements for mobility, difficult cable laying, and high waterproof requirements. These make LED lawn lights powered by solar cells show many unprecedented advantages.

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