LED solar lawn light technology principle

The solar lawn lamp mainly uses the energy of the solar cell to work. When daytime sunlight shines on the solar cell, the light energy is converted into electricity and stored in the battery, and then the battery is the LED of the lawn lamp in the evening (light emitting diode). ) Provide power. Its advantages are mainly safety, energy saving, convenience, and environmental protection. Applicable to the residential community green landscaping lighting embellishment, park lawn landscaping embellishment.

Structure of LED solar lawn light:

It consists of solar modules (photovoltaic panels), super bright LED lights (light sources), maintenance-free rechargeable batteries, automatic control circuits, and lamps.

LED solar lawn light system components:

The solar lawn lamp boost IC can automatically switch between charging and discharging behaviors. When the solar charging board senses sunlight during the day, it automatically switches to turn off the light and enters the charging state. When the night falls on the solar charging board, it can not automatically detect the sunlight. Turn on the light by entering the battery discharge state. The solar lawn boost IC can raise the output voltage of the 1.5 volt rechargeable battery to 3.6 volts.

A set of circuit board ICs shall be equipped with a No.5 rechargeable battery capable of driving 1--7 LED light emitting diodes; multiple sets of circuit board ICs and the like; integrated circuits of solar lawn light controllers and some peripheral components, The main functions include charging circuit, driving circuit, photosensitive control circuit and pulse width modulation circuit. The controller has high conversion efficiency: 80~85% (typical), which can reduce the power requirements of solar cell boards; low start-up voltage: 0.9V (maximum); adjustable output current and other characteristics.

LED solar lawn light source advantages:

At present, most lawn lamps use LED as a light source, and the LED has a long service life, can reach more than 100,000 hours, and has a low working voltage, and is very suitable for application to solar lawn lamps. In particular, LED technology has experienced its key breakthrough, and its characteristics have greatly improved in the past five years, and its performance to price ratio has also been greatly improved. In addition, the LED is powered by a low voltage DC power supply, and its light source control cost is low, making it possible to adjust the brightness and darkness, and frequent switching is possible without adversely affecting the performance of the LED. You can also easily control the color, change the distribution of light and create a dynamic illusion, so it is particularly suitable for solar lawn lights.

Solar lawn light source and power supply system design methods have been rapidly developed in recent years because of the unique advantages of solar lawn light. Lawn lamp power is small, mainly for the purpose of decoration, for the high mobility requirements, the difficulty of laying the circuit, the site requirements for high water resistance. These make lawn light powered by solar cells show many unprecedented advantages.