Analysis Of Solar LED Lawn Lamp Technology Principle

- Jul 12, 2019-

Definition of LED solar lawn lamp:

  Solar lawn lamp mainly USES the energy of solar cell to work. When the sunlight shines on the solar cell during the day, the light energy is converted into electricity and stored in the battery, which provides the LED (LED diode) of the lawn lamp with power at night. Its main advantages are safety, energy saving, convenience, environmental protection and so on. Suitable for residential community green grass landscape lighting ornament, park lawn landscape ornament.

LED solar lawn lamp structure composition:

  It is composed of solar cell module (photoelectric panel), ultra-bright LED lamp (light source), maintenance-free rechargeable battery, automatic control circuit and lamps.

LED solar lawn lamp system composition:

  Solar lawn lamp voltage boosting IC can automatically switch between charging and discharging behavior. When the solar charging panel senses sunlight during the day, it will automatically switch to turn off the light to enter charging state; when the solar charging panel cannot sense sunlight at night, it will automatically switch to battery discharging state to turn on the light. Solar lawn lamp voltage boost IC, can 1.5 volts of rechargeable battery output voltage to 3.6 volts.

  A set of circuit board IC should be equipped with a no. 5 rechargeable battery which can drive 1--7 LED leds; Multiple sets of circuit boards IC and so on; The integrated circuit of solar lawn lamp controller 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 value), which can reduce the power requirement of solar cell version; Low starting voltage: 0.9v (maximum); Adjustable output current and other characteristics.

LED solar lawn light source advantage:

  At present, most lawn lights choose LED as the light source. LED has a long life, which can reach more than 100,000 hours, and the working voltage is low, which is very suitable for solar lawn lights. LED technology, in particular, has undergone key breakthroughs, and its characteristics have been greatly improved in the past five years, and its performance-to-price ratio has been greatly improved. In addition, LED is powered by low-voltage dc, and its light source control cost is low, making it possible to adjust light and dark, frequent switching, and will not have adverse impact on the performance of LED. It can also easily control color, change the distribution of light, and generate dynamic illusions, so it is especially suitable for solar lawn lamps.

  Due to the unique advantages of solar lawn lamp, it has been developed rapidly in recent years. Lawn lamp power is small, mainly for the purpose of decoration, high requirements for mobility, difficult circuit laying, waterproof requirements for the site. These have given lawn lights powered by solar cells many unprecedented advantages.