1 Introduction
As an emerging green energy source, solar energy has been rapidly promoted and applied with its unparalleled advantages. As the fourth generation of new light sources, it has been effectively utilized in urban lighting, road lighting, courtyard lighting, indoor lighting and other fields of lighting and applications. Especially in remote and non-electric areas, solar lighting fixtures have wider application prospects. Most people think that energy-saving lamps can save 4/5 energy is a great initiative, but LEDs are even more energy-saving than energy-saving lamps, which is a great innovation in solid-state light sources.
In addition, LED also has the advantages of high light quality, basically no radiation, reliable and durable, and extremely low maintenance cost. It is a typical green lighting source. The successful development of super bright LED has greatly reduced the cost of solar lighting, so that it can reach or approach the cost of initial installation of power frequency AC lighting system, and has the advantages of environmental protection, easy installation, safe operation, economical and energy saving. LEDs have been increasingly used in the field of lighting due to their high light efficiency and low heat generation, and have shown a trend to replace traditional lighting sources.
In the western part of China, non-main road solar street lights and solar garden lights have gradually become scale. With the vigorous development of solar lamps, "green lighting" will become a trend. As one of the representatives, LED solar lawn light will also be promoted and applied vigorously. This article mainly introduces some of its knowledge and hopes to give you some inspiration.
2. Definition and structural composition of LED solar lawn light
The solar lawn lamp mainly uses the energy of the solar cell to work. When the daytime sunlight is irradiated on the solar cell, the light energy is converted into electric energy 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 grass landscaping lighting embellishment, park lawn landscaping embellishment. LED solar lawn lamp structure: consists of solar cell modules (photovoltaic panels), super bright LED lights (light source), maintenance-free rechargeable batteries, automatic control circuits, lamps and so on.
3. System composition, control principle and circuit principle of solar lawn lamp
3.1 System composition of solar lawn lights
LED Solar Lawn Light is an independent power generation system. It can independently convert solar energy into electrical energy and convert it into heat for lighting and decoration without the need for wire transmission. An independent photovoltaic system generally consists of three parts: solar cell components; charging and discharging controllers, inverters, test instruments and computer monitoring and other power electronics and batteries or other energy storage and auxiliary power generation equipment. The photovoltaic system has the following characteristics: no rotating parts, no noise; no air pollution, no discharge of waste water; no combustion process, no fuel required; simple maintenance, low maintenance cost; high reliability and stability; The solar cell has a long service life, and the life of the crystalline silicon solar cell can reach more than 25 years; it is easy to expand the scale of power generation as needed.
Figure 1: Several common LED solar lawn lights
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