Sunfree Lighting Limited is a high-tech manufacturer specialized in R&D and production of solar led street light

Solar energy lawn lamp the choice of main parts

by:SUNFREE     2021-01-30
A complete solar energy lawn lamp system includes: light, controller, battery, solar energy battery components and light body. LED lights factory it is a solid cold light source, green pollution-free, less power consumption, high photosynthetic efficiency, long life, therefore, the LED street lamp will become the choice of road lighting energy saving transformation. LED street lamp which is a kind of based on semiconductor PN junction formation with a weak electricity can glowing efficient solid-state light source, in certain positive bias voltage and the electrical flow injection, injection of holes and injection P N the electronic after spread to have source area by the radiative recombination and emit photons, convert electrical energy directly into light energy. During the day, solar modules convert light energy into electrical energy, and store it in the battery by the controller. LED street lamp which is a kind of based on semiconductor PN junction formation with a weak electricity can glowing efficient solid-state light source, in certain positive bias voltage and the electrical flow injection, injection of holes and injection P N the electronic after spread to have source area by the radiative recombination and emit photons, convert electrical energy directly into light energy. At night, the battery through the controller to provide light source, is transformed into light energy and lighting decoration. Lamp body is mainly have the effect of system protection and decoration in the day, ensure the normal operation of the cycle. Light, controller and batteries are key determinants of lawn lamp system performance. Must be optimized in design and reasonable configuration. Choose

the light source because of the limitation of solar lawn lamp by module power light source power must be very small, from zero to a few watts, and more. 5 w and 1 w. At present, some solar energy lawn lamp using energy-saving lamp as light source, the ordinary energy-saving lamps of photosynthetic efficiency of about 40 & times; 50 l m/w, and the LED luminous efficiency has reached 90 l/w, laboratory high 120 Lm/w, under the same intensity of illumination, LED lights than ordinary fluorescent lamp energy saving more than 40%, conversion efficiency is higher. In addition, the service life of the common fluorescent lamp is 3000 & plusmn; 5000 H, when the light attenuation reached 70%, the theory of life of LED lamp is about 100000 H, the actual service life of up to 50000 H, is 10 times more than ordinary fluorescent lamps. If you work eight hours a day, 6250 days a lamp can be used, so it often does not need to change, it can greatly save maintenance cost. Leds are called green lighting light source, it itself does not contain toxic and harmful substances ( Such as mercury) 。 To avoid the fluorescent tube rupture secondary pollution of mercury. At the same time, the LED lamp adopts constant dc current drive, no stroboscopic phenomenon, not on the radiation interference, no harm to human body. Color index above 80, objects in the color of light more real, more rich color. Therefore, the LED is very suitable for solar energy lawn lamp system. Leds is important problems in the application of constant current and heat dissipation. Although the LED has been used in many solar lawn lamp, but these problems are not very good.
in the applications of high power LED, heat dissipation is another key factor. If heat dissipation is not good, will lead to serious droop. Some serious half year could fall to half of their original cost. On the lawn lamp, high power LED is mostly a single application can satisfy the traditional aluminum plate. Effect usually is small, but need to be validated through the experiment.

the choice of battery in recent years, the market of solar energy lawn lamp is generally composed of lead-acid battery or nickel metal hydride batteries and LED lights. In use process, lead-acid battery acid rehydration is required, this requires a lot of maintenance work. At the same time, when the sulfuric acid electrolyte overflow, may damage the light body or other public facilities. Lead-acid battery and smaller than the energy of nimh batteries. For commonly used 4 ah battery, the volume and weight is very big. System installation of electrical components and installation takes up a lot of space, is not conducive to lamps and lanterns of the structure of the flexible design.

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