We provide professional knowledge to let you understand solar lighting system, including outdoor solar lighting system
Because the materials and processes used to produce solar cells are very different, the structures of solar cells are also diverse. The structure of a typical single-product silicon solar cell is shown in Figure 1 . The base material used is high-purity N-type and P-type single-product silicon rods. After cutting, grinding, polishing and other processes, […]
The solar cell can be simplified as a large-area PN junction composed of silicon material, which is formed by directly combining a layer of P-type crystalline silicon and a layer of N-type crystalline silicon. In actual operation, the PN junction of a crystalline silicon solar cell is formed by the diffusion of N-type dopant atoms […]
In an isolated atom, the electrons outside the nucleus are arranged in a certain shell, and each shell contains a certain number of electrons. The electrons on each shell have discrete energy values, that is, the electrons are distributed according to energy levels. For the sake of brevity, on the graph showing the level of […]
Basic knowledge of semiconductorsAccording to the electrical conductivity of objects, natural substances can be divided into three categories: conductors, insulators and semiconductors. Generally, substances with a resistivity of less than 10-4Ω. cm are called conductors, and mainly metal materials such as gold, silver, copper, iron, etc. are good conductors. Substances with a resistivity greater than […]
First of all, let’s first understand what a solar LED lighting system is?The solar LED lighting system is composed of solar cell components (including brackets), LED lamp holders, control boxes (with controllers and batteries) and light poles; the luminous efficiency of solar panels reaches 127Wp/m2, and the efficiency is high. The wind-resistant design of the […]
Solar power system installation After the solar power generation system is designed and manufactured, it must be transported to the site for installation. During transportation, all parts must be properly packaged. Fragile items such as components should be shipped in wooden boxes to avoid damage. The battery cannot be dumped to prevent electrolyte overflow (except […]
Charge and discharge control of accumulator in solar lamps Regardless of the size of the solar lamp, a good performance charge and discharge control circuit is essential. In order to prolong the service life of the battery, its charging and discharging conditions must be restricted to prevent the battery from overcharging and deep discharge. In […]
External characteristics of solar cells From the application point of view, the main concern is the external characteristics of the solar cell. First of all, for a monolithic solar cell, it is a PN junction. In addition to generating electricity when sunlight shines on it, it also has all the characteristics of a PN junction. […]
Green lighting from PN junction to PN junctionSolar cells are developing at an alarming rate that is unexpected. According to conservative estimates of scientists, in the next 10 years, the average conversion efficiency of solar cells will reach more than 25%, and the price will drop by about 2/3. In the future, a large part […]
Introduction to photovoltaic power generationScientists have been studying photovoltaic power generation for two centuries. In 1839, French scientist AE Becquerel (AE Becquerel) discovered that light can make a voltaic cell with two pieces of metal immersed in the electrolyte to generate additional potential. This phenomenon was later called the “photovoltaic effect” (photovoltaic effect). effect)”, referred […]