We provide professional knowledge to let you understand solar lighting system, including outdoor solar lighting system
Lighting has changed the way of life that people “work at sunrise and rest at sunset”, extending the space and time of human activities, and lighting has become an irreplaceable requirement in today’s modern lifestyle. Lighting is generally divided into two categories: natural lighting and artificial lighting. Natural lighting is limited by natural conditions, and […]
In photovoltaic power generation systems, especially photovoltaic lighting systems, the battery is in a deep discharge cycle every day. Usually, the depth of discharge is 25% to 35% every day and night. It is very important to detect and control the battery to avoid over-discharging. The discharge characteristic curve of lead-acid battery is shown in […]
Solar cell output power and fill factorThe output power of the solar battery is equal to the product of the current and voltage flowing through the battery, that is, according to the power definition formula P=UI, set P as a different constant, and substitute U and I to output the volt-ampere characteristic curve in the […]
Solar cells can be divided into crystalline thin-film type and amorphous thin-film type (hereinafter referred to as a-) according to their crystalline state, and the former is divided into single crystalline and polycrystalline. According to the material, it can be divided into silicon film, compound semiconductor film and organic film. The compound semiconductor film is […]
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 […]
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 […]
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 […]