High power LED solar lighting system related circuit design

High-power LED solar lighting system by solar energy silicon light panels convert solar energy to electrical energy stored in the sealed lead-acid battery, the battery to provide electricity for the entire system. In this paper, for the purpose of practical application, from meet the requirements of the use of road lighting and landscape lighting, high-power LED solar lighting system related circuit for the design, the system has perfect sealed lead acid battery charge and discharge management function, the LED constant current drive, system related parameter display and corresponding over voltage, over current protection function. Keywords: LED solar lighting system introduction semiconductor lighting as a green lighting technology, has small volume, low energy consumption, the use of safe, long life and other characteristics, the life of about 20 ~ 30 times of incandescent lamp, fluorescent lamp 10 times, referred to as the 'diamond' of energy saving and environmental protection. Solar lighting system by solar energy, and each solar lighting systems are independent, embed cables in installation, excavation road, save a lot of cost, also prevent because of the safety hidden danger of the wire aging. So using high power LED solar lighting system will greatly save the electricity and maintenance costs. In this paper, for the purpose of practical application, the design meet the requirements of the use of road lighting and landscape lighting circuit part of the high power LED solar lighting system, the system has perfect sealed lead acid battery charge and discharge management function, the LED constant current drive, system related parameter display and corresponding over voltage, over current protection function. High power LED solar lighting system, the charging circuit 1. 1 sealed lead-acid battery charging features lead-acid batteries due to its low manufacturing cost, large capacity, low cost and has been widely used. But, if use undeserved, it will shorten the service life. American scientists mas to open the battery charging process to make a lot of experimental research, and put forward on the premise of the lowest outgassing rate, acceptable battery charging curve, as shown in figure 1. The experimental results show that if the charging current according to the curve changes, can greatly shorten the charging time, and has no effect on battery capacity and life also. Call this curve best charging curve in principle, which is the foundation for the research direction of fast charging method. As an important component of the high power LED solar lighting system sealed lead-acid battery charging control is extremely important, charging control circuit is the key of the system circuit. Therefore, in order to make the battery work in the best condition to obtain maximum life, must make the performance of the charging control circuit conform to the requirements of the sealed lead-acid battery charge.

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