Introduction to solar street light engineering design

We already know the advantages of commercial power complementary solar street lights. When we want to study the key technologies of commercial complementary solar street lights in use, it is no longer about the conversion rate of solar panels and solar street light batteries. The most important question to address now is under what conditions commercial electricity should be converted and used. In the solar photovoltaic power generation and mains complementary lighting system, when the energy provided by the solar cell is not enough to drive the light source, this is the best time to fully turn on the mains. That is, it doesn't waste energy at will, and it can supply power to commercial power sources in situations where solar power can't support the price of solar landscape lights, thereby stopping lighting. This is not to say that the complementary lighting of commercial power can be switched at any time, so too frequent switching can easily damage the service life of solar street lights of commercial power. The utility model judges that the energy provided by the solar cell is not enough to drive the light source, and then checks the terminal voltage of the battery is the simplest and most effective method. Because the power of the light source is constant and the discharge current of the battery is constant, the state of the solar photovoltaic system, especially the amount of stored energy, can be reflected in the terminal voltage of the battery. For lead-acid batteries, 12V systems generally choose when the battery voltage drops to 11V, and when it gets dark, the street lights will be converted from solar photovoltaic power to commercial power. In the case of a 24V system, when the battery voltage drops to 22V, it will convert to commercial power.
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