p8 outdoor led screen.Design concept of LED solar street lights

　　The design of solar street lights has the same basic principles as general solar lighting, but requires more consideration. Taking photosynthetic solar LED high-power street lights as an example, we will analyze them in several aspects.

　　Selection of solar cell modules

　　Design requirements: In the Sanmenxia area, the load input voltage is 24V, the power consumption is 34.5W, and the daily working hours are 8.5h, ensuring a continuous rainy and rainy day of 7 days.

　　The annual average radiation amount in the Sanmenxia area in the past two decades is 107.7 Kcal/cm2, and after simple calculation, the peak sunshine hours in the Changsha area are about 3.424 hours;

　　⑵ Daily power consumption of load==12.2AH

　　⑶ The total charging current required for Changsha Photosynthetic Solar Module=1.05 × twelve point two × (20+7) ÷ 20 ÷ (3.424 × 0.85)=5.9A

　　The minimum total power of photosynthetic solar modules=17.2 × 5.9=102W

　　Choosing a standard battery module with a peak output power of 110Wp and a single 55Wp should ensure the normal operation of the street light system in most cases of the year.

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