Formula for calculating solar street light configuration

 The configuration calculation of solar street lights involves multiple factors, including solar panels, batteries, lamps, etc. The following are detailed calculation formulas and steps:

1. Current calculation Current = total power ÷ voltage For example, a 30W lamp in a 12V system, current = 30W ÷ 12V = 2.5A.

2. Battery capacity calculation Battery capacity = (lamp power × working time) ÷ (storage days × discharge depth) For example, a lamp works for 7 hours every night, is stored for 5 consecutive rainy days, and the discharge depth is 50%, then the battery capacity = (30W × 7 hours) ÷ (5 days × 50%) = 210Ah.

3. Calculation of solar panel capacity Solar panel capacity = (lamp power × working time) ÷ (peak sunshine hours × voltage) For example, if a lamp works for 7 hours every night, the peak sunshine hours are 4.5 hours, and the voltage is 17.4V, then the solar panel capacity = (30W × 7 hours) ÷ (4.5 hours × 17.4V) = 162W.

4. Controller and light pole design The selection of the controller should take into account functions such as light control, time control, overcharge and over-discharge protection. The design of the light pole should consider wind resistance. The height of the light pole is generally not more than 12m, and the light pole type is mostly steel conical light pole.

5. Tilt design In order to maximize the solar radiation energy received by the solar street light battery module throughout the year, it is necessary to select an optimal tilt angle for the solar cell module.

6. Wind resistance In the solar street light series, a very important issue in structural design is the wind resistance design. The wind resistance design is mainly divided into two parts: the wind resistance of the battery component bracket and the wind resistance of the light pole.

Through the above formulas and steps, the configuration of solar street lights can be calculated to ensure their performance and reliability in various environments.