High pole lamp manufacturers all understand the truth that the emergence of solar street lamps plays an important role in the construction of new rural roads, which not only illuminates the roads in the countryside but also saves energy. Solar street lights have their particularities, and it is necessary to ensure the stability and reliability of the system, so special attention should be paid to the design. So, what is the design principle of rural solar street lights?

1. Solar street light controller

The controller is a key part of the entire solar street light system that acts as a manager. Its biggest function is to comprehensively manage the battery. A good controller should set various key parameter points according to the characteristics of the battery, such as the overcharge point of the battery. , over-discharge point, recovery connection point and SOC discharge control, etc. When choosing a solar street light controller, special attention should be paid to the parameters of the controller's recovery connection point. Since the battery has voltage self-recovery characteristics, when the battery is in an over-discharge state, the controller will cut off the load, and then the battery voltage will recover. If some parameters of the controller are If the point is not set properly, the lamps and lanterns may flicker and shorten the life of the battery and light source.

2. Solar cell modules

The voltage of the solar cell module will decrease with the increase of temperature. Due to the influence of high temperature, the voltage loss of the battery module is about 2V, and the voltage drop of the diode on the charging process controller is 0.7V, so the module with an operating voltage of 18V is selected. Due to the particularity of solar street lights, solar panels are generally installed on light poles. For street light poles, they are generally more than 5 meters away, with a high center of gravity, and most of the solar panels are suspended. To resist wind, generally choose multiple solar panels to form the required component power.

3. The choice of light source

The selection of the light source is the most critical step for solar street lamps. At present, there are few light sources dedicated to solar street lamps. In order to reduce the loss of limited energy, the light source should be DC light sources as much as possible. At present, the common light sources are DC energy-saving lamps, high-frequency induction lamps, low-pressure sodium lamps and LED light sources.

4. Battery (group)

When choosing a battery, it is necessary to consider the impact of the discharge rate on the battery capacity, the impact of temperature on the battery capacity, and the impact of the depth of discharge on the battery capacity. Therefore, a deep-cycle solar battery must be selected. When the battery is connected in parallel, it is necessary to consider the unbalanced effect of each single cell. Usually, the number of parallel groups should not exceed 4 groups.

       The above is about the design principle of rural solar street lamps. The design of solar street lamps needs to be scientific and reasonable. In addition to the above points, it is also necessary to consider the overall structure of the street lamps, especially the calculation of the wind resistance of solar street lamps and the design of urban roads. The overall aesthetics of the street light. In short, there are many factors that affect the performance of solar street lights, so I won't go into details. Some people often regard the sunshine time as the peak hours of solar energy when designing the solar street light system. In fact, this is not correct. instability. Only by mastering the detailed meteorological resources and usage conditions of the place of use, combined with practical experience and optimizing the system design, can the solar street light work normally.