Design Ideas and Points for Attention of Solar LED Street Light System

The design idea of u200bu200bsolar LED street lights can be based on the general solar power system. First, determine the power of the light source, the continuous working time per day, and ensure normal lighting on several cloudy and rainy days, and then calculate the corresponding battery capacity and solar cell component power. Solar LED street lights have their own particularities, and need to ensure the stability and reliability of the system, so special attention should be paid when designing.

　　1. 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 it is necessary Choose a module with a working voltage of 18V. Due to the particularity of solar LED street lights, solar panels are generally installed on light poles with a high center of gravity. Most of the solar panels are suspended, in order to enhance the wind resistance of the entire equipment. To select multiple solar panels to form the required module power;

　　2. When choosing a battery, it is necessary to consider the impact of discharge rate, temperature and depth of discharge on battery capacity. Therefore, we must choose deep-cycle solar LED street lamp special batteries. When the batteries are connected in parallel, it is necessary to consider the impact of the imbalance between the individual cells. Normally, the number of parallel groups should not exceed 4 groups;

　　3. The controller is the key component of the entire solar street light system as a manager. Its biggest function is to comprehensively manage the battery. A good controller can set various key parameter points according to the characteristics of the battery. , Such as battery overcharge point, overdischarge point, recovery connection point and SOC discharge control and so on. When choosing a street light controller, you need to pay special attention to the controller to restore the connection point parameters. If the controller parameters are not set properly, the lamps may flicker and shorten the service life of the battery and the light source;

　　4. At present, there are few light sources dedicated to solar street lights. In order to reduce the loss of limited energy, the light source should be DC light source as far as possible. And from the name, you can know that the light source of solar LED street light is LED semiconductor light source. LED light source is a multi-functional, environmentally friendly and energy-saving street light source, suitable for lighting in various occasions. The LED street light driver is a product developed specifically for solar LED street lights. The brightness of most domestic solar LED street light projects can meet the urban road lighting standards.