Selection of battery accessories in the design of solar LED street lights

When designing solar LED street lights, you must fully consider the characteristics of its various accessories. Reasonable design can ensure that the product can operate stably and reliably, but also minimize the cost, so as to achieve the best economic benefits. Here, Changhui solar street lights The manufacturer introduced the selection of battery accessories.

　　The batteries used in solar power generation systems belong to the form of cyclic work, but their working conditions are different from the working conditions of batteries used in other occasions. The main differences can be summarized as follows:

　　1. Both the charging rate and the discharging rate are very small;

　　2. Due to the limitation of natural resources, the battery can only be charged when there is sunlight, that is, the charging time is limited;

　　3. The battery cannot be charged according to the given charging rules. Because the battery is used in this special environment, its service life is shorter than expected. Generally, it can only be used for 1-2 years. The most vulnerable link in the entire solar LED street light system.

　　 Based on the use characteristics of batteries in solar power generation systems, high-quality lead-acid maintenance-free batteries must be selected when choosing batteries. For example, solar LED street lights need to be used at low temperatures. Gel batteries are recommended.

　　 In actual use, the charging and discharging current of the battery is small, which may cause the battery to be unable to be fully charged after discharge. Therefore, the lower limit voltage of battery discharge should be higher than other applications. It is more appropriate to set it to 11.5～12V. The depth of discharge should not exceed 60% of the battery capacity. In order to avoid overcharge and overdischarge, the charge and discharge control is in progress. It is best to add temperature compensation control.