Detailed explanation of battery work in LED street lamp accessories

The battery accessories of solar LED street lamps must be paid attention to because they are batteries. Without this battery, solar LED street lamps will not be able to utilize the absorbed and converted electric energy, solar LED street lamps are usually powered by batteries, and batteries have some characteristics to consider: 1. Batteries have only several specifications of voltage, 12V is common in use, 24V requires two series connections, and 36V is even less common. For this reason, the boost type constant current drive module is often needed in the solar LED street lamp, which affects the efficiency of the constant current module; 2. Another problem to be considered in solar LED street lamps is the change of input voltage. For the output power and efficiency of constant current source, in order to obtain high efficiency, it is necessary to keep the ratio of input and output voltages as close as possible, but if the input voltage is unstable. Then it is difficult to maintain a good state of high efficiency. The solar LED street lamp system usually uses the battery as the energy storage unit, and the voltage of the battery will change greatly when it is just fully charged and quickly discharged. Usually this change is more than 30. For example, for a 12V battery, its output voltage can be from 14. 8V to 10. Change between 8 V. Of course, for the constant current module, such changes are completely tolerable. That is, it can completely keep its output current constant within such a large variation range. But there is also a price, that is, you can't work in a good state. The so-called good state refers to the state with high efficiency or high output power. For constant current modules, whether boost or Buck, the efficiency is high only when the output voltage is close to the input voltage. Usually the output voltage is determined by the load and seldom changes. Therefore, when the input voltage changes within a range, its efficiency also changes. In order to ensure that you can work in bad situations, you can't work in a good state! Only when the voltage is connected close can a good utilization rate be achieved, and the voltage must be controlled within a certain range to ensure the stability of its use.