A Simple Battery Management System for Solar Powered Triangle Communication Tower

Telecommunication towers provide reliable communication services, facilitate economic growth, and enhance social development. However, remote, isolated, and underdeveloped areas often need help establishing and maintaining a power supply infrastructure for telecommunication equipment. A monitoring system supports the energy required for operating a telecommunication tower. In order to overcome the problem of monitoring solar power supplies in areas that are difficult to reach, an IoT platform is needed for remote monitoring and security of solar power supplies. The IoT platform has been designed to monitor battery voltage, charging current, battery discharge current and battery capacity status. The current and voltage sensor reading data during the charging and discharging process is used to predict the SoC of the battery as the basis for the operation of the relay disconnecting PV resources or loads. The battery management system consists of two cut off relay, which the cut-off relay #1 for charging and the cut-off relay #2 for discharging. The battery charge and discharge management system is expected to overcome the problem of a short VLRA battery lifetime.