Telco BMS - Telecom Battery Management System
VRLA type batteries, which are used for energy backup of infrastructure systems of telecom operators, are used in groups of 4x12V batteries in order to either take up less space or to increase or decrease the capacity modularly.
Since the 48V Rectifier systems that charge these battery groups make current / voltage limitation from a single branch, there may be current imbalances between parallel connected battery groups. This leads to a decrease in the total energy storage capacity of the backup system in total.
The purpose of the product's design is to control the charging currents of 2-8 battery groups separately and prevent the problems experienced during "parallel charging". In addition, since the voltage and current of each 12V battery in the system can also be monitored, the risk of charging batteries connected in series at excessive voltages is eliminated. Thanks to the "Active Balancing Circuits" in BCU modules, the voltages of four 12V batteries in the serial group can be balanced by "post charge active balancing" method.
Telco BMS Telco BMS System is designed in a modular architecture. Telco BMS Modular supports up to 8 battery groups. As the amount of battery group in the field increases, it is possible to increase the capacity by adding only BCU modules.
There is one MPC module in each field and contains the main algorithms of the system and provides communication with the outside world. On the front panel of the module; In addition to a 2x16 character LCD screen and a 4-button menu system, there is a USB-A port for USB Memory connection on the back, RS-485 port for connection to the field management system, dry contact alarm relay output for connection to the alarm system and Ethernet / RJ45 output for TCP/IP communication with central management server.
The BCU module, contains connections with the battery group. It is in continuous communication with MPC via serial BUS on it. The (-) end of the Rectifier and the (-) end of the battery group are connected to the Metric-8 Barrier type power connector on the back. BCU module carries out voltage and current control functions between these two ends.
Since the current and voltage characteristics of all batteries can be analyzed in the Telco BMS system, the malfunctions that may arise in the system can be predicted in advance and the central server connected via the Ethernet port in the MPC module is informed to the system with the TCP / IP protocol, and the related site is visited by taking the maintenance plan and the batteries that will cause problems are more It can be changed before it happens.