BAC’s


Battery Analysis Care System


Systems

Overview

BACS is the most advanced product of its kind on the market today. An Ethernet integrated battery monitoring and management system, BACS uses web management technology to monitor the temperature, internal resistance and voltage of every single battery in a given system. In an Emergency Lighting critical standby application, the battery is by and large an integral part of the system, and can also be an unpredictable element of the design. Battery condition can be invisible and not determined from its appearance, making early diagnosis hard, especially if problems have been experienced in transit, storage, installation, poor site conditions or misuse, causing failure of just one cell which can lead to open-circuit of a complete battery.

The analysis part is the continuous checking of the internal resistance, temperature and voltage of every single battery block. The care part is an equalization process that corrects the charging voltage for each battery block, as well as constant monitoring and controlling. In addition, it can manage environmental measurements such as temperature, humidity etc., as well as the Static Inverter system. BACS effectively mitigates the possibility of overcharging the batteries, helping to prevent gassing and drying, as well as alleviating the possibility of undercharging, preventing sulfation. Through the equalization process, the batteries are kept at an optimal charging voltage and therefore, in an optimal state of health. By managing the batteries charging voltages, BACS vastly improves the durability and reliability of the system. The web browser interface of the system is designed for easy confguration, displaying all system values and events and alarms through a flexible event manager.

The BACS WebManager acts as the central control unit by gathering, evaluating and storing all information on its internal flash memory. This can log all system data for a duration of at least 6 months up to 3 years dependent on the size of the system. All data can be downloaded and archived over an ethernet network in order to free-up storage capacity for further data logging and analysis using the BACS Viewer software or other graphical programmes. Ventilux’s BACS system monitors key battery parameters and sets thresholds, therefore allowing advanced warnings, via audio, video and network messages, of a system event that requires attention.

Extended Battery Life

The service life of a battery string depends on the weakest cell of the weakest battery in a string. The BACS equalising process allows each of the batteries within a string to be maintained at optimal voltage levels, eliminating the ill effects of improper charging. The constant care provided by the equalising process has been shown to increase service life by more than 30%.

BAC’s Equalisation

Battery 1 is ideal.
Battery 2 has low impedance which results in under voltage condition and so this battery is boosted by BACS.
Battery 3 has high impedance which results in over voltage so the battery is prevented from over charging by  BACS.