Voltstore are a premier distributor in the UK of the patented BACS® „Battery Analysis and Care System“ periodically checks the internal resistance, temperature and voltage of each individual battery. In addition, it can regulate the loading charge of each battery and monitor the ambient conditions (temperature, air humidity, external alarms, hydrogen gas content and so on) and the different loads (UPS, inverters and other devices). The constant monitoring and controlling of the individual charging voltages for each battery will ensure the availability of the battery at all times and it will notify the user immediately of the quality of the battery being used in comparison to each other. The GENEREX Patented “Equalisation” function harmonizes the individual battery voltages in the strings and therefore avoids overcharges or undercharges which results in a longer lifespan of the complete battery system. BACS Web-manager calculates constantly the reference value of the charging voltage, ensuring every battery has the correct overall voltage. If any battery deviates from the average charging voltage the BACS WEBMANAGER sends a correction command to the specific BACS module to manage this battery. This individual charging/discharging of batteries is our patented “Equalisation” process.
Equalisation
• Brings over and under-charged batteries to a balanced voltage level.
• Provides the ideal utilisation of the battery capacity (up to 18% more capacity) and increases the lifespan.
Individual cell voltage measurement
• To determine the imbalance between cells in a battery string to provide additional information that a potential cell is failing
String and battery voltage measurement
• Provides an early indication that the cell is failing
• Battery String Current shows differences between the strings during the charge and discharge phase
Individual impedance measurement
• A major indicator for trending the performance of a cell for failure
Individual cell temperature measurement
• Mapping out the heat of the battery
• Essential in the detection of potential thermal runaway
• Important when cells are installed in a battery cabinet
• Auto switch off of Power breaker
Progressive “alarm” management
• Fully programmable for key parameters that indicate an issue needs to be addressed
• Settings on: Voltage, Temperature and Impedance.
History Trending and Performance Analysis
• Provides user with historical information to review performance of the cells
• Trending of impedance data over time can be vital in detecting a failing cell
Discharge and recharge performance data
• Float and discharge current measurements per string
• Different current values between strings can indicate failing cells
• Storage of cell information during a discharge for view later
Innovative technology
• GENEREX is the first to introduce the Equalisation process for batteries, based on an auto-adaptive control logic which was patented in 2004.
Safety
• GENEREX BACS products are the only battery management system within the market which is fuse protected. Through the power cables fuses allow the system to automatically disconnect the measuring sensor from the battery in case of overheating or other massive failures of a battery and is therefore the only BMS sensor which is can be installed in hazardous locations. Additionally all BACS sensors are coated against corrosive situations and are designed to work in industrial applications.
Individual battery voltage measurement; during float
• To determine the imbalance between an battery in a battery string to provide additional information that a potential battery is failing
Individual battery voltage measurement; during a discharge
• To determine a potential battery that is failing
String and battery voltage measurement
• Provides an early indication that the battery is failing
• Battery String Current shows differences between the strings during charge and discharge phase
Individual impedance measurement
• A major indicator for trending the performance of a battery for failure
Individual battery temperature measurement
• Mapping out the heat of the battery
• Essential in the detection of potential thermal runaway
• Important when cells are installed in a battery cabinet
Additional key areas that are monitored
• Equalisation voltage of all individual batteries
• Discharge and Re-charge current
• Ambient and Humidity measurement
• Additional sensors for measuring (environmental situations ie. what is the fuel level in the generator and can I switch this on remotely - “Yes”)
All the above measurement points have pre-programmed levels that if any of these monitored points exceed pre-determined limits, the BACS system creates an alarm alert condition. This information will be stored in Log register and then communicated via a pre-set of communication methods.
Equalisation of voltages within a Battery string
The BACS system uses an „auto-adaptive“ control process to provide individual charging and discharging voltage of every battery within the battery system. The BACS Web-manager (control unit) collects the voltages of every single battery via the communication bus and sets a target voltage level for every battery. The BACS modules will now cooperate to equalise the voltage of all batterys to reach this final target level at the same time, not leaving any battery behind or allow batterys to drift beyond tolerate voltage thresholds. That means if an battery with higher impedance tries to hoist the voltage at the on-going charging current, the BACS module activates a bypass and through this, redirects the charging current from this battery to others which may require extra charge. Thus the voltage of this battery remains constant around this set point and will follow in any change as soon as the central unit alters this set point. Through this optimized charging of each battery via the BACS „Equalisation“ process, full charge level of every battery in the battery string is archived, which results in a up to 18% high battery capacity compared with non-Equalized system.
Furthermore it avoids that a single battery will be overcharged (avoids gassing or dry out) or undercharged. Due to the above mentioned “care” charging of the battery, a dramatic higher service life and reliability is possible. The charging difference, until a replacement is possible, will be fully balanced through the BACS „Equalisation“ process.
Alarm Alert Systems
The system can be configured to raise alarms when key parameters both early warning or risk levels are reached. These alarms will be logged with all the data and routed via the network, email, SMS, SNMP or RCCMD or (optional) modem, Profibus and Lonbus. The alarm system provides an audible sound via a local buzzer and an Alarm LED plus dry contacts for external interfaces. Alarms are also readable in the MODBUS format at one of the serial interfaces and/or over MODBUS over IP.
GENEREX‘s BACS® (Battery Analysis
& Care System) is the most advanced product of its
kind on the market today.
The BACS WEBMANAGER is the main control unit of the BACS system
Founded in 1990 with Over 9 million active licenses
Battery swap-out.
New battery installations.
Suite 7B
Canterbury Business Centre
Ashchurch Road
Tewkesbury
Gloucestershire
GL20 8BT
Email: info@voltstore.co.uk
Phone: +44 (0)1684 210603