Features: TAO BMS
More than a BMS, it is an Energy Management System
- protects & manages batteries from 12 to 48 volt
- only 5 wires to connect per four cells stack and the BMS is operational
- measures each cell voltage and temperature
- 4 A active differential cell balancing based on open cell voltage
- 20 custom monitoring ranges (voltage, temperature, SOC) to trigger alarms and/or relay outputs
- 6 NO / NC isolated relay outputs to remote control external equipment or switching devices
- charge management to start and stop chargers on your terms
- integrated pre-charge commands for capacitive loads
- manages the connection of a backup battery when needed
- high precision current measure for accurate SOC estimation
- measures cell resistance and actual battery capacity to estimate a State of Health
- deported led and control panel with relay reset and emergency shutdown button
- ongoing self-diagnostics
- PC and Mac application to configure the BMS and monitor the battery
- fault simulation mode to validate configuration and proper operation of all connected equipment
Key Features
Dynamic differential cell balancing
- keeps cells voltage within a user defined voltage range at all time
- activated by a user defined voltage difference between cells (either measured voltage or open circuit voltage*)
- simultaneously discharges the cell with the highest voltage and charges the cell with the lowest voltage
- high efficiency energy transfer without any heat dissipation
- a total of 4 Amps balancing current
Measures
- battery voltage, current, temperature and internal resistance
- battery state of charge*
- battery state of health*
- battery measured capacity*
- power consumption
- number of charge cycles*
- cell voltage, temperature and resistance
20 custom voltage, temperature and SOC ranges (triggers)
- each range is fully programmable:
- minimum or maximum cell / battery measure
- can be based on differential measure between cells
- an event is triggered if a measure is outside a defined range
- can activate one or more relay output
- can activate one or more led on the control panel
- a separate value is used to reset the event (hysteresis)
- Integrated pre-charge management for capacitive loads
Charge cycle management*
- you set lower and upper limits for state of charge
- the chargers are disabled when the upper limit is reached and are enabled when the battery is discharged to the lower limit
- a full charge is enabled at regular intervals
Deported indicator panel
- green heart beat led for normal operation and balancing status
- combination of 4 led for warning and alarm events (red / yellow)
- 8 0dB buzzer with a “silence” push button
- relay outputs reset button
- emergency shutdown button to activate selected relay outputs
6 relay outputs
- relay outputs are “dry” contacts (no voltage / no polarity)
- each event trigger and the “emergency shutdown” button can activate zero, one or more relay outputs
- configurable time delay between an event trigger and the activation of relay outputs
- configurable time delay between relays if more than one relay are activated by one event
- each relay output is protected and can handle 2 Amps continuous (7 Amps for 0.5 second)
- each relay output can be set as Normally Open (NO) or Normally Closed (NC)
- compatible with most equipment to control their operation (chargers, converters….)
- Integrated pre-charge management for capacitive loads
Diagnostics & fault simulation
- comprehensive self-diagnostics performed at startup and every hour
- cell voltage and temperature simulation mode for system wide testing
- validate ranges and event trigger settings
- validate relay output configuration and wiring
- validate proper operation of equipment controlled by the relay outputs
Factory settings are good to go in most cases
- 10 preset ranges (triggers):
- warning level for voltage and temperature (high, low, cell differential)
- alarm (cutoff) level for voltage and temperature (high, low)
- 3 preset relay outputs:
- disconnect charge
- disconnect load
- isolate battery
- the emergency shutdown button activates all the relay outputs in a sequential manner
TAO BMS (12 volt base) includes:
- main unit in a 160 x 114 x 46 cm enclosure with:
- battery wire harness (four cell connectors, a fuse for each cell connection, and a ground)
- six relay outputs
- one connector for the remote indicator and control panel
- one connector for a current measuring shunt
- one connector for the computer or the TAO Monitor
- remote indicator and control panel (with a 10 meter cable)
- USB cord to connect a PC / Mac
- application BMS Config to program the BMS, monitor cell status and run diagnostics (Windows 10 / Mac 10.15 and above)
* requires the “BMS Shunt”
** for batteries above 12 volt, a “BMS Extension” is required for each additional 12 volt