The battery charge monitoring system is the component responsible for determining the energy remaining in the battery. It provides information such as remaining battery capacity (mAh), state-of-charge (%), and battery voltage (mV). It minimises dependence on host processor and improves standby power.
Safety protections such as over/under-temperature, extra levels of over/under-voltage, discharge short circuit, charge overcurrent
Autonomously measures all cell voltages, integrated pack current and temperature every 1 second
Capacity Indication with advanced algorithms
Accurate battery State-Of-Health (SOH) enables accurate prediction of available capacity
Smart charging and adaptability
Feature
- Monitors up to Two Individual Cell Voltages and Temperatures
- Part of a Complete Low-Cost Solution for Battery Packs of up to 12 Series and One or More Parallel Cells (When Used With bq78PL114).
- Advanced PowerPump Balancing Technology Equalizes Cells in Li-Ion Battery Packs, Resulting in Longer Run Time and Cell Life.
- PowerPump Cell Balancing Transfers Charge From Cell to Cell During all Operating Conditions – No Wasteful Current Bleeding or Associated Heat Buildup.
- Unique PowerLAN Isolated Communications Technology Permits Simultaneous Measurement of All Individual Cell Voltages in a Series String.
- Low Current Consumption:
- <250 μA Active
- <35 μA Standby
- <1 μA Undervoltage Shutdown
- Connects Directly to Cells, No Resistive Dividers
- Internal LDO Regulator for Support Circuitry
- Ultrasmall Footprint, 3-mm × 3-mm
- Millivolt Measurement Resolution Using Delta-Sigma A/D Converter
- Self-Calibrating Time Base – No Crystal Required When Used With bq78PL114
- APPLICATIONS
- Uninterruptible Power Supplies (UPS)
- Portable Medical and Test Equipment
- Electric Bikes and Mild-EV Battery Packs
- Multicell Series Strings ≥ 5S
