SLUUCP8 June 2024 BQ41Z50
The BQ41Z50 device can detect cell undervoltage in batteries and protect cells from damage by preventing further discharge. The protection is compensated by the Current() × cell resistance1..4.
Status | Condition | Action |
---|---|---|
Normal | Min cell voltage1..4 – Current() × cell resistance > CUVC: Threshold | SafetyAlert()[CUVC] = 0 BatteryStatus()[TDA] = 0 |
Alert | Min cell voltage1..4 – Current() × cell resistance ≤ CUVC: Threshold | SafetyAlert()[CUVC] = 1 BatteryStatus()[TDA] = 1 |
Trip | Min cell voltage1..4 – Current() × cell resistance ≤ CUVC: Threshold for CUVC:Delay duration | SafetyAlert()[CUVC] = 0 SafetyStatus()[CUVC] = 1 BatteryStatus()[FD] = 1, [TDA] = 0 OperationStatus()[XDSG] = 1 |
Recovery | Condition 1: SafetyAlert()[CUVC] = 1 AND Min cell voltage1..4 – Current() × cell resistance > CUVC: Recovery AND Protection Configuration[CUV_RECOV_CHG] = 0 | SafetyStatus()[CUVC] = 0 BatteryStatus()[FD] = 0, [TDA] = 0 OperationStatus()[XDSG] = 0 |
OR Condition 2: SafetyAlert()[CUVC] = 1 AND Min cell voltage1..4 – Current() × cell resistance > CUVC: Recovery AND Protection Configuration[CUV_RECOV_CHG] = 1 AND PACK voltage > Charger Present Threshold |