SLUUAQ3A April 2016 – October 2022 BQ4050
The device can detect cell overvoltage in batteries and protect cells from damage by preventing further charging.
The protection detection threshold may be influenced by the temperature settings of the advanced charging algorithm and the measured temperature.
| Status | Condition | Action |
|---|---|---|
| Normal, ChargingStatus()[UT] or [LT] = 1 | Max cell voltage1..4 < COV:Threshold Low Temp | SafetyAlert()[COV] = 0 |
| Normal, ChargingStatus()[STL] or [STH] = 1 | Max cell voltage1..4 < COV:Threshold Standard Temp | |
| Normal, ChargingStatus()[RT] = 1 | Max cell voltage1..4 < COV:Threshold Rec Temp | |
| Normal, ChargingStatus()[HT] or [OT] = 1 | Max cell voltage1..4 < COV:Threshold High Temp | |
| Alert, ChargingStatus()[UT] or [LT] = 1 | Max cell voltage1..4 ≥ COV:Threshold Low Temp | SafetyAlert()[COV] = 1 BatteryStatus()[TCA] = 1 |
| Alert, ChargingStatus()[STL] or [STH] = 1 | Max cell voltage1..4 ≥ COV:Threshold Standard Temp | |
| Alert, ChargingStatus()[RT] = 1 | Max cell voltage1..4 ≥ COV:Threshold Rec Temp | |
| Alert, ChargingStatus()[HT] or [OT] = 1 | Max cell voltage1..4 ≥ COV:Threshold High Temp | |
| Trip, ChargingStatus()[UT] or [LT] = 1 | Max cell voltage1..4 ≥ COV:Threshold Low Temp for COV:Delay duration | SafetyAlert()[COV] = 0 SafetyStatus()[COV] = 1 BatteryStatus()[TCA] = 0 OperationStatus()[XCHG] = 1 |
| Trip, ChargingStatus()[STL] or [STH] = 1 | Max cell voltage1..4 ≥ COV:Threshold Standard Temp for COV:Delay duration | SafetyAlert()[COV]= 0 SafetyStatus()[COV] = 1 BatteryStatus()[TCA] = 0 OperationStatus()[XCHG] = 1 |
| Trip, ChargingStatus()[RT] = 1 | Max cell voltage1..4≥ COV:Threshold Rec Temp for COV:Delay duration | |
| Trip, ChargingStatus()[HT] or [OT] = 1 | Max cell voltage1..4 ≥ COV:Threshold High Temp for COV:Delay duration | |
| Recovery, ChargingStatus()[UT] or [LT] = 1 | SafetyStatus()[COV] = 1 AND Max cell voltage1..4 ≤ COV:Recovery Low Temp | SafetyStatus()[COV] = 0 BatteryStatus()[TCA] = 0 OperationStatus()[XCHG] = 0 |
| Recovery, ChargingStatus()[STL] or [STH] = 1 | SafetyStatus()[COV] = 1 AND Max cell voltage1..4 ≤ COV:Recovery Standard Temp | |
| Recovery, ChargingStatus()[RT] = 1 | SafetyStatus()[COV] = 1 AND Max cell voltage1..4 ≤ COV:Recovery Rec Temp | |
| Recovery, ChargingStatus()[HT] or [OT] = 1 | SafetyStatus()[COV] = 1 AND Max cell voltage1..4 ≤ COV:Recovery High Temp |