SLUUDA0 April 2026 BQ27Z855
If [V_SOC_CHARGE] in Charging Configuration is set to '1', then a combination of the cell voltage level range and the device RSOC percentage range are considered to determine the state of charging.
The cell voltage range is categorized the same way as defined in Voltage Range:
The V-RSOC range and the state of the charge is determined by the formulas shown in the table below.
| Current Cell Voltage Range | RSOC Range | [DSG] | Charging State |
|---|---|---|---|
| CHV | Any RSOC range | 0 | High Voltage State ChargingStatus()[HV] = 1 |
| CHV | >= Charging SOC Mid − Charging SOC Hysteresis | 1 | High Voltage State ChargingStatus()[HV] = 1 |
| CHV | < Charging SOC Mid − Charging SOC Hysteresis | 1 | Medium Voltage State ChargingStatus()[MV] = 1 |
| CMV | >= Charging SOC High | 0 | High Voltage State ChargingStatus()[HV] = 1 |
| CMV | < Charging SOC High | 0 | Medium Voltage State ChargingStatus()[MV] = 1 |
| CMV | any RSOC range | 1 | Medium Voltage State ChargingStatus()[MV] = 1 |
| CLV | >= Charging SOC High | 0 | High Voltage State ChargingStatus()[HV] = 1 |
| CLV | < Charging SOC High and >= Charging SOC Mid | 0 | Medium Voltage State ChargingStatus()[MV] = 1 |
| CLV | < Charging SOC Mid | 0 | Low Voltage State ChargingStatus()[LV] = 1 |
| CLV | >= Charging SOC High − Charging SOC Hysteresis | 1 | Medium Voltage State ChargingStatus()[MV] = 1 |
| CLV | < Charging SOC High − Charging SOC Hysteresis | 1 | Low Voltage State ChargingStatus()[LV] = 1 |
The charging state matrix broken down by cell voltages and the RSOC ranges defined below:
[DSG] refers to the DSG bit in BatteryStatus(). This bit indicates the discharge direction: [DSG] = 1 when the battery is discharging (negative current), [DSG] = 0 when charging or at rest with positive current direction.
| [DSG] = 0 | [DSG] = 1 | |||||
|---|---|---|---|---|---|---|
| RSOC_High | RSOC_Mid | RSOC_Low | RSOC_High | RSOC_Mid | RSOC_Low | |
| CHV | [HV] | [HV] | [HV] | [HV] | [HV] | [MV] |
| CMV | [HV] | [MV] | [MV] | [MV] | [MV] | [MV] |
| CLV | [HV] | [MV] | [LV] | [MV] | [LV] | [LV] |