SLUUC54 User guide

SLUUC54C February 2020 – March 2024 BQ27Z558 , BQ27Z561 , BQ27Z561-R2

9.3.1 RelativeStateofCharge() Range

If [SOC_CHARGE] in Charging Configuration is set, then the voltage-based threshold control, as described in Section 9.3, is replaced with RelativeStateOfCharge() control.

With this method, the following changes in the control transitions occur:

[LV] state and RelativeStateOfCharge() > Charging SOC Mid; move to [MV].
[MV] state and RelativeStateOfCharge() > Charging SOC High; move to [HV].
[MV] state [DSG] = 1, and RelativeStateOfCharge() < Charging SOC Mid – SOC Hysteresis;
move to [LV].
[HV] state [DSG] = 1, and RelativeStateOfCharge() < Charging SOC High – Charging SOC Hysteresis; move to [MV].

Table 9-1 RelativeStateofCharge() Range

Class	Subclass	Name	Type	Max Value	Default Value	Unit
Advanced Charge Algorithm	SOC Range	Charging SOC Mid	U1	100	50	%
Advanced Charge Algorithm	SOC Range	Charging SOC High	U1	100	75	%
Advanced Charge Algorithm	SOC Range	Charging SOC Hysteresis	U1	100	1	%