SLUUCO9A April 2023 – November 2023 BQ28Z620
When the BQ28Z620 calculates battery state of health (SOH), the firmware uses the charge voltage and taper current from the battery specification, instead of the actual settings in the application.
SOH Charge Voltage and SOH Taper Current are needed for the DODatEOC calculation. For a simulation of SOH, the DOD0=DODatEOC, and DODatEOC is calculated with SOH Charge Voltage. SOH Taper Current is needed for DODFinal.
Class | Subclass | Name | Type | Min | Max | Default | Unit | Description |
---|---|---|---|---|---|---|---|---|
Gas Gauging | SOH | Charge Voltage | I2 | 0 | 32767 | 4420 | mV | Charge voltage specified in the battery cell data sheet for DOD estimation |
Gas Gauging | SOH | Taper Current | I2 | 0 | 32767 | 250 | mA | Taper current specified in the battery cell data sheet for DOD estimation |
The firmware and technical reference manual changes include Section 8.7, Section 15.6.13, and Chapter 16.