Dear Sir,
I have a question about the fuel gauge IC during charging.
During charging, the charge capacity obtained by integrating the current with time does not match the RM capacity.
In the data sheet, RM is a filtered parameter. Is there a coefficient for this filter?
I think the filter is the cause of the difference between the integrated value of current and RM.
fual gauge IC parameters during charging.xlsx
Best regards,
Chiaki Endo
Hi Andy,
The excel data sent yesterday is the data in the following blog post.
I don't know if the battery relaxing because it's from a TI blog post you told me.
You said "RM and FCC are updated", but why was the RM and FCC values suddenly updated with little or no charge current?
Also, in the excel data, the value of RM (cell: D3565) at the start of discharge and the value of dQ (cell: I6611) obtained by integrating current at the end of discharge are different.
Why did the SOC just transition from 1% to 0% at terminate voltage 3.0V despite different values?
Why doesn't the problem of shutting down at the terminate voltage of 3.0 V or more when the discharge is completed or the problem of jumping the SOC suddenly to 0% occur Even if there is a difference between the current integrated dQ and RM?
Further, immediately before the end of the discharge (cell rows: 6580 to 6584), the decrease in RM relative to dQ is large. (The value of RM is skipping.)
Please tell me about the cause.
Chiaki
