Planner: charger soc not evaluated for offline vehicle

[andig]

From Slack: charger-provided soc (e.h. via EEbus) for otherwise offline vehicle is not taken into account for the planner.

Refs #19544, #19533

[DerAndereAndi]

Is there anything needed, e.g. logs, to fix this? Or maybe a hint on where to look for the issue?

[andig]

I think we need to support these cases:

Vehicle capacity	soc	Charger soc	Device	Expectation	Todo
n	n	n	offline vehicle	energy-based planning
n	n	y	heatpump	read charger soc
n	y	n	heatpump (deprecated)	read vehicle soc	Deprecation warning
n	y	y	heatpump (deprecated)	read charger then vehicle soc	Deprecation warning
y	n	n	offline vehicle	energy-based planning
y	n	y	offline vehicle with iso charger	read charger soc	this issue
y	y	n	regular vehicle	read vehicle soc
y	y	y	regular vehicle with iso charger	read charger then vehicle soc

Does this make sense?

Regarding #19533 we should also make sure to always read charger, the vehicle soc limits if existing.

/cc @premultiply

[andig]

@jerhaag I have some problems verifying that this issue still exists using a unit test. Could you help to better identify what doesn't work? Unfortunately I didn't catch any logs when documenting this.

[jerhaag]

@andig Sure, I can help. The issue is still present in v300.2. Vehicle SoC (Taycan) from EEBUS charger is not used in planner. Planner assumes car SoC is 0%.