Are you sure? The fan is activated intermittently, maybe it wasn't needed. Actively cooling during charging is normal. My BMW also runs the fan from time to time, just like the PacHy.It is normal for the current state of the vehicle as all the new ones do it too. But the original software from release of the vehicle does not activate the fan during charging.
This is not right. You either read this data when the battery was almost full or your EVSE couldn't supply more than 12A.On my van with the original software, the OBCM charges the 355v battery at 378v and 5.8A during level 2 charging at 12A and without the fan (after 3hrs charging) the charge electronics runs at a stable 153f (67c) which normal for most computer systems.
The data I got from OBCM aligns with what we know about the car:
AC and HCP Request Environmental Parameters: AC Current While Charging: 28.40 A AC Voltage While Charging: 237.20 V HCP Vehicle Maximum AC Current Limit: 46.50 A HCP Charging Voltage Command: 400 V HCP Charging Current Command: 18.00 A EVSE AC Voltage Detected: AC OK EVSE AC Voltage is Under Minumum Voltage Limit: Not valid EVSE AC Voltage is Over Maximum Voltage Limit: Not valid Battery HV Environmental Parameters: OBCM Output Current: 18.40 A OBCM Output Voltage: 352.80 V Vehicle Maximum DC Current Limit: 20.75 A
Where did you see 450A? The statistics max out at >180A, the maximum possible current should be under 250ANow the HV Battery can charge at 80kW (225A @ 355v) during regen and discharge at 160kW (450A @ 355v) so its impossible for me to see why the fuss over 5.8A flow during charging? Even after a hard sprint the fan doesnt come on when its driving unless the ICE needs it.
These high current bursts are short and the battery has enough thermal inertia to absorb them. And for all we know, the battery is always cooled, but when the car is moving the fan isn't needed.