A charging control system for an electrified vehicle, the charging control system comprising:
- a thermal conditioning device powered by a high voltage system of the electrified vehicle and configured to thermally condition a high voltage battery system of the high voltage system;
- and
- a controller configured to detect a charging condition where a state of charge (SOC) of the high voltage battery system exceeds an SOC threshold and an ambient temperature is less than an ambient temperature threshold and, in response to detecting the charging condition:
- control the thermal conditioning device to thermally condition the high voltage battery system;
- control a charge current request for electrified vehicle supply equipment (EVSE) based on a load of the thermal conditioning device on the high voltage system;
- detect a spike condition where an abrupt power-off of the thermal conditioning device causes the charge current request to the EVSE to exceed limits for the high voltage battery system;
- and
- in response to detecting the spike condition, temporarily decrease the charge current request to the EVSE to prevent an overvoltage malfunction of the high voltage battery system.