Method and system for thermal management of a high voltage battery for a vehicle

An electric vehicle comprising:

• a traction battery;
• a temperature sensor for the traction battery;
• a thermal cycle connected to the traction battery and having a thermal source and a thermal sink;
• and
• a controller connected to the traction battery, the sensor, and the thermal cycle, the controller configured to (i) measure a traction battery temperature using the sensor, (ii) detect if the traction battery is connected to a charger and power source, (iii) charge the traction battery when the traction battery is connected to the charger and power source and a state of charge is less than a threshold, (iv) regulate the temperature of the traction battery to within a charging temperature range when the traction battery is connected to the charger and power source, (v) precondition the traction battery to a battery drive temperature when the ambient temperature is outside an environmental temperature range, and (vi) limit a vehicle power output when the traction battery temperature is outside an operating temperature range and the vehicle is operating.