Architecture for battery self heating

An automotive vehicle, comprising:

• a traction motor system;
• a battery pack comprising one or more battery cells electrically connectable to the traction motor system;
• a current generation device configurable to deliver AC current to the battery pack;
• and
• a controller electrically connected to the current generation device, the controller configured to:
• determine a desired rate of temperature rise for a battery cell,
• determine a desired cell current based on the desired rate of temperature rise,
• determine a desired pack current based on the desired cell current and a configuration of the battery pack, and
• control the current generation device to provide the desired pack current to the battery pack from the current generation device.