Electrified vehicle and temperature control method of storage battery

A temperature control method of a storage battery of which a temperature is raised by a temperature raising device, the storage battery being mounted on a vehicle and configured to be charged from an external power supply, in which the temperature raising device is configured to raise the temperature of the storage battery by using electric power, the temperature control method comprising:

• acquiring a scheduled traveling start time of an electrified vehicle;
• acquiring a target temperature of the storage battery at the scheduled traveling start time;
• acquiring a charge electricity fee for charge electric power amount from a start of charging to an end of charging from the external power supply;
• acquiring an electric power amount fee unit price of the external power supply;
• calculating a charge electric power amount fee unit price based on the charge electricity fee;
• creating a temperature raising plan from the end of the charging to the scheduled traveling start time such that the temperature of the storage battery is the target temperature at the scheduled traveling start time;
• and
• controlling the temperature raising device based on the temperature raising plan,
• wherein the temperature raising plan is created such that
• electric power of the storage battery is supplied to the temperature raising device in a time slot in which the electric power amount fee unit price of the external power supply is higher than the charge electric power amount fee unit price, and
• electric power of the external power supply is supplied to the temperature raising device in a time slot in which the electric power amount fee unit price is equal to or lower than the charge electric power amount fee unit price.