BATTERY TEMPERATURE CONTROL METHOD AND BATTERY TEMPERATURE CONTROL SYSTEM

A battery temperature control method for controlling a temperature of a battery mounted on a vehicle by a temperature control device, the method comprises: a travel plan acquisition step of acquiring a travel plan of the vehicle, a battery input and output acquisition step of acquiring a required input and output of the battery, a target temperature acquisition step of acquiring a first battery temperature threshold, a battery temperature transition prediction step of predicting a temperature transition of the battery when the vehicle travels according to the travel plan, a temperature control amount prediction step of acquiring a predicted temperature control amount of the battery at a first time or a first position in the travel plan, an excessive temperature control amount calculation step of calculating an excessive temperature control amount, a temperature control restriction step, and a temperature control step of controlling the temperature of the battery.