Molten salt battery device and control method for molten salt battery device

A molten salt battery device, comprising:

• a plurality of molten salt batteries operating in a state that molten salt serving as electrolyte is melted at a temperature higher than room temperature;
• heaters each provided in each of the plurality of molten salt batteries;
• an electric power source for supplying electric power at room temperature to the heaters provided in a part of the plurality of molten salt batteries;
• and
• an electric power supplying unit for supplying electric power from the part of the plurality of molten salt batteries, to the heaters provided in another part of the plurality of molten salt batteries.

A control method for controlling a molten salt battery device comprising:

• a plurality of molten salt batteries operating in a state that molten salt serving as electrolyte is melted at a temperature higher than room temperature;
• heaters each heating each molten salt battery;
• and an electric power source capable of operating at room temperature, comprising the steps of:
• supplying electric power from the electric power source to the heaters heating a part of the plurality of molten salt batteries in a state that a temperature of the plurality of molten salt batteries is at room temperature;
• and
• supplying electric power from the molten salt battery which has been heated by the heaters so that the molten salt has been melted to the heaters heating another part of the plurality of molten salt batteries.