Passive thermal switch devices having thermal switch material that passively switches between a thermal insulating state and a thermal conducting state and vehicles having the same

A passive thermal switch device for regulating a temperature of a thermal component configured to generate heat, the passive thermal switch comprising:

• a first plate provided on the thermal component, the first plate having a thermal switch material that switches from an antiferromagnetic state to a ferromagnetic state upon exceeding a state transition temperature;
• and
• a second plate having a permanent magnet, the second plate moveable between a thermal insulator position and a thermal conductor position based on a temperature of the thermal switch material, in the thermal insulator position the second plate is spaced apart from the first plate, and in the thermal conductor position the second plate is in contact with the first plate,
• wherein when the temperature of the thermal switch material is less than the state transition temperature, the thermal switch material is in the antiferromagnetic state and the second plate is spaced apart from the first plate as the permanent magnet of the second plate is not magnetically attracted to the thermal switch material, and
• wherein when the temperature of the thermal switch material is greater than the state transition temperature, the thermal switch material is in the ferromagnetic state and the second plate is in contact with the first plate as the permanent magnet of the second plate is magnetically attracted to the thermal switch material.