Electrode sheet drying device

An electrode sheet drying device that dries an electrode sheet transferred along a transfer path, comprising:

• an infrared heater disposed on one side of the electrode sheet;
• and
• a radiation temperature sensor disposed on the other side of the electrode sheet, wherein the radiation temperature sensor is disposed to be able to measure a temperature of a back surface of the electrode sheet corresponding to a back side of a front surface portion of the electrode sheet that is closest to the infrared heater, and configured such that a peak wavelength of infrared light radiated to a surface of the electrode sheet by the infrared heater is not included in a detectable wavelength range of the infrared light detected by the radiation temperature sensor.