Temperature measurement device and energy storage device including same

A temperature measurement device disposed in an energy storage device equipped with a plurality of power device modules arranged in multiple stages, the temperature measurement device comprising:

• an optical fiber cable including a plurality of sensing spots for sensing temperatures, wherein the plurality of sensing spots are spaced apart from each other by a predetermined unit spacing;
• and
• a plurality of cable fixing units respectively disposed between the multiple stages of the plurality of power device modules and fixing the optical fiber cable,
• wherein the optical fiber cable includes:
• a plurality of inner sections respectively positioned between the multiple stages of the plurality of power device modules and respectively fixed to the cable fixing units;
• and
• at least one outer section for connecting the plurality of inner sections to each other in series and having a length greater than the unit spacing, and
• wherein the outer section includes a curled portion positioned to overlap one circumferential surface of an outermost power device module in a stage in a horizontal direction and having a shape rolled at least once and includes at least one sensing spot that detects a temperature of the optical fiber cable.