Temperature measurement device and energy storage device including same
A temperature measurement device according to an embodiment of the present disclosure may be provided in an energy storage device having a plurality of power device modules. The temperature measurement device may comprise a plurality of sensing spots for temperature sensing, wherein the plurality of sensing spots may include: optical fiber cables spaced a regular unit distance apart from each other; and a plurality cable fixing units disposed between the plurality of power device modules to fix the optical fiber cables. The optical fiber cables may comprise: a plurality of inner sections which are placed between the plurality of power device modules and fixed to the cable fixing units; and at least one outer section which connects the plurality of inner sections in series to each other and has a larger length than the unit distance.
1 . 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.
2 . The temperature measurement device of claim 1 , further comprising:
a controller connected to the optical fiber cable, wherein the controller is configured to visualize temperature information sensed from the plurality of sensing spots as a graph and output the graph on a display.
3 . The temperature measurement device of claim 1 , wherein the outer section is located adjacent to one circumferential surface of an outermost power device module in a stage.
4 . The temperature measurement device of claim 1 , wherein the outer section includes a plurality of outer sections,
wherein a plurality of curled portions of the plurality of outer sections are arranged in a row in a vertical direction.
5 . The temperature measurement device of claim 1 , wherein a curvature radius of the curled portion is 20 times or more the cross-sectional diameter of the optical fiber cable.
6 . The temperature measurement device of claim 1 , wherein the number of sensing spots located in the inner section is greater than the number of sensing spots located in the outer section.
7 . The temperature measurement device of claim 1 , wherein the outer section includes a plurality of outer sections,
wherein the plurality of outer sections include:
a first outer section located in front of a foremost power device module in one stage; and
a second outer section located at the rear of a rearmost power device module in another stage adjacent to the one stage,
wherein the first outer section and the second outer section are located alternately with each other.
8 . An energy storage device comprising:
a rack;
a plurality of power device modules installed in multiple stages in the rack;
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 on upper surfaces of power device modules in the respective stages, 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.
9 . The energy storage device of claim 8 , further comprising:
at least one hook formed on the rack and fixing the at least one outer section of the optical fiber cable.
10 . The energy storage device of claim 9 , wherein the power device module is a battery module.