Korea Advanced Institute of Science and Technology

Sk on Co., Ltd.

Korea Research Institute of Standards and Science

Jeong Joo Lee

Jun Hee Jung

Sei Hoon Cho

Jae Il Hwang

Ha Neul Choi

Ha Chul Jeong

Bon Seok Ku

Min Song Kang

Jeong Woon Ko

Jin Su Han

Sang Hun Kim

Dong Jin Yoon

Il Bum Kwon

Ja Sung Yun

Byeong Jun Pak

Ii Bum Kwon

A battery pack includes a pack housing including a plurality of accommodation spaces; a partition member coupled to the pack housing and partitioning a space of the pack housing into the plurality of accommodation spaces; a plurality of pack units respectively disposed in the plurality of accommodation spaces; a first pack cover in contact with the partition member and covering at least one of the plurality of accommodation spaces or the pack unit; and a second pack cover covering the first pack cover and the pack housing.

Battery pack

Provided is a physical quantity measuring method using a Brillouin optical fiber sensor. An optical fiber is set on a structure and a pair of pulse lights having different pulse widths is selected. The pulse lights are sequentially transmitted through the optical fiber to obtain back scattering lights and Brillouin gain spectra. The Brillouin gain spectra are compared to each other to calculate a normalized spectrum and a Brillouin frequency is acquired based on the normalized spectrum. The Brillouin frequency is multiplied by a conversion factor of a corresponding physical quantity of the structure to obtain the physical quantity. Accordingly, a portion of the optical fiber from which a sensing signal can be acquired is shortened to improve spatial resolution.

Physical quantity measuring method using Brillouin optical fiber sensor

Growing community of inventors

Daejeon, South Korea

Jeong Joo Lee