Fiber optic sensor detects battery cells

Researchers from Palo Alto Research Center (PARC, a Xerox Company) and LG Chem Power have now introduced an advanced approach: embedded fiber-optic (FO) sensors capable of internally monitoring battery cells. Applications of fiber optic sensors to battery monitoring have been increasing due to the growing need of enhanced battery management systems with accurate state estimations. This approach enhances state-of-charge (SOC) and state-of-health (SOH) estimations, potentially improving. This work demonstrates the potential of fiber optic sensors for measuring thermal effects in lithium-ion batteries, using a fiber optic measurement method of Optical Frequency Domain Reflectometry (OFDR). The innovative application of fiber sensors allows for spatially resolved temperature. [PDF]