基于光纤法布里-珀罗腔和布拉格光栅的锂离子电池中的压力和温度力学

Mechanics of pressure and temperature in lithium-ion cells based on a fiber Fabry-Perot cavity and Bragg grating.

作者信息

Liu Qinpeng, Xing Meihua, Yang Di, Yan Cheng, Liu Bo

出版信息

Appl Opt. 2025 Jun 1;64(16):D52-D58. doi: 10.1364/AO.553581.

Abstract

A compact gas pressure and temperature sensor based on a Fabry-Perot interferometer (FPI) and fiber Bragg grating (FBG), which is used inside a cell, is proposed and experimentally demonstrated, and it is successfully applied to the measurement of internal temperature and pressure of cells. The experimental results show that the sensor's sensitivity for pressure and temperature is 5.026 nm/MPa and 0.17 nm/°C, respectively. The designed sensor has good linearity and stability, and it enables the measurement of pressure and temperature under different working conditions of the cell, which provides data support for cell health management and early danger warning.

摘要

提出并通过实验证明了一种基于法布里-珀罗干涉仪（FPI）和光纤布拉格光栅（FBG）的紧凑型气体压力和温度传感器，该传感器用于细胞内部，并成功应用于细胞内部温度和压力的测量。实验结果表明，该传感器对压力和温度的灵敏度分别为5.026 nm/MPa和0.17 nm/°C。所设计的传感器具有良好的线性度和稳定性，能够在细胞的不同工作条件下测量压力和温度，为细胞健康管理和早期危险预警提供数据支持。