Simultaneous measurement of temperature and pressure sensing technology based on double cavity matching in batteries

IF 2.6 3区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Optical Fiber Technology Pub Date : 2024-08-30 DOI:10.1016/j.yofte.2024.103954

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

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引用次数: 0

Abstract

A compact sensor based on fiber Fabry-Pérot (FP) cavities dual-cavity matching technique cascaded with fiber Bragg grating (FBG) is proposed and demonstrated to measure pressure and temperature variations inside battery. The sensitivity amplification mechanism for two-parameter measurements is analyzed and a cased reference chamber scheme is designed. Low-cost, small-size, high-temperature and corrosion-resistant all-fiber-optic high sensitivity gas pressure sensors targeting the interior of energy storage batteries are fabricated and cascaded with FBGs to measure temperature parameters. The experimental results show that the sensor has a sensitivity of −26.8322 nm/MPa in a pressure range of 1.86 MPa, the gas pressure inside the battery and the temperature inside and outside the battery at different discharge rates of 1500mAH capacity monobloc batteries can be measured practically, directly and instantly. It has potential applications in detecting subtle pressure variations caused by gas precipitation inside the battery and in temperature measurement, and provides a new concept and a feasible technological path for the measurement of key parameters inside lithium-ion batteries.

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基于电池双腔匹配的温度和压力同步测量传感技术

提出并演示了一种基于与光纤布拉格光栅（FBG）级联的光纤法布里-佩罗（FP）腔双腔匹配技术的紧凑型传感器，用于测量电池内部的压力和温度变化。分析了双参数测量的灵敏度放大机制，并设计了套管式参考室方案。制作了针对储能电池内部的低成本、小尺寸、耐高温和耐腐蚀的全光纤高灵敏度气体压力传感器，并将其与 FBG 级联以测量温度参数。实验结果表明，该传感器在 1.86 MPa 压力范围内的灵敏度为 -26.8322 nm/MPa，可实际、直接、即时测量 1500mAH 容量单体电池在不同放电速率下的电池内部气体压力和电池内外温度。它在检测电池内部气体析出引起的细微压力变化和温度测量方面具有潜在的应用价值，为锂离子电池内部关键参数的测量提供了一种新的概念和可行的技术途径。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Optical Fiber Technology 工程技术-电信学

CiteScore

4.80

自引率

11.10%

发文量

327

审稿时长

63 days

期刊介绍： Innovations in optical fiber technology are revolutionizing world communications. Newly developed fiber amplifiers allow for direct transmission of high-speed signals over transcontinental distances without the need for electronic regeneration. Optical fibers find new applications in data processing. The impact of fiber materials, devices, and systems on communications in the coming decades will create an abundance of primary literature and the need for up-to-date reviews. Optical Fiber Technology: Materials, Devices, and Systems is a new cutting-edge journal designed to fill a need in this rapidly evolving field for speedy publication of regular length papers. Both theoretical and experimental papers on fiber materials, devices, and system performance evaluation and measurements are eligible, with emphasis on practical applications.