Improved fiber optic device for in situ determination of electrolyte stratification in lead-acid batteries

被引：8

作者：

Gajdatsy, G. ^{[1
]}

Benedek, F. ^{[1
]}

Kokavecz, J. ^{[1
]}

Szabo, G. ^{[1
]}

Kornis, J. ^{[2
]}

机构：

[1] Univ Szeged, Inst Mat Sci & Engn, H-6720 Szeged, Hungary

[2] Budapest Univ Technol & Econ, Dept Phys, H-1111 Budapest, Hungary

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2009年 / 80卷 / 12期

基金：

匈牙利科学研究基金会;

关键词：

SENSOR; SYSTEMS; DESIGN;

D O I：

10.1063/1.3272201

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A three-channel, highly sensitive, fiber optic device is presented to measure acid concentration in lead-acid batteries during their operation. The refractive index and thereby the concentration of sulfuric acid is measured by a bent, silica glass fiber tip, stripped off its cladding. Sensor heads of the device are small enough to be inserted at different positions in the cell of an ordinary, flooded lead-acid battery. Measuring the concentration of the electrolyte at different depths of the battery cell, acid stratification can be accurately determined. During the test of the instrument, about 0.3 Hz temporal and 0.05 wt % concentration resolutions were achieved while the temperature drift was found to be -0.25 wt %/degrees C. (C) 2009 American Institute of Physics. [doi:10.1063/1.3272201]

引用

页数：4

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