On the Coupling Between Stress and Voltage in Lithium Ion Pouch Cells

被引：34

作者：

Cannarella, John ^{[1
]}

Leng, Collen Z. ^{[1
]}

Arnold, Craig B. ^{[1
]}

机构：

[1] Princeton Univ, Dept Mech & Aerosp Engn, Princeton, NJ 08544 USA

来源：

ENERGY HARVESTING AND STORAGE: MATERIALS, DEVICES, AND APPLICATIONS V | 2014年 / 9115卷

关键词：

load cell; force sensor; lithium-ion battery; intercalation material; mechanical stress coupling; IN-SITU MEASUREMENTS; BATTERIES; EVOLUTION; INTERCALATION; ELECTRODES;

D O I：

10.1117/12.2055152

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

This paper studies the coupling between stress and open circuit voltage in a commercial lithium-ion pouch cell. This coupling is characterized through measurements of a coupling factor, which is defined as the rate of change in voltage with respect to applied mechanical stress. Based on a simple thermodynamic model, this coupling factor is expected to be related to the expansion characteristics of the pouch cell during charging. The expansion characteristics of the pouch cell are compared with measurements of the coupling factors at different states of charge, and are found to be in agreement with the simple thermodynamic model. This work opens the door for the development of mechanical force sensors based on intercalation materials.

引用

页数：8

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