High-resolution Interferometric Measurement of Thickness Change on a Lithium-Ion Pouch Battery

被引：7

作者：

Bohn, G. ^{[1
]}

Taub, J. ^{[1
]}

Linke, A. ^{[1
,2
]}

Bayer, S. ^{[3
]}

Oeser, D. ^{[1
,2
]}

Ziegler, A. ^{[1
,2
]}

Ettl, P. ^{[4
]}

Ackva, A. ^{[1
,2
]}

机构：

[1] Univ Appl Sci Wurzburg Schweinfurt, Fac Elect Engn, D-97421 Schweinfurt, Germany

[2] Univ Appl Sci Wurzburg Schweinfurt, Technol Transfer Zentrum Elektromobilitat, D-97616 Bad Neustadt an der Saale, Germany

[3] Staatliches Bauamt, Weissenburgstr 6, D-97082 Wurzburg, Germany

[4] 3D Shape GmbH, Weichselgarten 21, D-91058 Erlangen, Germany

来源：

2019 3RD INTERNATIONAL CONFERENCE ON ENVIRONMENTAL AND ENERGY ENGINEERING (IC3E 2019) | 2019年 / 281卷

关键词：

D O I：

10.1088/1755-1315/281/1/012030

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：

Volume change of graphite leads to change in thickness of battery storage layers during discharging and charging. Pouch cell lithium ion batteries are used in the field of electric vehicles and solar home storage. This paper shows a measurement setup for the three-dimensional measurement of thickness change on a flat 6.7mm thick pouch cell using a white light interferometer. With a measuring field of 7.05mm diameter the resulting 3D thickness change record contains 226000 3D readings. The measuring points have a lateral distance of 13.1 mu m. The repeatability of the measurement is 312.8nm for the individual values and 64.1nm for the average value. In addition, this paper shows how the storage capacity of this pouch cell drops over 30 charge cycles.

引用

页数：7

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