Multi-Electrode Resistivity Probe for Investigation of Local Temperature Inside Metal Shell Battery Cells via Resistivity: Experiments and Evaluation of Electrical Resistance Tomography

Xiaobin Hong, Nianzhi Li, Jinheng Feng, Qingzhao Kong and Guixiong Liu
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Xiaobin Hong: School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, Guangdong, China
Nianzhi Li: School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, Guangdong, China
Jinheng Feng: School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, Guangdong, China
Qingzhao Kong: Department of Mechanical Engineering, University of Houston, Houston, TX 77204, USA
Guixiong Liu: School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, Guangdong, China

Energies, 2015, vol. 8, issue 2, 1-23

Abstract: Direct Current (DC) electrical resistivity is a material property that is sensitive to temperature changes. In this paper, the relationship between resistivity and local temperature inside steel shell battery cells (two commercial 10 Ah and 4.5 Ah lithium-ion cells) is innovatively studied by Electrical Resistance Tomography (ERT). The Schlumberger configuration in ERT is applied to divide the cell body into several blocks distributed in different levels, where the apparent resistivities are measured by multi-electrode surface probes. The investigated temperature ranges from ?20 to 80 °C. Experimental results have shown that the resistivities mainly depend on temperature changes in each block of the two cells used and the function of the resistivity and temperature can be fitted to the ERT-measurement results in the logistical-plot. Subsequently, the dependence of resistivity on the state of charge (SOC) is investigated, and the SOC range of 70%–100% has a remarkable impact on the resistivity at low temperatures. The proposed approach under a thermal cool down regime is demonstrated to monitor the local transient temperature.

Keywords: local temperature; electrical resistance tomography; metal shell battery; resistivity; thermal safety (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2015
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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