Design of a test platform for the determination of Lithium-ion batteries state of health

Capitaine, J.-A.; Wang, Q.

Abstract

This paper presents a novel design for a test platform to determine the State of Health (SOH) of lithium-ion batteries. The SOH is a key parameter of a battery energy storage system and its estimation remains a challenging issue. The batteries that have been tested are 18650 li-ion cells as they are the most commonly used batteries on the market. The test platform design is detailed from the building of the charging and discharging circuitry to the software. Data acquired from the testing circuitry is stored and displayed in LabView to obtain the charging and discharging curves. The resulting graphs are compared to the outcome predicted by the battery datasheets, to verify that the platform delivers coherent values. The SOH of the battery is then calculated using a Coulomb Counting method in LabView. The batteries will be discharged through various types of resistive circuits, and the differences in the resulting curves will be discussed. A single battery cell will also be tested over 30 cycles and the decrease in the SOH will be clearly identified.

Citation

Capitaine, J., & Wang, Q. (2019). Design of a test platform for the determination of Lithium-ion batteries state of health. Journal of Mechanical Design, 141(2), Article 021702. https://doi.org/10.1115/1.4041855

• Journal Article Type: Article
• Acceptance Date: Oct 29, 2018
• Online Publication Date: Oct 30, 2018
• Publication Date: Feb 28, 2019
• Deposit Date: Oct 29, 2018
• Publicly Available Date: Dec 20, 2019
• Journal: Journal of Mechanical Design
• Print ISSN: 1050-0472
• Electronic ISSN: 1528-9001
• Publisher: American Society of Mechanical Engineers
• Peer Reviewed: Peer Reviewed
• Volume: 141
• Issue: 2
• Article Number: 021702
• DOI: https://doi.org/10.1115/1.4041855
• Public URL: https://durham-repository.worktribe.com/output/1344199