Evaluation of Present Accelerated Temperature Testing and Modeling of Batteries

Battery manufacturers and device companies often test batteries at high temperature to accelerate the degradation process. The data collected from these accelerated tests are then used to determine battery performance and reliability over specified nominal operating temperatures. In many cases, comp...

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Bibliographic Details
Published in:Applied sciences 2018-10, Vol.8 (10), p.1786
Main Authors: Diao, Weiping, Xing, Yinjiao, Saxena, Saurabh, Pecht, Michael
Format: Article
Language:English
Subjects:
accelerated temperature testing
Accelerated tests
acceleration factor
Aging
Arrhenius model
Batteries
Behavior
Calendars
Chemical reactions
Electric vehicles
Energy
Failure
High temperature
Laboratories
Lithium
Lithium-ion batteries
Operating temperature
Reliability
Temperature effects
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Summary:Battery manufacturers and device companies often test batteries at high temperature to accelerate the degradation process. The data collected from these accelerated tests are then used to determine battery performance and reliability over specified nominal operating temperatures. In many cases, companies assume an Arrhenius model, or prescribe a decade rule to conduct the data analysis. This paper presents the flaws in accelerated temperature testing of batteries using the Arrhenius model and the decade rule, with the emphasis on lithium-ion batteries. Experimental case studies demonstrate the inaccuracy of the Arrhenius model. Alternative methods based on reliability science are then provided.
ISSN:2076-3417
2076-3417
DOI:10.3390/app8101786