Efficient Testing and Evaluation Methods for Faster Market Introduction of Large Lithium-Ion Batteries

摘要

The paper proposes a rapid cost effective test procedure for characterising large lithium-ion batteries. This procedure involves a series of full charge and full discharge tests with short pauses during these charge and discharge cycles. Such tests are shown to be useful in determining the open circuit voltage and circuit parameters of the battery, as well as battery degradation. However, it is shown that a sophisticated design of experiment is required for these tests to be meaningful. This usually involves gaming information using carefully planned preliminary tests. The reader is taken through an example of such a process. The above tests provide a preliminary picture of the characteristics of a battery, which can be improved further based on in-situ measurements of battery parameters in niche applications.