Abstract
During the life of a Li-Ion battery, capacity and power
capability fade. Despite this degradation, an electric
vehicle battery needs to deliver designed power
performance until battery end-of-life. Comprehension of
battery performance degradation is required to design
sufficient margin for power capability and thermal
management. This paper proposes battery laboratory
testing combined with advanced modelling techniques to
obtain design parameters based on aged batteries.
Laboratory cell aging and characterization tests are
performed to parametrise models, which are used to verify
electric city bus battery performance at various lifetime
levels. The modelling gives an indication on the level of
margin that needs to be designed for power capability and
thermal management. The results obtained indicate that
from performance point of view, the battery that was
studied can be utilized well beyond 80% capacity point
while still retaining power capability and low cell level
power losses.
Original language | English |
---|---|
Pages (from-to) | 83-95 |
Journal | ECS Transactions |
Volume | 68 |
Issue number | 2 |
DOIs | |
Publication status | Published - 2015 |
MoE publication type | A1 Journal article-refereed |
Event | 14th International Symposium on Solid Oxide Fuel Cells, SOFC 2015 - Glasgow, United Kingdom Duration: 26 Jul 2015 → 31 Jul 2015 |