Study on Battery Pack Consistency Evolutions during Electric Vehicle Operation with Statistical Method
Battery pack
Internal resistance
Open-circuit voltage
State of charge
DOI:
10.1016/j.egypro.2017.03.816
Publication Date:
2017-06-02T04:36:57Z
AUTHORS (6)
ABSTRACT
The consistency among lithium-ion battery pack is an important factor affecting their performance. In order to investigate the evolutions and influencing factors from statistics point of view, long-term data two trolley buses are collected. Two parameters including internal resistance open-circuit voltage (OCV) chosen describe in study. mathematical relationship between OCV standard deviation after a period time intimal with polynomial model established. It proved that error within 6%. demonstrated temperature has greatest impact on through correlation analysis. initial SOC inconsistency key based operation data, providing foundation for improvement.
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