online internal resistance measurement application in lithium ion battery capacity and state of charge estimation

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ID: 164715
2018
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Abstract
State of charge (SOC) and state of health (SOH) are two significant state parameters for the lithium ion batteries (LiBs). In obtaining these states, the capacity of the battery is an indispensable parameter that is hard to detect directly online. However, there is a strong correlation relationship between this parameter and battery internal resistance. This article first shows a simple and effective online internal resistance detection method. Secondly, the relationship between the measured internal resistance and the LiBs capacity is established by linear fitting. Finally, the capacity through internal resistance conversion is applied in SOC estimation. The estimation results show that this method can effectively enhance the SOC estimation accuracy regardless of temperature change and battery degradation.
Reference Key
bao2018energiesonline Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Yun Bao;Wenbin Dong;Dian Wang
Journal acs combinatorial science
Year 2018
DOI
10.3390/en11051073
URL
http://www.mdpi.com/1996-1073/11/5/1073
Keywords
Capacity lithium ion battery state of charge linear fittingtechnology

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