Mathematical Model of Lithium-Ion Battery Cell and Battery (Lib) on its Basis

Smagin, D.I.; Trofimov, A. A.; Napreenko, K. S.; Neveshkina, A. R.

doi:10.1088/1757-899x/714/1/012027

Cited by 4 publications

(1 citation statement)

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“…The internal resistance method estimates SOH through the relationship between battery internal resistance and battery capacity attenuation, however, the accurate measurement of internal resistance is difficult in practical applications [12]. The electrochemical model [13], mathematical model [14], and equivalent circuit model [15,16] is collectively referred to as model methods. As for electrochemical models, the complex electrochemical system makes it difficult to control the internal degradation mechanism.…”

Section: Introductionmentioning

confidence: 99%

A Method for Battery Health Estimation Based on Charging Time Segment

et al. 2021

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The problem of low accuracy and low convenience in the existing state of health (SOH) estimation method for vehicle lithium-ion batteries has become one of the important problems in the electric vehicle field. This paper proposes an improved cuckoo search particle filter (ICS-PF) algorithm based on a charging time segment from equal voltage data to estimate battery health status. Appropriate voltage ranges of charging time segments are selected according to the battery charging law, and in the meantime, the charging time segments are collected as a health indicator to establish the corresponding relationship with battery capacity attenuation value. An improved cuckoo search particle filter algorithm based on the traditional particle filter (PF) and cuckoo search (CS) algorithm is proposed by enhancing the search step size and discovery probability to estimate the capacity attenuation. The estimation result shows that this method is superior to the traditional particle filter and cuckoo search particle filter (CS-PF) method, as the maximum estimation error is less than 2%.

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