scholarly journals Detection Method for Soft Internal Short Circuit in Lithium-Ion Battery Pack by Extracting Open Circuit Voltage of Faulted Cell

Energies ◽  
2018 ◽  
Vol 11 (7) ◽  
pp. 1669 ◽  
Author(s):  
Minhwan Seo ◽  
Taedong Goh ◽  
Minjun Park ◽  
Sang Kim
Keyword(s):  
Lithium Ion Battery ◽  
Open Circuit Voltage ◽  
Detection Method ◽  
Short Circuit ◽  
Lithium Ion ◽  
Open Circuit ◽  
Battery Pack ◽  
Internal Short Circuit

scholarly journals Development of Life-cycle Detection and Extending Function for Reusing Automotive Lithium-ion Battery – Verified in 52V LiMnNiCoO2 Platform

2020 ◽  
Author(s):  
Wu-Yang Sean ◽  
Ana Pacheco
Keyword(s):  
Life Cycle ◽  
Lithium Ion Battery ◽  
Management System ◽  
Open Circuit Voltage ◽  
Lithium Ion ◽  
Open Circuit ◽  
Battery Pack ◽  
Battery Management System ◽  
Battery Management ◽  
Cycle Detection

Abstract For reusing automotive lithium-ion battery, an in-house battery management system is developed. To overcome the issues of life cycle and capacity of reused battery, an online function of estimating battery’s internal resistance and open-circuit voltage based on adaptive control theory are applied for monitoring life cycle and remained capacity of battery pack simultaneously. Furthermore, ultracapacitor is integrated in management system for sharing peak current to prolong life span of reused battery pack. The discharging ratio of ultracapacitor is adjusted manually under Pulse-Width-Modulation signal in battery management system. In case study in 52V LiMnNiCoO2 platform, results of estimated open-circuit voltage and internal resistances converge into stable values within 600(s). These two parameters provide precise estimation for electrical capacity and life cycle. It also shows constrained voltage drop both in the cases of 25% to 75% of ultracapacitors discharging ratio compared with single battery. Consequently, the Life-cycle detection and extending functions integrated in battery management system as a total solution for reused battery are established and verified.

Internal short circuit detection for lithium-ion battery pack with parallel-series hybrid connections

2020 ◽  
Vol 255 ◽  
pp. 120277 ◽  
Author(s):  
Yue Pan ◽  
Xuning Feng ◽  
Mingxuan Zhang ◽  
Xuebing Han ◽  
Languang Lu ◽  
...  
Keyword(s):  
Lithium Ion Battery ◽  
Short Circuit ◽  
Lithium Ion ◽  
Battery Pack ◽  
Internal Short Circuit ◽  
Parallel Series
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