Diffusion-Induced Stresses in Transversely Isotropic Cylindrical Electrodes of Lithium-Ion Batteries

2014 ◽  
Vol 161 (14) ◽  
pp. A2243-A2249 ◽  
Author(s):  
Xing-yu Zhang ◽  
Feng Hao ◽  
Hao-sen Chen ◽  
Dai-ning Fang
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Transversely Isotropic ◽  
Induced Stresses

scholarly journals Optimal Charging Profiles with Minimal Intercalation-Induced Stresses for Lithium-Ion Batteries Using Reformulated Pseudo 2-Dimensional Models

2014 ◽  
Vol 161 (11) ◽  
pp. F3144-F3155 ◽  
Author(s):  
Bharatkumar Suthar ◽  
Paul W. C. Northrop ◽  
Richard D. Braatz ◽  
Venkat R. Subramanian
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Induced Stresses ◽  
Dimensional Models

Transversely isotropic constitutive model of the polypropylene separator based on Rich-Hill elastoplastic constitutive theory

2020 ◽  
pp. 1-26
Author(s):  
Guicheng Zhao ◽  
Huifeng Xi ◽  
Jinbiao Yang
Keyword(s):  
Constitutive Model ◽  
Lithium Ion Batteries ◽  
Large Deformation ◽  
Yield Criterion ◽  
Lithium Ion ◽  
Transversely Isotropic ◽  
Porous Polymer ◽  
Constitutive Theory ◽  
Elastic Plastic ◽  
Hardening Law

Abstract The polypropylene (PP) separator is a kind of transversely isotropic porous polymer film, and it is a key component of lithium-ion batteries. The mechanical properties of the separator affect the strength and security of lithium-ion batteries directly. However, the anisotropy behaviors of the separator remain unclear, which has led to inaccuracy of failure behaviors in lithium-ion battery. A large deformation elastic-plastic constitutive model of the PP separator was developed with the Rich-Hill large deformation elastoplastic constitutive theory. Besides, the hardening law of the PP separator was established according to the Hill yield criterion. The constitutive model accurately captured the anisotropy behaviors and the elastic-plastic process considering the large deformation of the separator. Numerical examples for model validation were presented and in good agreement with stress-strain data of tests up to the hardening stage.

scholarly journals An Optimal Fast-Charging Strategy for Lithium-Ion Batteries via an Electrochemical–Thermal Model with Intercalation-Induced Stresses and Film Growth

Energies ◽  
2020 ◽  
Vol 13 (9) ◽  
pp. 2388 ◽  
Author(s):  
Guangwei Chen ◽  
Zhitao Liu ◽  
Hongye Su
Keyword(s):  
Lithium Ion Batteries ◽  
Thermal Model ◽  
Film Growth ◽  
Film Formation ◽  
Lithium Ion ◽  
Life Time ◽  
Constant Current ◽  
Charging Time ◽  
Fast Charging ◽  
Induced Stresses

Optimal fast charging is an important factor in battery management systems (BMS). Traditional charging strategies for lithium-ion batteries, such as the constant current–constant voltage (CC–CV) pattern, do not take capacity aging mechanisms into account, which are not only disadvantageous in the life-time usage of the batteries, but also unsafe. In this paper, we employ the dynamic optimization (DP) method to achieve the optimal charging current curve for a lithium-ion battery by introducing limits on the intercalation-induced stresses and the solid–liquid interface film growth based on an electrochemical–thermal model. Furthermore, the backstepping technique is utilized to control the temperature to avoid overheating. This paper concentrates on solving the issue of minimizing charging time in a given target State of Charge (SoC), while limiting the capacity loss caused by intercalation-induced stresses and film formation. The results indicate that the proposed optimal charging method in this paper offers a good compromise between the charging time and battery aging.

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