Method for Determination of the Internal Short Resistance and Heat Evolution at Different Mechanical Loads of a Lithium Ion Battery Cell Based on Dummy Pouch Cells

Within the scope of developing a multi-physical model describing battery behavior during and after the mechanical load (accelerations, intrusions) of a vehicle’s high voltage battery, an internal short circuit model is of deep interest for a virtual hazard assessment. The internal short resistance and the size of the affected area must be known as a minimum for determining the released heat and, in consequence, the temperatures. The internal short resistance of purpose-built dummy pouch cells, filled with electrolyte-like solvent without conductive salt, has thus been measured in a given short area under various compressive loads. The resistances for different short scenarios obtained are analyzed and described in a mathematical form. Short circuit experiments with dummy cells using an external power source have also been carried out. This set-up allows the measurement of the temperature evolution at a known current and a determination of the actual short resistance. The post-mortem analysis of the samples shows a correlation between the maximum temperatures, released short heat and the separator melt diameter.

[1]  Lars Greve,et al.  Mechanical testing and macro-mechanical finite element simulation of the deformation, fracture, and short circuit initiation of cylindrical Lithium ion battery cells , 2012 .

[2]  Gang Luo,et al.  AutoLion™: A Thermally Coupled Simulation Tool for Automotive Li-Ion Batteries , 2013 .

[3]  Zhengming John Zhang,et al.  Safety of Lithium-Ion Batteries , 2014 .

[4]  Senentxu Lanceros-Méndez,et al.  Lithium ion rechargeable batteries: State of the art and future needs of microscopic theoretical models and simulations , 2015 .

[5]  P. Ramadass,et al.  Study of internal short in a Li-ion cell-II. Numerical investigation using a 3D electrochemical-thermal model , 2014 .

[6]  Kuan-Cheng Chiu,et al.  An electrochemical modeling of lithium-ion battery nail penetration , 2014 .

[7]  Jamie Gomez,et al.  Equivalent circuit model parameters of a high-power Li-ion battery: Thermal and state of charge effects , 2011 .

[8]  P. Ramadass,et al.  Analysis of internal short-circuit in a lithium ion cell , 2009 .

[9]  H. Maleki,et al.  Internal short circuit in Li-ion cells , 2009 .

[10]  T. Wierzbicki,et al.  Calibration and finite element simulation of pouch lithium-ion batteries for mechanical integrity , 2012 .

[11]  Ganesan Nagasubramanian,et al.  Experimental triggers for internal short circuits in lithium-ion cells , 2011 .

[12]  Ahmad Pesaran,et al.  Development of a Novel Test Method for On-Demand Internal Short Circuit in a Li-Ion Cell (Presentation) , 2011 .

[13]  F. Feist,et al.  A ‘Microscopic’ Structural Mechanics FE Model of a Lithium-Ion Pouch Cell for Quasi-Static Load Cases , 2013 .

[14]  Yong Xia,et al.  Damage of cells and battery packs due to ground impact , 2014 .

[15]  R. Holm.  Electric contacts; theory and application , 1967 .

[16]  A. Pesaran,et al.  Lithium-Ion Battery Safety Study Using Multi-Physics Internal Short-Circuit Model , 2009 .

[17]  Fabio Orecchini,et al.  EVs and HEVs Using Lithium-Ion Batteries , 2014 .

[18]  Gregor Gstrein,et al.  Concepts for Mechanical Abuse Testing of High-Voltage Batteries , 2012 .

[19]  Chao Zhang,et al.  Coupled mechanical-electrical-thermal modeling for short-circuit prediction in a lithium-ion cell under mechanical abuse , 2015 .

[20]  Mark E. Fuller,et al.  A battery model for constant-power discharge including rate effects , 2014 .