Work

Optimal Low Temperature Charging of Lithium-ion Batteries

Year: 2015

Type: article

Abstract: A lithium-plating side reaction at the lithiated graphite (LiC 6 ) anode leads to poor safety of the lithium-ion battery. Faster charging at normal temperature may lead to a plating side reaction during the end of charging at the anode-separator interface. At lower temperature, the lithium-plating side reaction may become thermodynamically favorable during almost the entire charging period, even at low rates. This paper uses an electrochemical engineering model and dynamic optimization framework to derive charging profiles to minimize lithium plating at low temperatures. Transport parameters for lithium-ion battery are very sensitive at low temperatures. This paper shows the derivation of the optimal charging profile considering strict lower bounds on the plating reaction depending on various thermal insulation conditions (adiabatic, isothermal, and normal heat transfer coefficient) surrounding the battery.

Source: IFAC-PapersOnLine

DOI: 10.1016/j.ifacol.2015.09.134

Authors: Bharatkumar Suthar, Dayaram Sonawane, Richard D. Braatz, Venkat R. Subramanian

Institutions: Washington University in St. Louis, University of Washington, Massachusetts Institute of Technology, Pacific Northwest National Laboratory

Language: English

Topic: Advanced Battery Technologies Research

Subfield: Automotive Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: diamond

Funders: Washington University in St. Louis, Advanced Research Projects Agency - Energy