期刊
JOURNAL OF POWER SOURCES
卷 300, 期 -, 页码 507-524出版社
ELSEVIER
DOI: 10.1016/j.jpowsour.2015.09.060
关键词
Lithium-ion battery; Uncertainty quantification; Polynomial chaos expansion; Compressive sampling; Global sensitivity analysis
资金
- National Science Foundation [CMMI-1201207, CNS-0821794]
- U.S. Department of Energy Office of Science, Office of Advanced Scientific Computing Research [DE-SC0006402]
- NSF [CMMI-1454601]
- University of Colorado Boulder
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [1454601, 1201207] Funding Source: National Science Foundation
In this work, a stochastic, physics-based model for Lithium-ion batteries (LIBs) is presented in order to study the effects of parametric model uncertainties on the cell capacity, voltage, and concentrations. To this end, the proposed uncertainty quantification (UQ) approach, based on sparse polynomial chaos expansions, relies on a small number of battery simulations. Within this UQ framework, the identification of most important uncertainty sources is achieved by performing a global sensitivity analysis via computing the so-called Sobol' indices. Such information aids in designing more efficient and targeted quality control procedures, which consequently may result in reducing the LIB production cost. An LiC6/LiCoO2 cell with 19 uncertain parameters discharged at 0.25C, 1C and 4C rates is considered to study the performance and accuracy of the proposed UQ approach. The results suggest that, for the considered cell, the battery discharge rate is a key factor affecting not only the performance variability of the cell, but also the determination of most important random inputs. (C) 2015 Elsevier B.V. All rights reserved.
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