Publication:
Experimental assessment of first- and second-life electric vehicle batteries: performance, capacity dispersion, and aging

Date

2021

Director

Publisher

IEEE
Acceso abierto / Sarbide irekia
Artículo / Artikulua
Versión aceptada / Onetsi den bertsioa

Project identifier

European Commission/Horizon 2020 Framework Programme/774094openaire
MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/DPI2016-80641-R
AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-111262RB-I00/ES/recolecta

Abstract

Nowadays, the reuse of electric vehicle batteries is considered to be a feasible alternative to recycling, as it allows them to benefit from their remaining energy capacity and to enlarge their lifetime. Stationary applications, such as self-consumption or off-grid systems support, are examples of second-life (SL) uses for retired batteries. However, reused modules that compose these batteries have heterogeneous properties, which limit their performance. This article aims to assess the influence of degradation in modules from electric vehicles, covering three main aspects: performance, capacity dispersion, and extended SL behavior. First, a complete characterization of new and reused modules is carried out, considering three temperatures and three discharge rates. In the second stage, intra- and intermodule capacity dispersions are evaluated with new and reused samples. Finally, the behavior during SL is also analyzed, through an accelerated cycling test so that the evolution of capacity and dispersion are assessed. Experimental results show that the performance of reused modules is especially undermined at low temperatures and high current rates, as well as in advanced stages of aging. The intramodule dispersion is found to be similar in reused and new samples, while the intermodule differences are nearly four times greater in SL.

Description

Keywords

Electric vehicle, Energy storage, Lithium-ion battery, Renewable energy, Second-life batteries, Characterization

Department

Ingeniaritza Elektrikoa, Elektronikoaren eta Telekomunikazio Ingeniaritzaren / Institute of Smart Cities - ISC / Ingeniería Eléctrica, Electrónica y de Comunicación

Faculty/School

Degree

Doctorate program

item.page.cita

E. Braco, I. S. Martín, A. Berrueta, P. Sanchis and A. Ursúa, eExperimental Assessment of First- and Second-Life Electric Vehicle Batteries: Performance, Capacity Dispersion, and Aging,' in IEEE Transactions on Industry Applications, vol. 57, no. 4, pp. 4107-4117, July-Aug. 2021, doi: 10.1109/TIA.2021.3075180.

item.page.rights

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