Braco Sola, ElisaSan Martín Biurrun, IdoiaBerrueta Irigoyen, AlbertoSanchis Gúrpide, PabloUrsúa Rubio, Alfredo2022-02-012022-02-012021E. 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.2021.3075180.1939-936710.1109/TIA.2021.3075180https://academica-e.unavarra.es/handle/2454/42092Nowadays, 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.10 p.application/pdfeng© 2021 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other workElectric vehicleEnergy storageLithium-ion batteryRenewable energySecond-life batteriesCharacterizationinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccessAcceso abierto / Sarbide irekia