Soto Cabria, AdriánBerrueta Irigoyen, AlbertoZorrilla, PabloIribarren Zabalegui, ÁlvaroCastillo, Diego H.Wenceslao E., RodríguezRodríguez, Adolfo J.Vargas, David T.Matías Maestro, IgnacioSanchis Gúrpide, PabloUrsúa Rubio, Alfredo2021-11-092022-05-032021A. Soto et al., "Integration of second-life battery packs for self-consumption applications: analysis of a real experience," 2021 IEEE International Conference on Environment and Electrical Engineering and 2021 IEEE Industrial and Commercial Power Systems Europe (EEEIC / I&CPS Europe), 2021, pp. 1-6, doi: 10.1109/EEEIC/ICPSEurope51590.2021.9584809.978-1-6654-3613-710.1109/EEEIC/ICPSEurope51590.2021.9584809https://academica-e.unavarra.es/handle/2454/41009This contribution presents a methodology for the integration of Li-ion batteries discarded from electric vehicle into a collective self-consumption installation, showing the technical feasibility of such battery second use. In this regard, the state of charge (SOC) estimation is a relevant issue for the energy management of the second-life battery. Therefore, a SOC estimator is proposed in this contribution and tested in field. Moreover, the revealed costs analysis allows an economic comparison between the integration of a discarded battery pack in a second-life application or a remanufacture of these packs, thereby selecting the most suitable cells to build second-life batteries. This is a crucial issue for companies focused on the development of second-life batteries. The results obtained after testing the second-life battery pack in a real installation make it possible to extol the benefits of including this type of batteries in a self-consumption system, reaching a self-consumption ratio of 69 % and reducing by 36 % the maximum power peak demanded from the grid.6 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 work.BatteryEnergy storage systemLithium-ionSecond-lifeSOCContribución a congreso / Biltzarrerako ekarpenaAcceso abierto / Sarbide irekiainfo:eu-repo/semantics/openAccess