TY - THES AU - Sőrés, Milán Attila TI - Akkumulátor öregedési modellek villamosenergia-piaci környezetben PB - Budapesti Műszaki és Gazdaságtudományi Egyetem PY - 2023 SP - 123 UR - https://m2.mtmt.hu/api/publication/34735587 ID - 34735587 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Ballai, Gergő AU - Sőrés, Milán Attila AU - Vásárhelyi, Lívia AU - Szenti, Imre AU - Kun, Róbert AU - Hartmann, Bálint AU - Sebők, Dániel AU - Farkas, Ferenc AU - Zahoor, A. AU - Mao, G. AU - Sápi, András AU - Kukovecz, Ákos AU - Kónya, Zoltán TI - Exploration of Li-Ion Batteries during a Long-Term Heat Endurance Test Using 3D Temporal Microcomputed Tomography Investigation JF - ENERGY TECHNOLOGY J2 - ENERGY TECHNOL-GER VL - 11 PY - 2023 IS - 8 PG - 10 SN - 2194-4288 DO - 10.1002/ente.202300207 UR - https://m2.mtmt.hu/api/publication/34536297 ID - 34536297 LA - English DB - MTMT ER - TY - CHAP AU - Sőrés, Milán Attila AU - Kövesdi, Roland AU - Hartmann, Bálint ED - Mohos, András ED - Táczi, István ED - Tóth, Zoltán TI - Nátrium-kén akkumulátor, mint hálózati energiatároló T2 - XIII. Mechwart András Ifjúsági Találkozó: Konferenciakiadvány PB - Magyar Elektrotechnikai Egyesület, Mechwart András Ifjúsági Társaság CY - Siófok SN - 9789639299511 PY - 2023 SP - 118 EP - 127 PG - 10 DO - 10.54232/MAIT.2023_10 UR - https://m2.mtmt.hu/api/publication/34431571 ID - 34431571 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Sőrés, Milán Attila AU - Hartmann, Bálint TI - Az akkumulátoros energiatárolás lehetőségei a hálózati szolgáltatások területén JF - MAGYAR KÉMIKUSOK LAPJA J2 - MAGY KEM LAP VL - 78 PY - 2023 IS - 11 SP - 320 EP - 323 PG - 4 SN - 0025-0163 UR - https://m2.mtmt.hu/api/publication/34395463 ID - 34395463 LA - Hungarian DB - MTMT ER - TY - BOOK AU - Sőrés, Milán Attila TI - Possibilities for automotive second life batteries in frequency regulation markets PY - 2023 UR - https://m2.mtmt.hu/api/publication/34052472 ID - 34052472 AB - The sales for BEV and PHEV vehicles are growing exponentially since he beginning of the last decade. In the next years these batteries will reach 8 – 15 years, the end of their expected lifetime. After the end of life in the automotive sector, there is a possibility for second life in frequency regulation market. Depending on their cost, usage, replacement frequency, they can provide a comparable alternative to newly installed BESS. In my poster, these dependencies and the corresponding revenue is presented. LA - English DB - MTMT ER - TY - JOUR AU - Sőrés, Milán Attila AU - Hartmann, Bálint TI - Prolonging battery lifetime in various energy markets JF - JOURNAL OF ENERGY STORAGE J2 - J ENERGY STORAGE VL - 56 PY - 2022 PG - 11 SN - 2352-152X DO - 10.1016/j.est.2022.105959 UR - https://m2.mtmt.hu/api/publication/33212863 ID - 33212863 N1 - Export Date: 8 November 2022 Correspondence Address: Sőrés, M.A.Veszprém Kádártai street 31/2, Hungary; email: soresm@edu.bme.hu AB - Li-ion batteries are more and more common not only in the sector of e-mobility but their role is increasing in stationary storage as well. The possibilities of the use of these storages are various. In this paper, the authors were focused on the possibility of providing frequency reserve and other flexibility services for the grid. The paper focuses on the operation of a battery energy storage system and not the sizing of one. In the developed model the authors consider the profit from these services and their impact on the battery lifetime. With these two main factors, the operation of the battery system is compared in the case of different frequency reserve services and other market operations. Results show that battery energy storage systems have the potential for frequency reserve services in case of an optimized operation strategy. Simulation results also show that these optimized operation strategies can be different in different phases of the battery life. The presented model was developed under the EU Horizon 2020 programme in the OneNet project. LA - English DB - MTMT ER - TY - JOUR AU - Sőrés, Milán Attila AU - Hartmann, Bálint TI - Analysis of the Relation between State of Health and Self-Discharge of Li-Ion Batteries JF - ACTA POLYTECHNICA HUNGARICA J2 - ACTA POLYTECH HUNG VL - 18 PY - 2021 IS - 10 SP - 225 EP - 244 PG - 20 SN - 1785-8860 DO - 10.12700/APH.18.10.2021.10.12 UR - https://m2.mtmt.hu/api/publication/32631735 ID - 32631735 LA - English DB - MTMT ER - TY - CHAP AU - Sőrés, Milán Attila AU - Biró, Norbert AU - Örökös-Tóth, István ED - Csiszár, Beáta ED - Hankó, Csilla ED - Kajos, Luca Fanni ED - Mező, Emerencia TI - Thermal analysis and simulation of PCM based cooling of li-ion battery cell T2 - IX. Interdiszciplináris Doktorandusz Konferencia 2020 [9th Interdisciplinary Doctoral Conference 2020] PB - Pécsi Tudományegyetem Doktorandusz Önkormányzat CY - Pécs SN - 9789634295839 PY - 2020 SP - 476 EP - 489 PG - 13 UR - https://m2.mtmt.hu/api/publication/31814761 ID - 31814761 AB - The spread of battery energy storage systems (BESS) contributed to the need for accurate estimation for thermal behavior of the battery cells. There are two reasons behind this necessity. The first one is the economic side of the problem, as thermal conditions are closely related to the state of health (SOH), indicating the replacement of an old battery with a new one. The other side of is the safety concerns especially in case of e-mobility applications, since thermal runaway poses a serious threat to the whole system. Therefore, in our paper we briefly overviewed the factors contributing to battery degradation and the possible cooling solutions in case a battery system before our experiments and simulation. The experiments were conducted on a SONY 18650 cell, with constant 2C and 4C discharges in case of different passive cooling method. The analyzed cooling methods were air cooling and PCM-sleeve overlay. The acquired cell temperature results were compared to developed simplified model. Then the simulated results were examined from the point of view of potential e-mobility applications. LA - English DB - MTMT ER - TY - CHAP AU - Sőrés, Milán Attila AU - Hartmann, Bálint ED - Zhigniew, Leonowicz TI - Overview of possible methods of determining self-discharge T2 - 2020 IEEE International Conference on Environment and Electrical Engineering and 2020 IEEE Industrial and Commercial Power Systems Europe (EEEIC / I&CPS Europe) PB - IEEE CY - Piscataway (NJ) SN - 9781728174556 PY - 2020 PG - 5 DO - 10.1109/EEEIC/ICPSEurope49358.2020.9160787 UR - https://m2.mtmt.hu/api/publication/31400766 ID - 31400766 AB - In the last decade batteries especially li-ion batteries spread in e-mobility and stationary energy storage industries. During their operation it is essential to provide a proper SOC and SOH estimation. There are several modelling options for estimating different state related values of a battery. In this paper the self-discharge phenomenon is in focus, the causes of the capacity fade, and the possibility to use this in estimators, and the possible connection to the useful lifetime of a battery. The authors therefore will summarize the research on this field from the recent years. LA - English DB - MTMT ER - TY - CHAP AU - Sőrés, Milán Attila AU - Hartmann, Bálint TI - Effects of periodically changing load on Li-ion battery cells T2 - 2019 7th International Youth Conference on Energy (IYCE) PB - IEEE CY - Bled SN - 1728139236 PY - 2019 PG - 5 DO - 10.1109/IYCE45807.2019.8991601 UR - https://m2.mtmt.hu/api/publication/31186570 ID - 31186570 N1 - Scopus:hiba:85080883085 2022-10-12 15:53 befoglaló egyiknél nincsenek szerzők AB - The aim of our research is to identify the effect of periodically changing load on the available capacity and state-of-health of a selected battery cell. In this paper the discharge current changed between 1C and 2C, so the profile was created by the switch of the load. Two different measurements were performed, with both periodically changing resistance and current. For comparison a reference cell was also measured with constant resistance and discharging current. In case of the constant current it was 1C while the constant resistance was calculated so that the current of the cell was around 1C. The effects of the ambient temperature were the same to both cells, and to obtain more information on the behavior of measured cells, it was recorded as well. During the measurement, effects of four different switching frequencies were examined on the available capacity and state-of-health. Altogether ten measurements were performed in case of each switching frequency, each of them preceded by a reference measurement with 1C discharge to compare the capacity change of the reference and measured cell. As the discharge capacity is affected by the charging current both cells were charged in the same way with 1C constant current-constant voltage method. LA - English DB - MTMT ER -