@mastersthesis{MTMT:34735587,
	title = {Akkumulátor öregedési modellek villamosenergia-piaci környezetben},
	url = {https://m2.mtmt.hu/api/publication/34735587},
	author = {Sőrés, Milán Attila},
	publisher = {Budapest University of Technology and Economics},
	unique-id = {34735587},
	year = {2023}
}

@article{MTMT:34536297,
	title = {Exploration of Li-Ion Batteries during a Long-Term Heat Endurance Test Using 3D Temporal Microcomputed Tomography Investigation},
	url = {https://m2.mtmt.hu/api/publication/34536297},
	author = {Ballai, Gergő and Sőrés, Milán Attila and Vásárhelyi, Lívia and Szenti, Imre and Kun, Róbert and Hartmann, Bálint and Sebők, Dániel and Farkas, Ferenc and Zahoor, A. and Mao, G. and Sápi, András and Kukovecz, Ákos and Kónya, Zoltán},
	doi = {10.1002/ente.202300207},
	journal-iso = {ENERGY TECHNOL-GER},
	journal = {ENERGY TECHNOLOGY},
	volume = {11},
	unique-id = {34536297},
	issn = {2194-4288},
	year = {2023},
	eissn = {2194-4296},
	orcid-numbers = {Vásárhelyi, Lívia/0000-0001-8943-9500; Sebők, Dániel/0000-0001-9769-5598; Farkas, Ferenc/0000-0003-4508-7480; Sápi, András/0000-0001-6557-0731; Kukovecz, Ákos/0000-0003-0716-9557; Kónya, Zoltán/0000-0002-9406-8596}
}

@inproceedings{MTMT:34431571,
	title = {Nátrium-kén akkumulátor, mint hálózati energiatároló},
	url = {https://m2.mtmt.hu/api/publication/34431571},
	author = {Sőrés, Milán Attila and Kövesdi, Roland and Hartmann, Bálint},
	booktitle = {XIII. Mechwart András Ifjúsági Találkozó: Konferenciakiadvány},
	doi = {10.54232/MAIT.2023_10},
	unique-id = {34431571},
	year = {2023},
	pages = {118-127}
}

@article{MTMT:34395463,
	title = {Az akkumulátoros energiatárolás lehetőségei a hálózati szolgáltatások területén},
	url = {https://m2.mtmt.hu/api/publication/34395463},
	author = {Sőrés, Milán Attila and Hartmann, Bálint},
	journal-iso = {MAGY KEM LAP},
	journal = {MAGYAR KÉMIKUSOK LAPJA},
	volume = {78},
	unique-id = {34395463},
	issn = {0025-0163},
	year = {2023},
	eissn = {1588-1199},
	pages = {320-323}
}

@misc{MTMT:34052472,
	title = {Possibilities for automotive second life batteries in frequency regulation markets},
	url = {https://m2.mtmt.hu/api/publication/34052472},
	author = {Sőrés, Milán Attila},
	unique-id = {34052472},
	abstract = {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.},
	year = {2023}
}

@article{MTMT:33212863,
	title = {Prolonging battery lifetime in various energy markets},
	url = {https://m2.mtmt.hu/api/publication/33212863},
	author = {Sőrés, Milán Attila and Hartmann, Bálint},
	doi = {10.1016/j.est.2022.105959},
	journal-iso = {J ENERGY STORAGE},
	journal = {JOURNAL OF ENERGY STORAGE},
	volume = {56},
	unique-id = {33212863},
	issn = {2352-152X},
	abstract = {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.},
	year = {2022},
	eissn = {2352-1538}
}

@article{MTMT:32631735,
	title = {Analysis of the Relation between State of Health and Self-Discharge of Li-Ion Batteries},
	url = {https://m2.mtmt.hu/api/publication/32631735},
	author = {Sőrés, Milán Attila and Hartmann, Bálint},
	doi = {10.12700/APH.18.10.2021.10.12},
	journal-iso = {ACTA POLYTECH HUNG},
	journal = {ACTA POLYTECHNICA HUNGARICA},
	volume = {18},
	unique-id = {32631735},
	issn = {1785-8860},
	year = {2021},
	eissn = {1785-8860},
	pages = {225-244}
}

@inproceedings{MTMT:31814761,
	title = {Thermal analysis and simulation of PCM based cooling of li-ion battery cell},
	url = {https://m2.mtmt.hu/api/publication/31814761},
	author = {Sőrés, Milán Attila and Biró, Norbert and Örökös-Tóth, István},
	booktitle = {IX. Interdiszciplináris Doktorandusz Konferencia 2020 [9th Interdisciplinary Doctoral Conference 2020]},
	unique-id = {31814761},
	abstract = {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.},
	year = {2020},
	pages = {476-489}
}

@inproceedings{MTMT:31400766,
	title = {Overview of possible methods of determining self-discharge},
	url = {https://m2.mtmt.hu/api/publication/31400766},
	author = {Sőrés, Milán Attila and Hartmann, Bálint},
	booktitle = {2020 IEEE International Conference on Environment and Electrical Engineering and 2020 IEEE Industrial and Commercial Power Systems Europe (EEEIC / I&CPS Europe)},
	doi = {10.1109/EEEIC/ICPSEurope49358.2020.9160787},
	unique-id = {31400766},
	abstract = {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.},
	year = {2020}
}

@inproceedings{MTMT:31186570,
	title = {Effects of periodically changing load on Li-ion battery cells},
	url = {https://m2.mtmt.hu/api/publication/31186570},
	author = {Sőrés, Milán Attila and Hartmann, Bálint},
	booktitle = {2019 7th International Youth Conference on Energy (IYCE)},
	doi = {10.1109/IYCE45807.2019.8991601},
	unique-id = {31186570},
	abstract = {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.},
	year = {2019}
}