Modeling of Battery Electric Vehicles for Degradation Studies

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Abstract

The paper characterizes dynamics and modelling of a Lithium-ion battery. Theoretical formulation and literature review are combined to derive the necessary battery characterization. The three main dynamics for modeling the battery are: direct-current electrical equivalent circuit, state-ofcharge (SOC) and thermal dynamic. Furthermore, the capacity fade caused by degradation is considered as a fourth dynamic. Degradation is considered as the sum of calendar aging and cycling loss dynamics. The modeling procedure has general validity and can be used for different battery chemistries by changing specific parameters. The model is tailored for a 40 kWh Lithium Nickel Manganese Cobalt (NMC) Oxide battery, which is currently used in the Nissan LEAF 2018. Considering a user driving 45 km/day and the temperature of the years 2017 and 2018 in Denmark, the battery capacity fade is found to be between 2 and 5% of the battery capacity after two years of use.
Degradation is highly dependent on the average level of SOC during the years.
Original languageEnglish
Title of host publicationProceedings of the 54th International Universities Power Engineering Conference
Number of pages6
PublisherIEEE
Publication statusAccepted/In press - 2019
Event54th International Universities Power Engineering Conference - University POLITEHNICA of Bucharest , Bucharest, Romania
Duration: 3 Sep 20196 Sep 2019
http://upec2019.com/

Conference

Conference54th International Universities Power Engineering Conference
LocationUniversity POLITEHNICA of Bucharest
CountryRomania
CityBucharest
Period03/09/201906/09/2019
Internet address

Keywords

  • Electric Vehicles
  • NMC Batteries
  • Thermo-Electrical Model
  • Capacity Fade

Cite this

Calearo, L., Thingvad, A., & Marinelli, M. (Accepted/In press). Modeling of Battery Electric Vehicles for Degradation Studies. In Proceedings of the 54th International Universities Power Engineering Conference IEEE.
Calearo, Lisa ; Thingvad, Andreas ; Marinelli, Mattia. / Modeling of Battery Electric Vehicles for Degradation Studies. Proceedings of the 54th International Universities Power Engineering Conference. IEEE, 2019.
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title = "Modeling of Battery Electric Vehicles for Degradation Studies",
abstract = "The paper characterizes dynamics and modelling of a Lithium-ion battery. Theoretical formulation and literature review are combined to derive the necessary battery characterization. The three main dynamics for modeling the battery are: direct-current electrical equivalent circuit, state-ofcharge (SOC) and thermal dynamic. Furthermore, the capacity fade caused by degradation is considered as a fourth dynamic. Degradation is considered as the sum of calendar aging and cycling loss dynamics. The modeling procedure has general validity and can be used for different battery chemistries by changing specific parameters. The model is tailored for a 40 kWh Lithium Nickel Manganese Cobalt (NMC) Oxide battery, which is currently used in the Nissan LEAF 2018. Considering a user driving 45 km/day and the temperature of the years 2017 and 2018 in Denmark, the battery capacity fade is found to be between 2 and 5{\%} of the battery capacity after two years of use.Degradation is highly dependent on the average level of SOC during the years.",
keywords = "Electric Vehicles, NMC Batteries, Thermo-Electrical Model, Capacity Fade",
author = "Lisa Calearo and Andreas Thingvad and Mattia Marinelli",
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booktitle = "Proceedings of the 54th International Universities Power Engineering Conference",
publisher = "IEEE",
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}

Calearo, L, Thingvad, A & Marinelli, M 2019, Modeling of Battery Electric Vehicles for Degradation Studies. in Proceedings of the 54th International Universities Power Engineering Conference. IEEE, 54th International Universities Power Engineering Conference , Bucharest, Romania, 03/09/2019.

Modeling of Battery Electric Vehicles for Degradation Studies. / Calearo, Lisa; Thingvad, Andreas; Marinelli, Mattia.

Proceedings of the 54th International Universities Power Engineering Conference. IEEE, 2019.

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

TY - GEN

T1 - Modeling of Battery Electric Vehicles for Degradation Studies

AU - Calearo, Lisa

AU - Thingvad, Andreas

AU - Marinelli, Mattia

PY - 2019

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N2 - The paper characterizes dynamics and modelling of a Lithium-ion battery. Theoretical formulation and literature review are combined to derive the necessary battery characterization. The three main dynamics for modeling the battery are: direct-current electrical equivalent circuit, state-ofcharge (SOC) and thermal dynamic. Furthermore, the capacity fade caused by degradation is considered as a fourth dynamic. Degradation is considered as the sum of calendar aging and cycling loss dynamics. The modeling procedure has general validity and can be used for different battery chemistries by changing specific parameters. The model is tailored for a 40 kWh Lithium Nickel Manganese Cobalt (NMC) Oxide battery, which is currently used in the Nissan LEAF 2018. Considering a user driving 45 km/day and the temperature of the years 2017 and 2018 in Denmark, the battery capacity fade is found to be between 2 and 5% of the battery capacity after two years of use.Degradation is highly dependent on the average level of SOC during the years.

AB - The paper characterizes dynamics and modelling of a Lithium-ion battery. Theoretical formulation and literature review are combined to derive the necessary battery characterization. The three main dynamics for modeling the battery are: direct-current electrical equivalent circuit, state-ofcharge (SOC) and thermal dynamic. Furthermore, the capacity fade caused by degradation is considered as a fourth dynamic. Degradation is considered as the sum of calendar aging and cycling loss dynamics. The modeling procedure has general validity and can be used for different battery chemistries by changing specific parameters. The model is tailored for a 40 kWh Lithium Nickel Manganese Cobalt (NMC) Oxide battery, which is currently used in the Nissan LEAF 2018. Considering a user driving 45 km/day and the temperature of the years 2017 and 2018 in Denmark, the battery capacity fade is found to be between 2 and 5% of the battery capacity after two years of use.Degradation is highly dependent on the average level of SOC during the years.

KW - Electric Vehicles

KW - NMC Batteries

KW - Thermo-Electrical Model

KW - Capacity Fade

M3 - Article in proceedings

BT - Proceedings of the 54th International Universities Power Engineering Conference

PB - IEEE

ER -

Calearo L, Thingvad A, Marinelli M. Modeling of Battery Electric Vehicles for Degradation Studies. In Proceedings of the 54th International Universities Power Engineering Conference. IEEE. 2019