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Electrical Engineering and Systems Science > Systems and Control

arXiv:2308.15828 (eess)
[Submitted on 30 Aug 2023 (v1), last revised 5 Feb 2024 (this version, v2)]

Title:Round-Trip Energy Efficiency and Energy-Efficiency Fade Estimation for Battery Passport

Authors:Camiel Beckers (1), Erik Hoedemaekers (1), Arda Dagkilic (2), Henk Jan Bergveld (3 and 4) ((1) TNO - Powertrains Dept., (2) VDL Enabling Transport Solutions, (3) Eindhoven University of Technology - Dept. of Electrical Engineering, (4) NXP Semiconductors)
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Abstract:The battery passport is proposed as a method to make the use and remaining value of batteries more transparent. The future EU Battery Directive requests this passport to contain the round-trip energy efficiency and its fade. In this paper, an algorithm is presented and demonstrated that estimates the round-trip energy efficiency of a battery pack. The algorithm identifies round trips based on battery current and SoC and characterizes these round trips based on certain conditions. 2D efficiency maps are created as a function of the conditions `temperature' and `RMS C-rate'. The maps are parameterized using multiple linear regression, which allows comparison of the efficiency under the same conditions. Analyzing data from three battery-electric buses over a period of 3.5 years reveals an efficiency fade of up to 0.86 percent point.
Comments: 6 pages, 5 figures, presented at VPPC 2023
Subjects: Systems and Control (eess.SY)
Cite as: arXiv:2308.15828 [eess.SY]
  (or arXiv:2308.15828v2 [eess.SY] for this version)
  https://doi.org/10.48550/arXiv.2308.15828
Related DOI: https://doi.org/10.1109/VPPC60535.2023.10403325

Submission history

From: Camiel Beckers [view email]
[v1] Wed, 30 Aug 2023 08:05:58 UTC (702 KB)
[v2] Mon, 5 Feb 2024 09:38:30 UTC (702 KB)
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