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http://elib.uni-stuttgart.de/handle/11682/15500
Authors: | Oehl, Joachim Gleiter, Andreas Manka, Daniel Fill, Alexander Birke, Kai Peter |
Title: | A high frequency alternating current heater using the advantages of a damped oscillation circuit for low voltage Li-ion batteries |
Issue Date: | 2024 |
metadata.ubs.publikation.typ: | Zeitschriftenartikel |
metadata.ubs.publikation.seiten: | 2828-2841 |
metadata.ubs.publikation.source: | Energy advances 3 (2024), S. 2828-2841 |
URI: | http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-ds-155000 http://elib.uni-stuttgart.de/handle/11682/15500 |
ISSN: | 2753-1457 |
Abstract: | In many cases, batteries used in light e-mobility vehicles such as e-bikes and e-scooters do not have an active thermal management system. This poses a challenge when these batteries are stored in sub-zero temperatures and need to be charged. In such cases, it becomes necessary to move the batteries to a warmer location and allow them to acclimatize before charging. However, this is not always feasible, especially for batteries installed permanently in vehicles. In this work, we present an internal high-frequency AC heater for a 48 V battery, which is used for light electric vehicles of EU vehicle classes L1e and L3e-A1 for a power supply of up to 11 kW. We have taken advantage of the features of a damped oscillating circuit to improve the performance of the heater. Additionally, only a small inductor was added to the main current path through a cable with three windings. Furthermore, as the power electronics of the heater is part of the battery main switch, fewer additional parts inside the battery are required and therefore a cost and space reduction compared to other heaters is possible. For the chosen setup we reached a heating rate of up to 2.13 K min -1 and it was possible to raise the battery temperature from -10 °C to 10 °C using only 3.1% of its own usable capacity. |
Appears in Collections: | 05 Fakultät Informatik, Elektrotechnik und Informationstechnik |
Files in This Item:
File | Description | Size | Format | |
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D4YA00303A.pdf | 1,48 MB | Adobe PDF | View/Open |
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