Alexander Fill

Ph.D. Student, Research and Development Daimler AG

Agenda Day 2

2:30 PM Data-based fault detection – Detachment of a parallel-connected cell

In order to meet the power and energy requirements of large-scale applications such as electric vehicles, lithium-ion cells are usually connected in parallel. This connection enables a closed circuit even if one or more cells within the parallel configuration are disconnected. This type of connection fault can lead to electrical and thermal overload of the remaining former parallel-connected cells. A data-based algorithm is shown which detects and localizes this connection error via voltage measurements. The algorithm is validated by measurements on a module of three serial-connected cells, each consisting of two parallel-connected 50 Ah pouch cells. Under typical driving loads an interruption is detected in less than 20 seconds.

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IQPC Gesellschaft für Management Konferenzen mbH
Adresse: Rosenstrasse 2, 10178 Berlin, Germany
Telefonnummer: 030 52001534
Email Adresse: info@iqpc.de
Registereintragungen: Amtsgericht Charlottenburg HRB 76720
Umsatzsteuer- Indentifikationsnummer DE210454451
Geschäftsführung: Torben Haagh, Richard A. Worden, Michael R. Worden