Strategische Technologiebewertung in der Konzeptphase der Batterieentwicklung

RWTH Publications (RWTH Aachen)

Abstract

The thesis develops a systematic methodology for strategic technology assessment in battery development during the concept phase of electric vehicles. Given multi-year development processes and substantial cost and time increases resulting from late-stage modifications, this work addresses the challenge of anticipating technological developments in later product lifecycle stages during the initial concept phase. Through interviews, four central action requirements were identified: insufficient consideration of implement ability in requirement definition, late product modifications, high resource demands due to adaptations, and experience-based evaluation of technological concept work with limited objectivity. The initiation module of the methodology systematically converts various user groups into quantified battery system requirements through personas. Requirement corridors enable variant consideration in this process. The analysis module identifies technological solution options through systematic technology screening and structures available battery cell technologies within a morphological box. A multiphysical modeling framework integrates electrical, thermal, and mechanical domains, with particular attention devoted to thermal modeling as a critical path. The design module leads to final concept specification through iterative concept design and optimization using detailed multiphysical models. Validation was conducted using real vehicle systems across different segments, whereby the modeling successfully identified the actually implemented cell types and system configurations in all cases. Energy consumption can be predicted, while thermal modeling reliably identifies critical operating conditions.

Authors 1

1. Moritz Holger Frieges corresponding Aachen

   RWTH Aachen University

   Affiliation as printed

   RWTH Aachen