Modelling and evaluation of battery packs with different number of paralleled cells

Fengqi Chang, Felix Roemer, Michael Baumann, Markus Lienkamp

Research output: Contribution to conferencePaperpeer-review

Abstract

To better evaluate the configuration of battery packs in electric vehicles (EV) in the early design phase, this paper proposes a mathematic model for the simulation of battery packs based on the elementwise calculations of matrices. This model is compatible with the different battery models and has a fast simulation speed. An experimental platform is built for the verification. Based on the proposed model and the statistic features of battery cells, the influence of the number of paralleled cells in a battery pack is evaluated in Monte-Carlo experiments. The simulation results obtained from Monte-Carlo experiments show that the parallel number is able to influence the total energy loss inside the cells, the energy loss caused by the balancing of the battery management system (BMS) and the degradation of the battery pack.

Original languageEnglish
StatePublished - 2017
Event30th International Electric Vehicle Symposium and Exhibition, EVS 2017 - Stuttgart, Germany
Duration: 9 Oct 201711 Oct 2017

Conference

Conference30th International Electric Vehicle Symposium and Exhibition, EVS 2017
Country/TerritoryGermany
CityStuttgart
Period9/10/1711/10/17

Keywords

  • Battery model
  • Efficiency
  • Prediction
  • Simulation
  • State of charge

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