A cost-effective stimulus generator for battery channel characterization in electric vehicles

Shao Feng Hung*, Long Yi Lin, Hao-Chiao Hong

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The battery management system (BMS) is substantial in diagnosing and controlling the battery modules of emerging electric vehicles (EVs). This paper presents a cost-effective stimulus generator for characterizing the communication channels between the BMS host controller and the battery cells. The characterization data are useful to enhance the reliability of the communication. The proposed stimulus generator only consists of a digital oscillator, a reconfigurable digital ∑-Δ modulator, and an output driver. The all-digital design saves the power and the hardware cost. The digital oscillator provides digital sine waves with well-controlled frequency and amplitude. The proposed reconfigurable digital ∑-Δ modulator allows generating pulse-density-modulated (PDM) bit-streams of particular frequencies that cover the whole band of interest. Hence, the test accuracy is no less than that of conventional sinusoidal waves. Simulation results show that the generated stimuli have very high narrow-band SNRs that is essential to test the frequency responses of the channels.

Original languageEnglish
Title of host publicationProceedings - 23rd Asian Test Symposium, ATS 2014
PublisherIEEE Computer Society
Pages63-67
Number of pages5
ISBN (Electronic)9781479960309
DOIs
StatePublished - 7 Dec 2014
Event23rd Asian Test Symposium, ATS 2014 - Hangzhou, China
Duration: 16 Nov 201419 Nov 2014

Publication series

NameProceedings of the Asian Test Symposium
ISSN (Print)1081-7735

Conference

Conference23rd Asian Test Symposium, ATS 2014
CountryChina
CityHangzhou
Period16/11/1419/11/14

Keywords

  • Battery management system
  • Channel characterization
  • Power line communication
  • Reconfigurable ∑-Δ modulator
  • Stimulus generator

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