Development of Digital Twin Platform for Electric Vehicle Battery System
Putu Handre Kertha Utama (a), Irsyad Nashirul Haq (b*), Edi Leksono (c), Muhammad Iqbal Juristian (d), Ghulam Azka Alim (e), Justin Pradipta (f)

(a,b,c,d,e,f) Department of Engineering Physics, Faculty of Industrial Technology, Institut Teknologi Bandung, Indonesia
(b) National Center for Sustainable Transportation Technology, Indonesia
*irsyad.n[at]itb.ac.id

Abstract

The battery system in electric vehicles needs proper monitoring and control to ensure reliable, efficient, and safe operation. Recent advancement in cyber-physical technology has brought the emerging digital twin concept. This concept opens a new possibility of real-time state estimation, condition monitoring and fault diagnosis of the battery system. Although it sounds promising, the implementation of this concept still faces many challenges.
One of the challenges is the availability of a platform to develop digital twins, which involves data pipeline and modeling tools. The data pipeline will include the acquisition, storing, and extract-transform-load (ETL) with high velocity, volume, value, variety, and veracity data, well known as big data. The modeling tools must provide applications to build the high-fidelity model, one of the required elements of the digital twin.
Based on those urgencies, this paper proposes a platform that facilitates a digital twinning of the battery system in electric vehicle. The platform builds on the open-source framework CDAP, equipped with a data pipeline and modeling tools. It has run several performance tests with different computation resource configurations and workloads. Doubling the processing power can reduce 12% of computation time while increasing memory size by four times only reduces 10% of computation time. The result shows that the performance digital twin platform is affected more by the processing power than the memory size.

Keywords: Digital Twin, Electric Vehicle, CDAP, Big Data, Battery System, State Estimation

Topic: Battery Technology and Management System