The Transition of Electric Vehicle Communication Architectures from CAN to Diagnostic Over IP Protocols and 48-Volt Power Systems

Sunil Sharma

Citation: Sunil Sharma, "The Transition of Electric Vehicle Communication Architectures from CAN to Diagnostic Over IP Protocols and 48-Volt Power Systems", Universal Library of Engineering Technology, Volume 03, Issue 02.

Copyright: This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The article examines the transition of electric vehicle communication and low-voltage power architectures from the Controller Area Network bus and the 12-volt subsystem to Diagnostics over Internet Protocol and 48-volt solutions as a regular stage in the evolution of software-defined transportation. The relevance of the study is determined by the growth in the number of electronic control units, the increase in telemetry volume, the spread of over-the-air updates, remote diagnostics, and connected services, which create new requirements for bandwidth, scalability, maintainability, and security of the onboard architecture. The aim of the article is to substantiate the engineering logic of this transition and to identify its technical and production effects. The scientific novelty of the article lies in the joint consideration of communication and power modernization of the electric vehicle within a single systemic requirements framework. It is shown that the most rational form of transformation is a hybrid architecture in which local control loops remain with CAN, while diagnostics, reflashing, and exchange of large data packets are transferred to the DoIP environment. It is established that introducing a 48-volt subsystem reduces current loads and wiring mass. In addition, a phased roadmap for the transition to the new architecture is proposed. The article will be useful to researchers, automotive electronics engineers, developers of electric vehicle architecture, manufacturers, and component suppliers.


Keywords: Electric Vehicle, Onboard Architecture, CAN, DoIP, 48-Volt Subsystem.

Download doi https://doi.org/10.70315/uloap.ulete.2026.0302003