Communications concerns for reused electric vehicle batteries in smart grids

Abstract

Electric vehicles use 10 to 25 kWh batteries. After their use in cars, these batteries are still in good condition to be used for energy storage in stationary applications and smart grid systems at all stages: generation, transmission, and distribution. However, before their reuse, there are some changes to be made on these batteries, such as those concerning communications. Electric vehicle batteries use a battery management system that controls functionality and safety, transmitting their condition and status, but also containing confidential information. This article studies two strategies to deal with communications difficulties in their second life as storage energy devices.