Reliable wireless communications in battery management system of electric vehicles

Recent works on enhancing comfortability and convenience of vehicles reveal the appeal of information collections by various wireless sensor nodes due to their ease of installation and their small size. Moreover, as it can be assumed that Electric Vehicles will spread in the future, their Battery Management System (BMS) must well handle battery cell information. Our approach uses wireless communication to provide the data links. We proposed a method to provide reliable multi-hop communications in a vehicle based on overhearing. This paper proposes to apply our method to the BMS as well as other sensor network. It means that all sensors communicate in a unified way. We evaluated the performance of our method by computer simulation. The results show that our method achieves a packet arrival ratio of about 99.48% within 20ms for BMS and a crew sensor network. The cause of delay in packet arrival is confirmed.