Integrated circuits enable a smarter battery

Abstract

Embedding sensors into lithium-ion batteries (LIBs) is the key to enabling early failure warnings for electric vehicle power supply, but it suffers from two challenges, i.e., maintaining battery integrity and effectively transmitting internal signals outside. Recently, Chen et al. designed a microelectromechanical system (MEMS) sensor, one kind of integrated circuit, which can be embedded less invasively into both prismatic and cylindrical batteries and can simultaneously monitor their internal thermal and mechanical signals. Moreover, it can wirelessly transmit internal signals outside batteries through electrode tabs using power line communication technology. This work paves the way to developing a smarter battery with favorable safety.