XIICLEEE - 12th Portuguese-Spanish Conference on Electrical Engineering XIICLEEE_1846 锂电欧亿·体育（中国）有限公司分享 Q群：103946996 Lithium Modular Battery Bank for Electric Vehicles Luís Marques1, Verónica Vasconcelos1, Paulo G. Pereirinha1,2,3, Jo?o P. Trov?o1,2 1IPC/ISEC, Polytechnic Institute of Coimbra, R. Pedro Nunes, P-3030-199 Coimbra, Portugal 2Institute for Systems and Computers Engineering at Coimbra (INESC-Coimbra), Portugal 3APVE, Portuguese Electric Vehicle Association. lmarques, veronica, ppereiri, jptrovao@isec.pt Abstract - In electric vehicles, battery management is of electric motor, recovering energy from regenerative braking, utmost importance. Since the batteries are the most expensive and limiting factor that prevents the massive deployment of EV’s, bounds in order to assure their longevity. The electronic special care must be taken to ensure that the batteries pack or in the charging process, to ensure that they work within system responsible for this task, built around a low cost 8 bit supply the maximum possible energy, guaranteeing also reliability and longevity of this critical element. In this article it is microcontroller, is presented is this article. It monitors a 4 presented a modular battery bank intended to be used in electric cells module (equivalent to a 12V battery) and shares all the vehicles, that can be easily connected to the data and control network of the vehicle in order to share all battery relevant information, namely state of charge and critical values, like low or excessive temperature or voltage.