In the last years electric vehicles (EV) have gained a large share of the market, due to the problems of environment pollution and energy saving. Thanks to their high-performance properties and good knowledge, the majority of EVs employ as energy source lithium-ion batteries which require a reliable control system to guarantee an optimal management and ensure proper operation inside the battery, avoiding dangerous situations which could seriously damage their operational capacity and drastically reduce their lives. This thesis is addressed to achieve these goals through the creation of our own battery management system (BMS), able to monitor the key parameters and activate whenever one of them is captured with values out of the range.