Electric vehicles have high-voltage battery packs rated at over 200 volts to generate enough power to drive their motors. These high-voltage battery packs contain many low-voltage battery cells connected in series. The Battery Monitoring Unit monitors the voltage and temperature of the individual low-voltage battery cells. In other words, this unit constantly assesses the state of the battery cells. BMU detects a battery's voltage, current, temperature, and other parameters to enable high-voltage batteries to be used safely and efficiently.
An electric vehicle (EV), also referred to as an electric drive vehicle, uses one or more electric motors or traction motors for propulsion. An electric vehicle may be powered through a collector system by electricity from off-vehicle sources, or may be self-contained with a battery or generator to convert fuel to electricity. EVs include road and rail vehicles, surface and underwater vessels, electric aircraft and electric spacecraft.