Device for limiting current of multicellular battery of vehicle, has calculation unit estimating limit-current that is acceptable for battery according to current set-point, minimum and maximum current, and minimum and maximum voltage

摘要

The device (D) has a calculation unit (MC1) estimating intermediate minimal voltage and maximum voltage according to voltages that are measured at respective voltage terminals. Another calculation unit (MC2) estimates limit current acceptable for a battery (BA) according to a current set-point, the intermediate minimal voltage and maximum voltage, minimum current (Imin), maximum current (Imax), minimum voltage (Vmin) and maximum voltage (Vmax). Energy storage cells of the battery are crossed by current comprised between the minimum current and maximum current.