POWER SUPPLY DEVICE FOR AN ELECTRIC LOAD OF A MOTOR VEHICLE WITH ELECTRIC PROPULSION MOTOR AND BRAKING SYSTEM FOR MOTOR VEHICLES EQUIPPED WITH SUCH A POWER SUPPLY DEVICE

摘要

A main battery (68) and fuel cell (72) supply an electric motor (76) which drives vehicle road wheels (54,56). Braking installations driven by electric motors (60,62,64,66) installed on all four wheels are normally supplied by a braking battery (84) but on failure of the battery a control unit (80) switches the braking supply circuit to some cells in the main battery