Method for detection and disconnection of electrical short circuit or arc for vehicle e.g. electric vehicle, involves adjusted switching element within second voltage level based on short circuit or arc detected between voltage levels

摘要

The method involves detecting current and/or voltage variations of first voltage level to electrical first operating voltage (U1) and second voltage level to second operating voltage (U2), where the second voltage level is greater than first voltage level. A switching element (4) within the second voltage level is controlled based on the short circuit or arc detected between voltage levels, such that a current flow within the second voltage level is stopped. An independent claim is included for energy storage device for multiple-voltage electrical system for vehicle.