Method for determining the absence of voltage in a high-voltage electrical system and an electric high-voltage system

摘要

The invention relates to a method for determining the absence of voltage in an electrical high-voltage system (1), in particular in an electric or hybrid vehicle, by means of at least two control devices (3-5) in the high-voltage system (1) and at least one display unit (14, 16), wherein the control units (3-5) independently of each other detect the voltage in the high-voltage system (1), wherein on the display unit (14, 16) a voltage freedom is only displayed if both controllers (3-5) has a voltage below of a threshold, and a high-voltage electrical system (1).