Patent ID: 9500680
Filing Date: 2016-11-22
CPC Classification: B60L,G01R,Y02T

Claim Text:
1. A method for checking safe isolation of a low-voltage electrical distribution system from a high-voltage power supply in a high-voltage electrical system in an electric or hybrid vehicle, the method comprising: using at least two of a plurality of control devices in the high-voltage system to detect, independently of one another, a voltage on high-voltage lines in the high-voltage system and indicate whether the respectively measured voltages are above or below a threshold voltage value or whether a fault has occurred in the measurement; determining whether there is safe isolation of the low-voltage electrical distribution system from the high-voltage power supply using the at least two of the plurality of control devices based on the detected voltage on the high-voltage lines in the high-voltage system measured by the at least two of the plurality of control devices; and displaying an indication of the determined safe isolation of the low-voltage electrical distribution system from the high-voltage power supply on at least one display unit, wherein the displaying of the indication of the determined safe isolation is performed only in response to and based on the determination of the safe isolation performed based on the at least two of the plurality of control devices all detecting a voltage below the threshold voltage value.