ELECTRIC VEHICLE BATTERY TEST

摘要

An adaptive and adjustable isolation fault testing of a multi-string battery of an electric vehicle is disclosed. The isolation fault testing can be performed in an adjustable or predetermined loop having dedicated time windows for respective battery strings in compliance with the system requirements, specification, and regulatory regime.

主权项

1. An electric vehicle comprising:
a motor coupled to one or more wheels of the electric vehicle; an inverter coupled to the motor; at least a first power bus coupled to the inverter; and a first battery string having an output that is coupled to the first power bus through a first switch, at least a second battery string different from the first battery string having an output that is coupled to the first power bus through a second switch different from the first switch; a battery management circuit coupled to at least the first switch and the second switch, the battery management circuit configured to selectively and independently control the open or closed state of the first switch and the second switch, the battery management system further configured to perform isolation fault testing on the first battery string and the second battery string in different time windows.