Patent ID: 8653841
Filing Date: 2014-02-18
Classification: B60L,Y02T

Abstract:
1. A high-voltage discharge circuit diagnostic system, comprising: a high voltage DC link including a positive DC link and a negative DC link; a first resistor selectably connectable between the positive DC link and the negative DC link; a second resistor connected between the positive DC link and the negative DC link; a control module that connects the first resistor between the positive DC link and the negative DC link until the high voltage DC link discharges to a first voltage, after which the control module disconnects the first resistor from between the positive DC link and the negative DC link to permit continued discharge of the high voltage DC link through the second resistor to a second voltage through an elapsed time period, whereafter the control module diagnoses a fault in the second resistor based upon the first voltage, the second voltage, and the elapsed time period.