DEVICE AND METHOD FOR DIAGNOSING INSULATION RESISTANCE MEASUREMENT CIRCUIT

摘要

The present invention relates to an insulation resistance measurement circuit diagnosing device and method and, more particularly, to an insulation resistance measurement circuit diagnosing device and method for diagnosing an insulation resistance measurement circuit of a battery cell or a battery module. In addition, according to an aspect of the present invention, when a state of an insulation resistance measurement circuit is diagnosed, a voltage ratio based on an estimated voltage value and a measured voltage value of a battery module is used, so that the state of the insulation resistance measurement circuit can be diagnosed more diversely and accurately.