METHOD AND SYSTEM FOR DETECTING CONNECTION FAULT OF PARALLEL CONNECTION CELL

Disclosed is a method and system for detecting connection failure of a parallel connected cell that provides improved accuracy by first detecting the cell connection failure due to the current interruption device (CID) operation of the battery or opening the parallel connection line for a battery that is being discharged by the operation of an external device, and confirming the first detection result through Direct Current Internal Resistance (DCIR) measurement for the battery.