Diagnostic device for battery cells

Abstract

Battery cell diagnostic device comprising: at least one sensor; and a first control unit configured to receive data containing the voltage and / or current and / or temperature of a battery cell from which at least one sensor receives initial diagnostic information based on the received data, transmits the data to an external device, receives second diagnostic information of the battery cell based on the data from the external device, and diagnoses an abnormal condition of the battery cell based on the first diagnostic information and / or the second diagnostic information, wherein the first diagnostic information and the second diagnostic information contain information on diagnostic points that are diagnosed using various diagnostic procedures.