Patent ID: 7710120
Filing Date: 2010-05-04
Classification: G01R,H02J,Y02T

Abstract:
1. An abnormal voltage detector apparatus for use in an assembled battery comprising a plurality of battery blocks connected in series to each other, said abnormal voltage detector apparatus detecting voltage abnormality in said assembled battery, each battery block comprising at least one secondary battery, said abnormal voltage detector apparatus comprising: a detecting part for detecting whether or not each of said battery blocks is in a voltage abnormality state by comparing either one of a voltage of said each battery block and each battery measuring voltage, which is a voltage lowered from the voltage of said each battery block, with a predetermined reference voltage, for generating each of abnormality detecting signals containing information about a detected result, for calculating a time ratio of a time interval, for which said assembled battery is in a voltage abnormality state, to a predetermined time interval, based on the abnormality detecting signals, and for detecting a voltage abnormality of said assembled battery based on a calculated time ratio, wherein said detecting part includes: