Patent ID: 9335381
Filing Date: 2016-05-10
CPC Classification: G01R,H01M,Y02E

Claim Text:
1. A voltage monitoring apparatus for a plural battery, the plural battery outputting a required voltage and connecting a plurality of cells in series, and the apparatus monitoring an abnormality in an output voltage of each of the cells, the apparatus comprising: a voltage abnormality detector provided for each of a plurality of blocks into which the plurality of cells are divided, the voltage abnormality detector detecting a voltage abnormality in each of the cells contained in the block, the voltage abnormality detector including: a monitoring unit determining whether or not the individual voltage abnormality detector is normally operating according to the digital determination signal and analog determination signal, wherein the monitoring unit confirms whether information about overcharge and overdischarge of the cells derived from the digital determination signal agrees or disagrees with information about overcharge and overdischarge of the cells derived from the analog determination signal, and based on the confirmation, determines whether or not a communication error is occurring in a communication line between the voltage abnormality detector and the monitoring unit.