Patent ID: 9494653
Filing Date: 2016-11-15
CPC Classification: G01R

Claim Text:
1. A battery pack monitoring apparatus comprising: a battery cell voltage detection section for detecting a voltage of each of serially connected battery cells constituting a battery pack through detection lines connected to both electrodes of each of the battery cells; a battery pack voltage detection section for detecting a voltage of the battery pack through the detection line on a highest potential side of the battery pack and the detection line on a lowest potential side of the battery pack; diodes each being connected in parallel to the battery cell on the highest potential side of the battery pack and the battery cell on the lowest potential side of the battery pack in a forward direction from a negative electrode toward a positive electrode of each of the battery cells; and a line breakage determining section for determining that one of the detection line on the highest potential side and the detection line on the lowest potential side is broken when a sum of the voltage of each of the battery cells detected by the battery cell voltage detection section and the voltage of the battery pack detected by the battery pack voltage detection section are not equal to each other.