BATTERY DETERIORATION DETERMINATION DEVICE, BATTERY PACK, BATTERY DETERIORATION DETERMINATION METHOD AND BATTERY DETERIORATION DETERMINATION PROGRAM

PROBLEM TO BE SOLVED: To provide a battery deterioration determination device, a battery pack, a battery deterioration determination method and a battery deterioration determination program which facilitate recognition of a degradation state of a battery pack.SOLUTION: A correlation storage part 15 stores in advance a correlation between a resistance value for evaluation and a discharge capacity for evaluation. A measurement part 11 measures a voltage and a current supplied from a battery pack 2. A discharge capacity calculation part 12 and an apparent resistance value calculation part 13 respectively calculate, based on the measured voltage and current, a discharge capacity and a resistance value of the battery pack 2. An resistance value for evaluation acquisition part 14 acquires the resistance value for evaluation based on a relationship between the calculated discharge capacity and resistance value of the battery pack 2. An apparent discharge capacity acquisition part 16 acquires the discharge capacity for evaluation of the battery pack 2 based on the acquired resistance value for evaluation and the correlation stored in the correlation storage part 15.SELECTED DRAWING: Figure 1 【課題】組電池の劣化状態の把握を容易にする電池劣化判定装置、組電池、電池劣化判定方法及び電池劣化判定プログラムを提供する。【解決手段】相関関係記憶部１５は、評価用抵抗値と評価用放電容量との相関関係を予め記憶する。計測部１１は、組電池２から供給される電圧及び電流を計測する。放電容量算出部１２及び見かけの抵抗値算出部１３は、計測された電圧及び電流を基に、組電池２の放電容量及び抵抗値を算出する。評価用抵抗値取得部１４は、算出された組電池２の放電容量及び抵抗値の関係を基に前記評価用抵抗値を取得する。見かけの放電容量取得部１６は、取得された評価用抵抗値及び相関関係記憶部１５に記憶されている相関関係を基に、組電池２の評価用放電容量を求める。【選択図】図１