| 摘要 |
PROBLEM TO BE SOLVED: To provide a battery deterioration determining device that can determine the deterioration state of a battery with high precision.SOLUTION: PC executes control processing containing a step (S100) of calculating an inner pressure increase amount P, a step (S102) of calculating an inner pressure variation amount ΔP, a step (S104) of calculating a first deterioration estimation value D1, a step (S106) of calculating a second deterioration estimation value D2, a step (S110) of calculating a transmission amount H when D1+D2 is not more than a threshold value A (YES in S108), a step (S114) of calculating a compression permanent distortion amount H' when the transmission amount H is not more than a threshold value B (YES in S112), and a step (S118) of determining that a battery can be shipped as a secondhand battery when the compression permanent distortion amount H' is not more than a threshold value C (YES in S116).SELECTED DRAWING: Figure 15 |
