Battery degradation determination system, battery degradation determination apparatus, and battery degradation determination method

A battery degradation determination apparatus configured to perform degradation determination for a secondary battery, the battery degradation determination apparatus comprising a processor configured to:

• measure a charging and discharging characteristic value of the secondary battery;
• calculate a first equivalent circuit constant in an equivalent circuit in which a power supply is a main tank circuit including a first resistive element and a first capacitive element that are connected in parallel, based on the measured charging and discharging characteristic value;
• and
• perform the degradation determination for the secondary battery, based on at least the first equivalent circuit constant that is calculated.

A battery degradation determination method for a battery degradation determination system including a battery degradation determination apparatus configured to perform degradation determination for a secondary battery, the battery degradation determination method comprising:

• measuring, by the battery degradation determination apparatus, a charging and discharging characteristic value of the secondary battery;
• calculating, by the battery degradation determination apparatus, a first equivalent circuit constant in an equivalent circuit in which a power supply is a main tank circuit including a first resistive element and a first capacitive element that are connected in parallel, based on the measured charging and discharging characteristic value;
• and
• performing, by the battery degradation determination apparatus, the degradation determination for the secondary battery, based on at least the first equivalent circuit constant that is calculated.