Battery diagnosis apparatus and battery diagnosis method

A battery diagnosing method, comprising:

• obtaining a first profile representing a capacity-voltage relationship of a battery cell, the battery cell comprising at least two kinds of active materials;
• generating a plurality of comparison profile based on a plurality of electrode profiles included in an electrode profile map;
• selecting, as a second profile, one comparison profile from the plurality of comparison profiles by comparing each of the plurality of comparison profiles with the first profile;
• and
• determining at least one diagnostic factor representing a degradation state of the battery cell based on the second profile,
• wherein the electrode profile map includes a plurality of reference positive electrode profiles associated with a plurality of degradation states of a positive electrode of the battery cell, and
• wherein the at least two kinds of active materials are included in the positive electrode of the battery cell.

A non-transitory computer-readable medium storing instructions for diagnosing a battery cell, the instructions, when executed by one or more processors, causing the one or more processors to perform operations comprising:

• obtaining a first profile representing a capacity-voltage relationship of the battery cell, the battery cell comprising at least two kinds of active materials;
• generating a plurality of comparison profile based on a plurality of electrode profiles included in an electrode profile map;
• selecting, as a second profile, one comparison profile from the plurality of comparison profiles by comparing each of the plurality of comparison profiles with the first profile;
• and
• determining at least one diagnostic factor representing a degradation state of the battery cell based on the second profile,
• wherein the electrode profile map includes a plurality of reference positive electrode profiles associated with a plurality of degradation states of a positive electrode of the battery cell, and
• wherein the at least two kinds of active materials are included in the positive electrode of the battery cell.