BATTERY DETERIORATION JUDGING SYSTEM, BATTERY DETERIORATION JUDGING METHOD, AND BATTERY DETERIORATION JUDGING PROGRAM

摘要

A battery deterioration judging system (10) comprises an acquiring section (22, 30), a first deriving section (41), a reliability degree deriving section (36), a second deriving section (42), and a judging section (44). The acquiring section (22, 30) acquires a state amount of a battery (20). The first deriving section (41) derives a first deterioration probability of the battery (20), based on the state amount of the battery (20) acquired by the acquiring section (22, 30) and a predetermined first calculation model. The reliability degree deriving section (36) derives a reliability degree of a second calculation model, which is different than the first calculation model, based on a number of state amounts acquired by the acquiring section (22, 30). The second deriving section (42) derives a second deterioration probability of the battery (20), based on the state amount of the battery (20) acquired by the acquiring section (22, 30) and the second calculation model. The judging section (44) judges deterioration of the battery (20) based on the reliability degree, and at least one of the first deterioration probability or the second deterioration probability.