Abstract: A negative electrode for a secondary battery in which a negative electrode active material layer is formed on at least one surface of a current collector. The continuous adhesive force in the thickness direction of the negative electrode for the secondary battery is 30 gf/20 mm or more, and/or the breaking stress of the negative electrode is 3.6 N or more. The breaking stress is a value measured by pressing the negative electrode active material layer with a linear tip having a width of 2.5 mm and a sharp end at a speed of 10 ?m/s.

Abstract: A battery management apparatus according to an embodiment of the present disclosure includes: a feature value extracting unit configured to extract a feature value of a learning battery at every charging and discharging cycle; a first state judging unit configured to judge a state of the learning battery at every charging and discharging cycle, based on the feature value extracted by the feature value extracting unit and a criterion value preset to correspond to the feature value; a labelling unit configured to set a label for the feature value of the learning battery at every charging and discharging cycle, based on the state of the learning battery judged by the first state judging unit; a model learning unit configured to learn a classification model for judging a state of an analysis battery based on the feature value for which the label is set by the labelling unit; and a second state judging unit configured to judge the state of the analysis battery based on the classification model learned by the model