| CPC H01M 10/0562 (2013.01) [H01M 4/134 (2013.01); H01M 4/485 (2013.01); H01M 4/621 (2013.01); H01M 10/0585 (2013.01); H01M 50/531 (2021.01); H01M 50/586 (2021.01); H01M 50/59 (2021.01); H01M 2004/027 (2013.01); H01M 2004/028 (2013.01); H01M 10/0525 (2013.01)] | 20 Claims |
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1. A solid state battery comprising:
a solid state battery laminate comprising, along a stacking direction thereof, at least one battery constituent unit having a positive electrode layer, a negative electrode layer, and a solid electrolyte layer interposed between the positive electrode layer and the negative electrode layer;
a positive electrode external terminal on a first side surface of the solid state battery laminate; and
a negative electrode external terminal on a second side surface of the solid state battery laminate opposite the first side surface,
wherein the positive electrode layer and the negative electrode layer each include a terminal contact portion in direct contact with the positive electrode external terminal and the negative electrode external terminal, respectively, and a non-terminal contact portion that is not in direct contact with the positive electrode external terminal and the negative electrode external terminal, respectively, and
in both of the positive electrode layer and the negative electrode layer, a sectional area of the terminal contact portion along the respective first or second side surfaces of the solid state battery laminate is smaller than a sectional area of the non-terminal contact portion along the respective first or second side surfaces.
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