Patent ID: 11862788
Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A non-aqueous electrolyte secondary battery comprising:
an electrode body that has a structure in which a plurality of positive electrodes and negative electrodes are stacked via a separator; and
a non-aqueous electrolyte, wherein:
the positive electrode includes a positive electrode current collector and a positive electrode mixture layer provided on a surface of the positive electrode current collector in a stacking direction;
the positive electrode mixture layer is configured such that a mixture containing a positive electrode active material is formed therein, the positive electrode mixture layer having a positive non-forming portion in which the mixture containing the positive electrode active material is not formed;
the negative electrode includes a negative electrode current collector and a negative electrode mixture layer disposed on a surface of the negative electrode current collector in a stacking direction;
the negative electrode mixture layer is configured such that a mixture containing a negative electrode active material is formed therein, the negative electrode mixture layer having a negative non-forming portion in which the mixture containing the negative electrode active material is not formed; and
at least one of the positive non-forming portion and the negative non-forming portion has a resin portion substantially formed of a swellable resin having a property of swelling the non-aqueous electrolyte.