Nonaqueous electrolyte secondary battery and battery module
AssigneeKabushiki Kaisha Toshiba
InventorsNorio Takami, Hiroki Inagaki, Yoshinao Tatebayashi
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Abstract
A nonaqueous electrolyte secondary battery includes a case, a nonaqueous electrolyte provided in the case, a positive electrode provided in the case, and a negative electrode provided in the case, the negative electrode comprising a negative electrode current collector and a negative electrode layer that is carried on the negative electrode current collector and contains negative electrode active material particles, and the negative electrode current collector comprising an aluminum foil having an average crystal grain size of 50 μm or less or an aluminum alloy foil having an average crystal grain size of 50 μm or less.
Claims20
A nonaqueous electrolyte secondary battery comprising:
- a case;
- a nonaqueous electrolyte provided in the case;
- a positive electrode provided in the case;
- and
- a negative electrode provided in the case, the negative electrode comprising a negative electrode current collector and a negative electrode layer that is carried on the negative electrode current collector and contains negative electrode active material particles, and the negative electrode current collector including an aluminum foil having an average crystal grain size of 0.01 to 50 μm or an aluminum alloy foil which has an average crystal grain size of 0.01 to 50 μm and contains aluminum and at least one element selected from the group consisting of iron, magnesium, zinc, manganese, and silicon, and a density of the negative electrode falling within a range of 1.5 to 5 g/cm3.
A battery module comprising single cells, each single cell comprising:
- a case;
- a nonaqueous electrolyte provided in the case;
- a positive electrode provided in the case;
- and
- a negative electrode provided in the case, the negative electrode comprising a negative electrode current collector and a negative electrode layer that is carried on the negative electrode current collector and contains negative electrode active material particles, and the negative electrode current collector including an aluminum foil having an average crystal grain size of 0.01 to 50 μm or an aluminum alloy foil which has an average crystal grain size of 0.01 to 50 μm and contains aluminum and at least one element selected from the group consisting of iron, magnesium, zinc, manganese, and silicon, and a density of the negative electrode falling within a range of 1.5 to 5 g/cm3.
Dependencies are inferred from the claim text.