Exterior member for battery element and non-aqueous electrolyte secondary battery using the same
AssigneeSony Corporation
InventorToshio Koishikawa
Life of this patent
Estimating the term…
Abstract
An exterior member for a battery element includes: a first sheet piece made of a laminated sheet; a second sheet piece made of a laminated sheet; a bending part for partitioning the first sheet piece and the second sheet piece from each other; a sealing part which is formed by a peripheral part of the first sheet piece and a peripheral part of the second sheet piece corresponding to the peripheral part of the first sheet piece and which hermetically seals a battery element; and a thick-walled part formed so as to include at least a part of the bending part.
Claims7
An exterior member for a battery element comprising:
- a first sheet piece made of a laminated sheet;
- a second sheet piece made of the laminated sheet;
- a bending part for partitioning the first sheet piece and the second sheet piece from each other;
- a sealing part which is formed by a peripheral part of the first sheet piece in contact with a peripheral part of the second sheet piece corresponding to the peripheral part of the first sheet piece and which hermetically seals the battery element;
- and
- a thick-walled part that is a portion of the sealing part and includes at least a part of the bending part,
- wherein the thick-walled part has a greater thickness in a thickness direction of the battery element than a thickness of a portion of the sealing part other than the thick-walled part, and
- wherein the thickness direction of the battery element corresponds to a stacking direction of the battery element.
A non-aqueous electrolyte secondary battery comprising:
- a battery element in a rectangular plate form having a positive electrode and a negative electrode wound therein via a separator;
- and
- an exterior member for the battery element including
- a first sheet piece made of a laminated sheet;
- a second sheet piece made of the laminated sheet;
- a bending part for partitioning the first sheet piece and the second sheet piece from each other;
- a sealing part which is formed by a peripheral part of the first sheet piece in contact with a peripheral part of the second sheet piece corresponding to the peripheral part of the first sheet piece and which hermetically seals the battery element;
- and
- a thick-walled part that is a portion of the sealing part and includes at least a part of the bending part,
- wherein the thick-walled part has a greater thickness in a thickness direction of the battery element than a thickness of a portion of the sealing part other than the thick-walled part, and
- wherein the thickness direction of the battery element corresponds to a stacking direction of the battery element.
Dependencies are inferred from the claim text.