Secondary Cell
First Claim
1. A secondary cell, comprising:
- an electrode roll in which a positive foil on which a positive-electrode material is coated and a negative foil on which a negative-electrode material is coated are winded through a separator into a flat shape around a winding core;
a case in which the electrode roll is housed;
a cover which seals the case;
a positive terminal and a negative terminal provided on the cover;
a positive electrode current collector plate that is electrically connected to the positive foil of the electrode roll and the positive terminal and held by the cover; and
a negative electrode current collector plate that is electrically connected to the negative foil of the electrode roll and the negative terminal and held by the cover, wherein;
the positive electrode current collector plate and the negative electrode current collector plate are each connected to the winding core.
2 Assignments
0 Petitions
Accused Products
Abstract
A secondary cell includes: an electrode roll in which a positive foil on which a positive-electrode material is coated and a negative foil on which a negative-electrode material is coated are winded through a separator into a flat shape around a winding core; a case in which the electrode roll is housed; a cover which seals the case; a positive terminal and a negative terminal provided on the cover; a positive electrode current collector plate that is electrically connected to the positive foil of the electrode roll and the positive terminal and held by the cover; and a negative electrode current collector plate that is electrically connected to the negative foil of the electrode roll and the negative terminal and held by the cover. The positive electrode current collector plate and the negative electrode current collector plate are each connected to the winding core.
34 Citations
12 Claims
-
1. A secondary cell, comprising:
-
an electrode roll in which a positive foil on which a positive-electrode material is coated and a negative foil on which a negative-electrode material is coated are winded through a separator into a flat shape around a winding core; a case in which the electrode roll is housed; a cover which seals the case; a positive terminal and a negative terminal provided on the cover; a positive electrode current collector plate that is electrically connected to the positive foil of the electrode roll and the positive terminal and held by the cover; and a negative electrode current collector plate that is electrically connected to the negative foil of the electrode roll and the negative terminal and held by the cover, wherein; the positive electrode current collector plate and the negative electrode current collector plate are each connected to the winding core. - View Dependent Claims (2, 3, 4, 5, 8, 9, 10, 11, 12)
-
-
6. A secondary cell, comprising:
-
an electrode roll in which a positive foil on which a positive-electrode material is coated and a negative foil on which a negative-electrode material is coated are winded through a separator into a flat shape around a winding core; a case in which the electrode roll is housed; a cover which seals the case; a positive terminal and a negative terminal provided on the cover; a positive electrode current collector plate that is electrically connected to the positive foil of the electrode roll and the positive terminal and held by the cover; a negative electrode current collector plate that is electrically connected to the negative foil of the electrode roll and the negative terminal and held by the cover; a positive electrode supporting body that fits on an inner peripheral side of the electrode roll at a positive electrode-side end in a winding axis direction of the electrode roll and is connected with the winding core; and a negative electrode supporting body that fits on an inner peripheral side of the electrode roll at a negative electrode-side end in the winding axis direction of the electrode roll and is connected with the winding core, wherein; the winding core includes a plurality of projections that project from both end faces of the winding core in the winding axis direction of the electrode roll, and the positive and negative electrode supporting bodies are connected to the projections. - View Dependent Claims (7)
-
Specification