| 摘要 |
The electricity storage device includes an electrode assembly, a case, and a holding tape. The electrode assembly further includes a bottom surface, which is supported by an inner bottom surface of the case, two end faces in a lamination direction, which are joined to the bottom face, two side surfaces, which are joined to the bottom surface and intersect with the end surfaces, and two corner sections, which are formed from the bottom surface and the side surfaces. Each corner section includes a chamfered section, and a border section between the chamfered section and the bottom surface. The holding tape covers the border section from the bottom surface in a direction parallel to the bottom surface and orthogonal to the stacking direction, further inward of the electrode assembly than the side surface. |
| 主权项 |
1. An electricity storage device comprising:
an electrode assembly including a plurality of positive electrodes, a plurality of negative electrodes, and a plurality of separators, wherein the positive electrodes and the negative electrodes are alternately layered in a lamination direction, and the separators insulate the positive electrodes from the adjacent negative electrodes; a case, which includes an inner bottom surface and accommodates the electrode assembly; an insulative layer located between the electrode assembly and the case; and holding tape, which holds the positive electrodes, the negative electrodes, and the separators together, wherein the electrode assembly includes a bottom surface, which is supported by the inner bottom surface of the case, two end surfaces in the lamination direction, which are connected to the bottom surface, two side surfaces, which are connected to the bottom surface and intersect with the end surfaces, and two corner sections formed by the bottom surface and the side surfaces, each corner section includes a chamfered section and a border section between the chamfered section and the bottom surface, and on an inner side of the side surfaces in the electrode assembly in a direction that is parallel to the bottom surface and perpendicular to the lamination direction, the holding tape covers the border section from the bottom surface. |
