公开(公告)号：US20180309138A1

公开(公告)日：2018-10-25

申请号：US15769332

申请日：2016-10-14

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： KENJI YAMATO

IPC: H01M6/08 ,  H01M2/02 ,  H01M4/06 ,  H01M10/28 ,  H01M4/24

CPC classification number: H01M6/08 ,  H01M2/0225 ,  H01M4/06 ,  H01M4/24 ,  H01M4/30 ,  H01M4/50 ,  H01M6/085 ,  H01M10/283 ,  H01M2300/0014

Abstract: An alkaline dry battery includes a bottomed cylindrical battery case; a positive electrode packed in the battery case and including n hollow cylindrical pellets; a negative electrode disposed in a hollow portion of the pellets; a separator interposed between the positive electrode and the negative electrode; and an alkaline electrolytic solution. The positive electrode includes manganese dioxide and a conductive agent, n is an integer of 1 or more, and an average density of manganese dioxide of the positive electrode is 2.80 to 3.00 g/cm3. The density dc of manganese dioxide in the center portion in the height direction of the positive electrode is 98% or less of an average value de of density of manganese dioxide in each of both end portions.

公开(公告)号：US20200350521A1

公开(公告)日：2020-11-05

申请号：US16960032

申请日：2018-09-21

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： KENJI YAMATO ,  TADAYOSHI TAKAHASHI

IPC: H01M2/02 ,  H01M2/04

Abstract: A cylindrical battery including a battery case and a lid, the battery case having an opening doubly wound and tightened to be sealed by an outer peripheral portion of the lid, wherein an opening-side outer peripheral portion of the battery case has a diameter reduced inward in the radial direction, an outer peripheral surface of the battery case is covered with a label, a space surrounded by the outer peripheral surface of the battery case, the outer peripheral portion of the lid, and the label is provided, and 1.2×T1≤D≤2.7×T1 is satisfied in a range of 0.1 mm≤T1≤0.5 mm, where D is a diameter of an inscribed circle that is tangent to the outer peripheral surface of the battery case, the outer peripheral portion of the lid, and the label, and T1 is a thickness of the battery case.

公开(公告)号：US20210265689A1

公开(公告)日：2021-08-26

申请号：US17251924

申请日：2019-01-15

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： KENJI YAMATO ,  TADAYOSHI TAKAHASHI

IPC: H01M50/183 ,  H01M50/152 ,  H01M50/166 ,  H01M10/04

Abstract: A battery including a battery can including a cylinder portion, a bottom wall for closing a first end of the cylinder portion, and an opening edge continuous to a second end of the cylinder portion; a power generation element housed in the cylinder portion; and a sealing plate fixed to the opening edge so as to seal an opening of the opening edge. The sealing plate includes a lid portion, and a peripheral edge portion continuous to the lid portion, the opening edge and the peripheral edge portion are linked to each other by a double seaming structure, and 0.1 mm≤T1≤0.5 mm, 0.1 mm≤T2≤0.5 mm, 1.1≤T2/T1≤3.0, and −0.21T2+1.72T1≤X≤0.27T2+4.51T1 are satisfied, where X (min) is an overlap length of a body hook of the opening edge and a cover hook of the peripheral edge portion in the double seaming structure, T1 is a thickness of the body hook, and T2 is a thickness of the cover hook.