公开(公告)号：US20230207835A1

公开(公告)日：2023-06-29

申请号：US17927279

申请日：2021-05-11

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Naoaki Nishimura ,  Kyosuke Okazaki ,  Tadayoshi Takahashi ,  Yoshiki Shimata

IPC: H01M6/10 ,  H01M4/505 ,  H01M6/14 ,  H01M4/40

CPC classification number: H01M6/10 ,  H01M4/505 ,  H01M6/14 ,  H01M4/405 ,  H01M2004/021

Abstract: A non-aqueous electrolyte battery includes a positive electrode, a negative electrode, a separator interposed between the positive electrode and the negative electrode, and a nonaqueous electrolytic solution. The positive electrode, the separator, and the negative electrode are spirally wound. The positive electrode includes a positive electrode active material and an expanded metal. The positive electrode has a thickness larger than or equal to 0.8 mm and smaller than or equal to 3 mm. A thickness T of the expanded metal satisfies 0.15 mm≤T≤0.3 mm. A center-to-center distance SW of the expanded metal in a shorter direction in mesh and a center-to-center distance LW of the expanded metal in a longer direction in mesh satisfy 6 mm2≤LW·SW≤20 mm2. A feed width W of the expanded metal satisfies 0.15 mm≤W≤0.3 mm.

公开(公告)号：US12170387B2

公开(公告)日：2024-12-17

申请号：US17614398

申请日：2020-04-16

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kyosuke Okazaki ,  Tadayoshi Takahashi ,  Futoshi Tanigawa ,  Naoaki Nishimura

IPC: H01M6/02 ,  H01M4/08 ,  H01M6/16 ,  H01M50/533 ,  H01M4/36 ,  H01M4/40 ,  H01M4/66

Abstract: A lithium primary battery including a current collecting wire that electrically connects an electrode body and a sealing body or a battery can, in which the electrode body includes a positive electrode, a negative electrode, and a separator, the negative electrode includes at least one selected from the group consisting of metal lithium and a lithium alloy, the current collecting wire includes a first lead connected to one of the positive electrode and the negative electrode, a second lead connected to the sealing body or the battery can, and an overdischarge suppressing element interposed between the first lead and the second lead, the overdischarge suppressing element includes a first metal layer connected to the first lead, with the first metal layer being thinner than the first lead, a second metal layer connected to the second lead, with the second metal layer being thinner than the second lead, and a conductive layer interposed between the first metal layer and the second metal layer disposed to face each other, the conductive layer includes a resin and a conductive material dispersed in the resin, and the conductive material inserts lithium ions at a potential that is lower than that of the positive electrode.

公开(公告)号：US12087975B2

公开(公告)日：2024-09-10

申请号：US17286891

申请日：2019-08-07

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Naoaki Nishimura ,  Tadayoshi Takahashi ,  Kyosuke Okazaki ,  Futoshi Tanigawa

IPC: H01M6/14 ,  H01M4/02 ,  H01M4/06 ,  H01M4/40 ,  H01M4/50 ,  H01M50/107 ,  H01M50/409 ,  H01M50/449 ,  H01M50/489 ,  H01M50/491

CPC classification number: H01M6/14 ,  H01M4/06 ,  H01M4/405 ,  H01M4/502 ,  H01M50/107 ,  H01M50/409 ,  H01M50/449 ,  H01M50/489 ,  H01M50/491 ,  H01M2004/021

Abstract: A lithium primary battery includes a wound electrode body obtained by winding a sheet-like positive electrode, a sheet-like negative electrode, and a separator interposed between the positive electrode and the negative electrode, and a nonaqueous electrolyte solution. The positive electrode includes manganese dioxide as a positive electrode active material. The negative electrode includes at least one selected from the group consisting of metallic lithium and lithium alloys, and has a first principal surface and a second principal surface opposite to the first principal surface. An entire surface of each of the first principal surface and the second principal surface faces the positive electrode. A total area of the first principal surface and the second principal surface is 100 cm2 or more and 180 cm2 or less.

公开(公告)号：US20230178831A1

公开(公告)日：2023-06-08

申请号：US17924002

申请日：2021-04-20

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Masao Ootsuka ,  Tadayoshi Takahashi ,  Futoshi Tanigawa ,  Naoaki Nishimura ,  Kyosuke Okazaki

IPC: H01M50/184 ,  H01M50/107 ,  H01M50/559 ,  H01M50/188

CPC classification number: H01M50/184 ,  H01M50/107 ,  H01M50/559 ,  H01M50/188

Abstract: A hermetically sealed battery includes a battery can having a bottomed cylindrical shape and an opening, an electrode body accommodated in the battery can, a sealing plate covering the opening of the battery can, a rivet disposed on the sealing plate and serving as a terminal, an insulator insulates the sealing plate from the rivet, and an internal lead electrically connected to the rivet. The insulator includes a sealing part sealing between the sealing plate and the rivet and a plate part closer to the electrode body than the sealing part, the plate part being extended in a radial direction of the electrode body. The plate part has a cut-away portion recessed in a periphery of the plate part in the radial direction. The internal lead is partially disposed in the cut-away portion.