公开(公告)号：US20250108580A1

公开(公告)日：2025-04-03

申请号：US18730966

申请日：2022-10-19

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Satoru Maeda

IPC: B30B11/00 ,  B30B15/14 ,  H01M4/139

Abstract: A green compact forming device includes: a reservoir of powder; a first forming roll and a second forming roll structured to be adjacent to each other at a predetermined interval, the powder fed to a gap between the two rolls, the powder compressed into a sheet shape by rotation of the two rolls to form a green compact, the second forming roll supporting and conveying the green compact on a circumferential surface; a first information acquisitor structured to acquire powder information regarding an amount of the powder stored in the reservoir; and a controller structured to control a circumferential speed of the second forming roll based on the powder information.

公开(公告)号：US20240170820A1

公开(公告)日：2024-05-23

申请号：US18283636

申请日：2022-01-07

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Reiko Izumi ,  Satoru Maeda ,  Shinya Geshi ,  Kiyomi Kozuki

IPC: H01M50/586 ,  H01M4/02 ,  H01M4/13 ,  H01M4/139 ,  H01M4/62 ,  H01M50/533 ,  H01M50/536 ,  H01M50/593

CPC classification number: H01M50/586 ,  H01M4/13 ,  H01M4/139 ,  H01M4/62 ,  H01M50/533 ,  H01M50/536 ,  H01M50/593 ,  H01M2004/021 ,  H01M2004/028

Abstract: A positive electrode, which is an example of this secondary battery electrode, includes: a positive electrode core material; an electrically conductive adhesive layer disposed on the positive electrode core material; and a positive electrode mixture layer disposed on the adhesive layer. The positive electrode core material includes, at one end in a lateral direction of the positive electrode core material, an exposed portion where the adhesive layer and the positive electrode mixture layer are not disposed. An insulating protection layer that includes resin is disposed on the exposed portion of the one end. A predetermined gap is provided between the protective layer and an end surface of one end in the lateral direction of the adhesive layer.

公开(公告)号：US20240162503A1

公开(公告)日：2024-05-16

申请号：US18283625

申请日：2022-01-19

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Reiko Izumi ,  Satoru Maeda ,  Shinya Geshi ,  Kiyomi Kozuki

IPC: H01M10/42 ,  H01M4/04 ,  H01M4/139 ,  H01M4/75 ,  H01M50/536

CPC classification number: H01M10/4235 ,  H01M4/0404 ,  H01M4/139 ,  H01M4/75 ,  H01M50/536

Abstract: A positive electrode that is an example of an electrode for a secondary battery comprises: a positive electrode core material, a conductive adhesive layer disposed on the positive electrode core material, and a positive electrode mixture layer disposed on the adhesive layer, wherein: the positive electrode core material has, at one end in the short direction of the positive electrode core material, an exposed part on which the adhesive layer and the positive electrode mixture layer are not provided; an insulating protective layer containing a resin is disposed on the exposed part at the one end; and the protective layer is in contact with the end surface at one end of the adhesive layer and the positive electrode mixture layer in the short direction.

公开(公告)号：US20230128084A1

公开(公告)日：2023-04-27

申请号：US17910094

申请日：2021-01-14

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Yosuke Takayama ,  Takao Kuromiya ,  Satoru Maeda ,  Rikiya Okimoto

IPC: H01M4/36 ,  H01M4/62

Abstract: This electrode for batteries is provided with: a core material; and a mixture layer which contains an active material and a binder, while being arranged on the surface of the core material. If the mixture layer is trisected in the thickness direction and the divided sections are defined as the first region, the second region and the third region sequentially from the core material side, the void fraction of the second region is higher than the void fraction of the first region.

公开(公告)号：US20250091246A1

公开(公告)日：2025-03-20

申请号：US18729251

申请日：2022-10-19

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Satoru Maeda

IPC: B28B3/12

Abstract: A stretching and conveying device for a green compact includes a first roll and a second roll structured to convey by rotation the green compact by sandwiching the green compact between the first roll and the second roll and stretch the green compact using a circumferential speed difference between the first roll and the second roll. The second roll has a curvature radius larger than a curvature radius of the first roll, and is positioned downstream of the first roll. The green compact is conveyed while being supported on a circumferential surface of the first roll, delivered to the second roll side at a position where the first roll and the second roll face each other, and conveyed while being supported on a circumferential surface of the second roll.

公开(公告)号：US20230261197A1

公开(公告)日：2023-08-17

申请号：US18015827

申请日：2021-05-24

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Satoru Maeda ,  Yosuke Takayama ,  Takao Kuromiya

IPC: H01M4/62 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01M4/622 ,  H01M10/0525 ,  H01M4/625 ,  H01M2004/028 ,  H01M2004/021

Abstract: This positive electrode for batteries comprises a positive electrode mixture that contains at least a positive electrode active material, a conductive agent and a fibrous binder; and the ratio of the BET specific surface area (Spo) of the positive electrode mixture to the BET specific surface area (Sin) of inorganic particles containing the positive electrode active material and the conductive agent, namely Spo/Sin is from 1.0 to 2.0.