公开(公告)号：US20220320640A1

公开(公告)日：2022-10-06

申请号：US17673823

申请日：2022-02-17

Applicant: HONDA MOTOR CO., LTD.

Inventor： Masahiro OHTA ,  Yohei NOJI ,  Kosei MIYATA

IPC: H01M50/131

Abstract: The present invention provides a battery cell capable of uniformly holding an electrode laminate and speeding up a manufacturing process. A battery cell includes an electrode laminate including positive and negative electrodes and an electrolyte layer, in which the positive and negative electrodes are alternately laminated with the electrolyte layer interposed between them; and a tube-shaped insulating member that is heat-shrinkable and holds the electrode laminate, wherein the insulating material has at least two folded parts for positioning a member disposed in the internal space of the insulating member. The insulating member preferably has two portions each between the two folded parts, and the two portions are preferably equal in circumferential length.

公开(公告)号：US20220246944A1

公开(公告)日：2022-08-04

申请号：US17581860

申请日：2022-01-22

Applicant: HONDA MOTOR CO., LTD.

Inventor： Kiyoshi TANAAMI ,  Toshimitsu TANAKA ,  Yuji ISOGAI ,  Masahiro OHTA ,  Takuya TANIUCHI

IPC: H01M4/76 ,  H01M4/36

Abstract: Provided is an electrode for lithium ion secondary batteries in which an electrode material mixture is packed in porous metal, which electrode has excellent penetration of electrolyte solution and improved ion diffusivity. The electrode for lithium ion secondary batteries includes a current collector made of porous metal; and an electrode layer including an electrode material mixture including at least an electrode active material, in which the current collector is filled with the electrode material mixture, the current collector has an intermediate region and two surface regions in its thickness direction and m the electrode layer, the intermediate region has a porosity lower than that of the two surface region, and the intermediate region is filled with a first electrode active material, and the two surface regions are filled with a second electrode active material having a particle size larger than that of the first electrode active material.

公开(公告)号：US20220231385A1

公开(公告)日：2022-07-21

申请号：US17577355

申请日：2022-01-17

Applicant: HONDA MOTOR CO., LTD.

Inventor： Takuya TANIUCHI ,  Masahiro OHTA ,  Toshiyuki ARIGA

IPC: H01M50/538 ,  H01M4/76 ,  H01M50/536

Abstract: To provide a solid-state battery capable of achieving high capacity. A solid-state battery including a multilayer body including a stack of a plurality of electrode layers including positive electrode layers and negative electrode layers and solid electrolyte layers each disposed between the electrode layers, the multilayer body having a columnar shape; and the solid-state battery including a positive electrode terminal and a negative electrode terminal disposed at both end portions of the multilayer body; a positive electrode tab electrically connected to the positive electrode layer and the positive electrode terminal; and a negative electrode tab electrically connected to the negative electrode layer and the negative electrode terminal, wherein the positive electrode tab and the negative electrode tab are spirally wound on an outer peripheral surface of the multilayer body.

公开(公告)号：US20220231344A1

公开(公告)日：2022-07-21

申请号：US17645995

申请日：2021-12-26

Applicant: HONDA MOTOR CO., LTD.

Inventor： Toshiyuki ARIGA ,  Takuya TANIUCHI ,  Masahiro OHTA

IPC: H01M10/0585 ,  H01M4/80 ,  H01M10/0525

Abstract: To secure ionic conductivity by improving the adhesion between an electrode material mixture and a solid electrolyte and suppressing electrodeposition of lithium. A lithium ion secondary battery (100) includes a positive electrode including an electrode material mixture that fills pores of a metal porous body constituting an electrode current collector, a first solid electrolyte layer including a solid electrolyte that fills pores of a resin porous body, and a negative electrode including an electrode material mixture that fills pores of a metal porous body constituting an electrode current collector. The positive electrode and the negative electrode are alternately stacked with the first solid electrolyte layer provided therebetween.

公开(公告)号：US20220190401A1

公开(公告)日：2022-06-16

申请号：US17644088

申请日：2021-12-13

Applicant: HONDA MOTOR CO., LTD.

Inventor： Takuya TANIUCHI ,  Masahiro OHTA

IPC: H01M10/48 ,  H01M50/105 ,  H01M50/54 ,  H01M50/124

Abstract: An all-solid-state lithium-ion secondary battery which enables a leak inspection to be swiftly and simply performed is provided. The all-solid-state lithium-ion secondary battery includes an electrode laminate in which a positive electrode, a solid electrolyte layer, and a negative electrode are alternatingly laminated and disposed, a tab gathering section extended from the electrodes, and an exterior film which clads the electrode laminate and the tab gathering section. The electrode laminate and the tab gathering section are vacuum packaged by the exterior film. For example, it is possible to perform a leak inspection of the all-solid-state lithium-ion secondary battery by a recess for inspection formed by the exterior film following along a recess formed in the surface on the electrode laminate side being present, and measuring displacement of this recess for inspection.

公开(公告)号：US20210367299A1

公开(公告)日：2021-11-25

申请号：US17326343

申请日：2021-05-21

Applicant: HONDA MOTOR CO., LTD.

Inventor： Takuya TANIUCHI ,  Masahiro OHTA ,  Toshiyuki ARIGA

IPC: H01M50/197 ,  H01M50/533 ,  H01M50/105 ,  H01M50/557 ,  H01M50/124

Abstract: To enhance stiffness of a battery ceil and avoid cracking of an electrode without a reinforcement member in the battery cell configured such that a battery is covered with an exterior body including a laminated film. A battery cell includes a battery and an exterior body housing the battery. The exterior body includes a film in which a plurality of layers is stacked on each other, and the plurality of layers includes a surface layer to be a stiffness reinforcing layer, an air blocking layer, and an inner layer to be an adhesive layer. A buffer layer made of polyethylene terephthalate may be interposed between the air blocking layer and the inner layer. Moreover, an adhesive layer may be interposed between the air blocking layer and the surface layer. Further, a waterproof layer made of polypropylene or polyethylene terephthalate may be provided outside the air blocking layer.

公开(公告)号：US20200251783A1

公开(公告)日：2020-08-06

申请号：US16779671

申请日：2020-02-03

Applicant: Honda Motor Co.,Ltd.

Inventor： Wataru SHIMIZU ,  Masahiro OHTA ,  Toru SUKIGARA

IPC: H01M10/0583 ,  H01M4/78

Abstract: The secondary battery includes: a negative electrode layer sheet formed by laminating a negative electrode active material layer on each negative electrode current collector of a negative electrode current collector sheet in which the negative electrode current collectors adjacent to each other are partially connected at a bent connection portion; a positive electrode layer sheet formed by laminating a positive electrode active material layer on each positive electrode current collector of a positive electrode current collector sheet in which the positive electrode current collectors adjacent to each other are partially connected at a bent connection portion; and a solid electrolyte body disposed so as to clamp the negative electrode layer sheet from both sides. A solid battery laminate is formed by bending the negative electrode layer sheet, the positive electrode layer sheet, and the solid electrolyte body at the bent connection portions to form into a substantially zigzag shape.

公开(公告)号：US20200176823A1

公开(公告)日：2020-06-04

申请号：US16699129

申请日：2019-11-29

Applicant: Honda Motor Co.,Ltd.

Inventor： Wataru SHIMIZU ,  Masahiro OHTA ,  Toru SUKIGARA

IPC: H01M10/0585 ,  H01M10/0562 ,  H01M10/0525

Abstract: Provided is a secondary battery and a comb-type electrode. A negative electrode layer sheet formed by stacking a negative electrode active material layer on two surfaces of a negative electrode current collector and a positive electrode layer sheet formed by stacking a positive electrode active material layer on two surfaces of a positive electrode current collector are alternately stacked, and an electrolyte body is interposed between the negative electrode layer sheet and the positive electrode layer sheet adjacent in a stacking direction. Each of the negative electrode current collector and the positive electrode current collector includes a bent connecting part sandwiching a notch part and formed by bending two sides in directions opposite to each other. The bent connecting parts of the negative electrode current collectors adjacent in the stacking direction and the bent connecting parts of the positive electrode current collectors adjacent in the stacking direction are connected.

公开(公告)号：US20220263167A1

公开(公告)日：2022-08-18

申请号：US17454826

申请日：2021-11-15

Applicant: HONDA MOTOR CO., LTD.

Inventor： Takuya TANIUCHI ,  Masahiro OHTA ,  Toshiyuki ARIGA

IPC: H01M50/178 ,  H01M50/105 ,  H01M50/211 ,  H01M50/136

Abstract: To reduce influence of external force on a current collection tab lead and a current collection tab in a laminated cell type battery. A single film of an exterior body contacts and covers a top surface, a bottom surface, and two side surfaces of a battery perpendicular to an end surface of the battery from which a current collection tab and a current collection tab lead are provided to extend, covers the end surface of the battery from which the current collection tab and the current collection tab lead protrude, and is folded in from both short sides of the end surface such that triangular pyramid-shaped spaces are formed on both sides. A reinforcement member is arranged in and joined to each triangular pyramid-shaped space.

公开(公告)号：US20220246942A1

公开(公告)日：2022-08-04

申请号：US17585586

申请日：2022-01-27

Applicant: HONDA MOTOR CO., LTD.

Inventor： Takuya TANIUCHI ,  Kiyoshi TANAAMI ,  Masahiro OHTA ,  Toshiyuki ARIGA ,  Toshimitsu TANAKA

IPC: H01M4/66 ,  H01M50/531 ,  H01M4/80 ,  H01M4/13 ,  H01M10/0525

Abstract: There is provided an electrode including: a current collector; an electrode material mixture; a plate-shaped metal body having a through-hole formed therethrough; a resin provided inside the through-hole; and an electrode tab, the current collector being a porous metal body, the current collector having pores filled with the electrode material mixture, the electrode tab being an extending portion extending from the plate-shaped metal body, wherein the current collector has an inner region in which the through-hole of the metal plate-shaped body is located in top view. There is also provided an electricity storage device including the electrode.