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：US20220231288A1

公开(公告)日：2022-07-21

申请号：US17578467

申请日：2022-01-19

Applicant: HONDA MOTOR CO., LTD.

Inventor： Kiyoshi TANAAMI ,  Toshimitsu TANAKA ,  Yuji ISOGAI ,  Shintaro AOYAGI ,  Takuya TANIUCHI ,  Toshiyuki ARIGA

IPC: H01M4/38 ,  H01M4/66 ,  H01M4/80

Abstract: To provide a nonaqueous electrolyte secondary battery negative electrode which enables suppressing durability deterioration, improving cycle durability and energy density, and suppressing the rupture of the conductive paths of a current collector comprising a porous metal body in a region which is the boundary between a coated region with an electrode mixture and an uncoated region (electrode mixture boundary region) and a nonaqueous electrolyte secondary battery comprising the same. A nonaqueous electrolyte secondary battery negative electrode, comprising: a current collecting foil; a pair of current collectors disposed in contact with both surfaces of the current collecting foil and comprising a porous metal body; and a negative electrode material disposed in pores of the porous metal body, wherein the negative electrode material comprises: a negative electrode active material comprising a silicon-based material; a skeleton-forming agent containing a silicate having a siloxane bond; a conductive auxiliary; and a binder.

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：US20230268622A1

公开(公告)日：2023-08-24

申请号：US18308682

申请日：2023-04-28

Applicant: HONDA MOTOR CO., LTD.

Inventor： Takuya TANIUCHI ,  Masahiro OHTA

IPC: H01M50/533 ,  H01M10/058 ,  H01M10/0562

CPC classification number: H01M50/533 ,  H01M10/0562 ,  H01M10/058

Abstract: Provided is a battery cell that can effectively overcome problems caused by known battery cells having an outer jacket constituted by one folded film. A battery cell includes a battery, and an outer jacket accommodating the battery. At least one end face of the battery is connected to a current-collecting tab lead. The outer jacket is constituted by one film which is folded along another end face of the battery different from the end face connected to the current-collecting tab lead, and end portions of which are joined to each other such that the current-collecting tab lead is sandwiched between the end portions. The outer jacket has a hole at a position adjacent to the end face connected to the current-collecting tab lead, the hole being blocked.

公开(公告)号：US20220200056A1

公开(公告)日：2022-06-23

申请号：US17644097

申请日：2021-12-14

Applicant: HONDA MOTOR CO., LTD.

Inventor： Takuya TANIUCHI ,  Masahiro OHTA ,  Toshiyuki ARIGA

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

Abstract: To provide a solid-state battery that can improve layout by allowing a current collecting position to be optionally disposed and that can suppress the occurrence of short circuits. A solid-state battery includes a positive electrode, a negative electrode, and a solid electrolyte layer disposed between the positive electrode and the negative electrode. A first electrode selected from one of the positive electrode and the negative electrode includes a material mixture filled portion including a metal porous body filled with an electrode material mixture. The solid electrolyte layer is disposed so as to cover a periphery of the material mixture filled portion. A second electrode selected from the other of the positive electrode and the negative electrode is disposed so as to cover the solid electrolyte layer.

公开(公告)号：US20220181640A1

公开(公告)日：2022-06-09

申请号：US17457900

申请日：2021-12-06

Applicant: HONDA MOTOR CO., LTD.

Inventor： Takuya TANIUCHI ,  Masahiro OHTA ,  Toshiyuki ARIGA

IPC: H01M4/76 ,  H01M4/66

Abstract: Provided are an electrode for lithium ion secondary batteries which can prevent cracking of the electrode, and a lithium ion secondary battery made using the same. An electrode (1, 2) for a lithium ion secondary battery (100) includes a collector (10, 20) of a metal porous body having a predetermined thickness, and having a corner of at least one location in a stereoscopic view; and an electrode mixture (18, 28) filled into these pores. The collector has a mixture filled region (11, 21) in which the electrode mixture is filled, and a mixture non-filled region (15, 25) in which the electrode mixture is not filled, or a high modulus filler having smaller elastic modulus than the electrode mixture is filled, existing at a corner of the collector.

公开(公告)号：US20220158198A1

公开(公告)日：2022-05-19

申请号：US17455017

申请日：2021-11-16

Applicant: HONDA MOTOR CO., LTD.

Inventor： Takuya TANIUCHI ,  Masahiro OHTA ,  Toshiyuki ARIGA

IPC: H01M4/78 ,  H01M4/13 ,  H01M50/107 ,  H01M10/058 ,  H01M50/186 ,  H01M4/66

Abstract: To provide a solid-state battery capable of achieving a higher capacity. A solid-state battery includes a positive electrode and a negative electrode. The positive electrode and the negative electrode each includes a current collector that is a metal porous body having a spiral shape, and an electrode material mixture with which the current collector is filled. The positive electrode and the negative electrode are arranged in combination such that opposing faces of the positive electrode and the negative electrode alternately contact each other in an axial direction of the spiral shape. A pair of the positive electrode and the negative electrode having the above structure are housed in an exterior packaging body having a cylindrical shape to achieve a higher capacity of the solid-state battery.