公开(公告)号：US20230318158A1

公开(公告)日：2023-10-05

申请号：US18179390

申请日：2023-03-07

Applicant: HONDA MOTOR CO., LTD.

Inventor： Toshiyuki ARIGA

IPC: H01M50/586 ,  H01M50/107 ,  H01M10/0587 ,  H01M50/152 ,  H01M50/593 ,  H01M50/531 ,  H01M50/193 ,  H01M50/186 ,  H01M50/213

CPC classification number: H01M50/586 ,  H01M50/107 ,  H01M10/0587 ,  H01M50/152 ,  H01M50/593 ,  H01M50/531 ,  H01M50/193 ,  H01M50/186 ,  H01M50/213

Abstract: Provided is a cylindrical battery including: a shaft core; a set of wound electrodes including an electrode stack wound on the shaft core; an exterior member surrounding the set of wound electrodes; a cap disposed at one axial end of the shaft core and electrically connected to one of the positive and negative electrodes; and an insulating member disposed between the exterior member and the cap, the cap having an outer diameter that is larger than the inner diameter of the exterior member and smaller than the outer diameter of the exterior member, the insulating member having an outer diameter larger than the outer diameter of the cap, the insulating member having a protrusion that is located more inside in the radial direction of the set of wound electrodes than the inner surface of the exterior member and protrudes toward the set of wound electrodes.

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：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：US20230317965A1

公开(公告)日：2023-10-05

申请号：US18177132

申请日：2023-03-02

Applicant: HONDA MOTOR CO., LTD.

Inventor： Kazuki CHIBA ,  Toshiyuki ARIGA

IPC: H01M4/70 ,  H01M50/54 ,  H01M4/38 ,  H01M4/485 ,  H01M4/48 ,  H01M4/134 ,  H01M4/131 ,  H01M4/136 ,  H01M4/58 ,  H01M4/587

CPC classification number: H01M4/70 ,  H01M50/54 ,  H01M4/382 ,  H01M4/381 ,  H01M4/386 ,  H01M4/485 ,  H01M4/48 ,  H01M4/134 ,  H01M4/131 ,  H01M4/136 ,  H01M4/5815 ,  H01M4/587 ,  H01M2004/027

Abstract: It is an object to provide an electrode laminate and a secondary battery capable of reducing manufacturing costs and preventing non-uniform electrode reactions during charging and discharging. An electrode laminate (1) includes a plurality of sheet-shaped negative electrodes (2), a plurality of sheet-shaped solid electrolytes (3), and a plurality of sheet-shaped positive electrodes (4). The plurality of negative electrodes (2), the plurality of solid electrolytes (3), and the plurality of positive electrodes (4) are laminated together within a predetermined range. The negative electrode current collecting part (2A) and the positive electrode current collecting part (4A) each have a shape that tapers toward a direction away from the predetermined range.

公开(公告)号：US20230266394A1

公开(公告)日：2023-08-24

申请号：US18065631

申请日：2022-12-14

Applicant: HONDA MOTOR CO., LTD.

Inventor： Kazuki CHIBA ,  Toshiyuki ARIGA

IPC: G01R31/374 ,  G01R31/3835 ,  G01R31/367 ,  G01R31/396 ,  H01M10/48 ,  H01M10/44

CPC classification number: G01R31/374 ,  G01R31/3835 ,  G01R31/367 ,  G01R31/396 ,  H01M10/482 ,  H01M10/441 ,  H01M10/486 ,  H02J7/0048

Abstract: A battery unit includes: a module including m cell groups that are connected in series and each include n cells connected in parallel; m voltage detectors; (m×(n−1)) heat flow detectors; a storage; and a state estimator. The storage stores a table map of OCV vs. SOC characteristics (A1) and a table map of HF vs. SOC characteristics (A2). For each of the m cell groups, the state estimator is configured to: determine, based on the (A2), a true SOC of (n−1) cells that corresponds to a heat flow detected; determine, based on the (A1), an OCV of the (n−1) cells that corresponds to the determined true SOC; calculates an OCV of a remaining cell from the determined OCV and a detected composite voltage; and determine, based on the (A1), a true SOC of the remaining cell that corresponds to the calculated OCV.

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.