公开(公告)号：US11522227B2

公开(公告)日：2022-12-06

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 ,  H01M4/02

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：US11437675B2

公开(公告)日：2022-09-06

申请号：US16726253

申请日：2019-12-24

Applicant: Honda Motor Co., Ltd.

Inventor： Takuya Taniuchi ,  Masahiro Ohta ,  Yuriko Asahi

IPC: H01M50/186 ,  H01M50/191 ,  H01M50/531 ,  H01M50/543 ,  H01M50/183 ,  H01M50/188 ,  H01M50/567 ,  H01M50/55 ,  H01M10/058 ,  H01M50/148 ,  H01M50/553 ,  H01M50/15

Abstract: The disclosure provides a cell structure of a solid state battery capable of uniformly holding a solid state battery cell in a battery case and a manufacturing method of a solid state battery. In a process of manufacturing a can cell of the solid state battery, a shock absorber is disposed in the battery case after the solid state battery cell is inserted into the battery case and before a can lid is welded. Then, the lid is provided to seal the case. At the time of sealing, the solid state cell and a terminal are fastened by using an engaging member, and the airtightness is improved.

公开(公告)号：US20220247048A1

公开(公告)日：2022-08-04

申请号：US17584400

申请日：2022-01-26

Applicant: HONDA MOTOR CO., LTD.

Inventor： Masahiro Ohta ,  Takuya Taniuchi

IPC: H01M50/583 ,  H01M50/54

Abstract: A battery includes one or more stacks, an outer packaging body, a lead terminal, and a plurality of overcurrent breaking portions. The one or more stacks each include a positive electrode including a positive electrode current collector, an electrolyte, and a negative electrode including a negative electrode current collector arranged in a repeating pattern. At least the positive electrode current collector or the negative electrode current collector includes a current collector tab that extends from an end face thereof. The tab constitutes a plurality of current collector tab groups. The lead terminal at least partially extends from the outer packaging body to an outside. The plurality of overcurrent breaking portions are disposed inside the outer packaging body and electrically connected to the lead terminal. The plurality of current collector tab groups are respectively electrically connected to the plurality of overcurrent breaking portions.

公开(公告)号：US20210020895A1

公开(公告)日：2021-01-21

申请号：US16929157

申请日：2020-07-15

Applicant: HONDA MOTOR CO., LTD.

Inventor： Masahiro Ohta ,  Wataru Shimizu ,  Toru Sukigara

IPC: H01M2/26 ,  H01M10/04

Abstract: A secondary battery (100) of the present invention includes: a laminate (101) formed by alternately laminating a positive electrode and a negative electrode via an electrolyte; on one sidewall (101a) side of the laminate, a positive electrode reinforcing member (102) attached to an end portion of a plate-shaped positive electrode collector which constitutes the positive electrode, and a positive electrode tab (103) which covers one sidewall (101a) surface of the laminate and is attached to an end portion of the positive electrode reinforcing member (102); on the other sidewall (101b) side of the laminate, a negative electrode reinforcing member (104) attached to an end portion of a plate-shaped negative electrode collector which constitutes the negative electrode, and a negative electrode tab (105) which covers the other sidewall (101b) surface of the laminate and is attached to an end portion of the negative electrode reinforcing member (104); and an outer package which encloses the laminate (101), the positive electrode reinforcing member (102), the positive electrode tab (103), the negative electrode reinforcing member (104), and the negative electrode tab (105).

公开(公告)号：US12059974B2

公开(公告)日：2024-08-13

申请号：US17184613

申请日：2021-02-25

Applicant: HONDA MOTOR CO., LTD.

Inventor： Takuya Taniuchi ,  Masahiro Ohta

IPC: H02J7/00 ,  B60L53/10 ,  B60L53/14 ,  B60L53/30 ,  B60L58/12 ,  B60L58/25 ,  B60L58/26

CPC classification number: B60L58/26 ,  B60L53/11 ,  B60L53/14 ,  B60L53/30 ,  B60L58/12 ,  B60L58/25 ,  B60L2240/545

Abstract: To provide a fast charger and a fast charging method that are highly efficient in fast charging of a solid-state battery.
A fast charger includes a charging section, a temperature acquisition section, and a controller. The charging section feeds current to a solid-state battery being a secondary battery. The temperature acquisition section acquires a temperature of the solid-state battery. The controller performs control to cool the solid-state battery if the temperature acquired by the temperature acquisition section is greater than or equal to a predetermined temperature.
The controller determines a plurality of inflection points on a curve representing changes in the temperature of the solid-state battery against internal resistance of the solid-state battery. The predetermined temperature corresponds to an inflection point on a high-temperature side among the plurality of inflection points.

公开(公告)号：US11942597B2

公开(公告)日：2024-03-26

申请号：US17041431

申请日：2019-02-27

Applicant: HONDA MOTOR CO., LTD.

Inventor： Takuya Taniuchi ,  Masahiro Ohta

IPC: H01M10/0562 ,  H01M10/0525 ,  H01M10/0585 ,  H01M10/613 ,  H01M10/625 ,  H01M10/653 ,  H01M10/6551 ,  H01M10/6561 ,  H01M10/6567 ,  H01M10/657 ,  H01M50/103 ,  H01M50/119 ,  H01M50/204 ,  H01M50/209 ,  H01M50/271 ,  H01M50/474

CPC classification number: H01M10/0562 ,  H01M10/0525 ,  H01M10/0585 ,  H01M10/613 ,  H01M10/625 ,  H01M10/653 ,  H01M10/6551 ,  H01M10/6561 ,  H01M10/6567 ,  H01M10/657 ,  H01M50/103 ,  H01M50/119 ,  H01M50/209 ,  H01M50/474 ,  H01M50/204 ,  H01M50/271

Abstract: Provided are: a solid-state battery in which an initial load is applied to a battery cell; and a solid-state battery module comprised of the battery. This solid-state battery includes a pressing portion provided on a solid-state battery case so that a spring force is utilized to apply the initial load to the solid-state battery.
Specifically, the solid-state battery includes a solid-state battery cell, and a battery case for accommodating the solid-state battery cell, in which the solid-state battery cell is a stack including a positive electrode, a negative electrode, and a solid electrolyte present between the positive electrode and the negative electrode, and in which a face constituting the battery case and extending substantially perpendicular to the stacking direction of the stack has a pressing portion.

公开(公告)号：US11860233B2

公开(公告)日：2024-01-02

申请号：US17818002

申请日：2022-08-08

Applicant: HONDA MOTOR CO., LTD.

Inventor： Kazuki Chiba ,  Masahiro Ohta

IPC: G01R31/374 ,  H01M10/48 ,  H01M10/42 ,  H01M10/44 ,  G01R31/392 ,  G01R31/3842 ,  G01R31/367 ,  H02J7/00 ,  G01R31/396

CPC classification number: G01R31/374 ,  G01R31/367 ,  G01R31/3842 ,  G01R31/392 ,  G01R31/396 ,  H01M10/425 ,  H01M10/44 ,  H01M10/486 ,  H02J7/0048 ,  H01M2010/4271

Abstract: The battery unit includes a storage configured to store (A1) and (A2) below, and a battery state estimator.



(A1): a table map OCV vs. SOC characteristics.
(A2): HF vs. SOC initial characteristics.




The battery state estimator estimates, based on (A1), a start SOC corresponding to a detected OCV at a start of charge; measures HF vs. SOC present characteristics and detects a peak of differential characteristics of the measured HF vs. SOC present characteristics during the charge; determines a SOC at the detected peak as a SOC(HF) based on (A2); calculates a charge capacity from the start of the charge to detection of the peak; calculates a SOC(OCV) based on the calculated charge capacity and the start SOC; and in a case where the SOC(OCV) deviates with respect to the SOC(HF) by an amount of deviation equal to or greater than a predetermined value, corrects (A1).

公开(公告)号：US20220278396A1

公开(公告)日：2022-09-01

申请号：US17578508

申请日：2022-01-19

Applicant: HONDA MOTOR CO., LTD.

Inventor： Masahiro Ohta ,  Takuya Taniuchi

IPC: H01M50/105 ,  H01M50/186 ,  H01M50/531

Abstract: A pouch cell includes: a charging and discharging element; a current collecting tab lead configured to be thinner than the charging and discharging element and drawn out of the charging and discharging element to an outside; an exterior film configured to wrap the charging and discharging element in a state in which the current collecting tab lead is drawn out to an outside; a clamping part configured to clamp the current collecting tab lead from the exterior film by front and back surfaces in a thickness direction; and an airtightness maintaining member mounted to cover an end portion of the clamping part, wherein the airtightness maintaining member is separated from the exterior film, has a slit through which the current collecting tab lead is drawn out to the outside and has a bent part which covers an end portion of the clamping part, and a dimension of the bent part in the thickness direction of the clamping part is larger than a width dimension of the slit.

公开(公告)号：US11342619B2

公开(公告)日：2022-05-24

申请号：US16726253

申请日：2019-12-24

Applicant: Honda Motor Co., Ltd.

Inventor： Takuya Taniuchi ,  Masahiro Ohta ,  Yuriko Asahi

IPC: H01M50/186 ,  H01M50/191 ,  H01M50/531 ,  H01M50/543 ,  H01M50/183 ,  H01M50/188 ,  H01M50/567 ,  H01M50/55 ,  H01M10/058 ,  H01M50/148 ,  H01M50/553 ,  H01M50/15

Abstract: The disclosure provides a cell structure of a solid state battery capable of uniformly holding a solid state battery cell in a battery case and a manufacturing method of a solid state battery. In a process of manufacturing a can cell of the solid state battery, a shock absorber is disposed in the battery case after the solid state battery cell is inserted into the battery case and before a can lid is welded. Then, the lid is provided to seal the case. At the time of sealing, the solid state cell and a terminal are fastened by using an engaging member, and the airtightness is improved.

公开(公告)号：US20200343591A1

公开(公告)日：2020-10-29

申请号：US16838068

申请日：2020-04-02

Applicant: HONDA MOTOR CO., LTD.

Inventor： Masahiro Ohta ,  Wataru Shimizu ,  Toru Sukigara

IPC: H01M10/0583 ,  H01M2/18 ,  H01M2/16

Abstract: What is provided is a solid state battery and a solid state battery manufacturing method capable of more reliably preventing short-circuiting. A solid state battery includes: a first electrode piece in which a first electrode active material layer is formed on a first current collector layer; a second electrode piece in which a second electrode active material layer is formed on a second current collector layer; and a bag-shaped solid electrolyte layer which accommodates the first electrode piece, wherein the first electrode piece accommodated in the bag-shaped solid electrolyte layer and the second electrode piece are laminated so as to overlap each other in a plan view so that the first electrode active material layer and the second electrode active material layer are disposed so as to face each other with the solid electrolyte layer interposed therebetween.