公开(公告)号：US20220109216A1

公开(公告)日：2022-04-07

申请号：US17281237

申请日：2018-10-01

Applicant: HONDA MOTOR CO., LTD.

Inventor： Takuya TANIUCHI ,  Masahiro OHTA

IPC: H01M50/507 ,  H01M50/51 ,  H01M10/613 ,  H01M10/625 ,  H01M10/647

Abstract: In order to secure a larger cooling surface area for battery cells and making it possible to keep the height of the battery module low and improve the degree of freedom in arranging the battery cells, this battery module is provided with a plurality of battery cells 2 each comprising an all-solid battery having laminated therein a positive electrode layer 201, a negative electrode layer 202, and a solid electrolyte layer 203. Each of the battery cells 2 has a pair of electrode terminals 23a, 23b protruding from opposing lateral faces 22 of the battery cell 2. The plurality of battery cells 2 are arranged so as to be parallel to the lamination planes of the positive electrode layer 201, the negative electrode layer 202, and the solid electrolyte layer 203 and in such a manner as to have the respective electrode terminals 23a, 23b of different battery cells 2 arrayed in parallel to each other. The electrode terminal 23a and the electrode terminal 23b of battery cells 2 adjacent in the array direction are electrically connected by a bus bar 3.

公开(公告)号：US20210399391A1

公开(公告)日：2021-12-23

申请号：US17347568

申请日：2021-06-14

Applicant: HONDA MOTOR CO., LTD.

Inventor： Takuya TANIUCHI ,  Masahiro OHTA ,  Toshiyuki ARIGA

IPC: H01M50/54 ,  H01M50/209 ,  H01M50/533

Abstract: To provide a battery module capable of improving the workability in manufacturing.
A battery module (1) includes: a plurality of battery cells (10) each including: a battery (11); and an exterior packaging body (12) that houses the battery (11). The battery (11) incudes: a negative electrode including a negative electrode current collector; an electrolyte; and a positive electrode including a positive electrode current collector. The plurality of battery cells (10) each include: a current collector tab (13, 15) extending from each of the positive electrode current collector and the negative electrode current collector; and a current collector tab lead (14, 16) connected to each of the current collector tabs (13, 15). The current collector tab lead (14, 16) extends in a vertical direction (y2) perpendicular to the stacking direction (y1) of the plurality of battery cells (10).

公开(公告)号：US20210367295A1

公开(公告)日：2021-11-25

申请号：US17324072

申请日：2021-05-18

Applicant: HONDA MOTOR CO., LTD.

Inventor： Takuya TANIUCHI ,  Masahiro OHTA ,  Toshiyuki ARIGA

IPC: H01M50/121 ,  H01M10/6555 ,  H01M10/613

Abstract: The present disclosure is intended to provide a battery cell and a battery module including such battery cells, the battery cells being easy to fix and resistant to misalignment with respect to each other, and the battery module receiving a uniform restraining load.
A battery cell 10 includes a battery 11 and an outer sheath 12 that accommodates the battery 11 therein while being fixed to and adhering to the battery 11, the outer sheath 12 having an outermost layer L2 at least a portion of which is provided with a low melting point resin layer.

公开(公告)号：US20210367294A1

公开(公告)日：2021-11-25

申请号：US17320227

申请日：2021-05-14

Applicant: HONDA MOTOR CO., LTD.

Inventor： Takuya TANIUCHI ,  Masahiro OHTA ,  Toshiyuki ARIGA

IPC: H01M50/103 ,  H01M50/533 ,  H01M50/183 ,  H01M50/543

Abstract: To efficiently stack battery cells without shifting of the positions of the battery cells from each other in view of the above-described problems on module formation from the battery cells.
When the battery cells are stacked to form a module, the extension portion 22c of the exterior body of the battery cell 2 extending from the side surface of the battery on the side from which the collection tab lead does not extend is joined onto a side surface 22a, from which a collection tab lead does not extend, of an adjacent battery cell.

公开(公告)号：US20210305620A1

公开(公告)日：2021-09-30

申请号：US17206101

申请日：2021-03-18

Applicant: HONDA MOTOR CO., LTD.

Inventor： Takuya TANIUCHI ,  Masahiro OHTA ,  Toshiyuki ARIGA

IPC: H01M10/0525 ,  H01M4/70 ,  H01M4/66 ,  H01M4/04 ,  H01M4/38 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58

Abstract: A lithium ion secondary battery that, when current collector tabs of the lithium ion secondary battery are bundled together and joined with a lead terminal, can prevent the current collector tabs from cracking or breaking and can ensure that both of an electrical connection and a physical connection between the current collector tabs and the lead terminal are guaranteed is provided.

公开(公告)号：US20210296744A1

公开(公告)日：2021-09-23

申请号：US17202317

申请日：2021-03-15

Applicant: HONDA MOTOR CO., LTD.

Inventor： Takuya TANIUCHI ,  Masahiro OHTA ,  Toshiyuki ARIGA

IPC: H01M50/54 ,  H01M10/0525 ,  H01M10/0585

Abstract: To provide a lithium ion secondary battery in which it is possible to prevent an electrode end part from cracking, when current collector tabs of the lithium ion secondary battery are bound to each other and joined to a lead terminal.
A lithium ion secondary battery includes a lithium ion secondary battery main body and a lead terminal. The lithium ion secondary battery main body has a laminated body repeatedly disposed with positive electrodes respectively including positive electrode current collectors, solid electrolytes, and negative electrodes respectively including negative electrode current collectors. The current collectors respectively extend from an end face of the laminated body in an identical direction to constitute a plurality of current collector tabs. The lead terminal is electrically coupled to the plurality of current collector tabs. The current collector tabs and the lead terminal are coupled to each other via an electrically-conductive tab guiding part.

公开(公告)号：US20210276453A1

公开(公告)日：2021-09-09

申请号：US17184613

申请日：2021-02-25

Applicant: HONDA MOTOR CO., LTD.

Inventor： Takuya TANIUCHI ,  Masahiro OHTA

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

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：US20210028449A1

公开(公告)日：2021-01-28

申请号：US16980840

申请日：2018-12-07

Applicant: HONDA MOTOR CO., LTD.

Inventor： Takuya TANIUCHI ,  Masahiro OHTA

IPC: H01M4/36 ,  H01M4/66 ,  H01M10/0562

Abstract: The present invention is a solid-state battery formed of a plurality of repeatedly stacked solid-state battery cells each including a positive electrode layer, a negative electrode layer, a solid-state electrolyte layer, and a pair of current collector layers sandwiching said layers. One surface of each of the current collector layers is in contact with the positive electrode layer or the negative electrode layer. The other surface of the current collector layer is in contact with the current collector layer of the neighboring solid-state battery cell. The coefficient of friction on the other surface of the current collector layer is higher than the coefficient of friction on the one surface of the current collector layer. This can provide a solid-state battery that does not suffer displacement or rotation when stacking.

公开(公告)号：US20210020880A1

公开(公告)日：2021-01-21

申请号：US16982034

申请日：2019-02-27

Applicant: HONDA MOTOR CO., LTD.

Inventor： Takuya TANIUCHI ,  Masahiro OHTA

IPC: H01M2/10 ,  H01M2/26 ,  H01M10/48

Abstract: Provided is a battery module having a high energy density and exhibiting suppressed electrode displacement or peeling during vibration.
In the present invention, a residual space in a battery cell, which is necessary for the lithium ion secondary batteries employing the liquid electrolyte is eliminated, and additionally a module component is disposed in a portion that would provide the residual space.

公开(公告)号：US20200243933A1

公开(公告)日：2020-07-30

申请号：US16724399

申请日：2019-12-23

Applicant: Honda Motor Co.,Ltd.

Inventor： Takuya TANIUCHI ,  Masahiro OHTA

IPC: H01M10/6554 ,  H01M10/0563 ,  H01M10/0562 ,  H01M10/058 ,  H01M2/20 ,  H01M10/613 ,  H01M10/04 ,  H01M2/10

Abstract: Provided is a battery module having a structure for cooling efficiently without affecting the volume of the entire module. By utilizing dead spaces uniquely present in laminate cells and conducting heat in a lamination direction of electrodes to dissipate the heat, the cooling efficiency is improved without increasing the volume of the entire module.