公开(公告)号：US10396321B2

公开(公告)日：2019-08-27

申请号：US15063978

申请日：2016-03-08

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yuya Ishihara ,  Jumpei Terashima ,  Ayumu Kamakura

IPC: H01M2/10 ,  H01G2/10 ,  H01M10/0525

Abstract: A battery pack spacer is divided into a first region and a second region, the first region includes an end portion in a first direction and occupies half of an entire region of the spacer in a second direction from the end portion in the first direction, the second region includes an end portion in the second direction and occupies half of the entire region of the spacer in the first direction from the end portion in the second direction, and the second region has higher compressibility in the single cell arrangement direction than the first region.

公开(公告)号：US10270077B2

公开(公告)日：2019-04-23

申请号：US15216769

申请日：2016-07-22

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yuya Ishihara ,  Akihiro Ochiai

IPC: H01M2/18 ,  H01M2/16 ,  H01M4/04 ,  H01M4/131 ,  H01M4/50 ,  H01M4/505 ,  H01M4/52 ,  H01M4/525 ,  H01M4/62 ,  H01M4/66 ,  H01M10/04 ,  H01M10/0525 ,  H01M10/42 ,  H01M4/36 ,  H01M10/052

Abstract: A non-aqueous electrolyte secondary battery includes: a positive electrode plate; a negative electrode plate; and a separator disposed between the positive electrode plate and the negative electrode plate. The separator includes a porous resin layer. The porous resin layer is made of polyolefin having a melting point of 80° C. or more and 135° C. or less. At least one of the positive electrode plate and the negative electrode plate has a surface facing the porous resin layer. The surface forms a contact angle of 30° or more with a molten droplet of the polyolefin.

公开(公告)号：US11002799B2

公开(公告)日：2021-05-11

申请号：US16900232

申请日：2020-06-12

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Kensaku Miyazawa ,  Shinichi Hamasaki ,  Yuya Ishihara ,  Tetsuya Kaneko

IPC: H01M10/48 ,  H01G13/00 ,  G01R31/50 ,  G01R31/3842 ,  H01M10/44 ,  H01M10/42 ,  G01R31/385 ,  H02J7/00 ,  G01R31/388

Abstract: A method of evaluating a power storage device includes at least [a] to [f] below. [a] A power storage device is prepared. [b] A charge level of the power storage device is adjusted to produce a first potential difference between a positive electrode and a negative electrode. [c] The positive electrode or the negative electrode is selected as a reference electrode. [d] After the charge level is adjusted, an operation to insert a conductive rod-shaped member into a stack portion along a direction of stack of the positive electrode and the negative electrode is performed while a second potential difference between the reference electrode and the rod-shaped member is measured. [e] The rod-shaped member is stopped. [f] The power storage device is evaluated based on a state of the power storage device after the rod-shaped member is stopped.

公开(公告)号：US10725119B2

公开(公告)日：2020-07-28

申请号：US16197571

申请日：2018-11-21

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Kensaku Miyazawa ,  Shinichi Hamasaki ,  Yuya Ishihara ,  Tetsuya Kaneko

IPC: H01M10/48 ,  H01G13/00 ,  G01R31/50 ,  G01R31/3842 ,  H01M10/44 ,  H01M10/42 ,  G01R31/385 ,  H02J7/00 ,  H01J7/00 ,  G01R31/388

Abstract: A method of evaluating a power storage device includes at least [a] to [f] below. [a] A power storage device is prepared. [b] A charge level of the power storage device is adjusted to produce a first potential difference between a positive electrode and a negative electrode. [c] The positive electrode or the negative electrode is selected as a reference electrode. [d] After the charge level is adjusted, an operation to insert a conductive rod-shaped member into a stack portion along a direction of stack of the positive electrode and the negative electrode is performed while a second potential difference between the reference electrode and the rod-shaped member is measured. [e] The rod-shaped member is stopped. [f] The power storage device is evaluated based on a state of the power storage device after the rod-shaped member is stopped.

公开(公告)号：US12241941B2

公开(公告)日：2025-03-04

申请号：US18601023

申请日：2024-03-11

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Kensaku Miyazawa ,  Shinichi Hamasaki ,  Yuya Ishihara ,  Tetsuya Kaneko

IPC: G01R31/385 ,  G01R31/3842 ,  G01R31/388 ,  G01R31/50 ,  H01M10/42 ,  H01M10/44 ,  H02J7/00

Abstract: A method of evaluating an all-solid-state battery includes preparing the all-solid-state battery. A charge level of the all-solid-state battery is adjusted to produce a first potential difference between a positive electrode and a negative electrode. The positive electrode or the negative electrode is selected as a reference electrode. After the charge level is adjusted, an operation to insert a conductive rod-shaped member into a stack portion along a direction of stack of the positive electrode and the negative electrode is performed while a second potential difference between the reference electrode and the rod-shaped member is measured. The rod-shaped member is stopped. The all-solid-state battery is evaluated based on a state of the all-solid-state battery after the rod-shaped member is stopped.

公开(公告)号：US11650260B2

公开(公告)日：2023-05-16

申请号：US17224340

申请日：2021-04-07

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Kensaku Miyazawa ,  Shinichi Hamasaki ,  Yuya Ishihara ,  Tetsuya Kaneko

IPC: G01R31/385 ,  G01R31/3842 ,  H01M10/44 ,  H01M10/42 ,  H02J7/00 ,  G01R31/50 ,  G01R31/388

CPC classification number: G01R31/3865 ,  G01R31/3842 ,  G01R31/50 ,  H01M10/4285 ,  H01M10/44 ,  H02J7/0069 ,  G01R31/388

Abstract: A method of evaluating a power storage device includes at least [a] to [f] below. [a] A power storage device is prepared. [b] A charge level of the power storage device is adjusted to produce a first potential difference between a positive electrode and a negative electrode. [c] The positive electrode or the negative electrode is selected as a reference electrode. [d] After the charge level is adjusted, an operation to insert a conductive rod-shaped member into a stack portion along a direction of stack of the positive electrode and the negative electrode is performed while a second potential difference between the reference electrode and the rod-shaped member is measured. [e] The rod-shaped member is stopped. [f] The power storage device is evaluated based on a state of the power storage device after the rod-shaped member is stopped.

公开(公告)号：US20190162771A1

公开(公告)日：2019-05-30

申请号：US16197571

申请日：2018-11-21

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Kensaku Miyazawa ,  Shinichi Hamasaki ,  Yuya Ishihara ,  Tetsuya Kaneko

IPC: G01R31/02 ,  G01R31/3842 ,  G01R31/388 ,  H02J7/00

Abstract: A method of evaluating a power storage device includes at least [a] to [f] below. [a] A power storage device is prepared. [b] A charge level of the power storage device is adjusted to produce a first potential difference between a positive electrode and a negative electrode. [c] The positive electrode or the negative electrode is selected as a reference electrode. [d] After the charge level is adjusted, an operation to insert a conductive rod-shaped member into a stack portion along a direction of stack of the positive electrode and the negative electrode is performed while a second potential difference between the reference electrode and the rod-shaped member is measured. [e] The rod-shaped member is stopped. [f] The power storage device is evaluated based on a state of the power storage device after the rod-shaped member is stopped.

公开(公告)号：US12253566B2

公开(公告)日：2025-03-18

申请号：US18295517

申请日：2023-04-04

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Kensaku Miyazawa ,  Shinichi Hamasaki ,  Yuya Ishihara ,  Tetsuya Kaneko

IPC: G01R31/385 ,  G01R31/3842 ,  G01R31/388 ,  G01R31/50 ,  H01M10/42 ,  H01M10/44 ,  H02J7/00

Abstract: A method of evaluating a power storage device includes at least [a] to [f] below. [a] A power storage device is prepared. [b] A charge level of the power storage device is adjusted to produce a first potential difference between a positive electrode and a negative electrode. [c] The positive electrode or the negative electrode is selected as a reference electrode. [d] After the charge level is adjusted, an operation to insert a conductive rod-shaped member into a stack portion along a direction of stack of the positive electrode and the negative electrode is performed while a second potential difference between the reference electrode and the rod-shaped member is measured. [e] The rod-shaped member is stopped. [f] The power storage device is evaluated based on a state of the power storage device after the rod-shaped member is stopped.

公开(公告)号：US20240219473A1

公开(公告)日：2024-07-04

申请号：US18601023

申请日：2024-03-11

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Kensaku MIYAZAWA ,  Shinichi Hamasaki ,  Yuya Ishihara ,  Tetsuya Kaneko

IPC: G01R31/385 ,  G01R31/3842 ,  G01R31/388 ,  G01R31/50 ,  H01M10/42 ,  H01M10/44 ,  H02J7/00

CPC classification number: G01R31/3865 ,  G01R31/3842 ,  G01R31/50 ,  H01M10/4285 ,  H01M10/44 ,  H02J7/0069 ,  G01R31/388

Abstract: A method of evaluating an all-solid-state battery includes preparing the all-solid-state battery. A charge level of the all-solid-state battery is adjusted to produce a first potential difference between a positive electrode and a negative electrode. The positive electrode or the negative electrode is selected as a reference electrode. After the charge level is adjusted, an operation to insert a conductive rod-shaped member into a stack portion along a direction of stack of the positive electrode and the negative electrode is performed while a second potential difference between the reference electrode and the rod-shaped member is measured. The rod-shaped member is stopped. The all-solid-state battery is evaluated based on a state of the all-solid-state battery after the rod-shaped member is stopped.

公开(公告)号：US10718816B2

公开(公告)日：2020-07-21

申请号：US16222170

申请日：2018-12-17

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yuya Ishihara ,  Kensaku Miyazawa ,  Tetsuya Kaneko

IPC: H01M10/48 ,  H01G13/00 ,  G01R31/385 ,  H01M10/42 ,  H01G11/84 ,  G01R31/36 ,  G01R31/64

Abstract: (a) A power storage device is prepared. (b) An evaluation jig is prepared. The evaluation jig includes an insulating tubular member and a conductive needle-shaped member. (c) A charge level of the power storage device is adjusted. (d) A positive electrode or a negative electrode is selected as a reference electrode. (e) An operation to insert the evaluation jig into the power storage device is performed. (f) The insertion operation is controlled to stop the tubular member when a tip end of the needle-shaped member comes in contact with an electrode different from the reference electrode. (g) Short-circuiting through the needle-shaped member is caused. (h) The power storage device is evaluated based on a state of the short-circuiting power storage device.