公开(公告)号：US20240128617A1

公开(公告)日：2024-04-18

申请号：US18486982

申请日：2023-10-13

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Satomi YAMAMOTO ,  Masayoshi Haga ,  Masashi Chihara ,  Takenori Ikeda ,  Nana Kurashita

IPC: H01M50/578 ,  H01M50/103 ,  H01M50/15 ,  H01M50/55

CPC classification number: H01M50/578 ,  H01M50/103 ,  H01M50/15 ,  H01M50/55

Abstract: A power storage cell includes an electrode assembly, a cell case, and an external terminal. The cell case has a case main body and a lid. The lid has a lid main body connected to an opening of the case main body and charged positively or negatively in the electrode assembly, and a short-circuit member connected to the lid main body, the short-circuit member being able to short-circuit the lid main body and the external terminal. The external terminal includes a terminal plate. The short-circuit member includes an elastic portion made of a conductive resin. The elastic portion is separated from the terminal plate when an internal pressure of the cell case is less than a predetermined pressure, and is elastically deformed to come into contact with the terminal plate when the internal pressure of the cell case is equal to or more than the predetermined pressure.

公开(公告)号：US20220102820A1

公开(公告)日：2022-03-31

申请号：US17474336

申请日：2021-09-14

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Satomi YAMAMOTO

IPC: H01M50/569 ,  H01M50/54 ,  H01M10/48 ,  H01M4/13

Abstract: A battery including electrode bodies connected in series, wherein the battery is capable of detecting the voltage of each electrode body. The battery includes electrode bodies, and an exterior body including an inner region configured to house the electrode bodies, and the battery includes at least a first electrode body and a second electrode body, the first electrode body includes an electrode tab P, the second electrode body includes an electrode tab R having an opposite polarity to the electrode tab P, the electrode tab P and the electrode tab R are connected in the inner region, the battery includes a voltage detector placed so as to extend from the inner region to an outer region of the exterior body, and as the voltage detector, the battery includes a voltage detector α connected to a connecting portion of the electrode tab P and the electrode tab R.

公开(公告)号：US20240154274A1

公开(公告)日：2024-05-09

申请号：US18471889

申请日：2023-09-21

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Satomi YAMAMOTO ,  Masayoshi Haga ,  Masashi Chihara ,  Takenori Ikeda ,  Nana Kurashita

IPC: H01M50/578 ,  H01M50/15 ,  H01M50/176

CPC classification number: H01M50/578 ,  H01M50/15 ,  H01M50/176 ,  H01M2200/20

Abstract: A power storage cell comprises an electrode assembly, a cell case, and an external terminal. The cell case has a case body and a lid. The lid has a lid body electrically charged with the same polarity as that of a positive electrode or a negative electrode, an invertible plate capable of short-circuiting between the lid body and the external terminal, and a prevention part connected to the invertible plate. The invertible plate is deformable between a normal shape and an inverted shape. The lid body has a receiving portion that receives the prevention part when the invertible plate is in the inverted shape. The receiving portion allows the prevention part to pass therethrough when the invertible plate is deforming from the normal shape to the inverted shape, and is in contact with the prevention part when the invertible plate is in the inverted shape.

公开(公告)号：US20230347443A1

公开(公告)日：2023-11-02

申请号：US18214629

申请日：2023-06-27

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Satomi YAMAMOTO

IPC: B23K20/10 ,  H01M10/0525 ,  H01M10/04 ,  H01M50/557 ,  H01M50/548 ,  H01M50/566 ,  H01M50/533

CPC classification number: B23K20/10 ,  H01M10/0525 ,  H01M10/0409 ,  H01M50/557 ,  H01M50/548 ,  H01M50/566 ,  H01M50/533 ,  B23K2101/38

Abstract: According to the present disclosure, the breakage of an exterior body due to rising deformation of an electrode terminal can be prevented. The manufacturing method herein disclosed includes the steps of: bringing a lower surface of a terminal connecting part into contact with a first terminal, and bringing an upper surface of the terminal connecting part into contact with a second terminal; interposing the terminal connecting part, the first terminal, and the second terminal between a horn and an anvil, and carrying out ultrasonic welding; and accommodating the electrode body into the exterior body. Such a manufacturing method is characterized in that a width dimension of the horn is longer than a width dimension of the second terminal, and a width dimension of the anvil is longer than the width dimension of the second terminal. This can prevent rising deformation of the electrode terminal, and can prevent breakage of the exterior body by the deformed electrode terminal.

公开(公告)号：US20220102771A1

公开(公告)日：2022-03-31

申请号：US17479288

申请日：2021-09-20

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Satomi YAMAMOTO

IPC: H01M10/48 ,  H01M50/538

Abstract: A main object of the present disclosure is to provide a battery capable of accurately detecting the temperature of an electrode body. The present disclosure achieves the object by providing a battery comprising an electrode body, and an exterior body including an inner region configured to house the electrode body, and the battery includes a temperature detector placed so as to extend from the inner region to an outer region of the exterior body, the temperature detector includes a detector portion placed in the inner region and configured to detect a temperature of the electrode body, and a signal wire connected to the detecting portion, the electrode body includes an insulating protective layer on a side thereof, and the detector portion is placed on a surface of the insulating protective layer.

公开(公告)号：US20190229364A1

公开(公告)日：2019-07-25

申请号：US16250057

申请日：2019-01-17

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Takuma SAKAMOTO ,  Satomi YAMAMOTO ,  Koichi TANIMOTO ,  Shinya OMURA

IPC: H01M10/04 ,  H01M2/10

Abstract: Provided is a battery module that allows suppressing impairment of battery performance, through suitable control of a restraining pressure that is exerted in the stacking direction of a stack, also in a case where unit cells expand/shrink when charged/discharged. The battery module is provided with a stack in which a plurality of unit cells is stacked, and with a pressure regulation member, which is disposed at least at one site from among a gap between the stacked unit cells, and a first end and a second end in the stacking direction, and which regulates a restraining pressure exerted in the stacking direction of the stack. The pressure regulation member is provided with a liquid holding section and a liquid storage section. The liquid holding section is provided with a liquid holding body capable of holding a liquid. The liquid storage section has a space capable of storing the liquid.

公开(公告)号：US20180226620A1

公开(公告)日：2018-08-09

申请号：US15869370

申请日：2018-01-12

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Mizuho MATSUMOTO ,  Tomohiro MATSUURA ,  Satomi YAMAMOTO ,  Yuki YAMASAKI

IPC: H01M2/08 ,  H01M2/36 ,  H01M2/10 ,  H01M2/12 ,  H01M10/0525 ,  H01G11/80 ,  H01G11/74 ,  H01G11/22

Abstract: A sealed cell according to the present invention includes an angular case 50 that accommodates an electrode body. The angular case 50 includes a concave case main body 52, having an opening, and a sealing member 54. The case main body 52 has a flat surface 52a opposed to the sealing member 54, with the electrode body interposed therebetween, and a side wall 52b rising from the flat surface 52a. The peripheral edge portion of the opening provided in the case main body 52 and the sealing member 54 are joined to each other by seal welding. Concave and convex portions including concave portions 56a, 156a recessed toward the inside of the case and convex portions 56b flush with the flat surface 52a are formed on at least one side 58a portion of end sides of the flat surface 52a. Electrode terminals 80, 82 are disposed on bottom surfaces of the concave portions 56a, 156a.

公开(公告)号：US20180183026A1

公开(公告)日：2018-06-28

申请号：US15847223

申请日：2017-12-19

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Mizuho MATSUMOTO ,  Tomohiro MATSUURA ,  Satomi YAMAMOTO ,  Takashi TAKIMOTO

IPC: H01M2/12 ,  H01M2/10

Abstract: A battery pack is a battery pack that is configured by arranging plural chargeable-dischargeable single cells in a specified direction. Each of the plural single cells includes: an electrode body including a positive electrode and a negative electrode; and a box-shaped battery case accommodating the electrode body and an electrolyte. The two adjacent single cells in the battery pack are provided with gas discharge valves in mutually opposing surfaces of the battery cases, each of the gas discharge valves discharging gas that is produced in the battery case. In the battery cases provided in the two adjacent single cells, the gas discharge valves that are provided in the mutually opposing surfaces are disposed at positions that do not overlap each other when seen in an arrangement direction of the single cells.

公开(公告)号：US20250015461A1

公开(公告)日：2025-01-09

申请号：US18894450

申请日：2024-09-24

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Satomi YAMAMOTO

IPC: H01M50/553 ,  H01M10/0525 ,  H01M10/0585 ,  H01M50/531 ,  H01M50/54

Abstract: A main object of the present disclosure is to provide a battery capable of suppressing the temperature increase of an electrode terminal even when the battery is, for example, fast-charged. The present disclosure achieves the object by providing a battery comprising an electrode body, and an exterior body including an inner region configured to house the electrode body, and the battery includes an electrode terminal placed so as to extend from the inner region to an outer region of the exterior body, the electrode terminal includes an inner current collecting portion placed in the inner region and connected to an electrode tab of the electrode body, and an outer current collecting portion placed in the outer region, and a width of the inner current collecting portion is larger than a width of the outer current collecting portion.

公开(公告)号：US20240162585A1

公开(公告)日：2024-05-16

申请号：US18503767

申请日：2023-11-07

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Satomi YAMAMOTO ,  Masayoshi HAGA ,  Masashi CHIHARA ,  Takenori IKEDA ,  Nana KURASHITA

IPC: H01M50/578 ,  H01M50/103 ,  H01M50/15 ,  H01M50/55 ,  H01M50/553

CPC classification number: H01M50/578 ,  H01M50/103 ,  H01M50/15 ,  H01M50/55 ,  H01M50/553 ,  H01M2200/20

Abstract: A power storage cell includes: an electrode assembly; a cell case; and an external terminal. The cell case has a case main body and a lid. The lid has a lid main body charged positively or negatively, an inversion plate that is able to short-circuit the lid main body and the external terminal, and a protrusion protruding from the inversion plate toward the external terminal. The inversion plate is deformable between a steady-state shape and an inversion shape, the steady-state shape being a shape curved to project in a direction away from the external terminal, the inversion shape being a shape curved to project toward the external terminal with the inversion plate being in contact with the external terminal. The external terminal has a holding portion that holds the protrusion when the inversion plate is in the inversion shape.