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公开(公告)号：US20250105409A1
公开(公告)日：2025-03-27
申请号：US18730810
申请日：2023-01-26
Inventor： TAKESHI NAGAO
IPC: H01M50/152 , H01G11/80 , H01M50/107 , H01M50/169
Abstract: A power storage device (battery) includes: an outer covering can in a bottomed cylindrical shape, the outer covering can accommodating an electrode body; and a sealing member that closes an opening of the outer covering can. The sealing member includes a sealing plate and a reinforcing plate that is disposed on an outer peripheral side of the sealing plate, the reinforcing plate being joined with the sealing plate at a boundary extending in a thickness direction of the sealing plate, and the reinforcing plate is made of a member having a rigidity higher than rigidity of the sealing plate.
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公开(公告)号：US20240283114A1
公开(公告)日：2024-08-22
申请号：US18681139
申请日：2022-09-21
Inventor： KAZUMICHI SHIMIZU , TAKESHI NAGAO , MOTONORI MORIKAZU
IPC: H01M50/578 , H01G11/80 , H01M50/107 , H01M50/152 , H01M50/184
CPC classification number: H01M50/578 , H01G11/80 , H01M50/107 , H01M50/152 , H01M50/184 , H01M2200/20
Abstract: An electricity storage device includes a case, an electricity storage element, a lead, and a sealing member. The sealing member includes an insulative gasket including a base, and an electrically conductive sealing plate. The sealing plate includes a displaceable part provided with a protrusion protruding toward the electricity storage element. The base is disposed between the sealing plate and the electricity storage element. The base includes a through hole. The protrusion is inserted into the through hole. The lead includes a folded part formed by welding at least double and being joined by at least one weld-deposited part. The protrusion and the folded part of the lead are connected to each other. The protrusion is displaced in a direction away from the lead in response to an increase of an internal pressure of the case so as to be disconnected from the lead.
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公开(公告)号：US20230307749A1
公开(公告)日：2023-09-28
申请号：US18041232
申请日：2021-09-17
Inventor： KAZUMICHI SHIMIZU , TAKESHI NAGAO , SHINYA GESHI
IPC: H01M50/184 , H01M50/152 , H01M50/19 , H01M50/169
CPC classification number: H01M50/184 , H01M50/152 , H01M50/19 , H01M50/169 , H01M10/0587
Abstract: An electricity storage device to be disclosed includes: an electrode assembly including a first electrode and a second electrode; a can accommodating the electrode assembly and including a bottomed tubular shape with an opening provided at one end; and a sealing material joined to the one end of the can to seal the opening. The sealing material includes a first ring that is conductive, a second ring that is conductive and joined to the first ring, a terminal plate that is conductive provided between the first ring and the second ring, and an insulation ring insulating the first ring and the second ring from the terminal plate. An outer peripheral edge of the terminal plate is held between the first ring and the second ring with the insulation ring being put therebetween.
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公开(公告)号：US20240304914A1
公开(公告)日：2024-09-12
申请号：US18658352
申请日：2024-05-08
Inventor： KOTA SHIMIZU , TAKAAKI KASSAI , KAZUMICHI SHIMIZU , TAKESHI NAGAO
IPC: H01M50/191 , H01M50/107 , H01M50/119 , H01M50/169 , H01M50/184 , H01M50/186
CPC classification number: H01M50/191 , H01M50/107 , H01M50/119 , H01M50/169 , H01M50/184 , H01M50/186
Abstract: Provided is a battery including: a battery can made of metal and including a tubular part provided at one end with an opening edge part and a bottom part closing another end of the tubular part; an electrode body housed inside the tubular part; and a sealing member bonded to the opening edge part of the battery can to seal an opening of the opening edge part. The sealing member includes a gasket part, a disk part made of metal, a ring part with a center part in which the disk part is crimped with the gasket part interposed between the center part and the disk part, and an intermediate member bonded to an upper surface of the ring part.
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Patent Agency Ranking
公开(公告)号：US20220021071A1
公开(公告)日：2022-01-20
申请号：US17296393
申请日：2019-11-08
Inventor： KEISUKE SHIMIZU , TAKESHI NAGAO , GORO FUJITA
IPC: H01M50/342 , H01M10/613 , H01M10/625 , H01M10/633 , H01M10/6552 , H01M10/663 , H01M10/6568 , H01M10/6563 , B60L3/00 , B60L58/26 , B60Q9/00
Abstract: Battery pack (10) having a substantially sealed structure includes a plurality of cells (11-16) each having an opened portion provided in order to discharge an internal gas when an internal pressure rises. Non-resettable pressure switch (30, 31) that is connected to controller (50) by a signal line. The pressure switch changes irreversibly from a significant state to a non-significant state when a pressure in battery pack (10) is greater than a predetermined pressure threshold value.
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公开(公告)号：US20170237275A1
公开(公告)日：2017-08-17
申请号：US15502835
申请日：2016-01-15
Inventor： HIROSHI TENMYO , TAKASHI HASEGAWA , HIROSHI TAKASAKI , TAKESHI NAGAO
CPC classification number: H02J7/0068 , H01M2/1077 , H01M10/44 , H01M10/441 , H01M2200/108 , H01M2220/10 , H01M2220/20 , H02J3/32 , H02J7/0022 , H02J7/007 , Y02T10/7055
Abstract: An electricity storage device includes a battery, a discharge device, and a controller for controlling charging and discharging of the battery. The discharge device includes a swelling member, a movable switch, and a discharge switch. When the swelling member swells, the movable switch is moved. When the movable switch is moved, the discharge switch is turned on. A signal indicating that the discharge switch is turned on is transmitted to the controller to cause the battery to start discharging of electricity.
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公开(公告)号：US20250038378A1
公开(公告)日：2025-01-30
申请号：US18681122
申请日：2022-09-21
Inventor： TAKESHI NAGAO , KAZUMICHI SHIMIZU
IPC: H01M50/578 , H01G11/74 , H01G11/80 , H01G11/84 , H01M10/0525 , H01M50/107 , H01M50/186 , H01M50/533
Abstract: A power storage device includes a case, a power storage element, a lead, and a sealing member. The sealing member includes an insulating gasket that includes a base; and a conductive sealing plate. The sealing plate includes a displaceable part that includes a protrusion projecting toward the power storage element. The base is disposed between the sealing plate and the power storage element. The power storage device further includes a reinforcing member reinforcing the base. The base includes a first through hole, and the reinforcing member includes a second through hole. The protrusion is inserted in the first and second through holes. The protrusion is connected to the lead. The protrusion is disconnected from the lead when displaced in a direction away from the lead in response to an increase in internal pressure of the case.
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公开(公告)号：US20210257704A1
公开(公告)日：2021-08-19
申请号：US17253599
申请日：2019-02-08
Inventor： KOICHI SAWADA , TAKESHI NAGAO , JIRO MURATSU , KEISUKE NAITO
IPC: H01M50/503 , H01M50/213
Abstract: A cell module includes a plurality of cells that each have a cylindrical shape and include a positive-electrode terminal and a negative-electrode terminal disposed on one end of the cell. One of the terminals is located at a center, and the other terminal is located on a circumferential edge and is electrically connected to a side surface of a tube of each of the cells, a connection intervening member mounted on the other terminal includes a tab extending along the side surface of the tube and electrically connected to the side surface, and a hole that causes the center of the one end to be exposed. The plurality of cells make up a cell block where the one ends are oriented in an identical direction, and cells adjacent to each other are aligned in rows, on the one ends of the plurality of cells, a plate having electrical insulating properties is disposed, the plate is provided with a hole that causes the one end of each of the cells to be exposed and is further provided with a plurality of conductive members on a surface of the plate distant from the cells, the conductive members extend along the rows of the cells aligned, two of the conductive members are disposed for each cell block and include terminal connectors electrically connected to terminals, having identical polarity, of the cells in each cell block, and the other terminals are connected with the terminal connectors through the connection intervening member.
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公开(公告)号：US20200212507A1
公开(公告)日：2020-07-02
申请号：US16639087
申请日：2018-07-11
Inventor： KEISUKE SHIMIZU , TAKESHI NAGAO
IPC: H01M10/42 , H01M2/10 , H01M10/48 , H01M10/04 , H01M10/613 , H01M10/647
Abstract: In an electricity storage system where each of electricity storage modules includes cells that are bound in a state where the cells are stacked in a row. A management device acquires detection values from sensors that are respectively mounted on the electricity storage modules so as to detect expansion or contraction of the cells in a stacking direction. The management device is configured to compare a detection value acquired from the sensor mounted on one electricity storage module to be inspected and detection values acquired from the sensors mounted on other electricity storage modules, and to detect an abnormality in one of the cells included in the one electricity storage module to be inspected.
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