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公开(公告)号：US20220085442A1
公开(公告)日：2022-03-17
申请号：US17414782
申请日：2019-12-19
Inventor： TATSUYA HIRANO , KAZUTOSHI KOHIRA
IPC: H01M50/107 , H01M50/179 , H01M50/183
Abstract: A battery includes a battery can which includes a cylindrical portion having an opening edge portion at one end portion and a bottom portion closing the other end portion of the cylindrical portion, an electrode assembly which is housed in the cylindrical portion, and an opening sealing body which seals an opening formed in the opening edge portion. The opening sealing body includes a terminal portion and a gasket interposed in a compressed state between the terminal portion and the opening edge portion. The opening edge portion includes at least a base portion extending in an axial direction of the cylindrical portion and a tongue portion protruding from the base portion, and the tongue portion extends inward in a radial direction of the cylindrical portion so as to cover an upper surface of the gasket.
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公开(公告)号：US20220037723A1
公开(公告)日：2022-02-03
申请号：US17296402
申请日：2019-11-21
Inventor： KAZUTOSHI KOHIRA , KAZUMICHI SHIMIZU
IPC: H01M50/186 , H01M50/107 , H01M50/184 , H01M50/152
Abstract: A battery includes a battery can including a cylinder having a cylindrical shape and having an opening edge at one end, an electrode body, and a sealing member sealing an opening surrounded by the opening edge, in which the sealing member has a sealing plate electrically connected to a first electrode of the electrode body, a cap having a through hole corresponding to the sealing plate electrically insulated from the sealing plate, and a gasket that seals between the cylinder and the cap, the cap has a top plate having a ring shape and facing the cylinder, a side wall that is erected in an axial direction from a peripheral edge of the top plate and extends so as to overlap an outer surface of the cylinder, and a rib that is erected in the axial direction from the top plate inside of the side wall and extends so as to overlap an inner surface of the cylinder, the gasket is compressed in a radial direction of the cylinder between the rib and the cylinder, and the battery can and the cap are electrically connected to a second electrode of the electrode body.
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公开(公告)号：US20240162539A1
公开(公告)日：2024-05-16
申请号：US18549189
申请日：2022-03-14
Inventor： KAZUTOSHI KOHIRA , SHINYA GESHI , JUNYA HASHIMOTO
IPC: H01M50/152 , H01M10/04 , H01M50/107 , H01M50/167 , H01M50/184 , H01M50/186
CPC classification number: H01M50/152 , H01M10/0422 , H01M50/107 , H01M50/167 , H01M50/184 , H01M50/186
Abstract: A sealing plate of the present disclosure includes a flange part in an annular shape provided on an outer peripheral edge, a raised part in an annular shape located nearer to a center than the flange part and being thicker than the flange part, a fragile part located nearer to the center than the raised part and being thinnest in the sealing plate, a relay part in an annular shape located nearer to the center than the fragile part, and a middle part located nearer to the center than the relay part and including a center part of the sealing plate, wherein in the thickness direction of the sealing plate, the fragile part is apart from the flange part in the first direction, and the relay part protrudes toward a second direction that is opposite to the first direction in the thickness direction.
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Patent Agency Ranking
公开(公告)号：US20230037722A1
公开(公告)日：2023-02-09
申请号：US17757406
申请日：2020-12-22
Inventor： KAZUTOSHI KOHIRA , SHINYA GESHI
IPC: H01M50/186 , H01M50/516 , H01M50/543
Abstract: Provided in a power storage module including: a plurality of power storage devices; and a first current collector that holds the plurality of power storage devices. The plurality of power storage devices each include a case having an opening, an electrode assembly including a first electrode and a second electrode housed in the case, and a sealing member that seals the opening. The case includes a tubular part including one end provided with the opening, and a bottom that closes the other end of the tubular part. The case is electrically connected to the first electrode. The first current collector has a plurality of first through-holes that set and position the corresponding one of the plurality of electric storage devices, and the plurality of first through-holes each have a periphery electrically connected to the case. This structure enables improving energy density of the power storage module.
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公开(公告)号：US20230060460A1
公开(公告)日：2023-03-02
申请号：US17760110
申请日：2021-02-19
Inventor： KAZUMICHI SHIMIZU , KAZUTOSHI KOHIRA , SHINYA GESHI
IPC: H01M50/183 , H01M50/107 , H01M50/533 , H01M50/152 , H01M10/04 , H01M50/543
Abstract: A power storage device includes: an electrode group including first and second electrodes; a case accommodating the electrode group therein, the case having an opening; and a sealing body closing the opening of the case. The sealing body includes: an annular sealing plate having a first surface and a second surface opposite to the first surface, the sealing plate having a first through-hole provided therein; a terminal plate having a third surface and a fourth surface opposite to the third surface, the third surface facing the first surface of the sealing plate; and an annular gasket disposed between the sealing plate and the terminal plate, the gasket having a second through-hole overlapping the first through-hole. The sealing plate includes a first recessed portion and an outer peripheral portion connected to a peripheral edge of the first recessed portion, the first recessed portion having a recess in the first surface of the sealing plate and having the first through-hole therein. The terminal plate includes a projecting portion projecting from the third surface toward the sealing plate and a flange portion extended from the projecting portion in a second direction intersecting with a first direction. The projecting portion has an end surface closing the first and second through-holes. The projecting portion of the terminal plate is accommodated in the first recessed portion. A peripheral edge of the outer peripheral portion of the sealing plate is joined with an opening end portion of the case. The first electrode and the second electrode are electrically connected to the terminal plate and the case, respectively.
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公开(公告)号：US20230048822A1
公开(公告)日：2023-02-16
申请号：US17758590
申请日：2021-01-22
Inventor： SHINYA GESHI , KAZUTOSHI KOHIRA , SHINGO KUME
IPC: H01M50/578 , H01G11/80 , H01M50/107 , H01M50/184 , H01M50/179 , H01M50/533 , H01M50/342
Abstract: A power storage device includes a case, a power storage element disposed in the case, a lead connected to an electrode of the power storage element, a sealing member sealing an opening of the case. The sealing member includes a gasket and a sealing plate having conductivity. The gasket includes a base having a disk shape. The base is disposed between the sealing plate and the power storage element. The base has a through-hole formed therein. The sealing plate includes a protrusion inserted in the through-hole. The protrusion of the sealing plate is connected to the lead. The protrusion is configured to be displaced in a direction away from the lead in accordance with 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：US20230062553A1
公开(公告)日：2023-03-02
申请号：US17760107
申请日：2021-02-19
Inventor： KAZUMICHI SHIMIZU , KAZUTOSHI KOHIRA , SHINYA GESHI
IPC: H01M50/183 , H01M50/107 , H01M50/533 , H01M10/04 , H01M50/152
Abstract: A power storage device includes an electrode group, a case having an opening, and a sealing body. The sealing body includes an annular sealing plate, a terminal cap, and an insulating gasket. The sealing plate includes a first wall portion with a tubular shape and a flange portion extending from one end of the first wall portion outward in a radial direction of the first wall portion. The terminal cap includes a cover portion with a plate shape and a crimp portion connected with a periphery of the cover portion. The cover portion closes an opening of the first wall portion surrounded by another end of the first wall portion. The gasket includes a second wall portion with a tubular shape facing an outer peripheral surface of the first wall portion and an annular base disposed between the cover portion and the another end of the first wall portion. The crimp portion includes a third wall portion with a tubular shape surrounding at least a part of the second wall portion. The third wall portion compress the second wall portion. A peripheral portion of the sealing plate is joined to an opening end portion of the case.
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公开(公告)号：US20220077527A1
公开(公告)日：2022-03-10
申请号：US17414766
申请日：2019-12-19
Inventor： KAZUTOSHI KOHIRA , TATSUYA HIRANO
IPC: H01M50/188 , H01M50/179 , H01M50/107 , H01M50/184
Abstract: A battery includes a battery can including a cylindrical portion and a bottom portion, the cylindrical portion including an opening edge portion at one end portion of the cylindrical portion, the bottom portion closing the other end portion of the cylindrical portion; an electrode body housed in the cylindrical portion; a sealing member sealing an opening of the opening edge portion; and a fixing member fixing the sealing member to the battery can. The sealing member includes a terminal portion, an outer ring, and a first gasket, the outer ring being disposed along a peripheral edge of the terminal portion, and the first gasket being interposed between the opening edge portion and an external peripheral edge portion of the outer ring. The fixing member compresses the first gasket in a direction in which the external peripheral edge portion and the opening edge portion face each other, the fixing member compressing the first gasket via the external peripheral edge portion and the opening edge portion.
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