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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
发明人： KOTA SHIMIZU , TAKAAKI KASSAI , KAZUMICHI SHIMIZU , TAKESHI NAGAO
IPC分类号： H01M50/191 , H01M50/107 , H01M50/119 , H01M50/169 , H01M50/184 , H01M50/186
CPC分类号： H01M50/191 , H01M50/107 , H01M50/119 , H01M50/169 , H01M50/184 , H01M50/186
摘要： 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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公开(公告)号：US20230060460A1
公开(公告)日：2023-03-02
申请号：US17760110
申请日：2021-02-19
IPC分类号： H01M50/183 , H01M50/107 , H01M50/533 , H01M50/152 , H01M10/04 , H01M50/543
摘要： 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：US20220131240A1
公开(公告)日：2022-04-28
申请号：US17438514
申请日：2020-03-17
发明人： KAZUMICHI SHIMIZU
IPC分类号： H01M50/536 , H01M50/107
摘要： A method for manufacturing a battery, includes: preparing a case having an opening at one end portion of the case and a bottom portion at another end portion of the case; preparing an electrode group including a first electrode, a second electrode, and a current collecting lead electrically connected to the first electrode; housing the electrode group in the case; and joining the current collecting lead to an inner surface of the case. The joining of the current collecting lead includes: pressing a pressing device having a tubular shape against the current collecting lead to cause the current collecting lead to contact the inner surface of the case; and welding the current collecting lead to the case while an inside of a tube of the pressing device is sucked by a suction device.
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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
IPC分类号： H01M50/186 , H01M50/107 , H01M50/184 , H01M50/152
摘要： 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：US20200176750A1
公开(公告)日：2020-06-04
申请号：US16656121
申请日：2019-10-17
发明人： KOJI FUNAMI , IZURU NAKAI , KAZUMICHI SHIMIZU , HIROSHI TAKASAKI
摘要： A cylindrical battery having improved strength against rotational torque includes: an electrode unit configured as a roll of a first electrode plate and a second electrode plate with a separator in between, the first electrode plate being an electrode plate to which one end of a first electrode tab and one end of a second electrode tab are connected, the second electrode plate having opposite polarity from the first electrode plate; a case housing the electrode unit; and a sealing member sealing an opening rim of the case. The first electrode tab and the second electrode tab are disposed to project out from the first electrode plate at opposite ends of a winding axis of the first electrode late. The first electrode tab is in contact with a bottom portion of the case by being welded thereto. The second electrode tab is welded at the opening rim side opposite the bottom portion of the case.
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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
IPC分类号： H01M50/183 , H01M50/107 , H01M50/533 , H01M10/04 , H01M50/152
摘要： 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：US20240283114A1
公开(公告)日：2024-08-22
申请号：US18681139
申请日：2022-09-21
IPC分类号： H01M50/578 , H01G11/80 , H01M50/107 , H01M50/152 , H01M50/184
CPC分类号： H01M50/578 , H01G11/80 , H01M50/107 , H01M50/152 , H01M50/184 , H01M2200/20
摘要： 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
发明人： KAZUMICHI SHIMIZU , TAKESHI NAGAO , SHINYA GESHI
IPC分类号： H01M50/184 , H01M50/152 , H01M50/19 , H01M50/169
CPC分类号： H01M50/184 , H01M50/152 , H01M50/19 , H01M50/169 , H01M10/0587
摘要： 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：US20220149466A1
公开(公告)日：2022-05-12
申请号：US17498300
申请日：2021-10-11
发明人： KOTA SHIMIZU , TAKAAKI KASSAI , KAZUMICHI SHIMIZU , SHINYA GESHI
IPC分类号： H01M50/186 , H01M50/60
摘要： A battery includes a metal battery can that has a tubular portion having an opening edge portion at one end of the tubular portion and a bottom portion closing the other end of the tubular portion; an electrode body that is accommodated in the battery can; an electrolytic solution that fills the battery can; and a sealing member that has an outer peripheral surface disposed to face an inner peripheral surface of the opening edge portion of the tubular portion and seals the opening edge portion, in which a part of the inner peripheral surface of the opening edge portion and a part of the outer peripheral surface of the sealing member are joined by a melting portion, and a preventing portion, which prevents the electrolytic solution from rising toward a position, in which the melting portion is formed, between the inner peripheral surface of the opening edge portion and the outer peripheral surface of the sealing member, is provided on the outer peripheral surface of the sealing member, the preventing portion being closer to the bottom portion than the melting portion is.
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公开(公告)号：US20210394305A1
公开(公告)日：2021-12-23
申请号：US17331972
申请日：2021-05-27
发明人： KOJI FUNAMI , KAZUKI FUJIWARA , KOTA SHIMIZU , KAZUMICHI SHIMIZU
IPC分类号： B23K26/082 , B23K26/28 , B23K26/06 , B23K26/70 , B23K31/12
摘要： The present disclosure includes a laser welding method in which a joint surface between a plurality of workpiece members is welded by radiating laser beam LB, and a locus of laser beam LB is controlled so as to perform wobbling scanning Sw by a combination of scanning motion Sa moving along first direction x parallel to the joint surface and swing motion Sb including first swing component Bx along first direction x and second swing component By along second direction y perpendicular to first direction x, the method including a defect determination step of determining occurrence of a welding defect; and an output control step of increasing or decreasing an output of laser beam LB when laser beam LB is radiated again toward the welding defect in a case where the welding defect occurs.
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