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1.发明申请公开(公告)号：US20220320647A1
公开(公告)日：2022-10-06
申请号：US17699712
申请日：2022-03-21
发明人： Mizuho Matsumoto , Masashi Kato
IPC分类号： H01M50/184 , H01M10/04
摘要： A power storage cell comprises an electrode assembly that is composed of a first electrode sheet, a separator and a second electrode sheet stacked in layers, a collector plate that is disposed adjacent to the electrode assembly and has the first electrode sheet connected thereto, and a laminate film that seals the electrode assembly and the collector plate inside, wherein a portion of the laminate film that is located on a major surface of the collector plate has at least one exposure hole that exposes a portion of the collector plate.
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公开(公告)号：US11335942B2
公开(公告)日：2022-05-17
申请号：US15791596
申请日：2017-10-24
发明人： Mizuho Matsumoto
IPC分类号： H01M10/04 , B32B37/06 , H01M50/116 , H01M10/0585 , H01M10/0525 , H01M50/131 , H01M50/166 , H01M50/171
摘要： Provided is a method capable of producing, with excellent operability, a laminated electrode assembly which is stably restrained. The method for producing a laminated electrode assembly disclosed herein includes a step of preparing a laminate in which a plurality of positive electrode sheets and a plurality of negative electrode sheets are alternately laminated, and a separator is interposed between each positive electrode sheet and each negative electrode sheet; a step of enveloping, with a heat shrinkable film, four faces of the laminate including a pair of main faces perpendicular to a lamination direction of the laminate and facing each other, and a pair of end faces parallel to the lamination direction of the laminate and facing each other; and a step of heating the pair of end faces while sandwiching the pair of main faces with a cooling plate to thermally shrink the heat shrinkable film on the pair of end faces.
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公开(公告)号：US10686182B2
公开(公告)日：2020-06-16
申请号：US15795591
申请日：2017-10-27
发明人： Masashi Kato , Mizuho Matsumoto
IPC分类号： H01M10/058 , H01M4/13 , H01M10/04 , H01M10/052 , H01M2/16 , H01M2/26 , H01M10/0585 , H01M2/10 , H01M10/00
摘要： A secondary battery is provided, which includes a laminated electrode body and which has a current-collecting structure with favorable structural stability even when mounted to a vehicle and with superior high-rate charge-discharge characteristics. In a laminated electrode body included in a secondary battery provided by the present invention, a laminated positive electrode current collector-exposed portion and a laminated negative electrode current collector-exposed portion respectively constitute a plurality of current collector bundles which are bundled while being divided into two or more in a direction of lamination, each of the plurality of current collector bundles is individually and separately joined to the current collector portion on the same electrode side, and any of separators between positive and negative electrodes is enveloped in any of the plurality of current collector bundles on the side of the positive electrode current collector-exposed portion and/or any of the plurality of current collector bundles on the side of the negative electrode current collector-exposed portion.
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公开(公告)号：US10205188B2
公开(公告)日：2019-02-12
申请号：US14960810
申请日：2015-12-07
发明人： Mizuho Matsumoto , Masashi Kato
IPC分类号： H01M2/26 , H01M2/30 , H01M10/04 , H01M2/18 , H01M10/0585 , H01M10/0587
摘要： A manufacturing method for a secondary battery according to the invention includes an assembling step in which an insulating member having an insulating property is assembled to an electrode body, the insulating member having a first inclined portion and a second inclined portion provided so as to face each other in one end of the insulating member, as well as a gap provided between the first inclined portion and the second inclined portion. In the first inclined portion and the second inclined portion, inclined surfaces are formed on surfaces of the first inclined portion and the second inclined portion on sides facing each other, and are inclined in a direction in which the first inclined portion and the second inclined portion are separated from each other as the first inclined portion and the second inclined portion extend to tip sides.
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公开(公告)号：US20220320672A1
公开(公告)日：2022-10-06
申请号：US17707275
申请日：2022-03-29
发明人： Masashi KATO , Mizuho Matsumoto , Hiroyuki Nakayama , Daiki Maeda
IPC分类号： H01M50/291 , H01M50/211 , H01M50/242
摘要： A power storage device includes: a power storage module including power storage cells; an accommodation case; and a plate portion. Each of the power storage cells includes: an exterior body; and an electrode assembly and an electrolyte solution that are accommodated in the exterior body. The plate portion includes a fixed section and a corrugated plate portion. In a plan view of the plate portion as seen from a position away from the plate portion in the stacking direction, the corrugated plate portion is formed to deform so as to extend toward a central point of the electrode assembly when the corrugated plate portion receives pressing force applied in the stacking direction.
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公开(公告)号：US10535858B2
公开(公告)日：2020-01-14
申请号：US15956954
申请日：2018-04-19
发明人： Satomi Yamamoto , Mizuho Matsumoto , Yuki Yamasaki
IPC分类号： H01M2/26 , H01M10/0525 , H01M10/0585 , H01M2/30
摘要： A secondary battery employs a stacked electrode assembly. A current collector terminal includes a base plate portion and a current collector plate portion being continuous with the base plate portion and extending along a direction orthogonal to the base plate portion. The current collector plate portion includes a plurality of slits extending from a tip end of the current collector plate portion along a direction orthogonal to the base plate portion. A cut-out is formed in at least one of an edge of the plurality of slits and an edge of the current collector plate portion extending along a direction orthogonal to the base plate portion.
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公开(公告)号：US10312493B2
公开(公告)日：2019-06-04
申请号：US15700762
申请日：2017-09-11
发明人： Mizuho Matsumoto
摘要： The battery according to the present invention includes electrodes provided with current collecting tabs 26 and 36, an electrode body 10 constituted by repeatedly laminating the electrodes in the direction of lamination, and tab groups 28 and 38 obtained by overlaying repeatedly laminated electrode tabs 26 in the direction of lamination. First tabs 26 and 36 included in the tab groups 28 and 38 have extending parts 26a and 36a which extend from an active material layer, and crossing parts 26b and 36b which extend in a direction perpendicular to, or intersecting at an acute angle with, the direction of extension A of the extending parts 26a and 36a. The crossing parts 26b and 36b are gathered together in the direction of lamination, and current collector terminals 70 and 72 are joined to the positions at which the crossing parts are gathered together.
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公开(公告)号：US10062875B2
公开(公告)日：2018-08-28
申请号：US14925445
申请日：2015-10-28
发明人： Masashi Kato , Mizuho Matsumoto
IPC分类号： H01M2/02 , H01M2/08 , H01M10/04 , H01M10/05 , H01M10/052 , H01M10/0585
CPC分类号： H01M2/08 , H01M2/024 , H01M10/0413 , H01M10/0468 , H01M10/049 , H01M10/052 , H01M10/0585
摘要： In a fixing process, a fixing tape is wound around a first side surface of an electrode body and a second side surface which is a rear surface of the first side surface across a first end surface and a second end surface positioned at both ends of the electrode body in a stacking direction of the electrode body, from an outside of the stacked electrode body. In a stacking process before the fixing process, the electrode body is formed, and at least at a corner in the first and second side surfaces of the electrode body on a downstream side of a direction in which the fixing tape is wound, a protection member which protects the corner is disposed.
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公开(公告)号：US10483512B2
公开(公告)日：2019-11-19
申请号：US15847223
申请日：2017-12-19
摘要： 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.
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公开(公告)号：US10381677B2
公开(公告)日：2019-08-13
申请号：US15016819
申请日：2016-02-05
发明人： Masashi Kato , Mizuho Matsumoto
摘要： A secondary battery includes a rolled electrode body, a case main body that has a shape of an open cylinder with a bottom; a case cover, a first electrode terminal, and a second electrode terminal. The first electrode terminal and the second electrode terminal support the rolled electrode body. The first electrode terminal is fixed to the case cover, with one end being exposed to the outside of the case main body, and the other end being connected to a first collector portion. The second electrode terminal is fixed, together with the negative-electrode electrode terminal, to the case cover, with one end being exposed to the outside of the case main body, and the other end being connected to a second collector portion.
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