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公开(公告)号：US20230100270A1
公开(公告)日：2023-03-30
申请号：US17935445
申请日：2022-09-26
IPC分类号： H01M50/583 , H01M50/204 , H01M10/42 , H01M10/48 , H01M50/533
摘要： A first voltage detection device includes a first holding body, a first voltage detection portion held by the first holding body, and a first conductor attached to the first holding body, at least a portion of the conductor being functioning as a fuse.
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12.发明授权公开(公告)号：US11563207B2
公开(公告)日：2023-01-24
申请号：US16757173
申请日：2018-09-25
发明人： Dai Aya , Mayuko Koyama
IPC分类号： H01M4/04 , H01M4/1391 , H01M4/485 , H01M4/131
摘要： Provided is a current collector electrode sheet (10) including a slurry application area (11) formed by intermittently applying and drying a slurry containing an active material and a non-application area (12), on both surfaces of a metal foil (9), in which the application area (11) and the non-application area (12) are alternately formed in a winding direction of the metal foil (9) having a strip shape, and, in a compression step of continuously compressing the slurry application area (11) and the non-application area (12) using a pair of compression rollers in a thickness direction of the current collector electrode sheet (10), an area which is not compressed by the compression rollers, is present in a tailing portion (14) at a terminal end (13) of each application area (11).
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公开(公告)号：US11355783B2
公开(公告)日：2022-06-07
申请号：US15735791
申请日：2016-06-15
IPC分类号： G01R31/28 , H01M10/058 , H01M10/0566 , G01R31/385 , H01M10/42 , H01M4/04 , H01M10/0525 , G01R31/52
摘要： A method of manufacturing a lithium-ion secondary battery of the present invention includes at least four steps as follows: an initial charging step of charging the lithium-ion secondary battery, which has not been subjected to initial charging, under a temperature environment ranging of equal to or higher than −20° C. and equal to or lower than 15° C.; an aging step of leaving the lithium-ion secondary battery under a temperature environment ranging of equal to or higher than 30° C. and equal to or lower than 80° C. after the initial charging step; a short circuit detecting step of detecting the presence or absence of a short circuit of the lithium-ion secondary battery by measuring a voltage drop quantity of the lithium-ion secondary battery and comparing the voltage drop quantity with a reference value; and a sorting step of sorting out a lithium-ion secondary battery in which no short circuit is detected.
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公开(公告)号：US20220166023A1
公开(公告)日：2022-05-26
申请号：US17442490
申请日：2020-03-26
发明人： Moeko SATO , Takeshi SAITO , Shoichiro SHIRAISHI
摘要： Provided is a positive electrode for a lithium ion secondary battery including a metal foil (9) (current collector), a first mixture layer (11) which is provided on one surface thereof and contains a positive electrode active material, and a second mixture layer (12) which is partially covered by the mixture layer (11) and includes insulating particles as a main component, in which the mixture layer (12) is provided on one end (11a) side of the mixture layer (11) in a boundary portion between a formed area of the mixture layer (11) and a non-formed area of the mixture layer (11), one end (12a) of the mixture layer (12) is positioned between the one surface of the metal foil (9) and a lower surface of the mixture layer (11) in the formed area of the mixture layer (11) in the formed area of the first mixture layer (11), and the other end (12b) is positioned in the non-formed area, and binding agents contained in the mixture layer (12) and the mixture layer (11) are the same, and a proportion of the binding agent contained in the mixture layer (12) to a total amount of the mixture layer (12) is larger than a proportion of the binding agent contained in the mixture layer (11) to a total amount of the mixture layer (11).
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公开(公告)号：US11342640B2
公开(公告)日：2022-05-24
申请号：US16483591
申请日：2017-03-07
IPC分类号： H01M4/62 , H01M50/578 , H01M4/134 , H01M4/38 , H01M50/46
摘要： A secondary battery has a battery body and a restraint. The battery body has a plurality of stacked power generation elements. The restraint restrains the battery body. The restraint has a first contact section (for applying a restraining force to an outermost layer surface (e.g., a negative electrode collector) of the battery body. The restraint is configured so that a stress occurring at a boundary of a non-contact region and a contact region of the first contact section is less than a breaking strength of the negative electrode collector, and the stress is based on the restraining force and on expansion and contraction of a negative electrode due to a change in volume of a negative electrode active material layer caused by charging and discharging.
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公开(公告)号：US11329289B2
公开(公告)日：2022-05-10
申请号：US16083258
申请日：2017-03-03
发明人： Takashi Inoue
IPC分类号： H01M4/62 , C09K3/00 , H01M4/66 , H01M10/0525 , H01M4/133 , H01M4/1393
摘要： Thickener powder for a lithium-ion battery of the present invention is thickener powder that is used to thicken a water-based electrode slurry for a lithium-ion battery, the thickener powder includes a cellulose-based water-soluble polymer, and a content of a water-insoluble component in the thickener powder, which is calculated from Condition 1, is equal to or less than 1.0% by mass.
(Condition 1: The thickener powder is dissolved in water, thereby obtaining a thickener aqueous solution having a concentration of 1.3% by mass. Next, the thickener aqueous solution is filtered using a filter having an average pore diameter of 1 μm. Next, the water-insoluble component remaining on the filter is dried, and a mass of the water-insoluble component is measured. Next, the content of the water-insoluble component in the thickener powder is calculated.)-
公开(公告)号：US11043717B2
公开(公告)日：2021-06-22
申请号：US16308073
申请日：2016-06-08
IPC分类号： H01M4/131 , H01M4/505 , H01M4/525 , H01M10/0525 , H01M4/133 , B32B27/32 , H01M50/116 , H01M50/411 , H01M50/449 , H01M10/052 , H01M50/40 , H01M10/058 , H01M50/403 , H01M50/463 , H01M4/02 , H01M10/42
摘要： A non-aqueous electrolyte secondary battery with improved cycle durability includes a power generating element including a positive electrode obtained by forming a positive electrode active material layer containing a positive electrode active material on a surface of a positive electrode current collector, a negative electrode obtained by forming a negative electrode active material layer containing a negative electrode active material on a surface of a negative electrode current collector, and a separator, a ratio of a rated capacity to a pore volume of the separator being 1.55 Ah/cc or more, a ratio of a battery area to a rated capacity being 4.0 cm2/Ah or more, and a rated capacity being 30 Ah or more, wherein a variation in porosity in the separator is 4.0% or less.
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公开(公告)号：US20210005938A1
公开(公告)日：2021-01-07
申请号：US16975913
申请日：2019-03-20
发明人： Kazuomi Hayashi
IPC分类号： H01M10/42 , H01M10/48 , G01R31/371 , B60L3/00
摘要： A power supply device includes a plurality of battery packs, and a plurality of battery controllers having a master-slave configuration and corresponding to the plurality of battery packs in a one-to-one correspondence.
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公开(公告)号：US20200287198A1
公开(公告)日：2020-09-10
申请号：US16644716
申请日：2017-09-15
发明人： Koichi Takata
IPC分类号： H01M2/36
摘要： The present disclosure provides a liquid injection device for injection of electrolytic solution into a bag-shaped film exterior containing a generation element.
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公开(公告)号：US10658645B2
公开(公告)日：2020-05-19
申请号：US16046479
申请日：2018-07-26
申请人： AUTONETWORKS TECHNOLOGIES, LTD. , SUMITOMO WIRING SYSTEMS, LTD. , SUMITOMO ELECTRIC INDUSTRIES, LTD. , ENVISION AESC JAPAN LTD.
摘要： A busbar module includes a busbar holding plate and a busbar cover attached to the busbar holding plate. The busbar holding plate includes a busbar holding face and a bearing including a hole and a wall to define the hole. The busbar cover includes protrusions protruding toward each other in the axial direction at positions corresponding to the hole. The protrusions are opposed to each other with a gap less than a dimension of the hole in the axial direction. The protrusions are disposed in the hole to rotate the busbar cover about the protrusions between a covering position and an uncovering position. The busbar cover is flexible to deform such that the gap expands to allow the wall to pass through the gap during attachment of the bulbar cover to the busbar holding plate and restores its original shape when passing of the wall through the gap is complete.
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