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公开(公告)号：US20240234954A9
公开(公告)日：2024-07-11
申请号：US18382473
申请日：2023-10-20
申请人： PRIMEARTH EV ENERGY CO., LTD. , TOYOTA JIDOSHA KABUSHIKI KAISHA , PRIME PLANET ENERGY & SOLUTIONS, INC.
发明人： Ryotaro SAKAI
CPC分类号： H01M50/46 , H01M10/0431
摘要： An electrode body includes a stack of a negative electrode plate, a positive electrode plate, and a separator in which the separator is arranged between the negative electrode plate and the positive electrode plate. The positive electrode plate has a positive electrode density of 3.0 g/cm3 or less. The negative electrode plate has a negative electrode density of 1.3 g/cm3 or less. A ratio of a specific surface area of the positive electrode plate to a specific surface area of the negative electrode plate is 0.7 or greater.
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2.发明公开公开(公告)号：US20240213517A1
公开(公告)日：2024-06-27
申请号：US18393337
申请日：2023-12-21
申请人： PRIMEARTH EV ENERGY CO., LTD. , TOYOTA JIDOSHA KABUSHIKI KAISHA , PRIME PLANET ENERGY & SOLUTIONS, INC.
发明人： Shunya MARUYAMA
IPC分类号： H01M10/04
CPC分类号： H01M10/045 , H01M10/0459 , H01M10/0468
摘要： A non-aqueous rechargeable battery includes an electrode body formed by rolling a stack of positive and negative electrode plates with a separator that holds a non-aqueous electrolyte solution disposed in between. The electrode body includes a curved portion in which layers of the electrode body are curved. The positive electrode plate includes a foil of a positive electrode substrate and a positive electrode mixture layer applied to the positive electrode substrate. The negative electrode plate includes a foil of a negative electrode substrate and a negative electrode mixture layer applied to the negative electrode substrate. The negative electrode mixture layer includes a negative electrode active material that intercalates a charge carrier during charging. A coefficient of static friction between the negative electrode mixture layer and the separator is 0.60 or greater. A coefficient of static friction between the positive electrode mixture layer and the separator is 0.50 or less.
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公开(公告)号：US12002942B2
公开(公告)日：2024-06-04
申请号：US18072560
申请日：2022-11-30
申请人： PRIMEARTH EV ENERGY CO., LTD. , TOYOTA JIDOSHA KABUSHIKI KAISHA , PRIME PLANET ENERGY & SOLUTIONS, INC.
发明人： Masakazu Umehara , Naomichi Ishikawa , Naoto Ooshiro , Yuuki Kudou , Hideki Hayashi , Hiroki Yamada , Naoya Kishimoto
CPC分类号： H01M4/0435 , H01M4/134 , H01M4/366 , H01M4/463 , H01M4/622 , H01M4/661 , H01M10/0525 , H01M2004/021 , H01M2220/20
摘要： A method for manufacturing a rechargeable battery includes forming a mixture layer and an insulating layer on an electrode substrate having an edge extending in a specified direction so that an exposed portion where the electrode substrate is exposed extends between the edge and the insulating layer; pressing the mixture layer; and stretching an extension portion, located between the edge and the mixture layer, and the insulating layer in the specified direction. The stretching includes applying a stress greater than or equal to yield stress of the electrode substrate or greater than or equal to 0.2% proof stress of the electrode substrate and less than tensile strength of the electrode substrate to the extension portion, and applying a stress greater than or equal to yield stress of the insulating layer or greater than or equal to 0.2% proof stress of the insulating layer to the insulating layer.
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公开(公告)号：US20240170776A1
公开(公告)日：2024-05-23
申请号：US18475211
申请日：2023-09-27
申请人： Prime Planet Energy & Solutions, Inc. , TOYOTA JIDOSHA KABUSHIKI KAISHA , PRIMEARTH EV ENERGY CO., LTD.
发明人： Tsuyoshi EHARA , Yozo UCHIDA , Yuki SATO , Syoichi TSUCHIYA , Masataka ASAI , Tsuyoshi ASANO , Masahiro UCHIMURA , Takashi TAKIMOTO , Shigeru MATSUMOTO , Yasuaki NAGANO
IPC分类号： H01M50/188 , H01M50/103 , H01M50/176 , H01M50/193
CPC分类号： H01M50/188 , H01M50/103 , H01M50/176 , H01M50/193 , H01G11/82
摘要： A method for producing a power storage device includes an insert-molding step in which a resin member is formed by insert molding with a terminal member inserted in an insertion hole of a case member. This insert-molding step is performed using a molding mold that includes a top-surface contact portion which is to face and tightly contact with a terminal top surface of the terminal member, an inner annular flat portion and an outer annular flat portion to form a frame top surface of the resin member, and an annular protruding portion to form an annular groove of the resin member.
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公开(公告)号：US20240170745A1
公开(公告)日：2024-05-23
申请号：US18512922
申请日：2023-11-17
发明人： Erika YAMAMOTO
IPC分类号： H01M10/48 , G01R31/367 , G01R31/3842 , H01M10/0525
CPC分类号： H01M10/482 , G01R31/367 , G01R31/3842 , H01M10/0525 , H01M10/486 , H01M2220/20
摘要： A state determination device for a lithium-ion rechargeable battery includes a storage device and an execution device. The storage device stores deposition determination mapping data for defining a deposition determination mapping that uses a difference variable as an input variable and outputs information on whether lithium is deposited on a negative electrode of the lithium-ion rechargeable battery. The difference variable indicate information on a difference between a surface concentration of the negative electrode active material and an average concentration of the negative electrode active material in the lithium-ion rechargeable battery. The execution device is configured to execute a determination acquisition process for acquiring a value of the input variable of the deposition determination mapping, and a determination process for determining deposition of lithium by inputting the value of the input variable of the deposition determination mapping to the deposition determination mapping.
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公开(公告)号：US20240128612A1
公开(公告)日：2024-04-18
申请号：US18461512
申请日：2023-09-06
申请人： Prime Planet Energy & Solutions, Inc. , TOYOTA JIDOSHA KABUSHIKI KAISHA , PRIMEARTH EV ENERGY CO., LTD.
发明人： Hiroaki KAWASE
IPC分类号： H01M50/566 , H01M10/0587 , H01M50/46 , H01M50/463
CPC分类号： H01M50/566 , H01M10/0587 , H01M50/46 , H01M50/463
摘要： A power storage device includes a flat wound electrode body, a case, and a positive terminal ultrasonically welded to a positive current collecting part of the electrode body. A surface-welded portion of a welded portion formed on a laminated current collecting part of the positive current collecting part has an outer periphery including an inner side, an outer side, a closer side and a far side. An outside close endpoint of the outer side is positioned on one side toward a reference position in an electrode widthwise direction with respect to an inside close endpoint of the inner side, and the closer side forms a straight line or a line passing through a region farther from the reference position than the straight line.
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公开(公告)号：US20240128611A1
公开(公告)日：2024-04-18
申请号：US18461509
申请日：2023-09-06
申请人： Prime Planet Energy & Solutions, Inc. , TOYOTA JIDOSHA KABUSHIKI KAISHA , PRIMEARTH EV ENERGY CO., LTD.
发明人： Hiroaki KAWASE
IPC分类号： H01M50/566 , H01M10/04
CPC分类号： H01M50/566 , H01M10/0431 , H01M50/103
摘要： A power storage device includes a flat wound electrode body, a case, and a positive terminal ultrasonically welded to a positive current collecting part of the electrode body. A surface-welded portion of a welded portion formed on a laminated current collecting part of the positive current collecting part has an outer periphery of a rectangular shape and corresponds to a virtual surface-welded portion configured such that the virtual surface-welded portion is rotated by 45 degrees or less in a rotation direction in which a closest virtual corner is moved away from an electrode body main part. A distance from a reference position to a closest corner is longer than a virtual distance from the reference position to the closest virtual corner.
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公开(公告)号：US20240103095A1
公开(公告)日：2024-03-28
申请号：US18453325
申请日：2023-08-22
申请人： Prime Planet Energy & Solutions, Inc. , TOYOTA JIDOSHA KABUSHIKI KAISHA , PRIMEARTH EV ENERGY CO., LTD.
发明人： Hiroaki IKEDA , Toshiki YONEYAMA
摘要： A method for inspecting a battery for short circuit includes: adjusting batteries, which have been subjected to initial charging and subsequent charging and discharging, to a first device voltage; measuring a pre-leaving voltage; leaving the batteries for a leaving period with terminals in an open state; measuring a post-leaving device voltage; actually measuring an actual measured voltage drop rate; determining whether or not each voltage is short-circuited; and, prior to the determining, estimating an estimating voltage drop rate according to an elapsed time and a leaving period. In the determining, it is determined whether or not each battery is short-circuited using the actual voltage drop rate and the estimated voltage drop rate.
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公开(公告)号：US20240088529A1
公开(公告)日：2024-03-14
申请号：US18244669
申请日：2023-09-11
发明人： Shigeki SAITO
IPC分类号： H01M50/536 , B23K20/10
CPC分类号： H01M50/536 , B23K20/10
摘要： A method for bonding a current collector to an electrode body is provided. The electrode body includes electrode plate end portions arranged over each other in a thickness direction. The method includes forming a covering by integrally covering the electrode plate end portions with resin at a bonding position of the current collector, and bonding a bonding portion of the current collector, by performing solid-phase bonding, to edges of the electrode plate end portions integrated by the formed covering.
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公开(公告)号：US11909249B2
公开(公告)日：2024-02-20
申请号：US17455382
申请日：2021-11-17
发明人： Daisuke Koba , Yuji Torii , Yuji Sakayanagi , Yasushi Matsukawa
CPC分类号： H02J7/14 , B60K16/00 , B60L8/003 , H02J1/00 , H02J7/0031 , H02S10/20 , B60K2016/003
摘要： A power feeding system of the present disclosure includes a control unit. In a case where a magnitude of supply destination power is smaller than an upper limit value of the power supply capability of the power source, the control unit controls the charge/discharge control circuit so as to meet the supply destination power based on power output from the power source, and to charge the storage battery with power which is a difference obtained by subtracting the supply destination power from the upper limit value of the power supply capability of the power source. In a case where the magnitude of the supply destination power is more than or equal to the upper limit value of the power supply capability of the power source, the control unit controls the charge/discharge control circuit so as to meet the supply destination power by both the power source and the storage battery.
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