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公开(公告)号：US20210359344A1
公开(公告)日：2021-11-18
申请号：US17282148
申请日：2019-10-01
发明人： Ryota FURUYA , Tomitaro HARA
IPC分类号： H01M10/0568 , H01M10/0525 , H01M10/0569 , H01M4/04
摘要： A method of the present invention for manufacturing a lithium-ion cell comprises the step of impregnating a porous positive-electrode active material layer or a porous negative-electrode active material layer with an ionic liquid electrolyte. The ionic liquid electrolyte includes: an ionic liquid comprising an anion and a cation; and a lithium salt dissolved in the ionic liquid. The anion is bis(fluorosulfonyl)imide ion. The lithium salt is lithium bis(fluorosulfonyl)imide or lithium bis(trifluoromethansulfonyl)imide. The ionic liquid electrolyte contains the lithium salt at a concentration of 1.6 mol/L to 3.2 mol/L inclusive. The step of impregnation with the ionic liquid electrolyte is the step of impregnating the positive-electrode active material layer or the negative-electrode active material layer with the ionic liquid electrolyte at a temperature of 50° C. to 100° C. inclusive.
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公开(公告)号：US20200176757A1
公开(公告)日：2020-06-04
申请号：US16487307
申请日：2018-02-22
IPC分类号： H01M4/36 , H01M4/583 , H01M10/0525 , H01M4/38 , H01M4/02
摘要： A non-aqueous electrolyte secondary battery of the present invention includes: a positive electrode in which an olivine-type compound is used as a positive electrode active material; a negative electrode in which amorphous-based carbon is used as a negative electrode active material; a separator sandwiched between the positive electrode and the negative electrode; a non-aqueous electrolyte; and a casing which houses the positive electrode, the negative electrode, the separator, and the non-aqueous electrolyte. The positive electrode, the negative electrode, and the non-aqueous electrolyte are configured to satisfy an inequality: (Rn/(Rp+Rn))≤0.54, where Rp is a positive electrode internal resistance attributed to both the positive electrode and a positive electrode reaction during charging of the secondary battery, Rn is a negative electrode internal resistance attributed to both the negative electrode and a negative electrode reaction during charging of the secondary battery, and (Rp+Rn) is an inter-terminal internal resistance of the secondary battery during charging of the secondary battery.
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3.发明申请公开(公告)号：US20190181424A1
公开(公告)日：2019-06-13
申请号：US16301004
申请日：2016-05-12
发明人： Tomitaro HARA , Yusuke KUZUSHIMA
IPC分类号： H01M4/133 , H01M10/0525 , H01M4/583 , H01M4/66 , H01M4/131 , H01M10/0569
摘要： The present invention provides a positive electrode for non-aqueous electrolyte secondary battery, having novel overcharge protection functions. The present invention provides a positive electrode for non-aqueous electrolyte secondary battery, comprising a carbon layer and a positive-electrode active material layer provided on the carbon layer, wherein the carbon layer includes graphitizable carbon.
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公开(公告)号：US09935344B2
公开(公告)日：2018-04-03
申请号：US14388495
申请日：2013-03-22
发明人： Keisuke Sawanishi , Tomitaro Hara
IPC分类号： H01M10/48 , H01M10/0525 , H01M10/42 , H01M10/0566
CPC分类号： H01M10/48 , H01M10/0525 , H01M10/0566 , H01M10/4285
摘要： The present invention provides a test battery case which is capable of conducting an internal short-circuit test with accuracy. The test battery case according to the present invention includes a container for housing a power generating element, and a closing member detachably secured to the container, wherein the container has an opening for the internal short-circuit test, the opening being closed by the closing member.
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公开(公告)号：US09917461B2
公开(公告)日：2018-03-13
申请号：US15037531
申请日：2014-11-18
发明人： Syunsuke Shiobara
CPC分类号： H02J7/0068 , H02J7/0021 , H02J7/0029 , H02J13/0075 , H02J2007/0039
摘要： Techniques effectively prevent an overcurrent from occurring in a system comprising assembled batteries connected in parallel to a power supply line, when a given assembled battery is connected to the power supply line. Multiple battery units are each configured such that they can be connected to a power supply line. Each battery unit includes a battery cell group configured including multiple battery cells, a switching unit arranged between the power supply line and the battery cell group so as to control a current that flows between the power supply line and the battery cell group, and a control unit that controls the switching unit.
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公开(公告)号：US20150207169A1
公开(公告)日：2015-07-23
申请号：US14529877
申请日：2014-10-31
发明人： Takuya SAKATA , Ayumi YOSHIDA , Hiroshi SATO
IPC分类号： H01M10/04
CPC分类号： H01M10/0409 , B32B38/1808 , B32B2457/10 , H01M2/18 , H01M10/0431 , H01M10/0459 , H01M10/049 , Y02E60/12 , Y10T29/49108 , Y10T29/53139 , Y10T156/1051
摘要： In a method of manufacturing an electrode assembly for a rectangular battery, in which positive electrodes and negative electrodes are alternately laminated so that a separator exists between the respective positive and negative electrodes, the manufacturing method includes the steps of: arranging a plurality of guide members in zigzag form in a perpendicular direction; inserting a continuous member of the separator between one and another one rows of the guide members; folding, into zigzag form, the continuous member by intersecting the rows of the guide members in a horizontal direction; inserting alternately the positive electrodes and the negative electrodes in respective valley grooves of the zigzag-folded continuous member; withdrawing the guide members from the respective valley grooves of the continuous member; and pressing, thereafter, the continuous member in the zigzag direction so as to make flat the continuous member.
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公开(公告)号：US12000365B2
公开(公告)日：2024-06-04
申请号：US16493031
申请日：2018-02-22
IPC分类号： F02N11/08 , H01M50/103 , H01M50/124 , H01M50/176 , H01M50/188 , H01M50/209 , H01M50/50 , H01M50/531 , H01M50/553
CPC分类号： F02N11/0862 , H01M50/103 , H01M50/124 , H01M50/176 , H01M50/188 , H01M50/209 , H01M50/50 , H01M50/531 , H01M50/553 , H01M2220/20
摘要： A sealed battery according to the present invention includes an electrode assembly including a positive electrode, a negative electrode, and a separator; an electrolyte; a case; a first lead terminal; and a second lead terminal, wherein each of the first and second lead terminals includes an electrode connection section, an external connection section, and a sealing section, the first or the second lead terminal includes a conduction section, the conduction section is provided to be at least partially in contact with an outer surface of the case directly or indirectly, the case has a conductivity or an apparent thermal conductivity of from 10 W/(m·K) to 250 W/(m·K) inclusive, and the electrode assembly and the electrolyte contained in the case have an effective thermal conductivity of from 10 W/(m·K) to 100 W/(m·K) inclusive in a steady state.
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公开(公告)号：US20180375068A1
公开(公告)日：2018-12-27
申请号：US16064005
申请日：2015-12-28
发明人： Tomoya MAKABE , Takeshi YANAGISAWA , Hiroyuki SUZUKI , Masaharu NAKAMORI , Hideyuki SUGIYAMA , Hiroshi SATO , Takeshi SAWADA , Kazutoshi MIYAUCHI
摘要： The present invention provides a power storage device capable of preventing deterioration of sealability even when a pulling force is applied to a casing and having high safety and excellent durability. The power storage device of the present invention includes a casing having a sealing structure, the casing includes a first member including a first opening and a second member, the first and second members are joined to each other at a first joint portion provided at a peripheral edge of the first opening, the first joint portion includes a first peripheral groove portion and a first reception port provided at one of the first and second members, a first convex edge portion provided at the other thereof, a first claw portion provided on a side surface of the first convex edge portion, and a first adhesive layer, a front end of the first convex edge portion is disposed inside the first peripheral groove portion and is bonded to an inner wall of the first peripheral groove portion by the first adhesive layer, the first claw portion is disposed inside the first reception port, and the first adhesive layer bonds the front end of the first convex edge portion to the inner wall of the first peripheral groove portion in a state where a side surface of the first claw portion opposite to the front end of the first convex edge portion is in contact with an inner wall of the first reception port opposite to a bottom of the first peripheral groove portion.
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公开(公告)号：US10147977B2
公开(公告)日：2018-12-04
申请号：US14652041
申请日：2012-12-13
发明人： Takao Fukunaga , Tomitaro Hara , Yusuke Kazushima
IPC分类号： H01M2/26 , H01M10/056 , H01M10/058 , H01M10/42 , H01M10/44 , H01M4/133 , H01M10/0567 , H01M10/0525
摘要： The present invention provides a non-aqueous electrolyte secondary battery that can suppress a drop in a flash point of an electrolyte solution even if the non-aqueous electrolyte secondary battery is used for a long time. The non-aqueous electrolyte secondary battery includes: an electrode body having a structure in which a positive electrode including a positive-electrode active material and a negative electrode including a negative-electrode active material are stacked with a separator interposed therebetween; a non-aqueous electrolyte solution containing a flame retardant; and an outer casing accommodating the electrode body and the non-aqueous electrolyte solution. The non-aqueous electrolyte solution in the electrode body has a flame retardant concentration lower than a flame retardant concentration in the non-aqueous electrolyte solution between the electrode body and the outer casing.
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公开(公告)号：US09991503B2
公开(公告)日：2018-06-05
申请号：US14652068
申请日：2013-12-11
发明人： Takao Fukunaga , Tomitaro Hara , Yusuke Kazushima
IPC分类号： H01M4/82 , H01M2/36 , H01M10/44 , H01M10/0567 , H01M10/0583 , H01M10/0587 , H01M4/04 , H01M10/052
CPC分类号： H01M2/36 , H01M4/0447 , H01M10/052 , H01M10/0567 , H01M10/0583 , H01M10/0587 , H01M10/446 , Y10T29/49112
摘要： A method for producing a non-aqueous electrolyte secondary battery according to the present invention is characterized in that the method comprises the steps of: placing an electrode body into an outer casing, the electrode body having a folded-separator structure or a wound structure in which a positive electrode including a positive-electrode active material and a negative electrode including a negative-electrode active material are stacked with a separator interposed therebetween; placing a non-aqueous electrolyte free of a flame retardant into the outer casing; charging the electrode body by applying a voltage between the positive electrode and the negative electrode placed in the outer casing; placing a flame retardant into the outer casing; and sealing the outer casing, wherein the step of charging is a step of charging the electrode body with the state in which the surface of the positive-electrode active material and the surface of the negative-electrode active material are in contact with the non-aqueous electrolyte substantially free of the flame retardant.
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