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公开(公告)号：US11038228B2
公开(公告)日：2021-06-15
申请号：US16318865
申请日：2017-07-24
发明人： Naoyuki Iwata
IPC分类号： H01M50/124 , H01M10/04 , H01M50/116 , H01M50/172 , H01M50/183 , H01M50/543
摘要： An electrochemical device comprising an electrode assembly in which two types of electrodes are stacked or wound with separators interposed therebetween and an outer container that accommodates the electrode assembly; wherein electrode terminals extend to the outside from within the outer container. The films which cover the electrode assembly overlap each other on the outside of the outer peripheral portion of the electrode assembly, and the outer container is formed by bonding the films to each other. The portion of the films that overlap and are bonded to each other comprises a first sealed portion in which the films overlap and are bonded to each other in an overlapping state with the electrode terminals interposed therebetween, and comprises a second sealed portion in which the films are bonded to each other in a directly overlapping state without interposition of the electrode terminals.
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公开(公告)号：US11024855B2
公开(公告)日：2021-06-01
申请号：US14893990
申请日：2014-07-01
发明人： Tomoyuki Ohta
IPC分类号： H01M4/66 , H01M2/26 , H01M4/13 , H01M10/0525 , H01M4/131 , H01M4/04 , H01M4/1391
摘要： An electrode (1) for use in a nonaqueous electrolyte secondary cell includes: a current-collecting foil (10); an electrode mixture layer (2) that is formed on a portion of the current-collecting foil (10); and an oxide film (6) provided on the current-collecting foil (10) in at least a region that extends from the boundary (5) between a forming section (3) and a non-forming section (4) of the electrode mixture layer (2) and over a portion of the non-forming section (4).
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公开(公告)号：US10901046B2
公开(公告)日：2021-01-26
申请号：US16317103
申请日：2017-06-07
发明人： Mayuko Kishi
IPC分类号： H02J7/04 , G01R31/396 , H01M10/48 , G01R31/36 , H01M10/42 , H02J7/00 , G01R31/3835
摘要： An information processing apparatus (2000) detects a battery cell in which an abnormality (for example, leakage) occurs among a plurality of battery cells connected in series. A first differential voltage acquisition unit (2020) acquires a first differential voltage for each of the plurality of battery cells. The first differential voltage of the battery cell is a difference between a voltage of the battery cell after charging is completed and a voltage of the battery cell at a time when an operation is performed for a predetermined time after charging is completed. A determination unit (2040) determining that an abnormality occurs in a first battery cell, in a case where a difference between the first differential voltage of the first battery cell and the first differential voltage of a battery cell having a next largest first differential voltage of the first battery cell, is greater than or equal to a first predetermined value.
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公开(公告)号：US20190074509A1
公开(公告)日：2019-03-07
申请号：US16083783
申请日：2016-12-26
发明人： Masanori HIRAI , Kenji SATO
摘要： In electrode (2) for an electrochemical device comprising current collector (9) and active material layer (10) made up from active material coated on current collector (9), active material layer (10) comprises lower active material layer (10a) which adheres to current collector (9) and upper active material layer (10b) formed on lower active material layer (10a). Lower active material layer (10a) is thinner than upper active material layer (10b). The termination portion of upper active material layer (10b) in the longitudinal direction of current collector (9) either coincides with the termination portion of lower active material layer (10a) or is positioned nearer side from the starting portion than the termination portion of lower active material layer (10a).
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公开(公告)号：US10217988B2
公开(公告)日：2019-02-26
申请号：US15543597
申请日：2016-01-26
IPC分类号： H01M4/02 , H01M2/34 , H01M4/13 , H01M10/04 , H01M10/0585
摘要： Provided is a secondary battery with a high electric characteristic and reliability that prevents the short circuit between a positive electrode and a negative electrode by an insulating member and that prevents or reduces the volume increase and deformation of a battery electrode assembly. A secondary battery includes a battery electrode assembly in which positive electrode 1 and negative electrode 6 are alternately laminated while separator 20 is interposed therebetween. Positive electrode 1 and negative electrode 6 include current collectors 3, 8 and active materials 2, 7, each surface of current collectors 3, 8 is provided with an application portion and a non-application portion of active materials 2, 8, and the active materials 2, 7 include a thin portion whose thickness is small. A charging capacity ratio A/C between negative electrode 6 and positive electrode 1 that face each other at an outer edge portion containing the thin portion is greater than the charging capacity ratio A/C between negative electrode 6 and positive electrode 1 that face each other at a center side with respect to the outer edge portion.
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公开(公告)号：US10193184B2
公开(公告)日：2019-01-29
申请号：US15506573
申请日：2015-09-04
发明人： Tomoyuki Ohta , Ryota Yanagisawa , Takayuki Suzuki
IPC分类号： H01M10/0525 , H01M10/0566 , H01M10/058 , H01M2/02 , H01M4/04 , H01M10/42 , H01M2/36 , H01M4/02
摘要： A method for manufacturing a lithium ion secondary battery, the lithium ion secondary battery including a positive electrode and a negative electrode disposed with a separator sandwiched therebetween and contained together with an electrolytic solution in an outer case including a flexible film, wherein the quantity of dissolved nitrogen in the electrolytic solution in injecting the electrolytic solution into the outer case is 100 μg/mL or less.
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公开(公告)号：US20180315982A1
公开(公告)日：2018-11-01
申请号：US15771309
申请日：2016-11-02
摘要： An electrochemical device includes a storage element in which two types of electrodes are superposed on each other with a separator interposed therebetween and an outer container made of a flexible film that houses the storage element and an electrolyte solution, the two types of electrodes each including an active material-applied portion where an active material layer is formed on current collector 9, and an active material-non-applied portion, wherein each of the two types of electrodes is provided with an electrode terminal 7 and support tab 13, one end portion of electrode terminal 7 being superposed on the active material-non-applied portion of the electrode in the outer container, the other end portion of electrode terminal 7 extending to an outside of the outer container, support tab 13 sandwiching the active material-non-applied portion along with the one end portion of electrode terminal 7 in the outer container, and the active material-non-applied portion, electrode terminal 7, and support tab 13 are joined at a position where they are superposed on one another. Support tab 13 has a planar shape without any corner portion of 90 degrees or less.
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公开(公告)号：US20180294514A1
公开(公告)日：2018-10-11
申请号：US15767537
申请日：2016-10-28
发明人： Yoshimasa YAMAMOTO
IPC分类号： H01M10/0525 , H01M10/0569 , H01M4/583 , H01M4/62 , H01M4/525 , H01M4/505 , H01M4/66 , H01M2/16 , H01M10/058 , H01M4/36
摘要： There is provided a lithium ion secondary battery comprising a positive electrode containing, as a positive electrode active material, a lithium nickel composite oxide having a layered rock salt structure, a negative electrode containing a negative electrode active material capable of occluding and releasing lithium ions, an electrolyte, and an outer package, wherein the lithium nickel composite oxide is represented by the composition formula LiNixM1-xO2 (x represents a numerical value of 0.75 to 1, and M represents at least one metal element occupying nickel sites other than Ni), and has a crystal phase having, in a full charge state, an interplanar spacing d(003) larger than an interplanar spacing d(003) in a complete discharge state.
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9.发明申请公开(公告)号：US20180233772A1
公开(公告)日：2018-08-16
申请号：US15751228
申请日：2016-09-14
发明人： Hideaki SASAKI , Shinako KANEKO , Kenji WATANABE
IPC分类号： H01M10/0525 , H01M10/0567 , H01M10/0569 , H01M10/058 , H01M10/48 , H01M4/525 , H01M4/66
CPC分类号： H01M10/0525 , G01R31/389 , G01R31/392 , H01M4/525 , H01M4/662 , H01M10/0567 , H01M10/0569 , H01M10/058 , H01M10/4285 , H01M10/48 , H01M2004/027 , H01M2004/028
摘要： There is provided a lithium ion secondary battery comprising: a positive electrode comprising, as a positive electrode active material, a lithium nickel-containing composite oxide having a layered crystal structure; a negative electrode comprising, as a negative electrode active material, a graphitic material; and an electrolyte solution, wherein the Warburg coefficient per charge capacity (σ0), determined by an alternating current impedance method, is 0.005 or lower.
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公开(公告)号：US10027141B2
公开(公告)日：2018-07-17
申请号：US15644050
申请日：2017-07-07
发明人： Tadahiro Yoshida
摘要： A measurement unit (200) measures voltages and currents of battery cells (100). A battery control unit (400) calculates a present estimation value of a residual capacity of the battery cells (100) by integrating the currents. The voltages of the battery cells (100) are set to a reference voltage value V1 serving as a trigger of a process of correcting the estimation value of the residual capacity and an alarm voltage value Va which is a voltage higher than the reference voltage value. In addition, the battery control unit (400) continues discharge of all the battery cells (100), as it is, when an alarm condition in which a voltage of a minimum capacity cell is equal to or less than the alarm voltage value is not satisfied, and outputs a first signal when the voltage of the minimum capacity cell satisfies the alarm condition.
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