公开(公告)号：US20180053925A1

公开(公告)日：2018-02-22

申请号：US15560320

申请日：2016-02-03

申请人： NEC ENERGY DEVICES, LTD.

发明人： Akihiro MODEKI

IPC分类号： H01M2/16 ,  H01M10/0525

CPC分类号： H01M2/1653 ,  H01M2/145 ,  H01M2/16 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0566

摘要： Provided is a separator for a lithium ion secondary battery includes a porous resin layer that contains polyolefin as a main component. In a spectrum obtained by X-ray diffraction using a CuKα-ray as a ray source, the separator has a diffraction peak (A) corresponding to a (111) crystal plane of the polyolefin.

公开(公告)号：US09847180B2

公开(公告)日：2017-12-19

申请号：US14978503

申请日：2015-12-22

申请人： NEC ENERGY DEVICES, LTD.

发明人： Shinako Kaneko ,  Hitoshi Ishikawa ,  Yoko Hashizume ,  Eiji Suzuki

IPC分类号： H01M10/056 ,  H01G9/035 ,  H01G9/022 ,  H01G11/60 ,  H01M10/052 ,  H01M10/0567 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/42 ,  H01G9/145 ,  H01M10/0525 ,  H01M10/0565

CPC分类号： H01G9/035 ,  H01G9/038 ,  H01G9/145 ,  H01G11/60 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0565 ,  H01M10/0567 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/4235 ,  H01M2300/0025 ,  Y02E60/122 ,  Y02E60/13

摘要： The exemplary embodiment has an object to provide a nonaqueous electrolyte solution having a flame retardancy over a long period and having a good capacity maintenance rate. The exemplary embodiment is a nonaqueous electrolyte solution containing a lithium salt, at least one oxo-acid ester derivative of phosphorus selected from compounds represented by a predetermined formula, and at least one disulfonate ester selected from a cyclic disulfonate ester and a linear disulfonate ester represented by the predetermined formulae.

公开(公告)号：US20170331110A1

公开(公告)日：2017-11-16

申请号：US15533889

申请日：2015-12-17

申请人： NEC ENERGY DEVICES, LTD.

发明人： Kou ISHIGUCHI

IPC分类号： H01M4/587 ,  H01M10/0525 ,  B01F3/12 ,  B01F7/00 ,  B01F3/18 ,  H01M4/04 ,  H01M4/62 ,  H01M4/02

摘要： A method of producing a paste for production of a negative electrode of a lithium ion secondary battery, which includes a negative electrode active material, a thickening agent, and an aqueous binder. The method includes preparing a mixture containing the negative electrode active material and the thickening agent by dry mixing the negative electrode active material and the thickening agent in a powder state under reduced pressure; preparing a paste precursor by adding one or two or more kinds of liquid components selected from an aqueous medium and an emulsion aqueous solution containing the aqueous binder to the mixture and wet mixing the mixture; and preparing the paste for production of a negative electrode by further adding one or two or more kinds of liquid components selected from the aqueous medium and the emulsion aqueous solution containing the aqueous binder to the paste precursor and wet mixing the mixture.

公开(公告)号：US09819201B2

公开(公告)日：2017-11-14

申请号：US15070856

申请日：2016-03-15

申请人： NEC ENERGY DEVICES, LTD.

发明人： Shin Suzuki

IPC分类号： H02J7/00 ,  H01M10/44 ,  B60L11/18 ,  B60L3/00 ,  H01M10/052 ,  H01M10/42

CPC分类号： H02J7/0013 ,  B60L3/0046 ,  B60L11/1853 ,  B60L11/1859 ,  B60L11/1862 ,  B60L11/1866 ,  B60L11/1877 ,  B60L2240/547 ,  B60L2240/549 ,  H01M10/052 ,  H01M10/441 ,  H01M2010/4271 ,  H02J7/0016 ,  H02J7/0031 ,  H02J7/0045 ,  H02J7/0063 ,  H02J7/007 ,  H02J2007/0039 ,  Y02E60/122 ,  Y02T10/7005 ,  Y02T10/7011 ,  Y02T10/7044 ,  Y02T10/7055 ,  Y02T10/7061

摘要： A power storage system has a plurality of secondary battery packs and a host device. The secondary battery packs each have: secondary batteries; a charge switch means that turns a charging path to the secondary batteries ON and OFF; a discharge switch means that turns a discharging path from the secondary battery ON and OFF; and a current-limiting means that causes the secondary battery to discharge while limiting the current to, or below, a fixed value. When switching from the secondary battery pack connected to the input/output terminals of the system to a first secondary battery pack in which voltage is higher than in the second secondary battery pack, the host device causes the charge switch means of the second secondary battery pack to turn OFF the charging path while in a state in which the current limiting means of the first secondary battery pack will cause a discharge operation to begin while limiting the flow of current.

公开(公告)号：US20170309887A1

公开(公告)日：2017-10-26

申请号：US15520249

申请日：2015-08-24

申请人： NEC ENERGY DEVICES, LTD.

发明人： Masanori HIRAI ,  Takashi NAKAJIMA ,  Tetsuya SATO

IPC分类号： H01M4/04 ,  H01M10/04 ,  H01M4/139 ,  H01M10/0585

CPC分类号： H01M4/04 ,  H01M4/0404 ,  H01M4/139 ,  H01M10/04 ,  H01M10/0585

摘要： An electrode for a secondary battery including an electrode laminated assembly that has a configuration in which electrodes and a separator are laminated, includes current collector 3 and active material layer 2 formed on a surface of current collector 3. Active material layer 2 includes a thick-layer portion and a thin-layer portion that is positioned at an edge portion of the active material layer and that is smaller in thickness than the thick-layer portion, and is formed by discharging slurry containing an active material from discharge port 12a of die head 12 toward the surface of current collector 3, the slurry being supplied to die head 12 through coating valve 13. At the time of the formation of the thin-layer portion of active material layer 2, the slurry supplied through coating valve 13 having a smaller opening amount than at the time of the formation of the thick-layer portion is discharged toward current collector 3 from discharge port 12a that is closer to current collector 3 than at the time of the formation of the thick-layer portion.

公开(公告)号：US09793575B2

公开(公告)日：2017-10-17

申请号：US14423753

申请日：2013-09-03

申请人： NEC ENERGY DEVICES, LTD.

发明人： Shinako Kaneko ,  Yasutaka Kono ,  Takayuki Suzuki

IPC分类号： H01M10/0565 ,  H01M10/058 ,  H01M10/0525 ,  H01M10/052 ,  H01M6/16 ,  H01M6/18 ,  H01B1/12

CPC分类号： H01M10/0565 ,  H01B1/122 ,  H01M6/164 ,  H01M6/181 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/058 ,  Y10T29/49115

摘要： A polymer gel electrolyte containing at least a lithium salt and an aprotic solvent, in which an amorphous polymer layer is formed on the surface of an electrode active material.

公开(公告)号：US20170279153A1

公开(公告)日：2017-09-28

申请号：US15506573

申请日：2015-09-04

申请人： NEC ENERGY DEVICES, LTD.

发明人： Tomoyuki OHTA ,  Ryota YANAGISAWA ,  Takayuki SUZUKI

IPC分类号： H01M10/0525 ,  H01M4/04 ,  H01M10/42 ,  H01M2/02 ,  H01M10/058 ,  H01M10/0566

CPC分类号： H01M10/0525 ,  H01M2/0275 ,  H01M2/361 ,  H01M4/04 ,  H01M10/0566 ,  H01M10/058 ,  H01M10/4214 ,  H01M2004/027 ,  H01M2004/028 ,  Y02P70/54 ,  Y02T10/7011

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.

公开(公告)号：US09653761B2

公开(公告)日：2017-05-16

申请号：US14421230

申请日：2013-06-25

申请人： NEC ENERGY DEVICES, LTD.

发明人： Makoto Kono

IPC分类号： H02J7/00 ,  H01M10/46 ,  H01M10/42 ,  H01M10/0525

CPC分类号： H01M10/46 ,  H01M10/0525 ,  H01M10/4257 ,  H01M2220/20 ,  H02J7/0052 ,  H02J7/008 ,  Y02E60/122

摘要： An authenticator (5, 11) is compatible with a plurality of authentication systems to authenticate an external device connected with a connection terminal (OUT, ID), and the authenticator executes authentication processes by the plurality of authentication systems in order, and permits transfer of electric power between the external device and a secondary battery part (1) when any one of authentication processes is successful.

公开(公告)号：US09641006B2

公开(公告)日：2017-05-02

申请号：US14379365

申请日：2013-02-08

申请人： Tadahiro Yoshida

发明人： Tadahiro Yoshida

IPC分类号： H02J7/00 ,  H01M10/42 ,  H01M10/44 ,  H01M10/48

CPC分类号： H02J7/0026 ,  H01M10/425 ,  H01M10/441 ,  H01M10/482 ,  H01M2010/4271 ,  H02J7/0021 ,  Y02T10/7055

摘要： A battery pack (10) includes a plurality of battery cells (100), a measurement unit (measurement unit (200)), and a battery control unit (battery control unit (400)). The plurality of battery cells 100 are connected in series to each other. The measurement unit (200) measures voltages of the battery cells (100). The battery control unit (400) controls discharge of the battery cells (100) on the basis of the voltages measured by the measurement unit (200). In addition, when the battery cells (100) perform the discharge, the battery control unit (400) specifies a minimum voltage cell in which the voltage is lowest on the basis of the voltages measured by the measurement unit (200). Further, before the minimum voltage cell is over-discharged, the battery control unit (400) outputs a first signal for reducing a discharge current in the discharge.

公开(公告)号：US20170040576A1

公开(公告)日：2017-02-09

申请号：US15305688

申请日：2015-03-10

申请人： NEC ENERGY DEVICES, LTD.

发明人： Akihiro MODEKI

IPC分类号： H01M2/02 ,  H01M10/0585

CPC分类号： H01M2/0285 ,  H01M2/0287 ,  H01M2/34 ,  H01M10/0413 ,  H01M10/0436 ,  H01M10/0525 ,  H01M10/0585 ,  H01M2200/00

摘要： Secondary battery 100 comprises: battery electrode assembly (electrode laminate) 4 that includes positive electrodes 1 and negative electrodes 2 that overlap each other with separator 3 interposed therebetween; and conductive adhesive tape 5 which has a multilayer structure including adhesive layer 5a and conductive layer 5b, wherein adhesive layer 5a has conductivity and adhesiveness and adheres to a surface of battery electrode assembly 4, conductive layer 5b is laminated on adhesive layer 5a, and conductive adhesive tape 5 has electric resistance of 1.0 /cm2 or less in a thickness direction and covers at least a part of an outer peripheral portion of battery electrode assembly 4 by being wound around said part.

摘要翻译： 二次电池100包括：电极电极组件（电极层叠体）4，其包括正极1和负极2，负极2彼此重叠，隔着隔板3彼此重叠; 导电胶带5，其具有包括粘合剂层5a和导电层5b的多层结构，其中粘合层5a具有导电性和粘附性并粘附到电池电极组件4的表面，导电层5b层压在粘合剂层5a上，导电 胶带5在厚度方向上的电阻为1.0 / cm 2以下，并且通过缠绕在所述部件上而覆盖电池电极组件4的外周部的至少一部分。