公开(公告)号：US20180006337A1

公开(公告)日：2018-01-04

申请号：US15479361

申请日：2017-04-05

Applicant: Lenovo (Beijing) Co., Ltd.

Inventor： Baoning HUANG ,  Bingcai LUO

IPC: H01M10/44 ,  H01M10/04 ,  H01M2/08 ,  H01M10/46 ,  H02J7/00 ,  H01M2/34

CPC classification number: H01M10/446 ,  H01M2/08 ,  H01M2/34 ,  H01M10/0431 ,  H01M10/46 ,  H02J7/0029 ,  H02J7/007 ,  H02J2007/0037

Abstract: A battery includes a cell including a core and a sealing film enclosing the core. The core includes a negative electrode plate, a metal plate, a separator, and a positive electrode plate arranged successively. The battery further includes a protection circuit coupled to the negative electrode plate and one of the metal plate or the positive electrode plate to measure a reference voltage between the negative electrode plate and the one of the metal plate or the positive electrode plate.

公开(公告)号：US09859589B2

公开(公告)日：2018-01-02

申请号：US15103402

申请日：2014-08-08

Applicant: NEC Corporation

Inventor： Jiro Iriyama ,  Makihiro Otohata ,  Kazuaki Matsumoto ,  Ikiko Shimanuki

IPC: H01M10/052 ,  H01M10/0585 ,  H01M10/0569 ,  H01M10/058 ,  H01M10/05 ,  H01M2/12 ,  H01M2/36 ,  H01M10/44

CPC classification number: H01M10/0585 ,  H01M2/12 ,  H01M2/36 ,  H01M2/361 ,  H01M2/362 ,  H01M2/365 ,  H01M10/05 ,  H01M10/0569 ,  H01M10/058 ,  H01M10/446

Abstract: It is an object of the present invention to provide a method for producing a secondary battery in which water in the outer package can be removed even when the secondary battery includes an electrolytic solution containing a halogen-containing compound. The present exemplary embodiment is a method for producing a secondary battery including an electrolytic solution containing a supporting salt, a nonaqueous solvent, and a halogen-containing compound, an electrode assembly including a negative electrode and a positive electrode, and an outer package, the method including (1) disposing a first solution containing at least the supporting salt and the nonaqueous solvent, and the electrode assembly in the outer package; (2) charging the electrode assembly; (3) emitting from the outer package a gas generated by the charge; and (4) injecting a second solution including at least the halogen-containing compound into the outer package after the gas is emitted, wherein the first solution does not contain the halogen-containing compound, and the electrolytic solution includes the first solution and the second solution.

公开(公告)号：US09825281B2

公开(公告)日：2017-11-21

申请号：US13629001

申请日：2012-09-27

Applicant: GS YUASA INTERNATIONAL LTD.

Inventor： Daisuke Endo ,  Miki Yasutomi ,  Yoshihiro Katayama ,  Toshiyuki Nukuda

IPC: H01M4/04 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  C01G45/12 ,  C01G51/00 ,  C01G53/00 ,  H02J7/00 ,  H01M10/44

CPC classification number: H01M4/0445 ,  C01G45/1228 ,  C01G51/42 ,  C01G51/50 ,  C01G53/50 ,  C01P2002/50 ,  C01P2002/72 ,  C01P2002/74 ,  C01P2002/77 ,  C01P2004/82 ,  C01P2006/40 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  H01M10/446 ,  H02J7/00 ,  Y10T29/49108

Abstract: A lithium secondary battery is produced by employing a charging method where a positive electrode upon charging has a maximum achieved potential of 4.3 V (vs. Li/Li+) or lower. The lithium secondary battery contains an active material including a solid solution of a lithium transition metal composite oxide having an α-NaFeO2-type crystal structure. The solid solution has a diffraction peak observed near 20 to 30° in X-ray diffractometry using CuKα radiation for a monoclinic Li[Li1/3Mn2/3]O2-type before charge-discharge. The lithium secondary battery is charged to reach at least a region with substantially flat fluctuation of potential appearing in a positive electrode potential region exceeding 4.3 V (vs. Li/Li+) and 4.8 V (vs. Li/Li+) or lower. A dischargeable electric quantity in a potential region of 4.3 V (vs. Li/Li+) or lower is 177 mAh/g or higher.

公开(公告)号：US09735453B2

公开(公告)日：2017-08-15

申请号：US13847696

申请日：2013-03-20

Applicant: Altairnano, Inc.

Inventor： Veselin Manev ,  John Shelbourne ,  Paul Royer ,  Mike Coleman

IPC: H01M10/52 ,  H01M10/0525 ,  H01M10/058 ,  H01M10/44 ,  H01M4/485

CPC classification number: H01M10/52 ,  H01M4/485 ,  H01M10/0525 ,  H01M10/058 ,  H01M10/446 ,  Y02E60/122 ,  Y02P70/54

Abstract: The invention relate to methods of preparing lithium ion cells including cells using Li4Ti5O12 as negative electrode material and layered transition metal oxides as positive electrode material or composite positive electrode wherein one of the components is layered transition metal oxide in which the amount of moisture in the cell is reduced such that the characteristics of the cell such as cycle life and cell impedence are improved.

公开(公告)号：US20170229736A1

公开(公告)日：2017-08-10

申请号：US15502027

申请日：2015-08-04

Applicant: NEC Corporation

Inventor： Ikiko SHIMANUKI ,  Hitoshi ISHIKAWA ,  Noboru YOSHIDA ,  Daisuke KAWASAKI

IPC: H01M10/0567 ,  H01M4/587 ,  H01M10/0569 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0585

CPC classification number: H01M10/0567 ,  H01M4/366 ,  H01M4/505 ,  H01M4/525 ,  H01M4/587 ,  H01M10/0525 ,  H01M10/0569 ,  H01M10/058 ,  H01M10/0585 ,  H01M10/446 ,  H01M2004/021 ,  H01M2220/20 ,  H01M2300/0037 ,  Y02E60/122 ,  Y02P70/54 ,  Y02T10/7011

Abstract: The present invention relates to a lithium secondary battery having a positive electrode comprising a positive electrode active material capable of absorbing and releasing lithium ions, a negative electrode comprising a negative electrode active material capable of absorbing and releasing lithium ions, and an electrolyte solution, wherein a positive electrode surface detection component comprises at least one negative secondary ion peak selected from CH3S2O6− and CHS2O4−, and further comprises a negative secondary ion peak of SO3—, wherein the positive electrode surface detection component is detected when a primary ion is irradiated on the surface of the positive electrode active material by a Time-of-Flight Secondary Ion Mass Spectrometry (TOF-SIMS) method. According to the present invention, it is possible to provide a lithium secondary battery having excellent cycle characteristics.

公开(公告)号：US20170222263A1

公开(公告)日：2017-08-03

申请号：US15125797

申请日：2015-02-23

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Takahiro SAKURAI ,  Hiroyasu KADO ,  Hirohiko MORIKAWA ,  Hisanao KOJIMA

IPC: H01M10/0567 ,  H01M10/054 ,  H01M10/0587

CPC classification number: H01M10/0567 ,  H01M4/13 ,  H01M4/366 ,  H01M4/62 ,  H01M10/0431 ,  H01M10/052 ,  H01M10/054 ,  H01M10/0587 ,  H01M10/446 ,  H01M2300/0025 ,  Y02T10/7011

Abstract: Provided is a nonaqueous electrolyte secondary battery with better battery performance than in the past, by forming an SEI coat with very little non-uniformity on the surface of the negative electrode active material layer. The invention provides a nonaqueous electrolyte secondary battery in which an electrode assembly including a positive electrode, a separator, and a negative electrode, and a nonaqueous electrolyte are contained in a battery case. In this secondary battery, the nonaqueous electrolyte contains a crown ether that forms a complex with a sodium ion, and the negative electrode includes a negative current collector, a negative electrode active material layer containing a negative electrode active material formed on the surface of the current collector, and a coat including an oxalato complex structure and provided on at least part of the surface of the negative electrode active material layer.

公开(公告)号：US20170214261A1

公开(公告)日：2017-07-27

申请号：US15328786

申请日：2015-07-24

Applicant: Nicoventures Holdings Limited

Inventor： Colin GRATTON

IPC: H02J7/00 ,  B65D43/16 ,  H01M10/44 ,  B65D25/10 ,  A24F15/18 ,  A24F47/00

CPC classification number: H02J7/0044 ,  A24F15/18 ,  A24F47/008 ,  B65D25/10 ,  B65D43/163 ,  H01M10/4221 ,  H01M10/44 ,  H01M10/446 ,  H01M10/46 ,  H01M2220/30 ,  H02J7/0021 ,  H02J7/0029 ,  H02J7/0063 ,  H02J2007/0039

Abstract: A rechargeable pack is provided for containing and recharging an e-cigarette. The pack includes a pack battery; a first connector which is electrically connectable to an external power source; a first recharging mechanism for re-charging the pack battery using the external power source when the first connector is electrically connected to the external power source; a tube for receiving an e-cigarette such that the e-cigarette can be contained within the recharging pack; a second connector which is electrically connectable to the e-cigarette when the e-cigarette is received within the tube; and a second recharging mechanism for re-charging the e-cigarette using the pack battery when the e-cigarette is electrically connected to the second connector. The second recharging mechanism is configured to provide protection against the pack battery providing excessive current through the second connector.

公开(公告)号：US20170179482A1

公开(公告)日：2017-06-22

申请号：US14973439

申请日：2015-12-17

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Mark W. Verbrugge ,  Qinglin Zhang ,  Xingcheng Xiao

IPC: H01M4/38 ,  H01M4/134 ,  H01M10/0525

CPC classification number: H01M4/386 ,  H01M4/134 ,  H01M10/0525 ,  H01M10/446 ,  H01M2004/027 ,  H01M2220/20 ,  H01M2220/30

Abstract: In an example of a method for improving a life cycle of a battery containing a lithium-silicon negative electrode, the battery is provided. The battery includes a positive electrode; the lithium-silicon negative electrode, which has at least 10% of its capacity attributed to a silicon-based active material; a separator positioned between the positive and negative electrodes; and an electrolyte. The battery is operated within a voltage potential window ranging from about 0.7 V and about 0.07 V versus a lithium reference electrode.

公开(公告)号：US20170170530A1

公开(公告)日：2017-06-15

申请号：US15325325

申请日：2015-07-10

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yukiyoshi UENO ,  Yuuichi ITO ,  Kunimitu YAMAMOTO ,  Junko OHIRA

IPC: H01M10/44 ,  H01M10/058 ,  H01M10/0566

CPC classification number: H01M10/446 ,  H01M10/0566 ,  H01M10/0567 ,  H01M10/058

Abstract: A method of manufacturing a nonaqueous secondary battery includes: constructing a battery assembly with a positive electrode, a negative electrode, and a nonaqueous electrolytic solution, the nonaqueous electrolytic solution containing an unsaturated carbonate; activating the battery assembly to decompose a portion of the unsaturated carbonate such that a percentage of the unsaturated carbonate is adjusted to be 0.9 mass % or less with respect to 100 mass % of a total amount of the nonaqueous electrolytic solution; self-discharging the battery assembly to measure a voltage drop amount; and determining whether internal short-circuit occurs in the battery assembly based on the voltage drop amount.

公开(公告)号：US20170110720A1

公开(公告)日：2017-04-20

申请号：US15293909

申请日：2016-10-14

Applicant: NORTHWESTERN UNIVERSITY ,  UCHICAGO ARGONNE, LLC

Inventor： Mark C. Hersam ,  Laila Jaber Ansari ,  Kanan P. Puntambekar ,  Michael M. Thackeray

IPC: H01M4/36 ,  H01M10/0525 ,  H01M10/0569 ,  H01M4/04 ,  H01M4/505 ,  H01M4/62

CPC classification number: H01M4/366 ,  H01M4/0402 ,  H01M4/0426 ,  H01M4/0428 ,  H01M4/0445 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/505 ,  H01M4/525 ,  H01M4/628 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0569 ,  H01M10/446 ,  H01M2004/021 ,  H01M2004/028 ,  H01M2300/0037 ,  Y02T10/7011

Abstract: Disclosed herein are graphene-coated lithium manganese oxide spinels cathodes for high-performance batteries Li-ion batteries and methods for making thereof. A single-layer graphene coating is shown to significantly reduce manganese loss in the cathodes while concurrently promoting the formation of a well-defined solid electrolyte interphase layer.