公开(公告)号：US10033025B2

公开(公告)日：2018-07-24

申请号：US14875573

申请日：2015-10-05

Applicant: GS Yuasa International Ltd.

Inventor： Takuma Tonari

IPC: H01M2/26 ,  H01M2/20 ,  H01M2/30 ,  H01M10/0525 ,  H01M10/04 ,  H01M10/0587

Abstract: An energy storage apparatus includes energy storage devices each of which including an electrode assembly, a current collector connected to the electrode assembly, a terminal plate including a through hole, and a metal-made fastening member which fastens the terminal plate and the current collector to each other, and a bus bar physically connected to the terminal plate at a contacting surface of the bus bar and the terminal plate. The metal-made fastening member includes a body portion fixed to the current collector, a shaft portion extending from the body portion and passing through the through hole, and a swaged portion formed on the shaft portion outside the energy storage devices and fixing the terminal plate between the swaged portion and the body portion in a sandwiching manner.

公开(公告)号：US09991551B2

公开(公告)日：2018-06-05

申请号：US14658059

申请日：2015-03-13

Applicant: GS Yuasa International Ltd.

Inventor： Takeshi Nakamoto ,  Koichi Nishiyama

IPC: H02J7/00 ,  H01M10/0525 ,  H01M4/485 ,  H01M10/44 ,  H01M4/58 ,  H01M10/42 ,  H01M4/36 ,  H01M4/587

CPC classification number: H01M10/0525 ,  H01M4/364 ,  H01M4/485 ,  H01M4/5825 ,  H01M4/587 ,  H01M10/4285 ,  H01M10/441 ,  H01M2010/4271 ,  H01M2010/4278 ,  H02J7/0073 ,  H02J7/0077

Abstract: A method of charging an assembled battery, includes mechanically connecting two external terminals of an assembled battery and two connecting lines of a charging circuit, respectively, the assembled battery including a plurality of lithium ion battery cells connected in series, a lithium ion battery cell of the plurality of lithium ion battery cells including a positive electrode active material including a first lithium compound comprising iron, the two external terminals, and a first communicating unit. The method also includes electrically connecting the first communicating unit of the assembled battery to a second communicating unit of the charging circuit, charging the assembled battery through the two external terminals using a quasi-constant voltage charging procedure, and reducing a charging current toward a late stage during the charging of the assembled battery.

公开(公告)号：US20180145318A1

公开(公告)日：2018-05-24

申请号：US15576079

申请日：2016-05-27

Applicant: GS Yuasa International Ltd.

Inventor： Daisuke ENDO ,  Hiromasa MURAMATSU

IPC: H01M4/505 ,  H01M4/525 ,  H01M10/052

Abstract: Provided is a positive active material for a nonaqueous electrolyte secondary battery which includes a lithium transition metal composite oxide. A molar ratio (Li/Me) of Li and a transition metal (Me) that form the lithium transition metal composite oxide is more than 1. The transition metal (Me) includes Mn, Ni and Co. The lithium transition metal composite oxide has an α-NaFeO2-type crystal structure, an X-ray diffraction pattern attributable to a space group R3-m, and a full width at half maximum (FWHM (104)) for the diffraction peak of the (104) plane at a Miller index hkl in X-ray diffraction measurement using a CuKα ray of 0.21° or more and 0.55° or less. A ratio (FWHM (003)/FWHM (104)) of a full width at half maximum for the diffraction peak of the (003) plane and the full width at half maximum for the diffraction peak of the (104) plane at the Miller index hkl is 0.72 or less. Particles of the lithium transition metal composite oxide have a peak differential pore volume of 0.33 mm3/(g·nm) or less.

公开(公告)号：US09954219B2

公开(公告)日：2018-04-24

申请号：US14152933

申请日：2014-01-10

Applicant: GS Yuasa International Ltd.

Inventor： Taro Yamafuku ,  Masaki Masuda ,  Kazuki Kawaguchi ,  Takeshi Sasaki

IPC: H01M4/36 ,  H01M4/04 ,  H01M4/136 ,  H01M4/1397 ,  H01M4/66 ,  H01M4/02 ,  H01M4/62 ,  H01M10/0525

CPC classification number: H01M4/364 ,  H01M4/0404 ,  H01M4/043 ,  H01M4/136 ,  H01M4/1397 ,  H01M4/622 ,  H01M4/661 ,  H01M4/663 ,  H01M4/667 ,  H01M10/0525 ,  H01M2004/021

Abstract: Provided is an electric storage device including: a first electrode plate, a second electrode plate having a polarity opposite to that of the first electrode plate, and a separator interposed between the first electrode plate and the second electrode plate, wherein the first electrode plate includes a current collector, a conductive layer laminated onto the current collector, and a mixture layer laminated onto the conductive layer, the mixture layer contains a binder and primary particles of an active material as its constituents, and the primary particles as a constituent of the mixture layer are partially retained in the conductive layer.

公开(公告)号：US20180097380A1

公开(公告)日：2018-04-05

申请号：US15723983

申请日：2017-10-03

Applicant: GS Yuasa International Ltd.

Inventor： Atsushi Fukushima

IPC: H02J7/00 ,  B60R16/033

CPC classification number: H02J7/0031 ,  B60R16/033 ,  H02J2007/004

Abstract: An energy storage apparatus for a vehicle, the energy storage apparatus including: an energy storage device; and a cut-off device which cuts off a current to/from the energy storage device when a voltage or a capacity of the energy storage device is lower than a threshold. The threshold for the cut-off device is different between a state in which the vehicle is traveling and a state in which the vehicle is being parked.

公开(公告)号：US20180095137A1

公开(公告)日：2018-04-05

申请号：US15701058

申请日：2017-09-11

Applicant: GS Yuasa International Ltd.

Inventor： Takatomo Yoshioka ,  Katsuhisa Michinaga ,  Takumi Kimura

IPC: G01R31/36 ,  H02J7/00

CPC classification number: G01R31/3842 ,  G01R15/202 ,  G01R19/16542 ,  G01R31/392 ,  G01R31/396 ,  H02J7/0026

Abstract: An energy storage apparatus includes a plurality of energy storage devices connected in series, a voltage detection unit configured to detect voltage of each of the energy storage devices, and a monitoring unit configured to monitor the plurality of energy storage devices. The monitoring unit determines a state of the energy storage apparatus in accordance with average cell voltage or an average SOC of the plurality of energy storage devices and minimum cell voltage of the plurality of energy storage devices.

公开(公告)号：US20180090789A1

公开(公告)日：2018-03-29

申请号：US15829364

申请日：2017-12-01

Applicant: GS Yuasa International Ltd.

Inventor： Yudai Kawasoe ,  Katsushi Nishie

IPC: H01M10/0567 ,  H01M10/0525 ,  H01M4/58 ,  H01M4/133 ,  H01M10/058 ,  H01M4/587

CPC classification number: H01M10/0567 ,  H01M4/133 ,  H01M4/5825 ,  H01M4/587 ,  H01M10/0525 ,  H01M10/058 ,  H01M2300/0025 ,  H01M2300/004 ,  Y02E60/122 ,  Y02T10/7011 ,  Y10T29/49108

Abstract: A nonaqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and a nonaqueous electrolyte. A positive electrode charge potential is 3.7 V or less with respect to a lithium metal potential. The nonaqueous electrolyte includes a cyclic disulfone compound having a specific structure in an amount of 0.1 to 4.0% by mass based on a total mass of the nonaqueous electrolyte.

公开(公告)号：US20180083267A1

公开(公告)日：2018-03-22

申请号：US15562762

申请日：2016-03-28

Applicant: GS Yuasa International Ltd.

Inventor： Eriko SASAKI ,  Ikumi MOTOI

IPC: H01M4/14 ,  H01M8/08 ,  H01M2/36 ,  H01M8/1041 ,  H01M4/16

CPC classification number: H01M4/14 ,  H01M2/364 ,  H01M4/16 ,  H01M4/62 ,  H01M8/08 ,  H01M8/1055

Abstract: A lead-acid battery includes a negative electrode plate that comprises: a negative electrode material which has a density of 2.7 g/cm3 or more and 3.8 g/cm3 or less and contains an organic expander having an S element content of 3900 μmol/g or more; and a current collector.

公开(公告)号：US20180069274A1

公开(公告)日：2018-03-08

申请号：US15552761

申请日：2016-03-09

Applicant: GS Yuasa International Ltd.

Inventor： Ryo MATSUBARA ,  Takeyuki SHIRAISHI

IPC: H01M10/48 ,  B60L11/18 ,  G06F1/32

CPC classification number: H01M10/48 ,  B60L50/51 ,  B60L58/22 ,  G06F1/3212 ,  H01M10/44 ,  H01M10/482 ,  H02J7/0031 ,  H02J7/0032 ,  H02J2007/004

Abstract: A monitoring apparatus for an energy storage device provided at a movable body and electrically connected to a load of the movable body via a switch, includes a monitoring unit supplied with power from the energy storage device. The monitoring unit executes monitoring operation of bringing the switch from a closed state into an opened state under a condition that the energy storage device has voltage not more than a discharge voltage threshold, and bringing the switch from the opened state into the closed state under a condition that the switch is in the opened state and the energy storage device satisfies a predetermined discharge recovery condition, and decreases power consumption by extending an interval of the monitoring operation when the load is under suspension while the switch is in the opened state, in comparison to a case where the load is in operation.

公开(公告)号：US20180062371A1

公开(公告)日：2018-03-01

申请号：US15674644

申请日：2017-08-11

Applicant: GS Yuasa International Ltd.

Inventor： Masayuki IMURA

IPC: H02H1/00 ,  H02H7/18

Abstract: An overcurrent detection device including: a current detection resistor that is connected in series to a main circuit and is configured to cause a potential difference at both ends according to a current flowing through the main circuit; a current detection circuit that includes a pair of connection portions and is configured to detect a potential difference between the pair of connection portions; a pair of voltage detection lines connecting the both ends of the current detection resistor to the pair of connection portions in the current detection circuit; and an erroneous detection prevention unit configured to prevent an increase in the potential difference between the pair of connection portions when at least any one of the pair of voltage detection lines has a connection failure.