公开(公告)号：US20210083235A1

公开(公告)日：2021-03-18

申请号：US16954418

申请日：2018-12-17

Applicant: GS Yuasa International Ltd.

Inventor： Takashi AKIMOTO

IPC: H01M2/04 ,  H01M10/12 ,  H01M2/12 ,  H01M2/02

Abstract: A lead-acid battery (100) is provided with a lid (14). An external flow passage (530) communicating with a communication chamber (520) through a vent hole (321) and communicating with a discharge port (405) of a lid (14) is formed inside the lid (14). A compartment fence (452, 454) continuously extending over the entire width of the external flow passage (530) is formed in the external flow passage (530). A residual volume is larger than the volume of the communication chamber (520), the residual volume being obtained by subtracting, from the total volume of a plurality of external spaces (460, 462, 464) divided by the compartment fence (452, 454), the volume of the discharge-side external space (464) closest to the discharge port among the plurality of external spaces.

公开(公告)号：US20210083234A1

公开(公告)日：2021-03-18

申请号：US16954385

申请日：2018-12-17

Applicant: GS Yuasa International Ltd.

Inventor： Takashi AKIMOTO

IPC: H01M2/04 ,  H01M10/12 ,  H01M2/12 ,  H01M2/02

Abstract: A lead-acid battery (100) is provided with a lid (14). A communication chamber (520) is formed inside the lid (14). The communication chamber (520) is provided with an internal flow passage forming part (432, 522) forming an internal flow passage (Q) which communicates with a vent hole (321) and is located on the other side in a first direction than the vent hole (321). At least a part of the surface of the internal flow passage forming part (432, 522) has an uneven part (T).

公开(公告)号：US20210036308A1

公开(公告)日：2021-02-04

申请号：US17046485

申请日：2019-03-26

Applicant: GS Yuasa International Ltd.

Inventor： Akihito TSUJINAKA

IPC: H01M4/14 ,  H01M4/66 ,  H01M4/62

Abstract: A negative electrode plate for a lead-acid battery includes a negative electrode current collector and a negative electrode material. The negative electrode material contains an organic expander. The organic expander includes a condensate containing a bisphenol S unit and a phenolsulfonic acid unit.

公开(公告)号：US20210036298A1

公开(公告)日：2021-02-04

申请号：US16964136

申请日：2019-01-30

Applicant: GS Yuasa International Ltd.

Inventor： Hirokazu KAMBAYASHI ,  Shohel YAMAO ,  Takuya AOYAMA

IPC: H01M2/26 ,  H01M10/0587

Abstract: An energy storage device includes: an electrode assembly; a case that houses the electrode assembly; and a spacer that is a side spacer disposed between the electrode assembly and the case. The spacer has a rear portion disposed to face the electrode-assembly end portion, a side portion extended in a direction along the side surface of the electrode assembly, and a connection that rotatably connects the side portion to the rear portion.

公开(公告)号：US10901039B2

公开(公告)日：2021-01-26

申请号：US13897115

申请日：2013-05-17

Applicant: GS Yuasa International Ltd.

Inventor： Kenichi Sejima

IPC: G01R31/382 ,  G01R31/3835 ,  G01R31/367

Abstract: An open circuit voltage estimation device for estimating an open circuit voltage of an electric storage device includes a voltage measurement portion and a controller. The voltage measurement portion measures terminal voltages of the electric storage device. The controller is configured to: control the voltage measurement portion to measure the terminal voltages; store the terminal voltages in association with elapsed time since charge or discharge completion time; calculate a variation in terminal voltage per unit time at predetermined elapsed time since the charge or the discharge of the electric storage device is complete based on the terminal voltages measured by the voltage measurement portion; and estimate the open circuit voltage based on the predetermined elapsed time, the voltage at the predetermined elapsed time, and the variation.

公开(公告)号：US10892513B2

公开(公告)日：2021-01-12

申请号：US15766677

申请日：2016-09-30

Applicant: GS Yuasa International Ltd.

Inventor： Kaname Nakajima ,  Heisuke Nishikawa ,  Shuji Hitomi

IPC: H01M10/04 ,  H01M2/16 ,  H01M4/58 ,  H01M10/0568 ,  H01M10/058 ,  H01M10/0567 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0561 ,  H01M4/02

Abstract: One aspect of the present invention provides a nonaqueous electrolyte secondary battery including a sulfur-containing positive electrode, a negative electrode, a cation exchange resin layer interposed between the positive electrode and the negative electrode, a positive electrode electrolyte, and a negative electrode electrolyte. The positive electrode electrolyte contains lithium polysulfide, and a sulfur equivalent concentration of the positive electrode electrolyte is higher than the sulfur equivalent concentration of the negative electrode electrolyte. Another aspect of the present invention provides a nonaqueous electrolyte secondary battery including a sulfur-containing positive electrode, a negative electrode, a cation exchange resin layer interposed between the positive electrode and the negative electrode, and a nonaqueous electrolyte. At least one of the positive electrode and the negative electrode includes a cation exchange resin, and a concentration of an anion contained in the nonaqueous electrolyte is 0.7 mol/l or less.

公开(公告)号：US20200381720A1

公开(公告)日：2020-12-03

申请号：US16771281

申请日：2018-12-14

Applicant: GS Yuasa International Ltd.

Inventor： Daisuke Endo ,  Hiromasa Muramatsu

IPC: H01M4/525 ,  H01M4/505 ,  H01M4/04

Abstract: Disclosed is a positive active material for a nonaqueous electrolyte secondary battery containing a lithium transition metal composite oxide, in which the lithium transition metal composite oxide has an α-NaFeO2 structure, a molar ratio Li/Me of Li and a transition metal (Me) of 1.05≤Li/Me≤1.4, and a porosity of 5 to 15%.

公开(公告)号：US20200379050A1

公开(公告)日：2020-12-03

申请号：US16766550

申请日：2018-12-04

Applicant: GS Yuasa International Ltd.

Inventor： Yuki IMANAKA ,  Seiji TAKAI ,  Masayuki IMURA

IPC: G01R31/367 ,  G01R35/00 ,  G01R31/00 ,  H01M10/48 ,  H01M10/42 ,  H02J7/00

Abstract: A measurement device 50 of an electrochemical element 30 that is connected, via a first switch 40, to a terminal part 22P having a load connected thereto, wherein: the measurement device 50 is provided with a current limitation unit 75 provided to a bypass path BP of the first switch 40, a current sensor 60 for measuring the current of the electrochemical element 30, and a processing unit 100; when a voltage difference ΔV between the voltage of the electrochemical element 30 and the voltage of the terminal part 22P is equal to or greater than a prescribed value, the current limitation unit 75 permits the supply of power to the load through the bypass path BP, and when the voltage difference ΔV is less than the prescribed value, the current limitation unit 75 cuts off the current to the bypass path BP; and in a period of time after the first switch 40 has been turned off and until the voltage difference ΔV reaches the prescribed value due to a change in voltage of the terminal part 22P because of discharging of a charge/discharge element 170 connected in parallel to the load, the processing unit 100 performs a measurement process to measure the offset error ε of the current sensor 60.

公开(公告)号：US10833349B2

公开(公告)日：2020-11-10

申请号：US15068915

申请日：2016-03-14

Applicant: GS Yuasa International Ltd.

Inventor： Kenta Nakai ,  Tomonori Kako ,  Akihiko Miyazaki ,  Sumio Mori

IPC: H01M10/04 ,  H01M10/0583 ,  H01M2/16 ,  H01G11/52 ,  H01G11/26 ,  H01G11/76 ,  H01G11/82 ,  H01G11/12 ,  H01G11/06

Abstract: An energy storage device includes: an electrode assembly which includes: an approximately rectangular positive electrode; an approximately rectangular negative electrode which is stacked alternately with the positive electrode; and a strip-like elongated separator having a base material layer and an inorganic layer which is made to overlap with the first base material layer, wherein the elongated separator is arranged between the positive electrode and the negative electrode, and the base material layer of the elongated separator faces the negative electrode in an opposed manner between the positive electrode and the negative electrode.

公开(公告)号：US10833299B2

公开(公告)日：2020-11-10

申请号：US15781450

申请日：2016-12-28

Applicant: GS Yuasa International Ltd.

Inventor： Hirokazu Kambayashi ,  Kazuto Maeda

IPC: H01M2/08 ,  H01M2/06 ,  H01M2/04 ,  H01M2/10 ,  H01G11/80 ,  H01G11/74 ,  H01G11/84 ,  H01M2/30 ,  H01G9/00 ,  H01G9/008 ,  H01G9/10

Abstract: A sealing member (positive electrode first sealing member) disposed between a terminal (positive electrode terminal), which is provided on a case of an energy storage device, and the case or between a current collector (positive electrode current collector), which is electrically connected with the terminal, and the case. The sealing member includes a first surface (bottom surface) which faces the case and a second surface (bottom surface) which is opposite to the first surface and faces the terminal or the current collector. A first protrusion is formed on the first surface, the first protrusion surrounding a shaft portion of the terminal. A second protrusion is formed on the second surface, the second protrusion surrounding the shaft portion of the terminal. A protrusion amount of the first protrusion is different from a protrusion amount of the second protrusion.