公开(公告)号：US20220244317A1

公开(公告)日：2022-08-04

申请号：US17613754

申请日：2020-05-21

Applicant: GS Yuasa International Ltd.

Inventor： Katsuya OJI

IPC: G01R31/3835 ,  G01R31/367 ,  G01R31/388 ,  G01R31/392

Abstract: The estimation device 4 is provided with: a first acquisition unit 41 for acquiring SOC values obtained at the start and end of charging, discharging, or float-charging of a power storage element 3; a storage unit 42 storing multiple deterioration coefficients corresponding to multiple SOC ranges; an identification unit 41 for identifying, on the basis of the start and end SOC values acquired by the first acquisition unit 41, a corresponding deterioration coefficient from among the multiple deterioration coefficients stored in the storage unit 42; and an estimation unit 41 for estimating the deterioration of the power storage element 3 on the basis of the deterioration coefficient identified by the identification unit 41.

公开(公告)号：US20220238946A1

公开(公告)日：2022-07-28

申请号：US17724273

申请日：2022-04-19

Applicant: GS Yuasa International Ltd.

Inventor： Yukio ENOMOTO

IPC: H01M50/172 ,  H01M50/15 ,  H01M50/147 ,  H01M50/531 ,  H01M50/543

Abstract: An energy storage device includes an outer case including a lid plate on which an external terminal is mounted, a plate including a tab and housed in the outer case, a conductive shaft portion penetrating the lid plate and including one end thereof connected to the external terminal, and a conductive plate portion housed in the outer case, and including a first surface to which an other end of the conductive shaft portion is connected and a second surface to which the tab is connected. A size of the conductive plate portion is set larger than a size of the external terminal in a planar direction of the lid plate.

公开(公告)号：US11374225B2

公开(公告)日：2022-06-28

申请号：US16753599

申请日：2017-10-06

Applicant: GS Yuasa International Ltd.

Inventor： Ryosuke Kaneko ,  Masashi Demizu ,  Tetsuya Murai

IPC: H01M4/62 ,  H01M4/02

Abstract: In an electrode having a covering layer stacked on a composite layer, an increase in resistance of the electrode is suppressed. An electrode plate includes a composite layer including active material particles and a covering layer including filler particles stacked on the composite layer. In this electrode plate, a particle size (D30) of the active material particle is set to be equal to or smaller than a particle size (D50) of the filler particle.

公开(公告)号：US20220200287A1

公开(公告)日：2022-06-23

申请号：US17603261

申请日：2020-04-17

Applicant: GS Yuasa International Ltd.

Inventor： Hiroaki ENDO ,  Masao YOKOYAMA ,  Shinichi HONGO

IPC: H02J3/38 ,  H02J3/32 ,  H02J3/00 ,  H02J3/46

Abstract: A power control apparatus for a distributed power supply interconnected with a power system includes: a conversion circuit that performs reverse conversion of converting power supplied from the distributed power supply from direct current to alternating current and outputting the converted power; and a control device that controls the conversion circuit. The control device changes a target value of received power at a power reception point of the power system on the basis of a predicted value of a power generation amount of the distributed power supply and a predicted value of power consumption of a demand facility, and controls an output of the conversion circuit such that the received power at the power reception point becomes a target value.

公开(公告)号：US20220187139A1

公开(公告)日：2022-06-16

申请号：US17440122

申请日：2020-03-18

Applicant: GS Yuasa International Ltd.

Inventor： Yosuke OKABE ,  Shigeki YAMATE

IPC: G01K1/20 ,  H01M10/48 ,  H02J7/00

Abstract: The present invention provides an estimation device and an estimation method. The present invention comprises: an input unit to which are inputted an element temperature measured for some power storage elements among a plurality of power storage elements that constitute a power storage device, and an environment temperature of the power storage device; and an estimation unit that estimates the temperature of the power storage elements on the basis of a heat balance model for the power storage elements, the heat balance model being represented using the element temperature and the environment temperature.

公开(公告)号：US20220170990A1

公开(公告)日：2022-06-02

申请号：US17442761

申请日：2020-03-24

Applicant: GS Yuasa International Ltd.

Inventor： Seiji TAKAI

IPC: G01R31/387 ,  G01R1/20 ,  H01M10/42 ,  H01M10/48 ,  H02H7/18

Abstract: A battery management device manages an energy storage device to which a shunt resistor is connected. The battery management device includes: a current measurement unit that measures a current flowing through the shunt resistor using a pair of signal wires connected to both ends of the shunt resistor; a connecting wire that connects the signal wire to a reference potential source via an opening/closing switch; and a determination unit that determines presence or absence of a failure in which connection between the pair of signal wires via the shunt resistor becomes defective based on a change in current measured by the current measurement unit when the opening/closing switch is opened and closed.

公开(公告)号：US20220140631A1

公开(公告)日：2022-05-05

申请号：US17575303

申请日：2022-01-13

Applicant: GS Yuasa International Ltd.

Inventor： Atsushi FUKUSHIMA

IPC: H02J7/00 ,  H01M10/44 ,  H01M10/0525 ,  H01M10/48 ,  H01M10/42 ,  H02J7/16

Abstract: An energy storage apparatus includes: a plurality of energy storage devices connected in series; a voltage detection unit that detects voltages of the plurality of energy storage devices; a discharge circuit that discharges the energy storage devices; and a control unit. The energy storage devices include lithium ion cells. The plurality of energy storage devices is chargeable by an external charger for a lead-acid battery, wherein a charge voltage per cell of the external charger for the lead-acid battery is higher than a maximum voltage of the energy storage device, and wherein the control unit discharges only an energy storage device having a highest voltage out of the plurality of energy storage devices when the plurality of energy storage devices is charged by a charger.

公开(公告)号：US11302902B2

公开(公告)日：2022-04-12

申请号：US16385287

申请日：2019-04-16

Applicant: Robert Bosch GmbH ,  GS Yuasa International Ltd.

Inventor： Joo Young Choi ,  Sarmimala Hore

IPC: H01M4/04 ,  H01M10/04 ,  H01M10/0525 ,  H01M2/18 ,  H01M4/139 ,  H01M50/463 ,  H01M10/0587

Abstract: The invention refers to a method for manufacturing an electrode assembly for a battery cell, whereat segments of a first electrode are placed between a continuous first separator sheet and a continuous second separator sheet; segments of a second electrode are placed on an opposite side of the first separator sheet in respect of the segments of the first electrode and on an opposite side of the second separator sheet in respect of the segments of the first electrode such that a tape element is formed; and the tape element is folded such that the segments of the first electrode and the segments of the second electrode are aligned in a stacking direction. The invention also refers to a battery cell, in particular a lithium ion battery cell, comprising an electrode assembly manufactured using the method according to the invention.

公开(公告)号：US11285813B2

公开(公告)日：2022-03-29

申请号：US16496900

申请日：2018-03-28

Applicant: GS Yuasa International Ltd.

Inventor： Atsushi Fukushima

IPC: G01R31/3828 ,  B60L3/00 ,  H01M10/44 ,  B60L58/13

Abstract: An estimation device that estimates the SOC of an energy storage device includes a current measurement unit, an estimation unit, and a change unit, in which the estimation unit executes an estimation process for estimating the SOC of the energy storage device by integrating a current measured by the current measurement unit, and a correction process for charging, when a predetermined correction condition is reached, the energy storage device to full charge or the vicinity thereof, and correcting an error in the estimated SOC value, and the change unit changes the correction condition according to a state of the energy storage device.

公开(公告)号：US11276857B2

公开(公告)日：2022-03-15

申请号：US16965137

申请日：2019-02-01

Applicant: GS Yuasa International Ltd.

Inventor： Yusuke Mizuno

IPC: H01M4/525 ,  C01G51/00 ,  H01M4/485 ,  H01M4/505 ,  H01M10/0525 ,  H01M4/02

Abstract: One aspect of the present invention is a positive active material containing an oxide containing lithium and a transition metal element M, in which the transition metal element M is cobalt, iron, copper, manganese, nickel, chromium, or a combination thereof, and in an X-ray diffraction pattern of the oxide, a ratio (Ia/Ib) of peak intensity Ia appearing in a range where 2θ is 20 to 25° and peak intensity Ib appearing in a range where 2θ is 30 to 35° is 0.2 or more and 0.8 or less.