公开(公告)号：US20200166581A1

公开(公告)日：2020-05-28

申请号：US16618561

申请日：2018-05-25

Applicant: GS Yuasa International Ltd.

Inventor： Nan UKUMORI ,  Yuichi IKEDA

IPC: G01R31/396 ,  G01R31/3835 ,  H01M10/48

Abstract: A storage amount estimation device is provided that can estimate a storage amount of an energy storage device containing an active material in which a storage amount-voltage characteristic exhibits a hysteresis, an energy storage module including the storage amount estimation device, a storage amount estimation method, and a computer program. An energy storage device contains an active material exhibiting hysteresis between a storage amount-voltage charge characteristic and a storage amount-voltage discharge characteristic in a positive electrode and/or a negative electrode, the active material generating a plurality of electrochemical reactions according to transition of charge-discharge. A BMU includes an acquisition unit that acquires a storage amount-voltage charge characteristic for reference and/or a storage amount-voltage discharge characteristic for reference based on the first characteristic, the second characteristic, and voltage history of the charge-discharge and an estimation unit that estimates the storage amount based on the voltage history of the charge-discharge, the third characteristic and/or the fourth characteristic, and the acquired voltage.

公开(公告)号：US10665887B2

公开(公告)日：2020-05-26

申请号：US15730297

申请日：2017-10-11

Applicant: GS Yuasa International Ltd.

Inventor： Yuichiro Yamamoto

IPC: H01M2/10 ,  H01M10/04 ,  H01M2/02 ,  H01M2/18 ,  H01M6/42

Abstract: An energy storage apparatus including: an outer case having an opening portion; a plurality of energy storage devices arranged in a first direction in the outer case; and a positioning projection disposed on opposedly facing inner side surfaces of the outer case, extending in a second direction substantially orthogonal to the first direction toward a lower side of the outer case opposite from the opening, and being capable of positioning the adjacently disposed energy storage devices at the lower side of the outer case.

公开(公告)号：US20200161888A1

公开(公告)日：2020-05-21

申请号：US16619365

申请日：2018-05-29

Applicant: GS Yuasa International Ltd.

Inventor： Yuki IMANAKA

IPC: H02J7/00 ,  H01M10/42

Abstract: A battery management system (BMS) is provided, which includes: an on-off switch provided in a current path connecting an assembled battery and electrical equipment; a controller that switches the on-off switch to an off-state when an abnormality in the assembled battery is expected; and a bypass route connected in parallel with the on-off switch and having at least one of a parasitic diode that allows current to flow only in a direction of charging the assembled battery and a parasitic diode that allows current to flow only in a direction of discharging the assembled battery. A second excitation coil is connected in series with the parasitic diode and the parasitic diode 50B in the bypass route, the second excitation coil switching the on-off switch to an on-state with magnetic flux by flow of current with a predetermined current value.

公开(公告)号：US20200161603A1

公开(公告)日：2020-05-21

申请号：US16635510

申请日：2018-07-24

Applicant: Robert Bosch GmbH ,  GS Yuasa International Ltd.

Inventor： Yukio ENOMOTO ,  Hayato USUI

IPC: H01M2/04 ,  H01M2/30 ,  B23K20/10 ,  B23K101/36 ,  B23K103/10

Abstract: Provided is a method for manufacturing an energy storage device. In the method of manufacturing an energy storage device, a lid assembly is formed by integrating a lid plate covering an opening of a case which houses a plate, an external terminal exposed to outside of the lid plate, and a conductive plate portion disposed inside the lid plate in an overlapping manner. The lid assembly is disposed between a vibrating jig and a receiving jig, a tab of the plate is disposed between the conductive plate portion and the vibrating jig, and ultrasonic welding is applied to the tab and the conductive plate portion.

公开(公告)号：US20200153255A1

公开(公告)日：2020-05-14

申请号：US16604086

申请日：2018-04-27

Applicant: GS Yuasa International Ltd.

Inventor： Tomoshige INOUE ,  Katsuhisa MICHINAGA ,  Takatomo YOSHIOKA ,  Takashi IKEDA ,  Kota SETO

IPC: H02J7/00

Abstract: A management device 21 comprising a main control part 23 that, during charging of a plurality of power storage elements 41 connected in series, outputs a first pull-down signal to a converter 11 so as to lower a charging voltage when the cell voltage of any of the power storage elements 41 is equal to or greater than a first threshold value.

公开(公告)号：US10594002B2

公开(公告)日：2020-03-17

申请号：US15556598

申请日：2016-03-30

Applicant: GS Yuasa International Ltd.

Inventor： Hiroki Matsui ,  Yuta Kashiwa ,  Seijiro Ochiai ,  Takaaki Iguchi

IPC: H02J7/00 ,  H01M10/44 ,  B60L58/12 ,  H01M4/13 ,  H01M10/052

Abstract: An embodiment provides a charge voltage controller for a chargeable and dischargeable energy storage device including an electrode assembly having a positive electrode and a negative electrode, the charge voltage controller configured to control upper limit voltage applied to charge the energy storage device in accordance with at least one of charge time of the energy storage device, current inputted to the energy storage device, temperature of the energy storage device, and a state of charge of the energy storage device, to inhibit potential of the negative electrode from being lower than deposition potential at which metal ions transmitting and receiving an electric charge between the positive electrode and the negative electrode are deposited at the negative electrode.

公开(公告)号：US20200067140A1

公开(公告)日：2020-02-27

申请号：US16466947

申请日：2017-12-07

Applicant: GS Yuasa International Ltd.

Inventor： Akifumi KIKUCHI ,  Ryota KIDO

IPC: H01M10/0567 ,  H01M4/1391 ,  H01M4/131 ,  H01M4/505 ,  H01M4/62

Abstract: Provided are a nonaqueous electrolyte energy storage device having high capacity retention ratio after charge-discharge cycles at a high temperature of about 45° C., and a method for producing such a nonaqueous electrolyte energy storage device. One aspect of the present invention is a nonaqueous electrolyte energy storage device including a positive electrode having a positive composite that contains a phosphorus atom and a lithium-transition metal composite oxide containing manganese, wherein, in a spectrum of the positive composite by X-ray photoelectron spectroscopy, a peak position for P2p is observed at 134.7 eV or less. Another aspect of the present invention is a method for producing a nonaqueous electrolyte energy storage device, the method including forming a positive electrode using a positive composite paste that contains a phosphorus oxo acid and a lithium-transition metal composite oxide containing manganese.

公开(公告)号：US20200059107A1

公开(公告)日：2020-02-20

申请号：US16498941

申请日：2018-04-05

Applicant: GS Yuasa International Ltd.

Inventor： Atsushi FUKUSHIMA

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

Abstract: An energy storage apparatus includes a plurality of energy storage devices connected in series, a voltage detection circuit that detects voltages of the plurality of energy storage devices, and a discharge circuit that discharges the energy storage devices individually, and a BMU having a control unit, in which the control unit discharges only an energy storage device having a highest voltage among the plurality of energy storage devices. Further, charging is stopped when a first duration elapses in a state that a cell voltage of the energy storage device having the highest voltage exceeds a first voltage threshold, or charging is stopped when a second duration elapses in a state that the cell voltage of the energy storage device having the highest voltage exceeds a second voltage threshold.

公开(公告)号：US20200020971A1

公开(公告)日：2020-01-16

申请号：US16486986

申请日：2018-02-16

Applicant: GS Yuasa International Ltd.

Inventor： Hirotsugu IOKA

IPC: H01M10/052 ,  H01M4/36 ,  H01M4/134 ,  H01G11/24

Abstract: A nonaqueous electrolyte energy storage device according to one aspect of the present invention is a nonaqueous electrolyte energy storage device including a positive electrode which has a conductive substrate and a positive electrode composite layer layered on the substrate, wherein the substrate is made from an aluminum alloy containing an element other than aluminum at a content of 1% by mass or more, and the positive electrode composite layer contains particles A and particles B having different particle sizes from each other as positive active materials.

公开(公告)号：US10527681B2

公开(公告)日：2020-01-07

申请号：US15557372

申请日：2016-03-30

Applicant: GS Yuasa International Ltd.

Inventor： Kazuki Furukawa ,  Hiroki Matsui ,  Seijiro Ochiai ,  Takaaki Iguchi

IPC: G01R31/392 ,  G01R31/374 ,  G01R31/36 ,  H02J7/00

Abstract: It is an object of an embodiment to provide a degradation estimator for an energy storage device, configured to estimate degradation of the energy storage device, an energy storage apparatus, an input-output control device for the energy storage device, and a method for controlling input and output of the energy storage device. The embodiment includes estimating a temporary power decrease rate of the energy storage device in accordance with at least one of an average load, a maximum load, and a ΔSOC obtained from detected current of the energy storage device and detected temperature of the energy storage device.