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公开(公告)号：US20220188481A1
公开(公告)日：2022-06-16
申请号：US17598727
申请日：2020-03-25
Applicant: GS Yuasa International Ltd.
Inventor： Yosuke OKABE , Shigeki YAMATE
Abstract: A development support device includes a receiver that receives selection information about a degradation mechanism of a power storage device from a terminal device after user authentication of the terminal device, a simulation execution unit that simulates degradation of the power storage device by using the selected degradation mechanism based on the received selection information, and a transmitter that transmits a simulation result by the simulation execution unit or a simulation program executed in simulating the degradation of the power storage device to the terminal device.
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公开(公告)号：US20220188479A1
公开(公告)日：2022-06-16
申请号：US17440579
申请日：2020-03-18
Applicant: GS Yuasa International Ltd.
Inventor： Yosuke OKABE , Hiroyuki ENOMOTO , Shigeki YAMATE
Abstract: The present invention provides a simulation method, a simulation device, and a simulation program. A method for simulating a cell in which the electrolyte is a molten salt, the simulation method involving simulating the behavior of the cell and including a process for raising the temperature of the molten salt.
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313.发明申请公开(公告)号：US20220166234A1
公开(公告)日：2022-05-26
申请号：US17441164
申请日：2020-03-18
Applicant: GS Yuasa International Ltd.
Inventor： Shigeki HATTORI , Masakatsu FUJIMATSU
IPC: H02J7/00
Abstract: A protective circuit for an energy storage device includes: a cutoff switch that cuts off a current of the energy storage device; a drive circuit that drives the cutoff switch; a power source switch provided on a power source line of the drive circuit; and a control unit, in which the control unit switches a control terminal of the cutoff switch from a high potential to a low potential, and then turns off the power source switch.
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公开(公告)号：US20220149474A1
公开(公告)日：2022-05-12
申请号：US17598745
申请日：2020-03-18
Applicant: GS Yuasa International Ltd.
Inventor： Yasutaka MIYAWAKI
IPC: H01M50/291 , H01M50/204 , H01M50/296 , H01M10/0525
Abstract: An energy storage apparatus includes an energy storage device including a case, a spacer including a spacer main body portion arranged on a first side in a first direction of the energy storage device, and a side member including a side main body portion arranged on a first side in a second direction intersecting the first direction of the energy storage device.
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公开(公告)号：US20220140334A1
公开(公告)日：2022-05-05
申请号：US17429964
申请日：2019-09-27
Inventor： Taisei INOUE , Daisuke NISHIKAWA , Katsuya INOUE
IPC: H01M4/525 , H01M4/1391 , H01M10/052 , H01M10/0568 , H01M10/0569
Abstract: Provided is a “lithium-excess-type” active material in which a decrease in potential associated with a charge-discharge cycle is suppressed. Disclosed is a positive active material for a nonaqueous electrolyte secondary battery containing a lithium transition metal composite oxide. In this positive active material, the lithium transition metal composite oxide has an α-NaFeO2 structure, a molar ratio Li/Me of Li to a transition metal (Me) is 1.25≤Li/Me≤1.45, Ni and Mn are contained as the transition metal (Me), an X-ray diffraction pattern attributable to a space group R3-m is included, and a half-value width for a diffraction peak of a (104) plane at a Miller index hkl in X-ray diffraction measurement using a CuKα ray is 0.27° or less.
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Patent Agency Ranking
公开(公告)号：US11322947B2
公开(公告)日：2022-05-03
申请号：US16753254
申请日：2018-09-13
Applicant: GS Yuasa International Ltd.
Inventor： Jun Ikemoto , Hayato Tawa , Kazuyuki Kawamoto , Daisuke Konishi
Abstract: A power storage device 20 comprises: a plurality of power storage elements C1-C6 that are connected in series; energy transfer circuits 40 provided respectively to the plurality of power storage elements C1-C6; a common bus 50 to which the energy transfer circuits 40 of the plurality of power storage elements C1-C6 are commonly connected; and a control device 70. Each energy transfer circuit 40 includes one or a plurality of switching transformers Tr, each switching transformer having a first winding 41A that is connected to the power storage elements C1-C6 and a secondary winding 41B that is connected to the common bus 50. The control device 70 uses the switching transformers Tr of the energy transfer circuits 40 to transfer energy between the power storage elements via the common bus 50, thereby equalizing the voltages of the power storage elements C1-C6. The common bus 50 is in an electrically floating state.
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公开(公告)号：US11322925B2
公开(公告)日：2022-05-03
申请号：US15674644
申请日：2017-08-11
Applicant: GS Yuasa International Ltd.
Inventor： Masayuki Imura
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.
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公开(公告)号：US20220131177A1
公开(公告)日：2022-04-28
申请号：US17517347
申请日：2021-11-02
Applicant: GS Yuasa International Ltd.
Inventor： Kaname NAKAJIMA , Heisuke NISHIKAWA , Shuji HITOMI
IPC: H01M10/04 , H01M10/0568 , H01M10/058 , H01M10/0567 , H01M4/58 , H01M10/052 , H01M50/46 , H01M50/409 , H01M50/411 , H01M10/0525 , H01M10/0561
Abstract: A nonaqueous electrolyte secondary battery includes a sulfur-containing positive electrode, a negative electrode, a nonaqueous electrolyte, and a cation exchange resin layer which is disposed between the positive electrode and the negative electrode and has a first surface having a roughness factor of 3 or more.
A method for producing a nonaqueous electrolyte secondary battery includes a sulfur-containing positive electrode, a negative electrode, and a cation exchange resin layer which is interposed between the positive electrode and the negative electrode and has a first surface having a roughness factor of 3 or more.
The method includes injecting a lithium polysulfide-containing positive electrode electrolyte between the positive electrode and the cation exchange resin layer, and injecting a negative electrode electrolyte between the negative electrode and the cation exchange resin layer, the negative electrode electrolyte having a lithium polysulfide concentration lower than that of the positive electrode electrolyte.-
公开(公告)号：US11313914B2
公开(公告)日：2022-04-26
申请号：US16756910
申请日：2018-07-04
Applicant: GS Yuasa International Ltd.
Inventor： Toshihiro Yoshida , Yuki Nakanishi , Kazuhiro Sugie
IPC: G01R31/00 , G01R31/3842 , G01R31/389 , G01R31/392 , G01K3/00 , H01M10/48 , H02J7/00
Abstract: An energy storage system includes a lead-acid battery, a battery management unit. The battery management unit defines, based on an open voltage of the lead-acid battery, a first amount of change in a capacity of the lead-acid battery from a reference state, correlating with the open voltage of the lead-acid battery and caused by a first deterioration factor and defines, based on the first amount of change in the capacity and an amount of change in overall internal resistance of the lead-acid battery from the reference state, a second amount of change in a capacity of the lead-acid battery, not correlating with the open voltage and caused by a second deterioration factor. The battery management unit defines, based on the first and second amounts of change in the capacity, at least one of a battery capacity of the lead-acid battery or an amount of change in the battery capacity from the reference state.
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公开(公告)号：US11296326B2
公开(公告)日：2022-04-05
申请号：US16076043
申请日：2017-02-08
Applicant: GS Yuasa International Ltd.
Inventor： Hiroyuki Danno , Taku Nakamura , Keita Hamakawa , Hisayuki Yamane , Kenichiro Ueki
IPC: H01M4/62 , H01G11/26 , H01M4/04 , H01M10/0587 , H01M10/058
Abstract: An energy storage device (10) includes: an electrode assembly (400) which includes a positive electrode plate (410) and a negative electrode plate (420), wherein the positive electrode plate (410) includes: a positive electrode substrate (411) which is electrically conductive; a positive electrode composite layer (414) which is formed on the positive electrode substrate (411), and an insulating layer (415), at least a part of the insulating layer being continuously formed on the positive electrode substrate (411) and an edge portion (414a) which is a portion including an edge of the positive electrode composite layer (414), and wherein an uneven portion (415a) is formed in the insulating layer (415) above the edge portion (414a) of the positive electrode composite layer (414).
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