公开(公告)号：US12162612B2

公开(公告)日：2024-12-10

申请号：US17918290

申请日：2021-04-06

Applicant: GS Yuasa International Ltd.

Inventor： Nan Ukumori ,  Daisuke Konishi

IPC: H02J7/00 ,  B64D27/24 ,  B64U50/31 ,  H01M10/42 ,  H01M10/48 ,  H02J7/34

Abstract: An energy storage system used in a flight vehicle includes: a plurality of energy storage apparatuses; and a power transfer circuit that is connected to the plurality of energy storage apparatuses and transfer electric power between the plurality of energy storage apparatuses.

公开(公告)号：US12158485B2

公开(公告)日：2024-12-03

申请号：US17262613

申请日：2019-06-26

Applicant: GS Yuasa International Ltd.

Inventor： Atsushi Fukushima

IPC: G01R27/08 ,  G01R31/36 ,  G01R31/389 ,  H01M10/48 ,  B60K6/26 ,  B60W20/13 ,  G01R31/367 ,  H01M10/42

Abstract: An estimation apparatus for estimating internal resistance of an engine starting battery includes a processor that executes first estimation processing for estimating the internal resistance of the battery by a first estimation method based on a current change and a voltage change of the battery at the time of cranking by an engine starting apparatus, and second estimation processing for estimating the internal resistance of the battery by a second estimation method different from the first estimation method for a period from the cranking by the engine starting apparatus to the next cranking.

公开(公告)号：US20240379958A1

公开(公告)日：2024-11-14

申请号：US18291492

申请日：2022-06-22

Applicant: GS Yuasa International Ltd.

Inventor： Takashi KANEKO

IPC: H01M4/587 ,  H01M4/02 ,  H01M4/133 ,  H01M4/62

Abstract: A negative electrode according to one aspect of the present invention is a negative electrode for an energy storage device including a negative active material layer containing solid graphite, in which the solid graphite has an average circularity of 0.7 or less, and the negative active material layer further contains carbon fine particles.

公开(公告)号：US20240372367A1

公开(公告)日：2024-11-07

申请号：US18556626

申请日：2022-01-31

Applicant: GS Yuasa International Ltd.

Inventor： Hiroaki ENDO ,  Takafumi TAKUMA

IPC: H02J3/32 ,  B60L53/60 ,  B60L55/00 ,  B60L58/12 ,  H02J3/38 ,  H02J7/00

Abstract: A charging/discharging system for a distributed power supply that is interconnectable with a power grid 1 includes: a conversion circuit 22; a control unit 25 that controls the conversion circuit 22; and a charging/discharging unit 51 that is connected to the power grid 1 and the conversion circuit 22 so as to enable charging of electricity to a vehicle energy storage apparatus. The control unit 25 controls an output Iac_2 of the conversion circuit 22 such that a received power Pinv from the power grid 1 becomes a target value during charging the vehicle energy storage apparatus by the charging/discharging unit 51.

公开(公告)号：US20240339663A1

公开(公告)日：2024-10-10

申请号：US18713249

申请日：2022-11-28

Applicant: GS Yuasa International Ltd.

Inventor： Akira KISHIMOTO ,  Takashi OKUBO

IPC: H01M10/0567 ,  H01M4/02 ,  H01M4/525

CPC classification number: H01M10/0567 ,  H01M4/525 ,  H01M2004/028 ,  H01M2300/0025

Abstract: A nonaqueous electrolyte energy storage device according to an aspect of the present invention has an end-of-discharge voltage of 3.2 V or higher in normal use. and includes a nonaqueous electrolyte containing sulfates including a plurality of sulfur atoms in one molecule.

公开(公告)号：US12107208B2

公开(公告)日：2024-10-01

申请号：US17517347

申请日：2021-11-02

Applicant: GS Yuasa International Ltd.

Inventor： Kaname Nakajima ,  Heisuke Nishikawa ,  Shuji Hitomi

IPC: H01M10/0568 ,  H01M4/58 ,  H01M10/04 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0561 ,  H01M10/0567 ,  H01M10/058 ,  H01M50/46 ,  H01M50/489 ,  H01M4/02 ,  H01M50/417

CPC classification number: H01M10/045 ,  H01M4/58 ,  H01M4/5815 ,  H01M10/049 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0561 ,  H01M10/0567 ,  H01M10/0568 ,  H01M10/058 ,  H01M50/46 ,  H01M50/489 ,  H01M2004/028 ,  H01M50/417 ,  H01M2300/0017 ,  H01M2300/0037 ,  Y02E60/10 ,  Y02T10/70

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：US20240322119A1

公开(公告)日：2024-09-26

申请号：US18578125

申请日：2022-07-11

Applicant: GS Yuasa International Ltd.

Inventor： Jun OYAMA ,  Kenta NAKAI ,  Takashi KANEKO ,  Kenta UEHIRA ,  Tomonori KAKO ,  Yuto YAMAKAWA ,  Taisei SEKIGUCHI

IPC: H01M4/133 ,  H01G11/24 ,  H01G11/42 ,  H01G11/50 ,  H01M4/02 ,  H01M10/0525

CPC classification number: H01M4/133 ,  H01G11/24 ,  H01G11/42 ,  H01G11/50 ,  H01M4/02 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/027 ,  H01M2220/20

Abstract: An energy storage device according to one aspect of the present invention includes: a negative electrode including a negative active material layer; and a nonaqueous electrolyte. The negative active material layer contains a negative active material. The negative active material contains natural graphite particles. The natural graphite particles have an internal porosity of 2% or less. A state of charge of the negative active material in a charged state is 0.6 or less.

公开(公告)号：US20240275194A1

公开(公告)日：2024-08-15

申请号：US18567658

申请日：2022-04-18

Applicant: GS Yuasa International Ltd.

Inventor： Yuki IMANAKA

IPC: H02J7/00 ,  B60R16/033 ,  H01M10/42 ,  H01M10/44 ,  H01M10/46 ,  H01M10/48 ,  H01M50/209

CPC classification number: H02J7/0047 ,  H01M10/425 ,  H01M10/441 ,  H01M10/46 ,  H01M10/482 ,  H01M10/486 ,  H01M50/209 ,  H02J7/0016 ,  H02J7/007182 ,  B60R16/033 ,  H01M2010/4271

Abstract: An energy storage apparatus 1 includes: energy storage cells 30A; a balancer circuit 38; and a management unit 37. The management unit 37 performs: decreasing a difference in voltage or a difference in residual electricity amount between the energy storage cells 30A by making the energy storage cell 30A having a relatively high voltage or a relatively high residual electricity amount discharge electricity using the balancer circuit 38; determining whether or not an abnormal discharge is generated in a specific energy storage cell 30A by comparing a difference between a balancer discharge electricity amount of the specific energy storage cell 30A, which has a smallest balancer discharge electricity amount among balancer discharge electricity amounts discharged using the balancer circuit 38 within a predetermined period, and a balancer discharge electricity amount of another energy storage cell 30A with a reference value; and deciding the reference value based on at least one of an irregularity in the balancer discharge electricity amounts of the energy storage cells 30A in the predetermined period and an irregularity in self-discharge electricity amounts of the energy storage cells 30A in the predetermined period.

公开(公告)号：US12059962B2

公开(公告)日：2024-08-13

申请号：US17274655

申请日：2019-09-18

Applicant: GS Yuasa International Ltd.

Inventor： Takeyuki Shiraishi

IPC: B60L3/00 ,  B60L3/04 ,  B60L58/15 ,  B60L58/16 ,  H02H7/18

CPC classification number: B60L3/0046 ,  B60L3/04 ,  B60L58/15 ,  B60L58/16 ,  H02H7/18

Abstract: A method for controlling a power supply system for a moving body, the system including a plurality of energy storage apparatuses that are connected to a moving-body load and connected in parallel with each other, and a current breaker that is provided for each of the energy storage apparatuses and cuts off current of each energy storage apparatus. The method including: a step of detecting an abnormality in each of the energy storage apparatuses; and a step of bringing the current breaker of at least one of the energy storage apparatuses into an energized state when all the energy storage apparatuses are abnormal.

公开(公告)号：US20240243341A1

公开(公告)日：2024-07-18

申请号：US18575987

申请日：2022-03-31

Applicant: GS Yuasa International Ltd.

Inventor： Takashi Okajima

IPC: H01M10/04 ,  H01G11/06 ,  H01M10/0525 ,  H01M10/617 ,  H01M50/431

CPC classification number: H01M10/0468 ,  H01M10/617 ,  H01M50/431 ,  H01G11/06 ,  H01M10/0525

Abstract: An energy storage device according to an aspect of the present invention includes: a positive electrode; a negative electrode; and a separator disposed between the positive electrode and the negative electrode, in which the positive electrode includes a positive active material layer containing a positive active material having an average primary particle size of 1.0 μm or more, and a creep strain in the separator after a load of 2 MPa is held for 24 hours at a temperature of 65° C. is 11% or more and 28% or less.