公开(公告)号：US20230168304A1

公开(公告)日：2023-06-01

申请号：US17916041

申请日：2021-09-01

申请人： BEIJING INSTITUTE OF TECHNOLOGY

发明人： Rui XIONG ,  Jinpeng TIAN ,  Yanzhou DUAN

IPC分类号： G01R31/367 ,  G01R31/378 ,  G01R31/392

CPC分类号： G01R31/367 ,  G01R31/378 ,  G01R31/392

摘要： An artificial intelligence (AI)-based charging curve reconstruction and state estimation method for a lithium-ion battery is provided to estimate various states of a battery. In the method, a complete charging curve is reconstructed through deep learning with charging data segments as input. Then, a plurality of states of the battery can be extracted from the complete charging curve, including a maximum capacity, maximum energy, a state of charge (SOC), a state of energy (SOE), a state of power (SOP), and a capacity increment curve. The battery charging curve reconstruction and state estimation method is adaptively updated with a change in a working state of the battery.

公开(公告)号：US11662389B2

公开(公告)日：2023-05-30

申请号：US17384148

申请日：2021-07-23

申请人： Analog Devices International Unlimited Company

发明人： Hemtej Gullapalli ,  Erfan Soltanmohammadi ,  Han Zhang ,  Michael W. O'Brien

IPC分类号： G01R31/3835 ,  G01R31/367 ,  G01R31/389 ,  G01R31/378 ,  G01R31/374 ,  G01K7/02

CPC分类号： G01R31/3835 ,  G01K7/02 ,  G01R31/367 ,  G01R31/374 ,  G01R31/378 ,  G01R31/389

摘要： Sensors and methods for determining the state of charge of a battery are described. The state of charge is determined in some instances by applying a current perturbation having a frequency to the battery terminals, monitoring the response signal, and determining the phase of the response signal. The phase may be correlated to the state of charge of the battery, so that once the phase is determined, a determination of the state of charge of the battery may be made. In some situations, the state of charge may be used to determine the operating condition of a load connected to the battery. In some embodiments, the state of charge may be used to determine whether the battery is defective.

公开(公告)号：US20230163328A1

公开(公告)日：2023-05-25

申请号：US17992977

申请日：2022-11-23

申请人： Robert Bosch GmbH

发明人： Jean-Claude Njodzefon ,  Kevin Widmann ,  Petra Wagner ,  Thomas Hupfer

IPC分类号： H01M8/04119 ,  G01R31/378

CPC分类号： H01M8/04141 ,  G01R31/378 ,  H01M2008/1293

摘要： A test system for characterizing solid oxide cells includes at least one gas control unit, at least one fuel gas mixture line, at least one hydrogen gas line, and at least one oxygen gas line. The at least one gas control unit includes at least three stack layers, and at least one hydration unit to humidify the uniform gas mixture. The hydration unit is disposed in a hydration layer of the at least three stack layers. At least one mixing chamber is directly connected in a gas-conductive manner to the fuel gas mixture line and the hydration unit, and is configured for producing the uniform gas mixture and is disposed in a mixing layer of the at least three stack layers. At least one test station for a solid oxide cell is disposed on a test layer of the at least three stack layers.

公开(公告)号：US11448702B2

公开(公告)日：2022-09-20

申请号：US17056206

申请日：2019-05-20

申请人： Panasonic Intellectual Property Management Co., Ltd.

发明人： Yuto Horiuchi ,  Taisuke Yamamoto

IPC分类号： H02J7/04 ,  G01R31/378 ,  G01R31/382 ,  H02J7/00 ,  H01M10/44 ,  H01M10/48 ,  H01M4/134 ,  H01M4/62 ,  H01M4/02

摘要： A method for charging a nonaqueous electrolyte secondary battery includes a first charging step of charging a first capacity Q1st at a first constant current value I1st, the first capacity Q1st including a capacity range in which dQSi/dQ is more than or equal to a predetermined threshold value, a second charging step of charging a second capacity at a second constant current value more than the first constant current value, a detection step of acquiring at least one of dV/dQ and dQSi/dQ, and a changing step of changing at least one of the timing of switching between the first charging step and the second charging step and the first constant current value I1st on the basis of a change in time of dV/dQ or dQSi/dQ.

公开(公告)号：US11422194B2

公开(公告)日：2022-08-23

申请号：US17290346

申请日：2019-06-04

申请人： EnNet Company Limited

发明人： Noboru Oyama ,  Shuichiro Yamaguchi ,  Rin Furudate

IPC分类号： G01R31/367 ,  G01R31/392 ,  G01R31/388 ,  G01R31/378

摘要： A battery diagnosis apparatus and a battery diagnosis method for accurately diagnosing a secondary battery are proposed. A pulse current generator, a voltage measuring instrument that measures a voltage response to application of a current pulse, a first data processing device that obtains a chronopotentiogram (CP) indicating a change in the voltage response over time and normalizes the CP, a database that saves normalized data, and a second data processing device that uses a correlation between the saved data and a battery state expressing factor prepared in advance to make a battery diagnosis are used. Desirably, the current pulse is a current in the same direction at the time of data obtainment and at the time of a diagnosis. Further, a noise filter for an input signal of the CP and resampling means for reducing the number of pieces of data input to the first data processing device are provided.

公开(公告)号：US20220206072A1

公开(公告)日：2022-06-30

申请号：US17698472

申请日：2022-03-18

申请人： Analog Devices, Inc.

发明人： Frank YAUL ,  Sunrita PODDAR ,  Hemtej GULLAPALLI ,  Omer TANOVIC

IPC分类号： G01R31/367 ,  G01R31/389 ,  G01R31/378 ,  G01R31/392 ,  G01R31/382

摘要： One embodiment is a method for estimating an internal temperature of a battery, the method comprising obtaining multiple terminal impedance measurements, wherein each of the terminal impedance measurements is taken at a different one of a plurality of frequencies; determining model parameters for a multivariable polynomial regression model; and applying the multivariable polynomial regression model to the multiple terminal impedance measurements to estimate the internal temperature of the battery.

公开(公告)号：US11327117B2

公开(公告)日：2022-05-10

申请号：US17014056

申请日：2020-09-08

申请人： Institute of Nuclear Energy Research, Atomic Energy Council, Executive Yuan, R.O.C.

发明人： Hung-Hsien Ku ,  Ning-Yih Hsu ,  Chin-Lung Hsieh ,  Yi-Hsin Hu ,  Qiao-Ya Chen

IPC分类号： G01R31/36 ,  H01M8/18 ,  H01M8/04537 ,  G01R31/378

摘要： An apparatus is provided for measuring the power of electrolytes at different positions of a flow battery by switching six-way valves without reconnecting channels. With the measurements at the positions, weighting is processed to obtain power corresponding to charging statuses for determining accurate power. The charging and discharging of voltage and current of the battery are controlled for constant operations with high efficiency. Consequently, the efficiency of power conversion is improved; energy consumption is reduced; and the battery is always run within a safe power-range for avoiding accidents or damages to the battery. In addition, the present invention is further applicable to a device monitoring the features of a battery unit. The six-way valves online monitor the power at center positions by switching. The values measured at different positions are aimed at the abnormality of the battery unit for processing adjustment or offline replacement to maintain best operation performance.

公开(公告)号：US20210364575A1

公开(公告)日：2021-11-25

申请号：US17056206

申请日：2019-05-20

申请人： Panasonic Intellectual Property Management Co., Ltd.

发明人： Yuto Horiuchi ,  Taisuke Yamamoto

IPC分类号： G01R31/378 ,  H01M10/44 ,  H01M10/48 ,  H02J7/00 ,  G01R31/382

摘要： A method for charging a nonaqueous electrolyte secondary battery includes a first charging step of charging a first capacity Q1st at a first constant current value I1st, the first capacity Q1st including a capacity range in which dQSi/dQ is more than or equal to a predetermined threshold value, a second charging step of charging a second capacity at a second constant current value more than the first constant current value, a detection step of acquiring at least one of dV/dQ and dQSi/dQ, and a changing step of changing at least one of the timing of switching between the first charging step and the second charging step and the first constant current value I1st on the basis of a change in time of dV/dQ or dQSi/dQ.

公开(公告)号：US11152806B2

公开(公告)日：2021-10-19

申请号：US16540481

申请日：2019-08-14

申请人： Qnovo Inc.

发明人： Nadim Maluf ,  Fred Berkowitz

IPC分类号： H02J7/00 ,  G01R31/378 ,  G01R31/392

摘要： Disclosed is a method for identifying a battery type and/or a battery user. Measuring circuitry may be used to collect battery parameters that may be analyzed by control circuitry to create an adaptive charge profile that is applied to a battery by charging circuitry. Battery parameters may be recorded in a battery use signature. Logic may be used to process a battery use signature and identify a single user across multiple battery operated devices and/or discriminate between multiple users of a device. In some cases, battery use signature may be used to identify battery information including the make, model, and lot from which the battery was manufactured.

公开(公告)号：US11131716B2

公开(公告)日：2021-09-28

申请号：US15190759

申请日：2016-06-23

申请人： INTEL CORPORATION

发明人： Naoki Matsumura

IPC分类号： G01R31/389 ,  G01R31/3842 ,  G01R31/378 ,  G01R31/36 ,  G01R31/367

摘要： Estimating a charge state for a flat-voltage profile battery can be accomplished using impedance measurements. For example, an impedance measurement can be used to form a fuel gauge for a lithium-air (Li-Air) battery. As the impedance of a Li-Air battery increases during discharge, it corresponds to a state of charge (i.e., a charge state). The impedance can be used to create charge state data to use with a fuel gauge.