公开(公告)号：US20220268845A1

公开(公告)日：2022-08-25

申请号：US17563857

申请日：2021-12-28

申请人： CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

发明人： Guangyu XU ,  Shichao LI ,  Wei ZHAO

IPC分类号： G01R31/388 ,  H01M10/44 ,  G01R31/36

摘要： An embodiment of this application provides a charging control method and device and a power management controller. The charging control method includes: determining whether battery status of a battery pack meets preset conditions, where the battery pack includes a plurality of battery cells, and the preset conditions are: the battery pack has been left standing for a preset duration, and an open-circuit voltage of each battery cell in the battery pack falls within a preset range; and charging the battery pack based on a charging policy corresponding to a determining result, so that a capacity of a battery cell with a highest remaining capacity in the battery pack reaches a nominal capacity of the battery cell with the highest remaining capacity.

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：US11411421B2

公开(公告)日：2022-08-09

申请号：US16070697

申请日：2016-02-02

申请人： TOYOTA MOTOR EUROPE

发明人： Keita Komiyama ,  Yuki Katoh

IPC分类号： H02J7/00 ,  H01M10/48 ,  B60L58/15 ,  B60L58/12 ,  B60L58/16 ,  B60L58/13 ,  G01R31/44 ,  G01R31/388 ,  G01R31/3835

摘要： A control device for controlling charging of a rechargeable battery, the control device including a rechargeable dummy cell, a first circuit configured to charge the battery and the dummy cell, and a second circuit configured to measure the open circuit voltage of the dummy cell. The control device is configured to: determine the open circuit voltage of the dummy cell by using the second circuit, and determine the maximum capacity increment of the battery, which is to be charged until full charging, based on the determined open circuit voltage of the dummy cell. Also, a corresponding method of controlling charging of a rechargeable battery.

公开(公告)号：US20220244317A1

公开(公告)日：2022-08-04

申请号：US17613754

申请日：2020-05-21

申请人： GS Yuasa International Ltd.

发明人： Katsuya OJI

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

摘要： 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：US20220196742A1

公开(公告)日：2022-06-23

申请号：US17432053

申请日：2020-04-30

申请人： KRISTL, SEIBT & CO. GESELLSCHAFT M.B.H.

发明人： Thomas HAIDINGER ,  Arthur GOELDNER ,  Christian AUER

IPC分类号： G01R31/367 ,  G01R31/385 ,  G01R31/388 ,  G01R31/389

摘要： The invention relates to a device for testing, in particular high-frequency testing, a test item, for example an electrical machine or a converter, comprising:
a simulation unit for simulating an electrical energy accumulator using a simulation model; and
an electrical connection line, via which the test item can be connected to the simulation unit; wherein the device comprises compensation impedance for compensating for an impedance in accordance with a line inductance of the connection line.

公开(公告)号：US11366172B2

公开(公告)日：2022-06-21

申请号：US16956538

申请日：2018-07-24

申请人： KOREA ELECTRIC POWER CORPORATION

发明人： Jin Hyeok Choi ,  Ji Hun Lim ,  Sung Eun Lee

IPC分类号： G01R31/392 ,  G01R31/389 ,  G01R31/388 ,  H02J7/00 ,  H01M10/48

摘要： The present invention relates to an apparatus and a method for diagnosing a battery, and comprises: a power conversion unit for discharging and charging a battery; and a control unit for controlling the power conversion unit to discharge and charge the battery, and diagnosing power fade of the battery by calculating a maximum discharge output and a maximum charge output of the battery on the basis of a voltage and a current of the battery measured during discharging and charging of the battery.

公开(公告)号：US20220163591A1

公开(公告)日：2022-05-26

申请号：US17440394

申请日：2020-03-17

申请人： Vehicle Energy Japan Inc.

发明人： Fanny MATTHEY ,  Ryohhei NAKAO ,  Keiichiro OHKAWA ,  Yosuke WADA

IPC分类号： G01R31/388 ,  H01M10/44 ,  H01M10/48 ,  G01R31/392 ,  H02J7/00

摘要： A battery management apparatus 102 is an apparatus which manages a chargeable and dischargeable battery, and includes: a battery state calculation unit 501 which calculates a state of charge SOC representing the state of charge of the battery, and a charge capacity fade SOHQ representing a deterioration degree; a mid voltage calculation unit 502 which calculates a mid voltage that is present between the discharge voltage in a current state of charge of the battery, and a voltage value representing the discharge voltage in a minimum state of charge of the battery; a remaining capacity calculation unit 503 which calculates a remaining capacity of the battery, based on the state of charge SOC and the charge capacity fade SOHQ; and an available energy calculation unit 504 which calculates available energy of the battery, based on the mid voltage and the remaining capacity.

公开(公告)号：US20220146582A1

公开(公告)日：2022-05-12

申请号：US17522898

申请日：2021-11-09

申请人： POWER TRAKKER LLC

发明人： Michael Salcone ,  Thomas Reyes Caragan ,  Ann Marie Dryden ,  Edward Dennis Dryden

IPC分类号： G01R31/382 ,  G01R31/36 ,  G01R31/388

摘要： A system and structure determines when or if a utility cart is entering a restricted geographical area, and can disrupt the ignition of the cart to prevent or at least stop such use. The system can also determine a safe time and location for such ignition disruption. A monitoring device can remotely and reliably monitor the state of charge of the cart's battery, even for carts of a range of different battery energy capacities, rated voltage, and technical makeup, and communicate such information to a computer system. A standalone device can be retrofitted onto an existing golf cart without requiring fundamental changes to the cart's initial construction. The device can include an inexpensive module that can reliably monitor the battery state and implement ignition cutoff without requiring software processing capacity within the module.

公开(公告)号：US11300620B2

公开(公告)日：2022-04-12

申请号：US16626252

申请日：2017-12-19

申请人： Jiangsu University

发明人： Biao Chen ,  Haobin Jiang ,  Huanhuan Li ,  Yaping Wang ,  Qian Zhao

IPC分类号： G01R31/367 ,  G01R31/388 ,  H01M10/0525 ,  H01M10/42

摘要： A gas-liquid dynamic model-based accurate lithium-ion battery SOC estimation method, the gas-liquid dynamic model being a cylindrical closed container, a pipe and a valve that can be opened or closed being mounted at the top of the container, a liquid having a volume of Vw being held in the cylindrical container, and the remaining volume, V, being the volume of a gas having a pressure of P. According to the accurate SOC estimation method, a model, different from conventional RC equivalent circuit model and electrochemical model, is established from the perspective of a gas-liquid coexistence system. The method comprises the following steps: setting up an ideal gas state equation, a gas continuous motion equation, a gas-liquid dissolution equilibrium equation, etc. according to a gas-liquid coexistence system model; deriving steady state and transient state recursion formula of the gas-liquid coexistence system according to the model equations; performing intermittent charging and discharging stationary test on a certain model of battery; and fitting the expression of the relation between SOC and open circuit voltage, and recognizing parameter values of the gas-liquid coexistence system model, so as to achieve online estimation of a battery SOC value. The recursion formula is simple, has self-convergence characteristics, and can accurately describe the nonlinear characteristics of the battery.

公开(公告)号：US11275121B2

公开(公告)日：2022-03-15

申请号：US16948805

申请日：2020-10-01

申请人： SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC

发明人： Hideo Kondo

IPC分类号： G01R31/388 ,  G01R31/389 ,  H01M10/44 ,  H02J7/00

摘要： Various embodiments of the present technology may provide methods and apparatus for computing parasitic resistance in a battery system. The apparatus may provide various circuits to perform functions such as storing known battery characteristic data, measuring battery voltage, computing remaining capacity, determining whether the battery is charging in a constant current state, measuring the duration of the constant current state, and calculating the parasitic resistance based on the measured duration and the battery characteristic data.