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81.发明公开公开(公告)号：US20240154431A1
公开(公告)日：2024-05-09
申请号：US18415945
申请日：2024-01-18
申请人： ECOFLOW INC.
发明人： Lei WANG , Yunhui XING
IPC分类号： H02J7/00 , G01R31/388
CPC分类号： H02J7/0014 , G01R31/388 , H02J7/0029 , H02J7/0048 , H02J7/0063 , H02J7/00712 , H02J7/007194
摘要： A charging management method for multiple battery packs comprises determining a target charging current of each battery pack according to a sampled temperature of each battery pack and a sampled voltage of each battery pack; calculating a difference between the sum of the target charging currents of various battery packs and the sum of sampled charging currents of the various battery packs, to obtain a total PI adjustment value; sending the total PI adjustment value to a charging device, to enable the charging device to adjust a total charging current according to the total PI adjustment value; determining a charging current of each battery pack according to the sampled charging current of each battery pack and the total charging current, and determining a charging voltage of each battery pack according to the sampled voltage of each battery pack.
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公开(公告)号：US20240133964A1
公开(公告)日：2024-04-25
申请号：US18244620
申请日：2023-09-10
发明人： Moritz Eitler
IPC分类号： G01R31/388 , B60L58/12 , B60L58/16 , G01R31/392
CPC分类号： G01R31/388 , B60L58/12 , B60L58/16 , G01R31/392 , G01R31/367
摘要： A method is provided for determining a capacity of a traction battery. The method includes initiating and/or waiting a predetermined time during which a battery current is below a threshold amount. The method proceeds by selecting an OCV characteristic curve from a group of such curves (31-33, 41-43) based on at least two parameters (P1, P2, . . . Pn). At least one parameter (P1) describes a cell characteristic of battery cells used in the traction battery, and at least a second parameter (P2) describes an operating parameter of the traction battery prior to the predetermined time and/or during the predetermined time. The method continues by determining an open circuit voltage of the traction battery after the predetermined time has elapsed and determining the capacity of the battery based on the selected OCV characteristic curve.
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公开(公告)号：US20240120763A1
公开(公告)日：2024-04-11
申请号：US18271920
申请日：2022-10-12
发明人： Sung Ju HONG
IPC分类号： H02J7/00 , G01R31/388 , G01R31/389 , G01R31/392
CPC分类号： H02J7/007182 , G01R31/388 , G01R31/389 , G01R31/392 , H02J7/0048 , H02J7/005 , H02J7/0016
摘要： A method for controlling battery banks may include measuring bank voltages of the battery banks, determining a first contact resistance of one or more internal resistance components for each of the battery banks, determining a second contact resistance of one or more external resistance components for each of the battery banks, determining a contact resistance for each of the battery banks based on the first contact resistance and the second contact resistance, determining each of compensation bank voltages by subtracting a voltage drop due to a corresponding one of the contact resistances from a respective one of the bank voltages, and controlling the battery banks based on at least one of the bank voltages and the compensation bank voltages. The method may be performed by a battery control system. A battery system using the method is also provided.
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公开(公告)号：US20240094307A1
公开(公告)日：2024-03-21
申请号：US18153536
申请日：2023-01-12
IPC分类号： G01R31/396 , G01R31/367 , G01R31/388
CPC分类号： G01R31/396 , G01R31/367 , G01R31/388
摘要： A method includes applying a preliminary discharge/charge cycle to a plurality of battery cells to obtain an initial capacity of each battery cell, applying multiple small current discharge/charge cycles to the plurality of battery cells to minimize initial voltage deviations of the plurality of battery cells, configuring a first battery cell to be tested at a plurality of first testing points, configuring a second battery cell to be tested at a plurality of second testing points, and configuring a third battery cell to be tested at a plurality of third testing points, wherein the first battery cell, the second battery cell and the third battery cell are tested concurrently for generating an OCV-SOC curve, and the plurality of first testing points, the plurality of second testing points and the plurality of third testing points are arranged in an alternate manner.
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公开(公告)号：US11885829B2
公开(公告)日：2024-01-30
申请号：US16639518
申请日：2018-08-14
申请人： DUKOSI LIMITED
IPC分类号： H01M10/44 , G01R31/388 , G01R31/396 , G01R31/385 , G01R31/374 , H01M10/0525 , H01M10/42 , H01M10/48
CPC分类号： G01R31/388 , G01R31/374 , G01R31/3865 , G01R31/396 , H01M10/0525 , H01M10/4228 , H01M10/446 , H01M10/482 , H01M10/486
摘要： A maturation process for an electric battery cell comprises charging the electric battery cell, subjecting the electric battery cell to a maturation period of at least one day while no electrical load other than a measurement apparatus is connected to the electric battery cell, and taking at least one measurement of the open circuit voltage of the electric battery cell during the maturation period using the measurement apparatus. The measurement apparatus is incorporated into a structure of the electric battery cell, forming an integral part of the electric battery cell. The maturation process further comprises determining whether electric battery cell is defective in dependence on the at least one measurement.
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公开(公告)号：US11828810B2
公开(公告)日：2023-11-28
申请号：US17628066
申请日：2020-07-13
申请人： SAFT
IPC分类号： G01R31/3842 , G01R31/388
CPC分类号： G01R31/3842 , G01R31/388
摘要： The present invention concerns a method for estimating the state of charge (SoC) of an electrochemical element. The method comprises the initiation of an operation charging or discharging the electrochemical element that is traversed by a current and, while the charging or discharging operation is taking place: an operation charging or discharging a power storage element that is traversed by the same current as the electrochemical element, the power storage element having a voltage/charge level relationship that is bijective for at least two values of the voltage at the terminals of the storage element, the capacity CES of the storage element representing a portion of the total capacity of the electrochemical element; detection that the storage element is charged or discharged; calculation of a new value of the capacity CN of the electrochemical element by means of the formula CN=CN-I+CES for a charging operation and CN=CN-1−CES for a discharging operation, in which CN-1 is a previous known value of the capacity of the electrochemical element.
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公开(公告)号：US11828808B2
公开(公告)日：2023-11-28
申请号：US17432053
申请日：2020-04-30
IPC分类号： G01R31/367 , G01R31/389 , G01R31/385 , G01R31/388
CPC分类号： G01R31/367 , G01R31/388 , G01R31/389 , G01R31/3865
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：US20230369663A1
公开(公告)日：2023-11-16
申请号：US18227074
申请日：2023-07-27
发明人： Jin Seok HONG , Jeong Kuk SHON , Young-Gyoon RYU
IPC分类号： H01M10/44 , H01M10/48 , H02J7/00 , G01R31/388
CPC分类号： H01M10/44 , H01M10/48 , H02J7/007184 , G01R31/388 , H02J7/00714 , H02J7/0071 , H02J7/0048
摘要： A method for charging a battery includes: determining a first charging section, in which a current charging rate of the battery is located, from among a plurality of charging sections predetermined based on a functional relation between a state of charge of the battery and an open circuit voltage of an anode of the battery; and charging the battery for the first charging section with a first charging rate corresponding to the first charging section.
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公开(公告)号：US20230341467A1
公开(公告)日：2023-10-26
申请号：US17922733
申请日：2021-07-27
发明人： Ji Hye PARK , Wontae JOE
IPC分类号： G01R31/389 , G01R31/3842 , G01R31/388
CPC分类号： G01R31/389 , G01R31/3842 , G01R31/388
摘要： Discussed are a device, a system and a method for estimating a performance of a rechargeable battery. The device can include a current sensor to measure a discharge current output from a rechargeable battery during a discharge period in which the rechargeable battery is discharged from a predetermined reference voltage with a constant voltage, and a control circuit to calculate a resistance change relationship depending on a State of Charge (SOC) change during the discharge period based on the predetermined reference voltage and a change of the discharge current depending on time passage.
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公开(公告)号：US20230324470A1
公开(公告)日：2023-10-12
申请号：US18192648
申请日：2023-03-30
申请人： SK ON CO., LTD.
发明人： Chang Mook HWANG , Jong Hyuk LEE , Yoon Ji JO
IPC分类号： G01R31/392 , G01R31/374 , G01R31/388 , G01R31/385
CPC分类号： G01R31/392 , G01R31/374 , G01R31/388 , G01R31/3865
摘要： An apparatus and a method for determining a defect of a battery cell are disclosed. The defect determination apparatus according to an aspect includes: a temperature measurement unit configured to measure an aging temperature of the battery cell; a period determination unit configured to determine an aging period of the battery cell; an SOC determination unit configured to measure and determine a state of charge (SOC) of the battery cell at the start of aging; a voltage measurement unit configured to measure open circuit voltages (OCVs) of the battery cell at the start of aging and at the end of aging; and a defect determination unit configured to determine whether the battery cell is defective based on the aging temperature, the aging period, the SOC at the start of aging, the OCV at the start of aging and the OCV at the end of aging.
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