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    METHOD AND APPARATUS FOR DETERMINING THE STATE OF HEALTH AND STATE OF CHARGE OF LITHIUM SULFUR BATTERIES
    2.
    发明申请
    METHOD AND APPARATUS FOR DETERMINING THE STATE OF HEALTH AND STATE OF CHARGE OF LITHIUM SULFUR BATTERIES 有权

    公开(公告)号：US20220082631A1

    公开(公告)日：2022-03-17

    申请号：US17405258

    申请日：2021-08-18

    申请人： Oxis Energy Limited

    发明人： Mark Wild ,  Greg Offer ,  Monica Marinescu ,  Daniel Auger ,  Abbas Fotouhi ,  Geraint Minton

    IPC分类号： G01R31/392 ,  G01R31/367 ,  H01M10/48 ,  B60L58/12 ,  G01C21/34 ,  H01M10/052

    摘要： Systems and methods for accurately determining the state of health (including state of charge and relative age) of a Lithium Sulfur battery, module or cell. The invention uses an operational model of a Lithium Sulfur cell or battery to predict model parameters under a range of conditions related to state of charge and state of health. Operational models include the memory effect due to the unique chemistry of a Lithium Sulfur cell that precludes the user of other methodologies for State of health determination for Lithium Sulfur batteries. Model parameters are identified in real life applications and parameters are compared to those of the operational Lithium Sulfur model employing Kalman filtering. The output includes an estimate of state of health and other key performance indicators. Key performance indicators are compared with measured values of for example resistance to provide feedback to the estimate process in order to improve accuracy. The system can be implemented as software or firmware in an application.

    BATTERY MANAGEMENT SYSTEM AND METHOD
    3.
    发明申请
    BATTERY MANAGEMENT SYSTEM AND METHOD 有权

    公开(公告)号：US20210234386A1

    公开(公告)日：2021-07-29

    申请号：US16972400

    申请日：2019-05-28

    申请人： OXIS ENERGY LIMITED

    发明人： Rajlakshmi PURKAYASTHA ,  Christopher HALE

    IPC分类号： H02J7/00 ,  G01R31/3842 ,  G01R31/392 ,  G01R31/3835 ,  H01M10/48 ,  H01M10/42

    摘要： A battery management system for determining a time series of normalised voltage of at least one battery cell corresponding to a time period during which a first current flows through the at least one battery cell. The battery management system comprises a cell monitoring device configured to measure a current flowing through the at least one battery cell and a voltage of the at least one battery cell at a plurality of different times during the time period; and a controller configured to determine a normalised voltage of the at least one battery cell for each of the plurality of different times, in dependence on the measured current and measured voltage corresponding to that time, wherein the determined normalised voltages at the plurality of different times form a times series of normalised voltage, wherein the normalised voltage at each of the plurality of different times corresponds to an estimate of a voltage of the at least one battery cell if a second constant current were flowing through the battery cell throughout the time period, where the second constant current is different to the first current.

    Battery sensor
    6.
    发明授权
    Battery sensor 有权

    公开(公告)号：US10955485B2

    公开(公告)日：2021-03-23

    申请号：US15754800

    申请日：2016-08-24

    申请人： Oxis Energy Limited

    发明人： Lukasz Kabacik

    IPC分类号： G01R31/392 ,  G01R31/378 ,  H01M4/38 ,  H01M10/48 ,  H01M10/052 ,  G01R31/3842 ,  G01R31/382 ,  G01B7/16 ,  H01M2/30 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/02

    摘要： There is provided a battery comprising an electrochemical unit comprising at least one electrochemical cell. The at least one electrochemical cell comprises a cell anode, a cell cathode and an electrolyte in contact with said cell anode and cell cathode. The electrochemical unit further comprises a first contact electrode mounted on a surface of the electrochemical unit. The battery further comprises a second contact electrode positioned adjacent to the electrochemical unit, whereby the first and second contact electrodes face each other to allow a contact resistance between the first contact electrode and second contact electrode to be measured.

    IINTERCONNECTION
    7.
    发明申请
    IINTERCONNECTION 审中-公开

    公开(公告)号：US20190305281A1

    公开(公告)日：2019-10-03

    申请号：US16345661

    申请日：2017-10-24

    申请人： OXIS ENERGY LIMITED

    发明人： Christopher HALE

    IPC分类号： H01M2/20 ,  H01M10/613 ,  H01M10/647 ,  H01M10/653 ,  H01M10/6551 ,  H01M10/657 ,  H01M10/48 ,  H01M10/052

    摘要： An interconnection for a battery comprising a plurality of cells, the interconnection comprising: an electrically insulating substrate having a first face and a second face; a heat sink on the first face of the substrate; and a layer of electrically conducting material on the second face of the substrate, said layer of electrically conducting material providing one or more cell-receiving regions for connection with the plurality of cells.

    Method of cycling a lithium-sulphur cell
    9.
    发明授权
    Method of cycling a lithium-sulphur cell 有权

    公开(公告)号：US09935343B2

    公开(公告)日：2018-04-03

    申请号：US14768677

    申请日：2014-03-21

    申请人： Oxis Energy Limited

    发明人： Lukasz Kabacik

    IPC分类号： H02J7/00 ,  H01M10/46 ,  H01M10/052 ,  H01M10/44 ,  H01M10/42

    CPC分类号： H01M10/46 ,  H01M10/052 ,  H01M10/44 ,  H01M2010/4271 ,  H02J7/007

    摘要： A method for cycling a lithium-sulphur cell, said method comprising discharging a lithium-sulphur cell, terminating the discharge when the voltage of the cell reaches a threshold discharge voltage that is in the range of 1.5 to 2.1V, charging the lithium-sulphur cell, and terminating the charge when the voltage of the cell reaches a threshold charge voltage that is in the range of 2.3 to 2.4V, wherein the lithium-sulphur cell is not fully charged at the threshold charge voltage, and wherein the lithium-sulphur cell is not fully discharged at the threshold discharge voltage.

    METHOD OF CHARGING A LITHIUM-SULPHUR CELL
    10.
    发明申请
    METHOD OF CHARGING A LITHIUM-SULPHUR CELL 审中-公开
    充电硫酸钠细胞的方法

    公开(公告)号：US20160006082A1

    公开(公告)日：2016-01-07

    申请号：US14768679

    申请日：2014-03-21

    申请人： OXIS ENERGY LIMITED

    发明人： Vladimir Kolosnitsyn ,  David Ainsworth ,  Lukasz Kabacik

    IPC分类号： H01M10/44 ,  H02J7/00 ,  H01M10/46

    CPC分类号： H01M10/44 ,  H01M10/052 ,  H01M10/46 ,  H01M2010/4271 ,  H02J7/0052 ,  H02J7/007

    摘要： A method for charging a lithium-sulphur cell, said method comprising: monitoring the voltage, V, of a cell during charge as a function of time, t, or capacity, Q, determining, in a voltage region in which the cell transitions between the first stage and second stage of charge, the reference capacity, Qref, of the cell at which dV/dt or dV/dQ is at a maximum, terminating charge when the capacity of the cell reaches a.Qref, where a is 1.1 to 1.4.

    摘要翻译： 一种用于对锂硫电池充电的方法，所述方法包括：监测充电期间电池的电压V作为时间，t或容量的函数，Q，在电池区域中，电池区域 电荷的第一阶段和第二阶段，dV / dt或dV / dQ处于最大值的电池的参考电容Qref，当电池的容量达到A ref时终止电荷，其中a为1.1〜 1.4。