公开(公告)号：US20180366957A1

公开(公告)日：2018-12-20

申请号：US16060003

申请日：2016-11-30

申请人： Oxis Energy Limited

发明人： Christopher Hale

IPC分类号： H02J7/00 ,  G01R31/36

CPC分类号： H02J7/0021 ,  G01R31/367 ,  G01R31/378 ,  G01R31/3842 ,  G01R31/386 ,  G01R31/387 ,  G01R31/392 ,  H01M10/052 ,  H02J2007/005 ,  Y02T10/7055

摘要： There is provided a Lithium-Sulfur battery management system for determining a state of charge of a Lithium-Sulfur battery (LS1). The management system comprises a first circuit having at least one reactive element (Cb), and the first circuit is configured to discharge and charge fixed amounts of charge from and to the battery (LS1) via the at least one reactive element (Cb). The management system also comprises a second circuit (DA1, MC1) for monitoring the discharging and charging, and the second circuit is configured to measure the discharge time and the charge time of the fixed amounts of charge, and determine the state of charge based on those times. There is further provided a method for determining the state of charge of the Lithium-Sulfur battery.

公开(公告)号：US20220102758A1

公开(公告)日：2022-03-31

申请号：US17275582

申请日：2019-09-13

申请人： Oxis Energy Limited

发明人： Jacob LOCKE ,  Sebastien LIATARD ,  James DIBDEN

IPC分类号： H01M10/0568 ,  H01M10/0569 ,  H01M4/62 ,  H01M4/38 ,  H01M4/58 ,  H01M10/0525

摘要： An electrochemical cell comprising:
an anode comprising lithium or sodium metal, or lithium or sodium metal alloy; an ionically conductive cathode comprising an electroactive sulfur material; and a liquid electrolyte comprising at least one lithium salt or at least one sodium salt, wherein the polysulfide solubility of the electrolyte is less than 500 mM.

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.

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.

公开(公告)号：US20180231616A1

公开(公告)日：2018-08-16

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： G01R31/36 ,  G01B7/16 ,  H01M2/30 ,  H01M10/0525 ,  H01M4/38 ,  H01M4/62 ,  H01M10/48

CPC分类号： G01R31/392 ,  G01B7/18 ,  G01R31/378 ,  G01R31/382 ,  G01R31/3842 ,  H01M2/30 ,  H01M4/38 ,  H01M4/382 ,  H01M4/621 ,  H01M4/625 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/48 ,  H01M2004/027

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.

公开(公告)号：US09899705B2

公开(公告)日：2018-02-20

申请号：US15102110

申请日：2014-12-16

申请人： Oxis Energy Limited

发明人： Agata B. Swiatek

IPC分类号： H01M10/0567 ,  H01M10/0525 ,  H01M4/38 ,  H01M4/58 ,  H01M10/052 ,  H01M10/0568 ,  H01M10/0569 ,  H01M2/16 ,  H01M4/134 ,  H01M10/058

CPC分类号： H01M10/0567 ,  H01M2/16 ,  H01M2/162 ,  H01M4/134 ,  H01M4/38 ,  H01M4/5815 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/058

摘要： An electrolyte for a lithium sulphur cell comprising at least one lithium salt and at least one organic solvent; and a surfactant, wherein the concentration of surfactant in the electrolyte is 0.5-3 weight %.

公开(公告)号：US11316352B2

公开(公告)日：2022-04-26

申请号：US16626195

申请日：2018-07-05

申请人： OXIS ENERGY LIMITED

发明人： Christopher Hale

IPC分类号： H02J7/00 ,  H01M10/052 ,  H01M10/42 ,  H01M10/44 ,  H01M10/46 ,  H01M10/48 ,  H02J7/34

摘要： A battery management system (103) for a battery (100) comprising a plurality of battery cells (101, 102) connected in parallel with each other. The battery management system comprises an electronic circuit (104) for connection across at least one of the plurality of battery cells. The electronic circuit comprises a charge storage device (105) and a switching device (106). The switching device switches the circuit between a first state in which charge is discharged from the at least one battery cell and directed to the charge storage device and a second state in which charge is discharged from the charge storage device and directed to the at least one battery cell. The switching device is arranged to repeatedly switch the circuit between the first state and the second state to cause the at least one battery cell to undergo pulsed charging and discharging to and from the charge storage device.

公开(公告)号：US11125827B2

公开(公告)日：2021-09-21

申请号：US15566661

申请日：2016-04-18

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.

公开(公告)号：US10581255B2

公开(公告)日：2020-03-03

申请号：US16060003

申请日：2016-11-30

申请人： Oxis Energy Limited

发明人： Christopher Hale

IPC分类号： H02J7/00 ,  G01R31/3842 ,  G01R31/387 ,  G01R31/392 ,  G01R31/378 ,  G01R31/385 ,  G01R31/367 ,  H01M10/052

摘要： There is provided a Lithium-Sulfur battery management system for determining a state of charge of a Lithium-Sulfur battery (LS1). The management system comprises a first circuit having at least one reactive element (Cb), and the first circuit is configured to discharge and charge fixed amounts of charge from and to the battery (LS1) via the at least one reactive element (Cb). The management system also comprises a second circuit (DA1, MC1) for monitoring the discharging and charging, and the second circuit is configured to measure the discharge time and the charge time of the fixed amounts of charge, and determine the state of charge based on those times. There is further provided a method for determining the state of charge of the Lithium-Sulfur battery.

公开(公告)号：US20180095141A1

公开(公告)日：2018-04-05

申请号：US15566661

申请日：2016-04-18

申请人： Oxis Energy Limited

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

IPC分类号： G01R31/36 ,  H01M10/052 ,  B60L11/18 ,  G01C21/34

CPC分类号： G01R31/392 ,  B60L58/12 ,  G01C21/3407 ,  G01R31/367 ,  H01M10/052 ,  H01M10/48

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.