Patents Assigned to Dynexus Technology, Inc.
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Patent number: 11933856Abstract: A method for screening and matching cells for qualification and binning can include conducting a first and second impedance-based measurement of a cell separated by a rest interval of the cell and analyzing change/shift in the impedance spectrum obtained before and after the rest interval to afford algorithms to match, categorize, or group cells within a plurality of cells (C1 . . . Cn) that have the same, substantially the same, or fall within a range of structural or functional parameters based on the impedance change/shift in the impedance spectrum.Type: GrantFiled: November 23, 2022Date of Patent: March 19, 2024Assignee: Dynexus Technology, Inc.Inventor: Jon P. Christophersen
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Publication number: 20230375491Abstract: An in-line rapid impedance measurement device and methods of performing in-line rapid impedance spectroscopy including a switch network operable under a switching algorithm useful to rapidly perform targeted impedance measurements to assess state of health, defect or failure of battery packs or modules having a plurality of electrochemical cells interconnected in series or parallel and to isolate individual cells within a pack or module to distinguish between non-repeatable anomalous impedance measurements from repeatable deviant impedance measurements and identify the source of deviant impedance measurements.Type: ApplicationFiled: July 31, 2023Publication date: November 23, 2023Applicant: Dynexus Technology, Inc.Inventor: Jon P. Christophersen
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Patent number: 11714056Abstract: An in-line rapid impedance measurement device and methods of performing in-line rapid impedance spectroscopy including a switch network operable under a switching algorithm useful to rapidly perform targeted impedance measurements to assess state of health, defect or failure of battery packs or modules having a plurality of electrochemical cells interconnected in series or parallel and to isolate individual cells within a pack or module to distinguish between non-repeatable anomalous impedance measurements from repeatable deviant impedance measurements and identify the source of deviant impedance measurements.Type: GrantFiled: August 22, 2022Date of Patent: August 1, 2023Assignee: Dynexus Technology, IncInventor: Jon P. Christophersen
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Patent number: 11709219Abstract: A method of calibration is described that simplifies the measurement of battery impedance conducted in-situ while determining battery state-of-health. A single shunt measurement with a known Sum of Sines (SOS) current, at the desired frequency spread and known root mean squared (RMS) current is used to create a calibration archive. A calibration selected from this archive is used to calibrate an impedance measurement made on the battery.Type: GrantFiled: March 1, 2021Date of Patent: July 25, 2023Assignee: Dynexus Technology, Inc.Inventors: John L. Morrison, William H. Morrison
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Publication number: 20230091066Abstract: A method for screening and matching cells for qualification and binning can include conducting a first and second impedance-based measurement of a cell separated by a rest interval of the cell and analyzing change/shift in the impedance spectrum obtained before and after the rest interval to afford algorithms to match, categorize, or group cells within a plurality of cells (C1 . . . Cn) that have the same, substantially the same, or fall within a range of structural or functional parameters based on the impedance change/shift in the impedance spectrum.Type: ApplicationFiled: November 23, 2022Publication date: March 23, 2023Applicant: Dynexus Technology, Inc.Inventor: Jon P. Christophersen
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Publication number: 20230031969Abstract: Devices and methods to perform AC impedance measurement of a device which use an excitation signal including a root mean squared current or a root mean squared voltage in a sequence of one or more frequency groups, wherein each of said frequency groups includes a summation of one or more frequencies within a frequency spread.Type: ApplicationFiled: May 1, 2020Publication date: February 2, 2023Applicant: Dynexus Technology, Inc.Inventors: Bryce Hill, John Morrison, Jon P. Christophersen
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Publication number: 20220397541Abstract: An in-line rapid impedance measurement device and methods of performing in-line rapid impedance spectroscopy including a switch network operable under a switching algorithm useful to rapidly perform targeted impedance measurements to assess state of health, defect or failure of battery packs or modules having a plurality of electrochemical cells interconnected in series or parallel and to isolate individual cells within a pack or module to distinguish between non-repeatable anomalous impedance measurements from repeatable deviant impedance measurements and identify the source of deviant impedance measurements.Type: ApplicationFiled: August 22, 2022Publication date: December 15, 2022Applicant: Dynexus Technology Inc.Inventor: Jon P. Christophersen
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Patent number: 11519969Abstract: A method for screening and matching cells for qualification and binning can include conducting a first and second impedance-based measurement of a cell separated by a rest interval of the cell and analyzing change/shift in the impedance spectrum obtained before and after the rest interval to afford algorithms to match, categorize, or group cells within a plurality of cells (C1 . . . Cn) that have the same, substantially the same, or fall within a range of structural or functional parameters based on the impedance change/shift in the impedance spectrum.Type: GrantFiled: January 22, 2021Date of Patent: December 6, 2022Assignee: Dynexus Technology, Inc.Inventor: Jon P. Christophersen
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Patent number: 11422102Abstract: An in-line rapid impedance measurement device and methods of performing in-line rapid impedance spectroscopy including a switch network operable under a switching algorithm useful to rapidly perform targeted impedance measurements to assess state of health, defect or failure of battery packs or modules having a plurality of electrochemical cells interconnected in series or parallel and to isolate individual cells within a pack or module to distinguish between non-repeatable anomalous impedance measurements from repeatable deviant impedance measurements and identify the source of deviant impedance measurements.Type: GrantFiled: January 8, 2021Date of Patent: August 23, 2022Assignee: Dynexus Technology, Inc.Inventor: Jon P. Christophersen
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Publication number: 20220206076Abstract: Impedance testing devices, circuits, systems, and related methods are disclosed. A Device Under Test (DUT) is excited with a multispectral excitation signal for an excitation time period while the DUT is under a load condition from a load operably coupled to the DUT. A response of the DUT is sampled over a sample time period. The sample time period is configured such that it includes an in-band interval during the excitation time period and one or more out-of-band intervals outside of the in-band interval. A response of the DUT to the load condition during the in-band interval is estimated by analyzing samples of the response from the one or more out-of-band intervals. Adjusted samples are computed by subtracting the estimated load response during the in-band interval from the samples from the in-band interval. An impedance of the DUT is estimated by analyzing the adjusted samples.Type: ApplicationFiled: May 1, 2020Publication date: June 30, 2022Applicant: Dynexus Technology, Inc.Inventor: John Morrison
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Publication number: 20210231743Abstract: A method for screening and matching cells for qualification and binning can include conducting a first and second impedance-based measurement of a cell separated by a rest interval of the cell and analyzing change/shift in the impedance spectrum obtained before and after the rest interval to afford algorithms to match, categorize, or group cells within a plurality of cells (C1 . . . Cn) that have the same, substantially the same, or fall within a range of structural or functional parameters based on the impedance change/shift in the impedance spectrum.Type: ApplicationFiled: January 22, 2021Publication date: July 29, 2021Applicant: Dynexus Technology, Inc.Inventor: Jon P. Christophersen
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Publication number: 20210215628Abstract: An in-line rapid impedance measurement device and methods of performing in-line rapid impedance spectroscopy including a switch network operable under a switching algorithm useful to rapidly perform targeted impedance measurements to assess state of health, defect or failure of battery packs or modules having a plurality of electrochemical cells interconnected in series or parallel and to isolate individual cells within a pack or module to distinguish between non-repeatable anomalous impedance measurements from repeatable deviant impedance measurements and identify the source of deviant impedance measurements.Type: ApplicationFiled: January 8, 2021Publication date: July 15, 2021Applicant: Dynexus Technology, Inc.Inventor: Jon P. Christophersen
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Publication number: 20210181290Abstract: A method of calibration is described that simplifies the measurement of battery impedance conducted in-situ while determining battery state-of-health. A single shunt measurement with a known Sum of Sines (SOS) current, at the desired frequency spread and known root mean squared (RMS) current is used to create a calibration archive. A calibration selected from this archive is used to calibrate an impedance measurement made on the battery.Type: ApplicationFiled: March 1, 2021Publication date: June 17, 2021Applicant: Dynexus Technology, Inc.Inventors: John L. Morrison, William H. Morrison
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Patent number: 10942240Abstract: A method of calibration is described that simplifies the measurement of battery impedance conducted in-situ while determining battery state-of-health. A single shunt measurement with a known Sum of Sines (SOS) current, at the desired frequency spread and known root mean squared (RMS) current is used to create a calibration archive. A calibration selected from this archive is used to calibrate an impedance measurement made on the battery.Type: GrantFiled: April 17, 2020Date of Patent: March 9, 2021Assignee: Dynexus Technology, Inc.Inventors: John L. Morrison, William H. Morrison
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Publication number: 20200241102Abstract: A method of calibration is described that simplifies the measurement of battery impedance conducted in-situ while determining battery state-of-health. A single shunt measurement with a known Sum of Sines (SOS) current, at the desired frequency spread and known root mean squared (RMS) current is used to create a calibration archive. A calibration selected from this archive is used to calibrate an impedance measurement made on the battery.Type: ApplicationFiled: April 17, 2020Publication date: July 30, 2020Applicant: Dynexus Technology, Inc.Inventors: John L. Morrison, William H. Morrison
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Patent number: 10656233Abstract: A method of calibration is described that simplifies the measurement of battery impedance conducted in-situ while determining battery state-of-health. A single shunt measurement with a known Sum of Sines (SOS) current, at the desired frequency spread and known root mean squared (RMS) current is used to create a calibration archive. A calibration selected from this archive is used to calibrate an impedance measurement made on the battery.Type: GrantFiled: June 5, 2019Date of Patent: May 19, 2020Assignee: Dynexus Technology, Inc.Inventors: John L. Morrison, William H. Morrison
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Patent number: 10436873Abstract: A method of calibration is described that simplifies the measurement of battery impedance conducted in-situ while determining battery state-of-health. A single shunt measurement with a known Sum of Sines (SOS) current, at the desired frequency spread and known root mean squared (RMS) current is used to create a calibration archive. A calibration selected from this archive is used to calibrate an impedance measurement made on the battery.Type: GrantFiled: April 25, 2017Date of Patent: October 8, 2019Assignees: Dynexus Technology, Inc., Montana Technological UniversityInventors: John L. Morrison, William H. Morrison
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Publication number: 20190302215Abstract: A method of calibration is described that simplifies the measurement of battery impedance conducted in-situ while determining battery state-of-health. A single shunt measurement with a known Sum of Sines (SOS) current, at the desired frequency spread and known root mean squared (RMS) current is used to create a calibration archive. A calibration selected from this archive is used to calibrate an impedance measurement made on the battery.Type: ApplicationFiled: June 5, 2019Publication date: October 3, 2019Applicants: Dynexus Technology, Inc., Montana Technological UniversityInventors: John L. Morrison, William H. Morrison