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US Patent 11709219 Method of calibrating impedance measurements of a battery

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 US Patent 11709219 Method of calibrating impedance measurements of a battery

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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.

Infobox
Is a
Patent
Patent
0
Patent Applicant
Dynexus Technology, Inc.
Dynexus Technology, Inc.
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Current Assignee
Dynexus Technology, Inc.
Dynexus Technology, Inc.
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Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
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Patent Number
117092190
Date of Patent
July 25, 2023
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Patent Application Number
171887410
Date Filed
March 1, 2021
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Patent Citations
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US Patent 7113853 System and method for generating vehicle history information
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US Patent 7259572 Method and apparatus for detecting impedance
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US Patent 7349816 Battery management system and apparatus with runtime analysis reporting
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US Patent 7688036 System and method for storing energy
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US Patent 8193771 Battery tester
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US Patent 8352204 Method of detecting system function by measuring frequency response
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US Patent 8368357 Method and circuitry to adaptively charge a battery/cell
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US Patent 8415926 In-situ battery health detector and end-of-life indicator
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US Patent 8427112 Method and circuitry to calculate the state of charge of a battery/cell
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US Patent 8447544 Method and apparatus for detecting state of charge of battery
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US Patent 8467984 Systems, methods and computer readable media for estimating capacity loss in rechargeable electrochemical cells
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US Patent 8598849 In-situ battery health detector and end-of-life indicator
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US Patent 8638070 Method and circuitry to adaptively charge a battery/cell
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US Patent 8648602 Battery impedance detection system, apparatus and method
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US Patent 8710847 Self-correcting amplifier system
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US Patent 8738310 Automatic determination of baselines for battery testing
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US Patent 8791669 Method and circuitry to calculate the state of charge of a battery/cell
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US Patent 8831897 Determining remaining life fraction for battery networks in-situ
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US Patent 8838401 Apparatus and method for accurate energy device state-of-health (SoH) monitoring
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US Patent 8849598 In-situ battery diagnosis method using electrochemical impedance spectroscopy
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US Patent 8889309 Fuel cell system and AC impedance measurement method
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US Patent 8907631 Adaptive charging technique and circuitry for a battery/cell using multiple charge circuits and temperature data
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US Patent 8952823 Battery early warning and monitoring system
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US Patent 8970178 Method and circuitry to calculate the state of charge of a battery/cell
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US Patent 8975874 Method and circuitry to adaptively charge a battery/cell
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US Patent 9030173 Identifying and amerliorating a deteriorating condition for battery networks in-situ
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US Patent 9035621 Method and circuitry to calculate the state of charge of a battery/cell
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US Patent 9035623 Monitor and control circuitry for charging a battery/cell, and methods of operating same
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US Patent 9063018 Method and circuitry to determine temperature and/or state of health of a battery/cell
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US Patent 9121910 Method and circuitry to adaptively charge a battery/cell using the state of health thereof
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US Patent 9142994 Method and circuitry to adaptively charge a battery/cell
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US Patent 9207285 Automatic determination of multi-frequency baselines for battery testing
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US Patent 9244130 Method, system and computer-readable media for measuring impedance of an energy storage device
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US Patent 9252465 Battery recharge estimator using battery impedance response
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US Patent 9312577 Circuits and methods for determination and control of signal transition rates in electrochemical cells
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US Patent 9373972 Method and circuitry to determine the relaxation time of a battery/cell
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US Patent 9385555 Method and circuitry to determine the relaxation time of a battery/cell
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US Patent 9461492 Method and circuitry to adaptively charge a battery/cell using a charge-time parameter
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US Patent 9465077 Battery health monitoring system and method
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US Patent 9519031 Circuits and methods for impedance determination using active measurement cancelation
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US Patent 9669723 Power storage device, power system and electric vehicle
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US Patent 9851414 Energy storage cell impedance measuring apparatus, methods and related systems
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US Patent 10189354 Battery system, and method for operating said battery system
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US Patent 10345384 Device, system, and method for measuring internal impedance of a test battery using frequency response
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US Patent 10379168 Apparatuses and methods for testing electrochemical cells by measuring frequency response
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US Patent 10436873 Method of calibrating impedance measurements of a battery
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US Patent 10656233 Method of calibrating impedance measurements of a battery
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US Patent 10942240 Method of calibrating impedance measurements of a battery
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Patent Primary Examiner
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Raymond L Nimox
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CPC Code
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G01R 35/005
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G01R 31/389
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G01R 31/367
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