Patents by Inventor Lars Wilko Sommer
Lars Wilko Sommer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11404728Abstract: A system includes a first optical sensor sensitive to both a parameter of interest, Parameter1, and at least one confounding parameter, Parameter2 and a second optical sensor sensitive only to the confounding parameter. Measurement circuitry measures M1 in response to light scattered by the first optical sensor, where M1=value of Parameter1+K*value of Parameter2. The measurement circuitry also measures M2 in response to light scattered by the second optical sensor, where M2=value of Parameter2. Compensation circuitry determines a compensation factor, K, for the confounding parameter based on measurements of M1 and M2 taken over multiple load/unload cycles or over one or more thermal cycles. The compensation factor is used to determine the parameter of interest.Type: GrantFiled: November 30, 2020Date of Patent: August 2, 2022Assignee: PALO ALTO RESEARCH CENTER INCORPORATEDInventors: Anurag Ganguli, Julian Schwartz, Ajay Raghavan, Peter Kiesel, Bhaskar Saha, Saroj Sahu, Lars Wilko Sommer
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Publication number: 20210167427Abstract: A system includes a first optical sensor sensitive to both a parameter of interest, Parameter1, and at least one confounding parameter, Parameter2 and a second optical sensor sensitive only to the confounding parameter. Measurement circuitry measures M1 in response to light scattered by the first optical sensor, where M1=value of Parameter1+K*value of Parameter2. The measurement circuitry also measures M2 in response to light scattered by the second optical sensor, where M2=value of Parameter2. Compensation circuitry determines a compensation factor, K, for the confounding parameter based on measurements of M1 and M2 taken over multiple load/unload cycles or over one or more thermal cycles. The compensation factor is used to determine the parameter of interest.Type: ApplicationFiled: November 30, 2020Publication date: June 3, 2021Inventors: Anurag Ganguli, Julian Schwartz, Ajay Raghavan, Peter Kiesel, Bhaskar Saha, Saroj Sahu, Lars Wilko Sommer
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Patent number: 10854932Abstract: A system includes a first optical sensor sensitive to both a parameter of interest, Parameter1, and at least one confounding parameter, Parameter2 and a second optical sensor sensitive only to the confounding parameter. Measurement circuitry measures M1 in response to light scattered by the first optical sensor, where M1=value of Parameter1+K*value of Parameter2. The measurement circuitry also measures M2 in response to light scattered by the second optical sensor, where M2=value of Parameter2. Compensation circuitry determines a compensation factor, K, for the confounding parameter based on measurements of M1 and M2 taken over multiple load/unload cycles or over one or more thermal cycles. The compensation factor is used to determine the parameter of interest.Type: GrantFiled: July 28, 2015Date of Patent: December 1, 2020Assignee: Palo Alto Research Center IncorporatedInventors: Anurag Ganguli, Julian Schwartz, Ajay Raghavan, Peter Kiesel, Bhaskar Saha, Saroj Sahu, Lars Wilko Sommer
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Patent number: 10777855Abstract: A battery includes a folded bicell battery stack with an embedded fiber optic cable and sensor. A cell casing encloses the bicell stack with at least one fiber optic cable is embedded within the battery. The fiber optic cable includes an internal portion disposed within the cell casing and having at least one optical sensor disposed thereon. An external portion of the fiber optic cable protrudes from the casing. A sealing gasket is disposed at least partially around the fiber optic cable and between the cell sealing edges at a point of entry of the fiber optic cable into the battery.Type: GrantFiled: September 3, 2019Date of Patent: September 15, 2020Assignee: Palo Alto Research Center IncorporatedInventors: Ajay Raghavan, Peter Kiesel, Lars Wilko Sommer, Bhaskar Saha, Saroj Sahu, Alexander Lochbaum, Tobias Staudt, Chang-Jun Bae, Mohamed Alamgir, Hoe Jin Hah, Bokkyu Choi, Gyu-Ok Hwang, Geun-Chang Chung
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Publication number: 20200006818Abstract: A battery includes a folded bicell battery stack with an embedded fiber optic cable and sensor. A cell casing encloses the bicell stack with at least one fiber optic cable is embedded within the battery. The fiber optic cable includes an internal portion disposed within the cell casing and having at least one optical sensor disposed thereon. An external portion of the fiber optic cable protrudes from the casing. A sealing gasket is disposed at least partially around the fiber optic cable and between the cell sealing edges at a point of entry of the fiber optic cable into the battery.Type: ApplicationFiled: September 3, 2019Publication date: January 2, 2020Inventors: Ajay Raghavan, Peter Kiesel, Lars Wilko Sommer, Bhaskar Saha, Saroj Sahu, Alexander Lochbaum, Tobias Staudt, Chang-Jun Bae, Mohamed Alamgir, Hoe Jin Hah, Bokkyu Choi, Gyu-Ok Hwang, Geun-Chang Chung
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Patent number: 10446886Abstract: A battery includes a folded bicell battery stack with an embedded fiber optic cable and sensor. A cell casing encloses the bicell stack with at least one fiber optic cable is embedded within the battery. The fiber optic cable includes an internal portion disposed within the cell casing and having at least one optical sensor disposed thereon. An external portion of the fiber optic cable protrudes from the casing. A sealing gasket is disposed at least partially around the fiber optic cable and between the cell sealing edges at a point of entry of the fiber optic cable into the battery.Type: GrantFiled: July 23, 2014Date of Patent: October 15, 2019Assignee: Palo Alto Research Center IncorporatedInventors: Ajay Raghavan, Peter Kiesel, Lars Wilko Sommer, Bhaskar Saha, Saroj Sahu, Alexander Lochbaum, Tobias Staudt, Chang-Jun Bae, Mohamed Alamgir, Hoe Jin Hah, Bokkyu Choi, Gyu-Ok Hwang, Geun-Chang Chung
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Patent number: 9583796Abstract: A method for determining an operating state (e.g., state-of-charge or state-of-health) and/or generating management (charge/discharge) control information in a system including an electrochemical energy device (EED, e.g., a rechargeable Li-ion battery, supercapacitor or fuel cell) that uses optical sensors to detect the intercalation stage change events occurring in the EED. The externally or internally mounted optical sensors measure operating parameter (e.g., strain and/or temperature) changes of the EED during charge/recharge cycling, and transmit measured parameter data using light signals sent over optical fibers to a detector/converter. A processor then analyzes the measured parameter data, e.g., using a model-based estimation process, to detect intercalation stage changes (i.e., crystalline structure changes caused by migration of guest species, such as Li-ions, between the EED's anode and cathode), and generates the operating state and charge/discharge control information based the analysis.Type: GrantFiled: April 1, 2014Date of Patent: February 28, 2017Assignee: PALO ALTO RESEARCH CENTER INCORPORATEDInventors: Bhaskar Saha, Ajay Raghavan, Peter Kiesel, Lars Wilko Sommer, Alexander Lochbaum, Tobias Staudt, Saroj Kumar Sahu, Anurag Ganguli
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Publication number: 20170033414Abstract: A system includes a first optical sensor sensitive to both a parameter of interest, Parameter1, and at least one confounding parameter, Parameter2 and a second optical sensor sensitive only to the confounding parameter. Measurement circuitry measures M1 in response to light scattered by the first optical sensor, where M1=value of Parameter1+K*value of Parameter2. The measurement circuitry also measures M2 in response to light scattered by the second optical sensor, where M2=value of Parameter2. Compensation circuitry determines a compensation factor, K, for the confounding parameter based on measurements of M1 and M2 taken over multiple load/unload cycles or over one or more thermal cycles. The compensation factor is used to determine the parameter of interest.Type: ApplicationFiled: July 28, 2015Publication date: February 2, 2017Inventors: Anurag Ganguli, Julian Schwartz, Ajay Raghavan, Peter Kiesel, Bhaskar Saha, Saroj Sahu, Lars Wilko Sommer
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Patent number: 9553465Abstract: A battery management system includes one or more fiber optic sensors configured to be disposed within an electrochemical battery. Each fiber optic sensor is capable of receiving input light and providing output light that varies based on the input light and an amount of free or dissolved gas present within the battery. A detector detects the output light and generates an electrical detector signal in response to the output light. Battery management circuitry determines the state of the battery based at least in part on the detector signal.Type: GrantFiled: April 21, 2014Date of Patent: January 24, 2017Assignee: PALO ALTO RESEARCH CENTER INCORPORATEDInventors: Ajay Raghavan, Peter Kiesel, Alexander Lochbaum, Bhaskar Saha, Lars Wilko Sommer, Tobias Staudt
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Publication number: 20160028129Abstract: A battery includes a folded bicell battery stack with an embedded fiber optic cable and sensor. A cell casing encloses the bicell stack with at least one fiber optic cable is embedded within the battery. The fiber optic cable includes an internal portion disposed within the cell casing and having at least one optical sensor disposed thereon. An external portion of the fiber optic cable protrudes from the casing. A sealing gasket is disposed at least partially around the fiber optic cable and between the cell sealing edges at a point of entry of the fiber optic cable into the battery.Type: ApplicationFiled: July 23, 2014Publication date: January 28, 2016Inventors: Ajay Raghavan, Peter Kiesel, Lars Wilko Sommer, Bhaskar Saha, Saroj Sahu, Alexander Lochbaum, Tobias Staudt, Chang-Jun Bae, Mohamed Alamgir, Hoe Jin Hah, Bokkyu Choi, Gyu-Ok Hwang, Geun-Chang Chung
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Patent number: 9209494Abstract: A system includes utilizes optical sensors arranged within or on portions of an electrochemical energy device (e.g., a rechargeable Li-ion battery, supercapacitor or fuel cell) to measure operating parameters (e.g., mechanical strain and/or temperature) of the electrochemical energy device during charge/recharge cycling. The measured parameter data is transmitted by way of light signals along optical fibers to a controller, which converts the light signals to electrical data signal using a light source/analyzer. A processor then extracts temperature and strain data features from the data signals, and utilizes a model-based process to detect intercalation stage changes (i.e., characteristic crystalline structure changes caused by certain concentrations of guest species, such as Li-ions, within the electrode material of the electrochemical energy device) indicated by the data features. The detected intercalation stage changes are used to generate highly accurate operating state information (e.g.Type: GrantFiled: April 1, 2014Date of Patent: December 8, 2015Assignee: Palo Alto Research Center IncorporatedInventors: Peter Kiesel, Lars Wilko Sommer, Ajay Raghavan, Bhaskar Saha, Tobias Staudt, Alexander Lochbaum
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Patent number: 9201000Abstract: Sensor material is arranged to interact with input light and to asymmetrically alter a spectral distribution of the input light in response to presence of an external stimulus. A detector is configured to sense the altered input light and to generate at least one electrical signal comprising information about a shift in the centroid of a spectral distribution of the altered input light relative to a centroid of the spectral distribution of the input light.Type: GrantFiled: December 27, 2013Date of Patent: December 1, 2015Assignee: Palo Alto Research Center IncorporatedInventors: Peter Kiesel, Alexander Lochbaum, Ajay Raghavan, Bhaskar Saha, Tobias Staudt, Lars Wilko Sommer
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Publication number: 20150303723Abstract: A battery management system includes one or more fiber optic sensors configured to be disposed within an electrochemical battery. Each fiber optic sensor is capable of receiving input light and providing output light that varies based on the input light and an amount of free or dissolved gas present within the battery. A detector detects the output light and generates an electrical detector signal in response to the output light. Battery management circuitry determines the state of the battery based at least in part on the detector signal.Type: ApplicationFiled: April 21, 2014Publication date: October 22, 2015Inventors: Ajay Raghavan, Peter Kiesel, Alexander Lochbaum, Bhaskar Saha, Lars Wilko Sommer, Tobias Staudt
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Publication number: 20150280290Abstract: A method for determining an operating state (e.g., state-of-charge or state-of-health) and/or generating management (charge/discharge) control information in a system including an electrochemical energy device (EED, e.g., a rechargeable Li-ion battery, supercapacitor or fuel cell) that uses optical sensors to detect the intercalation stage change events occurring in the EED. The externally or internally mounted optical sensors measure operating parameter (e.g., strain and/or temperature) changes of the EED during charge/recharge cycling, and transmit measured parameter data using light signals sent over optical fibers to a detector/converter. A processor then analyzes the measured parameter data, e.g., using a model-based estimation process, to detect intercalation stage changes (i.e., crystalline structure changes caused by migration of guest species, such as Li-ions, between the EED's anode and cathode), and generates the operating state and charge/discharge control information based the analysis.Type: ApplicationFiled: April 1, 2014Publication date: October 1, 2015Applicant: Palo Alto Research Center IncorporatedInventors: Bhaskar Saha, Ajay Raghavan, Peter Kiesel, Lars Wilko Sommer, Alexander Lochbaum, Tobias Staudt, Saroj Kumar Sahu, Anurag Ganguli
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Publication number: 20150185139Abstract: Sensor material is arranged to interact with input light and to asymmetrically alter a spectral distribution of the input light in response to presence of an external stimulus. A detector is configured to sense the altered input light and to generate at least one electrical signal comprising information about a shift in the centroid of a spectral distribution of the altered input light relative to a centroid of the spectral distribution of the input light.Type: ApplicationFiled: December 27, 2013Publication date: July 2, 2015Inventors: Peter Kiesel, Alexander Lochbaum, Ajay Raghavan, Bhaskar Saha, Tobias Staudt, Lars Wilko Sommer
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Publication number: 20140203783Abstract: A system includes utilizes optical sensors arranged within or on portions of an electrochemical energy device (e.g., a rechargeable Li-ion battery, supercapacitor or fuel cell) to measure operating parameters (e.g., mechanical strain and/or temperature) of the electrochemical energy device during charge/recharge cycling. The measured parameter data is transmitted by way of light signals along optical fibers to a controller, which converts the light signals to electrical data signal using a light source/analyzer. A processor then extracts temperature and strain data features from the data signals, and utilizes a model-based process to detect intercalation stage changes (i.e., characteristic crystalline structure changes caused by certain concentrations of guest species, such as Li-ions, within the electrode material of the electrochemical energy device) indicated by the data features. The detected intercalation stage changes are used to generate highly accurate operating state information (e.g.Type: ApplicationFiled: April 1, 2014Publication date: July 24, 2014Applicant: Palo Alto Research Center IncorporatedInventors: Peter Kiesel, Lars Wilko Sommer, Ajay Raghavan, Bhaskar Saha, Tobias Staudt, Alexander Lochbaum