Patents by Inventor Arnaud Delaille
Arnaud Delaille 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: 11486932Abstract: A method for managing a charge state of a battery left to rest and experiencing losses of capacity over time, includes the following stages repeated at regular time intervals: determining the losses of capacity experienced by the battery during a time interval; determining a target value of the charge state; on the basis of the losses of capacity experienced by the battery, a predetermined minimum charge quantity and a maximum discharge capacity of the battery, the target value of the charge state being strictly less than 100%; and adjusting the charge state of the battery to the target value.Type: GrantFiled: December 18, 2018Date of Patent: November 1, 2022Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVESInventor: Arnaud Delaille
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Publication number: 20210080505Abstract: A method for managing a charge state of a battery left to rest and experiencing losses of capacity over time, includes the following stages repeated at regular time intervals: determining the losses of capacity experienced by the battery during a time interval; determining a target value of the charge state; on the basis of the losses of capacity experienced by the battery, a predetermined minimum charge quantity and a maximum discharge capacity of the battery, the target value of the charge state being strictly less than 100%; and adjusting the charge state of the battery to the target value.Type: ApplicationFiled: December 18, 2018Publication date: March 18, 2021Inventor: Arnaud DELAILLE
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Patent number: 9075117Abstract: Method for calibration of an electrochemical accumulator, characterized in that it comprises a phase (P2) for modelling the energy (Ed) available in the electrochemical accumulator representing the energy that would be obtained when the accumulator is completely discharged based on a given discharge power and on a given initial state of energy.Type: GrantFiled: June 30, 2010Date of Patent: July 7, 2015Assignee: Commissariat a L'Energies Atomique et aux Energies AlternativesInventors: Kelli Mamadou, Arnaud DeLaille
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Patent number: 8988045Abstract: The method for charging or discharging a battery comprises measurement of the voltage at the terminals of the battery and comparison of the measured voltage with an end of charging or discharging voltage threshold. The method also comprises measurement of a temperature representative of the temperature of the battery and measurement of the current flowing in the battery to form a pair of measurements. The voltage threshold is then determined according to the pair of measurements. Charging or discharging of the battery is stopped when the voltage threshold is reached.Type: GrantFiled: October 26, 2010Date of Patent: March 24, 2015Assignee: Commissariat a l'Energie Atomique et aux Energies AlternativesInventors: Jean-Marie Klein, Arnaud Delaille, Sylvie Genies
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Patent number: 8536836Abstract: The method for determining the end-of-discharge voltage threshold of a rechargeable battery includes discharging the battery up to a predefined end-of-discharge voltage threshold, at least partially charging the battery, determining, while at least partially charging the battery, an electrical parameter representative of a coup de fouet effect, which coup de fouet effect appears during the partial charging, comparing said electrical parameter with a predetermined characteristic and updating the end-of-discharge voltage threshold to be used for subsequent discharging according to the result of said comparison.Type: GrantFiled: December 4, 2007Date of Patent: September 17, 2013Assignee: Commissariat a l'Energie AtomiqueInventors: Arnaud Delaille, Marion Perrin
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Publication number: 20130169211Abstract: Method for charging an electric battery with a given charge capacity, the electric battery feeding a charge and the electric battery being charged by an electrical energy source, wherein the method defining a first level of charge reference value lower than the charge capacity of the battery and a step of charging the electric battery until the first level of charge reference value is reached.Type: ApplicationFiled: August 29, 2011Publication date: July 4, 2013Inventors: David Brun-Buisson, Arnaud Delaille, Jean-Marie Klein
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Publication number: 20130069660Abstract: The invention is a method for estimating the internal state of a system for the electrochemical storage of electrical energy, such as a battery. For various internal states of batteries of the same type as a battery being analysed, impedance measurements are carried out by adding an electrical signal to the current passing through the batteries. Then, an RC circuit is used to model the impedances. Next, a relationship is calibrated between the SoC (and/or the SoH) and the parameters of the RC circuit using multivariate statistical analysis. A measurement of the impedance of the battery under analysis is carried out which is modeled using the RC circuit. Finally, the relationship of the equivalent electric circuit defined for the battery being analysed is used to estimate the internal state of that battery.Type: ApplicationFiled: February 11, 2010Publication date: March 21, 2013Inventors: Julien Bernard, Arnaud Delaille, François Huet, Jean-Marie Klein, Rémy Mingant, Valérie Sauvant-Moynot
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Publication number: 20120212184Abstract: The method for charging or discharging a battery comprises measurement of the voltage at the terminals of the battery and comparison of the measured voltage with an end of charging or discharging voltage threshold. The method also comprises measurement of a temperature representative of the temperature of the battery and measurement of the current flowing in the battery to form a pair of measurements. The voltage threshold is then determined according to the pair of measurements. Charging or discharging of the battery is stopped when the voltage threshold is reached.Type: ApplicationFiled: October 26, 2010Publication date: August 23, 2012Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVESInventors: Jean-Marie Klein, Arnaud Delaille, Sylvie Genies
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Publication number: 20120109557Abstract: Method for calibration of an electrochemical accumulator, characterized in that it comprises a phase (P2) for modelling the energy (Ed) available in the electrochemical accumulator representing the energy that would be obtained when the accumulator is completely discharged based on a given discharge power and on a given initial state of energy.Type: ApplicationFiled: June 30, 2010Publication date: May 3, 2012Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVESInventors: Kelli Mamadou, Arnaud Delaille
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Patent number: 8159190Abstract: The method for controlling the end of discharge of a rechargeable battery according to the invention comprises determining the transition frequency of the battery and determining an end-of-discharge criterion of the battery according to said transition frequency. Said end-of-discharge criterion is representative for example of a predetermined maximum value of the slope of the transition frequency. The transition frequency can be determined periodically during use of the battery, discharging being interrupted by regulating means according to said transition frequency.Type: GrantFiled: October 5, 2007Date of Patent: April 17, 2012Assignee: Commissariat a l'Energie AtomiqueInventors: Arnaud Delaille, Marion Perrin
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Patent number: 8134342Abstract: The autonomous system comprises an intermittent power source delivering a direct current. A supercapacitance is connected in parallel with the battery and the power source respectively via a first switch and a second switch. Charging of the battery comprises pulsed current charging managed by a control circuit. During a current pulse, the amplitude of the current and the amplitude of the voltage increase at the terminals of the battery are measured. The dynamic internal resistance of the battery is determined from said amplitudes. A maximum acceptable current threshold is determined according to a maximum voltage threshold, to said dynamic internal resistance and to the no-load voltage at the battery terminals. At the next current pulse, the value of the charging current is limited by controlling the closing time of the second switch.Type: GrantFiled: August 17, 2009Date of Patent: March 13, 2012Assignee: Commissariat a l'Energie AtomiqueInventors: Antoine Labrunie, Arnaud Delaille, Sylvie Genies
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Patent number: 8106632Abstract: The batteries of at least one battery subset are partially and preferably simultaneously charged; during this partial charging, electrical parameters representative of a coup de fouet effect on charging are measured to enable the extent of discharge of each of the batteries of the subset to be analyzed; the batteries are then charged sequentially with an order of priority that depends on the extent of discharge of the different batteries; priority is preferably given to charging the most extensively discharged batteries.Type: GrantFiled: May 11, 2007Date of Patent: January 31, 2012Assignee: Commissariat a l'Energie AtomiqueInventors: Arnaud Delaille, Marion Perrin
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Publication number: 20100066309Abstract: The autonomous system comprises an intermittent power source delivering a direct current. A supercapacitance is connected in parallel with the battery and the power source respectively via a first switch and a second switch. Charging of the battery comprises pulsed current charging managed by a control circuit. During a current pulse, the amplitude of the current and the amplitude of the voltage increase at the terminals of the battery are measured. The dynamic internal resistance of the battery is determined from said amplitudes. A maximum acceptable current threshold is determined according to a maximum voltage threshold, to said dynamic internal resistance and to the no-load voltage at the battery terminals. At the next current pulse, the value of the charging current is limited by controlling the closing time of the second switch.Type: ApplicationFiled: August 17, 2009Publication date: March 18, 2010Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUEInventors: Antoine Labrunie, Arnaud Delaille, Sylvie Genies
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Publication number: 20100060236Abstract: The method for determining the end-of-discharge voltage threshold of a rechargeable battery comprises discharging the battery up to a predefined end-of-discharge voltage threshold, at least partial charging of the battery, determining, during said charging, an electrical parameter representative of a coup de fouet effect on charging, comparing said parameter with a predetermined characteristic and updating, if necessary, the end-of-discharge voltage threshold to be used for subsequent discharging according to the result of said comparison.Type: ApplicationFiled: December 4, 2007Publication date: March 11, 2010Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUEInventors: Arnaud Delaille, Marion Perrin
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Publication number: 20090278502Abstract: The method for controlling the end of discharge of a rechargeable battery according to the invention comprises determining (F1) the transition frequency (FHF) of the battery and determining (F2, F3) an end-of-discharge criterion of the battery according to said transition frequency (FHF). Said end-of-discharge criterion is representative for example of a predetermined maximum value (Pmax) of the slope of the transition frequency (FHF). The transition frequency (FHF) can be determined (F1) periodically during use of the battery, discharging being interrupted (F4) by regulating means according to said transition frequency (FHF).Type: ApplicationFiled: October 5, 2007Publication date: November 12, 2009Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUEInventors: Arnaud Delaille, Marion Perrin
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Publication number: 20090072788Abstract: The batteries of at least one battery subset are partially and preferably simultaneously charged; during this partial charging, electrical parameters representative of a coup de fouet effect on charging are measured to enable the extent of discharge of each of the batteries of the subset to be analyzed; the batteries are then charged sequentially with an order of priority that depends on the extent of discharge of the different batteries; priority is preferably given to charging the most extensively discharged batteries.Type: ApplicationFiled: May 11, 2007Publication date: March 19, 2009Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUEInventors: Arnaud Delaille, Marion Perrin