Patents by Inventor Jean-Claude Lepretre
Jean-Claude Lepretre 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: 11784505Abstract: The present invention relates to a method for charging an electrochemical cell of a rechargeable battery with charging pulse control (PL), the pulses (PL) being driven in voltage control mode in the form of voltage steps (Pt) of variable amplitude. According to the invention, the method consists in calculating the value (Ut+1) of each voltage step (Pt+1) with respect to the value (Ut) of the preceding voltage step (Pt) and according to a progression variable representative of the variation in the internal resistance of the cell (d(R)/dt), for a period ending on the preceding step (Pt), with respect to a predetermined tolerated variation threshold (?), where Var=d(R)/dt??. The method applies to high-voltage electric battery charging protocols for electromobility or stationary applications, or portable device batteries, for example.Type: GrantFiled: January 11, 2021Date of Patent: October 10, 2023Assignees: PSA AUTOMOBILES SA, INSTITUT POLYTECHNIQUE DE GRENOBLE, SAFTInventors: Gentien Thorner, Francis Roy, Jean Bernard Douet, Thomas Peuchant, David Herpe, Pierre Xavier Thivel, Jean Claude Leprêtre
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Publication number: 20230208174Abstract: The present invention relates to a method for charging an electrochemical cell of a rechargeable battery with charging pulse control (PL), the pulses (PL) being driven in voltage control mode in the form of voltage steps (Pt) of variable amplitude. According to the invention, the method consists in calculating the value (Ut+1) of each voltage step (Pt+1) with respect to the value (Ut) of the preceding voltage step (Pt) and according to a progression variable representative of the variation in the internal resistance of the cell (d(R)/dt), for a period ending on the preceding step (Pt), with respect to a predetermined tolerated variation threshold (?), where Var=d(R)/dt??. The method applies to high-voltage electric battery charging protocols for electromobility or stationary applications, or portable device batteries, for example.Type: ApplicationFiled: January 11, 2021Publication date: June 29, 2023Inventors: Gentien THORNER, Francis ROY, Jean Bernard DOUET, Thomas PEUCHANT, David HERPE, Pierre Xavier THIVEL, Jean Claude LEPRÊTRE
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Publication number: 20230015254Abstract: The disclosure relates to the field of metal ion capture, more particularly of selective capture of nickel Ni(II) ions, by a polymeric compound based on a polymer selected from styrenic polymers and chloropolymers. In the polymeric compound, at least one portion of the monomer units of the polymer is functionalised by the ligand, the ligand including at least one chemical group selected from the glyoxime groups. The glyoxime groups have a strong affinity for the Ni(II) ions, as well as an excellent selectivity vis-à-vis metal ions of chemical properties similar to Ni(II) ions. This ligand thus allows a selective complexation of the Ni(II) ions by the polymeric compound, including in solutions of low concentrations of Ni(II) ions. The polymeric compound according to at least one embodiment of the disclosure is particularly intended for capturing the Ni(II) ions during the electrogalvanising methods as well as for recycling material comprising nickel.Type: ApplicationFiled: December 3, 2020Publication date: January 19, 2023Inventors: Jean-Claude LEPRETRE, Jonathan DESEURE, Fannie ALLOIN, Clémence YVER
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Patent number: 9362059Abstract: An electrochemical generator includes a first electrode covered by a passivation layer having a compound formed by repetition of a pattern of the following formula (7): in which: n is an integer comprised between 1 and 10, preferably between 1 and 4; R1 and R2 are identical or different and chosen independently from the group formed by —CH2—, a cyclic or acyclic, linear or branched alkyl chain; R3 is chosen from the group formed by —CH3, a cyclic or acyclic, linear or branched alkyl chain, and a group of the following formula (8): in which: N is a mono or polycyclic, aromatic hydrocarbonated group chosen from the group formed by phenyl, aryl groups, condensed polyaromatic groups, which may be substituted; R4 is chosen from the group formed by —CH2-, a cyclic or acyclic, linear or branched alkyl chain; and A is identical to or different from A?.Type: GrantFiled: September 19, 2011Date of Patent: June 7, 2016Assignee: COMMISSARIAT À L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVESInventors: Laureline Crepel, Fannie Alloin, Jean-Claude Lepretre, Sebastien Martinet
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Patent number: 9257723Abstract: The invention relates to a diazonium aryl salt devoid of hydroxyl functions of the following general formula (1): X?+N?N-A-R1—(OR2)n—O—R4-A?-N?N+X???(1) in which: n is in a range of from 1 to 10, preferably from 1 to 4, X? represents a counter-ion of the diazonium cation selected from the group consisting of halogenides, BF4—, NO3—, HSO4—, PF6—, CH3COO—, N(SO2CF3)2—, CF3SO3—, CH3SO3—, CF3COO—, (CH3O)(H)PO2—, and N(CN)2—; R1, R2 and R4 are identical or different and are independently selected from the group consisting of —CH2—, a cyclic alkyl group, an acyclic alkyl group, a linear alkyl group, and a branched alkyl group; and A and A? are identical or different and independently represent a mono or polycyclic, aromatic hydrocarbonated group chosen from the group formed by phenyl, aryl groups, condensed polyaromatic groups, which may be substituted.Type: GrantFiled: September 19, 2011Date of Patent: February 9, 2016Assignee: COMMISSARIAT À L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVESInventors: Laureline Crepel, Fannie Alloin, Jean-Claude Lepretre, Sebastien Martinet
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Patent number: 9203080Abstract: A rechargeable metal ion cell comprising: an anode comprising at least one metal; a charge-carrying electrolyte comprising a charge carrying medium and at least one metal salt; and an organic polymer cathode, wherein such cathode comprises at least one N-substituted polyphenothiazine polymer [polymer (P)], such polymer (P) comprising at least one N-substituted phenothiazine recurring unit of formula: wherein R? is an electron-withdrawing group comprising at least one heteroatom selected from the group consisting of O, S, P, and N.Type: GrantFiled: November 16, 2011Date of Patent: December 1, 2015Assignees: Solvay SA, Universite Joseph FourierInventors: Alain Deronzier, Thibault Godet-Bar, Jean-Claude Lepretre, Jean-Yves Sanchez
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Publication number: 20130230771Abstract: A rechargeable metal ion cell comprising: an anode comprising at least one metal; a charge-carrying electrolyte comprising a charge carrying medium and at least one metal salt; and an organic polymer cathode, wherein such cathode comprises at least one N-substituted polyphenothiazine polymer [polymer (P)], such polymer (P) comprising at least one N-substituted phenothiazine recurring unit of formula: wherein R? is an electron-withdrawing group comprising at least one heteroatom selected from the group consisting of O, S, P, and N.Type: ApplicationFiled: November 16, 2011Publication date: September 5, 2013Applicants: UNIVERSITE JOSEPH FOURIER, SOLVAY SAInventors: Alain Deronzier, Thibault Godet-Bar, Jean-Claude Lepretre, Jean-Yves Sanchez
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Publication number: 20130189574Abstract: The invention relates to a diazonium aryl salt devoid of hydroxyl functions of the following general formula (1): X?+N?N-A-R1—(OR2)n—O—R4-A?-N?N+X???(1) in which: n is an integer comprised between 1 and 10, preferably between 1 and 4, X— represents a counter-ion of the diazonium cation chosen from the halogenides, BF4-, NO3-, HSO4-, PF6-, CH3COO—, N(SO2CF3)2-, CF3SO3-, CH3SO3-, CF3COO—, (CH3O)(H)PO2-, N(CN)2-, R1, R2 and R4 are identical or different and chosen independently from the group formed by —CH2-, a cyclic or acyclic, linear or branched alkyl chain and, A? and A? are identical or different and independently represent a mono or polycyclic, aromatic hydrocarbonated group chosen from the group formed by phenyl, aryl groups, condensed polyaromatic groups, which may be substituted.Type: ApplicationFiled: September 19, 2011Publication date: July 25, 2013Applicants: COMMISSARIAT A L' ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, UNIVERSITE JOSEPH FOURIER, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUEInventors: Laureline Crepel, Fannie Alloin, Jean-Claude Lepretre, Sebastien Martinet
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Publication number: 20130177805Abstract: An electrochemical generator includes a first electrode covered by a passivation layer having a compound formed by repetition of a pattern of the following formula (7): in which: n is an integer comprised between 1 and 10, preferably between 1 and 4; R1 and R2 are identical or different and chosen independently from the group formed by —CH2—, a cyclic or acyclic, linear or branched alkyl chain; R3 is chosen from the group formed by —CH3, a cyclic or acyclic, linear or branched alkyl chain, and a group of the following formula (8): in which: N is a mono or polycyclic, aromatic hydrocarbonated group chosen from the group formed by phenyl, aryl groups, condensed polyaromatic groups, which may be substituted; R4 is chosen from the group formed by —CH2-, a cyclic or acyclic, linear or branched alkyl chain; and A is identical to or different from A?.Type: ApplicationFiled: September 19, 2011Publication date: July 11, 2013Applicants: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, UNIVERSITE JOSEPH FOURIER, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUEInventors: Laureline Crepel, Fannie Alloin, Jean-Claude Lepretre, Sebastien Martinet