Patents by Inventor Murali Ramasubramanian
Murali Ramasubramanian 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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Publication number: 20190260067Abstract: An electrode structure for use in an energy storage device comprising a population of electrodes, a population of counter-electrodes and a microporous separator separating members of the electrode population from members of the counter-electrode population. Each member of the electrode population comprises an electrode active material layer and an electrode current conductor layer, and each member of the electrode population has a bottom, a top, a length LE, a width WE and a height HE, wherein the ratio of LE to each of WE and HE is at least 5:1, the ratio of HE to WE is between 0.4:1 and 1000:1, and the electrode current collector layer of each member of the electrode population has a length LC that is measured in the same direction as and is at least 50% of length LE.Type: ApplicationFiled: July 30, 2018Publication date: August 22, 2019Inventors: Harrold Jones Rust, III, Ashok Lahiri, Murali Ramasubramanian, Robert M. Spotnitz, Robert A. Cole, Gunther Koblmiller, Nirav Shah, Brian E. Brusca, Christopher G. Castledine, Laurie J. Lauchlan, James D. Wilcox
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Publication number: 20190221878Abstract: A energy storage device for cycling between a charged state and a discharged state, the energy storage device including an enclosure, an electrode assembly and a non-aqueous liquid electrolyte within the enclosure, and a constraint that maintains a pressure on the electrode assembly as the energy storage device is cycled between the charged and the discharged states.Type: ApplicationFiled: March 25, 2019Publication date: July 18, 2019Inventors: Robert S. BUSACCA, Ashok LAHIRI, Murali RAMASUBRAMANIAN, Bruno A. VALDES, Gardner Cameron DALES, Christopher J. SPINDT, Geoffrey Matthew HO, Harrold J. RUST, III, James D. WILCOX, John F. VARNI, Kim Han LEE, Nirav S. SHAH, Richard J. CONTRERAS, Lynn VAN ERDEN, Ken S. MATSUBAYASHI, Jeremie J. DALTON
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Publication number: 20190207264Abstract: A secondary battery for cycling between a charged and a discharged state, wherein a 2D map of the median vertical position of the first opposing vertical end surface of the electrode active material in the X-Z plane, along the length LE of the electrode active material layer, traces a first vertical end surface plot, EVP1, a 2D map of the median vertical position of the first opposing vertical end surface of the counter-electrode active material layer in the X-Z plane, along the length LC of the counter-electrode active material layer, traces a first vertical end surface plot, CEVP1, wherein for at least 60% of the length Lc of the first counter-electrode active material layer (i) the absolute value of a separation distance, SZ1, between the plots EVP1 and CEVP1 measured in the vertical direction is 1000 ?m?|SZ1|?5 ?m.Type: ApplicationFiled: January 25, 2019Publication date: July 4, 2019Inventors: Robert S. BUSACCA, Ashok LAHIRI, Murali RAMASUBRAMANIAN, Bruno A. VALDES, Gardner Cameron DALES, Christopher J. SPINDT, Geoffrey Matthew HO, Harrold J. RUST, III, James D. WILCOX, John F. VARNI, Kim Han LEE, Nirav S. SHAH, Richard J. CONTRERAS, Lynn VAN ERDEN, Ken S. MATSUBAYASHI, Jeremie J. DALTON, Jason Newton HOWARD, Robert Keith ROSEN
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Publication number: 20190148695Abstract: An electrode structure for use in an energy storage device, the electrode structure comprising a population of electrodes, a population of counter-electrodes and an electrically insulating material layer separating members of the electrode population from members of the counter-electrode population, each member of the electrode population having a longitudinal axis AE that is surrounded by the electrically insulating separator layer.Type: ApplicationFiled: June 4, 2018Publication date: May 16, 2019Inventors: Murali RAMASUBRAMANIAN, Michael ARMSTRONG, Brian E. BRUSCA, Vladimir DIOUMAEV, Gunther A. KOBLMILLER, Ashok LAHIRI, Laurie J. LAUCHLAN, Harrold J. RUST, III, Nirav S. SHAH, Robert M. SPOTNITZ, James D. WILCOX
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Patent number: 10283807Abstract: A energy storage device for cycling between a charged state and a discharged state, the energy storage device including an enclosure, an electrode assembly and a non-aqueous liquid electrolyte within the enclosure, and a constraint that maintains a pressure on the electrode assembly as the energy storage device is cycled between the charged and the discharged states.Type: GrantFiled: May 13, 2016Date of Patent: May 7, 2019Assignee: Enovix CorporationInventors: Robert S. Busacca, Ashok Lahiri, Murali Ramasubramanian, Bruno A. Valdes, Gardner Cameron Dales, Christopher J. Spindt, Geoffrey Matthew Ho, Harrold J. Rust, III, James D. Wilcox, John F. Varni, Kim Han Lee, Nirav S. Shah, Richard J. Contreras, Lynn Van Erden, Ken S. Matsubayashi, Jeremie J. Dalton
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Patent number: 10256500Abstract: Various methods and apparatus relating to three-dimensional battery structures and methods of manufacturing them are disclosed and claimed. In certain embodiments, a three-dimensional battery comprises a battery enclosure, and a first structural layer within the battery enclosure, where the first structural layer has a first surface, and a first plurality of conductive protrusions extend from the first surface. A first plurality of electrodes is located within the battery enclosure, where the first plurality of electrodes includes a plurality of cathodes and a plurality of anodes, and wherein the first plurality of electrodes includes a second plurality of electrodes selected from the first plurality of electrodes, each of the second plurality of electrodes being in contact with the outer surface of one of said first plurality of conductive protrusions. Some embodiments relate to processes of manufacturing energy storage devices with or without the use of a backbone structure or layer.Type: GrantFiled: September 8, 2017Date of Patent: April 9, 2019Assignee: Enovix CorporationInventors: Harrold J. Rust, III, Ashok Lahiri, Murali Ramasubramanian, Robert M. Spotnitz
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Patent number: 10256507Abstract: A secondary battery for cycling between a charged and a discharged state, wherein a 2D map of the median vertical position of the first opposing vertical end surface of the electrode active material in the X-Z plane, along the length LE of the electrode active material layer, traces a first vertical end surface plot, EVP1, a 2D map of the median vertical position of the first opposing vertical end surface of the counter-electrode active material layer in the X-Z plane, along the length LC of the counter-electrode active material layer, traces a first vertical end surface plot, CEVP1, wherein for at least 60% of the length Lc of the first counter-electrode active material layer (i) the absolute value of a separation distance, SZ1, between the plots EVP1 and CEVP1 measured in the vertical direction is 1000 ?m?|SZ1|?5 ?m.Type: GrantFiled: February 6, 2018Date of Patent: April 9, 2019Assignee: ENOVIX CORPORATIONInventors: Robert S. Busacca, Ashok Lahiri, Murali Ramasubramanian, Bruno A. Valdes, Gardner Cameron Dales, Christopher J. Spindt, Geoffrey Matthew Ho, Harrold J. Rust, III, James D. Wilcox, John F. Varni, Kim Han Lee, Nirav S. Shah, Richard J. Contreras, Lynn Van Erden, Ken S. Matsubayashi, Jeremie J. Dalton, Jason Newton Howard, Robert Keith Rosen
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Patent number: 10177400Abstract: A secondary battery is provided for cycling between a charged and a discharged state, the secondary battery including a battery enclosure, an electrode assembly, carrier ions, a non-aqueous liquid electrolyte within the battery enclosure, and a set of electrode constraints. The set of electrode constraints includes a primary constraint system having first and second primary growth constraints and at least one primary connecting member, the first and second primary growth constraints separated from each other in the longitudinal direction, wherein the primary constraint array restrains growth of the electrode assembly in the longitudinal direction such that any increase in the Feret diameter of the electrode assembly in the longitudinal direction over 20 consecutive cycles of the secondary battery is less than 20%.Type: GrantFiled: February 6, 2018Date of Patent: January 8, 2019Assignee: ENOVIX CORPORATIONInventors: Robert S. Busacca, Ashok Lahiri, Murali Ramasubramanian, Bruno A. Valdes, Gardner Cameron Dales, Christopher J. Spindt, Geoffrey Matthew Ho, Harrold J. Rust, III, James D. Wilcox, John F. Varni, Kim Han Lee, Nirav S. Shah, Richard J. Contreras, Lynn Van Erden, Vladimir Dioumaev
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Patent number: 10038214Abstract: An electrode structure for use in an energy storage device comprising a population of electrodes, a population of counter-electrodes and a microporous separator separating members of the electrode population from members of the counter-electrode population. Each member of the electrode population comprises an electrode active material layer and an electrode current conductor layer, and each member of the electrode population has a bottom, a top, a length LE, a width WE and a height HE, wherein the ratio of LE to each of WE and HE is at least 5:1, the ratio of HE to WE is between 0.4:1 and 1000:1, and the electrode current collector layer of each member of the electrode population has a length LC that is measured in the same direction as and is at least 50% of length LE.Type: GrantFiled: April 17, 2017Date of Patent: July 31, 2018Assignee: ENOVIX CORPORATIONInventors: Harrold Jones Rust, III, Ashok Lahiri, Murali Ramasubramanian, Robert M. Spotnitz, Robert A. Cole, Gunther Koblmiller, Nirav Shah, Brian E. Brusca, Christopher G. Castledine, Laurie J. Lauchlan, James D. Wilcox
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Patent number: 10020514Abstract: An electrochemical stack comprising carrier ions, an anode comprising an anode active material layer, a cathode comprising a cathode active material layer, a separator between the anode and the cathode comprising a porous dielectric material and a non-aqueous electrolyte, and an ionically permeable conductor layer located between the separator and an electrode active material layer.Type: GrantFiled: May 18, 2016Date of Patent: July 10, 2018Assignee: ENOVIX CORPORATIONInventors: Murali Ramasubramanian, Robert M. Spotnitz, Nirav S. Shah, Ashok Lahiri, Christopher G. Castledine, James D. Wilcox, Michael J. Armstrong, Robert A. Cole, Brian E. Brusca, Harrold J. Rust, III, Ken S. Matsubayashi, Laurie J. Lauchlan, Gunther A. Koblmiller
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Publication number: 20180166735Abstract: A secondary battery is provided for cycling between a charged and a discharged state, the secondary battery including a battery enclosure, an electrode assembly, carrier ions, a non-aqueous liquid electrolyte within the battery enclosure, and a set of electrode constraints. The set of electrode constraints includes a primary constraint system having first and second primary growth constraints and at least one primary connecting member, the first and second primary growth constraints separated from each other in the longitudinal direction, wherein the primary constraint array restrains growth of the electrode assembly in the longitudinal direction such that any increase in the Feret diameter of the electrode assembly in the longitudinal direction over 20 consecutive cycles of the secondary battery is less than 20%.Type: ApplicationFiled: February 6, 2018Publication date: June 14, 2018Inventors: Robert S. BUSACCA, Ashok LAHIRI, Murali RAMASUBRAMANIAN, Bruno A. VALDES, Gardner Cameron DALES, Christopher J. SPINDT, Geoffrey Matthew HO, Harrold J. RUST, III, James D. WILCOX, John F. VARNI, Kim Han LEE, Nirav S. SHAH, Richard J. CONTRERAS, Lynn VAN ERDEN, Vladimir DIOUMAEV
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Patent number: 9991490Abstract: An electrode structure for use in an energy storage device, the electrode structure comprising a population of electrodes, a population of counter-electrodes and an electrically insulating material layer separating members of the electrode population from members of the counter-electrode population, each member of the electrode population having a longitudinal axis AE that is surrounded by the electrically insulating separator layer.Type: GrantFiled: March 13, 2014Date of Patent: June 5, 2018Assignee: ENOVIX CORPORATIONInventors: Murali Ramasubramanian, Michael Armstrong, Brian E. Brusca, Vladimir Dioumaev, Gunther A. Koblmiller, Ashok Lahiri, Laurie J. Lauchlan, Harrold J. Rust, III, Nirav S. Shah, Robert M. Spotnitz, James D. Wilcox
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Publication number: 20180151920Abstract: A method is provided for activating a secondary battery having a negative electrode, a positive electrode, and a microporous separator between the negative and positive electrodes permeated with carrier-ion containing electrolyte, the negative electrode having anodically active silicon or an alloy thereof. The method includes transferring carrier ions from the positive electrode to the negative electrode to at least partially charge the secondary battery, and transferring carrier ions from an auxiliary electrode to the positive electrode, to provide the secondary battery with a positive electrode end of discharge voltage Vpos,eod and a negative electrode end of discharge voltage Vneg,eod when the cell is at a predefined Vcell,eod value, the value of Vpos,eod corresponding to a voltage at which the state of charge of the positive electrode is at least 95% of its coulombic capacity and Vneg,eod is at least 0.4 V (vs Li) but less than 0.9 V (vs Li).Type: ApplicationFiled: May 6, 2016Publication date: May 31, 2018Inventors: Christopher G. CASTLEDINE, David T. FOUCHARD, Jonathan C. DOAN, Christopher J. SPINDT, Robert M. SPOTNIZ, James D. WILCOX, Ashok LAHIRI, Murali RAMASUBRAMANIAN
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Publication number: 20180145367Abstract: A energy storage device for cycling between a charged state and a discharged state, the energy storage device including an enclosure, an electrode assembly and a non-aqueous liquid electrolyte within the enclosure, and a constraint that maintains a pressure on the electrode assembly as the energy storage device is cycled between the charged and the discharged states.Type: ApplicationFiled: May 13, 2016Publication date: May 24, 2018Inventors: Robert S. BUSACCA, Ashok LAHIRI, Murali RAMASUBRAMANIAN, Bruno A. VALDES, Gardner Cameron DALES, Christopher J. SPINDT, Geoffrey Matthew HO, Harrold J. RUST, III, James D. WILCOX, John F. VARNI, Kim Han LEE, Nirav S. SHAH, Richard J. CONTRERAS, Lynn VAN ERDEN, Ken S. MATSUBAYASHI, Jeremie J. DALTON
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Publication number: 20180040876Abstract: A structure for use in an energy storage device, the structure comprising a backbone system extending generally perpendicularly from a reference plane, and a population of microstructured anodically active material layers supported by the lateral surfaces of the backbones, each of the microstructured anodically active material layers having a void volume fraction of at least 0.1 and a thickness of at least 1 micrometer.Type: ApplicationFiled: October 17, 2017Publication date: February 8, 2018Inventors: Ashok LAHIRI, Robert M. SPOTNITZ, Nirav S. SHAH, Murali RAMASUBRAMANIAN, Harrold J. RUST, III, James D. WILCOX, Michael J. ARMSTRONG, Brian E. BRUSCA, Christopher G. CASTLEDINE, Laurie J. LAUCHLAN
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Publication number: 20180013166Abstract: Various methods and apparatus relating to three-dimensional battery structures and methods of manufacturing them are disclosed and claimed. In certain embodiments, a three-dimensional battery comprises a battery enclosure, and a first structural layer within the battery enclosure, where the first structural layer has a first surface, and a first plurality of conductive protrusions extend from the first surface. A first plurality of electrodes is located within the battery enclosure, where the first plurality of electrodes includes a plurality of cathodes and a plurality of anodes, and wherein the first plurality of electrodes includes a second plurality of electrodes selected from the first plurality of electrodes, each of the second plurality of electrodes being in contact with the outer surface of one of said first plurality of conductive protrusions. Some embodiments relate to processes of manufacturing energy storage devices with or without the use of a backbone structure or layer.Type: ApplicationFiled: September 8, 2017Publication date: January 11, 2018Inventors: Harrold J. RUST, III, Ashok LAHIIRI, Murali RAMASUBRAMANIAN, Robert M. SPOTNITZ
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Patent number: 9806331Abstract: A structure for use in an energy storage device, the structure comprising a backbone system extending generally perpendicularly from a reference plane, and a population of microstructured anodically active material layers supported by the lateral surfaces of the backbones, each of the microstructured anodically active material layers having a void volume fraction of at least 0.1 and a thickness of at least 1 micrometer.Type: GrantFiled: April 20, 2016Date of Patent: October 31, 2017Assignee: ENOVIX CORPORATIONInventors: Ashok Lahiri, Robert M. Spotnitz, Nirav S. Shah, Murali Ramasubramanian, Harrold J. Rust, III, James D. Wilcox, Michael J. Armstrong, Brian E. Brusca, Christopher G. Castledine, Laurie J. Lauchlan
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Patent number: 9761901Abstract: Various methods and apparatus relating to three-dimensional battery structures and methods of manufacturing them are disclosed and claimed. In certain embodiments, a three-dimensional battery comprises a battery enclosure, and a first structural layer within the battery enclosure, where the first structural layer has a first surface, and a first plurality of conductive protrusions extend from the first surface. A first plurality of electrodes is located within the battery enclosure, where the first plurality of electrodes includes a plurality of cathodes and a plurality of anodes, and wherein the first plurality of electrodes includes a second plurality of electrodes selected from the first plurality of electrodes, each of the second plurality of electrodes being in contact with the outer surface of one of said first plurality of conductive protrusions. Some embodiments relate to processes of manufacturing energy storage devices with or without the use of a backbone structure or layer.Type: GrantFiled: March 4, 2015Date of Patent: September 12, 2017Assignee: Enovix CorporationInventors: Harrold J. Rust, III, Ashok Lahiiri, Murali Ramasubramanian, Robert M. Spotnitz
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Publication number: 20170222255Abstract: An electrode structure for use in an energy storage device comprising a population of electrodes, a population of counter-electrodes and a microporous separator separating members of the electrode population from members of the counter-electrode population. Each member of the electrode population comprises an electrode active material layer and an electrode current conductor layer, and each member of the electrode population has a bottom, a top, a length LE, a width WE and a height HE, wherein the ratio of LE to each of WE and HE is at least 5:1, the ratio of HE to WE is between 0.4:1 and 1000:1, and the electrode current collector layer of each member of the electrode population has a length LC that is measured in the same direction as and is at least 50% of length LE.Type: ApplicationFiled: April 17, 2017Publication date: August 3, 2017Inventors: Harrold Jones Rust, III, Ashok Lahiri, Murali Ramasubramanian, Robert M. Spotnitz, Robert A. Cole, Gunther Koblmiller, Nirav Shah, Brian E. Brusca, Christopher G. Castledine, Laurie J. Lauchlan, James D. Wilcox
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Patent number: 9660292Abstract: An electrode structure for use in an energy storage device comprising a population of electrodes, a population of counter-electrodes and a microporous separator separating members of the electrode population from members of the counter-electrode population. Each member of the electrode population comprises an electrode active material layer and an electrode current conductor layer, and each member of the electrode population has a bottom, a top, a length LE, a width WE and a height HE, wherein the ratio of LE to each of WE and HE is at least 5:1, the ratio of HE to WE is between 0.4:1 and 1000:1, and the electrode current collector layer of each member of the electrode population has a length LC that is measured in the same direction as and is at least 50% of length LE.Type: GrantFiled: August 1, 2013Date of Patent: May 23, 2017Assignee: ENOVIX CORPORATIONInventors: Harrold Jones Rust, III, Ashok Lahiri, Murali Ramasubramanian, Robert M. Spotnitz, Robert A. Cole, Gunther Koblmiller, Nirav Shah, Brian E. Brusca, Christopher G. Castledine, Laurie J. Lauchlan, James D. Wilcox