Patents by Inventor Robert Spotnitz
Robert Spotnitz 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: 9843027Abstract: Certain embodiments of the invention relate to the design of three-dimensional battery cells and their incorporation into battery modules and battery packs. The present invention may be particularly advantageous when incorporated into large battery packs, for example, those used in electric vehicles. The unique architecture of the battery cells of certain embodiments of the invention provides improved thermal performance with significant impact on cycle and calendar life when incorporated into a battery pack. Substantially higher pack energy density for a given cell energy density is provided when compared to a conventional cell. Battery cells can be strung together to form modules and packs with whatever series/parallel arrangement required for a particular application. Cooling, if needed, can be incorporated at the module level rather than the individual die level, as is the case with conventional architectures, dramatically reducing the cost of the system.Type: GrantFiled: October 12, 2010Date of Patent: December 12, 2017Assignee: ENOVIX CORPORATIONInventors: Robert Spotnitz, Ashok Lahiri
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Patent number: 9356271Abstract: 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: January 24, 2012Date of Patent: May 31, 2016Assignee: ENOVIX CORPORATIONInventors: Murali Ramasubramanian, Robert Spotnitz, Nirav Shah, Ashok Lahiri, Christopher Castledine, III, James D. Wilcox, Michael J. Armstrong, Robert A. Cole, Brian Brusca, Harold J. Rust, III, Ken S. Matsubayashi, Laurie J. Lauchlan, Gunther A. Koblmiller
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Patent number: 9166230Abstract: Various three-dimensional battery structures are disclosed, in certain embodiments comprising a battery enclosure and a first plurality of electrodes within the enclosure. The first plurality of electrodes includes a plurality of cathodes and a plurality of anodes. The first plurality of electrodes includes a second plurality of electrodes selected from the first plurality of electrodes. The three-dimensional battery includes a first structural layer within the battery enclosure. Each of the second plurality of electrodes protrudes from the first structural layer. The three-dimensional battery includes a plurality of electrical current-reducing devices within the enclosure. Each of the second plurality of electrodes is coupled to one of the plurality of current-reducing devices.Type: GrantFiled: January 11, 2008Date of Patent: October 20, 2015Assignee: ENOVIX CORPORATIONInventors: Ashok Lahiri, Robert Spotnitz
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Patent number: 8999558Abstract: 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: January 11, 2008Date of Patent: April 7, 2015Assignee: Enovix CorporationInventors: Harrold Jones Rust, III, Ashok Lahiri, Murali Ramasubramanian, Robert Spotnitz
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Publication number: 20140335395Abstract: 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: ApplicationFiled: January 24, 2012Publication date: November 13, 2014Applicant: ENOVIX CORPORATIONInventors: Murali Ramasubramanian, Robert Spotnitz, Nirav Shah, Ashok Lahiri, Christopher Castledine, III, James D. Wilcox, Michael J. Armstrong, Robert A. Cole, Brian Brusca, Harold J. Rust, III, Ken S. Matsubayashi, Laurie J. Lauchlan, Gunther A. Koblmiller
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Patent number: 8841030Abstract: 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: January 24, 2012Date of Patent: September 23, 2014Assignee: Enovix CorporationInventors: Ashok Lahiri, Robert Spotnitz, Nirav 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: 8691450Abstract: A three-dimensional battery having a plurality of non-laminar electrodes including a plurality of cathodes and a plurality of silicon anodes, and an electrolyte solution in fluid contact with the plurality of electrodes, wherein the electrolyte solution includes a selected one of lithium (bis)trifluoromethanesulfonimide (LiTFSI), LiClO4, LiCF3SO3, and LiBOB.Type: GrantFiled: August 5, 2009Date of Patent: April 8, 2014Assignee: Enovix CorporationInventors: Venkat Srinivasan, Robert Spotnitz
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Patent number: 8663730Abstract: Methods to manufacture a three-dimensional battery are disclosed and claimed. A structural layer may be provided. A plurality of electrodes may be fabricated, each electrode protruding from the structural layer. A porous dielectric material may be deposited on the plurality of electrodes.Type: GrantFiled: January 11, 2008Date of Patent: March 4, 2014Assignee: Enovix CorporationInventors: Ashok Lahiri, Murali Ramasubramanian, Robert Spotnitz
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Patent number: 8524395Abstract: The present invention relates to nonaqueous electrolyte secondary batteries and durable anode materials and anodes for use in nonaqueous electrolyte secondary batteries. The present invention also relates to methods for producing these anode materials. In the present invention, a metal-semiconductor alloy layer is formed on an anode material by contacting a portion of the anode material with a displacement solution. The displacement solution contains ions of the metal to be deposited and a dissolution component for dissolving a part of the semiconductor in the anode material. When the anode material is contacted with the displacement solution, the dissolution component dissolves a part of the semiconductor in the anode material thereby providing electrons to reduce the metal ions and deposit the metal on the anode material. After deposition, the anode material and metal are annealed to form a uniform metal-semiconductor alloy layer.Type: GrantFiled: February 15, 2012Date of Patent: September 3, 2013Assignee: Enovix CorporationInventors: Murali Ramasubramanian, Robert Spotnitz
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Publication number: 20130189602Abstract: 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: January 24, 2012Publication date: July 25, 2013Inventors: Ashok Lahiri, Robert Spotnitz, Nirav 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: 20130019468Abstract: A battery includes an anode and a cathode. An electrolyte material is disposed between the anode and the cathode. A separator is disposed between the anode and the cathode. The separator comprises an anodized metal oxide layer having substantially straight and parallel through-pores, wherein the anodized metal oxide of the porous anodized metal oxide layer is selected from the group consisting of aluminum oxide, titanium oxide, zirconium oxide, niobium oxide, tungsten oxide, tantalum oxide, and hafnium oxide.Type: ApplicationFiled: June 6, 2012Publication date: January 24, 2013Applicant: ENOVIX CORPORATIONInventors: Murali RAMASUBRAMANIAN, Robert SPOTNITZ
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Publication number: 20120177993Abstract: The present invention relates to nonaqueous electrolyte secondary batteries and durable anode materials and anodes for use in nonaqueous electrolyte secondary batteries. The present invention also relates to methods for producing these anode materials. In the present invention, a metal-semiconductor alloy layer is formed on an anode material by contacting a portion of the anode material with a displacement solution. The displacement solution contains ions of the metal to be deposited and a dissolution component for dissolving a part of the semiconductor in the anode material. When the anode material is contacted with the displacement solution, the dissolution component dissolves a part of the semiconductor in the anode material thereby providing electrons to reduce the metal ions and deposit the metal on the anode material. After deposition, the anode material and metal are annealed to form a uniform metal-semiconductor alloy layer.Type: ApplicationFiled: February 15, 2012Publication date: July 12, 2012Applicant: ENOVIX CORPORATIONInventors: Murali RAMASUBRAMANIAN, Robert SPOTNITZ
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Publication number: 20120176093Abstract: The present invention includes three-dimensional secondary battery cells comprising an electrolyte, a cathode, an anode, and an auxiliary electrode. The cathode, the anode, and the auxiliary electrode have a surface in contact with the electrolyte. The anode and the cathode are electrolytically coupled. The auxiliary electrode is electrolytically coupled and electrically coupled to at least one of the anode or the cathode. Electrically coupled means directly or indirectly connected in series by wires, traces or other connecting elements. The average distance between the surface of the auxiliary electrode and the surface of the coupled cathode or the coupled anode is between about 1 micron and about 10,000 microns. The average distance means the average of the shortest path for ion transfer from every point on the coupled cathode or anode to the auxiliary electrode.Type: ApplicationFiled: February 15, 2012Publication date: July 12, 2012Inventors: Murali Ramasubramanian, Robert Spotnitz
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Patent number: 8216712Abstract: A battery includes an anode and a cathode. An electrolyte material is disposed between the anode and the cathode. A separator is disposed between the anode and the cathode. The separator comprises an anodized metal oxide layer haying substantially straight and parallel through-pores, wherein the anodized metal oxide of the porous anodized metal oxide layer is selected from the group consisting of aluminum oxide, titanium oxide, zirconium oxide, niobium oxide, tungsten oxide, tantalum oxide, and hafnium oxide.Type: GrantFiled: December 19, 2008Date of Patent: July 10, 2012Assignee: Enovix CorporationInventors: Murali Ramasubramanian, Robert Spotnitz
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Publication number: 20110111283Abstract: 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: January 11, 2008Publication date: May 12, 2011Applicant: MICROAZURE CORPORATIONInventors: Harrold Jones Rust, III, Ashok Lahiri, Murali Ramasubramanian, Robert Spotnitz