Patents by Inventor Andrew C. Bobel

Andrew C. Bobel 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).

  • Patent number: 11904376
    Abstract: An energy-dissipating cover for covering a component sensitive to mechanical impulse includes a sheet of selected ferrous or aluminum alloy, the sheet having a top surface, a bottom surface, an outer perimeter, an overall area within the outer perimeter and a nominal thickness of no more than 2.5 mm. The sheet is configured for connection with one or more external structures at a plurality of connection points within the outer perimeter, wherein the overall area comprises a plurality of supported areas and at least one unsupported area. Embossments are formed within the at least one unsupported area and extend outward from the bottom surface. The embossments are shaped, sized and arranged so as to limit orthogonal deflection of the sheet from a mechanical impulse directed normal to the bottom surface of the sheet at the plurality of embossments.
    Type: Grant
    Filed: July 28, 2020
    Date of Patent: February 20, 2024
    Assignee: GM Global Technology Operations LLC
    Inventors: Erik B. Golm, Louis G. Hector, Jr., Anil K. Sachdev, Andrew C. Bobel, Kevin B. Rober, Jianfeng Wang
  • Patent number: 11870089
    Abstract: A battery cell pack has a plurality of battery cells that are assembled into a prismatic frame, with deformable separators interposed to accommodate elastic and plastic deformation caused by cyclic and acyclic expansion and contraction thereof during charging and discharging over the life of the battery cell pack. The battery cells are arranged in a horizontal stack within the prismatic frame, and the deformable separators are interposed between subsets of the battery cells. The deformable separators exert compressive force on the subsets of the battery cells along a longitudinal axis that is defined by the horizontal stack. The compressive force exerted by the deformable separators is at least a minimum force over a service life of the battery cell pack.
    Type: Grant
    Filed: March 15, 2022
    Date of Patent: January 9, 2024
    Assignee: GM Global Technology Operations LLC
    Inventors: Andrew C. Bobel, Anil K. Sachdev, Patrick H. Clark, Pooja Suresh, Ran Wu, Jermain E. Onye, William Y. Chen, Li Yang, Chao Hu, Yunshan Liu, Kuo Sun
  • Publication number: 20230373024
    Abstract: Methods for resistance welding, resistance-welded assemblies, and vehicles including resistance-welded assemblies are provided. The method includes providing a workpiece stack-up including first and second workpieces and an intermediate material located between the faying surfaces thereof. At least one of the first workpiece and the second workpiece is formed of a first metal alloy with a first concentration of an alloying element, and the intermediate material is formed of a second metal alloy of the first metal and a second concentration of the alloying element that is less than the first concentration. The method includes bringing electrodes into contact with the workpieces, passing an electrical current therebetween to form a molten weld pool, and cooling the molten weld pool into a weld nugget that forms all or part of a weld joint between the workpieces and has a composition that is a mixture of the workpieces and the intermediate material.
    Type: Application
    Filed: May 18, 2022
    Publication date: November 23, 2023
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Zhenke Teng, Tingting Zhang, Andrew C. Bobel, Jason M. Brown
  • Publication number: 20230299404
    Abstract: A battery cell pack has a plurality of battery cells that are assembled into a prismatic frame, with deformable separators interposed to accommodate elastic and plastic deformation caused by cyclic and acyclic expansion and contraction thereof during charging and discharging over the life of the battery cell pack. The battery cells are arranged in a horizontal stack within the prismatic frame, and the deformable separators are interposed between subsets of the battery cells. The deformable separators exert compressive force on the subsets of the battery cells along a longitudinal axis that is defined by the horizontal stack. The compressive force exerted by the deformable separators is at least a minimum force over a service life of the battery cell pack.
    Type: Application
    Filed: March 15, 2022
    Publication date: September 21, 2023
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Andrew C. Bobel, Anil K. Sachdev, Patrick H. Clark, Pooja Suresh, Ran Wu, Jermain E. Onye, William Y. Chen, Li Yang, Chao Hu, Yunshan Liu, Kuo Sun
  • Patent number: 11735744
    Abstract: A battery electrode, and a method for fabricating the battery electrode are described. The battery electrode includes a current collector having a woven mesh planar sheet that is composed of metallic strands. The metallic strands define a multiplicity of interstitial spaces, and the woven mesh planar sheet includes a first surface and a second surface. An active material including lithium is embedded in the interstitial spaces of a first portion of the woven mesh planar sheet, and an electrical connection tab arranged on a second portion of the woven mesh planar sheet.
    Type: Grant
    Filed: April 28, 2021
    Date of Patent: August 22, 2023
    Assignee: GM Global Technology Operations LLC
    Inventors: Anil K. Sachdev, Leng Mao, Louis G. Hector, Jr., Andrew C. Bobel
  • Patent number: 11549626
    Abstract: In an embodiment, a method of forming a cooling plate, comprises laser welding a plurality of weld lines to physically connect a first substrate and a second substrate wherein the plurality of weld lines forms an inflatable track; and inflating the inflatable track with an inflation fluid to form a cooling channel in the cooling plate. In another embodiment, the cooling plate can comprise a first substrate and a second substrate and a plurality of weld lines can form a fluid tight seal for a cooling channel located therebetween.
    Type: Grant
    Filed: June 17, 2019
    Date of Patent: January 10, 2023
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Anil K. Sachdev, Arianna T. Morales, Jason Mazza, Andrew C. Bobel
  • Publication number: 20220416220
    Abstract: A lithium metal negative electrode for an electrochemical cell for a secondary lithium metal battery includes a polycrystalline metal substrate having a major facing surface with a defined crystallographic texture. An epitaxial lithium metal layer is formed on the major facing surface of the polycrystalline metal substrate. The epitaxial lithium metal layer exhibits a predominant crystal orientation. The predominant crystal orientation of the epitaxial lithium metal layer is derived from the defined crystallographic texture of the major facing surface of the polycrystalline metal substrate.
    Type: Application
    Filed: June 28, 2021
    Publication date: December 29, 2022
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Andrew C. Bobel, Louis G. Hector, JR., Anil K. Sachdev, Jeffrey D. Cain
  • Patent number: 11498839
    Abstract: Systems, methods and compositions to produce fine powders are described. These include forming a hypereutectic melt including a target material, a sacrificial-matrix material, and an impurity, rapidly cooling the hypereutectic melt to form a hypereutectic alloy having a first phase and a second phase, annealing the hypereutectic alloy to alter a morphology of the target material to thereby produce target particles, and removing the sacrificial matrix to thereby produce a fine powder of the target particles. The first phase is defined by the target material and the second phase is defined by the sacrificial-matrix material. The sacrificial-matrix material forms a sacrificial matrix having the target material dispersed therethrough.
    Type: Grant
    Filed: June 1, 2019
    Date of Patent: November 15, 2022
    Assignee: GM Global Technology Operations LLC
    Inventors: Mahmoud Abd Elhamid, Andrew C. Bobel, Anil K. Sachdev, Mark W. Verbrugge, Nicholas P. Pieczonka, James R. Salvador
  • Publication number: 20220352523
    Abstract: A battery electrode, and a method for fabricating the battery electrode are described. The battery electrode includes a current collector having a woven mesh planar sheet that is composed of metallic strands. The metallic strands define a multiplicity of interstitial spaces, and the woven mesh planar sheet includes a first surface and a second surface. An active material including lithium is embedded in the interstitial spaces of a first portion of the woven mesh planar sheet, and an electrical connection tab arranged on a second portion of the woven mesh planar sheet.
    Type: Application
    Filed: April 28, 2021
    Publication date: November 3, 2022
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Anil K. Sachdev, Leng Mao, Louis G. Hector, JR., Andrew C. Bobel
  • Patent number: 11479304
    Abstract: An energy absorber for interposition between a cover and a covered object includes a generally planar matrix of cells. Each of the cells includes a plurality of generally elongate micro-elements interconnected to form a cell micro-structure, with each cell having a respective energy absorption capacity such that an energy absorption capacity of the energy absorber varies across at least one direction. The cells are configured such that impulse of an object with the cover with the energy absorber sandwiched between the cover and the covered object causes a deceleration vs. time response in the object, beginning with a generally linear rise in the deceleration to a peak deceleration within 5 ms after the beginning of the impulse event, followed by a generally nonlinear decrease in the deceleration over a period of not greater than 15 ms to a final target deceleration of not greater than 10% of the peak deceleration.
    Type: Grant
    Filed: May 15, 2019
    Date of Patent: October 25, 2022
    Assignee: GM Global Technology Operations LLC
    Inventors: Hanif Muhammad, Louis G. Hector, Jr., Mark A. Beauregard, Andrew C. Bobel, Michael J. Sigelko
  • Patent number: 11476463
    Abstract: Disclosed herein is a method comprising mixing an electroactive particle with a carbonaceous material to form a particle mixture that comprises a carbon coated particle; subjecting the carbon coated particle to a pulsed voltage between parallel plate electrodes or between rolls of a roll mill; and converting the carbon coated particle to a graphite coated particle via localized Joule heating. Disclosed herein too is an apparatus comprising a mixing device that is operative to mix an electroactive particle with a carbonaceous material to form a particle mixture that comprises a carbon coated particle; and a device for applying a pulsed voltage to the particle mixture; where the applying of the pulsed voltage is conducted when the particle mixture is located between opposing plate electrodes or between opposing rolls of a roll mill; where the device for applying the pulsed voltage converts the carbon coated particle into a graphite coated particle.
    Type: Grant
    Filed: August 7, 2020
    Date of Patent: October 18, 2022
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Jeffrey D. Cain, Thomas E. Moylan, Andrew C. Bobel, Lei Wang
  • Patent number: 11421310
    Abstract: A precipitation hardenable aluminum alloy is disclosed along with a precipitation hardened form of the aluminum alloy and a method of manufacturing an aluminum alloy article from the precipitation hardenable aluminum alloy. The disclosed precipitation hardenable aluminum alloy has a composition that includes, on a weight percent (wt %) basis, 8%-13% zinc, 1.5%-5% magnesium, 0%-5% copper, 0%-2% of zirconium, chromium, or zirconium and chromium in total, and the balance aluminum with no more than 0.5% impurities. The alloy composition is adaptable to a wide range of manufacturing processes including additive manufacturing. The composition of the aluminum alloy also enables the dispersion of strengthening precipitate phases selected from an ?-phase precipitate, a ?-phase precipitate, and a T-phase precipitate, while being free of a S-phase precipitate, when precipitation hardened.
    Type: Grant
    Filed: October 17, 2018
    Date of Patent: August 23, 2022
    Assignee: GM Global Technology Operations LLC
    Inventors: Andrew C. Bobel, Anil K. Sachdev
  • Patent number: 11342545
    Abstract: The present disclosure relates to electroactive materials for use in electrodes of lithium-ion electrochemical cells and methods of making the same, for example, methods for lithiating electroactive materials. A method of lithiating an electroactive material may include dispersing an electroactive material precursor within a room-temperature electrolyte that includes a lithium-based salt and contacting the electrolyte mixture and a lithium source so as to cause the lithium source to ionize and form lithium ions. The lithium ions may react with the electroactive material precursor to form a fully lithiated electroactive material (e.g., greater than 70% of total lithiation). The method further includes, in certain aspects, electrochemically discharging the fully lithiated electroactive material to form a lithiated electroactive material having an optimized lithiation state (e.g., less than or equal to about 40% of a first lithiation state of the fully lithiated electroactive material).
    Type: Grant
    Filed: December 6, 2019
    Date of Patent: May 24, 2022
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Jeffrey D. Cain, Andrew C. Bobel, Nicholas P. Pieczonka, Robert D. Schmidt, Anil K. Sachdev, Mark W. Verbrugge
  • Publication number: 20220123279
    Abstract: Self-lithiating battery cells include an anode having a current collector, a host material applied to the current collector comprising graphite, silicon particles, and/or SiOx particles, wherein x is less than or equal to 2, and lithium foil in contact with the current collector. Methods for pre-lithiating battery cells include charging and discharging the battery cell to deplete the lithium foil by causing lithium ions to migrate from the lithium foil to the cathode and/or the anode. The methods can further include subsequently iteratively charging and discharging the battery while the depleted lithium foil remains within the battery cell. The lithium foil can be pure elemental lithium metal or a lithium magnesium alloy. The lithium foil can include 10 wt. % to 99 wt. % lithium and 1 wt. % to 90 wt. % magnesium. The anode current collector can include perforations.
    Type: Application
    Filed: October 15, 2020
    Publication date: April 21, 2022
    Inventors: Leng Mao, Jeffrey D. Cain, Anil K. Sachdev, Andrew C. Bobel
  • Publication number: 20220045326
    Abstract: Disclosed herein is a method comprising mixing an electroactive particle with a carbonaceous material to form a particle mixture that comprises a carbon coated particle; subjecting the carbon coated particle to a pulsed voltage between parallel plate electrodes or between rolls of a roll mill; and converting the carbon coated particle to a graphite coated particle via localized Joule heating. Disclosed herein too is an apparatus comprising a mixing device that is operative to mix an electroactive particle with a carbonaceous material to form a particle mixture that comprises a carbon coated particle; and a device for applying a pulsed voltage to the particle mixture; where the applying of the pulsed voltage is conducted when the particle mixture is located between opposing plate electrodes or between opposing rolls of a roll mill; where the device for applying the pulsed voltage converts the carbon coated particle into a graphite coated particle.
    Type: Application
    Filed: August 7, 2020
    Publication date: February 10, 2022
    Inventors: Jeffrey D. Cain, Thomas E. Moylan, Andrew C. Bobel, Lei Wang
  • Publication number: 20220039278
    Abstract: An energy-dissipating cover for covering a component sensitive to mechanical impulse includes a sheet of selected ferrous or aluminum alloy, the sheet having a top surface, a bottom surface, an outer perimeter, an overall area within the outer perimeter and a nominal thickness of no more than 2.5 mm. The sheet is configured for connection with one or more external structures at a plurality of connection points within the outer perimeter, wherein the overall area comprises a plurality of supported areas and at least one unsupported area. Embossments are formed within the at least one unsupported area and extend outward from the bottom surface. The embossments are shaped, sized and arranged so as to limit orthogonal deflection of the sheet from a mechanical impulse directed normal to the bottom surface of the sheet at the plurality of embossments.
    Type: Application
    Filed: July 28, 2020
    Publication date: February 3, 2022
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Erik B. Golm, Louis G. Hector, JR., Anil K. Sachdev, Andrew C. Bobel, Kevin B. Rober, Jianfeng Wang
  • Publication number: 20210408517
    Abstract: A method for making a pre-lithiated electrode for a lithium ion battery cell, a method for making a battery with a pre-lithiated electrode, and an electric vehicle with a pre-lithiated electrode are provided. An exemplary method for making a pre-lithiated electrode for a lithium ion battery cell includes electrochemically connecting a magnesium-lithium alloy to the electrode. Further, the method includes pre-lithiating the electrode by transferring lithium ions from the magnesium-lithium alloy to the electrode. Also, the method includes electrochemically disconnecting the magnesium-lithium alloy from the electrode.
    Type: Application
    Filed: June 25, 2020
    Publication date: December 30, 2021
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Andrew C. Bobel, Anil K. Sachdev, Jeffrey D. Cain, Leng Mao
  • Publication number: 20210316996
    Abstract: Systems, methods and compositions to produce fine powders are described. These include forming a hypereutectic melt including a target material, a sacrificial-matrix material, and an impurity, rapidly cooling the hypereutectic melt to form a hypereutectic alloy having a first phase and a second phase, annealing the hypereutectic alloy to alter a morphology of the target material to thereby produce target particles, and removing the sacrificial matrix to thereby produce a fine powder of the target particles. The first phase is defined by the target material and the second phase is defined by the sacrificial-matrix material. The sacrificial-matrix material forms a sacrificial matrix having the target material dispersed therethrough.
    Type: Application
    Filed: June 1, 2019
    Publication date: October 14, 2021
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Mahmoud Abd Elhamid, Andrew C. Bobel, Anil K. Sachdev, Mark W. Verbrugge, Nicholas P. Pieczonka, James R. Salvador
  • Patent number: 11117191
    Abstract: A connecting rod comprises a shaft connecting a first end including a first bore with a second end including a second bore. Methods for forming and assembling a connecting rod and crankshaft assembly include fabricating the second end of the connecting rod via additive manufacturing such that the second end comprises a first and second weakened regions on opposing sides of the second bore, and breaking the second end of the connecting rod at the first and second weakened regions to form a connecting rod assembly comprising a second end base and a second end cap, wherein the base comprises a first fracture face and a second fracture face which each respectively correspond to a first fracture face and a second fracture face of the cap. The methods can further include mating the base and the cap such that a crankpin of a crankshaft is disposed within the second bore.
    Type: Grant
    Filed: October 30, 2018
    Date of Patent: September 14, 2021
    Assignee: GM Global Technology Operations LLC
    Inventors: Andrew C. Bobel, Tyson W. Brown, Whitney A. Poling
  • Publication number: 20210175486
    Abstract: The present disclosure relates to electroactive materials for use in electrodes of lithium-ion electrochemical cells and methods of making the same, for example, methods for lithiating electroactive materials. A method of lithiating an electroactive material may include dispersing an electroactive material precursor within a room-temperature electrolyte that includes a lithium-based salt and contacting the electrolyte mixture and a lithium source so as to cause the lithium source to ionize and form lithium ions. The lithium ions may react with the electroactive material precursor to form a fully lithiated electroactive material (e.g., greater than 70% of total lithiation). The method further includes, in certain aspects, electrochemically discharging the fully lithiated electroactive material to form a lithiated electroactive material having an optimized lithiation state (e.g., less than or equal to about 40% of a first lithiation state of the fully lithiated electroactive material).
    Type: Application
    Filed: December 6, 2019
    Publication date: June 10, 2021
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Jeffrey D. CAIN, Andrew C. BOBEL, Nicholas P. PIECZONKA, Robert D. SCHMIDT, Anil K. SACHDEV, Mark W. VERBRUGGE