Patents by Inventor Dewen Kong

Dewen Kong 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: 11430981
    Abstract: A material including TiO2 nanoparticles at least partially embedded in a matrix material of TixNbyOz, where 0<x?2, 0<y?24, and 0<z?62, is provided. Methods of making the material are also provided.
    Type: Grant
    Filed: October 23, 2019
    Date of Patent: August 30, 2022
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Yong Lu, Dewen Kong, Mengyan Hou, Zhe Li, Haijing Liu
  • Patent number: 11380939
    Abstract: A hybrid lithium ion capacitor battery and method of making the same is disclosed. The hybrid lithium ion capacitor battery includes a positive electrode separated from a negative electrode by a separator layer. A first activated carbon layer is disposed between the separator layer and one of the positive and negative electrodes. The first activated carbon layer is coated on a first surface of the separator layer. A second activated carbon layer is disposed between the separator layer and the other of the positive and negative electrodes. The second activated carbon layer is coated on a second surface of the separator layer. A first current collector coextensively contacts the first electrode and a second current collector coextensively contacts the second electrode. An electrolytic solution carries lithium cations between the positive and negative electrodes through the activated carbon coated separator layer.
    Type: Grant
    Filed: May 18, 2018
    Date of Patent: July 5, 2022
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Qili Su, Dewen Kong, Yong Lu, Zhe Li
  • Patent number: 11374257
    Abstract: In an embodiment, a softened solid-state electrolyte, comprises an oxide-based solid-state electrolyte, where at least a portion of the oxide anions in the oxide-based solid-state electrolyte is replaced with a replacement anion. In another embodiment, a softened solid-state electrolyte comprises a sulfide-based solid-state electrolyte, wherein at least a portion of the sulfide anions in the sulfide-based solid-state electrolyte is replaced with the replacement anion. When the replacement anion replaces the oxide anion, the replacement anion has a larger atomic radius than the oxide anion and when the replacement anion replaces the sulfide anion, the replacement anion has a larger atomic radius than the sulfide anion.
    Type: Grant
    Filed: September 3, 2019
    Date of Patent: June 28, 2022
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Mengyan Hou, Haijing Liu, Dewen Kong, Yong Lu
  • Publication number: 20220200077
    Abstract: An electrochemical device according to various aspects of the present disclosure includes an electrochemical cell and an inductor coil. The electrochemical cell includes a current collector. the current collector includes an electrically-conductive material. The inductor coil is configured to generate a magnetic field. The magnetic field is configured to induce an eddy current in the current collector to generate heat in the current collector. In various aspects, the present disclosure also provides a method of internally heating an electrochemical cell. In various aspects, the present disclosure also provides a method of controlling heating of an electrochemical cell.
    Type: Application
    Filed: December 23, 2021
    Publication date: June 23, 2022
    Applicant: GM Global Technology Operations LLC
    Inventors: Jingyuan LIU, Dewen KONG, Dave G. RICH, Haijing LIU, Lyall K. WINGER, Mark W. VERBRUGGE
  • Publication number: 20220181635
    Abstract: An asymmetric hybrid electrode for a capacitor-assisted battery includes a current and first and second electroactive portions. The first electroactive portion is on a first surface of the current collector. The first electroactive portion includes a first battery layer. The first battery layer includes a first battery electroactive material and a first binder. The second electroactive portion is on a second surface of the current collector opposite the first surface. The second electroactive portion includes a second battery layer and a capacitive layer. The second battery layer includes a second battery electroactive material and a second binder. The capacitive layer includes a capacitive electroactive material and a third binder. The first and second electroactive portions are asymmetric. The first and second battery electroactive materials are both positive electroactive materials or both negative electroactive materials. The asymmetric hybrid electrode has a capacitor hybridization ratio of 0.01-1%.
    Type: Application
    Filed: December 3, 2021
    Publication date: June 9, 2022
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Dewen Kong, Xiaochao Que, Meiyuan Wu, Haijing Liu
  • Publication number: 20220173377
    Abstract: The present disclosure relates to high capacity (e.g., areal capacity greater than about 4 mAh/cm2 to less than or equal to about 50 mAh/cm2) electrodes for electrochemical cells. An example electrode may include a current collector (e.g., meshed current collector) and one or more electroactive material layers having thicknesses greater than about 150 ?m to less than or equal to about 5 mm. The electroactive material layers may each include lithium manganese iron phosphate (LiMnxFe1-xPO4, where 0?x?1) (LMFP). The electrode may further include one or more electronically conductive adhesive layers disposed between the current collector and the electroactive material layers. The adhesive layers may include one or more polymer components and one or more conductive fillers. The electroactive material layers may be gradient layers, where sublayers closer to the current collector has a lower porosity than layers further from the current collector.
    Type: Application
    Filed: December 1, 2021
    Publication date: June 2, 2022
    Applicant: GM Global Technology Operations LLC
    Inventors: Dewen KONG, Xiaochao QUE, Haijing LIU, Xiaosong HUANG, Mark W. VERBRUGGE, Meiyuan WU
  • Publication number: 20220173370
    Abstract: A method of manufacturing an electrode for an electrochemical cell includes providing an admixture including an electroactive material, a binder, and a solvent. The method further includes rolling the admixture to form a sheet and forming a multi-layer stack from the sheet. The method further includes forming an electrode film precursor by performing a plurality of sequential rollings, each including rolling the stack through a first gap. The plurality of sequential rollings includes first and second rollings. In the first rolling, the stack is in a first orientation. In the second rolling, the stack is in a second orientation different from the first orientation. The method further includes forming an electrode film by rolling the electrode film precursor through a second gap less than or equal to the first gap. The method further includes drying the electrode film to remove at least a portion of the solvent.
    Type: Application
    Filed: December 1, 2021
    Publication date: June 2, 2022
    Applicant: GM Global Technology Operations LLC
    Inventors: Dewen KONG, Xiaochao QUE, Meiyuan WU, Haijing LIU, Xiaosong HUANG, Mark W. VERBRUGGE
  • Publication number: 20220045379
    Abstract: The present disclosure relates a temperature regulating system including an anisotropic material for use as a heating material or element (e.g., an active heater) and a cooling material or element (e.g., passive cooling) in a battery pack including one or more electrochemical cells. The temperature regulating system includes one or more temperature control elements. Each temperature control element is configured to be in a heat transfer relationship with one or more electrochemical cells so as to heat and/or cool the one or more electrochemical cells of the battery pack. Each temperature control element includes two or more structural elements and one or more anisotropic elements disposed between the two or more structural elements. The temperature control elements may be disposed between the electrochemical cells of the stack, disposed around the electrochemical cells of the stack, or both.
    Type: Application
    Filed: August 4, 2021
    Publication date: February 10, 2022
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Dave G. RICH, Saad HASAN, Lyall K. WINGER, Dewen KONG, Haijing LIU
  • Publication number: 20220021044
    Abstract: A thermal device comprises a first layer of a non-metallic material that is a good conductor of heat and electricity, that includes a first terminal and a second terminal, and that has a first surface and a second surface; a metallic material disposed on the first surface of the first layer; a first plastic layer disposed on the metallic material; and a second plastic layer disposed on the second surface of the first layer. The first plastic layer and the second plastic layer include a plastic material that is a good conductor of heat.
    Type: Application
    Filed: March 17, 2021
    Publication date: January 20, 2022
    Inventors: Dewen KONG, Dave G. RICH, Lyall K. WINGER, Meiyuan WU, Jingyuan LIU, Haijing LIU
  • Patent number: 11205798
    Abstract: A capacitor-assisted, solid-state lithium-ion battery is formed by replacing at least one of the electrodes of the battery with a capacitor electrode of suitable particulate composition for the replaced battery particulate anode or cathode material. The solid-state electrodes typically contain solid-state electrode material and are separated with solid-state electrode material. In another embodiment the capacitor anode or cathode particles may be mixed with lithium-ion battery anode or cathode particles respectively. Preferably, the battery comprises at least two positively-charged electrodes and two negatively-charged electrodes, and the location and compositions of the capacitor material electrode(s) may be selected to provide a desired combination of energy and power.
    Type: Grant
    Filed: July 30, 2018
    Date of Patent: December 21, 2021
    Assignee: GM Global Technology Operations LLC
    Inventors: Zhe Li, Dave G. Rich, Haijing Liu, Dewen Kong, Sherman H. Zeng
  • Patent number: 11171365
    Abstract: A capacitor-assisted, solid-state lithium-ion battery is formed by replacing at least one of the electrodes of the battery with a capacitor electrode of suitable particulate composition for the replaced battery particulate anode or cathode material. The solid-state electrodes typically contain quasi-solid-state electrode material and are separated with a layer of quasi-solid-state electrolyte material. In another embodiment the capacitor anode or cathode particles may be mixed with lithium-ion battery anode or cathode particles respectively. Preferably, the battery comprises at least two positively-charged electrodes and two negatively-charged electrodes, and the location, number and compositions of the capacitor material electrode(s) may be selected to provide a desired combination of energy and power.
    Type: Grant
    Filed: April 22, 2019
    Date of Patent: November 9, 2021
    Assignee: GM Global Technology Operations LLC
    Inventors: Zhe Li, Dave G. Rich, Haijing Liu, Dewen Kong, Sherman H. Zeng
  • Patent number: 11121375
    Abstract: Individual electrodes for a solid-state lithium-ion battery cell may be formed, for example, by elevated temperature consolidation in air of a mixture of resin-bonded, electrode active material particles, oxide solid electrolyte particles, and particles of a non-carbon electronic conductive additive. Depending on the selected compositions of the electrode materials and the solid electrolyte, one or both of the cathode and anode layer members may be formed to include the non-carbon electronic conductive additive. The battery cell is assembled with the solid-state electrodes placed on opposite sides of a consolidated layer of oxide electrolyte particles. The electronic conductivity of at least one of the cathode and anode is increased by the incorporation of particles of a selected non-carbon electronic conducive additive with the respective electrode particles.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: September 14, 2021
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Mengyan Hou, Zhe Li, Dewen Kong, Haijing Liu, Qili Su
  • Publication number: 20210151260
    Abstract: A capacitor-assisted electrode for an electrochemical cell that cycles lithium ions is provided. The capacitor-assisted electrode may include at least two electroactive materials disposed on one or more surfaces of a current collector. A first electroactive material of the at least two electroactive materials may have a first reversible specific capacity and forms a first electroactive material having a first press density. A second electroactive material of the at least two electroactive materials has a second reversible specific capacity and forms a second electroactive material having a second press density. The second reversible specific capacity may be different from the first reversible specific capacity. The second press density may be different from the first press density. One or more capacitor materials may be disposed on or intermingled with one or more of the at least two electroactive materials.
    Type: Application
    Filed: November 15, 2019
    Publication date: May 20, 2021
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Dewen KONG, Xiaochao QUE, Meiyuan WU, Si CHEN, Haijing LIU, Mark W. VERBRUGGE
  • Publication number: 20210151809
    Abstract: A capacitor-assisted battery module includes a housing, a positive terminal, a negative terminal, one or more capacitor-assisted battery cells and one or more first switches. The one or more capacitor-assisted battery cells are disposed in the housing and include one or more battery terminals and one or more capacitor terminals. The one or more battery terminals are connected to battery electrodes. The one or more capacitor terminals are connected to capacitor electrodes. At least one of the one or more battery terminals and the capacitor terminals is connected to the negative terminal. One or more first switches is configured to connect the one or more capacitor terminals to the positive terminal. An overall voltage of the capacitor assisted battery module is measured across the positive terminal and the negative terminal.
    Type: Application
    Filed: February 3, 2020
    Publication date: May 20, 2021
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Dewen KONG, Xiaochao QUE, Dave G. RICH, Si CHEN, Meiyuan WU, Haijing LIU
  • Publication number: 20210110979
    Abstract: A capacitor-assisted hybrid lithium-ion electrochemical cell assembly includes two positive electrodes having a first polarity, each having at least two electrically conductive tabs disposed on at least one first edge and at least one second edge. Further, two negative electrodes having a second polarity each having at least two electrically conductive tabs disposed on at least one first edge and at least one second edge. At least one of the two positive electrodes or negative electrodes are distinct from one another. The electrically conductive tabs are substantially aligned in the electrochemical cell to respectively define a plurality of positive electrical connectors and a plurality of negative electrical connectors to reduce current density during high power charging and discharging.
    Type: Application
    Filed: February 10, 2020
    Publication date: April 15, 2021
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Xiaochao QUE, Dave G. RICH, Haijing LIU, Dewen KONG
  • Publication number: 20210110980
    Abstract: Hybrid lithium-ion electrochemical cells include a first electrode having a first polarity and a first electroactive material that reversibly cycles lithium ions having a first maximum operational voltage and a second electrode having the first polarity with a second electroactive material having a second maximum operational voltage. A difference between the second and first maximum operational voltages defines a predetermined voltage difference. Also included are at least one third electrode including a third electroactive material that reversibly cycles lithium ions having a second polarity opposite to the first polarity, a separator, and electrolyte. A voltage modification component (e.g., diode) is in electrical communication with the first and the second electrodes.
    Type: Application
    Filed: October 14, 2020
    Publication date: April 15, 2021
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Qili SU, Haijing LIU, Meiyuan WU, Dewen KONG, Mengyan HOU
  • Patent number: 10944100
    Abstract: At least one of the anode and cathode of a lithium-ion processing electrochemical cell are prepared with a layer of mixed particles of both active lithium battery electrode materials and lithium ion adsorbing capacitor materials, or with co-extensive, contiguous layers of battery electrode particles in one layer and capacitor particles in the adjoining layer. The proportions of active battery electrode particles and active capacitor particles in one or both of the electrodes are predetermined to provide specified energy density (Wh/kg) and power density (W/kg) properties of the cell for its intended application.
    Type: Grant
    Filed: June 1, 2016
    Date of Patent: March 9, 2021
    Assignee: GM Global Technology Operations LLC
    Inventors: Haijing Liu, Zhiqiang Yu, Dewen Kong, Meiyuan Wu
  • Publication number: 20210066746
    Abstract: In an embodiment, a softened solid-state electrolyte, comprises an oxide-based solid-state electrolyte, where at least a portion of the oxide anions in the oxide-based solid-state electrolyte is replaced with a replacement anion. In another embodiment, a softened solid-state electrolyte comprises a sulfide-based solid-state electrolyte, wherein at least a portion of the sulfide anions in the sulfide-based solid-state electrolyte is replaced with the replacement anion. When the replacement anion replaces the oxide anion, the replacement anion has a larger atomic radius than the oxide anion and when the replacement anion replaces the sulfide anion, the replacement anion has a larger atomic radius than the sulfide anion.
    Type: Application
    Filed: September 3, 2019
    Publication date: March 4, 2021
    Inventors: Mengyan Hou, Haijing Liu, Dewen Kong, Yong Lu
  • Publication number: 20210066711
    Abstract: A material including TiO2 nanoparticles at least partially embedded in a matrix material of TixNbyOz, where 0<x?2, 0<y?24, and 0<z?62, is provided. Methods of making the material are also provided.
    Type: Application
    Filed: October 23, 2019
    Publication date: March 4, 2021
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Yong LU, Dewen KONG, Mengyan HOU, Zhe LI, Haijing LIU
  • Publication number: 20210065993
    Abstract: Hybrid electrochemical cells and modules include an anode two-sided current collector a coated with host material in anode region(s) and a cathode two-sided current collector coated with active material in cathode region(s), and one or more of the anode current collector and the cathode current collector is coated with capacitor material in one or more distinct, non-overlapping capacitor regions. A hybrid anode and/or cathode can include gaps between capacitor regions and anode regions and cathode regions. The capacitor material applied to an electrode is different from the host or active material thereof. Active material includes lithium metal oxides and lithium metal phosphates such as LiFePO4, Li(NixMnyCoz)O2, and/or LiMn2O4; host material includes graphite, silicon, silicon-Li/Sn/Cu alloys, Si/Co/Fe/TiSn oxides, and low-surface area carbon; and capacitor material includes activated carbon, metal oxides, and metal sulfides.
    Type: Application
    Filed: April 23, 2018
    Publication date: March 4, 2021
    Inventors: Helen Liu, Xiaochao Que, Dewen Kong, Jianfeng Wang