Patents by Inventor Liyu Li

Liyu Li 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).

  • Publication number: 20190379079
    Abstract: In one embodiment of the present disclosure, a composition for producing a vanadium electrolyte includes a vanadium compound and an ion solution containing vanadium ions and hydrogen ions. In another embodiment, a method for producing a vanadium electrolyte includes obtaining a vanadium compound, and mixing the vanadium compound with an ion solution containing vanadium ions and hydrogen ions.
    Type: Application
    Filed: April 15, 2019
    Publication date: December 12, 2019
    Applicant: UniEnergy Technologies, LLC
    Inventors: Yueqi Liu, Liyu Li, Chenxi Sun, Richard O. Winter, Zhenguo Yang
  • Publication number: 20190331844
    Abstract: An optical module and a display device are provided; the optical module includes a light guide plate, the light guide plate includes a first surface and a second surface that are opposite; the second surface includes a plurality of non-planar portions and a plurality of planar portions; at least one of the plurality of non-planar portions is between any two adjacent planar portions; and each non-planar portion includes a first light-transmitting inclined plane inclined with respect to the plurality of planar portions.
    Type: Application
    Filed: April 10, 2019
    Publication date: October 31, 2019
    Inventors: Jingjun DU, Fei LIANG, Lingyu SUN, Xiuyun CHEN, Daekeun YOON, Miao LIU, Xin GAI, Zheng WANG, Fei DONG, Liyu FANG, Qingqing MA, Xi LI, Tingxiu HOU
  • Publication number: 20190319289
    Abstract: A method of operating a redox flow battery string including at least first and second redox flow batteries and an outside power source includes: providing a least first and second redox flow batteries in a string electrically connected in a string, and each redox flow battery having a state-or-charge (SOC); obtaining an SOC value for each redox flow battery in the string; identifying a target SOC value in the string; and adjusting the SOC value for at least one of the first and second redox flow batteries to correspond to the target SOC value.
    Type: Application
    Filed: November 19, 2018
    Publication date: October 17, 2019
    Applicant: UniEnergy Technologies, LLC
    Inventors: Chenxi Sun, Jinfeng Wu, Liyu Li, Jacob Parks, David Ridley
  • Patent number: 10333159
    Abstract: A method of operating a redox flow battery string includes providing a plurality of redox flow batteries, each redox flow battery in electrical communication with at least one other redox flow battery, and each redox flow battery comprising an anolyte storage tank including a quantity of anolyte, a catholyte storage tank including a quantity of catholyte, and an electrochemical cell in fluid communication with the anolyte and catholyte storage tanks; obtaining an open circuit voltage value for each redox flow battery in the string; identifying a predetermined open circuit voltage value in the string; and adjusting the open circuit voltage value for each redox flow battery to correspond to the predetermined open circuit voltage value. A redox flow battery string system includes a plurality of redox flow batteries each redox flow battery in electrical communication with at least one other redox flow battery having an open circuit voltage value.
    Type: Grant
    Filed: July 7, 2015
    Date of Patent: June 25, 2019
    Assignee: UniEnergy Technologies, LLC
    Inventors: Liyu Li, Chenxi Sun, Jinfeng Wu
  • Publication number: 20180375132
    Abstract: In one embodiment, a redox flow battery includes an electrochemical cell in fluid communication with anolyte and catholyte working electrolytes, and a primary OCV cell to measure the potential difference between the positive and negative working electrolyte, and a reference OCV cell to measure the potential difference between the reference cell working electrolyte, which is one of the anolyte and catholyte working electrolytes, and a reference electrolyte, wherein the reference electrolyte has a known potential. In another embodiment, a method of operating a redox flow battery includes calculating the potential values of the anolyte and catholyte working electrolytes based on the known potential values of the reference electrolyte and the first and second potential difference values obtained from the primary OCV cell and the reference OCV cell.
    Type: Application
    Filed: June 21, 2018
    Publication date: December 27, 2018
    Applicant: UniEnergy Technologies, LLC
    Inventors: Liyu Li, Guanguang Xia, Qingtao Luo, Lijun Bai, Jinfeng Wu, Yueqi Liu
  • Patent number: 10135087
    Abstract: A method of operating a redox flow battery string including at least first and second redox flow batteries and an outside power source includes: providing a least first and second redox flow batteries in a string electrically connected in a string, and each redox flow battery having a state-or-charge (SOC) and an electrical load, wherein the electrical load for at least one of the first and second redox flow batteries in the string is powered by the outside power source; obtaining an SOC value for each redox flow battery in the string; identifying a target SOC value in the string; and adjusting the SOC value for at least one of the first and second redox flow batteries to correspond to the target SOC value by using a portion of stored energy in the at least one first or second redox flow battery to supply power to the electrical load.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: November 20, 2018
    Assignee: UniEnergy Technologies, LLC
    Inventors: Chenxi Sun, Jinfeng Wu, Liyu Li, Jacob Parks, David Ridley
  • Publication number: 20180331383
    Abstract: In one embodiment, a cell in a redox flow battery includes a first flow frame for flow of a catholyte, a second flow frame for flow of an anolyte, and a separator between the first flow frame and the second flow frame, wherein the separator has a first side and a second side and an outer perimeter, and a gasket-and-separator assembly including a gasket assembly laminated to the separator, wherein the gasket assembly seals the outer perimeter of the separator on the first side and the second side.
    Type: Application
    Filed: May 9, 2018
    Publication date: November 15, 2018
    Inventors: Jinfeng Wu, Liyu Li, Lijun Bai, Qingtao Luo, Guanguang Xia, Yueqi Liu
  • Publication number: 20180166725
    Abstract: A method of operating a redox flow battery includes: providing a redox flow battery configurable to be in off and on states and to be in an islanded state , the redox flow battery including an electrochemical cell in fluid communication with anolyte and catholyte storage tanks, wherein a portion of the anolyte and a portion of the catholyte is contained in the electrochemical cell, and wherein the redox flow battery is at least partially charged; identifying the redox flow battery to be in an off and islanded state; maintaining stored energy in the electrolyte in the electrochemical cell when the redox flow battery is in the off and islanded state; and using the energy stored in the electrolyte in the electrochemical cell to start the redox flow battery and enter the on state.
    Type: Application
    Filed: December 9, 2016
    Publication date: June 14, 2018
    Applicant: UniEnergy Technologies, LLC
    Inventors: Chenxi Sun, Jinfeng Wu, Liyu Li, Jacob Parks, David Ridley
  • Publication number: 20180166726
    Abstract: A method of operating a redox flow battery string including at least first and second redox flow batteries and an outside power source includes: providing a least first and second redox flow batteries in a string electrically connected in a string, and each redox flow battery having a state-or-charge (SOC) and an electrical load, wherein the electrical load for at least one of the first and second redox flow batteries in the string is powered by the outside power source; obtaining an SOC value for each redox flow battery in the string; identifying a target SOC value in the string; and adjusting the SOC value for at least one of the first and second redox flow batteries to correspond to the target SOC value by using a portion of stored energy in the at least one first or second redox flow battery to supply power to the electrical load.
    Type: Application
    Filed: December 9, 2016
    Publication date: June 14, 2018
    Applicant: UniEnergy Technologies, LLC
    Inventors: Chenxi Sun, Jinfeng Wu, Liyu Li, Jacob Parks, David Ridley
  • Patent number: 9960443
    Abstract: Introducing multiple redox reactions with a suitable voltage range can improve the energy density of redox flow battery (RFB) systems. One example includes RFB systems utilizing multiple redox pairs in the positive half cell, the negative half cell, or in both. Such RFB systems can have a negative electrolyte, a positive electrolyte, and a membrane between the negative electrolyte and the positive electrolyte, in which at least two electrochemically active elements exist in the negative electrolyte, the positive electrolyte, or both.
    Type: Grant
    Filed: September 27, 2011
    Date of Patent: May 1, 2018
    Assignee: Battelle Memorial Institute
    Inventors: Wei Wang, Liyu Li, Zhenguo Yang, Zimin Nie
  • Patent number: 9941527
    Abstract: A method of operating a redox flow battery includes providing a redox flow battery including an anolyte storage tank configured for containing a quantity of anolyte and an anolyte headspace, a catholyte storage tank configured for containing a quantity of a catholyte and a catholyte headspace, and a gas management system comprising at least one open conduit interconnecting the anolyte headspace and the catholyte headspace for free gas exchange between the anolyte and catholyte headspaces, and a passive gas exchange device in gaseous fluid communication with the anolyte headspace, the passive gas exchange device configured to release gas from the anolyte headspace to an exterior battery environment when an interior battery pressure exceeds an exterior battery pressure by a predetermined amount, and operating the battery.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: April 10, 2018
    Assignee: UniEnergy Technologies, LLC
    Inventors: Liyu Li, Guanguang Xia, Jinfeng Wu, Chenxi Sun, Christopher Howard
  • Publication number: 20180019486
    Abstract: A method of operating a redox flow battery includes providing a redox flow battery including an anolyte storage tank configured for containing a quantity of anolyte and an anolyte headspace, a catholyte storage tank configured for containing a quantity of a catholyte and a catholyte headspace, and a gas management system comprising at least one open conduit interconnecting the anolyte headspace and the catholyte headspace for free gas exchange between the anolyte and catholyte headspaces, and a passive gas exchange device in gaseous fluid communication with the anolyte headspace, the passive gas exchange device configured to release gas from the anolyte headspace to an exterior battery environment when an interior battery pressure exceeds an exterior battery pressure by a predetermined amount, and operating the battery.
    Type: Application
    Filed: July 31, 2017
    Publication date: January 18, 2018
    Applicant: UniEnergy Technologies, LLC
    Inventors: Liyu Li, Guanguang Xia, Jinfeng Wu, Chenxi Sun, Christopher Howard
  • Patent number: 9846116
    Abstract: Methods of determining concentrations and/or amounts of redox-active elements at each valence state in an electrolyte solution of a redox flow battery are provided. Once determined, the concentrations and/or amounts of the redox-active elements at each valence state can be used to determine side-reactions, make chemical adjustments, periodically monitor battery capacity, adjust performance, or to otherwise determine a baseline concentration of the redox-active ions for any purpose.
    Type: Grant
    Filed: April 21, 2014
    Date of Patent: December 19, 2017
    Assignee: UNIENERGY TECHNOLOGIES, LLC
    Inventors: Liyu Li, Yueqi Liu, Chenxi Sun
  • Patent number: 9819039
    Abstract: Redox flow battery systems having a supporting solution that contains Cl? ions can exhibit improved performance and characteristics. Furthermore, a supporting solution having mixed SO42? and Cl? ions can provide increased energy density and improved stability and solubility of one or more of the ionic species in the catholyte and/or anolyte. According to one example, a vanadium-based redox flow battery system is characterized by an anolyte having V2+ and V3+ in a supporting solution and a catholyte having V4+ and V5+ in a supporting solution. The supporting solution can contain Cl? ions or a mixture of SO42? and Cl? ions.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: November 14, 2017
    Assignee: Battelle Memorial Institute
    Inventors: Liyu Li, Soowhan Kim, Zhenguo Yang, Wei Wang, Zimin Nie, Baowei Chen, Jianlu Zhang, Guanguang Xia
  • Patent number: 9722264
    Abstract: A redox flow battery includes an anolyte storage tank configured for containing a quantity of anolyte and an anolyte headspace; a catholyte storage tank configured for containing a quantity of a catholyte and a catholyte headspace; and a gas management system comprising at least one conduit interconnecting the anolyte headspace and the catholyte headspace, and a gas exchange device configured to contain or release an evolving gas from either or both of the anolyte and catholyte storage tanks to an exterior battery environment when an interior battery pressure exceeds an exterior battery pressure by a predetermined amount.
    Type: Grant
    Filed: July 7, 2015
    Date of Patent: August 1, 2017
    Assignee: UniEnergy Technologies, LLC
    Inventors: Liyu Li, Guanguang Xia, Jinfeng Wu, Chenxi Sun, Christopher Howard
  • Patent number: 9368824
    Abstract: Iron-sulfide redox flow battery (RFB) systems can be advantageous for energy storage, particularly when the electrolytes have pH values greater than 6. Such systems can exhibit excellent energy conversion efficiency and stability and can utilize low-cost materials that are relatively safer and more environmentally friendly. One example of an iron-sulfide RFB is characterized by a positive electrolyte that comprises Fe(III) and/or Fe(II) in a positive electrolyte supporting solution, a negative electrolyte that comprises S2? and/or S in a negative electrolyte supporting solution, and a membrane, or a separator, that separates the positive electrolyte and electrode from the negative electrolyte and electrode.
    Type: Grant
    Filed: November 13, 2013
    Date of Patent: June 14, 2016
    Assignee: Battelle Memorial Institute
    Inventors: Guanguang Xia, Zhenguo Yang, Liyu Li, Soowhan Kim, Jun Liu, Gordon L Graff
  • Publication number: 20160049680
    Abstract: In one embodiment of the present disclosure, an electrochemical cell includes a positive portion including a cathode and a catholyte half-cell and a negative portion including an anode and an anolyte half-cell, wherein at least one of the catholyte half-cell and the anolyte half-cell has a plurality of electrolyte flow areas; an ion transfer membrane separating the positive portion and the negative portion; and at least one positive current collector in contact with the cathode and at least one negative current collector in contact with the anode.
    Type: Application
    Filed: August 12, 2015
    Publication date: February 18, 2016
    Applicant: UniEnergy Technologies, LLC
    Inventors: Qingtao Luo, Liyu Li, Lijun Bai, Jinfeng Wu, Richard Winter
  • Publication number: 20160006052
    Abstract: A method of operating a redox flow battery string includes providing a plurality of redox flow batteries, each redox flow battery in electrical communication with at least one other redox flow battery, and each redox flow battery comprising an anolyte storage tank including a quantity of anolyte, a catholyte storage tank including a quantity of catholyte, and an electrochemical cell in fluid communication with the anolyte and catholyte storage tanks; obtaining an open circuit voltage value for each redox flow battery in the string; identifying a predetermined open circuit voltage value in the string; and adjusting the open circuit voltage value for each redox flow battery to correspond to the predetermined open circuit voltage value. A redox flow battery string system includes a plurality of redox flow batteries each redox flow battery in electrical communication with at least one other redox flow battery having an open circuit voltage value.
    Type: Application
    Filed: July 7, 2015
    Publication date: January 7, 2016
    Applicant: UniEnergy Technologies, LLC
    Inventors: Liyu Li, Chenxi Sun, Jinfeng Wu
  • Publication number: 20160006054
    Abstract: A method of operating an all vanadium redox flow battery includes providing an all vanadium redox flow battery comprising an anolyte storage tank including a volume of anolyte and a catholyte storage tank including a volume of catholyte; an electrochemical cell in fluid communication with the anolyte and catholyte storage tanks; and a predetermined range for the ratio of vanadium concentration between the anolyte and the catholyte; and transferring an amount of catholyte from the catholyte storage tank to the anolyte storage tank, or an amount of anolyte from the anolyte storage tank to the catholyte storage tank, to restore the ratio of vanadium concentration to the predetermined range. An all vanadium redox flow battery system includes means for transferring anolyte and catholyte between the anolyte and catholyte storage tanks to maintain a predetermined range for the ratio of vanadium concentration between the anolyte and the catholyte.
    Type: Application
    Filed: July 7, 2015
    Publication date: January 7, 2016
    Applicant: UNIENERGY TECHNOLOGIES, LLC
    Inventors: Liyu Li, Chenxi Sun, Jinfeng Wu, Qingtao Luo, Christopher Howard
  • Publication number: 20160006053
    Abstract: A redox flow battery includes an anolyte storage tank configured for containing a quantity of anolyte and an anolyte headspace; a catholyte storage tank configured for containing a quantity of a catholyte and a catholyte headspace; and a gas management system comprising at least one conduit interconnecting the anolyte headspace and the catholyte headspace, and a gas exchange device configured to contain or release an evolving gas from either or both of the anolyte and catholyte storage tanks to an exterior battery environment when an interior battery pressure exceeds an exterior battery pressure by a predetermined amount.
    Type: Application
    Filed: July 7, 2015
    Publication date: January 7, 2016
    Applicant: UNIENERGY TECHNOLOGIES, LLC
    Inventors: Liyu Li, Guanguang Xia, Jinfeng Wu, Chenxi Sun, Christopher Howard