Patents Assigned to Redflow R&D Pty Ltd.
  • Patent number: 10707469
    Abstract: A separator for a flowing electrolyte battery, and a method of forming such a separator, enable improved efficiency in a flowing electrolyte battery. The separator includes a sheet having a first surface and a second surface opposing the first surface. A first spacer element is disposed on the first surface, and a second spacer element is disposed on the second surface. The first spacer element is wider than the second spacer element in a direction that is both parallel to the first and second surfaces and perpendicular to longitudinal axes of the first and second spacer elements.
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: July 7, 2020
    Assignee: RedFlow R&D Pty Ltd
    Inventor: Alexander Rudolf Winter
  • Patent number: 10549462
    Abstract: A method of forming an integral manifold adjacent a cell stack of a flowing electrolyte battery enables improved bonding of a molten material to the battery cell stack. The method includes defining a mould cavity adjacent the cell stack, with the mould cavity open to capillary openings of half cells of the cell stack; locating a plurality of pins in the mould cavity, with end regions of the pins being contiguous with the capillary openings; preheating the mould cavity by passing a fluid into a first end of the mould cavity and out of a second end of the mould cavity; and filling the mould cavity with molten material.
    Type: Grant
    Filed: July 21, 2015
    Date of Patent: February 4, 2020
    Assignee: REDFLOW R&D PTY. LTD.
    Inventors: Alexander Rudolf Winter, Thomas John
  • Patent number: 10535861
    Abstract: A flowing electrolyte battery can be quickly and safely electrically stripped using electrolyte. The battery includes: a stack comprising a plurality of electrodes; a negative electrolyte circuit coupled to the stack, for circulating negative electrolyte through the stack; a positive electrolyte circuit coupled to the stack, for circulating positive electrolyte through the stack; and a valve coupling the positive electrolyte circuit and the negative electrolyte circuit. The valve includes a closed configuration that prevents flow of electrolyte between the positive electrolyte circuit and the negative electrolyte circuit, and an open configuration that enables flow of electrolyte from at least one of the positive electrolyte circuit and the negative electrolyte circuit to the other of the positive electrolyte circuit and the negative electrolyte circuit. The valve is opened and closed by changes in pressure differences between the positive and the negative electrolyte circuits.
    Type: Grant
    Filed: July 10, 2014
    Date of Patent: January 14, 2020
    Assignee: RedFlow R&D Pty Ltd
    Inventor: Alexander Rudolf Winter
  • Patent number: 10403887
    Abstract: An electrode and a method of manufacturing an electrode for a flowing electrolyte battery enable improved robustness and reduced manufacturing costs of bipolar electrodes for flowing electrolyte batteries. The electrode includes a polymer sheet having a first side and a second side; a graphite layer on the first side; and an activated carbon layer on the second side.
    Type: Grant
    Filed: February 25, 2015
    Date of Patent: September 3, 2019
    Assignee: Redflow R&D Pty Ltd.
    Inventors: Alexander Rudolf Winter, Thomas John
  • Patent number: 9899689
    Abstract: An electrode plate, method for manufacturing an electrode plate, and method of testing an electrode plate enable efficient production of robust flowing electrolyte batteries. The method of testing an electrode plate includes forming a frangible portion in the electrode plate; providing a seal around a periphery of the electrode plate, wherein the periphery extends across the frangible portion; applying a gas adjacent a surface on a first side of the electrode plate; and detecting whether there is a presence of the gas adjacent a surface on a second side of the electrode plate, if the electrode plate passes testing, the frangible portion is removed from the electrode plate to define a cut-away region. The electrode plate is then positioned in a battery cell stack including a plurality of other electrode plates. A manifold is then attached to the cell stack adjacent the cut-away region of the electrode plate.
    Type: Grant
    Filed: October 14, 2014
    Date of Patent: February 20, 2018
    Assignee: REDFLOW R&D PTY LTD
    Inventors: Alexander Rudolf Winter, Thomas John
  • Publication number: 20170170444
    Abstract: A separator for a flowing electrolyte battery, and a method of forming such a separator, enable improved efficiency in a flowing electrolyte battery. The separator includes a sheet having a first surface and a second surface opposing the first surface. A first spacer element is disposed on the first surface, and a second spacer element is disposed on the second surface. The first spacer element is wider than the second spacer element in a direction that is both parallel to the first and second surfaces and perpendicular to longitudinal axes of the first and second spacer elements.
    Type: Application
    Filed: February 13, 2015
    Publication date: June 15, 2017
    Applicant: RedFlow R&D Pty Ltd
    Inventor: Alexander Rudolf WINTER
  • Publication number: 20160254553
    Abstract: An electrode plate, method for manufacturing an electrode plate, and method of testing an electrode plate enable efficient production of robust flowing electrolyte batteries. The method of testing an electrode plate includes forming a frangible portion in the electrode plate; providing a seal around a periphery of the electrode plate, wherein the periphery extends across the frangible portion; applying a gas adjacent a surface on a first side of the electrode plate; and detecting whether there is a presence of the gas adjacent a surface on a second side of the electrode plate, if the electrode plate passes testing, the frangible portion is removed from the electrode plate to define a cut-away region. The electrode plate is then positioned in a battery cell stack including a plurality of other electrode plates. A manifold is then attached to the cell stack adjacent the cut-away region of the electrode plate.
    Type: Application
    Filed: October 14, 2014
    Publication date: September 1, 2016
    Applicant: RedFlow R&D Pty Ltd
    Inventors: Alexander Rudolf WINTER, Thomas JOHN
  • Publication number: 20160111706
    Abstract: A flowing electrolyte battery can be quickly and safely electrically stripped using electrolyte. The battery includes: a stack comprising a plurality of electrodes; a negative electrolyte circuit coupled to the stack, for circulating negative electrolyte through the stack; a positive electrolyte circuit coupled to the stack, for circulating positive electrolyte through the stack; and a valve coupling the positive electrolyte circuit and the negative electrolyte circuit. The valve includes a closed configuration that prevents flow of electrolyte between the positive electrolyte circuit and the negative electrolyte circuit, and an open configuration that enables flow of electrolyte from at least one of the positive electrolyte circuit and the negative electrolyte circuit to the other of the positive electrolyte circuit and the negative electrolyte circuit. The valve is opened and closed by changes in pressure differences between the positive and the negative electrolyte circuits.
    Type: Application
    Filed: July 10, 2014
    Publication date: April 21, 2016
    Applicant: Redflow R&D Pty Ltd
    Inventor: Alexander Rudolf Winter
  • Patent number: 9225042
    Abstract: A method of forming passages of an integral manifold adjacent a cell stack of a flowing electrolyte battery provides enhanced sealing between the manifold and capillary tubes of the cell stack. The method includes forming a mould cavity adjacent the cell stack, with the mould cavity open to capillary openings of cells of the cell stack. A plurality of pins are then located in the mould cavity, with end regions of the pins being contiguous with the capillary openings. The mould cavity is then filled with material and the material is allowed to solidify into a moulded section. The pins are then removed from the moulded section, thereby forming passages in the moulded section which are in fluid communication with the capillary openings.
    Type: Grant
    Filed: August 21, 2009
    Date of Patent: December 29, 2015
    Assignee: RedFlow R&D Pty Ltd
    Inventor: Alexander Rudolf Winter
  • Patent number: 9099722
    Abstract: A recombinator for a flowing electrolyte battery comprises a housing defining a reaction chamber for receiving a halogen source and a hydrogen source. A catalyst is located within the reaction chamber to catalyze the formation of hydrogen halide from the halogen source and the hydrogen source and substantially all of the halogen source, hydrogen source and hydrogen halide within the reaction chamber are maintained in gaseous form.
    Type: Grant
    Filed: October 22, 2010
    Date of Patent: August 4, 2015
    Assignee: Redflow R&D Pty Ltd.
    Inventor: Alexander Rudolf Winter