| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 429051000 | Electrolyte circulation | 33 |
| 20130045399 | Flow Battery with Reactant Separation - An embodiment relates an electrochemical system. The system includes (a) at least one cell that comprises a first electrode, a second electrode and a reaction zone between the first and second electrode. The system also includes (b) a liquefied halogen reactant (c) at least one metal halide electrolyte and (d) a flow circuit configured to deliver the halogen reactant and the at least one metal-halide electrolyte to the at least one cell. The flow circuit includes an electrolyte reservoir and a halogen reactant/electrolyte separation device comprising a halophilic material. | 02-21-2013 |
| 20130045400 | REDOX FLOW BATTERY - Provided are a redox flow battery (RF battery) in which a positive electrode electrolyte and a negative electrode electrolyte are supplied to a battery cell including a positive electrode, a negative electrode, and a membrane, to charge and discharge the battery, and a method of operating the RF battery. The positive electrode electrolyte contains a manganese ion, or both of a manganese ion and a titanium ion. The negative electrode electrolyte contains at least one type of metal ion selected from a titanium ion, a vanadium ion, a chromium ion, a zinc ion, and a tin ion. The RF battery can have a high electromotive force and can suppress generation of a precipitation of MnO | 02-21-2013 |
| 20120183816 | QUENCHING SYSTEM - A quencher for a flow cell battery is described. The quencher utilizes a quench solution formed from FeCl | 07-19-2012 |
| 20130040171 | ENERGY STORAGE DEVICE AND ASSOCIATED METHOD - An energy storage device is provided that includes a reservoir in operative communication with a positive electrode such that the positive electrode remains fully flooded, even at the top of the charge cycle. The device more particularly includes a housing receiving therein, in a coaxial manner, an ion conducting member, and a current collector member received coaxially within the ion conducting member. In this device, a first region is provided in the space between the housing and the ion conducting member and a second region is provided in the space between the ion conducting member and the current collector member. The interior of the current collector member defines a reservoir having a certain volume at least equal to the volume of the void space created in the second region during charging of the device. | 02-14-2013 |
| 20130029186 | ELECTROLYTE INJECTION DEVICE AND ELECTROLYTE INJECTION METHOD - A battery case is disposed in a decompression chamber. An electrolyte in an aeration tank is injected into the battery case in the decompression chamber using a liquid injection nozzle. By exposing the electrolyte to an ambient pressure in the decompression chamber within the aeration tank before supplying the electrolyte to the liquid injection nozzle, a pressure of the electrolyte is regulated to a pressure in the decompression chamber, and gas molecules in the electrolyte are separated therefrom. By providing the aeration tank, an efficiency with which the gas molecules are separated from the electrolyte is improved, and as a result, the electrolyte is injected into the battery case smoothly. | 01-31-2013 |
| 20130029187 | HIGH PERFORMANCE FLOW BATTERY - High performance flow batteries, based on alkaline zinc/ferro-ferricyanide rechargeable (“ZnFe”) and similar flow batteries, may include one or more of the following improvements. First, the battery design has a cell stack comprising a low resistance positive electrode in at least one positive half cell and a low resistance negative electrode in at least one negative half cell, where the positive electrode and negative electrode resistances are selected for uniform high current density across a region of the cell stack. Second, a flow of electrolyte, such as zinc species in the ZnFe battery, with a high level of mixing through at least one negative half cell in a Zn deposition region proximate a deposition surface where the electrolyte close to the deposition surface has sufficiently high zinc concentration for deposition rates on the deposition surface that sustain the uniform high current density. The mixing in the flow may be induced by structures such as: conductive and non-conductive meshes; screens; ribbons; foam structures; arrays of cones, cylinders, or pyramids; and other arrangements of wires or tubes used solely or in combination with a planar electrode surface. Third, the zinc electrolyte has a high concentration and in some embodiments has a concentration greater than the equilibrium saturation concentration—the zinc electrolyte is super-saturated with Zn ions. | 01-31-2013 |
| 20130029185 | Electrochemical System Having a System for Determining a State of Charge - An electrochemical system, such as a flow battery, includes a vessel. The vessel contains at least one cell that includes a first electrode, a second electrode and a reaction zone between the first and second electrodes. The vessel also contains a flow circuit configured to deliver a fluid comprising a liquefied halogen reactant and at least one metal halide electrolyte to the at least one cell, and at least one sensor configured to measure a property of the electrochemical system indicative of a state of charge (SOC) of the electrochemical system. | 01-31-2013 |
| 20130059177 | LI-ION/POLYSULFIDE FLOW BATTERY - Li-Ion/Polysulfide flow battery systems are provided to achieve high energy density and long service life. The system is configured to minimize corrosion of the lithium electrode by providing an electrochemical reactor comprising a first and a second electrode configured in spaced apart relation defining an inter-electrode channel through which the sulfur electrolyte is caused to flow. | 03-07-2013 |
| 20120189880 | ELECTROCHEMICAL POWER DELIVERY VOLTAGE REGULATOR - An electrochemical power delivery voltage regulator. The regulator includes one or more fluid circuits having a first electrolyte solution with a primary redox couple and a secondary redox couple; and a second electrolyte solution with a further primary redox couple; a polyelectrode in contact with the first electrolyte solution; a further electrode in contact with the second electrolyte solution; and control means coupled to control a relative concentration of electroactive species of the secondary redox couple and thereby impact a mixed potential at the polyelectrode, such as to regulate a supply voltage of the electrochemical power delivery voltage regulator, in operation. The invention further concerns a corresponding method of voltage regulation and a system comprising such an electrochemical power and electrical consumers with consumer fluid circuits in fluid communication with respective one or more fluid circuits of the electrochemical power delivery voltage regulator. | 07-26-2012 |
| 20090197151 | METHOD FOR OPERATING REDOX FLOW BATTERY AND REDOX FLOW BATTERY CELL STACK - The invention provides an operating method of a redox flow battery capable of grasping a charging state of the battery more reliably to stabilize an output capacity of the battery. The method is for operating the redox flow battery comprising a cell stack | 08-06-2009 |
| 20100086834 | ENERGY STORAGE DEVICE AND ASSOCIATED METHOD - An energy storage device is provided that includes a separator having a first surface and a second surface. The first surface defines at least a portion of a cathodic chamber, and the second surface defines an anodic chamber. The cathodic chamber includes an alkali metal halide that forms an ion that is capable of conducting through the separator. The anodic chamber has a volume that is filled with a consumable fluid. The amount of the consumable fluid is greater than 90 percent by volume of the anodic chamber volume. Furthermore, the consumable fluid is reactive with an ionic species of the alkali metal halide. A method of sealing the energy storage device is also provided. | 04-08-2010 |
| 20110200853 | Shunt current interruption in electrochemical energy generation system - An electrochemical energy generation system includes plural electrochemical cells connected electrically in series that utilize a common electrolyte that can be delivered to each of the cells and/or collected from each of the cells using one or more manifolds. The system provides a possibility for reducing shunt currents by applying a shunt-current minimizing voltage to terminals of the manifolds from the terminal electrodes of the cells connected in series. | 08-18-2011 |
| 20130011702 | Redox Flow Battery System with Divided Tank System - A redox flow battery system is provided with one or more tanks for containing electrolytes. Embodiments of electrolyte tanks include active and/or passive dividers within a single tank structure. Dividers may be configured to prevent mixing of a charged electrolyte and a discharged electrolyte stored within a single tank. | 01-10-2013 |
| 20120045669 | Flowing Electrolyte Battery With Electric Potential Neutralization - Flowing electrolyte batteries capable of being selectively neutralized chemically; processes of selectively neutralizing flowing electrolyte batteries chemically; and processes of selectively restoring the electrical potential of flowing electrolyte batteries are disclosed herein. | 02-23-2012 |
| 20090186259 | ELECTRIC STORAGE BATTERIES WITH ELECTROLYTE AGITATION - The invention provides a gauntlet for tubular type electric storage batteries with air mixing of the electrolyte, the gauntlet including multiple individual tubes forming a cartridge belt type gauntlet, where the walls of at least one of these individual tubes are substantially impermeable to air, as well as a process for its manufacture. The invention further pertains to an electric storage battery using such gauntlets. | 07-23-2009 |
| 20120244395 | FLOW BATTERY WITH INTERDIGITATED FLOW FIELD - A flow battery includes a first liquid-porous electrode, a second liquid-porous electrode spaced apart from the first liquid-porous electrode, and an ion-exchange membrane arranged between the first liquid-porous electrode and the second liquid-porous electrode. First and second flow fields are adjacent to the respective first liquid-porous electrode and second liquid-porous electrode. Each of the flow fields includes first channels having at least partially blocked outlets and second channels having at least partially blocked inlets. The second channels are interdigitated with the first channels. The flow fields provide a configuration and method of operation for relatively thin electrodes with moderate pressure drops and forced convective flow through the liquid-porous electrodes. | 09-27-2012 |
| 20110014505 | LIQUID ELECTRODE BATTERY - An electrochemical battery that exchanges energy with an external device. The battery includes a container containing a positive electrode, a negative electrode and an intervening electrolyte, the electrodes and electrolyte existing as liquid material layers in the container at the operating temperature of the battery so that adjacent layers form respective electrode-electrolyte interfaces. Positive and negative current collectors are in electrical contact with the positive and negative electrodes, respectively, both collectors being adapted for connection to the external device to create a circuit through which current flows. A circulation producer in the battery causes circulation within at least one of the layers to increase the flux of material in one layer to an interface with an adjacent layer, thereby giving the battery a greater current/power capability. | 01-20-2011 |
| 20110076526 | ELECTROLYTE COMPOSITIONS - An electrolyte for a flow cell battery is provided. The electrolyte includes a concentration of chromium ions that is greater than the concentration of iron ions. | 03-31-2011 |
| 20110070469 | SUPPLYING POWER FOR A MICRO SYSTEM - A micro system power supply ( | 03-24-2011 |
| 20110070468 | ELECTROCHEMICAL ENERGY CELL SYSTEM - A metal halogen electrochemical energy cell system that generates an electrical potential. One embodiment of the system includes at least one cell including at least one positive electrode and at least one negative electrode, at least one electrolyte, a mixing venturi that mixes the electrolyte with a halogen reactant, and a circulation pump that conveys the electrolyte mixed with the halogen reactant through the positive electrode and across the metal electrode. Preferably, the positive electrode comprises porous carbonaceous material, the negative electrode comprises zinc, the metal comprises zinc, the halogen comprises chlorine, the electrolyte comprises an aqueous zinc-chloride electrolyte, and the halogen reactant comprises a chlorine reactant. Also, variations of the system and a method of operation for the systems. | 03-24-2011 |
| 20120202095 | RECOMBINATOR FOR FLOWING ELECTROLYTE BATTERY - 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 catalyse 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. | 08-09-2012 |
| 20090023052 | SOLAR TO ELECTRICAL ENERGY CONVERSION USING THE STREAMING POTENTIAL - A system and method is presented that uses solar power driven expansion of an electrolytic solution to force the electrolytic solution from a container through at least one pore of an insulator having a fixed surface charge of one polarity into a collection receptacle. The velocities of the cations and anions flowing through the pore differ because of the fixed surface charge of the pore and this produces an electrical charge separation, the streaming potential, as a source of electrical power. Energy absorption spans the full solar spectrum including infrared, visible and near ultraviolet wavelengths. | 01-22-2009 |
| 20090239131 | Electrochemical energy cell system - A metal halogen electrochemical energy cell system that generates an electrical potential. One embodiment of the system includes at least one cell including at least one positive electrode and at least one negative electrode, at least one electrolyte, a mixing venturi that mixes the electrolyte with a halogen reactant, and a circulation pump that conveys the electrolyte mixed with the halogen reactant through the positive electrode and across the metal electrode. Preferably, the negative electrodes are made of zinc, the metal is zinc, the positive electrodes are made of porous carbonaceous material, the halogen is chlorine, the electrolyte is an aqueous zinc-chloride electrolyte, and the halogen reactant is a chlorine reactant. Also, variations of the system and a method of operation for the systems. | 09-24-2009 |
| 20120058370 | Flow Battery With Radial Electrolyte Distribution - An electrochemical flow cell includes a permeable electrode, an impermeable electrode located adjacent to and spaced apart from the permeable electrode and a reaction zone electrolyte flow channel located between a first side of the permeable electrode and a first side of the impermeable electrode. The electrochemical flow cell also includes at least one electrolyte flow channel located adjacent to a second side of the permeable electrode, at least one central electrolyte flow conduit extending through a central portion of the permeable electrode and through a central portion of the impermeable electrode and at least one peripheral electrolyte flow inlet/outlet located in a peripheral portion of the electrochemical cell above or below the permeable electrode. | 03-08-2012 |
| 20100092843 | VENTURI PUMPING SYSTEM IN A HYDROGEN GAS CIRCULATION OF A FLOW BATTERY - A redox flow battery system is presented that utilizes a rebalancing cell. A pump based on the Venturi principle is coupled to the rebalancing cell in order to actively circulate hydrogen gas through the rebalancing cell. The venturi pump requires no moving parts which eliminates problems of reliability and cost. Utilizing the venturi pump to actively circulate gas can significantly enhanced the function of the rebalance cell thereby providing enhanced capacity and performance of the flow battery system. | 04-15-2010 |
| 20090130539 | ELECTRIC POWER GRID BUFFER - An electric power grid buffer for storing electric energy by converting low energy electrochemistry waste into higher energy electrochemistry fuel and supplying electric energy to an electric power grid by discharging the higher energy electrochemistry fuel under production of low energy electrochemistry waste. In one embodiment, the electric power grid buffer stores electric energy generated by renewable energy sources, such as wind power or solar cells, and supplies an electric current to an electric power grid such that the renewable energy source is completely isolated from the electric power grid. | 05-21-2009 |
| 20100009243 | ELECTROCHEMICAL ENERGY CELL SYSTEM - A metal halogen electrochemical energy cell system that generates an electrical potential. One embodiment of the system includes at least one cell including at least one positive electrode and at least one negative electrode, at least one electrolyte, a mixing venturi that mixes the electrolyte with a halogen reactant, and a circulation pump that conveys the electrolyte mixed with the halogen reactant through the positive electrode and across the metal electrode. Preferably, the positive electrode comprises porous carbonaceous material, the negative electrode comprises zinc, the metal comprises zinc, the halogen comprises chlorine, the electrolyte comprises an aqueous zinc-chloride electrolyte, and the halogen reactant comprises a chlorine reactant. Also, variations of the system and a method of operation for the systems. | 01-14-2010 |
| 20120082873 | CROSS-FLOW ELECTROCHEMICAL BATTERIES - A cross-flow electrochemical cell for producing electricity is disclosed that incorporates means for cross-flow pumping of electrolyte through both anode and cathode electrodes in the same direction to achieve markedly higher discharging and charging currents. Cross-flow pumping enabling use of thick mesh electrodes comprising scaffolds impregnated with high-surface-area metal nanoparticles and having high porosity are also taught. | 04-05-2012 |
| 20120270079 | BROMINE COMPLEX VALVE - A zinc-bromine flowing electrolyte battery comprising a negative electrolyte pump to circulate negative electrolyte within a negative electrolyte circulation path, a positive electrolyte pump to circulate positive electrolyte within a positive electrolyte circulation path and having complexed bromine located within a positive electrolyte tank, the positive electrolyte tank in fluid communication with the positive electrolyte circulation path. In use, preferential activation of either of the negative electrolyte pump or the positive electrolyte pump will determine whether positive electrolyte only or a positive electrolyte and complexed bromine mix are circulated within the positive electrolyte circulation path. | 10-25-2012 |
| 20120321920 | SYSTEM AND METHOD FOR OPERATING A FLOW BATTERY SYSTEM AT AN ELEVATED TEMPERATURE - A flow battery system includes a flow battery stack, a sensor and a coolant loop. The flow battery stack has an electrolyte solution flowing therethrough, and the sensor is in communication with the electrolyte solution. The coolant loop is in heat exchange communication with the electrolyte solution, wherein the heat exchange communication is selective based on an output from the sensor. | 12-20-2012 |
| 20110244277 | HIGH PERFORMANCE FLOW BATTERY - High performance flow batteries, based on alkaline zinc/ferro-ferricyanide rechargeable (“ZnFe”) and similar flow batteries, may include one or more of the following improvements. First, the battery design has a cell stack comprising a low resistance positive electrode in at least one positive half cell and a low resistance negative electrode in at least one negative half cell, where the positive electrode and negative electrode resistances are selected for uniform high current density across a region of the cell stack. Second, a flow of electrolyte, such as zinc species in the ZnFe battery, with a high level of mixing through at least one negative half cell in a Zn deposition region proximate a deposition surface where the electrolyte close to the deposition surface has sufficiently high zinc concentration for deposition rates on the deposition surface that sustain the uniform high current density. The mixing in the flow may be induced by structures such as: conductive and non-conductive meshes; screens; ribbons; foam structures; arrays of cones, cylinders, or pyramids; and other arrangements of wires or tubes used solely or in combination with a planar electrode surface. Third, the zinc electrolyte has a high concentration and in some embodiments has a concentration greater than the equilibrium saturation concentration—the zinc electrolyte is super-saturated with Zn ions. | 10-06-2011 |
| 20120328910 | Electrolyte Flow Configuration for a Metal-Halogen Flow Battery - A flow battery and method of operating a flow battery. The flow battery includes a first electrode, a second electrode and a reaction zone located between the first electrode and the second electrode. The flow battery is configured with a first electrolyte flow configuration in charge mode and a second flow configuration in discharge mode. The first electrolyte flow configuration is at least partially different from the second electrolyte flow configuration. | 12-27-2012 |
| 20120328911 | SYSTEM AND METHOD FOR OPTIMIZING EFFICIENCY AND POWER OUTPUT FROM A VANADIUM REDOX BATTERY ENERGY STORAGE SYSTEM - An energy storage system includes a vanadium redox battery that interfaces with a control system to optimize performance and efficiency. The control system calculates optimal pump speeds, electrolyte temperature ranges, and charge and discharge rates. The control system instructs the vanadium redox battery to operate in accordance with the prescribed parameters. The control system further calculates optimal temperature ranges and charge and discharge rates for the vanadium redox battery. | 12-27-2012 |
