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    • 2. 发明申请
    • ESTIMATION OF THE STATE OF CHARGE OF A POSITIVE ELECTROLYTE SOLUTION OF A WORKING REDOX FLOW BATTERY CELL WITHOUT USING ANY REFERENCE ELECTRODE
    • 不使用任何参考电极的工作式回流电池电极的正电解质溶液充电状态的估计
    • WO2014184617A1
    • 2014-11-20
    • PCT/IB2013/054005
    • 2013-05-16
    • HYDRAREDOX TECHNOLOGIES HOLDINGS LTD.SPAZIANTE, Placido MariaDICHAND, Michael
    • SPAZIANTE, Placido MariaDICHAND, Michael
    • G01R31/36G01N27/416H01M8/04
    • H01M8/04477G01N27/403G01R31/3634G01R31/3651H01M8/04455H01M8/188H01M8/20Y02E60/528
    • A measure of the state of charge of the positive electrolyte solution of a working redox flow battery without using a reference electrode is obtained by using an undivided cell assembly comprising a stable electro catalytic metal electrode and a porous carbon base counter-electrode, immersed in the positive electrolyte solution of an all vanadium battery. In the interval between about 0.35V and 0.45V, a spread out of the voltage- current characteristic curves is at maximum of amplitude and allows an excellent discrimination of the state of oxidation of vanadium by locating the point on the voltage-current plane, on which the characteristic curves at different known degrees of oxidation have been recorded during a calibration work carried out on the specific undivided cell sensor to be used thereafter for monitoring the state of charge of the positive electrolyte solution. In operation, the undivided cell sensor immersed at any desirable point of the positive electrolyte circuit is constantly supplied at a controlled fixed DC bias voltage between the positive metal electrode and the porous carbon counter-electrode by an appropriate voltage regulator of adequate power capability, or cyclically at two or more different voltages, all within a range that includes the region between 0.35V and 0.45V, measuring simultaneously the current flowing across the undivided cell sensor at the fixed voltage or voltages bias. By correlating the paired voltage and current values, using a look up table compiled at calibration, estimated values of the degree of oxidation or state of charge of the redox ion couple of the positive electrolyte solution are produced.
    • 通过使用包含稳定的电催化金属电极和多孔碳基对置电极的未分割的电池组件,浸没在所述电极中的方法,获得不使用参考电极的工作氧化还原液流电池的正电解液的充电状态的测量 全钒电池的正电解液。 在约0.35V至0.45V之间的间隔内,电压 - 电流特性曲线的扩展幅度最大,通过将电压 - 电流平面上的点定位,可以很好地区分钒的氧化状态 其中在不同已知氧化程度下的特性曲线已经在用于监测正电解液的电荷状态的特定未分割电池传感器上进行的校准工作中被记录。 在正常电解质电路的任何希望点处浸没的未分隔电池传感器通过适当的功率能力的适当的电压调节器以正的金属电极和多孔碳对电极之间的受控固定的DC偏压恒定地供应,或 循环地在两个或更多个不同的电压下,全部在包括0.35V和0.45V之间的范围内,同时测量在固定电压或电压偏压下流过未分隔的电池传感器的电流。 通过将成对的电压和电流值相关联,使用在校准时编译的查找表,产生正电解质溶液的氧化还原离子对的氧化程度或电荷状态的估计值。