公开(公告)号：US10290882B2

公开(公告)日：2019-05-14

申请号：US15535619

申请日：2015-12-16

Applicant: OCI COMPANY LTD.

Inventor： Min-Ki Hong ,  Eun-Sun Oh ,  Hee-Chang Ye ,  Byung-Chul Kim ,  Soo-Whan Kim

IPC: H01M8/04276 ,  H01M8/04537 ,  H01M8/18 ,  H01M8/04791 ,  H01M8/04858 ,  H01M8/04186

Abstract: According to one embodiment of the present invention, the method for controlling the pump speed of a redox flow battery for transferring an electrolyte stored in an electrolyte tank to a cell stack comprises the steps of: measuring the input power and/or the output power of the redox flow battery; measuring the charging power and/or the discharging power of the redox flow battery; calculating the power loss of the redox flow battery by using the difference between the input power and the charging power, or the difference between the output power and the discharging power; and adjusting the pump speed according to the power loss.

公开(公告)号：US09966626B2

公开(公告)日：2018-05-08

申请号：US15119908

申请日：2015-02-16

Applicant: OCI COMPANY LTD.

Inventor： Ji-Eun Hong ,  Seung-Yoen Lee ,  Soo-Whan Kim ,  Hee-Chang Ye ,  Byung-Chul Kim

IPC: H01M8/18 ,  H01M8/20 ,  H01M8/02

CPC classification number: H01M8/188 ,  H01M8/02 ,  H01M8/20 ,  Y02E60/528

Abstract: The present invention relates to a redox flow battery, and more particularly, to a redox flow battery which is charged and discharged by supplying a positive electrolyte and a negative electrolyte to a battery cell using an active material containing vanadium and a cation exchange membrane, in which the positive electrolyte and the negative electrolyte contain vanadium ions as active ions, the difference in volume between the positive electrolyte and the negative electrolyte is maintained at 10% or less, and the total concentration of anions in the negative electrolyte is higher than the total concentration of anions in the positive electrolyte, whereby the transfer of water in the battery is controlled and a change in the volume of the electrolytes is minimized.

公开(公告)号：US09419294B2

公开(公告)日：2016-08-16

申请号：US14572152

申请日：2014-12-16

Applicant: OCI COMPANY LTD.

Inventor： Ji-Young Lee ,  Seung-Yoen Lee ,  Jae-Min Kim ,  Soo-Whan Kim ,  Hee-Chang Ye

IPC: H01M8/06 ,  H01M8/04 ,  H01M8/18 ,  H01M8/20 ,  H01M10/48

CPC classification number: H01M8/04611 ,  H01M8/04552 ,  H01M8/04865 ,  H01M8/188 ,  H01M8/20 ,  H01M10/484 ,  Y02E60/528

Abstract: A method and apparatus for controlling operation of a redox flow battery. The method of controlling operation of a redox flow battery includes obtaining a diffusivity of anolyte ions with respect to a separator, obtaining a diffusivity of catholyte ions with respect to the separator, determining electrolyte diffusivities depending upon a state of charge value of the redox flow battery based on the diffusivity of the anolyte ions and the diffusivity of the catholyte ions, determining a minimum state of charge value and a maximum state of charge value of the redox flow battery based on the electrolyte diffusivities, and setting operating conditions of the redox flow battery based on the minimum state of charge value and the maximum state of charge value. The method and apparatus for controlling operation of a redox flow battery can prevent reduction in capacity of the redox flow battery.

Abstract translation: 一种用于控制氧化还原液流电池的操作的方法和装置。 控制氧化还原液流电池的操作的方法包括获得阳极电解离子相对于隔板的扩散率，获得阴极电解离子相对于隔板的扩散率，根据氧化还原液流电池的充电状态值确定电解质扩散率 基于阳极电解质离子的扩散性和阴极电解液离子的扩散性，基于电解质扩散性确定氧化还原液流电池的最小充电电荷值和最大充电电荷值，并且设定氧化还原液流电池的工作条件 基于最小充电状态值和最大充电状态值。 用于控制氧化还原液流电池的操作的方法和装置可以防止氧化还原液流电池的容量降低。