公开(公告)号：US20150180068A1

公开(公告)日：2015-06-25

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: H01M8/04 ,  H01M8/20 ,  H01M8/18

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膜的扩散率，根据氧化还原液流电池的电荷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。

公开(公告)号：US20150226806A1

公开(公告)日：2015-08-13

申请号：US14615828

申请日：2015-02-06

Applicant: OCI COMPANY LTD.

Inventor： Jae-Min KIM ,  Ji-Young LEE ,  Seung-Yoen LEE ,  Soo-Whan KIM ,  Hee-Chang YE

IPC: G01R31/36 ,  H01M8/18 ,  H01M8/20 ,  H01M8/04

CPC classification number: H01M8/04544 ,  G01R31/378 ,  H01M8/04552 ,  H01M8/04582 ,  H01M8/04753 ,  H01M8/188 ,  H01M8/20 ,  Y02E60/528

Abstract: A system for evaluating a redox flow battery according to an embodiment of the present disclosure includes: a control unit configured to control the path of a flow channel connected between a detection cell and the redox flow battery or a flow channel connected between the detection cell and an agitator; and an evaluation unit configured to evaluate any one of the state of charge, capacity fade and oxidation number balance of an electrolyte, which is used in the redox flow battery, by measuring a current or voltage of the detection cell based on the controlling of the path by the control unit. According to the present disclosure, the capacity fade problem of a redox flow battery can be quickly coped with by evaluating the information of the positive and negative electrode electrolytes on battery capacity fade and information about the valence balance of the electrolytes in situ.

Abstract translation: 根据本公开的实施例的用于评估氧化还原液流电池的系统包括：控制单元，被配置为控制连接在检测单元和氧化还原液流电池之间的流路的路径或连接在检测单元与 搅拌器 以及评估单元，其被配置为通过基于所述检测单元的控制来测量所述检测单元的电流或电压来评估所述氧化还原液流电池中使用的电解质的充电状态，容量衰减和氧化数量平衡中的任何一种 控制单元的路径。 根据本公开，通过评估电池容量衰减的正极和负极电解质的信息以及关于电解质原位的价态平衡的信息，可以快速应对氧化还原液流电池的容量衰退问题。

公开(公告)号：US20170155158A1

公开(公告)日：2017-06-01

申请号：US15361168

申请日：2016-11-25

Applicant: OCI COMPANY LTD.

Inventor： Jae-Min KIM ,  Myung-Sup UM ,  Soo-Whan KIM ,  Hee-Chang YE

IPC: H01M8/04791 ,  H02J7/00 ,  H01M8/0432 ,  H01M8/0444 ,  H01M8/20 ,  H01M8/18

CPC classification number: H01M8/0482 ,  H01M8/04328 ,  H01M8/04335 ,  H01M8/04365 ,  H01M8/04447 ,  H01M8/04455 ,  H01M8/04559 ,  H01M8/188 ,  H01M8/20 ,  H02J7/007 ,  Y02E60/528

Abstract: A method for measuring an electrolyte balance of a redox flow battery may include: charging the redox flow battery by applying a current to a stack; measuring temperatures of an anode electrolyte solution and a cathode electrolyte solution while the redox flow battery is charged; calculating a temperature change rate of the anode electrolyte solution over time and a temperature change rate of the cathode electrolyte solution over time; deciding a first change time corresponding to an inflection point of the temperature change rate of the anode electrolyte solution over time and a second change time corresponding to an inflection point of the temperature change rate of the cathode electrolyte solution over time; and calculating an average electrolyte oxidation number of the redox flow battery, using the first change time, the second change time, an oxidation number of the anode electrolyte and an oxidation number of the cathode electrolyte.

公开(公告)号：US20170346114A1

公开(公告)日：2017-11-30

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 ,  H01M8/18 ,  H01M8/04537

CPC classification number: H01M8/04276 ,  H01M8/04611 ,  H01M8/0482 ,  H01M8/188 ,  Y02E60/528

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：US20170054172A1

公开(公告)日：2017-02-23

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 ,  H01M8/02 ,  H01M8/20

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.

Abstract translation: 本发明涉及一种氧化还原液流电池，更具体地说，涉及通过使用含有钒和阳离子交换膜的活性物质向电池单体供给正电解质和负电解质而进行充放电的氧化还原液流电池， 正电解质和负电解质含有钒离子作为活性离子，正电解质和负电解质之间的体积差保持在10％以下，负电解质中阴离子的总浓度高于总电解质 正电解液中阴离子的浓度被控制，从而电池中的水的转移受到控制，并且电解质的体积变化被最小化。

公开(公告)号：US20150153421A1

公开(公告)日：2015-06-04

申请号：US14556017

申请日：2014-11-28

Applicant: OCI COMPANY LTD.

Inventor： Min-Ki HONG ,  Byung-Man KANG ,  Soo-Whan KIM ,  byung-Chul KIM ,  Hee-Chang YE

IPC: G01R31/36

CPC classification number: G01R31/3648 ,  G01R31/385 ,  G01R31/396 ,  H01M8/04 ,  H01M8/04194 ,  H01M8/188 ,  Y02E60/528

Abstract: Disclosed are a method and apparatus for analyzing an electrolyte of a redox flow battery. The method includes passing a first electrolyte solution or a second electrolyte solution through each of a first auxiliary cell and a second auxiliary cell connected to a main cell and a storage tank, closing at least one of the first auxiliary cell and the second auxiliary cell, applying current to the first auxiliary cell and the second auxiliary cell; creating data by measuring a voltage between the first auxiliary cell and the second auxiliary cell, and analyzing an electrolyte contained in the electrolyte solution in the first auxiliary cell or the second auxiliary cell based on variation in the voltage between the first auxiliary cell and the second auxiliary cell according to time. According to the present invention, information on an electrolyte can be obtained more efficiently and easily.

Abstract translation: 公开了一种用于分析氧化还原液流电池的电解质的方法和装置。 该方法包括使第一电解质溶液或第二电解质溶液通过连接到主电池和存储箱的第一辅助电池和第二辅助电池中的每一个，闭合第一辅助电池和第二辅助电池中的至少一个， 向第一辅助电池和第二辅助电池施加电流; 通过测量第一辅助电池和第二辅助电池之间的电压来产生数据，并且基于第一辅助电池和第二辅助电池之间的电压的变化来分析包含在第一辅助电池或第二辅助电池中的电解质溶液中的电解质 辅助细胞根据时间。 根据本发明，可以更有效且容易地获得关于电解质的信息。