CN104300165B - A kind of SOC detection devices and methods therefor and flow battery system - Google Patents

A kind of SOC detection devices and methods therefor and flow battery system Download PDF

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Publication number
CN104300165B
CN104300165B CN201410616789.3A CN201410616789A CN104300165B CN 104300165 B CN104300165 B CN 104300165B CN 201410616789 A CN201410616789 A CN 201410616789A CN 104300165 B CN104300165 B CN 104300165B
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electrolyte
soc
current potential
storage tank
electrode portion
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CN104300165A (en
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邹毅
张华民
孙旻
刘宗浩
雷亚宁
韩乐聪
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Dalian Rongke Power Co Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
    • H01M8/04537—Electric variables
    • H01M8/04544—Voltage
    • H01M8/04559—Voltage of fuel cell stacks
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/02—Details
    • H01M8/0289—Means for holding the electrolyte
    • H01M8/0293—Matrices for immobilising electrolyte solutions
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Fuel Cell (AREA)

Abstract

The invention discloses a kind of SOC detection devices and methods therefor and flow battery system, described SOC detection device includes electrolyte container；This electrolyte container includes: anode electrolyte chamber；Electrolyte sap cavity room；Ion-conductive membranes；It is arranged in described anode electrolyte chamber, for detecting the first electrode portion of anode electrolyte current potential；And be arranged in described electrolyte sap cavity room, for detecting the second electrode portion of electrolyte liquid current potential；Described SOC detection device also includes: connect described first electrode portion and the second electrode portion, for according to described anode electrolyte current potential and electrolyte liquid current potential, drawing the potential difference acquisition module of anode electrolyte current potential and the absolute value of the difference of electrolyte liquid current potential；The present invention is capable of the SOC on-line checking of flow battery system, and may be installed the diverse location of flow battery system, it is achieved the SOC detection of multiple points, and then is beneficial to the electrolyte state in management and monitoring flow battery system.

Description

A kind of SOC detection devices and methods therefor and flow battery system
Technical field
The present invention relates to a kind of flow battery technology field, be specially a kind of SOC detection devices and methods therefor and flow battery system.
Background technology
Flow battery system is one of one preferred technique of extensive energy storage, it generally comprises pile, anolyte liquid storage tank, cathode electrolyte storage tank, circulating pump and electrolyte circulation line, anolyte liquid storage tank connects the anode electrolyte entrance of pile through electrolyte circulation line and circulating pump, cathode electrolyte storage tank connects the electrolyte liquid entrance of pile through electrolyte circulation line and circulating pump, the anode electrolyte outlet of pile connects anolyte liquid storage tank through electrolyte circulation line, the electrolyte liquid outlet of pile connects cathode electrolyte storage tank through electrolyte circulation line.Battery charge state i.e. SOC (State Of Charge) is the important parameter of flow battery in use required monitoring, so as to be fully understood by the discharge and recharge degree that flow battery is current, it is that flow battery system realizes accurately controlling and the direct basis of management, actually, flow battery system is in the course of the work, electrolyte in both positive and negative polarity electrolyte storage tank flows through electrolyte circulation line and pile under the promotion of circulating pump, electrochemical reaction is there is in pile, the active material concentration making the electrolyte in entrance pile changes, then during electrolyte returns to both positive and negative polarity electrolyte storage tank, mix with the electrolyte in storage tank, therefore the battery charge state (SOC) of flow battery system diverse location is different；Prior art is usually near the electrolyte of pile is imported and exported and is additionally fixedly installed an independent SOC detection device, this device needs to be configured with the pipe-line system being individually connected with pile, bigger pressure differential is there is between importing and exporting due to the electrolyte of pile, bring certain error often to SOC testing result, additionally, owing to the installation site of SOC detection device is relatively fixed, it is impossible to realize the SOC on-line checking of flow battery system diverse location.
Summary of the invention
The present invention is directed to the proposition of problem above, and develop a kind of SOC detection devices and methods therefor and flow battery system.
The technological means of the present invention is as follows:
A kind of SOC detects device, and described SOC detection device includes electrolyte container；This electrolyte container includes:
Anode electrolyte chamber；
Electrolyte sap cavity room；
It is placed in the ion-conductive membranes between described anode electrolyte chamber and electrolyte sap cavity room；
It is arranged in described anode electrolyte chamber, for detecting the first electrode portion of anode electrolyte current potential；
And be arranged in described electrolyte sap cavity room, for detecting the second electrode portion of electrolyte liquid current potential；
Described SOC detection device also includes:
Connect described first electrode portion and the second electrode portion, for according to described anode electrolyte current potential and electrolyte liquid current potential, drawing the potential difference acquisition module of anode electrolyte current potential and the absolute value of the difference of electrolyte liquid current potential；
Further, described SOC detection device also includes:
Connect potential difference acquisition module, utilize computing formulaCalculating the SOC acquisition module of SOC, wherein x is the absolute value of anode electrolyte current potential and the difference of electrolyte liquid current potential；
Further, described first electrode portion and described second electrode portion have detecting electrode respectively；
Further, described first electrode portion and described second electrode portion are also respectively provided with reference electrode；
Further, during described electrolyte container is removably mounted to the electrolyte circulation line that flow battery system has；
Further, described electrolyte container two ends all removably connect anolyte liquid storage tank and cathode electrolyte storage tank.
The SOC detection method of a kind of SOC as described above detection device, described SOC detection method comprises the steps:
Step 1: electrolyte container is arranged in the electrolyte circulation line that flow battery system has, or electrolyte container two ends are all connected with anolyte liquid storage tank and the cathode electrolyte storage tank that flow battery system has；
Step 2: detect anode electrolyte current potential and electrolyte liquid current potential respectively by the first electrode portion and the second electrode portion；
Step 3: potential difference acquisition module calculates the absolute value of anode electrolyte current potential and the difference of electrolyte liquid current potential；
Further, the most also there are following steps:
Step 4:SOC acquisition module utilizes computing formulaCalculating SOC, wherein x is the absolute value of anode electrolyte current potential and the difference of electrolyte liquid current potential.
A kind of flow battery system, including: anolyte liquid storage tank, cathode electrolyte storage tank, pile and electrolyte circulation line, also include that the SOC described in any of the above-described item detects device.
Owing to have employed technique scheme, a kind of SOC that the present invention provides detects devices and methods therefor and flow battery system, described SOC detection device is capable of the SOC on-line checking of flow battery system, and may be installed the diverse location of flow battery system, simple in construction, easy to use and flexible, and then realize the SOC detection of multiple diverse location, thus it is beneficial to the electrolyte state in management and monitoring flow battery system, improve the service efficiency of flow battery, extend the service life of battery.
Accompanying drawing explanation
Fig. 1, Fig. 2 and Fig. 3 are the structural representations of SOC of the present invention detection device；
Fig. 4, Fig. 5 and Fig. 6 are the schematic diagrames that electrolyte container of the present invention is arranged on flow battery system diverse location；
Fig. 7 is that the absolute value of the difference of anode electrolyte current potential and electrolyte liquid current potential is with the homologous thread schematic diagram between SOC.
In figure: 1, SOC detects device, 2, anolyte liquid storage tank, 3, cathode electrolyte storage tank, 4, pile, 5, circulating pump, 10, anode electrolyte chamber, 11, electrolyte sap cavity room, 12, ion-conductive membranes, 13, detecting electrode, 14, reference electrode, 15, SOC acquisition module, the 16, first pipeline, 17, the second pipeline, 18, the 3rd pipeline, the 19, the 4th pipeline, 20, potential difference acquisition module.
Detailed description of the invention
A kind of SOC as shown in Figure 1, Figure 2 and Figure 3 detects device, and described SOC detection device 1 includes electrolyte container；This electrolyte container includes: anode electrolyte chamber 10；Electrolyte sap cavity room 11；It is placed in the ion-conductive membranes 12 between described anode electrolyte chamber 10 and electrolyte sap cavity room 11；It is arranged in described anode electrolyte chamber 10, for detecting the first electrode portion of anode electrolyte current potential；And be arranged in described electrolyte sap cavity room 11, for detecting the second electrode portion of electrolyte liquid current potential；Described SOC detection device 1 also includes: connect described first electrode portion and the second electrode portion, for according to described anode electrolyte current potential and electrolyte liquid current potential, drawing the potential difference acquisition module 20 of anode electrolyte current potential and the absolute value of the difference of electrolyte liquid current potential；Further, described SOC detection device 1 also includes: connects potential difference acquisition module 20, utilizes computing formulaCalculating the SOC acquisition module 15 of SOC, wherein x is the absolute value of anode electrolyte current potential and the difference of electrolyte liquid current potential；Further, described first electrode portion and described second electrode portion have detecting electrode 13 respectively；Further, described first electrode portion and described second electrode portion are also respectively provided with reference electrode 14.
As shown in Figure 4, Figure 5 and Figure 6, further, during described electrolyte container is removably mounted to the electrolyte circulation line that flow battery system has；Further, described electrolyte container two ends all removably connect anolyte liquid storage tank 2 and cathode electrolyte storage tank 3.
The SOC detection method of a kind of SOC as described above detection device, comprises the steps:
Step 1: electrolyte container is arranged in the electrolyte circulation line that flow battery system has, or electrolyte container two ends are all connected with anolyte liquid storage tank 2 and the cathode electrolyte storage tank 3 that flow battery system has；
Step 2: detect anode electrolyte current potential and electrolyte liquid current potential respectively by the first electrode portion and the second electrode portion；
Step 3: potential difference acquisition module 20 calculates the absolute value of anode electrolyte current potential and the difference of electrolyte liquid current potential；
The most also there are following steps:
Step 4:SOC acquisition module 15 utilizes computing formulaCalculating SOC, wherein x is the absolute value of anode electrolyte current potential and the difference of electrolyte liquid current potential.
As shown in Figure 4, Figure 5 and Figure 6, a kind of flow battery system, including: anolyte liquid storage tank 2, cathode electrolyte storage tank 3, pile 4 and electrolyte circulation line, also include that the SOC described in any of the above-described item detects device 1.
First electrode portion of the present invention is arranged in described anode electrolyte chamber 10, is used for detecting anode electrolyte current potential；Described second electrode portion is arranged in described electrolyte sap cavity room 11, is used for detecting electrolyte liquid current potential；When described first electrode portion and described second electrode portion have detecting electrode 13 respectively, then using current potential measured by the detecting electrode 13 in anode electrolyte chamber 10 as anode electrolyte current potential, measured by detecting electrode 13 in electrolyte sap cavity room 11, current potential is as electrolyte liquid current potential, connect the potential difference acquisition module 20 in the first electrode portion and the second electrode portion by poor to anode electrolyte current potential and electrolyte liquid current potential, draw the absolute value x of anode electrolyte current potential and the difference of electrolyte liquid current potential, described SOC acquisition module 15 can be according to x, pass through computing formulaCalculate SOC, it is also possible to utilize x to pass through other calculation and obtain SOC；nullWhen described first electrode portion and the second electrode portion are in addition to being respectively provided with detecting electrode 13，When being also respectively provided with reference electrode 14，Reference electrode 14 exports known potential numerical value，For the electrode compared as reference during both positive and negative polarity electrolyte potential measurement，Now potential difference acquisition module 20 passes through，Current potential measured by detecting electrode 13 in anode electrolyte chamber 10 deducts the reference electrode 14 in anode electrolyte chamber 10 and exports current potential and draw anode electrolyte current potential，Current potential measured by detecting electrode 13 in electrolyte sap cavity room 11 deducts the reference electrode 14 in electrolyte sap cavity room 11 and exports current potential and draw electrolyte liquid current potential，Further，By poor to anode electrolyte current potential and electrolyte liquid current potential，Draw the absolute value x of anode electrolyte current potential and the difference of electrolyte liquid current potential，Described SOC acquisition module 15 can pass through SOC computing formulaCalculate SOC, it is also possible to utilize x to pass through other calculation and obtain SOC.
Fig. 7 shows that the absolute value x of the difference of anode electrolyte current potential and electrolyte liquid current potential is with the homologous thread schematic diagram between SOC, this curve is to utilize the data that repeatedly flow battery system charge-discharge test obtains to obtain, and utilizes described curve to use curve fit approach to can get the present invention above-mentioned SOC computing formulaSOC detection mode of the present invention can be carried out in flow battery charge and discharge process, i.e. realizes SOC on-line checking, and monitoring result is more directly accurately.
Volume and the shape of the electrolyte container that SOC of the present invention detection device 1 includes are not fixed, can be adjusted according to actual application demand, Fig. 1, Fig. 2 and Fig. 3 respectively illustrates the SOC structure of the detecting device schematic diagram with different structure electrolyte container, wherein, electrolyte container in Fig. 1 has square structure, electrolyte container in Fig. 2 has spherical structure, electrolyte container in Fig. 3 has triangular structure, shape and the structure of the electrolyte container in actual application are not limited thereto, for those of ordinary skill in the art, on the premise of not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Electrolyte container of the present invention may be mounted at multiple diverse locations of flow battery system, and then realize the SOC detection of multiple point, it is specially, described electrolyte container is removably mounted in the electrolyte circulation line that flow battery system has, or described electrolyte container two ends all removably connect anolyte liquid storage tank 2 and cathode electrolyte storage tank 3；Normal electrolyte between positive pole electrolyte storage tank 2, cathode electrolyte storage tank 3 and pile 4 is circulated and there is no any impact.
The most described electrolyte container two ends are all connected with anolyte liquid storage tank 2 and cathode electrolyte storage tank 3, and then realize the electrolyte SOC detection of circulation between anolyte liquid storage tank 2 and cathode electrolyte storage tank 3, Fig. 4 shows that described electrolyte container two ends are all connected with the structural representation of anolyte liquid storage tank and cathode electrolyte storage tank, as shown in Figure 4, further, described anode electrolyte chamber 10 has anode electrolyte entrance and anode electrolyte outlet；Described electrolyte sap cavity room 11 has electrolyte liquid entrance and the outlet of electrolyte liquid；Described SOC detection device 1 can include the pipe-line system removably connected with anolyte liquid storage tank 2 and cathode electrolyte storage tank 3, and this pipe-line system includes: connects anolyte liquid storage tank 2 and the first pipeline 16 of described anode electrolyte entrance, connection cathode electrolyte storage tank 3 and the second pipeline 17 of described electrolyte liquid entrance, connects the outlet of described anode electrolyte and the 3rd pipeline 18 of anolyte liquid storage tank 2 and connect the outlet of described electrolyte liquid and the 4th pipeline 19 of cathode electrolyte storage tank 3；Under this connected mode, anode electrolyte flows out from anolyte liquid storage tank 2, and after the anode electrolyte chamber 10 via SOC detection device 1, flows into anolyte liquid storage tank 2；Electrolyte liquid flows out from cathode electrolyte storage tank 3, and behind the electrolyte sap cavity room 11 via SOC detection device 1, flows into cathode electrolyte storage tank 3.
The most described electrolyte container is removably mounted in the electrolyte circulation line that flow battery system has, further, described SOC detection device 1 may be installed in the pipeline that electrolyte flows into pile 4, and then realize the electrolyte SOC detection flowing into pile 4, Fig. 5 shows that described SOC detection device is arranged on the structural representation in the pipeline of electrolyte inflow pile, as shown in Figure 5, further, described SOC detection device 1 can include the pipe-line system removably connected with anolyte liquid storage tank 2, cathode electrolyte storage tank 3 and pile 4；Further, described anode electrolyte chamber 10 has anode electrolyte entrance and anode electrolyte outlet；Described electrolyte sap cavity room 11 has electrolyte liquid entrance and the outlet of electrolyte liquid；Described pipe-line system includes: connects anolyte liquid storage tank 2 and the first pipeline 16 of described anode electrolyte entrance, connection cathode electrolyte storage tank 3 and the second pipeline 17 of described electrolyte liquid entrance, connects the outlet of described anode electrolyte and the 3rd pipeline 18 of pile 4 and connect the outlet of described electrolyte liquid and the 4th pipeline 19 of pile 4.Under this connected mode, anode electrolyte flows out through circulating pump 5 from anolyte liquid storage tank 2, and after the anode electrolyte chamber 10 via SOC detection device 1, flows into pile 4；Electrolyte liquid flows out through circulating pump from cathode electrolyte storage tank 3, and behind the electrolyte sap cavity room 11 via SOC detection device 1, flows into pile 4；Further, described SOC detection device 1 may be installed in the pipeline that electrolyte flows out pile 4, and then realize the electrolyte SOC detection flowing out pile 4, Fig. 6 shows that described SOC detection device is arranged on the structural representation in the pipeline of electrolyte outflow pile, as shown in Figure 6, further, described SOC detection device 1 can include the pipe-line system removably connected with anolyte liquid storage tank 2, cathode electrolyte storage tank 3 and pile 4；Further, described anode electrolyte chamber 10 has anode electrolyte entrance and anode electrolyte outlet；Described electrolyte sap cavity room 11 has electrolyte liquid entrance and the outlet of electrolyte liquid；Described pipe-line system includes: connects pile 4 and the first pipeline 16 of described anode electrolyte entrance, connection pile 4 and the second pipeline 17 of described electrolyte liquid entrance, connects the outlet of described anode electrolyte and the 3rd pipeline 18 of anolyte liquid storage tank 2 and connect the outlet of described electrolyte liquid and the 4th pipeline 19 of cathode electrolyte storage tank 3.Under this connected mode, anode electrolyte flows out from pile 4, and after the anode electrolyte chamber 10 via SOC detection device 1, flows into anolyte liquid storage tank 2；Electrolyte liquid flows out from pile 4, and behind the electrolyte sap cavity room 11 via SOC detection device 1, flows into cathode electrolyte storage tank 3.
Described electrolyte container installation site in flow battery system during actual application, can be adjusted according to the real needs of SOC detection, may be installed in the pipeline of main line, it is possible to be arranged in bypass line；Owing to SOC detection device 1 removably connects with anolyte liquid storage tank 2, cathode electrolyte storage tank 3 and pile 4, therefore when being not required to utilize SOC to detect device 1, directly can remove SOC from detection position and detect device 1, specifically can realize the connection between anolyte liquid storage tank 2, cathode electrolyte storage tank 3 and pile 4 by the pipe-line system removably connected；It is provided with valve in pipe-line system, when the connection disconnected between pipe-line system and anolyte liquid storage tank, cathode electrolyte storage tank and pile, closes valve.
A kind of SOC that the present invention provides detects devices and methods therefor and flow battery system, described SOC detection device is capable of the SOC on-line checking of flow battery system, and may be installed the diverse location of flow battery system, simple in construction, easy to use and flexible, and then realize the SOC detection of multiple diverse location, thus it is beneficial to the electrolyte state in management and monitoring flow battery system, improve the service efficiency of flow battery, extend the service life of battery.
The above; it is only the present invention preferably detailed description of the invention; but protection scope of the present invention is not limited thereto; any those familiar with the art is in the technical scope that the invention discloses; according to technical scheme and inventive concept equivalent or change in addition thereof, all should contain within protection scope of the present invention.

Claims (9)

1. a SOC detects device, it is characterised in that described SOC detection device (1) includes electrolyte Container；This electrolyte container includes:
Anode electrolyte chamber (10)；
Electrolyte sap cavity room (11)；
It is placed in the ionic conduction between described anode electrolyte chamber (10) and electrolyte sap cavity room (11) Film (12)；
It is arranged in described anode electrolyte chamber (10), for detecting the first electricity of anode electrolyte current potential Pole portion；
And be arranged in described electrolyte sap cavity room (11), for detecting the of electrolyte liquid current potential Two electrode portions；
Described SOC detection device (1) also includes:
Connect described first electrode portion and the second electrode portion, for according to described anode electrolyte current potential and negative pole Electrolyte current potential, draws the potential difference of anode electrolyte current potential and the absolute value of the difference of electrolyte liquid current potential Acquisition module (20).
A kind of SOC the most according to claim 1 detects device, it is characterised in that described SOC detects dress Put (1) also to include:
Connect potential difference acquisition module (20), utilize computing formulaCalculate Going out the SOC acquisition module (15) of SOC, wherein x is the difference of anode electrolyte current potential and electrolyte liquid current potential The absolute value of value.
A kind of SOC the most according to claim 1 detects device, it is characterised in that described first electrode Portion and described second electrode portion have detecting electrode (13) respectively.
A kind of SOC the most according to claim 3 detects device, it is characterised in that described first electrode Portion and described second electrode portion are also respectively provided with reference electrode (14).
A kind of SOC the most according to claim 1 detects device, it is characterised in that described electrolyte holds Device is removably mounted in the electrolyte circulation line that flow battery system has.
A kind of SOC the most according to claim 1 detects device, it is characterised in that described electrolyte holds Device two ends all removably connect anolyte liquid storage tank (2) and cathode electrolyte storage tank (3).
7. the SOC detection method of a SOC as claimed in claim 1 detection device, it is characterised in that institute State SOC detection method to comprise the steps:
Step 1: electrolyte container is arranged in the electrolyte circulation line that flow battery system has, or Electrolyte container two ends are all connected with anolyte liquid storage tank (2) and electrolyte that flow battery system has Liquid storage tank (3)；
Step 2: detect anode electrolyte current potential and electrolyte respectively by the first electrode portion and the second electrode portion Liquid current potential；
Step 3: potential difference acquisition module (20) calculates anode electrolyte current potential and electrolyte liquid current potential The absolute value of difference.
SOC detection method the most according to claim 7, it is characterised in that the most also have Following steps:
Step 4:SOC acquisition module (15) utilizes computing formulaCalculate Going out SOC, wherein x is the absolute value of anode electrolyte current potential and the difference of electrolyte liquid current potential.
9. a flow battery system, including: anolyte liquid storage tank (2), cathode electrolyte storage tank (3), Pile (4) and electrolyte circulation line, it is characterised in that also include described in any one of claim 1 to 6 SOC detection device (1).
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CN106549177B (en) * 2015-09-23 2019-06-28 大连融科储能技术发展有限公司 A kind of flow battery and SOC metering method based on SOC detection device Redundancy Design
CN106654421B (en) * 2015-11-03 2019-08-27 大连融科储能技术发展有限公司 Flow battery actual capacity determines method and device thereof
CN107195944B (en) * 2016-03-14 2019-08-27 大连融科储能技术发展有限公司 A kind of flow battery regulation method and its regulator control system, flow battery
CN106654314B (en) * 2016-11-04 2019-05-24 大连融科储能技术发展有限公司 Electrolyte storage tank and flow battery
CN109546186B (en) * 2017-09-28 2021-11-09 大连融科储能技术发展有限公司 SOC detection device and method for detecting state of electrolyte in flow battery and flow battery system with SOC detection device
CN112803046B (en) * 2020-12-31 2024-04-19 大连融科储能装备有限公司 Flow battery pile with built-in SOC battery
CN112864427B (en) * 2020-12-31 2024-04-02 大连融科储能装备有限公司 On-line monitoring device and method based on state of charge of flow battery

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