CN219435012U - Device for testing SOC-OCV of all-vanadium redox flow battery - Google Patents

Device for testing SOC-OCV of all-vanadium redox flow battery Download PDF

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CN219435012U
CN219435012U CN202320725128.9U CN202320725128U CN219435012U CN 219435012 U CN219435012 U CN 219435012U CN 202320725128 U CN202320725128 U CN 202320725128U CN 219435012 U CN219435012 U CN 219435012U
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positive electrode
negative electrode
liquid
end plate
positive
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王宇
熊仁海
鲁昆昆
王宇攀
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Hangzhou Dehai Aike Energy Technology Co ltd
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Hangzhou Dehai Aike Energy Technology Co ltd
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    • 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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Abstract

The utility model discloses a device for testing the SOC-OCV of an all-vanadium redox flow battery. By adopting the mode, the use of pipelines, pumps, electric energy and the like is reduced, the occupied area is reduced, the installation is convenient, the simplicity and the integration degree of the SOC test device are improved, and the method has wide application prospect in the field of flow batteries.

Description

Device for testing SOC-OCV of all-vanadium redox flow battery
Technical Field
The utility model relates to the technical field of all-vanadium redox flow batteries, in particular to a device for testing SOC-OCV of an all-vanadium redox flow battery.
Background
The data of open circuit voltage (OCV, open Circuit Voltage) corresponding to State of Charge (SOC) under different temperature conditions is tested through a test in the all-vanadium redox flow battery, a multidimensional relation curve between the SOC and the OCV is fitted, and the SOC is estimated through measuring the OCV.
In the conventional all-vanadium redox flow battery SOC-OCV testing device, electrolyte is mainly introduced into the device through a pump and a branch to perform redox reaction, and the SOC of the battery is calculated through testing the OCV. The SOC-OCV testing device has the problems of large installation space, high energy consumption, complex pipeline structure and the like.
In order to solve the problems, the utility model provides a basic structure and a manufacturing thought of a device for testing the SOC-OCV of the all-vanadium redox flow battery.
Disclosure of Invention
The utility model provides a device for testing SOC-OCV of an all-vanadium redox flow battery; the SOC-OCV testing device is directly integrated on a pipeline of a pile, so that the use of pipelines, pumps, electric energy and the like is reduced, the occupied area is reduced, and the simplicity and the integration degree of the SOC testing device are improved.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the application discloses a device for SOC-OCV test of an all-vanadium redox flow battery, which comprises an anode end plate, a cathode end plate, a liquid inlet pipe and a liquid outlet pipe, wherein the anode end plate and the cathode end plate are arranged in parallel;
a proton exchange membrane is arranged between the positive electrode end plate and the negative electrode end plate; a positive electrode is arranged on one side of the proton exchange membrane, which is close to the positive end plate, and a negative electrode is arranged on one side of the proton exchange membrane, which is close to the negative end plate;
the cathode end plate is provided with a cathode current collector at one side close to the proton exchange membrane, a cathode liquid flow frame is arranged at the other side of the cathode current collector, a cathode current collector is arranged at one side close to the proton exchange membrane, and a cathode liquid flow frame is arranged at the other side of the cathode current collector;
the middle parts of the positive electrode liquid flow frame and the negative electrode liquid flow frame are provided with hollow structures, and the positive electrode and the negative electrode are respectively positioned in the hollow structures of the positive electrode liquid flow frame and the negative electrode liquid flow frame and respectively contacted with the positive electrode current collector and the negative electrode current collector;
the positive electrode liquid flow frame and the negative electrode liquid flow frame are respectively provided with a liquid flow channel, the liquid inlet pipe and the liquid outlet pipe are respectively provided with an opening, the openings are connected with the liquid flow channels, and the other ends of the liquid flow channels are connected with hollow structures.
Preferably, elastomer materials are used for sealing the positive electrode current collector and the positive electrode liquid flow frame, the positive electrode liquid flow frame and the proton exchange membrane, the negative electrode liquid flow frame and the proton exchange membrane, and the negative electrode current collector and the negative electrode liquid flow frame.
Preferably, the positive end plate, the positive current collector, the positive current frame, the negative current collector and the negative end plate are all provided with pipe holes, and the liquid inlet pipe and the liquid outlet pipe penetrate through the positive end plate, the positive current collector, the positive current frame, the negative current collector and the negative end plate; the liquid flow channel is connected with pipe holes on the positive electrode liquid flow frame and the negative electrode liquid flow frame.
Preferably, the liquid inlet pipe and the liquid outlet pipe are in sealing connection with the joint of the positive end plate, the positive current collector and the positive liquid flow frame.
Preferably, the liquid inlet pipe comprises an anode liquid inlet pipe and a cathode liquid inlet pipe, and the liquid outlet pipe comprises an anode liquid outlet pipe and a cathode liquid outlet pipe; the positive electrode liquid inlet pipe, the negative electrode liquid outlet pipe and the positive electrode liquid outlet pipe are respectively positioned at four corners of the positive electrode end plate, and the positive electrode liquid inlet pipe and the positive electrode liquid outlet pipe are diagonally distributed, and the negative electrode liquid inlet pipe and the negative electrode liquid outlet pipe are diagonally distributed;
preferably, the liquid flow channel comprises an anode liquid inlet flow channel, an anode liquid outlet flow channel, a cathode liquid inlet flow channel and a cathode liquid outlet flow channel; the positive electrode liquid inlet flow channel and the positive electrode liquid outlet flow channel are positioned on the positive electrode liquid flow frame; the negative electrode liquid inlet flow channel and the negative electrode liquid outlet flow channel are positioned on the negative electrode liquid flow frame; the opening on the positive pole feed liquor pipe is connected with positive pole feed liquor runner, the opening on the negative pole feed liquor pipe is connected with negative pole feed liquor runner, the opening on the negative pole drain pipe is connected with negative pole drain runner, the opening on the positive pole drain pipe is connected with positive pole drain runner.
Preferably, the positive electrode and the negative electrode are graphite felt electrodes.
Preferably, the liquid inlet pipe and the liquid outlet pipe are electrolyte main pipes of the all-vanadium redox flow battery energy storage power station.
The utility model has the beneficial effects that:
according to the utility model, the SOC-OCV testing device is directly integrated on the electrolyte main pipeline of the energy storage power station of the all-vanadium redox flow battery, and the electrolyte is opened on the pipeline, so that the electrolyte can flow into the anode electrode and the cathode electrode of the SOC-OCV testing device independently without providing extra power, and then flows into the liquid outlet pipeline after the testing is finished. By adopting the mode, the use of pipelines, pumps, electric energy and the like is reduced, the occupied area is reduced, the installation is convenient, and the simplicity and the integration degree of the SOC test device are improved. The device for testing the SOC-OCV of the all-vanadium redox flow battery has wide application prospect, and can be used for not only the all-vanadium redox flow battery, but also SOC detection of other types of redox flow batteries.
The features and advantages of the present utility model will be described in detail by way of example with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic structural diagram of an apparatus for SOC-OCV testing of an all-vanadium redox flow battery of the present utility model;
FIG. 2 is a schematic diagram showing the structural separation of an apparatus for SOC-OCV testing of an all-vanadium redox flow battery according to the present utility model;
FIG. 3 is a schematic view of the structure of the side of the positive end plate near the proton exchange membrane;
FIG. 4 is a schematic perspective view of an apparatus for SOC-OCV testing of an all-vanadium redox flow battery according to the present utility model;
wherein: 1-positive end plate, 2-positive current collector, 21-positive liquid flow frame, 211-hollow structure, 3-proton exchange membrane, 31-positive electrode, 32-negative electrode, 4-negative end plate, 5-negative current collector, 51-negative liquid flow frame, 6-liquid inlet pipe, 61-positive liquid inlet pipe, 62-negative liquid inlet pipe, 63-positive liquid outlet pipe, 64-negative liquid outlet pipe, 7-liquid outlet pipe, 71-pipe hole and 72-liquid flow channel.
Detailed Description
The present utility model will be further described in detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the detailed description and specific examples, while indicating the utility model, are intended for purposes of illustration only and are not intended to limit the scope of the utility model. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present utility model.
Referring to fig. 1-3, an embodiment of the present utility model provides a device for SOC-OCV testing of an all-vanadium redox flow battery, including a positive end plate 1 and a negative end plate 4 arranged in parallel, and a liquid inlet pipe 6 and a liquid outlet pipe 7 penetrating the positive end plate 1 and the negative end plate 4;
a proton exchange membrane 3 is arranged between the positive electrode end plate 1 and the negative electrode end plate 4; a positive electrode 31 is arranged on one side of the proton exchange membrane 3 close to the positive end plate 1, and a negative electrode 32 is arranged on one side of the proton exchange membrane 3 close to the negative end plate 4;
a positive current collector 2 is arranged on one side of the positive end plate 1, which is close to the proton exchange membrane 3, a positive liquid flow frame 21 is arranged on the other side of the positive current collector 2, a negative current collector 5 is arranged on one side of the negative end plate 4, which is close to the proton exchange membrane 3, and a negative liquid flow frame 51 is arranged on the other side of the negative current collector 5;
the middle parts of the positive electrode liquid flow frame 21 and the negative electrode liquid flow frame 51 are provided with hollow structures 211, and the positive electrode 31 and the negative electrode 32 are respectively positioned in the hollow structures 211 of the positive electrode liquid flow frame 21 and the negative electrode liquid flow frame 51 and respectively contacted with the positive current collector 2 and the negative current collector 5;
the positive electrode liquid flow frame 21 and the negative electrode liquid flow frame 51 are respectively provided with a liquid flow channel 72, the liquid inlet pipe 6 and the liquid outlet pipe 7 are respectively provided with an opening, the openings are connected with the liquid flow channels 72, and the other ends of the liquid flow channels are connected with hollow structures.
In one possible embodiment, the positive electrode current collector 2 and the positive electrode liquid flow frame 21, the positive electrode liquid flow frame 21 and the proton exchange membrane 3, the negative electrode liquid flow frame 51 and the proton exchange membrane 3, and the negative electrode current collector 5 and the negative electrode liquid flow frame 51 are all sealed by adopting an elastomer material.
In a possible embodiment, the positive end plate 1, the positive current collector 2, the positive liquid flow frame 21, the negative liquid flow frame 51, the negative current collector 5 and the negative end plate 4 are all provided with pipe holes 71, and the liquid inlet pipe 6 and the liquid outlet pipe 7 penetrate through the positive end plate 1, the positive current collector 2, the positive liquid flow frame 21, the negative liquid flow frame 51, the negative current collector 5 and the negative end plate 4; the holes on the positive electrode liquid flow frame 21 and the negative electrode liquid flow frame 51 are connected with the liquid flow channel 72.
In one possible embodiment, the joints of the liquid inlet pipe 6 and the liquid outlet pipe 7 with the positive electrode end plate 1, the positive electrode current collector 2 and the positive electrode liquid flow frame 21 are all in sealing connection.
Referring to fig. 4, in one possible embodiment, the liquid inlet pipe 6 includes a positive liquid inlet pipe 61 and a negative liquid inlet pipe 62, and the liquid outlet pipe 7 includes a positive liquid outlet pipe 63 and a negative liquid outlet pipe 64; the positive electrode liquid inlet pipe 61, the negative electrode liquid inlet pipe 62, the negative electrode liquid outlet pipe 64 and the positive electrode liquid outlet pipe 63 are respectively positioned at four corners of the positive electrode end plate 1, the positive electrode liquid inlet pipe 61 and the positive electrode liquid outlet pipe 63 are diagonally distributed, and the negative electrode liquid inlet pipe 62 and the negative electrode liquid outlet pipe 64 are diagonally distributed;
in one possible embodiment, the liquid flow channel 72 includes a positive liquid inlet channel, a positive liquid outlet channel, a negative liquid inlet channel, and a negative liquid outlet channel; the positive electrode liquid inlet flow channel and the positive electrode liquid outlet flow channel are positioned on the positive electrode liquid flow frame 21; the negative electrode liquid inlet flow channel and the negative electrode liquid outlet flow channel are positioned on the negative electrode liquid flow frame 51; the opening on the positive electrode liquid inlet pipe 61 is connected with the positive electrode liquid inlet channel, the opening on the negative electrode liquid inlet pipe 62 is connected with the negative electrode liquid inlet channel, the opening on the negative electrode liquid outlet pipe 64 is connected with the negative electrode liquid outlet channel, and the opening on the positive electrode liquid outlet pipe 63 is connected with the positive electrode liquid outlet channel.
In one possible embodiment, the positive electrode 31 and the negative electrode 32 are graphite felt electrodes.
In a possible embodiment, the liquid inlet pipe 6 and the liquid outlet pipe 7 are electrolyte main pipes of the energy storage power station of the all-vanadium redox flow battery.
Examples:
in this embodiment, the connection mode of the device is that the device is directly installed on the positive electrode liquid inlet pipe 61, the negative electrode liquid inlet pipe 62, the negative electrode liquid outlet pipe 64 and the positive electrode liquid outlet pipe 63 of the electrolyte of the galvanic pile, four pipelines are distributed at four corners of the device, and the outer sides of the pipelines are 2cm away from the edge. The device is pressed by means of the positive electrode end plate 1 and the negative electrode end plate 4 by using 12 groups of uniformly distributed screw nuts and springs of M10. The positive electrolyte in the pipeline flows through the positive electrode 1 from the positive liquid inlet pipe 61 through the opening of the positive liquid inlet pipe 61 and the positive liquid inlet flow passage, and then flows into the positive liquid outlet pipe 63 from the positive liquid outlet flow passage and the opening of the positive liquid outlet pipe 63; the negative electrode electrolyte in the pipeline flows through the negative electrode 4 from the negative electrode liquid inlet pipe 62 through the opening of the negative electrode liquid inlet pipe 62 and the negative electrode liquid inlet flow passage, and flows into the negative electrode liquid outlet pipe 64 from the openings of the negative electrode liquid outlet flow passage and the negative electrode liquid outlet pipe 64. The positive and negative electrolyte participates in the oxidation-reduction reaction at both sides of the proton exchange membrane 3.
According to the utility model, the SOC-OCV testing device is directly integrated on the electrolyte main pipeline of the energy storage power station of the all-vanadium redox flow battery, and the electrolyte is opened on the pipeline, so that the electrolyte can flow into the anode electrode and the cathode electrode of the SOC-OCV testing device independently without providing extra power, and then flows into the liquid outlet pipeline after the testing is finished. By adopting the mode, the use of pipelines, pumps, electric energy and the like is reduced, the occupied area is reduced, the installation is convenient, and the simplicity and the integration degree of the SOC test device are improved. The device for testing the SOC-OCV of the all-vanadium redox flow battery has wide application prospect, and can be used for not only the all-vanadium redox flow battery, but also SOC detection of other types of redox flow batteries, such as a zinc-bromine redox flow battery, an all-iron redox flow battery and the like.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, or alternatives falling within the spirit and principles of the utility model.

Claims (8)

1. The device for SOC-OCV test of the all-vanadium redox flow battery comprises a positive end plate (1) and a negative end plate (4) which are arranged in parallel, and a liquid inlet pipe (6) and a liquid outlet pipe (7) which penetrate through the positive end plate (1) and the negative end plate (4);
the method is characterized in that: a proton exchange membrane (3) is arranged between the positive electrode end plate (1) and the negative electrode end plate (4); a positive electrode (31) is arranged on one side of the proton exchange membrane (3) close to the positive end plate (1), and a negative electrode (32) is arranged on one side of the proton exchange membrane (3) close to the negative end plate (4);
the cathode end plate (1) is provided with a cathode current collector (2) on one side close to the proton exchange membrane (3), a cathode liquid flow frame (21) is arranged on the other side of the cathode current collector (2), a cathode current collector (5) is arranged on one side of the cathode end plate (4) close to the proton exchange membrane (3), and a cathode liquid flow frame (51) is arranged on the other side of the cathode current collector (5);
the middle parts of the positive electrode liquid flow frame (21) and the negative electrode liquid flow frame (51) are provided with hollow structures (211), and the positive electrode (31) and the negative electrode (32) are respectively positioned in the hollow structures (211) of the positive electrode liquid flow frame (21) and the negative electrode liquid flow frame (51) and are respectively contacted with the positive electrode current collector (2) and the negative electrode current collector (5);
the positive electrode liquid flow frame (21) and the negative electrode liquid flow frame (51) are respectively provided with a liquid flow channel (72), the liquid inlet pipe (6) and the liquid outlet pipe (7) are provided with openings, and the openings are connected with the liquid flow channels (72); the other end of the liquid flow channel (72) is connected with a hollow structure (211).
2. The device for SOC-OCV testing of an all-vanadium redox flow battery of claim 1, wherein: the positive electrode current collector (2) and the positive electrode liquid flow frame (21), the positive electrode liquid flow frame (21) and the proton exchange membrane (3), the negative electrode liquid flow frame (51) and the proton exchange membrane (3), and the negative electrode current collector (5) and the negative electrode liquid flow frame (51) are sealed by adopting elastomer materials.
3. The device for SOC-OCV testing of an all-vanadium redox flow battery of claim 1, wherein: the positive electrode end plate (1), the positive electrode current collector (2), the positive electrode liquid flow frame (21), the negative electrode liquid flow frame (51), the negative electrode current collector (5) and the negative electrode end plate (4) are respectively provided with pipe holes (71), and the liquid inlet pipe (6) and the liquid outlet pipe (7) penetrate through the positive electrode end plate (1), the positive electrode current collector (2), the positive electrode liquid flow frame (21), the negative electrode liquid flow frame (51), the negative electrode current collector (5) and the negative electrode end plate (4); and the pipe holes on the positive electrode liquid flow frame (21) and the negative electrode liquid flow frame (51) are connected with the liquid flow channel (72).
4. The device for SOC-OCV testing of an all-vanadium redox flow battery of claim 3, wherein: the liquid inlet pipe (6) and the liquid outlet pipe (7) are in sealing connection with the joint of the positive electrode end plate (1), the positive electrode current collector (2) and the positive electrode liquid flow frame (21).
5. The device for SOC-OCV testing of an all-vanadium redox flow battery of claim 1, wherein: the liquid inlet pipe (6) comprises an anode liquid inlet pipe (61) and a cathode liquid inlet pipe (62), and the liquid outlet pipe (7) comprises an anode liquid outlet pipe (63) and a cathode liquid outlet pipe (64); the positive electrode liquid inlet pipe (61), the negative electrode liquid inlet pipe (62), the negative electrode liquid outlet pipe (64) and the positive electrode liquid outlet pipe (63) are respectively positioned at four corners of the positive electrode end plate (1), the positive electrode liquid inlet pipe (61) and the positive electrode liquid outlet pipe (63) are diagonally distributed, and the negative electrode liquid inlet pipe (62) and the negative electrode liquid outlet pipe (64) are diagonally distributed.
6. The device for SOC-OCV testing of the all-vanadium redox flow battery of claim 5, wherein: the liquid flow channel (72) comprises an anode liquid inlet channel, an anode liquid outlet channel, a cathode liquid inlet channel and a cathode liquid outlet channel; the positive electrode liquid inlet flow channel and the positive electrode liquid outlet flow channel are positioned on the positive electrode liquid flow frame (21); the negative electrode liquid inlet flow channel and the negative electrode liquid outlet flow channel are positioned on a negative electrode liquid flow frame (51); the opening on the positive pole feed liquor pipe (61) is connected with the positive pole feed liquor runner, the opening on the negative pole feed liquor pipe (62) is connected with the negative pole feed liquor runner, the opening on the negative pole drain pipe (64) is connected with the negative pole drain runner, the opening on the positive pole drain pipe (63) is connected with the positive pole drain runner.
7. The device for SOC-OCV testing of an all-vanadium redox flow battery of claim 1, wherein: the positive electrode (31) and the negative electrode (32) are graphite felt electrodes.
8. The device for SOC-OCV testing of an all-vanadium redox flow battery of claim 1, wherein: the liquid inlet pipe (6) and the liquid outlet pipe (7) are electrolyte main pipes of the all-vanadium redox flow battery energy storage power station.
CN202320725128.9U 2023-04-05 2023-04-05 Device for testing SOC-OCV of all-vanadium redox flow battery Active CN219435012U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202320725128.9U CN219435012U (en) 2023-04-05 2023-04-05 Device for testing SOC-OCV of all-vanadium redox flow battery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202320725128.9U CN219435012U (en) 2023-04-05 2023-04-05 Device for testing SOC-OCV of all-vanadium redox flow battery

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CN219435012U true CN219435012U (en) 2023-07-28

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