KR101176559B1 - Method for manufacturing device for flowing electrolyte in redox flow battery - Google Patents

Abstract

PURPOSE: A manufacturing method of an electrolyte-flowing device is provided to prevent the leakage of electrolyte, to maximize contact and active area between electrolyte and an electrode, and to maintain whole rigidity. CONSTITUTION: A manufacturing method of an electrolyte-flowing device comprises: a step of forming a body(501) from a polypropylene plate; a step of forming a flow groove in the body; a step of forming a flow groove(505); a step of separating the body to a lower part, a center part, and an upper part; a step of forming an electrolyte supply hole(502), a first transversal channel, and an electrolyte through hole; a step of forming a first and a second longitudinal channels, and a combining hole(511); a steof forming a second longitudinal channel, and forming electrolyte discharging hole; a step of recovering the body by conjugating the lower part, the center part, and the top part; and a step of manufacturing the electrolyte-flowing device by insert-installing a dispersing member in the flow groove.

Description

Method for manufacturing device for flowing electrolyte in redox flow battery

The present invention relates to a method of manufacturing an electrolyte flow device used in a redox flow battery, also called a secondary battery, and more particularly, to maximize its contact area between an electrolyte solution and an electrode body and maintain its own strength. It relates to a method for producing an electrolyte flow device for a redox flow battery that can effectively prevent the leakage of the electrolyte.

Recently, renewable energy, such as solar energy and wind energy, has been spotlighted as a method for suppressing greenhouse gas emission, which is a major cause of global warming, and a lot of researches are being carried out for their practical use. However, such renewable energy is greatly affected by the location environment and natural conditions. Moreover, there is a disadvantage in that renewable energy cannot supply energy evenly continuously because the output fluctuates severely.

Therefore, to evenly output energy, it is important to develop a storage device that stores energy when the output is high and uses the stored energy when the output is low. Such representative mass storage devices include lead acid batteries, NaS batteries, and the like. Redox Flow Battery (RFB).

Although lead acid batteries are widely used commercially compared to other batteries, they have the disadvantages of low efficiency and maintenance costs due to periodic replacement and disposal of industrial wastes caused by battery replacement, and NaS batteries have high energy efficiency. It is an advantage, but it has a disadvantage of operating at a high temperature of more than 300 ℃. On the other hand, since the redox flow battery is low in maintenance cost, can be operated at room temperature, and has a feature of independently designing capacity and output, a lot of research is being conducted into mass storage devices.

On the other hand, in the case of redox flow battery, the bipolar plate, the carbon electrode, and the membrane are repeatedly stacked to have a large capacity, which is advantageous for large size, easy to expand the capacity, operates at room temperature, and has a low initial cost, but there are many bipolar plates. In the stacked redox flow cell, the electrolyte passes through the flow path of the bipolar plate and finally flows through the flow path of the bipolar plate having different poles. There was a problem that causes a decrease in the efficiency of the flow battery.

One example for solving the problem of short circuit in such a redox flow battery is disclosed in Korean Patent Publication No. 10-2011-116624. According to the redox flow battery structure of the Patent Publication No. 10-2011-116624, a plurality of battery cells composed of a bipolar plate, a carbon electrode divided into a positive carbon electrode and a negative carbon electrode, and a membrane, a plurality of stacked in series The bipolar plate of the redox flow battery structure to sequentially supply the negative electrolyte and the positive electrolyte solution, the bipolar plate is formed in the lower and upper electrolyte inlet and electrolyte outlet, the electrolyte flows between the electrolyte inlet and the electrolyte outlet A flow path is formed so that a flow passage hole through which an electrolyte having a different pole passes may be formed in the left and right portions of the electrolyte inlet and the electrolyte discharge hole that are symmetrical in a vertical line, and an insulating short prevention tube is inserted into the flow passage hole. To block contact between the electrolyte and bipolar plates Has the.

With this configuration, the bipolar plate and the positive carbon electrode membrane negative carbon electrode are composed of one cell, and a plurality of cells have different poles when the electrolyte injected to one side sequentially passes through each cell in a stacked structure. Teflon material short-circuit tube is installed in the flow path of the bipolar plate to prevent the electrolytes having different poles from contacting the bipolar plate, thereby preventing the battery efficiency from being reduced due to the short circuit caused by the contact. By separating two or more internal short-proof tubes, and overlapping the separated objects to some extent to cushion the consolidation, the both ends of the short-proof tube is in close contact with the positive and negative carbon electrode laminated on both sides of the bipolar plate The electrolyte is incorporated into the bipolar plate through the gap with the carbon electrode. It has provided capable of preventing effect.

However, the Patent Publication No. 10-2011-116624 has been shown to cause some problems in spite of the above technical features and effects. First, since the bipolar plate and the short prevention tube are manufactured and formed separately, the short prevention tube must be integrated in a manner of inserting or inserting into the passage hole of the bipolar plate, thereby making the manufacturing complicated and increasing the manufacturing cost.

In addition, a gap may be generated between the passage hole and the short prevention tube, which may result in leakage of the electrolyte, and due to the protrusion of the short prevention tube, liquid contact between the bipolar plate and the neighboring carbon electrode cannot be achieved. There is a problem that leakage occurs.

In addition, since each flow path formed on both sides of the bipolar plate is located on the same cross-section, the thickness of the bipolar plate should be thick, difficult to process the flow path, and due to the absolute thickness of the bipolar plate, the overall cell stack and There is a problem that the battery structure becomes larger than the output power or requires excessive installation space.

In particular, in the case of the conventional bipolar plate, the contact area and active area between the electrolyte flowing through the flow path of the bipolar plate and the electrode plate is narrow, and the electrolyte flow path is formed on both sides, so that its own strength is very weak, There is a problem that is not easy.

The present invention is to solve the above problems, effectively prevent the leakage of the electrolyte, can maximize the contact area and the active area between the electrolyte and the electrode body, redox can maintain the overall rigidity by increasing its own strength The present invention provides a method for manufacturing an electrolyte flow device for a flow battery.

The present invention has been made to achieve the above object, the method for manufacturing an electrolyte flow device for a redox flow battery according to the present invention, is installed with a protective plate, a current collecting plate, a carbon electrode frame, a membrane to react with the carbon electrode frame Claims [1] A method for manufacturing an electrolyte flow device for a redox flow battery for flowing electricity generating electricity, the method comprising: cutting a polypropylene plate according to a size of an electrolyte flow device for a redox flow battery to be finished to form a body; Cutting the central portion of the body to form a flow groove; Cutting the upper and lower parts of the body to separate the lower, middle, and upper parts; Drilling-molding the electrolyte supply hole to a predetermined depth in the lower portion, cutting-molding the first transverse flow path so as to communicate with the supply hole, and forming an electrolyte through hole; A plurality of first longitudinal flow passages are formed in the lower portion of the center portion so as to communicate with the flow grooves, and a plurality of second longitudinal passages are formed in the upper portion of the center portion so as to communicate with the flow grooves. Forming perforations; Cutting and forming a second transverse flow passage in the upper portion, and forming an electrolyte discharge hole to communicate with the second transverse flow passage; Cleaning and surface treating each of the lower, middle, and upper portions of each of the joints, and joining the lower portion to the lower surface of the central portion, and joining the upper portion to the upper surface of the central portion to form a body; And inserting the dispersion member into the flow groove to complete the electrolyte flow apparatus.

According to the manufacturing method of the electrolyte flow device for a redox flow battery according to the present invention, it is possible to maximize the flow area of the electrolyte and to maximize the contact and active area of the electrolyte and the carbon electrode frame to maximize the electricity production and efficiency, It can produce electricity, maintain its own stiffness and overall rigidity, and is easy to manufacture has a significant effect of improving the productability, reliability and productivity.

1 is an exploded perspective view showing the overall structure of a redox flow battery to which the electrolyte flow device prepared according to the present invention is applied.
2 is a perspective view of the combination of FIG.
3 is a partially exploded perspective view illustrating a flow state of an electrolyte in part of FIG. 1;
Figure 4 is an exploded perspective view showing the electrolyte flow device prepared in accordance with the present invention.
5 is a perspective view of the combination of FIG.
Figure 6 is a perspective view showing the flow path of the electrolyte in a state in which the electrolyte flow device prepared according to the present invention is arranged.
Figure 7 is a perspective view showing the flow path of the electrolyte in a state in which the electrolyte flow apparatus prepared in accordance with the present invention in the reverse arrangement.
Figure 8 is a process chart showing continuously a manufacturing method of the electrolyte flow device for a redox flow battery according to the present invention.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment of a method for manufacturing an electrolyte flow device for a redox flow battery according to the present invention will be described in detail.

First, in Figures 1 to 7, looking at the basic structure of the redox flow battery is applied to the electrolyte flow device prepared according to the present invention, to form the appearance of the battery on both sides to protect the components disposed therebetween Two protective plates, ie a first protective plate 1 and a second protective plate 2, are provided. Here, electrolyte injection holes 101 and 102 are formed in the lower portion of the first protective plate 1 to penetrate the electrolyte of the positive and negative electrodes, and the positive and negative electrodes are formed on the upper portion of the second protective plate 2. Electrolytic solution discharge holes 201 and 202 for penetrating the electrolyte solution are formed in a hole.

The first support gasket 3 is installed inside the first protection plate 1, and the second support gasket 4 is installed inside the second protection plate 2. Here each support gasket (3; 4) is formed of a rubber sheet, soft PVC film and the like.

In addition, a first supporter 5 is installed inside the first support gasket 3, and a second supporter 6 is installed inside the second support gasket 4, and inside the first supporter 5. The first protective gasket 7 is installed, and the second protective gasket 8 is installed inside the second supporter 4. Each of the protective gaskets 7 and 8 is preferably formed of a fluorine-based rubber sheet.

In addition, the first current collecting plate 11 is disposed inside the first protective gasket 7, and the second current collecting plate 12 is disposed inside the second protective gasket 8. Each of the current collector plates 11 and 12 is preferably formed of titanium having high hardness, high corrosion resistance, high conductivity, and low thermal expansion coefficient.

Meanwhile, the first carbon sheet 21 is disposed inside the first current collecting plate 11, and the second carbon sheet 22 is provided inside the second current collecting plate 12.

Between the first carbon sheet 21 and the second carbon sheet 22, the following components are arranged repeatedly and repeatedly from the first carbon sheet 21 toward the second carbon sheet 22, have.

That is, the first carbon electrode frame 31, the first gasket 41, the first electrolyte flow device 51, the first membrane 71, the second electrolyte flow device 52, the second gasket 42, Second carbon electrode frame 32, third gasket 43, third electrolyte flow device 53, second membrane 72, fourth electrolyte flow device 54, fourth gasket 44, third Carbon electrode frame 33, fifth gasket 45, fifth electrolyte flow device 55, third membrane 73, sixth electrolyte flow device 56, sixth gasket 46, fourth carbon electrode Frame 34, seventh gasket 47, seventh electrolyte flow device 57, fourth membrane 74, eighth electrolyte flow device 58, eighth gasket 48, fifth carbon electrode frame ( 35), ninth gasket 49, ninth electrolyte flow device 59, fifth membrane 75, tenth electrolyte flow device 60, tenth gasket 50, and sixth carbon electrode frame 36 These are continuously installed to form a stack structure.

Of course, such a structure is basic, the number of each component can be appropriately selected according to the required capacity or specifications, and each of the carbon electrode frame (31 to 36) is supplied polar electrolyte or each of the electrolyte solution Depending on the polarity of the electrolyte flowing through the flow apparatus (51 to 60) it can represent the polarity of the positive electrode or the negative electrode.

According to such a configuration, for example, the anode electrolyte and the cathode electrolyte supplied through the respective electrolyte injection holes 101 and 102 formed in the lower portion of the first protective plate 11 may include the first support gasket 3 and the first supporter. (5), the first protective gasket (7), the first current collector plate 11 and the first carbon sheet 21 through the electrolyte access holes formed in the first carbon electrode frame 31, the first gasket (41) ), The first electrolyte flow device 51, the first membrane 71, the second electrolyte flow device 52, the second gasket 42, the second carbon electrode frame 32, the third gasket 43, Third electrolyte flow device 53, second membrane 72, fourth electrolyte flow device 54, fourth gasket 44, third carbon electrode frame 33, fifth gasket 45, fifth Electrolyte flow device 55, third membrane 73, sixth electrolyte flow device 56, sixth gasket 46, fourth carbon electrode frame 34, seventh gasket 47, seventh electrolyte flow Device 57, fourth membrane 74, eighth electrolyte flow device 58, eighth gasket 48, fifth carbon field Frame 35, ninth gasket 49, ninth electrolyte flow device 59, fifth membrane 75, tenth electrolyte flow device 60, tenth gasket 50 and sixth carbon electrode frame ( Passing through 36, the second carbon sheet 22, the second collecting plate 12, the second protective gasket 8, the second supporter 6, the second support gasket 4 and the second protective plate 2 By discharge through), by the redox reaction of the positive electrode electrolyte flowing through the electrolyte flow device of each of the electrolyte flow devices (51 ~ 60) and the corresponding carbon electrode frame of each of the carbon electrode frames (31 ~ 36) A positive electric charge is generated, and at the same time, a negative electrode is formed by a redox reaction with a cathode electrolyte flowing through the electrolyte flow device in each of the electrolyte flow devices 51 to 60 and a corresponding carbon electrode frame among the carbon electrode frames 31 to 36. Is generated to generate a predetermined electricity.

In particular, each of the electrolyte flow devices (51 to 60) (hereinafter referred to as the electrolyte flow device 500) applied to the redox flow battery configured as described above has the following characteristics. Directional terms described in the following detailed description should be understood as indicating directions when viewed from the front.

The electrolyte flow device 500 includes a body 501 forming an overall appearance. The body 501 is preferably made of lightweight plastic, particularly PVC having excellent crystallinity and processability.

An electrolyte supply hole 502 for supplying an electrolyte is formed at a lower end of one side of the body 501 to a predetermined depth.

In addition, a first horizontal passage 503 is formed at a lower inner side of the body 501 to communicate with the electrolyte supply hole 502 and to transfer the electrolyte solution supplied through the electrolyte supply hole 502 in a lateral direction. have.

In addition, the body 501 of the upper portion of the first transverse flow path 503 communicates perpendicularly to the first transverse flow path 503 to transfer the electrolyte flowing in the first transverse flow path 503 in the longitudinal direction. A plurality of first vertical passages 504 spaced at regular intervals are formed.

The flow groove 505 is cut in the central portion of the body 501 to flow or transfer the electrolyte transferred through each of the first vertical passages 504 in an expansion or dispersion manner as well as to install an electrolyte dispersion member to be described later. Formed. Of course, each of the first vertical passages 504 communicates with the flow groove 505.

In addition, a dispersion member 506 formed of carbon felt is inserted into the flow groove 505 to uniformly or uniformly distribute or distribute the electrolyte solution supplied through the first longitudinal flow path 504 to the flow groove 505. It is installed. The dispersion member 506 is, of course, preferably formed of a material that does not chemically react with the electrolyte in contact with it.

On the other hand, the components symmetrically formed in the electrolyte supply hole 502, the first transverse flow path 503 and the first vertical flow path 504 formed on the lower portion of the body 501 Formed.

That is, a plurality of second longitudinal flow passages 507 for introducing the electrolyte flowing through the flow grooves 505 and the dispersion member 506 into the body 501 of the flow grooves 505 is the flow. It is formed in communication with the groove 505.

At the end of the second vertical channel 507, a second horizontal channel 508 for transversely transferring the electrolyte flowing through the second vertical channel 507 is provided in each second vertical channel 507. It is formed in communication with.

In addition, at the end of the second transverse passage 508, the electrolyte discharge hole 509 is fixed in a direction opposite to the electrolyte supply hole 502 so as to discharge the electrolyte transferred through the second horizontal passage 508. It is perforated to depth.

On the other hand, the other side of the lower portion of the body 501, that is, the opposite side of the electrolyte supply hole 502 to pass through or bypass the present electrolyte flow device 500 to supply the electrolyte solution to another electrolyte flow device neighboring The electrolyte through hole 510 is perforated.

Of course, in each corner portion of the body 501, the coupling hole 511 is drilled so that a coupling means such as a long bolt (not shown) is inserted for integral coupling with the neighboring components or stack coupling. Formed.

In particular, according to one main feature of the present invention, the ratio of the area of the flow groove 505 to the total area of the electrolyte flow device 500, that is, the flow device total area: flow groove area is 1: 0.5 to 1: 0.4 It is preferable to be set. Here, when the area of the flow groove 506 exceeds 0.5, the flow rate of the electrolyte is increased to increase the electrical yield, while the rigidity of the whole or the body 501 of the electrolyte flow device 500 is lowered, and conversely, if less than 0.4 While the rigidity of the entire electrolyte flow device 500 or the body 501 is increased and the flow rate of the electrolyte is reduced, the yield of the electric yield may be reduced. Therefore, the flow device total area: flow groove area is most preferably set to 1: 0.45.

On the other hand, the electrolyte flow device 500 configured as described above is to generate electricity by the chemical reaction of the electrolyte flowing through the electrolyte flow device and the neighboring peripheral components.

That is, the conversion and reduction action of the electrolyte flowing through the electrolyte flow devices 51 to 60: 500 and the carbon electrodes of the carbon electrode frames 31 to 36 disposed adjacent to or between the electrolyte flow devices. The positive or negative electricity is generated by the electricity generated in this way is collected in each of the current collecting plates (11; 12) is to be used to accumulate or receive it.

Hereinafter, a method of manufacturing an electrolyte flow apparatus for a redox flow battery according to the present invention will be described with reference to FIGS. 8 and 1 to 7.

First, the polypropylene plate having a predetermined thickness is cut to suit the size of the electrolyte flow device for the redox flow battery to be finally formed to form the body 501 (S100).

Then, the center portion of the body 501 is cut to form a flow groove 505 (S102). Here, the flow groove 505 is to maintain the flow amount of the electrolyte to the maximum while maintaining the rigidity of the entire body 501 or the electrolyte flow device 500 flow device total area: flow groove area 1: 0.5 It is preferable to cut-out by setting it as -1: 0.4.

In addition, the upper and lower portions of the body 501 are cut to separate the lower portion 5011, the central portion 5012, and the upper portion 5013 (S104). Here, each cut portion is preferably set to the junction of the respective transverse flow path and the longitudinal flow path to be described later for ease of the processes described below.

Of each of the cut portions as described above, the electrolyte supply hole 502 is drilled into a predetermined depth in the lower portion 5011, and the first transverse flow path 503 is cut and molded to communicate with the supply hole 502. The electrolyte through hole 510 is formed to be punched (S106).

In addition, a plurality of first longitudinal flow passages 504 are formed in the lower portion of the central portion 5012 at regular intervals so as to communicate with the flow grooves 505, and in the same manner, the plurality of second longitudinal oils are formed on the upper portion of the central portion 5012. Perforations are formed at regular intervals so that the furnace 507 communicates with the flow grooves 505, and perforations are formed in each corner of the coupling holes 511 (S108).

In addition, after the second horizontal flow passage 508 is cut off and formed in the upper portion 5013, the electrolyte discharge hole 509 is drilled to a predetermined depth so as to communicate with the second horizontal flow passage 508 (S110).

In addition, after washing and surface-treating each of the combined portions of the lower portion 5011, the center portion 5012, and the upper portion 5013, which have been processed, the lower portion 5011 is joined to the lower surface of the central portion 5012, and the center portion ( By joining the upper portion 5013 to the upper surface of the 5012 to form a body 501 return (S112). Here, the welding of each portion 5011, 5012, 5013 may be applied by welding or bonding bonding method.

Finally, after cutting or molding the prepared dispersion member 506 is inserted into the flow groove 505 to complete the electrolyte flow device (S114).

As described above, the electrolyte flow apparatus 51 to 60: 500 manufactured according to the present invention includes a first protective plate 1, a support gasket 3, a first supporter 5, a protective gasket 7, and a first Current collector plate 11, first carbon sheet 21, first carbon electrode frame 31, first gasket 41, first electrolyte flow device 51, first membrane 71, second electrolyte flow Device 52, second gasket 42, second carbon electrode frame 32, third gasket 43, third electrolyte flow device 53, second membrane 72, fourth electrolyte fluid flow device ( 54), the fourth gasket 44, the third carbon electrode frame 33, the fifth gasket 45, the fifth electrolyte flow device 55, the third membrane 73, and the sixth electrolyte flow device 56 , The sixth gasket 46, the fourth carbon electrode frame 34, the seventh gasket 47, the seventh electrolyte flow device 57, the fourth membrane 74, the eighth electrolyte flow device 58, and the 8 gasket 48, fifth carbon electrode frame 35, ninth gasket 49, ninth electrolyte flow device 59, fifth membrane 75, tenth electrolyte flow device 60, tenth gasket 50 , The sixth carbon electrode frame 36, the second carbon sheet 22, the second current collecting plate 12, the second protective gasket 8, the second supporter 6, the second support gasket 4 and the 2, the protective plate 2 is disposed and installed in a stacking manner, the first protective plate 1 and the second protective plate 2 are connected to each other by a fixing device (not shown), and the first protective plate ( Connect a positive electrolyte line (not shown) to the electrolyte input hole 101 of 1), connect a negative electrolyte line (not shown) to the electrolyte input hole 102 of the first protective plate 1, the second protection After connecting the positive electrolyte line (not shown) to the electrolyte discharge hole 201 of the plate 2, and the negative electrolyte line (not shown) to the electrolyte discharge hole 202 of the second protective plate 2, When an electrolyte having a different polarity is supplied to each of the input holes 101 and 102 using a delivery pump (not shown), the electrolyte flow device of each of the electrolyte flow devices 51 to 60 flows. Positivity is generated by the redox reaction between the anode electrolyte and the carbon electrode of the carbon electrode frame of the respective carbon electrode frames (31 to 36), and at the same time the flow of the electrolyte in the respective electrolyte flow devices (51 to 60) A negative electric charge is generated by a redox reaction between the negative electrode electrolyte flowing through the apparatus and the carbon electrode of the corresponding carbon electrode frame among the respective carbon electrode frames 31 to 36 to generate predetermined electricity.

Here, both electrolyte flowing through the electrolyte supply hole 502 of the electrolyte flow device 500 passes through the first transverse flow path 503 or after the first longitudinal flow path 504 to the flow groove 505 Supplied.

The cathode electrolyte supplied to the flow groove 505 is dispersed or diffused by the dispersion member 506 installed in the flow groove 505, and the carbon electrode is in contact with the electrolyte dispersed through the dispersion member 506. Positive electricity is generated by the carbon electrode of the frame.

Then, the electrolyte passing through the flow groove 505 flows through the second transverse flow path 508 through the second longitudinal flow path 507 and then another electrolyte flow device or electrolyte line neighboring through the electrolyte discharge hole 509. To be discharged.

Of course, the electrolyte through-hole 510 formed on the other side of the lower part of the body 501 is supplied to another electrolyte flow device that has a different polarity, that is, the cathode electrolyte penetrates and the electrolyte flows symmetrically with the above method. It generates negative electricity.

Each of the electricity generated in this way is collected in the first current collecting plate 11 and the second current collecting plate 12, the user or worker receives electricity from each current collecting plate (11; 12) to provide to the consumer or You can use it directly.

In particular, the electrolyte flow device manufactured according to the manufacturing method of the present invention increases the contact area between the electrolyte and the carbon electrode frame, while increasing its own rigidity and overall stiffness to realize a reliable and stable redox flow battery. .

1, 2: protective plate 11, 12: current collector plate
21, 22: carbon sheet 31 ~ 36: carbon electrode frame
41 to 49: Gasket 51 to 60, 500: electrolyte flow device
71 to 75 Membrane 501 Body
502: electrolyte supply hole 503: first cross flow passage
504: Type 1 flow path 505: flow groove
506: dispersion member 507: second type flow path
508: second side passage 509: electrolyte discharge hole
510: electrolyte through hole 5011: lower part
5012: center portion 5013: upper portion

Claims (3)

In the manufacturing method of the electrolyte flow device for a redox flow battery is installed together with a protective plate, a current collector plate, a carbon electrode frame, a membrane for flowing an electrolyte that generates electricity by reacting with the carbon electrode frame,
Cutting the polypropylene plate according to the size of the electrolyte flow apparatus for the redox flow battery to be finally formed to form a body 501 (S100);
Cutting the central portion of the body 501 to form a flow groove 505 (S102);
Cutting the upper and lower portions of the body 501 into a lower portion 5011, a central portion 5012, and an upper portion 5013 (S104);
Drilling and molding the electrolyte supply hole 502 to a predetermined depth in the lower portion 5011, cut-molded the first transverse flow path 503 to communicate with the supply hole 502, and drills the electrolyte through hole 510 Forming step (S106);
A plurality of first longitudinal passages 504 are formed in the lower portion of the central portion 5012 so as to communicate with the flow grooves 505, and a plurality of second longitudinal passages 507 are formed in the upper portion of the central portion 5012. Forming perforations to communicate with the flow grooves 505 and perforating coupling holes 511 at respective corners (S108);
Cutting and forming a second transverse flow passage 508 in the upper portion 5013, and forming an electrolyte discharge hole 509 to communicate with the second transverse flow passage 508 (S110);
After cleaning and surface treatment of each of the lower portions 5011, the central portion 5012, and the respective coupling portions of the upper portion 5013, the lower portion 5011 is bonded to the lower surface of the central portion 5012, and the central portion 5012 Bonding the upper portion 5013 to the upper surface of the step (S112) to form a body 501; And
Inserting the dispersion member 506 into the flow groove 505 to complete the electrolyte flow device (S114), characterized in that it comprises a redox flow battery electrolyte flow device manufacturing method.
According to claim 1, The flow groove 505, the flow device total area: flow groove area to maintain the flow of the electrolyte to the maximum while maintaining the rigidity of the entire body 501 and the electrolyte flow device 500 Method for manufacturing an electrolyte flow device for a redox flow battery, characterized in that the cut-off is set to 1: 0.5 to 1: 0.4.
2. The lower portion 5011, the center portion 5012, and the upper portion 5013 are separated at the junction of each of the transverse flow passages 503; 508 and the vertical flow passages 504; 507. Method for producing an electrolyte flow device for a redox flow battery.

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