WO2021090976A1 - 셀프레임 구조체 및 이를 이용한 레독스흐름전지 - Google Patents
셀프레임 구조체 및 이를 이용한 레독스흐름전지 Download PDFInfo
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- WO2021090976A1 WO2021090976A1 PCT/KR2019/014966 KR2019014966W WO2021090976A1 WO 2021090976 A1 WO2021090976 A1 WO 2021090976A1 KR 2019014966 W KR2019014966 W KR 2019014966W WO 2021090976 A1 WO2021090976 A1 WO 2021090976A1
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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
- H01M8/02—Details
- H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
- H01M8/0273—Sealing or supporting means around electrodes, matrices or membranes with sealing or supporting means in the form of a frame
-
- 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
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0258—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant
-
- 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
- H01M8/0297—Arrangements for joining electrodes, reservoir layers, heat exchange units or bipolar separators to each other
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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
- H01M8/18—Regenerative fuel cells, e.g. redox flow batteries or secondary fuel cells
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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
- H01M8/18—Regenerative fuel cells, e.g. redox flow batteries or secondary fuel cells
- H01M8/184—Regeneration by electrochemical means
- H01M8/188—Regeneration by electrochemical means by recharging of redox couples containing fluids; Redox flow type batteries
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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
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
-
- 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
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/2455—Grouping of fuel cells, e.g. stacking of fuel cells with liquid, solid or electrolyte-charged reactants
-
- 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
Definitions
- the present invention relates to a cell frame structure and a redox flow battery, and more specifically, a bipolar plate is positioned on the rear of one outer frame, and the inner frame covers the bipolar plate and is interlocked and coupled to the rear of the outer frame.
- the present invention relates to a cell frame structure capable of assembling a stack capable of being assembled as a frame, and a stack capable of being sealed without a sealing member or an adhesive member while the front of the other cell frame is interlocked and coupled to the back of one cell frame, and a redox flow battery using the same.
- renewable energy such as solar energy or wind energy is in the spotlight, and many studies are being conducted to commercialize and disseminate these.
- renewable energy is greatly influenced by the location environment or natural conditions.
- renewable energy since renewable energy has a strong output fluctuation, there is a disadvantage in that it cannot continuously and evenly supply energy.
- Dox flow battery RFB; Redox Flow Battery
- the lead acid battery is widely used commercially compared to other batteries, but has disadvantages such as low efficiency and maintenance costs due to periodic replacement, and a problem of disposal of industrial waste generated during battery replacement, and in the case of NaS batteries, energy
- the advantage is high efficiency, but there is a disadvantage of operating at a high temperature of 300°C or higher.
- the redox flow battery has low maintenance costs, can be operated at room temperature, and can independently design capacity and output, and thus, many researches into large-capacity storage devices are currently underway.
- the same sealing member such as a gasket for keeping the flow channel of the flow cell in an airtight state is attached to the adhesive member. It has a structure that is sealed through.
- an end plate for protecting a plurality of cell frames is formed at both ends, and then one end plate, a plurality of cell frames, and The other end plate is combined into a stack or battery through a binding member such as a bolt and a nut that integrally binds the other end plate, and at this time, the positive electrode electrolyte and the negative electrode electrolyte having a relatively high temperature are supplied to the end plate, which is the starting end.
- a binding member such as a bolt and a nut that integrally binds the other end plate
- the thickness of the flow cell channel or the sealing member must be thick, but this design reflection causes difficulty in processing the flow channel, and the overall stack due to the absolute thickness of the flow cell or cell frames Compared to this calculated power, there is a problem that it is larger and requires an excessive installation space.
- an object of the present invention is to be assembled into one cell frame by interlocking coupled to the rear surface of the outer frame while the bipolar plate is positioned on the back of one outer frame and the inner frame covers the bipolar plate. It is to provide a cell frame structure capable of assembling a stack capable of sealing without a sealing member or an adhesive member while the front of the cell frame is interlocked, and a redox flow battery using the same.
- an outer frame having a rectangular panel shape with a center opened in a square;
- a cell frame structure comprising an inner frame having a rectangular frame shape and interlockingly coupled to the inner frame on the rear opening of the outer frame to constitute a flow cell is provided.
- the flow cell is interlocked and assembled into a cell frame while the inner frame covers the rear edge of the bipolar plate on the rear surface of the outer frame while the front edge of the bipolar plate is seated on the rear opening of the outer frame. .
- the outer frame may include a plate having a rectangular panel shape with an opening formed in the center; A convex sealing line protruding from the front edge of the plate; An inner frame seating surface formed around the front opening of the plate and on which the rear surface of the inner frame is seated; An anode electrolyte inlet hole formed through the lower right corner of the front side of the plate; An anode electrolyte outlet hole formed through the upper right corner of the front side of the plate; A cathode electrolyte inlet hole formed through the lower left corner of the front side of the plate; A cathode electrolyte outlet hole formed through the upper left corner of the front side of the plate; A convex anode inlet channel protruding from the front anode electrolyte inlet hole of the plate to the opening; A convex anode outlet channel protruding from the front anode electrolyte outlet hole of the plate to the opening; A convex cathode inlet channel protruding from the front catho
- the outer frame may include a concave sealing line protruding from the rear edge of the plate; A bipolar seating surface formed around the rear opening of the plate and on which the front edge of the bipolar plate is seated; A convex inner coupling line protruding along the edge of the bipolar seating surface so that the concave outer coupling line of the inner frame is interlocked while covering the rear edge of the bipolar plate; A concave anode inflow channel protruding from the anode electrolyte inflow hole formed in the lower left corner of the rear surface of the plate to the opening; A concave anode outlet channel protruding from the anode electrolyte outlet hole formed in the upper left corner of the rear surface of the plate to the opening; A concave cathode inflow channel protruding from the cathode electrolyte inflow hole formed in the lower right corner of the rear surface of the plate to the opening; A concave cathode outflow channel protruding from the cathode electro
- a catholyte transfer hole penetrates between the front cathode inlet gate and the rear cathode inlet gate of the plate, and between the front cathode outflow gate and the rear cathode outflow gate of the plate so that the cathode electrolyte moves from the back of the plate toward the front It is preferably formed.
- the inner frame a cover having a square frame shape; A close contact surface formed on the inner periphery of the front edge of the cover and in close contact with the rear edge of the bipolar plate; A concave outer coupling line protruding from the front edge of the cover and interlockingly coupled to the convex inner coupling line of the outer frame; An anolyte inflow guide and an anolyte outflow guide formed on the front concave outer coupling line of the cover and positioned in an open structure at the rear anode inlet gate and the rear anode outlet gate, respectively; And a catholyte inflow guide and catholyte outflow guide formed in the front concave outer coupling line of the cover and positioned in a closed structure at the rear cathode inlet gate and the rear cathode outlet gate, respectively.
- the inner frame includes an outer frame seating surface that corresponds to the rear surface of the cover and is interlocked with the rear surface of the plate and is seated on the inner frame seating surface of the rear-end plate outer frame; A membrane seating surface formed around the outer frame seating surface and allowing the membrane to be seated; An anode gate closing piece corresponding to the rear surface of the anolyte inflow guide and the anolyte outflow guide, and in close contact with the front anode inlet gate and the front anode outlet gate of the rear plate, respectively; And a cathode gate closing piece corresponding to the rear surface of the catholyte inflow guide and the catholyte outflow guide, and in close contact with the front cathode inflow gate and the front cathode outflow gate of the rear plate, respectively.
- the cell frame of the configuration as described above A stack in which a plurality of cell frames are continuously arranged to enable discharge according to the flow of the electrolyte; A pair of end plates configured on both sides of the stack to protect the stack from the outside; And an electrode plate configured to be electrically connected to each of the positive and negative terminals of a plurality of cell frames of the stack while being positioned on the end plate to collect electric charges of the entire cell frames that are discharged according to the flow of the electrolyte.
- Dox flow batteries are provided.
- the bipolar plate is positioned on the rear of one outer frame, and the inner frame covers the bipolar plate and is interlocked to the rear of the outer frame to be assembled into one cell frame.
- the front of the cell frame is interlocked, it is possible to assemble a stack that can be sealed without a sealing member or an adhesive member.
- FIG. 1 and 2 are perspective views showing the front and rear surfaces of a redox flow battery using a cell frame structure according to a preferred embodiment of the present invention, respectively;
- FIG. 3 and 4 are exploded perspective views showing the front and rear surfaces of a redox flow battery according to a preferred embodiment of the present invention, respectively;
- FIGS. 5 and 6 are views showing the front and rear surfaces of the cell frame structures of FIGS. 3 and 4, respectively.
- FIGS. 7 and 8 are views showing an embodiment in which an anode electrolyte and a cathode electrolyte flow through the cell frame structures of FIGS. 3 and 4, respectively.
- the cell frame structure includes an outer frame 100 having a rectangular panel shape with a square opening in the center and an inner frame having a rectangular frame shape.
- the frame 200 constitutes the flow cell 300.
- the flow cell 300 is a bipolar plate (BP) on the rear surface of the outer frame 100 in a state in which the front edge of the bipolar plate BP is seated on the rear opening of the outer frame 100 While covering the rear edge of the interlocking coupling is assembled into a cell frame (400).
- BP bipolar plate
- the cell frame 400 is assembled into a stack (S) while a plurality of cell frames 400 are interlocked with the front of the cell frame 400 at the rear end to the rear surface of the cell frame 400 at the front end.
- the outer frame 100 is a frame that is interlocked with the inner frame 200 to constitute the flow cell 300 and includes a plate 102 having a rectangular panel shape in which an opening 101 is formed in the center.
- the outer frame 100 is formed around the convex sealing line 103 protruding from the front edge of the plate 102 and the front opening 101 of the plate 102 so that the rear surface of the inner frame 200 is seated.
- the convex anode inflow channel 109 is formed to protrude from the electrolyte inflow hole 105 to the opening 101 to provide an anode flow path, and is formed protruding from the front anode electrolyte outflow hole 105 of the plate 102 to the opening 101.
- the convex cathode outlet channel 112 protrudes from the front cathode electrolyte outlet hole 108 of 102 to the opening 101 to provide a cathode flow path, and the opening 101 along the inner frame seating surface 104 of the plate 102.
- the convex flow path chamber 113 protruding around, and the front anode inlet gate 114 formed in the convex flow channel chamber 113 so that the convex flow channel chamber 113 of the plate 102 and the convex anode inflow channel 111 communicate with each other.
- the outer frame 100 is formed around the concave sealing line 118 protruding from the rear edge of the plate 102 and the rear opening 101 of the plate 102 to the front edge of the bipolar plate BP. Is formed protruding along the edge of the bipolar seating surface 119 and the bipolar seating surface 119 so that the concave outer coupling line 203 of the inner frame 200 covers the rear edge of the bipolar plate BP.
- a concave cathode outlet channel 125 protruding from the hole 108 to the opening 101 to provide a cathode flow path
- the outer frame 100 is between the front negative electrode inlet gate 116 and the rear negative electrode inlet gate 129 of the plate 102 so that the negative electrolyte solution moves from the rear surface of the plate 102 toward the front, and the plate 102 It further includes a catholyte transfer hole 131 formed through each of the front cathode outflow gate 117 and the rear cathode outflow gate 130.
- the inner frame 200 is interlocked with the outer frame 100 to constitute the flow cell 300, and the front is interlocked while covering the bipolar plate BP to the rear of the outer frame 100, It includes a cover 201 having a square frame shape.
- the inner frame 200 is formed on the inner periphery of the front edge of the cover 201 and protrudes from the front edge of the cover 201 and the contact surface 202 that is in close contact with the rear edge of the bipolar plate BP.
- a concave outer coupling line 203 interlockingly coupled to the convex inner coupling line 120 of the outer frame 100 and a concave front outer coupling line 203 of the cover 201, respectively, and formed on the rear anode inlet gate ( 127) and the rear anode outlet gate 128 in an open structure so that the anode electrolyte flows into the bottom of the concave flow channel chamber 126 on the rear of the plate 102 and contacts the rear of the bipolar plate BP.
- the anolyte inflow guide 204 and the anolyte outflow guide 205 and the front concave outer coupling line 203 of the cover 201 are formed to flow out to the top of the flow channel chamber 126, respectively, and the cathode inflow gates ( 129 and the rear cathode discharge gate 130 in a closed structure so that the cathode electrolyte does not flow into the concave flow channel chamber 126 on the back of the plate 102, but through the catholyte transfer hole 131, the rear cathode inlet gate ( It is moved from 129 to the front cathode inlet gate 116 and flows into the lower portion of the convex flow path chamber 113 in front of the plate 102 and comes into contact with the front of the bipolar plate BP, and then goes to the upper portion of the convex flow channel chamber 113. It includes a catholyte inflow guide 206 and a catholyte outflow guide 207 that move from the front cathode outflow gate
- the inner frame 200 corresponds to the rear surface of the cover 201 and is interlocked with the rear surface of the plate 102, and the outer that is seated on the inner frame seating surface 104 of the rear plate outer frame 100 It is formed around the frame seating surface 208 and the outer frame seating surface 208 and allows the membrane (M) to be seated so that the anode electrolyte reaction chamber and the cathode electrolyte reaction chamber are secured between the bipolar plates (BP) at the front and rear ends.
- the membrane (M) membrane
- the membrane seating surface 209 corresponding to the rear surface of the anolyte inflow guide 204 and the anolyte outflow guide 205, respectively, in the front anode inlet gate 114 and the front anode outflow gate 115 of the rear plate 102.
- the anode electrolyte with the front of the rear plate 102 does not flow into the convex flow channel chamber 113 of the front plate 102, but flows into the lower portion of the concave flow channel chamber 126 of the front plate 102 and the bipolar plate ( After contacting the rear surface of the BP), they correspond to the anode gate closing piece 210 and the rear surface of the catholyte inflow guide 206 and the catholyte outflow guide 207 to flow out to the top of the concave flow channel chamber 126, respectively.
- the cathode electrolyte with the front of the rear plate 102 flows into the concave flow channel chamber 126 of the front plate 102 And flows into the lower portion of the convex flow path chamber 113 of the shear plate 102 through the catholyte transfer hole 131 and flows out to the upper portion of the convex flow channel chamber 113 after being brought into contact with the front of the bipolar plate BP.
- It includes a cathode gate closing piece 211 and the like.
- the front edge of the bipolar plate BP is seated on the rear bipolar seating surface 119 of the outer frame 100.
- the convex inner coupling line 120 of the outer frame 100 is inserted into the concave outer coupling line 203 while the front contact surface 202 of the inner frame 200 is in close contact with the rear edge of the bipolar plate BP. Then, it is interlocked by being pressurized, and at this time, the anolyte inflow guide 204 of the inner frame 200 and the anolyte in the rear anode inlet gate 127 and the rear anode outflow gate 128 of the flow cell 300
- the outlet guide 205 is located in an open structure, and the rear cathode inlet gate 129 and the rear cathode outlet gate 130 of the flow cell 300 have a catholyte inflow guide 206 and a cathode of the inner frame 200.
- the liquid outflow guide 207 is located in a closed structure.
- the convex sealing line 103 of the rear flow cell 300-2 is fitted into the concave sealing line 118 of the front flow cell 300-1, and at this time, the rear flow cell 300-2
- the rear surface of the inner frame 200 of the front flow cell 300-1 is seated on the inner frame seating surface 104 of the, and the electrolyte inflow hole and the electrolyte solution of the front flow cell 300-1 and the rear flow cell 300-2
- Each outlet hole has a structure that communicates with each other.
- the convex anode inflow channel 111 and the convex anode outflow channel 112 of the rear flow cell 300-2 are the concave anode inflow channel 122 and the concave anode outflow channel of the front flow cell 300-1. (123), the convex cathode inflow channel 111 and the convex cathode outflow channel 112 of the rear flow cell 300-2 are connected to the concave cathode inflow channel 124 of the front flow cell 300-1. Inserted into the concave cathode outlet channel 125, at this time, the front anode inlet gate 114 and the front anode outlet gate 115 of the rear flow cell 300-2 are the anode gates of the front flow cell 300-1. The closing piece 210 is in close contact with the cathode gate closing piece 211 of the front cathode inlet gate 116 and the front cathode outlet gate 117 of the rear flow cell 300-2. This becomes close.
- the membrane (M) is positioned on the rear membrane seating surface 209 of the flow cell 300 in the front end, and the flow cell in the front end ( The rear surface of the bipolar plate BP located at 300) and the front surface of the bipolar plate BP located at the flow cell 300 at the rear and one side of the membrane M and the rear surface of the membrane M have an electrolyte diffusion felt ( T) is constructed.
- the bipolar plate (BP) is mounted on a plurality of flow cells 300 and separated through a membrane (M) between the flow cells 300, and when the positive electrolyte and the negative electrolyte are in contact with each other, the membrane It is possible to discharge while having the charge of the anode and the cathode through the oxidation and reduction reactions generated in the reaction chamber between the (M) and the flow path chambers, since it is a known configuration, a detailed description will be omitted.
- the electrolyte diffusion felt (T) is configured in a state in contact with the front and rear surfaces of the bipolar plate (BP), so that the electrolyte flowing along the bipolar plate (BP) is uniform over the entire surface of the bipolar plate (BP).
- the contact is made so that the efficiency of oxidation and reduction reactions occurring in the space between the bipolar plate BP and the membrane M is improved, and at the same time, the electric charge generated through the oxidation and reduction reactions is easily collected.
- the interlocking coupling is made through insertion and pressing of the concave component and the convex component of the cell frame 400, at this time, the protruding height of the convex component is a concave component It is preferable to protrude higher than the protruding height of about 1/10 to 2/10, and thus, when the convex component is inserted into the concave component and pressed, the end fitted to the bottom of the concave groove is bent and deformed. It is better to be interlocked without falling out of the width.
- the protrusion height of the convex element is shorter than the above range, the deformation area of the end is too small, so that the interlocking coupling is easily released and sealing is not performed. If the protrusion height is longer than the above range, the deformation area of the end is rather Because it is too wide, the width of the groove of the concave component becomes wide, so that interlocking coupling cannot be achieved.
- the cell frame 400 of the present invention is preferably made of a synthetic resin material such as PP, which is easily deformed when pressed for interlocking coupling.
- the positive electrolyte is circulated in the positive electrolyte inflow hole 105 in the lower front right corner of the frontmost flow cell 300 and the positive electrolyte inflow hole 106 in the upper left corner of the rearmost flow cell 300.
- the anode circulation pump and the anolyte tank are connected, and the cathode electrolyte inflow hole 107 in the lower left front corner of the flow cell 300 at the front end and the cathode electrolyte leakage hole in the upper right corner of the rear rear end of the flow cell 300 ( 108) is connected to a catholyte circulation pump and a catholyte tank to circulate the catholyte.
- the anode circulation pump flows into the anode electrolyte inlet hole 105 in the lower right front of the flow cell 300 at the front end from the anolyte tank, and at this time, the anode electrolyte flows into a continuous flow cell ( At the same time, it flows into the space between the anode inflow channels communicated with the anode electrolyte inflow holes 105 of the 300).
- the anode electrolyte is transferred from the concave anode inlet channel 122 located at the rear of each front flow cell 300-1 to the bottom of the concave channel chamber 126 via the rear anode inlet gate 127.
- the bipolar plate (BP) After flowing in and contacting the rear surface of the bipolar plate (BP), it flows out to the upper portion of the concave flow channel chamber 126 and passes through the rear anode discharge gate 128 and the concave anode discharge channel 123, 106) at the same time.
- the cathode electrolyte is introduced into the cathode electrolyte inlet hole 107 in the lower left front of the flow cell 300 at the front end from the catholyte tank by the cathode circulation pump, and at this time, the cathode electrolyte is a continuous flow cell ( 300) simultaneously flows into the space between the cathode inflow channels communicated with the cathode electrolyte inflow holes 107.
- the cathode electrolyte is flow cell through the rear cathode inlet gate 129 and the catholyte transfer hole 131 from the concave cathode inlet channel 124 located at the rear of each front flow cell 300-1.
- the cathode electrolyte After flowing into the lower portion of the convex flow channel chamber 113 located in front of 300 and contacting the front of the bipolar plate BP, flows out to the upper portion of the convex flow channel chamber 113 and Through the catholyte transfer hole 131, it flows out simultaneously to the concave cathode outlet channel 125 and the cathode electrolyte outlet 108 located on the rear surface of the flow cell 300.
- the redox flow battery (B) according to a preferred embodiment of the present invention, a plurality of cell frames 400 having the above-described configuration are arranged in succession to flow of the electrolyte.
- An electrode plate (E) configured to be electrically connected to each of the positive and negative terminals of the plurality of cell frames 400 of the stack (S) to collect charge from the entire cell frames 400 that are discharged according to the flow of the electrolyte.
- it is configured on the outer surface of the end plate (P) and includes a binding reinforcement channel (unsigned) for reinforcing the binding between the end plate (P) and the stack (S).
- the configuration of the end plate (P), the electrode plate (E), and the binding reinforcement channel (not referenced) excluding the stack (S) may have a known configuration, and a detailed description thereof will be omitted.
- the stack (S) is a battery body in which a plurality of cell frames 100 are arranged in a stack structure to enable the discharge of the electrolyte through oxidation and reduction reactions according to the flow of the electrolyte, and a bipolar structure is provided on the rear surface of the outer frame 100.
- the edge of the plate BP is seated, and the inner frame 200 is fitted into the outer frame 100 while being in close contact with the bipolar plate BP, and then interlocked through pressurization to be assembled into the flow cell 300, and the rear end
- the front of the outer frame 100 of the flow cell 300-2 is in close contact with the rear surface of the outer frame 100 of the front flow cell 300-1, the convex element is inserted into the concave element and is then pressed to interlock.
- the membrane (M) is positioned on the rear surface of the front flow cell (300-1), and the rear surface of the bipolar plate (BP) and the membrane (M) are located on the front flow cell (300-1).
- the positive electrolyte is circulated in the positive electrolyte inflow hole 105 in the lower front right corner of the frontmost flow cell 300 and the positive electrolyte inflow hole 106 in the upper left corner of the rearmost flow cell 300.
- the anode circulation pump and the anolyte tank are connected, and the cathode electrolyte inflow hole 107 in the lower left front corner of the flow cell 300 at the front end and the cathode electrolyte leakage hole in the upper right corner of the rear rear end of the flow cell 300 ( 108) is connected to a catholyte circulation pump and a catholyte tank to circulate the catholyte.
- the anode circulation pump flows into the anode electrolyte inlet hole 105 in the lower right front of the flow cell 300 at the front end from the anolyte tank, and at this time, the anode electrolyte flows into a continuous flow cell ( At the same time, it flows into the space between the anode inflow channels communicated with the anode electrolyte inflow holes 105 of the 300).
- the anode electrolyte is transferred from the concave anode inlet channel 122 located at the rear of each front flow cell 300-1 to the bottom of the concave channel chamber 126 via the rear anode inlet gate 127.
- the bipolar plate (BP) After flowing in and contacting the rear surface of the bipolar plate (BP), it flows out to the upper portion of the concave flow channel chamber 126 and passes through the rear anode discharge gate 128 and the concave anode discharge channel 123, 106) at the same time.
- the cathode electrolyte is introduced into the cathode electrolyte inlet hole 107 in the lower left front of the flow cell 300 at the front end from the catholyte tank by the cathode circulation pump, and at this time, the cathode electrolyte is a continuous flow cell ( 300) simultaneously flows into the space between the cathode inflow channels communicated with the cathode electrolyte inflow holes 107.
- the cathode electrolyte is flow cell through the rear cathode inlet gate 129 and the catholyte transfer hole 131 from the concave cathode inlet channel 124 located at the rear of each front flow cell 300-1.
- the cathode electrolyte After flowing into the lower portion of the convex flow channel chamber 113 located in front of 300 and contacting the front of the bipolar plate BP, flows out to the upper portion of the convex flow channel chamber 113 and Through the catholyte transfer hole 131, it flows out simultaneously to the concave cathode outlet channel 125 and the cathode electrolyte outlet 108 located on the rear surface of the flow cell 300.
- the positive electrolyte and the negative electrolyte flow through the space between the bipolar plate (BP) and the membrane (M), respectively.
- the electrolyte is oxidized and reduced with the membrane (M) interposed therebetween, so that each bipolar plate (BP) is Positive and negative charges are collected on one side
- the electric charges collected on the bipolar plate BP are all collected by the electrode plate E and then supplied to a conversion device such as an inverter, converted into DC/AC, and then supplied to each load.
- the bipolar plate BP is positioned on the rear surface of one outer frame 100, and the inner frame 200 is interlocked to the rear surface of the outer frame 100 while covering the bipolar plate BP.
- the cell frame 400 and the front of the other cell frame 400 is interlocked to the rear of any one cell frame 400, so that a stack (S) that can be sealed without a sealing member or an adhesive member can be assembled. .
- one cell frame 400 is composed of an outer frame 100 and an inner frame 200 that are coupled in a face-to-face state, it is possible to have a thinner thickness compared to the conventional stack (S) having the same capacity. ) Can be made thinner.
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Abstract
Description
Claims (8)
- 중앙이 사각형으로 개구된 사각패널 형상을 가지는 아우터프레임(100)과;사각틀 형상을 가지는 이너프레임(200)을 포함하고,아우터프레임(100)의 배면 개구부위에 이너프레임(200)이 인터로킹 결합되어 플로우셀(300)을 구성하는 것을 특징으로 하는 셀프레임 구조체.
- 제1항에 있어서, 플로우셀(300)은,아우터프레임(100)의 배면 개구부위에 바이폴라플레이트(BP)의 정면 가장자리가 안착된 상태에서 이너프레임(200)이 아우터프레임(100)의 배면에 바이폴라플레이트(BP)의 배면 가장자리를 커버하면서 인터로킹 결합되어 셀프레임(400)으로 조립되는 것을 특징으로 하는 셀프레임 구조체.
- 제1항 또는 제2항 중 어느 한 항에 있어서, 아우터프레임(100)은,중앙에 개구부(101)가 형성된 사각패널 형상을 가지는 플레이트(102);플레이트(102)의 정면 가장자리에 돌출 형성되는 볼록형 밀봉라인(103);플레이트(102)의 정면 개구부(101) 주위에 형성되어 이너프레임(200)의 배면이 안착되는 이너프레임안착면(104);플레이트(102)의 정면 우측 모서리 하부에 관통 형성되는 양극전해액유입공(105);플레이트(102)의 정면 우측 모서리 상부에 관통 형성되는 양극전해액유출공(106);플레이트(102)의 정면 좌측 모서리 하부에 관통 형성되는 음극전해액유입공(107);플레이트(102)의 정면 좌측 모서리 상부에 관통 형성되는 음극전해액유출공(108);플레이트(102)의 정면 양극전해액유입공(105)으로부터 개구부(101)까지 돌출 형성되는 볼록형 양극유입채널(109);플레이트(102)의 정면 양극전해액유출공(105)으로부터 개구부(101)까지 돌출 형성되는 볼록형 양극유출채널(110);플레이트(102)의 정면 음극전해액유입공(107)으로부터 개구부(102)까지 돌출 형성되는 볼록형 음극유입채널(111);플레이트(102)의 정면 음극전해액유출공(108)으로부터 개구부(101)까지 돌출 형성되는 볼록형 음극유출채널(112);플레이트(102)의 이너프레임안착면(104)을 따라 개구부(101) 주위에 돌출 형성되는 볼록형 유로챔버(113);플레이트(102)의 볼록형 유로챔버(113)와 볼록형 양극유입채널(111)이 연통되도록 볼록형 유로챔버(113)에 형성되는 정면 양극유입게이트(114);플레이트(102)의 볼록형 유로챔버(113)와 볼록형 양극유출채널(112)이 연통되도록 볼록형 유로챔버(113)에 형성되는 정면 양극유출게이트(115);플레이트(102)의 볼록형 유로챔버(113)와 볼록형 음극유입채널(111)이 연통되도록 볼록형 유로챔버(113)에 형성되는 정면 음극유입게이트(116); 및플레이트(102)의 볼록형 유로챔버(113)와 볼록형 음극유출채널(112)이 연통되도록 볼록형 유로챔버(113)에 형성되는 정면 음극유출게이트(117)를 포함하는 것을 특징으로 하는 셀프레임 구조체.
- 제3항에 있어서, 아우터프레임(100)은,플레이트(102)의 배면 가장자리에 돌출 형성되는 오목형 밀봉라인(118);플레이트(102)의 배면 개구부(101) 주위에 형성되어 바이폴라플레이트(BP)의 정면 가장자리가 안착되는 바이폴라안착면(119);바이폴라안착면(119)의 가장자리를 따라 돌출 형성되어 이너프레임(200)의 오목형 아우터결합라인(203)이 바이폴라플레이트(BP)의 배면 가장자리 부위를 커버하면서 인터로킹 결합되도록 하는 볼록형 이너결합라인(120);플레이트(102)의 배면 좌측 모서리 하부에 형성된 양극전해액유입공(105)으로부터 개구부(101)까지 돌출 형성되는 오목형 양극유입채널(122);플레이트(102)의 배면 좌측 모서리 상부에 형성된 양극전해액유출공(106)으로부터 개구부(101)까지 돌출 형성되는 오목형 양극유출채널(123);플레이트(102)의 배면 우측 모서리 하부에 형성된 음극전해액유입공(107)으로부터 개구부(101)까지 돌출 형성되는 오목형 음극유입채널(124);플레이트(102)의 배면 우측 모서리 상부에 형성된 음극전해액유출공(108)으로부터 개구부(101)까지 돌출 형성되는 오목형 음극유출채널(125);플레이트(102)의 바이폴라안착면(119)을 따라 개구부(101) 주위에 돌출 형성되는 오목형 유로챔버(126);플레이트(102)의 오목형 유로챔버(126)와 오목형 양극유입채널(122)이 연통되도록 오목형 유로챔버(126)에 형성되는 배면 양극유입게이트(127);플레이트(102)의 오목형 유로챔버(126)와 오목형 양극유출채널(123)이 연통되도록 오목형 유로챔버(126)에 형성되는 배면 양극유출게이트(128);플레이트(102)의 오목형 유로챔버(126)와 오목형 음극유입채널(124)이 연통되도록 오목형 유로챔버(126)에 형성되는 배면 음극유입게이트(129); 및플레이트(102)의 오목형 유로챔버(126)와 오목형 음극유출채널(125)이 연통되도록 오목형 유로챔버(126)에 형성되는 배면 음극유출게이트(130)를 포함하는 것을 특징으로 하는 셀프레임 구조체.
- 제4항에 있어서, 아우터프레임(100)은,플레이트(102)의 배면으로부터 정면을 향해 음극전해액이 이동되도록 플레이트(102)의 정면 음극유입게이트(116)와 배면 음극유입게이트(129) 사이 및 플레이트(102)의 정면 음극유출게이트(117)와 배면 음극유출게이트(130) 사이에 각각 음극액이동공(131)이 관통 형성된 것을 특징으로 하는 셀프레임 구조체.
- 제5항에 있어서, 이너프레임(200)은,사각틀 형상을 가지는 커버(201);커버(201)의 정면 가장자리 내주연에 형성되어 바이폴라플레이트(BP)의 배면 가장자리 부위에 밀착되는 밀착면(202);커버(201)의 정면 가장자리에 돌출 형성되어 아우터프레임(100)의 볼록형 이너결합라인(120)에 인터로킹 결합되는 오목형 아우터결합라인(203);커버(201)의 정면 오목형 아우터결합라인(203)에 형성되고 각각 배면 양극유입게이트(127)와 배면 양극유출게이트(128)에 개방 구조로 위치되는 양극액유입가이드(204)와 양극액유출가이드(205); 및커버(201)의 정면 오목형 아우터결합라인(203)에 형성되고 각각 배면 음극유입게이트(129)와 배면 음극유출게이트(130)에 폐쇄 구조로 위치되는 음극액유입가이드(206)와 음극액유출가이드(207)를 포함하는 것을 특징으로 하는 셀프레임 구조체.
- 제6항에 있어서, 이너프레임(200)은,커버(201)의 배면에 해당되고 플레이트(102)의 배면에 인터로킹 결합된 상태에서 후단 플레이트 아우터프레임(100)의 이너프레임안착면(104)에 안착되는 아우터프레임안착면(208);아우터프레임안착면(208) 주위에 형성되고 멤브레인(M)이 안착되도록 하는 멤브레인안착면(209);양극액유입가이드(204)와 양극액유출가이드(205)의 배면에 해당되고 각각 후단 플레이트(102)의 정면 양극유입게이트(114)와 정면 양극유출게이트(115)에 밀착되는 양극게이트폐쇄편(210); 및음극액유입가이드(206)와 음극액유출가이드(207)의 배면에 해당되고 각각 후단 플레이트(102)의 정면 음극유입게이트(116)와 정면 음극유출게이트(117)에 밀착되는 음극게이트폐쇄편(211)을 포함하는 것을 특징으로 하는 셀프레임 구조체.
- 제2항 내지 제7항 중 어느 한 항에 따른 셀프레임(400);복수개의 셀프레임(400)들이 연속 배열되어 전해질의 유동에 따라 방전을 가능하게 하는 스택(S);스택(S)의 양측단에 구성되어 외부로부터 스택(S)을 보호하는 한 쌍의 엔드플레이트(P); 및엔드플레이트(P)에 위치된 상태에서 스택(S)의 복수개의 셀프레임(400)들의 양극단자와 음극단자 각각에 전기적으로 접속 구성되어 전해질의 유동에 따라 방전 동작되는 셀프레임(400)들 전체의 전하를 집전하는 전극판(E)을 포함하는 것을 특징으로 하는 레독스흐름전지.
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DE102022118666A1 (de) | 2022-07-26 | 2024-02-01 | Schaeffler Technologies AG & Co. KG | Redox-Flow-Konverter |
WO2024022554A2 (de) | 2022-07-26 | 2024-02-01 | Schaeffler Technologies AG & Co. KG | Redox-flow-konverter |
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