Metal-air battery system and method for operating same

Abstract

Provided is a metal-air battery system comprising: a metal-air battery unit including metal-air battery cells each including a metal electrode and an air electrode disposed to face each other; and an electrolyte supply unit for supplying an electrolyte between the metal electrode and the air electrode, wherein the metal-air battery unit includes a negative electrode material supply tank for replenishing the metal electrode with a negative electrode material.

Description

Metal-air battery system and its operating method

[0001] The present application relates to a metal-air battery system and an operating method thereof, and more particularly, to a metal-air battery system and an operating method thereof having excellent energy production efficiency through an impinging jet formed inside a metal-air battery cell and a cathode material supplemented inside the metal-air battery cell.

[0002]

[0003] A metal-air battery may include a metal electrode and an air electrode. In the air electrode, a reduction and / or oxidation reaction of oxygen introduced from the outside may occur, and in the metal electrode, an oxidation and / or reduction reaction of the metal may occur.

[0004] This allows electrical energy to be generated in metal-air batteries.

[0005] More specifically, a metal-air battery can generate electrical energy by absorbing oxygen contained in the air during discharge and releasing oxygen during charging.

[0006] Accordingly, metal-air batteries can be not only environmentally friendly, but also economical and have excellent stability.

[0007] Additionally, metal-air batteries can provide high energy density per unit mass by increasing the amount of metal in the metal electrode.

[0008] Accordingly, various technologies related to metal-air batteries have been disclosed in the past.

[0009] For example, Korean Patent Publication No. 10-0582251 discloses a method for producing a nano-particle catalyst electrode material for a metal / air battery, the method comprising the steps of: dissolving 1 g of manganese chloride hydrate (MnCl24H2O) in 300 ml of water; adding a sodium bisulfite (NaHSO3) solution to the solution produced through the above step and reacting for 1 to 3 hours; then adding hydrogen peroxide (H2O2) dropwise at a rate of one drop per second and reacting for 30 minutes to 3 hours; adjusting the acidity to 5 to 10 with 0.05 Wt% potassium hydroxide (KOH) to prevent a reverse reaction; forming the colloidal solution while reducing; separating particles by centrifugation from the colloidal solution formed through the step of forming the colloidal solution; and heat-treating the particles that have undergone the step of separating the particles.

[0010] For another example, Korean Patent Publication No. 10-1675479 discloses a method for producing a composite catalyst for a metal-air battery, which comprises the steps of dissolving silk fibers in a solvent to produce a silk fiber solution, adding a metal precursor and carbon black to the silk fiber solution, stirring the silk fiber solution containing the metal precursor and carbon black to produce a catalyst precursor, and heat-treating the catalyst precursor to obtain a catalyst.

[0011] However, metal-air batteries may experience a decrease in current generation due to corrosion products accumulating on the electrode surface or hydrogen bubbles generated during a reaction at the air electrode, and the temperature may increase due to hydrogen generation side reactions.

[0012] Additionally, metal-air batteries may experience a decrease in current generation due to metal deposition on the metal electrode or carbonate formation caused by dissolution of carbon dioxide in the atmosphere.

[0013] Therefore, more efficient metal-air batteries are needed.

[0014]

[0015] The technical problem to be solved by the present application is to provide a metal-air battery system and an operating method thereof that efficiently desorb hydrogen bubbles from the surfaces of metal electrodes and air electrodes of a metal-air battery cell.

[0016] Another technical problem to be solved by the present application is to provide a metal-air battery system and an operating method thereof that efficiently removes corrosion products from the surfaces of metal electrodes and air electrodes of a metal-air battery cell.

[0017] Another technical challenge that the present application seeks to address is to provide a metal-air battery system and its operating method that efficiently lowers the temperature of a metal-air battery cell.

[0018] The technical problems that this application seeks to solve are not limited to those described above.

[0019]

[0020] To solve the above technical problems, the present application provides a metal-air battery system.

[0021] According to one embodiment, the metal-air battery system includes a metal-air battery unit including a metal-air battery cell in which a metal electrode and an air electrode are arranged facing each other, and an electrolyte supply unit for supplying an electrolyte between the metal electrode and the air electrode, wherein the metal-air battery unit may include a cathode material refueling tank for replenishing a cathode material to the metal electrode.

[0022] According to one embodiment, the electrolyte supply unit may further include an electrolyte supply line that supplies the electrolyte to a passage between the metal electrode and the air electrode and circulates the electrolyte discharged from the passage, an electrolyte reservoir tank that stores the electrolyte supplied to the passage, discharged from the passage, or circulated along the electrolyte supply line, and an electrolyte supply nozzle that is connected to the electrolyte reservoir tank through the electrolyte supply line and sprays the electrolyte onto the surface of the metal electrode or the air electrode, and the spraying strength of the electrolyte is controlled.

[0023] According to one embodiment, the electrolyte supply unit may further include a heater that controls the temperature of the electrolyte stored in the electrolyte reservoir tank and supplied to the path, a first heat exchanger and a second heat exchanger that control the temperature of the electrolyte circulated along the electrolyte supply line, a filter disposed between the first heat exchanger and the second heat exchanger, and a pump disposed between the electrolyte reservoir tank and the electrolyte supply nozzle.

[0024] According to one embodiment, the metal-air battery unit further includes a hydrogen capture tank that captures hydrogen bubbles formed in the metal-air battery cell, the filter filters corrosion products formed in the metal-air battery cell, and the first heat exchanger and the second heat exchanger can lower the temperature of the metal-air battery cell.

[0025] In one embodiment, the amount of current generated in the metal-air battery unit may be increased by capturing the hydrogen bubbles, filtering out the corrosion products, or lowering the temperature.

[0026] According to one embodiment, the negative electrode material may be supplemented to the metal electrode, thereby increasing the amount of current generated in the metal-air battery unit.

[0027] According to one embodiment, the metal-air battery unit may further include a metal-air battery stack cell including at least one metal-air battery cell, and a battery connected to the metal-air battery cell to store electric energy generated from the metal-air battery cell.

[0028] According to one embodiment, the device further includes a control unit that controls the operation of the metal-air battery unit and the electrolyte supply unit, wherein the control unit controls the current intensity of the metal-air battery unit to be measured, and when the current intensity is lower than a set reference, controls the injection intensity of the electrolyte through the electrolyte supply nozzle to be increased, and when the injection intensity is increased but the amount of current generated from the metal-air battery unit does not increase, controls the supply of the electrolyte to the metal-air battery unit to be stopped, and controls the negative electrode material to be replenished from the negative electrode material tank to the metal electrode.

[0029] According to one embodiment, the negative electrode material has a paste formulation, and the metal electrode and the negative electrode material may include aluminum.

[0030]

[0031] To solve the above technical problem, the present application provides a method of operating a metal-air battery system.

[0032] According to one embodiment, the operating method of the metal-air battery system may include the steps of: measuring a current intensity of a metal-air battery unit including a metal-air battery cell in which a metal electrode and an air electrode are arranged facing each other; when the current intensity is lower than a set reference value, increasing a spray intensity of spraying an electrolyte onto a surface of the metal electrode or the air electrode through an electrolyte supply nozzle of an electrolyte supply unit that supplies an electrolyte between the metal electrode and the air electrode; when the spray intensity increases but the amount of current generated from the metal-air battery unit does not increase, stopping the supply of the electrolyte to the metal-air battery unit; and replenishing a negative electrode material to the metal electrode.

[0033] According to one embodiment, the step of increasing the injection intensity may include forming an impact jet inside the metal-air battery cell by the flow of the electrolyte with the increased injection intensity, and causing hydrogen bubbles or corrosion products to be desorbed from the surfaces of the metal electrode and the air electrode by the impact jet, or lowering the temperature of the metal-air battery cell.

[0034] According to one embodiment, when the negative electrode material is supplemented to the metal electrode, the amount of current generated in the metal-air battery unit may increase.

[0035] According to one embodiment, the electrolyte can be circulated between the metal-air battery unit and the electrolyte supply unit.

[0036]

[0037] To solve the above technical problem, the present application provides a manifold of a metal-air battery device.

[0038] According to one embodiment, the manifold of the metal-air battery device may include an electrolyte inlet portion into which an electrolyte is introduced, a branch supply portion connected to an electrolyte supply nozzle that discharges an electrolyte to a metal-air battery cell, a distribution space portion formed between the electrolyte inlet portion and the branch supply portion and forming a space in which the electrolyte introduced into the electrolyte inlet portion can flow toward the branch supply portion, and a distribution member disposed on the distribution space portion and having a guide surface that guides the electrolyte to be distributed toward a plurality of the electrolyte supply nozzles.

[0039] According to one embodiment, the distribution space may have a width that expands from the electrolyte inlet portion toward the branch supply portion.

[0040] According to one embodiment, the side of the distribution space portion may be formed to be inclined in any one of a straight line, a curved line, and a stepped shape.

[0041] According to one embodiment, a plurality of the electrolyte supply nozzles are arranged in the x direction and positioned in the -y direction of the electrolyte inlet portion, and the electrolyte can flow in the -y direction in the distribution space portion and be distributed in the +x direction and the -x direction by contacting the guide surface of the distribution member.

[0042] According to one embodiment, a plurality of the distribution members are arranged spaced apart from each other, and a passage through which the electrolyte can flow in the x-direction and y-direction can be formed between the distribution members.

[0043] According to one embodiment, the distribution member may include a first extension portion formed to extend in the +x direction so as to guide the electrolyte in the +x direction, and a second extension portion formed to extend in the -x direction so as to guide the electrolyte in the -x direction.

[0044] According to one embodiment, the first extension portion may be formed to be inclined in the -y direction toward the electrolyte supply nozzle located in the +x direction, and the second extension portion may be formed to be inclined in the -y direction toward the electrolyte supply nozzle located in the -x direction.

[0045] According to one embodiment, the distribution member may further include a third extension formed between the first extension and the second extension, and formed to extend in the +y direction.

[0046] According to one embodiment, the distribution member may be formed to extend in the x direction with the guide surface having a flat shape so that the electrolyte that reaches any point on the guide surface can be distributed in the +x direction and the -x direction.

[0047] According to one embodiment, the distribution member may form a first row formed by one distribution member or by arranging a plurality of distribution members in the x-direction.

[0048] According to one embodiment, the distribution member may be arranged in the -y direction of the first row, and a second row may be formed in which a greater number of the distribution members than the first row are arranged in the x direction, some of the plurality of distribution members are positioned in the +x direction of the first row, and other parts of the plurality of distribution members are positioned in the -x direction of the first row.

[0049] In one embodiment, some of the plurality of distribution members may have a first shape, and other some of the plurality of distribution members may have a second shape different from the first shape.

[0050] According to one embodiment, the distribution member of the first row may have the first shape, and the distribution member of the second row may have the second shape.

[0051] In one embodiment, some of the plurality of distribution members may have a first length in the x-direction, and other some of the plurality of distribution members may have a second length different from the first length.

[0052] According to one embodiment, the distribution member of the first row may have the first length, and the distribution member of the second row may have the second length.

[0053]

[0054] To solve the above technical problem, the present application provides a metal-air battery device.

[0055] According to one embodiment, the metal-air battery device may include a metal-air battery cell having a metal electrode and an air electrode, an electrolyte supply nozzle for discharging an electrolyte to the metal-air battery cell, an electrolyte inlet portion through which the electrolyte is introduced, a branch supply portion connected to the electrolyte supply nozzle, a distribution space portion formed between the electrolyte inlet portion and the branch supply portion, and a distribution member having a guide surface disposed on the distribution space portion and guiding the electrolyte to be distributed toward a plurality of the electrolyte supply nozzles.

[0056] According to one embodiment, the electrolyte supply nozzle may include a first region connected to one side of the branch supply unit, and a second region spaced apart from the first region and connected to the other side of the branch supply unit, wherein a discharge port for discharging the electrolyte is formed in at least one of the metal electrode and the air electrode.

[0057] According to one embodiment, the second region may have an extended shape identical to or symmetrical to the first region and may be arranged parallel to the first region.

[0058]

[0059] To solve the above technical problem, the present application provides a metal-air battery device.

[0060] According to one embodiment, the metal-air battery device includes a metal-air battery cell having a metal electrode and an air electrode, and an electrolyte supply unit for supplying an electrolyte to the metal-air battery cell, and the electrolyte supply unit may include a cell distribution supply line formed to extend along an arrangement direction of the metal-air battery cells so as to supply an electrolyte to a plurality of the metal-air battery cells, an electrolyte supply nozzle for discharging an electrolyte to at least one of the metal electrode and the air electrode, and a manifold including an electrolyte inlet unit connected to the cell distribution supply line, a branch supply unit connected to the electrolyte supply nozzle, a distribution space unit formed between the electrolyte inlet unit and the branch supply unit, and a distribution member disposed on the distribution space unit and having a guide surface for guiding the electrolyte to be distributed toward the plurality of the electrolyte supply nozzles.

[0061] According to one embodiment, the electrolyte supply unit may further include an electrolyte supply line forming a circulation path for supplying electrolyte discharged from the metal-air battery cell back to the metal-air battery cell, a pump installed on the electrolyte supply line, and a heat exchanger for controlling the temperature of the electrolyte circulating along the electrolyte supply line.

[0062]

[0063] According to an embodiment of the present application, a metal-air battery system may be provided, including a metal-air battery unit including a metal-air battery cell in which a metal electrode and an air electrode are arranged facing each other, and an electrolyte supply unit for supplying an electrolyte between the metal electrode and the air electrode, wherein the metal-air battery unit includes a cathode material refueling tank for replenishing a cathode material to the metal electrode.

[0064] Accordingly, according to the present application, the negative electrode material stored or kept in the negative electrode material fuel tank can be easily and quickly charged or replenished to the metal electrode, thereby substantially without interrupting the operation of the metal-air battery cell, and the energy source of the metal-air battery cell can be quickly charged or replenished.

[0065] In other words, according to the present application, not only can the time delay and complicated procedure for charging or replenishing the negative electrode material to the metal electrode be minimized, but the operation of the metal-air battery cell can be continued without being substantially interrupted even while the negative electrode material is being charged or replenished to the metal electrode.

[0066] Accordingly, according to the present application, the amount of current generated in the metal-air battery cell can be increased compared to before the negative electrode material is charged or replenished, and the maintenance efficiency of the metal-air battery cell can be greatly improved.

[0067] Therefore, the present invention can be applied to various mobility fields. For example, urban air mobility (UAM) may require high energy density and rapid energy charging. The rapid energy supply and simplified procedure of the metal-air battery cell according to the present invention can meet these requirements.

[0068] In addition, according to an embodiment of the present application, the metal-air battery system may further include an electrolyte supply nozzle that sprays the electrolyte onto the surface of the metal electrode or the air electrode, and the spraying strength of the electrolyte is controlled.

[0069] Accordingly, according to the present application, when the injection strength of the electrolyte is increased through the electrolyte supply nozzle, a collision jet may be formed inside the metal-air battery cell according to the flow of the electrolyte. The collision jet according to the flow of the electrolyte may detach the hydrogen bubbles and / or the corrosion products formed on the surface of the metal electrode and / or the air electrode from the surface of the metal electrode and / or the air electrode. In addition, the collision jet according to the flow of the electrolyte may effectively remove heat energy generated due to a chemical reaction occurring between the metal electrode and the air electrode. Furthermore, the collision jet according to the flow of the electrolyte may increase the flow complexity of the electrolyte inside the metal-air battery cell.

[0070] Accordingly, according to the present application, the vortex and mixing flow of the electrolyte inside the metal-air battery cell can be activated, and accordingly, the energy production efficiency of the metal-air battery cell can be greatly improved.

[0071]

[0072] FIG. 1 is a block diagram illustrating a metal-air battery system according to a first embodiment of the present application.

[0073] FIG. 2 is a circuit diagram for explaining a metal-air battery system according to a first embodiment of the present application.

[0074] FIG. 3 is a drawing for explaining an operating method of a metal-air battery system according to a first embodiment of the present application.

[0075] FIG. 4 is a drawing for explaining a metal-air battery cell according to a first embodiment of the present application.

[0076] FIG. 5 is a drawing for explaining an electrolyte supply unit and an electrolyte supply nozzle according to the first embodiment of the present application.

[0077] FIG. 6 is a drawing for explaining an electrolyte sprayed into a metal-air battery cell through an electrolyte supply nozzle according to the first embodiment of the present application.

[0078] FIG. 7 is a drawing for explaining an electrolyte supply nozzle according to the first and second embodiments of the present application.

[0079] FIG. 8 is a drawing for explaining an electrolyte supply nozzle according to the first to third embodiment of the present application.

[0080] FIG. 9 is a drawing for explaining an electrolyte supply nozzle according to various embodiments of the present application.

[0081] FIG. 10 is a drawing for explaining an electrolyte supply nozzle according to the first to fourth embodiments of the present application.

[0082] FIG. 11 is a drawing for explaining an electrolyte sprayed into a metal-air battery cell through an electrolyte supply nozzle according to the first to fifth embodiment of the present application.

[0083] FIG. 12 is a drawing for explaining an electrolyte supply nozzle according to the first to sixth embodiment of the present application.

[0084] FIG. 13 is a drawing for explaining an electrolyte supply nozzle according to the first to seventh embodiment of the present application.

[0085] FIG. 14 is a drawing for explaining an electrolyte supply nozzle according to the first to eighth embodiment of the present application.

[0086] FIG. 15 is a drawing for explaining an electrolyte supply nozzle according to the first to ninth embodiment of the present application.

[0087] FIG. 16 is a drawing for explaining an electrolyte supply nozzle according to the first to tenth embodiment of the present application.

[0088] FIG. 17 is a drawing for explaining an electrolyte sprayed into a metal-air battery cell through an electrolyte supply nozzle according to the first to eleventh embodiment of the present application.

[0089] FIG. 18 is a drawing for explaining an electrolyte sprayed into a metal-air battery cell through an electrolyte supply nozzle according to the first to twelfth embodiment of the present application.

[0090] FIG. 19 is a schematic diagram illustrating a metal-air battery device according to the second embodiment of the present invention.

[0091] Figure 20 is an enlarged view of the main part of Figure 19.

[0092] Figure 21 is an enlarged view of part A of Figure 20.

[0093] FIG. 22 is a schematic drawing of a manifold of a metal-air battery device according to the second embodiment of the present invention.

[0094] Figure 23 is an enlarged view of part B of Figure 21.

[0095] FIG. 24 is a schematic drawing of a second embodiment of a distribution space portion of a manifold of a metal-air battery device according to the present invention.

[0096] FIG. 25 is a schematic drawing of a second embodiment of a distribution space portion of a manifold of a metal-air battery device according to the present invention.

[0097] FIG. 26 is a schematic drawing of a second embodiment of a distribution space portion of a manifold of a metal-air battery device according to the present invention.

[0098] FIG. 27 is a schematic drawing of a second-fourth embodiment of a distribution space portion of a manifold of a metal-air battery device according to the present invention.

[0099] FIG. 28 is a schematic drawing of a distribution member of a manifold of a metal-air battery device according to the second embodiment of the present invention.

[0100] FIG. 29 is a schematic diagram showing the electrolyte flow in a manifold of a metal-air battery device according to the second embodiment of the present invention.

[0101] FIG. 30 is a schematic drawing of a manifold of a metal-air battery device according to the second embodiment of the present invention.

[0102] FIG. 31 is a schematic drawing of a distribution member of a manifold of a metal-air battery device according to the second embodiment of the present invention.

[0103] FIG. 32 is a schematic diagram showing the electrolyte flow in a manifold of a metal-air battery device according to the second embodiment of the present invention.

[0104] FIG. 33 is a schematic drawing of a manifold of a metal-air battery device according to the second-third embodiment of the present invention.

[0105] FIG. 34 is a schematic diagram showing the electrolyte flow in a manifold of a metal-air battery device according to the second-third embodiment of the present invention.

[0106] FIG. 35 is a schematic drawing of a manifold of a metal-air battery device according to the second to fourth embodiment of the present invention.

[0107] FIG. 36 is a schematic diagram showing the electrolyte flow in a manifold of a metal-air battery device according to the second-fourth embodiment of the present invention.

[0108]

[0109] Hereinafter, preferred embodiments of the present application will be described in detail with reference to the attached drawings. However, the technical concepts of the present application are not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided to ensure that the disclosed content is thorough and complete and to sufficiently convey the concepts of the present application to those skilled in the art.

[0110] In this specification, when a component is referred to as being on another component, it means that it can be formed directly on the other component, or a third component may be interposed between them. Furthermore, in the drawings, the thicknesses of films and regions are exaggerated for the purpose of effectively explaining the technical content.

[0111] Additionally, although terms such as first, second, and third have been used to describe various components in various embodiments of this specification, these components should not be limited by these terms. These terms are only used to distinguish one component from another. Thus, what is referred to as a first component in one embodiment may be referred to as a second component in another embodiment. Each embodiment described and illustrated herein also includes its complementary embodiments. Additionally, the term "and / or" has been used herein to mean including at least one of the components listed before and after.

[0112] In the specification, singular expressions include plural expressions unless the context clearly dictates otherwise. In addition, terms such as "comprise" or "have" are intended to specify the presence of a feature, number, step, component, or combination thereof described in the specification, and should not be construed as excluding the presence or addition of one or more other features, numbers, steps, components, or combinations thereof. In addition, the term "connection" is used in the present specification to mean both indirectly connecting multiple components and directly connecting them.

[0113] In addition, when describing the present application below, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the gist of the present application, the detailed description will be omitted.

[0114]

[0115] Hereinafter, a first embodiment of the present application is described. The first embodiment of the present application may include embodiments 1-1 to 1-12 described below.

[0116] FIG. 1 is a block diagram for explaining a metal-air battery system according to a first embodiment of the present application, and FIG. 2 is a circuit diagram for explaining a metal-air battery system according to a first embodiment of the present application.

[0117] Referring to FIGS. 1 and 2, the metal-air battery system (1000) may include a metal-air battery unit (100) that generates electrical energy, an electrolyte supply unit (200) that supplies electrolyte to the metal-air battery unit (100), and a control unit (300) that controls the operation of the metal-air battery unit (100) and the electrolyte supply unit (200).

[0118] According to one embodiment, the metal-air battery unit (100) may include a metal-air battery stack cell (110) including at least one (120: 120a, 120b...120n) metal-air battery cell (120) in which a metal electrode (121, see FIG. 4) and an air electrode (122, see FIG. 4) are arranged facing each other, as illustrated in FIG. 1, a cathode material refueling tank (130) for replenishing a cathode material to the metal electrode (121), a hydrogen capture tank (140) for capturing hydrogen bubbles formed in the metal-air battery cell (120), and a battery (150) connected to the metal-air battery cell (120) for storing electric energy generated in the metal-air battery cell (120).

[0119] Referring to FIGS. 1 and 2, the metal-air battery stack cell (110) includes at least one metal-air battery cell (120: 120a, 120b...120n), and the metal electrode (121) of the metal-air battery cell (120) can be connected to the negative electrode material fuel tank (130). A valve can be arranged in a connection path between the metal electrode (121) and the negative electrode material fuel tank (130).

[0120] According to one embodiment, the negative electrode material may have a paste formulation.

[0121] Due to this, the negative electrode material can be easily stored in the negative electrode material refueling tank (130), and can also be easily injected from the negative electrode material refueling tank (130) into the metal electrode (121). The metal electrode (121) and the negative electrode material may be, for example, aluminum, but are not limited thereto.

[0122] According to one embodiment, when the valve is controlled to open through the control unit (300) described below, the negative electrode material in the negative electrode material refueling tank (130) can be supplied to the metal electrode (121). In other words, according to the embodiment of the present application, the negative electrode material stored or kept in the negative electrode material refueling tank (130) can be quickly and easily charged or replenished to the metal electrode (121).

[0123] Accordingly, according to the present application, the negative electrode material stored or kept in the negative electrode material fuel tank (130) can be easily and quickly charged or replenished to the metal electrode (121), so that the operation of the metal-air battery cell (120) is substantially not interrupted, and the energy source of the metal-air battery cell (120) can be quickly charged or replenished.

[0124] In other words, according to the present application, the metal electrode (121) and the negative electrode material tank (130) can be directly connected, and accordingly, not only can the time delay and complicated procedure for charging or replenishing the negative electrode material to the metal electrode (121) be minimized, but also, even while the negative electrode material is being charged or replenished to the metal electrode (121), the operation of the metal-air battery cell (120) can be continued without being substantially interrupted.

[0125] Accordingly, according to the present application, the amount of current generated in the metal-air battery cell (120) can be increased compared to before the negative electrode material is charged or replenished, and the maintenance efficiency of the metal-air battery cell (120) can be greatly improved.

[0126] Therefore, the present invention can be applied to various mobility fields. For example, urban air mobility (UAM) may require high energy density and rapid energy charging. The rapid energy supply and simplified procedure of the metal-air battery cell (120) according to the present invention can meet these requirements.

[0127] Continuing with reference to FIGS. 1 and 2, the metal-air battery stack cell (110) includes at least one metal-air battery cell (120: 120a, 120b...120n), and the metal-air battery cell (120) can be connected to the hydrogen capture tank (140). A valve can be arranged in a connection path between the metal-air battery cell (120) and the hydrogen capture tank (140).

[0128] Accordingly, when the valve is controlled to open through the control unit (300), the hydrogen bubbles formed in the metal-air battery cell (120) can be captured in the hydrogen capture tank (140). The hydrogen bubbles can be formed through a chemical reaction occurring between the metal electrode (121) and the air electrode (122) of the metal-air battery cell (120). The hydrogen bubbles can form a film on the surface of the metal electrode (121) and / or the air electrode (122). As a result, the contact between the metal electrode (121) and / or the air electrode (122) and the electrolyte can be reduced, and thus, the energy production efficiency of the metal-air battery cell (120) can be reduced.

[0129] However, according to an embodiment of the present application, the hydrogen bubbles formed in the metal-air battery cell (120) can be captured.

[0130] To this end, referring to FIG. 4, the electrolyte supply nozzles (230, 231, 232) described below may be arranged adjacent to the metal electrode (121) and the air electrode (122) inside the metal-air battery cell (120). In order to capture the hydrogen bubbles, the spraying intensity of the electrolyte sprayed onto the surface of the metal electrode (121) or the air electrode (122) through the electrolyte supply nozzles (230 to 232) may be increased. As the spraying intensity is increased, the electrolyte sprayed from the electrolyte supply nozzles (230 to 232) may flow inside the metal-air battery cell (120) and form an impingement jet inside the metal-air battery cell (120). The collision jet according to the flow of the electrolyte can cause the hydrogen bubbles formed on the surface of the metal electrode (121) and / or the air electrode (122) to be detached from the surface of the metal electrode (121) and / or the air electrode (122). The hydrogen bubbles detached from the surface of the metal electrode (121) and / or the air electrode (122) can be moved to and captured in the hydrogen capture tank (140) when the valve of the connection path connecting the metal-air battery cell (120) and the hydrogen capture tank (140) is opened.

[0131] Furthermore, the collision jet according to the flow of the electrolyte can increase the flow complexity of the electrolyte inside the metal-air battery cell (120).

[0132] Accordingly, according to the present application, the eddy current and mixed flow of the electrolyte inside the metal-air battery cell (120) can be activated, and accordingly, the energy production efficiency of the metal-air battery cell (120) can be greatly improved.

[0133] In addition, according to an embodiment of the present application, the temperature of the metal-air battery cell (120) can be lowered through the collision jet and / or the first heat exchanger and the second heat exchanger (250, 270) described below according to the flow of the electrolyte.

[0134] More specifically, the heat energy generated due to the chemical reaction occurring between the metal electrode (121) and the air electrode (122) can be effectively removed by the collision jet according to the flow of the electrolyte supplied to the path between the metal electrode (121) and the air electrode (122).

[0135] In addition, the electrolyte supplied to the path between the metal electrode (121) and the air electrode (122) may be discharged from the path and circulated along the electrolyte supply line (280) described later, as illustrated in FIG. 2. The electrolyte circulated along the electrolyte supply line (280) may be heat-exchanged through the first heat exchanger and the second heat exchanger (250, 270) disposed in the electrolyte supply line (280), thereby lowering its temperature. The electrolyte, whose temperature has been lowered, may be circulated along the electrolyte supply line (280) and provided to the metal-air battery cell (120) again, thereby lowering the temperature of the metal-air battery cell (120).

[0136] Accordingly, according to the present application, the amount of current generated from the metal-air battery cell (120) can be increased compared to before the temperature of the metal-air battery cell (120) is lowered. Furthermore, since the temperature of the metal-air battery cell (120) is maintained uniformly, the stability of the metal-air battery cell (120) can be significantly improved.

[0137] In addition, according to an embodiment of the present application, the injection strength of the electrolyte is increased through the electrolyte supply nozzles (230 to 232), so that corrosion products formed in the metal-air battery cell (120) can be filtered by the filter (260) described below. The corrosion products can be formed through a parasitic reaction occurring between the metal electrode (121) and the air electrode (122) of the metal-air battery cell (120). The corrosion products can accumulate on the surface of the metal electrode (121) and / or the air electrode (122). As a result, the reactivity of the metal electrode (121) and / or the air electrode (122) can be reduced, and thus, the energy production efficiency of the metal-air battery cell (120) can be reduced.

[0138] However, according to an embodiment of the present application, the corrosion product formed in the metal-air battery cell (120) can be filtered.

[0139] To this end, the spray intensity with which the electrolyte is sprayed onto the surface of the metal electrode (121) or the air electrode (122) through the electrolyte supply nozzles (230 to 232) can be increased. As the spray intensity is increased, the electrolyte sprayed from the electrolyte supply nozzles (230 to 232) can flow inside the metal-air battery cell (120) and form a collision jet inside the metal-air battery cell (120). The collision jet according to the flow of the electrolyte can detach the corrosion product formed on the surface of the metal electrode (121) and / or the air electrode (122) from the surface of the metal electrode (121) and / or the air electrode (122). The corrosion products detached from the surface of the metal electrode (121) and / or the air electrode (122) may be discharged from the passage together with the electrolyte supplied to the passage between the metal electrode (121) and the air electrode (122) and may move along the electrolyte supply line (280), as illustrated in FIG. 2. The corrosion products moved together with the electrolyte along the electrolyte supply line (280) may be filtered by a filter (260) disposed between the first heat exchanger and the second heat exchanger (250, 270) in the electrolyte supply line (280).

[0140] Accordingly, the corrosion products detached from the surface of the metal electrode (121) and / or the air electrode (122) and moved together with the electrolyte can be filtered through the filter (260). The electrolyte from which the corrosion products have been filtered can be circulated along the electrolyte supply line (280) and supplied again to the metal-air battery cell (120), and thus, the corrosion products can be minimized in the metal-air battery cell (120).

[0141] Accordingly, according to the present application, the amount of current generated from the metal-air battery cell (120) can be increased, and the energy production efficiency of the metal-air battery cell (120) can be greatly improved.

[0142] Meanwhile, even though the injection strength of the electrolyte is increased through the electrolyte supply nozzles (230 to 232), and the collision jet is formed inside the metal-air battery cell (120), the amount of current generated from the metal-air battery cell (120) may not increase.

[0143] In this case, according to the embodiment of the present application, the negative electrode material can be replenished to the metal electrode (121) through the negative electrode material refueling tank (130).

[0144] Due to this, the amount of current generated from the metal-air battery cell (120) can increase.

[0145] In other words, according to the embodiment of the present application, the injection strength of the electrolyte is increased through the electrolyte supply nozzles (230 to 232), so that the collision jet is formed inside the metal-air battery cell (120), and by the collision jet, the hydrogen bubbles are captured, the corrosion products are filtered, or the temperature is lowered, so that the amount of current generated from the metal-air battery cell (120) can increase. On the other hand, when the amount of current generated from the metal-air battery cell (120) does not increase despite the formation of the collision jet by increasing the injection strength, the negative electrode material can be replenished to the metal electrode (121) through the negative electrode material refueling tank (130).

[0146] Due to this, the amount of current generated from the metal-air battery cell (120) can increase.

[0147] Continuing with reference to FIGS. 1 and 2, the metal-air battery stack cell (110) includes at least one metal-air battery cell (120: 120a, 120b...120n), and the metal-air battery cell (120) can be electrically connected to the battery (150).

[0148] Accordingly, the electric energy generated in the metal-air battery cell (120) can be stored in the battery (150).

[0149] According to one embodiment, the electrolyte supply unit (200) includes an electrolyte supply line (280) that supplies the electrolyte to a passage between the metal electrode (121) and the air electrode (122) and circulates the electrolyte discharged from the passage, an electrolyte supply nozzle (230-232) that is connected to the electrolyte supply line (280) and sprays the electrolyte onto the surface of the metal electrode (121) or the air electrode (122) and the spraying intensity of the electrolyte is controlled, an electrolyte reservoir tank (210) that stores the electrolyte supplied to the passage, discharged from the passage, or circulated along the electrolyte supply line (280), a heater (240) that is stored in the electrolyte reservoir tank (210) and controls the temperature of the electrolyte supplied to the passage, and a first heat exchanger and a second heat exchanger (250) that control the temperature of the electrolyte circulated along the electrolyte supply line (280). 270), a filter (260) disposed between the first heat exchanger and the second heat exchanger (250, 270), and a pump (220) disposed between the electrolyte reservoir tank (210) and the electrolyte supply nozzles (230 to 232).

[0150] Referring to FIGS. 1 and 2, the electrolyte reservoir tank (210) may store the electrolyte supplied to the flow path between the metal electrode (121) and the air electrode (122), discharged from the flow path, or circulated along the electrolyte supply line (280). More specifically, referring to FIG. 2, the electrolyte reservoir tank (210) may be disposed between the second heat exchanger (270) and the hydrogen capture tank (140) in the electrolyte supply line (280).

[0151] Accordingly, the electrolyte reservoir tank (210) can be stored by allowing the hydrogen bubbles to be captured through the hydrogen capture tank (140), the temperature to be lowered through heat exchange through the first heat exchanger and the second heat exchanger (250, 270), and the corrosion products to be filtered through the filter (260). Meanwhile, the stored electrolyte can be introduced into the metal-air battery stack cell (110) when a valve disposed between the electrolyte reservoir tank (210) and the metal-air battery stack cell (110) in the electrolyte supply line (280) is opened.

[0152] In other words, according to the embodiment of the present application, along the electrolyte supply line (280), the hydrogen bubbles are captured, the temperature is lowered, and the corrosion products are filtered and the electrolyte can be circulated.

[0153] Accordingly, according to the embodiment of the present application, energy production efficiency can be excellent.

[0154] Continuing with reference to FIGS. 1 and 2, the pump (220) may be placed between the electrolyte reservoir tank (210) and the electrolyte supply nozzles (230 to 232).

[0155] Accordingly, the injection strength of the electrolyte stored in the electrolyte reservoir tank (210) through the electrolyte supply nozzle (230-232) can be increased by the pump (220).

[0156] Continuing with reference to FIGS. 1 and 2, the electrolyte supply nozzles (230 to 232) are connected to the electrolyte reservoir tank (210) via the electrolyte supply line (280). Referring to FIG. 4, the electrolyte supply nozzles (230 to 232) may be arranged adjacent to the metal electrode (121) and the air electrode (122) inside the metal-air battery cell (120). The electrolyte supply nozzles (230 to 232) spray the electrolyte onto the surface of the metal electrode (121) or the air electrode (122), and the spraying strength of the electrolyte can be adjusted. The spraying strength of the electrolyte can be adjusted by controlling the pump (220) via the control unit (300).

[0157] According to one embodiment, the injection strength of the electrolyte sprayed onto the surface of the metal electrode (121) or the air electrode (122) may be increased through the electrolyte supply nozzles (230 to 232). As the injection strength is increased, the electrolyte sprayed from the electrolyte supply nozzles (230 to 232) may flow inside the metal-air battery cell (120) and form a collision jet inside the metal-air battery cell (120). The collision jet according to the flow of the electrolyte may cause the hydrogen bubbles formed on the surface of the metal electrode (121) and / or the air electrode (122) to be desorbed from the surface of the metal electrode (121) and / or the air electrode (122). The hydrogen bubbles released from the surface of the metal electrode (121) and / or the air electrode (122) can be moved to and captured in the hydrogen capture tank (140) when the valve of the connection path connecting the metal-air battery cell (120) and the hydrogen capture tank (140) is opened.

[0158] Furthermore, the collision jet according to the flow of the electrolyte sprayed through the electrolyte supply nozzle (230-232) can increase the flow complexity of the electrolyte inside the metal-air battery cell (120).

[0159] Accordingly, according to the present application, the eddy current and mixed flow of the electrolyte inside the metal-air battery cell (120) can be activated, and accordingly, the energy production efficiency of the metal-air battery cell (120) can be greatly improved.

[0160] In addition, according to an embodiment of the present application, the temperature of the metal-air battery cell (120) can be lowered by the collision jet according to the flow of the electrolyte sprayed through the electrolyte supply nozzle (230-232).

[0161] More specifically, through the electrolyte supply nozzles (230 to 232), the heat energy generated by the chemical reaction occurring between the metal electrode (121) and the air electrode (122) can be effectively removed by the collision jet according to the flow of the electrolyte supplied to the passage between the metal electrode (121) and the air electrode (122).

[0162] Accordingly, according to the present application, the amount of current generated from the metal-air battery cell (120) can be increased compared to before the temperature of the metal-air battery cell (120) is lowered. Furthermore, since the temperature of the metal-air battery cell (120) is maintained uniformly, the stability of the metal-air battery cell (120) can be significantly improved.

[0163] In addition, according to an embodiment of the present application, the collision jet according to the flow of the electrolyte sprayed through the electrolyte supply nozzle (230-232) can detach the corrosion product formed on the surface of the metal electrode (121) and / or the air electrode (122) from the surface of the metal electrode (121) and / or the air electrode (122). The corrosion product detached from the surface of the metal electrode (121) and / or the air electrode (122) can be discharged from the passage together with the electrolyte supplied to the passage between the metal electrode (121) and the air electrode (122), and can move along the electrolyte supply line (280), as illustrated in FIG. 2. The corrosion product moved together with the electrolyte along the electrolyte supply line (280) can be filtered by the filter (260) disposed between the first heat exchanger and the second heat exchanger (250, 270) in the electrolyte supply line (280).

[0164] Accordingly, the corrosion products detached from the surface of the metal electrode (121) and / or the air electrode (122) and moved together with the electrolyte can be filtered through the filter (260). The electrolyte from which the corrosion products have been filtered can be circulated along the electrolyte supply line (280) and supplied again to the metal-air battery cell (120), and thus, the corrosion products can be minimized in the metal-air battery cell (120).

[0165] Accordingly, according to the present application, the amount of current generated from the metal-air battery cell (120) can be increased, and the energy production efficiency of the metal-air battery cell (120) can be greatly improved.

[0166] Continuing with reference to FIGS. 1 and 2, the heater (240) can control the temperature of the electrolyte stored in the electrolyte reservoir tank (210) and supplied to the flow path between the metal electrode (121) and the air electrode (122). Meanwhile, the metal-air battery cell (120) and / or the metal-air battery stack cell (110) can include a temperature sensor, and the first heat exchanger and the second heat exchanger (250, 270) can also include a temperature sensor.

[0167] Accordingly, according to the present application, the temperature measured by the temperature sensor of the metal-air battery cell (120) and / or the metal-air battery stack cell (110) can be compared with the temperature measured by the temperature sensors of the first heat exchanger and the second heat exchanger (250, 270), and by the control of the control unit (300), the temperature of the metal-air battery cell (120) can be set to an optimal temperature for a chemical reaction.

[0168] Accordingly, the energy production efficiency of the metal-air battery cell (120) can be greatly improved.

[0169] Continuing with reference to FIGS. 1 and 2, the first heat exchanger and the second heat exchanger (250, 270) can control the temperature of the electrolyte circulated along the electrolyte supply line (280).

[0170] More specifically, the electrolyte supplied to the passage between the metal electrode (121) and the air electrode (122) can be discharged from the passage and circulated along the electrolyte supply line (280), as illustrated in FIG. 2. The electrolyte circulated along the electrolyte supply line (280) can be heat-exchanged through the first heat exchanger and the second heat exchanger (250, 270) disposed in the electrolyte supply line (280), thereby lowering its temperature. The electrolyte, whose temperature has been lowered, can be circulated along the electrolyte supply line (280) and provided to the metal-air battery cell (120) again, thereby lowering the temperature of the metal-air battery cell (120).

[0171] Accordingly, according to the present application, the amount of current generated from the metal-air battery cell (120) can be increased compared to before the temperature of the metal-air battery cell (120) is lowered. Furthermore, since the temperature of the metal-air battery cell (120) is maintained uniformly, the stability of the metal-air battery cell (120) can be significantly improved.

[0172] Continuing with reference to FIGS. 1 and 2, the filter (260) is disposed between the first heat exchanger and the second heat exchanger (250, 270), and can filter the corrosion products formed and detached on the surface of the metal electrode (121) and / or the air electrode (122).

[0173] More specifically, the corrosion product formed on the surface of the metal electrode (121) and / or the air electrode (122) can be detached by the collision jet according to the flow of the electrolyte sprayed through the electrolyte supply nozzle (230-232). The detached corrosion product can be discharged from the passage together with the electrolyte supplied to the passage between the metal electrode (121) and the air electrode (122) and moved along the electrolyte supply line (280), as illustrated in FIG. 2.

[0174] Accordingly, the filter (260) can filter the corrosion products that are detached from the surface of the metal electrode (121) and / or the air electrode (122) and moved along the electrolyte supply line (280). The electrolyte from which the corrosion products have been filtered can be circulated along the electrolyte supply line (280) and supplied again to the metal-air battery cell (120), and thus the corrosion products can be minimized in the metal-air battery cell (120).

[0175] Accordingly, according to the present application, the amount of current generated from the metal-air battery cell (120) can be increased, and the energy production efficiency of the metal-air battery cell (120) can be greatly improved.

[0176] Continuing with reference to FIGS. 1 and 2, the electrolyte supply line (280) can supply the electrolyte to the path between the metal electrode (121) and the air electrode (122) and circulate the electrolyte discharged from the path.

[0177] More specifically, referring to FIG. 2, the electrolyte supply line (280) connects the electrolyte reservoir tank (210), the pump (220), the electrolyte supply nozzle (230), the heater (240), the first heat exchanger (250), the filter (260), and the second heat exchanger (270), and can cause the electrolyte to flow along the connection path of the electrolyte reservoir tank (210), the pump (220), the electrolyte supply nozzle (230), the heater (240), the first heat exchanger (250), the filter (260), and the second heat exchanger (270). In addition, the electrolyte supply line (280) can circulate the electrolyte along the connection path.

[0178] According to one embodiment, during the process of the electrolyte flowing or circulating along the electrolyte supply line (280), the hydrogen bubbles may be captured from the electrolyte through the hydrogen capture tank (140), the temperature of the electrolyte may be lowered through the first heat exchanger and the second heat exchanger (250, 270), and the corrosion products may be filtered from the electrolyte through the filter (260). Meanwhile, the electrolyte, in which the hydrogen bubbles are captured, the temperature is lowered, and the corrosion products are filtered along the electrolyte supply line (280), may be re-introduced into the metal-air battery stack cell (110).

[0179] Accordingly, according to the embodiment of the present application, energy production efficiency can be excellent.

[0180] According to one embodiment, the control unit (300) may control the operation of at least one of the components of the metal-air battery unit (100), namely, the metal-air battery stack cell (110), the metal-air battery cell (120), the negative electrode material refueling tank (130), the hydrogen capture tank (140), and the battery (150), and the components of the electrolyte supply unit (200), namely, the electrolyte reservoir tank (210), the pump (220), the electrolyte supply nozzle (230), the heater (240), the first heat exchanger (250), the filter (260), and the second heat exchanger (270).

[0181] According to one embodiment, the control unit (300) may control the current intensity of the metal-air battery cell (120) and / or the metal-air battery stack cell (110) to be measured through a current measuring device connected to the metal-air battery unit (100), more specifically, the metal-air battery cell (120) and / or the metal-air battery stack cell (110). When the measured current intensity is lower than a set reference, the control unit (300) may control the injection intensity of the electrolyte through the electrolyte supply nozzles (230 to 232) to be increased. When the injection intensity of the electrolyte injected from the electrolyte supply nozzles (230 to 232) is increased, a collision jet may be formed inside the metal-air battery cell (120) due to the flow of the electrolyte. The collision jet according to the flow of the electrolyte can detach the hydrogen bubbles and / or the corrosion products formed on the surface of the metal electrode (121) and / or the air electrode (122) from the surface of the metal electrode (121) and / or the air electrode (122). In addition, the collision jet according to the flow of the electrolyte can effectively remove the heat energy generated due to the chemical reaction occurring between the metal electrode (121) and the air electrode (122). Furthermore, the collision jet according to the flow of the electrolyte can increase the flow complexity of the electrolyte inside the metal-air battery cell (120).

[0182] Accordingly, according to the present application, the eddy current and mixed flow of the electrolyte inside the metal-air battery cell (120) can be activated, and accordingly, the energy production efficiency of the metal-air battery cell (120) can be greatly improved.

[0183] According to one embodiment, the control unit (300) may control the supply of the electrolyte to the metal-air battery unit (100) to be stopped when the injection intensity increases but the amount of current generated from the metal-air battery unit (100) does not increase. Continuing, the control unit (300) may control the supply of the negative electrode material from the negative electrode material refueling tank (130) to the metal electrode.

[0184] Accordingly, the negative electrode material of the negative electrode material refueling tank (130) can be provided to the metal electrode (121). In other words, according to the embodiment of the present application, the negative electrode material stored or kept in the negative electrode material refueling tank (130) can be quickly and easily charged or replenished to the metal electrode (121).

[0185] Accordingly, according to the present application, the negative electrode material stored or kept in the negative electrode material fuel tank (130) can be easily and quickly charged or replenished to the metal electrode (121), so that the operation of the metal-air battery cell (120) is substantially not interrupted, and the energy source of the metal-air battery cell (120) can be quickly charged or replenished.

[0186] In other words, according to the present application, the metal electrode (121) and the negative electrode material tank (130) can be directly connected, and accordingly, not only can the time delay and complicated procedure for charging or replenishing the negative electrode material to the metal electrode (121) be minimized, but also, even while the negative electrode material is being charged or replenished to the metal electrode (121), the operation of the metal-air battery cell (120) can be continued without being substantially interrupted.

[0187] Accordingly, according to the present application, the amount of current generated in the metal-air battery cell (120) can be increased compared to before the negative electrode material is charged or replenished, and the maintenance efficiency of the metal-air battery cell (120) can be greatly improved.

[0188] In other words, according to the embodiment of the present application, the control unit (300) controls the injection intensity of the electrolyte through the electrolyte supply nozzles (230 to 232) to increase, thereby forming the collision jet inside the metal-air battery cell (120), and by the collision jet, the hydrogen bubbles are captured, the corrosion products are filtered, or the temperature is lowered, thereby increasing the amount of current generated from the metal-air battery cell (120). Meanwhile, if the amount of current generated from the metal-air battery cell (120) does not increase despite the formation of the collision jet by increasing the injection intensity, the control unit (300) can control the negative electrode material to be replenished to the metal electrode (121) through the negative electrode material refueling tank (130).

[0189] Due to this, the amount of current generated from the metal-air battery cell (120) can increase.

[0190]

[0191] FIG. 3 is a drawing for explaining an operating method of a metal-air battery system according to a first embodiment of the present application.

[0192] Referring to FIG. 3, the current intensity of the metal-air battery unit (100) including the metal-air battery cell (120) in which the metal electrode (121) and the air electrode (122) are arranged facing each other can be measured by the control of the control unit (300) (S110).

[0193] Continuing, referring to FIG. 3, when the current intensity is less than the set standard (S120), the intensity of the injection of the electrolyte onto the surface of the metal electrode (121) or the air electrode (122) can be increased through the electrolyte supply nozzle (230-232) of the electrolyte supply unit (200) that supplies the electrolyte between the metal electrode (121) and the air electrode (122) by the control of the control unit (300) (S130).

[0194] Accordingly, by the flow of the electrolyte with increased injection strength, a collision jet may be formed inside the metal-air battery cell (120). By the collision jet according to the flow of the electrolyte, the hydrogen bubbles and / or the corrosion products may be desorbed from the surface of the metal electrode (121) and / or the air electrode (122). In addition, by the collision jet according to the flow of the electrolyte, heat energy generated due to a chemical reaction occurring between the metal electrode (121) and the air electrode (122) may be effectively removed, and the temperature of the metal-air battery cell (120) may be lowered.

[0195] Due to this, the amount of current generated in the metal-air battery unit (100) can increase.

[0196] Continuing with reference to FIG. 3, when the injection intensity increases but the amount of current generated in the metal-air battery unit (100) does not increase (S140), the supply of the electrolyte to the metal-air battery unit (100) may be stopped (S150) under the control of the control unit (300). More specifically, the control unit (300) may control the valve disposed between the electrolyte reservoir tank (210) and the metal-air battery stack cell (110) in the electrolyte supply line (280) to be locked.

[0197] Due to this, the supply of the electrolyte to the metal-air battery unit (100) may be interrupted.

[0198] Continuing with reference to FIG. 3, under the control of the control unit (300), the negative electrode material can be replenished to the metal electrode (121) (S160). More specifically, the control unit (300) can control the opening of a valve located between the negative electrode material refueling tank (130) and the metal-air battery stack cell (110) in the electrolyte supply line (280).

[0199] Accordingly, the negative electrode material of the negative electrode material refueling tank (130) can be provided to the metal electrode (121). In other words, according to the embodiment of the present application, the negative electrode material stored or kept in the negative electrode material refueling tank (130) can be quickly and easily charged or replenished to the metal electrode (121).

[0200] Accordingly, according to the present application, the negative electrode material stored or kept in the negative electrode material fuel tank (130) can be easily and quickly charged or replenished to the metal electrode (121), so that the operation of the metal-air battery cell (120) is substantially not interrupted, and the energy source of the metal-air battery cell (120) can be quickly charged or replenished.

[0201] In other words, according to the present application, the metal electrode (121) and the negative electrode material tank (130) can be directly connected, and accordingly, not only can the time delay and complicated procedure for charging or replenishing the negative electrode material to the metal electrode (121) be minimized, but also, even while the negative electrode material is being charged or replenished to the metal electrode (121), the operation of the metal-air battery cell (120) can be continued without being substantially interrupted.

[0202] Accordingly, according to the present application, the amount of current generated in the metal-air battery cell (120) can be increased compared to before the negative electrode material is charged or replenished, and the maintenance efficiency of the metal-air battery cell (120) can be greatly improved.

[0203]

[0204] FIG. 4 is a drawing for explaining a metal-air battery cell according to a first embodiment of the present application.

[0205] Referring to FIG. 4, the metal-air battery cell (120) can produce electricity by electrochemically reacting metal and air.

[0206] According to one embodiment, the metal-air battery cell (120) may include the metal electrode (121) and the air electrode (122), and a separator (123) between the metal electrode (121) and the air electrode (122).

[0207] According to one embodiment, the metal electrode (121) can release metal ions during discharge and accept metal ions during charging. The metal electrode (121) may include, for example, zinc metal as a negative electrode active material. More specifically, for example, the metal electrode (121) may include, as a negative electrode active material, zinc metal in a plate shape, powder shape, or granule shape. However, the present invention is not limited thereto.

[0208] According to one embodiment, the metal electrode (121) may further include a negative electrode current collector. The negative electrode current collector collects the current of the negative electrode and may be made of any material having electrical conductivity, without limitation. For example, the negative electrode current collector may include one or more selected from the group consisting of carbon, stainless steel, nickel, aluminum, iron, and titanium. More specifically, for example, the negative electrode current collector may be a carbon-coated aluminum current collector. The carbon-coated aluminum current collector may have superior adhesion to an active material, lower contact resistance, and superior corrosion resistance to polysulfide, compared to a current collector not coated with carbon. The negative electrode current collector may be provided in various forms, such as a film, a sheet, a foil, a net, a porous body, a foam, or a non-woven fabric.

[0209] According to one embodiment, the air electrode (122) is positioned facing the metal electrode (121) and can use oxygen as a positive electrode active material. The air electrode (122) can reduce oxygen during discharge and release oxygen during charging.

[0210] According to one embodiment, the air electrode (122) may include a conductive material. For example, the air electrode (122) may include a porous carbon material. The porous carbon material may include, for example, one or more selected from the group consisting of graphene, graphite, carbon black, carbon nanotubes, carbon fibers, and activated carbon. The carbon black may be acetylene black, Denka black, Ketjen black, or carbon black.

[0211] According to one embodiment, the air electrode (122) may further include an oxygen reduction catalyst. More specifically, since the air electrode (122) uses oxygen as a positive electrode active material, it may include an oxygen reduction catalyst capable of promoting an oxygen reaction. The oxygen reduction catalyst may include one or more selected from the group consisting of noble metals, non-metals, metal oxides, and organic metal complexes, but is not limited thereto. The noble metal may include, for example, one or more selected from the group consisting of platinum (Pt), gold (Au), and silver (Ag); the non-metal may include, for example, one or more selected from the group consisting of boron (B), nitrogen (N), and sulfur (S); the metal oxide may include, for example, one or more selected from the group consisting of manganese (Mn), nickel (Ni), and cobalt (Co); and the organometallic complex may include, for example, one or more selected from the group consisting of metal porphyrins and metal phthalocyanines. However, the present invention is not limited thereto.

[0212] According to one embodiment, the air electrode (122) may optionally further include, in addition to the catalyst, one or more of a binder, a conductive material, and a solvent to improve the adhesion of the positive electrode active material to the air electrode (122). The conductive material may not be particularly limited as long as it has electrical conductivity and does not cause a chemical change in the metal-air battery cell (120). For example, the conductive material may be a carbon material, an electrically conductive polymer, a conductive fiber, or a metal powder, either singly or in combination. The carbon material may not be limited as long as it includes a porous structure or is a material with a high specific surface area. For example, the carbon material may include one or more selected from the group consisting of mesoporous carbon, graphite, carbon black, carbon nanotubes, carbon fibers, fullerenes, and activated carbon. The conductive fiber may be, for example, carbon fiber or metal fiber, the metal powder may be, for example, fluorocarbon, aluminum, or nickel powder, and the conductive polymer may be, for example, polyaniline, polythiophene, polyacetylene, or polypyrrole. However, the present invention is not limited thereto. The binder may include, for example, one or more selected from the group consisting of poly(vinyl acetate), polyvinyl alcohol, polyethylene oxide, polyvinyl pyrrolidone, alkylated polyethylene oxide, cross-linked polyethylene oxide, polyvinyl ether, poly(methyl methacrylate), polyvinylidene fluoride, copolymers of polyhexafluoropropylene and polyvinylidene fluoride, poly(ethyl acrylate), polytetrafluoroethylene, polyvinyl chloride, polyacrylonitrile, polyvinylpyridine, polystyrene, derivatives, blends, and copolymers thereof.

[0213] According to one embodiment, the air electrode (122) may further include a positive electrode current collector. The positive electrode current collector collects the positive electrode current and may be made of any material having electrical conductivity, without limitation. For example, the positive electrode current collector may include one or more selected from the group consisting of carbon, stainless steel, nickel, aluminum, iron, copper, and titanium. More specifically, for example, the positive electrode current collector may be a carbon-coated aluminum current collector. The carbon-coated aluminum current collector may have superior adhesion to an active material, lower contact resistance, and superior corrosion resistance against polysulfide, compared to a current collector not coated with carbon. The positive electrode current collector may be provided in various forms, such as a film, a sheet, a foil, a net, a porous body, a foam, or a non-woven fabric.

[0214] According to one embodiment, the separator (123) may separate the space between the metal electrode (121) and the air electrode (122) and enable ion transport between the metal electrode (121) and the air electrode (122). The separator (123) may not be limited as long as it is a material that allows ions to pass through but blocks substances other than the ions. For example, the separator (123) may be a porous non-conductive or insulating material. More specifically, for example, the separator (123) may be a polymer non-woven fabric such as a non-woven fabric of a polypropylene material or a non-woven fabric of a polyphenylene sulfide material, a porous film of an olefin resin such as polyethylene or polypropylene, or a film in which two or more of these are used in combination. However, the present invention is not limited thereto, and the separator (123) may be provided as an independent member such as a film.

[0215]

[0216] FIG. 5 is a drawing for explaining an electrolyte supply unit and an electrolyte supply nozzle according to the first embodiment of the present application.

[0217] According to one embodiment, the electrolyte supply unit (200) may provide electrolyte to the metal-air battery cell (120), control the temperature of the electrolyte discharged from the metal-air battery cell (120), and provide it back to the metal-air battery cell (120).

[0218] According to one embodiment, the electrolyte may be an aqueous electrolyte or a non-aqueous electrolyte. The aqueous electrolyte may include, for example, water, and the non-aqueous electrolyte may include, for example, a non-aqueous organic solvent selected from the group consisting of carbonate-based, ester-based, ether-based, ketone-based, organosulfur-based, organophosphorous-based, aprotic solvents, and combinations thereof.The above non-aqueous organic solvents are ethylene carbonate (EC), propylene carbonate (PC), butylene carbonate (BC), dimethyl carbonate (DMC), diethyl carbonate (DEC), dipropyl carbonate (DPC), dibutyl carbonate (DBC), ethyl methyl carbonate (EMC), methyl propyl carbonate (MPC), ethyl propyl carbonate (EPC), fluoroethylene carbonate (FEC), dibutyl ether, tetraglyme, diglyme, dimethoxyethane, tetrahydrofuran, 2-methyl tetrahydrofuran, 1,3-dioxolane, 1,4-dioxane, 1,2-dimethoxyethane, 1,2-diethoxyethane, 1,2-dibuoxyethane, acetonitrile, dimethylformamide, methyl formate, ethyl formate, propyl formate, Butyl formate, methyl acetate, ethyl acetate, propyl acetate, butyl acetate, methyl propionate, ethyl propionate, propyl propionate, butyl propionate, methyl butyrate, ethyl butyrate, propyl butyrate, butyl butyrate, γ-butyrolactone, 2-methyl-γ-butyrolactone, 3-methyl-γ-butyrolactone, 4-methyl-γ-butyrolactone, β-propiolactone, δ-valerolactone, trimethyl phosphate, triethyl phosphate, tris(2-chloroethyl) phosphate, tris(2,2,2-trifluoroethyl) phosphate, tripropyl phosphate, triisopropyl phosphate, tributyl phosphate, trihexyl phosphate, triphenyl phosphate, tritolyl phosphate, It may include a group selected from the group consisting of polyethylene glycol dimethyl ether (PEGDME), and combinations thereof.

[0219] Referring to FIG. 4, the electrolyte supply nozzles (230, 231, 232) may have a predetermined length so as to be arranged adjacent to the metal electrode (121) and the air electrode (122) inside the metal-air battery cell (120). More specifically, the electrolyte supply nozzles (230, 231, 232) may include a nozzle body (230) that is connected to the electrolyte supply line (280) and extends toward the metal-air battery cell (120), and a first nozzle (231) and a second nozzle (232) that are each extended by a predetermined length from the nozzle body (230) so as to be arranged adjacent to the metal electrode (121) and the air electrode (122) inside the metal-air battery cell (120), respectively. In an embodiment of the present application, the predetermined length may be defined as a length corresponding to the cross-sectional area of ​​the metal electrode (121) and the air electrode (122). For example, when the cross-sectional area of ​​the metal electrode (121) and the air electrode (122) is deformed, the predetermined length of the first nozzle (231) and the second nozzle (232) may be deformed to a length corresponding to the deformed cross-sectional area.

[0220] According to one embodiment, the first nozzle (231) disposed adjacent to the metal electrode (121) can discharge the electrolyte toward the metal electrode (121), and the second nozzle (232) disposed adjacent to the air electrode (122) can discharge the electrolyte toward the air electrode (122). The first nozzle (231) is provided along a path between the metal electrode (121) and the separator (123) at the top of the metal-air battery cell (120), and can discharge the electrolyte toward the metal electrode (121).

[0221] According to an embodiment with reference to FIG. 5, the first nozzle (231) may include a first region (231_1), a second region (231_2), a third region (231_3), and a fourth region (231_4). The first nozzle (231) may include, for example, the first to fourth regions (231_1 to 231_4) in a parallel connection, a series connection, and / or a mixed form of parallel and series connection. The first region (231_1) may have a predetermined length and may include a plurality of discharge ports (231_1a, 231_1b, ...). The second region (231_2) may have a predetermined length, may be provided in parallel with the first region (231_1), and may include a plurality of discharge ports (231_2a, 231_2b, ...). The third region (231_3) may have a predetermined length, may be provided in parallel with the second region (231_2), and may include a plurality of discharge ports (231_3a, 231_3b, ...). The fourth region (231_4) may have a predetermined length, may be provided in parallel with the third region (231_3), and may include a plurality of discharge ports (231_4a, 231_4b, ...). Each of the discharge ports in the first to fourth regions (231_1 to 231_4) may have different cross-sectional shapes, diameters, spacings, and / or arrangements, and may discharge the electrolyte in a direction perpendicular to one surface of the metal electrode (121), in a direction obliquely inclined to one surface of the metal electrode (121), or in a direction obliquely inclined to one surface of the metal electrode (121).

[0222] According to one embodiment, the second nozzle (232) may be provided along a path between the air electrode (122) and the separator (123) and may discharge the electrolyte toward the air electrode (122). The second nozzle (232) may have the same structure as the first nozzle (231). More specifically, the second nozzle (232) may include a first region (232_1), a second region (232_2), a third region (232_3), and a fourth region (232_4). The second nozzle (232) may include the first region to the fourth region (232_1 to 232_4) in a form of, for example, parallel connection, series connection, and / or a mixture of parallel and series connection.

[0223] The first region (232_1) may have a predetermined length and may include a plurality of outlets (232_1a, 232_1b, ...). The second region (232_2) may have a predetermined length, may be provided in parallel with the first region (232_1), and may include a plurality of outlets (232_2a, 232_2b, ...). The third region (232_3) may have a predetermined length, may be provided in parallel with the second region (232_2), and may include a plurality of outlets (232_3a, 232_3b, ...). The fourth region (232_4) may have a predetermined length, may be provided in parallel with the third region (232_3), and may include a plurality of discharge ports (232_4a, 232_4b, ...). Each of the discharge ports of the first to fourth regions (232_1 to 232_4) may have different cross-sectional shapes, diameters, spacings, and / or arrangements, and may discharge the electrolyte in a direction perpendicular to one surface of the air electrode (122), in a direction obliquely inclined to one surface of the air electrode (122), or in a direction obliquely inclined to one surface of the air electrode (122).

[0224]

[0225] FIG. 6 is a drawing for explaining an electrolyte sprayed into a metal-air battery cell through an electrolyte supply nozzle according to the first embodiment of the present application.

[0226] Referring to FIG. 6, the electrolyte supply nozzles (230 to 232) can supply the electrolyte into the metal-air battery cell (120). More specifically, the first nozzle (231) is provided along a flow path between the metal electrode (121) and the separator (123) to discharge the electrolyte toward the metal electrode (121), and the second nozzle (232) is provided along a flow path between the air electrode (122) and the separator (123) to discharge the electrolyte toward the air electrode (122). The electrolyte discharged through the electrolyte supply nozzles (230 to 232) can form an impingement jet. The above-mentioned collision jet can desorb corrosion products and / or hydrogen bubbles generated on the surfaces of the metal electrode (121) and the air electrode (122), and increase the flow complexity of the electrolyte within the metal-air battery cell (120). Accordingly, the vortex and mixed flow of the electrolyte can be activated within the metal-air battery cell (120).

[0227] Due to this, the energy production efficiency of the metal-air battery cell (120) can be improved.

[0228]

[0229] FIG. 7 is a drawing for explaining an electrolyte supply nozzle according to the first and second embodiments of the present application.

[0230] According to one embodiment with reference to FIG. 7, a plurality of discharge ports (231_1a, 231_1b, ...) may be formed obliquely in the first region (231_1) of the first nozzle (231). In other words, the plurality of discharge ports (231_1a, 231_1b, ...) may have a predetermined angle obliquely with respect to the cross-section of the first region (231_1).

[0231] Accordingly, a plurality of the discharge ports (231_1a, 231_1b, ...) having a predetermined angle obliquely can discharge the electrolyte obliquely toward the surface of the metal electrode (121) where the corrosion product (bp) and the hydrogen bubbles (hb) are generated.

[0232] Due to this, a wide surface of the metal electrode (121) can be uniformly covered by the electrolyte discharged from a plurality of discharge ports (231_1a, 231_1b, ...) having a predetermined angle obliquely.

[0233]

[0234] FIG. 8 is a drawing for explaining an electrolyte supply nozzle according to the first to third embodiment of the present application.

[0235] According to another embodiment with reference to FIG. 8, a plurality of discharge ports (231_1a, 231_1b, ...) may be formed vertically in the first region (231_1) of the first nozzle (231). In other words, the plurality of discharge ports (231_1a, 231_1b, ...) may be perpendicular to the cross-section of the first region (231_1).

[0236] Accordingly, the plurality of vertical discharge ports (231_1a, 231_1b, ...) can vertically discharge the electrolyte toward the surface of the metal electrode (121) where the corrosion product (bp) and the hydrogen bubbles (hb) are generated.

[0237] Meanwhile, it can be seen that the plurality of the above discharge ports (231_1a, 231_1b, ...) cover a wider surface of the metal electrode (121) at an oblique angle as shown in FIG. 7 than at a vertical angle as shown in FIG. 8.

[0238]

[0239] FIG. 9 is a drawing for explaining an electrolyte supply nozzle according to various embodiments of the present application.

[0240] Referring to Fig. 9(A), the discharge ports (231_1a, 231_1b, 231_1c, ...) may be provided in a circular shape.

[0241] Also, referring to Fig. 9(B), the discharge ports (231_1a, 231_1b, 231_1c, ...) may be provided in a circular shape with a larger diameter than Fig. 9(A).

[0242] In addition, referring to Fig. 9(C), the discharge ports (231_1a, 231_1b, ...) may be provided in a circular shape with a larger diameter and wider spacing than Fig. 9(A).

[0243] Also, referring to FIG. 9(D), the discharge ports (231_1a, 231_1b, 231_1c, ...) may be provided in a square shape.

[0244] Also, referring to Fig. 9(E), the discharge ports (231_1a, 231_1b, ...) may be provided in a rectangular shape with a larger cross-sectional area than Fig. 9(D).

[0245] Through FIG. 9, it can be confirmed that, according to various embodiments of the present application, the discharge ports (231_1a, 231_1b, 231_1c, ...) of the electrolyte supply nozzles (230 to 232) have various cross-sectional shapes and arrangement intervals.

[0246]

[0247] FIG. 10 is a drawing for explaining an electrolyte supply nozzle according to the first to fourth embodiments of the present application.

[0248] Referring to FIG. 10, the discharge ports (231_1a, 231_1b, 231_1c, ...) of the electrolyte supply nozzles (230 to 232) can be arranged to form various angles with the cross-section of the metal electrode (121).

[0249] Due to this, a wide surface of the metal electrode (121) can be uniformly covered by the electrolyte discharged from a plurality of discharge ports (231_1a, 231_1b, ...) having various angles.

[0250] In other words, according to the embodiment of the present application, through the geometric shape and various configurations of the discharge ports (231_1a, 231_1b, ...), the circulation flow of the electrolyte inside the metal-air battery cell (120) can be made more active, and accordingly, the energy production efficiency of the metal-air battery cell (120) can be improved.

[0251]

[0252] FIG. 11 is a drawing for explaining an electrolyte sprayed into a metal-air battery cell through an electrolyte supply nozzle according to the first to fifth embodiment of the present application.

[0253] According to another embodiment of the present application with reference to FIG. 11, the first nozzle (231) may extend a predetermined length along a path between the metal electrode (121) and the separator (123) at the bottom of the metal-air battery cell (120), and the second nozzle (232) may extend a predetermined length along a path between the air electrode (122) and the separator (123) at the bottom of the metal-air battery cell (120).

[0254]

[0255] FIG. 12 is a drawing for explaining an electrolyte supply nozzle according to the first to sixth embodiment of the present application.

[0256] According to another embodiment of the present application with reference to FIG. 12, it can be confirmed that the first to fourth regions (231_1 to 231_4) of the first nozzle (231) are connected in series in the horizontal direction.

[0257]

[0258] FIG. 13 is a drawing for explaining an electrolyte supply nozzle according to the first to seventh embodiment of the present application.

[0259] According to another embodiment of the present application with reference to FIG. 13, it can be confirmed that the first to fourth regions (231_1 to 231_4) of the first nozzle (231) are connected in series in the vertical direction.

[0260]

[0261] FIG. 14 is a drawing for explaining an electrolyte supply nozzle according to the first to eighth embodiment of the present application.

[0262] According to another embodiment of the present application with reference to FIG. 14, it can be confirmed that the first region (231_1) and the second region (231_2) of the first nozzle (231) are connected in series, and the third region (231_3) and the fourth region (231_4) are connected in series.

[0263] In addition, it can be confirmed that the first region (231_1) and the second region (231_2) connected in series, and the third region (231_3) and the fourth region (231_4) connected in series are connected in parallel.

[0264]

[0265] FIG. 15 is a drawing for explaining an electrolyte supply nozzle according to the first to ninth embodiment of the present application.

[0266] According to another embodiment of the present application with reference to FIG. 15, it can be confirmed that the first nozzle (231) includes a pair of nozzles (231_1, 231_2) that are symmetrical about the center of the metal electrode (121), and the pair of nozzles (231_1, 231_2) include a plurality of branch regions (231_1a, 231_1b, ..., 231_2a, 231_2b, ...).

[0267]

[0268] FIG. 16 is a drawing for explaining an electrolyte supply nozzle according to the first to tenth embodiment of the present application.

[0269] According to another embodiment of the present application with reference to FIG. 16, the first nozzle (231) includes a pair of nozzles (231_1, 231_2) that are symmetrical about the center of the metal electrode (121), and the pair of nozzles (231_1, 231_2) include a first-first region (231_1a) and a first-second region (231_1b), and a second-first region (231_2a) and a second-second region (231_2b), respectively, wherein the first-first region (231_1a) and the first-second region (231_1b) are connected in series, and the second-first region (231_2a) and the second-second region (231_2b) are connected in series.

[0270]

[0271] FIG. 17 is a drawing for explaining an electrolyte sprayed into a metal-air battery cell through an electrolyte supply nozzle according to the first to eleventh embodiment of the present application.

[0272] According to another embodiment of the present application with reference to FIG. 17, the first nozzle (231) may extend a predetermined length along the path between the metal electrode (121) and the separator (123) from the upper portion of the metal-air battery cell (120), and the second nozzle (232) may extend a predetermined length along the path between the air electrode (122) and the separator (123) from the upper portion of the metal-air battery cell (120).

[0273]

[0274] FIG. 18 is a drawing for explaining an electrolyte sprayed into a metal-air battery cell through an electrolyte supply nozzle according to the first to twelfth embodiment of the present application.

[0275] According to another embodiment of the present application with reference to FIG. 18, the first nozzle (231) may extend a predetermined length along a path between the metal electrode (121) and the separator (123) at the bottom of the metal-air battery cell (120), and the second nozzle (232) may extend a predetermined length along a path between the air electrode (122) and the separator (123) at the bottom of the metal-air battery cell (120).

[0276]

[0277] Hereinafter, a second embodiment of the present application is described. The second embodiment of the present application may include embodiments 2-1 to 2-4 described below.

[0278] FIG. 19 is a schematic diagram illustrating a metal-air battery device according to the second embodiment of the present invention, FIG. 20 is an enlarged view of a main part of FIG. 19, and FIG. 21 is an enlarged view of part A of FIG. 20.

[0279] Referring to FIGS. 19 to 21, a metal-air battery device (1) according to the second embodiment of the present invention includes a metal-air battery cell (10) and an electrolyte supply unit (20).

[0280] A metal-air battery cell (10) can generate electricity by electrochemically reacting a metal electrode (11) and an air electrode (12). A plurality of metal-air battery cells (10) may be provided, and each metal-air battery cell (10) may include a metal electrode (11), an air electrode (12), and a separator (13).

[0281] The electrolyte supply unit (20) supplies electrolyte (E) to the metal-air battery cell (10), controls the temperature of the electrolyte (E) discharged from the metal-air battery cell (10), and supplies it back to the metal-air battery cell (10). The electrolyte supply unit (20) includes an electrolyte supply nozzle (22) and a manifold (23). The electrolyte supply unit (20) may further include a cell distribution supply line (21), an electrolyte supply line (24), a pump (26), and a heat exchanger (27).

[0282] The cell distribution supply line (21) can form a supply path by distributing the electrolyte (E) flowing in from the electrolyte supply line (24) to a plurality of metal-air battery cells (10). The cell distribution supply line (21) can be formed to extend along the arrangement direction of the metal-air battery cells (10), and can supply the electrolyte (E) to the plurality of metal-air battery cells (10) through a plurality of manifolds (23).

[0283] The electrolyte supply nozzle (22) discharges the electrolyte (E) into the interior of the metal-air battery cell (10). The electrolyte supply nozzle (22) discharges the electrolyte (E) to at least one of the metal electrode (11) and the air electrode (12). The electrolyte supply nozzle (22) may be formed with a discharge port (D) for discharging the electrolyte (E). A plurality of discharge ports (D) may be arranged along the extension direction of the electrolyte supply nozzle (22). A pair of electrolyte supply nozzles (22) may be provided for discharging the electrolyte (E) toward each of the metal electrode (11) and the air electrode (12) for one metal-air battery cell (10).

[0284] The manifold (23) can supply the electrolyte (E) supplied from the cell distribution supply line (21) by evenly distributing and dispersing it to a plurality of electrolyte supply nozzles (22). One manifold (23) can supply the electrolyte (E) by evenly distributing and dispersing it to a plurality of first supply nozzles (22A). One manifold (23) can supply the electrolyte (E) by evenly distributing and dispersing it to a plurality of second supply nozzles (22B).

[0285] The electrolyte supply line (24) can supply and circulate the electrolyte (E) discharged from the metal-air battery cell (10) back to the metal-air battery cell (10). The electrolyte supply line (24) is connected to the cell distribution supply line (21) and can supply the electrolyte (E) to a plurality of metal-air battery cells (10).

[0286] A tank (220) can store electrolyte discharged from a metal-air battery cell (10). A pump (230) is installed on an electrolyte supply line (24) and can control the flow rate of the electrolyte stored in the tank (220) supplied to a heat exchanger (240) by applying pressure to the inside of the electrolyte supply line (24). The heat exchanger (240) can control the temperature of the electrolyte circulating along the electrolyte supply line (24).

[0287] The electrolyte supplied to the metal-air battery cell (10) is discharged from the metal-air battery cell (10) and stored in a tank (220) through an electrolyte supply line (24), and the electrolyte stored in the tank (220) can be supplied to a heat exchanger (240) and its flow rate can be controlled by applying pressure to a pump (230) installed in the electrolyte supply line (24). At this time, the pump (230) can change the flow rate of the electrolyte in the metal-air battery cell (10) by controlling the flow rate of the electrolyte.

[0288] The temperature of the electrolyte increased in the metal-air battery cell (10) can be lowered in the heat exchanger (240). When the electrolyte reaches a preset temperature, it can be supplied back to the metal-air battery cell (10) through the electrolyte supply line (24), and through this cycle of circulating the electrolyte, temperature uniformity can be improved and the desired cooling performance can be achieved.

[0289] The electrolyte supply nozzle (22) may be provided with a first supply nozzle (22A) for discharging the electrolyte (E) toward the metal electrode (11) and a second supply nozzle (22B) for discharging the electrolyte (E) toward the air electrode (12), for one metal-air battery cell (10). The first supply nozzle (22A) may be arranged between the metal electrode (110) and the separator (130), and the second supply nozzle (22B) may be arranged between the air electrode (120) and the separator (130).

[0290] The first supply nozzle (22A) may be positioned between the metal electrode (110) and the separator (130), and may be positioned facing the metal electrode (11). The second supply nozzle (22B) may be positioned between the air electrode (12) and the separator (130), and may be positioned facing the air electrode (12).

[0291] When the first supply nozzle (22A) and the second supply nozzle (22B) supply the electrolyte (E) between the metal electrode (110) and the separator (130) and between the air electrode (120) and the separator (130), respectively, a vortex and mixed flow of the electrolyte (E) as shown in FIG. 21 may occur inside the metal-air battery cell (100).

[0292] The electrolyte (E) discharged from the electrolyte supply nozzle (22) is sprayed onto the surface of the metal electrode (110) and the air electrode (120) and collides with them to generate an array collision jet, thereby removing corrosion products and hydrogen bubbles generated on the surface of the metal electrode (110) and the air electrode (120). In addition, the collision jet flow generated by the array collision jet increases the flow complexity of the electrolyte within the metal-air battery cell (10), thereby activating the vortex and mixing flow of the electrolyte, thereby improving the energy production efficiency of the battery.

[0293] The metal electrode (11) releases metal ions during discharge and accepts metal ions during charging. The metal electrode (11) may include zinc metal as a negative active material. The zinc metal may be in the form of a plate, powder, or granule. The air electrode (12) is positioned opposite the metal electrode (11) and uses oxygen as a positive active material. The air electrode (12) reduces oxygen during discharge and releases oxygen during charging.

[0294] The metal electrode (11) may further include a negative electrode current collector. The negative electrode current collector collects the current of the negative electrode and may be any material having electrical conductivity. For example, one or more materials selected from the group consisting of carbon, stainless steel, nickel, aluminum, iron, and titanium may be used. More specifically, a carbon-coated aluminum current collector may be used. Using a carbon-coated aluminum substrate has superior adhesion to the active material, lower contact resistance, and can prevent corrosion by aluminum polysulfide compared to a non-carbon-coated substrate. The negative electrode current collector may have various forms such as a film, a sheet, a foil, a net, a porous body, a foam, or a non-woven fabric.

[0295] The air electrode (12) may include a conductive material. For example, it may include a porous carbon material. The porous carbon material may be one or more selected from the group consisting of graphene, graphite, carbon black, carbon nanotubes, carbon fibers, and activated carbon. The carbon black may be acetylene black, Denka black, Ketjen black, or carbon black.

[0296] The air electrode (12) may further include an oxygen reduction catalyst. Since the air electrode (12) uses oxygen as a positive electrode active material, it may include an oxygen reduction catalyst capable of promoting an oxygen reaction. The oxygen reduction catalyst may be one or more selected from the group consisting of noble metals, non-metals, metal oxides, and organometallic complexes, but is not limited thereto. The noble metal may be one or more selected from the group consisting of platinum (Pt), gold (Au), and silver (Ag), the non-metal may be one or more selected from the group consisting of boron (B), nitrogen (N), and sulfur (S), the metal oxide may be one or more selected from the group consisting of manganese (Mn), nickel (Ni), and cobalt (Co), and the organometallic complex may be one or more selected from the group consisting of metal porphyrins and metal phthalocyanines.

[0297] In addition to the catalyst, the air electrode (12) may further include one or more of a binder and a solvent for attaching the positive electrode active material well to the air electrode (12), optionally together with a conductive material.

[0298] The conductive material is not particularly limited as long as it has electrical conductivity without causing a chemical change in the battery, but for example, carbon materials, electrically conductive polymers, conductive fibers, or metal powders can be used alone or in combination. The carbon material may be any material with a porous structure or a high specific surface area, and for example, one or more selected from the group consisting of mesoporous carbon, graphite, carbon black, carbon nanotubes, carbon fibers, fullerenes, and activated carbon can be used. The conductive fiber can be carbon fiber or metal fiber, the metal powder can be fluorocarbon, aluminum, or nickel powder, and the conductive polymer can be polyaniline, polythiophene, polyacetylene, or polypyrrole.

[0299] As the binder, one or more selected from the group consisting of poly(vinyl acetate), polyvinyl alcohol, polyethylene oxide, polyvinylpyrrolidone, alkylated polyethylene oxide, cross-linked polyethylene oxide, polyvinyl ether, poly(methyl methacrylate), polyvinylidene fluoride, copolymers of polyhexafluoropropylene and polyvinylidene fluoride, poly(ethyl acrylate), polytetrafluoroethylene, polyvinyl chloride, polyacrylonitrile, polyvinylpyridine, polystyrene, derivatives, blends and copolymers thereof may be used.

[0300] In addition, the air electrode (12) may further include a positive electrode current collector. The positive electrode current collector may be any material having electrical conductivity that collects the positive electrode current. For example, one or more materials selected from the group consisting of carbon, stainless steel, nickel, aluminum, iron, copper, and titanium may be used. More specifically, a carbon-coated aluminum current collector may be used. Using a carbon-coated aluminum substrate has the advantages of superior adhesion to the active material, lower contact resistance, and prevention of corrosion by aluminum polysulfide compared to a non-carbon-coated substrate. The current collector may have various forms, such as a film, a sheet, a foil, a net, a porous body, a foam, or a non-woven fabric.

[0301] The separator (13) separates the space between the metal electrode (11) and the air electrode (12) from each other and enables ion transport between the metal electrode (11) and the air electrode (12). Any separator (13) that can pass only ions and block the rest can be used. The separator (13) may be made of a porous non-conductive or insulating material. Specifically, it may be provided as a polymer non-woven fabric such as a non-woven fabric made of polypropylene or a non-woven fabric made of polyphenylene sulfide, a porous film made of an olefin resin such as polyethylene or polypropylene, and two or more types of these may be used in combination. The separator (13) may be provided as an independent member such as a film.

[0302] The electrolyte (E) may be an aqueous electrolyte or a non-aqueous electrolyte. The aqueous electrolyte may include water, and the non-aqueous electrolyte may include a non-aqueous organic solvent selected from the group consisting of carbonate solvents, ester solvents, ether solvents, ketone solvents, organosulfur solvents, organophosphorous solvents, aprotic solvents, and combinations thereof.

[0303] Non-aqueous organic solvents include ethylene carbonate (EC), propylene carbonate (PC), butylene carbonate (BC), dimethyl carbonate (DMC), diethyl carbonate (DEC), dipropyl carbonate (DPC), dibutyl carbonate (DBC), ethyl methyl carbonate (EMC), methyl propyl carbonate (MPC), ethyl propyl carbonate (EPC), fluoroethylene carbonate (FEC), dibutyl ether, tetraglyme, diglyme, dimethoxyethane, tetrahydrofuran, 2-methyl tetrahydrofuran, 1,3-dioxolane, 1,4-dioxane, 1,2-dimethoxyethane, 1,2-diethoxyethane, 1,2-dibuoxyethane, acetonitrile, dimethylformamide, methyl formate, ethyl formate, propyl formate, Butyl formate, methyl acetate, ethyl acetate, propyl acetate, butyl acetate, methyl propionate, ethyl propionate, propyl propionate, butyl propionate, methyl butyrate, ethyl butyrate, propyl butyrate, butyl butyrate, y-butyrolactone, 2-methyl-y-butyrolactone, 3-methyl-8-butyrolactone, 4-methyl-8-butyrolactone, B-propiolactone, 8-valerolactone, trimethyl phosphate, triethyl phosphate, tris(2-chloroethyl) phosphate, tris(2,2,2-trifluoroethyl) phosphate, tripropyl phosphate, triisopropyl phosphate, tributyl phosphate, trihexyl phosphate, triphenyl phosphate, tritolyl phosphate, It may be selected from the group consisting of polyethylene glycol dimethyl ether (PEGDME) and combinations thereof.

[0304] FIG. 22 is a schematic diagram illustrating a manifold of a metal-air battery device according to the second embodiment of the present invention, and FIG. 23 expresses the position, shape, and arrangement relationship of components of the present invention based on the x, y, and z directions illustrated in FIGS. 22 and 23 for convenience of explanation. In addition, for convenience of explanation, the x direction is expressed as the left-right direction, the y direction as the up-down direction, and the z direction as the front-back direction based on the diagram in FIG. 22.

[0305] Referring to Fig. 22, the first supply nozzle (22A) may be positioned in the -y direction (lower side) of the manifold (23), and a plurality of nozzles may be arranged in the x direction (left-right direction). The first supply nozzle (22A) may be formed to extend from the upper side (+y direction) outside of the metal-air battery cell (10) to the inside of the metal-air battery cell (10), and may extend in the -y direction to a position close to the -y direction end (lower side) of the metal electrode (110).

[0306] Each of the plurality of first supply nozzles (22A) can be divided into a first region (221), a second region (222), a third region (223), a fourth region (224), a fifth region (225), a sixth region (226), and a seventh region (227), as shown in FIG. 22.

[0307] The first region (221) may be connected to one side of the manifold (23). The second region (222) may be arranged to be spaced apart from the first region (221) in the x-direction (left-right direction) at a set interval, and may be connected to the other side of the branch supply unit (232). The second region (222) may have an extension shape identical to or symmetrical to the first region (221) and may be arranged parallel to the first region (221). The third region (223) to the seventh region (227) may also be arranged to be spaced apart from each other at a set interval in the x-direction (left-right direction) similar to the arrangement relationship of the first region (221) and the second region (222).

[0308] The plurality of first supply nozzles (22A) including the first region (221) and the second region (222) may have a parallel connection, a series connection, or a mixed form and arrangement structure of parallel and series connections in addition to the parallel connection described above. In addition, the plurality of first supply nozzles (22A) including the first region (221) and the second region (222) may have different cross-sectional shapes, diameters, spacing between the nozzles, and arrangements.

[0309] In addition to being formed to discharge the electrolyte (E) in a direction obliquely inclined to one surface of the metal electrode (11), the discharge port (D) may be arranged to discharge the electrolyte in a vertical direction, and in addition to being arranged along the extension direction of the first supply nozzle (22A), a plurality of the discharge ports may be arranged along the circumferential direction of the first supply nozzle (22A) so as to discharge the electrolyte (E) at positions spaced apart from the first supply nozzle (22A) in the +x direction and -x direction. At this time, the first supply nozzle (22A) may have a circular cross-sectional shape, and the plurality of discharge ports (D) may discharge the electrolyte (E) in different directions. For example, one of the plurality of discharge ports (D) may discharge the electrolyte (E) in a direction inclined in the +x direction, and the other may discharge the electrolyte (E) in a direction inclined in the -x direction. The geometric shape and various configurations of these outlets (D) can more actively generate electrolyte circulation flow within the metal-air battery cell (10), thereby improving energy production efficiency.

[0310] The second supply nozzle (22B) may have the same extension shape or arrangement structure as the first supply nozzle (22A) as described above, or may have a shape or arrangement structure corresponding to the first supply nozzle (22A). In addition, the second supply nozzle (22B) may have a different extension shape or arrangement structure from the first supply nozzle (22A).

[0311] In addition, the first supply nozzle (22A) and the second supply nozzle (22B) may be arranged to face the metal electrode (110) and the air electrode (120) so that the electrolyte (E) is not directly sprayed onto the metal electrode (110) and the air electrode (120), but may be sprayed towards the space formed between the metal electrode (110) and the separator (130) and the space formed between the air electrode (120) and the separator (130), respectively. That is, the -y-direction ends of the first supply nozzle (22A) and the second supply nozzle (22B) may be positioned above the space formed between the metal electrode (110) and the separator (130) and above the space formed between the air electrode (120) and the separator (130).

[0312] Additionally, the electrolyte supply nozzle (22) may extend from the outside of the lower side (-y direction) of the metal-air battery cell (10) to the inside of the metal-air battery cell (10) and may have various y-direction lengths as described above.

[0313] The manifold (23) according to the present invention has a structure capable of uniformly supplying the electrolyte (E) to a plurality of electrolyte supply nozzles (22). The manifold (23) according to the present invention may include an electrolyte inlet portion (231), a branch supply portion (232), a distribution space portion (233), and a distribution member (234).

[0314] The electrolyte inlet (231) is a device part of the manifold (23) into which the electrolyte (E) is introduced, and is connected to the cell distribution supply line (21) to receive the electrolyte (E) from the cell distribution supply line (21). Referring to FIGS. 21 and 22, for one metal-air battery cell (10), a pair of electrolyte supply nozzles (22) corresponding to a first supply nozzle (22A) and a second supply nozzle (22B) may be provided, and a pair of electrolyte inlets (231) for supplying the electrolyte (E) to each of the first supply nozzle (22A) and the second supply nozzle (22B) may be provided.

[0315] The branch supply unit (232) is a device unit that discharges the electrolyte (E) from among the manifolds (23), and is connected to a plurality of electrolyte supply nozzles (22) to supply the electrolyte (E) to the plurality of electrolyte supply nozzles (22). One or more electrolyte inlets (231) may be provided, and may have a width (x direction) smaller than that of the branch supply unit (232).

[0316] The distribution space (233) is a device that forms a space (S) in which the electrolyte (E) introduced into the electrolyte inlet (231) can flow toward the branch supply unit (232), and is formed between the electrolyte inlet (231) and the branch supply unit (232).

[0317] The distribution member (234) is a device that distributes the electrolyte (E) introduced into the electrolyte inlet (231), is arranged on the distribution space (233), and has a guide surface (G) that guides the electrolyte (E) to be distributed toward a plurality of electrolyte supply nozzles (22). The distribution member (234) may be arranged to be spaced apart from the electrolyte inlet (231) and the branch supply member (232) in the y direction. Accordingly, a path through which the electrolyte (E) can pass may be formed between the distribution member (234), the electrolyte inlet (231), and the branch supply member (232).

[0318] The electrolyte inlet (231) can be arranged in the +y direction of the branch supply unit (232), and the electrolyte (E) can flow in the -y direction on the distribution space unit (233). A plurality of electrolyte supply nozzles (22) can be arranged in the x direction, and the distribution member (234) can have a guide surface (G) that guides the electrolyte (E) flowing in the -y direction to be distributed in the +x direction and the -x direction.

[0319] A plurality of electrolyte supply nozzles (22) are arranged in the x direction and can be positioned in the -y direction of the electrolyte inlet (231). The electrolyte (E) can flow in the -y direction in the space (S) of the distribution space (233) and be distributed in the +x direction and the -x direction by contacting the guide surface (G) of the distribution member (234).

[0320] Here, the guide surface (G) may be the upper surface (+y direction surface) of the distribution member (234) that naturally comes into contact with the electrolyte (E) flowing in the -y direction. In addition, the guide surface (G) may further include a side surface (+x direction surface, -x direction surface) of the distribution member (234) that naturally comes into contact with the electrolyte (E) guided along the upper surface (+y direction surface) of the distribution member (234).

[0321] Referring to Fig. 23, the z-direction ends of the distribution member (234) can be fixed to be in contact with both z-direction sides of the distribution space (233). The connection and fixation of the distribution member (234) can be stably performed based on the z-direction both sides of the distribution space (233), and a part of the electrolyte (E) can be prevented from flowing in the -z direction or +z direction further than the distribution member (234) and not coming into contact with the distribution member (234), thereby improving the reliability of the electrolyte (E) flow distribution.

[0322] FIG. 24 is a drawing schematically illustrating a second embodiment of a distribution space portion of a manifold of a metal-air battery device according to the present invention, FIG. 25 is a drawing schematically illustrating a second embodiment of a distribution space portion of a manifold of a metal-air battery device according to the present invention, FIG. 26 is a drawing schematically illustrating a second embodiment of a distribution space portion of a manifold of a metal-air battery device according to the present invention, and FIG. 27 is a drawing schematically illustrating a second embodiment of a distribution space portion of a manifold of a metal-air battery device according to the present invention.

[0323] Referring to FIGS. 24 to 27, the distribution space (233) may have a width that expands from the electrolyte inlet (231) toward the branch supply unit (232). The flow of the electrolyte (E) flowing in the -y direction inside the distribution space (233) in the +x and -x directions can be stably achieved without interference with the first side (S1) and the second side (S2).

[0324] The first side (S1) and the second side (S2) in the x-direction of the distribution space (233) can be formed to be inclined in any one of a straight line (see FIG. 24), a curved line (see FIGS. 25 and 26), and a stepped shape (see FIG. 27). The distribution space (233) can have any one of a triangular shape (see FIG. 24), a trumpet shape (see FIG. 25), a semicircular shape (see FIG. 26), a semi-elliptical shape (see FIG. 26), and a stepped shape (see FIG. 27). The first side (S1) and the second side (S2) in the x-direction of the distribution space (233) are not limited to a specific structure and shape as long as they do not impede the dispersion flow of the electrolyte (E) as described above, and may have other shapes.

[0325] FIG. 28 is a schematic drawing of a distribution member of a manifold of a metal-air battery device according to the second embodiment of the present invention.

[0326] Referring to Fig. 28, the distribution member (234) according to the second embodiment of the present invention may have a first shape (234A) including a first extension portion (235), a second extension portion (236), and a third extension portion (237). The first shape (234A) may be referred to interchangeably as an inclined shape or a branched shape.

[0327] The first extension portion (235) may be formed to extend in the +x direction so as to guide the electrolyte (E) in the +x direction. The second extension portion (236) may be formed to extend in the -x direction so as to guide the electrolyte (E) in the -x direction. The third extension portion (237) may be formed between the first extension portion (235) and the second extension portion (236) and may be formed to extend in the +y direction.

[0328] The first extension portion (235) is formed to extend in the +x direction, but may be formed to be inclined in the -y direction toward the electrolyte supply nozzle (22) located in the +x direction and the -y direction. The second extension portion (236) is formed to extend in the -x direction, but may be formed to be inclined in the -y direction toward the electrolyte supply nozzle (22) located in the -x direction and the -y direction.

[0329] The electrolyte (E) flows in the -y direction, and then comes into contact with the upper end of the third extension (237), is divided into two, and then comes into contact with the +x direction side (guide surface (G)) and the -x direction side (guide surface (G)) of the third extension (237), and flows downward (in the -y direction) along it, and is naturally guided to the first extension (235) and the second extension (236) below it, and can have a +x direction component and a -x direction component while flowing along the upper surface (guide surface (G)) of the first extension (235) and the second extension (236). According to the first form (234A), a flow form of the electrolyte (E) that branches and flows obliquely in the +x×-y direction and the -x×-y direction can be implemented.

[0330] The electrolyte (E) flowing in the -y direction and coming into contact with the upper surface of the first extension portion (235) is blocked by the third extension portion (237) and cannot flow toward the second extension portion (236) (-x direction) and can only flow in the +x×-y direction. The electrolyte (E) flowing in the -y direction and coming into contact with the upper surface of the second extension portion (236) is blocked by the third extension portion (237) and cannot flow toward the first extension portion (235) (+x direction) and can only flow in the -x×-y direction. According to the first form (234A), by determining and limiting the flow direction according to the arrival position of the electrolyte (E), it is possible to implement a flow form of the electrolyte (E) that distributes and branches the electrolyte (E) in a desired form and flow rate.

[0331] The direction of the electrolyte (E) flow can be guided and determined while flowing along the inclined guide surfaces (G) of the first extension portion (235) and the second extension portion (236). The electrolyte (E) separated from the +x-direction end of the first extension portion (235) and the electrolyte (E) separated from the -x-direction end of the second extension portion (236) can be induced to flow along the extension lines of the inclined guide surfaces (G) of the first extension portion (235) and the second extension portion (236). The first extension portion (235) and the second extension portion (236) can induce the flow of the electrolyte (E) along the extension lines of the guide surfaces (G).

[0332] According to the first form (234A), the flow of the electrolyte (E) can be guided to the target position according to the length, inclination angle, position, etc. of the first extension portion (235) and the second extension portion (236). According to the first form (234A), the arrival position of the electrolyte (E) can be adjusted by adjusting the length, inclination angle, position, etc. of the first extension portion (235) and the second extension portion (236). According to the first form (234A), by determining and limiting the arrival position of the electrolyte (E) in this way, the flow form of the electrolyte (E) that distributes and branches the electrolyte (E) in the target form and flow rate can be implemented.

[0333] Each of the first extension portion (235), the second extension portion (236), and the third extension portion (237) may have a straight shape. That is, each of the guide surfaces (G) of the first extension portion (235), the second extension portion (236), and the third extension portion (237) may have a flat shape. Each of the first extension portion (235), the second extension portion (236), and the third extension portion (237) may have a curved shape. That is, each of the guide surfaces (G) of the first extension portion (235), the second extension portion (236), and the third extension portion (237) may have a curved shape.

[0334] FIG. 29 is a schematic diagram showing the electrolyte flow in a manifold of a metal-air battery device according to the second embodiment of the present invention.

[0335] Referring to FIG. 22, FIG. 28, and FIG. 29, a plurality of distribution members (234) are arranged to be spaced apart from each other, and a passage through which the electrolyte (E) can flow in the x-direction and y-direction can be formed between the distribution members (234). After the electrolyte (E) comes into contact with the guide surface (G) of the distribution member (234), the electrolyte (E) can be guided to have a directionality in the x-direction by the guide surface (G).

[0336] A plurality of distribution members (234) may be arranged to form one or more columns. One column may be formed by one distribution member (234), or a plurality of distribution members (234) may be arranged in the x-direction. The plurality of distribution members (234) may be arranged to form a plurality of columns including a first column (R1), a second column (R2), and a third column (R3).

[0337] The first row (R1) may be formed by one distribution member (234) or by arranging a plurality of distribution members (234) in the x direction. The second row (R2) may be formed by arranging in the -y direction of the first row (R1) and by arranging in the x direction a greater number of distribution members (234) than in the first row (R1). The third row (R3) may be formed by arranging in the -y direction of the second row (R2) and by arranging in the x direction a greater number of distribution members (234) than in the second row (R2).

[0338] The number of distribution members (234) forming the second row (R2) is greater than that of the first row (R1), so that some of the plurality of distribution members (234) can be positioned in the +x direction of the first row (R1), and other parts of the plurality of distribution members (234) can be positioned in the -x direction of the first row (R1). When the first row (R1) is formed of a plurality of distribution members (234), other parts of the plurality of distribution members (234) of the second row (R2) can be positioned at a corresponding x-direction position between the distribution members (234) forming the first row (R1).

[0339] The electrolyte (E) introduced into the electrolyte inlet (231) passes through the distribution space (233) in the -y direction while sequentially passing through the distribution members (234) of the first row (R1), the second row (R2), and the third row (R3), and can be supplied to the electrolyte supply nozzle (22) through the branch supply member (232). The electrolyte (E) can be sequentially branched and distributed according to the number of electrolyte supply nozzles (22) while sequentially passing through the distribution members (234) of the first row (R1), the second row (R2), and the third row (R3).

[0340] Among the rows formed by the distribution member (234), the row arranged closest to the electrolyte supply nozzle (22) may be located in the -y direction most inside the distribution space (233). The distribution member (234) forming the row arranged closest to the electrolyte supply nozzle (22) may be the distribution member (234) that the electrolyte (E) comes into contact with last before flowing into the electrolyte supply nozzle (22).

[0341] The distribution members (234) that are arranged closest to the electrolyte supply nozzles (22) and form the row that is positioned most in the -y direction may each have a corresponding x-direction position between the electrolyte supply nozzles (22). Accordingly, the electrolyte (E) can be uniformly distributed and supplied to the plurality of electrolyte supply nozzles (22) behind the distribution members (234) after finally coming into contact with the distribution members (234) that form the row that is positioned most in the -y direction.

[0342] When the distribution members (234) have an arrangement of a first row (R1), a second row (R2), and a third row (R3), the third row (R3) may be arranged closest to the electrolyte supply nozzles (22) and positioned furthest in the -y direction. At this time, the distribution members (234) forming the third row (R3) may be respectively arranged between the electrolyte supply nozzles (22). When seven electrolyte supply nozzles (22) are arranged in the x direction, the number of distribution members (234) forming the third row (R3) may be six, which is one less than the number of electrolyte supply nozzles (22). The distribution members (234) forming the third row (R3) may be respectively arranged at six locations corresponding to the between the seven electrolyte supply nozzles (22).

[0343] When the distribution members (234) have an arrangement of a first row (R1), a second row (R2), and a third row (R3), the distribution members (234) forming the second row (R2) may be provided in a smaller number than the distribution members (234) forming the third row (R3), and may be arranged at an x-direction position corresponding to between the distribution members (234) forming the third row (R3). The distribution members (234) forming the first row (R1) may be provided in a smaller number than the distribution members (234) forming the second row (R2), and may be arranged at an x-direction position corresponding to between the distribution members (234) forming the second row (R2). The first row (R1) may be formed by one distribution member (234), or may be formed by two or more distribution members (234).

[0344] The electrolyte (E) can be distributed and supplied to a plurality of electrolyte supply nozzles (22) after sequentially passing through the first row (R1), the second row (R2), and the third row (R3). The electrolyte (E) can finally come into contact with a plurality of distribution members (234) forming the third row (R3), and then be distributed and supplied to a plurality of electrolyte supply nozzles (22) positioned in the +x direction and the -x direction of each of the distribution members (234) forming the third row (R3).

[0345] The electrolyte (E) may have a flow form in which the direction and path of the flow change in a zigzag shape while flowing in the -y direction and contacting the plurality of distribution members (234) as described above, and having a directionality in the +x direction and the -x direction, and branching into a plurality of parts. This flow form of the electrolyte (E) may be generated corresponding to each of the plurality of distribution members (234), and may be uniformly formed throughout the space (S) of the distribution space (233) in which the plurality of distribution members (234) are arranged. In addition, if necessary, the above-described flow form may be implemented in a part of the target position on the space (S) of the distribution space (233) depending on the number, arrangement, size, etc. of the distribution members (234).

[0346] A plurality of first forms (234A) may be arranged to form one or more rows. A plurality of first forms (234A) may be arranged to form a plurality of rows including a first row (R1), a second row (R2), and a third row (R3). The electrolyte (E) may be sequentially passed through the first row (R1), the second row (R2), and the third row (R3) and then distributed and supplied to a plurality of electrolyte supply nozzles (22). The electrolyte (E) may finally come into contact with the plurality of first forms (234A) forming the third row (R3), and then be distributed and supplied to a plurality of electrolyte supply nozzles (22) positioned in the +x direction and the -x direction of each of the first forms (234A) forming the third row (R3).

[0347] The electrolyte (E) may flow in the -y direction, come into contact with a plurality of first shapes (234A) as described above, and may have a directionality in the +x direction and the -x direction, and may have a flow form in which the flow direction and path are changed in a zigzag shape and branched into a plurality of shapes. This flow form of the electrolyte (E) may be generated to correspond to each of the plurality of first shapes (234A), and may be uniformly formed throughout the space (S) of the distribution space (233) in which the plurality of first shapes (234A) are arranged. In addition, if necessary, the above-described flow form may be implemented in a part of the target position on the space (S) of the distribution space (233) depending on the number, arrangement, size, etc. of the first shapes (234A).

[0348] FIG. 30 is a drawing schematically illustrating a manifold of a metal-air battery device according to the second embodiment of the present invention, FIG. 31 is a drawing schematically illustrating a distribution member of a manifold of a metal-air battery device according to the second embodiment of the present invention, and FIG. 32 is a drawing schematically illustrating an electrolyte flow of a manifold of a metal-air battery device according to the second embodiment of the present invention.

[0349] Referring to FIGS. 30 to 32, the distribution member (234) according to the second embodiment of the present invention may have a second shape (234B) formed to extend in the x direction. The second shape (234B) may be referred to interchangeably as a horizontal shape or a simple shape.

[0350] The second form (234B) may be formed to extend in the x direction with a flat upper surface (+y direction surface). The electrolyte (E) flowing in the -y direction may come into contact with the upper surface (+y direction surface) of the second form (234B). Therefore, the upper surface of the second form (234B) may become a guide surface (G) that induces the +x direction and -x direction flow of the electrolyte (E).

[0351] Since the second form (234B) is formed to extend in the x direction with a flat upper surface (+y direction surface), the electrolyte (E) can be distributed in the +x direction and the -x direction no matter where it reaches on the guide surface (G) as shown in (a), (b), and (c) of FIG. 31. No matter where the electrolyte (E) reaches on the guide surface (G) of the second form (234B), it can form flow components in the +x direction and the -x direction together.

[0352] Referring to (a) of FIG. 31, even if the electrolyte (E) reaches the first position (P1) located to the right (in the +x direction) of the middle portion of the x-direction width of the second form (234B), since the electrolyte (E) is dispersed in the +x direction and the -x direction by the collision force with the upper surface of the second form (234B), not only the flow component in the +x direction but also the flow component in the -x direction can be formed together. Referring to (b) of FIG. 31, even if the electrolyte (E) reaches the second position (P2) located to the left (in the -x direction) of the middle portion of the x-direction width of the second form (234B), since the electrolyte (E) is dispersed in the +x direction and the -x direction by the collision force with the upper surface of the second form (234B), not only the flow component in the -x direction but also the flow component in the +x direction can be formed together.

[0353] The first position (P1) may be located in the +x direction relative to the second position (P2). The second position (P2) may be located in the -x direction relative to the first position (P1). Referring to (c) of FIG. 31, when the electrolyte (E) reaches the first position (P1) and the second position (P2) of the second shape (234B) at the same time, the electrolyte (E) that has reached the first position (P1) may mainly form a +x direction flow component along the upper right surface of the second shape (234B), and the electrolyte (E) that has reached the second position (P2) may mainly form a -x direction flow component along the upper left surface of the second shape (234B).

[0354] According to the second form (234B), as described above, the electrolyte (E) can be dispersed and distributed in the +x direction and the -x direction regardless of the position on the guide surface (G), and can have both the +x direction and the -x direction flow components. Therefore, even if the flow rate, flow rate, hydraulic pressure, etc. of the electrolyte (E) supplied to the electrolyte inlet (231) during operation of the metal-air battery device (1) are varied, and the position at which the electrolyte (E) reaches the distribution member (234) is varied accordingly, the second form (234B) can stably form the +x direction and the -x direction flow components at all times. In addition, even if processing errors, installation errors, etc. occur, the second form (234B) can encompass them, so that the +x direction and the -x direction flow components can be stably formed.

[0355] The fact that the second form (234B) has a flat upper surface (+y-direction surface) means that the upper surface of the second form (234B) has an overall flat shape, and is not intended to be limited to a plane having no y-direction elements at all. The upper surface of the second form (234B) may have unevenness formed, and at least a portion of the upper surface of the second form (234B) may include a curved surface. When the second form (234B) is formed to extend in the x-direction, if the electrolyte (E) can be dispersed and flowed in the +x-direction and -x-direction, it may be formed to extend in a straight line, or it may be formed to extend in a curved shape.

[0356] Some of the plurality of distribution members (234) may have a first length (L1) in the x-direction, and other of the plurality of distribution members (234) may have a second length (L2) different from the first length (L1). The plurality of distribution members (234) may be arranged in one or more rows. The distribution members (234) of the first row (R1) may have a first length (L1), and the distribution members (234) of the second row (R2) may have a second length (L2).

[0357] Some of the plurality of second shapes (234B) may have a first length (L1) in the x-direction, and other some of the plurality of second shapes (234B) may have a second length (L2) different from the first length (L1).

[0358] A plurality of second shapes (234B) may be arranged to form a single column corresponding to the first column (R1). Any one of the plurality of second shapes (234B) forming a single column may have a first length (L1), and any other one may have a second length (L2). The plurality of second shapes (234B) may be arranged to form a plurality of columns including a first column (R1), a second column (R2), and a third column (R3). The plurality of second shapes (234B) forming the second column (R2) may have a first length (L1) in the x-direction, and the plurality of second shapes (234B) forming the third column (R3) may have a second length (L2) in the x-direction.

[0359] The electrolyte (E) can be distributed and supplied to a plurality of electrolyte supply nozzles (22) after sequentially passing through the first row (R1), the second row (R2), and the third row (R3). Accordingly, the electrolyte (E) can finally come into contact with a plurality of second shapes (234B) forming the third row (R3), and then be distributed and supplied to a plurality of electrolyte supply nozzles (22) positioned in the +x direction and the -x direction of each of the second shapes (234B) forming the third row (R3).

[0360] The electrolyte (E) may have a flow form in which the direction and path of the flow change in a zigzag shape while having a directionality in the +x direction and the -x direction while flowing in the -y direction, and branch out into a plurality of directions. This flow form of the electrolyte (E) may be generated to correspond to each of the plurality of second shapes (234B), and may be uniformly formed throughout the space (S) of the distribution space (233) in which the plurality of second shapes (234B) are arranged. In addition, if necessary, the above-described flow form may be implemented in a part of the target position on the space (S) of the distribution space (233) depending on the number, arrangement, size, etc. of the second shapes (234B).

[0361] The plurality of second shapes (234B) forming the third row (R3) may have an x-direction length that is smaller than the spacing between the electrolyte supply nozzles (22) (e.g., the first preset spacing). That is, the second length (L2) may be an x-direction length that is smaller than the first preset spacing, which is the spacing between the electrolyte supply nozzles (22). The plurality of second shapes (234B) forming the third row (R3) may have a second preset spacing between them in the x-direction.

[0362] The first length (L1) of the second shape (234B) forming the second row (R2) may be an x-direction length that is smaller than the second set interval. The first length (L1) may be an x-direction length that is smaller than the distance between the x-direction middle portions of adjacent second shapes (234B) forming the third row (R3). The second length (L2) may be longer than the first length (L1). The second length (L2) may also be shorter than the first length (L1).

[0363] The electrolyte (E) that has reached the second form (234B) of the second row (R2) branches off in the +x direction and the -x direction and flows along the upper surface (guide surface (G)), then departs from the x-direction ends of the second row (R2), that is, the +x-direction end and the -x-direction end, and moves in the -y direction while having an x-direction flow component, so that it can reach a plurality of second forms (234B) that form the third row (R3).

[0364] FIG. 33 is a schematic drawing of a manifold of a metal-air battery device according to the second embodiment of the present invention, and FIG. 34 is a schematic drawing of an electrolyte flow in a manifold of a metal-air battery device according to the second embodiment of the present invention.

[0365] Referring to FIG. 33 and FIG. 34, some of the plurality of distribution members (234) may have a first shape (234A), and other some of the plurality of distribution members (234) may have a second shape (234B) different from the first shape (234A).

[0366] A plurality of distribution members (234) may be arranged to form one or more columns. The plurality of distribution members (234) may be arranged to form one column corresponding to the first column (R1). Any one of the plurality of distribution members (234) forming one column may have a first shape (234A), and any other one may have a second shape (234B).

[0367] A plurality of distribution members (234) may be arranged to form a plurality of columns including a first column (R1), a second column (R2), and a third column (R3). A distribution member (234) forming at least one column among the first column (R1), the second column (R2), and the third column (R3) may have a first shape (234A), and a distribution member (234) forming another column may have a second shape (234B).

[0368] Among the plurality of columns including a first column (R1), a second column (R2), and a third column (R3), the first column (R1) and the second column (R2) can be formed by arranging one or more first shapes (234A) in the x direction, and the third column (R3) can be formed by arranging a plurality of second shapes (234B) in the x direction.

[0369] The electrolyte (E) can be sequentially passed through the first row (R1), the second row (R2), and the third row (R3), and then distributed and supplied to a plurality of electrolyte supply nozzles (22). The electrolyte (E) can reach the third row (R3) while having a sloped (or branched) branching shape and flow shape corresponding to a plurality of first shapes (234A) while passing through the first row (R1) and the second row (R2). The electrolyte (E) that has reached the third row (R3) can finally be transformed into a horizontal branching shape and flow shape while coming into contact with a plurality of second shapes (234B) forming the third row (R3), and then be distributed and supplied to a plurality of electrolyte supply nozzles (22) positioned in the +x direction and the -x direction of each of the second shapes (234B) forming the third row (R3).

[0370] The electrolyte (E) may have a flow form in which the direction and path of the flow change in a zigzag shape while flowing in the -y direction and the plurality of first forms (234A) and second forms (234B) as described above, and may have a flow form in which the direction and path of the flow change in a zigzag shape while having a directionality in the +x direction and the -x direction. This flow form of the electrolyte (E) may be generated corresponding to each of the plurality of first forms (234A) and second forms (234B).

[0371] Meanwhile, among the plurality of columns including a first column (R1), a second column (R2), and a third column (R3), the first column (R1) and the second column (R2) may be formed by arranging a plurality of second shapes (234B), and the third column (R3) may be formed by arranging a plurality of first shapes (234A). In addition, among the plurality of columns including a first column (R1), a second column (R2), and a third column (R3), the first column (R1) may be formed by arranging a plurality of first shapes (234A), and the second column (R2) and the third column (R3) may be formed by arranging a plurality of second shapes (234B). In addition, as a form of an embodiment other than that described above, depending on other needs, some of the plurality of distribution members (234) may have a first form (234A), and other some of the plurality of distribution members (234) may have a second form (234B) different from the first form (234A).

[0372] FIG. 35 is a drawing schematically illustrating a manifold of a metal-air battery device according to the second embodiment of the present invention, and FIG. 36 is a drawing schematically illustrating an electrolyte flow in a manifold of a metal-air battery device according to the second embodiment of the present invention.

[0373] Referring to FIGS. 35 and 36, a plurality of distribution members (234) may be arranged to form a single column. The plurality of distribution members (234) may be arranged to form a single column corresponding to a first column (R1). The first column (R1) may be formed by arranging one or more distribution members (234) in the x-direction. The plurality of distribution members (234) forming a single column may have a second shape (234B).

[0374] The first column (R1) may be positioned closer to the branch supply section (232) than to the electrolyte inlet section (231), and the upper side (+y direction side) of the first column (R1) may be empty without a distribution member (234) disposed thereon. A free space may be formed on the upper side of the first column (R1) so that the electrolyte (E) may be freely distributed and diffused without interference with the distribution members (234), rather than being guided by contact with the distribution members (234) during the process of flowing in the -y direction, or flowing between the distribution members (234).

[0375] The electrolyte (E) can be distributed and supplied to a plurality of electrolyte supply nozzles (22) after passing through the first row (R1). The electrolyte (E) has a horizontal branching shape and a flow shape corresponding to a plurality of second shapes (234B) while passing through the first row (R1), and can be distributed and supplied to a plurality of electrolyte supply nozzles (22) positioned in the +x direction and the -x direction of each of the second shapes (234B). This flow shape of the electrolyte (E) can be generated corresponding to each of the plurality of second shapes (234B).

[0376] If necessary, the above-described flow form can be implemented in a part of the intended location in the space (S) of the distribution space (233) depending on the number, arrangement, size, etc. of the distribution members (234). The above-described flow form can be implemented in the lower part (-y direction end) of the space (S) of the distribution space (233) depending on the number, arrangement, size, etc. of the second form (234B).

[0377] The plurality of distribution members (234) forming the first row (R1) may have different spacing intervals. Some of the plurality of distribution members (234) forming the first row (R1) may have a first spacing (D1) in the x-direction, and other of the plurality of distribution members (234) forming the first row (R1) may have a second spacing (D2) in the x-direction that is different from the first spacing (D1).

[0378] The electrolyte inlet (231) is positioned to correspond to the middle part of the x-direction of the distribution space (233). Accordingly, the electrolyte (E) is intensively introduced into the interior of the distribution space (233) at a position corresponding to the middle part of the x-direction of the distribution space (233). In order to supply the electrolyte (E) uniformly to a plurality of electrolyte supply nozzles (22), it is preferable to have a branching shape that distributes the electrolyte (E) on the middle part side in the x-direction while delivering it in the +x direction and -directions.

[0379] To this end, the spacing between the distribution members (234) located in the x-direction central portion of the distribution space (233) where the electrolyte inlet portion (231) is arranged and the spacing between the distribution members (234) located at the far right (+x direction) and far left (-x direction) of the distribution space (233) spaced apart from the distribution members (234) can be applied differently. The distribution members (234) located in the x-direction central portion can interfere with the electrolyte (E) relatively more than the distribution members (234) located at the far right (+x direction) and far left (-x direction) of the distribution space (233), or can induce interference between the electrolyte (E) and the electrolyte supply nozzle (22) located at the -y direction side.

[0380] The plurality of second shapes (234B) forming the first row (R1) may have different spacing intervals. Some of the plurality of second shapes (234B) forming the first row (R1) may have a first spacing (D1) in the x-direction, and other of the plurality of second shapes (234B) forming the first row (R1) may have a second spacing (D2) in the x-direction that is different from the first spacing (D1).

[0381] Among the plurality of second shapes (234B), the second shapes (234B) located in the x-direction center of the first row (R1) may have a first spacing (D1) between them. The second shapes (234B) may have an x-direction spacing that becomes larger as they go in the +x direction and -x direction. Among the plurality of second shapes (234B), the second shapes (234B) located at the rightmost (+x direction) and leftmost (-x direction) of the first row (R1) may have a second spacing (D2) between them. The second spacing (D2) may be larger than the first spacing (D1).

[0382] In this way, by making the spacing between the distribution members (234) positioned in the central part in the x direction relatively smaller than that of the distribution members (234) positioned at the far right (+x direction) and far left (-x direction) of the distribution space (233), i.e., by arranging them more closely, the distribution members (234) positioned at the far right (+x direction) and far left (-x direction) can be induced to interfere relatively more with the electrolyte (E) or interfere with the flow of the electrolyte (E) to the electrolyte supply nozzle (22) positioned at the -y direction side.

[0383] A plurality of distribution members (234) forming a single row may have a first shape (234A). Among the plurality of distribution members (234) forming a single row, one of the plurality of distribution members (234) may have the first shape (234A), and another of the plurality of distribution members (234) may have the second shape (234B). In addition, the distribution space (233) may have a y-direction length that allows arranging one row corresponding to the first row (R1) without the above-described extra space. In addition, if necessary, the second interval (D2) may be smaller than the first interval (D1).

[0384]

[0385] While the present application has been described in detail using preferred embodiments, the scope of the present application is not limited to specific embodiments and should be interpreted in accordance with the appended claims. Furthermore, those skilled in the art will appreciate that numerous modifications and variations are possible without departing from the scope of the present application.

Claims

1. A metal-air battery unit including a metal-air battery cell in which a metal electrode and an air electrode are arranged facing each other; and Including an electrolyte supply unit that supplies an electrolyte between the metal electrode and the air electrode, The above metal-air battery part, A metal-air battery system comprising a cathode material refueling tank for replenishing cathode material to the metal electrode.

2. In paragraph 1, The above electrolyte supply unit, An electrolyte supply line that supplies the electrolyte to a path between the metal electrode and the air electrode and circulates the electrolyte discharged from the path; An electrolyte reservoir tank in which the electrolyte supplied to the above-mentioned euro, discharged from the above-mentioned euro, or circulated along the electrolyte supply line is stored; and A metal-air battery system further comprising an electrolyte supply nozzle connected to the electrolyte reservoir tank through the electrolyte supply line and spraying the electrolyte onto the surface of the metal electrode or the air electrode, wherein the spraying strength of the electrolyte is controlled.

3. In paragraph 2, The above electrolyte supply unit, A heater that controls the temperature of the electrolyte stored in the electrolyte reservoir tank and supplied to the flow path; A first heat exchanger and a second heat exchanger for controlling the temperature of the electrolyte circulated along the electrolyte supply line; A filter disposed between the first heat exchanger and the second heat exchanger; and A metal-air battery system further comprising a pump disposed between the electrolyte reservoir tank and the electrolyte supply nozzle.

4. In paragraph 1, The above metal-air battery part, Further comprising a hydrogen capture tank for capturing hydrogen bubbles formed in the metal-air battery cell, The above filter filters out corrosion products formed in the metal-air battery cell, The first heat exchanger and the second heat exchanger are configured to lower the temperature of the metal-air battery cell, A metal-air battery system, wherein the amount of current generated in the metal-air battery section increases when the hydrogen bubbles are captured, the corrosion products are filtered, or the temperature is lowered.

5. In paragraph 1, A metal-air battery system, wherein the negative electrode material is supplemented to the metal electrode, thereby increasing the amount of current generated in the metal-air battery unit.

6. In paragraph 1, The above metal-air battery part, A metal-air battery stack cell comprising at least one of the above metal-air battery cells; and A metal-air battery system further comprising a battery connected to the metal-air battery cell and storing electric energy generated from the metal-air battery cell.

7. In paragraph 2, Further comprising a control unit for controlling the operation of the metal-air battery unit and the electrolyte supply unit, The above control unit, Controlling the current intensity of the above metal-air battery section to be measured, When the above current intensity is less than the set standard, the injection intensity of the electrolyte is controlled to increase through the electrolyte supply nozzle, When the injection intensity is increased but the amount of current generated in the metal-air battery unit does not increase, the supply of the electrolyte to the metal-air battery unit is controlled to be stopped, A metal-air battery system, comprising controlling the replenishment of the negative electrode material from the negative electrode material refueling tank to the metal electrode.

8. In paragraph 1, The above negative electrode material has a paste formulation, A metal-air battery system, wherein the metal electrode and the negative electrode material comprise aluminum.

9. A step of measuring the current intensity of a metal-air battery unit including a metal-air battery cell in which a metal electrode and an air electrode are arranged facing each other; When the current intensity is less than the set standard, a step of increasing the spray intensity for spraying the electrolyte on the surface of the metal electrode or the air electrode through an electrolyte supply nozzle of an electrolyte supply unit that supplies the electrolyte between the metal electrode and the air electrode; A step of stopping the supply of the electrolyte to the metal-air battery unit when the injection intensity increases but the amount of current generated from the metal-air battery unit does not increase; and A method of operating a metal-air battery system, comprising the step of replenishing a negative electrode material to the metal electrode.

10. In paragraph 9, The step of increasing the above injection strength is: By the flow of the electrolyte with increased injection strength, an impingement jet is formed inside the metal-air battery cell, A method of operating a metal-air battery system, comprising: desorbing hydrogen bubbles or corrosion products from the surfaces of the metal electrode and the air electrode by the impinging jet, or lowering the temperature of the metal-air battery cell.

11. In paragraph 9, A method of operating a metal-air battery system, comprising: when the negative electrode material is supplemented to the metal electrode, the amount of current generated in the metal-air battery unit increases.

12. In paragraph 9, A method of operating a metal-air battery system, wherein the electrolyte is circulated between the metal-air battery unit and the electrolyte supply unit.

13. Electrolyte inlet section through which electrolyte is introduced; A branch supply unit connected to an electrolyte supply nozzle that discharges electrolyte into a metal-air battery cell; A distribution space formed between the electrolyte inlet and the branch supply unit, and forming a space in which the electrolyte introduced into the electrolyte inlet can flow toward the branch supply unit; and A manifold for a metal-air battery device, characterized in that it includes a distribution member having a guide surface arranged on the distribution space and guiding the electrolyte to be distributed toward a plurality of the electrolyte supply nozzles.

14. In paragraph 13, The above distribution space has a width that expands from the electrolyte inlet portion toward the branch supply portion, A manifold of a metal-air battery device, characterized in that the side surface of the above distribution space is formed to be inclined in any one of a straight line, a curve, and a step shape.

15. In paragraph 13, A plurality of the electrolyte supply nozzles are arranged in the x direction and are positioned in the -y direction of the electrolyte inlet, and the electrolyte flows in the -y direction in the distribution space and is distributed in the +x direction and the -x direction by contacting the guide surface of the distribution member. A manifold for a metal-air battery device, characterized in that a plurality of the above distribution members are arranged to be spaced apart from each other, and a passage through which an electrolyte can flow in the x-direction and y-direction is formed between the above distribution members.

16. In paragraph 15, The above distribution member is, A first extension formed to extend in the +x direction so as to guide the electrolyte in the +x direction; and It includes a second extension portion formed to extend in the -x direction so as to guide the electrolyte in the -x direction, A manifold of a metal-air battery device, characterized in that the first extension portion is formed to be inclined in the -y direction toward the electrolyte supply nozzle located in the +x direction, and the second extension portion is formed to be inclined in the -y direction toward the electrolyte supply nozzle located in the -x direction.

17. In paragraph 16, The above distribution member is, A manifold of a metal-air battery device, characterized in that it further includes a third extension formed between the first extension and the second extension and formed to extend in the +y direction.

18. In paragraph 15, A manifold of a metal-air battery device, characterized in that the above distribution member is formed to extend in the x direction by having the above guide surface in a flat shape so that the electrolyte that reaches any point on the guide surface can be distributed in the +x direction and -x direction.

19. In paragraph 15, The above distribution member is, A manifold of a metal-air battery device characterized in that it forms a first row formed by one of the above distribution members or by a plurality of the above distribution members being arranged in the x-direction.

20. In paragraph 19, The above distribution member is, A second row is formed in which the first row is arranged in the -y direction, and a greater number of the distribution members than the first row are arranged in the x direction, some of the plurality of distribution members are positioned in the +x direction of the first row, and other parts of the plurality of distribution members are positioned in the -x direction of the first row. Some of the plurality of distribution members have a first shape, and other some of the plurality of distribution members have a second shape different from the first shape, The distribution member of the first row has the first shape, and the distribution member of the second row has the second shape. Some of the plurality of distribution members have a first length in the x-direction, and other some of the plurality of distribution members have a second length different from the first length, A manifold for a metal-air battery device, characterized in that the distribution member of the first row has the first length, and the distribution member of the second row has the second length.

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