Battery

Abstract

The present invention relates to a secondary battery in which metal ions dissolved in an electrolyte are oxidized and reduced to charge and discharge. A secondary battery according to an embodiment of the present invention comprises a first current collector, a second current collector spaced apart from the first current collector, a separator spaced between the first current collector and the second current collector, a frame forming a first electrode receiving portion between the first current collector and the separator and a second electrode receiving portion between the second current collector and the separator, a first adhesive member connecting the first current collector and the frame, a second adhesive member connecting the second current collector and the frame, and a transition portion communicating the first electrode receiving portion and the second electrode receiving portion, wherein at least a portion of the transition portion is formed by the first adhesive member and the frame or by the second adhesive member and the frame.

Description

Technology Field

[0001] The present invention relates to a secondary battery, and more specifically, to a secondary battery in which metal ions dissolved in an electrolyte are oxidized and reduced to charge and discharge. Background Technology

[0002] Unlike conventional rechargeable batteries, a Redox Flow Battery (RFB) is an electrochemical energy storage device that stores electrical energy as chemical energy in the electrolyte. It operates by having the actual electrochemical reaction take place in the stack and continuously circulating the electrolyte within the stack using a fluid pump. While such Redox Flow Batteries offer advantages such as a long lifespan, high output, and high capacity, they have faced issues related to spatial constraints and design difficulties due to the electrolyte storage tank and the fluid pump required to circulate the electrolyte. Accordingly, the inventors of this invention developed a Redox rechargeable battery that eliminates the electrolyte tank and fluid pump; however, this resulted in a large volume due to low energy density. The problem to be solved

[0003] The problem that the present invention aims to solve is to provide a secondary battery with minimized volume.

[0004] The problems of the present invention are not limited to those mentioned above, and other unmentioned problems will be clearly understood by those skilled in the art from the description below. means of solving the problem

[0005] To achieve the above objective, a secondary battery according to an embodiment of the present invention comprises a first current collector, a second current collector spaced apart from the first current collector, a separator spaced between the first current collector and the second current collector, a frame forming a first electrode receiving portion between the first current collector and the separator and a second electrode receiving portion between the second current collector and the separator, a first adhesive member connecting the first current collector and the frame, a second adhesive member connecting the second current collector and the frame, and a transition portion communicating the first electrode receiving portion and the second electrode receiving portion, wherein at least a portion of the transition portion is formed by the first adhesive member and the frame or by the second adhesive member and the frame.

[0006] To achieve the above objective, a secondary battery according to an embodiment of the present invention comprises a first current collector, a second current collector spaced apart from the first current collector, a separator spaced between the first current collector and the second current collector, a frame forming a first electrode receiving portion between the first current collector and the separator and a second electrode receiving portion between the second current collector and the separator, a first adhesive member connecting the first current collector and the frame, a second adhesive member connecting the second current collector and the frame, and a transition portion communicating the first electrode receiving portion and the second electrode receiving portion, wherein at least a portion of the first adhesive member and the second adhesive member are positioned on the frame in the in-plane direction outside of the transition portion.

[0007] To achieve the above objective, a secondary battery according to an embodiment of the present invention comprises: a first liquid electrode in which a first half-reaction occurs; a second liquid electrode in which a second half-reaction occurs; a separator disposed between the first liquid electrode and the second liquid electrode; a frame supporting the separator; a first current collector electrically connected to the first liquid electrode; a second current collector electrically connected to the second liquid electrode; a first adhesive member connecting the first current collector and the frame; a second adhesive member connecting the second current collector and the frame; and a transition section in which the first liquid electrode and / or the second liquid electrode flow, wherein the first liquid electrode and / or the second liquid electrode flowing through the transition section are in contact with the first adhesive member and / or the second adhesive member.

[0008] To achieve the above objective, a secondary battery according to an embodiment of the present invention comprises: a first liquid electrode in which a first half-reaction occurs; a second liquid electrode in which a second half-reaction occurs; a separator disposed between the first liquid electrode and the second liquid electrode; a frame supporting the separator; a first current collector electrically connected to the first liquid electrode; a second current collector electrically connected to the second liquid electrode; a transition section in which the first liquid electrode and / or the second liquid electrode flows; a first adhesive member that adheres to the frame and the first current collector so that the first liquid electrode or the second liquid electrode flowing in the transition section does not come into contact with the first current collector; and a second adhesive member that adheres to the frame and the second current collector so that the first liquid electrode or the second liquid electrode flowing in the transition section does not come into contact with the first current collector.

[0009] To achieve the above objective, a secondary battery according to an embodiment of the present invention comprises: a first liquid electrode in which a first half-reaction occurs; a second liquid electrode in which a second half-reaction occurs; a separator disposed between the first liquid electrode and the second liquid electrode; a frame supporting the separator and forming a space in which the first liquid electrode and the second liquid electrode flow; a first solid electrode impregnated with the first liquid electrode; a second solid electrode impregnated with the second liquid electrode; a first current collector electrically connected to the first liquid electrode; a second current collector electrically connected to the second liquid electrode; a first adhesive member connecting the first current collector and the frame; and a second adhesive member connecting the second current collector and the frame, wherein the first adhesive member and the second adhesive member are located in the space formed by the frame, the first solid electrode and the It is placed in a space where the second solid electrode is not placed.

[0010] Specific details of other embodiments are included in the detailed description and drawings. Effects of the invention

[0011] According to the secondary battery of the present invention, one or more of the following effects are present.

[0012] First, it has the advantage of preventing liquid electrode leakage by joining the frame and the current collector using an adhesive member.

[0013] Second, the adhesive member is positioned between the transition section and the current collector, which has the advantage of preventing electrochemical corrosion of the current collector caused by a short circuit when the liquid electrode flowing through the transition section comes into contact with the current collector.

[0014] Third, the adhesive member joins the edges of the frame and the current collector in a closed curve, which has the advantage of suppressing frame deformation and liquid electrode leakage.

[0015] Fourth, since the transition section is formed relatively evenly in the frame, stress concentration does not occur in specific parts, which has the advantage of allowing the frame to be made thin with a constant width.

[0016] The effects of the present invention are not limited to those mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art from the description in the claims. Brief explanation of the drawing

[0017] FIG. 1 is an exploded perspective view of a secondary battery according to one embodiment of the present invention. FIG. 2 is a perspective view of a secondary battery according to one embodiment of the present invention. Figure 3 is a 3-3 cross-sectional view of the secondary battery shown in Figure 2. FIG. 4 is a perspective view of a secondary battery module according to one embodiment of the present invention. FIG. 5 is a plan view of a portion of a secondary battery according to one embodiment of the present invention. FIG. 6 is a front view of a frame according to one embodiment of the present invention. FIG. 7 is a rear view of a frame according to one embodiment of the present invention. FIG. 8 is a diagram showing the flow of a liquid electrode through a transition section of a secondary battery according to one embodiment of the present invention. FIG. 9 is a 9-9 cross-sectional view of the frame shown in FIG. 7. FIG. 10 is a partial cross-sectional view of a secondary battery according to another embodiment of the present invention. FIG. 11 is a partial cross-sectional view of a secondary battery according to another embodiment of the present invention. Specific details for implementing the invention

[0018] The advantages and features of the present invention and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below but may be implemented in various different forms. These embodiments are provided merely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims. Throughout the specification, the same reference numerals refer to the same components.

[0019] Although terms such as "first," "second," etc., are used to describe various components, it goes without saying that these components are not limited by these terms. These terms are used merely to distinguish one component from another, and unless specifically stated otherwise, the first component may also be the second component.

[0020] Throughout the specification, unless specifically stated otherwise, each component may be singular or plural.

[0021] In the following, the statement that any configuration is placed on the "upper (or lower)" of a component or on the "upper (or lower)" of a component may mean not only that any configuration is placed in contact with the upper (or lower) surface of said component, but also that another configuration may be interposed between said component and any configuration placed on (or below) said component.

[0022] In addition, where it is stated that one component is "connected," "combined," or "connected" to another component, it should be understood that while the components may be directly connected or connected to each other, another component may be "interposed" between each component, or each component may be "connected," "combined," or "connected" through another component.

[0023] Singular expressions used in this specification include plural expressions unless the context clearly indicates otherwise. In this application, terms such as "composed of" or "comprising" should not be interpreted as necessarily including all of the various components or steps described in the specification, and should be interpreted as meaning that some of the components or steps may be omitted or additional components or steps may be included.

[0024] Throughout the specification, "A and / or B" means A, B, or A and B unless specifically stated otherwise, and "C to D" means C or more and D or less unless specifically stated otherwise.

[0025] Hereinafter, the present invention will be described with reference to the drawings for explaining a secondary battery according to embodiments of the present invention.

[0026] FIG. 1 is an exploded perspective view of a secondary battery according to one embodiment of the present invention, FIG. 2 is a perspective view of a secondary battery according to one embodiment of the present invention, FIG. 3 is a cross-sectional view in the 3-3 direction of the secondary battery shown in FIG. 2, and FIG. 4 is a perspective view of a secondary battery module according to one embodiment of the present invention.

[0027] A secondary battery according to one embodiment of the present invention comprises: a first current collector (130a); a second current collector (130b) spaced apart from the first current collector (130a); a separator (120) disposed between the first current collector (130a) and the second current collector (130b); a frame (110) forming a first electrode receiving portion (111a) and a second electrode receiving portion (111b); a first liquid electrode received in the first electrode receiving portion (111a) where a first half-reaction occurs; a second liquid electrode received in the second electrode receiving portion (111b) where a second half-reaction occurs; a first solid electrode (150a) disposed in the first electrode receiving portion (111a) and impregnated with the first liquid electrode; and a second solid electrode disposed in the second electrode receiving portion (111b). It includes a second solid electrode (150b) impregnated with a second liquid electrode, a first adhesive member (160a) that combines a first current collector (130a) and a frame (110), a second adhesive member (160b) that combines a second current collector (130b) and a frame (110), and a transition part (112) that connects a first electrode receiving part (111a) and a second electrode receiving part (111b).

[0028] The first liquid electrode is an electrolyte in which an anode redox couple is dissolved. The anode redox couple can be implemented with a material comprising at least one of vanadium (V), zinc (Zn), bromine (Br), chromium (Cr), manganese (Mn), titanium (Ti), iron (Fe), cerium (Ce), and cobalt (Co), and in this embodiment, V 2+ / V 3+ It is a redox couple. The first liquid electrode may be an acidic aqueous solution that conducts current through ionization, preferably containing sulfuric acid. In this embodiment, the first liquid electrode may be prepared by dissolving VOSO4 (vanadylsulfate) or V2O5 (vanadium pentoxide) in an aqueous H2SO4 solution.

[0029] The first liquid electrode causes the first half-reaction. The first half-reaction is as follows, where → indicates the direction of the discharge reaction and ← indicates the direction of the charge reaction.

[0030] V 2+ ←→ V 3+ + e -

[0031] During discharge, vanadium divalent ions are oxidized to vanadium trivalent ions, and during charging, vanadium trivalent ions are reduced to vanadium divalent ions.

[0032] The first liquid electrode is provided surrounded by a frame (110), a first current collector (130a), and a separator (120). The first liquid electrode is not leaked in an in-plane direction, etc., between the first current collector (130a) and the frame (110) by means of a first adhesive member (160a). Hereinafter, the in-plane direction refers to a direction parallel to the plane formed by the separator (120). The first liquid electrode is received in a first electrode receiving portion (111a). It is preferable that the first liquid electrode be impregnated into a first solid electrode (150a).

[0033] The first liquid electrode is electrically connected to the first current collector (130a), so that electrons move to the first current collector (130a) during discharge, and electrons from the first current collector (130a) move to the first liquid electrode during charging. The first liquid electrode is in contact with the separator (120), and hydrogen cations (protons) move through the separator (120).

[0034] The second liquid electrode is an electrolyte in which a cathode redox couple is dissolved. The cathode redox couple can be implemented with a material comprising at least one of vanadium (V), zinc (Zn), bromine (Br), chromium (Cr), manganese (Mn), titanium (Ti), iron (Fe), cerium (Ce), and cobalt (Co), and in this embodiment, V 4+ / V 5+It is a redox couple. The second liquid electrode may be an acidic aqueous solution that conducts current through ionization, preferably containing sulfuric acid. In this embodiment, the second liquid electrode may be prepared by dissolving VOSO4 (vanadylsulfate) or V2O5 (vanadium pentoxide) in an aqueous H2SO4 solution.

[0035] The second liquid electrode causes the second half-reaction. The second half-reaction is as follows, where → indicates the direction of the discharge reaction and ← indicates the direction of the charge reaction.

[0036] V 5+ + e - ←→ V 4+

[0037] During discharge, vanadium pentavalent ions are reduced to vanadium tetravalent ions, and during charging, vanadium tetravalent ions are oxidized to vanadium pentavalent ions.

[0038] The second liquid electrode is provided surrounded by a frame (110), a second current collector (130b), and a separator (120). The second liquid electrode is not leaked in an in-plane direction, etc., by means of a second adhesive member between the second current collector (130b) and the frame (110). The second liquid electrode is received in a second electrode receiving portion (111b). It is preferable that the second liquid electrode be impregnated into the second solid electrode (150b).

[0039] The second liquid electrode is electrically connected to the second current collector (130b), so that electrons move to the second current collector (130b) during charging, and electrons from the second current collector (130b) move to the second liquid electrode during discharging. The second liquid electrode is in contact with the separator (120), and hydrogen cations (protons) move through the separator (120).

[0040] As previously discussed, the first liquid electrode and the second liquid electrode have the same composition. The first liquid electrode and the second liquid electrode contain vanadium ions in an electrolyte of the same composition. Hereinafter, the first liquid electrode and the second liquid electrode will be collectively referred to as the liquid electrode.

[0041] The frame (110) is formed as a hollow square. According to the embodiment, the frame (110) may be formed as a rhombus, a circle, a triangle, or a polygon of pentagon or more. The frame (110) has a predetermined thickness in the out-of-plane direction to form a first electrode receiving portion (111a) and a second electrode receiving portion (111b). Hereinafter, the out-of-plane direction refers to a direction penetrating the in-plane direction (a direction parallel to the plane formed by the separator (120)). The out-of-plane direction includes the through-thickness direction of the frame (110), but does not refer only to a direction perpendicular to the in-plane direction.

[0042] The frame (110) is formed so that its edge matches the edge of the first carbon collector (132a) of the first collector (130a) and the edge of the second carbon collector (132b) of the second collector (130a).

[0043] A first current collector (130a) is disposed on one side of the frame (110) in the out-of-plane direction, and a second current collector (130b) is disposed on the other side. The hollow of the frame (110) is closed by the first current collector (130a) and the second current collector (130b). The frame (110) is disposed between the first current collector (130a) and the second current collector (130b) to prevent leakage of the first liquid electrode and the second liquid electrode in the in-plane direction, etc. The frame (110) is coupled to the first current collector (130a) by a first adhesive member (160a) and coupled to the second current collector (130b) by a second adhesive member (160b).

[0044] A separator (120) is disposed in the hollow of the frame (110). The hollow of the frame (110) is divided into two spaces by the separator (120). The frame (110) can be bonded to the separator (120) with an adhesive having the same components as the first adhesive member (160a) or the second adhesive member (160b).

[0045] The frame (110) forms a first electrode receiving portion (111a) between the first current collector (130a) and the separator (120), and forms a second electrode receiving portion (111b) between the second current collector (130b) and the separator (120).

[0046] The frame (110) accommodates a first liquid electrode and a second liquid electrode. A first solid electrode (150a) and a second solid electrode (150b) are disposed inside the frame (110). A first adhesive member (160a) is attached to one edge of the frame (110) in the out-of-plane direction, and a second adhesive member (160b) is attached to the other edge of the frame (110) in the out-of-plane direction.

[0047] The frame (110) forms a transition portion (112) with the first adhesive member (160a) or the second adhesive member (160b).

[0048] The transition section (112) connects the first electrode receiving section (111a) and the second electrode receiving section (111b). The first liquid electrode and / or the second liquid electrode flow through the transition section (112). A portion of the transition section (112) is formed as a groove on the edge of the frame (110), and another portion is formed as a hole. The groove of the transition section (112) is formed by being recessed outward from the frame (110) so that the inward direction is the longitudinal direction. The hole of the transition section (112) is formed by penetrating the frame (110) outwardly so that the outward direction is the longitudinal direction.

[0049] The transition portion (112) is formed, at least in part, by the first adhesive member (160a) and the frame (110) or by the second adhesive member (160b) and the frame (110). The transition portion (112) is positioned between the first adhesive member (160a) and the second adhesive member (160b). One side of the transition portion (112) in the out-of-plane direction is covered by the first adhesive member (160a), and the other side in the out-of-plane direction is covered by the second adhesive member (160b). The first liquid electrode and / or the second liquid electrode flowing through the transition portion (112) come into contact with the first adhesive member (160a) and / or the second adhesive member (160b).

[0050] A detailed description of the transition part (112) will be given later with reference to FIGS. 6 to 9.

[0051] The separator (120) is positioned inside the frame (110) to separate the first liquid electrode and the second liquid electrode and to allow hydrogen cations (protons) to move between the first liquid electrode and the second liquid electrode. The separator (120) is positioned inside the frame (110) at the center in the thickness direction of the frame (110) to distinguish the first electrode receiving portion (111a) and the second electrode receiving portion (111b).

[0052] The separator (120) is positioned between the first liquid electrode and the second liquid electrode. The separator (120) is positioned between the first current collector (130a) and the second current collector (130b). The separator (120) is positioned in the frame (110) in the inner side in the in-plane direction than the first adhesive member (160a) or the second adhesive member (160b). The edge of the separator (120) is attached to the frame (110).

[0053] Hydrogen cations pass through the separator (120) during discharge and move from the first liquid electrode to the second liquid electrode, and pass through the separator (120) during charging and move from the second liquid electrode to the first liquid electrode.

[0054] The separator (120) may include a perfluorinated ionomer, a partially fluorinated polymer, and non-fluorinated hydrocarbons. The separator (120) may be formed of or include Nafion®, Flemion®, NEOSEPTA-F®, or Gore Select®.

[0055] The separator (120) must prevent the first liquid electrode and the second liquid electrode from mixing with each other, but a crossover phenomenon may occur during charging or discharging in which vanadium ions and water contained in the first liquid electrode and the second liquid electrode pass through the separator (120). Accordingly, an imbalance occurs between the amount of the first liquid electrode and the amount of the second liquid electrode, which affects the performance and lifespan of the secondary battery. In the case of a liquid electrode tank and a pump, as in a conventional redox secondary battery, such an imbalance of the liquid electrodes can be resolved, but in the case of the present invention, where a small amount of liquid electrode exists only inside the secondary battery, even a small difference in imbalance affects the performance and lifespan of the secondary battery. The transition section (112) resolves the imbalance caused by this crossover, and the first liquid electrode or the second liquid electrode with increased volume moves through the transition section (112) to the first liquid electrode or the second liquid electrode with reduced volume.

[0056] The first current collector (130a) is positioned on one side of the frame (110) to form a first electrode receiving portion (111a) together with the frame (110) and the separator (120). The first current collector (130a) is positioned parallel to and spaced apart from the second current collector (130b). The first current collector (130a) is attached to a first adhesive member (160a) attached to the frame (110). The first current collector (130a) is coupled to the frame (110) by the first adhesive member (160a). The first adhesive member (160a) is applied or attached to the edge of the first current collector (130a).

[0057] The first current collector (130a) is not in direct contact with the first liquid electrode or the second liquid electrode flowing through the transition section (112) to which the first adhesive member (160a) is attached. The first current collector (130a) is electrically connected to the first liquid electrode so that electrons move to allow current to flow during charging and discharging.

[0058] As shown in FIG. 4, when a plurality of secondary batteries form a module with a plurality of frames (110), a plurality of first current collectors (130a), and a plurality of second current collectors (130b), the plurality of first current collectors (130a) are electrically connected by a bus bar (not shown) to connect the plurality of secondary batteries in parallel or in series.

[0059] The first current collector (130a) includes a first metal current collector (131a) formed of metal and electrically connected to a busbar, and a first carbon current collector (132a) disposed between the first metal current collector (131a) and the frame (110).

[0060] The first carbon current collector (132a) is formed from a material such as graphite, carbon, carbon plastic, etc., and has high electrical conductivity and high acid resistance. The first carbon current collector (132a) is placed between the first liquid electrode and the first metal current collector (131a) to allow electrons to move between them, while preventing the first metal current collector (131a) from being oxidized. The first carbon current collector (132a) may be formed in the shape of a rectangular plate or may be formed by coating it onto the first metal current collector (131a).

[0061] The first carbon collector (132a) is formed so that its edge aligns with the edge of the frame (110). The first carbon collector (132a) is joined to the frame (110) by the first adhesive member (160a). The first adhesive member (160a) is applied or adhered to the edge of the first carbon collector (132a).

[0062] The first metal current collector (131a) is formed of a metal with high electrical conductivity, for example, copper or aluminum. The first metal current collector (131a) is formed in the shape of a rectangular plate, with a portion protruding so as to be connected to a bus bar.

[0063] The first metal current collector (131a) may be formed as a flexible thin film or as a rigid plate. When a plurality of secondary batteries form a module as shown in FIG. 4, the plurality of first metal current collectors (131a) may be formed as flexible thin films, but only some of them may be formed as rigid plates.

[0064] A first carbon current collector (132a) is disposed on one side of a first metal current collector (131a). When a plurality of secondary batteries form a module as shown in FIG. 4, the first carbon current collector (132a) is disposed on both sides of the first metal current collector (131a).

[0065] The second current collector (130b) is positioned on the other side of the frame (110) to form a second electrode receiving portion (111b) together with the frame (110) and the separator (120). The second current collector (130b) is positioned parallel to and spaced apart from the first current collector (130a). The second current collector (130b) is attached to a second adhesive member (160b) attached to the frame (110). The second current collector (130b) is coupled to the frame (110) by the second adhesive member (160b). The second adhesive member (160b) is applied or attached to the edge of the second current collector (130b).

[0066] The second current collector (130b) is not in direct contact with the first liquid electrode or the second liquid electrode flowing through the transition section (112) by the second adhesive member (160b) being adhered thereto. The second current collector (130b) is electrically connected to the second liquid electrode so that electrons move to allow current to flow during charging and discharging.

[0067] As shown in FIG. 4, when a plurality of secondary batteries form a module with a plurality of frames (110), a plurality of first current collectors (130a), and a plurality of second current collectors (130b), the plurality of second current collectors (130b) are electrically connected by a bus bar (not shown) to connect the plurality of secondary batteries in parallel.

[0068] The second current collector (130b) includes a second metal current collector (131b) formed of metal and electrically connected to a busbar, and a second carbon current collector (132b) disposed between the second metal current collector (131b) and the frame (110).

[0069] The second carbon current collector (132b) is formed from a material such as graphite, carbon, carbon plastic, etc., and has high electrical conductivity and high acid resistance. The second carbon current collector (132b) is placed between the second liquid electrode and the second metal current collector (131b) to allow electrons to move between them, while preventing the second metal current collector (131b) from being oxidized. The second carbon current collector (132b) may be formed in the shape of a rectangular plate or may be formed by coating it onto the second metal current collector (131b).

[0070] The second carbon collector (132b) is formed so that its edge aligns with the edge of the frame (110). The second carbon collector (132b) is joined to the frame (110) by the second adhesive member (160b). The second adhesive member (160b) is applied or adhered to the edge of the second carbon collector (132b).

[0071] The second metal current collector (131b) is formed of a metal with high electrical conductivity, for example, copper or aluminum. The second metal current collector (131b) is formed in the shape of a square plate, but a portion of it may protrude and be connected to a bus bar.

[0072] The second metal current collector (131b) may be formed as a flexible thin film or as a rigid plate. When a plurality of secondary batteries form a module as shown in FIG. 4, the plurality of second metal current collectors (131b) may be formed as flexible thin films, but only some of them may be formed as rigid plates.

[0073] A second carbon current collector (132b) is disposed on one side of the second metal current collector (131b). When a plurality of secondary batteries form a module as shown in FIG. 4, the second carbon current collector (132b) is disposed on both sides of the second metal current collector (131b).

[0074] The first solid electrode (150a) is impregnated with the first liquid electrode and disposed in the first electrode receiving portion (111a). The first solid electrode (150a) is disposed surrounded by a frame (110), a first current collector (130a), and a separator (120). The first solid electrode (150a) comprises carbon-based materials such as carbon or graphite felt, carbon cloth, carbon black, graphite powder, or graphene. The first solid electrode (150a) is disposed in the in-plane direction in the frame (110) relative to the first adhesive member (160a).

[0075] The first solid electrode (150a) may be formed in a porous cuboid shape. The first solid electrode (150a) may have a thickness greater than the out-of-plane thickness of the first electrode receiving portion (111a), in which case it may be compressed and received in the first electrode receiving portion (111a). The first solid electrode (150a) is in close contact with the first current collector (130a) and the separator (120).

[0076] The second solid electrode (150b) is impregnated with the second liquid electrode and placed in the second electrode receiving portion (111b). The second solid electrode (150b) is surrounded by the frame (110), the second current collector (130b), and the separator (120). The second solid electrode (150b) comprises carbon-based materials such as carbon or graphite felt, carbon cloth, carbon black, graphite powder, or graphene. The second solid electrode (150b) is placed in the frame (110) in the in-plane direction inward from the second adhesive member (160b).

[0077] The second solid electrode (150b) may be formed in a porous cuboid shape. The second solid electrode (150b) may have a thickness greater than the out-of-plane thickness of the second electrode receiving portion (111b), in which case it may be compressed and received in the second electrode receiving portion (111b). The second solid electrode (150b) is in close contact with the second current collector (130b) and the separator (120).

[0078] Each of the first adhesive member (160a) and the second adhesive member (160b) comprises at least one of an acrylate-based adhesive, an acrylate-ester-based adhesive, an acrylate-ethylene-based adhesive, a polycarbonate-based adhesive, a polyethylene-based adhesive, an epoxy-based adhesive, and an isocyanate-based adhesive. Each of the first adhesive member (160a) and the second adhesive member (160b) is one of a solvent-based adhesive, an emulsion-based adhesive, a hot-melt-based adhesive, a liquid-curing adhesive, and a film-based adhesive, or a combination thereof.

[0079] Each of the first adhesive member (160a) and the second adhesive member (160b) may be formed in a strip shape. Each of the first adhesive member (160a) and the second adhesive member (160b) may be formed in a hollow square shape. Each of the first adhesive member (160a) and the second adhesive member (160b) may be formed in a closed curve shape. Each of the first adhesive member (160a) and the second adhesive member (160b) is formed so that its edge aligns with the edge of the frame (110).

[0080] The first adhesive member (160a) combines the first carbon collector (132a) of the first current collector (130a) with the frame (110). The first adhesive member (160a) seals the space between the first carbon collector (132a) of the first current collector (130a) and the frame (110). The first adhesive member (160a) is laminated between the first carbon collector (132a) of the first current collector (130a) and the frame (110). The first adhesive member (160a) is adhered to one edge of the frame (110) in the out-of-plane direction. The first adhesive member (160a) is adhered to the edge of the side of the first carbon collector (132a) where the first metal current collector (131a) is not placed. The first adhesive member (160a) can be applied to the first carbon collector (132a) and adhered to the frame (110).

[0081] The first adhesive member (160a) is positioned so that its edge aligns with the first carbon collector (132a) of the first current collector (130a) and the frame (110). The first adhesive member (160a) is positioned on the frame (110) in an in-plane direction outside of the first solid electrode (150a). The first adhesive member (160a) is positioned on the frame (110) in an in-plane direction outside of the first electrode receiving portion (111a). The first adhesive member (160a) is positioned on the frame (110) in an in-plane direction outside of the separator (120).

[0082] The first adhesive member (160a) forms part of the frame (110) and the transition portion (112). The first adhesive member (160a) covers part of the transition portion (112). The first adhesive member (160a) covers the portion of the transition portion (112) that is formed as an in-plane groove at the edge of the frame (110). The first adhesive member (160a) covers the portion of the transition portion (112) that is formed as an out-plane hole at the edge of the frame (110).

[0083] At least a portion of the first adhesive member (160a) is positioned on the frame (110) and on the outer side in the in-plane direction from the transition portion (112). The first liquid electrode or the second liquid electrode flowing through the transition portion (112) comes into contact with the first adhesive member (160a). The first adhesive member (160a) is adhered to the frame (110) and the first current collector (130a) so that the first liquid electrode or the second liquid electrode flowing through the transition portion (112) does not come into contact with the first current collector (130a).

[0084] The first adhesive member (160a) is placed in the space formed by the frame (110) (first electrode receiving portion (111a), second electrode receiving portion (111b) and transition portion (112)) where the first solid electrode (150a) and the second solid electrode (150b) are not placed.

[0085] The second adhesive member (160b) combines the second carbon collector (132b) of the second current collector (130b) with the frame (110). The second adhesive member (160b) seals the space between the second carbon collector (132b) of the second current collector (130b) and the frame (110). The second adhesive member (160b) is laminated between the second carbon collector (132b) of the second current collector (130b) and the frame (110). The second adhesive member (160b) is adhered to the other edge of the frame (110) in the out-of-plane direction. The second adhesive member (160b) is adhered to the edge of the side of the second carbon collector (132b) where the second metal current collector (131b) is not placed. The first adhesive member (160a) can be applied to the second carbon collector (132b) and adhered to the frame (110).

[0086] The second adhesive member (160b) is positioned so that its edge aligns with the second carbon collector (132b) of the second current collector (130b) and the frame (110). The second adhesive member (160b) is positioned on the frame (110) in the outer direction in the in-plane direction than the second solid electrode (150b). The second adhesive member (160b) is positioned on the frame (110) in the outer direction in the in-plane direction than the second electrode receiving portion (111b). The second adhesive member (160b) is positioned on the frame (110) in the outer direction in the in-plane direction than the separator (120).

[0087] The second adhesive member (160b) forms part of the frame (110) and the transition portion (112). The second adhesive member (160b) covers part of the transition portion (112). The second adhesive member (160b) covers the portion of the transition portion (112) that is formed as an in-plane groove at the edge of the frame (110). The second adhesive member (160b) covers the portion of the transition portion (112) that is formed as an out-plane hole at the edge of the frame (110).

[0088] At least a portion of the second adhesive member (160b) is positioned on the frame (110) and on the outer side in the in-plane direction from the transition portion (112). The first liquid electrode or the second liquid electrode flowing through the transition portion (112) comes into contact with the second adhesive member (160b). The second adhesive member (160b) is adhered to the frame (110) and the second current collector (130b) so that the first liquid electrode or the second liquid electrode flowing through the transition portion (112) does not come into contact with the second current collector (130b).

[0089] The second adhesive member (160b) is placed in the space formed by the frame (110) (first electrode receiving portion (111a), second electrode receiving portion (111b) and transition portion (112)) where the first solid electrode (150a) and the second solid electrode (150b) are not placed.

[0090] The first adhesive member (160a) and the second adhesive member (160b) cover each of the ends of the portion formed as a hole in the transition portion (112). One end of the hole in the transition portion (112) is blocked by the first adhesive member (160a), and the other end of the hole in the transition portion (112) is blocked by the second adhesive member (160b). The liquid electrode flowing through the groove of the transition portion (112) does not come into direct contact with the first carbon collector (132a) of the first current collector (130a) by the first adhesive member (160a), and does not come into direct contact with the second carbon collector (132b) of the second current collector (130b) by the second adhesive member (160b).

[0091] The overall configuration of the secondary battery according to the present invention, configured as described above, is as follows.

[0092] A separator (120) is attached to the center of the thickness direction of a rectangular frame (110) having a predetermined thickness. A first current collector (130a) is attached to one side of the out-of-plane direction of the frame (110) by a first adhesive member (160a), and a second current collector (130b) is attached to the other side of the out-of-plane direction by a second adhesive member (160b), thereby forming a first electrode receiving portion (111a) and a second electrode receiving portion (111b). That is, the frame (110) is positioned between the first current collector (130a) and the second current collector (130b), and a separator (120) is positioned within the frame (110).

[0093] A first solid electrode (150a) impregnated with a first liquid electrode is disposed in the first electrode receiving portion (111a), and a second solid electrode (150b) impregnated with a second liquid electrode is disposed in the second electrode receiving portion (111b).

[0094] The first adhesive member (160a) or the second adhesive member (160b) is attached to the edge of the frame (110) and is attached to the edge of the first carbon collector (132a) or the edge of the second carbon collector (132b). The first adhesive member (160a), the second adhesive member (160b), the frame (110), the first carbon collector (132a), and the second carbon collector (132b) are arranged so that their in-plane edges align, and when combined, they form a rectangular shape.

[0095] The first adhesive member (160a) or the second adhesive member (160b) forms a frame (110) and a transition portion (112). In the transition portion (112) on the side of the first electrode receiving portion (111a), the first adhesive member (160a), the first carbon current collector (132a), and the first metal current collector (131a) are sequentially stacked. In the transition portion (112) on the side of the second electrode receiving portion (111b), the second adhesive member (160b), the second carbon current collector (132b), and the second metal current collector (131b) are sequentially stacked.

[0096] During charging and discharging, the first liquid electrode and / or the second liquid electrode flow in the transition section (112), but do not come into direct contact with the first current collector (130a) or the second current collector (130b) by means of the first adhesive member (160a) or the second adhesive member (160b).

[0097] Referring to FIG. 4, the above-described configuration is repeated in an alternating manner to form a module. That is, the first current collector (130a) may be placed between a plurality of frames (110) to which a separator (120) is attached, and the second current collector (130b) may be placed between a plurality of frames (110) to which a separator (120) is attached. In this case, only one first metal current collector (131a) may be placed between two first carbon current collectors (132a), and only one second metal current collector (131b) may be placed between two second carbon current collectors (132b).

[0098] FIG. 5 is a plan view of a part of a secondary battery according to one embodiment of the present invention, FIG. 6 is a front view of a frame according to one embodiment of the present invention, FIG. 7 is a rear view of a frame according to one embodiment of the present invention, FIG. 8 is a drawing showing the flow of a liquid electrode through a transition part of a secondary battery according to one embodiment of the present invention, and FIG. 9 is a 2-2 direction cross-sectional view of the frame shown in FIG. 7.

[0099] A frame (110) according to one embodiment of the present invention comprises a hollow rectangular frame body (119), a separator support member (115) that protrudes inward from the hollow of the frame body (119) and is coupled to a separator (120), and a frame reinforcing member (116) disposed in the hollow portion of the frame body (119) to prevent the frame body (119) from being deformed.

[0100] The frame body (119) is formed in a hollow rectangular shape consisting of four bars. The hollow portion of the frame body (119) forms a first electrode receiving portion (111a) and a second electrode receiving portion (111b). A separator support portion (115) protruding inwardly into the hollow portion of the frame body (119) is formed. A transition portion (112) is formed in the frame body (119).

[0101] A first adhesive member (160a) is attached to one side of the frame body (119) in the out-of-plane direction, and a second adhesive member (160b) is attached to the other side in the out-of-plane direction. One side of the frame body (119) in the out-of-plane direction is coupled to a first current collector (130a) by the first adhesive member (160a), and the other side in the out-of-plane direction is coupled to a second current collector (130b) by the second adhesive member (160b).

[0102] The separator support (115) is formed in a rectangular shape by protruding inward toward the center in the in-plane direction from the hollow portion of the frame body (119). Referring to FIG. 3, the separator support (115) is positioned at the center in the thickness direction of the frame body (119).

[0103] The edges of the separator (120) are joined to the separator support (115) so that the separator (120) is stretched taut. It is preferable that the separator support (115) has a minimum width capable of supporting the separator (120). The separator support (115) acts as a rib that reinforces the in-plane direction of the frame body (119), thereby preventing the frame body (119) from deforming in the in-plane direction even if expansion or contraction of the first liquid electrode or the second liquid electrode, gas generation within the liquid electrode, or external impact occurs.

[0104] In order to prevent leakage of the first liquid electrode or the second liquid electrode between the separator support (115) and the separator (120), one side of the separator support (115) is completely bonded to the separator (120). An adhesive having the same components as the first adhesive member (160a) or the second adhesive member (160b) may be laminated between the separator support (115) and the separator (120). The separator support (115) and the separator (120) may be bonded by an adhesive comprising at least one of an acrylate-based adhesive, an acrylate-ester-based adhesive, an acrylate-ethylene-based adhesive, a polycarbonate-based adhesive, a polyethylene-based adhesive, an epoxy-based adhesive, and an isocyanate-based adhesive.

[0105] The separator support (115) is positioned on the inner side in the in-plane direction of the first adhesive member (160a) or the second adhesive member (160b).

[0106] The frame reinforcement (116) is formed to connect one side of the frame body (119) with another side, or to connect one vertex with another vertex. The frame reinforcement (116) connects at least two sides or two vertices across the hollow portion to prevent the square frame body (119) from deforming into a rhombus or a circle. In this embodiment, the frame reinforcement (116) is formed in a cross shape connecting two opposing sides of the frame body (119).

[0107] The frame reinforcing member (116) is positioned on the inner side in the in-plane direction of the first adhesive member (160a) or the second adhesive member (160b).

[0108] Referring to FIG. 5, the first adhesive member (160a) or the second adhesive member (160b) is not adhered to the separator support member (115) and the frame reinforcement member (116). The first adhesive member (160a) is adhered to one side of the frame body (119) in the out-of-plane direction, and the second adhesive member (160b) is adhered to the other side of the frame body (119) in the out-of-plane direction. The first adhesive member (160a) covers the portion formed on one side of the frame body (119) in the out-of-plane direction of the transition member (112), and the second adhesive member (160b) covers the portion formed on the other side of the frame body (119) in the out-of-plane direction of the transition member (112).

[0109] The transition section (112) is connected to the first electrode receiving section (111a) and the second electrode receiving section (111b) so that the imbalance between the amount of the first liquid electrode and the amount of the second liquid electrode caused by crossover during charging or discharging is resolved, and the first liquid electrode or the second liquid electrode flows inside during charging or discharging.

[0110] It is preferable that the transition section (112) be formed to be long and thin so as to have a volume that can flow by half the difference between the amount of the first liquid electrode and the amount of the second liquid electrode due to the crossover, while having a resistance value of a certain level or higher.

[0111] The transition portion (112) is formed in a part of the frame body (119) surrounding the first solid electrode (150a) or the second solid electrode (150b) and is positioned on a part of the perimeter of the first solid electrode (150a) or the second solid electrode (150b).

[0112] The transition portion (112) is positioned on the outer side in the in-plane direction relative to the separator support portion (115). The transition portion (112) is positioned on the inner side in the in-plane direction relative to the first adhesive member (160a) or the second adhesive member (160b). The transition portion (112) is covered by the first adhesive member (160a) or the second adhesive member (160b).

[0113] Referring to FIGS. 6 and 7, the transition portion (112) includes a transition hole (1121) formed as an out-of-plane hole in the frame (110), a first transition line (1123a) communicating the transition hole (1121) and the first electrode receiving portion (111a), and a second transition line (1123b) communicating the transition hole (1121) and the second electrode receiving portion (111b).

[0114] The transition hole (1121) is formed as an out-of-plane hole in the frame (110). The transition hole (1121) is positioned in a direction penetrating the plane formed by the separator (120). The transition hole (1121) may be orthogonal to the plane formed by the separator (120). The transition hole (1121) may be orthogonal to the first transition line (1123a). The transition hole (1121) may be orthogonal to the second transition line (1123b). The transition hole (1121) formed out-of-plane is bent inward at one end to connect with the first transition line and bent inward at the other end to connect with the second transition line. The transition hole (1121) connects the first transition line (1123a) and the second transition line (1123b).

[0115] A transition hole (1121) is formed at one corner of a rectangular frame body (119). One end of the transition hole (1121) is covered by a first adhesive member (160a) and the other end is covered by a second adhesive member (160b). The center of the transition hole (1121) in the out-of-plane direction (length direction) is connected to the injection port (114) described later.

[0116] Referring to FIG. 6, the first transition line (1123a) is formed as a groove on one side of the frame body (119) in the out-of-plane direction. The first transition line (1123a) is formed along the frame body (119) with the in-plane direction as the longitudinal direction. The first transition line (1123a) is bent at least twice. The first transition line (1123a) is bent four times along the shape of the frame body (119) from the transition hole (1121) to form a shape close to a rectangle, and then connected to the first electrode receiving portion (111a). The first transition line (1123a) is formed on all four bars of the frame body (119). The first transition line (1123a) has a first transition line (1125a) that is open to be connected to the first electrode receiving portion (111a). The first transition line (1123a) is covered by the first adhesive member (160a).

[0117] Referring to FIG. 7, the second transition line (1123b) is formed as a groove on the other side of the frame body (119) in the out-of-plane direction. The second transition line (1123b) is formed along the frame body (119) with the in-plane direction as the longitudinal direction. The second transition line (1123b) is formed in a straight line along one bar of the frame body (119) from the transition hole (1121) and then connected to the second electrode receiving portion (111b). The second transition line (1123b) has a second transition line (1125b) that is open to be connected to the second electrode receiving portion (111b). The second transition line (1123b) is covered by a second adhesive member (160b).

[0118] The second transition line (1123b) is formed so as not to overlap with the first transition line (1123a) when projected out of the plane, so that the first transition line (1123a) and the second transition line (1123b) form a closed curve when projected out of the plane. The first transition line (1123a) and the second transition line (1123b) form a rectangle when projected out of the plane. That is, the first transition line (1123a) and the second transition line (1123b) are formed along the entire length direction (in-plane direction) of the frame body (119).

[0119] The second transition line (1125b) is formed to overlap with the first transition line (1125a) when projected out of plane. The first transition line (1125a) and the second transition line (1125b) are formed in the same direction and are arranged parallel to each other.

[0120] The first adhesive member (160a) covers the first transition line (1123a), and the second adhesive member (160b) covers the second transition line (1123b). The first adhesive member (160a) covers one end of the transition hole (1121), and the second adhesive member (160b) covers the other end of the transition hole (1121).

[0121] Referring to FIG. 9, a secondary battery according to one embodiment of the present invention further includes an injection port (114) formed in a frame (110) into which a first liquid electrode or a second liquid electrode is injected.

[0122] An inlet port (114) is formed in the frame (110) so that a liquid electrode is injected from the outside and flows into the first electrode receiving portion (111a) and the second electrode receiving portion (111b). The inlet port (114) is formed so that one end of the frame (110) is open to the outside. The inlet port (114) is formed so that the first liquid electrode is injected into the first electrode receiving portion (111a) and the second liquid electrode is injected into the second electrode receiving portion (111b). When a liquid electrode is injected from the outside through the inlet port (114), it is received into the first electrode receiving portion (111a) and the second electrode receiving portion (111b). The liquid electrode injected into the first electrode receiving portion (111a) through the injection port (114) becomes the first liquid electrode, and the liquid electrode injected into the second electrode receiving portion (114) through the injection port (114) becomes the second liquid electrode.

[0123] The injection port (114) is formed as a hole in the in-plane direction of the frame (110). The injection port (114) is formed longitudinally at one end of a bar of the frame body (119). The injection port (114) is formed at one corner of the rectangular frame body (119). The injection port (114) is formed in the center of the frame body (119) in the thickness direction.

[0124] The injection port (114) is positioned on the plane formed by the separator (120). The injection port (114) is positioned at the boundary between the first electrode receiving portion (111a) and the second electrode receiving portion (111b). The injection port (114) is positioned between the first adhesive member (160a) and the second adhesive member (160b).

[0125] The injection port (114) is formed such that its in-plane length is longer than the thickness in the thickness direction of the frame (110). The injection port (114) is formed to taper in the longitudinal direction.

[0126] It is preferable that the injection port (114) be connected perpendicularly to the transition hole (1121) of the transition section (112) and branch into a T-shape. The injection port (114) branches into the transition section (112) and is connected to the first electrode receiving section (111a) and the second electrode receiving section (111b). The injection port (114) is connected to the center of the out-of-plane direction (length direction) of the transition hole (1121). The flow area of ​​the injection port (114) at any point is larger than the maximum flow area of ​​the transition section (112). The flow area of ​​the injection port (114) decreases as it moves from one end to the other end, which is connected to the transition hole (1121) of the transition section (112). The injection port (114) is positioned between the first transition line (1123a) and the second transition line (1123b). The injection port (114) is formed in the same direction as the first transition drain (1125a) and the second transition drain (1125b) and is arranged parallel to them. According to an embodiment, the injection port (114) may be arranged in a direction perpendicular to the first transition drain (1125a) or the second transition drain (1125b).

[0127] The injection port (114) is closed after the amount of liquid electrode that causes the first half-reaction and the second half-reaction is injected into the first electrode receiving portion (111a) and the second electrode receiving portion (111b).

[0128] A secondary battery according to one embodiment of the present invention includes a sealing member (113) that blocks an inlet (114).

[0129] At least a portion of the sealing member (113) is inserted into the injection port (114). In this embodiment, the sealing member (113) is in the shape of a rod and is pressed into the injection port (114) to block the injection port (114). The sealing member (113) may include at least one of an acrylate-based adhesive, an acrylate-ester-based adhesive, an acrylate-ethylene-based adhesive, a polycarbonate-based adhesive, a polyethylene-based adhesive, an epoxy-based adhesive, and an isocyanate-based adhesive. The sealing member (113) may be one of a solvent-type, emulsion-type, hot-melt-type, and liquid-curing adhesive / adhesive, and may be injected into the injection port (114) to seal the injection port (114). The flow area of ​​the injection port (114) decreases from one end blocked by the sealing member (113) to the other end.

[0130] FIG. 10 is a partial cross-sectional view of a secondary battery according to another embodiment of the present invention.

[0131] In this embodiment, a portion of the sealing member (213) is attached to the frame (110) to cover the injection port (114), and another portion is inserted into the injection port (114). The sealing member (213) may be attached to the frame (110) using at least one of an acrylate-based adhesive, an acrylate-ester-based adhesive, an acrylate-ethylene-based adhesive, a polycarbonate-based adhesive, a polyethylene-based adhesive, an epoxy-based adhesive, or an isocyanate-based adhesive.

[0132] FIG. 11 is a partial cross-sectional view of a secondary battery according to another embodiment of the present invention.

[0133] In this embodiment, the sealing member (313) is formed with a film-type adhesive and adhered to the frame (110). The sealing member (313) includes at least one of an acrylate-based adhesive, an acrylate-ester-based adhesive, an acrylate-ethylene-based adhesive, a polycarbonate-based adhesive, a polyethylene-based adhesive, an epoxy-based adhesive, and an isocyanate-based adhesive.

[0134] Although preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the specific embodiments described above. Various modifications are possible by those skilled in the art without departing from the essence of the invention as claimed in the patent claims, and such modifications should not be understood individually from the technical spirit or perspective of the present invention. Explanation of the symbols

[0135] 110: Frame 111a: First electrode receiving part 111b: Second electrode receiving portion 112: Transition portion 113: Sealing member 114: Inlet 115: Separator support 120: Separator 130a: The entire first house 130b: The entire second house 131a: First metal current collector 131b: Second metal current collector 132a: 1st carbon collector 132b: 2nd carbon collector 150a: First solid electrode 150b: Second solid electrode 160a: First adhesive member 160b: Second adhesive member

Claims

Claim 1 A first current collector; a second current collector spaced apart from the first current collector; a separator spaced between the first current collector and the second current collector; a frame forming a first electrode receiving portion between the first current collector and the separator and a second electrode receiving portion between the second current collector and the separator; a first adhesive member connecting the first current collector and the frame; and a second adhesive member connecting the second current collector and the frame. A secondary battery comprising a first electrode receiving portion and a second electrode receiving portion communicating with each other, wherein at least a portion of the transition portion is formed by the first adhesive member and the frame or the second adhesive member and the frame, and a portion of the transition portion is formed as a groove at the edge of the frame, and the groove of the transition portion is formed by being recessed outward from the frame and having an inward direction as the longitudinal direction, and the first adhesive member and the second adhesive member cover the portion formed as the groove of the transition portion. Claim 2 A secondary battery according to claim 1, wherein the first adhesive member seals between the first current collector and the frame, and the second adhesive member seals between the second current collector and the frame. Claim 3 A secondary battery according to claim 1, wherein the first adhesive member is laminated between the first current collector and the frame, and the second adhesive member is laminated between the second current collector and the frame. Claim 4 A secondary battery according to claim 1, wherein each of the first adhesive member and the second adhesive member comprises at least one of an acrylate-based adhesive, an acrylate-ester-based adhesive, an acrylate-ethylene-based adhesive, a polycarbonate-based adhesive, a polyethylene-based adhesive, an epoxy-based adhesive, and an isocyanate-based adhesive. Claim 5 A secondary battery according to claim 1, wherein each of the first adhesive member and the second adhesive member is one of a solvent-type adhesive, an emulsion-type adhesive, a hot-melt-type adhesive, a liquid-curing-type adhesive, and a film-type adhesive, or a combination thereof. Claim 6 A secondary battery according to claim 1, wherein the first adhesive member is applied to the first current collector and adhered to the frame, and the second adhesive member is applied to the second current collector and adhered to the frame. Claim 7 In claim 1, the secondary battery wherein each of the first adhesive member and the second adhesive member is formed as a closed curve. Claim 8 A secondary battery according to claim 1, wherein the frame is formed as a hollow rectangle, and each of the first adhesive member and the second adhesive member is formed in a strip shape and arranged so that the edge matches the edge of the frame. Claim 9 A secondary battery according to claim 1, wherein the first adhesive member is adhered to one side of the out-of-plane direction of the frame, and the second adhesive member is adhered to the other side of the out-of-plane direction of the frame. Claim 10 A secondary battery according to claim 1, wherein the frame comprises a hollow frame body; and a separator support member protruding inward from the hollow of the frame body and coupled to the separator, wherein the first adhesive member is adhered to one side of the frame body in an out-of-plane direction and the second adhesive member is adhered to the other side of the frame body in an out-of-plane direction. Claim 11 A secondary battery according to claim 1, wherein the frame comprises a hollow frame body; and a separator support member protruding inward from the hollow of the frame body and coupled to the separator, and each of the first adhesive member and the second adhesive member is disposed on the outer side in the in-plane direction of the frame than the separator support member. Claim 12 A secondary battery according to claim 1, further comprising: a first liquid electrode received in the first electrode receiving portion and in which a first half-reaction occurs; a second liquid electrode received in the second electrode receiving portion and in which a second half-reaction occurs; a first solid electrode disposed in the first electrode receiving portion and in which the first liquid electrode is impregnated; and a second solid electrode disposed in the second electrode receiving portion and in which the second liquid electrode is impregnated, wherein the first adhesive member is disposed on the outer side in the in-plane direction relative to the first solid electrode in the frame, and the second adhesive member is disposed on the outer side in the in-plane direction relative to the second solid electrode in the frame. Claim 13 In claim 1, the first adhesive member and the second adhesive member are each disposed on the outer side in the in-plane direction of the separator in the frame, a secondary battery. Claim 14 In claim 1, the transition portion is a secondary battery disposed between the first adhesive member and the second adhesive member. Claim 15 A secondary battery according to claim 1, wherein the transition portion comprises: a transition hole formed as an out-of-plane hole in the frame; a first transition line communicating the transition hole and the first electrode receiving portion; and a second transition line communicating the transition hole and the second electrode receiving portion, wherein the first transition line and the second transition line are portions formed by the groove of the transition portion, and the first adhesive member covers the first transition line and the second adhesive member covers the second transition line. Claim 16 A secondary battery according to claim 1, wherein the first adhesive member is disposed on the outer side in the in-plane direction of the first electrode receiving portion in the frame, and the second adhesive member is disposed on the outer side in the in-plane direction of the second electrode receiving portion in the frame. Claim 17 A first current collector; a second current collector spaced apart from the first current collector; a separator spaced between the first current collector and the second current collector; a frame forming a first electrode receiving portion between the first current collector and the separator and a second electrode receiving portion between the second current collector and the separator; a first adhesive member connecting the first current collector and the frame; and a second adhesive member connecting the second current collector and the frame. A secondary battery comprising a first electrode receiving portion and a second electrode receiving portion communicating with each other, wherein at least a portion of the first adhesive member and the second adhesive member are disposed on the outer side of the frame in the in-plane direction relative to the transition portion, the transition portion is formed as a groove on the edge of the frame, the groove of the transition portion is recessed outward from the frame in the in-plane direction and formed with the in-plane direction as the longitudinal direction, and the first adhesive member and the second adhesive member cover the portion formed as the groove of the transition portion. Claim 18 A first liquid electrode where a first half-reaction occurs; a second liquid electrode where a second half-reaction occurs; a separator disposed between the first liquid electrode and the second liquid electrode; a frame supporting the separator; and a first current collector electrically connected to the first liquid electrode; a second current collector electrically connected to the second liquid electrode; a first adhesive member connecting the first current collector and the frame; and a second adhesive member connecting the second current collector and the frame. A secondary battery comprising a first liquid electrode and / or a second liquid electrode flowing through a transition portion, wherein the first liquid electrode and / or the second liquid electrode flowing through the transition portion are in contact with the first adhesive member and / or the second adhesive member, wherein a portion of the transition portion is formed as a groove at the edge of the frame, and the groove of the transition portion is recessed outward from the frame and formed inward from the frame as the longitudinal direction, and the first adhesive member and the second adhesive member cover the portion formed as the groove of the transition portion. Claim 19 A first liquid electrode where a first half-reaction occurs; a second liquid electrode where a second half-reaction occurs; a separator disposed between the first liquid electrode and the second liquid electrode; and a frame supporting the separator. A secondary battery comprising: a first current collector electrically connected to the first liquid electrode; a second current collector electrically connected to the second liquid electrode; a transition portion through which the first liquid electrode and / or the second liquid electrode flow; a first adhesive member that adheres to the frame and the first current collector so that the first liquid electrode or the second liquid electrode flowing through the transition portion does not come into contact with the first current collector; and a second adhesive member that adheres to the frame and the second current collector so that the first liquid electrode or the second liquid electrode flowing through the transition portion does not come into contact with the first current collector, wherein a portion of the transition portion is formed as a groove on the edge of the frame, and the groove of the transition portion is formed by being recessed outward from the frame and having the inward direction as the longitudinal direction, and the first adhesive member and the second adhesive member cover the portion formed as the groove of the transition portion. Claim 20 delete

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