Battery

Abstract

A battery may include: a first current collector; a second current collector spaced apart from the first current collector; a separation membrane disposed between the first current collector and the second current collector; a frame forming a first electrode reservoir between the first current collector and the separation membrane and a second electrode reservoir between the second current collector and the separation membrane; a first adhesive member providing bonding between the first current collector and the frame; a second adhesive member providing bonding between the second current collector and the frame; and an inter-electrode communication member configured to allow the first electrode reservoir and the second electrode reservoir to be in fluid communication with each other. At least a portion of the inter-electrode communication member is enclosed by the first adhesive member and the frame or by the second adhesive member and the frame.

Description

Technical Field

[0001] The present disclosure relates to a battery, and more particularly, to a battery in which metal ions dissolved in an electrolyte are oxidized and reduced to charge or discharge the battery. Background Art

[0002] A redox flow battery (RFB) is a system that charges or discharges by oxidizing and reducing the active material in the electrolyte, and the redox flow battery operates by continuously circulating the electrolyte inside the stack using a fluid pump, wherein the actual electrochemical reaction occurs in the stack. Although this redox flow battery has the advantages of long life, high output and large capacity, due to the tank for storing the electrolyte and the fluid pump for flowing the electrolyte, there are problems with large system volume and low design flexibility. In order to solve these problems, the inventors of the present invention have developed a redox battery without an electrolyte tank and a fluid pump. However, this new redox flow battery still has problems with electrolyte leakage between the current collector and the frame, electrochemical corrosion of the current collector, deformation of the frame, high stress concentration in the components of the battery, and low battery productivity. Summary of the Invention

[0003] Technical issues

[0004] In order to overcome the above-mentioned shortcomings of the prior art, an object of the present disclosure is to provide a battery capable of minimizing its volume.

[0005] In order to overcome the above-mentioned shortcomings of the prior art, another object of the present disclosure is to provide a battery that can effectively prevent leakage of electrolyte between a current collector and a frame.

[0006] In order to overcome the above-mentioned shortcomings of the prior art, another object of the present disclosure is to provide a battery capable of simplifying its manufacturing process.

[0007] Technical Solution

[0008] In one aspect, a battery according to an embodiment may include: a first current collector; a second current collector spaced apart from the first current collector; a separator disposed between the first current collector and the second current collector; a frame forming a first electrode reservoir between the first current collector and the separator, and forming a second electrode reservoir between the second current collector and the separator; a first adhesive member providing a bond between the first current collector and the frame; a second adhesive member providing a bond between the second current collector and the frame; and an inter-electrode communication member configured to allow fluid communication between the first electrode reservoir and the second electrode reservoir. At least a portion of the inter-electrode communication member may be enclosed by the first adhesive member and the frame, or by the second adhesive member and the frame.

[0009] In another aspect, a battery according to an embodiment may include: a first current collector; a second current collector spaced apart from the first current collector; a separator disposed between the first current collector and the second current collector; a frame forming a first electrode reservoir between the first current collector and the separator, and forming a second electrode reservoir between the second current collector and the separator; a first adhesive member providing a bond between the first current collector and the frame; a second adhesive member providing a bond between the second current collector and the frame; and an inter-electrode communication member allowing the first and second electrode reservoirs to communicate with each other. At least a portion of the first and second adhesive members may be disposed further toward an outer boundary of the frame in an in-plane direction of the frame than the inter-electrode communication member.

[0010] In another aspect, a battery according to an embodiment may include: a first liquid electrode for performing a first half-reaction; a second liquid electrode for performing a second half-reaction; a separator disposed between the first liquid electrode and the second liquid electrode; a frame for 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 bonding member providing a bond between the first current collector and the frame; a second bonding member providing a bond between the second current collector and the frame; and an inter-electrode connecting member through which the first liquid electrode and / or the second liquid electrode flow. The first liquid electrode and / or the second liquid electrode flowing in the inter-electrode connecting member may contact the first bonding member and / or the second bonding member.

[0011] In another aspect, a battery according to an embodiment may include: a first liquid electrode for performing a first half reaction; a second electrode for performing a second half reaction; a separator disposed between the first liquid electrode and the second liquid electrode; a frame for 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; an inter-electrode connecting component in which the first liquid electrode and / or the second liquid electrode flows; a first bonding member providing a bond between the frame and the first current collector to prevent the first liquid electrode or the second liquid electrode flowing in the inter-electrode connecting component from contacting the first current collector; and a second bonding member providing a bond between the frame and the second current collector to prevent the first liquid electrode or the second liquid electrode flowing in the inter-electrode connecting component from contacting the second current collector.

[0012] In another aspect, a battery according to an embodiment may include: a first liquid electrode for performing a first half-reaction; a second electrode for performing a second half-reaction; a separator disposed between the first liquid electrode and the second liquid electrode; a frame configured to support 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 providing a bond between the first current collector and the frame; and a second adhesive member providing a bond between the second current collector and the frame. The first and second adhesive members may be disposed in a portion of the space defined by the frame where the first and second solid electrodes are not disposed.

[0013] Specific details of other embodiments are described in the Detailed Description and Drawings sections.

[0014] Beneficial effects

[0015] The battery according to the present disclosure may have one or more of the following effects.

[0016] First, by using a bonding member, the frame and the current collector may be bonded, thereby preventing leakage of the liquid electrode.

[0017] Second, the adhesive member may be disposed between the inter-electrode communication part and the current collector, thereby preventing electrochemical corrosion of the current collector due to current short circuit when the liquid electrode flowing in the inter-electrode communication part contacts the current collector.

[0018] Third, the bonding member may combine the peripheral portion of the frame and the peripheral portion of the current collector in a closed curve, thereby providing structural strength and preventing deformation of the frame and leakage of the liquid electrode.

[0019] Fourth, the inter-electrode communication parts can be formed relatively uniformly in the frame, thereby preventing stress concentration in specific parts and allowing the frame to be manufactured thin to a predetermined width.

[0020] The specific effects are described together with the above-mentioned effects in the detailed description section.

[0021] The various aspects of the present disclosure are not limited to the above aspects, and other aspects and advantages not mentioned above will be clearly understood from the following description, and these other aspects and advantages will be more clearly understood from the embodiments described herein. In addition, the various aspects and advantages of the present disclosure can be achieved through the devices described in the appended claims and their combinations. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1is an exploded perspective view of an example of a battery according to an embodiment;

[0023] Figure 2 is a perspective view of an example of a battery according to an embodiment;

[0024] Figure 3 yes Figure 2 An example of a cross-sectional view of the battery shown along direction 3-3;

[0025] Figure 4 A perspective view of an example of a battery module according to an embodiment;

[0026] Figure 5 is a plan view of an example of a battery according to an embodiment;

[0027] Figure 6 is a front view of an example of a frame according to an embodiment;

[0028] Figure 7 is a rear view of an example of a frame according to an embodiment;

[0029] Figure 8 is a view showing an example of the flow of a liquid electrode through an inter-electrode communication member of a battery according to an embodiment;

[0030] Figure 9 yes Figure 7 An example of a cross-sectional view of the frame shown along direction 9-9;

[0031] Figure 10 is a cross-sectional view partially illustrating an example of a battery according to another embodiment; and

[0032] Figure 11 is a cross-sectional view partially showing an example of a battery according to still another embodiment. DETAILED DESCRIPTION

[0033] Although redox flow batteries have the advantages of long life, high output, and large capacity, they have problems due to space limitations and design difficulties, which are caused by the tanks for storing electrolytes and the fluid pumps for flowing electrolytes. Therefore, the embodiments of the present disclosure realize redox batteries that eliminate the electrolyte tanks and fluid pumps, but the redox batteries have problems with low energy density and large volume. In order to overcome the above-mentioned shortcomings, one object of the present disclosure is to provide a battery that can minimize the volume of the battery.

[0034] The above aspects, features, and advantages are described in detail below with reference to the accompanying drawings so that a person skilled in the art can easily implement the technical spirit of the present disclosure. In the present disclosure, if it is considered that a detailed description of a known technology related to the present disclosure would make the key points of the present disclosure unnecessarily obscure, the detailed description of the known technology related to the present disclosure will be omitted. The preferred embodiments according to the present disclosure will be described in detail below with reference to the accompanying drawings. In the accompanying drawings, the same reference numerals may represent the same or similar components.

[0035] The terms "first," "second," and the like are used herein only to distinguish components from one another. Therefore, the components should not be limited by the terms. In addition, unless otherwise stated, a first component may be a second component.

[0036] Throughout the disclosure, unless explicitly stated otherwise, each component may be provided as a single component or as a plurality of components.

[0037] Hereinafter, the expression “a component is provided or disposed in an upper portion or a lower portion” may mean that the component is provided or disposed in contact with an upper surface or a lower surface. The present disclosure is not intended to limit the provision of other elements between components and on or under components.

[0038] It should be understood that when an element is referred to as being “connected” to another element, the element may be directly connected to the other element or intervening elements may be present. In contrast, when an element is referred to as being “directly connected” to another element, there are no intervening elements.

[0039] A singular expression may include a plural expression unless the singular expression has a clearly different meaning in the context. Terms such as "including" or "having" are used herein, and it should be understood that they are intended to indicate the presence of several components, functions, or steps disclosed in the specification, and it should also be understood that more or fewer components, functions, or steps may also be utilized.

[0040] Throughout the disclosure, unless stated otherwise, the term "A and / or B" as used herein may mean A, B, or A and B, and the term "C to D" may mean greater than or equal to C and less than or equal to D.

[0041] Hereinafter, a description will be made with reference to the accompanying drawings for describing a battery (eg, a secondary battery) according to an embodiment of the present disclosure.

[0042] Figure 1 is an exploded perspective view of a battery according to an embodiment. Figure 2 is a perspective view of a battery according to an embodiment. Figure 3 yes Figure 2 The battery is shown in a cross-sectional view along the 3-3 direction. Figure 4is a perspective view of a battery module according to an embodiment.

[0043] A battery according to some embodiments may include: 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 defining a first electrode reservoir 111a and a second electrode reservoir 111b; a first liquid electrode stored in the first electrode reservoir 111a and configured to perform a first half reaction; a second liquid electrode stored in the second electrode reservoir 111b and configured to perform a second half reaction; a first solid electrode 150a disposed in the first electrode reservoir 111a and impregnated with the first liquid electrode ; a second solid electrode 150b, disposed in the second electrode reservoir 111b and impregnated with the second liquid electrode; a first bonding member 160a, which provides a bond between the first current collector 130a and the frame 110 (e.g., it directly or indirectly bonds the first current collector 130a and the frame 110 to each other); a second bonding member 160b, which provides a bond between the second current collector 130b and the frame 110 (e.g., it directly or indirectly bonds the second current collector 130b and the frame 110 to each other); and an inter-electrode communication component 112 for fluid communication with the first electrode reservoir 111a and the second electrode reservoir 111b.

[0044] The first liquid electrode is an electrolyte in which an anodic redox couple is dissolved. The anodic redox couple can be implemented as a material including 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, the anodic redox couple is V 2+ / V 3+ Redox couple. The first liquid electrode can be an acidic aqueous solution that conducts current through ionization, and preferably contains sulfuric acid. In this embodiment, the first liquid electrode can be made by dissolving vanadyl sulfate (VOSO4) or vanadium pentoxide (V2O5) in a sulfuric acid (H2SO4) solution.

[0045] The first liquid electrode performs a first half reaction. The first half reaction is as follows, and "→" represents the discharge reaction direction, while "←" represents the charge reaction direction.

[0046] V 2+ ←→V 3+ +e -

[0047] During discharge, divalent vanadium ions are oxidized to trivalent vanadium ions, and during charge, trivalent vanadium ions are reduced to divalent vanadium ions.

[0048] The first liquid electrode may be surrounded by the frame 110, the first current collector 130a, and the separator 120. The first adhesive member 160a prevents the first liquid electrode from flowing out in a plane direction between the first current collector 130a and the frame 110. Hereinafter, the in-plane direction refers to a direction parallel to the plane formed by the separator 120. The first liquid electrode may be stored in the first electrode reservoir 111a. The first liquid electrode may be impregnated into the first solid electrode 150a.

[0049] The first liquid electrode can be electrically connected to the first current collector 130a so that electrons can move to the first current collector 130a during discharge, and the electrons of the first current collector 130a can move to the first liquid electrode. The first liquid electrode can come into contact with the separator 120 so that hydrogen cations (protons) can move through the separator 120.

[0050] The second liquid electrode is an electrolyte in which a cathode redox couple is dissolved. The cathode redox couple can be implemented as a material including 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, the cathode redox couple is V 4+ / V 5+ The second liquid electrode can be an acidic aqueous solution that conducts current through ionization, and preferably includes sulfuric acid. In this embodiment, the second liquid electrode can be made by dissolving vanadyl sulfate (VOSO4) or vanadium pentoxide (V2O5) in a sulfuric acid (H2SO4) solution.

[0051] The second liquid electrode performs the second half reaction. The second half reaction is as follows, and "→" represents the discharge reaction direction, while "←" represents the charge reaction direction.

[0052] V 5+ +e - ←→V 4+

[0053] During discharge, pentavalent vanadium ions are reduced to tetravalent vanadium ions, and during charge, tetravalent vanadium ions are oxidized to pentavalent vanadium ions.

[0054] The second liquid electrode may be surrounded by the frame 110, the second current collector 130b, and the separator 120. The second adhesive member 160b prevents the second liquid electrode from flowing out in a planar direction between the second current collector 130b and the frame 110. The second liquid electrode may be stored in the second electrode reservoir 111b. The second liquid electrode may be impregnated into the second solid electrode 150b.

[0055] The second liquid electrode can be electrically connected to the second current collector 130b so that electrons can move to the second current collector 130b during charging, and the electrons of the second current collector 130b can move to the second liquid electrode. The second liquid electrode can come into contact with the separator 120 so that hydrogen cations (protons) can move through the separator 120.

[0056] As described above, 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 are collectively referred to as liquid electrodes.

[0057] In some embodiments, the frame 110 is formed into a square with a hollow interior area. According to other embodiments, the frame 110 can be formed into a rhombus, a circle, a triangle, or a polygon such as a pentagon or other shape. The frame can have a predetermined thickness along the out-of-plane direction to accommodate the first electrode reservoir 111a and the second electrode reservoir 111b. Hereinafter, the "out-of-plane" direction relative to the structure refers to the direction of the in-plane direction through the structure (wherein the "in-plane direction" is a direction parallel to the plane formed by structures such as the separator 120). The out-of-plane direction can include a direction that penetrates the thickness, but is generally not limited to a direction perpendicular to the in-plane direction.

[0058] In some embodiments, the frame 110 has a peripheral portion aligned with a peripheral portion of the first carbon current collector 132 a of the first current collector 130 a and a peripheral portion of the second carbon current collector 132 b of the second current collector 130 b .

[0059] The first current collector 130a may be disposed on one side of the frame 110, while the second current collector 130b may be disposed on the other side of the frame 110 in the out-of-plane direction of the frame 110. More specifically, the first current collector 130a may be disposed in one end surface of the frame 110, while the second current collector 130b may be disposed in the other end surface of the frame 110, wherein the two end surfaces are opposite to each other in the out-of-plane direction. The hollow interior area of the frame 110 may be enclosed by the first current collector 130a and the second current collector 130b. The frame 110 may be disposed between the first current collector 130a and the second current collector 130b and may prevent the first liquid electrode and the second liquid electrode from flowing in the in-plane direction (e.g., leaking). The frame 110 may be coupled to the first current collector 130a by a first adhesive member 160a and to the second current collector 130b by a second adhesive member 160b.

[0060] The separation film 120 may be disposed in the hollow interior region of the frame 110. The hollow interior region of the frame 110 may be partitioned into two spaces by the separation film 120. The frame 110 may be coupled to the separation film 120 by an adhesive member, which may be made of the same material as the first adhesive member 160a or the second adhesive member 160b.

[0061] The frame 110 may receive and form a first electrode reservoir 111 a between the first current collector 130 a and the separation film 120 , and may receive and form a second electrode reservoir 111 b between the second current collector 130 b and the separation film 120 .

[0062] The frame 110 can store the first liquid electrode and the second liquid electrode. The first solid electrode 150a and the second solid electrode 150b can be disposed inside the hollow interior area of the frame 110. Figure 3 , the first adhesive member 160a may be adhered to a peripheral portion of the frame facing the first current collector 130a, and the second adhesive member 160b may be adhered to another peripheral portion of the frame 110 facing the second current collector 130b. In other words, the first adhesive member 160a may be adhered to one end surface of the frame 110 in the out-of-plane direction, and the second adhesive member 160b may be adhered to the other end surface of the frame 110 in the out-of-plane direction.

[0063] The frame 110 may be enclosed by the first adhesive member 160 a or the second adhesive member 160 b and form the inter-electrode communication part 112 .

[0064] The inter-electrode communication component 112 can allow the first electrode reservoir 111a and the second electrode reservoir 111b to be fluidically connected to each other. The first liquid electrode and / or the second liquid electrode can flow in the inter-electrode communication component 112. In some embodiments, the inter-electrode communication component 112 may include a groove portion and a through-hole portion. The groove portion can be formed along the peripheral portion of the frame 110. The groove portion of the inter-electrode communication component 112 can be recessed into the frame 110 in the out-of-plane direction, wherein the longitudinal direction of the groove is along the in-plane direction. The through-hole portion of the inter-electrode communication component 112 can achieve fluid communication between the first electrode reservoir 111a and the second electrode reservoir 111b. For example, the through-hole portion of the inter-electrode communication component 112 can penetrate the frame 110 in the out-of-plane direction, wherein the longitudinal direction of the through-hole portion is along the out-of-plane direction.

[0065] At least a portion of the inter-electrode communication component 112 may be enclosed and formed by the first adhesive member 160a or the second adhesive member 160b and the frame 110. Generally, the inter-electrode communication component 112 may be disposed within the frame between the first adhesive member 160a and the second adhesive member 160b. For example, the inter-electrode communication component 112 may be enclosed by the first adhesive member 160a on the side of the frame 110 facing the first current collector 130a, and / or may be enclosed by the second adhesive member 160b on the other side of the frame 110 facing the second current collector 130b. In some embodiments, the first liquid electrode and / or the second liquid electrode flowing within the inter-electrode communication component 112 may contact the first adhesive member 160a and / or the second adhesive member 160b.

[0066] In addition to adhesively bonding the first current collector 130 a / the second current collector 130 b to the frame 110 , the first and second adhesive members 160 a and 160 b may also perform the functions of preventing leakage of the liquid electrode between the frame 110 and the first and second current collectors 130 a / 130 b and electrically insulating the first and second current collectors 130 a / 130 b from the liquid electrode located in the inter-electrode communication part 112 .

[0067] Will refer to it later Figures 6 to 9 The inter-electrode communication member 112 will be described in detail.

[0068] The separation membrane 120 may be provided on the frame 110 (e.g., in the hollow inner region of the frame 110) to separate the first liquid electrode and the second liquid electrode from each other and may allow hydrogen cations (protons) to move between the first liquid electrode and the second liquid electrode. Figure 3 As shown, the separation film 120 may be provided inside the frame 110 at the center of the frame 110 in the thickness direction to separate the first electrode reservoir 111 a from the second electrode reservoir 111 b .

[0069] The separator 120 may be disposed between the first liquid electrode and the second liquid electrode. The separator 120 may be disposed between the first current collector 130a and the second current collector 130b. The separator 120 may be disposed closer to the interior of the frame 110 (in the in-plane direction) than the first adhesive member 160a or the second adhesive member 160b. The outer periphery of the separator 120 may be bonded to the frame 110.

[0070] During discharge, the hydrogen cations pass through the separator 120 and move from the first liquid electrode to the second liquid electrode. During charge, the hydrogen cations pass through the separator 120 and move from the second liquid electrode to the first liquid electrode.

[0071] The separator 120 may include a perfluorinated ionomer, a partially fluorinated polymer, and a non-fluorinated hydrocarbon. NEOSEPTA- or Gore Form or include NEOSEPTA- or Gore

[0072] The separator 120 prevents the first and second liquid electrodes from mixing with each other, but during charging or discharging, the vanadium ions and water contained in the first and second liquid electrodes may penetrate the separator, which means that a 'crossover phenomenon' may occur. As a result, an imbalance occurs in the amount of the first and second liquid electrodes, which affects the performance and life of the battery. If a liquid electrode storage tank and pump are provided as in a conventional redox secondary battery, this imbalance in the liquid electrodes can be resolved. However, when only a small amount of liquid electrodes is present inside the battery as in the present disclosure, even a small imbalance may affect the performance and life of the battery. The inter-electrode communication component 112 can be configured to resolve the imbalance caused by this crossover and can allow the first or second liquid electrode with an increased volume to move to the first or second liquid electrode with a reduced volume through the inter-electrode communication component. In other words, the inter-electrode communication component 112 acts as a buffer space to absorb the imbalance in the volume of the first and second liquid electrodes.

[0073] The first current collector 130a may be disposed on one side of the frame 110 to form a first electrode reservoir 111a together with the frame 110 and the separator 120. The first current collector 130a may be parallel to and spaced apart from the second current collector 130b. The first current collector 130a may be bonded to a first bonding member 160a, which is bonded to the frame 110. The first current collector 130a may be coupled to the frame 110 via the first bonding member 160a. For example, the first bonding member 160a may be applied or bonded to the outer peripheral portion of the first current collector 130a and / or the outer peripheral region of the frame 110 to bond the first current collector 130a and the frame 110 together.

[0074] Since the first current collector 130a has the first bonding member 160a bonded thereto, it may not directly contact the first liquid electrode or the second liquid electrode flowing in the inter-electrode communication part 112. The first current collector 130a may be electrically connected to the first liquid electrode, and electrons may move, so that current may flow during charge and discharge.

[0075] like Figure 4 As shown, in some embodiments, a plurality of cells may be connected to form a module ( Figure 4 The example shows the interconnection of three cells.) In some cases, multiple first current collectors 130a can be electrically connected (eg, via a bus bar) to connect multiple cells in parallel or series.

[0076] The first current collector 130a may include a first metal current collector 131a made of metal and electrically connected to the bus bar, and a first carbon current collector 132a may be disposed between the first metal current collector 131a and the frame 110 (eg, Figure 3 shown).

[0077] The first carbon current collector 132a may be made of materials such as graphite, carbon, and carbon plastic, and may have high electrical conductivity and high acid resistance. Figure 3 , the first carbon current collector 132a can be provided between the first liquid electrode and the first metal current collector 131a to allow electrons to move between them but to prevent the first metal current collector 131a from being oxidized. The first carbon current collector 132a can be formed in a rectangular plate shape or can be formed by applying the first metal current collector 131a.

[0078] The first carbon current collector 132a may be formed such that a peripheral portion (e.g., outer boundary) thereof matches a peripheral portion (e.g., outer boundary) of the frame 110. The first carbon current collector 132a may be coupled to the frame 110 by a first adhesive member 160a. The first carbon current collector 132a may have the first adhesive member 160a adhered or applied to a peripheral portion thereof.

[0079] The first metal current collector 131a may be made of a metal having high conductivity (eg, copper or aluminum). The first metal current collector 131a may be formed in a rectangular plate shape, and a portion thereof may protrude to be connected to the bus bar.

[0080] The first metal current collector 131a may be formed of a flexible film or a rigid plate. Figure 4 As shown, when a plurality of batteries form a module, a plurality of first metal current collectors 131 a may be formed of flexible films, with a portion of the first metal current collectors 131 a being formed of a rigid plate.

[0081] The first carbon current collector 132a may be disposed on one surface of the first metal current collector 131a. Figure 4 In the illustrated module, the first carbon current collector 132a of adjacent cells on two opposing sides of the cell may be disposed on each of the two sides of the first metal current collector 131a of the cell.

[0082] Return Reference Figure 3 , the second current collector 130b may be disposed on the other side of the frame 110 to form a second electrode reservoir 111b together with the frame 110 and the separator 120. The second current collector 130b may be parallel to and spaced apart from the first current collector 130a. The second current collector 130b may be bonded to a second bonding member 160b, which is bonded to the frame 110. The second current collector 130b may be coupled to the frame 110 via the second bonding member 160b. For example, the second bonding member 160b may be applied or bonded to a peripheral portion of the second current collector 130b and / or a peripheral portion of the frame 110 to bond the second current collector 130b and the frame 110 together.

[0083] Since the second current collector 130b has the second bonding member 160b bonded thereto, it may not directly contact the first liquid electrode or the second liquid electrode flowing in the inter-electrode communication part 112. The second current collector 130b may be electrically connected to the second liquid electrode, and electrons may move, allowing current to flow during charge and discharge.

[0084] When a plurality of batteries form a module including a plurality of frames 110, a plurality of first current collectors 130a, and a plurality of second current collectors 130b (e.g., as Figure 4 ), the plurality of second current collectors 130b may be electrically connected (eg, via a bus bar) to connect the plurality of batteries in parallel.

[0085] The second current collector 130 b may include a second metal current collector 131 b made of metal and electrically connected to the bus bar, and a second carbon current collector 132 b disposed between the second metal current collector 131 b and the frame 110 .

[0086] The second carbon current collector 132b may be made of materials such as graphite, carbon, and carbon plastic, and may have high conductivity and high acid resistance. The second carbon current collector 132b may be disposed between the second liquid electrode and the second metal current collector 131b to allow electrons to flow between them but to prevent oxidation of the second metal current collector 131b. The second carbon current collector 132b may be formed in a rectangular plate shape or may be formed by applying the second metal current collector 131b.

[0087] The second carbon current collector 132b may be formed such that a peripheral portion (e.g., outer boundary) thereof matches a peripheral portion (e.g., outer boundary) of the frame 110. The second carbon current collector 132b may be coupled to the frame 110 by a second adhesive member 160b. The second carbon current collector 132b may have the second adhesive member 160b adhered or applied to a peripheral portion thereof.

[0088] The second metal current collector 131b may be made of a metal having high conductivity (eg, copper or aluminum). The second metal current collector 131b may be formed in a rectangular plate shape, and a portion thereof may protrude to be connected to the bus bar.

[0089] The second metal current collector 131b may be formed of a flexible film or a rigid plate. Figure 4 As shown, when a plurality of batteries form a module, a plurality of second metal current collectors 131b may be formed of flexible films, wherein a portion of the second metal current collectors 131b is formed of a rigid plate.

[0090] The second carbon current collector 132b may be disposed on one surface of the second metal current collector 131b. Figure 4 In the illustrated module, the second carbon current collector 132b of an adjacent cell on two opposing sides of the cell may be disposed on each of the two sides of the second metal current collector 131b of the cell.

[0091] Return Reference Figure 3 , the first solid electrode 150a may be impregnated with the first liquid electrode and disposed in the first electrode reservoir 111a. The first solid electrode 150a may be surrounded by the frame 110, the first current collector 130a, and the separator 120. The first solid electrode 150a may include a carbon-based material such as carbon or graphite felt, carbon cloth, carbon black, graphite powder, or graphene. Compared to the first adhesive member 160a, the first solid electrode 150a may be disposed more toward the interior of the frame 110 (in the in-plane direction).

[0092] In some embodiments, the first solid electrode 150a may be formed in a porous hexahedron shape. The thickness of the first solid electrode 150a may be greater than the out-of-plane thickness of the first electrode reservoir 111a. In this case, the first solid electrode 150a may be accommodated by being pressed into the first electrode reservoir 111a. The first solid electrode 150a may be in close contact with the first current collector 130a and the separator 120.

[0093] The second solid electrode 150b may be impregnated with a second liquid electrode and disposed in the second electrode reservoir 111b. The second solid electrode 150b may be surrounded by the frame 110, the second current collector 130b, and the separator 120. The second solid electrode 150b may include a carbon-based material such as carbon or graphite felt, carbon cloth, carbon black, graphite powder, or graphene. Compared to the second adhesive member 160bT, the second solid electrode 150b may be disposed more toward the interior of the frame 110 (in the in-plane direction).

[0094] In some embodiments, the second solid electrode 150b may be formed in a porous hexahedron shape. The thickness of the second solid electrode 150b may be greater than the out-of-plane thickness of the second electrode reservoir 111b. In this case, the second solid electrode 150b may be accommodated by being pressed into the second electrode reservoir 111b. The second solid electrode 150b may be in close contact with the second current collector 130b and the separator 120.

[0095] Each of the first adhesive member 160a and the second adhesive member 160b may include at least one of an acrylate-based adhesive, an acrylate-ester-based adhesive, an acrylate-vinyl 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-type adhesive, or a film-based adhesive, or a combination thereof.

[0096] Each of the first adhesive member 160a and the second adhesive member 160b can be formed into a strip shape. For example, each of the first adhesive member 160a and the second adhesive member 160b can be formed into a square shape with a hollow inner area. In some embodiments, each of the first adhesive member 160a and the second adhesive member 160b can be formed into a closed curve around the peripheral area of the frame, such as Figure 5 In some embodiments, the outer peripheral portion (e.g., outer boundary) of each of the first and second adhesive members 160a, 160b is formed to match the outer peripheral portion (e.g., outer boundary) of the frame 110. More specifically, the edge of each of the first and second adhesive members 160a, 160b is flush with the edge of the frame 110 in the out-of-plane direction.

[0097] The first adhesive member 160a may bond the first carbon current collector 132a of the first current collector 130a to the frame 110. The first adhesive member 160a may seal between the first carbon current collector 132a of the first current collector 130a and the frame 110. The first adhesive member 160a may be stacked between the first carbon current collector 132a of the first current collector 130a and the frame. The first adhesive member 160a may be bonded to one in-plane side of the frame 110. The first adhesive member 160a may be bonded to an outer peripheral portion of one surface of the first carbon current collector 132a on which the first metal current collector 131a is not disposed. The first adhesive member 160a may be applied to the first carbon current collector 132a to be bonded to the frame 110.

[0098] The first adhesive member 160a may be provided so that the outer peripheral portion (e.g., outer boundary) of the first carbon current collector 132a of the first current collector 130a may match the outer peripheral portion (e.g., outer boundary) of the frame 110. More specifically, the edge of the first carbon current collector 132a may be flush with the edge of the frame 110 in the out-of-plane direction. For example, the first adhesive member 160a may be provided outside the periphery of the separation film 120 in the frame 110 in the in-plane direction.

[0099] The first adhesive member 160a may form a portion of the inter-electrode communication part 112 together with the frame 110. The first adhesive member 160a may cover a portion of the inter-electrode communication part 112. The first adhesive member 160a may cover a portion of the inter-electrode communication part 112 formed as an in-plane groove at the outer peripheral portion of the frame 110. The first adhesive member 160a may cover a portion of the inter-electrode communication part 112 formed as a through hole in the frame 110.

[0100] At least a portion of the first adhesive member 160a may extend beyond the inter-electrode communication part 112 toward the outer boundary of the frame 110. The first liquid electrode or the second liquid electrode flowing in the inter-electrode communication part 112 may contact the first adhesive member 160a. The first adhesive member 160a may be bonded to the frame 110 and the first current collector 130a so that the first liquid electrode or the second liquid electrode flowing in the inter-electrode communication part 112 may not contact the first current collector 130a.

[0101] The first bonding member 160a may be disposed in a space defined by the frame 110 (i.e., in a space such as the first electrode reservoir 111a, the second electrode reservoir 111b, and / or the inter-electrode communication component 112) where the first solid-state electrode 150a and the second solid-state electrode 150b are not disposed.

[0102] The second adhesive member 160b can bond the second carbon current collector 132b of the second current collector 130b to the frame 110. The second adhesive member 160b can seal between the second carbon current collector 132b of the second current collector 130b and the frame 110. The second adhesive member 160b can be laminated between the second carbon current collector 132b of the second current collector 130b and the frame 110. The second adhesive member 160b can be bonded to the other out-of-plane peripheral portion of the frame 110. The second adhesive member 160b can be bonded to the peripheral portion of one of the two surfaces of the second carbon current collector 132b where the second metal current collector 131b is not disposed. Here, the two major surfaces of the second carbon current collector 132b are also referred to as the two out-of-plane oriented surfaces of the second carbon current collector 132b. The second adhesive member 160b can be applied to the second carbon current collector 132b to bond it to the frame 110.

[0103] The second bonding member 160b can be arranged to allow the outer peripheral portion (e.g., outer boundary) of the second carbon current collector 132b of the second current collector 130b to match the outer peripheral portion (e.g., outer boundary) of the frame 110. More specifically, the edge of the second carbon current collector 132b can be flush with the edge of the frame 110 in the out-of-plane direction. Compared to the second solid-state electrode 150b, the second bonding member 160b can be arranged more toward the outer boundary of the frame 110 (in the in-plane direction). Compared to the second reservoir 111b, the second bonding member 160b can be arranged more toward the outer boundary of the frame 110 (in the in-plane direction). Compared to the separator 120S, the second bonding member 160b can be arranged more toward the outer boundary of the frame 110 (in the in-plane direction).

[0104] The second adhesive member 160b may be formed on a portion of the frame 110 and a portion of the inter-electrode communication part 112. The second adhesive member 160b may cover a portion of the inter-electrode communication part 112. The second adhesive member 160b may cover a portion formed as a groove in the inter-electrode communication part 112 along the in-plane direction of the outer peripheral portion of the frame 110. The second adhesive member 160b may cover a portion formed as a through hole in the inter-electrode communication part 112 along the out-plane direction of the frame 110.

[0105] At least a portion of the second adhesive member 160b may extend beyond the inter-electrode communication part 112 toward the outer boundary of the frame 110. The first liquid electrode or the second liquid electrode flowing in the inter-electrode communication part 112 may contact the second adhesive member 160b. The second adhesive member 160b may be bonded to the frame 110 and the second current collector 130b so that the first liquid electrode or the second liquid electrode flowing in the inter-electrode communication part 112 may not contact the second current collector 130b.

[0106] The second bonding member 160b may be disposed in a space defined by the frame 110 (eg, the first electrode reservoir 111a, the second electrode reservoir 111b, and the inter-electrode communication part 112) where the first and second solid electrodes 150a, 150b are not disposed.

[0107] The first adhesive member 160a and the second adhesive member 160b may respectively cover both ends of the through-hole portion of the inter-electrode connecting member 112. One end of the through-hole in the inter-electrode connecting member 112 may be blocked by the first adhesive member 160a, while the other end of the through-hole in the inter-electrode connecting member 112 may be blocked by the second adhesive member 160b. The first adhesive member 160a can prevent the liquid electrode flowing in the groove of the inter-electrode connecting member 112 from directly contacting the first carbon current collector 132a of the first current collector 130a, while the second adhesive member 160b can prevent the liquid electrode flowing in the groove of the inter-electrode connecting member 112 from directly contacting the second carbon current collector 132b of the second current collector 130b.

[0108] The structure of the battery having the above-described configuration according to the present disclosure will be described below.

[0109] Separator film 120 having a predetermined thickness may be bonded to the center of the thickness direction of rectangular frame 110 having a predetermined thickness. First current collector 130a may be bonded to one out-of-plane side of frame 110 via first adhesive member 160a, while second current collector 130b may be bonded to the other out-of-plane side of the frame via second adhesive member 160b, thereby forming only first electrode reservoir 111a and second electrode reservoir 111b. In other words, frame 110 may be disposed between first current collector 130a and second current collector 130b, and separator film 120 may be disposed within frame 110.

[0110] A first solid electrode 150 a impregnated with a first liquid electrode may be disposed in the first electrode reservoir 111 a , and a second solid electrode 150 b impregnated with a second liquid electrode may be disposed in the second electrode reservoir 111 b .

[0111] The first adhesive member 160a or the second adhesive member 160b can be bonded to the peripheral area of the frame 110 to bond to the peripheral area of the first carbon current collector 132a or the second carbon current collector 132b. The first adhesive member 160a, the second adhesive member 160b, the frame 110, the first carbon current collector 132a, and the second carbon current collector 132b can be arranged to allow their peripheral areas (e.g., outer boundaries) to match each other. Therefore, when they are combined with each other, the shape becomes a rectangular parallelepiped. More specifically, the edges of the first adhesive member 160a, the second adhesive member 160b, the frame 110, the first carbon current collector 132a, and the second carbon current collector 132b can be flush in the out-of-plane direction.

[0112] The first adhesive member 160a or the second adhesive member 160b may form the frame 110 and the inter-electrode connecting member 112. The first adhesive member 160a, the first carbon current collector 132a, and the first metal current collector 131a may be sequentially disposed on the inter-electrode connecting member 112 of the first electrode reservoir 111a. The second adhesive member 160b, the second carbon current collector 132b, and the second metal current collector 131b may be sequentially disposed on the inter-electrode connecting member 112 of the second electrode reservoir 111b.

[0113] During charge or discharge, the first liquid electrode and / or the second liquid electrode may flow in the inter-electrode connecting part 112, but the first liquid electrode and / or the second liquid electrode may be prevented from directly contacting the first current collector 130a or the second current collector 130b by the first adhesive member 160a or the second adhesive member 160b.

[0114] refer to Figure 4 , the above-mentioned configuration is crossed and repeated to form a module. That is, the first current collector 130a can be disposed between the plurality of frames 110 to which the separator 120 is bonded, and the second current collector 130b can be disposed between the plurality of frames 110 to which the separator 120 is bonded. In this case, only one first metal current collector 131a can be disposed between the two first carbon current collectors 132a, and only one second metal current collector 131b can be disposed between the two second carbon current collectors 132b.

[0115] Figure 5 is a plan view of a battery according to an embodiment. Figure 6 is a front view of a frame according to an embodiment. Figure 7 is a rear view of a frame according to an embodiment. Figure 8 is a view illustrating the flow of a liquid electrode through an inter-electrode communication member of a battery according to an embodiment. Figure 9 yes Figure 7 The frame is shown in cross-section along direction 9-9.

[0116] According to an embodiment of the present disclosure, the frame 110 may include: a frame body 119 having a square shape, the frame body having an external structural area surrounding a hollow internal area; a separation membrane support member 115, which protrudes inward from the external structural area of the frame body 119 toward the hollow internal area to be coupled to the separation membrane 120; and a frame reinforcement portion 116, which is arranged in the hollow internal area of the frame body 119 to prevent the frame body 119 from being deformed.

[0117] The frame body 119 may be formed into a hollow square shape having four stripes. The hollow interior region of the frame body 119 may form the first electrode reservoir 111a and the second electrode reservoir 111b. The separator support 115 protruding in the in-plane direction may be formed in the hollow interior region of the frame body 119. The inter-electrode communication member 112 may be formed in the frame body 119.

[0118] The frame body 119 may have one out-of-plane side to which the first adhesive member 160a is bonded, and another out-of-plane side to which the second adhesive member 160ba is bonded. More specifically, the frame body 119 may have one end surface to which the first adhesive member 160a is bonded, and another end surface to which the second adhesive member 160b is bonded, wherein the two end surfaces are opposite each other in the out-of-plane direction. One out-of-plane side of the frame body 119 may be bonded to the first current collector 130a via the first adhesive member 160a, while the other out-of-plane side of the frame body 119 may be bonded to the second current collector 130b via the second adhesive member 160b.

[0119] The separation membrane support 115 may protrude from the hollow inner region of the frame body 119 toward the center in an in-plane direction and may be formed in a square shape. Figure 3 , the separation membrane supporter 115 may be disposed at the center of the frame body 119 in the thickness direction.

[0120] The outer periphery of the separator 120 can be bonded to the separator support 115 so that the separator can be stretched. Preferably, the separator support 115 has a minimum width sufficient to support the separator 120. The separator support 115 can serve as a rib for reinforcing the in-plane direction of the frame body 119, thereby preventing the frame body 119 from deforming in the in-plane direction even when the first or second liquid electrodes expand or contract, gas is generated within the liquid electrodes, or an external impact occurs.

[0121] One lateral surface of the separator support 115 may be bonded to the separator 120 in close contact to prevent leakage of the first liquid electrode or the second liquid electrode between the separator support 115 and the separator 120. An adhesive including the same component as the material of the first adhesive member 160a or the second adhesive member 160b may be provided between the separator support 115 and the separator 120. The separator support 115 and the separator 120 may be bonded by an adhesive including at least one of an acrylate-based adhesive, an acrylate-ester adhesive, an acrylate-vinyl adhesive, a polycarbonate-based adhesive, a polyethylene-based adhesive, an epoxy-based adhesive, and an isocyanate-based adhesive.

[0122] The separation film supporter 115 may be disposed inside the first adhesive member 160 a or the second adhesive member 160 b in an in-plane direction.

[0123] The frame reinforcement portion 116 may be formed to connect one side of the frame body 119 to the other side or connect one vertex to the other vertex. The frame reinforcement portion 116 of this embodiment may be formed in a + shape connecting two opposite sides of the frame body 119.

[0124] The frame reinforcing portion 116 may be disposed inside the first adhesive member 160 a or the second adhesive member 160 b in the in-plane direction.

[0125] refer to Figure 5 , the first adhesive member 160a or the second adhesive member 160b may not be adhered to the separation membrane support 115. The first adhesive member 160a may be adhered to one side of the frame body 119 in the out-of-plane direction, while the second adhesive member 160b may be adhered to the other side of the frame body 119 in the out-of-plane direction. The first adhesive member 160a may cover a portion of the inter-electrode communication member 112 formed on the out-of-plane direction side of the frame body 119, while the second adhesive member 160b may cover a portion of the inter-electrode communication member 112 formed on the other side of the frame body 119 in the out-of-plane direction.

[0126] In order to resolve the imbalance between the amount of the first liquid electrode and the amount of the second liquid electrode due to crossover that may occur during charging or discharging, the inter-electrode communication component 112 is configured to be in fluid communication with the first electrode reservoir 111a and the second electrode reservoir 111b, so that the first liquid electrode or the second liquid electrode can flow inside the inter-electrode communication component during charging or discharging.

[0127] The inter-electrode communication member 112 may be formed thin and long to have a resistance value higher than a predetermined level while having a volume allowing flow of half the difference between the amount of the first liquid electrode and the amount of the second liquid electrode due to crossing.

[0128] The inter-electrode communication part 112 may be formed in a portion of the frame body 119 surrounding the first solid electrode 150 a or the second solid electrode 150 b to be disposed in a portion of a circumference of the first solid electrode 150 a or the second solid electrode 150 b .

[0129] In some embodiments, the inter-electrode communication member 112 may be disposed further toward the outer boundary of the frame 110 (in the in-plane direction) than the separator support 115. In some embodiments, the inter-electrode communication member 112 may be disposed further inwardly away from the outer boundary of the frame 110 (in the in-plane direction) than the adhesive member 160a or the second adhesive member 160b. For example, the inter-electrode communication member 112 may be covered by the first adhesive member 160a or the second adhesive member 160b.

[0130] refer to Figure 5 and Figure 6 The inter-electrode communication component 112 may include: an inter-electrode through hole 1121 formed in the frame as a through hole in the out-of-plane direction; a first inter-electrode channel 1123a, through which the inter-electrode through hole 1121 and the first electrode reservoir 111a are fluidically connected to each other; and a second inter-electrode channel 1123b, through which the inter-electrode through hole 112 and the second electrode reservoir 111b are fluidically connected to each other.

[0131] The inter-electrode through hole 1121 can be formed in the frame 110 as an out-of-plane through hole. The inter-electrode through hole 1121 can be arranged in a direction that penetrates the plane formed by the separator 120. The inter-electrode through hole 1121 can be perpendicular to the plane formed by the separator 120. The transition portion can be perpendicular to the first inter-electrode channel 1123a. The inter-electrode through hole 1121 can be perpendicular to the second inter-electrode channel 1123b. The inter-electrode through hole 1121 formed in the out-of-plane direction can be bent in the in-plane direction at one end to connect to the first inter-electrode channel 1123a, and can be bent in the in-plane direction at the other end to connect to the second inter-electrode channel 1123b. The inter-electrode through hole 1121 can connect the first inter-electrode channel 1123a and the second inter-electrode channel 1123b to each other.

[0132] The inter-electrode through hole 1121 may be formed at one corner of the square frame body 119. One end of the inter-electrode through hole 1121 may be covered by the first adhesive member 160a, while the other end of the inter-electrode through hole 1121 may be covered by the second adhesive member 160b. The center of the inter-electrode through hole 1121 in the out-of-plane direction (i.e., the longitudinal direction) may be connected to the injection hole 114 to be described later.

[0133] refer to Figure 6, the first inter-electrode channel 1123a can be formed as a groove in one out-of-plane direction side of the frame body 119. The first inter-electrode channel 1123a can be formed along the frame body 119, with the in-plane direction as the longitudinal direction. The first inter-electrode channel 1123a can be bent at least twice. The first inter-electrode channel 1123a can be bent four times along the shape of the frame body 119 in the inter-electrode through-hole 1121 to form a shape that is close to a square, and can then be connected to the first electrode reservoir 111a to connect with the first electrode reservoir 111a. The first inter-electrode channel 1123a can be formed on all four strips of the frame body 119. The first inter-electrode channel 1123a can have a first transition drain portion 1125a, which is open to connect with the first electrode reservoir 111a. The first inter-electrode channel 1123a can be covered by the first bonding member 160a.

[0134] refer to Figure 7 , the second inter-electrode channel 1123b can be formed as a groove formed on the other outward direction side of the frame body 119. The second inter-electrode channel 1123b can be formed along the frame body 119, with the in-plane direction as the longitudinal direction. The second inter-electrode channel 1123b can be formed in a straight line in the inter-electrode through hole 1121 along one of the strips of the frame body 119, and can then be connected to the second electrode reservoir 111b. The second inter-electrode channel 1123b can have a second transition drain portion 1125b, which is open to connect to the second electrode reservoir 111b. The second inter-electrode channel 1123b can be covered by the second adhesive member 160b.

[0135] The second inter-electrode channel 1123b can be formed so as not to overlap with the first inter-electrode channel 1123a when projected in the out-of-plane direction, so that the first inter-electrode channel 1123a and the second inter-electrode channel 1123b can form a closed curve when projected in the out-of-plane direction. When projected in the out-of-plane direction, the first inter-electrode channel 1123a and the second inter-electrode channel 1123b can form a square shape. In other words, the first inter-electrode channel 1123a and the second inter-electrode channel 1123b can be formed to penetrate the longitudinal direction (i.e., the in-plane direction) of the frame body 119.

[0136] The second transition guide portion 1125b may be formed to overlap the first transition guide portion 1125a when projected in the out-of-plane direction. The first transition guide portion 1125a and the second transition guide portion 1125b may be formed in parallel along the same direction.

[0137] The first adhesive member 160a may cover the first inter-electrode channel 1123a, and the second adhesive member 160b may cover the second inter-electrode channel 1123b. The first adhesive member 160a may cover one end of the inter-electrode through-hole 1121, and the second adhesive member 160b may cover the other end of the inter-electrode through-hole 1121.

[0138] refer to Figure 9 The battery according to the embodiment of the present disclosure may further include an injection hole 114 formed in the frame 110 so that the first liquid electrode or the second liquid electrode may be injected through the injection hole 114 .

[0139] The injection hole 114 can be formed in the frame 110 so that the liquid electrode can be injected from the outside through the injection hole 114 to be introduced into the first electrode reservoir 111a and the second electrode reservoir 111b. The injection hole 114 can have one end that is open to the outside in the frame 110. One end of the injection hole 114 can be flush with the outer circumferential flat (end) surface 1191 of the frame 110, and when the battery is stacked with other batteries, the outer circumferential flat (end) surface is exposed to the outside. In other words, the injection hole 114 can be formed so as not to be surrounded by the portion of the frame 110 that protrudes from the outer circumferential flat surface 1191 of the frame 110. When the frame 110 is manufactured separately before being assembled with other components, the frame 110 does not have such a protruding portion in which the injection hole 114 is provided. This is different from removing the protruding portion surrounding the injection hole 114 after the liquid electrode is injected through the injection hole 114. Subsequent removal of the protruding portion will inevitably leave at least a residue of the protruding portion, making it impossible for one end of the injection hole 114 to be flush with the flat surface of the frame 110, and / or the injection hole 114 is surrounded by the residue of the protruding portion. The injection hole 114 can be formed together with the frame body by molding. Since the protruding portion of the frame 110 does not exist from the beginning of the manufacturing and assembly process, space for storing batteries and battery modules including stacked batteries can be saved, and the manufacturing and assembly process of the batteries and battery modules can be easier. The injection hole 114 can be formed to inject the first liquid electrode into the first electrode reservoir 111a and the second liquid electrode into the second electrode reservoir 111b. When the liquid electrodes are injected from the outside through the injection hole 114, the liquid electrodes can be accommodated in the first electrode reservoir 111a and the second electrode reservoir 111b. The liquid electrode injected into the first electrode reservoir 111a through the injection hole 114 can become the first liquid electrode, and the liquid electrode injected into the second electrode reservoir through the injection hole 114 can become the second liquid electrode.

[0140] The injection hole 114 may be a hole formed in the in-plane direction of the frame 110. The injection hole 114 may be formed at one end of one strip of the frame body 119 in the longitudinal direction. The injection hole 114 may be formed at one corner of the square frame body 119. The injection hole 114 may be formed in the thickness direction of the frame body 119.

[0141] The injection hole 114 may be provided on a plane formed by the separation film 120. The injection hole 114 may be provided at a boundary between the first electrode reservoir 111a and the second electrode reservoir 111b. The injection hole 114 may be provided between the first adhesive member 160a and the second adhesive member 160b.

[0142] The in-plane length of the injection hole 114 may be greater than the thickness of the frame 110 in the thickness direction.

[0143] Preferably, the injection port 114 is connected to the inter-electrode through hole 1121 of the inter-electrode communication component 112 at a right angle and branches into a T shape. The injection hole 114 can branch to the inter-electrode communication component 112 to connect with the first electrode reservoir 111a and the second electrode reservoir 111b. The injection hole 114 can be connected to the center of the in-plane direction (i.e., the longitudinal direction) of the inter-electrode through hole 1121. The flow cross-sectional area of the injection port 114 at any point is greater than the maximum flow cross-sectional area of the inter-electrode communication component 112. The flow cross-sectional area of the injection port 114 decreases from one end to the other end of the inter-electrode through hole 1121 connected to the inter-electrode communication component 112. The injection hole 114 can be arranged between the first inter-electrode channel 1123a and the second inter-electrode channel 1123b. The injection hole 114 can be formed in the same direction as the first transition drainage portion 1125a and the second transition drainage portion 1125b, and can be arranged in parallel. According to an embodiment, the injection hole 114 may be provided in a direction perpendicular to the first transition guide portion 1125 a or the second transition guide portion 1125 b .

[0144] After the liquid electrode is injected into the first electrode receiver 111 a and the second electrode receiver 111 b in an amount to perform the first half reaction and the second half reaction, the injection hole 114 may be closed.

[0145] The battery according to an embodiment of the present disclosure may include a sealing member 113 blocking the injection hole 114 .

[0146] At least a portion of the sealing member 113 may be inserted into the injection hole 114. In this embodiment, the sealing member 113 may have a rod-like shape and may be press-fitted into the injection hole 114 to block the injection hole 114. The sealing member 113 may include at least one of an acrylate-based adhesive, an acrylate-ester-based adhesive, an acrylate-vinyl adhesive, a polycarbonate-based adhesive, a polyethylene-based adhesive, an epoxy-based adhesive, and an isocyanate-based adhesive. The sealing member 113 is one of a solvent-based, emulsion-based, hot-melt-based, or liquid-curing adhesive / adhesive and may be injected into the injection hole 114 to seal the injection hole 114. The flow cross-sectional area of the injection port 114 decreases from one end blocked by the sealing member 113 to the other end.

[0147] Figure 10 is a cross-sectional view partially showing a battery according to another embodiment.

[0148] In an embodiment, a portion of the sealing member 213 may be attached to the frame 110 to cover the injection hole 114, and another portion thereof may be inserted into the injection hole 114. The sealing member 213 may be bonded to the frame 110 by at least one of an acrylate adhesive, an acrylate-ester adhesive, an acrylate-vinyl adhesive, a polycarbonate adhesive, a polyethylene adhesive, an epoxy adhesive, and an isocyanate adhesive.

[0149] Figure 11 is a cross-sectional view partially showing a battery according to another embodiment.

[0150] In the present embodiment, the sealing member 313 may be formed of a film-based adhesive and bonded to the frame 110. The sealing member 313 includes at least one of an acrylate-based adhesive, an acrylate-ester-based adhesive, an acrylate-vinyl adhesive, a polycarbonate-based adhesive, a polyethylene-based adhesive, an epoxy-based adhesive, and an isocyanate-based adhesive.

[0151] The battery can be manufactured by forming a frame 110 having a first electrode reservoir 111a as a space for storing a first liquid electrode, a second electrode reservoir 111b as a space for storing a second liquid electrode, an inter-electrode communication member 112 configured to allow the first electrode reservoir 111a and the second electrode reservoir 111b to be fluidically connected to each other so as to absorb an imbalance in the volumes of the first liquid electrode and the second liquid electrode, and a fluid communication member 112 connected to the first electrode reservoir 111a and the second electrode reservoir 111b. the first electrode reservoir 111 a is connected to the second electrode reservoir 111 b; the separator 120 is coupled to the frame 110, the separator 120 separating the first electrode reservoir 111 a from the second electrode reservoir 111 b; the first current collector 130 a and the second current collector 130 b are coupled to the frame 110 by the first adhesive member 160 a and the second adhesive member 160 b, respectively, in such a manner that each current collector covers the first electrode reservoir 111 a and the second electrode reservoir 111 b; and the liquid electrode constituting the first liquid electrode and the second liquid electrode is injected through the injection hole 114.

[0152] The step of forming the frame may further include forming an injection hole flush with the outer circumferential flat surface 1191 of the frame 110 .

[0153] The step of forming the frame may further include forming the injection hole 114 not surrounded by a portion of the frame 110 that protrudes from the outer circumferential flat surface 1191 of the frame 110 .

[0154] The step of coupling the first current collector 130a and the second current collector 130b to the frame 110 may include applying a first adhesive member 160a to at least one of the first current collector 130a or the frame 110 to adhere the first current collector 130a and the frame 110 together; and applying a second adhesive member 160b to at least one of the second current collector 130b or the frame 110 to adhere the second current collector 130b and the frame 110 together.

[0155] The method may further include closing the injection hole 114 using a sealing member 113 after the injecting step.

[0156] The above referenced embodiments are described with reference to a plurality of illustrative embodiments of the embodiments. However, the present disclosure is not intended to be limited to the embodiments and drawings set forth herein, and those skilled in the art may devise many other modifications and embodiments. In addition, although not explicitly described in the description of the embodiments, the effects and predictable effects based on the configurations in the present disclosure are intended to be included within the scope of the present disclosure.

Claims

1. A battery comprising: a first current collector; a second current collector, spaced apart from the first current collector; a separator, disposed between the first current collector and the second current collector; a frame forming a first electrode reservoir between the first current collector and the separator membrane, and forming a second electrode reservoir between the second current collector and the separator membrane; a first bonding member providing bonding between the first current collector and the frame; a second bonding member providing bonding between the second current collector and the frame; as well as an inter-electrode communication component configured to allow the first electrode reservoir and the second electrode reservoir to be in fluid communication with each other, At least a portion of the inter-electrode communication component is enclosed by the first bonding member and the frame or by the second bonding member and the frame.

2. The battery according to claim 1, wherein the first bonding member is sealed between the first current collector and the frame, and The second adhesive member is sealed between the second current collector and the frame.

3. The battery according to claim 1, wherein the first bonding member is laminated between the first current collector and the frame, and Here, the second adhesive member is stacked between the second current collector and the frame.

4. The battery according to claim 1, wherein Each of the first and second adhesive members includes at least one of an acrylate adhesive, an acrylate-ester based adhesive, an acrylate-vinyl adhesive, a polycarbonate based adhesive, a polyethylene adhesive, an epoxy adhesive, and an isocyanate adhesive.

5. The battery according to claim 1, wherein Each of the first adhesive member and the second adhesive member includes at least one of a solvent-based adhesive, an emulsion-based adhesive, a hot melt-based adhesive, a liquid curing-type adhesive, or a film-based adhesive.

6. The battery according to claim 1, wherein the first bonding member is applied to at least one of the first current collector or the frame to bond the first current collector and the frame together, and Here, the second bonding member is applied to at least one of the second current collector or the frame to bond the second current collector and the frame together.

7. The battery according to claim 1, wherein Each of the first adhesive member and the second adhesive member forms a closed curve surrounding a peripheral area of the frame.

8. The battery according to claim 1, wherein The frame has a square shape with a hollow interior area, and Here, each of the first adhesive member and the second adhesive member is formed in a strip shape including an outer peripheral portion matching an outer peripheral portion of the frame.

9. The battery according to claim 1, wherein The first bonding member is bonded to one side of the frame, and The second bonding member is bonded to the other out-of-plane direction side of the frame.

10. The battery according to claim 1, wherein The framework includes: a frame body comprising an outer structural region surrounding a hollow interior region; and a separator membrane support member protruding inwardly from an outer structural region of the frame body toward a hollow inner region of the frame body to be coupled to the separator membrane, and The first bonding member is bonded to a first side of the outer structural region of the frame body facing the first current collector, and the second bonding member is bonded to a second side of the outer structural region of the frame body facing the second current collector.

11. The battery according to claim 1, wherein The framework includes: a frame body comprising an outer structural region surrounding a hollow interior region; and a separator membrane support member protruding inwardly from an outer structural region of the frame body toward a hollow inner region of the frame body to be coupled to the separator membrane, and Each of the first adhesive member and the second adhesive member is disposed on an outer structural region of the frame body and is disposed more toward an outer boundary of the frame than the separation membrane support.

12. The battery according to claim 1, further comprising: a first solid electrode disposed in the first electrode reservoir and configured to be impregnated with a first liquid electrode; as well as a second solid electrode disposed in the second electrode reservoir and configured to be impregnated with a second liquid electrode, wherein the first bonding member is disposed closer to an outer boundary of the frame than the first solid electrode, and The second bonding member is disposed toward an outer boundary of the frame more than the second solid-state electrode.

13. The battery according to claim 1, wherein Each of the first adhesive member and the second adhesive member is disposed toward an outer boundary of the frame more than the separation film.

14. The battery according to claim 1, wherein The inter-electrode communication member is provided between the first bonding member and the second bonding member.

15. The battery according to claim 1, wherein The inter-electrode communication component includes: inter-electrode through holes, which are arranged along the out-of-plane direction of the frame; a first inter-electrode channel configured to allow the inter-electrode through-hole and the first electrode reservoir to be in fluid communication with each other; and a second inter-electrode channel configured to allow the inter-electrode through-hole and the second electrode reservoir to be in fluid communication with each other, The first bonding member covers the first inter-electrode channel, and the second bonding member covers the second inter-electrode channel.

16. The battery according to claim 1, wherein the first bonding member is disposed toward an outer boundary of the frame more than the first electrode reservoir, and The second bonding member is disposed toward an outer boundary of the frame more than the second electrode reservoir.

17. A battery comprising: a first current collector; a second current collector, spaced apart from the first current collector; a separator, disposed between the first current collector and the second current collector; a frame forming a first electrode reservoir between the first current collector and the separator membrane, and forming a second electrode reservoir between the second current collector and the separator membrane; a first bonding member providing bonding between the first current collector and the frame; a second bonding member providing bonding between the second current collector and the frame; as well as an inter-electrode communication member that allows the first electrode reservoir and the second electrode reservoir to communicate with each other, Here, at least a portion of the first adhesive member and the second adhesive member is disposed closer to an outer edge of the frame in the in-plane direction of the frame than the inter-electrode communication part.

18. A battery comprising: a first liquid electrode, for carrying out a first half reaction; a second liquid electrode for carrying out a second half reaction; a separation membrane, disposed between the first liquid electrode and the second liquid electrode; a frame for supporting the separation membrane; a first current collector, electrically connected to the first liquid electrode; a second current collector, electrically connected to the second liquid electrode; a first bonding member providing bonding between the first current collector and the frame; a second bonding member providing bonding between the second current collector and the frame; as well as an inter-electrode communication component, in which the first liquid electrode and / or the second liquid electrode flows, The first liquid electrode and / or the second liquid electrode flowing in the inter-electrode communication component contacts the first bonding member and / or the second bonding member.

19. A battery comprising: a first liquid electrode, for carrying out a first half reaction; a second liquid electrode for carrying out a second half reaction; a separation membrane, disposed between the first liquid electrode and the second liquid electrode; a frame for supporting the separation membrane; a first current collector, electrically connected to the first liquid electrode; a second current collector, electrically connected to the second liquid electrode; an inter-electrode communication component, in which the first liquid electrode and / or the second liquid electrode flows; a first adhesive member providing a bond between the frame and the first current collector to prevent the first liquid electrode or the second liquid electrode flowing in the inter-electrode communication part from contacting the first current collector; as well as a second adhesive member providing bonding between the frame and the second current collector to prevent the first liquid electrode or the second liquid electrode flowing in the inter-electrode communication part from contacting the second current collector.

20. A battery comprising: a first liquid electrode, for carrying out a first half reaction; a second liquid electrode for carrying out a second half reaction; a separation membrane, disposed between the first liquid electrode and the second liquid electrode; a frame configured to support the separation membrane 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 providing bonding between the first current collector and the frame; and a second bonding member providing bonding between the second current collector and the frame, The first adhesive member and the second adhesive member are disposed in a portion of the space defined by the frame where the first solid-state electrode and the second solid-state electrode are not disposed.

Images