Support structure, electrolytic assembly and electrolytic cell

Abstract

The application discloses a support structure, an electrolytic assembly and an electrolytic cell. The support structure comprises a plurality of layers of support nets, the support net is formed by weaving at least two metal beams into a net structure, the support net has a first weaving direction and a second weaving direction intersecting with each other, the support net has a plurality of first protruding parts and a plurality of second protruding parts protruding towards opposite sides respectively, the first protruding parts and the second protruding parts are alternately connected, the first protruding parts and the second protruding parts extend along a third direction, and the first weaving direction and the second weaving direction are arranged at an angle with the third direction. The technical scheme of the application improves the problem of poor contact between the support structure and an electrode body or a polar plate.

Description

Technical Field

[0001] This application relates to the field of electrolysis technology, and in particular to a support structure, electrolysis components, and electrolysis cell. Background Technology

[0002] A conventional electrolytic cell structure includes a diaphragm and electrode bodies arranged on both sides of the diaphragm. The outer surface of the electrode body is connected to the electrode plate via a support structure. The support structure serves to electrically connect the electrode body and the electrode plate on both sides, and simultaneously creates a channel for the flow of electrolyte and gas between the electrode body and the electrode plate. However, during operation, when the electrode plate is subjected to axial pressure, the conventional support structure cannot guarantee stable contact with the electrode body or electrode plate at various points, easily leading to poor contact and affecting electrolysis efficiency. Utility Model Content

[0003] The main purpose of this application is to provide a support structure, electrolysis assembly, and electrolytic cell, which aims to improve the problem of poor contact between conventional support structures and electrode bodies or plates.

[0004] To achieve the above objectives, the support structure proposed in this application includes several layers of support mesh, which is woven from at least two metal bundles to form a mesh structure. The support mesh has intersecting first and second weaving directions. The support mesh has several first protrusions and several second protrusions protruding towards opposite sides, which are alternately connected. Both the first and second protrusions extend along a third direction, and the first and second weaving directions are both set at an angle to the third direction.

[0005] In one embodiment, the angle between the first weaving direction and the third direction is θ1, 30°≤θ1≤70°; the angle between the second weaving direction and the third direction is θ2, 30°≤θ2≤70°.

[0006] In one embodiment, the first protrusion has a first top end away from the second protrusion, the second protrusion has a second top end away from the first protrusion, a plane parallel to the first weaving direction and passing through the first top end is defined as the first plane, a plane parallel to the first weaving direction and passing through the second top end is defined as the second plane, and the distance between the first plane and the second plane is H, 5mm≤H≤7.5mm; And / or, the distance between the central axes of two adjacent first protrusions is L1, 9mm≤L1≤15mm; the distance between the central axes of two adjacent second protrusions is L2, 9mm≤L2≤15mm.

[0007] In one embodiment, the weaving density of the support mesh is not less than 0.5 kg / m². 2And not more than 1.2 kg / m 2 .

[0008] In one embodiment, two adjacent metal bundles are intertwined to form a knot, and each knot is formed by the two metal bundles intertwining at least twice.

[0009] In one embodiment, the metal bundle includes at least two metal wires, which are connected in parallel or twisted together.

[0010] In one embodiment, the metal bundles extend along the first weaving direction and are provided with a plurality of wave portions connected end to end in sequence along the first weaving direction. The wave portions have interconnected crests and troughs, and the crests protrude along the second weaving direction. At least two metal bundles are arranged along the second weaving direction, and the crest of one of two adjacent metal bundles is connected to the trough of the other.

[0011] In one embodiment, both the crest and the trough have two endpoints, and two adjacent metal bundles are respectively a first metal bundle and a second metal bundle. The two endpoints of the crest of the first metal bundle are respectively intertwined with the two adjacent troughs of the second metal bundle.

[0012] This application also proposes an electrolysis assembly, including an electrode body, an electrode plate, and the aforementioned support structure, wherein the support structure is attached to one side of the electrode body, and the electrode plate is attached to the side of the support structure opposite to the electrode body.

[0013] This application also proposes an electrolytic cell, including a diaphragm and the above-mentioned electrolytic components, wherein the electrolytic components are respectively provided on both sides of the diaphragm, the diaphragm is attached to the electrode body, and the two electrolytic components provided on both sides of the diaphragm are symmetrically arranged.

[0014] The support structure in this application includes several support meshes. The mesh structure of the support meshes has a certain degree of elasticity, so when the electrode plate is subjected to axial pressure, the support meshes can undergo elastic deformation with the movement of the electrode plate. This allows the support meshes to maintain relatively stable contact with the electrode plate or electrode body under the action of their rebound force, thereby improving conductivity. Furthermore, in this application, the first and second protrusions of the support meshes both extend along a third direction, and the first and second weaving directions are both set at an angle to the third direction. This prevents the support meshes from being too soft, improving their strength and elasticity coefficient, resulting in a more superior elastic effect. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a partial structural diagram of one embodiment of the support structure of this application; Figure 2 This is a schematic diagram of a roll forming structure according to an embodiment of the support structure of this application; Figure 3 This is a partial structural diagram of another embodiment of the support structure of this application; Figure 4 This is a side view of one embodiment of the support structure of this application; Figure 5 This is a partial structural diagram of another embodiment of the support structure of this application; Figure 6 for Figure 2 A magnified view of a section at point A in the middle; Figure 7 This is a side view of an embodiment of the electrolysis assembly of this application; Figure 8 This is a side view of an embodiment of the electrolytic cell of this application.

[0017] Explanation of icon numbers: 100. Support structure; 110. Support net; 110a. First protrusion; 110b. Second protrusion; 111. Metal bundle; 1111. First metal bundle; 1112. Second metal bundle; 111a. Crest; 111b. Trough; 112. Knot; 200. Electrode body; 300, electrode plate; 400. Diaphragm; 500. Roller.

[0018] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0020] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0021] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0022] A conventional electrolyzer structure includes a diaphragm and electrode bodies arranged on both sides of the diaphragm. The outer surface of the electrode body is connected to the electrode plate via a support structure. The support structure serves to electrically connect the electrode body and the electrode plate on both sides, and simultaneously creates a channel for the flow of electrolyte and gas between the electrode body and the electrode plate. However, conventional support structures are usually papillary structures or plate meshes. Both are rigid structures integrally formed with the electrode plate or additionally stamped. During operation, when the electrode plate is subjected to axial pressure, the papillary and plate mesh structures cannot guarantee stable contact with the electrode body or electrode plate at all points, easily leading to poor contact and affecting electrolysis efficiency.

[0023] To address the aforementioned problems, this application proposes an electrolytic cell.

[0024] Please refer to the reference. Figures 1 to 3 In the technical solution of this application, the support structure 100 includes several layers of support mesh 110. The support mesh 110 is woven from at least two metal bundles 111 to form a mesh structure. The support mesh 110 has intersecting first weaving direction and second weaving direction. The support mesh 110 has several first protrusions 110a and several second protrusions 110b protruding towards opposite sides. The first protrusions 110a and second protrusions 110b are alternately connected. The first protrusions 110a and second protrusions 110b both extend along a third direction. The first weaving direction and the second weaving direction are both set at an angle to the third direction.

[0025] The support structure 100 is disposed between the electrode body 200 and the electrode plate 300 of the electrolytic cell. The support structure 100 can be formed by stacking one, two, or more layers of support mesh 110. Please refer to the following for details. Figure 3As shown, two or more layers of support netting 110 can be set independently or connected as a whole, forming a three-dimensional support effect through interlayer stacking. Furthermore, compared to a single-layer elastic net, the stacked arrangement of two or more layers of support netting 110 provides sufficient support force and lower contact resistance during compression. Support netting 110 refers to a mesh frame with multiple gaps formed by cross-woven metal bundles 111. Specifically, it can be achieved by twisting or arranging the metal bundles 111 in parallel before weaving. Each metal bundle 111 is a linear structure composed of one or more metal wires, specifically nickel wire or nickel-plated iron wire, which enhances bending stiffness through twisting or parallel arrangement. It can be understood that the support netting 110 is woven in two non-parallel directions, thus the support netting 110 has intersecting first and second weaving directions, which can be orthogonal or obliquely arranged. For example, when the support mesh 110 is rectangular, two adjacent sides of the support mesh 110 can be used as the first weaving direction and the second weaving direction, respectively; when the support mesh 110 is circular, the extension directions of the two intersecting metal wires of the support mesh 110 are used as the first weaving direction and the second weaving direction, respectively. The support mesh 110 forms an elastic mesh substrate through the cross weaving of metal bundles 111. The angle between the first weaving direction and the second weaving direction allows the mesh structure to form multi-directional compressive strength in the plane. At the same time, when the electrode plate 300 is subjected to axial pressure, the mesh structure of the support mesh 110 undergoes elastic deformation, so that the support mesh 110 can maintain contact with the electrode plate 300 or the electrode body 200 for a long time, thereby improving the phenomenon of poor contact and increasing the electrolysis efficiency.

[0026] The first protrusion 110a and the second protrusion 110b refer to protruding units that extend alternately outward from opposite sides of the mesh surface of the support net 110, thus making the mesh surface on each side of the support net 110 appear wave-like. The first protrusion 110a and the second protrusion 110b extend alternately outward, forming staggered support points in the direction perpendicular to the mesh surface of the support net 110. When the electrode plate 300 is subjected to axial pressure, the first protrusion 110a and the second protrusion 110b distribute the load through elastic deformation. Please refer to [reference needed]. Figure 2 As shown, the first protrusion 110a and the second protrusion 110b can be obtained by roll forming. Specifically, a single-layer support net 110 or two layers of support net 110 stacked together are placed between two oppositely arranged rollers 500 for roll forming.

[0027] The first protrusion 110a and the second protrusion 110b, obtained by methods such as roll forming, are both elongated strips. The "third direction" refers to the extension direction of the first protrusion 110a and the second protrusion 110b along their length, not the protruding direction. By extending the first protrusion 110a and the second protrusion 110b in the third direction, the support net 110 is prevented from becoming too soft, thereby improving the support strength and elasticity coefficient of the support net 110.

[0028] The support structure 100 in this application includes several support nets 110. The mesh structure of the support nets 110 has a certain elasticity, so when the electrode plate 300 is subjected to axial pressure, the support nets 110 can undergo elastic deformation as the electrode plate 300 moves. This allows the support nets 110 to maintain relatively stable contact with the electrode plate 300 or the electrode body 200 under its rebound force, thereby improving conductivity. Furthermore, in this application, the first protrusion 110a and the second protrusion 110b of the support nets 110 both extend along a third direction, and both the first weaving direction and the second weaving direction are set at an angle to the third direction. This prevents the support nets 110 from being too soft, improving their strength and elasticity coefficient, thus giving them a superior elastic effect.

[0029] Please refer to the reference. Figure 1 and Figure 2 In one example, the angle between the first weaving direction and the third direction is θ1, 30°≤θ1≤70°; the angle between the second weaving direction and the third direction is θ2, 30°≤θ2≤70°.

[0030] Specifically, θ1 can be 30°, 40°, 50°, 60°, or 70°, etc. θ2 can be 30°, 40°, 50°, 60°, or 70°, etc.

[0031] This configuration ensures that the extension directions of the first protrusion 110a and the second protrusion 110b have a suitable angle with the first weaving direction and the second weaving direction, thereby reducing the risk that the extension directions of the first protrusion 110a and the second protrusion 110b will approach the first weaving direction and the second weaving direction, and thus ensuring that the support net 110 has better strength and elasticity.

[0032] like Figure 1 As shown, in one example, the distance between the central axes of two adjacent first protrusions 110a is L1, 9mm≤L1≤15mm; the distance between the central axes of two adjacent second protrusions 110b is L2, 9mm≤L2≤15mm.

[0033] Specifically, L1 can be 9mm, 10mm, 11mm, 12mm, 13mm, 14mm or 15mm. Similarly, L1 can be 9mm, 10mm, 11mm, 12mm, 13mm, 14mm or 15mm.

[0034] By setting the distance between the central axes of two adjacent first protrusions 110a to L1 (9mm≤L1≤15mm) and the distance between the central axes of two adjacent second protrusions 110b to L2 (9mm≤L2≤15mm), it is possible to ensure that the support structure 100 provides a suitable space for electrolyte and gas flow when it is positioned between the electrode body 200 and the electrode plate 300. On the other hand, it also ensures that the support mesh 110 has suitable resilience, reducing the risk of deformation due to excessive resilience and reducing the situation where it cannot stably contact the electrode plate 300 due to insufficient resilience.

[0035] Please refer to the reference. Figure 1 and Figure 4 In one example, the first protrusion 110a has a first top end away from the second protrusion 110b, and the second protrusion 110b has a second top end away from the first protrusion 110a. A plane parallel to the first weaving direction and passing through the first top end is defined as the first plane, and a plane parallel to the first weaving direction and passing through the second top end is defined as the second plane. The distance between the first plane and the second plane is H, where 5mm ≤ H ≤ 7.5mm.

[0036] Specifically, the distance H between the first plane and the second plane can be 5mm, 5.5mm, 6mm, 6.5mm, 7mm or 7.5mm.

[0037] By setting the distance H between the first plane and the second plane to 5mm≤H≤7.5mm, it can be ensured that the support structure 100 can provide suitable space for electrolyte and gas flow when it is placed between the electrode body 200 and the electrode plate 300. On the other hand, it also ensures that the support net 110 has suitable resilience, reducing the risk of deformation due to excessive resilience and reducing the situation where it cannot make stable contact with the electrode plate 300 due to insufficient resilience.

[0038] In one example, the weaving density of the support net 110 is not less than 0.5 kg / m2 and not more than 1.2 kg / m2.

[0039] By setting the weaving density of the support mesh 110 to be no less than 0.5 kg / m² and no more than 1.2 kg / m², the risk of excessive elasticity leading to easy deformation can be reduced, while the risk of insufficient elasticity preventing stable contact with the electrode plate 300 can be mitigated. Furthermore, this setting ensures an appropriate number of channels for electrolyte and gas flow, resulting in a stable flow rate.

[0040] Please refer to the reference. Figure 1 and Figure 5 In one example, two adjacent metal bundles 111 are intertwined to form a knot 112.

[0041] The knot 112 refers to the knot structure formed by the intertwining of adjacent metal bundles 111 at their intersection. Specifically, this can be achieved by twisting two metal bundles 111 together. The knot formed by the intertwining increases the contact area and connection strength between the metal bundles 111. Cross-winding refers to the twisting of two metal bundles 111 together, which can be achieved by spiral winding or weaving. The knot 112 formed by cross-winding can restrict the relative displacement between the metal bundles 111. For example, when the first metal bundle 1111 extends along the first weaving direction, it intertwines with the second metal bundle 1112 extending along the second weaving direction once, twice, or more times at the intersection point to form a knot. Therefore, the knot 112 effectively reduces the risk of slippage or misalignment of the metal bundles 111, thereby maintaining the overall structural stability of the support net 110.

[0042] By interlacing two adjacent metal bundles 111 to form a knot 112, compared to the traditional support structure 100 where the metal bundles 111 are connected by simple overlapping and welding, the mechanical interlocking structure formed by interlacing in this scheme can firmly bind adjacent metal bundles 111 together. Under pressure, it is less likely to misalign and cause poor contact. It can also enhance the structural strength of the support net 110 and ensure that the metal bundles 111 maintain a relatively stable contact state under pressure. This improves the reliability of the electrical connection between the electrode body 200 and the electrode plate 300 and reduces the decrease in electrolysis efficiency caused by poor contact.

[0043] like Figure 5 As shown, in one example, each knot 112 is formed by two metal bundles 111 interlacing at least twice.

[0044] The knot 112 refers to the connection point formed by the cross-winding of two adjacent metal bundles 111. Specifically, this can be achieved by winding the two metal bundles 111 in a spiral manner. After the first cross, the metal bundles 111 continue to cross a second, third, or even more times in the same direction, resulting in two, three, or more knots at the knot 112, making the structure relatively stable. This enhances the tensile strength of the knot 112 and improves the overall structural stability of the support net 110. Even if one knot loosens, the two metal bundles 111 can still connect through the other knot, reducing the risk of deformation or detachment of the support net 110 due to loosening of the knot 112.

[0045] By making each knot 112 formed by two metal bundles 111 intertwined at least twice, the number of knots in each knot 112 increases. Therefore, it can be ensured that the connection between the metal bundles 111 is difficult to separate when the elastic net is compressed, and its performance is much higher than that of an elastic net where the knot 112 is a single knot.

[0046] In addition, the support force of a single-layer elastic net with at least two knots in the knot portion 112 is greater than that of a double-layer elastic net with a single knot portion 112, and the contact resistance is smaller. Thus, while improving performance, the single-layer elastic net with at least two knots in the knot portion 112 can also reduce the number of nets by one compared to the double-layer elastic net with a single knot portion 112, saving more material costs.

[0047] In one example, the metal bundle 111 includes at least two metal wires, which are connected in parallel or twisted together.

[0048] Metal bundle 111 refers to a linear assembly composed of multiple metal wires, specifically stainless nickel wire or nickel-iron wire. Combining multiple metal wires to form metal bundle 111 enhances the overall compressive strength and electrical conductivity of the metal bundle 111 structure. Parallel connection refers to multiple metal wires arranged along the same extension direction without intertwining, which can be achieved through welding or mechanical crimping. Twisted connection refers to multiple metal wires spirally intertwined to form a single-strand bundle, which can be achieved using two or more strands twisted together. Increasing the contact area between the metal wires improves electrical uniformity and bending resistance.

[0049] This solution achieves higher structural strength and current carrying capacity by connecting or twisting at least two metal wires in parallel to form a metal bundle 111, while also reducing the problems of easy breakage of single-wire structures and unstable contact surfaces.

[0050] In one example, the diameter of the metal wire is not less than 0.18 mm and not more than 0.5 mm.

[0051] Specifically, the diameter of the metal wire can be 0.18mm, 0.2mm, 0.22mm, 0.24mm, 0.26mm, 0.28mm, 0.30mm, 0.32mm, 0.34mm, 0.36mm, 0.38mm, 0.40mm, 0.42mm, 0.44mm, 0.46mm, 0.48mm, or 0.5mm, etc.

[0052] Understandably, if the diameter of the metal wire is too small, the tensile strength of a single metal wire will be insufficient, and it will be prone to breakage under long-term pressure conditions; while if the diameter is too large, the overall rigidity of the metal bundle 111 will be increased, reducing the adhesion of the support mesh 110 to the surface of the electrode body 200.

[0053] By limiting the range of the wire diameter D to not less than 0.18 mm and not more than 0.5 mm, it is possible to ensure that the wire has sufficient mechanical strength to resist the pressure during the operation of the electrolytic cell, while avoiding the decrease in the flexibility of the support mesh 110 due to excessive diameter, which would affect the contact stability between the wire and the surface of the electrode body 200 or the surface of the electrode plate 300.

[0054] Please refer to the reference. Figure 2 and Figure 6 In one example, the metal bundle 111 extends along a first weaving direction and has a plurality of wave portions connected end to end along the first weaving direction. The wave portions have interconnected crests 111a and troughs 111b, and the crests 111a protrude along a second weaving direction. At least two metal bundles 111 are arranged along the second weaving direction, and the crest 111a of one of two adjacent metal bundles 111 is connected to the trough 111b of the other.

[0055] The wave section refers to the structure formed by the periodic undulation of the metal bundles 111 along their extension direction. This structure allows the support net 110 to disperse stress and avoid local stress concentration when subjected to axial pressure. The wave shape can be sinusoidal, square, or triangular, etc. The connection between the crests 111a and troughs 111b of adjacent metal bundles 111 refers to the interlocking or staggered arrangement of the undulating portions of different metal bundles 111. This can be achieved through cross-weaving or welding to fix the structure, thus forming a stable mesh structure for the support net 110.

[0056] Through the above technical solution, this application can form a multi-point contact and stress dispersion mechanism in the support net 110 through the periodic undulation structure of the wave section, thereby effectively avoiding the problem of poor contact caused by local deformation when the electrode plate 300 is under pressure, ensuring the stable flow of electrolyte and gas channels, and maintaining electrolysis efficiency.

[0057] like Figure 6 As shown, in one example, both the crest 111a and the trough 111b have two endpoints. The two adjacent metal bundles 111 are respectively the first metal bundle 1111 and the second metal bundle 1112. The two endpoints of the crest 111a of the first metal bundle 1111 are respectively intertwined with the two adjacent troughs 111b of the second metal bundle 1112.

[0058] Both crests 111a and troughs 111b can be formed by bending metal wire. Since both crests 111a and troughs 111b have two endpoints, the wave shape with crests 111a and troughs 111b is similar to a square wave.

[0059] Cross-winding refers to the fixed connection of two metal bundles 111 in an overlapping manner, which can be achieved by a metal wire weaving process. Its function is to enhance structural stability and prevent displacement between the metal bundles 111. When the crest 111a end of the first metal bundle 1111 and the trough 111b end of the second metal bundle 1112 are cross-winded, the wavy structure of the two adjacent metal bundles 111 forms an interlocking state, effectively restricting the relative sliding of the first metal bundle 1111 and the second metal bundle 1112 in the lateral and longitudinal directions, thereby maintaining the overall morphological stability of the support net 110. In addition, the two endpoints of the crest 111a in the first metal bundle 1111 intersect and wrap with the two adjacent troughs 111b of the second metal bundle 1112, so that the crest 111a of the first metal bundle 1111 can be almost opposite to the crest 111a of the second metal bundle 1112 in the second weaving direction. This makes the arrangement of the first metal bundle 1111 and the second metal bundle 1112 more neat and the number of knots 112 more, thereby improving the stability of the connection between the first metal bundle 1111 and the second metal bundle 1112.

[0060] This application also proposes an electrolysis assembly, such as Figure 7 As shown, the electrolysis assembly includes an electrode body 200, an electrode plate 300, and a support structure 100. The specific structure of the support structure 100 is as described in the above embodiments. Since this electrolysis device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be described in detail here. The support structure 100 is attached to one side of the electrode body 200, and the electrode plate 300 is attached to the side of the support structure 100 opposite to the electrode body 200.

[0061] The electrode body 200 and the support structure 100 are matched circular, rectangular, or other shaped structures. The electrode body 200 can be a nickel mesh electrode or any other material applicable to water electrolysis electrodes. The outer edge of the support structure 100 can be fixed to the electrode body 200 by welding or by using conductive adhesive. Alternatively, when a support structure is also arranged within the electrolytic cell to press the support structure 100 against the electrode body 200, the support structure 100 may not be fixed to the electrode body 200; or, in other embodiments, the support structure 100 may be fixed to the electrode body 200 at other locations, such as the center of the support structure 100. The electrode plate 300 can be made of carbon steel, nickel, or other metals.

[0062] This application also proposes an electrolytic cell, such as Figure 8 As shown, the electrolytic cell includes an electrolysis assembly. The specific structure of the electrolysis assembly is as described in the above embodiments. Since this electrolytic cell adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be described in detail here. The electrolytic cell also includes a diaphragm 400, with electrolysis assemblies respectively disposed on both sides of the diaphragm 400. The diaphragm 400 is attached to the electrode body 200, and the two electrolysis assemblies disposed on both sides of the diaphragm 400 are symmetrically arranged.

[0063] The above description is merely a preferred embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the inventive concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A support structure, characterized in that, It includes several layers of support mesh, the support mesh being woven from at least two metal bundles to form a mesh structure, the support mesh having intersecting first and second weaving directions; The support mesh has a plurality of first protrusions and a plurality of second protrusions protruding toward opposite sides, the first protrusions and the second protrusions being alternately connected, both the first protrusions and the second protrusions extending along a third direction, and both the first weaving direction and the second weaving direction being set at an angle to the third direction.

2. The support structure as described in claim 1, characterized in that, The angle between the first weaving direction and the third direction is θ1, where 30°≤θ1≤70°; the angle between the second weaving direction and the third direction is θ2, where 30°≤θ2≤70°.

3. The support structure as described in claim 1, characterized in that, The first protrusion has a first top end away from the second protrusion, and the second protrusion has a second top end away from the first protrusion. A plane parallel to the first weaving direction and passing through the first top end is defined as the first plane, and a plane parallel to the first weaving direction and passing through the second top end is defined as the second plane. The distance between the first plane and the second plane is H, where 5mm ≤ H ≤ 7.5mm. And / or, the distance between the central axes of two adjacent first protrusions is L1, 9mm≤L1≤15mm; the distance between the central axes of two adjacent second protrusions is L2, 9mm≤L2≤15mm.

4. The support structure as described in claim 1, characterized in that, The weaving density of the support mesh is not less than 0.5 kg / m2 and not more than 1.2 kg / m2.

5. The support structure as described in claim 1, characterized in that, Two adjacent metal bundles are intertwined to form a knot, and each knot is formed by the two metal bundles intertwining at least twice.

6. The support structure as described in any one of claims 1 to 5, characterized in that, The metal bundle includes at least two metal wires, which are connected in parallel or twisted together.

7. The support structure as described in any one of claims 1 to 5, characterized in that, The metal bundles extend along the first weaving direction and are provided with a plurality of wave sections connected end to end in sequence along the first weaving direction. The wave sections have interconnected peaks and troughs, and the peaks protrude along the second weaving direction. At least two metal bundles are arranged along the second weaving direction, and the peak of one of two adjacent metal bundles is connected to the trough of the other.

8. The support structure as described in claim 7, characterized in that, Both the crest and the trough have two endpoints. The two adjacent metal bundles are respectively the first metal bundle and the second metal bundle. The two endpoints of the crest of the first metal bundle are respectively intertwined with the two adjacent troughs of the second metal bundle.

9. An electrolysis assembly, characterized in that, The device includes an electrode body, an electrode plate, and a support structure as described in any one of claims 1 to 8, wherein the support structure is attached to one side of the electrode body, and the electrode plate is attached to the side of the support structure opposite to the electrode body.

10. An electrolytic cell, characterized in that, The device includes a diaphragm and an electrolysis assembly as described in claim 9, wherein the electrolysis assembly is provided on both sides of the diaphragm, the diaphragm is attached to the electrode body, and the two electrolysis assemblies provided on both sides of the diaphragm are symmetrically arranged.

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