Metal net

Abstract

The utility model discloses a metal net which is of a grid structure formed by a plurality of integrally arranged metal lines in a closed mode, the aperture ratio of the metal net is larger than or equal to 95%, the average area of each aperture of the metal net is smaller than 45 mm < 2 >, and the line width of the metal lines larger than or equal to 50% in all the metal lines of the metal net is smaller than 0.05 mm. The metal net provided by the utility model has the advantages of small metal wire body, large aperture ratio and small shading area.

Description

Technical Field

[0001] The utility model relates to the field of metal mesh, in particular to a metal mesh. Background Art

[0002] Existing metal meshes generally have a grid structure, and the metal mesh has multiple metal lines arranged in an intersecting manner; the metal mesh has a variety of materials, and the metal meshes made of different metal materials have different performances and can be used in different scenarios; for example, the metal mesh made of steel can be used in the construction field for reinforcement or as a fence; the metal mesh made of nickel can be used in printing or perforated film manufacturing and other fields; the metal mesh made of copper or silver can be used on photovoltaic cells in the photovoltaic industry, and the intersecting metal lines of the metal mesh can play the role of main grid lines and fine grid lines, realizing the convergence and output of current generated by the photovoltaic cells.

[0003] Existing metal meshes are generally manufactured by weaving or silver paste printing. When manufacturing metal meshes using these existing processes, the wider the metal lines of the metal mesh and the greater the density of the metal lines of the metal mesh, the more difficult the processing becomes. In addition, the metal meshes manufactured using the existing processes have a large shading area, which is not conducive to improving the performance of photovoltaic cells.

[0004] In view of the existence of the above problems, it is necessary to study a metal mesh with a small shading area. Utility Model Content

[0005] The purpose of the utility model is to provide a metal mesh with a small shading area.

[0006] In order to achieve the above objectives, the solution of the present invention is:

[0007] A metal mesh having a mesh structure formed by a plurality of metal lines arranged in an integral manner, wherein the opening rate of the metal mesh is greater than or equal to 95%, and the average area of each opening of the metal mesh is less than 45mm 2 , the line width of greater than or equal to 50% of all the metal lines of the metal mesh is less than 0.05 mm.

[0008] The metal wires are made of copper, silver, aluminum, nickel or alloy metal.

[0009] The surface of the metal wire is plated with a coating.

[0010] The plating layer is a copper plating layer, a silver plating layer, a tin plating layer or a nickel plating layer.

[0011] The opening rate of the metal mesh is greater than or equal to 97%.

[0012] Among all the metal lines of the metal mesh, greater than or equal to 50% of the metal lines have a line width less than 0.02 mm.

[0013] The widths of the metal lines of the metal mesh are the same, completely different, or different.

[0014] The multiple metal lines of the metal mesh include multiple first metal lines and multiple second metal lines that cross each other; the number density of the first metal lines is 5 to 15 lines / cm, and the line width of the first metal lines is equal to or less than 0.035 mm; the number density of the second metal lines is 0.2 to 4 lines / cm, and the line width of the second metal lines is greater than 0.035 mm.

[0015] The multiple metal lines of the metal mesh also include at least one third metal line passing between the first metal lines, the line width of the third metal line is greater than the line width of the first metal line, and when the number of third metal lines is greater than or equal to two, at least one first metal line is spaced between adjacent third metal lines.

[0016] When the number of the third metal lines is greater than or equal to two, the widths of the third metal lines are the same, completely different, or not identical.

[0017] The plurality of metal lines of the metal mesh further include frame metal lines with a line width greater than or equal to 0.2 mm, and the frame metal lines are fixedly connected to each first metal line and / or each second metal line.

[0018] After adopting the above solution, the metal mesh of the utility model is a grid structure formed by a plurality of metal lines arranged in an integral manner. The opening rate of the metal mesh is greater than or equal to 95%, and the average area of each opening of the metal mesh is less than 45mm 2 , greater than or equal to 50% of all the metal lines of the metal mesh have a line width of less than 0.05 mm; such a setting makes the shading area of the metal mesh small, which is beneficial to ensuring the power generation efficiency of the photovoltaic cell after the metal mesh and the photovoltaic cell are composited. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of the metal mesh of Example 1 of the present utility model.

[0020] Figure 2 This is a schematic structural diagram of the metal mesh of Example 2 of the present utility model.

[0021] Figure 3 This is a schematic structural diagram of the metal mesh of Example 3 of the present utility model.

[0022] Figure 4 This is a schematic structural diagram of the metal mesh of the fourth embodiment of the present utility model.

[0023] Figure 5Schematic diagram of the first method for preparing the metal mesh of the present invention Figure 1 .

[0024] Figure 6 Schematic diagram of the first method for preparing the metal mesh of the present invention Figure 2 .

[0025] Figure 7 Schematic diagram of the second preparation method of the metal mesh of the utility model Figure 1 .

[0026] Figure 8 Schematic diagram of the second preparation method of the metal mesh of the utility model Figure 2 .

[0027] Figure 9 This is a schematic diagram of the third preparation method of the metal mesh of the present invention.

[0028] Figure 10 This is a schematic diagram of a metal cutting tool used in the third method for preparing the metal mesh of the present invention.

[0029] Figure 11 for Figure 10 Enlarged view of point A.

[0030] Figure 12 This is a schematic diagram of the fourth preparation method of the metal mesh of the present invention.

[0031] Figure 13 This is a schematic diagram of a metal cutting tool used in the fourth method for preparing metal mesh of the present invention.

[0032] Figure 14 for Figure 13 Enlarged view of point B.

[0033] Description of labels:

[0034] Metal mesh a, metal line a0, first metal line a1, second metal line a2, third metal line a3, frame metal line a4, opening a5, metal mesh coil a', metal sheet a''

[0035] Melting device 11, mold roller 12, forming grid 121, line forming groove 1211, cooling roller 13,

[0036] Main metal plating tank 21, mother mold 22, recessed grid 221, molding line 2211, stripping device 23,

[0037] Metal mesh cutting tool 31, tool body 311, mesh cutting part 312, tool body 3120, cutting edge 3121, groove 3122, smooth roller 32, operating platform 32'. DETAILED DESCRIPTION

[0038] like Figures 1 to 14 As shown, the utility model discloses a metal mesh a, which is a mesh structure formed by a plurality of metal lines a0 arranged in an integral manner. The opening rate of the metal mesh a is greater than or equal to 95%, and the average area of each opening a5 of the metal mesh a is less than 45mm 2 , greater than or equal to 50% of all the metal lines a0 of the metal mesh a have a line width of less than 0.05 mm; the material of the metal lines a0 can be copper, silver, aluminum, nickel or an alloy metal; in addition, the surface of the metal lines a0 can be plated with a coating, and the coating can be copper plating, silver plating, tin plating or nickel plating; in addition, the cross-section of the metal lines a0 can be circular, elliptical, triangular or polygonal, and the shape is not limited. The line widths of multiple metal lines a0 can be the same, completely different or different.

[0039] The opening rate of the metal mesh a of the present invention is greater than or equal to 95%, and the average area of each opening a5 of the metal mesh a is less than 45mm 2 , greater than or equal to 50% of all the metal lines a0 of the metal mesh a have a line width less than 0.05 mm; such a setting makes the shading area of the metal mesh a small, which is beneficial to ensuring the power generation efficiency of the photovoltaic cell after the metal mesh a is combined with the photovoltaic cell.

[0040] In order to further explain the technical solution of the present invention, the present invention will be described in detail below through specific embodiments.

[0041] Example 1:

[0042] Cooperate Figure 1 As shown, in the first embodiment of the present invention, the metal mesh a of the present invention is in the shape of a honeycomb mesh, the opening rate of the metal mesh a is 95%, and the average area of each opening a5 of the metal mesh a is 40 mm. 2 , the line width of the metal lines a0 greater than or equal to 50% of all the metal lines a0 of the metal mesh a is 0.045 mm, and the material of the metal mesh a is copper.

[0043] Example 2:

[0044] Cooperate Figure 2 As shown, in the second embodiment of the present invention, the multiple metal lines a0 of the metal mesh a of the present invention include a plurality of first metal lines a1 and a plurality of second metal lines a2 that cross each other, the number density of the first metal lines a1 is 5 to 15 lines / cm, the line width of the first metal lines a1 is equal to or less than 0.035 mm, the number density of the second metal lines a2 is 0.2 to 4 lines / cm, and the line width of the second metal lines a2 is greater than 0.035 mm.

[0045] In the second embodiment of the present invention, the specific parameters of the metal mesh a are: the opening rate of the metal mesh a is 97%, the average area of each opening a5 of the metal mesh a is 30mm 2 The number density of the first metal lines a1 of the metal mesh a is 5 lines / cm, the line width of the first metal lines a1 is 0.025 mm, the number density of the second metal lines a2 is 4 lines / cm, the line width of the second metal lines a2 of the metal mesh a is 0.04 mm; the material of the metal mesh a is nickel.

[0046] Example 3:

[0047] Cooperate Figure 3 As shown, in the third embodiment of the present invention, the multiple metal lines a0 of the metal mesh a of the present invention include multiple first metal lines a1 and multiple second metal lines a2 that cross each other, and at least one third metal line a3 that passes between the first metal lines a1; the number density of the first metal lines a1 is 5 to 15 lines / cm, and the line width of the first metal lines a1 is equal to or less than 0.035 mm; the number density of the second metal lines a2 is 0.2 to 4 lines / cm, and the line width of the second metal lines a2 is greater than 0.035 mm; the line width of the third metal lines a3 is greater than the line width of the first metal lines a1, and when the number of the third metal lines a3 is greater than or equal to two, at least one first metal line a1 is spaced between adjacent third metal lines a3, and the line widths of the third metal lines a3 can be the same, completely different, or different. Among them, since the third metal line a3 has a larger line width, the third metal line a3 can play a supporting role in the metal mesh a, increase the strength of the metal mesh a, and effectively prevent the problem of the metal line a0 breaking during the use of the metal mesh a.

[0048] In the third embodiment of the present invention, the specific parameters of the metal mesh a are as follows: the opening rate of the metal mesh a is 96%, and the average area of each opening a5 of the metal mesh a is 35mm 2 The number density of the first metal lines a1 of the metal mesh a is 10 lines / cm, the line width of the first metal lines a1 is 0.03 mm, the number density of the second metal lines a2a12 of the metal mesh a is 2 lines / cm, the line width of the second metal lines a2 is 0.05 mm, the line width of the third metal lines a0 of the metal mesh a is 0.045 mm, and three first metal lines a1 are spaced between adjacent third metal lines a0; the material of the metal mesh a is silver.

[0049] Example 4:

[0050] Cooperate Figure 4As shown, in the fourth embodiment of the present invention, the metal mesh a of the present invention comprises a plurality of intersecting first metal lines a1 and a plurality of second metal lines a2, and frame metal lines a4 fixedly connected to each of the first metal lines a1 and / or each of the second metal lines a2. The number density of the first metal lines a1 is 5 to 15 lines / cm, and the line width of the first metal lines a1 is equal to or less than 0.035 mm. The number density of the second metal lines a2 is 0.2 to 4 lines / cm, and the line width of the second metal lines a2 is greater than 0.035 mm. The line width of the frame metal lines a4 is greater than or equal to 0.2 mm. The larger line width of the frame metal lines a4 allows the third metal lines a3 to provide support within the metal mesh a, thereby increasing the strength of the metal mesh a and effectively preventing the metal lines a0 from breaking during use. Furthermore, the frame metal lines a4 on the metal mesh a can be trimmed during use.

[0051] In the fourth embodiment of the present invention, the specific parameters of the metal mesh a are as follows: the opening rate of the metal mesh a is 98%, the average area of each opening a5 of the metal mesh aa is 25mm 2 The number density of the first metal lines a1 of the metal mesh a is 15 lines / cm, the width of the first metal lines a1 is 0.015 mm, the number density of the second metal lines a2 of the metal mesh a is 0.2 lines / cm, the width of the second metal lines a2 is 0.06 mm, and the width of the frame metal lines a4 of the metal mesh a is 0.3 mm; the material of the metal mesh a is nickel.

[0052] It should be noted that the metal mesh a of the present invention can be manufactured by cutting, electroplating, or casting. Several methods for manufacturing the metal mesh a of the present invention are described in detail below.

[0053] The first manufacturing method of the metal mesh a of the present invention:

[0054] Cooperate Figures 5 and 6 As shown, the first manufacturing method of the metal mesh a of the present invention includes the following steps:

[0055] Step 1: Melt the metal raw material into a metal melt in the melting device 11, and scrape the metal melt onto the surface of the mold roller 12, so that the metal melt fills the recessed forming grid 121 on the surface of the mold roller 12; wherein the structure of the forming grid 121 corresponds to the structure of the metal mesh a to be manufactured; specifically, the forming grid 121 is formed by a plurality of line forming grooves 1211, and each line forming groove 1211 is interconnected, the opening rate of the forming grid 121 is greater than or equal to 95%, and the average area of each mesh of the forming grid 121 is less than 45mm 2, the width of more than or equal to 50% of all the line forming grooves 1211 of the forming grid 121 is less than or equal to 0.5 mm;

[0056] Step 2: Under the action of the cooling roller 13, the metal melt filling the forming grid 121 in the depression on the surface of the mold roller 12 is cooled to form a metal mesh a;

[0057] Step 3: Peeling the formed metal mesh a off the mold roller 12 .

[0058] Steps 1 and 2 are performed in a vacuum environment or a nitrogen atmosphere. In step 3, after the metal mesh a is peeled off the mold roller 12, the metal mesh a can be directly rolled up to obtain a metal mesh coil a', or the metal mesh a can be first laminated with the support layer and then rolled up together to obtain a metal mesh coil a'.

[0059] The second manufacturing method of the metal mesh a of the present invention:

[0060] Cooperate Figures 7 and 8 As shown, the second manufacturing method of the metal mesh a of the present invention includes the following steps:

[0061] Step 1: Immerse a master mold 22 having a prefabricated recessed grid 221 on its surface in a main metal electroplating tank 21 containing a main metal electroplating solution; wherein the structure of the recessed grid 221 of the master mold 22 corresponds to the structure of the metal mesh a to be manufactured; the recessed grid 221 of the master mold 22 is formed by a plurality of enclosed molding lines 2211, which are located at the bottom of the recessed grid 221 of the master mold 22, and the molding lines 2211 are made of metal. The surface of the master mold 22 other than the molding lines 2211 is made of a non-conductive material; the opening rate of the recessed grid 221 is greater than or equal to 95%, and the average area of each mesh of the recessed grid 221 is less than 45 mm 2 , the width of more than or equal to 50% of the molding lines 2211 of the recessed grid 221 is less than or equal to 0.5 mm;

[0062] Step 2: The master mold 22 is operated and electroplated, so that the metal in the main metal electroplating solution in the main metal electroplating tank 21 is deposited in the recessed grid 221 of the master mold 22, thereby forming a metal mesh a having a grid structure;

[0063] Step 3: The formed metal mesh a is peeled off from the mother mold 22 through the peeling device 23 and transported to the outside of the main metal electroplating tank 21.

[0064] The master mold 22 can be a roller or flat strip structure; the recessed grid 221 can be distributed continuously or discontinuously on the surface of the master mold 22. In step 2, after the formed metal mesh a is peeled from the master mold 22, the metal mesh a is placed in at least one electroplating tank containing a coating metal plating solution for electroplating. The metal in the coating metal plating solution in the electroplating tank is plated onto the surface of the metal mesh a, thereby forming a coated metal mesh a. In step 3, after the metal mesh a is peeled from the master mold 22, the metal mesh a can be directly rolled up to form a metal mesh coil a', or the metal mesh a can be first laminated with a support layer and then rolled up together to form a metal mesh coil a'.

[0065] The third manufacturing method of the metal mesh a of the present invention:

[0066] Cooperate Figures 9 to 11 As shown, the third manufacturing method of the metal mesh a of the present invention includes the following steps:

[0067] Step S1: Feed the metal sheet a'' into a cutting device, which includes a smooth roller 32 and a metal mesh cutting tool 31. The metal mesh cutting tool 31 is arranged opposite to the smooth roller 32. The metal mesh cutting tool 31 includes a tool body 311 and a grid cutting part 312 arranged on the outside of the tool body 311. The tool body 311 is a cylindrical structure. The structure of the grid cutting part 312 corresponds to the structure of the metal mesh a to be manufactured; specifically, the grid cutting part 312 is a closed grid structure composed of a plurality of blade bodies 3120, and the structure of each blade body 3120 has two separated cutting edges 3121 and a groove 3122 located between the two cutting edges 3121, and the grooves 3122 of each blade body 3120 are interconnected; the opening rate of the grid cutting part 312 is greater than or equal to 95%, and the average area of each mesh of the grid cutting part 312 is less than 45mm 2 , the width of the grooves 3122 of more than or equal to 50% of all the blades 3120 of the grid cutting portion 312 is less than or equal to 0.5 mm;

[0068] Step S2: driving the smooth roller 32 and the metal mesh cutting tool 31 of the cutting device to rotate relative to each other, so that the metal sheet a'' is cut by each blade 3120 of the grid cutting portion 312 of the metal mesh cutting tool 31 to form a metal mesh a having a grid structure;

[0069] Step S3: first peeling the formed metal mesh a off the cutting device, and then rolling up the metal mesh a to obtain a metal mesh coil a'.

[0070] Wherein, in step S3, after the metal mesh a is peeled off from the cutting device, the peeled metal mesh a can be compounded with the support layer and then rolled up to obtain a metal mesh coil a'.

[0071] The fourth manufacturing method of the metal mesh a of the present invention:

[0072] Cooperate Figures 12 to 14 As shown, the fourth manufacturing method of the metal mesh a of the present invention includes the following steps:

[0073] Step S1': feeding the metal sheet a'' into a cutting device, which includes an operating platform 32' and a metal mesh cutting tool 31, the metal mesh cutting tool 31 is arranged opposite to the operating platform 32', the metal mesh cutting tool 31 includes a tool body 311, and a grid cutting part 312 arranged on the same side of the tool body 311, the tool body 311 is a plate-shaped structure, and the structure of the grid cutting part 312 corresponds to the structure of the metal mesh a to be manufactured; specifically, the grid cutting part 312 is a closed grid structure composed of a plurality of blade bodies 3120, each of which has two separated cutting edges 3121 and a groove 3122 located between the two cutting edges 3121, and the grooves 3122 of each blade body 3120 are interconnected; the opening rate of the grid cutting part 312 is greater than or equal to 95%, and the average area of each mesh of the grid cutting part 312 is less than 45mm 2 , the width of the grooves 3122 of more than or equal to 50% of all the blades 3120 of the grid cutting portion 312 is less than or equal to 0.5 mm;

[0074] Step S2': driving the smooth roller 32 and the metal mesh cutting tool 31 of the cutting device to rotate relative to each other, so that the metal sheet a'' is cut by each blade 3120 of the grid cutting portion 312 of the metal mesh cutting tool 31 to form a metal mesh a having a grid structure;

[0075] Step S3 ′: first peeling the formed metal mesh a from the cutting device, and then rolling up the metal mesh a to obtain a metal mesh coil a′.

[0076] Wherein, in step S3', after the metal mesh a is peeled off from the cutting device, the peeled metal mesh a can be compounded with the support layer and then rolled up to obtain a metal mesh coil a'.

[0077] The present invention utilizes the four aforementioned preparation methods to conveniently and precisely prepare metal mesh a. Specifically, the present invention can produce metal mesh a with varying structures by adjusting the structure of the forming grid 121 of the mold roller 12, the recessed grid 221 of the master mold 22, and the grid cutting portion 312 of the metal mesh cutting tool 31. Furthermore, the forming grid 121 of the mold roller 12, the recessed grid 221 of the master mold 22, and the grid cutting portion 312 of the metal mesh cutting tool 31 can be precisely manufactured, resulting in the prepared metal mesh a having advantages such as small metal lines a0, a large open area ratio, and a small light-shielding area. Furthermore, the metal mesh a prepared by the four aforementioned preparation methods is a one-piece structure with excellent structural stability.

[0078] The above embodiments and drawings do not limit the product form and style of the present invention. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present invention.

Claims

1. A metal mesh, characterized in that: The metal mesh is a grid structure formed by a plurality of metal lines arranged in an integral manner. The opening rate of the metal mesh is greater than or equal to 95%, and the average area of each opening of the metal mesh is less than 45mm. 2 , the line width of greater than or equal to 50% of all the metal lines of the metal mesh is less than 0.05 mm.

2. The metal mesh according to claim 1, wherein: The metal wires are made of copper, silver, aluminum, nickel or alloy metal.

3. The metal mesh according to claim 1, wherein: The surface of the metal wire is plated with a coating.

4. The metal mesh according to claim 3, wherein: The plating layer is a copper plating layer, a silver plating layer, a tin plating layer or a nickel plating layer.

5. The metal mesh according to claim 1, wherein: The opening rate of the metal mesh is greater than or equal to 97%.

6. The metal mesh according to claim 1, wherein: Among all the metal lines of the metal mesh, greater than or equal to 50% of the metal lines have a line width less than 0.02 mm.

7. The metal mesh according to claim 1, wherein: The widths of the metal lines of the metal mesh are the same, completely different, or different.

8. The metal mesh according to claim 1, wherein: The multiple metal lines of the metal mesh include multiple first metal lines and multiple second metal lines that cross each other; the number density of the first metal lines is 5 to 15 lines / cm, and the line width of the first metal lines is equal to or less than 0.035 mm; the number density of the second metal lines is 0.2 to 4 lines / cm, and the line width of the second metal lines is greater than 0.035 mm.

9. The metal mesh according to claim 8, wherein: The multiple metal lines of the metal mesh also include at least one third metal line passing between the first metal lines, the line width of the third metal line is greater than the line width of the first metal line, and when the number of third metal lines is greater than or equal to two, at least one first metal line is spaced between adjacent third metal lines.

10. The metal mesh according to claim 9, wherein: When the number of the third metal lines is greater than or equal to two, the widths of the third metal lines are the same, completely different, or not identical.

11. The metal mesh according to claim 8, wherein: The plurality of metal lines of the metal mesh further include frame metal lines with a line width greater than or equal to 0.2 mm, and the frame metal lines are fixedly connected to each first metal line and / or each second metal line.

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