CN217455313U - Printing screen - Google Patents

Abstract

The utility model relates to a printing half tone, printing half tone include two at least printing districts, and every printing district all is equipped with the half tone figure that is used for printing half battery, is equipped with first non-printing district between two adjacent printing districts. The printing half screen printing plate of above-mentioned this application all sets up the half screen printing plate figure that is used for printing half battery in every printing district through setting up two at least looks spaced printing districts to make every printing district homoenergetic of printing half battery of half screen printing plate independently print out. Therefore, the battery piece is not required to be cut after printing, the efficiency loss caused by battery piece slicing is avoided, the conversion efficiency of the battery assembly is improved, meanwhile, the hidden cracking of the battery piece is avoided, and the fragment rate of the battery assembly during welding is reduced.

Description

Printing screen

Technical Field

The utility model relates to a battery piece screen printing technical field especially relates to a printing half tone.

Background

As conventional fossil fuels are depleted, among the existing sustainable energy sources, solar energy is undoubtedly one of the cleanest, most widespread and most potential alternative energy sources. The solar power generation device is also called a solar cell or a photovoltaic cell, can directly convert solar energy into electric energy, and the power generation principle is based on the photovoltaic effect of a semiconductor PN junction. Solar photovoltaic is a clean energy source essential for human development due to its safety, low pollution and reproducibility as a strategic emerging energy industry, and has recently been valued and advocated by various countries.

With the continuous progress of solar high-efficiency cell research in the industry, at present, the rated working current of most single-polycrystal cell modules is higher, the average value of the rated working current is about 8A-9A, the current generates power loss when flowing through a welding strip in the module, and the loss is mainly converted into joule heat and exists in the module. So as the current increases, the loss of this part is also greater.

Compared with the 'standard' full cell, the half cell has the same voltage, and the current of the half cell is only half of that of the full cell, so that the power loss is low, and the half cell is widely applied. At present, the manufacturing process of half-cell is to print the whole cell by the screen printing technology, then to cut the whole cell with standard specification into two half-cell with the same size along the direction perpendicular to the main grid line of the cell by the laser cutting method, and then to weld and connect in series. However, efficiency loss is brought to the battery piece no matter the battery piece is subjected to lossless cutting or lossy cutting, meanwhile, hidden cracking of the battery is easily caused, and the fragment rate is high during welding.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a printing screen plate for reducing the loss of the battery plate.

In one aspect, the application provides a printing half tone, including at least two printing districts, every printing district all is equipped with the half tone figure that is used for printing half battery, is equipped with first non-printing district between two adjacent printing districts.

Above-mentioned printing half tone is through setting up two at least looks spaced printing districts, all set up the half tone figure that is used for printing half battery in every printing district, thereby make every printing district homoenergetic of printing half tone independently print out a half battery, thereby need not to carry out the cutting process to the battery piece after the printing, avoided the efficiency loss that the battery piece section brought, improved battery pack's conversion efficiency, also avoided causing the battery piece to be hidden simultaneously and split, the piece rate when having reduced battery pack welding.

The technical solution of the present application is further described below:

in one embodiment, the periphery of the printing area is provided with a second non-printing area, and the first non-printing area and the second non-printing area intersect and jointly enclose to form the printing area.

Through setting up first non-printing district with the second non-printing district can keep apart the printing district, avoids printing the battery piece and is the printing district mutual influence of difference.

In one embodiment, the first non-printed area and the second non-printed area are covered with a raised layer.

The raised layer covers the first non-printing area and the second non-printing area, so that the first non-printing area, the second non-printing area and the printing area form high bulges, the screen printing plate pattern in the printing area is higher in ink permeability, the broken grid ratio during printing is reduced, the printing speed is increased, and the service life of the screen printing plate is prolonged.

In one embodiment, the bump layer material is tin thin paper.

In one embodiment, the width of the first non-printed area is 30mm to 40 mm.

In one embodiment, the screen pattern is the same for each print zone.

In one embodiment, the screen patterns of at least two of the printing zones are different.

By arranging at least two printing areas and configuring the screen printing plate graphs in different printing areas into different configurations, half batteries with different graphs can be printed, and the universality of the printing screen printing plate is improved.

In one embodiment, the shape of the printed area is rectangular.

In one embodiment, the screen pattern includes a main gate line parallel to the short side of the printing region, and a sub-gate line perpendicularly intersecting the main gate line.

In one embodiment, the number of the main grid lines is multiple, and the main grid lines are arranged at intervals along the long edge of the printing area; and/or the number of the secondary grid lines is multiple, and the plurality of secondary grid lines are arranged at intervals along the short edge of the printing area.

The utility model discloses a printing half tone has following advantage at least:

1. through setting up two at least looks spaced printing districts, all set up the half screen printing plate figure that is used for printing half battery in every printing district to make every printing district homoenergetic of printing screen printing plate independently print out a half battery, thereby need not to carry out the cutting process to the battery piece after the printing, avoided the battery piece section to bring the efficiency loss, improved battery pack's conversion efficiency.

2. The hidden cracking of the battery piece caused by laser slicing is avoided, and the fragment rate of the battery pack during welding is reduced.

3. The raised layer covers the first non-printing area and the second non-printing area, so that the first non-printing area, the second non-printing area and the printing area form high bulges, the screen printing plate pattern in the printing area is higher in ink permeability, the broken grid ratio during printing is reduced, the printing speed is increased, and the service life of the screen printing plate is prolonged.

4. By arranging at least two printing areas and configuring the screen printing plate graphs in different printing areas into different configurations, half batteries with different graphs can be printed, and the universality of the printing screen printing plate is improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a printing screen according to an embodiment;

fig. 2 is a schematic structural diagram of a printing screen according to another embodiment.

Description of reference numerals:

10. a printing area; 20. a first non-printed area; 30. a second non-printed area.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

An embodiment of the application provides a printing half tone screen for printing the electrode grid line of half battery. Specifically, referring to fig. 1, fig. 1 shows a schematic structural diagram of a printing screen according to an embodiment of the present invention. The printing screen of an embodiment comprises at least two printing areas 10, each printing area 10 is provided with a screen pattern for printing half cells, and a first non-printing area 20 is arranged between two adjacent printing areas 10. Understandably, the first non-printing region 20 is not provided with a halftone pattern.

Specifically, the traditional screen printing method is used for printing the battery piece in a whole manner, the printed whole battery needs to be cut by laser to obtain a half battery, however, efficiency loss can be brought to the battery piece no matter the battery piece is cut in a nondestructive mode or in a destructive mode, meanwhile, the battery piece is prone to being hidden and cracked, and accordingly the fragment rate is high during welding.

The application printing screen printing plate is through setting up two at least looks spaced printing districts 10, all set up the screen printing plate figure that is used for printing half battery in every printing district 10, thereby make every printing district 10 homoenergetic of printing screen printing plate independently print out half battery, thereby need not to carry out the cutting process to the battery piece after the printing, the efficiency loss that the battery piece section brought has been avoided, battery pack's conversion efficiency has been improved, also avoided causing the battery piece to be hidden simultaneously and split, piece rate when having reduced battery pack welding.

Preferably, in this embodiment, the printing screen is provided with two printing areas 10, so as to print two half-cells simultaneously. It will be appreciated that in other embodiments the printing screen can be provided with more printing areas 10, for example three, four or five, etc., to enable more half-cells to be printed simultaneously.

With continued reference to fig. 1, a second non-printing area 30 is provided around the periphery of the printing area 10, i.e. the edge region of the printing screen is provided with the second non-printing area 30. Understandably, the second non-printing area 30 is also not provided with a halftone pattern. The first non-printed area 20 intersects the second non-printed area 30 and collectively encloses the printed area 10. The first non-printing area 20 and the second non-printing area 30 can be arranged to isolate the printing area 10, so that the printed battery pieces are prevented from being influenced by different printing areas.

Further, both the first non-printed area 20 and the second non-printed area 30 are covered with a raised layer. Called as the base, the protruding layer may be an adhesive tape, and the adhesive tape covers the first non-printed area 20 and the second non-printed area 30 by means of adhesion. Preferably, the material of the bump layer may be tin thin paper. The first non-printing area 20 and the second non-printing area 30 are covered with the protruding layers, so that the first non-printing area 20, the second non-printing area 30 and the printing area 10 form high protrusions, the screen printing plate pattern of the printing area 10 is enabled to have stronger ink permeability, the grid breaking ratio during printing is reduced, the printing speed is increased, and the service life of the screen printing plate is prolonged.

Further, the width of the first non-printed area 20 is 30mm to 40 mm. The width of the first non-printed area 20 refers to the distance between two adjacent printed areas 10. When the width of the first non-printing area 20 is smaller than 30mm, the adjacent two printing areas 10 are easily influenced with each other during printing, and when the width of the first non-printing area 20 is larger than 40mm, the gap between the adjacent two printing areas 10 is easily caused to be too large, so that the size of the printing screen is too large, the occupied space is large, and materials are wasted, and by configuring the width of the first non-printing area 20 to be 30mm-40mm, the adjacent two printing areas 10 are prevented from being influenced with each other during printing, and the size of the printing screen is also prevented from being too large. Preferably, the width of the first non-printed area 20 is 35mm

Referring to fig. 1, each of the printing areas 10 is rectangular in shape in the present embodiment. The screen pattern includes a main gate line parallel to the short side of the printing region 10, and a sub-gate line perpendicularly intersecting the main gate line. The main grid lines are used for printing electrode main grids of the battery pieces, and the auxiliary grid lines are used for printing electrode auxiliary grids of the battery pieces. Further, the number of the main gate lines is multiple, and the multiple main gate lines are arranged at intervals along the long edge of the printing region 10; the number of the sub-grid lines is multiple, and the plurality of sub-grid lines are arranged at intervals along the short side of the printing area 10. Specifically, the screen pattern of the printing area is the same as the electrode grid line pattern of the battery piece to be printed. Furthermore, the printing screen printing plate can be used for printing front main and auxiliary grids of the battery piece and can also be used for printing back main and auxiliary grids.

Referring to fig. 1, in one embodiment, the screen patterns of the print zone 10 are all the same. That is, the number and the interval of the halftone pattern main grid lines of each printing region 10 are the same. The number and the interval of the auxiliary grid lines are the same, so that at least two identical half batteries can be printed at the same time through one printing screen.

Referring to fig. 2, in another embodiment, the screen patterns of different printing zones 10 may also be different. For example, the number of halftone pattern main grid lines or the spacing of the main grid lines in different printing regions 10 is different. Or the number of the secondary grid lines and the intervals of the secondary grid lines are different, so that at least two half batteries with different patterns can be printed by one printing screen plate at the same time. The traditional screen printing screen can only print a battery piece with one pattern, and the printing screen of the embodiment is provided with at least two printing areas 10, and screen patterns of different printing areas 10 are configured differently, so that half batteries with different patterns can be printed, and the universality of the printing screen is improved.

The utility model discloses a printing half tone has following advantage at least:

1. through setting up two at least looks spaced printing district 10, all set up the half screen printing plate figure that is used for printing half battery in every printing district 10 to make every printing district 10 homoenergetic of printing screen printing plate independently print out half battery, thereby need not to carry out the cutting process to the battery piece after the printing, avoided the efficiency loss that the battery piece section brought, improved battery pack's conversion efficiency.

2. The hidden cracking of the battery piece caused by laser slicing is avoided, and the fragment rate of the battery pack during welding is reduced.

3. The first non-printing area 20 and the second non-printing area 30 are covered with the protruding layers, so that the first non-printing area 20, the second non-printing area 30 and the printing area 10 form high protrusions, the screen printing plate pattern of the printing area 10 is enabled to have stronger ink permeability, the grid breaking ratio during printing is reduced, the printing speed is increased, and the service life of the screen printing plate is prolonged.

4. By arranging at least two printing areas 10 and configuring the screen printing plate patterns of different printing areas 10 to be different, half batteries with different patterns can be printed, and the universality of the printing screen printing plate is improved.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent several embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Claims (10)

1. A printing screen is characterized by comprising at least two printing areas, wherein each printing area is provided with a screen pattern used for printing a half cell, and a first non-printing area is arranged between every two adjacent printing areas.

2. The printing screen of claim 1, wherein a second non-printing region is provided around the periphery of the printing region, and the first non-printing region and the second non-printing region intersect and jointly enclose to form the printing region.

3. The printing screen of claim 2, wherein the first and second non-printing regions are each covered with a raised layer.

4. A printing screen according to claim 3, wherein the material of the raised layer is tin tissue.

5. The printing screen of claim 1, wherein the width of the first non-printing region is from 30mm to 40 mm.

6. The printing screen of claim 1, wherein the screen pattern of each of the printing zones is the same.

7. The printing screen of claim 1, wherein the screen patterns of at least two of the printing zones are different.

8. The printing screen of claim 1, wherein the printing zone is rectangular in shape.

9. The printing screen of claim 8, wherein the screen pattern comprises main grid lines parallel to the short sides of the printing area, and sub-grid lines perpendicularly intersecting the main grid lines.

10. The printing screen of claim 9, wherein the number of the main grid lines is plural, and the plural main grid lines are arranged at intervals along a long side of the printing area; and/or the number of the secondary grid lines is multiple, and the plurality of secondary grid lines are arranged at intervals along the short edge of the printing area.

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