CN220872570U - Heterojunction main grid silver thick liquid capability test half tone - Google Patents
Heterojunction main grid silver thick liquid capability test half tone Download PDFInfo
- Publication number
- CN220872570U CN220872570U CN202322667313.XU CN202322667313U CN220872570U CN 220872570 U CN220872570 U CN 220872570U CN 202322667313 U CN202322667313 U CN 202322667313U CN 220872570 U CN220872570 U CN 220872570U
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- Prior art keywords
- silver paste
- heterojunction
- main
- performance test
- performance
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- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 title claims abstract description 58
- 229910052709 silver Inorganic materials 0.000 title claims abstract description 53
- 239000004332 silver Substances 0.000 title claims abstract description 53
- 238000012360 testing method Methods 0.000 title claims abstract description 37
- 239000007788 liquid Substances 0.000 title description 2
- 238000011056 performance test Methods 0.000 claims abstract description 28
- 238000009864 tensile test Methods 0.000 claims abstract description 15
- 238000007650 screen-printing Methods 0.000 claims abstract description 10
- 238000007639 printing Methods 0.000 abstract description 13
- 239000000853 adhesive Substances 0.000 abstract description 4
- 230000001070 adhesive effect Effects 0.000 abstract description 4
- 238000010998 test method Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 241000282414 Homo sapiens Species 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 229910021419 crystalline silicon Inorganic materials 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
Abstract
The utility model discloses a heterojunction main gate silver paste performance test screen printing plate, which comprises: a heterojunction main grid silver paste performance test screen printing main body; the tensile test pattern is fixedly arranged on the heterojunction main grid silver paste performance test screen; and the contact resistance test pattern is fixedly arranged on the heterojunction main gate silver paste performance test screen. The utility model has the following beneficial effects: the performance test of the silver paste to be tested is decomposed, the adhesive force of the silver paste to the battery piece is represented by tensile force, the resistance of the silver paste is represented by line resistance and contact resistance, the printing performance of the silver paste is represented by high-width morphology, the test method is simple, the error is small, the main performance of the heterojunction main grid silver paste can be tested by only a few battery pieces, the cost is saved, and the representation accuracy and stability are improved.
Description
Technical Field
The utility model belongs to the technical field of battery silver paste testing, and particularly relates to a heterojunction main grid silver paste performance testing screen printing plate.
Background
With the development of the social industry, more and more energy is consumed by human beings. Among them, the solar energy reserves are most abundant, inexhaustible, are permanent energy sources and pollution-free, and play a significant role in developing environment-friendly society. Therefore, the use of solar energy has also become an important point of research in various countries. In recent years, the power generation efficiency of crystalline silicon solar cells has been improved year by year, and among them, heterojunction cells have been receiving attention widely in the industry for their high photoelectric conversion efficiency.
The heterojunction battery is an intrinsic amorphous film battery, the silver paste is in contact with the TCO layer of the heterojunction battery, the performance of the silver paste is directly related to the advantages and disadvantages of the grid line electrode of the solar battery, and therefore the conversion efficiency of the solar battery is affected, and therefore performance testing of the silver paste is particularly important.
At present, a plurality of groups of comparison test mechanisms with different specifications are arranged on a conductive silver paste performance test screen, and then proper silver paste printing patterns are selected according to test results, but most of the current conductive silver paste performance test screens only can test the resistance performance of the conductive silver paste, but cannot test the adhesive force and the printing performance of the silver paste to a battery piece.
For example, the utility model of patent publication No. CN218257262U discloses a screen plate for testing the performance of conductive silver paste, which tests the resistance performance of the conductive silver paste by arranging folding line segments and patterns with different line widths on one test screen plate, but only tests the resistance performance, but not the adhesion and printing performance of the silver paste to a battery piece.
Disclosure of utility model
It is an object of the present utility model to address at least the above problems and/or disadvantages and to provide at least the advantages described below.
To achieve these objects and other advantages and in accordance with the purpose of the utility model, there is provided a heterojunction main gate silver paste performance test screen comprising:
a heterojunction main grid silver paste performance test screen printing main body;
The tensile test pattern is arranged on the heterojunction main grid silver paste performance test screen;
and the contact resistance test pattern is arranged on the heterojunction main gate silver paste performance test screen.
Preferably, the tensile test pattern has a long strip shape.
Preferably, the contact resistance test pattern is in a fine grid arrangement shape.
Preferably, the tensile test patterns and the contact resistance test patterns are alternately arranged.
Preferably, the mesh number of the main body of the screen printing plate is 300-500 meshes, the wire diameter is 10-20 mu m, the yarn thickness is 10-25 mu m, and the film thickness is 5-20 mu m.
The utility model at least comprises the following beneficial effects: the performance test of the silver paste to be tested is decomposed, the adhesive force of the silver paste to the battery piece is represented by tensile force, the resistance of the silver paste is represented by line resistance and contact resistance, the printing performance of the silver paste is represented by high-width morphology, the test method is simple, the error is small, the main performance of the heterojunction main grid silver paste can be tested by only a few battery pieces, the cost is saved, and the representation accuracy and stability are improved.
Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model.
Description of the drawings:
FIG. 1 is a block diagram of a heterojunction primary gate silver paste performance test screen according to the present utility model
The specific embodiment is as follows:
The present utility model is described in further detail below with reference to the drawings to enable those skilled in the art to practice the utility model by referring to the description.
It will be understood that terms, such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
It should be noted that, in the description of the present utility model, the orientation or positional relationship indicated by the term is based on the orientation or positional relationship shown in the drawings, which are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "configured to," "engaged with," "connected to," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, may be a detachable connection, or may be integrally connected, may be mechanically connected, may be electrically connected, may be directly connected, may be indirectly connected through an intermediate medium, may be communication between two members, and may be understood in a specific manner by those skilled in the art.
Furthermore, in the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be a direct contact of the first and second features, or an indirect contact of the first and second features through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
As shown in fig. 1, a heterojunction main gate silver paste performance test screen comprises:
The heterojunction main grid silver paste performance test screen printing main body 1;
The tensile test pattern 2 is arranged on the heterojunction main grid silver paste performance test screen main body 1;
And the contact resistance test pattern 3 is arranged on the heterojunction main gate silver paste performance test screen main body 1.
Working principle: the tensile test pattern 2 on the heterojunction main grid silver paste performance test screen printing main body 1 is used for printing tensile test area electrodes; the contact resistance test pattern 3 on the heterojunction main grid silver paste performance test screen main body 1 is used for printing contact test area electrodes.
The testing process of the utility model is as follows: printing standard sample silver paste with known performance on a battery piece a by using a heterojunction main gate silver paste performance testing screen, printing main gate silver paste to be tested on a battery piece b by using another Zhang Yizhi junction main gate silver paste performance testing screen, wherein the battery piece a of the standard sample can be used as a reference, and then testing the battery piece a and the battery piece b respectively.
Welding electrodes (the welding temperatures of various factories are different and are usually 290 ℃) on the electrodes of the tensile test area under the condition of 250-450 ℃ of the battery pieces a and b, and testing the tensile force of the electrodes of the tensile test area by using a tensile tester.
And testing the aspect ratio of the electrode grid lines of the contact test areas of the battery pieces a and b by using an ultra-depth-of-field microscope.
The contact resistance of the contact test areas of the battery cells a and b was tested using a TLM meter.
The line resistance of the tensile test area electrodes of the battery cells a and b was tested using a TLM meter.
And then the performance of the main grid silver paste to be tested can be intuitively known by comparing the test results of the battery piece a and the battery piece b.
The test results are shown in the following table
As shown in the table, the method decomposes the performance test of the heterojunction main gate silver paste, characterizes the adhesive force of the silver paste to the battery piece through tensile force, characterizes the resistance of the silver paste through line resistance and contact resistance, characterizes the printing performance of the silver paste through the high-width morphology, has simple test method and small error, can test the main performance of the heterojunction main gate silver paste only by a plurality of battery pieces, saves cost and improves the characterization accuracy and stability.
In the above technical solution, the tensile test pattern 2 is in a strip shape, and has a large aspect ratio, and can be printed in a line shape when the tensile test area electrode is printed.
In the above technical solution, the contact resistance test pattern 3 is in a fine grid arrangement shape, and when printing the electrode in the contact test area, the contact resistance test pattern can be printed into a fine grid shape with a larger contact area.
In the above technical scheme, the screen main body 1 is manufactured by adopting the prior printing screen manufacturing process, the mesh number is 300-500, the wire diameter is 10-20 μm, the yarn thickness is 10-25 μm, and the film thickness is 5-20 μm. The screen printing plate body manufactured within the technological parameter range can enable the sizing agent to have better printing performance.
Although embodiments of the present utility model have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the utility model would be readily apparent to those skilled in the art, and accordingly, the utility model is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (5)
1. The heterojunction main gate silver paste performance test screen printing plate is characterized by comprising:
a heterojunction main grid silver paste performance test screen printing main body;
The tensile test pattern is arranged on the heterojunction main grid silver paste performance test screen;
and the contact resistance test pattern is arranged on the heterojunction main gate silver paste performance test screen.
2. The heterojunction main gate silver paste performance test screen of claim 1, wherein the tensile test pattern is in a strip shape.
3. The heterojunction main gate silver paste performance test screen of claim 1, wherein the contact resistance test pattern is in a fine gate arrangement.
4. The heterojunction main gate silver paste performance test screen of claim 1, wherein the tensile test patterns and the contact resistance test patterns are alternately arranged.
5. The heterojunction main grid silver paste performance test screen according to claim 1, wherein the screen main body mesh number is 300-500 mesh, the line diameter is 10-20 μm, the yarn thickness is 10-25 μm, and the film thickness is 5-20 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322667313.XU CN220872570U (en) | 2023-09-28 | 2023-09-28 | Heterojunction main grid silver thick liquid capability test half tone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322667313.XU CN220872570U (en) | 2023-09-28 | 2023-09-28 | Heterojunction main grid silver thick liquid capability test half tone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220872570U true CN220872570U (en) | 2024-04-30 |
Family
ID=90819440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322667313.XU Active CN220872570U (en) | 2023-09-28 | 2023-09-28 | Heterojunction main grid silver thick liquid capability test half tone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220872570U (en) |
-
2023
- 2023-09-28 CN CN202322667313.XU patent/CN220872570U/en active Active
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