Preparation method of to-be-tested sample and bonding strength testing method of to-be-tested sample

Abstract

The invention relates to a preparation method of a to-be-tested sample and a bonding strength testing method of the to-be-tested sample. The preparation method of the to-be-tested sample comprises the following steps: S1, providing a gluing mold, to-be-tested glue and a first to-be-tested piece, the gluing mold is provided with a gluing hole, and the first to-be-tested piece is a to-be-tested glue film or a to-be-tested battery; s2, filling glue to be detected in the gluing holes; s3, obtaining a second to-be-tested piece after the to-be-tested glue is cured, and attaching the second to-be-tested piece to the first to-be-tested piece to obtain a to-be-tested sample. Compared with the prior art in which a to-be-tested sample is prepared in a mode of printing glue through a screen plate, in the mode of preparing the to-be-tested glue and the to-be-tested glue film or the to-be-tested glue and the to-be-tested battery by arranging the gluing mold with the gluing holes, the gluing mold is simple in structure and easy to manufacture, the production cost of an enterprise is reduced, and the production efficiency is improved. And cost reduction and efficiency improvement of enterprises are facilitated, operation is convenient, general popularization in operators is facilitated, and wide applicability is achieved.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic power generation technology, and in particular to a method for preparing a sample to be tested and a method for testing its bonding strength. Background Art

[0002] With the rise of new energy, photovoltaic modules are being used more and more widely. Busbarless battery modules in photovoltaic modules are gradually becoming the mainstream. Busbarless battery modules are usually placed outdoors for use. During use, they will face more complex environmental conditions, such as temperature changes and wind speed changes. During environmental changes, the bonding strength between the glue and the film, and between the glue and the battery in the busbarless battery module is crucial.

[0003] Before testing the bonding strength between glue and film, and between glue and battery, it is necessary to prepare samples to be tested, including glue and film, and between glue and battery. In the process of preparing the samples to be tested, screen printing glue is usually used, which increases the cost of the enterprise and is not conducive to the cost reduction and efficiency improvement of the enterprise. Summary of the invention

[0004] Based on this, it is necessary to provide a method for preparing a sample to be tested and a method for testing its bonding strength in order to address the problem of high production cost in the current process of preparing the sample to be tested.

[0005] A method for preparing a sample to be tested, the method comprising the following steps:

[0006] S1, providing a glue coating mold, glue to be tested and a first test object, wherein the glue coating mold is provided with a glue coating hole, and the first test object is a glue film to be tested or a battery to be tested;

[0007] S2, filling the glue to be tested into the glue coating hole;

[0008] S3, obtaining a second test piece after the test glue is cured, and attaching the second test piece to the first test piece to obtain the test sample.

[0009] In one embodiment, a first release film and a cover plate are also provided in step S1, and the following steps are further included between step S2 and step S3:

[0010] The first release film is disposed on the glue coating mold, and the first release film cover at least covers the glue coating hole;

[0011] The cover plate is arranged above the first release film to squeeze the glue to be tested below the first release film.

[0012] In one embodiment, when the first test object is the test adhesive film, a first substrate glass is also provided in step S1, and step S2 specifically includes the following steps:

[0013] S21, placing the glue coating mold on the first substrate glass;

[0014] S22, placing the glue to be tested on the first substrate glass through the glue coating hole.

[0015] In one embodiment, a second release film and a first back sheet are also provided in step S1, and step S3 specifically includes the following steps:

[0016] S31, waiting for the glue to be tested to solidify to form the second test piece, and removing the glue coating mold;

[0017] S32, covering a portion of the glue to be tested with the second release film;

[0018] S33, the adhesive film to be tested is disposed on the second release film, and a portion of the adhesive film to be tested directly overlaps with the glue to be tested;

[0019] S34, disposing the first back plate on a side of the adhesive film to be tested that is away from the second release film, to obtain the sample to be tested.

[0020] In one embodiment, when the first device to be tested is the battery to be tested, a second substrate glass and a first adhesive film are also provided in step S1, and step S2 specifically includes the following steps:

[0021] S21, using opposite sides of the first adhesive film to respectively bond the second substrate glass and the battery to be tested;

[0022] S22, placing the glue coating mold on the battery to be tested;

[0023] S23, placing the glue to be tested on the battery to be tested through the glue application hole.

[0024] In one embodiment, a third release film, a second adhesive film and a second back sheet are also provided in step S1, and step S3 specifically includes the following steps:

[0025] S31, after the glue to be tested is cured, the glue coating mold is removed to obtain the second piece to be tested that is attached to the first piece to be tested;

[0026] S32, covering a portion of the glue to be tested with the third release film;

[0027] S33, the second adhesive film is disposed on the third release film, and a portion of the second adhesive film directly overlaps with the glue to be tested;

[0028] S34, disposing the second back plate on a side of the second adhesive film away from the third release film to obtain the sample to be tested.

[0029] In one embodiment, the glue coating mold is made of tempered glass.

[0030] In one embodiment, the glue coating hole penetrates the glue coating mold along the thickness direction of the glue coating mold.

[0031] The above-mentioned method for preparing the sample to be tested is to fill the glue to be tested into the glue coating hole in the glue coating mold, and then obtain the second piece to be tested after the glue to be tested is cured, and the second piece to be tested is bonded to the first piece to be tested, and the first piece to be tested is a glue film to be tested or a battery to be tested, so as to complete the preparation of the sample to be tested of the glue to be tested and the glue film to be tested or the glue to be tested and the battery to be tested. Compared with the prior art that prepares the sample to be tested by screen printing glue, the present application completes the preparation of the glue to be tested and the glue film to be tested or the glue to be tested and the battery to be tested by setting a glue coating mold with glue coating holes. The structure of the glue coating mold is simple and easy to manufacture, which reduces the production cost of the enterprise, is beneficial to the enterprise's cost reduction and efficiency improvement, and is easy to operate, which is conducive to widespread promotion among operators and has wide applicability.

[0032] The present application also provides a method for testing the adhesive strength of a sample to be tested, wherein the first test piece in the sample to be tested is a test adhesive film, comprising the following steps:

[0033] A1. Laminating the sample to be tested to obtain a laminated assembly, wherein the second release film, the adhesive film to be tested and the first backplane in the laminated assembly form a first test assembly;

[0034] A2, cutting the first test assembly to form a plurality of first test strips;

[0035] A3. Measure the peeling force of the first test strip when it is peeled off from the glue to be tested.

[0036] The present application also provides another method for testing the bonding strength of a sample to be tested, wherein the first test piece in the sample to be tested is a battery to be tested, comprising the following steps:

[0037] B1. Laminating the sample to be tested to obtain a laminated assembly, wherein the third release film, the second adhesive film and the second back plate in the laminated assembly form a second test assembly;

[0038] B2, cutting the second test assembly to form a plurality of second test strips;

[0039] B3. Measure the peeling force of the second test strip when the glue to be tested is peeled off from the battery to be tested. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application.

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0042] FIG. 1 is a flowchart of a method for preparing a sample to be tested provided in the present application.

[0043] FIG. 2 is a schematic diagram of the structure of the glue coating mold provided in the present application.

[0044] FIG3 is a schematic diagram of the structure of a sample to be tested provided by the present application.

[0045] FIG. 4 is a schematic diagram of the structure of another sample to be tested provided in the present application.

[0046] in:

[0047] 10. Sample to be tested; 20. Glue coating mold; 21. Glue coating hole;

[0048] 100. First test object; a. Test film; b. Test battery;

[0049] 200, second test piece; 300, first substrate glass; 400, second release film; 500, first back plate; 600, second substrate glass; 700, first adhesive film; 800, third release film; 900, second adhesive film; 1000, second back plate. DETAILED DESCRIPTION

[0050] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0051] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0052] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0053] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0054] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0055] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0056] Referring to FIG. 1 and FIG. 2 , FIG. 1 is a flowchart of a method for preparing a sample 10 to be tested according to an embodiment of the present application, and FIG. 2 is a schematic diagram of a structure of a glue coating mold 20 according to an embodiment of the present application. The method for preparing a sample 10 to be tested according to an embodiment of the present application includes the following steps:

[0057] Step S1, providing a glue coating mold 20, glue to be tested and a first test piece 100, the glue coating mold 20 is provided with a glue coating hole 21, the first test piece 100 is a glue film a to be tested or a battery b to be tested, if it needs to be explained, UV glue (Ultraviolet Rays, shadowless glue) is generally used in photovoltaic modules to connect the various components in the photovoltaic modules, so the present application preferably uses UV glue as the glue to be tested, if it needs to be emphasized, the glue to be tested is not limited to the above-mentioned UV glue, and can be other glues for connecting the various components of the photovoltaic module; then, through step S2, the glue coating hole 21 is filled with the glue to be tested, and in the specific setting, the glue to be tested can be filled with automated equipment such as an automatic glue dispensing machine or an automatic glue filling machine, or the glue to be tested can be filled by manual glue squeezing; then, through step S3, after the glue to be tested is cured, the second test piece 200 is obtained, and the second test piece 200 is bonded to the first test piece 100 to obtain the test sample 10.

[0058] The preparation method of the above-mentioned sample 10 to be tested is to fill the glue to be tested into the glue hole 21 in the glue coating mold 20, and then obtain the second test piece 200 after the glue to be tested is cured, and the second test piece 200 is bonded with the first test piece 100, and the first test piece 100 is the glue film a to be tested or the battery b to be tested, so as to complete the preparation of the sample 10 to be tested of the glue to be tested and the glue film a to be tested or the glue to be tested and the battery b to be tested. Compared with the prior art that prepares the sample 10 to be tested by screen printing glue, the present application completes the preparation method of the glue to be tested and the glue film a to be tested or the glue to be tested and the battery b to be tested by setting a glue coating mold 20 with glue coating holes 21. The glue coating mold 20 has a simple structure and is easy to manufacture, which reduces the production cost of the enterprise, is beneficial to the enterprise's cost reduction and efficiency improvement, and is easy to operate, which is conducive to widespread promotion among operators and has wide applicability.

[0059] In order to allow the glue to be tested to fill every corner of the glue coating hole 21, a preferred embodiment provides a first release film and a cover plate in step S1, and further includes the following steps between step S2 and step S3: the first release film is set on the glue coating mold 20, and the first release film cover at least covers the glue coating hole 21; the cover plate is set above the first release film to squeeze the glue to be tested under the first release film. When the glue to be tested is UV glue, in order to facilitate the fixation of the glue to be tested, the cover plate is preferably transparent glass, and after the cover plate is set above the first release film, the glue to be tested is cured by irradiating with an ultraviolet lamp for a set time, and the irradiation time is set according to the amount of glue to be tested filled, and is not limited here.

[0060] It should be noted that when the first test piece 100 is a test adhesive film a, a first substrate glass 300 is also provided in step S1, and step S2 specifically includes the following steps: step S21, setting the glue coating mold 20 on the first substrate glass 300; step S22, setting the glue to be tested on the first substrate glass 300 through the glue coating hole 21. Through the above settings, the glue to be tested is set on the first substrate glass 300 through the glue coating mold 20, which, on the one hand, prevents the glue to be tested from overflowing on the first substrate glass 300, and on the other hand, the first substrate glass 300 conveniently provides a force point for the step of squeezing the glue to be tested.

[0061] As shown in FIG3 , FIG3 is a schematic diagram of the structure of a sample 10 to be tested provided in an embodiment of the present application. When the first test piece 100 is a test film a, specifically, in step S1, a second release film 400 and a first back plate 500 are also provided, and in step S3, the following steps are specifically included:

[0062] Step S31, the glue to be tested is cured to form the second test piece 200, and the glue coating mold 20 is removed at the same time. It is not difficult to understand that the cover plate will be used to squeeze the glass to be tested before step S3, so the first release film and the cover plate need to be removed while removing the glue coating mold 20; then, step S32 is performed to cover part of the glue to be tested with the second release film 400; step S33 is performed to set the glue film a to be tested on the second release film 400, and part of the glue film a to be tested directly overlaps with the glue to be tested. In the specific setting, the second release film 400 can optionally cover half of the glue to be tested, so that the glue film a to be tested can be subsequently bonded with the other half of the glue to be tested that is not covered by the second release film 400; finally, step S34 is performed to set the first back plate 500 on the side of the glue film a to be tested away from the second release film 400 to obtain the sample 10 to be tested.

[0063] It should be noted that the second release film 400 is disposed between the test film a and the test glue in order to facilitate the subsequent partial separation of the test film a and the test glue so as to measure the peeling force when the two are peeled off, thereby obtaining the bonding strength of the two. During the test, if the test glue is directly pulled away from the first liner glass by the test film a, it proves that the bonding effect between the test glue and the test film a is good, otherwise the bonding effect is poor.

[0064] As shown in FIG4 , FIG4 is a schematic diagram of the structure of another sample to be tested 10 provided in an embodiment of the present application. When the first test piece 100 is a battery to be tested b, in a preferred embodiment, a second substrate glass 600 and a first adhesive film 700 are also provided in step S1, and the following steps are specifically included in step S2: step S21, using the opposite sides of the first adhesive film 700 to bond the second substrate glass 600 and the battery to be tested b respectively; step S22, setting the glue coating mold 20 on the battery to be tested b; step S23, setting the glue to be tested on the battery to be tested b through the glue coating hole 21. Through the above arrangement, the battery b to be tested is arranged on the second substrate glass 600 through the first adhesive film 700. The first adhesive film 700 provides a buffer for the subsequent measurement of the battery b to be tested and the peeling of the glue to be tested, thereby preventing the battery b to be tested from being damaged during the test. The glue coating mold 20 is arranged on the substrate glass, and the glue to be tested is arranged on the battery b to be tested through the glue coating mold 20, thereby preventing the glue to be tested from overflowing when it is directly applied to the battery b to be tested. On the other hand, the glue coating mold 20 has a simple structure and is easy to manufacture, which is beneficial to reducing the production cost of the enterprise.

[0065] In order to conveniently simulate the positional relationship between the battery b to be tested and the glue to be tested in the photovoltaic module and increase the accuracy of the subsequent bonding strength test between the two, specifically, in step S1, a third release film 800, a second adhesive film 900 and a second back sheet 1000 are also provided, and in step S3, the following steps are specifically included:

[0066] Step S31, after the glue to be tested is cured, the glue coating mold 20 is removed to obtain a second test piece 200 bonded to the first test piece 100. It is not difficult to understand that before step S3, a cover plate is used to squeeze the glass to be tested, so the first release film and the cover plate need to be removed while removing the glue coating mold 20; then, step S32 is performed to cover part of the glue to be tested with the third release film 800; then, step S33 is performed to arrange the second glue film 900 on the third release film 800, and part of the second glue film 900 directly overlaps with the glue to be tested. In the specific arrangement, the third release film 800 can optionally cover half of the glue to be tested, so that the second glue film 900 can be bonded with the other half of the glue to be tested that is not covered by the third release film 800; finally, step S34 is performed to arrange the second back plate 1000 on the side of the second glue film 900 away from the third release film 800 to obtain the test sample 10.

[0067] It should be noted that the third release film 800 is arranged between the glue to be tested and the second adhesive film 900 to facilitate the subsequent partial separation of the glue to be tested and the second adhesive film 900 so that the second adhesive film 900 and the back panel can be folded and clamped in the bonding strength testing instrument. The second adhesive film 900 drives the glue to be tested to separate from the battery b to be tested. If the glue to be tested directly separates from the battery b to be tested, it proves that the bonding effect between the glue to be tested and the battery b to be tested is poor. If the glue to be tested destroys the battery b to be tested or destroys the combination of the battery b to be tested and the first adhesive film 700, it proves that the bonding effect between the glue to be tested and the battery b to be tested is good.

[0068] In order to ensure that the glue to be tested can be stably solidified in the glue coating mold 20, in a preferred embodiment, the glue coating mold 20 is made of tempered glass. In a specific setting, the glue coating mold 20 can be selected as transparent tempered glass, which is convenient for ultraviolet irradiation when the glue to be tested is UV glue. And the use of tempered glass in the glue coating mold 20 makes the glue coating mold 20 have stable chemical properties, and the glue coating mold 20 is difficult to react with the glue to be tested and produce deformation, so the glue coating mold 20 can be used repeatedly, reducing costs.

[0069] In order to facilitate the glue to be tested to be disposed on the first substrate glass 300 or the battery b to be tested through the glue coating mold 20, specifically, the glue coating hole 21 penetrates the glue coating mold 20 along the thickness direction of the glue coating mold 20. Through the above arrangement, the depth of the glue coating hole 21 is the thickness of the glue to be tested, and the required thickness of the glue to be tested can be obtained by preparing glue coating molds 20 of different thicknesses. Moreover, the glue coating mold 20 is a tempered glass, and the thickness of the glue coating mold 20 is also extremely stable, and will not bend and produce errors when subjected to ultraviolet light irradiation, thereby ensuring that the thickness of the glue to be tested after curing is controllable.

[0070] It should be noted that, in the specific configuration, the glue coating mold 20 is preferably a square structure, which is simple and easy to produce, but the shape of the glue coating mold 20 is not limited to the square, and can also be any geometric shape such as a circle, a polygon, an ellipse, etc. Similarly, the shape of the glue coating hole 21 is preferably a square, but is not limited to the square, and can be any geometric shape.

[0071] The present application also provides a method for testing the bonding strength of a sample 10 to be tested. The first test piece 100 in the sample 10 to be tested is a test film a. The method for testing the bonding strength thereof comprises the following steps:

[0072] Step A1, laminating the sample to be tested 10 to obtain a laminated assembly, wherein the second release film 400, the adhesive film to be tested a and the first back plate 500 in the laminated assembly form a first test assembly; Step A2, cutting the first test assembly to form a plurality of first test strips; Step A3, measuring the peeling force when the first test strips are peeled off from the adhesive to be tested. It should be noted that in order to facilitate cutting the first back plate 500 in the first test assembly, in the specific setting, the first back plate 500 is preferably made of plastic material.

[0073] When measuring the peeling force, the present application uses an adhesive strength tester for testing. The adhesive strength tester includes a base, and a sample lower clamp arranged on the base, and the base is also spaced apart with a slide rail extending upward, and a sliding rod is arranged between the two slide rails, and the slide rod is connected to the sample upper clamp, and the sample upper clamp is connected to a dynamometer, and the dynamometer is used to test the tension. During the test, the laminated assembly is placed on the sample lower clamp of the test instrument, and then the sample lower clamp is locked, and the sample upper clamp is lowered to the position where the first test strip is folded in half and extended and connected, and then the test is started, and the sample upper clamp moves upward along the slide rail, and during the movement, the dynamometer collects the tension generated by the peeling process of the glue to be tested and the adhesive film to be tested.

[0074] In the above-mentioned method for testing the bonding strength of the sample 10 to be tested, in the process of preparing the sample 10 to be tested, the glue to be tested is filled into the glue holes 21 in the glue coating mold 20, and then the second piece to be tested 200 is obtained after the glue to be tested is cured, and the second piece to be tested 200 is bonded to the first piece to be tested 100, and the first piece to be tested 100 is the glue film a to be tested to complete the preparation of the sample 10 to be tested of the glue to be tested and the glue film a to be tested. Compared with the prior art in which the sample 10 to be tested is prepared by screen printing glue, in the present application, the glue coating mold 20 with glue holes 21 is provided to complete the preparation of the glue to be tested and the glue film a to be tested, and the glue coating mold 20 has a simple structure and is easy to manufacture, which reduces the production cost of the enterprise, is beneficial to the enterprise's cost reduction and efficiency improvement, and is easy to operate, which is conducive to widespread promotion among operators and has wide applicability.

[0075] The present application also provides another method for testing the bonding strength of a sample 10 to be tested. The first test piece 100 in the sample 10 to be tested is a battery b to be tested. The method for testing the bonding strength thereof includes the following steps:

[0076] Step B1, laminating the sample to be tested 10 to obtain a laminated assembly, wherein the third release film 800, the second adhesive film 900 and the second back plate 1000 in the laminated assembly form a second test assembly; Step B2, cutting the second test assembly to form a plurality of second test strips; Step B3, measuring the peeling force when the second test strip drives the glue to be tested to be peeled off from the battery to be tested b. It should be noted that the adhesive strength tester and its operation method used when the first test piece 100 is the battery to be tested b are similar to those when the first test piece 100 is the adhesive film to be tested a, and will not be elaborated on here. And the beneficial effects of using the above method to test the glue to be tested and the battery to be tested b are similar to the beneficial effects of the glue to be tested and the adhesive film to be tested a, and will not be elaborated on here.

[0077] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0078] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A method for preparing a sample to be tested, characterized in that: The method for preparing the sample to be tested comprises the following steps: S1, providing a glue coating mold, glue to be tested and a first test object, wherein the glue coating mold is provided with a glue coating hole, and the first test object is a glue film to be tested or a battery to be tested; S2, filling the glue to be tested into the glue coating hole; S3, obtaining a second test piece after the test glue is cured, and attaching the second test piece to the first test piece to obtain the test sample.

2. The method for preparing a sample to be tested according to claim 1, characterized in that: In step S1, a first release film and a cover plate are also provided, and the following steps are also included between step S2 and step S3: The first release film is disposed on the glue coating mold, and the first release film cover at least covers the glue coating hole; The cover plate is disposed above the first release film to squeeze the glue to be tested below the first release film.

3. The method for preparing a sample to be tested according to claim 1, characterized in that: When the first test object is the test adhesive film, a first substrate glass is also provided in step S1, and step S2 specifically includes the following steps: S21, placing the glue coating mold on the first substrate glass; S22, placing the glue to be tested on the first substrate glass through the glue coating hole.

4. The method for preparing a sample to be tested according to claim 3, characterized in that: In step S1, a second release film and a first back plate are also provided, and in step S3, the following steps are specifically included: S31, waiting for the glue to be tested to solidify to form the second test piece, and removing the glue coating mold; S32, covering a portion of the glue to be tested with the second release film; S33, the adhesive film to be tested is disposed on the second release film, and a portion of the adhesive film to be tested directly overlaps with the glue to be tested; S34, disposing the first back plate on a side of the adhesive film to be tested that is away from the second release film, to obtain the sample to be tested.

5. The method for preparing a sample to be tested according to claim 1, characterized in that: When the first device to be tested is the battery to be tested, a second substrate glass and a first adhesive film are also provided in step S1, and step S2 specifically includes the following steps: S21, using opposite sides of the first adhesive film to respectively bond the second substrate glass and the battery to be tested; S22, placing the glue coating mold on the battery to be tested; S23, placing the glue to be tested on the battery to be tested through the glue application hole.

6. The method for preparing a sample to be tested according to claim 5, characterized in that: In step S1, a third release film, a second adhesive film and a second back sheet are also provided, and in step S3, the following steps are specifically included: S31, after the glue to be tested is cured, the glue coating mold is removed to obtain the second piece to be tested that is attached to the first piece to be tested; S32, covering a portion of the glue to be tested with the third release film; S33, the second adhesive film is disposed on the third release film, and a portion of the second adhesive film directly overlaps with the glue to be tested; S34, disposing the second back plate on a side of the second adhesive film away from the third release film to obtain the sample to be tested.

7. The method for preparing a sample to be tested according to claim 1, characterized in that: The glue coating mold is made of tempered glass.

8. The method for preparing a sample to be tested according to claim 1, characterized in that: The glue coating hole penetrates the glue coating mold along the thickness direction of the glue coating mold.

9. A method for testing the adhesive strength of a sample to be tested, wherein the first test piece in the sample to be tested is a test film, characterized in that: The steps include: A1. Laminating the sample to be tested to obtain a laminated assembly, wherein the second release film, the adhesive film to be tested and the first backplane in the laminated assembly form a first test assembly; A2, cutting the first test assembly to form a plurality of first test strips; A3. Measure the peeling force of the first test strip when it is peeled off from the glue to be tested.

10. A method for testing the bonding strength of a sample to be tested, wherein the first test piece in the sample to be tested is a battery to be tested, characterized in that: The steps include: B1. Laminating the sample to be tested to obtain a laminated assembly, wherein the third release film, the second adhesive film and the second back plate in the laminated assembly form a second test assembly; B2, cutting the second test assembly to form a plurality of second test strips; B3. Measure the peeling force of the second test strip when the glue to be tested is peeled off from the battery to be tested.

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