A sealed fixture for illumination testing and battery testing system

Abstract

This utility model discloses a sealing fixture and battery testing system for illumination testing. It includes a first clamping block, a second clamping block, and a sealing structure. The first clamping block has an illumination testing channel communicating with a clamping area. This channel accommodates an external light source during battery testing, allowing the external light source to directly illuminate the glass substrate of the battery sample. In other words, this technical solution, on the one hand, eliminates the need for a quartz glass light-transmitting element in traditional structures by incorporating the battery sample with its glass substrate as part of the sealing fixture; on the other hand, the clamping area and sealing structure achieve reliable sealing of the battery sample. Furthermore, the illumination testing channel on the first clamping block allows external light to directly illuminate the surface of the battery glass substrate, significantly improving light utilization efficiency and transmittance, and avoiding light loss caused by quartz glass.

Description

Technical Field

[0001] This utility model relates to the field of optical instrument technology, and in particular to a sealing fixture and battery testing system for light illumination testing. Background Technology

[0002] In the performance testing of photoelectric conversion components such as solar cells, sealed fixtures with a certain degree of light transmittance are typically used to ensure the airtightness of the testing environment while allowing external light sources to illuminate the surface of the battery under test. Currently, most commercially available sealed fixtures widely use quartz glass as the light-transmitting structural component. Quartz glass possesses a certain degree of light transmittance and sealing properties, which can meet the airtightness requirements during battery testing to a certain extent.

[0003] However, sealing clamps that use quartz glass as the light-transmitting structural component generally suffer from the following technical defects:

[0004] First, although quartz glass has light-transmitting capabilities, it still reflects and attenuates light to some extent, resulting in a decrease in transmittance. In high-precision illumination testing, this loss of transmittance directly affects the accuracy of the test data, making it difficult to guarantee that an entire solar radiation intensity will be applied to the surface of the battery sample.

[0005] Secondly, quartz glass itself is hard and brittle, making it difficult to process. Special tools and processes are required to complete the processing and shaping of the encapsulation structure, which significantly increases manufacturing and time costs.

[0006] In addition, quartz glass has limited environmental adaptability and is prone to structural performance changes in high temperature, high pressure or strong corrosive environments, such as devitrification, deformation, and surface stress accumulation, which affect the sealing effect of the fixture and the stability of the test.

[0007] In summary, existing sealing clamps using quartz glass have certain limitations in terms of light transmittance, processing cost, and environmental adaptability. Utility Model Content

[0008] The main objective of this invention is to provide a sealing fixture and battery testing system for light illumination testing, so as to at least solve the technical problems in the related art.

[0009] To achieve the above objectives, a first aspect of this utility model provides a sealing fixture for light illumination testing, the sealing fixture for light illumination testing comprising:

[0010] First clamping block;

[0011] The second clamping block is disposed opposite to the first clamping block and forms a clamping area; wherein the clamping area is used to clamp a battery sample having a glass substrate;

[0012] A sealing structure is disposed within the clamping area and is used to contact the glass substrate of the battery sample to create a sealed environment;

[0013] The first clamping block is provided with a light testing channel communicating with the clamping area. The light testing channel is used to accommodate an external light source during battery testing so that the external light source directly illuminates the glass substrate of the battery sample.

[0014] A second aspect of this utility model provides a battery testing system, including a testing device and a sealing clamp for light irradiation testing as described in the first aspect;

[0015] The testing device is used to test the battery sample in the sealed fixture.

[0016] This invention relates to a sealing fixture and battery testing system for illumination testing. On the one hand, by incorporating the battery sample with a glass substrate as part of the sealing fixture, it eliminates the need for a quartz glass light-transmitting element in traditional structures, thus simplifying the fixture structure. On the other hand, by setting up a clamping area and a sealing structure, it achieves reliable sealing of the battery sample. Utilizing the illumination testing channel provided on the first clamping block, an external light source can directly illuminate the surface of the battery glass substrate, significantly improving light utilization efficiency and transmittance. It avoids light loss caused by quartz glass and enhances the stability and adaptability of the sealing fixture under high temperature, high pressure, or corrosive environments. It has the advantages of simple structure, high transmittance, stable sealing effect, and strong testing adaptability. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A three-dimensional schematic diagram of a sealing fixture for light illumination testing provided in an embodiment of this application;

[0019] Figure 2 A front view of a sealing fixture for light illumination testing provided in an embodiment of this application;

[0020] Figure 3 for Figure 1 A schematic diagram of the internal structure without the clamping blocks installed;

[0021] Figure 4 This is a front half-sectional view of the sealing fixture for light illumination testing provided in an embodiment of this application.

[0022] Reference numerals: 1. Sealing fixture for light exposure testing; 11. First clamping block; 12. Second clamping block; 13. Air pipe interface; 14. Electrical interface; 15. Locking element; 16. Four-sided fixing assembly; 17. Clamping area; 20. Sealing structure; 30. Battery sample; 111. Light exposure testing channel. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0024] It should be noted that related terms such as "first" and "second" can be used to describe various components, but these terms do not limit the component. These terms are only used to distinguish one component from another. For example, without departing from the scope of this utility model, the first component can be referred to as the second component, and the second component can similarly be referred to as the first component. The term "and / or" refers to any one or more combinations of related and descriptive terms.

[0025] Please see Figures 1 to 4 This application provides a sealing fixture 1 for light illumination testing, which is used to seal the battery sample 30 during the test and allow the light source to directly illuminate the glass substrate of the battery sample, thereby achieving a high light transmittance effect. This not only saves the cost of using quartz glass light-transmitting components but also improves the testing efficiency. Furthermore, the performance of the battery glass substrate will not change due to long-term testing even under harsh environments.

[0026] The sealing clamp 1 for light illumination testing according to the embodiments of this application includes at least a first clamping block 11, a second clamping block 12, and a sealing structure 20. The components are described below:

[0027] The first clamping block 11 and the second clamping block 12 are arranged opposite each other (for example, one is above the other and the other is below the other, forming a double-layer clamping block structure design), and a clamping area 17 is formed between them. The clamping area 17 is used to accommodate and clamp the battery sample 30.

[0028] In an optional embodiment, the sample to be tested (battery sample 30) is a solar cell with a glass substrate, preferably a perovskite solar cell, a CIGS thin-film cell, or a CdTe thin-film cell. This type of cell typically includes a transparent glass substrate underneath and a functional layer and electrode structure thereon, possessing light transmittance, conductivity, and test adaptability, allowing for simultaneous illumination and electrical performance testing within the fixture. The glass substrate not only has good light transmittance but also serves as part of the fixture's sealed structure, enhancing the integration of the testing device.

[0029] The sealing structure 20 can be an elastic sealing ring, which is set in the clamping area 17 to fit and contact the outer surface of the glass substrate when the battery sample 30 is clamped, forming a sealed environment (to isolate the battery functional layer and electrode structure in the battery sample 30), preventing external gas or impurities from entering the sealed fixture during the test (to avoid external gas or impurities from contacting the battery functional layer and electrode structure and interfering with the test results).

[0030] The first clamping block 11 is provided with a light illumination test channel 111 (which can accommodate an external light source). The light illumination test channel 111 passes through the first clamping block 11 and communicates with the clamping area 17. During the test, the external light source can directly illuminate the glass substrate surface of the battery sample 30 through the light illumination test channel 111 (and correspondingly illuminate the battery functional layer and electrode structure on it), achieving a high light transmittance illumination effect. This eliminates the need for additional light-transmitting structural components such as quartz glass and avoids light loss caused by intermediate media.

[0031] In practical use, the user can place the battery sample 30 on the second clamp 12, press it down with the first clamp 11 and fix it with the help of the locking device, so that the glass substrate of the battery sample 30 is pressed onto the sealing structure 20 to form a sealed state, and an external light source is introduced through the light test channel 111 for testing.

[0032] As can be seen, the sealing fixture for illumination testing in this application embodiment simplifies the fixture structure by using the battery sample with a glass substrate as part of the sealing fixture itself, eliminating the need for a quartz glass light-transmitting element in traditional structures. Simultaneously, by setting up a clamping area and a sealing structure, reliable sealing of the battery sample is achieved. Utilizing the illumination testing channel on the first clamping block, an external light source can directly illuminate the surface of the battery glass substrate, significantly improving light utilization efficiency and transmittance (while still meeting testing requirements), and avoiding light loss caused by quartz glass.

[0033] It should be noted that, in this embodiment, although both the first clamping block 11 and the second clamping block 12 are structural components used to clamp the battery sample 30, they have clear differences in structural function and cooperation method, which are explained below:

[0034] In terms of structural position, the first clamping block 11 is located above the sealing clamp, and the second clamping block 12 is located below. The first clamping block 11 can move vertically relative to the second clamping block 12 to achieve the clamping and release of the battery sample 30.

[0035] In terms of functional configuration, the first clamping block 11 is provided with a light test channel 111, which is used to guide an external light source to directly irradiate the glass substrate of the battery sample. Therefore, the first clamping block 11 undertakes the function of light introduction; while the second clamping block 12 mainly undertakes the function of supporting the battery sample. It is provided with a sealing structure 20 (such as an annular sealing ring) and forms a sealing interface for pressing the glass substrate.

[0036] In terms of the engagement method, the first clamping block 11 is usually connected to an external clamping device or screw to apply a downward clamping force, while the second clamping block 12 is a relatively fixed component, the body of which can be fixedly connected to an external test platform to provide stable reference support.

[0037] Therefore, the first clamping block 11 is a movable mating part that undertakes the functions of light introduction and clamping, while the second clamping block 12 is a fixed bearing part that undertakes the functions of battery positioning and sealing support. Together, they constitute the basic clamping system of the sealing clamp.

[0038] In an optional embodiment of this application, the sealing structure 20 is an annular sealing ring. The annular sealing ring is disposed on the side of the second clamping block 12 facing the glass substrate of the battery sample 30. During the test, the glass substrate is directly pressed onto the annular sealing ring, and a highly stable sealed contact is formed by the clamping action of the clamp (when clamping the battery sample), ensuring that the test chamber is in an isolated state.

[0039] In addition, the cross-section of the sealing structure 20 is circular or elliptical, which has good elasticity and sealing fit.

[0040] In an optional embodiment of this application, the light test channel 13 on the first clamping block 11 is a through hole, and its open end can be connected to an external light source module, collimation light guide system or fiber optic lighting unit to ensure that high-efficiency light can directly irradiate the glass surface of the battery sample 30 without intermediate obstruction structure, thereby achieving a test environment with high transmittance and high reproduction.

[0041] In an optional embodiment of this application, at least one positioning structure (not shown) is provided between the first clamping block 11 and the second clamping block 12.

[0042] The positioning structure is used to constrain the position of the battery sample, ensuring that the glass substrate is aligned with the light illumination test channel. Specifically, the positioning structure, such as positioning posts, guide pins, or limiting edges, ensures the stable positioning of the battery sample 30 during assembly, constraining its planar position and ensuring that its glass substrate is accurately aligned with the light illumination test channel 13, avoiding misalignment that could lead to light illumination test errors.

[0043] In an optional embodiment of this application, the first clamping block 11 and the second clamping block 12 are clamped together by a locking member 15; the locking member 15 includes at least one of a bolt or a clamping nut. That is, in this embodiment, the detachable design between the first clamping block 11 and the second clamping block 12 achieves reliable clamping and sealing effects while also facilitating quick assembly and disassembly.

[0044] To adapt to different gas environment testing or achieve a negative pressure sealed environment, the sealing fixture 1 also includes a gas pipe interface 13, which is used to communicate with the clamping area 17 so as to introduce gas into the clamping area 17 or perform vacuum treatment during battery testing. For example, it can be used to introduce nitrogen, inert gas or perform vacuum operation to meet the photovoltaic testing needs in high temperature, humid heat or corrosive environments.

[0045] In addition, to achieve synchronous monitoring of electrical performance, the sealing fixture 1 also includes an electrical interface 14, one end of which is located inside the fixture for electrical connection with the electrical area (electrode area) of the battery sample 30, and the other end is led out to the outside of the fixture, which can be connected to external testing equipment such as IV characteristic analyzer to achieve synchronous opto-electric integrated testing.

[0046] In an optional embodiment of this application, the sealing clamp 1 further includes four-sided fixing components 16.

[0047] The four-sided fixing assembly 16 is used to fix it to an external temperature control platform or constant temperature hot stage, and can be used for testing under different ambient temperatures to meet the requirements of test diversity.

[0048] This application also provides a battery testing system, including a testing device and a sealed fixture for light exposure testing as described in the above embodiments; the testing device is used to test a battery sample in the sealed fixture.

[0049] This invention relates to a sealing fixture and battery testing system for illumination testing. On the one hand, by incorporating the battery sample with a glass substrate as part of the sealing fixture, it eliminates the need for a quartz glass light-transmitting element in traditional structures, thus simplifying the fixture structure. On the other hand, by setting up a clamping area and a sealing structure, it achieves reliable sealing of the battery sample. Utilizing the illumination testing channel provided on the first clamping block, an external light source can directly illuminate the surface of the battery glass substrate, significantly improving light utilization efficiency, avoiding light loss caused by quartz glass, increasing light transmittance, and enhancing the stability and adaptability of the sealing fixture under high temperature, high pressure, or corrosive environments. It has the advantages of simple structure, high light transmittance, stable sealing effect, and strong testing adaptability.

[0050] In summary, the embodiments of this application also have the following beneficial effects: by using the sample's own sealing fixture instead of the commonly used quartz glass sealing fixture, the light transmittance is improved and the stability of the sealing is ensured, the processing cost of quartz glass is reduced, the influence of the environment is reduced and the performance changes are reduced, because a sample battery is used as the seal, and a new sample battery will be replaced after the sample battery is tested, thereby improving the testing efficiency.

[0051] The specific embodiments of the utility model have been described in detail above, but they are only examples, and the utility model is not limited to the specific embodiments described above. For those skilled in the art, any equivalent modifications or substitutions to the utility model are also within the scope of the utility model. Therefore, all equivalent transformations, modifications, and improvements made without departing from the spirit and principles of the utility model should be covered within the scope of the utility model.

Claims

1. A sealing clamp for light illumination testing, characterized in that, The sealing fixture for light illumination testing includes: First clamping block; The second clamping block is disposed opposite to the first clamping block and forms a clamping area; wherein the clamping area is used to clamp a battery sample having a glass substrate; A sealing structure is disposed within the clamping area and is used to contact the glass substrate of the battery sample to create a sealed environment; The first clamping block is provided with a light testing channel communicating with the clamping area. The light testing channel is used to accommodate an external light source during battery testing so that the external light source directly illuminates the glass substrate of the battery sample.

2. The sealing fixture for light illumination testing as described in claim 1, characterized in that, The sealing structure is an annular sealing ring; The annular sealing ring is disposed on the glass substrate of the battery sample to form a sealed contact when the battery sample is clamped.

3. The sealing fixture for light illumination testing as described in claim 2, characterized in that, The cross-section of the annular sealing ring is circular or elliptical.

4. The sealing fixture for light illumination testing as described in claim 2, characterized in that, The illumination test channel is a through hole that penetrates the first clamping block; The open end of the through hole is used to connect an external light source module or a collimating light guide device.

5. The sealing fixture for light illumination testing as described in claim 3, characterized in that, At least one positioning structure is provided between the first clamping block and the second clamping block; The positioning structure is used to restrict the position of the battery sample, ensuring that the glass substrate is aligned with the light-emitting test channel.

6. The sealing fixture for light illumination testing as described in claim 4, characterized in that, The first clamping block and the second clamping block are clamped together by a locking device; The locking element includes at least one of a bolt or a clamping nut.

7. The sealing fixture for light illumination testing as described in claim 2, characterized in that, The sealing fixture for light illumination testing also includes an air tube interface; The gas tube interface is used to communicate with the clamping area so as to introduce gas into the clamping area or perform vacuuming during battery testing.

8. The sealing fixture for light illumination testing as described in claim 7, characterized in that, The sealing fixture for light illumination testing also includes an electrical interface; One end of the electrical interface is used for electrical connection with the electrical area of ​​the battery sample, and the other end of the electrical interface is used for electrical connection with an external testing system.

9. The sealing fixture for light illumination testing as described in claim 8, characterized in that, The sealing clamp for light illumination testing also includes four-sided fixing components; The four-sided fixing components are used to fix the device to the external temperature control platform.

10. A battery testing system, characterized in that, Includes a testing apparatus and a sealing clamp for light illumination testing as described in any one of claims 1 to 9; The testing device is used to test the battery sample in the sealed fixture.

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