Clamp for testing solar cell and probe station for testing solar cell
By designing a solar cell test fixture using elastic electrodes and limit-fixed structures, the problems of inconvenience in use and low testing efficiency in the prior art are solved, and the stable introduction of electrodes and the improvement of testing efficiency are achieved.
Patent Information
- Application Number
- CN202420811708.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-18
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-04-18
AI Technical Summary
The existing solar cell testing fixtures are inconvenient to use and have low testing efficiency, especially when the positive and negative electrodes are drawn out, the problem of poor contact is prone to occur.
A solar cell test fixture is designed, using an insulated mount and bottom plate, and an elastic electrode for contacting the solar cell electrode. Through the limit fixing structure and spring, the stable lead-out of the electrode and the convenient loading and unloading of the solar cell are achieved.
This fixture makes the positive and negative electrode introduction of solar cells more stable and convenient, avoids the problem of poor contact and significantly improves the testing efficiency.
Smart Images
Figure CN222802830U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of solar cells, in particular to a fixture for testing solar cells and a probe station for testing solar cells. Background Art
[0002] A solar cell is a photoelectric semiconductor sheet that uses sunlight to generate electricity directly. It is also called a "solar chip" or "photocell". As long as it is illuminated by light that meets certain illumination conditions, it can instantly output voltage and generate current in the presence of a circuit. A solar cell is a device that directly converts light energy into electrical energy through the photoelectric effect or photochemical effect. The development of solar energy technology has roughly gone through three stages: the first generation of solar cells mainly refers to single-crystal silicon and polycrystalline silicon solar cells, whose photoelectric conversion efficiency in the laboratory has reached 25% and 20.4% respectively; the second generation of solar cells mainly includes amorphous silicon thin-film cells and polycrystalline silicon thin-film cells. The third generation of solar cells mainly refers to some new concept batteries with high conversion efficiency, such as dye-sensitized cells, quantum dot cells, and organic solar cells.
[0003] Perovskite solar cells are solar cells that use perovskite-type organic metal halide semiconductors as light-absorbing materials. They belong to the third generation of solar cells and are also called new concept solar cells. Figure 1 and Figure 2 As shown, the structure of the perovskite solar cell 1 is that one side is a light-receiving side 2, i.e., a side that receives light, and the other side is provided with electrodes, including a positive electrode 3 and a negative electrode 4. During the development of the perovskite solar cell, it is necessary to conduct performance tests, such as the effect of the temperature environment on the performance of the solar cell, such as room temperature environment, low temperature environment below zero degrees, and high temperature environment above 100 degrees.
[0004] When testing the perovskite solar cell with the above structure, it is necessary to use a clamp to fix it, and lead out the positive electrode and the negative electrode through leads to connect with various detection devices or instruments, illuminate the light-receiving surface of the solar cell and create different temperature environments for testing. However, the existing clamps only simply fix the solar cell. As for the lead-out of the positive electrode and the negative electrode, it is necessary to use conductive copper wires to pre-place under the corresponding electrodes of the solar cell before fixing the battery, and use the clamp to press the electrodes of the solar cell and the conductive copper wires. This clamp is very inconvenient to use, and there is a problem of poor contact between the electrodes of the solar cell and the conductive copper wires, which needs to be re-clamped, greatly reducing the efficiency of the test. Utility Model Content
[0005] The utility model aims to provide a fixture for testing solar cells to solve the problems of inconvenient use and low testing efficiency in the prior art; at the same time, the utility model also aims to provide a probe station for testing solar cells using the fixture.
[0006] To achieve the above-mentioned purpose, a solar cell testing fixture of the utility model adopts the following technical scheme: a solar cell testing fixture, comprising an insulating mounting seat, the mounting seat having a loading groove for loading the solar cell, the bottom of the loading groove being provided with conductive contact electrodes corresponding to and contacting the positive and negative electrodes on one side of the solar cell; the fixture also comprises an insulating bottom plate arranged on the mounting seat, the bottom plate being provided with lead-out electrodes connected to the corresponding contact electrodes; a limiting and fixing structure for limiting and fixing the solar cell is provided on the mounting seat or the bottom plate.
[0007] The position limiting and fixing structure comprises a pressing plate, and the pressing plate is used to contact the light receiving surface of the solar cell to fix the solar cell.
[0008] The number of the pressing plates is at least two, each pressing plate is rotatably disposed on the mounting seat and the solar cell is fixed or released by rotating the pressing plate, or each pressing plate is connected to the mounting seat or the bottom plate by screws.
[0009] The contact electrode is an elastic electrode, and the elastic electrode can be elastically pressed by the solar cell installed therein so that the other end of the elastic electrode contacts with the lead-out electrode for electrical conduction.
[0010] A mounting hole for mounting the contact electrode is arranged on the bottom of the insertion groove, and a spring is arranged between the contact electrode and the mounting hole to form an elastic electrode.
[0011] The utility model discloses a probe station for testing solar cells, which adopts the following technical scheme: a probe station for testing solar cells, comprising a device frame and a sealed box, wherein the sealed box is provided with a clamp for fixing the solar cell and a test probe, a transparent window is provided on the side of the sealed box, and a lighting fixture for imitating sunlight corresponding to the transparent window is provided on the device frame; the clamp comprises an insulating mounting seat, the mounting seat has a loading groove for loading the solar cell, and the bottom of the loading groove is provided with conductive contact electrodes corresponding to and contacting the positive and negative electrodes on one side of the solar cell; the clamp also comprises an insulating bottom plate arranged on the mounting seat, and a lead-out electrode connected to the corresponding contact electrode is provided on the bottom plate for contact by the test probe; a limiting and fixing structure for limiting and fixing the solar cell is provided on the mounting seat or the bottom plate.
[0012] The position limiting and fixing structure comprises a pressing plate, and the pressing plate is used to contact the light receiving surface of the solar cell to fix the solar cell.
[0013] The number of the pressing plates is at least two, each pressing plate is rotatably disposed on the mounting seat and the solar cell is fixed or released by rotating the pressing plate, or each pressing plate is connected to the mounting seat or the bottom plate by screws.
[0014] The contact electrode is an elastic electrode, and the elastic electrode can be elastically pressed by the solar cell installed therein so that the other end of the elastic electrode contacts with the lead-out electrode for electrical conduction.
[0015] A mounting hole for mounting the contact electrode is arranged on the bottom of the insertion groove, and a spring is arranged between the contact electrode and the mounting hole to form an elastic electrode.
[0016] Beneficial effects of the utility model: the fixture in the present application can lead out the positive and negative electrodes on one side of the solar cell. When testing, it is only necessary to connect from the corresponding lead-out electrodes of the fixture, avoiding the problem of inconvenience in lead-in due to the design structure of the positive and negative electrodes on the solar cell, and it is very convenient to use. The lead-in can be carried out stably and accurately, and the loading and unloading of the solar cell is very convenient, which can also greatly improve the test efficiency of the solar cell. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a schematic diagram of the structure of a solar cell in the background technology Figure 1 ;
[0018] Figure 2 This is a schematic diagram of the structure of a solar cell in the background technology Figure 2 ;
[0019] Figure 3 A structural schematic diagram of an embodiment of a probe station for testing solar cells according to the utility model;
[0020] Figure 4 yes Figure 3 A schematic diagram of the structure inside the sealed box;
[0021] Figure 5 yes Figure 4 A partial enlarged view of the middle A;
[0022] Figure 6 yes Figure 5 Schematic diagram of the structure after removing the solar cell;
[0023] Figure 7 yes Figure 2 Schematic diagram of the exploded structure of the middle fixture. DETAILED DESCRIPTION
[0024] In order to facilitate the understanding of the present invention, the present invention is described in more detail below in conjunction with the accompanying drawings and specific embodiments. The accompanying drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.
[0025] It should be noted that, unless otherwise defined, the technical and scientific terms used in this specification have the same meanings as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.
[0026] An embodiment of a solar cell testing probe station of the utility model is as follows Figure 3-Figure 7 As shown, it includes a device frame 5 and a sealed box 8, and a lighting fixture 10 for imitating sunlight is arranged on the device frame. In this embodiment, the device frame includes a base plate 7 and a mounting rod 6 arranged on the base plate, the sealed box is arranged on the base plate, and the lighting fixture is installed on the mounting rod. For the convenience of operation, the lighting fixture can be installed on the mounting rod in an upward, downward, leftward, leftward, and rightward manner. The specific implementation structure belongs to the prior art, and the specific structure is not described in detail in this embodiment. Of course, the lighting fixture can also be fixed on the mounting rod.
[0027] A clamp 11 and a test probe 14 for fixing the solar cell 12 are provided in the sealed box 8. The structure of the solar cell in this embodiment is the same as that of the solar cell in the background technology. The test probe belongs to the prior art, refer to the test probe in the probe station previously applied by the applicant, and the specific structure and installation structure are not described in detail in this embodiment. A transparent window 9 is provided on the side of the sealed box 8, and the transparent window 9 is correspondingly arranged with the lighting fixture 10 above, so that the light emitted by the lighting fixture can be irradiated on the light-receiving surface of the solar cell to be tested through the transparent window. A hot stage 13 is provided in the sealed box 8, and the clamp is arranged on the hot stage. Different temperature environments are created by the hot stage. The hot stage belongs to the prior art. Its specific structure and working principle are not described in detail in this embodiment, refer to the hot stage related patents previously applied by the applicant. Of course, the hot stage can also be replaced by a cold stage to create a low-temperature environment. In other embodiments, a low-temperature environment can also be achieved by introducing cold air of different temperatures into the sealed box.
[0028] In this embodiment, the fixture 11 includes an insulating mounting seat 15, the mounting seat has a loading groove 18 for loading the solar cell, and the bottom of the loading groove is provided with a contact electrode 19 for correspondingly setting and contacting the positive and negative electrodes on one side of the solar cell. The fixture also includes an insulating bottom plate 16 arranged on the mounting seat, and a lead-out electrode 17 connected to the corresponding contact electrode is arranged on the bottom plate for contact by the test probe. In this embodiment, the mounting seat and the bottom plate are both made of ceramic materials. In other embodiments, the insulating material can also be made of plastic material. A limiting fixing structure for limiting and fixing the solar cell is provided on the mounting seat. The limiting fixing structure includes a pressing plate 20, which is used to contact the light-receiving surface of the solar cell to achieve the fixation of the solar cell. Specifically, the number of pressing plates is at least two, and in this embodiment, it is four. Each pressing plate is rotatably arranged on the mounting seat, and the fixing or release of the solar cell is achieved by rotating the pressing plate. In other embodiments, each pressing plate can also be connected to the mounting seat by screws. In other embodiments, the number of pressing plates can also be two and arranged oppositely. In other embodiments, the pressing plate can also be arranged on the bottom plate.
[0029] In this embodiment, the contact electrode 19 is an elastic electrode. In this embodiment, the elastic electrode refers to an elastic electrode that can be loaded with a solar cell and has a certain elastic contraction when squeezed, and can cooperate with the pressure plate to fix the solar cell, and can also ensure reliable contact between the contact electrode and the positive and negative electrodes of the solar cell. However, the specific structure of the elastic electrode is not limited. For example, in this embodiment, the elastic electrode can be elastically pressed by the loaded solar cell so that the other end of the elastic electrode contacts and conducts electricity with the lead-out electrode. Specifically, the bottom of the slot 18 is provided with mounting holes 21 for each contact electrode to be installed one by one, and a spring (not shown in the figure) is provided between the contact electrode and the mounting hole to form an elastic electrode. In other embodiments, the spring may not be provided, and a contact electrode with elasticity itself may be selected. At this time, the fixed part of the elastic electrode is fixedly installed with the mounting seat and contacts with the lead-out electrode of the bottom plate below, and the movable part of the elastic electrode is squeezed by the loaded solar cell to elastically contract and deform.
[0030] When in use, the solar cell to be tested is installed in the mounting seat of the fixture, and the electrode of the solar cell will press the corresponding contact electrode downward, and then the solar cell is fixed and the electrode of the solar cell and the corresponding contact electrode are reliably released by rotating the pressure plate. The lower end of the contact electrode contacts the lead-out electrode of the bottom plate, and the needle of the test probe is pressed against the corresponding lead-out electrode. The light is irradiated on the solar cell through the lighting fixture, and the solar cell converts the light energy into electrical energy, which is led to the test probe through the lead-out electrode, and then to the instrument connected to the test probe.
[0031] In the above description of this specification, unless otherwise clearly specified and limited, the terms "fixed", "installed", "connected" or "connected" should be understood in a broad sense. For example, with regard to the term "connection", it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. Therefore, unless otherwise clearly defined in this specification, those skilled in the art can understand the specific meanings of the above terms in this utility model according to the specific circumstances.
[0032] According to the above description of this specification, those skilled in the art may also understand that the terms used below, such as "up", "down", "front", "back", "left", "right", "length", "width", "thickness", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", "center", "longitudinal", "lateral", "clockwise" or "counterclockwise", etc., which indicate the orientation or position relationship, are based on the orientation or position relationship shown in the drawings of this specification, and are only for the purpose of facilitating the explanation of the scheme of the utility model and simplifying the description, rather than explicitly or implicitly indicating that the device or element involved must have the specific orientation, be constructed and operate in a specific orientation. Therefore, the above-mentioned orientation or position relationship terms cannot be understood or interpreted as limitations on the scheme of the utility model.
[0033] In addition, the terms "first" or "second" used in this specification to refer to numbers or ordinals are only used for descriptive purposes and cannot be understood as explicitly or implicitly indicating 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 such feature. In the description of this specification, the meaning of "plurality" is at least two, such as two, three or more, etc., unless otherwise clearly and specifically defined.
[0034] The structure of the embodiment of the solar cell testing fixture of the present invention is the same as that of the fixtures in the above embodiments of the solar cell testing probe station, and will not be described in detail herein.
Claims
1. A solar cell testing fixture, characterized in that: The invention comprises an insulating mounting seat, the mounting seat has a loading groove for loading the solar cell, and the bottom of the loading groove is provided with conductive contact electrodes corresponding to and contacting the positive and negative electrodes on one side of the solar cell; the clamp also comprises an insulating bottom plate arranged on the mounting seat, and the bottom plate is provided with lead-out electrodes connected to the corresponding contact electrodes; the mounting seat or the bottom plate is provided with a limiting and fixing structure for limiting and fixing the solar cell; the limiting and fixing structure comprises a pressing plate, and the pressing plate is used to contact the light-receiving surface of the solar cell to fix the solar cell.
2. The solar cell testing fixture according to claim 1, characterized in that: The number of the pressing plates is at least two, each pressing plate is rotatably disposed on the mounting seat and the solar cell is fixed or released by rotating the pressing plate, or each pressing plate is connected to the mounting seat or the bottom plate by screws.
3. The solar cell testing fixture according to claim 1 or 2, characterized in that: The contact electrode is an elastic electrode, and the elastic electrode can be elastically pressed by the solar cell installed therein so that the other end of the elastic electrode contacts with the lead-out electrode for electrical conduction.
4. The solar cell testing fixture according to claim 3, characterized in that: A mounting hole for mounting the contact electrode is arranged on the bottom of the insertion groove, and a spring is arranged between the contact electrode and the mounting hole to form an elastic electrode.
5. A probe station for testing solar cells, characterized in that: It comprises a device frame and a sealed box body, wherein a clamp and a test probe for fixing the solar cell are arranged in the sealed box body, a transparent window is arranged on the side of the sealed box body, and a lighting fixture for imitating sunlight corresponding to the transparent window is arranged on the device frame; the clamp comprises an insulating mounting seat, the mounting seat has a loading groove for loading the solar cell, and the bottom of the loading groove is provided with a contact electrode for correspondingly setting and contacting the positive and negative electrodes on one side of the solar cell for electrical conduction; the clamp also comprises an insulating bottom plate arranged on the mounting seat, and the bottom plate is provided with a lead-out electrode connected to the corresponding contact electrode for contact by the test probe; a limiting fixing structure for limiting and fixing the solar cell is arranged on the mounting seat or the bottom plate; the limiting fixing structure comprises a pressing plate, and the pressing plate is used to contact with the light-receiving surface of the solar cell to achieve fixation of the solar cell.
6. The solar cell testing probe station according to claim 5, characterized in that: The number of the pressing plates is at least two, each pressing plate is rotatably disposed on the mounting seat and the solar cell is fixed or released by rotating the pressing plate, or each pressing plate is connected to the mounting seat or the bottom plate by screws.
7. The solar cell testing probe station according to claim 5 or 6, characterized in that: The contact electrode is an elastic electrode, and the elastic electrode can be elastically pressed by the solar cell installed therein so that the other end of the elastic electrode contacts with the lead-out electrode for electrical conduction.
8. The solar cell testing probe station according to claim 7, characterized in that: A mounting hole for mounting the contact electrode is arranged on the bottom of the insertion groove, and a spring is arranged between the contact electrode and the mounting hole to form an elastic electrode.