An apparatus for testing photoelectric conversion efficiency

Abstract

The utility model relates to detection technical field especially, and it is a kind of instrument device for testing photoelectric conversion efficiency.The utility model provides a kind of instrument device for testing photoelectric conversion efficiency, including photoelectric conversion efficiency tester and electrical interface etc., and photoelectric conversion efficiency tester top left and right symmetry is equipped with electrical interface.By setting up the mechanical linkage self-locking mechanism of sliding rod, limit block, spring and connecting block, the quick connection and disconnection of electrode circuit are realized, and the stability of connection state is ensured, when operating, just need to push connecting rod, can drive sliding rod to move, compress spring and release the locking of connecting block, to drive sliding plate along guide rod to slide steadily, make electrode line and test appearance inside electrical interface realize reliable contact;After releasing external force, spring resets, pushes limit block and connecting block and reengages, forms self-locking structure, effectively prevents the connection slackening caused by vibration or accidental touch.

Description

Technical Field

[0001] This utility model relates to the field of detection technology, and in particular to an instrument for testing photoelectric conversion efficiency. Background Technology

[0002] An instrument for testing photoelectric conversion efficiency is a scientific device specifically designed to evaluate the ability of a solar cell to convert light energy into electrical energy. It calculates the photoelectric conversion efficiency of the device by irradiating the sample under test with light of a specific wavelength and accurately measuring the resulting photocurrent.

[0003] Traditional photoelectric conversion efficiency testers generally use bare wires for manual wiring or fixed probe crimping, which has problems such as cumbersome operation, unstable contact resistance, easy damage to fragile samples (such as perovskite thin films and organic semiconductors), and exposed circuits that are susceptible to contamination, seriously affecting the repeatability, accuracy and efficiency of test data.

[0004] To address the aforementioned issues, there is a need for an instrument with protective features for testing photoelectric conversion efficiency. Utility Model Content

[0005] To overcome the drawbacks of manual wiring, such as cumbersome operation, unstable contact resistance, and easy damage to fragile samples, this invention provides an instrument for testing photoelectric conversion efficiency.

[0006] The technical solution of this utility model is: an instrument device for testing photoelectric conversion efficiency, comprising a photoelectric conversion efficiency tester, an electrical interface, a mounting frame, guide rods, a sliding plate, electrode wires, a connecting block, a connecting plate, a sliding rod, a limiting block, and a spring. The photoelectric conversion efficiency tester has symmetrically arranged electrical interfaces on its top left and right sides. A mounting frame is installed on the top of the tester. Guide rods are symmetrically arranged on the left and right sides inside the mounting frame. A sliding plate is slidably connected between the two guide rods. Electrode wires are symmetrically arranged on the sliding plate, and both electrode wires pass through the mounting frame. A connecting block is connected to the front side of the sliding plate, and the connecting block slides in cooperation with the mounting frame. A connecting plate is connected to the front side of the mounting frame, and a sliding rod is slidably connected inside the connecting plate. A limiting block is connected to the left end of the sliding rod, and the limiting block contacts and cooperates with the connecting block. A spring is provided between the limiting block and the connecting plate.

[0007] As an improvement to the above solution, it also includes a protective frame, a baffle, a first magnet and a second magnet. The photoelectric conversion efficiency tester is provided with a protective frame on the rear side, a baffle is snapped onto the protective frame, a first magnet is provided on the rear side of the protective frame, and a second magnet is provided on the baffle. The first magnet and the second magnet are magnetically attracted to each other.

[0008] As an improvement to the above solution, it also includes straps, hook and loop fasteners, and loop fasteners with a rough surface. The protective frame is symmetrically provided with straps distributed vertically on the left and right sides. The two straps on the right side are provided with hook and loop fasteners, and the two straps on the left side are provided with loop fasteners.

[0009] As an improvement to the above solution, an observation window is also included, with an observation window embedded in the rear side of the protective frame.

[0010] As an improvement to the above solution, a connecting rod is also included, with the right end of the sliding rod connected to the connecting rod.

[0011] As an improvement to the above solution, the connecting block is cross-shaped.

[0012] As an improvement to the above solution, each strap is made of nylon braided strap.

[0013] As an improvement to the above solution, each guide rod is made of stainless steel.

[0014] The beneficial effects of this utility model are as follows: By setting up a mechanical linkage self-locking mechanism consisting of a sliding rod, a limiting block, a spring, and a connecting block, the electrode circuit can be quickly connected and disconnected, and the stability of the connection state can be ensured. During operation, simply push the connecting rod to move the sliding rod, compress the spring and release the locking of the connecting block, thereby driving the sliding plate to slide smoothly along the guide rod, so that the electrode wire can make reliable contact with the internal electrical interface of the tester. After the external force is released, the spring returns to its original position, pushing the limiting block and the connecting block to re-engage, forming a self-locking structure. This effectively prevents the connection from loosening due to vibration or accidental contact, and avoids poor contact, loose connection or mechanical damage to fragile samples such as perovskite caused by improper force control in traditional manual wiring. It significantly improves the reliability of electrical signal transmission and the repeatability of test data. At the same time, the entire connection process is simple to operate and responds quickly. No tools are required to complete the on / off operation, which greatly improves the efficiency of testing multiple batches of samples. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a three-dimensional structural diagram of the components of this utility model, including the strap, hook and loop fastener, and observation window.

[0017] Figure 3 This is a cross-sectional view of the protective frame of this utility model.

[0018] Figure 4 This is a three-dimensional structural diagram of the mounting frame, guide rod, and sliding plate of this utility model.

[0019] Figure 5This is a three-dimensional structural diagram of the sliding rod, limiting block, and spring components of this utility model.

[0020] The labels in the diagram are as follows: 1. Photoelectric conversion efficiency tester; 2. Electrical interface; 3. Mounting frame; 4. Guide rod; 5. Sliding plate; 6. Electrode wire; 7. Connecting block; 8. Connecting plate; 9. Sliding rod; 10. Limiting block; 11. Spring; 12. Protective frame; 13. Baffle; 14. First magnet; 15. Second magnet; 16. Strap; 17. Hook and loop fastener; 18. Hook and loop fastener; 19. Observation window; 20. Connecting rod. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example: An instrument for testing photoelectric conversion efficiency, such as... Figures 1-5As shown, the device includes a photoelectric conversion efficiency tester 1, an electrical interface 2, a mounting frame 3, a guide rod 4, a sliding plate 5, electrode wires 6, a connecting block 7, a connecting plate 8, a sliding rod 9, a limiting block 10, a spring 11, a protective frame 12, a baffle 13, a first magnet 14, a second magnet 15, a strap 16, a hook and loop fastener 17, a loop fastener 18, an observation window 19, and a connecting rod 20. The photoelectric conversion efficiency tester 1 has symmetrically arranged electrical interfaces 2 on its top left and right sides, providing standardized electrical connection ports for the electrode wires 6. The mounting frame 3 is installed on the top of the photoelectric conversion efficiency tester 1, and the mounting frame 3 has symmetrically arranged... Guide rods 4, each made of stainless steel, provide a linear guide track for the sliding plate 5. A sliding plate 5 is slidably connected between two guide rods 4. Electrode wires 6 are symmetrically mounted on the sliding plate 5, both of which pass through the mounting frame 3. The electrode wires 6 are used to connect the sample to the test system's conductive circuit. A connecting block 7 is connected to the front of the sliding plate 5, slidingly engaging with the mounting frame 3. The connecting block 7 is cross-shaped and serves as a component for transmitting motion and limiting the position. A connecting plate 8 is connected to the front of the mounting frame 3, with a sliding rod 9 slidably connected inside. The left end of the sliding rod 9 is connected to a limiting mechanism. Position block 10 and limiting block 10 are in contact with connecting block 7. When external force is released, they mechanically engage with connecting block 7 under the action of spring 11, locking the position of sliding plate 5 and preventing loosening due to vibration, thus ensuring electrical continuity during testing. Spring 11 is provided between limiting block 10 and connecting plate 8. A protective frame 12 is provided on the rear side of photoelectric conversion efficiency tester 1 to accommodate and protect electrode wire 6 and other connecting components. A baffle 13 is snapped onto the protective frame 12, a detachable closed structure used to seal the internal space of the protective frame 12. A first magnet 14 is provided on the rear side of the protective frame 12. The first magnet 14 is magnetically attracted to the second magnet 15. The protective frame 12 has symmetrical straps 16 distributed vertically on both sides to fix the entire device to the experimental table, support or instrument shell to prevent displacement or tipping during the test and improve stability. Each strap 16 is a nylon braided strap with high strength and tensile strength. The two straps 16 on the right side are equipped with hook and loop fasteners 17, and the two straps 16 on the left side are equipped with hook and loop fasteners 18. The rear side of the protective frame 12 is inlaid with an observation window 19, and the right end of the sliding rod 9 is connected to a connecting rod 20.

[0023] When conducting photoelectric conversion efficiency tests, the photovoltaic device under test (such as perovskite solar cells, silicon-based cells, etc.) is first placed on the test platform, ensuring that its positive and negative electrodes are exposed and aligned. The operator pulls the baffle 13 on the protective frame 12 backward, causing the second magnet 15 on the baffle 13 to disengage from the first magnet 14 on the rear side of the protective frame 12, opening the protective structure. Then, two electrode wires 6 are pulled out from inside the protective frame 12, and their probes are connected to the positive and negative electrodes of the sample, respectively, completing the electrical connection at the sample end. After connection, the connecting rod 20 is pushed, causing the sliding rod 9 to move to the right. The limiting block 10 at the left end of the sliding rod 9 moves accordingly, compressing the spring 11 between it and the connecting plate 8, thereby releasing the lock on the connecting block 7. At this time, the sliding plate 5 slides downward under the guidance of the guide rod 4, causing the electrode wire 6 to move downward as a whole, so that the other end of the electrode wire 6 makes reliable contact with the electrical interface 2 at the top of the photoelectric conversion efficiency tester 1, completing the electrical connection at the instrument end. When the external force is released, the spring 11 returns to its original deformation, pushing the limiting block 10 to reset to the left and maintain contact with the connecting block 7, forming a stable limiting structure to prevent the sliding plate 5 from being locked. To ensure the continuity and stability of electrical signal transmission during testing, in case of vibration or accidental contact, the device may retract. To improve device stability, operators can use the nylon braided straps on both sides of the protective frame 12 to fix the device to the experimental table or support via the Velcro hook side 17 and the rough side. Then, the photoelectric conversion efficiency tester 1 can be started to accurately measure parameters such as external quantum efficiency (EQE) or IPCE of the sample. After the test is completed, first disconnect the electrode wire 6 from the sample, then push the connecting rod 20 again to release the locking of the limiting block 10 to the connecting block 7, slide the sliding plate 5 backward to reset it, so that the electrode wire 6 is disengaged from the internal interface of the instrument. After releasing the connecting rod 20, the spring 11 drives the sliding rod 9 and the limiting block 10 to automatically reset. Finally, the electrode wire 6 is neatly stored in the protective frame 12, and the baffle 13 is pushed back to its original position, so that it is firmly closed under the magnetic adsorption of the first magnet 14 and the second magnet 15, achieving dustproof, damage-proof, and convenient storage and transportation.

[0024] It should be understood that the above description is for illustrative purposes only and is not intended to limit the present invention. Those skilled in the art will understand that variations of the present invention will be included within the scope of the claims herein.

Claims

1. An instrument for testing photoelectric conversion efficiency, characterized in that: The device includes a photoelectric conversion efficiency tester (1), an electrical interface (2), a mounting frame (3), guide rods (4), a sliding plate (5), electrode wires (6), a connecting block (7), a connecting plate (8), a sliding rod (9), a limiting block (10), and a spring (11). The photoelectric conversion efficiency tester (1) has electrical interfaces (2) symmetrically arranged on the top left and right. The top of the photoelectric conversion efficiency tester (1) is equipped with a mounting frame (3). Guide rods (4) are symmetrically arranged on the top left and right of the mounting frame (3). A sliding plate (5) is slidably connected between the two guide rods (4). (5) Electrode wires (6) are installed symmetrically on the left and right sides inside. Both electrode wires (6) pass through the mounting frame (3). A connecting block (7) is fixedly connected to the middle of the front side of the sliding plate (5). The connecting block (7) slides with the mounting frame (3). A connecting plate (8) is fixedly connected to the right side of the front side of the mounting frame (3). A sliding rod (9) is slidably connected inside the connecting plate (8). A limit block (10) is connected to the left end of the sliding rod (9). The limit block (10) contacts and cooperates with the connecting block (7). A spring (11) is provided between the limit block (10) and the connecting plate (8).

2. The instrument for testing photoelectric conversion efficiency as described in claim 1, characterized in that: It also includes a protective frame (12), a baffle (13), a first magnet (14) and a second magnet (15). The photoelectric conversion efficiency tester (1) is equipped with a protective frame (12) on the back side. A baffle (13) is snapped into the bottom of the back side of the protective frame (12). A first magnet (14) is provided at the bottom of the back side of the protective frame (12). A second magnet (15) is provided on the back side of the baffle (13). The first magnet (14) and the second magnet (15) are magnetically attracted to each other.

3. The instrument device for testing photoelectric conversion efficiency as described in claim 2, characterized in that: It also includes straps (16), hook and loop fasteners (17) and loop and loop fasteners (18). The protective frame (12) is symmetrically provided with straps (16) distributed vertically on the left and right sides. The two straps (16) on the right side are provided with hook and loop fasteners (17), and the two straps (16) on the left side are provided with loop and loop fasteners (18).

4. The instrument for testing photoelectric conversion efficiency as described in claim 3, characterized in that: It also includes an observation window (19), which is embedded on the rear side of the protective frame (12).

5. The instrument for testing photoelectric conversion efficiency as described in claim 4, characterized in that: It also includes a connecting rod (20), and the right end of the sliding rod (9) is fixedly connected to the connecting rod (20).

6. The instrument for testing photoelectric conversion efficiency as described in claim 5, characterized in that: The connecting block (7) is cross-shaped.

7. The instrument for testing photoelectric conversion efficiency as described in claim 6, characterized in that: Each strap (16) is a nylon braided strap.

8. The instrument for testing photoelectric conversion efficiency as described in claim 7, characterized in that: Each guide rod (4) is made of stainless steel.

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