Pretreatment device and detection system for detecting performance of solar cell
By using an exciter to quickly bring perovskite solar cells to a steady state, the problem of excessively long testing time for perovskite solar cells is solved, enabling rapid and accurate photovoltaic performance testing, which is suitable for industrial production.
Patent Information
- Application Number
- CN202422613764.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-29
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-10-29
AI Technical Summary
In existing technologies, perovskite solar cells require tens of minutes to reach a steady state from a metastable state during testing, resulting in excessively long photovoltaic performance testing times that are difficult to meet the rapid testing requirements of large-scale industrial production.
Devices such as exciters, infrared lamps, heaters, or voltage applicators are used to enable perovskite solar cells to quickly reach a steady state from a metastable state, and a pretreatment device shortens the detection time to less than 5 minutes.
This method significantly reduces the testing time for perovskite solar cell photovoltaic performance while ensuring testing accuracy, thereby improving testing accuracy and efficiency and making it suitable for large-scale industrial production.
Smart Images
Figure CN223502833U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of solar cell testing technology, and in particular to a pretreatment device and testing system for testing the performance of solar cells. Background Technology
[0002] Perovskite solar cells and their modules remain in a metastable state after processing. To accurately measure and evaluate their photovoltaic performance, they need to be excited to a steady state first. Currently, there is no dedicated testing device for the characteristics of perovskite solar cells; the testing of their characteristics still relies on traditional equipment used for testing the performance of crystalline silicon cells and modules.
[0003] The IV characteristic curves of crystalline silicon cells and their modules were tested using a solar transient simulator and a fast scanning electron load in a standard test environment (25°C, 1000 W / m²). 2 The detection was performed under AM1.5G, and the entire IV characteristic curve scan time did not exceed 100ms. However, the material properties of perovskite solar cells are different from those of crystalline silicon cells. Perovskite solar cells have problems such as ion migration, hysteresis effect, and slow photoelectric response. Therefore, when testing the IV characteristic curve of perovskite solar cell devices, a steady-state simulator is required. In addition, during the testing process, it is often necessary to first perform light wetting under simulated sunlight to make it reach a steady state from a metastable state in order to reduce Frenkel defects, interface nonradiative recombination defects, etc. However, this process often takes tens of minutes, which is not conducive to the rapid detection and accurate evaluation of the photovoltaic performance of perovskite solar cells in large-scale industrial production.
[0004] Therefore, there is a need to develop a device that can improve the speed of photovoltaic performance testing of perovskite solar cells. Utility Model Content
[0005] Therefore, it is necessary to provide a pre-processing device and testing system for testing the performance of perovskite solar photovoltaic cells, addressing the problem of excessively long testing times in existing methods.
[0006] A pretreatment device for detecting the performance of solar cells includes a housing, an exciter, and a power source; the exciter is disposed inside the housing.
[0007] The aforementioned pretreatment device for testing the performance of solar cells enables perovskite solar cells to rapidly transition from a metastable state to a steady state through excitation by an exciter. While ensuring the accuracy of testing (such as IV testing and MPPT testing), it reduces the photovoltaic performance testing time (such as IV testing and MPPT testing) of perovskite solar cells to less than 5 minutes, greatly saving testing time and improving testing accuracy.
[0008] Under initial illumination, electrons in a photovoltaic (PV) device absorb light energy and transition from the ground state to a higher energy level, known as the excited state. In the excited state, electrons possess higher energy and can undergo physicochemical processes impossible in the ground state, such as electron transitions, energy transfer, and electron-hole pair separation. The excited electrons and holes are separated and transported to the corresponding electrodes, generating current. With continuous illumination, the output parameters of the PV device (such as current and voltage) gradually reach a stable value, known as the steady state. In the steady state, the generation, separation, transport, and recombination of photogenerated carriers (electron-hole pairs) in the PV device reach dynamic equilibrium. Steady-state efficiency refers to the efficiency of the PV device when the output current tends to stabilize under continuous illumination. This efficiency value is closer to the actual operating efficiency of the battery and is therefore of great significance for evaluating the performance of PV cells.
[0009] In one embodiment, the power source is an external power source.
[0010] In one embodiment, the exciter is an infrared lamp, which is disposed at the top inside the housing.
[0011] In one embodiment, the pretreatment device for detecting the performance of solar cells further includes a heat sink disposed at the bottom of the housing.
[0012] In one embodiment, the radiator is a water-cooled radiator.
[0013] In one embodiment, the upper surface of the water-cooled radiator is provided with a sample placement area.
[0014] In one embodiment, the infrared light emits infrared light with a wavelength of 0.5 μm to 4.5 μm.
[0015] In one embodiment, the activator is a heater, which is disposed at the bottom end inside the housing.
[0016] In one embodiment, the upper surface of the heater is provided with a sample placement area.
[0017] In one embodiment, the exciter is a voltage applicator disposed at the bottom end inside the housing.
[0018] In one embodiment, the voltage applicator is a DC regulated power supply meter.
[0019] In one embodiment, the DC regulated power supply has a positive terminal and a negative terminal connected to it. The positive and negative terminals are used to connect to the perovskite solar cell to be tested.
[0020] In one embodiment, the pretreatment apparatus for detecting the performance of solar cells further includes a sample placement stage, which is disposed above the DC regulated power supply meter.
[0021] In one embodiment, the pretreatment device for detecting the performance of solar cells further includes a door. The door is connected to the housing.
[0022] This invention also provides a system for detecting the performance of solar cells, including a preprocessing device for detecting the performance of solar cells and a steady-state solar simulator as described above.
[0023] Compared with the prior art, the present invention has the following beneficial effects:
[0024] This invention discloses a pretreatment device and detection system for detecting the performance of solar cells. By exciting the perovskite solar cells with an exciter, the device rapidly moves them from a metastable state to a steady state. While ensuring the accuracy of detection (such as IV testing and MPPT testing), the device shortens the photovoltaic performance detection time of perovskite solar cells (such as IV testing and MPPT testing) to less than 5 minutes, greatly saving testing time and improving testing accuracy. This equipment enables rapid detection and accurate evaluation of the photovoltaic performance of perovskite solar cells in large-scale industrial production. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the pretreatment device for detecting the performance of solar cells in Example 1;
[0026] Figure 2 This is a schematic diagram of the pretreatment device for detecting the performance of solar cells in Example 2;
[0027] Figure 3 This is a schematic diagram of the pretreatment device for detecting the performance of solar cells in Example 3;
[0028] Explanation of reference numerals in the attached drawings: 1. Pre-treatment device for testing the performance of solar cells; 11. Housing; 121. Infrared lamp; 122. Heater; 123. Voltage applicator; 1231. Positive terminal connector; 1232. Negative terminal connector; 13. External power supply; 14. Water-cooled radiator; 15. Sample placement area / sample placement stage; 16. Door. Detailed Implementation
[0029] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.
[0030] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.
[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0032] Example 1
[0033] A pretreatment device (1) for detecting the performance of solar cells, such as Figure 1 As shown, the device includes a housing (11), an exciter, an external power supply (13), a water-cooled radiator (14), a sample placement area (15), and a door (16). The exciter is an infrared lamp (121), which emits infrared light with a wavelength of 0.5μm to 4.5μm and has a power of 375W. The infrared lamp (121) is located at the top inside the housing (11). The water-cooled radiator (14) is located at the bottom inside the housing (11), and the sample placement area (15) is located on the upper surface of the water-cooled radiator (14). The door (16) is located on the housing (11).
[0034] The method of using the above-mentioned pretreatment device (1) for testing the performance of solar cells:
[0035] 1. After the device is powered on, turn on the water cooling radiator (14).
[0036] 2. Place the perovskite solar cell (device) on the sample placement area (15), turn on the infrared lamp (121), and irradiate for 0.5~5 minutes.
[0037] 3. After the irradiation stops, once the temperature of the perovskite solar cell (device) has dropped to room temperature, its photovoltaic performance can be tested using a steady-state solar simulator, such as IV testing or MPPT testing, according to conventional methods.
[0038] Example 2
[0039] A pretreatment device (1) for detecting the performance of solar cells, such as Figure 2As shown, it includes a housing (11), an exciter, an external power supply (13), a sample placement area (15), and a door (16). The exciter is a heater (122) (a constant temperature heating stage), which is located at the bottom inside the housing (11); the sample placement area (15) is located on the upper surface of the heater (122); and the door (16) is located on the housing (11).
[0040] The method of using the above-mentioned pretreatment device (1) for testing the performance of solar cells:
[0041] 1. Place the perovskite solar cell (device) on the sample placement area (15), turn on the power, turn on the constant temperature heating stage, set the temperature to 70~120℃, start timing when the temperature reaches the set temperature value, and the time is 1~8min.
[0042] 2. After heating is stopped, once the temperature of the perovskite solar cell (device) drops to room temperature, photovoltaic performance testing, such as IV testing or MPPT testing, can be performed using a steady-state solar simulator according to conventional methods.
[0043] Example 3
[0044] A pretreatment device (1) for detecting the performance of solar cells, such as Figure 3 As shown, the device includes a housing (11), an exciter, an external power supply (13), a sample placement stage (sample placement area) (15), and a door (16). The exciter is a voltage applicator (123), which is a DC regulated power supply meter. The DC regulated power supply meter is located at the bottom inside the housing (11), and a positive terminal (1231) and a negative terminal (1232) are connected to the DC regulated power supply meter. The sample placement stage (15) is located above the DC regulated power supply meter. The door (16) is located on the housing (11).
[0045] The method of using the above-mentioned pretreatment device (1) for testing the performance of solar cells:
[0046] 1. Place the perovskite solar cell (device) on the sample placement stage (15), connect the positive terminal (1231) of the DC regulated power meter to the positive terminal of the cell (device), and connect the negative terminal (1232) of the DC regulated power meter to the negative terminal of the cell (device).
[0047] 2. Connect the device to the power supply and apply a voltage of (1.1~1.2)×N volts to the perovskite solar cell (N is the number of perovskite solar cells, N≥1). When the module voltage stabilizes, maintain this voltage for 0.5~3 minutes. Then, the photovoltaic performance of the perovskite solar cell (device) can be tested using a steady-state solar simulator according to conventional methods, such as IV test or MPPT test.
[0048] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above 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.
[0049] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A pretreatment device for detecting the performance of solar cells, characterized in that, It includes a housing, an exciter, and a power supply; the exciter is disposed inside the housing; The exciter is an infrared lamp, a voltage applicator, or a heater.
2. The pretreatment apparatus for detecting the performance of solar cells according to claim 1, characterized in that, The infrared lamp is located at the top inside the housing.
3. The pretreatment apparatus for detecting the performance of solar cells according to claim 2, characterized in that, The device for detecting the performance of solar cells also includes a heat sink, which is disposed at the bottom of the housing.
4. The pretreatment apparatus for detecting the performance of solar cells according to claim 3, characterized in that, The radiator is a water-cooled radiator.
5. The pretreatment apparatus for detecting the performance of solar cells according to claim 2, characterized in that, The infrared light emitted by the infrared lamp has a wavelength of 0.5μm to 4.5μm.
6. The pretreatment apparatus for detecting the performance of solar cells according to claim 1, characterized in that, The heater is located at the bottom of the housing.
7. The pretreatment apparatus for detecting the performance of solar cells according to claim 1, characterized in that, The voltage applicator is located at the bottom inside the housing.
8. The pretreatment apparatus for detecting the performance of solar cells according to claim 7, characterized in that, The voltage applicator is a DC regulated power supply meter.
9. The pretreatment apparatus for detecting the performance of solar cells according to claim 7, characterized in that, It also includes a sample placement stage, which is disposed above the voltage applicator.
10. A testing system for detecting the performance of solar cells, characterized in that, Includes the pretreatment device for detecting the performance of solar cells and the steady-state solar simulator as described in any one of claims 1 to 9.