A multimodal perovskite and stacked battery comprehensive test system and method

Abstract

The application discloses a kind of multimode perovskite and laminated battery comprehensive test system and method, wherein the system includes darkroom, test platform, LED light source module, CCD camera, laser, adjustable constant current source, electronic load and host computer;Darkroom is used to shield external ambient light, provide dark test environment;Test platform is installed in darkroom, and test platform is used to place the battery to be measured on;LED light source module is used to provide test light source;CCD camera is used to capture the optical signal generated by the battery to be measured during testing;Laser is used to emit laser beam to excite the battery to be measured to generate specific optical response;Adjustable constant current source and electronic load module can be electrically connected with the battery to be measured on test platform, adjustable constant current source is used to supply current to the battery to be measured, and electronic load module is used to simulate different load conditions;Host computer is used to realize intelligent control of testing process and processing and display of test data.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of photovoltaic modules, in particular to a multi-modal perovskite and tandem cell comprehensive testing system and method. BACKGROUND

[0002] In recent years, perovskite cells have shown great application potential in the photovoltaic field due to their high photoelectric conversion efficiency, low-cost preparation process, and solution processing advantages, and have become a research hotspot. However, the performance testing of perovskite cells still faces many challenges.

[0003] The existing testing technology is relatively single, usually only a single testing method is used, such as only IV (current-voltage) test is used to evaluate the basic electrical performance of the cell, or only EL (electroluminescence) test is used to analyze the defects of the cell. However, the performance of perovskite cells is influenced by multiple factors, and single testing method cannot comprehensively and accurately reflect the real performance and internal mechanism of the cell. For example, only IV test cannot deeply understand the carrier recombination process and defect distribution inside the cell; while the EL test alone can provide information about the optical properties of the material, but it is insufficient to reflect the electrical performance of the cell under actual working conditions.

[0004] With the continuous deepening of perovskite cell research, the demand for comprehensive and accurate performance evaluation of perovskite cells is increasingly urgent. Therefore, it is necessary to develop a multi-modal comprehensive testing system that can integrate IV, EL, PL (photoluminescence), QE (quantum efficiency) and other testing technologies. SUMMARY

[0005] To achieve the above purpose, the technical solution adopted by the present application is:

[0006] A multi-modal perovskite and tandem cell comprehensive testing system, comprising a darkroom, a testing platform, an LED light source module, a CCD camera, a laser, an adjustable constant current source, an electronic load and an upper computer;

[0007] The darkroom is used to shield external ambient light and provide a dark testing environment;

[0008] The testing platform is installed in the darkroom, and the testing platform is used to place the battery to be tested, and the testing platform has a testing probe for connecting the battery to be tested;

[0009] The LED light source module is installed in the darkroom and is used to provide a testing light source;

[0010] The CCD camera is installed in the darkroom and is used to capture the light signal generated by the battery to be tested during the testing process;

[0011] An output lens of the laser is installed in the darkroom, and the laser is used to emit a laser beam to excite the battery to be tested to generate a specific optical response.

[0012] The adjustable constant current source and the electronic load module are located outside the darkroom and can be electrically connected to the battery to be tested on the test platform, the adjustable constant current source is used to supply current to the battery to be tested, and the electronic load module is used to simulate different load conditions to test the electrical performance of the battery to be tested under different loads.

[0013] The upper computer is used to realize intelligent control of the test process and processing and display of test data.

[0014] In some embodiments, the LED light source module includes a first LED light source, a second LED light source and a third LED light source.

[0015] The light emitted by the first LED light source and the second LED light source is uniformly lighted by the compound eye lens, and then collimated by the collimating lens, and then irradiated to the test platform from the front;

[0016] The light emitted by the third LED light source is irradiated to the test platform from the side;

[0017] The spectral range of the first LED light source covers 300-1200nm, which can simulate different light intensities and spectral distributions, and is used to realize IV and QE tests of the battery to be tested;

[0018] The second LED light source and the third LED light source are used together to realize light bath and light aging tests, and the irradiation range of the second LED light source and the third LED light source as a whole is 0.5-10 times the standard light intensity.

[0019] In some embodiments, the number of CCD cameras is two, and the two CCD cameras are matched with different filters and are used to capture light signals of different wavebands, respectively.

[0020] In some embodiments, the laser outputs laser beams with wavelengths of 450nm and 808nm through two output lenses, respectively, which are used to excite perovskite layers and crystalline silicon layers, respectively.

[0021] Another aspect of the present application provides a multi-modal perovskite and laminated battery comprehensive test method, which adopts the multi-modal perovskite and laminated battery comprehensive test system described above, and includes the following steps:

[0022] S1, placing the battery to be tested on the test platform and connecting the related equipment;

[0023] S2, performing an IV test;

[0024] S3, performing a QE test;

[0025] S4, performing an EL test;

[0026] S5, performing a PL test;

[0027] S6, ending the test and outputting a test report.

[0028] In some embodiments, in step S2, when performing the IV test, the first LED light source of the LED light source module outputs simulated sunlight, the second LED light source and the third LED light source do not work, the output current under different voltages is measured by adjusting the electronic load module, the data is synchronously collected by the host computer, and the current-voltage curve is drawn according to the collected data, so as to complete the IV test.

[0029] In some embodiments, in step S3, when performing the QE test, the host computer controls the first LED light source to output light of different wavelengths, and at the same time, the photogenerated current generated by the to-be-tested battery under irradiation of light of corresponding wavelengths is measured, the ratio of the photogenerated current to the number of incident photons is calculated, the quantum efficiency under different wavelengths is obtained, and the first LED light source is turned off after the test is completed.

[0030] In some embodiments, in step S4, when performing the EL test, a current is supplied to the to-be-tested battery by a adjustable constant current source, the carriers in the battery are recombined to generate fluorescent light, a CCD camera captures the fluorescent signal emitted by the to-be-tested battery, and the signal is transmitted to the host computer for analysis, the EL test is completed, and the adjustable constant current source is disconnected after the test is completed.

[0031] In some embodiments, in step S5, when performing the PL test, a laser beam of a specific wavelength and energy is emitted by a laser to irradiate the to-be-tested battery, so that the electrons in the to-be-tested battery are excited to transition, photoluminescence is generated, a CCD camera captures the photoluminescence signal, and the signal is transmitted to the host computer for analysis, the PL test is completed, and the laser is turned off after the test is completed.

[0032] In some embodiments, if long-term aging test is to be performed on the to-be-tested battery, then:

[0033] In step S5, after performing the PL test, the current total test number is recorded and increased by 1, it is judged whether the current total test number reaches a preset value, if yes, step S6 is entered, and if no, step S5' is entered.

[0034] S5', performing light aging treatment for a preset time, and then returning to step S2;

[0035] In step S5', when the light aging treatment is performed, the first LED light source of the LED light source module is not operated, the second LED light source is used as a main light source, and the third LED light source is used as an auxiliary light source, and the treatment is completed according to a preset light aging treatment intensity and time, during the treatment process, when the irradiance output is less than 5 times the standard light intensity, only the second LED light source is turned on, and when the irradiance output is not less than 5 times the standard light intensity, the second LED light source and the third LED light source are turned on at the same time.

[0036] Compared with the prior art, the multi-modal perovskite and laminated battery comprehensive test system and method provided by the application has the following beneficial effects: the application integrates IV, EL, PL, QE and other test technologies, realizes multi-modal comprehensive testing, can analyze perovskite batteries from multiple dimensions, and obtains more abundant and accurate performance data, which is of great significance for promoting the research and industrialization development of perovskite batteries, and solves the shortcomings of existing test technologies. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 A schematic diagram of a multi-modal perovskite and laminated battery comprehensive test system provided by the application is shown in the figure.

[0038] Figure 2 A light path diagram of the first LED light source and the second LED light source is shown in the figure.

[0039] BRIEF DESCRIPTION OF DRAWINGS

[0040] 1, darkroom; 2, test platform; 3, CCD camera; 4, laser; 5, adjustable constant current source; 6, electronic load; 7, upper computer; 8, compound eye lens; 9, collimating lens; 10, battery to be tested; 11, first LED light source; 12, second LED light source; 13, third LED light source; 14, output lens. DETAILED DESCRIPTION

[0041] In order to make the technical means, creative features, purposes and effects achieved by the application easy to understand, the following specific embodiments are combined to further illustrate how the application is implemented.

[0042] REFERENCE Figure 1As shown, the application provides a multi-modal perovskite and laminated battery comprehensive test system, which comprises a darkroom 1, a test platform 2, an LED light source module, a CCD camera 3, a laser 4, an adjustable constant current source 5, an electronic load 6 and an upper computer 7; the darkroom 1 is used to shield the external environmental light and provide a dark test environment; the test platform 2 is installed in the darkroom 1, and the test platform 2 is used to place a battery to be tested 10, and the test platform 2 has test probes used to connect the battery to be tested 10; the LED light source module is installed in the darkroom 1 and used to provide a test light source; the CCD camera 3 is installed in the darkroom 1 and used to capture the optical signal generated by the battery to be tested 10 during the test process; the output lens 14 of the laser 4 is installed in the darkroom 1, and the laser 4 is used to emit a laser beam to excite the battery to be tested 10 to generate a specific optical response; the adjustable constant current source 5 and the electronic load 6 module are located outside the darkroom 1 and can be electrically connected with the battery to be tested 10 on the test platform 2, the adjustable constant current source 5 is used to supply current to the battery to be tested 10, and the electronic load 6 module is used to simulate different load conditions to test the electrical performance of the battery to be tested 10 under different loads; the upper computer 7 is used to realize intelligent control of the test process and processing and display of test data.

[0043] Further referring to Figure 2 As shown, preferably, the LED light source module comprises a first LED light source 11, a second LED light source 12 and a third LED light source 13; the light emitted by the first LED light source 11 and the second LED light source 12 is uniformly lighted through the compound eye lens 8 and then collimated through the collimating lens 9, and then irradiated to the test platform 2 from the front; the light emitted by the third LED light source 13 is irradiated to the test platform 2 from the side; the spectral range of the first LED light source 11 covers 300-1200 nm, which can simulate different light intensities and spectral distributions, and in general cases, the first LED light source 11 is used alone to realize IV and QE tests of the battery to be tested 10; the second LED light source 12 and the third LED light source 13 are used together to realize light bath and light aging tests, and the overall irradiation range of the second LED light source 12 and the third LED light source 13 is 0.5-10 times the standard light intensity.

[0044] Preferably, the number of the CCD cameras 3 is two, and the two CCD cameras 3 are matched with different filters and are used to capture optical signals of different wave bands respectively. Through imaging and analysis of these optical signals, information such as light-emitting characteristics, defect distribution and carrier recombination in the battery can be obtained, so as to evaluate the optical performance of the battery.

[0045] The laser 4 as a specific excitation light source can emit laser beams of specific wavelengths and energies to excite the perovskite and stacked cells to generate specific optical responses, thereby providing conditions for in-depth study of the optical and electrical properties of the cells. Preferably, the laser 4 outputs laser beams with wavelengths of 450 nm and 808 nm through two output lenses 14, respectively, for exciting the perovskite layer and the crystalline silicon layer, and the PL images of different layers can be observed.

[0046] In addition, the adjustable constant current source 5 plays a key role in the EL test link. Its working principle is to supply current to the perovskite and stacked cells to make the cells emit fluorescence, thereby realizing EL testing. The adjustable constant current source 5 can output high-precision and stable current for the system. Moreover, it can accurately adjust the current size according to diversified testing requirements, fully meet the stringent requirements for battery power supply under different testing conditions, and effectively ensure that the battery maintains a stable working state throughout the testing process.

[0047] The electronic load 6 is used to simulate different load conditions. By changing the load resistance and other parameters, the electrical properties of the perovskite and stacked cells under different loads, such as current and voltage characteristics, can be tested, thereby comprehensively evaluating the output capacity and stability of the cells. Specifically, it can be used for IV curve testing, aging testing, QE testing, etc.

[0048] In addition, the test platform 2 is a carrier for placing the battery 10 to be tested and has adjustable test probes for connecting the positive and negative electrodes of the battery 10 to be tested. It also has certain mechanical stability and precise positioning function to ensure that the battery 10 to be tested is fixed in position during testing and maintains good connection and coupling with each testing device.

[0049] The test platform 2 is placed in the darkroom 1, which can effectively shield the interference of external environmental light, ensuring the accuracy and reliability of the optical test data.

[0050] The host computer 7 is the control core of the entire testing system, which can uniformly control and coordinate each module through specific software programs. It can accurately control the intensity and wavelength of the light source, the output current of the power supply, the parameters of the electronic load, etc., while simultaneously collecting and processing testing data from the CCD camera, IV testing device, etc. in real time, performing data analysis, storage and display, and finally generating a comprehensive test report to provide strong support for performance evaluation and research of the perovskite and stacked cells. Through the intelligent control and data processing functions of the host computer 7, automation of the testing process and efficiency of data management can be realized, greatly improving the testing efficiency and data usability.

[0051] Another aspect of the present application provides a multi-modal perovskite and stacked cell comprehensive testing method, which uses the multi-modal perovskite and stacked cell comprehensive testing system described above and includes the following steps:

[0052] S1, place the battery to be tested 10 on the test platform 2 and connect the relevant equipment;

[0053] S2, perform an IV test.

[0054] Specifically, when performing the IV test, the first LED light source 11 of the LED light source module outputs simulated sunlight, such as a 3A+ level light source (1000W / m2standard light intensity), the second LED light source 12 and the third LED light source 13 do not work, the output current under different voltages is measured by adjusting the electronic load 6 module, the host computer 7 synchronously collects data, and the current-voltage curve is drawn according to the collected data, thereby completing the IV test and obtaining the open-circuit voltage, short-circuit current and other electrical performance parameters of the battery.

[0055] S3, perform a QE test.

[0056] Specifically, when performing the QE test, the host computer 7 controls the first LED light source 11 to output light of different wavelengths, while measuring the photogenerated current generated by the battery to be tested 10 under irradiation of light of corresponding wavelengths, calculating the ratio of the photogenerated current to the number of incident photons, obtaining the quantum efficiency under different wavelengths, and turning off the first LED light source 11 after completing the test.

[0057] S4, perform an EL test.

[0058] Specifically, when performing the EL test, the adjustable constant current source 5 supplies current to the battery to be tested 10, and the fluorescent light generated by the recombination of carriers in the battery is captured by the CCD camera 3, and the signal is transmitted to the host computer 7 for analysis, obtaining the light-emitting characteristics, defect distribution and other information of the battery, completing the EL test, and disconnecting the adjustable constant current source 5 after completing the test.

[0059] S5, perform a PL test.

[0060] Specifically, when performing the PL test, the laser 4 emits a laser beam of a specific wavelength (such as 450nm and 808nm) and energy to irradiate the battery to be tested 10, so that the electrons in the battery to be tested 10 are excited to transition, and photoluminescence is generated. The CCD camera 3 captures the photoluminescence signal, and transmits the signal to the host computer 7 for analysis, obtaining the light-emitting efficiency, bandgap structure and other optical property information of the battery material, completing the PL test, and turning off the laser 4 after completing the test.

[0061] S6, end the test and output the test report.

[0062] It can be understood that the above gives a combined test procedure in a specific embodiment, which tests various performances of the battery 10 to be tested in a certain order through programming test logic; in addition, each test function can also be applied flexibly alone to complete different types of tests as needed. This flexible test method can meet the needs of different users and different test scenarios, whether it is in-depth research on a single performance or comprehensive performance evaluation of the battery, it can be completed efficiently.

[0063] In another embodiment, if the battery 10 to be tested is to be subjected to long-term aging test, then:

[0064] In step S5, after the PL test, the current total test number is recorded plus 1, and it is judged whether the current total test number reaches a preset value (such as 2000 times). If it reaches, it enters step S6, and if it does not reach, it enters step S5'.

[0065] S5', light aging treatment for a preset time is performed, and then it returns to step S2.

[0066] Specifically, when performing light aging treatment, the first LED light source 11 of the LED light source module does not work, the second LED light source 12 serves as the main light source, and the third LED light source 13 serves as the auxiliary light source. According to the preset light aging treatment intensity and time, the treatment is completed. During the treatment process, when the irradiance output is less than 5 times the standard light intensity, only the second LED light source 12 is turned on, and when the irradiance output is not less than 5 times the standard light intensity, the second LED light source 12 and the third LED light source 13 are turned on at the same time. For example, the preset time of light aging treatment can be 1 hour, and the light intensity can be 1 times the standard light intensity, at which time only the second LED light source 12 needs to be turned on.

[0067] In this way, long-term aging test of the battery 10 to be tested is realized, which is beneficial to analyze the long-term working performance of multi-modal perovskite and stacked batteries and predict possible defects and hidden dangers of the battery in long-term work.

[0068] In addition, during the test process, the accuracy of the electronic load 6 is very important, otherwise the measurement result is prone to deviation. In one specific embodiment, the present application also realizes self-calibration of the electronic load 6 through the following method:

[0069] When the device is powered on and every preset time (such as 1 hour), the electronic load 6 automatically switches to the self-calibration mode, and automatically switches back to the working mode after the calibration is completed. In the working mode, the electronic load 5 is electrically connected with the battery 10 to be tested to obtain the electrical signal output by the battery 10 to be tested, so as to realize the electrical performance test of the battery 10 to be tested; in the self-calibration mode, the electronic load 5 is connected with the reference source. The reference source can be a precision device that has been strictly measured by the metrology institute to ensure its accuracy, and is used to generate high-precision and stable current and voltage reference signals to provide a standard reference for current and voltage measurement, and to ensure the accuracy and reliability of the measurement results.

[0070] In the self-calibration mode, the deviations of the current and the voltage are calculated according to the calculation formula X = (Tn-Bn) / (Tn+Bn)*100%, wherein Tn is the measurement value of the acquisition unit of the electronic load 5, Bn is the reference signal standard value of the reference source 5, and X represents the deviation value. Then, the deviation values of the current and the voltage are compared with the preset threshold value, if the deviation values of the current and the voltage are both not greater than the preset threshold value (such as 0.01%), no processing is performed, the self-calibration mode is ended, otherwise the calibration process is entered.

[0071] After the calibration process is started, the principle of voltage calibration is as follows:

[0072] The range of the voltage value acquired by the acquisition unit of the electronic load 5 is represented as Vmin~Vmax, and then the standard values Vref1, Vref2 and Vref3 of the three calibration points are selected by the following formula:

[0073] Vref1 = Vmin + 1 / 8(Vmax-Vmin);

[0074] Vref2 = Vmin + 1 / 2(Vmax-Vmin);

[0075] Vref3 = Vmin + 7 / 8(Vmax-Vmin);

[0076] The reference source inputs the three standard values into the acquisition unit in turn, and records the measurement values Vmeas1, Vmeas2 and Vmeas3 of the acquisition unit under each standard value. The 1 / 8, 1 / 2 and 7 / 8 in the range are used to select three different standard values, which can more comprehensively cover the range of the acquisition system, so as to more accurately calibrate the acquisition system;

[0077] For convenience of representation, the three measurement values Vmeas1, Vmeas2 and Vmeas3 are represented as x1, x2 and x3 respectively, and the three standard values Vref1, Vref2 and Vref3 are the corresponding target values after calibration, which are represented as y1, y2 and y3 respectively;

[0078] The calibration model is represented by a linear function y=ax+b, wherein y represents the calibrated value, x represents the measurement value of the acquisition unit before calibration, a and b are coefficients to be solved, a and b are solved according to the least square method, and specifically:

[0079] Let

[0080] Then the equation group is:

[0081] aX1+bX2=Y1;

[0082] aX2+3b=Y2;

[0083] Therefore, a and b can be solved as:

[0084]

[0085] According to the solved coefficients a and b, the measurement value of the acquisition system is corrected to the y value calculated after y=ax+b, that is, a linear calibration process is completed.

[0086] It can be understood that the principle of current calibration is similar to that of voltage calibration, which will not be repeated here.

[0087] After completing a calibration process, the deviation value is recalculated and compared with the preset threshold, and if it still does not meet the requirements, it will enter the calibration process again, and the cycle will continue until the deviation values of the current and voltage are both not greater than the preset threshold (such as 0.01%), and the calibration is completed, and the self-calibration mode is ended. In addition, if the number of times of executing the calibration process reaches the preset value (such as 5 times), the calibration is still not completed, and an alarm is triggered to prompt the staff to handle.

[0088] Through the above method, the current and voltage acquisition deviation of the electronic load 5 can be always less than 0.01%, which significantly improves the accuracy and reliability of the test.

[0089] The test system provided by the application can be integrated into the intelligent overall framework of the whole production detection of photovoltaic modules. Various defects of perovskite batteries in the production stage can be accurately identified. With the help of advanced algorithms and a large amount of experimental data accumulation, the types and positions of possible defects in subsequent processes can be predicted in advance. Through this forward-looking defect prediction, production enterprises can adjust production strategies in time before defects occur, thereby effectively improving the overall yield rate of perovskite battery production process.

[0090] In conclusion, the multimodal perovskite and laminated battery comprehensive test system and method provided by the application combines IV, EL, PL, QE and other test technologies, realizes multimodal comprehensive testing, can analyze the perovskite battery from multiple dimensions, and obtain richer and more accurate performance data, which has important significance for promoting the research and industrialization development of the perovskite battery, and solves the deficiencies of the existing test technology.

[0091] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the present application, and they should be covered in the scope of the claims of the present application.

Claims

1. A multi-modal perovskite and tandem battery integrated test system, characterized in that, It comprises a darkroom (1), a test platform (2), an LED light source module, a CCD camera (3), a laser (4), an adjustable constant current source (5), an electronic load (6) and an upper computer (7); The darkroom (1) is used for shielding external ambient light and providing a dark test environment; The test platform (2) is installed in the darkroom (1), and the test platform (2) is used for placing a battery to be tested (10), and the test platform (2) has test probes for connecting the battery to be tested (10); The LED light source module is installed in the darkroom (1) and used for providing a test light source; The CCD camera (3) is installed in the darkroom (1) and used for capturing optical signals generated by the battery to be tested (10) during the test; The output lens (14) of the laser (4) is installed in the darkroom (1), and the laser (4) is used for emitting a laser beam to excite the battery to be tested (10) to generate a specific optical response; The adjustable constant current source (5) and the electronic load (6) are located outside the darkroom (1) and can be electrically connected to the battery to be tested (10) on the test platform (2), the adjustable constant current source (5) is used for supplying current to the battery to be tested (10), and the electronic load (6) is used for simulating different load conditions to test the electrical performance of the battery to be tested (10) under different loads; The upper computer (7) is used for intelligent control of the test process and processing and display of test data; The LED light source module comprises a first LED light source (11), a second LED light source (12) and a third LED light source (13); The light emitted by the first LED light source (11) and the second LED light source (12) is uniformly lighted through the compound eye lens (8) and then collimated through the collimating lens (9) and irradiated to the test platform (2) from the front; The light emitted by the third LED light source (13) is irradiated to the test platform (2) from the side; The spectral range of the first LED light source (11) covers 300-1200nm, which can simulate different light intensities and spectral distributions and is used for IV and QE tests of the battery to be tested (10); The second LED light source (12) and the third LED light source (13) are used together for light bath and light aging tests, and the overall irradiation range of the second LED light source (12) and the third LED light source (13) is 0.5-10 times the standard light intensity.

2. The multimodal perovskite and tandem battery comprehensive test system of claim 1, wherein, The number of the CCD cameras (3) is two, and the two CCD cameras (3) are matched with different filters and are used for capturing optical signals of different wavebands.

3. The multimodal perovskite and tandem battery comprehensive test system of claim 2, wherein, The laser (4) outputs laser beams with wavelengths of 450nm and 808nm through two output lenses (14) respectively and is used for exciting perovskite layers and crystalline silicon layers respectively.

4. A multi-modal perovskite and tandem battery comprehensive testing method, characterized in that, The multi-modal perovskite and laminated battery comprehensive test system of claim 3 comprises the following steps: S1, placing the battery to be tested (10) on the test platform (2) and connecting the related equipment; S2, perform an IV test, when performing the IV test, the first LED light source (11) of the LED light source module outputs simulated sunlight, the second LED light source (12) and the third LED light source (13) do not work, the output current under different voltages is measured by adjusting the electronic load (6) module, the host computer (7) synchronously collects data, and the current-voltage curve is drawn according to the collected data, so that the IV test is completed; S3, perform a QE test, when performing the QE test, the host computer (7) controls the first LED light source (11) to output light of different wavelengths, and simultaneously measures the photogenerated current generated by the battery (10) under irradiation of corresponding wavelength light, and calculates the ratio of the photogenerated current to the number of incident photons to obtain the quantum efficiency under different wavelengths, and the first LED light source (11) is turned off after the test is completed; S4, perform an EL test, when performing the EL test, the adjustable constant current source (5) supplies current to the battery (10), the carrier recombination in the battery generates fluorescence, the CCD camera (3) captures the fluorescence signal emitted by the battery (10) and transmits the signal to the host computer (7) for analysis, the EL test is completed, and the adjustable constant current source (5) is disconnected after the test is completed; S5, perform a PL test, when performing the PL test, the laser (4) emits a laser beam of a specific wavelength and energy to irradiate the battery (10), so that the electrons in the battery (10) are excited to transition, and photoluminescence is generated, the CCD camera (3) captures the photoluminescence signal and transmits the signal to the host computer (7) for analysis, the PL test is completed, and the laser (4) is turned off after the test is completed; S6, end the test and output a test report.

5. The multi-modal perovskite and tandem cell integrated testing method of claim 4, wherein, If the battery (10) is to be tested for a long time, then: In step S5, after the PL test is performed, the current total test number is recorded and increased by 1, and it is judged whether the current total test number reaches a preset value, if yes, step S6 is entered, and if no, step S5' is entered; S5', perform light aging treatment for a preset time, and then return to step S2; In step S5', when the light aging treatment is performed, the first LED light source (11) of the LED light source module does not work, the second LED light source (12) serves as a main light source, and the third LED light source (13) serves as an auxiliary light source, the treatment is completed according to a preset light aging treatment intensity and time, and during the treatment process, only the second LED light source (12) is turned on when the irradiance output is less than 5 times the standard light intensity, and the second LED light source (12) and the third LED light source (13) are turned on at the same time when the irradiance output is not less than 5 times the standard light intensity.

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