Outdoor photoelectronic imaging tester for thin-film battery and working method of outdoor photoelectronic imaging tester

Abstract

The invention discloses an outdoor photoelectric imaging tester for a thin film battery and a working method of the outdoor photoelectric imaging tester, and belongs to the technical field of photovoltaic module tests.The tester comprises a frame fixing and sealing shading cover plate assembly, a laser unit and a comprehensive control upper computer, and the laser unit comprises a linear laser set, a brushless motor set and a laser power source; the brushless motor set can drive the linear laser set to move along the upper frame fixed closed shading cover plate based on an instruction of the comprehensive control upper computer, a laser beam emitted by the linear laser scans the thin film battery to be measured to obtain displacement data, and the comprehensive control upper computer processes the displacement data and photoelectric data to form an image. And judging the attenuation condition of the to-be-detected thin film battery. According to the invention, the photoelectric imaging test of the on-site battery can be conveniently carried out, so that the attenuation or fault condition of the photovoltaic module can be checked. In addition, photoelectric imaging testing can be carried out on the battery, a large amount of long-time testing operation can be carried out conveniently, and then attenuation changes of the battery can be tracked reliably.

Description

Technical Field

[0001] The present invention belongs to the technical field of photovoltaic module testing, and particularly relates to an outdoor optoelectronic imaging tester for thin-film batteries and its working method. Background Art

[0002] In the photovoltaic field, the outdoor attenuation test of thin-film photovoltaic modules is to evaluate the performance and lifespan of the modules under actual use environments, which is crucial for ensuring the long-term stable operation of photovoltaic systems. The outdoor attenuation test of thin-film photovoltaic modules is of great significance for ensuring the long-term effective operation of photovoltaic systems, improving the return on investment, adapting to different environmental conditions, and promoting the development and application of photovoltaic technologies.

[0003] At present, the main means for the outdoor attenuation test of thin-film photovoltaic modules include the following two. One is infrared thermal imaging detection: using an infrared thermal imager or a thermal imaging drone to detect photovoltaic modules. This is a fast and reliable solar panel inspection tool that can help photovoltaic power stations solve fault problems and comprehensively and simply monitor the system status. The other is I-V curve testing: under outdoor conditions, using a portable I-V tester to test photovoltaic modules to evaluate their maximum power output and performance attenuation. However, the above two commonly used means for the outdoor attenuation test of thin-film photovoltaic modules are not detailed enough for studying the attenuation situation and attenuation changes of specific modules, and cannot more finely and comprehensively study the attenuation situation between sub-cells or within sub-cells of thin-film battery modules. Summary of the Invention

[0004] The present invention provides an outdoor optoelectronic imaging tester for thin-film batteries and its working method, aiming to solve the problem that the current means for the outdoor attenuation test of thin-film photovoltaic modules are not detailed enough for studying the attenuation situation and attenuation changes of specific modules, and cannot finely and comprehensively study the attenuation situation of sub-cells or between sub-cells of thin-film battery modules.

[0005] To achieve the above object, the present invention adopts the following technical solutions: The present invention provides an outdoor optoelectronic imaging tester for thin-film batteries, including a frame-fixed airtight light-shielding cover plate assembly and a laser unit and an integrated control host computer configured thereon. The frame-fixed airtight light-shielding cover plate assembly can accommodate the thin-film battery component to be tested and form an airtight light-shielding cavity, wherein: The frame-fixed airtight light-shielding cover plate assembly includes an upper frame-fixed airtight light-shielding cover plate and a lower frame-fixed airtight light-shielding cover plate; The laser unit includes a linear laser group, a brushless motor group, and a laser power supply installed on the upper frame-fixed airtight light-shielding cover plate. The linear laser group is movably arranged on the upper frame-fixed airtight light-shielding cover plate; The brushless motor set can drive the linear laser set to displace along the upper frame-fixed airtight light-shielding cover plate based on the instructions of the integrated control host computer. The laser beam emitted by the linear laser scans the thin-film battery to be tested, and uploads the scanned displacement data to the integrated control host computer. The integrated control host computer combines the displacement data with the optoelectronic data to process and form an image, and then judges the attenuation condition of the thin-film battery to be tested.

[0006] In some embodiments, the linear laser set includes a first linear laser and a second linear laser. The upper frame-fixed airtight light-shielding cover plate is respectively provided with a first slide rail and a second slide rail corresponding to the first linear laser and the second linear laser.

[0007] Further, correspondingly, the brushless motor set is provided with a first brushless DC motor and a second brushless DC motor. The first brushless DC motor and the second brushless DC motor are respectively electrically connected to the first linear laser and the second linear laser.

[0008] Further, the first brushless DC motor, the second brushless DC motor and the laser power supply are integrated on the end face of the upper frame-fixed airtight light-shielding cover plate away from the lower frame-fixed airtight light-shielding cover plate.

[0009] In some embodiments, the upper frame-fixed airtight light-shielding cover plate and the lower frame-fixed airtight light-shielding cover plate are detachably connected and made of light-impermeable materials.

[0010] In some embodiments, the laser band of the linear laser set is set according to the external quantum efficiency of the thin-film battery to be tested.

[0011] In some embodiments, the movement speed of the brushless motor set and the data acquisition time interval can be preset and adjusted corresponding to the movement speed of the brushless DC motor set.

[0012] In some embodiments, the integrated control host computer is configured with a sensor set for collecting optoelectronic data. The integrated control host computer can combine the optoelectronic data with the displacement information to generate a color-graded optoelectronic imaging map.

[0013] Further, the integrated control host computer can perform superposition processing on the imaging data of the thin-film battery to be tested in different directions.

[0014] The present invention also provides a working method for an outdoor optoelectronic imaging tester for thin-film batteries, including the following steps: S1. Place the thin-film battery to be tested in the frame-fixed airtight light-shielding cover plate assembly; S2. Through the instructions of the integrated control host computer, the brushless motor set drives the linear laser set to move along the upper frame-fixed airtight light-shielding cover plate. The laser beam emitted by the linear laser set scans the thin-film battery to be tested. S3. The linear laser group uploads the scanned displacement data to the comprehensive control host computer, and the comprehensive control host computer simultaneously collects the optoelectronic data of the thin-film battery to be measured; S4. The comprehensive control host computer combines the displacement data and the optoelectronic data to process and form an image, and judges the attenuation condition of the thin-film battery to be measured according to the image.

[0015] Compared with the prior art, the outdoor optoelectronic imaging tester for thin-film batteries and its working method of the present invention have the following beneficial effects: The outdoor optoelectronic imaging tester for thin-film batteries of the present invention includes a frame-fixed airtight light-shielding cover plate assembly and a laser unit and a comprehensive control host computer configured therein. The frame-fixed airtight light-shielding cover plate assembly can accommodate the thin-film battery component to be measured and form an airtight light-shielding cavity. Among them: the frame-fixed airtight light-shielding cover plate assembly includes an upper frame-fixed airtight light-shielding cover plate and a lower frame-fixed airtight light-shielding cover plate; the laser unit includes a linear laser group, a brushless motor group and a laser power supply installed on the upper frame-fixed airtight light-shielding cover plate. The linear laser group is movably arranged on the upper frame-fixed airtight light-shielding cover plate; the brushless motor group can drive the linear laser group to displace along the upper frame-fixed airtight light-shielding cover plate based on the instruction of the comprehensive control host computer. The laser beam emitted by the linear laser scans the thin-film battery to be measured and uploads the scanned displacement data to the comprehensive control host computer. The comprehensive control host computer combines the displacement data and the optoelectronic data to process and form an image, and then judges the attenuation condition of the thin-film battery to be measured. The outdoor imaging tester for thin-film batteries of the present invention can be conveniently installed in an actual outdoor power station for optoelectronic imaging tests, that is, the measurement and acquisition of the photocurrent and voltage of the photovoltaic module and imaging can be carried out on-site at the power station. The airtight light-shielding cavity effectively isolates the interference of outdoor ambient light, ensures the accuracy of test data, and improves the test efficiency through the automatic scanning of the laser driven by the brushless motor. The comprehensive control host computer generates an image by collecting the optoelectronic data and the displacement data to analyze the attenuation condition of the battery and visually present the defect distribution.

[0016] The present invention can relatively conveniently carry out on-site optoelectronic imaging tests of photovoltaic modules, check the attenuation or failure conditions of photovoltaic modules, and can also carry out regular optoelectronic imaging tests of photovoltaic modules to judge the full attenuation change and attenuation curve of photovoltaic modules. Moreover, it does not need to consider the weather conditions of the power station. Compared with disassembling the module and transporting it to the laboratory for testing, the present invention is more efficient and convenient, is convenient for carrying out a large number of long-term tests, and can timely and reliably track the attenuation change of photovoltaic modules, having certain practical significance. Description of the Drawings

[0017] The accompanying drawings in the specification are used to provide a further understanding of the present invention, and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention.

[0018] Figure 1 This is a schematic structural diagram of an outdoor optoelectronic imaging tester for thin-film batteries according to the present invention; Figure 2 This is a partial schematic diagram of the upper frame fixed airtight light-shielding cover plate of the outdoor optoelectronic imaging tester for thin-film batteries according to the present invention.

[0019] Among them, 11 is the upper frame fixed airtight light-shielding cover plate, 12 is the lower frame fixed airtight light-shielding cover plate, 13 is the integrated control upper computer, 14 is the first brushless DC motor, 15 is the laser power supply, and 16 is the second brushless DC motor; 21 is the first linear laser, 22 is the second linear laser, 23 is the first slide rail, and 24 is the second slide rail. Specific embodiments

[0020] In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated herein can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0022] It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0023] In the description of the embodiments of the present invention, it should be noted that if terms such as "upper", "lower", "horizontal", "inner", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invention product is usually placed during use, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, terms such as "first" and "second" are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0024] In addition, when the term "horizontal" appears, it does not mean that the component is required to be absolutely horizontal, but it can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and it does not mean that the structure must be completely horizontal, but it can be slightly inclined.

[0025] In the description of the embodiments of the present invention, it should also be noted that unless otherwise clearly specified and limited, when the terms "set", "installed", "connected", and "connected" appear, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] How to provide a test device for photovoltaic modules that can perform tests more efficiently and conveniently, and the device is convenient for a large number of long-term tests to timely and reliably track the attenuation changes of photovoltaic modules.

[0027] As Figure 1 and Figure 2 As shown, an outdoor optoelectronic imaging tester for thin-film batteries of the present invention includes a frame-fixed airtight light-shielding cover plate assembly and a laser unit and a comprehensive control upper computer 13 configured therein. The frame-fixed airtight light-shielding cover plate assembly can accommodate the thin-film battery to be tested and form an airtight light-shielding cavity, wherein: The frame-fixed airtight light-shielding cover plate assembly includes an upper frame-fixed airtight light-shielding cover plate 11 and a lower frame-fixed airtight light-shielding cover plate 12; The laser unit includes a linear laser group, a brushless motor group, and a laser power supply 15 installed on the upper frame-fixed airtight light-shielding cover plate 11. The linear laser group is movably arranged on the upper frame-fixed airtight light-shielding cover plate 11; The brushless motor group can drive the linear laser group to displace along the upper frame-fixed airtight light-shielding cover plate 11 based on the instructions of the comprehensive control upper computer 13. The laser beam emitted by the linear laser scans the thin-film battery to be tested, and uploads the scanned displacement data to the comprehensive control upper computer 13. The comprehensive control upper computer 13 combines the displacement data with the optoelectronic data to process and form an image, and then judges the attenuation situation of the thin-film battery to be tested.

[0028] The outdoor optoelectronic imaging tester for thin-film batteries of the present invention can conveniently perform on-site optoelectronic imaging tests in outdoor photovoltaic power stations, and is used to test the attenuation conditions between sub-cells inside the components. The present invention can perform optoelectronic imaging of specified components on-site in a photovoltaic power station, avoiding the steps of disassembling and transporting the components to a laboratory for testing, saving time and labor costs, and bringing great convenience to the testing. At the same time, by performing optoelectronic imaging perpendicular and parallel to the tested components, it is convenient to more accurately determine the attenuation area. The present invention is also convenient for regularly testing specified components to track the changes in the attenuation area, and then conduct analysis and research, with better applicability.

[0029] In some embodiments, the frame-fixed airtight light-shielding cover plate assembly described in the present invention can be fixed to the frame of the thin-film battery to be tested from the front and back, and the frame-fixed airtight light-shielding cover plate assembly is made of a black light-impermeable material. The light-impermeable material can ensure that there is no stray light in the airtight light-shielding cavity, guaranteeing the test accuracy. The frame-fixed airtight light-shielding cover plate assembly is fixed to the frame of the thin-film battery to be tested by means of a sealing rubber ring and screws.

[0030] The first linear laser 21 and the second linear laser 21 integrated on the upper frame-fixed airtight light-shielding cover plate 11 of the present invention are installed perpendicular to each other, and can perform horizontal and vertical light scanning on the thin-film battery to be tested. The laser wavelength band is set according to the external quantum efficiency (EQE) of the thin-film battery to be tested. The present invention optimizes the laser wavelength to match the battery response characteristics, improves the defect detection sensitivity, avoids the waste of energy in the ineffective wavelength band, and prolongs the service life of the laser. In addition, when facing perovskite batteries, the present invention can select laser light in the wavelength band from visible light to near-infrared light, with relatively flexible settings to improve the applicability.

[0031] The laser beams emitted by the first linear laser 21 and the second linear laser 21 of the present invention can be very narrow, such as a line width range of 50 nm, which is convenient for observing the imaging of the dead zone and its vicinity of the thin-film component when performing laser scanning on the thin-film battery to be tested. The first linear laser 21 and the second linear laser 21 are configured with a laser power supply and independent first and second slide rails 23 and 24. The first and second brushless DC motors 14 and 16 control the first linear laser 21 and the second linear laser 21 to slide on the first and second slide rails 23 and 24, driving the displacement of the laser beams they emit. The present invention uses two lasers to scan synchronously or alternately, improving the detection area and efficiency, and reducing the risk of mechanical failure through independent movement positions.

[0032] The first brushless DC motor 14 and the second brushless DC motor 16 of the present invention can drive two sets of linear lasers of the first linear laser 21 and the second linear laser 21 to perform smooth linear motion. The comprehensive control host computer 13 can collect photocurrent and photovoltage data through sensors, and the acquisition interval can be set by itself. At the same time, the displacement information of the linear lasers of the first linear laser 21 and the second linear laser 21 can be obtained through the first brushless DC motor 14 and the second brushless DC motor 16. Finally, the photocurrent and photovoltage data and displacement information are processed to form an image represented by color gradation of strength, so as to judge the attenuation condition of the component. The image represented by color gradation of strength can directly display the attenuation degree gradient to improve the defect location accuracy. The present invention takes a relatively short time from scanning to generating a diagnostic report, and is relatively suitable for outdoor real-time test requirements.

[0033] The present invention also provides a working method for an outdoor optoelectronic imaging tester for thin-film batteries, including the following steps: S1. Place the thin-film battery to be tested in a frame-fixed airtight light-shielding cover assembly; S2. Through the instruction of the comprehensive control host computer 13, the brushless motor group drives the linear laser group to move along the upper frame-fixed airtight light-shielding cover 11, and the laser beam emitted by the linear laser group scans the thin-film battery to be tested. S3. The linear laser group uploads the scanned displacement data to the comprehensive control host computer, and the comprehensive control host computer 13 simultaneously collects the optoelectronic data of the thin-film battery to be tested; S4. The comprehensive control host computer 13 combines the displacement data and the optoelectronic data to process and form an image, and judges the attenuation condition of the thin-film battery to be tested according to the image.

[0034] The following further details the working method of an outdoor optoelectronic imaging tester for thin-film batteries of the present invention through specific embodiments.

[0035] Strip the positive and negative electrodes of the component to be tested from the component string and connect them to the voltage and current signal receiving ends of the outdoor optoelectronic imaging tester of the present invention. Assemble the upper frame-fixed airtight light-shielding cover 11 and the lower frame-fixed airtight light-shielding cover 12, so that the inside of the frame-fixed airtight light-shielding cover assembly is an airtight light-shielding environment.

[0036] Perform linear laser scanning in the direction parallel to the sub-cells of the thin-film battery. A series of voltage values can be obtained on the comprehensive control host computer 13 by collecting voltage signals through a set sensor (not shown in the figure). Each voltage value corresponds to the position where the linear laser beam is displaced to the corresponding sub-cell of the thin-film battery, and the open-circuit voltage value excited by the battery at this place excited by the illumination of the linear laser beam. The voltage imaging of the entire open circuit of the thin-film battery component can be obtained from this set of voltage values.

[0037] Based on the voltage imaging described above, local high-resolution voltage imaging can be performed on the area with abnormal voltage values by adjusting the displacement speed of the linear laser group and the data acquisition time interval of the sensor.

[0038] Perform linear laser scanning parallel to the direction of the thin-film battery sub-cell. A series of current values can be obtained on the integrated control host computer 13 by collecting current signals. Each current value corresponds to the position of the battery in the component where the linear laser beam is displaced. The short-circuit current value excited by the laser beam illumination at that point of the battery can be obtained. The current imaging of the entire short circuit of the thin-film battery module can be obtained from this set of current values.

[0039] Based on the current imaging obtained as above, local high-resolution current imaging can be performed on the area with abnormal current values by adjusting the displacement speed of the linear laser group and the sensor data acquisition interval.

[0040] Perform linear laser scanning perpendicular to the direction of the thin-film battery sub-cell. A series of voltage values or currents can be obtained on the integrated control host computer 13 by collecting voltage or current signals through the sensor. Each voltage value or current corresponds to the position of the battery in the component where the linear laser is displaced. The open-circuit voltage value or short-circuit current value excited by the laser beam illumination at that point of the battery can be obtained. The entire open-circuit voltage imaging or short-circuit current imaging perpendicular to the direction of the thin-film battery module sub-cell can be achieved from this set of voltage values or current values.

[0041] As a preference, the current or voltage imaging perpendicular to the direction of the sub-cell can be superimposed with the current or voltage value imaging parallel to the direction of the sub-cell to more accurately determine the attenuation area. At the same time, the photoelectric imaging test of the component to be measured can be performed every once in a while to track the change of the area and degree of the attenuation area for analysis and research.

[0042] In summary, an outdoor photoelectric imaging tester for thin-film batteries and its working method according to the present invention can achieve accurate attenuation analysis of thin-film batteries in a complex illumination environment through sealed light shielding, laser parameter optimization and intelligent algorithms. The present invention adopts automatic scanning and rapid diagnosis, and the dual-laser design improves the detection efficiency and is suitable for large-scale inspections of photovoltaic power stations. The present invention can adjust the laser band and motor speed and supports adaptation to different battery types. Through data collection and processing, a color-scale image and multi-directional superposition are formed for the life prediction of the battery, and the predicted results are relatively accurate and reliable.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and does not impose any formal restrictions on the present invention. Any ordinary technical personnel in the industry can smoothly implement the present invention according to the description in the specification and the above. Slight changes, modifications, and equivalent variations made by using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications, and evolutions made to the above embodiments based on the substantial technology of the present invention still fall within the protection scope of the technical solutions of the present invention.

Claims

1. An outdoor photoelectric imaging tester for thin-film batteries, characterized in that: It comprises a frame-fixed sealed light-shielding cover assembly, a laser unit and a comprehensive control host computer (13) arranged thereon, wherein the frame-fixed sealed light-shielding cover assembly can accommodate a thin-film battery component to be tested and form a sealed light-shielding cavity, wherein: The frame-fixed sealed light-shielding cover assembly comprises an upper frame-fixed sealed light-shielding cover (11) and a lower frame-fixed sealed light-shielding cover (12); The laser unit comprises a linear laser group installed on a sealed shading cover plate (11) fixed on the upper frame, a brushless motor group and a laser power supply (15), and the linear laser group is movably arranged on the sealed shading cover plate (11) fixed on the upper frame; The brushless motor group can drive the linear laser group to move along the upper frame fixed sealed light shielding cover (11) based on the instruction of the integrated control host computer (13); the laser beam emitted by the linear laser scans the thin film battery to be tested, and the scanned displacement data is uploaded to the integrated control host computer (13); the integrated control host computer (13) combines the displacement data with photoelectric data to form an image, and then determines the attenuation of the thin film battery to be tested.

2. The outdoor photoelectric imaging tester for thin-film batteries according to claim 1, characterized in that: The linear laser group comprises a first linear laser (21) and a second linear laser (22), and the upper frame fixed sealed light shielding cover plate (11) is provided with a first slide rail (23) and a second slide rail (24) corresponding to the first linear laser (21) and the second linear laser (22), respectively.

3. The outdoor photoelectric imaging tester for thin-film batteries according to claim 2, characterized in that: Correspondingly, the brushless motor group is provided with a first brushless DC motor (14) and a second brushless DC motor (16); the first brushless DC motor (14) and the second brushless DC motor (16) are electrically connected to the first linear laser (21) and the second linear laser (22), respectively.

4. The outdoor photoelectric imaging tester for thin-film batteries according to claim 3, characterized in that: The first brushless DC motor (14), the second brushless DC motor (16) and the laser power supply (15) are integrated on the end surface of the upper frame fixed sealed light shielding cover (11) away from the lower frame fixed sealed light shielding cover (12).

5. The outdoor photoelectric imaging tester for thin-film batteries according to claim 1, characterized in that: The upper frame fixed sealed light-shielding cover plate (11) and the lower frame fixed sealed light-shielding cover plate (12) are connected in a detachable manner and are made of opaque material.

6. The outdoor photoelectric imaging tester for thin-film batteries according to claim 1, characterized in that: The laser band of the linear laser group is set according to the external quantum efficiency of the thin film battery to be tested.

7. The outdoor photoelectric imaging tester for thin-film batteries according to claim 1, characterized in that: The movement speed of the brushless motor group and the data collection time interval can be preset and adjusted corresponding to the movement speed of the brushless DC motor group.

8. The outdoor photoelectric imaging tester for thin-film batteries according to claim 1, characterized in that: The integrated control host computer (13) is equipped with a sensor group, the sensor group is used to collect photoelectric data, and the integrated control host computer (13) can combine the photoelectric data with displacement information to generate a color-scaled photoelectric imaging image.

9. The outdoor photoelectric imaging tester for thin-film batteries according to claim 8, characterized in that: The comprehensive control host computer (13) is capable of superimposing imaging data of the thin-film battery to be tested in different directions.

10. A working method of an outdoor photoelectric imaging tester for thin-film batteries according to any one of claims 1 to 9, characterized in that: The steps include: S1. Place the thin-film battery to be tested in a frame-fixed, sealed, light-shielding cover assembly; S2, through the integrated control host computer (13), instructing the brushless motor group to drive the linear laser group to move along the upper frame fixed sealed shading cover (11), and the laser beam emitted by the linear laser group scans the thin film battery to be tested, S3, the linear laser group uploads the scanned displacement data to the integrated control host computer, and the integrated control host computer (13) simultaneously collects the photoelectric data of the thin film battery to be tested; S4. The integrated control host computer (13) combines the displacement data and the photoelectric data to form an image, and determines the attenuation of the thin-film battery to be tested based on the image.

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