Ground evaluation system, method and electronic equipment for solar cell high-altitude calibration device

Abstract

The present invention discloses a system, method and electronic equipment for ground evaluation of a solar cell high-altitude calibration device, including: a pod suspension device, a fan device, a sunlight simulation device, a calibration device, a pod and a solar cell simulation device; the calibration device and the pod are connected to the pod suspension device through a cable; the pod suspension device is used to simulate the action generated when a high-altitude balloon carrying the calibration device flies; the fan device is used to generate wind fields of different speeds and directions; the sunlight simulation device is used to generate approximately parallel light to irradiate the calibration device; the calibration device is used to calibrate the solar cell; the solar cell simulation device is used to simulate the solar cell parameters output by the solar cell under different lighting conditions to evaluate the solar cell parameter measurement accuracy of the calibration device. The present invention realizes the high-altitude solar cell calibration device tracking the sun and the high-precision evaluation of the solar cell parameter measurement accuracy on the ground, which is simple and efficient.

Description

Technical Field

[0001] The invention relates to the technical field of solar cell calibration, and in particular to a ground evaluation system, method and electronic equipment for a solar cell high-altitude calibration device. Background Art

[0002] Solar cells are an important source of energy for space vehicles such as satellites and near-space vehicles such as stratospheric airships. Due to restrictions such as installation area and weight requirements, energy is very scarce. When designing an aircraft energy system, it is necessary to have an accurate understanding and measurement of the performance parameters of solar cells. Currently, the international methods for AM0 in-situ calibration of solar cells include high-altitude aircraft calibration, high-altitude balloon calibration, satellite calibration, etc. The high-altitude balloon calibration method of solar cells has broad development prospects due to its unique advantages such as rapid testing, low single calibration cost and recyclability. Among them, the high-altitude calibration system achieves stable tracking of the sun and high-precision measurement when the balloon rotates. The tracking and measuring devices need to be calibrated and evaluated before flight. So far, there is no evaluation method that can achieve tracking and high-precision measurement of the sun on the ground.

[0003] Currently, there is an urgent need for a method for ground evaluation of a solar cell high-altitude calibration device to solve the problems existing in the above-mentioned prior art. Summary of the invention

[0004] Since the existing methods have the above-mentioned problems, the present invention proposes a ground evaluation system, method and electronic equipment for a solar cell high-altitude calibration device.

[0005] In a first aspect, the present invention provides a ground evaluation system for a solar cell high-altitude calibration device, comprising: a pod suspension device, a fan device, a sunlight simulation device, a calibration device, a pod, and a solar cell simulation device;

[0006] The calibration device and the pod are connected to the pod suspension device via cables;

[0007] The pod suspension device is used to simulate the movements of a high-altitude balloon carrying the calibration device when flying;

[0008] The fan device is used to generate wind fields with different speeds and directions;

[0009] The sunlight simulation device is used to generate approximately parallel light to irradiate the calibration device;

[0010] The calibration device is used to calibrate the solar cell;

[0011] The solar cell simulation device is used to simulate the solar cell parameters output by the solar cell under different lighting conditions to evaluate the solar cell parameter measurement accuracy of the calibration device.

[0012] Further, the calibration device comprises: an angle measuring device, a calibration plate and an azimuth rotation plate;

[0013] The angle measuring device is located on the surface of the calibration plate and is used to measure the angle between the normal line of the calibration plate and the incident light;

[0014] The calibration plate rotates around the central axis so that the photoelectric sensor on the calibration plate is covered by the light generated by the sunlight simulation device;

[0015] The azimuth rotating plate is used to rotate when the calibration plate deviates from the light source so that the calibration plate is aligned with the light source.

[0016] Furthermore, the angle measurement device includes: a sun sensor, a display screen, a power supply module and a storage module;

[0017] The solar sensor is used to detect the incident angle of sunlight;

[0018] The display screen is used to display the sunlight incident angle in real time;

[0019] The power supply module is used to supply power to the angle measuring device;

[0020] The storage module is used to store the sunlight incident angle.

[0021] Furthermore, the pod suspension device comprises: a screw guide rail, a support rod, a mobile platform, a translation motor, a rotation platform, a rotation motor, a hoist and a frame;

[0022] The mobile platform is placed on the screw guide rail and the support rod;

[0023] The translation motor is used to drive the screw guide rail to rotate, thereby driving the mobile platform to perform translational motion;

[0024] The rotating motor is fixed to the rotating platform and drives the rotating platform to rotate through the rotor;

[0025] The hoist is fixedly connected to the rotating platform and is used to raise or lower the pod;

[0026] The frame is used to provide support.

[0027] In a second aspect, the present invention provides a method for ground evaluation of a solar cell high-altitude calibration device based on the first aspect, comprising:

[0028] Obtain the calibration device's solar heading accuracy, solar search efficiency, and solar tracking stabilization time;

[0029] Determining the solar tracking performance of the calibration device according to the solar orientation accuracy, the solar search efficiency, and the solar tracking stabilization time;

[0030] Acquire the first solar cell parameters collected by the calibration device and the second solar cell parameters from the solar cell simulator;

[0031] The solar cell parameter measurement performance of the calibration device is determined according to the first solar cell parameter and the second solar cell parameter.

[0032] Furthermore, the step of obtaining the solar orientation accuracy of the calibration device includes:

[0033] Turning on the calibration device and the sunlight simulation device;

[0034] When the calibration device is aimed at the light source and stops moving, the solar orientation accuracy of the calibration device is measured by an angle measuring device.

[0035] Furthermore, the step of measuring the solar orientation accuracy of the calibration device by using an angle measuring device includes:

[0036] Acquire multiple solar incident angles measured by the angle measuring device at multiple moments;

[0037] The plurality of solar incidence angles are averaged to obtain the solar orientation accuracy of the calibration device.

[0038] Furthermore, the step of obtaining the sun search efficiency of the calibration device includes:

[0039] The upper end of the cable is rotated to a preset angle by a pod suspension device;

[0040] The calibration device is started to time until the indication of the angle measuring device is less than a preset threshold value and does not change within a preset time period, then the timing is stopped to obtain the sun search efficiency of the calibration device.

[0041] Furthermore, the step of obtaining the daily tracking stability time of the calibration device includes:

[0042] The upper end of the cable moves at a preset translation speed and a preset rotation speed through a pod suspension device;

[0043] A fan device is used to generate a preset wind field;

[0044] Measuring the time interval between two times when the indication of the angle measuring device exceeds a preset threshold;

[0045] The daily tracking stabilization time is determined according to the interval time.

[0046] In a third aspect, the present invention provides a device for ground evaluation of a solar cell high-altitude calibration device, comprising:

[0047] The solar tracking module 501 is used to obtain the solar orientation accuracy, solar search efficiency and solar tracking stabilization time of the calibration device; and determine the solar tracking performance of the calibration device according to the solar orientation accuracy, the solar search efficiency and the solar tracking stabilization time;

[0048] The parameter measurement module 502 is used to obtain the first solar cell parameter collected by the calibration device and the second solar cell parameter from the solar cell simulator; and determine the solar cell parameter measurement performance of the calibration device according to the first solar cell parameter and the second solar cell parameter.

[0049] Furthermore, the daily tracking module 501 is specifically used for:

[0050] Turning on the calibration device and the sunlight simulation device;

[0051] When the calibration device is aimed at the light source and stops moving, the solar orientation accuracy of the calibration device is measured by an angle measuring device.

[0052] Furthermore, the daily tracking module 501 is specifically used for:

[0053] Acquire multiple solar incident angles measured by the angle measuring device at multiple moments;

[0054] The plurality of solar incidence angles are averaged to obtain the solar orientation accuracy of the calibration device.

[0055] Furthermore, the daily tracking module 501 is specifically used for:

[0056] The upper end of the cable is rotated to a preset angle by a pod suspension device;

[0057] The calibration device is started to time until the indication of the angle measuring device is less than a preset threshold value and does not change within a preset time period, then the timing is stopped to obtain the sun search efficiency of the calibration device.

[0058] Furthermore, the daily tracking module 501 is specifically used for:

[0059] The upper end of the cable moves at a preset translation speed and a preset rotation speed through a pod suspension device;

[0060] A fan device is used to generate a preset wind field;

[0061] Measuring the time interval between two times when the indication of the angle measuring device exceeds a preset threshold;

[0062] The daily tracking stabilization time is determined according to the interval time.

[0063] In a fourth aspect, the present invention further provides an electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the method for ground evaluation of the solar cell high-altitude calibration device as described in the second aspect is implemented.

[0064] In a fifth aspect, the present invention further provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the method for ground evaluation of a solar cell high-altitude calibration device as described in the second aspect.

[0065] It can be seen from the above technical solutions that the ground evaluation system, method and electronic equipment for the solar cell high-altitude calibration device provided by the present invention can realize high-precision evaluation of the solar cell high-altitude calibration device's sun tracking and solar cell parameter measurement accuracy on the ground, which is simple and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0067] Figure 1 A structural block diagram of the ground evaluation system of the solar cell high-altitude calibration device provided by the present invention;

[0068] Figure 2 A schematic diagram of the structure of the ground evaluation system of the solar cell high-altitude calibration device provided by the present invention;

[0069] Figure 3 A schematic diagram of the structure of the angle measuring device provided by the present invention;

[0070] Figure 4 A schematic diagram of a pod suspension device provided by the present invention;

[0071] Figure 5 A schematic diagram of the process flow of the ground evaluation method of the solar cell high-altitude calibration device provided by the present invention;

[0072] Figure 6 A schematic diagram of the structure of a device for ground evaluation of a solar cell high-altitude calibration device provided by the present invention;

[0073] Figure 7 This is a schematic structural diagram of an electronic device provided by the present invention. DETAILED DESCRIPTION

[0074] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0075] Figure 1 A schematic diagram of a ground evaluation system for a solar cell high-altitude calibration device provided by an embodiment of the present invention, the system comprising: a pod suspension device 100, a wind turbine device 200, a sunlight simulation device 300, a calibration device 400, a pod 500 and a solar cell simulation device 600;

[0076] The calibration device 400 and the pod 500 are connected to the pod suspension device 100 via cables;

[0077] The pod suspension device 100 is used to simulate the movements of a high-altitude balloon carrying a calibration device when flying.

[0078] Specifically, the calibration device and the pod are suspended on the pod suspension device through cables.

[0079] In a possible implementation, the cable is a nylon cable specially used for high-altitude balloons, and the connection with the cable on the main shaft of the pod is fixed by a high-altitude balloon release method.

[0080] In the embodiment of the present invention, the pod suspension device is used to simulate the horizontal drift, rotation and other movements generated when a high-altitude balloon carrying a solar cell high-altitude calibration device flies. The pod suspension device drives the calibration device and the pod to perform translational movement and up and down movement along its track to simulate the horizontal flight and up and down movement of the balloon in the sky.

[0081] Furthermore, the pod suspension device drives the calibration device and the pod as a whole to perform rotational motion to simulate the balloon's spin at high altitude and the rotational motion of the pod at the bottom.

[0082] It should be noted that the above-mentioned simulation motion process can be manually controlled, or the simulation process can be automatically controlled by a controller according to preset motion parameters, and the embodiment of the present invention does not specifically limit this.

[0083] The wind turbine device 200 is used to generate wind fields with different speeds and directions;

[0084] Specifically, the wind disturbance is continuously applied to the calibration device and the nacelle through the fan device to simulate the high-altitude wind field.

[0085] In the embodiment of the present invention, the fan device is used to simulate high-altitude wind field conditions and can simulate wind fields of different speeds and directions according to wind at different altitudes.

[0086] The sunlight simulation device 300 is used to generate approximately parallel light to irradiate the calibration device.

[0087] In the embodiment of the present invention, the sunlight simulation device is used to simulate the sunlight conditions in the sky, generate approximately parallel light to illuminate the surface of the calibration plate of the calibration device, and can adjust the direction and intensity of the light.

[0088] It should be noted that the lamp head of the sunlight simulation device is higher than the calibration plate of the calibration device. The spot size of the approximately parallel light generated by the sunlight simulation device completely covers the photoelectric sensor on the calibration plate. During the translation of the calibration device, the lamp head needs to be rotated accordingly so that the spot is always on the calibration plate.

[0089] Furthermore, the calibration device 400 is used to calibrate the solar cell.

[0090] The solar cell simulation device 600 is used to simulate the solar cell parameters output by the solar cell under different lighting conditions to evaluate the solar cell parameter measurement accuracy of the calibration device.

[0091] Furthermore, if Figure 2 As shown, the calibration device includes: an angle measuring device, a calibration plate and an azimuth rotation plate;

[0092] The angle measuring device is located on the surface of the calibration plate and is used to measure the angle between the normal line of the calibration plate and the incident light;

[0093] The calibration plate is rotated around the central axis so that the photoelectric sensor on the calibration plate is covered by the light generated by the sunlight simulation device;

[0094] The azimuth rotating plate is used to rotate the calibration plate when the calibration plate is away from the light source so as to align the calibration plate with the light source.

[0095] Furthermore, the calibration device also includes a conductive slip ring, which is used to prevent the wire from being twisted during rotation.

[0096] It should be noted that the ground evaluation system of the solar cell high-altitude calibration device can also include other auxiliary devices such as cameras. For example, a camera is used to record the real-time tracking situation of the high-altitude calibration device.

[0097] Further, Figure 3 The structural diagram of the angle measuring device provided by an embodiment of the present invention is exemplarily shown.

[0098] Specifically, the angle measurement device includes: a sun sensor, a display screen, a power supply module and a storage module;

[0099] The sun sensor is used to detect the incident angle of sunlight;

[0100] The display screen is used to display the incident angle of sunlight in real time;

[0101] The power supply module is used to supply power to the angle measuring device;

[0102] The storage module is used to store the sunlight incident angle.

[0103] As can be seen from the figure, the angle measurement device is an instrument installed on a calibration board to measure the angle between the normal of the calibration board and the incident light. It consists of a sun sensor, a data acquisition and processing module, a display screen, a power supply module, a communication module, and a storage module.

[0104] Furthermore, the solar sensor is used to detect the incident angle of sunlight, and transmit the measured analog signal to the data acquisition and processing module. The data acquisition and processing module obtains the corresponding incident angle of sunlight through calculation and displays it in real time on the display screen.

[0105] In a possible implementation, the entire circuit is powered by a power supply module with a 5V power input and is powered by a lithium battery.

[0106] Furthermore, the communication module and the storage module can synchronously transmit and store the current angle information as a backup means for the measurement data.

[0107] In the embodiment of the present invention, the angle measuring device is mounted on the surface of the calibration plate through the bolt holes at the four corners of its housing.

[0108] Furthermore, if Figure 4 As shown, the pod suspension device includes: a screw guide rail, a support rod, a mobile platform, a translation motor, a rotating platform, a rotating motor, a hoist and a frame;

[0109] The mobile platform is placed on the screw guide rail and the support rod;

[0110] The translation motor is used to drive the screw guide rail to rotate, thereby driving the mobile platform to perform translational motion;

[0111] The rotating motor is fixed on the rotating platform and drives the rotating platform to rotate through the rotor;

[0112] The hoist is fixedly connected to the rotating platform and is used to raise or lower the pod;

[0113] The rack is used to provide support.

[0114] It should be noted that the above scheme can also be used to perform ground evaluation on other similar high-altitude balloon-mounted pods, and the embodiments of the present invention do not specifically limit this.

[0115] The above scheme realizes the solar tracking of the solar cell high-altitude calibration device and the high-precision evaluation of the solar cell parameter measurement accuracy on the ground, which is simple and efficient.

[0116] Based on the above-mentioned solar cell high-altitude calibration device ground evaluation system, Figure 4The process of the method for ground evaluation of the solar cell high-altitude calibration device provided by the embodiment of the present invention is exemplarily shown. The process can be executed by the ground evaluation system of the solar cell high-altitude calibration device.

[0117] like Figure 5 As shown in the figure, the process specifically includes:

[0118] Step 501, obtaining the solar orientation accuracy, solar search efficiency and solar tracking stabilization time of the calibration device.

[0119] Specifically, start the calibration device and the sunlight simulation device;

[0120] When the calibration device is aimed at the light source and stops moving, the solar orientation accuracy of the calibration device is measured by the angle measuring device.

[0121] In a possible implementation, a plurality of solar incident angles measured by an angle measuring device at a plurality of moments are obtained;

[0122] In the embodiment of the present invention, the solar incident angle refers to the angle between the normal line of the solar cell calibration plate plane and the incident sunlight.

[0123] Furthermore, the multiple solar incidence angles are averaged to obtain the solar orientation accuracy of the calibration device.

[0124] For example, keep the pod suspension device in motion, the fan device without wind, and the light source emitted by the sunlight simulation device stable. When the solar cell high-altitude balloon calibration device is stably aimed at the light source and stops moving, read the solar incident angle measured by the angle measurement device every 30 seconds, for a total of 10 times. The arithmetic average of all values ​​is the solar orientation accuracy of the calibration device.

[0125] For another example, keep the pod suspension device in motion, the fan device has no wind, and the light source emitted by the sunlight simulation device is stable. When the solar cell high-altitude balloon calibration device is stably aimed at the light source and stops moving, read the solar incident angle measured by the angle measurement device once at the 10th, 30th, and 40th seconds respectively, and take the arithmetic average of all values, which is the solar orientation accuracy of the calibration device.

[0126] The above scheme measures the solar orientation accuracy of the calibration device without interference, thereby improving the accuracy and comprehensiveness of the solar tracking performance evaluation.

[0127] Further, the upper end of the cable is rotated to a preset angle by a pod suspension device;

[0128] The calibration device is started to time until the indication of the angle measuring device is less than a preset threshold value and does not change within a preset time period, then the timing is stopped to obtain the solar search efficiency of the calibration device.

[0129] For example, the control pod suspension device makes the upper end joint of the cable rotate 180° quickly and then stop, and start timing. At this time, the cable will gradually drive the calibration device and pod at the lower end to rotate, so that the calibration plate will shift the light spot and keep the light source stable. The calibration plate will search for the light source autonomously until the indication of the angle measurement device is less than the standard solar orientation accuracy and remains stable for 8 seconds, then stop timing. The total time minus the 8 seconds is the solar search efficiency.

[0130] Furthermore, the upper end of the cable is moved at a preset translation speed and a preset rotation speed by means of a pod suspension device;

[0131] A fan device is used to generate a preset wind field;

[0132] Measuring the time interval between two times when the indication of the angle measuring device exceeds a preset threshold;

[0133] The daily tracking stabilization time is determined based on the interval time.

[0134] In the embodiment of the present invention, the solar cell high-altitude balloon calibration device's sun tracking stability time refers to the ability of the calibration plate of the calibration device to continuously align with the sun under certain disturbances, such as the spherical motion simulated by the pod suspension device and the wind disturbance generated by the fan device.

[0135] For example, the translation speed of the upper end of the cable is set to 0.1m / s and the rotation speed is set to 5° / s; a fan device is used to simulate high-altitude wind field conditions, and the wind speed is set to 5m / s. Measure the interval between the indication of the angle measurement device on the calibration board exceeding the standard solar orientation accuracy twice.

[0136] In the above scheme, the interval time, i.e., the daily tracking stability time, represents the daily tracking stability. The longer the interval time, the better the daily tracking stability, and vice versa.

[0137] Step 502, determining the solar tracking performance of the calibration device according to the solar orientation accuracy, solar search efficiency and solar tracking stabilization time.

[0138] In the embodiment of the present invention, the sun orientation accuracy and the tracking accuracy of the solar cell high-altitude calibration device are investigated.

[0139] Furthermore, the solar search efficiency examines the ability of the solar cell high-altitude calibration device to quickly align with the sun at any time and any position.

[0140] It should be noted that due to the interference of random factors such as wind disturbance and sphere rotation in the high-altitude calibration device, the stable tracking may be interrupted at any time, and the solar cell calibration board may deviate from the position facing the sun to any position. At this time, the solar tracking system is required to quickly return to the position facing the sun. Therefore, the high-altitude calibration device should have a high solar search efficiency.

[0141] Furthermore, the solar tracking stability is investigated to examine the ability of the solar cell high-altitude calibration device to always keep the solar cell calibration board facing the sun under various small-amplitude disturbances.

[0142] The above scheme measures the solar orientation accuracy, solar search efficiency and solar tracking stabilization time of the calibration device respectively, thereby improving the accuracy and comprehensiveness of the solar tracking performance evaluation.

[0143] Step 503, obtaining the first solar cell parameters collected by the calibration device and the second solar cell parameters from the solar cell simulator.

[0144] In a possible implementation manner, the first solar cell parameter is collected by a solar cell parameter collection board.

[0145] It should be noted that the solar cell parameters include open circuit voltage, short circuit current, cell temperature, and may also be electrical performance parameters such as IV curve scanning, which are not specifically limited in the embodiment of the present invention.

[0146] Step 504: Determine the solar cell parameter measurement performance of the calibration device according to the first solar cell parameter and the second solar cell parameter.

[0147] In an embodiment of the present invention, the standard voltage, current, and temperature given by the solar cell simulator are compared with the voltage, current, and temperature collected by the solar cell high-altitude balloon calibration device, and the measurement accuracy of the solar cell parameters, such as the short-circuit current measurement accuracy, the open-circuit voltage measurement accuracy, and the battery temperature measurement accuracy, are calculated.

[0148] The above scheme calculates the measurement accuracy of the solar cell parameters of the calibration device according to the solar cell parameters given by the solar cell simulator, thereby improving the accuracy and efficiency of the calibration device evaluation.

[0149] Based on the same inventive concept, Figure 6 An apparatus for ground evaluation of a solar cell high-altitude calibration device provided by an embodiment of the present invention is exemplarily shown. The apparatus may be a process of a method for ground evaluation of a solar cell high-altitude calibration device.

[0150] The device comprises:

[0151] The solar tracking module 601 is used to obtain the solar orientation accuracy, solar search efficiency and solar tracking stabilization time of the calibration device; and determine the solar tracking performance of the calibration device according to the solar orientation accuracy, the solar search efficiency and the solar tracking stabilization time;

[0152] The parameter measurement module 602 is used to obtain the first solar cell parameter collected by the calibration device and the second solar cell parameter from the solar cell simulator; and determine the solar cell parameter measurement performance of the calibration device according to the first solar cell parameter and the second solar cell parameter.

[0153] Furthermore, the daily tracking module 601 is specifically used for:

[0154] Turning on the calibration device and the sunlight simulation device;

[0155] When the calibration device is aimed at the light source and stops moving, the solar orientation accuracy of the calibration device is measured by an angle measuring device.

[0156] Furthermore, the daily tracking module 601 is specifically used for:

[0157] Acquire multiple solar incident angles measured by the angle measuring device at multiple moments;

[0158] The plurality of solar incidence angles are averaged to obtain the solar orientation accuracy of the calibration device.

[0159] Furthermore, the daily tracking module 601 is specifically used for:

[0160] The upper end of the cable is rotated to a preset angle by a pod suspension device;

[0161] The calibration device is started to time until the indication of the angle measuring device is less than a preset threshold value and does not change within a preset time period, then the timing is stopped to obtain the sun search efficiency of the calibration device.

[0162] Furthermore, the daily tracking module 601 is specifically used for:

[0163] The upper end of the cable moves at a preset translation speed and a preset rotation speed through a pod suspension device;

[0164] A fan device is used to generate a preset wind field;

[0165] Measuring the time interval between two times when the indication of the angle measuring device exceeds a preset threshold;

[0166] The daily tracking stabilization time is determined according to the interval time.

[0167] Based on the same inventive concept, another embodiment of the present invention provides an electronic device, see Figure 7 , the electronic device specifically includes the following contents: a processor 701, a memory 702, a communication interface 703 and a communication bus 704;

[0168] The processor 701, the memory 702, and the communication interface 703 communicate with each other through the communication bus 704; the communication interface 703 is used to realize information transmission between various devices;

[0169] The processor 701 is used to call the computer program in the memory 702. When the processor executes the computer program, all steps of the above-mentioned method for ground evaluation of the solar cell high-altitude calibration device are implemented. For example, when the processor executes the computer program, the following steps are implemented: obtaining the solar orientation accuracy, solar search efficiency and solar tracking stabilization time of the calibration device; determining the solar tracking performance of the calibration device according to the solar orientation accuracy, the solar search efficiency and the solar tracking stabilization time; obtaining the first solar cell parameters collected by the calibration device and the second solar cell parameters from the solar cell simulator; and determining the solar cell parameter measurement performance of the calibration device according to the first solar cell parameters and the second solar cell parameters.

[0170] Based on the same inventive concept, another embodiment of the present invention provides a non-transitory computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, all the steps of the above-mentioned method for ground evaluation of the solar cell high-altitude calibration device are implemented. For example, when the processor executes the computer program, the following steps are implemented: obtaining the solar orientation accuracy, solar search efficiency and solar tracking stabilization time of the calibration device; determining the solar tracking performance of the calibration device according to the solar orientation accuracy, the solar search efficiency and the solar tracking stabilization time; obtaining the first solar cell parameters collected by the calibration device and the second solar cell parameters from the solar cell simulator; determining the solar cell parameter measurement performance of the calibration device according to the first solar cell parameters and the second solar cell parameters.

[0171] In addition, the logic instructions in the above-mentioned memory can be implemented in the form of software functional units and can be stored in a computer-readable storage medium when sold or used as an independent product. Based on such an understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a ground evaluation system for a solar cell high-altitude calibration device, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0172] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the embodiments of the present invention. Those of ordinary skill in the art may understand and implement them without creative effort.

[0173] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a ground evaluation system for a solar cell high-altitude calibration device, or a network device, etc.) to execute the method for ground evaluation of a solar cell high-altitude calibration device described in each embodiment or some parts of the embodiment.

[0174] In addition, in the present invention, terms such as "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0175] In addition, in the present invention, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0176] In addition, in the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0177] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A ground evaluation system for a solar cell high-altitude calibration device, characterized in that: include: Nacelle suspension device, fan device, sunlight simulation device, calibration device, nacelle and solar cell simulation device; The calibration device and the pod are connected to the pod suspension device via cables; The pod suspension device is used to simulate the movements of a high-altitude balloon carrying the calibration device when flying; The fan device is used to generate wind fields with different speeds and directions; The sunlight simulation device is used to generate approximately parallel light to irradiate the calibration device; The calibration device is used to calibrate the solar cell; The solar cell simulation device is used to simulate the solar cell parameters output by the solar cell under different lighting conditions to evaluate the solar cell parameter measurement accuracy of the calibration device; The calibration device comprises: an angle measuring device, a calibration plate and an azimuth rotating plate; the angle measuring device is located on the surface of the calibration plate and is used to measure the angle between the normal line of the calibration plate and the incident light; the calibration plate rotates around the central axis so that the photoelectric sensor on the calibration plate is covered by the light generated by the sunlight simulation device; the azimuth rotating plate is used to rotate when the calibration plate deviates from the light source so that the calibration plate is aligned with the light source; The angle measuring device comprises: a sun sensor, a display screen, a power supply module and a storage module; the sun sensor is used to detect the incident angle of sunlight; the display screen is used to display the incident angle of sunlight in real time; the power supply module is used to supply power to the angle measuring device; the storage module is used to store the incident angle of sunlight; The pod suspension device includes: a screw guide rail, a support rod, a mobile platform, a translation motor, a rotating platform, a rotating motor, a hoist and a frame; the mobile platform is placed on the screw guide rail and the support rod; the translation motor is used to drive the mobile platform to perform translational movement by driving the screw guide rail to rotate; the rotating motor is fixed on the rotating platform and drives the rotating platform to rotate through the rotor; the hoist is fixedly connected to the rotating platform and is used to make the pod rise or fall; the frame is used to provide support.

2. A method for ground evaluation of a solar cell high-altitude calibration device based on the ground evaluation system of the solar cell high-altitude calibration device according to claim 1, characterized in that: include: Obtain the calibration device's solar heading accuracy, solar search efficiency, and solar tracking stabilization time; Determining the solar tracking performance of the calibration device according to the solar orientation accuracy, the solar search efficiency, and the solar tracking stabilization time; Acquire the first solar cell parameters collected by the calibration device and the second solar cell parameters from the solar cell simulator; Determining the solar cell parameter measurement performance of the calibration device according to the first solar cell parameter and the second solar cell parameter; The obtaining of the solar orientation accuracy of the calibration device comprises: starting the calibration device and the sunlight simulation device; and measuring the solar orientation accuracy of the calibration device by an angle measurement device when the calibration device is aligned with the light source and stops moving; The method of measuring the solar orientation accuracy of the calibration device by an angle measurement device comprises: obtaining a plurality of solar incident angles measured by the angle measurement device at a plurality of moments; and averaging the plurality of solar incident angles to obtain the solar orientation accuracy of the calibration device.

3. The method for ground evaluation of a solar cell high-altitude calibration device according to claim 2, characterized in that: The obtaining of the sun search efficiency of the calibration device comprises: The upper end of the cable is rotated to a preset angle by a pod suspension device; The calibration device is started to time until the indication of the angle measuring device is less than a preset threshold value and does not change within a preset time period, then the timing is stopped to obtain the sun search efficiency of the calibration device.

4. The method for ground evaluation of a solar cell high-altitude calibration device according to claim 2, characterized in that: The step of obtaining the daily tracking stability time of the calibration device comprises: The upper end of the cable moves at a preset translation speed and a preset rotation speed through a pod suspension device; A fan device is used to generate a preset wind field; Measuring the time interval between two times when the indication of the angle measuring device exceeds a preset threshold; The daily tracking stabilization time is determined according to the interval time.

5. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the program, the steps of the method according to any one of claims 2 to 4 are implemented.

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