Performance evaluation system and performance evaluation method of solar cell

Abstract

The invention discloses a performance evaluation system and a performance evaluation method of a solar cell. The performance evaluation system of the solar cell comprises a space-based experiment end and a telemetering processing end, the space-based experiment end is used for being installed on a space-based platform, bearing a solar cell experiment group and a solar cell control group, and collecting first working index data of a to-be-tested solar cell in the solar cell experiment group and second working index data of a control solar cell in the solar cell control group, the contrast solar cell is a solar cell of which the performance test is completed; and the telemetering processing end is used for performing index comparison processing according to the first working index data and the second working index data when the first working index data and the second working index data are received, so as to obtain an on-orbit performance evaluation result of the solar cell to be tested. According to the technical scheme, on-orbit performance evaluation of the solar cell to be tested can be conveniently completed based on the space-based platform.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of space engineering, and in particular to a performance evaluation system of a solar cell and a performance evaluation method of a solar cell. BACKGROUND

[0002] In space engineering, solar energy is the only energy source for most spacecraft, so satellites are usually equipped with solar panels to convert light energy into electrical energy through the photoelectric effect of solar cells on the solar panels to supply on-board electrical equipment. With the development of technology, products are constantly iterated, and new solar cell technologies such as new solar cells and new patching processes emerge in an endless stream. New solar cell technologies need to be tested and verified on the ground, and their patching processes, cell performance and stability need to be tested through launch and on-orbit testing. After accumulating certain on-orbit flight experience (or on-orbit performance testing), new solar cell technologies can be mass-produced and used on a large scale in space. The on-orbit environment cannot be completely simulated on the ground, such as space high and low temperature environment, vacuum environment and high energy particle radiation environment, therefore, it is desirable to use a space-based platform (such as a satellite) to test the performance of solar cells.

[0003] In the process of conceiving and implementing the present application, the inventors found that how to conveniently complete on-orbit performance evaluation of new solar cells based on a space-based platform is a technical problem to be solved by those skilled in the art. SUMMARY

[0004] The present application aims to provide a performance evaluation system of a solar cell and a performance evaluation method of a solar cell, which can conveniently complete on-orbit performance evaluation of a to-be-tested solar cell based on a space-based platform.

[0005] To achieve the above-mentioned purpose: In a first aspect, the embodiments of the present application provide a performance evaluation system of a solar cell, comprising: a space-based experimental end and a telemetry processing end; the space-based experimental end is used to be installed on a space-based platform and carries a solar cell experimental group and a solar cell control group, and is further used to collect first working index data of a to-be-tested solar cell in the solar cell experimental group and second working index data of a control solar cell in the solar cell control group, wherein the control solar cell is a solar cell that has completed performance testing; the telemetry processing end is used to perform index comparison processing according to the first working index data and the second working index data when the first working index data and the second working index data are received, so as to obtain an on-orbit performance evaluation result of the to-be-tested solar cell.

[0006] In an embodiment, the layout of the control solar cell in the control group is the same as that of the to-be-tested solar cell in the experimental group; and / or, the first working index data and the second working index data represent the same type of cell index; the cell index includes at least one of temperature, short-circuit current, open-circuit voltage, corresponding power supply current under load power supply state and corresponding power supply voltage under load power supply state, and state flag data corresponding to circuit state; the state flag data corresponding to circuit state includes open-circuit state flag data corresponding to open-circuit state, short-circuit state flag data corresponding to short-circuit state, and power supply state flag data corresponding to load power supply state.

[0007] In an embodiment, the telemetry processing end is configured to perform index comparison processing according to the first working index data and the second working index data to obtain a working step corresponding to the on-orbit performance evaluation result of the to-be-tested solar cell, including: performing data recording and / or calculation processing according to the first working index data to obtain first to-be-compared data corresponding to the to-be-tested solar cell, the first to-be-compared data including at least one of first open-circuit voltage, first short-circuit current, first maximum output power, first temperature variance, first open-circuit voltage variance, and first maximum output power variance; performing data recording and / or calculation processing according to the second working index data to obtain second to-be-compared data corresponding to the control solar cell, the second to-be-compared data including at least one of second open-circuit voltage, second short-circuit current, second maximum output power, second temperature variance, second open-circuit voltage variance, and second maximum output power variance; comparing the first to-be-compared data with the second to-be-compared data to obtain a comparison result; and obtaining the on-orbit performance evaluation result of the to-be-tested solar cell compared with the control solar cell according to the comparison result and a preset performance evaluation rule.

[0008] In an embodiment, the telemetry processing end is configured to perform index comparison processing according to the first working index data and the second working index data to obtain the on-orbit performance evaluation result of the to-be-tested solar cell, and can further include the following working steps: performing data filtering processing according to the received first working index data and first index threshold information to update the first working index data or eliminate the first working index data, the threshold in the first index threshold information being set based on ground performance test ground working index data of the to-be-tested solar cell; and performing data filtering processing according to the received second working index data and second index threshold information to update the second working index data or eliminate the second working index data, the threshold in the second index threshold information being set based on ground performance test ground working index data of the control solar cell.

[0009] In an embodiment, the space-based experiment end includes an experiment board and a sampling module; the experiment board is used to be installed on the skyward surface of the space-based platform, and is also used to carry a solar cell experiment group and a solar cell control group on the skyward surface thereof, wherein the skyward surface represents a surface facing away from the earth and toward the sky; the sampling module is electrically connected with a to-be-tested solar cell in the solar cell experiment group and a control solar cell in the solar cell control group respectively, and is used to collect first working index data of the to-be-tested solar cell and second working index data of the control solar cell in a first data form.

[0010] In an embodiment, the sampling module includes a plurality of sampling circuits, each of which is electrically connected with the to-be-tested solar cell or the control solar cell, and includes a positive electrode contact, a negative electrode contact, a temperature collection unit, a current collection unit, a voltage collection unit, a load unit, a first switch and a second switch; one end of the load unit is connected with one of the positive electrode contact and the negative electrode contact through the second switch, the other end of the load unit is connected with the other of the positive electrode contact and the negative electrode contact, and a fixed resistance value corresponding to the load unit is configured to match a resistance value corresponding to a maximum power point of the to-be-tested solar cell or the control solar cell; the positive electrode contact and the negative electrode contact are also connected through the first switch, the current collection unit is connected in series with a passage end of the first switch, and the voltage collection unit is connected in parallel with the first switch; the positive electrode contact and the negative electrode contact are used to cooperate with the to-be-tested solar cell or the control solar cell; the temperature collection unit is arranged adjacent to the positive electrode contact and / or the negative electrode contact, and is used to detect a temperature of the to-be-tested solar cell or the control solar cell connected with the positive electrode contact and the negative electrode contact; the first switch and the second switch receive on-off control signals respectively, so that the sampling circuit is switched between a plurality of circuit states, and the plurality of circuit states include at least two of an open circuit state, a short circuit state and a load power supply state; the current collection unit is used to collect currents in the circuit states, and the currents in the circuit states include a short circuit current in the short circuit state and / or a power supply current in the load power supply state; the voltage collection unit is used to collect voltages in the circuit states, and the voltages in the circuit states include an open circuit voltage in the open circuit state and / or a power supply voltage in the load power supply state.

[0011] In an embodiment, the solar cell experiment group includes n groups of to-be-tested solar cells, and the solar cell control group includes n groups of control solar cells, wherein n is a natural number greater than or equal to 1; and / or, the to-be-tested solar cell is composed of a plurality of battery monomers in series or in parallel; and / or, the control solar cell is composed of a plurality of battery monomers in series or in parallel.

[0012] In one embodiment, the space-based platform includes an on-board processing system; the space-based experimental terminal is also used to establish a communication connection with the on-board processing system and send first working index data and second working index data to the on-board processing system, so that the on-board processing system performs data transmission processing on the first working index data and second working index data; the telemetry processing terminal is also used to establish a communication connection with the on-board processing system to receive the first working index data and second working index data transmitted by the on-board processing system.

[0013] Secondly, embodiments of this application provide a method for evaluating the performance of a solar cell, comprising the following steps: S1: receiving first working index data of the solar cell under test in the solar cell experimental group and second working index data of the control solar cell in the solar cell control group sent by a space-based platform, wherein the control solar cell is a solar cell that has completed performance evaluation; S2: performing index comparison processing based on the first working index data and the second working index data to obtain the on-orbit performance evaluation result of the solar cell under test.

[0014] In one embodiment, the battery indicators represented by the first operating indicator data and the second operating indicator data are of the same type. The battery indicators include at least one of the following: temperature, short-circuit current, open-circuit voltage, supply current and supply voltage under load power supply conditions, and status flag data corresponding to the circuit state.

[0015] In one embodiment, step S2 includes: recording and / or calculating data based on first operating index data to obtain first control data corresponding to the solar cell under test, the first control data including at least one of first open-circuit voltage, first short-circuit current, first maximum output power, first temperature variance, first open-circuit voltage variance, and first maximum output power variance; recording and / or calculating data based on second operating index data to obtain second control data corresponding to a control solar cell, the second control data including at least one of second open-circuit voltage, second short-circuit current, second maximum output power, second temperature variance, second open-circuit voltage variance, and second maximum output power variance; comparing the first control data with the second control data to obtain a comparison result; and obtaining the on-orbit performance evaluation result of the solar cell under test compared to the control solar cell based on the comparison result and preset performance evaluation rules.

[0016] The solar cell performance evaluation system and method provided in this application include: a space-based experimental terminal and a telemetry processing terminal; the space-based experimental terminal is installed on a space-based platform and carries a solar cell experimental group and a solar cell control group, and is also used to collect the first working index data of the solar cell under test in the solar cell experimental group and the second working index data of the control solar cell in the solar cell control group, wherein the control solar cell is a solar cell that has completed performance testing; the telemetry processing terminal is used to perform index comparison processing based on the first working index data and the second working index data when receiving the first working index data and the second working index data, so as to obtain the on-orbit performance evaluation result of the solar cell under test. Thus, the technical solution of this application can install the solar cell under test and a control solar cell (e.g., a mature solar cell) that has completed performance testing on a space-based experimental platform, and conduct on-orbit performance testing on both under the same on-orbit environment to obtain their respective corresponding working index data. Furthermore, the working index data of the solar cell under test and the control solar cell are compared using a comparative method through a telemetry processing terminal to evaluate the merits of the solar cell under test compared to the control solar cell, thereby obtaining the on-orbit performance evaluation result of the solar cell under test. Therefore, the technical solution of this application does not require complex control of the on-orbit testing environment when conducting on-orbit performance evaluation of the solar cell under test. Thus, the technical solution of this application can conveniently complete the on-orbit performance evaluation of a new solar cell based on a space-based platform. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0018] Figure 1 This is a first structural schematic diagram of the solar cell performance evaluation system provided in the first embodiment of this application.

[0019] Figure 2 This is an IV curve obtained from the ground performance test of a solar cell exemplified in the first embodiment of this application.

[0020] Figure 3 This is a second structural schematic diagram of the solar cell performance evaluation system provided in the first embodiment of this application.

[0021] Figure 4 This is a schematic diagram of the arrangement of the solar cell experimental group and the solar cell control group in the experimental board of the first embodiment of this application.

[0022] Figure 5 This is a schematic diagram illustrating the orientation of a satellite as exemplified in the first embodiment of this application.

[0023] Figure 6 This is a schematic diagram of the sampling circuit in the sampling module provided in the first embodiment of this application.

[0024] Figure 7 This is a simplified diagram of the processing flow of the telemetry processing terminal exemplified in the first embodiment of this application.

[0025] Figure 8 This is a flowchart illustrating the performance evaluation method for solar cells provided in the second embodiment of this application.

[0026] Figure 9 This is a schematic diagram of the structure of the computing device provided in the embodiments of this application.

[0027] The realization of the objectives, functional features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. The accompanying drawings have illustrated specific embodiments of this application, which will be described in more detail below. These drawings and textual descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concepts of this application to those skilled in the art through reference to specific embodiments. Detailed Implementation

[0028] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0029] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, components, features, and elements with the same names in different embodiments of this application may have the same meaning or different meanings, the specific meaning of which must be determined by its interpretation in that specific embodiment or further in conjunction with the context of that specific embodiment.

[0030] It should be understood that although the terms first, second, third, etc., may be used herein to describe various information, such information should not be limited to these terms. These terms are used only to distinguish information of the same type from one another. For example, without departing from the scope of this document, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if," as used herein, can be interpreted as "when," "when," or "in response to determination." Furthermore, as used herein, the singular forms "a," "an," and "the" are intended to also include the plural forms unless the context indicates otherwise. It should be further understood that the terms "comprising," "including," indicate the presence of the stated feature, step, operation, element, component, item, kind, and / or group, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, kinds, and / or groups. The terms "or" and "and / or" as used herein are to be interpreted as inclusive, or mean any one or any combination thereof. Therefore, "A, B, or C" or "A, B, and / or C" means "any one of the following: A; B; C; A and B; A and C; B and C; A, B, and C". Exceptions to this definition will only occur if the combination of elements, functions, steps, or operations is inherently mutually exclusive in some way.

[0031] It should be understood that although the steps in the flowcharts of this application's embodiments are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some of the steps in the figures may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be performed alternately or in turn with other steps or at least a portion of the sub-steps or stages of other steps.

[0032] It should be noted that step designations such as S1 and S2 are used in this document for the purpose of more clearly and concisely describing the corresponding content, and do not constitute a substantial limitation on the order. In specific implementation, those skilled in the art may execute S2 first and then S1, etc., but these should all be within the protection scope of this application.

[0033] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0034] In the following description, the use of suffixes such as "module," "part," or "unit" to denote elements is solely for the purpose of illustration and has no specific meaning in itself. Therefore, "module," "part," or "unit" may be used interchangeably.

[0035] First Embodiment See Figure 1 The first embodiment of this application (hereinafter referred to as "this embodiment") provides a performance evaluation system 1 for solar cells, including: a space-based experimental terminal 101 and a telemetry processing terminal 102.

[0036] Among them, the space-based experimental terminal 101 is used to be installed on the space-based platform and to carry the solar cell experimental group B1 and the solar cell control group B2. It is also used to collect the first working index data of the solar cell under test in the solar cell experimental group B1 and the second working index data of the control solar cell in the solar cell control group B2.

[0037] In one embodiment, the space-based platform includes, but is not limited to, one of the following: satellites, space stations, probe rockets, and other tools that can fly in space and are in an on-orbit environment.

[0038] In one embodiment, the space-based experimental terminal 101 is used to carry the solar cell experimental group B1 and the solar cell control group B2, and to support the operation of the solar cell under test in the solar cell experimental group B1 and the control solar cell in the solar cell control group B2.

[0039] In one embodiment, the layout of the control solar cell in solar cell control group B2 is the same as that of the solar cell under test in solar cell experimental group B1. Thus, the technical solution of this embodiment can better ensure the consistency of the on-orbit operating environment between the control solar cell and the solar cell under test.

[0040] In one embodiment, both the control solar cell and the solar cell under test can be sheet-like structures.

[0041] The reference solar cell is a solar cell that has completed performance testing. This reference solar cell can be one that has completed both ground-based and on-orbit performance testing. For example, the reference solar cell can be a relatively mature solar cell or a technologically advanced solar cell currently available on the market.

[0042] In one embodiment, the first operating index data and the second operating index data represent the same type of battery index.

[0043] In one embodiment, the battery indicators represented by the first and second operating index data are both key indicators that can support the on-orbit performance evaluation of solar cells.

[0044] In one embodiment, the battery parameters include, but are not limited to, at least one of the following: temperature, short-circuit current, open-circuit voltage, supply current and supply voltage under load power supply conditions, and status flag data corresponding to circuit conditions.

[0045] In one embodiment, the status flag data corresponding to the circuit state includes, but is not limited to, at least one of the following: open circuit status flag data corresponding to the open circuit state, short circuit status flag data corresponding to the short circuit state, and power supply status flag data corresponding to the load power supply state.

[0046] In one embodiment, the aforementioned temperature is the temperature of the solar cell.

[0047] For example, the IV relationship in the IV curve obtained from ground-based performance testing of solar cells in a ground environment is not nonlinear, such as... Figure 2 The figure shows the IV curves corresponding to different light intensities (200~1000W / m²) at a specific temperature (25℃) for the solar cell. Key indicators include the short-circuit current (Isc) when the solar cell is short-circuited, the open-circuit voltage (Voc) when the solar cell is open-circuited, and the maximum output power Pmax of the solar cell, along with the corresponding supply voltage and current. Thus, the performance data collected during on-orbit performance testing of the solar cell in an on-orbit environment (such as the first performance data and the second performance data) can include data characterizing temperature, short-circuit current, open-circuit voltage, and the supply voltage and current corresponding to the maximum output power.

[0048] The telemetry processing terminal 102 is used to perform index comparison processing based on the first working index data and the second working index data when it receives the first working index data and the second working index data, so as to obtain the on-orbit performance evaluation results of the solar cell under test.

[0049] In one embodiment, the telemetry processing terminal 102 may be located on Earth or in other physical environments (such as satellites, space stations, etc.).

[0050] In one embodiment, the telemetry processing terminal 102 can establish a communication connection directly or indirectly with the space-based experimental terminal 101 on the space-based platform. Specifically, if the telemetry processing terminal 102 directly establishes a communication connection with the space-based experimental terminal 101 on the space-based platform, for example, the space-based experimental terminal 101 may be equipped with a communication module, allowing the telemetry processing terminal 102 to directly establish a communication connection with the communication module in the space-based experimental terminal 101 to obtain first and second performance indicator data from the space-based experimental terminal 101. Alternatively, if the telemetry processing terminal 102 indirectly establishes a communication connection with the space-based experimental terminal 101 on the space-based platform, for example, the telemetry processing terminal 102 in the performance evaluation system 1 can establish a communication connection with the space-based platform through the data transmission function of the space-based platform, allowing the space-based experimental terminal 101 to indirectly transmit the collected first and second performance indicator data to the telemetry processing terminal 102 via the space-based platform.

[0051] For example, see Figure 2 As can be seen, the IV curves differ significantly with changes in light intensity. Furthermore, temperature variations also alter the IV curves. Therefore, ground-based IV testing requires controlling variables and obtaining IV curves under constant temperature or light intensity. However, the on-orbit environment is typically impossible to fully simulate on the ground, such as the high and low temperatures of space, vacuum environments, and high-energy particle radiation environments. Therefore, using space-based platforms to test solar cells is a preferable approach. However, the on-orbit environment of space-based platforms cannot be precisely controlled. For example, using a satellite as a space-based platform, the satellite is in motion on its orbital plane, and the angle of sunlight exposure changes with the satellite's position. Therefore, the temperature and light intensity of the solar cells cannot be precisely controlled as in ground-based testing, making it impossible to accurately obtain IV curves under controlled variables. The irregular changes in light intensity and temperature at different times mean that the collected IV relationships cannot characterize the true performance of the solar cells. Therefore, the technical solution of this embodiment performs index comparison processing by using the first working index data and the second working index data to obtain the on-orbit performance evaluation results of the solar cell under test. It can compare the on-orbit performance of the solar cell under test with that of the control solar cell to obtain the on-orbit performance evaluation results. That is, the technical solution of this embodiment has low requirements for the control of environmental variables when evaluating the on-orbit performance of the solar cell under test. The on-orbit performance evaluation can be completed by comparing it with other mature solar cells. Therefore, the technical solution of this embodiment can conveniently complete the on-orbit performance evaluation of new solar cells based on a space-based platform.

[0052] In summary, the solar cell performance evaluation system 1 provided in this embodiment includes: a space-based experimental terminal 101 and a telemetry processing terminal 102; the space-based experimental terminal 101 is used to be installed on a space-based platform and carries the solar cell experimental group B1 and the solar cell control group B2, and is also used to collect the first working index data of the solar cell under test in the solar cell experimental group B1 and the second working index data of the control solar cell in the solar cell control group B2, wherein the control solar cell is a solar cell that has completed performance testing; the telemetry processing terminal 102 is used to perform index comparison processing based on the first working index data and the second working index data when receiving the first working index data and the second working index data, so as to obtain the on-orbit performance evaluation results of the solar cell under test. Thus, the technical solution of this application can install the solar cell under test and a control solar cell (e.g., a mature solar cell) that has completed performance testing on a space-based platform via the space-based experimental terminal 101, and conduct on-orbit performance testing on both under the same on-orbit environment to obtain their respective corresponding operating index data. Furthermore, the telemetry processing terminal 102 compares the operating index data of the solar cell under test and the control solar cell using a comparative method to evaluate the superiority or inferiority of the solar cell under test compared to the control solar cell, thereby obtaining the on-orbit performance evaluation result of the solar cell under test. Therefore, the technical solution of this application does not require complex control of the on-orbit testing environment when conducting on-orbit performance evaluation of the solar cell under test. In addition, the technical solution of this embodiment can directly install the space-based experimental terminal 101 on various existing space-based platforms (e.g., satellites) with simple modifications to enable the space-based platform to carry out solar cell testing functions, which has the advantages of low cost and ease of implementation. Therefore, the technical solution of this application can conveniently and cost-effectively complete the on-orbit performance evaluation of new solar cells based on a space-based platform.

[0053] In one embodiment, the first data format of the first and second operational indicator data (or various indicator data therein) collected by the space-based experimental terminal 101 can be either analog or digital data. It should be understood that the first data format of the first and second operational indicator data (or various indicator data therein) can be converted to other data formats (or second data formats) based on the needs of subsequent data processing and data transmission. For example, when the initially collected first and second operational indicator data (or various indicator data therein) are in analog data format, they can be converted to digital data format (i.e., second data format) for easier subsequent processing. The entity performing the data format conversion can be configured according to actual needs, such as the space-based experimental terminal 101, the telemetry processing terminal 102, or a space-based platform.

[0054] In one embodiment, the telemetry processing terminal 102 is used for the following steps when performing index comparison processing based on first working index data and second working index data to obtain the on-orbit performance evaluation result of the solar cell under test: performing data recording and / or calculation processing based on the first working index data to obtain first comparison data corresponding to the solar cell under test, the first comparison data including at least one of first open-circuit voltage, first short-circuit current, first maximum output power, first temperature variance, first open-circuit voltage variance, and first maximum output power variance; performing data recording and / or calculation processing based on the second working index data to obtain second comparison data corresponding to the reference solar cell, the second comparison data including at least one of second open-circuit voltage, second short-circuit current, second maximum output power, second temperature variance, second open-circuit voltage variance, and second maximum output power variance; comparing the first comparison data and the second comparison data to obtain a comparison result; and obtaining the on-orbit performance evaluation result of the solar cell under test compared to the reference solar cell based on the comparison result and preset performance evaluation rules.

[0055] In one embodiment, data recording can be the recording of multiple working indicator data (e.g., first working indicator data and / or second working indicator data) received within a specific time period based on specific changing factors (e.g., time changes, temperature changes, etc.) to obtain a record file that can reflect changes in battery indicators.

[0056] In one embodiment, when the working indicator data (e.g., first working indicator data and / or second working indicator data) includes multiple battery indicators, each battery indicator can be recorded separately to obtain multiple record files, wherein each record file can reflect the changes of different battery indicators.

[0057] For example, when the battery's operating performance data includes various parameters such as temperature, short-circuit current, open-circuit voltage, and maximum output power under load power conditions, the telemetry processing terminal, upon receiving multiple operating performance data, can record the temperature to obtain a temperature log file, record the short-circuit current to obtain a current log file, record the open-circuit voltage to obtain a voltage log file, and record the maximum output power to obtain a power log file. The temperature log file reflects temperature changes, the current log file reflects short-circuit current changes, the voltage log file reflects open-circuit voltage changes, and the power log file reflects maximum output power changes. The maximum output power under load power conditions can be calculated based on the power supply circuit and voltage under load power conditions, and the corresponding calculation formula can be: ,in, Indicates the maximum output power corresponding to the load power supply state. Indicates the corresponding supply voltage under load power supply conditions. This indicates the supply current under load power supply conditions.

[0058] In one embodiment, the computational processing can characterize the process of calculating data corresponding to various battery indicators included in multiple working index data (e.g., first working index data and / or second working index data) in any calculation method to obtain numerical data that can comprehensively reflect the specific performance of the solar cell corresponding to the working index data.

[0059] In one embodiment, the first open-circuit voltage, first short-circuit current, and first maximum output power included in the first comparison data can be obtained through averaging calculations during the calculation process. Similarly, the second open-circuit voltage, second short-circuit current, and second maximum output power included in the second comparison data can also be obtained through averaging calculations during the calculation process.

[0060] For example, the average value of the open-circuit voltage (i.e., the first open-circuit voltage) can be obtained by averaging the open-circuit voltages included in the voltage record file corresponding to the first operating index data or in the multiple first operating index data; the average value of the short-circuit current (i.e., the first short-circuit current) can be obtained by averaging the short-circuit currents included in the current record file corresponding to the first operating index data or in the multiple first operating index data; and the average value of the power (i.e., the first maximum output power) can be obtained by averaging the maximum output power included in the power record file corresponding to the first operating index data or in the multiple first operating index data.

[0061] In one embodiment, the first temperature variance, the first open-circuit voltage variance, and the first maximum output power variance included in the first comparison data can be obtained through variance calculation processing included in the calculation process. Similarly, the second temperature variance, the second open-circuit voltage variance, and the second maximum output power variance included in the second comparison data can be obtained through variance calculation processing included in the calculation process.

[0062] For example, variance calculation can be performed based on the temperature records corresponding to the first operating index data or the temperatures included in multiple first operating index data to obtain the temperature variance (i.e., the first temperature variance); variance calculation can be performed based on the open-circuit voltages included in the voltage records corresponding to the first operating index data or the open-circuit voltages included in multiple first operating index data to obtain the open-circuit voltage variance (i.e., the first open-circuit voltage variance); variance calculation can be performed based on the short-circuit currents included in the current records corresponding to the first operating index data or the short-circuit currents included in multiple first operating index data to obtain the short-circuit current variance (i.e., the first short-circuit current variance); and variance calculation can be performed based on the maximum output power included in the power records corresponding to the first operating index data or the maximum output power included in multiple first operating index data to obtain the power variance (i.e., the first maximum output power variance).

[0063] For example, taking the calculation of open-circuit voltage variance as an example, suppose data was collected for a specific solar cell (such as a specific control solar cell or a specific solar cell under test). If there is an open-circuit voltage, then first... Calculate the average of the open-circuit voltages: ; in, This represents the mean. Indicates the number of open-circuit voltages. Represents any open-circuit voltage. The summation index is used to represent values ​​from 1 to... Traverse each open circuit voltage ; Substitute the mean Calculate the variance of the open-circuit voltage: ;in, Represents the variance of the open-circuit voltage; It should be understood that the calculation of the variance of short-circuit current, the variance of maximum output power, and the variance of temperature are similar to the calculation formulas above, and will not be repeated here.

[0064] In one embodiment, before the telemetry processing terminal 102 performs index comparison processing based on the first working index data and the second working index data to obtain the on-orbit performance evaluation result of the solar cell under test, it may further include the following steps: performing data filtering processing based on the received first working index data and first index threshold information to update or remove the first working index data, wherein the threshold in the first index threshold information is set based on the ground working index data obtained from the ground performance test of the solar cell under test; performing data filtering processing based on the received second working index data and the second index threshold information to update or remove the second working index data, wherein the threshold in the second index threshold information is set based on the ground working index data obtained from the ground performance test of the reference solar cell.

[0065] In one embodiment, the index thresholds in the index threshold information (such as the first index threshold information and the second index threshold information) can be based on ground performance test data to obtain ground working index data, and the upper limit and / or lower limit values ​​of each battery index in the ground working index data (e.g., the upper limit value Ih and the lower limit value Il of short-circuit current, the upper limit value Vh and the lower limit value Vl of open-circuit voltage, and the upper limit value Vh and the lower limit value Vl of temperature) are determined as thresholds for evaluating whether the data corresponding to the battery indexes tested in orbit are valid.

[0066] Thus, in this embodiment, the technical solution filters the working index data (e.g., the first working index data and the second working index data) according to threshold information, which can ensure the validity of the battery index data such as temperature, voltage and current sampling, and filter out battery index data that are too high or too low due to acquisition errors and fluctuations in illumination conditions (e.g., too high or too low short-circuit current data, too high or too low open-circuit voltage data, etc.), thereby optimizing the accuracy of subsequent on-orbit performance evaluation of the solar cell under test.

[0067] In one implementation, preset performance evaluation rules include, but are not limited to: When the open-circuit voltage, short-circuit current, and maximum output power are all relatively large, the on-orbit performance evaluation results indicate that the on-orbit performance of the solar cell under test is higher than that of the control solar cell. When the temperature variance, open-circuit voltage variance, and maximum output power variance are small, the on-orbit performance evaluation results indicate that the on-orbit performance of the solar cell under test is higher than that of the control solar cell. When the comparison results indicate that the weight of the index corresponding to the solar cell under test is greater than the weight of the index corresponding to the control solar cell, the on-orbit performance evaluation results indicate that the on-orbit performance of the solar cell under test is higher than that of the control solar cell.

[0068] In one embodiment, the comparison between the first data to be compared and the second data to be compared can be a simple numerical comparison, or it can be a weighted comparison based on the weights corresponding to each battery index and the values ​​of each battery index in the data to be compared, after weighting and normalization to obtain the index weights corresponding to the solar cell to be tested and the index weights corresponding to the control solar cell.

[0069] In one embodiment, the weighted comparison method is applicable to situations where some cells have high performance indicators and others have low performance indicators in the first set of comparison data for the solar cells under test.

[0070] In one embodiment, see Figure 3 , Figure 4 and Figure 5 The space-based experimental terminal 101 includes an experimental board 1011 and a sampling module 1012.

[0071] Among them, experimental board 1011 (see reference) Figure 4 It is used to install on the celestial surface of the space-based platform, and also to support the solar cell experimental group B1 and the solar cell control group B2 on its own celestial surface.

[0072] In one embodiment, the solar cell experimental group B1 includes n groups of solar cells to be tested, and the solar cell control group B2 includes n groups of control solar cells, where n is a natural number greater than or equal to 1. Optionally, n is preferably 2 or 3 to achieve redundancy and avoid the failure of a single group of solar cells in the solar cell experimental group B1 or the solar cell control group B2, which would affect the test results.

[0073] In one embodiment, the solar cell under test is composed of a number of individual cells connected in series or in parallel; and / or, the control solar cell is composed of a number of individual cells connected in series or in parallel.

[0074] Among them, the side facing away from the Earth and towards the sky is represented by the celestial surface (see reference). Figure 4 This optimizes the lighting environment for solar cells.

[0075] The sampling module 1012 establishes electrical connections with the solar cell under test in solar cell experimental group B1 and the control solar cell in solar cell control group B2, respectively, for collecting the first operating index data of the solar cell under test and the second operating index data of the control solar cell in a first data format. Optionally, when the first data format is analog data, a subsequent analog-to-digital conversion process may be included.

[0076] In one embodiment, see Figure 6The sampling module 1012 includes multiple sampling circuits. The sampling circuits are used to electrically connect to the solar cell under test or the control solar cell. The sampling circuits include a positive terminal contact, a negative terminal contact, a temperature acquisition unit, a current acquisition unit, a voltage acquisition unit, a load unit, a first switch, and a second switch.

[0077] One end of the load unit is connected to either the positive or negative terminal via a second switch, and the other end of the load unit is connected to the other of the positive or negative terminal. The fixed resistance value of the load unit is configured to match the resistance value corresponding to the maximum power point of the solar cell under test or the reference solar cell.

[0078] The positive and negative contacts are connected via a first switch. The current acquisition unit is connected in series with the circuit end of the first switch, and the voltage acquisition unit is connected in parallel with the first switch. The positive and negative contacts are used to connect the solar cell under test or the control solar cell.

[0079] The temperature acquisition unit is located near the positive and / or negative terminals to detect the temperature of the solar cell under test or the control solar cell connected by the positive and negative terminals.

[0080] The first switch and the second switch respectively receive on / off control signals, which cause the sampling circuit to switch between multiple circuit states, including at least two of the following: open circuit state, short circuit state, and load power supply state.

[0081] The current acquisition unit is used to acquire the current under each circuit condition, including the short-circuit current under short-circuit condition and / or the power supply current under load power supply condition.

[0082] The voltage acquisition unit is used to acquire the voltage under various circuit conditions, including the open-circuit voltage under open-circuit conditions and / or the supply voltage under load supply conditions.

[0083] Thus, the technical solution of this embodiment can acquire short-circuit current under short-circuit conditions, power supply current under load power supply conditions, open-circuit voltage under open-circuit conditions, and / or power supply voltage under load power supply conditions through a sampling circuit with a simple circuit structure and low implementation cost.

[0084] In one embodiment, see Figure 3The space-based platform includes an on-board processing system 2; the space-based experimental terminal 101 is also used to establish a communication connection with the on-board processing system 2 and send first and second working index data to the on-board processing system 2, so that the on-board processing system 2 performs data transmission processing on the first and second working index data; the telemetry processing terminal 102 is also used to establish a communication connection with the on-board processing system 2 to receive the first and second working index data transmitted by the on-board processing system 2. Thus, in the technical solution of this embodiment, the performance evaluation system 1 can reuse the on-board processing system 2 to complete data transmission processing, further simplifying the structure of the performance evaluation system 1 and reducing the construction cost of the performance evaluation system 1.

[0085] In one embodiment, the data transmission processing may include at least data communication processing (e.g., satellite-to-ground data communication processing). In addition, when the work indicator data (such as first work indicator data and second work indicator data) in analog data form (i.e., first data form) is acquired, the data transmission processing may also include analog-to-digital conversion processing to convert the work indicator data (such as first work indicator data and second work indicator data) in analog data form (i.e., first data form) into work indicator data (such as first work indicator data and second work indicator data) in digital data form (i.e., second data form).

[0086] In one embodiment, see Figure 3 The on-board processing system 2 may also include an integrated electronic module 201 and a data transmission module 202. The integrated electronic module 201 has data processing capabilities and can be configured with various data processing functions. The data transmission module 202 provides a communication channel for the space-based platform to output and receive data, and performs communication data processing (such as encoding, decoding, and packetization) on the received or output data.

[0087] In one embodiment, the integrated electronic module 201 can be used to output on / off control signals corresponding to the first switch and the second switch, so as to control the sampling circuit to switch between multiple circuit states.

[0088] In one embodiment, the integrated electronic module 201 can also be used to convert the acquired analog data (such as the first work indicator data and the second work indicator data) into digital data (such as the first work indicator data and the second work indicator data), and to transmit the digital data (such as the first work indicator data and the second work indicator data) to the data transmission module 202.

[0089] In one embodiment, the data transmission module 202 can be used to establish a communication connection with the telemetry processing terminal 102 to send work indicator data (such as first work indicator data and second work indicator data) in digital data form to the ground telemetry processing terminal 102.

[0090] Based on the same inventive concept as the foregoing embodiments, the foregoing embodiments will be illustrated below by way of a specific example. (See reference...) Figure 3 The solar cell performance evaluation system 1 provided in this example includes a space-based experimental terminal 101 and a telemetry processing terminal 102. The space-based experimental terminal 101 is installed on a space-based platform, which includes an on-board processing system 2. The on-board processing system 2 may also include an integrated electronic module 201 and a data transmission module 202. The integrated electronic module 201 has data processing capabilities and can be configured with various data processing functions. The data transmission module 202 provides a communication channel for the space-based platform to output and receive data, and performs communication data processing on the received or output data.

[0091] The space-based experimental terminal 101 includes an experimental board 1011 and a sampling module 1012. The experimental board 1011 (see [reference needed]) Figure 4 It is used to install on the celestial surface of a space-based platform, and also to support the solar cell experimental group B1 and the solar cell control group B2 on its own celestial surface. Among them, the sampling module 1012 establishes electrical connections with the solar cell under test in the solar cell experimental group B1 and the control solar cell in the solar cell control group B2, respectively, and is used to collect the first working index data of the solar cell under test and the second working index data of the control solar cell in the first data form.

[0092] In one embodiment, the solar cell experimental group B1 includes n groups of solar cells to be tested, and the solar cell control group B2 includes n groups of control solar cells, where n is a natural number greater than or equal to 1. Optionally, n is preferably 2 or 3 to achieve redundancy and avoid the failure of a single group of solar cells in the solar cell experimental group B1 or the solar cell control group B2, which would affect the test results.

[0093] In one embodiment, the solar cells to be tested in solar cell experimental group B1 are solar cell cells using new technologies such as new materials, new production processes, or new patch technology.

[0094] In one embodiment, the control solar cell in the solar cell control group B2 is a solar cell using mature materials and manufacturing processes, and mature chip mounting technology (optionally, a triple-junction gallium arsenide solar cell commonly used in space).

[0095] In one embodiment, both the solar cell under test and the control solar cell undergo ground performance testing to obtain their respective ground operating data (e.g., IV data). The ground performance testing is calibrated by controlling temperature and light intensity variables to obtain ground operating data, which can then be used to set threshold information for indicators as a filtering standard for the battery indicators obtained in on-orbit performance testing.

[0096] In one embodiment, the sampling module 1012 includes multiple sampling circuits. Each control solar cell in the solar cell control group B2 and each solar cell under test in the solar cell experimental group B1 are independently connected to a sampling circuit.

[0097] See Figure 6 The sampling circuit includes a positive contact, a negative contact, a temperature acquisition unit, a current acquisition unit, a voltage acquisition unit, a load unit, a first switch, and a second switch. One end of the load unit is connected to one of the positive and negative contacts via the second switch, and the other end of the load unit is connected to the other of the positive and negative contacts. The fixed resistance value of the load unit is configured to match the resistance value corresponding to the maximum power point of the solar cell under test or the control solar cell. The positive and negative contacts are also connected via the first switch. The current acquisition unit is connected in series with the circuit terminal of the first switch, and the voltage acquisition unit is connected in parallel with the first switch. The positive and negative contacts are used to connect the solar cell under test or the control solar cell. The temperature acquisition unit is located near the positive and / or negative contacts and is used to detect the temperature of the solar cell under test or the control solar cell connected to the positive and negative contacts. The first and second switches receive on / off control signals, causing the sampling circuit to switch between multiple circuit states, including at least two of the following: open circuit, short circuit, and load-powered state. The current acquisition unit collects the current under each circuit state, including the short-circuit current under the short-circuit state and / or the supply current under the load-powered state.

[0098] The on / off control signals received by the first switch and the second switch can be output by the integrated electronic module 201 in the space-based platform, and are used to control the on / off state of the first switch and the second switch respectively.

[0099] In one embodiment, the first switch and the second switch can each be a switching relay. The first switch and the second switch respectively receive on / off control signals, causing the sampling circuit to switch between various circuit states to collect various battery parameters, as shown in the table below:

[0100] In one embodiment, devices such as voltage acquisition units, current acquisition units, and temperature acquisition units in the sampling circuit can convert the voltage, current, temperature, and / or circuit status flags of the solar cell into analog quantities (0~5V) (see [reference]). Figure 6 V represents voltage, I represents current, T represents temperature, and S represents circuit status indicator. The subscript for solar cell experimental group B1 is t, and the subscript for solar cell control group B2 is c. The working index data in the form of analog data is obtained. The working index data in the form of analog data is output to the integrated electronic module 201 (which can be responsible for the conversion of analog to digital and data transmission) for data processing (e.g., sampling at a fixed period (e.g., 1 second) and analog-to-digital conversion) to obtain the working index data in the form of digital data. Then, the integrated electronic module 201 can send the working index data in the form of digital data to the telemetry processing terminal 102 through the data transmission module 202 (responsible for satellite-to-ground data communication) so that the telemetry processing terminal 102 can perform on-orbit performance evaluation of the battery on the ground.

[0101] The telemetry processing terminal 102 is used to perform index comparison processing based on the first working index data and the second working index data when it receives the first working index data and the second working index data, so as to obtain the on-orbit performance evaluation results of the solar cell under test.

[0102] In one embodiment, see Figure 7 The processing flow of the telemetry processing terminal 102 includes: (1) Determine the type of battery index based on the circuit status flags in the working index data of the solar cell experimental group B1 and the solar cell control group B2 respectively, so as to determine the data processing mode. The data processing modes include Voc mode (or open circuit voltage processing mode), ISC mode (or short circuit current processing mode), Psa mode (or maximum output power processing mode), and T mode (or temperature processing mode).

[0103] (2) In each data processing mode, data filtering is performed based on the working index data and index threshold information to update or remove the working index data. This aims to ensure the effectiveness of temperature, voltage, and current sampling and to filter out data that is too high or too low due to acquisition errors and fluctuations in lighting conditions. The index threshold information can be based on ground working index data obtained from ground performance tests, and the upper and / or lower limits of each battery index in the ground working index data can be determined (e.g., the upper limit Ih and lower limit Il of short-circuit current, the upper limit Vh and lower limit Vl of open-circuit voltage, and the upper limit Vh and lower limit Vl of temperature) to serve as thresholds for evaluating the validity of the data corresponding to the battery indexes tested in orbit.

[0104] (3) Record and / or calculate the data based on the first working index data of the solar cell under test to obtain the first reference data of the solar cell under test. The first reference data includes at least one of the first open-circuit voltage, first short-circuit current, first maximum output power, first temperature variance, first open-circuit voltage variance, and first maximum output power variance. Record and / or calculate the data based on the second working index data of the reference solar cell to obtain the second reference data of the reference solar cell. The second reference data includes at least one of the second open-circuit voltage, second short-circuit current, second maximum output power, second temperature variance, second open-circuit voltage variance, and second maximum output power variance. Compare the first reference data with the second reference data to obtain the comparison result. Based on the comparison result and the preset performance evaluation rules, obtain the on-orbit performance evaluation result of the solar cell under test compared with the reference solar cell.

[0105] Thus, the technical solution in this example can determine whether the performance of the solar cell under test is superior to that of the control solar cell of mature technology by comparing the data of the solar cell experimental group B1 and the solar cell control group B2. The conditions for superior performance are a higher Voc / Isc / Psa ratio and lower variances in temperature and Voc / Isc / Psa.

[0106] Since most satellites typically have their payload antennas and other equipment positioned on the ground surface for Earth observation or communication, with fewer devices on the celestial surface, the space-based experimental terminal 101 can be installed on the celestial surface of the satellite, using the satellite as a space-based platform. When the satellite is in a steady-state Earth-facing state, the celestial surface is the sunlit surface. However, due to the satellite's orbital characteristics, the angle of illumination varies with the satellite's orbit and position. Therefore, the disadvantage of the space-based environment is the unstable illumination conditions, making it impossible to control individual parameters. However, the technical solution in this example uses a control group to horizontally compare the performance of the solar cell under test. Regardless of the satellite's position, illumination, and temperature conditions, the experimental and control groups operate under the same environmental conditions, and the control group represents mature technology. By comparing the data from the experimental group of the new technology with the data from the control group (comparing battery indicators such as open-circuit voltage, short-circuit current, maximum output power, and variance of each battery indicator), the on-orbit performance of the solar cell under test using the new technology can be quantitatively tested.

[0107] Second Embodiment See Figure 8The second embodiment of this application (hereinafter referred to as "this embodiment") provides a method for evaluating the performance of solar cells. This method can be executed by a computing device provided in this embodiment. The computing device can be implemented in software and / or hardware. In this embodiment, the execution subject of the method is a telemetry processing end as an example. The performance evaluation method of solar cells provided in this embodiment includes the following steps: S1: Receive the first working index data of the solar cell under test in the solar cell experimental group and the second working index data of the control solar cell in the solar cell control group sent by the space-based platform. The control solar cell is a solar cell that has completed performance evaluation. S2: Compare the first and second working index data to obtain the on-orbit performance evaluation results of the solar cell under test.

[0108] In one embodiment, the battery indicators represented by the first operating indicator data and the second operating indicator data are of the same type. The battery indicators include at least one of the following: temperature, short-circuit current, open-circuit voltage, supply current and supply voltage under load power supply conditions, and status flag data corresponding to the circuit state.

[0109] In one embodiment, step S2 includes: recording and / or calculating data based on first operating index data to obtain first control data corresponding to the solar cell under test, the first control data including at least one of first open-circuit voltage, first short-circuit current, first maximum output power, first temperature variance, first open-circuit voltage variance, and first maximum output power variance; recording and / or calculating data based on second operating index data to obtain second control data corresponding to a control solar cell, the second control data including at least one of second open-circuit voltage, second short-circuit current, second maximum output power, second temperature variance, second open-circuit voltage variance, and second maximum output power variance; comparing the first control data with the second control data to obtain a comparison result; and obtaining the on-orbit performance evaluation result of the solar cell under test compared to the control solar cell based on the comparison result and preset performance evaluation rules.

[0110] It should be understood that the specific implementation method and beneficial effects of this embodiment can be referred to the technical solution of the first embodiment, and will not be repeated here.

[0111] Based on the same inventive concept as the foregoing embodiments, this application provides a computing device, such as... Figure 9 As shown, the device includes: a processor 310 and a memory 311 storing a computer program; wherein, Figure 9The processor 310 shown in the diagram does not indicate that there is only one processor 310, but only indicates the positional relationship of the processor 310 relative to other devices. In practical applications, there can be one or more processors 310; similarly, Figure 9 The memory 311 illustrated in the diagram has the same meaning, that is, it is only used to indicate the positional relationship of memory 311 relative to other devices. In practical applications, there can be one or more memories 311. When the processor 310 runs the computer program, it implements the performance evaluation method of the solar cell applied to the above-mentioned device.

[0112] The device may also include at least one network interface 312. The various components of the device are coupled together via a bus system 313. It is understood that the bus system 313 is used to implement communication between these components. In addition to a data bus, the bus system 313 also includes a power bus, a control bus, and a status signal bus. However, for clarity, in... Figure 9 The general designated all buses as Bus System 313.

[0113] The memory 311 can be volatile memory or non-volatile memory, or both. Non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), ferromagnetic random access memory (FRAM), flash memory, magnetic surface memory, optical disc, or compact disc read-only memory (CD-ROM); magnetic surface memory can be disk storage or magnetic tape storage. Volatile memory can be random access memory (RAM), used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Synchronous Static Random Access Memory (SSRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM), SyncLink Dynamic Random Access Memory (SLDRAM), and Direct Rambus Random Access Memory (DRRAM).The memory 311 described in the embodiments of this application is intended to include, but is not limited to, these and any other suitable types of memory.

[0114] The memory 311 in this embodiment is used to store various types of data to support the operation of the device. Examples of this data include any computer programs used to operate on the device, such as operating systems and applications. The operating system includes various system programs, such as framework layers, core library layers, and driver layers, used to implement various basic business functions and handle hardware-based tasks. Applications can include various applications, such as media players and browsers, used to implement various application services. Here, the program implementing the method of this embodiment can be included in the application.

[0115] Based on the same inventive concept as the foregoing embodiments, this embodiment also provides a computer-readable storage medium storing a computer program. The computer-readable storage medium can be a magnetic random access memory (FRAM), a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a flash memory, a magnetic surface memory, an optical disc, or a compact disc read-only memory (CD-ROM), etc.; it can also be various devices including one or any combination of the above-mentioned memories, such as mobile phones, computers, tablet devices, personal digital assistants, etc. When the computer program stored in the computer-readable storage medium is run by a processor, it implements the aforementioned solar cell performance evaluation method. For the specific steps implemented when the computer program is executed by the processor, please refer to [reference needed]. Figure 8 The description of the illustrated embodiments will not be repeated here.

[0116] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0117] In this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.

[0118] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A performance evaluation system for solar cells, characterized in that, include: Space-based experimental terminal and telemetry processing terminal; The space-based experimental terminal is used to be installed on the space-based platform and to support the solar cell experimental group and the solar cell control group. It is also used to collect the first working index data of the solar cell under test in the solar cell experimental group and the second working index data of the control solar cell in the solar cell control group. The control solar cell is a solar cell that has completed performance testing. The telemetry processing terminal is used to perform index comparison processing based on the first working index data and the second working index data when it receives the first working index data and the second working index data, so as to obtain the on-orbit performance evaluation result of the solar cell under test.

2. The performance evaluation system according to claim 1, characterized in that, The layout structure of the control solar cell in the solar cell control group is the same as that of the solar cell under test in the solar cell experimental group; and / or, The battery indicators represented by the first and second working indicator data are of the same type; the battery indicators include at least one of temperature, short-circuit current, open-circuit voltage, power supply current and power supply voltage under load power supply conditions, and status flag data corresponding to the circuit state; the status flag data corresponding to the circuit state includes open-circuit status flag data corresponding to the open-circuit state, short-circuit status flag data corresponding to the short-circuit state, and power supply status flag data corresponding to the load power supply state.

3. The performance evaluation system according to claim 2, characterized in that, The telemetry processing terminal is used for index comparison processing based on the first working index data and the second working index data to obtain the on-orbit performance evaluation results of the solar cell under test. The corresponding working steps include: Data recording and / or calculation processing are performed based on the first working index data to obtain the first reference data corresponding to the solar cell under test. The first reference data includes at least one of the following: first open circuit voltage, first short circuit current, first maximum output power, first temperature variance, first open circuit voltage variance, and first maximum output power variance. Data recording and / or calculation processing are performed based on the second working index data to obtain the second reference data corresponding to the reference solar cell. The second reference data includes at least one of the following: second open circuit voltage, second short circuit current, second maximum output power, second temperature variance, second open circuit voltage variance, and second maximum output power variance. The first data to be compared is compared with the second data to be compared to obtain the comparison results; Based on the comparison results and preset performance evaluation rules, the on-orbit performance evaluation results of the solar cell under test compared with the control solar cell are obtained.

4. The performance evaluation system according to claim 3, characterized in that, Before the telemetry processing terminal performs index comparison processing based on the first working index data and the second working index data to obtain the on-orbit performance evaluation results of the solar cell under test, it also includes the following working steps: Data filtering is performed based on the received first working indicator data and first indicator threshold information to update or remove the first working indicator data. The threshold in the first indicator threshold information is set based on the ground working indicator data obtained from the ground performance test of the solar cell under test. Data filtering is performed based on the received second working indicator data and second indicator threshold information to update or remove the second working indicator data. The threshold in the second indicator threshold information is set based on the ground working indicator data obtained from the ground performance test of the control solar cell.

5. The performance evaluation system according to claim 2, characterized in that, The space-based experimental terminal includes an experimental board and a sampling module; The experimental plate is used to be installed on the celestial surface of the space-based platform, and is also used to support the solar cell experimental group and the solar cell control group on its own celestial surface, wherein the celestial surface represents the side facing away from the earth and towards the sky. The sampling module establishes electrical connections with the solar cell under test in the solar cell experimental group and the control solar cell in the solar cell control group, respectively, for collecting the first working index data of the solar cell under test and the second working index data of the control solar cell in a first data format.

6. The performance evaluation system according to claim 5, characterized in that, The sampling module includes multiple sampling circuits, which are used to electrically connect to the solar cell under test or the control solar cell. Each sampling circuit includes a positive terminal, a negative terminal, a temperature acquisition unit, a current acquisition unit, a voltage acquisition unit, a load unit, a first switch, and a second switch. One end of the load unit is connected to one of the positive terminal and the negative terminal via the second switch, and the other end of the load unit is connected to the other of the positive terminal and the negative terminal. The fixed resistance value of the load unit is configured to match the resistance value corresponding to the maximum power point of the solar cell under test or the control solar cell. The positive terminal and the negative terminal are also connected through the first switch, the current acquisition unit is connected in series with the pass terminal of the first switch, and the voltage acquisition unit is connected in parallel with the first switch; The positive terminal and the negative terminal are used to connect the solar cell under test or the control solar cell. The temperature acquisition unit is located near the positive electrode contact and / or the negative electrode contact, and is used to detect the temperature of the solar cell under test or the control solar cell connected by the positive electrode contact and the negative electrode contact. The first switch and the second switch respectively receive on / off control signals, causing the sampling circuit to switch between multiple circuit states, including at least two of the open circuit state, the short circuit state, and the load power supply state. The current acquisition unit is used to acquire the current under each circuit state, including the short-circuit current under the short-circuit state and / or the power supply current under the load power supply state. The voltage acquisition unit is used to acquire the voltage under each circuit state, including the open circuit voltage under the open circuit state and / or the power supply voltage under the load power supply state.

7. The performance evaluation system according to claim 1, characterized in that, The solar cell experimental group includes n groups of the solar cells to be tested, and the solar cell control group includes n groups of the control solar cells, where n is a natural number greater than or equal to 1; and / or, The solar cell under test is composed of a number of individual cells connected in series or parallel; and / or, The control solar cell is composed of a number of individual cells connected in series or in parallel.

8. The performance evaluation system according to any one of claims 1 to 7, characterized in that, The space-based platform includes an on-board processing system; The space-based experimental terminal is also used to establish a communication connection with the on-board processing system and send the first working index data and the second working index data to the on-board processing system, so that the on-board processing system performs data transmission processing on the first working index data and the second working index data; The telemetry processing terminal is also used to establish a communication connection with the on-board processing system to receive the first working index data and the second working index data transmitted by the on-board processing system.

9. A method for evaluating the performance of a solar cell, characterized in that, Including the following steps: S1: Receive the first working index data of the solar cell under test in the solar cell experimental group and the second working index data of the control solar cell in the solar cell control group sent by the space-based platform, wherein the control solar cell is a solar cell that has completed performance evaluation. S2: Perform index comparison processing based on the first working index data and the second working index data to obtain the on-orbit performance evaluation results of the solar cell under test.

10. The performance evaluation method according to claim 9, characterized in that, The battery indicators represented by the first working indicator data and the second working indicator data are of the same type. The battery indicators include at least one of the following: temperature, short-circuit current, open-circuit voltage, power supply current and power supply voltage under load power supply conditions, and status flag data corresponding to circuit conditions. Step S2 includes: Data recording and / or calculation processing are performed based on the first working index data to obtain the first reference data corresponding to the solar cell under test. The first reference data includes at least one of the following: first open circuit voltage, first short circuit current, first maximum output power, first temperature variance, first open circuit voltage variance, and first maximum output power variance. Data recording and / or calculation processing are performed based on the second working index data to obtain the second reference data corresponding to the reference solar cell. The second reference data includes at least one of the following: second open circuit voltage, second short circuit current, second maximum output power, second temperature variance, second open circuit voltage variance, and second maximum output power variance. The first data to be compared is compared with the second data to be compared to obtain the comparison results; Based on the comparison results and preset performance evaluation rules, the on-orbit performance evaluation results of the solar cell under test compared with the control solar cell are obtained.

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