CN111446924A - Power testing method and system for special-shaped solar cell modules - Google Patents

Abstract

The invention relates to the technical field of solar cells, in particular to a power test method and a power test system for a special-shaped solar cell module, wherein the method comprises the steps of obtaining the measured power of the special-shaped solar cell module and a planar solar cell module corresponding to a plurality of light incidence angles; calculating to obtain the average measured power of the special-shaped solar cell module and the planar solar cell module; acquiring the measured power of the special-shaped solar cell module and the planar solar cell module corresponding to the preset light incidence angle; calculating the converted power by using the average measured power of the planar solar cell module, the corresponding special-shaped solar cell module under the preset light incidence angle and the measured power of the planar solar cell module; calculating a power attenuation coefficient; and calculating the actual power of the special-shaped solar cell module by using the power attenuation coefficient. The method realizes the correction of the measured power of the special-shaped solar cell module and improves the accuracy of the measured power.

Description

Power testing method and system for special-shaped solar cell modules

technical field

The invention relates to the technical field of solar cells, in particular to a power testing method and system for a special-shaped solar cell assembly.

Background technique

With the continuous development of science and technology, the demand for energy is increasing, and energy depletion has become increasingly prominent, and new energy has become a global research hotspot. Photovoltaic power generation has become the most popular green energy because it has no environmental pollution and is inexhaustible.

Among them, the most important part in solar power generation is the solar cell module, which is used to convert solar energy into electrical energy. Therefore, the I-V characteristic of the solar cell module is particularly important, and the I-V characteristic of the solar cell module needs to be tested before it leaves the factory to calibrate the power of the solar cell module.

In the prior art, I-V testing equipment is generally used to test the I-V characteristics of solar cell modules. When testing, the I-V testing equipment simulates sunlight irradiating the solar cell modules to obtain an I-V characteristic curve. However, since the I-V test equipment is based on the area of the direct point of sunlight on the surface of the solar cell module. Therefore, the existing I-V test equipment can realize the accurate measurement of the power of the planar solar cell module; while for some special-shaped solar cell modules (the special-shaped is the special-shaped in the space concept such as the curved shape, not the special-shaped in the flat concept) ), since the projected area of these special-shaped solar cell modules along the incident direction of sunlight is smaller than the actual area of the special-shaped solar cell modules, the accuracy of the power tested by the existing I-V test equipment is low.

SUMMARY OF THE INVENTION

In view of this, an embodiment of the present invention provides a power testing system for a special-shaped solar cell assembly, so as to solve the problem of low accuracy of the power of the special-shaped solar cell assembly tested in the prior art.

An embodiment of the present invention provides a power testing method for a special-shaped solar cell assembly, including:

Obtain the measured power of the corresponding special-shaped solar cell modules under multiple light incident angles;

Obtaining the measured power of the corresponding planar solar cell assemblies under multiple incident angles of light; wherein, the special-shaped solar cell assemblies and the planar solar cell assemblies have the same materials and areas;

calculating the measured power of the special-shaped solar cell assemblies corresponding to the plurality of light incident angles to obtain the average measured power of the special-shaped solar cell assemblies;

calculating an average value of the measured powers of the planar solar cell assemblies corresponding to the plurality of light incident angles to obtain the average measured power of the planar solar cell assemblies;

acquiring the measured power of the special-shaped solar cell assembly corresponding to the preset light incident angle and the measured power of the flat solar cell assembly corresponding to the preset light incident angle;

Using the average measured power of the flat solar cell assembly, the measured power of the special-shaped solar cell assembly corresponding to the preset light incident angle, and the measurement of the flat solar cell assembly corresponding to the preset light incident angle power, calculate the converted power;

Dividing the average measured power of the special-shaped solar cell assembly and the converted power to obtain the power attenuation coefficient of the special-shaped solar cell assembly;

The actual power of the special-shaped solar cell assembly is obtained by multiplying the measured power of the special-shaped solar cell assembly corresponding to the preset light incident angle by the power attenuation coefficient.

The power testing method of the special-shaped solar cell module provided by the embodiment of the present invention, through the calculated power attenuation coefficient, realizes the correction to the reduction of the measured power caused by the projection area of the special-shaped solar cell module being smaller than the actual area, thereby improving the measured power. The power accuracy of the obtained special-shaped solar modules.

In combination with the first aspect, in the first embodiment of the first aspect, the converted power is calculated by the following formula:

Wherein, c' is the converted power; b' is the average measured power of the planar solar cell assembly; a is the measured power of the special-shaped solar cell assembly corresponding to the preset light incident angle; b is the The measured power of the planar solar cell assembly corresponding to the preset light incident angle.

According to a second aspect, an embodiment of the present invention also provides a power testing device for a special-shaped solar cell assembly, including:

a first acquisition module, configured to acquire the measured power of the corresponding special-shaped solar cell assemblies under multiple incident angles of light;

The second acquisition module is used to acquire the measured power of the planar solar cell assembly corresponding to multiple light incident angles; wherein, the special-shaped solar cell assembly and the planar solar cell assembly have the same materials and areas;

a first calculation module, configured to calculate the measured power of the special-shaped solar cell assembly corresponding to the plurality of light incident angles, so as to obtain the average measured power of the special-shaped solar cell assembly;

a second calculation module, configured to calculate the average value of the measured powers of the planar solar cell assemblies corresponding to the multiple incident angles of light, so as to obtain the average measured power of the planar solar cell assemblies;

a third acquisition module, configured to acquire the measured power of the special-shaped solar cell assembly corresponding to the preset light incident angle and the measured power of the flat solar cell assembly corresponding to the preset light incident angle;

The third calculation module is configured to use the average measured power of the planar solar cell assembly, the measured power of the special-shaped solar cell assembly corresponding to the preset incident angle of light, and the corresponding measured power of the predetermined incident angle of light. Calculate the converted power by calculating the measured power of the planar solar cell module;

a fourth calculation module, configured to divide the average measured power of the special-shaped solar cell assembly by the converted power to obtain a power attenuation coefficient of the special-shaped solar cell assembly;

The fifth calculation module is configured to multiply the power attenuation coefficient by the measured power of the special-shaped solar cell assembly corresponding to the preset light incident angle to obtain the actual power of the special-shaped solar cell assembly.

The power testing device of the special-shaped solar cell module provided by the embodiment of the present invention, through the calculated power attenuation coefficient, realizes the correction to the reduction of the measured power caused by the projection area of the special-shaped solar cell module being smaller than the actual area, thereby improving the measured power. The power accuracy of the obtained special-shaped solar modules.

According to a third aspect, an embodiment of the present invention further provides a data processing device, including: a memory and a processor, the memory and the processor are connected in communication with each other, the memory stores computer instructions, and the The processor executes the power testing method of the special-shaped solar cell assembly described in the first aspect of the present invention or the first embodiment of the first aspect by executing the computer instructions.

According to a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to make the computer execute the first step of the present invention. In one aspect or the first aspect, the power testing method of the special-shaped solar cell assembly described in the first embodiment.

According to a fifth aspect, an embodiment of the present invention further provides a power testing system for a special-shaped solar cell assembly, including:

The data processing device described in the third aspect of the present invention;

a power testing device, which is electrically connected to the data processing device; the power testing device is used to measure the power of the special-shaped solar cell assembly under multiple incident angles of light and the power of the planar solar cell assembly under multiple incident angles of light, and The measurement results are sent to the data processing device.

The power testing system for special-shaped solar cell assemblies provided by the embodiments of the present invention measures the measured powers of special-shaped solar cell assemblies and planar solar cell assemblies under multiple incident angles of light through the power testing equipment; The measured data is processed to correct the measured power of the special-shaped solar cell assembly, and the actual power of the special-shaped solar cell assembly is obtained, thereby improving the power accuracy of the obtained special-shaped solar cell assembly.

With reference to the fifth aspect, in the first embodiment of the fifth aspect, it also includes:

The rotating platform is used for fixing the solar cell assembly and driving the special-shaped solar cell assembly or the flat solar cell assembly to rotate.

In the power testing system for special-shaped solar cell assemblies provided by the embodiments of the present invention, the special-shaped solar cell assemblies or flat solar cell assemblies are fixed on a rotating platform, and the rotation of the rotating platform is used to simulate multiple incident angles of light irradiating thereon, thereby The power test equipment can measure the power of the special-shaped solar cell assembly or the flat solar cell assembly under multiple incident angles of light, which provides a basis for the subsequent calculation of the actual power of the special-shaped solar cell assembly.

With reference to the fifth aspect or the first embodiment of the fifth aspect, in the second embodiment of the fifth aspect, the power test equipment includes:

The light source is fixedly arranged in the power testing equipment, and is used for illuminating the special-shaped solar cell assembly or the flat solar cell assembly.

In the power testing system for special-shaped solar cell assemblies provided by the embodiments of the present invention, the light source is fixed in the power testing equipment, that is, the position of the light source relative to the power testing equipment remains unchanged; when the light source illuminates the solar cell assembly, the rotation of the rotating platform is used. Different light incident angles are simulated, and the size of the light incident angle is adjusted by rotating the platform instead of the power test equipment, which avoids the frequent rotation of the power test equipment and improves the service life of the power test equipment.

Description of drawings

In order to illustrate the specific embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the specific embodiments or the prior art. Obviously, the accompanying drawings in the following description The drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

FIG. 1 shows a flow chart of a power testing method for a special-shaped solar cell assembly in an embodiment of the present invention;

2a to 2d are schematic diagrams showing the relationship between the incident angle of light and the special-shaped solar cell assembly in the embodiment of the present invention;

FIG. 3 shows a schematic structural diagram of a power testing device for a special-shaped solar cell assembly in an embodiment of the present invention;

4 shows a schematic structural diagram of a data processing device in an embodiment of the present invention;

FIG. 5 shows a schematic structural diagram of a power testing system for a special-shaped solar cell assembly in an embodiment of the present invention;

Fig. 6 shows another schematic structural diagram of the power testing system of the special-shaped solar cell assembly in the embodiment of the present invention;

Reference numerals: 10-rotating platform; 20-power testing equipment; 30-data processing equipment; 41-processor; 42-communication bus; 43-communication interface; 44-memory.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present invention.

According to an embodiment of the present invention, an embodiment of a power testing method for a special-shaped solar cell assembly is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. and, although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from that herein.

An embodiment of the present invention provides a power testing method for a special-shaped solar cell assembly, as shown in FIG. 1 , including:

S11 , acquiring the measured powers of the corresponding special-shaped solar cell assemblies under multiple incident angles of light.

Please refer to FIG. 2a to FIG. 2d for a detailed description of multiple incident angles of light. Wherein, the special-shaped solar cell assembly is a hemispherical shape as an example. Figures 2a to 2d show that the special-shaped solar cell assembly rotates clockwise at 0 o'clock with the 0x axis as the rotation axis. During the rotation of the special-shaped solar cell assembly, the light remains unchanged. The incident angle of light in Fig. 2a is defined as 0°, and the incident angle of light is defined as the rotation angle of the special-shaped solar cell module, then with the rotation of the special-shaped solar cell module, the incident angle of light changes. As shown in Figure 2b, the light incident angle is equivalent to the rotation angle β of the special-shaped solar cell module; as shown in Figure 2c, the rotation angle of the special-shaped solar cell module is 90°, and the corresponding light incident angle is 90°; as shown in Figure 2d As shown, the rotation angle of the special-shaped solar cell module is 180°, and the corresponding light incident angle is 180°.

In addition, optionally, the definition of the angle of incidence of light can be that the position of the solar cell assembly (iso-shaped solar cell assembly and the flat solar cell assembly) remains unchanged, and the position of the light changes; The position of the solar cell module and the flat solar cell module) is changed and the light position is changed, and so on. It is only necessary to ensure that the same definition of the incident angle of light is used for the special-shaped solar cell module and the flat solar cell module.

After the definition of the incident angle of light is determined, the measured power of the corresponding special-shaped solar cell modules under multiple incident angles of light can be measured by the power test equipment. Wherein, the multiple light incident angles may be measured every 10° in the range of 0°-180°. For example, the plurality of light incident angles are 0°, 10°, 20°, . . . , 170°, 180°. Specifically, when the light incident angle is 0°, the measured power of the special-shaped solar cell assembly is measured by the power test equipment; when the light incident angle is 10°, the measured power of the special-shaped solar cell assembly is measured by the power test equipment; the light incident angle is 20° °, use the power test equipment to measure the measured power of the special-shaped solar cell module; ...; and so on, until the incident angle of the light is 180°, use the power test equipment to measure the measured power of the special-shaped solar cell module, so as to obtain a plurality of rays The measured power of the corresponding profiled solar cell module at the incident angle. The digital processing device acquires the measured powers of the corresponding special-shaped solar cell modules under multiple incident angles of light, which are used for subsequent determination of the actual power of the special-shaped solar cell modules.

S12, acquiring the measured power of the corresponding planar solar cell modules under multiple incident angles of light.

Wherein, the special-shaped solar cell module and the flat solar cell module have the same materials and area.

2a to 2d only show the incident angle of light for the special-shaped solar cell module, and the definition of the incident angle of light for the flat solar cell module is the same as the definition of the incident angle of light for the special-shaped solar cell module.

For example, the incident angles of light corresponding to the special-shaped solar cell modules are 0°, 10°, 20°, . , 10°, 20°, ..., 170°, 180°. Similarly, use the power test equipment to measure the measured power of the flat solar cell module; when the light incident angle is 10°, use the power test equipment to measure the measured power of the flat solar cell module; when the light incident angle is 20°, use the power test equipment to measure The measured power of the flat solar cell module; ...; and so on, until the light incident angle is 180°, use the power test equipment to measure the measured power of the flat solar cell module, so as to obtain the corresponding flat solar cells under multiple light incident angles Measured power of the component. The digital processing device obtains the measured powers of the corresponding planar solar cell modules under multiple incident angles of light, which are used for subsequent determination of the actual power of the special-shaped solar cell modules.

S13, calculate the measured power of the corresponding special-shaped solar cell modules under multiple incident angles of light, so as to obtain the average measured power of the special-shaped solar cell modules.

The data processing device calculates the average value of the measured power of the corresponding special-shaped solar cell modules under multiple incident angles of light, and obtains the average measured power of the special-shaped solar cell modules.

S14 , calculating the average value of the measured power of the corresponding planar solar cell assemblies under multiple incident angles of light to obtain the average measured power of the planar solar cell assembly.

The data processing device calculates the average value of the measured powers of the corresponding planar solar cell assemblies under multiple incident angles of light, so as to obtain the average measured power of the planar solar cell assemblies.

S15: Obtain the measured power of the special-shaped solar cell assembly corresponding to the preset light incident angle and the measured power of the flat solar cell assembly corresponding to the preset light incident angle.

For the special-shaped solar cell module and the flat solar cell, the preset light incident angle is the same. For example, the measured power of the special-shaped solar cell module with a light incident angle of 45° needs to be corrected, then the corresponding preset light incident angle is 45°; if the measured power of the special-shaped solar cell module with a light incident angle of 60° needs to be corrected, then the corresponding preset light incident angle is 60°. Therefore, the preset light incident angle is the light incident angle corresponding to the measured power of the special-shaped solar cell assembly to be corrected.

The measured power of the corresponding special-shaped solar cell assembly under the preset light incident angle and the measured power of the corresponding flat solar cell assembly under the preset light incident angle are measured by using a power testing device. The data processing device obtains the measured power of the special-shaped solar cell assembly corresponding to the preset light incident angle and the measured power of the planar solar cell assembly corresponding to the preset light incident angle, which are used for subsequent determination of the actual power of the special-shaped solar cell assembly.

S16: Calculate the converted power by using the average measured power of the planar solar cell assembly, the measured power of the special-shaped solar cell assembly corresponding to the preset light incident angle, and the measured power of the planar solar cell assembly corresponding to the preset light incident angle.

When the data processing equipment calculates the converted power, considering the test error caused by the power test equipment, the converted power can be calculated by the following formula:

c' is the converted power; b' is the average measured power of the planar solar cell assembly; a is the measured power of the special-shaped solar cell assembly corresponding to the preset light incident angle; b is the preset light incident The measured power of the planar solar cell module corresponding to the angle; ΔC is the coefficient corresponding to the test error, which can be specifically set according to the actual situation, and is not limited here.

As an optional implementation of this embodiment, the following formula can also be used to calculate the converted power:

S17: Divide the average measured power of the special-shaped solar cell module and the converted power to obtain the power attenuation coefficient of the special-shaped solar cell module.

Specifically, the following formula can be used to calculate the power attenuation coefficient of the special-shaped solar cell assembly:

Wherein, a' is the average measured power of the special-shaped solar cell assembly; α is the power attenuation coefficient of the special-shaped solar cell assembly; c' is the converted power.

S18 , multiply the measured power of the special-shaped solar cell assembly corresponding to the preset light incident angle by the power attenuation coefficient to obtain the actual power of the special-shaped solar cell assembly.

The data processing equipment multiplies the measured power of the special-shaped solar cell module corresponding to the preset light incident angle obtained in S15 and the power attenuation coefficient calculated in S17 to obtain the actual power of the special-shaped solar cell module. The actual power of the special-shaped solar cell assembly is the actual power of the measured power of the corresponding special-shaped solar cell assembly under the preset light incident angle.

The power testing method of the special-shaped solar cell module provided in this embodiment, through the calculated power attenuation coefficient, realizes the correction to the reduction of the measured power caused by the projected area of the special-shaped solar cell module being smaller than the actual area, thereby improving the measured power. The power accuracy of the profiled solar modules.

This embodiment also provides a power testing device for a special-shaped solar cell assembly, which is used to implement the above embodiments and preferred implementations, and what has been described will not be repeated. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. Although the apparatus described in the following embodiments is preferably implemented in software, implementations in hardware, or a combination of software and hardware, are also possible and contemplated.

This embodiment provides a power testing device for a special-shaped solar cell assembly, as shown in FIG. 3 , including:

The first acquisition module 31 is configured to acquire the measured power of the corresponding special-shaped solar cell assemblies under multiple incident angles of light.

The second acquisition module 32 is configured to acquire the measured power of the corresponding planar solar cell assemblies under multiple incident angles of light; wherein the special-shaped solar cell assemblies and the planar solar cell assemblies have the same materials and areas.

The first calculation module 33 is configured to calculate the measured power of the special-shaped solar cell assemblies corresponding to the plurality of light incident angles, so as to obtain the average measured power of the special-shaped solar cell assemblies.

The second calculation module 34 is configured to calculate the average value of the measured powers of the planar solar cell assemblies corresponding to the multiple incident angles of light, so as to obtain the average measured power of the planar solar cell assemblies.

The third acquisition module 35 is configured to acquire the measured power of the special-shaped solar cell assembly corresponding to the preset light incident angle and the measured power of the flat solar cell assembly corresponding to the preset light incident angle.

The third calculation module 36 is configured to use the average measured power of the planar solar cell assembly, the measured power of the special-shaped solar cell assembly corresponding to the preset incident angle of light, and the corresponding measured power of the predetermined incident angle of light. The measured power of the planar solar cell assembly is calculated as the converted power.

The fourth calculation module 37 is configured to divide the average measured power of the special-shaped solar cell assembly by the converted power to obtain the power attenuation coefficient of the special-shaped solar cell assembly.

The fifth calculation module 38 is configured to multiply the measured power of the special-shaped solar cell assembly corresponding to the preset light incident angle by the power attenuation coefficient to obtain the actual power of the special-shaped solar cell assembly.

The power testing device of the special-shaped solar cell module provided by the embodiment of the present invention, through the calculated power attenuation coefficient, realizes the correction to the reduction of the measured power caused by the projection area of the special-shaped solar cell module being smaller than the actual area, thereby improving the measured power. The power accuracy of the obtained special-shaped solar modules.

The power testing device for the special-shaped solar cell assembly in this embodiment is presented in the form of functional units, where the units refer to ASIC circuits, processors and memories that execute one or more software or fixed programs, and/or other devices that can A device that provides the above functions.

Further functional descriptions of the above-mentioned modules are the same as those of the above-mentioned corresponding embodiments, and are not repeated here.

An embodiment of the present invention further provides a data processing device, which has the power testing device for the special-shaped solar cell assembly shown in FIG. 3 .

Please refer to FIG. 4. FIG. 4 is a schematic structural diagram of a data processing device provided by an optional embodiment of the present invention. As shown in FIG. 4, the data processing device may include: at least one processor 41, such as a CPU (Central Processing Unit, central processing unit), at least one communication interface 43, memory 44, at least one communication bus 42. Among them, the communication bus 42 is used to realize the connection and communication between these components. The communication interface 43 may include a display screen (Display) and a keyboard (Keyboard), and the optional communication interface 43 may also include a standard wired interface and a wireless interface. The memory 44 may be a high-speed RAM memory (Random Access Memory, volatile random access memory), or may be a non-volatile memory (non-volatile memory), such as at least one disk memory. The memory 44 can optionally also be at least one storage device located away from the aforementioned processor 41 . The processor 41 may be combined with the device described in FIG. 3 , the memory 44 stores application programs, and the processor 41 calls the program codes stored in the memory 44 for executing any of the above method steps.

The communication bus 42 may be a peripheral component interconnect (PCI for short) bus or an extended industry standard architecture (EISA for short) bus or the like. The communication bus 42 can be divided into an address bus, a data bus, a control bus, and the like. For ease of presentation, only one thick line is used in FIG. 4, but it does not mean that there is only one bus or one type of bus.

The memory 44 may include volatile memory (English: volatile memory), such as random-access memory (English: random-access memory, abbreviation: RAM); the memory may also include non-volatile memory (English: non-volatile memory) memory), such as flash memory (English: flash memory), hard disk (English: hard diskdrive, abbreviation: HDD) or solid-state drive (English: solid-state drive, abbreviation: SSD); the memory 44 may also include the above-mentioned types of memory The combination.

The processor 41 may be a central processing unit (English: central processing unit, abbreviation: CPU), a network processor (English: network processor, abbreviation: NP), or a combination of CPU and NP.

The processor 41 may further include a hardware chip. The above-mentioned hardware chip may be an application-specific integrated circuit (English: application-specific integrated circuit, abbreviation: ASIC), a programmable logic device (English: programmable logic device, abbreviation: PLD) or a combination thereof. The above-mentioned PLD may be a complex programmable logic device (English: complex programmable logic device, abbreviation: CPLD), a field programmable gate array (English: field-programmable gate array, abbreviation: FPGA), a general array logic (English: generic arraylogic , abbreviation: GAL) or any combination thereof.

Optionally, memory 44 is also used to store program instructions. The processor 41 may invoke program instructions to implement the power testing method for the special-shaped solar cell assembly shown in the embodiment of FIG. 1 of the present application.

Embodiments of the present invention further provide a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and the computer-executable instructions can execute the power testing method for a special-shaped solar cell assembly in the above method embodiments. Wherein, the storage medium may be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM), a random access memory (Random Access Memory, RAM), a flash memory (Flash Memory), a hard disk (Hard) Disk Drive, abbreviation: HDD) or solid-state drive (Solid-State Drive, SSD), etc.; the storage medium may also include a combination of the above-mentioned types of memories.

An embodiment of the present invention also provides a power testing system for a special-shaped solar cell assembly, as shown in FIG. 5 , including a power testing device 20 and a data processing device 30 .

The power testing device 20 is used to measure the measured power of the special-shaped solar cell assembly under multiple incident angles of light and the measured power of the planar solar cell assembly under multiple incident angles of light. Among them, the solar cell module includes special-shaped solar cell modules and flat solar cell modules with the same material and area. When the power testing device 20 performs the measurement, the measurement may be performed only by using the power testing device 20 itself, or the power testing device 20 may perform the measurement in cooperation with other devices. There are no restrictions on the power measurement methods of the special-shaped solar cell modules and the flat solar cell modules under multiple incident angles of light, and it is only necessary to ensure that the special-shaped solar cell modules and the flat solar cell modules use the same power measurement method for multiple The measurement of the measurement power at the incident angle of the light is sufficient.

Referring to FIG. 5 , the data processing device 30 is electrically connected to the power testing device 20 . For the specific details of the data processing device 30 , please refer to the detailed description of the embodiment shown in FIG. 4 , which will not be repeated here.

Specifically, since the power testing device 20 performs the test based on the direct area of the light on the solar cell module (ie, the projected area along the incident direction of the light), for the special-shaped solar cell module, the projection along the incident direction of the light The area is smaller than the actual area of the special-shaped solar cell module facing the light incident direction. Therefore, the measured power of the special-shaped solar cell assembly measured by the power testing apparatus 20 is smaller than the actual power of the special-shaped solar cell assembly.

The power testing system for special-shaped solar cell assemblies provided by the embodiments of the present invention measures the measured powers of special-shaped solar cell assemblies and planar solar cell assemblies under multiple incident angles of light through the power testing equipment; The measured data is processed to correct the measured power of the special-shaped solar cell assembly, and the actual power of the special-shaped solar cell assembly is obtained, thereby improving the power accuracy of the obtained special-shaped solar cell assembly.

As an optional implementation of this embodiment, as shown in FIG. 6 , a power testing system for a special-shaped solar cell assembly includes a rotating platform 10 , a power testing device 20 and a data processing device 30 .

The rotating platform 10 is used for fixing the special-shaped solar cell components and the flat solar cell components, and driving the rotation of the special-shaped solar cell components and the flat solar cell components. During power measurement, the special-shaped solar cell assembly and the flat solar cell assembly can be fixed on the rotating platform 10 respectively. The rotation of the rotating platform 10 drives the rotation of the special-shaped solar cell assembly or the flat solar cell assembly fixed thereon.

Please refer to Fig. 2a to Fig. 2b, when the light is irradiated on the special-shaped solar cell module, due to the rotation of the special-shaped solar cell module, the incident angle of the light irradiated on the special-shaped solar cell module will change, so that the subsequent power testing equipment 20 is The measured power of the special-shaped solar cell modules under different light incident angles can be measured; similarly, when the light shines on the flat solar cell modules, due to the rotation of the flat solar cell modules, the light irradiated on the flat solar cell modules will be incident. The angle changes, so that the subsequent power testing equipment 20 can measure the measured power of the planar solar cell module under different light incident angles.

Specifically, the special-shaped solar cell assembly is fixed on the rotating platform 10, and the rotating platform 10 drives the special-shaped solar cell assembly to rotate, for example, the rotation angle is 0-180°; The measured power of the corresponding special-shaped solar cell modules under each light incident angle; the measurement method of the measured power of the corresponding flat solar cell modules under multiple light incident angles is the same as the measured power of the corresponding special-shaped solar cell modules under multiple light incident angles .

A light source is fixed in the power testing device 20, and the light source is used to illuminate the special-shaped solar cell assembly or the flat solar cell assembly on the rotating platform 10, so that the special-shaped solar cell assembly or the flat solar cell assembly performs energy conversion, thereby generating current or voltage, generating The current or voltage is measured by the power testing equipment 20, and the measured power of the special-shaped solar cell assembly or the flat solar cell assembly can be obtained.

In this test system, the light source is fixed in the power test equipment 20, that is, the position of the light source relative to the power test equipment 20 remains unchanged; the rotation of the rotating platform 10 is used to simulate different light incident angles, and the rotating platform 10 is used instead of the power test. The device 20 adjusts the incident angle, which avoids frequent rotation of the power testing device 20 and increases the service life of the power testing device 20 .

Although the embodiments of the present invention have been described with reference to the accompanying drawings, various modifications and variations can be made by those skilled in the art without departing from the spirit and scope of the present invention, and such modifications and variations fall within the scope of the appended claims within the limits of the requirements.

Claims (8)

1. A power test method of a special-shaped solar cell module is characterized by comprising the following steps:

acquiring the measurement power of the corresponding special-shaped solar cell module under a plurality of light incidence angles;

acquiring the measurement power of the corresponding planar solar cell module under a plurality of light incidence angles; the special-shaped solar cell module and the planar solar cell module are made of the same material and have the same area;

calculating the measured power of the special-shaped solar cell module corresponding to the plurality of light incidence angles to obtain the average measured power of the special-shaped solar cell module;

calculating the average value of the measured power of the corresponding planar solar cell module under the plurality of light incidence angles to obtain the average measured power of the planar solar cell module;

acquiring the measurement power of the special-shaped solar cell module corresponding to a preset light incidence angle and the measurement power of the planar solar cell module corresponding to the preset light incidence angle;

calculating a converted power by using the average measured power of the planar solar cell module, the measured power of the special-shaped solar cell module corresponding to the preset light incidence angle and the measured power of the planar solar cell module corresponding to the preset light incidence angle;

dividing the average measured power of the special-shaped solar cell module by the converted power to obtain a power attenuation coefficient of the special-shaped solar cell module;

and multiplying the measured power of the special-shaped solar cell module corresponding to the preset light incidence angle by the power attenuation coefficient to obtain the actual power of the special-shaped solar cell module.

2. The method of claim 1, wherein the reduced power is calculated using the formula:

wherein c' is the converted power; b' is the average measured power of the planar solar cell module; a is the measured power of the special-shaped solar cell module corresponding to the preset light incidence angle; and b is the measured power of the corresponding planar solar cell module under the preset light incidence angle.

3. The utility model provides a power testing arrangement of dysmorphism solar module which characterized in that includes:

the first acquisition module is used for acquiring the measurement power of the corresponding special-shaped solar cell module under a plurality of light incidence angles;

the second acquisition module is used for acquiring the measurement power of the corresponding planar solar cell module under a plurality of light incidence angles; the special-shaped solar cell module and the planar solar cell module are made of the same material and have the same area;

the first calculation module is used for calculating the measured power of the special-shaped solar cell module corresponding to the plurality of light incidence angles so as to obtain the average measured power of the special-shaped solar cell module;

the second calculation module is used for calculating the average value of the measurement power of the corresponding planar solar cell module under the plurality of light incidence angles so as to obtain the average measurement power of the planar solar cell module;

the third acquisition module is used for acquiring the measurement power of the special-shaped solar cell module corresponding to a preset light incidence angle and the measurement power of the planar solar cell module corresponding to the preset light incidence angle;

the third calculation module is used for calculating the converted power by utilizing the average measured power of the planar solar cell module, the measured power of the special-shaped solar cell module corresponding to the preset light incidence angle and the measured power of the planar solar cell module corresponding to the preset light incidence angle;

the fourth calculation module is used for dividing the average measured power of the special-shaped solar cell module by the converted power to obtain the power attenuation coefficient of the special-shaped solar cell module;

and the fifth calculation module is used for multiplying the measured power of the special-shaped solar cell module corresponding to the preset light incidence angle by the power attenuation coefficient to obtain the actual power of the special-shaped solar cell module.

4. A data processing apparatus, characterized by comprising: a memory and a processor, wherein the memory and the processor are communicatively connected with each other, the memory stores computer instructions, and the processor executes the computer instructions to execute the power testing method of the specially-shaped solar cell module according to claim 1 or 2.

5. A computer-readable storage medium storing computer instructions for causing a computer to perform the method for power testing of an irregular shaped solar cell module according to claim 1 or 2.

6. A power test system of a special-shaped solar cell module is characterized by comprising:

a data processing apparatus as claimed in claim 4;

the power test equipment is electrically connected with the data processing equipment; the power test equipment is used for measuring the power of the special-shaped solar cell module under a plurality of light incidence angles and the power of the planar solar cell module under a plurality of light incidence angles, and sending the measurement result to the data processing equipment.

7. The system of claim 6, further comprising:

and the rotating platform is used for fixing the solar cell module and driving the special-shaped solar cell module or the planar solar cell module to rotate.

8. The system of claim 6 or 7, wherein the power test device comprises:

and the light source is fixedly arranged in the power test equipment and is used for irradiating the special-shaped solar cell module or the planar solar cell module.

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