CN216819804U

CN216819804U - Photovoltaic module testing arrangement

Info

Publication number: CN216819804U
Application number: CN202122189730.9U
Authority: CN
Inventors: 王晓瓯; 杨勇洲; 马晓龙; 姚方刚; 张月; 才让曲珍; 洛桑; 侯雯文; 张万辉; 王瑜
Original assignee: Yellow River Hydropower Photovoltaic Industry Technology Co ltd; Qinghai Huanghe Hydropower Development Co Ltd; Huanghe Hydropower Development Co Ltd; Photovoltaic Industry Technology Branch of Qinghai Huanghe Hydropower Development Co Ltd
Current assignee: Yellow River Hydropower Photovoltaic Industry Technology Co ltd; Qinghai Huanghe Hydropower Development Co Ltd; Huanghe Hydropower Development Co Ltd; Photovoltaic Industry Technology Branch of Qinghai Huanghe Hydropower Development Co Ltd
Priority date: 2021-09-10
Filing date: 2021-09-10
Publication date: 2022-06-24
Anticipated expiration: 2031-09-10

Abstract

The utility model provides a photovoltaic module testing device, which is used for testing the temperature coefficient of a photovoltaic module and is characterized by comprising the following components: a darkroom, a temperature control box and a light source; the temperature control box and the light source are respectively arranged on two opposite sides of the darkroom, the bottom of the temperature control box is connected with the darkroom through a support, and the temperature control box is used for loading a photovoltaic assembly so as to keep the temperature of the photovoltaic assembly. According to the utility model, the magnetically openable temperature control box controlled by the control center outside the darkroom enables the temperature of the photovoltaic module to be continuous and stable without being interfered by the outside when the photovoltaic module is subjected to temperature coefficient test in the temperature control box.

Description

Photovoltaic module testing arrangement

Technical Field

The utility model relates to the field of photovoltaic testing, in particular to a photovoltaic module testing device.

Background

The power of the photovoltaic module is the ability of the photovoltaic module to convert solar energy into electrical energy, i.e. the power generation ability of the photovoltaic module. The temperature coefficient is a physical property of a material, specifically the rate of change with temperature change. Different materials have different temperature coefficients, and the performances of the materials under different temperature environments are different. The temperature coefficient can visually compare the performance of the material in a high-temperature environment, and the lower the absolute value of the temperature coefficient is, the better the high-temperature resistance performance of the material is. The output power of the photovoltaic module with the same power under the working environment with the same temperature is determined, so that the temperature coefficient test of the photovoltaic module is carried out, the test accuracy is ensured, and the accuracy and the stability of the test result are very necessary to be confirmed.

At present, a side-lighting component power tester is often adopted for testing the temperature coefficient of a photovoltaic component. When the tester is used for power testing, the cabin door needs to be opened and closed frequently in the testing process to enter the darkroom to collect relevant data information of the photovoltaic assembly, and the relevant data information can be read only under the condition of no shielding of the cabin door, so that the temperature difference is inevitably formed between the darkroom area where the photovoltaic assembly is located and the outside of the cabin door, the temperature fluctuation of the assembly is caused, and the stability and the accuracy of the testing data are greatly influenced.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that the stability and the accuracy of test data are influenced due to the opening and closing of a test cabin door in the process of testing the temperature coefficient of the photovoltaic module in the background technology, the utility model adopts the following technical scheme;

a photovoltaic module testing apparatus for testing a temperature coefficient of a photovoltaic module, the photovoltaic module testing apparatus comprising: a darkroom, a temperature control box and a light source;

the temperature control box and the light source are respectively arranged on two opposite sides of the darkroom, the bottom of the temperature control box is connected with the darkroom through a support, and the temperature control box is used for loading a photovoltaic assembly so as to keep the temperature of the photovoltaic assembly.

The temperature control box comprises a cover plate part and an installation part; the apron with the magnetic path has been cup jointed respectively in the handing-over department of installation department, the apron with the installation department all includes the metal frame and by the high printing opacity glass of metal frame encapsulation.

Wherein, the installation department high printing opacity glass's upper portion is equipped with a plurality of fresh air inlets that run through that are used for the air inlet, run through the fresh air inlet with temperature control device intercommunication, the installation department high printing opacity glass's lower part is equipped with a plurality of exhaust vents that run through that are used for the air-out.

Wherein, still be equipped with mobile device in the darkroom, the support includes first support and second support, mobile device passes through first support with the apron portion is connected, mobile device passes through the second support with the installation department is connected.

Further, the mounting portion further comprises a mounting bracket; the one end of installing support with the installation department high printing opacity glass fixed connection, the other end of installing support buckle in order with photovoltaic module supports and leans on, thereby it is right photovoltaic module carries out spacing fixed.

Further, the installation department still includes the support column, the one end of support column is fixed in the installation department in the high printing opacity glass, the other end terminal surface of support column supports and leans on photovoltaic module's back.

Furthermore, the support column is provided with a mounting interface and a data acquisition monitoring device; the mounting interface is electrically connected with the positive electrode and the negative electrode of the photovoltaic module through connecting wires, and the data acquisition monitoring device is used for acquiring the test data of the photovoltaic module through the supporting column.

Further, the mounting support is provided with a hollow structure for accelerating the temperature conduction of the photovoltaic module.

Has the advantages that: according to the utility model, the temperature control box capable of being opened and closed magnetically and controlled by the control center outside the darkroom enables the temperature of the photovoltaic module to be continuous and stable without being interfered by the outside when the photovoltaic module is subjected to temperature coefficient test in the temperature control box.

Drawings

Fig. 1 is a schematic cross-sectional view of a photovoltaic module testing apparatus according to an embodiment of the present invention, in which a temperature control device inside a dark room and a control center outside the dark room are omitted;

FIG. 2 is a schematic view of a temperature control box according to an embodiment of the present invention, partially in cross section, with a glass door omitted;

fig. 3 is a schematic view of an overall device connection structure of a photovoltaic module testing apparatus according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

It will be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the patent and to simplify the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be constructed in a particular manner of operation, and are not to be considered limiting of the patent.

Fig. 1 is a schematic cross-sectional view of a photovoltaic module testing apparatus according to an embodiment of the present invention, in which a temperature control device inside a darkroom and a control center outside the darkroom are omitted.

Referring to fig. 1 and fig. 3 together, the utility model is placed in a dark room 2 with a hard frame structure, the temperature control box 3 of the dark room 2 is a soft dark room 21 which can be opened and closed, and the rest part is a dark room 22 with a hard frame structure. A light source 1 controlled by a control center 5 is arranged at one side in a darkroom 2, and a temperature control box 3 connected with a temperature control device 6 is arranged at the other side. The temperature control box 3 is connected with the moving device 4 through a bracket 31 arranged at the lower part of the temperature control box. The control center 5 is arranged outside the darkroom 2, and the temperature control box 3, the moving device 4, the light source 1, the temperature control device 6 and other equipment in the darkroom 2 are respectively and electrically connected with the control center 5 through connecting wires embedded in the darkroom 2.

Fig. 2 is a schematic structural view of the temperature control box 3 provided according to the embodiment of the present invention, partially cut away in whole section, in which a glass door is omitted.

Referring to fig. 2, the temperature control box 3 is a rectangular box as a whole, and is divided into two parts, i.e., a cover plate 32 and a mounting portion 33. Wherein, the side opposite to the light source 1 in the darkroom 2 is provided with a high light-transmitting glass 35 packaged by metal, and the bottom of each part is opposite to the ground and is fixedly connected with the bracket 31. The joint of the two parts of the mounting part 33 and the cover plate part 32 is fixedly sleeved with the magnetic block 34. The bracket at the lower part of the cover plate part 32 is a first bracket 311 which is close to the light source 1 and movably connected with the mobile device 4. The bracket at the lower part of the mounting part 33 is a second bracket 312, which is far away from the light source 1 and fixed on the mobile device 4. Under the action of the moving device 4, the two parts are separated and combined. The moving means 4 includes, but is not limited to, a slider, a hydraulic lever, etc. Two side surfaces vertical to the light source 1 are provided with glass plate doors which can rotate and can be opened and closed at one side. When the photovoltaic module 8 is installed, the glass plate doors on the two sides are opened. After the two parts of the temperature control box 3 are combined, the glass plate doors on the two sides are closed, so that the temperature control box 3 with a rectangular structure is formed.

Specifically, the outside of the temperature control box 3 is divided into left and right portions. The cover plate 32 is located on the side close to the light source 1, and the mounting portion 33 is located on the side away from the light source 1. The middle parts of the cover plate part 32 and the mounting part 33 are both rectangular high-light-transmission glass 35 packaged by a metal outer frame 36, wherein, the two sides of the high-light-transmission glass 35 at the mounting part 33 are both provided with glass plate doors which rotate around the side and are opened and closed on one side. Magnetic blocks 34 are provided at the end of the joint between the mounting portion 33 and the cover plate portion 32, along the entire length of the end surfaces, and are fitted to each other. Each magnetic block 34 has magnetism, after respective ports of the mounting portion 33 and the cover plate portion 32 abut against each other, the mounting portion 33 and the cover plate portion 32 are fixed in a magnetic attraction mode, the glass plate door is fixed on two corresponding sides of a metal frame, which is used for packaging high-light-transmission glass 35, of the mounting portion 33 through bolts, and therefore a complete box body structure is formed.

Referring to fig. 2, L-shaped plate-shaped mounting brackets 38 are fixedly provided at both ends of the back plate of the temperature control box 3. The mounting bracket 38 is divided into two parts, namely a base 381 and a top cover 382, which are axisymmetrical with the supporting column 39 as an axis, wherein the sides of the base 381 and the top cover 382 connected with the back plate are both hollow plates. The high-transparency glass 35 in the mounting part 33 is provided with a plurality of linearly arranged through air inlet holes 351 at one side far away from the ground, and a hot air pipe is arranged in the through air inlet holes; the surface of one side close to the ground is provided with a plurality of through air outlet holes 352 for ventilation. Wherein, one end of the hot air pipe is connected with the temperature control device 6, and the other end is connected with the temperature control box 3. Under the condition that the temperature control box 3 is closed, the temperature in the temperature control box 3 is increased according to the data interval fed back by the data acquisition and monitoring device 7 in the temperature control box 3 by an experimenter so as to meet the requirement of testing the temperature coefficient of the photovoltaic module 8. The temperature control device 6 includes, but is not limited to, a hot air blower and the like.

Referring to fig. 2, the photovoltaic module 8 mounting bracket 38 is pushed into the temperature control box 3 from the side in a direction perpendicular to the light source 1, and is restrained between the mounting bracket and the support column 39. The front surface of the photovoltaic module 8 is opposite to the light source 1, and the positive and negative ports of the back surface are connected with the mounting interface 37 on the supporting column 39 through connecting wires. In this embodiment, the mounting interface 37 includes an electrical connection interface such as a socket and a USB interface. The supporting column 39 is disposed through the middle of the high transparent glass 35 in the mounting portion 33, and a connecting line is wound inside the supporting column. In addition, a data acquisition monitoring device 7 is arranged inside the supporting column 39 and is electrically connected with the control center 5 through a connecting wire. In the testing process, the data acquisition monitoring device 7 monitors the temperature inside the temperature control box 3 in real time and feeds the temperature back to the control center 5, and in addition, electrical performance data information of the photovoltaic module 8 under different stable conditions is collected.

The specific implementation process comprises the following steps:

the utility model will be described in greater detail below with respect to the use of an alternative embodiment in which the mounting interface 37 is a socket and the temperature control device 6 is a heat gun.

In the test process, an experimenter enters the soft darkroom 21 through the soft curtain to connect the photovoltaic module 8 with the fixed frame and push the photovoltaic module into the mounting bracket 38. The positive and negative interfaces on the back of the photovoltaic module 8 are respectively connected into the sockets 37 on the surface of the support column 39. After the photovoltaic module 8 is installed, the glass panel door at the installation portion 33 is closed. The laboratory staff exits the darkroom 2 and closes the soft curtain, and then controls the temperature control box 3 to be closed through the control center 5. After the temperature control box 3 is closed, the control center 5 controls the hot air blower 6 to blow hot air with the same temperature as the temperature of the test point into the temperature control box 3. And when the data acquisition monitoring device 7 in the temperature control box 3 monitors that the temperature in the temperature control box 3 reaches the test point, stabilizing the input of the temperature control device 6. Meanwhile, the light source 1 is controlled to be started, the data acquisition monitoring device 7 acquires electrical property parameter information of the photovoltaic module 8 after the darkroom 2 is started, and after a certain time, an experimenter turns off the light source 1 through the control center 5 and enters the darkroom 2 to record the electrical property information data information related to the photovoltaic module 8. After the recording is completed, the laboratory staff exits the dark room 2 and controls the light source 1 to be closed. And inputting hot air at the temperature of the next test point by the temperature control device 6, repeating the test process until electrical property data of the photovoltaic modules 8 at the temperature of all the test points are obtained, and calculating corresponding temperature coefficients of the photovoltaic modules 8 according to the electrical property data.

In summary, the temperature control box which is controlled by the control center outside the darkroom and can be opened and closed magnetically enables the temperature of the photovoltaic module to be continuous and stable when the photovoltaic module is subjected to temperature coefficient test in the temperature control box, and the temperature of the photovoltaic module is not interfered by the outside. Furthermore, the temperature control device adopts a hot air heating mode, so that the photovoltaic module is prevented from interfering the test result due to the heating mode in the temperature test process.

The foregoing description has described certain embodiments of this invention. Other embodiments are within the scope of the following claims.

The terms "exemplary," "example," and the like, as used throughout this specification, mean "serving as an example, instance, or illustration," and do not mean "preferred" or "advantageous" over other embodiments. The detailed description includes specific details for the purpose of providing an understanding of the described technology. However, the techniques may be practiced without these specific details. In some instances, well-known structures and devices are shown in block diagram form in order to avoid obscuring the concepts of the described embodiments.

Alternative embodiments of the present invention are described in detail with reference to the drawings, however, the embodiments of the present invention are not limited to the specific details in the above embodiments, and within the technical idea of the embodiments of the present invention, many simple modifications may be made to the technical solution of the embodiments of the present invention, and these simple modifications all belong to the protection scope of the embodiments of the present invention.

The previous description of the disclosure is provided to enable any person skilled in the art to make or use the disclosure. Various modifications to the disclosure will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other variations without departing from the scope of the disclosure. Thus, the description is not intended to be limited to the examples and designs described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A photovoltaic module testing device for testing a temperature coefficient of a photovoltaic module, the photovoltaic module testing device comprising: a darkroom (2), a temperature control box (3) and a light source (1);

the temperature control box (3) and the light source (1) are respectively arranged on two opposite sides of the darkroom (2), the bottom of the temperature control box (3) is connected with the darkroom (2) through a support (31), and the temperature control box (3) is used for loading a photovoltaic assembly (8) so as to keep the temperature of the photovoltaic assembly (8).

2. The photovoltaic module testing apparatus according to claim 1, wherein the temperature controlled box (3) comprises a cover plate portion (32) and a mounting portion (33); apron portion (32) with magnetic path (34) have been cup jointed respectively to the handing-over department of installation department (33), apron portion (32) with installation department (33) all include metal frame (36) and by high printing opacity glass (35) of metal frame (36) encapsulation.

3. The photovoltaic module testing apparatus according to claim 2, wherein the mounting portion (33) further comprises a mounting bracket (38); the one end of installing support (38) with installation department (33) high printing opacity glass (35) fixed connection, the other end of installing support (38) buckle in order with photovoltaic module (8) support by, thereby it is right photovoltaic module (8) carry out spacing fixed.

4. The photovoltaic module testing device according to claim 3, wherein the mounting portion (33) further comprises a supporting column (39), one end of the supporting column (39) is fixed in the high-transmittance glass (35) of the mounting portion (33), and the other end face of the supporting column (39) abuts against the back face of the photovoltaic module (8).

5. The photovoltaic module testing device according to claim 4, wherein the supporting column (39) is provided with a mounting interface (37) and a data acquisition monitoring device (7); the mounting interface (37) is electrically connected with the positive electrode and the negative electrode of the photovoltaic module (8) through connecting wires, and the data acquisition monitoring device (7) is used for acquiring test data of the photovoltaic module (8) through the supporting column (39).

6. The photovoltaic module testing device according to claim 3, wherein the mounting bracket (38) is provided with a hollowed structure for accelerating the temperature conduction of the photovoltaic module (8).

7. The photovoltaic module testing device according to claim 2, wherein the upper portion of the high transparent glass (35) of the mounting portion (33) is provided with a plurality of through air inlet holes (351) for air inlet, the through air inlet holes (351) are communicated with the temperature control device (6), and the lower portion of the high transparent glass (35) of the mounting portion (33) is provided with a plurality of through air outlet holes (352) for air outlet.

8. The photovoltaic module testing device according to claim 7, wherein a moving device (4) is further arranged in the dark room (2), the bracket (31) comprises a first bracket and a second bracket, the moving device (4) is connected with the cover plate portion (32) through the first bracket, and the moving device (4) is connected with the mounting portion (33) through the second bracket.