Photovoltaic module load testing device

Abstract

The utility model discloses a photovoltaic module load testing device, which relates to the technical field of quality verification of photovoltaic modules and comprises a bin body, a mounting plate, comprehensive ballast cylinders, a pressure sensor and a pressure sensor. The output end of the full ballast air cylinder faces downwards and is fixedly connected with the ballast plate, the multiple single-point ballast air cylinders are evenly and fixedly arranged between the two ends of the mounting plate, and the supporting frame is located in the bin body and arranged below the mounting plate. The whole upper surface of the photovoltaic module to be tested can be ballasted through the comprehensive ballasting air cylinder and the ballasting plate, high-precision comprehensive load testing is achieved, no gap exists in ballasting of the photovoltaic module, and no testing error exists; when a single-point load test needs to be carried out on the photovoltaic module, the single-point ballast cylinder can be utilized to pass through the through hole of the ballast plate to carry out the load test on a point position, which needs to be measured, of the photovoltaic module.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic component quality verification, in particular to a photovoltaic component load testing device. Background Art

[0002] In the quality verification procedure of photovoltaic modules, load testing is an essential verification link. The purpose of load testing is to determine the ability of the module to withstand load, which is crucial to the reliability, power attenuation and service life of the module outdoors.

[0003] Existing photovoltaic module load testing equipment generally uses a cylinder to drive a ballast to perform static load testing on the surface of photovoltaic modules, which has the following problems:

[0004] 1. When the stroke of the cylinder is insufficient, it is generally necessary to adjust the height of the photovoltaic module bracket upwards, which makes the adjustment inconvenient and affects the test efficiency.

[0005] 2. The test equipment is generally equipped with multiple cylinders, which can perform single-point load tests on photovoltaic modules. When a comprehensive load test is required on the photovoltaic modules, multiple cylinders are used for synchronous ballasting. However, there are gaps between the cylinders, which makes it impossible to generate loads at some positions of the photovoltaic modules. Therefore, there is a certain error in the comprehensive load test.

[0006] 3. When photovoltaic modules are in a high temperature application scenario, the load capacity of the photovoltaic modules will decrease. Existing testing equipment generally tests photovoltaic modules at room temperature and does not consider load testing issues in high temperature application scenarios.

[0007] In view of this, how to provide a photovoltaic module load testing device that can fully or partially solve the above-mentioned technical problems is a technical problem that people in this field urgently need to solve. Utility Model Content

[0008] The utility model aims to provide a photovoltaic module load testing device to solve the problems existing in the prior art.

[0009] To achieve the above purpose, the utility model provides the following solution: The utility model provides a photovoltaic module load testing device, including:

[0010] A warehouse body, wherein the warehouse body has a sealed door that can be opened and closed;

[0011] A mounting plate, the mounting plate being horizontally disposed in the bin body and close to the top surface of the bin body;

[0012] A full ballast cylinder, wherein the full ballast cylinder is fixedly arranged at both ends of the mounting plate, and the output end of the full ballast cylinder faces downward and is fixedly connected to the ballast plate;

[0013] Single-point ballast cylinder, there are multiple single-point ballast cylinders, and the multiple single-point ballast cylinders are evenly and fixedly arranged between the two ends of the mounting plate, and the ballast plate is provided with a through hole corresponding to the single-point ballast cylinder, and the output end of the single-point ballast cylinder can pass through the through hole from top to bottom;

[0014] A support frame is located in the warehouse body and is arranged below the mounting plate.

[0015] Furthermore, a first pressure sensor is provided between the ballast plate and the output end of the full-surface ballast cylinder.

[0016] Furthermore, a suction cup is provided at the output end of the single-point ballast cylinder, and a second pressure sensor is provided between the output end of the single-point ballast cylinder and the suction cup.

[0017] Furthermore, it also includes:

[0018] A stroke cylinder, wherein the mounting plate is provided with mounting holes through the upper and lower surfaces corresponding to the single-point ballast cylinder, the stroke cylinder is fixedly connected to the top surface of the warehouse body, and its output end passes through the mounting hole and is fixedly connected to the single-point ballast cylinder.

[0019] Furthermore, a rubber buffer plate is provided between the output end of the stroke cylinder and the single-point ballast cylinder.

[0020] Furthermore, the end of the stroke cylinder passes through the top surface of the warehouse body and extends to the outside.

[0021] Furthermore, it also includes:

[0022] An electric heating component, the electric heating component is fixedly arranged on the inner wall of the bin body, and the electric heating component is spaced apart from the ballast plate;

[0023] A temperature sensor, wherein the temperature sensor is disposed in the bin;

[0024] A controller is located outside the warehouse body and is electrically connected to the temperature sensor and the electric heating component.

[0025] Furthermore, the sealed door is provided with heat-insulating glass.

[0026] The utility model discloses the following technical effects:

[0027] 1. The present application can ballast the entire upper surface of the photovoltaic module to be tested through a full ballasting cylinder and a ballast plate, thereby achieving a high-precision full load test, with no gaps in the ballasting of the photovoltaic module and no errors in the test; when a single-point load test is required on the photovoltaic module, a single-point ballasting cylinder can be used to pass through the through hole of the ballast plate to perform a load test on the point where the photovoltaic module needs to be measured, and the full load test and the single-point load test do not interfere with each other.

[0028] 2. A stroke cylinder is added on the basis of the single-point ballast cylinder. When the stroke of the single-point ballast cylinder is insufficient, the height of the single-point ballast cylinder can be lowered by the stroke cylinder. The adjustment is simple and convenient, and there is no need to adjust the height of the photovoltaic module bracket upward, thereby improving the test efficiency. At the same time, the ballast force of the stroke cylinder and the single-point ballast cylinder can be superimposed, which can increase the ultimate load acting on the photovoltaic module.

[0029] 3. An electric heating component is installed inside the warehouse. Combined with the temperature sensor and controller, the internal temperature of the warehouse can be changed to simulate the high-temperature application environment of the photovoltaic components. This allows load testing of the photovoltaic components under high-temperature conditions, and the test conditions are closer to the actual usage scenario. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0032] Figure 2 It is a schematic diagram of the external structure;

[0033] Figure 3 This is a schematic diagram of the structure of Example 2;

[0034] Among them, 1. warehouse body; 2. sealing door; 3. mounting plate; 4. full ballast cylinder; 5. single point ballast cylinder; 6. ballast plate; 601, through hole; 7. support frame; 8. suction cup; 9. travel cylinder; 10. electric heating component; 11. insulation glass. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0037] Example 1

[0038] Reference Figure 1-Figure 2 The utility model provides a photovoltaic module load test device, comprising: a warehouse body 1, which is made of stainless steel, with an insulation layer arranged inside the warehouse body 1, and a seal door 2 which can be opened and closed is opened on one side of the warehouse body 1; a mounting plate 3 is horizontally arranged inside the warehouse body 1 and close to the top surface of the warehouse body 1, and both ends of the mounting plate 3 are fixed on the inner wall of the warehouse body 1; there are four full-ballast cylinders 4, which are respectively fixed at four corners on both sides of the mounting plate 3, and the output end of the full-ballast cylinder 4 faces downward and is fixedly connected to the ballast plate 6; there are multiple single-point ballast cylinders 5, and multiple single-point ballast cylinders 5 are evenly and fixedly arranged on the mounting plate 3 and located on the inner side of the four full-ballast cylinders 4, and the ballast plate 6 is provided with a through hole 601 corresponding to the single-point ballast cylinder 5, and the output end of the single-point ballast cylinder 5 can pass through the through hole 601 from top to bottom;

[0039] The support frame 7 is located in the warehouse body 1 and is arranged below the mounting plate 3 for fixing the photovoltaic module to be tested.

[0040] In this embodiment, a first pressure sensor is provided between the ballast plate 6 and the output end of the full ballast cylinder 4. A suction cup 8 is provided at the output end of the single-point ballast cylinder 5, and a second pressure sensor is provided between the output end of the single-point ballast cylinder 5 and the suction cup 8. The suction cup 8 can transfer the ballast force to the surface of the photovoltaic module more evenly.

[0041] In this embodiment, it also includes: a stroke cylinder 9, which can be of the same model as the single-point ballast cylinder 5. The mounting plate 3 has mounting holes on the upper and lower surfaces corresponding to the single-point ballast cylinder 5. The stroke cylinder 9 is fixedly connected to the top surface of the warehouse body 1, and its output end passes through the mounting hole and is fixedly connected to the single-point ballast cylinder 5. A rubber buffer plate is provided between the output end of the stroke cylinder 9 and the single-point ballast cylinder 5 to prevent the ballast force of the stroke cylinder 9 from damaging the outer shell of the single-point ballast cylinder 5.

[0042] In this embodiment, it also includes: an electric heating component 10, which is fixedly arranged on the inner wall of the warehouse body 1, and the electric heating component 10 is spaced apart from the ballast plate 6; a temperature sensor, which is arranged in the warehouse body 1; and a controller, which is located outside the warehouse body 1, and is electrically connected to the temperature sensor and the electric heating component 10. The temperature sensor can monitor the internal temperature of the warehouse body 1 and feed back to the controller, and the controller adjusts the power of the heating component according to the feedback temperature, so that the internal temperature of the warehouse body 1 is always maintained within the preset temperature range. The sealing door 2 is provided with an insulating glass 11, and the operator can observe the load test of the photovoltaic module through the insulating glass 11.

[0043] The load test process of the photovoltaic module is specifically described below in conjunction with Example 1:

[0044] 1. Comprehensive load test

[0045] The photovoltaic module to be tested is fixed on the support frame 7, and the sealing door 2 is closed. The motor heating component is started to heat the interior of the warehouse body 1. When the temperature sensor detects that the temperature inside the warehouse body 1 reaches the preset temperature, the controller controls the electric heating component 10 to maintain the current output power to form a constant temperature test environment.

[0046] The full ballast cylinder 4 is started, and the full ballast cylinder 4 presses down the ballast plate 6. The ballast plate 6 applies a load to the entire upper surface of the photovoltaic module. According to the test requirements, the ballast force is adjusted to perform a load test.

[0047] 2. Single point load test

[0048] When a load test is required on a certain point of the photovoltaic component to be tested, the single-point ballast cylinder 5 corresponding to the point is determined, the single-point ballast cylinder 5 is started, the cylinder output end moves downward, driving the suction cup 8 through the through hole 601, and finally applying a load to a single point of the photovoltaic component. According to the test requirements, the ballast force is adjusted to perform the load test.

[0049] Example 2

[0050] like Figure 3 As shown, the difference between this embodiment and embodiment 1 is that the end of the stroke cylinder 9 passes through the top surface of the bin body 1 and extends to the outside.

[0051] When the stroke cylinder 9 and the single-point ballast cylinder 5 are simultaneously arranged in the up and down directions in the warehouse body 1, the overall height of the two is relatively high. In order to reduce the manufacturing cost of the warehouse body 1, in this embodiment, the upper end of the stroke cylinder 9 extends out from the top surface of the warehouse body 1, and the stroke cylinder 9 still remains fixedly connected to the top surface of the warehouse body 1. The overall function is maintained, but the height requirement of the warehouse body 1 can be greatly reduced.

[0052] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0053] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A photovoltaic module load testing device, characterized in that: include: A warehouse body (1), wherein the warehouse body (1) has a sealing door (2) that can be opened and closed; A mounting plate (3), the mounting plate (3) being horizontally arranged inside the warehouse body (1) and close to the top surface of the warehouse body (1); A full-ballast cylinder (4), wherein the full-ballast cylinder (4) is fixedly arranged at both ends of the mounting plate (3), and the output end of the full-ballast cylinder (4) faces downward and is fixedly connected to the ballast plate (6); A single-point ballast cylinder (5), wherein there are a plurality of the single-point ballast cylinders (5), and the plurality of the single-point ballast cylinders (5) are evenly and fixedly arranged between the two ends of the mounting plate (3); the ballast plate (6) is provided with a through hole (601) corresponding to the single-point ballast cylinder (5), and the output end of the single-point ballast cylinder (5) can pass through the through hole (601) from top to bottom; A support frame (7), the support frame (7) is located in the warehouse body (1) and is arranged below the mounting plate (3).

2. A photovoltaic module load testing device according to claim 1, characterized in that: A first pressure sensor is provided between the ballast plate (6) and the output end of the full-surface ballast cylinder (4).

3. A photovoltaic module load testing device according to claim 1, characterized in that: The output end of the single-point ballast cylinder (5) is provided with a suction cup (8), and a second pressure sensor is provided between the output end of the single-point ballast cylinder (5) and the suction cup (8).

4. A photovoltaic module load testing device according to claim 1, characterized in that: Also includes: A stroke cylinder (9), the mounting plate (3) is provided with mounting holes through the upper and lower surfaces corresponding to the single-point ballast cylinder (5), the stroke cylinder (9) is fixedly connected to the top surface of the warehouse body (1), and its output end passes through the mounting hole and is fixedly connected to the single-point ballast cylinder (5).

5. A photovoltaic module load testing device according to claim 4, characterized in that: A rubber buffer plate is provided between the output end of the stroke cylinder (9) and the single-point ballast cylinder (5).

6. A photovoltaic module load testing device according to claim 4, characterized in that: The end of the stroke cylinder (9) passes through the top surface of the bin body (1) and extends to the outside.

7. A photovoltaic module load testing device according to claim 1, characterized in that: Also includes: An electric heating component (10), the electric heating component (10) being fixedly arranged on the inner wall of the bin body (1), and the electric heating component (10) being spaced apart from the ballast plate (6); A temperature sensor, the temperature sensor being arranged in the warehouse body (1); A controller is located outside the warehouse body (1), and the controller is electrically connected to the temperature sensor and the electric heating component (10).

8. A photovoltaic module load testing device according to claim 1, characterized in that: The sealed door (2) is provided with heat-insulating glass (11).

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