Photovoltaic inverter aging device

Abstract

The utility model provides a photovoltaic inverter aging device, which comprises a test cabinet body, a test space is arranged in the test cabinet body, a ventilation slot is arranged at the bottom of the test cabinet body, and ventilation openings are arranged at four sides of the bottom of the test cabinet body and at four sides of the ventilation slot. According to the technical scheme of the utility model, the machine bases inside the three rows of first test units and the three rows of second test units are distributed and installed in the test space in the staggered array manner. The up-and-down circulating airflow and the left-and-right circulating airflow generated by starting the convection heat dissipation assembly in the test space can be conveyed from a gap formed by staggered installation of machine bases in the three rows of first test units and the three rows of second test units, so that uniform conveying of the airflow in the test space can be effectively improved; the fan heat dissipation blind area in the photovoltaic inverter aging test cabinet is effectively reduced, and the heat dissipation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a photovoltaic inverter aging device, belonging to the field of photovoltaic inverter aging test equipment. Background Art

[0002] The aging test of photovoltaic inverters is to evaluate their reliability and performance stability during long-term use. The photovoltaic inverter aging test cabinet is a test equipment specially used to simulate and evaluate the performance and reliability of photovoltaic inverters during long-term use. It can provide the function of controlling environmental conditions and electrical loads to accelerate the aging process, thereby achieving the effect of long-term use in a shorter time.

[0003] In the prior art, a cooling fan is installed on the side of the photovoltaic inverter aging test cabinet to ventilate and dissipate heat inside the cabinet. However, during the test of the inverters inside the photovoltaic inverter aging test cabinet, they are arranged from left to right. However, the airflow blown by the cooling fan is in a straight line, so that the cooling fan can only produce a good cooling effect on the inverter at the nearest position, while the blocked side of the inverter cannot be protected by ventilation and heat dissipation, which increases the fan heat dissipation blind area and reduces the heat dissipation efficiency inside the photovoltaic inverter aging test cabinet.

[0004] In summary, the present invention provides a photovoltaic inverter aging device to solve the above problems. Utility Model Content

[0005] In view of the deficiencies in the prior art, the present invention aims to provide a photovoltaic inverter aging device to solve the problem of fan heat dissipation blind spots inside the test cabinet proposed in the above background technology.

[0006] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical solutions: a photovoltaic inverter aging device, comprising a test cabinet, a test space is opened inside the test cabinet, a ventilation slot is opened at the bottom of the test cabinet, and ventilation holes are opened on the four sides of the bottom of the test cabinet and on the four sides of the ventilation slot. The top, bottom and two sides of the inner wall of the test cabinet and the interior of the test space are penetrated by convection heat dissipation components, three rows of first test units are evenly fixedly connected from top to bottom on the back side of the inner wall of the test cabinet and the interior of the test space, and second test units are fixedly connected on the back side of the inner wall of the test cabinet and below each row of first test units, and the front of the test cabinet is hinged with two doors by hinges, and transparent glass plates are embedded between the front and back sides of the two doors.

[0007] Furthermore, the transparent glass plate is fixedly connected to the door, and the bottom of the ventilation slot is open.

[0008] Furthermore, the bottom of each vent is open, and each vent is connected to the ventilation slot.

[0009] Furthermore, each row of the first test units is composed of three machine bases, and each row of the second test units is composed of two machine bases.

[0010] Furthermore, the base inside the second testing unit is located between two adjacent bases inside the first testing unit.

[0011] Furthermore, the convection heat dissipation assembly includes a mounting ring, which passes through one side of the test cabinet and is located on one side of the inner wall of the test space. The inner ring surface of the mounting ring is evenly fixed with multiple connecting rods around the center of the circle, and a fixing seat is fixedly connected between the adjacent ends of the three connecting rods. A dust filter is fixedly connected between the opposite sides of each two adjacent connecting rods and between the surface of the fixing seat and the inner ring surface of the mounting ring. An electric fan is fixedly installed on one side of the fixing seat and inside the mounting ring.

[0012] Furthermore, both ends of the mounting ring are open, and the dust filter is fixedly connected to the fixing seat and the mounting ring.

[0013] Beneficial effects of the utility model:

[0014] By distributing the bases inside the three rows of first test units and the three rows of second test units in a staggered array in the test space, the up-and-down circulating airflow and the left-and-right circulating airflow generated by starting the convection heat dissipation components inside the test space can be transported through the gaps formed when the bases inside the three rows of first test units and the three rows of second test units are staggered, thereby effectively improving the uniform delivery of airflow inside the test space, effectively reducing the fan heat dissipation blind area inside the photovoltaic inverter aging test cabinet, and improving the heat dissipation efficiency.

[0015] When the internal fan blades of the convection heat dissipation component installed on the top of the test space are working, they blow air toward the inside of the test space. The convection heat dissipation component installed at the bottom of the test space draws out the hot air inside the test space and transports it to the inside of the ventilation slot. When the internal fan blades of the convection heat dissipation component installed on the right side of the test space are working, they blow air toward the inside of the test space. When the internal fan blades of the convection heat dissipation component installed on the left side of the test space are working, the hot air inside the test space can be drawn out from the side of the test cabinet, so that the test space inside the test cabinet forms an up and down circulation ventilation and heat dissipation, and a left and right circulation ventilation and heat dissipation. The airflow transported up and down generates convection with the airflow transported left and right, thereby accelerating the air flow rate inside the test space, which can effectively improve the heat dissipation effect inside the photovoltaic inverter aging test cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Other features, objects and advantages of the present invention will become more apparent from the detailed description of the non-limiting embodiments with reference to the following drawings:

[0017] Figure 1 This is a schematic structural perspective diagram of a photovoltaic inverter aging device according to the present invention;

[0018] Figure 2 This is a schematic main cross-sectional view of the structure of a photovoltaic inverter aging device according to the present invention;

[0019] Figure 3 for Figure 2 A schematic side view of the structure of the magnetic coil shown;

[0020] Figure 4 This is a schematic top view of the structure of a photovoltaic inverter aging device of the present invention.

[0021] In the figure: 1. Test cabinet; 2. Test space; 3. Ventilation slot; 4. Ventilation port; 5. First test unit; 6. Second test unit; 7. Convection heat dissipation component; 8. Box door; 9. Transparent glass plate; 71. Mounting ring; 72. Connecting rod; 73. Fixing seat; 74. Dust filter; 75. Electric fan. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] See also Figure 1-4The utility model provides a technical solution: a photovoltaic inverter aging device, comprising a test cabinet 1, a test space 2 is opened inside the test cabinet 1, a ventilation slot 3 is opened at the bottom of the test cabinet 1, and ventilation holes 4 are opened on the four sides of the bottom of the test cabinet 1 and on the four sides of the ventilation slot 3. Convection heat dissipation components 7 are passed through the top, bottom and both sides of the inner wall of the test cabinet 1 and located inside the test space 2. Three rows of first test units 5 are evenly fixedly connected from top to bottom on the back side of the inner wall of the test cabinet 1 and located inside the test space 2. Second test units 6 are fixedly connected on the back side of the inner wall of the test cabinet 1 and located below each row of first test units 5. Two doors 8 are hingedly connected to the front of the test cabinet 1 by hinges, and transparent glass plates 9 are embedded between the front and back sides of the two doors 8. The internal fan blades of the convection heat dissipation component 7 installed at the top of the test space 2 blow air toward the inside of the test space 2 when working, and the internal fan blades of the convection heat dissipation component 7 installed at the bottom of the test space 2 blow air toward the inside of the ventilation slot 3 when working, so that In order to extract the hot air inside the test space 2 and transport it to the inside of the ventilation slot 3, the internal fan blades of the convection heat dissipation component 7 installed on the right side of the test space 2 blow toward the inside of the test space 2 when working, and the internal fan blades of the convection heat dissipation component 7 installed on the left side of the test space 2 can extract the hot air inside the test space 2 from the side of the test cabinet 1 when working, so that the test space 2 inside the test cabinet 1 forms an up and down circulation ventilation and heat dissipation, and a left and right circulation ventilation and heat dissipation, and the air flow transported up and down and the air flow transported left and right generate convection, thereby accelerating the air flow rate inside the test space 2, and then improving the heat dissipation effect, the transparent glass plate 9 is fixedly connected to the box door 8, and the photovoltaic inverter aging test condition in the test space 2 inside the test cabinet 1 can be directly penetrated through the transparent glass plate 9, and the two box doors 8 are fixedly connected to the side close to the front with a handle, the bottom of the ventilation slot 3 is open, and the bottom of each vent 4 is open, and each vent 4 is connected to the ventilation slot 3, and the hot air inside the ventilation slot 3 can be dispersed and discharged through the four vents 4.

[0024] See also Figure 1-3Each row of the first test unit 5 is composed of three machine bases, and each row of the second test unit 6 is composed of two machine bases. The machine bases inside the first test unit 5 and the second test unit 6 are both photovoltaic inverter aging test bases, which can test the aging of the photovoltaic inverter. The machine base inside the second test unit 6 is located between the bottom of the two adjacent machine bases inside the first test unit 5. The machine bases inside the three rows of first test units 5 and the three rows of second test units 6 are installed in the test space 2 in a staggered array, so that the up and down circulating airflow and the left and right circulating airflow generated by starting the convection heat dissipation component 7 inside the test space 2 can be transported from the gaps formed when the machine bases inside the three rows of first test units 5 and the three rows of second test units 6 are staggered. This can effectively improve the uniform delivery of airflow inside the test space 2, effectively reduce the fan heat dissipation blind area inside the photovoltaic inverter aging test cabinet, and improve the heat dissipation efficiency.

[0025] See also Figure 2-3 The convection heat dissipation component 7 includes a mounting ring 71, which passes through one side of the test cabinet 1 and is located on one side of the inner wall of the test space 2. A plurality of connecting rods 72 are evenly fixedly connected to the inner ring surface of the mounting ring 71 around the center of the circle. A fixing seat 73 is fixedly connected between the proximal ends of the three connecting rods 72. A dust filter 74 is fixedly connected between the opposite sides of every two adjacent connecting rods 72 and between the surface of the fixing seat 73 and the inner ring surface of the mounting ring 71. An electric fan 75 is fixedly installed on one side of the fixing seat 73 and inside the mounting ring 71. The electric fan 75 is connected to an external power supply and is provided with a power control switch. The dust filter 74 can ensure that the two ends of the mounting ring 71 are connected and the dust in the air is filtered during the normal air delivery process, thereby reducing the dust accumulation inside the test cabinet 1. Both ends of the mounting ring 71 are open, and the dust filter 74 is fixedly connected to the fixing seat 73 and the mounting ring 71.

[0026] Specific implementation method: By starting the electric fan 75 inside the convection heat dissipation component 7 installed on the four sides of the test space 2, the internal fan blades of the convection heat dissipation component 7 installed on the top of the test space 2 blow toward the inside of the test space 2 when working, and the internal fan blades of the convection heat dissipation component 7 installed at the bottom of the test space 2 blow toward the inside of the ventilation slot 3 when working, so that the hot air inside the test space 2 can be extracted and transported to the inside of the ventilation slot 3, and the hot air inside the ventilation slot 3 can be discharged in a dispersed manner through the four vents 4, and the internal fan blades of the convection heat dissipation component 7 installed on the right side of the test space 2 blow toward the inside of the test space 2 when working, and the internal fan blades of the convection heat dissipation component 7 installed on the left side of the test space 2 can extract the hot air inside the test space 2 from the side of the test cabinet 1 when working, so that the test space 2 inside the test cabinet 1 forms an up and down circulation ventilation and heat dissipation, and a left and right circulation ventilation and heat dissipation, and the airflow transported up and down and the airflow transported left and right generate convection, thereby accelerating the air flow rate inside the test space 2, and effectively improving the internal heat dissipation effect of the photovoltaic inverter aging test cabinet.

[0027] Since the base inside the second test unit 6 is located between the bottom of the two adjacent bases inside the first test unit 5, the bases inside the three rows of first test units 5 and the three rows of second test units 6 are installed in a staggered array in the test space 2, so that the up and down circulating airflow and the left and right circulating airflow generated by starting the convection heat dissipation component 7 inside the test space 2 can be transported from the gaps formed when the bases inside the three rows of first test units 5 and the three rows of second test units 6 are staggered, thereby effectively improving the uniform delivery of airflow inside the test space 2, effectively reducing the fan heat dissipation blind area inside the photovoltaic inverter aging test cabinet, and improving the heat dissipation efficiency.

[0028] The aging test conditions of the photovoltaic inverter in the test space 2 inside the test cabinet 1 can be directly seen through the transparent glass plate 9, which effectively improves the convenience of observing the aging test work of the photovoltaic inverter.

[0029] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A photovoltaic inverter aging device, comprising a test cabinet (1), characterized in that: The test cabinet (1) has a test space (2) formed inside, a ventilation slot (3) formed at the bottom of the test cabinet (1), and ventilation openings (4) formed on the four sides of the bottom of the test cabinet (1) and located on the four sides of the ventilation slot (3). Convection heat dissipation components (7) are passed through the top, bottom and both sides of the inner wall of the test cabinet (1) and located inside the test space (2). Three rows of first test units (5) are evenly fixedly connected from top to bottom on the back of the inner wall of the test cabinet (1) and located inside the test space (2). Second test units (6) are fixedly connected on the back of the inner wall of the test cabinet (1) and located below each row of first test units (5). The front of the test cabinet (1) is hinged with two doors (8), and transparent glass plates (9) are embedded between the front and back of the two doors (8).

2. The photovoltaic inverter aging device according to claim 1, characterized in that: The transparent glass plate (9) is fixedly connected to the box door (8), and the bottom of the ventilation slot (3) is open.

3. The photovoltaic inverter aging device according to claim 1, characterized in that: The bottom of each ventilation opening (4) is open, and each ventilation opening (4) is connected to the ventilation slot (3).

4. The photovoltaic inverter aging device according to claim 1, characterized in that: Each row of the first test machine group (5) is composed of three machine bases, and each row of the second test machine group (6) is composed of two machine bases.

5. The photovoltaic inverter aging device according to claim 4, characterized in that: The base inside the second test unit (6) is located between the lower parts of two adjacent bases inside the first test unit (5).

6. The photovoltaic inverter aging device according to claim 1, characterized in that: The convection heat dissipation assembly (7) comprises a mounting ring (71), the mounting ring (71) passes through one side of the test cabinet (1) and is located on one side of the inner wall of the test space (2); a plurality of connecting rods (72) are evenly fixedly connected to the inner ring surface of the mounting ring (71) around the center of the circle; a fixing seat (73) is fixedly connected between adjacent ends of the three connecting rods (72); a dust filter (74) is fixedly connected between opposite sides of each two adjacent connecting rods (72) and between the surface of the fixing seat (73) and the inner ring surface of the mounting ring (71); and an electric fan (75) is fixedly installed on one side of the fixing seat (73) and inside the mounting ring (71).

7. The photovoltaic inverter aging device according to claim 6, characterized in that: Both ends of the mounting ring (71) are open, and the dust filter (74) is fixedly connected to the fixing seat (73) and the mounting ring (71).

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