Photovoltaic inverter heating point detection device

Abstract

The utility model discloses a photovoltaic inverter heating point detection device which comprises a connecting base installed on a bottom plate of an inverter, an installing support vertically fixed on the connecting base and temperature detection units arranged on the installing support in an array mode, the installing support covers the outer wall of the inverter, a fan is installed on the installing support, and the temperature detection units are arranged on the installing support. The temperature detection unit and the fan are electrically connected with the solar cell panel. The array type temperature detection units are matched with the heat dissipation structure, so that the effects of accurately detecting the temperature of the inverter shell and effectively cooling the inverter shell are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of inverter heating detection, in particular to a photovoltaic inverter heating point detection device. Background Art

[0002] Detecting hot spots in photovoltaic inverters is crucial for ensuring the inverter's safety and long-term reliability. As a core component in a photovoltaic power generation system, the inverter is installed alongside the solar panels and is responsible for converting the direct current (DC) generated by the panels into AC suitable for use in the power grid. The electronic components within the inverter generate heat during operation. If not properly managed, overheating can lead to the following problems: 1. High temperatures can degrade the performance of the electronic components within the inverter, such as reducing the efficiency of power semiconductors. 2. Overheating can cause the inverter to automatically reduce its load for protection, thereby reducing output power. 3. Prolonged exposure to high temperatures accelerates the aging of electronic components, shortening the inverter's service life. Summary of the Invention

[0003] The technical problem to be solved by the present invention is the lack of detecting the temperature of the inverter and cooling it according to the detection situation.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a photovoltaic inverter hot spot detection device, including a connecting base installed on the base plate of the inverter, a mounting bracket vertically fixed on the connecting base and a temperature detection unit arranged in an array on the mounting bracket, the mounting bracket covers the outer wall of the inverter, and a fan is installed on the mounting bracket. The temperature detection unit and the fan are electrically connected to the solar panel.

[0005] Preferably, the temperature detection unit includes a support rod fixedly connected to the mounting bracket and a detection disk connected in series to the support rod, a thermistor is arranged in the detection disk, the bottom of the detection disk is attached to the outer wall of the inverter, the support rods are equidistantly distributed on the mounting bracket, power supply lines for thermistors are arranged in the support rods, and the power supply lines in each support rod are arranged in parallel, and a detection light is connected to the power supply line.

[0006] Preferably, a connecting frame is equidistantly connected to the support rod, and the detection plate is fixedly connected to the movable end of the connecting frame.

[0007] Preferably, an annular connecting ring is coaxially fixedly connected to the edge of the detection disk, and the connecting ring is attached to the outer wall of the inverter.

[0008] Preferably, fins are fixedly provided horizontally on the side walls of the connecting ring, and the fins are equidistantly arranged in the vertical direction.

[0009] Preferably, a connection hole adapted to a fixing hole of the base of the inverter is provided on the connection base, and the connection base is connected to the base of the inverter via fixing bolts.

[0010] 1. The utility model provides a photovoltaic inverter hot spot detection device. A mounting bracket is installed on the inverter, and the temperature of the inverter is detected by a temperature detection unit on the mounting bracket. When the temperature of the inverter is too high, the resistance of the thermistor in the temperature detection unit increases, causing the current in the detection circuit to decrease. Then, the controller starts the fan to cool the inverter casing, thereby realizing temperature detection and timely cooling of the inverter.

[0011] 2. The array-type temperature detection units can detect multiple parts of the inverter casing and accurately remind the staff of the heating parts of the inverter. If the inverter is in a high temperature position for a long time, timely maintenance can be carried out. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0013] Figure 1 It is a structural schematic diagram of an embodiment of the present utility model.

[0014] Figure 2 It is the front view of the embodiment of the present utility model.

[0015] Figure 3 Schematic diagram of the structure of the detection disk in the embodiment of the present utility model.

[0016] In the figure: 1. Inverter; 2. Connection base; 3. Mounting bracket; 4. Support rod; 5. Connecting frame; 6. Inspection plate; 7. Connecting ring; 8. Fin plate; 9. Inspection light; 10. Fan; 11. Fixing bolts. DETAILED DESCRIPTION

[0017] like Figure 1-3 As shown, the utility model provides a photovoltaic inverter hot spot detection device, including a connecting base 2 installed on the bottom plate of the inverter 1, a mounting bracket 3 vertically fixed on the connecting base 2 and a temperature detection unit arranged in an array on the mounting bracket 3, the mounting bracket 3 covers the outer wall of the inverter 1, and a fan 10 is installed on the mounting bracket 3, and the temperature detection unit and the fan 10 are electrically connected to the solar panel.

[0018] Inverter 1 is mounted on one side of the solar panel and attached to the inverter's base plate via a connection base 2. After the connection base 2 is secured, the mounting bracket 3 on the mounting base 2 is positioned over the inverter's housing. The temperature detection unit on the mounting bracket 3 is aligned with the outer wall of the inverter 1, conducting heat to the outer wall and thus achieving temperature detection. The array-like distribution of temperature detection units accurately locates hot spots on the inverter 1 and provides prompts. When the inverter's temperature rises, the fan 10 activates to cool the inverter's housing.

[0019] like Figure 1-3 The temperature detection unit includes a support rod 4 fixedly connected to the mounting bracket 3 and a detection disk 6 connected in series to the support rod 4. The detection disk 6 is provided with a thermistor. The bottom of the detection disk 6 is attached to the outer wall of the inverter 1. The support rods 4 are equidistantly distributed on the mounting bracket 3. The support rods 4 are provided with power supply circuits for the thermistors. The power supply circuits in each support rod 4 are arranged in parallel. A detection lamp 9 is connected to the power supply circuits.

[0020] Using solar panels to power the temperature detection unit with direct current can reduce the layout of external lines. By observing the brightness between the detection lights 9, the size of the thermistor in the power supply circuit in each support rod 4 can be determined, and finally the temperature of the inverter 1 casing can be determined, which can provide the staff with more intuitive temperature information of the inverter 1 casing.

[0021] like Figure 2 and Figure 3 As shown, in order to achieve stable installation of the detection plate 6, the support rod 4 is equidistantly connected to the connecting frame 5, and the detection plate 6 is fixedly connected to the movable end of the connecting frame 5. The thermistor is installed in the detection plate 6, and the power supply line is laid in the support rod 4.

[0022] like Figure 3 As shown, in order to increase the coverage of a single detection disk 6, satisfy the detection of the entire housing of the inverter 1 while reducing the number of thermistors and power supply lines, the edge of the detection disk 6 is coaxially fixedly connected to an annular connecting ring 7, which is attached to the outer wall of the inverter 1.

[0023] like Figure 1-3 As shown, fins 8 are fixed horizontally on the side walls of the connecting ring 7, and the fins 8 are arranged equidistantly in the vertical direction. The connecting ring 7 serves as a mounting member for the fins 8, which exchange heat with the inverter 1 housing through the connecting ring 7, enhancing the cooling performance of the fan 10.

[0024] like Figure 2As shown, to facilitate installation and removal of the detection device, the connection base 2 is provided with connection holes that match the fixing holes on the base of the inverter 1. The connection base 2 is connected to the base of the inverter 1 via fixing bolts 11. The connection base 2 is mounted on the inverter 1 using the existing fixing bolts 11, achieving efficient installation of the detection device.

Claims

1. Photovoltaic inverter hot spot detection device, characterized by: The invention comprises a connection base (2) mounted on a bottom plate of an inverter (1), a mounting bracket (3) vertically fixed to the connection base (2), and a temperature detection unit arranged in an array on the mounting bracket (3), wherein the mounting bracket (3) covers the outer wall of the inverter (1), a fan (10) is mounted on the mounting bracket (3), and the temperature detection unit and the fan (10) are both electrically connected to the solar cell panel.

2. The photovoltaic inverter hot spot detection device according to claim 1, characterized in that: The temperature detection unit comprises a support rod (4) fixedly connected to the mounting bracket (3) and a detection disk (6) connected in series to the support rod (4); a thermistor is arranged in the detection disk (6); the bottom of the detection disk (6) is attached to the outer wall of the inverter (1); the support rods (4) are equidistantly distributed on the mounting bracket (3); power supply lines for the thermistors are arranged in the support rods (4), and the power supply lines in each support rod (4) are arranged in parallel, and a detection lamp (9) is connected to the power supply line.

3. The photovoltaic inverter hot spot detection device according to claim 2, characterized in that: The support rod (4) is equidistantly connected to a connecting frame (5), and the detection plate (6) is fixedly connected to the movable end of the connecting frame (5).

4. The photovoltaic inverter hot spot detection device according to claim 2, characterized in that: An annular connecting ring (7) is coaxially fixedly connected to the edge of the detection disk (6), and the connecting ring (7) is attached to the outer wall of the inverter (1).

5. The photovoltaic inverter hot spot detection device according to claim 4, characterized in that: Fin plates (8) are fixedly arranged horizontally on the side walls of the connecting ring (7), and the fin plates (8) are arranged at equal distances in the vertical direction.

6. The photovoltaic inverter hot spot detection device according to claim 1, characterized in that: The connection base (2) is provided with a connection hole that matches the base fixing hole of the inverter (1), and the connection base (2) is connected to the base of the inverter (1) via a fixing bolt (11).

Images