Photovoltaic module device of ground power station

Abstract

The invention relates to a ground power station photovoltaic module device which comprises a support, a photovoltaic module, a water level monitor, an inflation device and a controller, the photovoltaic module is detachably connected with the support through an electric switch structure, the position of the water level monitor is lower than the lowest edge of the photovoltaic module, the inflation device comprises an air bag and an air pump which are fixed to the photovoltaic module, and the controller is connected with the air bag. The air bag is located below the photovoltaic assembly, the air pump is used for inflating the air bag, the controller is electrically connected with the water level monitor, the air pump and the electric switch structure, when the water level monitor detects the water level, the controller controls the air pump and the electric switch structure to be connected with a power source, the air pump inflates the air bag, and the electric switch structure disconnects the photovoltaic assembly from the support. When the water level monitor detects the water level, the air bag floats on the water surface, the photovoltaic module is lifted upwards, and the photovoltaic module is separated from the support, floats on the water surface and is prevented from being soaked by large water, so that the photovoltaic module is well protected to be salvaged and recycled in time, safely and conveniently.

Description

Technical Field

[0001] The present invention relates to the technical field of solar photovoltaic technology, and particularly to a photovoltaic module device for a ground power station. Background Art

[0002] With global warming and environmental deterioration, in recent years, extreme rainstorm weather has occurred frequently, with large amounts of rainfall and long rainfall durations, which are extremely likely to cause flood disasters. Precipitation in many places has also reached extreme levels such as "once in 50 years" or "once in 100 years". The photovoltaic modules of ground power stations are very close to the ground. Once a heavy rainstorm occurs and the surface water cannot be drained in time, the photovoltaic modules will be immersed in water. If immersed for a long time, the modules, inverters and other electrical equipment are very likely to be damaged, and the photovoltaic modules immersed in water are also very likely to be damaged by other floating objects. At present, after the photovoltaic modules are affected by disasters and immersed in water, one can only wait for the water to recede or enter the water to fish out the photovoltaic modules and carry out operations in the disaster area, which poses a great challenge to the safety of personnel. Summary of the Invention

[0003] In order to solve the above problems, the present invention provides a photovoltaic module device for a ground power station to protect the photovoltaic modules when the ground power station is flooded.

[0004] To achieve the above object, the photovoltaic module device for a ground power station provided by the present invention includes a bracket and a photovoltaic module disposed on the bracket, and is characterized in that it further includes a water level monitor, an inflation device and a controller. The photovoltaic module is detachably connected to the bracket through an electric switch structure. The position of the water level monitor is lower than the lowest edge of the photovoltaic module. The inflation device includes an airbag fixed on the photovoltaic module and an air pump. The airbag is below the photovoltaic module, and the air pump is used to inflate the airbag. The controller is electrically connected to the water level monitor, the air pump and the electric switch structure. When the water level monitor detects the water level, the controller controls both the air pump and the electric switch structure to be powered on. The air pump inflates the airbag, and the electric switch structure releases the connection between the photovoltaic module and the bracket.

[0005] The photovoltaic module device for a ground power station provided by the present invention detects the water level below the photovoltaic module through the water level monitor. When the water level monitor detects the water level, both the air pump and the motor of the electric switch structure are powered on. The air pump inflates the airbag, and the electric switch structure releases the connection between the photovoltaic module and the bracket. The airbag floats on the water surface, lifts the photovoltaic module upward, the photovoltaic module separates from the bracket and floats on the water surface, avoiding being soaked by the flood water and being well protected. The photovoltaic module can be fished out in the water flow, and the salvage and recovery are timely, safe and convenient. Brief Description of the Drawings

[0006] Figure 1 It is a schematic structural diagram of the photovoltaic module device for a ground power station; Figure 2 It is a schematic structural diagram of the installation and mating part of a photovoltaic module and a bracket.

[0007] The present invention will be further described in detail below with reference to the accompanying drawings. Specific embodiments

[0008] Refer to Figure 1 , the photovoltaic module device of the ground power station includes a bracket 2 and a photovoltaic module 1 arranged on the bracket. The photovoltaic module 1 is detachably connected to the bracket 2 through an electric switch structure. When the electric switch structure is powered off, the electric switch structure mounts and connects the photovoltaic module 1 to the bracket 2. At this time, the photovoltaic module 1 is firmly connected to the bracket 2, and the electric switch structure is in this state when the photovoltaic module 1 is normally used for power generation. Once a flood occurs and the photovoltaic module 1 is threatened by immersion, the electric switch structure is powered on, and the electric switch structure releases the connection between the photovoltaic module and the bracket. If an upward external force is applied to the photovoltaic module, the photovoltaic module 1 can be separated from the bracket 2. In this embodiment, the electric switch structure is as Figure 2 shown, and includes a support 51, a rotating member, and a motor (not shown in the figure). The support 51 is fixed to the bracket 2 by screws. The rotating member includes an integrally formed rotating shaft 53 and a clamping plate 52. The rotating member is rotatably mounted on the support 51 through the rotating shaft 53. The output shaft of the motor is connected to the rotating shaft 53 for driving the rotating shaft 53 to rotate. A placement groove is provided on the bracket 2, and the placement groove is on one side of the support 51. The photovoltaic module 1 is provided with a support rod 11, and the support rod 11 is placed in the placement groove of the bracket 2 and is supported by the bracket 2. The photovoltaic module can be stably placed on the bracket 2. In this state, if an upward external force is applied to the photovoltaic module, the photovoltaic module 1 can be separated from the bracket 2. Start the motor, the rotating shaft 53 and the clamping plate 52 rotate together, the clamping plate 52 rotates above the support rod 11 and presses on the support rod 11. Turn off the motor, and the clamping plate 52 remains in this state, locking the support rod 11 in the placement groove. In this state, even if the photovoltaic module 1 is subjected to an external force, it is still installed together with the bracket 2 and will not be separated.

[0009] An inflation device is provided on the photovoltaic module 1. The inflation device includes an airbag 3 and an air pump 4. Both the airbag 3 and the air pump 4 are below the photovoltaic module 1. The air pump 4 is used to inflate the airbag 3. The airbag 3 has a one-way valve, and the air pumped by the air pump 4 enters the airbag 3 through the one-way valve, and the gas filled in the airbag 3 will not escape. When the photovoltaic module is not immersed and is in normal use, the airbag 3 is in an uninflated state. When the photovoltaic module is threatened by immersion, the air pump 4 is started to inflate the airbag 3. The photovoltaic module 1 is provided with an inflation device at each of the lower part with a lower position and the upper part with a higher position.

[0010] The water level monitor 6 is set on the bracket 2, at a position lower than the lowest edge of the photovoltaic module 1, and is used to detect the water level below the photovoltaic module and identify whether there is a risk of waterlogging. The controller 7 is installed on the lower wall surface of the photovoltaic module 1 and is electrically connected to the water level monitor 6, the air pump 4 and the motor of the electric switch structure, and is used to receive the monitoring information of the water level monitor 6 and control the power-on of the air pump 4 and the motor according to the monitoring information. The power supply of the whole device can come from the power generation of the photovoltaic module or another standby power supply. The electrical connection between the water level monitor 6 and the controller 7, as well as the electrical connection between the photovoltaic modules, are all through pluggable wire connectors. When the flooded photovoltaic module is separated from the bracket, the connecting wires between the water level monitor 6 and the controller 7 and the connecting wires between the photovoltaic modules are also easily separated, which has a protective effect on the photovoltaic module.

[0011] In the normal situation without flooding, the electric switch structure firmly installs the photovoltaic module on the bracket, and the airbag is not inflated. When a flood occurs and the water level monitor detects the water level, both the air pump 4 and the motor of the electric switch structure are powered on. The air pump 4 inflates the airbag 3, and the clamping plate 52 of the electric switch structure rotates in the Figure 2 counterclockwise direction to release the connection between the photovoltaic module and the bracket. When the water level further rises to the airbag 3 at the low position, at this time the airbag 3 is already inflated and floats on the water surface, lifting the low position end of the photovoltaic module. When the water level continues to rise to the airbag 3 at the high position, the water surface lifts the inflated airbag 3 at the high position. The photovoltaic module is separated from the bracket and is supported by two airbags and floats on the water surface, avoiding being soaked by the flood and being well protected. It can be salvaged in the water flow, and the salvage is timely, safe and convenient. The two sets of inflation devices enable the photovoltaic module to receive a balanced lifting force and float more stably in the water.

Claims

1. A ground power station photovoltaic module device, comprising a bracket and a photovoltaic module arranged on the bracket, characterized in that, It further includes a water level monitor, an inflation device and a controller. The photovoltaic module is detachably connected to the bracket through an electric switch structure. The position of the water level monitor is lower than the lowest edge of the photovoltaic module. The inflation device includes an airbag fixed on the photovoltaic module and an air pump. The airbag is below the photovoltaic module, and the air pump is used to inflate the airbag. The controller is electrically connected to the water level monitor, the air pump and the electric switch structure. When the water level monitor detects the water level, the controller controls the air pump and the electric switch structure to be powered on. The air pump inflates the airbag, and the electric switch structure releases the connection between the photovoltaic module and the bracket.

2. The ground power station photovoltaic module device according to claim 1, characterized in that, The electric switch structure includes a support, a rotating member and a motor. The support is installed on the bracket. The rotating member includes a rotating shaft and a clamping plate. The rotating member is rotatably installed on the support through the rotating shaft. The output shaft of the motor is connected to the rotating shaft, and the motor is used to drive the rotating shaft to rotate. There is a placement groove on the bracket, and the placement groove is on one side of the support. The photovoltaic module is provided with a support rod, and the support rod is placed in the placement groove of the bracket. The clamping plate can rotate above the support rod to lock the support rod in the placement groove.

3. The ground power station photovoltaic module device according to claim 2, characterized in that, The controller is arranged on the photovoltaic module and is connected to the water level monitor through a pluggable wire connector.

4. The ground power station photovoltaic module device according to claim 3, characterized in that, One inflation device is provided at each of the lower part with a low position and the upper part with a high position of the photovoltaic module.

5. The ground power station photovoltaic module device according to any one of claims 1 to 4, characterized in that, The water level monitor is arranged on the bracket.

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