CN220022739U - Automatic snow melt device of photovoltaic module - Google Patents
Automatic snow melt device of photovoltaic module Download PDFInfo
- Publication number
- CN220022739U CN220022739U CN202321636586.1U CN202321636586U CN220022739U CN 220022739 U CN220022739 U CN 220022739U CN 202321636586 U CN202321636586 U CN 202321636586U CN 220022739 U CN220022739 U CN 220022739U
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- Prior art keywords
- photovoltaic module
- transistor
- photovoltaic
- resistor
- short circuit
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- 239000005413 snowmelt Substances 0.000 title description 2
- 238000002844 melting Methods 0.000 claims abstract description 18
- 230000008018 melting Effects 0.000 claims abstract description 15
- 238000010438 heat treatment Methods 0.000 claims description 20
- 238000005286 illumination Methods 0.000 claims description 7
- 238000010248 power generation Methods 0.000 abstract description 22
- 230000000694 effects Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Photovoltaic Devices (AREA)
Abstract
The utility model provides an automatic snow melting device for a photovoltaic module, which effectively solves the problems that the comprehensive efficiency of power generation of the photovoltaic module is reduced and the labor cost and the equipment cost are increased by adopting the conventional snow removing mode of the photovoltaic module.
Description
Technical Field
The utility model relates to the technical field of photovoltaic power generation, in particular to an automatic snow melting device for a photovoltaic module.
Background
Photovoltaic modules are widely used in power generation production by utilizing the photovoltaic effect of their own semiconductor materials, thereby realizing the conversion of solar radiation energy into electrical energy, which is an important way of producing clean, safe and renewable energy.
The photovoltaic module has two power generation modes of single-sided power generation and double-sided power generation. As the name implies, single-sided power generation means power generation by only the light-facing surface of the photovoltaic module, and double-sided power generation means power generation by the backlight surface of the photovoltaic module, and thus the double-sided power generation system is widely used. However, the photovoltaic module adopting the double-sided power generation mode or the single-sided power generation mode has major defects in winter power generation, namely, the light-facing surface cannot normally generate power due to the coverage of snow in snowfall weather, and the photovoltaic module adopting the double-sided power generation mode can only utilize the weak light source of the backlight surface to perform low-efficiency power generation in the same weather environment, so that the productivity of electric energy is greatly reduced, and the comprehensive efficiency of power generation of the photovoltaic module is reduced. The snow removing device is manually cleaned or configured in a main mode of removing snow on the photovoltaic module, but the labor cost and the equipment cost are increased in the two modes, and meanwhile, a certain amount of labor is required for installing the snow removing device.
The present utility model thus provides a new solution to this problem.
Disclosure of Invention
Aiming at the defects existing in the prior art, the utility model aims to provide the automatic snow melting device for the photovoltaic module, which effectively solves the problems that the comprehensive efficiency of the power generation of the photovoltaic module is reduced and the labor cost and the equipment cost are increased by the snow removing mode of the existing photovoltaic module.
The technical scheme is that the automatic snow melting device for the photovoltaic module comprises a photosensitive control unit, a short circuit unit and a heating unit, wherein the photosensitive control unit controls the heating unit through the short circuit unit according to the detected illumination intensity of the photovoltaic module;
one end of the short circuit unit is connected with the photosensitive control unit, and the other end of the short circuit unit is connected with the heating unit.
Further, the photosensitive control unit comprises a photosensitive resistor RG, the short-circuit unit comprises a transistor VT and a transistor IGBT, and the heating unit comprises a plurality of photovoltaic battery packs.
Further, one end of the photoresistor RG is respectively connected with one end of the resistor R2 and the base electrode of the transistor VT, the collector electrode of the transistor VT is respectively connected with one end of the resistor R1 and the grid electrode of the transistor IGBT, the collector electrode of the transistor IGBT is respectively connected with the other end of the resistor R1, the other end of the resistor R2 and the anode of the photovoltaic battery pack, and the other end of the photoresistor RG is respectively connected with the emitter electrode of the transistor VT, the emitter electrode of the transistor IGBT and the cathode of the photovoltaic battery pack.
Further, the heating unit further comprises a standby unit comprising a diode.
Further, the cathode of the diode is connected with the anode of the photovoltaic battery pack, and the anode of the diode is connected with the cathode of the photovoltaic battery pack.
The utility model has the following beneficial effects:
according to the utility model, when the photovoltaic module is covered by accumulated snow, the photosensitive control unit performs short circuit on the photovoltaic module and the transistor IGBT through the short circuit unit according to the detected illumination intensity of the photovoltaic module, so that the heating unit utilizes short circuit current formed by the power generation capacity of the backlight surface of the photovoltaic module in a weak light environment caused by accumulated snow, and utilizes the thermal effect brought by the short circuit current to heat the photovoltaic module to realize automatic snow melting so as to accelerate the snow melting, reduce the snow melting time of the photovoltaic module, improve the comprehensive efficiency of power generation of the photovoltaic module, and further reduce the labor cost and the equipment cost.
Drawings
FIG. 1 is a schematic block diagram of the present utility model.
Fig. 2 is a circuit schematic of the present utility model.
Fig. 3 is a schematic diagram of the connection of the present heating unit.
Detailed Description
The foregoing and other features, aspects and advantages of the present utility model will become more apparent from the following detailed description of the embodiments, which proceeds with reference to the accompanying fig. 1. The following embodiments are described in detail with reference to the drawings.
Exemplary embodiments of the present utility model will be described below with reference to the accompanying drawings.
The automatic snow melting device for the photovoltaic module is applied to snowing weather in winter and comprises a photosensitive control unit, a short circuit unit and a heating unit, wherein the photosensitive control unit controls the heating unit through the short circuit unit according to the detected illumination intensity of the photovoltaic module;
one end of the short circuit unit is connected with the photosensitive control unit, and the other end of the short circuit unit is connected with the heating unit.
Specifically, the photosensitive control unit detects the illumination intensity on the photovoltaic module, when no snow exists on the photovoltaic module, the detected illumination on the photovoltaic module is strong, the short circuit unit is not started at the moment, the photovoltaic module generates electricity normally, when snow exists on the photovoltaic module, the detected illumination on the photovoltaic module is weak, the photovoltaic module cannot generate electricity normally, at the moment, the short circuit unit is started, the short circuit unit starts the heating unit for the photovoltaic module, and therefore the snow melting speed is improved automatically.
The utility model is particularly applied to a double-sided photovoltaic module, wherein the double-sided photovoltaic module is provided with a light-facing surface and a backlight surface, and the light-facing surface and the backlight surface have the same power generation capacity. Normally, the light-facing surface normally generates electricity by using sunlight, and the backlight surface normally generates electricity by using other forms of sunlight such as diffuse reflection.
Further, the photosensitive control unit comprises a photosensitive resistor RG, the short-circuit unit comprises a transistor VT and a transistor IGBT, and the heating unit comprises a plurality of photovoltaic battery packs.
Further, one end of the photoresistor RG is respectively connected with one end of the resistor R2 and the base electrode of the transistor VT, the collector electrode of the transistor VT is respectively connected with one end of the resistor R1 and the grid electrode of the transistor IGBT, the collector electrode of the transistor IGBT is respectively connected with the other end of the resistor R1, the other end of the resistor R2 and the anode of the photovoltaic battery pack, and the other end of the photoresistor RG is respectively connected with the emitter electrode of the transistor VT, the emitter electrode of the transistor IGBT and the cathode of the photovoltaic battery pack.
Specifically, when the front surface of the photovoltaic module faces light and is not covered by snow, the photoresistor resistance value is in a lower level, the base voltage of the parallel transistor VT is reduced, the transistor VT cannot be conducted, the transistor VT is an NPN triode, the collector-emitter of the transistor VT is in an open-circuit state, the gate voltage of the transistor IGBT is increased, the collector-gate voltage difference is reduced, the collector-emitter is in an open-circuit state, the photovoltaic battery pack cannot form a loop with the transistor IGBT, the anode and the cathode of the photovoltaic battery pack work normally, and electric energy is output to the photovoltaic module.
When the front face of the photovoltaic module is covered by snow, the photoresistor RG is also covered by snow, the resistance of the photoresistor rises, a voltage dividing circuit formed by the resistor R2 and the photoresistor RG conducts the triode VT, the collector-emitter of the triode VT is in a channel state, the grid voltage of the transistor IGBT is reduced, the collector-gate voltage difference rises, the collector-emitter of the transistor IGBT conducts, the photovoltaic battery pack and the transistor IGBT form a short circuit, the heating unit heats the photovoltaic module by utilizing a short circuit current formed by the backlight face power generation capacity of the photovoltaic module in a low-light environment caused by snow, and the thermal effect caused by the short circuit current accelerates snow melting.
One photovoltaic battery pack is a photovoltaic module, and the heating unit can heat the plurality of photovoltaic battery packs, namely the plurality of photovoltaic modules, so as to melt snow.
And when in actual use, a plurality of photovoltaic modules are connected in series, the problem that other photovoltaic modules cannot generate power due to the phenomenon that a certain photovoltaic module is disconnected or opened is often caused, and for ensuring the normal operation of a certain photovoltaic module, a standby unit is further arranged in the heating unit and comprises a diode, the cathode of the diode is connected with the anode of the photovoltaic cell, the anode of the diode is connected with the cathode of the photovoltaic cell, the effect of the diode is reverse cut off, the safety of the current of the photovoltaic module in the process of flowing from the cathode to the anode is ensured, and the parallel diode of the disconnected photovoltaic module and other photovoltaic modules form a connected series loop, so that a plurality of groups of photovoltaic modules can generate power normally.
When the snow-melting device is used, the light intensity of the light-receiving surface of the photovoltaic module is detected by utilizing the photosensitive control unit included in the snow-melting device, when snow is covered, the resistance value of the photoresistor RG is increased, the photoresistor turns on the short-circuit unit, and the transistor IGBT in the short-circuit unit and the backlight surface of the photovoltaic module form a short-circuit current, so that automatic snow melting is carried out on the light-receiving surface of the photovoltaic module.
Claims (5)
1. The automatic snow melting device for the photovoltaic module is characterized by comprising a photosensitive control unit, a short circuit unit and a heating unit, wherein the photosensitive control unit controls the heating unit through the short circuit unit according to the detected illumination intensity of the photovoltaic module;
one end of the short circuit unit is connected with the photosensitive control unit, and the other end of the short circuit unit is connected with the heating unit.
2. The automatic snow melting device for the photovoltaic module according to claim 1, wherein the photosensitive control unit comprises a photosensitive resistor RG, the short-circuit unit comprises a transistor VT and a transistor IGBT, and the heating unit comprises a plurality of photovoltaic battery packs.
3. The automatic snow-melting device of a photovoltaic module according to claim 2, wherein one end of the photoresistor RG is respectively connected with one end of the resistor R2 and the base electrode of the transistor VT, the collector electrode of the transistor VT is respectively connected with one end of the resistor R1 and the gate electrode of the transistor IGBT, the collector electrode of the transistor IGBT is respectively connected with the other end of the resistor R1, the other end of the resistor R2 and the positive electrode of the photovoltaic cell, and the other end of the photoresistor RG is respectively connected with the emitter electrode of the transistor VT, the emitter electrode of the transistor IGBT and the negative electrode of the photovoltaic cell.
4. The photovoltaic module automatic snow melting apparatus of claim 1, wherein the heating unit further comprises a backup unit comprising a diode.
5. The automatic snow melting device for the photovoltaic module according to claim 4, wherein the cathode of the diode is connected with the anode of the photovoltaic cell, and the anode of the diode is connected with the cathode of the photovoltaic cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321636586.1U CN220022739U (en) | 2023-06-25 | 2023-06-25 | Automatic snow melt device of photovoltaic module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321636586.1U CN220022739U (en) | 2023-06-25 | 2023-06-25 | Automatic snow melt device of photovoltaic module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220022739U true CN220022739U (en) | 2023-11-14 |
Family
ID=88671950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321636586.1U Active CN220022739U (en) | 2023-06-25 | 2023-06-25 | Automatic snow melt device of photovoltaic module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220022739U (en) |
-
2023
- 2023-06-25 CN CN202321636586.1U patent/CN220022739U/en active Active
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