CN219659664U - Photovoltaic snow melting system - Google Patents
Photovoltaic snow melting system Download PDFInfo
- Publication number
- CN219659664U CN219659664U CN202223549016.7U CN202223549016U CN219659664U CN 219659664 U CN219659664 U CN 219659664U CN 202223549016 U CN202223549016 U CN 202223549016U CN 219659664 U CN219659664 U CN 219659664U
- Authority
- CN
- China
- Prior art keywords
- snow melting
- photovoltaic panel
- inverter
- photovoltaic
- controller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000002844 melting Methods 0.000 title claims abstract description 84
- 230000008018 melting Effects 0.000 title claims abstract description 79
- 230000005611 electricity Effects 0.000 claims description 10
- 239000005413 snowmelt Substances 0.000 claims 2
- 238000010248 power generation Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
Landscapes
- Photovoltaic Devices (AREA)
Abstract
The utility model discloses a photovoltaic snow melting system, which comprises a photovoltaic panel, an inverter and a snow melting controller, wherein the photovoltaic panel is connected with the inverter; two ends of the snow melting controller are respectively connected with the photovoltaic panel and the inverter; the inverter is used for inverting the output current of the photovoltaic panel so as to supply power for an external load; the snow melting controller is internally provided with a direct current power supply module which is used for applying reverse current to the photovoltaic panel so as to realize snow melting operation. According to the scheme, the design difficulty of the snow melting controller is greatly reduced, the switching of the switching-off of the inverter and the switching of direct current power supply can be realized only by operating one change-over switch, and the rapid power generation capacity and the rapid snow melting of the photovoltaic panel are further realized.
Description
Technical Field
The utility model relates to the technical field of photovoltaic power generation, in particular to a photovoltaic snow melting system.
Background
The photovoltaic panel is an array plate composed of photovoltaic cells, namely a plurality of photovoltaic cells are placed on a large panel to form a large unit for power generation through series connection, parallel connection or series-parallel connection, and the output voltage and the output current can be increased so as to drive a load better.
In daily life, can avoid meeting snowing weather, along with the existence of snow, photovoltaic panel can't normally work, especially in north, weather is colder, and though daily light is sufficient, still can't guarantee that snow melts, and it is even several weeks that the snow lasts, probably causes a few losses. The existing method for solving the snow accumulation problem mostly adopts manual snow sweeping, which is time-consuming and labor-consuming; or the resistance heating module is added on the photovoltaic panel to realize the design, but the design of the photovoltaic panel needs to be changed, so that the design is not attractive.
Therefore, a method for rapidly and effectively removing snow on the photovoltaic panel is needed.
Disclosure of Invention
The utility model provides a photovoltaic snow-melting system, which greatly simplifies the design difficulty, and can realize the switching of the switching-off of an inverter and the direct current power supply by only operating one change-over switch, thereby realizing the rapid snow melting.
In one aspect, a photovoltaic snow melting system is provided, the system comprising: a photovoltaic panel, an inverter, and a snow melting controller;
two ends of the snow melting controller are respectively connected with the photovoltaic panel and the inverter;
the inverter is used for inverting the output current of the photovoltaic panel so as to supply power for an external load;
the snow melting controller is internally provided with a direct current power supply module, and the direct current power supply module is used for applying reverse current to the photovoltaic panel so as to realize snow melting operation.
In one possible implementation manner, a change-over switch is further arranged in the snow melting controller, and the change-over switch is used for switching a connection point of an internal circuit of the snow melting controller between the inverter and the direct current power supply module.
In one possible implementation, the internal circuit of the snow melting controller includes an inverter circuit and a snow melting circuit;
when the photovoltaic panel normally generates electricity, the change-over switch is connected with the inversion circuit so that the photovoltaic panel is directly connected with the inverter;
when the photovoltaic panel performs snow melting operation, the change-over switch is connected with the snow melting circuit, so that the photovoltaic panel is directly connected with the direct current power supply module.
In one possible implementation manner, the direct current power supply module is also connected to an external power supply to supply power to the direct current power supply module.
In one possible implementation, the dc power module is connected to the external power source through a socket.
In one possible embodiment, the photovoltaic panel comprises a plurality of monolithic photovoltaic cells.
In one possible embodiment, when the photovoltaic panel is generating electricity normally, current within the monolithic photovoltaic cell flows from the negative electrode to the positive electrode and into the inverter.
In one possible embodiment, when the photovoltaic panel performs a snow melting operation, the output current of the dc power supply module flows through the positive electrode of the single photovoltaic cell to the negative electrode of the single photovoltaic cell.
In one possible embodiment, the monolithic photovoltaic cell comprises a diode, a series resistance Rs, and a shunt resistance Rsh.
In one possible implementation, when the photovoltaic panel performs a snow melting operation, the output current of the dc power supply module flows from the positive electrode of the single photovoltaic cell, through the series resistor Rs and the diode in sequence, to the negative electrode of the single photovoltaic cell.
The technical scheme provided by the utility model can comprise the following beneficial effects:
the photovoltaic snow melting system comprises a photovoltaic panel, an inverter and a snow melting controller; two ends of the snow melting controller are respectively connected with the photovoltaic panel and the inverter; the inverter is used for inverting the output current of the photovoltaic panel so as to supply power for an external load; the snow melting controller is internally provided with a direct current power supply module which is used for applying reverse current to the photovoltaic panel so as to realize snow melting operation. According to the scheme, the design difficulty of the snow melting controller is greatly reduced, the switching of the switching-off of the inverter and the switching of direct current power supply can be realized only by operating one change-over switch, and the rapid power generation capacity and the rapid snow melting of the photovoltaic panel are further realized.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a photovoltaic snow melting system according to an exemplary embodiment.
Fig. 2 is a schematic structural diagram of an existing photovoltaic system, according to an exemplary embodiment.
Fig. 3 is a schematic diagram showing an internal structure of a snow melting controller according to an exemplary embodiment.
Fig. 4 is a schematic structural view of a photovoltaic panel according to an exemplary embodiment.
Fig. 5 is a schematic diagram illustrating the flow of current within a monolithic photovoltaic cell when the photovoltaic panel is generating electricity normally, according to an exemplary embodiment.
Fig. 6 illustrates a schematic diagram of the current flow within a single photovoltaic cell when the photovoltaic panel is performing a snow melting operation, according to an exemplary embodiment of the present utility model.
Wherein, 1-photovoltaic panel; a 2-inverter; 3-a snow melting controller; 301-a direct current power supply module; 302-a change-over switch; 101-monolithic photovoltaic cell.
Detailed Description
The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be understood that, in the description of the embodiments of the present utility model, the term "corresponding" may indicate that there is a direct correspondence or an indirect correspondence between the two, or may indicate that there is an association between the two, or may indicate a relationship between the two and the indicated, configured, etc.
Fig. 1 is a schematic diagram of a photovoltaic snow melting system according to an exemplary embodiment. As shown in fig. 1, the system includes: a photovoltaic panel 1, an inverter 2, and a snow-melting controller 3;
two ends of the snow melting controller 3 are respectively connected with the photovoltaic panel 1 and the inverter 2;
the inverter 2 is used for inverting the output current of the photovoltaic panel 1 to supply power for an external load;
the snow melting controller 3 is provided with a direct current power supply module 301, and the direct current power supply module 301 is used for applying reverse current to the photovoltaic panel 1 so as to realize snow melting operation.
Further, referring to the schematic structural diagram of the conventional photovoltaic system shown in fig. 2, in the prior art, the snow melting controller 3 in fig. 1 is not provided in the photovoltaic system, as shown in fig. 2, the photovoltaic panel 1 is directly connected to the inverter 3 through a wire, and is output by direct current-to-direct current output of the inverter 3, and is connected to grid connection to supply power for external loads. According to the utility model, the snow melting controller 3 is connected between the photovoltaic panel 1 and the inverter 2, and when the snow melting operation is needed, the direct current power supply module 301 in the snow melting controller 3 is used for applying reverse current to the photovoltaic panel 1, so that the capability of rapid power generation of the photovoltaic panel 1 and rapid snow melting are realized.
Further, in daily life, the dc power supply module 301 is also called a charging module, and the dc power supply module 301 mainly includes two functions: 1) Rectifying, namely rectifying direct current 220v or direct current 110v of alternating current 380v voltage, and supplying secondary control, signals and protection through direct current bus distribution; 2) The power supply for daily float charging is provided for the storage battery. It should be noted that the input of the dc power supply module 301 is ac 380v, and the output is dc.
Further, the inverter 2 converts direct current power (battery, accumulator) into alternating current (typically 220v, 50HZ sine or square wave). That is, the inverter 2 is a device that converts Direct Current (DC) into Alternating Current (AC), and is composed of an inverter bridge, control logic, and a filter circuit.
In a possible embodiment, a change-over switch 302 is further disposed in the snow melting controller 3, and the change-over switch 302 is used to switch the connection point of the internal circuit of the snow melting controller 3 between the inverter 2 and the dc power supply module 301.
In one possible embodiment, the internal circuit of the snow melting controller 3 includes an inverter circuit and a snow melting circuit;
when the photovoltaic panel 1 generates electricity normally, the change-over switch 302 turns on the inversion circuit to enable the photovoltaic panel 1 to be directly connected to the inverter 2;
when the photovoltaic panel 1 performs a snow melting operation, the change-over switch 302 turns on the snow melting line, so that the photovoltaic panel 1 is directly connected to the dc power supply module 301.
Further, referring to the schematic internal structure of the snow-melting controller 3 shown in fig. 3, as shown in fig. 3, two ends of the snow-melting controller 3 are an inverter end (connected with the inverter 2) and a photovoltaic panel end (connected with the photovoltaic panel 1), and the snow-melting controller 3 includes a switch 302 in addition to the dc power supply module 301, and the switch 302 can be used for switching a line so that the photovoltaic panel 1 is directly connected to the inverter 2 or directly connected to the dc power supply module 301. Illustratively, the line switching of the transfer switch 302 may be manually controlled.
As shown in fig. 3, the internal circuit of the snow melting controller 3 includes a circuit 1 (i.e. the inverter circuit) and a circuit 2 (i.e. the snow melting circuit), the switch 302 is disposed at the junction of the circuit 1 and the circuit 2, so that the circuit 1 and the circuit 2 can be switched, for example, when the photovoltaic panel 1 needs to generate electricity normally, the switch 302 is connected to the circuit 1, the electric energy collected by the photovoltaic panel 1 is directly connected to the inverter 2 via the circuit 1 of the snow melting controller 3, and the dc-ac conversion is performed in the inverter 2, and finally the connection is connected to the grid. When the photovoltaic panel 1 performs a snow melting operation, the transfer switch 302 is connected to the line 2, so that the photovoltaic panel 1 is directly connected to the dc power supply module 301, at this time, the photovoltaic panel 1 does not generate electric energy, and the electric energy in the dc power supply module 301 is connected to the photovoltaic panel 1 via the line 2 to heat the photovoltaic panel 1, thereby achieving the purpose of melting snow.
Further, if the function of melting snow is to be accelerated when the photovoltaic panel 1 performs the snow melting operation, the heating speed of the photovoltaic panel 1 can be increased by adjusting the current of the dc power supply module 301.
In one possible implementation, the dc power module 301 is also connected to an external power source to power the dc power module 301.
In one possible implementation, the dc power module 301 is connected to the external power source through a socket.
Further, the dc power supply module 301 is connected to ac through a socket, so as to ensure sufficient electric energy in the dc power supply module 301.
In one possible embodiment, the photovoltaic panel 1 comprises a plurality of monolithic photovoltaic cells 101.
Further, referring to the schematic structural diagram of the photovoltaic panel 1 shown in fig. 4, the photovoltaic panel 1 includes a plurality of single photovoltaic cells 101, and under normal conditions, current flows from the negative electrode to the positive electrode during the power generation process of the photovoltaic panel 1.
In one possible embodiment, when the photovoltaic panel 1 is generating electricity normally, the current in the monolithic photovoltaic cell 101 flows from the negative electrode to the positive electrode and is connected to the inverter 2.
In one possible embodiment, when the photovoltaic panel 1 performs a snow melting operation, the output current of the dc power supply module 301 flows through the positive electrode of the single photovoltaic cell 101 to the negative electrode of the single photovoltaic cell 101.
In one possible implementation, the monolithic photovoltaic cell 101 includes a diode, a series resistance Rs, and a shunt resistance Rsh.
In one possible embodiment, when the photovoltaic panel 1 performs a snow melting operation, the output current of the dc power supply module 301 flows from the positive electrode of the single photovoltaic cell 101 to the negative electrode of the single photovoltaic cell 101 through the series resistor Rs and the diode in sequence.
Further, referring to fig. 5, when the photovoltaic panel 1 generates electricity normally, the current in the single photovoltaic cell 101 flows to a schematic diagram, the photo-generated current IL exists in the single photovoltaic cell 101, and the current in the single photovoltaic cell 101 flows from the negative electrode to the positive electrode, and finally is connected to the inverter 2 via the series resistor Rs.
Further, referring to fig. 6, when the photovoltaic panel 1 performs the snow melting operation, the current flow in the single photovoltaic cell 101 is schematically shown, and the photovoltaic panel 1 does not generate electricity when reversing, so that no current IL is generated in the single photovoltaic cell 101, and the output current of the dc power supply module 301 flows from the positive electrode of the single photovoltaic cell 101 to the negative electrode of the single photovoltaic cell 101 through the series resistor Rs and the diode in sequence, so as to form a reverse current applied to the photovoltaic panel 1, and further heat the photovoltaic panel 1, so as to achieve the purpose of melting snow.
In summary, the photovoltaic snow melting system comprises a photovoltaic panel, an inverter and a snow melting controller; two ends of the snow melting controller are respectively connected with the photovoltaic panel and the inverter; the inverter is used for inverting the output current of the photovoltaic panel so as to supply power for an external load; the snow melting controller is internally provided with a direct current power supply module which is used for applying reverse current to the photovoltaic panel so as to realize snow melting operation. According to the scheme, the design difficulty of the snow melting controller is greatly reduced, the switching of the switching-off of the inverter and the switching of direct current power supply can be realized only by operating one change-over switch, and the rapid power generation capacity and the rapid snow melting of the photovoltaic panel are further realized.
Other embodiments of the utility model will be apparent to those skilled in the art from consideration of the specification and practice of the utility model disclosed herein. This utility model is intended to cover any variations, uses, or adaptations of the utility model following, in general, the principles of the utility model and including such departures from the present disclosure as come within known or customary practice within the art to which the utility model pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the utility model being indicated by the following claims.
It is to be understood that the utility model is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the utility model is limited only by the appended claims.
Claims (10)
1. A photovoltaic snow melting system, the system comprising: a photovoltaic panel, an inverter, and a snow melting controller;
two ends of the snow melting controller are respectively connected with the photovoltaic panel and the inverter;
the inverter is used for inverting the output current of the photovoltaic panel so as to supply power for an external load;
the snow melting controller is internally provided with a direct current power supply module, and the direct current power supply module is used for applying reverse current to the photovoltaic panel so as to realize snow melting operation.
2. The system of claim 1, wherein a transfer switch is further disposed within the snow melting controller for switching a connection point of an internal circuit of the snow melting controller between the inverter and the dc power module.
3. The system of claim 2, wherein the internal circuitry of the snow melt controller includes an inverter circuitry and a snow melt circuitry;
when the photovoltaic panel normally generates electricity, the change-over switch is connected with the inversion circuit so that the photovoltaic panel is directly connected with the inverter;
when the photovoltaic panel performs snow melting operation, the change-over switch is connected with the snow melting circuit, so that the photovoltaic panel is directly connected with the direct current power supply module.
4. The system of claim 1, wherein the dc power module is further connected to an external power source to power the dc power module.
5. The system of claim 4, wherein the dc power module is connected to the external power source via a socket.
6. The system of any one of claims 1 to 5, wherein the photovoltaic panel comprises a plurality of monolithic photovoltaic cells.
7. The system of claim 6, wherein when the photovoltaic panel is generating electricity normally, current within the monolithic photovoltaic cell flows from negative to positive and into the inverter.
8. The system of claim 6, wherein the output current of the dc power module flows through the positive electrode of the single photovoltaic cell to the negative electrode of the single photovoltaic cell when the photovoltaic panel is subjected to a snow melting operation.
9. The system of claim 6, wherein the monolithic photovoltaic cell comprises a diode, a series resistance Rs, and a shunt resistance Rsh.
10. The system of claim 9, wherein when the photovoltaic panel is subjected to a snow melting operation, the output current of the dc power module flows from the positive electrode of the single photovoltaic cell, through the series resistor Rs and the diode in sequence, to the negative electrode of the single photovoltaic cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223549016.7U CN219659664U (en) | 2022-12-28 | 2022-12-28 | Photovoltaic snow melting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223549016.7U CN219659664U (en) | 2022-12-28 | 2022-12-28 | Photovoltaic snow melting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219659664U true CN219659664U (en) | 2023-09-08 |
Family
ID=87861316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223549016.7U Active CN219659664U (en) | 2022-12-28 | 2022-12-28 | Photovoltaic snow melting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219659664U (en) |
-
2022
- 2022-12-28 CN CN202223549016.7U patent/CN219659664U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104113133B (en) | Intelligent photovoltaic off-network inverter system and power consumption control method thereof | |
| CN108054826B (en) | Light storage system for protecting anti-impact current storage battery | |
| CN103501020A (en) | Hybrid power supply system consisting of mains supply network and photovoltaic assembly and control method thereof | |
| CN204089686U (en) | A kind of photovoltaic inversion energy-storage system | |
| CN209948693U (en) | Photovoltaic off-grid and grid-connected integrated inverter | |
| CN203277407U (en) | Intelligent snow removal device | |
| CN219513804U (en) | Photovoltaic inverter and auxiliary power supply device | |
| CN219659664U (en) | Photovoltaic snow melting system | |
| CN207082892U (en) | A kind of simple light bavin stores energy mix micro-capacitance sensor | |
| CN103227216A (en) | Intelligent snow removing device and control method thereof | |
| CN215186036U (en) | Multifunctional power supply device for base station | |
| CN107154730B (en) | A kind of generation of electricity by new energy two-way changing circuit and control method | |
| CN212380953U (en) | Intelligent photovoltaic grid-connected and off-grid integrated energy storage inverter | |
| CN209571989U (en) | A kind of series-parallel automatic switchover system of roof photovoltaic group string | |
| CN202651815U (en) | Multiple-backup solar power supply system | |
| CN212258435U (en) | Grid-connected and off-grid photovoltaic system | |
| JPH0923019A (en) | Photovoltaic power generation system having snow melting function | |
| CN214429256U (en) | Solar street lamp's panel parallel operation protection system | |
| CN219372034U (en) | Photovoltaic power generation grid-connected box and photovoltaic power generation system | |
| CN219739974U (en) | Photovoltaic energy storage grid-connected operation system | |
| CN108736345A (en) | A kind of multi-energy complementation mobile power vehicle device | |
| CN213243578U (en) | Solar sunshade control system | |
| TWI498517B (en) | Multi - standby solar power supply system | |
| CN217607546U (en) | Power supply unit in coordination | |
| CN207947639U (en) | A kind of multiple feed refrigerator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |