CN111988967A - Photovoltaic inverter heat dissipation structure and method thereof - Google Patents
Photovoltaic inverter heat dissipation structure and method thereof Download PDFInfo
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- CN111988967A CN111988967A CN202010893819.0A CN202010893819A CN111988967A CN 111988967 A CN111988967 A CN 111988967A CN 202010893819 A CN202010893819 A CN 202010893819A CN 111988967 A CN111988967 A CN 111988967A
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- 230000017525 heat dissipation Effects 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 9
- 230000005494 condensation Effects 0.000 claims abstract description 17
- 238000009833 condensation Methods 0.000 claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims description 11
- 238000009434 installation Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 12
- 238000001816 cooling Methods 0.000 abstract description 7
- 238000007789 sealing Methods 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/20936—Liquid coolant with phase change
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/30—Electrical components
- H02S40/32—Electrical components comprising DC/AC inverter means associated with the PV module itself, e.g. AC modules
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/20909—Forced ventilation, e.g. on heat dissipaters coupled to components
- H05K7/20918—Forced ventilation, e.g. on heat dissipaters coupled to components the components being isolated from air flow, e.g. hollow heat sinks, wind tunnels or funnels
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- 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
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention provides a photovoltaic inverter heat dissipation structure and a method thereof, wherein the heat dissipation structure comprises a shell, a panel arranged at the front part of the shell, a heat dissipation assembly arranged at the back of the shell and a circuit board arranged in the shell; the circuit board is attached with a spiral coil, and the spiral coil is connected with the radiating assembly through a condensation pipe and used for conducting heat. According to the invention, the spiral coil is attached to the circuit board, the heat dissipation assembly is arranged on the back surface of the shell, and the spiral coil and the heat dissipation assembly are connected through the condenser pipe to form the heat pipe heat dissipation structure, so that heat generated on the circuit board is quickly conducted to the outside of the shell through the condensate in the condenser pipe, and the cooling effect is obvious.
Description
Technical Field
The invention relates to the field of photovoltaic inverters, in particular to a photovoltaic inverter heat dissipation structure and a method thereof.
Background
An inverter is a power conditioning apparatus composed of semiconductor devices, and is mainly used to convert direct current power into alternating current power. The solar energy power generation system generally comprises a boosting circuit and an inverter bridge circuit, wherein the boosting circuit boosts the direct-current voltage of a solar battery to the direct-current voltage required by the output control of an inverter; the inverter bridge circuit equivalently converts the boosted direct-current voltage into alternating-current voltage with common frequency.
In photovoltaic power generation systems, reliable operation of photovoltaic inverters plays an important role. But the biggest problem of present photovoltaic inverter lies in guaranteeing the heat dissipation of box, avoids causing the damage to the components and parts in the box. The heat dissipation of the traditional photovoltaic inverter adopts forced air cooling, such as: the high-power device IGBT module structure assembly and the reactor assembly are respectively arranged in different cabinets for cooling and heat dissipation, so that the heat dissipation speed is low and the effect is poor; and because there are a plurality of air intakes and air outlets, lead to the waterproof dustproof effect of the container body to be poor, cause the complete machine reliability to reduce.
Disclosure of Invention
The invention aims to provide a photovoltaic inverter heat dissipation structure and a method thereof, and solves the problems that in the prior art, a photovoltaic inverter is low in heat dissipation efficiency, poor in waterproof and dustproof effects and low in reliability of the whole machine.
In order to solve the technical problems, the invention adopts the technical scheme that: a photovoltaic inverter heat dissipation structure comprises a shell, a panel arranged at the front part of the shell, a heat dissipation assembly arranged at the back of the shell, and a circuit board arranged in the shell; the circuit board is attached with a spiral coil, and the spiral coil is connected with the radiating assembly through a condensation pipe and used for conducting heat.
As the preferred scheme, radiator unit includes first radiator unit, first radiator unit includes first heat-conducting plate, first fin, parent tube and fan, first heat-conducting plate paste tightly in the casing back and rather than fixed connection, the parent tube circuitous set up in on the first heat-conducting plate, the parallel is equipped with a plurality of first fins on the parent tube, and it is adjacent to follow first fin clearance direction is equipped with the fan, parent tube inlet outlet end pass through the condenser pipe with the spiral coil both ends are linked together.
Preferably, the number of the fans is at least two, and the fans are fixedly arranged on the heat conduction plates on the same side of the fins.
As preferred scheme, radiator unit still includes second radiator unit, second radiator unit includes second heat-conducting plate, second fin and fan, the second heat-conducting plate hug closely in the casing back and rather than fixed connection, it is a plurality of the second fin parallel is located on the second heat-conducting plate, along adjacent first fin clearance direction is equipped with the fan, the installation department has on the second heat-conducting plate, be equipped with heating element on the installation department, heating element links to each other with the circuit board.
Preferably, the condensation pipe is provided with a first valve for controlling the on-off of the condensation pipe.
As a preferred scheme, the condenser pipe is connected with a circulating pump in parallel through a pipeline, and a second valve is arranged on the pipeline at the inlet end of the circulating pump.
Preferably, the spiral coil is provided with a coil inlet and a coil outlet, the coil inlet is positioned in the center of the spiral coil and extends upwards and bends to be connected with the outlet end of the condensing tube, and the coil outlet is connected with the outlet end of the condensing tube.
Preferably, the spiral coil is attached to the back of the circuit board through a heat conduction layer, and the heat conduction layer is made of an anti-electric conduction material.
Preferably, a waterproof sealing piece is arranged at the joint of the condensation pipe and the shell.
The heat dissipation method of the photovoltaic inverter heat dissipation structure comprises the following steps of: when the temperature is in a low-grade range, the first valve is controlled to be opened through the circuit board, and the second valve, the circulating pump, the fan F1 and the fan F2 are closed; when the temperature is in the middle range, controlling the first valve and the fan F1 to be opened, and controlling the second valve, the circulating pump and the fan F2 to be closed; when the temperature is in a high-grade interval, controlling the first valve, the fan F1 and the fan F2 to be opened, and controlling the second valve and the circulating pump to be closed; and when the temperature is in the ultra-high range, controlling the first valve to be closed, and controlling the second valve, the circulating pump, the fan F1 and the fan F2 to be opened.
Compared with the prior art, the invention has the beneficial effects that: the spiral coil is attached to the circuit board, the heat dissipation assembly is arranged on the back face of the shell, and the spiral coil and the heat dissipation assembly are connected through the condensation pipe to form a heat pipe heat dissipation structure, so that heat generated on the circuit board is quickly conducted to the outside of the shell through condensate in the condensation pipe, and the cooling effect is obvious; the condenser pipe is provided with a circulating pump, and when the flow rate of liquid in the condenser pipe is slow, the circulating pump is started to perform forced circulation, so that the heat dissipation effect is enhanced; the high-heating elements such as the inductor are moved to the outside of the shell and connected with the metal fins, and a fan is used for cooling when necessary, so that the temperature on the surface of the inductor is greatly reduced.
Drawings
The disclosure of the present invention is illustrated with reference to the accompanying drawings. It is to be understood that the drawings are designed solely for the purposes of illustration and not as a definition of the limits of the invention. In the drawings, like reference numerals are used to refer to like parts. Wherein:
fig. 1 is a schematic structural diagram of a heat dissipation structure of a photovoltaic inverter according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another view of the heat dissipation structure of the photovoltaic inverter according to the embodiment of the invention;
fig. 3 is a side view of a photovoltaic inverter heat dissipation structure of an embodiment of the present invention;
FIG. 4 is a schematic view of the connection between the spiral coil and the heat dissipation assembly according to the embodiment of the invention;
fig. 5 is a schematic structural diagram of a heat dissipation structure (adding a sun visor) of a photovoltaic inverter according to an embodiment of the present invention.
Reference numbers in the figures: the solar panel comprises a shell 1, a panel 2, a circuit board 3, a spiral coil 4, a coil inlet 401, a coil outlet 402, a first heat-conducting plate 5, a first fin 6, a fan 7, a base tube 8, a second heat-conducting plate 9, a second fin 10, an installation part 11, a heating element 12, a condenser pipe 13, a first valve 14, a second valve 15, a circulating pump 16, a display screen 17, a wire joint 18 and a sun shield 19.
Detailed Description
It is easily understood that according to the technical solution of the present invention, a person skilled in the art can propose various alternative structures and implementation ways without changing the spirit of the present invention. Therefore, the following detailed description and the accompanying drawings are merely illustrative of the technical aspects of the present invention, and should not be construed as all of the present invention or as limitations or limitations on the technical aspects of the present invention.
An embodiment according to the present invention is shown in connection with fig. 1. The utility model provides a photovoltaic inverter heat radiation structure, includes casing 1, panel 2 and circuit board 3, and this panel 2 can be dismantled and set up in casing 1 preceding, can dismantle the mode can be for screw connection, modes such as buckle connection, bonding, and panel 2 is equipped with the sealing strip with casing 1 department of meeting, prevents that the rainwater from getting into inside casing 1.
The circuit board 3 is arranged inside the shell 1, the circuit board 3 is used as a core device of the photovoltaic inverter and plays roles of voltage rising, voltage falling, current changing and control, and the circuit board 3 is provided with various electronic elements such as an IGBT module, a capacitor, a power panel, a temperature sensor and the like, and the circuit board 3 is in the prior art. The panel 2 is provided with a display screen 17, and the display screen 17 is connected with the circuit board 3 and used for displaying information such as generating capacity, generating power, temperature of the shell 1 and the like. The bottom of the shell 1 is provided with a wire connector 18 for connecting input and output current or control signals.
In the embodiment of the invention, the back of the shell 1 is provided with a heat radiation component, the circuit board 3 is attached with the spiral coil 4, and the spiral coil 4 is connected with the heat radiation component through the condenser pipe 13 and used for conducting heat. When the photovoltaic inverter works, an electronic element on the circuit board 3 can emit a large amount of heat, the circuit board 3 is called a hot end, the heat dissipation assembly is located outside the shell 1, the temperature is low and is called a cold end, and pressure difference is generated between the hot end and the cold end due to temperature difference. According to the heat pipe principle, the condensate in the condensation pipe 13 is heated at the hot end, the condensate is rapidly evaporated to form vapor and absorbs a large amount of heat, the vapor flows to the cold end under the action of pressure difference, releases the heat and is condensed into liquid again, and the circulation is carried out, so that the heat generated on the circuit board 3 is continuously conducted out.
Specifically, the spiral coil 4 is attached to the back of the circuit board 3 through a heat conduction layer, and the heat conduction layer can be made of silicone grease or solder paste and other anti-electric conduction materials. The spiral coil 4 has a coil inlet 401 and a coil outlet 402, the coil inlet 401 is located in the center of the spiral coil 4, and extends upwards and bends to be connected with the outlet end of the condenser tube 13, and the coil outlet 402 is connected with the outlet end of the condenser tube 13. The coil pipe is arranged in a spiral state, so that the contact area of the coil pipe and the circuit board 3 is increased, and the heat exchange efficiency is greatly improved.
The condensation pipe 13 is provided with a first valve 14 for controlling the on-off of the condensation pipe 13. The condenser pipe 13 is connected with a circulating pump 16 in parallel through a pipeline, and a second valve 15 is arranged on the pipeline at the inlet end of the circulating pump 16. The first valve 14 and the second valve 15 are both electrically operated valves, and the circulating pump 16, the first valve 14 and the second valve 15 are all electrically connected with the circuit board 3. And the circuit board 3 is provided with an infrared sensor for monitoring the temperature on the circuit board.
Furthermore, the joint of the condensation pipe 13 and the shell 1 is provided with a waterproof sealing piece, and the waterproof sealing piece can adopt a sealing ring, so that the waterproof and dustproof capacity of the photovoltaic inverter is improved.
In the embodiment of the invention, the heat dissipation assembly comprises a first heat dissipation assembly and a second heat dissipation assembly, the first heat dissipation assembly comprises a first heat conduction plate 5, first fins 6, a base tube 8 and a fan 7, the first heat conduction plate 5 is tightly attached to the back of the shell 1 and fixedly connected with the shell, the base tube 8 is arranged on the first heat conduction plate 5 in a roundabout manner, the base tube 8 is provided with a plurality of first fins 6 in parallel, the fan 7 is arranged along the gap direction of the adjacent first fins 6, and the inlet and outlet ends of the base tube 8 are communicated with the two ends of the spiral coil 4 through a condensation pipe 13.
The fan 7 is connected with the circuit board 3, and when the temperature sensor detects that the surface temperature of the circuit board 3 exceeds a set threshold value, the fan 7 is controlled to be started, cold air is blown out, and the condensate carrying heat is cooled.
Furthermore, the number of the fans 7 is at least two, and the fans are fixedly arranged on the heat conduction plates on the same sides of the fins. When the temperature of the circuit board 3 is too high and one fan 7 cannot cool down in time, the two fans 7 are started to cool down simultaneously, and heat is rapidly dissipated to the air.
In the embodiment of the present invention, the heat dissipation assembly further includes a second heat dissipation assembly, the second heat dissipation assembly includes a second heat conduction plate 9, second fins 10 and a fan 7, the second heat conduction plate 9 is tightly attached to the back surface of the housing 1 and fixedly connected thereto, the plurality of second fins 10 are disposed on the second heat conduction plate 9 in parallel, the fan 7 is disposed along the gap direction between adjacent first fins 6, the second heat conduction plate 9 has a mounting portion 11, the mounting portion 11 is provided with a heating element 12, the heating element 12 is a switching tube (IGBT, MOSfet), a magnetic core element (inductor, transformer), and the like, and the heating element 12 is connected to the circuit board 3 through a wire.
In addition, a sun shield 19 is detachably arranged on the shell 1 above the heat dissipation assembly, and the sun shield 19 is arranged obliquely downwards and forms an included angle of 60-85 degrees with the outer surface of the shell 1. The sun shield 19 can well isolate direct irradiation of sunlight, so that the influence of the sunlight on the heat dissipation assembly is reduced, and the heat exchange efficiency is improved.
For convenience of explaining an operation method of the photovoltaic inverter heat dissipation structure, a range exceeding a safe temperature is divided into a plurality of intervals, which are respectively defined as 4 intervals of low, medium, high and ultrahigh gears, and an operation state of the temperature in each interval is shown in the following table:
| temperature of | Movement of |
| Is low in | K1 is on, K2, G, F1 and F2 are off |
| In | K1, F1 are on, K2, G, F2 are off |
| Height of | K1, F1 and F2 are turned on, and K2 and G are turned off |
| Super high | K2, G, F1, F2 are on, K1 is off |
Note: a first valve K1, a second valve K2, a circulating pump G, and fans F1 and F2.
As described above, when the temperature is in the low range, the circuit board 3 controls the first valve K1 to be opened, and the second valve K2, the circulation pump G, the fan F1 and the fan F2 are closed. The condensate in the condenser pipe 13 flows into the first heat-conducting plate 5 from the spiral coil 4 under the action of pressure difference to exchange heat, and the first heat-conducting plate 5 is cooled under the action of natural wind. Low heat exchange effect and no electric energy consumption.
When the temperature is in the middle gear range, the first valve K1 and the fan F1 are controlled to be opened, and the second valve K2, the circulating pump G and the fan F2 are controlled to be closed. The condensate in the condensation pipe 13 flows into the first heat conduction plate 5 from the spiral coil 4 under the action of pressure difference for heat exchange, and the first heat conduction plate 5 is cooled by the action of the fan F1. The heat exchange effect is general, and the electric energy consumption is low.
When the temperature is in a high-range region, the first valve K1, the fan F1 and the fan F2 are controlled to be opened, and the second valve K2 and the circulating pump G are controlled to be closed. The condensate in the condensation pipe 13 flows into the first heat conduction plate 5 from the spiral coil 4 under the action of pressure difference for heat exchange, and the first heat conduction plate 5 is cooled under the combined action of the fans F1 and F2. The heat exchange effect is good, and the electric energy consumption is general.
When the temperature is in the ultra-high range, the first valve K1 is controlled to be closed, and the second valve K2, the circulating pump G, the fan F1 and the fan F2 are controlled to be opened. The condensate in the condensation pipe 13 flows into the first heat conduction plate 5 from the spiral coil 4 under the action of the circulating pump 16 for heat exchange, and the first heat conduction plate 5 is cooled under the combined action of the fans F1 and F2. The heat exchange effect is excellent and the electric energy consumption is large.
In summary, the present invention provides a heat dissipation structure for a photovoltaic inverter, which has the following beneficial effects: the spiral coil 4 is attached to the circuit board 3, the heat dissipation assembly is arranged on the back face of the shell 1, and the spiral coil 4 and the heat dissipation assembly are connected through the condenser pipe 13 to form a heat pipe heat dissipation structure, so that heat generated on the circuit board 3 is quickly conducted to the outside of the shell 1 through condensate in the condenser pipe 13, and the cooling effect is obvious; the condenser pipe 13 is provided with a circulating pump 16, and when the flow rate of the liquid in the condenser pipe 13 is slow, the circulating pump 16 is started to perform forced circulation, so that the heat dissipation effect is enhanced; the high-temperature heating element 12 such as the inductor is moved to the outside of the shell 1 and is connected with the metal fins, and the fan 7 is used for cooling if necessary, so that the temperature of the surface of the heating element 12 is greatly reduced.
The technical scope of the present invention is not limited to the above description, and those skilled in the art can make various changes and modifications to the above-described embodiments without departing from the technical spirit of the present invention, and such changes and modifications should fall within the protective scope of the present invention.
Claims (10)
1. The photovoltaic inverter heat dissipation structure is characterized by comprising a shell, a panel arranged at the front part of the shell, a heat dissipation assembly arranged at the back of the shell, and a circuit board arranged in the shell;
the circuit board is attached with a spiral coil, and the spiral coil is connected with the radiating assembly through a condensation pipe and used for conducting heat.
2. The pv inverter heat dissipation structure of claim 1, wherein the heat dissipation assembly comprises a first heat dissipation assembly, the first heat dissipation assembly comprises a first heat conduction plate, first fins, a base tube and a fan, the first heat conduction plate is attached to the back of the housing and is fixedly connected to the back of the housing, the base tube is arranged on the first heat conduction plate in a winding manner, the base tube is provided with a plurality of first fins in parallel, the fan is arranged along a gap direction between the adjacent first fins, and an inlet and an outlet of the base tube are communicated with two ends of the spiral coil through a condensation tube.
3. The pv inverter heat dissipation structure of claim 2, wherein the number of the fans is at least two, and the fans are fixedly disposed on the heat conduction plates on the same side of the fins.
4. The pv inverter heat dissipation structure of claim 1, wherein the heat dissipation assembly further comprises a second heat dissipation assembly, the second heat dissipation assembly comprises a second heat conduction plate, a second fin and a fan, the second heat conduction plate is tightly attached to the back of the housing and fixedly connected to the back of the housing, the second fins are arranged on the second heat conduction plate in parallel, the fan is arranged along the gap direction between the adjacent first fins, the second heat conduction plate has an installation portion, the installation portion has a heating element, and the heating element is connected to the circuit board.
5. The pv inverter heat dissipation structure of claim 1, wherein the condenser tube has a first valve mounted thereon for controlling the on/off of the condenser tube.
6. The pv inverter heat dissipation structure of claim 1, wherein the condenser tube is connected in parallel to a circulation pump via a pipe, and a second valve is disposed on the pipe at the inlet end of the circulation pump.
7. The pv inverter heat dissipation structure of claim 1, wherein the spiral coil has a coil inlet and a coil outlet, the coil inlet is located in the center of the spiral coil and extends upward and is curved to connect to the outlet of the condenser tube, and the coil outlet is connected to the outlet of the condenser tube.
8. The pv inverter heat dissipation structure of claim 1, wherein the spiral coil is attached to the back side of the circuit board by a heat conductive layer, the heat conductive layer being an electrical conduction preventing material.
9. The pv inverter heat dissipation structure of claim 1, wherein a waterproof seal is disposed at a junction of the condenser tube and the casing.
10. A heat dissipation method for a heat dissipation structure of a pv inverter as claimed in any one of claims 1 to 9, wherein the circuit board is provided with an infrared sensor for monitoring the temperature on the circuit board, and the temperature exceeding the set temperature is divided into a plurality of intervals, which are respectively defined as 4 intervals of low, medium, high and ultrahigh levels, the method comprising the steps of:
when the temperature is in a low-grade range, the first valve is controlled to be opened through the circuit board, and the second valve, the circulating pump, the fan F1 and the fan F2 are closed;
when the temperature is in the middle range, controlling the first valve and the fan F1 to be opened, and controlling the second valve, the circulating pump and the fan F2 to be closed;
when the temperature is in a high-grade interval, controlling the first valve, the fan F1 and the fan F2 to be opened, and controlling the second valve and the circulating pump to be closed;
and when the temperature is in the ultra-high range, controlling the first valve to be closed, and controlling the second valve, the circulating pump, the fan F1 and the fan F2 to be opened.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010893819.0A CN111988967B (en) | 2020-08-31 | 2020-08-31 | Photovoltaic inverter heat dissipation structure and method thereof |
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| CN202010893819.0A CN111988967B (en) | 2020-08-31 | 2020-08-31 | Photovoltaic inverter heat dissipation structure and method thereof |
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| CN111988967B CN111988967B (en) | 2022-10-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112682985A (en) * | 2020-12-18 | 2021-04-20 | 珠海格力电器股份有限公司 | Heat dissipation system for driving module, air conditioner and control method |
| CN117039269A (en) * | 2023-10-10 | 2023-11-10 | 深圳市德兰明海新能源股份有限公司 | Energy storage system, temperature control method thereof and computer readable storage medium |
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| CN205283413U (en) * | 2015-11-24 | 2016-06-01 | 国家电网公司 | Dc -to -ac converter intelligence heat radiation structure |
| CN106357127A (en) * | 2016-10-26 | 2017-01-25 | 湖北盛弘电力技术开发有限公司 | Box-type photovoltaic inverter |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112682985A (en) * | 2020-12-18 | 2021-04-20 | 珠海格力电器股份有限公司 | Heat dissipation system for driving module, air conditioner and control method |
| CN117039269A (en) * | 2023-10-10 | 2023-11-10 | 深圳市德兰明海新能源股份有限公司 | Energy storage system, temperature control method thereof and computer readable storage medium |
| CN117039269B (en) * | 2023-10-10 | 2024-01-12 | 深圳市德兰明海新能源股份有限公司 | Energy storage system, temperature control method thereof and computer readable storage medium |
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