CN103187893B - The cooling structure of photovoltaic inverter and the type of cooling - Google Patents

The cooling structure of photovoltaic inverter and the type of cooling Download PDF

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Publication number
CN103187893B
CN103187893B CN201110458197.XA CN201110458197A CN103187893B CN 103187893 B CN103187893 B CN 103187893B CN 201110458197 A CN201110458197 A CN 201110458197A CN 103187893 B CN103187893 B CN 103187893B
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China
Prior art keywords
cooling
deck
inverter
fin
air
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Expired - Fee Related
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CN201110458197.XA
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Chinese (zh)
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CN103187893A (en
Inventor
章伟康
朋泰彧
褚君浩
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SHANGHAI YIFU NEW ENERGY TECHNOLOGY CO LTD
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SHANGHAI YIFU NEW ENERGY TECHNOLOGY CO LTD
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Publication of CN103187893A publication Critical patent/CN103187893A/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy
    • Y02E10/56Power conversion systems, e.g. maximum power point trackers

Abstract

The invention discloses cooling structure and the type of cooling of photovoltaic inverter, the convection current air inlet duct of its both sides primarily of cooling cabin and bottom and the heat dissipation wind channel composition of rear deck.Gas channel is run through in the centre between inverter front deck and rear deck in main air duct system.Auxiliary air channel is positioned at inverter rear deck, divides be clipped to air outlet and cooling cabin air exhaust slot formation auxiliary heat dissipation air channel from air inlet.For meeting cooling down requirement under high ambient conditions, fan is adopted to carry out forced air cooling heat radiation.The multiple duct type of cooling of the present invention can solve the radiating and cooling deficiency that traditional heat sinks mode exists, and causes inverter to cause fault and equipment breakdown because of overheated, or makes the problems such as inverter life-span minimizing.

Description

The cooling structure of photovoltaic inverter and the type of cooling
Technical field
The present invention relates to photovoltaic network inverter technology, be specifically related to the cooling structure of photovoltaic inverter and one from the type of cooling.
Background technology
In new forms of energy, solar energy, as a kind of regenerative resource most with prospects of efficient pollution-free, has become an important component part in current energy resource supply, and the main stream that the solar energy of photovoltaic effect becomes regenerative resource has been development trend.
Photovoltaic DC-to-AC converter is key equipment in solar photovoltaic generation system.Weigh the quality of a photovoltaic DC-to-AC converter, except the technical indicator that some are important, in specific inversion consumption with under running febrile state, the temperature reducing inverter heater element is to greatest extent an important technology of inverter progress.
The difficult point of current photovoltaic DC-to-AC converter cooling technology is mainly manifested in the following aspects:
1, for the single-phase photovoltaic inverter of small-power (1KW-6KW), only rely on the radiator of traditional approach to carry out natural heat dissipation and cannot meet design requirement.Special in power is greater than certain power as 3KW, the general temperature rise of thermally-stabilised rear radiator is very high.Therefore easily produce potential safety hazard and reduce the life-span of electronic devices and components.
If 2 rely on air blast cooling, then can reduce the security reliability of invertor operation, affect the runnability of inverter, and the manufacturing cost of inverter can be improved.
3, adopt the larger radiator of area of dissipation or can improve heat dissipating state with the better material of the coefficient of conductivity, but this can increase inverter volume, improve manufacturing cost and the operating cost of inverter, the universal use in photovoltaic DC-to-AC converter is unfavorable.
Summary of the invention
The present invention is directed to the defect of existing photovoltaic inverter existing in cooling technology, and a kind of cooling structure of photovoltaic inverter is provided.This cooling structure is low cost, multiple duct cooling structure based on natural heat dissipation, and addition of auxiliary forced air cooling device, it can solve and adopt traditional heat sinks to there is radiating and cooling deficiency, cause inverter to cause fault and equipment breakdown because of overheated, or make the problems such as inverter life-span minimizing.
In order to achieve the above object, the present invention adopts following technical scheme:
The cooling structure of photovoltaic inverter is made up of front deck, center-aisle and rear deck, and this cooling structure comprises:
Heat radiation main air duct, described heat radiation main air duct is the middle penetrating via between inverter front deck and rear deck, is provided with a plurality of fin in this heat radiation main air duct;
The auxiliary air channel of heat radiation, it is inner that described heat radiation assists air channel to be positioned at inverter rear deck, comprise ventilating opening, air channel, described air channel is through transformer, reactor installation site, and be communicated with heat radiation main air duct top and air exhaust slot by radiation tooth gap in rear deck, described ventilating opening is opened in rear deck both sides, and is communicated with air channel.
In the example of such scheme, described cooling structure also comprises blower fan, and described assembling is in rear deck on radiation tooth.
Further, described blower fan inclination certain angle is as 30 degree of installations.
Further, the fin in described heat radiation main air duct is the distributions of upper and lower two parts, and superposed fin in longitudinally equidistantly arrangement, and is connected as a single entity with nose nacelle bottom board; The fin being positioned at bottom is the oblique symmetric arrays of herringbone, and reserves gas channel in centre.
Further, described fin is dentation fin.
As the second object of the present invention, the present invention also provides a kind of type of cooling of photovoltaic inverter, and the described type of cooling is multiple duct natural heat dissipation mode, and concrete mode is as follows:
The fin on heat radiation main air duct top distributes the heat of inverter power device loss generation by convection current and radiation mode; Lower part is that the air-flow introduced from both sides, bottom and bottom of the fin of the oblique symmetric arrays of herringbone collects at middle air flue, and then flows to top fin, is taken away by the heat that top fin convection current is distributed and discharges cabinet; Heat radiation in rear deck assists air channel that air-flow is introduced heat radiation main air duct, carry out auxiliary heat dissipation, and the heat distributed by radiation tooth in rear deck discharges cabinet by ventilating opening.
Further, the described type of cooling also comprises carries out compulsory type radiating mode by blower fan, by blower fan, the gas channel that heating region heat is middle on heat radiation main air duct is discharged cabinet.
According to the present invention that such scheme obtains, there is following characteristics:
(1) the auxiliary flow path structure running through gas channel and rear deck primarily of the centre of cooling cabin provides, by the whole radiator of cabinet, for inverter provides more efficient multiple duct natural heat dissipation.
(2) in the rear deck being provided with transformer and reactor, devise auxiliary flow path, add the heat loss through convection of secondary air to rear deck and cooling cabin the first half fin.
(3) rear deck arranges cooling blower, can carry out forced air cooling if desired to the heating region of power component, to guarantee that under disadvantageous high temperature natural environment inverter does not occur because natural heat dissipation is not enough overheated.
Accompanying drawing explanation
The present invention is further illustrated below in conjunction with the drawings and specific embodiments.
Fig. 1 is photovoltaic inverter cabinet appearance schematic diagram.
Fig. 2 is cabinet cooling cabin structural representation.
Fig. 3 is cabinet rear deck heat dissipation wind channel schematic diagram.
Embodiment
The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the present invention further.
See Fig. 1, the cabinet of whole photovoltaic inverter is made up of front deck 1, rear deck 2 and cooling cabin 3.Wherein the centre of cooling cabin is run through gas channel and nose nacelle bottom board 14 and rear deck 2 and is integrated, and provides the heat radiation of inverter as entirety.
The cooling structure of photovoltaic inverter provided by the invention mainly comprises heat radiation main air duct and the auxiliary air channel of heat radiation.
See Fig. 2, heat radiation main air duct is arranged in cooling cabin 3, is specially the middle penetrating via between inverter front deck 1 and rear deck 2, is provided with a plurality of dentation fin 4,5,6 simultaneously in this heat radiation main air duct.
Be divided into upper and lower two parts in these fin 4,5,6 heat radiation main air duct, be wherein positioned at the fin 4 of the first half in longitudinally equidistantly arrangement, and nose nacelle bottom board 14 be integrated.Gap between the fin 4 of the first half forms air exhaust slot, to be discharged by hot blast in time.
The latter half fin 5,6 in the oblique symmetric arrays of herringbone, and reserves gas channel 15 in centre.Gap between the fin 5,6 of the left and right sides forms guiding gutter, cooling cabin the latter half fin 5,6 is made to have water conservancy diversion convergence effect, outer gas stream is drained to centre and runs through gas channel 15, convection current after confluxing flows through the heating region of power component 7, together with the convection current entered bottom cooling cabin, the heat that just heating region is discharged is taken away rapidly from air exhaust slot, the fin of cooling cabin the first half and nose nacelle bottom board.
See Fig. 3, it is inner that the auxiliary air channel of heat radiation is positioned at inverter rear deck, comprises ventilating opening 10, air channel 16 two parts.Wherein air channel 16 is made up of transformer 12, reactor 11 installation site, is communicated with and is communicated with heat radiation main air duct by radiation tooth 8 gap on rear deck top with the air inlet 13 bottom rear deck.
Rear deck both sides are provided with ventilating opening 10 simultaneously, the radiation tooth 8 in rear deck can be helped better heat to be discharged cabinet.
On the basis of such scheme, the present invention is also provided with the blower fan 9 carrying out forced air cooling at cabinet rear deck, makes inverter that multiple duct natural heat dissipation and blower fan forced air cooling can be adopted to dispel the heat two kinds of cooling work modes.This blower fan 9 Oblique 45 Degree is arranged in rear deck on radiation tooth 8, after opening blower fan, rapidly heating region heat is run through gas channel through centre and discharges cabinet, reach cooling requirements.
According to the cooling structure that such scheme is formed, adopt multiple duct from the type of cooling, comprise natural heat dissipation mode and compulsory type radiating mode two kinds:
1, natural heat dissipation
See Fig. 2, the heat conduction that inverter power device 7 loss produces by base plate 14 is to first half groups of fins 4, by convection current and radiation mode, first half groups of fins 4 pairs of base plates and inverter power device are lowered the temperature, and the air exhaust slot of heat between fin 4 that groups of fins 4 is distributed is discharged out of my cabin.
The latter half fin 5,6 is in the oblique symmetric arrays of herringbone, centre has gas channel 15, cold wind enters into the guiding gutter of fin 5,6 from both sides, bottom and bottom, by guiding gutter, cold wind is pooled in middle gas channel 15, the vertical fin 4 in top is flowed to via circulation road 15, by the air exhaust slot between vertical fin 4, hot blast is discharged out of my cabin, strengthen top heat loss through convection cooling-down effect.
See Fig. 3, the auxiliary air channel of heat radiation is divided from rear deck air inlet 13 to air outlet 10 with to three tunnels trends such as air exhaust slots between cooling cabin top radiation tooth 8.When rear deck is operated in natural heat dissipation mode, convection current flows into from air inlet 13, walks around the left and right and upper end gas channel 16 of transformer 12 and reactor 11, flows to the air outlet 10 of the left and right sides above rear deck, forms auxiliary air channel and dispels the heat; Flow to again the air exhaust slot above cooling cabin simultaneously, form another auxiliary air channel and dispel the heat, play the auxiliary effect accelerating top heat loss through convection.The ad hoc structure of inverter chassis design provides the equivalent area of dissipation of large scale, the thermal conductance of inverter internal heating element is gone out more effective.Meanwhile, multiple duct drainage cooling strengthens heat loss through convection, in conjunction with the whole radiator that inverter cabinet provides, makes multiple duct have significant radiating and cooling effect from the type of cooling.
2, compulsory type heat radiation
During when natural environmental condition is severe, as inverter run in high temperature environments time, natural heat dissipation can not meet designing requirement, takes compulsory type radiating mode.Blower fan 9 is mounted to by suitable inclination angle can to rear deck and cooling cabin the first half fin and the high effect forced air-cooled position of front deck heating region base plate, to reach the effect that cools fast after starting fan.Wherein after blower fan 9 starts, cold wind flows into bottom rear deck, through air inlet 13, walk around transformer 12, blower fan that reactor 11 side and top are formed forces air channel to flow to vertical fin, then hot blast is discharged by air exhaust slot above cooling cabin.Rapidly heating region heat can be run through gas channel like this through centre and discharge cabinet, reach cooling requirements.
More than show and describe general principle of the present invention, principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection range is defined by appending claims and equivalent thereof.

Claims (6)

1. the cooling structure of photovoltaic inverter, is characterized in that, described cooling structure comprises:
Heat radiation main air duct, described heat radiation main air duct is the middle penetrating via between inverter front deck and rear deck, is provided with a plurality of fin in this heat radiation main air duct; Fin in described heat radiation main air duct is the distributions of upper and lower two parts, and superposed fin in longitudinally equidistantly arrangement, and is connected as a single entity with nose nacelle bottom board; The fin being positioned at bottom is the oblique symmetric arrays of herringbone, and reserves gas channel in centre;
The auxiliary air channel of heat radiation, it is inner that described heat radiation assists air channel to be positioned at inverter rear deck, comprise ventilating opening, air channel, described air channel is through transformer, reactor installation site, and be communicated with heat radiation main air duct top and air exhaust slot by radiation tooth gap in rear deck, described ventilating opening is opened in rear deck both sides, and is communicated with air channel.
2. the cooling structure of photovoltaic inverter according to claim 1, is characterized in that, described cooling structure also comprises blower fan, and described assembling is in rear deck on radiation tooth.
3. the cooling structure of photovoltaic inverter according to claim 2, is characterized in that, described blower fan inclination certain angle is installed.
4. the cooling structure of photovoltaic inverter according to claim 1, is characterized in that, described fin is dentation fin.
5. the type of cooling of photovoltaic inverter, is characterized in that, the described type of cooling is natural heat dissipation mode, and concrete mode is as follows:
The fin on heat radiation main air duct top distributes the heat of inverter power device loss generation by convection current and radiation mode; Lower part is that the air-flow introduced from both sides, bottom and bottom of the fin of the oblique symmetric arrays of herringbone collects at middle air flue, and then flows to top fin, is taken away by the heat that top fin convection current is distributed and discharges cabinet; Heat radiation in rear deck assists air channel that air-flow is introduced heat radiation main air duct, carry out auxiliary heat dissipation, and the heat distributed by radiation tooth in rear deck discharges cabinet by ventilating opening.
6. the type of cooling of photovoltaic inverter according to claim 5, is characterized in that, the described type of cooling also comprises carries out compulsory type radiating mode by blower fan, by blower fan, the middle air flue of heating region heat on heat radiation main air duct is discharged cabinet.
CN201110458197.XA 2011-12-31 2011-12-31 The cooling structure of photovoltaic inverter and the type of cooling Expired - Fee Related CN103187893B (en)

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Families Citing this family (6)

* Cited by examiner, † Cited by third party
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CN104202953B (en) * 2014-09-24 2016-08-24 广州三晶电气有限公司 The heat abstractor of a kind of photovoltaic combining inverter and heat dissipating method
CN205356166U (en) * 2016-01-05 2016-06-29 中兴通讯股份有限公司 Be applied to photovoltaic inverter's heat radiation structure
CN107105595A (en) * 2016-02-19 2017-08-29 恩佐科技股份有限公司 Low blast demand, low noise, dynamical radiator are reached using radiator arrangement
EP3510635A1 (en) * 2016-09-21 2019-07-17 Huawei Technologies Co., Ltd. Heatsink
CN107918463B (en) * 2017-11-15 2020-08-21 常州信息职业技术学院 Computer machine case with heat dissipation function
CN210725817U (en) * 2019-09-04 2020-06-09 中兴通讯股份有限公司 Composite tooth radiator and communication base station

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CN201038635Y (en) * 2007-04-04 2008-03-19 合肥阳光电源有限公司 Photovoltaic/ wind power integration inversion device
CN201038991Y (en) * 2007-04-04 2008-03-19 合肥阳光电源有限公司 90 degree wind passage rotation of reverse conversion device of photovoltaic/wind power merged network
CN201260124Y (en) * 2008-09-02 2009-06-17 铁道部运输局 Heat radiating device for deflector
CN101764510A (en) * 2010-01-25 2010-06-30 苏州华辰电气有限公司 Air-cooled heat dissipation structure of high-power converter device
CN202043024U (en) * 2011-04-15 2011-11-16 福建联合动力机电科技有限公司 Radiating air channel shape of inverter in digital variable frequency generator

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201038635Y (en) * 2007-04-04 2008-03-19 合肥阳光电源有限公司 Photovoltaic/ wind power integration inversion device
CN201038991Y (en) * 2007-04-04 2008-03-19 合肥阳光电源有限公司 90 degree wind passage rotation of reverse conversion device of photovoltaic/wind power merged network
CN201260124Y (en) * 2008-09-02 2009-06-17 铁道部运输局 Heat radiating device for deflector
CN101764510A (en) * 2010-01-25 2010-06-30 苏州华辰电气有限公司 Air-cooled heat dissipation structure of high-power converter device
CN202043024U (en) * 2011-04-15 2011-11-16 福建联合动力机电科技有限公司 Radiating air channel shape of inverter in digital variable frequency generator

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