CN201846224U

CN201846224U - Inverter box body

Info

Publication number: CN201846224U
Application number: CN2010205879370U
Authority: CN
Inventors: 陈佳健; 刘远明
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2010-10-28
Filing date: 2010-10-28
Publication date: 2011-05-25
Anticipated expiration: 2020-10-28

Abstract

The utility model discloses a rainproof and dustproof design scheme for a photovoltaic inverter box, which is characterized in that the box structure of the inverter is divided into upper and lower layers, the bottom layer of the box is placed with transformers, reactors and capacitor elements, and the upper layer The box is equipped with a circuit board and an EMC module. There is an air inlet on the left side of the bottom box, and an air outlet on the box near the left side at the bottom. A fan is used to ensure sufficient air flow in the box. The windshield is added to form an air duct, which is conducive to the air flow inside the bottom box, and the air is discharged from the air outlet. The fan is used together with the filter and the rain cover to ensure the IP protection level of the cabinet. The radiator is fixed on the right side of the cabinet to dissipate heat for the IPM module. The gap between the radiator and the cabinet is sealed with glue to ensure the protection level. The radiator is added with a shell for protection, and the fixed fan on the upper part of the shell blows air downwards to enhance heat dissipation.

Description

A kind of inverter casing

Technical field

The utility model relates to a kind of inverter, particularly a kind of inverter casing of rain-proof dust-proof.

Background technology

At present, solar energy is a kind of as new and renewable sources of energy, because of its clean environment firendly, never depleted characteristics, has been subjected to countries in the world energy experts' favor, and has been called " gold " by the insider.

Photovoltaic generating system is to utilize solar cell directly solar energy converting to be become the electricity generation system of electric energy.Its critical piece is solar cell, storage battery, controller and inverter.Be characterized in reliability height, long service life, free from environmental pollution, can independently generate electricity and can be incorporated into the power networks, be subjected to the favor of every industry or trade's tissue, have vast potential for future development.

Photovoltaic DC-to-AC converter is a photovoltaic generating system core power regulating element, occupies the system cost ratio at 10-15%, and higher technology content is arranged.The electronic devices and components of photovoltaic DC-to-AC converter all are encapsulated in the inverter casing; can play the effect of firm and protection component; but components and parts are encapsulated in the narrow space; problem shows especially out thereupon; the subject matter of inverter casing existence at present is to guarantee the heat radiation of components and parts in the casing and the IP degree of protection of casing; can not prevent that rainwater and dust from entering casing, and then components and parts are caused damage.

The existing inverter casing be in the casing front or the side open heat dissipation channel guarantee the heat radiation, the dust water droplet is easy to enter casing by heat dissipation channel, very easily causes internal short circuit fault.For the improvement of heat radiation, Chinese patent mandate publication number is the utility model application of CN201038991, and outstanding inventive point is 90 ° of air channel designs, cut jagged in the middle of the fin, form wind guide tank, be beneficial to heat radiation, but be difficult to like this guarantee that rainwater or dust can not enter casing.Because the photovoltaic DC-to-AC converter operational environment is relatively more abominable sometimes, usually can run into when arranging in the open, wind and weather also is not enough even good heat radiation is arranged like this, rainproof and dustproof problem can not be ignored.

The utility model content

The inverter casing can not prevent effectively that rainwater or dust from entering the problem of casing to the utility model in the prior art in order to solve, and a kind of inverter casing of rain-proof dust-proof is provided.

A kind of inverter casing, described casing is divided into layer box body and bottom casing by barricade, the bottom casing is provided with transformer from left to right successively, electric capacity, direct current reactor and AC reactor, last layer box body is provided with circuit board and EMC module, the EMC module is the english abbreviation of Electro Magnetic Compatibility module, on bottom tank wall left side, be provided with at least one air inlet, the air inlet place is provided with fan, the tank wall adjacent with the left side is provided with at least one air outlet, described inverter casing also comprises rain cover and screen pack, described rain cover is fixedly connected on the outside of air inlet, described rain cover offers a through hole that is used for air intake over against the air inlet place, described through hole is provided with the stator that is used for fixing screen pack, and described screen pack is fixed on by stator on the through hole of described rain cover and over against air inlet; The outside of described air outlet also is set with screen pack.

The rain cover of described inverter casing is provided with the opening that is connected with through hole, and the direction towards with the air inlet air intake of described opening is an angle of 90 degrees.

The end that described bottom casing closes on the right side is equipped with at least two deep beads, forms air duct between the adjacent deep bead, and described air duct one end is relative with air inlet, and the other end is relative with air outlet.

Described deep bead is arranged on the barricade, and described deep bead is an arc wind board.

Described inverter casing also comprises the IPM module, and the IPM module is that the English of Intelligent Power Module is called for short, and the IPM module is arranged on the inwall on inverter casing right side, on the cabinet exterior of IPM module position correspondence, is provided with radiator.

The described radiator outside is provided with protecting sheathing, and described protecting sheathing and radiator are fastenedly connected.

Described radiator comprises a slice fin at least.

The inboard end of the protecting sheathing of described radiator is provided with the fan to the inner blowing of radiator.

Described barricade is positioned at the casing centre position.

In the above technical scheme, after by a side at least one air inlet being set at the inverter casing, use stator screen pack to be fixed on the through hole of rain cover, rain cover is fixedly installed on the corresponding air inlet cabinet exterior, fan then is fixed on the corresponding air inlet cabinet wall, and an end of rain cover links to each other with outside air, on the same straight line of the center line of screen pack, air inlet, fan.Make the wind that enters cavity earlier through filtering, so just play the dust removal by filtration effect, to guarantee the IP degree of protection of casing.Outside air enters the direction of rain cover cavity with at an angle to each other with the direction of casing air inlet air intake, preferably be an angle of 90 degrees, so improve radiating efficiency having under the situation of sufficient air capacity, strengthened the function of rain-proof dust-proof again effectively, moreover also outside IPM module corresponding housing, install radiator additional, and fan attachment strengthened heat radiation greatly to the fin up-draught of radiator inside, thereby also improved the useful life of inverter.

Description of drawings

Fig. 1 is the bottom casing components and parts layout plan of a kind of embodiment of the utility model inverter casing;

Fig. 2 is the last layer box body components and parts layout plan of a kind of embodiment of the utility model inverter casing;

Fig. 3 is the stereochemical structure decomposing schematic representation of a kind of embodiment of the utility model inverter casing;

Fig. 4 is the rain cover of a kind of embodiment of the utility model inverter casing, the package assembly decomposing schematic representation of screen pack and fan;

Fig. 5 is the structural representation at another visual angle of Fig. 4;

Fig. 6 is the outside drawing of a kind of embodiment of the utility model inverter casing;

Fig. 7 is the bottom casing air channel schematic diagram of a kind of embodiment of the utility model inverter casing.

Embodiment

Clearer for technical problem, technical scheme and beneficial effect that the utility model is solved, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.

In conjunction with illustrated in figures 1 and 2, the utility model provides a kind of inverter casing, described casing is divided into layer box body and bottom casing by barricade, following layer box body is provided with transformer 1 from left to right successively, electric capacity 2, direct current reactor 9 and AC reactor 3, last layer box body is provided with circuit board 13 and EMC module 12, on bottom casing left side, be provided with an air inlet, the air inlet place is provided with fan 11, the tank wall adjacent with the left side is provided with an air outlet, described inverter casing also comprises rain cover 4 and screen pack 8, as shown in Figure 4 and Figure 5, described rain cover 4 is fixedly connected on the outside of air inlet, described rain cover 4 offers a through hole that is used for air intake over against the air inlet place, described through hole is provided with the stator 17 that is used for fixing screen pack, and described screen pack 8 is fixed on by stator 17 on the through hole of described rain cover 4 and over against air inlet; The outside of described air outlet also is set with screen pack 8.

Cooling describes to casing below in conjunction with Fig. 7, air is at the circulation path of box house: cool ambient air → rain cover → air inlet screen pack carries out dedusting → fan → transformer → electric capacity → AC reactor → direct current reactor → deep bead → air outlet screen pack → ambient atmosphere, the use in fan and air channel can strengthen the circulation of air of box house greatly, thereby takes away the heat that components and parts produce.

As shown in Figure 1, as an improvement, increase deep bead 4, the parallel placement of three strip metal sheets back forms the air channel, and the one end is relative with air inlet, and the other end is relative with air outlet, be that the both ends open direction is at an angle to each other, preferably be an angle of 90 degrees, be beneficial to air and flow to air outlet, from the air outlet air-out by air inlet.

As shown in Figure 3; preferred version as one; described inverter casing also comprises IPM module 6; IPM module 6 is arranged on the inwall on inverter casing right side, on the cabinet exterior of IPM module 6 position correspondences, is provided with radiator 7; there is protecting sheathing in the radiator outside; protecting sheathing and radiator are fastenedly connected, and with the glue sealing, have guaranteed degree of protection between radiator and the casing.Radiator adds protecting sheathing 5; prevent that extraneous bad bump from causing heating panel to damage; shield; in addition; the inboard end of the protecting sheathing of radiator 7 is provided with fan, is used for blowing a cold wind on the fin of radiator inside, install protecting sheathing additional after; the air-out that can limit fan is discharged to the external world by the fin end to end, strengthens thermolysis greatly.

As shown in Figure 2, barricade 15 is arranged in the middle of the inverter, upper strata fixing circuit board 13, IPM module 6 and EMC module 12, adopt barricade 15 and lower floor separately, the barricade between the levels can shield the interference of components and parts such as bottom transformer, reactor to circuit board, can also stop the heat of bottom upwards to distribute, avoid the bottom heat to pass to the upper strata, add sealing strip 14 between loam cake 16 and the casing, to guarantee the IP degree of protection of casing.

After by a side air inlet being set at inverter bottom casing, screen pack 8 is fixed on the through hole of rain cover 10 by stator 17, rain cover 10 is fixedly installed on the corresponding air inlet cabinet exterior, fan attachment 11 then on corresponding air inlet cabinet wall, screen pack 8, air inlet, on the same straight line of the center line of fan 11, outside air enters the direction of rain cover cavity with at an angle to each other with the direction of casing air inlet air intake, here preferably be an angle of 90 degrees, rain cover links to each other with outside air, the wind that enters cavity that makes is earlier through filtering, so just play the dust removal by filtration effect, to guarantee the IP degree of protection of casing.IPM module 6 is arranged on the inwall that casing closes on right side one side, on the cabinet exterior of 6 position correspondences of IPM mould, is provided with radiator 7; radiator 7 arranged outside protecting sheathings 5; protecting sheathing 5 is fastenedly connected with radiator 7, with the glue sealing, guarantees the IP degree of protection between radiator 7 and the casing.Radiator 7 adds outer 5 shells of protection; prevent that extraneous bad bump from causing heating panel to damage; shield; in addition; the inboard end of the protecting sheathing of radiator is provided with fan 11, and fits tightly with fin one end, and fan attachment 11 is to the fin blowing of radiator inside; after installing protecting sheathing 5 additional, the air-out that can limit fan 11 is discharged to the external world by the fin end to end.So improve radiating efficiency having under the situation of sufficient air capacity, strengthened the function of rain-proof dust-proof again effectively, thus the useful life of also having improved inverter.

The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.

Claims

1. A kind of inverter box body, described box body is divided into upper layer box body and bottom layer box body by shielding plate, bottom box body is provided with transformer (1), capacitor (2), DC reactor successively from left to right (9) and AC reactor (3), the upper box is provided with a circuit board (13) and an EMC module (12), and at least one air inlet is provided on the left box wall of the bottom box, and a fan is arranged at the air inlet (11), at least one air outlet is provided on the box wall adjacent to the left side box wall, and it is characterized in that the inverter box body also includes a rainproof cover (10) and a filter screen (8) , the rainproof cover (10) is fixedly connected to the outside of the air inlet, and the rainproof cover (10) is provided with a through hole for air intake facing the air inlet, and the through hole is provided with a filter for fixing The fixed sheet (17) of the net (8), the filter screen (8) is fixed on the through hole of the rainproof cover (10) by the fixed sheet (17) and faces the air inlet; the outside of the air outlet Also fixedly be provided with filter screen (8).

2. The inverter box according to claim 1, characterized in that, the rainproof cover (10) is provided with an opening communicating with the through hole, and the direction of the opening is 90° to the direction of the air inlet. degree angle.

3. The inverter box according to claim 1, characterized in that, at least two windshields (4) are installed on the end of the bottom box near the right side, and ventilation is formed between adjacent windshields. One end of the air passage is opposite to the air inlet, and the other end is opposite to the air outlet.

4. The inverter box according to claim 3, characterized in that, the windshield is arranged on the shielding plate (15), and the windshield is an arc-shaped windshield.

5. The inverter box according to claim 1, characterized in that, the inverter box also includes an IPM module (6), and the IPM module (6) is arranged on the right box wall of the inverter box On the inner wall of the IPM module (6), a radiator (7) is arranged on the outer wall of the box wall corresponding to the position of the IPM module (6).

6. The inverter box according to claim 5, characterized in that a protective shell (5) is provided outside the radiator (7), and the protective shell (5) is fastened to the radiator (7) connect.

7. The inverter box according to claim 5, characterized in that the radiator (7) comprises at least one cooling fin.

8 . The inverter box according to claim 6 , characterized in that, a fan ( 11 ) for blowing air to the radiator ( 7 ) is provided at one end inside the protective casing ( 5 ) of the radiator ( 7 ).

9. The inverter box according to claim 1, characterized in that, the shielding plate (15) is located in the middle of the inverter box.