CN218042296U

CN218042296U - Heat dissipation device of photovoltaic inverter

Info

Publication number: CN218042296U
Application number: CN202222258635.4U
Authority: CN
Inventors: 沈爱兵
Original assignee: Shenzhen Hongrongxing Technology Co ltd
Current assignee: Shenzhen Hongrongxing Technology Co ltd
Priority date: 2022-08-25
Filing date: 2022-08-25
Publication date: 2022-12-13
Anticipated expiration: 2032-08-25

Abstract

The application discloses a heat dissipation device of a photovoltaic inverter, which comprises a hollow shell, wherein a top cover is arranged at the top of the hollow shell, a photovoltaic inverter body is installed in the shell, the top cover is provided with an installation hole, a heat dissipation box is arranged at the position of the top cover, which is positioned in the installation hole, the heat dissipation box is detachably installed on the top cover through a connection assembly, and a plurality of phase change crystal blocks are installed in the heat dissipation box; the radiating fin is arranged in the shell, and the top of the radiating fin is abutted to the radiating box. This application has the casing and dispels the heat simultaneously through fin and heat dissipation box, has improved the effect of the heat dispersion of photovoltaic inverter's casing.

Description

Heat dissipation device of photovoltaic inverter

Technical Field

The application relates to the technical field of photovoltaic inverters, in particular to a heat dissipation device of a photovoltaic inverter.

Background

The photovoltaic inverter is an inverter capable of converting variable direct-current voltage generated by the photovoltaic solar panel into alternating current with commercial power frequency, and can feed back the alternating current to a commercial power transmission system or be used by an off-grid power grid.

The photovoltaic inverter can generate a large amount of heat in the working process, so that the temperature of the inner cavity of the shell is higher and higher, electronic components in the photovoltaic inverter have rated working temperatures, and the performance and the service life of the electronic components can be reduced due to overhigh temperature, so that a heat dissipation structure needs to be designed to transfer the heat in the photovoltaic inverter; the photovoltaic inverter can be divided into a high-power photovoltaic inverter, a medium-power photovoltaic inverter and a low-power photovoltaic inverter according to different powers of the photovoltaic inverter, wherein the low-power photovoltaic inverter is a key part of a household independent alternating current system, a heat dissipation fan or a heat dissipation fin is mostly arranged inside the photovoltaic inverter in the conventional low-power photovoltaic inverter, a heat dissipation hole is formed in a shell, and a heat dissipation component inside the device transmits heat out through the heat dissipation hole in the shell.

In view of the above-mentioned related art, the inventor believes that the housing of the photovoltaic inverter radiates heat only through the heat radiation holes, and has a defect that the heat radiation performance of the housing is low.

SUMMERY OF THE UTILITY MODEL

In order to improve the heat dissipation performance of the photovoltaic inverter shell, the application provides a heat dissipation device of a photovoltaic inverter.

The application provides a heat abstractor of photovoltaic inverter adopts following technical scheme:

the heat dissipation device of the photovoltaic inverter comprises a shell and heat dissipation fins, wherein the shell is hollow, a top cover is arranged at the top of the shell, a photovoltaic inverter body is installed in the shell, the top cover is provided with an installation hole, a heat dissipation box is arranged at the position, located in the installation hole, of the top cover, the heat dissipation box is detachably installed on the top cover through a connection assembly, and a plurality of phase change crystal blocks are installed in the heat dissipation box; the radiating fins are arranged in the shell, and the tops of the radiating fins are abutted to the radiating box.

By adopting the technical scheme, the radiating fin and the radiating box can play a radiating role, and the radiating fin can directly transmit the heat of the photovoltaic inverter body to the radiating box; when the photovoltaic inverter body operates, the photovoltaic inverter body generates and releases heat, at the moment, the photovoltaic inverter body can perform natural cooling and heat dissipation through the heat dissipation holes on the shell, and can also perform heat dissipation through the heat dissipation fins and the heat dissipation box at the same time, at the moment, the heat in the shell is transferred to the heat dissipation box through the heat dissipation fins, and the heat dissipation box absorbs heat through the internal phase-change crystal block and is melted, so that the heat dissipation effect is realized; the phase change crystal blocks absorb heat for melting and release heat for crystallization, and can be recycled, so that the heat dissipation performance of the shell of the photovoltaic inverter is improved.

Optionally, the radiating fin is close to one side of casing has seted up the mounting groove, the photovoltaic inverter body includes: the power module is fixedly installed in the installation groove, and the transformer module is abutted to one side, far away from the shell, of the radiating fin.

Through adopting above-mentioned technical scheme, power module undertakes power change and energy transmission's important functional device in the photovoltaic inverter body, transformer module then plays the isolation, anti-interference and voltage transformation's function, and power module and transformer module are the main device that generates heat in the photovoltaic inverter body, long-time overtemperature duty can make power module and transformer module's life significantly reduce, power module has increased the area of contact with the fin through the mounting groove this moment, transformer module realizes the function of the heat direct transfer to the fin of release when self operates through the butt in one side of fin, thereby improve the radiating effect to power module and transformer module.

Optionally, the heat-conducting plate is installed to one side that the photovoltaic inverter body kept away from the top cap, one side butt of heat-conducting plate in the photovoltaic inverter body, the opposite side butt of heat-conducting plate in the lateral wall of casing, the casing corresponds the lateral wall of heat-conducting plate inlays and is equipped with a plurality of heat dissipation strip.

Through adopting above-mentioned technical scheme, when the photovoltaic inverter body produced and released the heat, the heat-conducting plate also can be with the heat transfer to the casing lateral wall that the photovoltaic inverter body produced when moving, the heat dissipation strip of casing lateral wall dispels the heat with the heat fast again, has improved the radiating efficiency to the photovoltaic radiator main part.

Optionally, a plurality of partition plates are arranged in the heat dissipation box, the partition plates are arranged in a cross mode to form a plurality of accommodating chambers, the accommodating chambers are not communicated, and phase change crystal blocks are installed in the accommodating chambers.

Through adopting above-mentioned technical scheme, the heat dissipation box is inside to be separated into a plurality of by a plurality of baffle and holds the cavity and every holds and all install in the cavity and be used for radiating phase transition crystal block, and when the phase transition crystal block in the heat dissipation box because of being heated the melting, a plurality of phase transition crystal block is blockked by the baffle and can not melt integrative to can also form a plurality of phase transition crystal block when the heat release crystallization of phase transition crystal block, make the top cap heat dissipation more even.

Optionally, the connection assembly includes: and the bearing frame is arranged on the hole wall of the mounting hole, and the heat dissipation box is arranged on the bearing frame.

Through adopting above-mentioned technical scheme, during the equipment heat dissipation box, with the heat dissipation shell joint in the position of accepting the frame, the mounting hole position of heat dissipation box joint at the top cap promptly realizes the top cap and the installation of being connected of heat dissipation box, the simple operation.

Optionally, the edge fixed mounting of heat dissipation box has the spiro union board, coupling assembling includes: the bolt is provided with a screwing hole, penetrates through the screwing plate and is in threaded connection with the bearing frame through the screwing hole.

Through adopting above-mentioned technical scheme, threaded connection is realized through the spiro union board at edge and top cap to the heat dissipation box improves the installation stability on the top cap.

Optionally, the mounting hole extends to the side wall of the top cover, and the heat dissipation box is provided with a dismounting block corresponding to one end of the mounting hole extending to the side wall of the top cover.

Through adopting above-mentioned technical scheme, when dismantling the mounting hole position of top cap with the heat dissipation box, the hand skids easily, can not grasp the heat dissipation box well and dismantle, and dismouting piece can be handed at this moment and the shell fin is dismantled from the top cap, the dismouting heat dissipation box of being convenient for.

Optionally, the connection assembly includes: slide rail and sliding block, slide rail fixed mounting is in the pore wall position of mounting hole, sliding block is provided with a pair ofly, two sliding block sets up respectively heat dissipation box's relative both sides, sliding block installs the sliding block the slide rail, the top cap is provided with and is used for with heat dissipation box is spacing be in the locating part of mounting hole position.

Through adopting above-mentioned technical scheme, when installing the heat dissipation box on the top cap, aim at the sliding rail on the top cap with the sliding block at heat dissipation box both ends earlier after, promote the heat dissipation box and make sliding block and sliding connection of sliding rail, will dispel the heat the box through the locating part after that and spacing on the top cap, realize the installation of being connected of heat dissipation box and top cap promptly.

Optionally, the shell is provided with a limiting groove; the locating part includes locating piece and gag lever post, the one end rotary type of locating piece install in the spacing inslot, the other end fixed connection of locating piece in the gag lever post, the one end butt of gag lever post in the heat dissipation box, the other end butt of gag lever post in the casing.

By adopting the technical scheme, the limiting rod is rotatably arranged on the top cover through the positioning block; install the heat dissipation box behind the mounting hole, rotate the gag lever post and make the relative both ends of gag lever post butt respectively on heat dissipation box and casing, realize promptly that the box is spacing the purpose on the top cap that dispels the heat to reduce to take place the heat dissipation box in transport or use, take place to rock for the condition of casing roll-off because of the casing, reduce the hindrance that causes staff's transport or use, strengthen the installation steadiness of heat dissipation box on the top cap.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the photovoltaic inverter body dissipates heat through the heat dissipation sheet and the heat dissipation box at the same time, the heat dissipation sheet directly transfers the heat in the shell to the heat dissipation box, and the heat dissipation box absorbs heat and is melted through the internal phase change crystal block, so that the heat dissipation effect is realized; the phase-change crystal blocks absorb heat for melting and release heat for crystallization, and can be recycled, so that the heat dissipation performance of the shell of the photovoltaic inverter is improved;

2. when the photovoltaic inverter body generates and releases heat, the heat conducting plate can also transmit the heat generated when the photovoltaic inverter body operates to the side wall of the shell, and the heat radiating fins on the side wall of the shell quickly radiate the heat, so that the radiating efficiency of the main body of the photovoltaic radiator is improved;

3. the locating part reduces and takes place the heat dissipation box in transport or use, because of the casing takes place to rock and for the condition of casing roll-off, reduces the hindrance that causes the transport or the use of staff, reinforcing the installation steadiness of heat dissipation box on the top cap.

Drawings

Fig. 1 is a schematic view of the overall structure of embodiment 1 of the present application.

Fig. 2 is a structural sectional view of embodiment 1 of the present application.

Fig. 3 is a schematic view of an installation structure of a top cover and a heat dissipation box in embodiment 1 of the present application.

Fig. 4 is a schematic view of an installation structure of the heat dissipation strip in embodiment 1 of the present application.

Fig. 5 is a partially enlarged view of a in fig. 2.

Fig. 6 is a schematic view of the overall structure of embodiment 2 of the present application.

Fig. 7 is a structural sectional view of embodiment 2 of the present application.

Description of reference numerals:

1. a photovoltaic inverter body; 11. a power module; 12. a transformer module; 2. a housing; 21. heat dissipation holes; 22. a limiting groove; 3. a heat sink; 31. mounting grooves; 4. a top cover; 41. mounting holes; 5. a heat dissipation box; 51. a partition plate; 52. a housing chamber; 53. phase-change crystal blocks; 54. disassembling and assembling the blocks; 55. a screw joint plate; 6. a connecting assembly; 61. a receiving frame; 611. screwing holes; 62. a bolt; 63. a slide rail; 64. a sliding connection block; 7. a heat conducting plate; 8. a heat dissipating strip; 9. a limiting member; 91. positioning blocks; 92. a limiting rod.

Detailed Description

The present application is described in further detail below with reference to figures 1-7.

Example 1

The embodiment of the application discloses heat abstractor of photovoltaic inverter. Referring to fig. 1 and 2, the heat dissipation device of the photovoltaic inverter includes a housing 2 and a heat dissipation fin 3, wherein a plurality of heat dissipation holes 21 are formed in a side wall of the housing 2, and the plurality of heat dissipation holes 21 are parallel to each other and are arranged at equal intervals; the shell 2 is hollow, the top of the shell is provided with a top cover 4, and a photovoltaic inverter body 1 is installed in the shell 2; the top cover 4 is provided with a mounting hole 41, the top cover 4 is provided with a heat dissipation box 5 at the position of the mounting hole 41, and the heat dissipation box 5 is detachably mounted on the top cover 4 through a connecting assembly 6.

Referring to fig. 2 and 3, a plurality of partition plates 51 are arranged in the heat dissipation box 5, the partition plates 51 are perpendicular to the heat dissipation box 5, the plurality of partition plates 51 are arranged in a mutually crossed manner to form a plurality of accommodating chambers 52, the plurality of accommodating chambers 52 are not communicated, and a phase change crystal block 53 is arranged in each accommodating chamber 52; the number of the radiating fins 3 is two, the two radiating fins 3 are respectively positioned at two opposite sides of the photovoltaic inverter body 1, the radiating fins 3 are arranged in the shell 2, and the tops of the radiating fins 3 are abutted against the radiating box 5; the case 2 absorbs heat by melting the phase change crystal block 53 in the heat radiation box 5, thereby improving the heat radiation performance of the case 2.

Referring to fig. 1 and 3, the mounting hole 41 extends to the side wall of the top cover 4, and the mounting and dismounting block 54 is mounted at one end of the heat dissipation box 5 corresponding to the mounting hole 41 extending to the side wall of the top cover 4, and the mounting and dismounting block 54 is convenient to hold so as to dismount the heat dissipation box 5 from the position of the mounting hole 41.

Referring to fig. 2 and 4, a mounting groove 31 is formed in one side of the heat sink 3 close to the housing 2, the photovoltaic inverter body 1 includes a power module 11 and a transformer module 12, and the power module 11 is fixedly mounted in the mounting groove 31; the transformer module 12 is abutted against one side of the radiating fin 3 away from the shell 2; a heat conducting plate 7 is mounted on one side, away from the top cover 4, of the photovoltaic inverter body 1, one side of the heat conducting plate 7 abuts against the photovoltaic inverter body 1, the other side of the heat conducting plate 7 abuts against the side wall of the shell 2, a plurality of heat dissipation strips 8 are embedded in the shell 2 corresponding to the side edge of the heat conducting plate 7, the plurality of heat dissipation strips 8 are divided into a plurality of groups, one end of each group of heat dissipation strips 8 is regularly arranged at equal intervals, and the other end of each group of heat dissipation strips 8 is scattered; two opposite sides of the heat conducting plate 7 in the vertical direction are respectively coated with insulating heat conducting glue (not shown in the figure); the heat that produces when insulating heat-conducting glue and heat-conducting plate 7 move photovoltaic inverter body 1 is transmitted to heat dissipation strip 8, and heat dissipation strip 8 transmits the heat outside casing 2 fast again to make things convenient for casing 2 to dispel the heat.

Referring to fig. 2 and 5, the connecting assembly 6 includes a receiving frame 61 and a bolt 62, the receiving frame 61 is mounted on the hole wall of the mounting hole 41, and the heat dissipation box 5 is mounted on the receiving frame 61; two spiro union boards 55 are fixedly mounted at the edge of heat dissipation box 5, two spiro union boards 55 are located the relative both sides of heat dissipation box 5 respectively, accept the position that frame 61 corresponds two spiro union boards 55 and seted up the spiro union hole 611, the spiro union hole 611 is provided with two rows, the spiro union hole 611 interval of same row sets up, bolt 62 is provided with a plurality of, bolt 62 wears to establish the spiro union hole 611 and through spiro union hole 611 threaded connection in accepting frame 61 to the installation stability of heat dissipation box 5 in mounting hole 41 has been improved.

The implementation principle of the heat dissipation device of the photovoltaic inverter in the embodiment of the application is as follows: when the heat dissipation box 5 is installed, the heat conduction plate 7 is installed at the bottom in the shell 2, the photovoltaic inverter body 1 is abutted to the heat conduction plate 7 for installation, the heat dissipation plate 3 is installed on one side, close to the top cover 4, of the photovoltaic inverter body 1, the top cover 4 is installed at the top of the shell 2, the heat dissipation box 5 is connected to the position of the installation hole 41 of the top cover 4 in a threaded mode through the bolt 62, and the top of the heat dissipation box 5 is abutted to the heat dissipation plate 3; the heat conducting plate 7 transfers the heat of the photovoltaic inverter body 1 to the side wall of the shell 2 where the heat radiating strips 8 are located, the heat radiating strips 8 radiate the heat to the outside of the shell 2, meanwhile, the heat radiating fins 3 also transfer the heat generated by the photovoltaic inverter body 1 to the heat radiating box 5, and the phase change crystal in the heat radiating box 5 absorbs heat and melts to achieve the heat radiating effect, so that the heat radiating performance of the shell 2 is improved.

Example 2

Referring to fig. 6 and 7, the present embodiment is different from embodiment 1 in that: the connecting assembly 6 comprises two sliding rails 63 and two sliding blocks 64, the two sliding rails 63 are respectively fixedly mounted at the hole wall position of the mounting hole 41, the two sliding blocks 64 are respectively arranged at two opposite sides of the heat dissipation box 5, the sliding blocks 64 are slidably mounted on the sliding rails 63, and the top cover 4 is provided with a limiting piece 9 for limiting the heat dissipation box 5 at the mounting hole 41.

Referring to fig. 6, the housing 2 is provided with a limiting groove 22, the limiting member 9 includes a positioning block 91 and a limiting rod 92, one end of the positioning block 91 is rotatably mounted in the limiting groove 22, the other end of the positioning block 91 is fixedly connected to the limiting rod 92, one end of the limiting rod 92 abuts against the heat dissipation box 5, and the other end of the limiting rod 92 abuts against the housing 2.

The implementation principle of the embodiment 2 is as follows: when the heat dissipation box 5 is installed, the sliding connection blocks 64 at the two ends of the heat dissipation box 5 are installed after sliding along the extending direction of the slide rail 63 from the positions of the slide rail 63, and then the limiting rod 92 is rotated, so that one end of the limiting rod 92 abuts against the side wall of the heat dissipation box 5, and the other end of the limiting rod 92 abuts against the shell 2, thereby quickly and conveniently realizing the assembly connection of the heat dissipation box 5 and the top cover 4.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The heat dissipation device of the photovoltaic inverter comprises a shell (2) and heat dissipation fins (3), and is characterized in that the shell (2) is hollow, a top cover (4) is arranged at the top of the shell, a photovoltaic inverter body (1) is installed in the shell (2), a mounting hole (41) is formed in the top cover (4), a heat dissipation box (5) is arranged at the position, located in the mounting hole (41), of the top cover (4), the heat dissipation box (5) is detachably installed on the top cover (4) through a connection assembly (6), and a plurality of phase change crystal blocks (53) are installed in the heat dissipation box (5); the radiating fins (3) are arranged in the shell (2), and the tops of the radiating fins (3) are abutted to the radiating box (5).

2. The heat sink for a photovoltaic inverter according to claim 1, wherein the heat sink (3) has a mounting groove (31) formed on a side thereof adjacent to the housing (2), and the photovoltaic inverter body (1) comprises: the transformer comprises a power module (11) and a transformer module (12), wherein the power module (11) is fixedly installed in the installation groove (31), and the transformer module (12) is abutted to one side, away from the shell (2), of the radiating fin (3).

3. The heat sink for the pv inverter according to claim 1, wherein a heat conducting plate (7) is installed on a side of the pv inverter body (1) away from the top cover (4), one side of the heat conducting plate (7) abuts against the pv inverter body (1), the other side of the heat conducting plate (7) abuts against a sidewall of the casing (2), and a plurality of heat dissipating strips (8) are embedded in the casing (2) corresponding to the sidewall of the heat conducting plate (7).

4. The heat sink for the photovoltaic inverter according to claim 1, wherein a plurality of partitions (51) are disposed in the heat sink box (5), the partitions (51) are disposed in a cross manner to form a plurality of accommodating chambers (52), the accommodating chambers (52) are not communicated, and phase change crystal blocks (53) are disposed in the accommodating chambers (52).

5. The heat sink for photovoltaic inverters according to claim 1, characterized in that the connection assembly (6) comprises: the bearing frame (61), the bearing frame (61) is installed on the hole wall of the installation hole (41), and the heat dissipation box (5) is installed on the bearing frame (61).

6. The heat sink for photovoltaic inverter according to claim 5, wherein a screw plate (55) is fixedly mounted to an edge of the heat dissipating box (5), and the connecting member (6) comprises: the bearing frame (61) is provided with a threaded hole (611), and the bolt (62) penetrates through the threaded plate (55) and is in threaded connection with the bearing frame (61) through the threaded hole (611).

7. The heat sink for photovoltaic inverter according to claim 1, wherein the mounting hole (41) extends to a side wall of the top cover (4), and the heat sink box (5) is mounted with a mounting block (54) corresponding to an end of the mounting hole (41) extending to the side wall of the top cover (4).

8. The heat sink for a photovoltaic inverter according to claim 7, wherein the connection assembly (6) comprises: slide rail (63) and sliding block (64), slide rail (63) fixed mounting in the pore wall position of mounting hole (41), sliding block (64) are provided with a pair ofly, two sliding block (64) set up respectively the relative both sides of heat dissipation box (5), sliding block (64) are installed slide rail (63), top cap (4) be provided with be used for with heat dissipation box (5) are spacing locating part (9) of mounting hole (41) position.

9. The heat sink for a photovoltaic inverter according to claim 8, wherein the housing (2) defines a limiting groove (22); locating part (9) are including locating piece (91) and gag lever post (92), the one end rotary type of locating piece (91) install in spacing groove (22), the other end fixed connection of locating piece (91) in gag lever post (92), the one end butt of gag lever post (92) in heat dissipation box (5), the other end butt of gag lever post (92) in casing (2).