CN218679704U

CN218679704U - Heat dissipation device for power module in photovoltaic inverter

Info

Publication number: CN218679704U
Application number: CN202221987964.6U
Authority: CN
Inventors: 李建伟; 李亚飞
Original assignee: Tangshan Yongrun Technology Co ltd
Current assignee: Tangshan Yongrun Technology Co ltd
Priority date: 2022-07-29
Filing date: 2022-07-29
Publication date: 2023-03-21
Anticipated expiration: 2032-07-29

Abstract

The application discloses heat abstractor for power module among photovoltaic inverter, the intelligent cabinet temperature adjusting device comprises a cabinet body, the rectangular hole is seted up to cabinet body back side wall, its internally mounted has the IGBT module, the copper sheet sets up at IGBT module back side wall, the heating panel sets up at copper sheet back side wall, a plurality of heat radiation fins evenly set up at heating panel back side wall, the cooling tube sets up inside heat radiation fins, a plurality of heat radiation fins's cooling tube passes through the connecting pipe and connects gradually, produce the heat at photovoltaic inverter during operation, the heat is at first absorbed by the copper sheet, later absorbed and give off by the heating panel, a plurality of heat radiation fins's setting has increased the heat radiating area of heating panel, cooling water is through getting into the cooling tube simultaneously, discharge after the absorbed heat, the radiating cooperation water-cooling cools off, and the radiating efficiency is increased, the normal operating of IGBT module has been ensured.

Description

Heat dissipation device for power module in photovoltaic inverter

Technical Field

The disclosure relates to the technical field of photovoltaic power generation, in particular to a heat dissipation device for a power module in a photovoltaic inverter.

Background

With the increasing shortage of non-renewable resources and the increasing awareness of environmental protection of the whole people, the grid-connected power generation technology and application of renewable resources such as solar energy and the like are concerned more and more by all circles of society.

The reliability of the group string type photovoltaic grid-connected inverter is used as a core device of a solar power generation system, the reliability determines the safe operation of the photovoltaic system, one of important factors restricting the safe operation is the heat dissipation problem of an IGBT power module in the inverter, the IGBT is a power semiconductor composite element integrating high frequency, high voltage and large current, the occurrence of the IGBT promotes the great development of power electronics, but the IGBT power module generates larger heat in the working process, so that the temperature of the IGBT power module is rapidly increased, and the overhigh temperature has great harm to the performance of the IGBT power module and even seriously influences the service life of the IGBT power module.

How to avoid the great damage of the performance of the IGBT power module caused by the overhigh temperature and even seriously affect the service life of the IGBT power module is a technical problem which is urgently needed to be solved at present. To this end, we propose a heat sink for a power module in a photovoltaic inverter.

Disclosure of Invention

In view of the above-mentioned drawbacks and deficiencies in the prior art, it is desirable to provide a heat dissipation apparatus for a power module in a photovoltaic inverter.

In a first aspect, the present application provides a heat dissipation device for a power module in a photovoltaic inverter, comprising:

the cooling device comprises a cabinet body, a rectangular hole is formed in the rear side wall of the cabinet body, an IGBT module is installed on the inner wall of the rear side of the cabinet body through bolts, a copper sheet is arranged on the rear side wall of the IGBT module and is located in the rectangular hole, a heat dissipation plate is arranged on the rear side wall of the copper sheet, a first heat dissipation fin, a second heat dissipation fin and a plurality of third heat dissipation fins are arranged on the rear side wall of the heat dissipation plate, the first heat dissipation fin and the second heat dissipation fin are respectively located at two ends of the rear side wall of the heat dissipation plate, the plurality of third heat dissipation fins are evenly arranged and arranged between the first heat dissipation fin and the second heat dissipation fin, cooling pipes are arranged inside the first heat dissipation fin, the second heat dissipation fin and the plurality of third heat dissipation fins, each cooling pipe is provided with an input end and an output end, a water inlet pipe is arranged at the cooling pipe input end of the first heat dissipation fin and the cooling pipe output end of the third heat dissipation fin adjacent to the first heat dissipation fin are connected through a connecting pipe, the cooling pipe input end of the second heat dissipation fin and the cooling pipe output end of the third heat dissipation fin adjacent to the second heat dissipation fin are connected through a connecting pipe, and the cooling pipe output end of the connecting pipe are connected to the connecting pipe.

According to the technical scheme provided by the embodiment of the application, the cabinet body rear side wall is provided with the heat dissipation box, and the first heat dissipation fins, the second heat dissipation fins and the plurality of third heat dissipation fins are all located inside the heat dissipation box.

According to the technical scheme provided by the embodiment of the application, the cooling pipe is of an S-shaped structure.

According to the technical scheme that this application embodiment provided, the heat dissipation box is kept away from be provided with the extraction fan on the inner wall of the cabinet body.

According to the technical scheme that this application embodiment provided, cabinet body top and a lateral wall are open structure, the opening part can be dismantled and be provided with L type apron.

In summary, the present technical solution specifically discloses a heat dissipation device for a power module in a photovoltaic inverter, which includes a cabinet body, a rectangular hole is formed on a rear side wall of the cabinet body, and an IGBT module is installed in the cabinet body, a copper sheet is disposed on the rear side wall of the IGBT module, a heat dissipation plate is disposed on the rear side wall of the copper sheet, a first heat dissipation fin, a second heat dissipation fin and a plurality of third heat dissipation fins are disposed on the rear side wall of the heat dissipation plate, cooling pipes are disposed in the first heat dissipation fin, the second heat dissipation fin and the plurality of third heat dissipation fins, the cooling pipes have an input end and an output end, a water inlet pipe is disposed at the input end of the cooling pipe of the first heat dissipation fin, a water outlet pipe is disposed at the output end of the cooling pipe of the second heat dissipation fin, the output end of the cooling pipe of the first radiating fin is connected with the input end of the cooling pipe of the adjacent third radiating fin through the connecting pipe, the input end of the cooling pipe of the second radiating fin is connected with the output end of the cooling pipe of the adjacent third radiating fin through the connecting pipe, the third radiating fins are sequentially connected through the connecting pipe, when the photovoltaic inverter works, heat is firstly absorbed by the copper sheet and then dissipated by the radiating plate, the radiating area of the radiating plate is increased by the first radiating fin, the second radiating fin and the third radiating fins, radiating efficiency is improved, meanwhile, cooling water enters the cooling pipe through the water inlet pipe, the cooling water is discharged through the water outlet pipe after absorbing the heat, radiating efficiency is further improved, and normal operation of the IGBT module is guaranteed.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings:

fig. 1 is a schematic structural diagram of a heat dissipation device for a power module in a photovoltaic inverter.

Fig. 2 is a rear view of the cabinet.

Fig. 3 is a top view of the heat dissipation case.

Fig. 4 is a schematic structural view of the first heat dissipating fins, the second heat dissipating fins and a plurality of third heat dissipating fins.

Fig. 5 is a schematic structural diagram of an IGBT module.

Fig. 6 is a schematic view of a cooling tube structure.

Reference numbers in the figures: 1. a cabinet body; 2. an IGBT module; 3. an L-shaped cover plate; 4. a water outlet pipe; 5. a heat dissipation box; 6. a rectangular hole; 7. a water inlet pipe; 8. a dust screen; 9. a heat dissipation plate; 10. a first heat radiation fin; 11. a copper sheet; 12. an exhaust fan; 13. a connecting pipe; 14. a cooling tube; 15. a second heat radiation fin; 16. and (7) installing the block.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Example one

Please refer to the schematic structural diagram of the heat dissipation device for the power module in the photovoltaic inverter shown in fig. 1, which includes a cabinet 1, wherein the top and a side wall of the cabinet 1 are both in an open structure, an L-shaped cover plate 3 is disposed on the opening, the L-shaped cover plate 3 is connected to the cabinet 1 through a bolt, the L-shaped cover plate 3 is conveniently detached by using the bolt, and the operation is conveniently performed inside the cabinet 1.

As shown in fig. 1 to 6, a mounting block 16 is disposed on the top of an IGBT module 2, a first mounting hole is formed in the mounting block 16, a second mounting hole is formed in the inner wall of the rear side of a cabinet 1, a bolt penetrates through the first mounting hole and the second mounting hole to mount the IGBT module 2 on the inner wall of the rear side of the cabinet 1, a rectangular hole 6 is formed in the middle of the rear side wall of the cabinet 1, a copper sheet 11 is disposed on the rear side wall of the IGBT module 2, the copper sheet 11 is located inside the rectangular hole 6, the copper sheet 11 is structurally matched with the rectangular hole 6, the copper sheet 11 has excellent heat conductivity, a heat sink 9 is disposed on the rear side wall of the copper sheet 11, a plurality of heat dissipation fins 10 are disposed on the rear side wall of the heat sink 9 and extend to the outside of the cabinet 1, the first heat dissipation fin 10, the second heat dissipation fin 15 and a plurality of third heat dissipation fins are disposed on the rear side wall of the heat sink 9, wherein the first heat dissipation fin 10 and the second heat dissipation fin 15 are disposed at both ends of the rear side wall of the heat dissipation fin 9, the plurality of the third heat dissipation fins 10 and the heat dissipation fins 14 are connected to an input end of a cooling fin 14, and an input end of a cooling fin 14 connected to an adjacent cooling pipe 14 disposed in the cooling fin 14.

The heat dissipation box 5 is composed of a mounting frame and a dustproof net 8, the heat dissipation box 5 is arranged on the rear side wall of the cabinet body 1, the first heat dissipation fins 10, the second heat dissipation fins 15 and the plurality of third heat dissipation fins are all located inside the heat dissipation box 5, the two exhaust fans 12 are all arranged on the inner wall, far away from the cabinet body 1, of the heat dissipation box 5, and the dustproof net 8 can prevent dust from entering the inside of the heat dissipation box 5, so that the dust is prevented from being accumulated on the first heat dissipation fins 10, the second heat dissipation fins 15 and the plurality of third heat dissipation fins after the device is used for a long time, and the heat dissipation effects of the first heat dissipation fins 10, the second heat dissipation fins 15 and the plurality of third heat dissipation fins are affected; the heat dissipation plate 9, the first heat dissipation fins 10, the second heat dissipation fins 15, and the third heat dissipation fins in the heat dissipation box 5 can be extracted by the extraction fan 12 through the dust screen 8 of the heat dissipation box 5.

The water inlet pipe 7 is arranged at the input end of the first radiating fin 10, one end of the water inlet pipe 7, which is far away from the first radiating fin 10, upwards penetrates through the radiating box 5 and extends to the outside of the radiating box 5, the water outlet pipe 4 is arranged at the output end of the second radiating fin 15, and one end of the water outlet pipe 4, which is far away from the second radiating fin 15, downwards penetrates through the radiating box 5 and extends to the outside of the radiating box 5.

When the photovoltaic inverter works, a large amount of heat is generated by the IGBT module 2, the heat is accumulated on the surface of the IGBT module 2, the copper sheets 11 can firstly absorb the heat accumulated on the surface of the IGBT module 2 in a large area, the heat dissipation plate 9 can dissipate the heat absorbed by the copper sheets 11, the heat dissipation area of the heat dissipation plate 9 is increased by the first heat dissipation fins 10, the second heat dissipation fins 15 and the third heat dissipation fins, the heat dissipation effect and the heat dissipation capacity are improved, the dissipated heat can be dissipated through the dustproof net 8, the water inlet pipe 7 sends cooling water into the cooling pipe 14 in the first heat dissipation fins 10 through the external cooling water pipe, the stroke of the cooling water is increased by the S-shaped structure of the cooling pipe 14, the cooling effect is enlarged, the heat on the heat dissipation fins 10 is taken away by the cooling water in the cooling pipe 14 and is finally discharged from the water outlet pipe 4, the heat dissipated can be drawn by the working of the pumping fan 12, and the heat dissipation is matched with water cooling and the heat dissipation, so that the heat dissipation efficiency is improved, and the normal operation of the IGBT module 2 is guaranteed.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims

1. A heat dissipation device for a power module in a photovoltaic inverter, comprising:

the solar water heater comprises a cabinet body (1), rectangular hole (6) have been seted up on the cabinet body (1) rear side wall, install IGBT module (2) through the bolt on the cabinet body (1) rear side inner wall, be provided with copper sheet (11) on IGBT module (2) rear side wall, copper sheet (11) are located in rectangular hole (6), copper sheet (11) rear side wall is provided with heating panel (9), heating panel (9) rear side wall is provided with first heat radiation fin (10), second heat radiation fin (15) and a plurality of third heat radiation fin, first heat radiation fin (10) with second heat radiation fin (15) are located respectively heating panel (9) rear side wall both ends, and are a plurality of third heat radiation fin align to grid sets up first heat radiation fin (10) with between second heat radiation fin (15), first heat radiation fin (10), second heat radiation fin (15) and a plurality of all be provided with cooling tube (14) inside the third heat radiation fin (9), cooling tube (14) have input and output, cooling tube (7) of first heat radiation fin (10) are provided with cooling tube (14) and cooling tube input end (13) and cooling fin (14) adjacent cooling tube (14) and cooling tube input end (14) and cooling fin (13) are connected The output ends of the cooling pipes (14) of the adjacent third radiating fins are connected through the connecting pipe (13), the output ends of the cooling pipes (14) of the second radiating fins (15) are provided with water outlet pipes (4), and the cooling pipes (14) of the third radiating fins are sequentially connected through the connecting pipe (13).

2. The heat dissipation device for the power module in the photovoltaic inverter according to claim 1, wherein the cabinet body (1) is provided with a heat dissipation box (5) at a rear side wall, and the first heat dissipation fin (10), the second heat dissipation fin (15) and the third heat dissipation fins are all located inside the heat dissipation box (5).

3. The heat sink for power modules in photovoltaic inverters, as set forth in claim 1, characterized in that the cooling tube (14) is of "S" type structure.

4. The heat dissipation device for a power module in a photovoltaic inverter according to claim 2, characterized in that an inner wall of the heat dissipation box (5) away from the cabinet body (1) is provided with an extraction fan (12).

5. The heat dissipation device for the power module in the photovoltaic inverter as recited in claim 1, wherein the top and a side wall of the cabinet body (1) are of an open structure, and an L-shaped cover plate (3) is detachably disposed at the opening.