CN107769525B - Power unit self-circulation air-cooled auxiliary heat dissipation structure and power unit driving device - Google Patents
Power unit self-circulation air-cooled auxiliary heat dissipation structure and power unit driving device Download PDFInfo
- Publication number
- CN107769525B CN107769525B CN201711208754.6A CN201711208754A CN107769525B CN 107769525 B CN107769525 B CN 107769525B CN 201711208754 A CN201711208754 A CN 201711208754A CN 107769525 B CN107769525 B CN 107769525B
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- Prior art keywords
- power unit
- air
- plate
- cover plate
- outer cover
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- 230000017525 heat dissipation Effects 0.000 title claims abstract description 32
- 229910052751 metal Inorganic materials 0.000 claims abstract description 36
- 239000002184 metal Substances 0.000 claims abstract description 36
- 238000001816 cooling Methods 0.000 claims abstract description 30
- 238000005192 partition Methods 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000007664 blowing Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- 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
- H02M1/00—Details of apparatus for conversion
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a self-circulation air-cooling auxiliary heat dissipation structure of a power unit and a power unit driving device, wherein the heat dissipation structure comprises a metal outer cover plate, a plurality of air duct clapboards which are mutually parallel are arranged on the inner side of the metal outer cover plate, and each air duct clapboards and the inner side of the metal outer cover plate form an independent flat air duct; an air suction port is reserved at one end of each air duct partition plate, a centrifugal fan is arranged below the air suction port, and an air outlet is formed in the other end of each air duct partition plate. The structure of the invention can reduce the working environment temperature of the drive control board and improve the working reliability thereof. Besides heat dissipation, the air duct metal outer cover plate is used as a rear cover plate of the power unit, and can also play a role in protecting the power unit.
Description
Technical Field
The invention belongs to the technical field of converters, and relates to a power unit, in particular to a self-circulation air-cooling auxiliary heat dissipation structure of the power unit and a power unit driving device.
Background
The power unit is one of very important key components in the converter, and is generally composed of a radiator (air cooling, water cooling or heat pipe), an IGBT device, a composite busbar, a drive control board, a configuration protection board, a frame, a support insulating piece and the like, and the power unit is matched with the control unit to complete the converter energy conversion function. The heat generated during the operation of the IGBT device is dissipated by the various heat sinks, the heat generated by the driving control board is generally ignored, and no specially designed heat dissipation measures are provided, but when a plurality of functions of one power unit are integrated and a plurality of driving control boards are used, the heat dissipated during the operation of the control board is not ignored, otherwise, the local environment temperature of the control board is excessively high, so that the reliability of the operation of the control board is reduced.
In the prior art, one of the technical schemes is as follows: the power unit adopts open design, and outer protection frame is fretwork, is not seal structure, and internally mounted's drive control panel all relies on natural heat dissipation. If the number of the driving control boards in the power unit is small, the power unit is suitable for use when the heat dissipation capacity is not very large; however, when the integrated functions of a power unit are many and the number of used driving control boards is many, the heat emitted by the driving control boards during working is large, and the natural heat dissipation can not meet the use requirement.
In the prior art, the other technical scheme is as follows: in the airtight space, an axial flow fan is used for directly blowing the control panel to dissipate heat. The heat is gathered in the closed space, so that effective dissipation can not be obtained, and the heat dissipation effect is poor; and the axial flow fan is adopted, so that the required air duct space is larger.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a self-circulation air-cooling auxiliary heat dissipation structure of a power unit and a power unit driving device.
The aim of the invention is realized by the following technical scheme:
The self-circulation air-cooling auxiliary heat dissipation structure of the power unit comprises a metal outer cover plate, wherein a plurality of air duct clapboards which are mutually parallel are arranged on the inner side of the metal outer cover plate, and each air duct clapboards and the inner side of the metal outer cover plate form an independent flat air duct; an air suction port is reserved at one end of each air duct partition plate, a centrifugal fan is arranged below the air suction port, and an air outlet is formed in the other end of each air duct partition plate.
Further, a fan power socket is provided at one end of the inner side of the metal outer cover plate, and the power supply of each centrifugal fan is connected to the fan power socket.
Further, two air duct baffles are arranged on the inner side of the metal outer cover plate.
Further, the fan power socket is arranged on the inner side surface of the air duct metal outer cover plate between the two compact centrifugal fans, and provides 24V direct current power for the centrifugal fans to work.
Further, the air suction port is a circular air suction port.
Further, the centrifugal fan is fixed on the inner side surface of the metal outer cover plate at one end of the flat air duct through a fan mounting plate; the air inlet of the centrifugal fan is aligned with the air suction inlet, and the air blowing opening of the centrifugal fan faces into the flat air duct.
Further, the thickness of the centrifugal fan is smaller than that of the flat air duct, the centrifugal fan is integrally arranged in the end part of the flat air duct, and the air inlet and outlet direction of the centrifugal fan is changed by 90 degrees.
The invention also provides a power unit driving device based on the power unit self-circulation air-cooled auxiliary heat dissipation structure: the device comprises an upper insulating plate, a driving plate, an insulating plate, a T-shaped water cooling plate, a bottom plate and a left side plate; the driving control board is arranged on the radiating surface of the T-shaped water cooling board through an insulating board as an isolating layer, and then a working space of the driving control board is defined by the converging side of the T-shaped water cooling board, the bottom board, the upper insulating board and the left side board; the self-circulation air-cooled auxiliary heat dissipation structure of the power unit is used as a rear cover plate structure of the power unit driving device, namely, the metal outer cover plate is used as a rear cover plate of a working space of the driving control plate and is fixedly connected with one side edges of the upper insulating plate, the T-shaped water cooling plate, the bottom plate and the left side plate.
Further, twelve driving control boards are arranged; the insulating board is provided with six.
The invention has the following beneficial effects:
1) The self-circulation air-cooling auxiliary heat dissipation function of the power unit driving control panel is realized by using the compact centrifugal fan to skillfully design the flat long air duct, and the self-circulation air-cooling auxiliary heat dissipation device has a simple and practical structure, reduces the volume of the whole power unit and lightens the weight.
2) The air duct metal outer cover plate forming the air duct component not only plays a role in heat dissipation and cooling, but also serves as a rear cover plate of the power unit, and plays a role in protecting a driving control board in the power unit; after the back cover plate is opened, the air duct assembly is detached together, the driving control plate is directly exposed outside, the driving control plate is convenient to maintain and replace, and maintainability is high.
Drawings
FIG. 1 is a schematic diagram of a power unit drive control board installation and working space;
FIG. 2 is a schematic diagram of a heat dissipation air duct assembly and air flow;
FIG. 3 is an exploded view of the heat dissipation air duct assembly;
FIG. 4 is a compact centrifugal fan;
Fig. 5 is an assembled schematic view of the present invention.
Wherein: 1 is an upper insulating plate; 2 is a drive control board; 3 is an insulating plate; 4 is a T-shaped water cooling plate; 5 is a bottom plate; 6 is a left side plate; 7 is a metal outer cover plate; 8 is a compact centrifugal fan; 9 is a fan mounting plate; 10 is a fan power socket; 11 is an air duct baffle; 12 is an air suction port; 13 is an air outlet.
Detailed Description
The invention is described in further detail below with reference to the attached drawing figures:
See fig. 2 and 3: the invention relates to a self-circulation air-cooling auxiliary heat dissipation structure of a power unit, which comprises a metal outer cover plate 7, wherein a plurality of air duct clapboards 11 which are mutually parallel are arranged on the inner side of the metal outer cover plate 7, and each air duct clapboards 11 and the inner side of the metal outer cover plate 7 form an independent flat air duct; an air suction port 12 is reserved at one end of each air channel baffle 11, a centrifugal fan 8 is arranged below the air suction port 12, and an air outlet 13 is arranged at the other end of each air channel baffle 11. A fan power socket 10 is also provided at one end inside the metal outer cover plate 7, and the power supply of each centrifugal fan 8 is connected to the fan power socket 10.
In the preferred embodiment of the invention, two air duct baffles are provided inside the metal outer cover. The metal outer cover plate 7 and the two air duct clapboards 11 are riveted together to form two independent flat long air ducts; the metal outer cover plate 7 is made of a metal aluminum plate, has enough length and flat thickness, and has good heat dissipation and cooling effects on hot air in the air duct. The fan power socket 10 is arranged on the inner side surface of the air duct metal outer cover plate 7 between the two compact centrifugal fans 2, and provides 24V direct current power for the centrifugal fans to work. The air intake 12 is a circular air intake. The centrifugal fan 8 is fixed on the inner side surface of the metal outer cover plate 7 at one end of the flat air duct through a fan mounting plate 9; the air inlet of the centrifugal fan 8 is aligned with the air suction inlet 12, and the air blowing inlet of the centrifugal fan 8 faces into the flat air duct.
Specifically, the centrifugal fan 8 of the present invention is a compact centrifugal fan (2), and its specific mounting structure is: the compact centrifugal fan is mounted on a fan mounting plate 9 (2 pieces) and then mounted inside a flat long air duct corresponding to the suction opening through two square holes in the metal outer cover plate 7. As shown in fig. 4, the centrifugal fan 8 has a thickness smaller than that of the flat duct, and it can be seen that it is relatively thin and compact. The centrifugal fan 8 is integrally provided in the end portion of the flat air duct, and the centrifugal fan 8 changes the direction of the incoming and outgoing air by 90 degrees.
The invention also provides a power unit driving device based on the self-circulation air-cooling auxiliary heat dissipation structure of the power unit: the device comprises an upper insulating plate 1, a driving plate 2, an insulating plate 3, a T-shaped water cooling plate 4, a bottom plate 5 and a left side plate 6; the driving control board 2 is arranged on the radiating surface of the T-shaped water cooling plate 4 through the insulating plate 3 as an isolating layer, and then the converging side of the T-shaped water cooling plate 4, the bottom plate 5, the upper insulating plate 1 and the left side plate 6 form a driving control board working space; the power unit self-circulation air-cooled auxiliary heat dissipation structure is used as a rear cover plate structure of the power unit driving device, namely, a metal outer cover plate 7 is used as a rear cover plate of a working space of a driving control plate and is fixedly connected with one side edges of the upper insulating plate 1, the T-shaped water cooling plate 4, the bottom plate 5 and the left side plate 6, so that the driving control plate is protected. When the heat dissipation air duct assembly is mounted above the power unit driving control board, a relatively airtight space is formed, as shown in fig. 5. In the preferred embodiment of the present invention, the drive control board 2 is provided with twelve blocks; the insulating plate 3 is provided with six blocks.
The working process of the invention is as follows:
When the power unit works, heat emitted by the drive control board is sucked into the two flat long air channels of the heat dissipation air channel assembly along with hot air by the two compact centrifugal fans, when the hot air passes through the flat long air channels, the hot air is subjected to good heat dissipation and cooling by the air channel metal outer cover plate by means of sufficient length and flat thickness, cooled air enters the working area of the drive control board through the air outlets of the two flat long air channels, and after the cooled air is heated by the heat emitted by the drive control board, the cooled air is sucked into the air channels again, so that the self-circulation air cooling auxiliary heat dissipation structure of the drive control board is realized.
The structural design of the invention can reduce the working environment temperature of the drive control board and improve the working reliability of the drive control board. Besides heat dissipation, the air duct metal outer cover plate is used as a rear cover plate of the power unit, and can also play a role in protecting the power unit.
Claims (5)
1. The power unit driving device of the self-circulation air-cooling auxiliary heat dissipation structure of the power unit is characterized by comprising an upper insulating plate (1), a driving control plate (2), an insulating plate (3), a T-shaped water cooling plate (4), a bottom plate (5) and a left side plate (6); the driving control board (2) is arranged on the radiating surface of the T-shaped water cooling board (4) through the insulating board (3) as an isolating layer, and then the working space of the driving control board is enclosed by the converging side of the T-shaped water cooling board (4), the bottom board (5), the upper insulating board (1) and the left side board (6); the self-circulation air-cooling auxiliary heat dissipation structure of the power unit is used as a rear cover plate structure of the power unit driving device, namely, a metal outer cover plate (7) is used as a rear cover plate of a driving control plate working space and is fixedly connected with one side edges of the upper insulating plate (1), the T-shaped water cooling plate (4), the bottom plate (5) and the left side plate (6);
The self-circulation air-cooling auxiliary heat dissipation structure of the power unit comprises a metal outer cover plate (7), wherein a plurality of air duct clapboards (11) which are mutually parallel are arranged on the inner side of the metal outer cover plate (7), and each air duct clapboard (11) and the inner side of the metal outer cover plate (7) form an independent flat air duct; an air suction port (12) is reserved at one end of each air channel baffle (11), a centrifugal fan (8) is arranged below the air suction port (12), an air outlet (13) is arranged at the other end of each air channel baffle (11), and the air suction port (12) is a circular air suction port;
The centrifugal fan (8) is fixed on the inner side surface of the metal outer cover plate (7) at one end of the flat air duct through a fan mounting plate (9); the air inlet of the centrifugal fan (8) is aligned with the air suction inlet (12), and the air blowing opening of the centrifugal fan (8) faces into the flat air duct; the thickness of centrifugal fan (8) is less than the thickness of flat wind channel, and centrifugal fan (8) wholly set up in flat wind channel tip, and centrifugal fan (8) will pass in and out the wind direction and change 90 degrees.
2. A power unit driving device according to claim 1, characterized in that a fan power socket (10) is further provided at the inner end of the metal outer cover plate (7), the power supply of each centrifugal fan (8) being connected to the fan power socket (10).
3. The power unit driving device according to claim 2, wherein two air duct partitions are provided inside the metal outer cover plate.
4. A power unit driving device according to claim 3, characterized in that the fan power socket (10) is mounted on the inner side of the duct metal outer cover plate (7) between two compact centrifugal fans 2 to provide 24V dc power for the centrifugal fan operation.
5. The power unit driving device according to claim 1, characterized in that the driving control board (2) is provided with twelve blocks; the insulating plate (3) is provided with six blocks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711208754.6A CN107769525B (en) | 2017-11-28 | 2017-11-28 | Power unit self-circulation air-cooled auxiliary heat dissipation structure and power unit driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711208754.6A CN107769525B (en) | 2017-11-28 | 2017-11-28 | Power unit self-circulation air-cooled auxiliary heat dissipation structure and power unit driving device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107769525A CN107769525A (en) | 2018-03-06 |
| CN107769525B true CN107769525B (en) | 2024-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711208754.6A Active CN107769525B (en) | 2017-11-28 | 2017-11-28 | Power unit self-circulation air-cooled auxiliary heat dissipation structure and power unit driving device |
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| CN (1) | CN107769525B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108256277A (en) * | 2018-03-13 | 2018-07-06 | 南京双启新能源科技有限公司 | A kind of Digital Simulation switch power amplifier |
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| Publication number | Publication date |
|---|---|
| CN107769525A (en) | 2018-03-06 |
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