CN107276428B - Low-voltage high-current switching power supply structure - Google Patents
Low-voltage high-current switching power supply structure Download PDFInfo
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- CN107276428B CN107276428B CN201710690934.6A CN201710690934A CN107276428B CN 107276428 B CN107276428 B CN 107276428B CN 201710690934 A CN201710690934 A CN 201710690934A CN 107276428 B CN107276428 B CN 107276428B
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- transformer
- radiating plate
- power supply
- metal
- metal heat
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- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2823—Wires
- H01F27/2828—Construction of conductive connections, of leads
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Dc-Dc Converters (AREA)
- Rectifiers (AREA)
Abstract
The invention discloses a low-voltage high-current switching power supply structure, which comprises a transformer, wherein two sides of the transformer are connected with a first metal heat dissipation plate and a second metal heat dissipation plate, and an insulating layer is arranged between the transformer and the first metal heat dissipation plate and between the transformer and the second metal heat dissipation plate; the outer side of the first metal heat radiation plate is provided with an output rectifying device which is separated from the transformer by a certain distance; the outer side of the second metal heat radiation plate is provided with an input rectifying device and an inverter device in an insulating way, and the input rectifying device and the inverter device are separated from the transformer by a certain distance; the secondary side of the transformer is electrically connected with an output rectifying device, and the output rectifying device is electrically connected with the outside of the power supply through a first metal heat radiation plate; the center tap of the secondary side of the transformer is connected with the second metal heat radiation plate, the primary side of the transformer is electrically connected with the inverter device, and the input rectifying device is electrically connected with the outside of the power supply. The transformer is arranged between the two metal radiating plates, and heat generated by the transformer is radiated through the metal radiating plates, so that the transformer has a good radiating effect and is convenient to maintain.
Description
[ field of technology ]
The invention relates to an electronic component, in particular to a low-voltage high-current switching power supply structure.
[ background Art ]
The national intellectual property office is in 2013, 1 month and 2 days, disclose a high-power synchronous rectification high-frequency switch power supply assembly structure ", patent number is 201220248264.5, the characteristic of this patent is that it has circuit board integration and modularization, low-loss, each part works independently, has reduced the interference of electromagnetic field to circuit and device, but in the above-mentioned patent, the voltage transformer is connected with circuit board directly, both are in the high-temperature working environment all the time, the load is great, easy to burn out the circuit board; meanwhile, the circuit board is arranged between the conductive double-hole busbar, so that the circuit board is inconvenient to detach and is inconvenient to maintain because the transformer is required to be detached after being cooled.
The invention is researched and proposed to overcome the defects of the prior art.
[ invention ]
The invention aims to solve the technical problem of providing a low-voltage high-current switch power supply structure with good heat dissipation effect and convenient disassembly.
In order to solve the technical problems, the invention provides the following technical scheme: the low-voltage high-current switching power supply structure is characterized by comprising a transformer, wherein two sides of the transformer are connected with a first metal heat dissipation plate and a second metal heat dissipation plate in a heat conduction manner, and an insulating layer is arranged between the transformer and the first metal heat dissipation plate and between the transformer and the second metal heat dissipation plate; an output rectifying device is arranged on the outer side of the first metal radiating plate, and the output rectifying device is separated from the transformer by a certain distance; an input rectifying device and an inverter device are arranged on the outer side of the second metal radiating plate in an insulating manner, and the input rectifying device and the inverter device are separated from the transformer by a certain distance; the secondary side of the transformer is electrically connected with the output rectifying device, and the output rectifying device is electrically connected with the outside of the power supply through a first metal heat radiation plate; the secondary side center tap of the transformer is connected with the second metal heat radiation plate, the primary side of the transformer is electrically connected with the inversion device, and the input rectifying device is electrically connected with the outside of the power supply.
The transformer is characterized by comprising a left base body and a right base body, wherein the left base body is divided into a left central column and a left outer ring body, a left groove is formed between the left central column and the left outer ring body, and the left central column is connected with the left outer ring body at the bottom; the right seat body is divided into a right central column and a right outer ring body, a right groove is formed between the right central column and the right outer ring body, and the right central column is connected with the right outer ring body at the bottom; the left groove and the right groove are arranged oppositely, and an iron core and a coil are placed in the left groove and the right groove; the output rectifying devices are two groups, the left outer ring body and the right central column are connected with the secondary side center tap, and the second metal heat radiation plate is electrically connected with the secondary side center tap to serve as an output electrode; the left center column is connected with one group of output rectifying devices through a first conductive block to serve as one secondary side output end of the transformer, and the right outer ring body is connected with the other group of output rectifying devices through a second conductive block to serve as the other secondary side output end of the transformer.
The low-voltage high-current switching power supply structure is characterized in that the first conductive block is connected with one group of output rectifying devices through a detachable first conductive sheet, and the second conductive block is connected with the other group of output rectifying devices through a detachable second conductive sheet.
The low-voltage high-current switching power supply structure is characterized in that a plurality of transformers are arranged.
A low voltage high current switching power supply structure as described above wherein the length of the first conductive block is less than the length of the second conductive block.
The low-voltage high-current switch power supply structure is characterized in that the first metal radiating plate and the second metal radiating plate are water-cooling radiating plates with water flow pipelines in the plate bodies.
The low-voltage high-current switch power supply structure is characterized by comprising a case composed of an upper cover and a base, wherein the transformer, the first metal heat dissipation plate and the second metal heat dissipation plate are arranged in the case.
The low-voltage high-current switching power supply structure is characterized in that insulation pieces are arranged among the first metal heat dissipation plate, the second metal heat dissipation plate and the base.
The low-voltage high-current switching power supply structure is characterized in that the first metal radiating plate is connected with a first output terminal, and the second metal radiating plate is connected with a second output terminal.
Compared with the prior art, the low-voltage high-current switching power supply structure has the following advantages:
compared with the prior device, the transformer is not required to be disassembled after being completely cooled during maintenance, time is saved, heat generated by the transformer is dissipated through the first metal radiating plate and the second metal radiating plate, the heat generated by the transformer cannot influence the output rectifying device and the input rectifying device, the heat dissipation effect is good, the replacement is convenient, and the maintenance is convenient.
[ description of the drawings ]
The invention is described in further detail below with reference to the attached drawing figures, wherein:
fig. 1 is a perspective view of the present invention.
Fig. 2 is an exploded view of the present invention.
Fig. 3 is an internal top view of the present invention.
Fig. 4 is a schematic diagram of a transformer connected to a metal heat sink.
Fig. 5 is a schematic diagram of the connection between the transformer and the metal heat dissipation plate according to the present invention.
Fig. 6 is a structural diagram of a transformer of the present invention.
Fig. 7 is a schematic circuit diagram of the present invention.
Description of the drawings: 1. a chassis; 11. an upper cover; 12. a base; 3. a transformer; 31. a left seat body; 311. a left outer ring body; 312. a left center post; 313. a left groove; 32. a right seat body; 321. a right outer ring; 322. a right center column; 323. a right groove; 33. a secondary side center tap; 4. inputting a rectifying device; 6. an inverter device; 7. a first metal heat dissipation plate; 71. an output rectifying device; 72. a first output terminal; 8. a second metal heat dissipation plate; 81. a second output terminal; 91. a first conductive block; 911. a first conductive sheet; 92. a second conductive block; 921. a second conductive sheet, 10, and an insulating layer; 13. an insulating member.
[ detailed description ] of the invention
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1 to 7, a low-voltage high-current switching power supply structure, which is high in current and generates a large amount of heat, comprises a transformer 3, wherein two sides of the transformer 3 are connected with a first metal heat dissipation plate 7 and a second metal heat dissipation plate 8 in a heat conduction manner, and an insulating layer 10 is arranged between the transformer 3 and the first metal heat dissipation plate 7 and between the transformer 3 and the second metal heat dissipation plate 8; the insulation and non-conduction between the transformer and the first and second metal heat dissipation plates are ensured, an output rectifying device 71 is arranged on the outer side of the first metal heat dissipation plate 7, the output rectifying device is convenient to detach during maintenance, the transformer is not required to be detached after being completely cooled, the output rectifying device 71 is separated from the transformer 3 by a certain distance, the heat generated by the transformer does not influence the output rectifying device 71, and the heat dissipation effect is good; the external side of the second metal heat radiation plate 8 is provided with an input rectifying device 4 and an inverter device 6 in an insulating way, the inverter device 6 can change high voltage into low voltage, small current becomes large current, and a large amount of heat is generated and can be radiated through the second metal heat radiation plate; the input rectifying device is convenient to detach during maintenance, and the transformer does not need to be detached after being completely cooled; the input rectifying device 4 and the inverter device 6 are separated from the transformer 3 by a certain distance; the heat generated by the transformer does not affect the input rectifying device 4 and the inverter device 6, the secondary side of the transformer 3 is electrically connected with the output rectifying device 71, and the output rectifying device 71 is electrically connected with the outside of the power supply through the first metal heat dissipation plate 7; the secondary side center tap 33 of the transformer 3 is connected to the second metal heat sink 8, the primary side of the transformer 3 is electrically connected to the inverter device 6 (see fig. 7), and the input rectifying device 4 is electrically connected to the outside of the power supply. In this embodiment, the second metal heat dissipation plate may cool the input rectifying device, the inverter device, and the transformer, and serve as an electrode for connection and output; the first metal heat dissipation plate can cool the output rectifying device and the transformer and serve as rectified electrode output.
As shown in fig. 1 to 7, the transformer 3 includes a left base 31 and a right base 32, the left base 31 is divided into a left central column 312 and a left outer ring 311, a left groove 313 is formed between the left central column 312 and the left outer ring 311, and the left central column 312 is connected to the left outer ring 311 at the bottom; the right seat 32 is divided into a right central column 322 and a right outer ring 321, a right groove 323 is formed between the right central column 322 and the right outer ring 321, and the right central column 322 is connected with the right outer ring 321 at the bottom; the left groove 313 is disposed opposite to the right groove 323, and houses the iron core and the coil therein; the output rectifying devices 71 are two groups, the left outer ring body 311 and the right central column 322 are connected with the secondary side center tap 33, and the second metal heat dissipation plate 8 is electrically connected with the secondary side center tap 33 to serve as an output electrode; the left center post 312 is connected with a first conductive block 91 between one group of output rectifying devices 71 to serve as one secondary side output end of the transformer 3, and the right outer ring 321 is connected with a second conductive block 92 between the other group of output rectifying devices 71 to serve as the other secondary side output end of the transformer 3.
As shown in fig. 1 to 7, in the present embodiment, the first conductive block 91 is connected to one set of output rectifying devices 71 through a detachable first conductive sheet 911, and the second conductive block 92 is connected to the other set of output rectifying devices 71 through a detachable second conductive sheet 921. The transformer is guaranteed to be electrically connected with the output rectifying device, when the output rectifying device is in a problem and needs to be replaced and maintained, the output rectifying device can be maintained and replaced only by disassembling the first conducting strip and the second conducting strip, and the maintenance is convenient.
As shown in fig. 1 to 7, in the present embodiment, the number of the transformers 3 is plural, may be two, three or more, and is set according to the requirement, and the number is not particularly limited herein; the transformers may be arranged in parallel or in series, and the arrangement mode is not particularly limited herein.
As shown in fig. 1 to 7, in the present embodiment, the length of the first conductive block 91 is smaller than the length of the second conductive block 92. Therefore, the first conductive sheet and the second conductive sheet can be arranged inside and outside, and the disassembly is convenient.
As shown in fig. 1 to 7, in the present embodiment, the first metal heat dissipation plate 7 and the second metal heat dissipation plate 8 are water-cooled heat dissipation plates with water flow pipes in the plate body. The heat that the transformer work produced is transmitted for first metal heating panel and second metal heating panel, and the heat that the output rectifier device produced is transmitted for first metal sheet and is dispelled the heat, and the cold water constantly cools down the heat dissipation to first metal heating panel and second metal heating panel, takes away the heat that the transformer produced through heat exchange, and whole power supply unit's cooling radiating effect is good.
As shown in fig. 1 to 7, in the present embodiment, the low-voltage high-current switching power supply structure includes a chassis 1 composed of an upper cover 11 and a base 12, and the transformer 3, the first metal heat dissipation plate 7 and the second metal heat dissipation plate 8 are disposed in the chassis 1.
As shown in fig. 1 to 7, in the present embodiment, an insulating member 13 is provided between the first metal heat dissipation plate 7, the second metal heat dissipation plate 8, and the base 12. The insulation of the contact surfaces of the first metal heat radiating plate and the second metal heat radiating plate with the base is ensured.
As shown in fig. 1 to 7, in the present embodiment, the first output terminal 72 is connected to the first metal heat sink 7, and the second output terminal 81 is connected to the second metal heat sink 8. In the use process, the first output terminal can be used as a positive electrode of a power supply, and the second output terminal can be used as a negative electrode of the power supply; the first output terminal may also serve as a negative power supply electrode, and the second output terminal may also serve as a positive power supply electrode, as the case may be, without being specifically limited thereto.
In order to ensure reliable connection, the first metal heat dissipation plate is connected with the transformer in an insulating way through screws, and the screws penetrate through the first metal heat dissipation plate; the second metal heat dissipation plate is in insulating connection with the transformer through screws, and the screws penetrate through the second metal heat dissipation plate. The transformer, the first metal heat dissipation plate and the second metal heat dissipation plate are respectively provided with corresponding fixed connection holes, an insulating sleeve is arranged in each fixed connection hole, the insulating sleeve is made of ceramic materials, and screws are arranged in the insulating sleeve so as to fix the first metal heat dissipation plate and the second metal heat dissipation plate on two sides of the transformer.
Claims (3)
1. The low-voltage high-current switching power supply structure is characterized by comprising a transformer (3), wherein two sides of the transformer (3) are connected with a first metal radiating plate (7) and a second metal radiating plate (8) in a heat conduction mode, and an insulating layer (10) is arranged between the transformer (3) and the first metal radiating plate (7) and between the transformer and the second metal radiating plate (8); an output rectifying device (71) is arranged on the outer side of the first metal radiating plate (7), and the output rectifying device (71) is separated from the transformer (3) by a certain distance; an input rectifying device (4) and an inverter device (6) are arranged on the outer side of the second metal radiating plate (8) in an insulating mode, and the input rectifying device (4) and the inverter device (6) are separated from the transformer (3) by a certain distance; the secondary side of the transformer (3) is electrically connected with the output rectifying device (71), and the output rectifying device (71) is electrically connected with the outside of the power supply through a first metal radiating plate (7); the secondary side center tap (33) of the transformer (3) is connected with the second metal radiating plate (8), the primary side of the transformer (3) is electrically connected with the inverter device (6), and the input rectifying device (4) is electrically connected with the outside of the power supply;
the first metal radiating plate (7) and the second metal radiating plate (8) are water-cooling radiating plates with water flow pipelines in the plate bodies;
the low-voltage high-current switching power supply structure comprises a case (1) formed by an upper cover (11) and a base (12), wherein a transformer (3), a first metal radiating plate (7) and a second metal radiating plate (8) are arranged in the case (1), and an insulating piece (13) is arranged between the first metal radiating plate (7), the second metal radiating plate (8) and the base (12);
the transformer (3) comprises a left base body (31) and a right base body (32), the left base body (31) is divided into a left central column (312) and a left outer ring body (311), a left groove (313) is formed between the left central column (312) and the left outer ring body (311), and the left central column (312) is connected with the left outer ring body (311) at the bottom; the right seat body (32) is divided into a right central column (322) and a right outer ring body (321), a right groove (323) is formed between the right central column (322) and the right outer ring body (321), and the right central column (322) is connected with the right outer ring body (321) at the bottom; the left groove (313) is opposite to the right groove (323) and is provided with an iron core and a coil; the output rectifying devices (71) are two groups, the left outer ring body (311) and the right central column (322) are connected with the secondary side central tap (33), and the second metal heat radiation plate (8) is electrically connected with the secondary side central tap (33) to serve as an output electrode; a first conductive block (91) is connected between the left central column (312) and one group of output rectifying devices (71) to serve as one secondary side output end of the transformer (3), and a second conductive block (92) is connected between the right outer ring body (321) and the other group of output rectifying devices (71) to serve as the other secondary side output end of the transformer (3);
the first conductive block (91) is connected with one group of output rectifying devices (71) through a detachable first conductive sheet (911), and the second conductive block (92) is connected with the other group of output rectifying devices (71) through a detachable second conductive sheet (921);
the length of the first conductive block (91) is smaller than the length of the second conductive block (92).
2. A low voltage high current switching power supply structure according to claim 1, wherein said transformers (3) are plural.
3. A low voltage high current switching power supply structure according to claim 1, wherein said first metal heat sink (7) is connected to a first output terminal (72), and said second metal heat sink (8) is connected to a second output terminal (81).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710690934.6A CN107276428B (en) | 2017-08-14 | 2017-08-14 | Low-voltage high-current switching power supply structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710690934.6A CN107276428B (en) | 2017-08-14 | 2017-08-14 | Low-voltage high-current switching power supply structure |
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| Publication Number | Publication Date |
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| CN107276428A CN107276428A (en) | 2017-10-20 |
| CN107276428B true CN107276428B (en) | 2023-09-12 |
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| CN201710690934.6A Active CN107276428B (en) | 2017-08-14 | 2017-08-14 | Low-voltage high-current switching power supply structure |
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| CN112820515B (en) * | 2021-01-08 | 2022-03-11 | 合肥三宇电器有限责任公司 | Power supply device for low-voltage large current |
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| CN104658742A (en) * | 2015-03-12 | 2015-05-27 | 中山市华星电源科技有限公司 | Transformer rectification structure |
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| CN206135733U (en) * | 2016-11-10 | 2017-04-26 | 四川英杰电气股份有限公司 | High frequency direct current module power |
| CN206225160U (en) * | 2016-11-24 | 2017-06-06 | 江苏东方四通科技股份有限公司 | A kind of low-voltage, high-current synchronous rectification transformer |
| CN206402122U (en) * | 2017-01-23 | 2017-08-11 | 四川英杰电气股份有限公司 | A kind of air-cooled high frequency electric source |
| CN207039468U (en) * | 2017-08-14 | 2018-02-23 | 中山市华星电源科技有限公司 | A kind of low-voltage, high-current switching power unit |
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2017
- 2017-08-14 CN CN201710690934.6A patent/CN107276428B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104658742A (en) * | 2015-03-12 | 2015-05-27 | 中山市华星电源科技有限公司 | Transformer rectification structure |
| CN205693572U (en) * | 2016-05-31 | 2016-11-16 | 四川英杰电气股份有限公司 | A kind of power module of integrated transformer Parallel opertation |
| CN206135733U (en) * | 2016-11-10 | 2017-04-26 | 四川英杰电气股份有限公司 | High frequency direct current module power |
| CN206225160U (en) * | 2016-11-24 | 2017-06-06 | 江苏东方四通科技股份有限公司 | A kind of low-voltage, high-current synchronous rectification transformer |
| CN206402122U (en) * | 2017-01-23 | 2017-08-11 | 四川英杰电气股份有限公司 | A kind of air-cooled high frequency electric source |
| CN207039468U (en) * | 2017-08-14 | 2018-02-23 | 中山市华星电源科技有限公司 | A kind of low-voltage, high-current switching power unit |
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