CN220085809U - Flyback DCDC converter - Google Patents
Flyback DCDC converter Download PDFInfo
- Publication number
- CN220085809U CN220085809U CN202320693099.2U CN202320693099U CN220085809U CN 220085809 U CN220085809 U CN 220085809U CN 202320693099 U CN202320693099 U CN 202320693099U CN 220085809 U CN220085809 U CN 220085809U
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- CN
- China
- Prior art keywords
- air gap
- magnetic ring
- dcdc converter
- terminal
- magnetic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- HEZMWWAKWCSUCB-PHDIDXHHSA-N (3R,4R)-3,4-dihydroxycyclohexa-1,5-diene-1-carboxylic acid Chemical compound O[C@@H]1C=CC(C(O)=O)=C[C@H]1O HEZMWWAKWCSUCB-PHDIDXHHSA-N 0.000 title claims abstract description 20
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052802 copper Inorganic materials 0.000 claims abstract description 14
- 239000010949 copper Substances 0.000 claims abstract description 14
- 239000003292 glue Substances 0.000 claims abstract description 9
- 239000004809 Teflon Substances 0.000 claims description 9
- 229920006362 Teflon® Polymers 0.000 claims description 9
- 239000010410 layer Substances 0.000 claims description 3
- 239000002344 surface layer Substances 0.000 claims description 3
- 238000004804 winding Methods 0.000 abstract description 8
- 238000009413 insulation Methods 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229920000784 Nomex Polymers 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004763 nomex Substances 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Coils Or Transformers For Communication (AREA)
Abstract
The utility model relates to the technical field of transformers of vehicle-mounted DCDC converters, and discloses a flyback DCDC converter which comprises a copper shell, a magnetic ring with an air gap and terminals, wherein the magnetic ring with the air gap is arranged in the copper shell, an insulating wire is wound on the outer side of the magnetic ring with the air gap, the terminals are welded on the outer side of the insulating wire, glue is filled in a gap between the inner part of the copper shell and the magnetic ring with the air gap, the glue plays a role in heat conduction and insulation, and a magnetic ring with the air gap is formed by using a plurality of magnetic blocks of the flyback DCDC converter; the air gap is directly ensured by the framework, and the framework also plays a role in fixing, supporting, isolating and insulating the winding and the magnetic core.
Description
Technical Field
The utility model relates to the technical field of transformers of vehicle-mounted DCDC converters, in particular to a flyback DCDC converter.
Background
In many topologies, flyback transformers tend to achieve low power output, and require an air gap treatment of the core in order to avoid saturation. And when the air gap of the magnetic core is too large, the segmentation mode is considered to be complex, and a mode of adding gaskets to a plurality of magnetic columns is generally adopted, and in addition, adhesive tapes or Nomex paper are needed to be additionally arranged for isolating and insulating the windings. Not only has higher price but also has unsatisfactory effect, and therefore, a novel magnetic element device is provided.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the utility model provides a flyback DCDC converter, which solves the problems.
(II) technical scheme
In order to achieve the above purpose, the present utility model provides the following technical solutions: the flyback DCDC converter comprises a copper shell, a magnetic ring with an air gap and terminals, wherein the magnetic ring with the air gap is arranged in the copper shell, an insulating wire is wound on the outer side of the magnetic ring with the air gap, the terminals are welded on the outer pins of the insulating wire, glue is filled in gaps between the inner part of the copper shell and the magnetic ring with the air gap, and the glue plays roles in heat conduction and insulation.
Preferably, the magnetic ring with the air gap comprises a framework and a plurality of groups of magnetic cores, and the plurality of groups of magnetic cores are arranged on the outer side of the framework.
Preferably, the framework is provided with a clamping groove, the outgoing leg of the insulated wire is arranged in the clamping groove, and the terminal is arranged in the clamping groove.
Preferably, the surface layer of the insulated wire is provided with an insulating layer, and the wire core is formed by twisting a plurality of strands of enameled wires.
Preferably, the terminal ends are provided with bushings.
Preferably, the sleeve comprises a heat-shrinkable sleeve and a teflon sleeve, the heat-shrinkable sleeve is connected with the terminal, the teflon sleeve is connected with the terminal, the heat-shrinkable sleeve isolates the welding position of the terminal and the primary winding, and the teflon sleeve strengthens insulation of the primary winding.
(III) beneficial effects
Compared with the prior art, the utility model provides a flyback DCDC converter, which has the following beneficial effects:
1. the flyback DCDC converter uses a plurality of magnetic blocks to form a magnetic ring with an air gap; the air gap is directly ensured by the framework, and the framework also plays a role in fixing, supporting, isolating and insulating the winding and the magnetic core.
2. The flyback DCDC converter adopts a flexible combination mode, can meet the requirements of different powers by adjusting the sizes and the quantity of magnetic blocks, is beneficial to design standardization and product automation, and effectively reduces the cost.
3. The flyback DCDC converter has the advantages that the primary side and the secondary side are in a pot shape and are tightly contacted, leakage inductance is small, energy transmission of the primary side and the secondary side is ensured, and generation of some peak voltage is reduced
Drawings
Fig. 1 is a schematic perspective view of the structure of the present utility model.
In the figure: 1. a copper shell; 2. a magnetic core; 3. a skeleton; 4. an insulating wire; 5. a terminal; 6. a heat-shrinkable sleeve; 7. a teflon sleeve; 8. glue.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1, a flyback DCDC converter includes a copper shell 1, a magnetic ring with an air gap, and a terminal 5, wherein the magnetic ring with an air gap is disposed inside the copper shell 1, an insulation wire 4 is wound on the outer side of the magnetic ring with an air gap, the terminal 5 is welded on the outgoing pin of the insulation wire 4, glue 8 is filled in a gap between the inner part of the copper shell 1 and the magnetic ring with an air gap, and the glue 8 plays roles in heat conduction and insulation.
Further, the magnetic ring with the air gap comprises a framework 3 and a plurality of groups of magnetic cores 2, and the plurality of groups of magnetic cores 2 are arranged on the outer side of the framework 3.
Further, a clamping groove is formed in the framework 3, the outgoing pins of the insulated wires 4 are arranged in the clamping groove, and the terminals 5 are arranged in the clamping groove.
Further, the surface layer of the insulated wire 4 is provided with an insulating layer, and the wire core is formed by twisting a plurality of strands of enameled wires.
Further, the terminal 5 is provided with a sleeve at its end.
Further, the sleeve comprises a heat-shrinkable sleeve 6 and a teflon sleeve 7, the heat-shrinkable sleeve 6 is connected with the terminal 5, the teflon sleeve 7 is connected with the terminal 5, the heat-shrinkable sleeve 6 isolates the welding position of the terminal 5 and the primary winding, and the teflon sleeve 7 strengthens insulation of the primary winding.
Working principle: when current flows through the primary side in the working process, no current flows through the secondary side winding to offset the ampere turns of the primary side, so that the magnetic core is easy to saturate, the switching tube is damaged due to immediate saturation even if the output power is low, an air gap is usually needed to be formed on the magnetic core 2 to prevent saturation, meanwhile, leakage inductance is reduced as much as possible, the energy transmission of the primary side and the secondary side is ensured, and the generation of peak voltage is reduced. The magnetic ring 2 with the air gap is formed by splicing the magnetic blocks and the framework, compared with the conventional segmented air gap mode of the magnetic core at present, the utility model reduces the labor and material cost, and is beneficial to the automation and standardization of products.
The assembly principle is as follows: the insulated wire 4 is uniformly wound on the magnetic ring with the air gap formed by assembling the magnetic core 2 and the framework 3, the pin of the insulated wire 2 and the terminal 5 are assembled into the clamping groove of the framework 3 after being welded, and the pin and the terminal are put into the copper shell 1 together, and then glue 8 is poured.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The flyback DCDC converter is characterized by comprising a copper shell (1), a magnetic ring with an air gap and a terminal (5), wherein the magnetic ring with the air gap is arranged in the copper shell (1), an insulating wire (4) is wound on the outer side of the magnetic ring with the air gap, the terminal (5) is welded on the outgoing pin of the insulating wire (4), and glue (8) is filled in a gap between the inner part of the copper shell (1) and the magnetic ring with the air gap.
2. A flyback DCDC converter according to claim 1, characterized in that: the magnetic ring with the air gap comprises a framework (3) and a plurality of groups of magnetic cores (2), and the magnetic cores (2) are arranged on the outer side of the framework (3).
3. A flyback DCDC converter according to claim 2, characterized in that: the framework (3) is provided with a clamping groove, the outlet of the insulated wire (4) is arranged in the clamping groove, and the terminal (5) is arranged in the clamping groove.
4. A flyback DCDC converter according to claim 1, characterized in that: the surface layer of the insulated wire (4) is provided with an insulating layer, and the wire core is formed by stranding a plurality of enameled wires.
5. A flyback DCDC converter according to claim 1, characterized in that: the tail end of the terminal (5) is provided with a sleeve.
6. The flyback DCDC converter of claim 5, wherein: the sleeve comprises a heat-shrinkable sleeve (6) and a teflon sleeve (7), wherein the heat-shrinkable sleeve (6) is connected with the terminal (5), and the teflon sleeve (7) is connected with the terminal (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320693099.2U CN220085809U (en) | 2023-04-02 | 2023-04-02 | Flyback DCDC converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320693099.2U CN220085809U (en) | 2023-04-02 | 2023-04-02 | Flyback DCDC converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220085809U true CN220085809U (en) | 2023-11-24 |
Family
ID=88825030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320693099.2U Active CN220085809U (en) | 2023-04-02 | 2023-04-02 | Flyback DCDC converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220085809U (en) |
-
2023
- 2023-04-02 CN CN202320693099.2U patent/CN220085809U/en active Active
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