CN114005649A - Large-current inductor for rapid multiphase voltage adjustment - Google Patents
Large-current inductor for rapid multiphase voltage adjustment Download PDFInfo
- Publication number
- CN114005649A CN114005649A CN202111225695.XA CN202111225695A CN114005649A CN 114005649 A CN114005649 A CN 114005649A CN 202111225695 A CN202111225695 A CN 202111225695A CN 114005649 A CN114005649 A CN 114005649A
- Authority
- CN
- China
- Prior art keywords
- magnetic core
- magnetic
- current inductor
- primary winding
- copper sheet
- 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.)
- Pending
Links
- 238000004804 winding Methods 0.000 claims abstract description 62
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229910052802 copper Inorganic materials 0.000 claims abstract description 28
- 239000010949 copper Substances 0.000 claims abstract description 28
- 238000003780 insertion Methods 0.000 claims description 14
- 230000037431 insertion Effects 0.000 claims description 14
- 239000011324 bead Substances 0.000 claims description 8
- 239000011521 glass Substances 0.000 claims description 8
- 239000003822 epoxy resin Substances 0.000 claims description 7
- 229920000647 polyepoxide Polymers 0.000 claims description 7
- 230000000903 blocking effect Effects 0.000 claims description 3
- 230000004044 response Effects 0.000 abstract description 5
- 230000001052 transient effect Effects 0.000 abstract description 5
- 239000003990 capacitor Substances 0.000 abstract description 3
- 230000006872 improvement Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
Images
Classifications
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- 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
- H01F27/24—Magnetic cores
-
- 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
- H01F27/24—Magnetic cores
- H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
- H01F27/263—Fastening parts of the core together
-
- 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
-
- 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
- H01F27/2847—Sheets; Strips
-
- 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
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/303—Clamping coils, windings or parts thereof together
-
- 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
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F37/00—Fixed inductances not covered by group H01F17/00
Abstract
The invention relates to the technical field of inductors and discloses a high-current inductor for quickly adjusting multiphase voltage, which comprises two magnetic cores I and II, a primary winding and a copper sheet winding, wherein the two magnetic cores I and II are connected with the primary winding through the copper sheet winding; the primary winding is arranged on one magnetic core I, and the copper sheet winding is arranged on the other magnetic core II; the primary winding and the copper sheet winding are both bonded with the second magnetic core; the magnetic shield is arranged outside the first magnetic core, the second magnetic core, the primary winding and the copper sheet winding, an opening is formed downwards in the magnetic shield, a plugging piece is arranged at the opening, and the plugging piece is connected with the bottom of the first magnetic core. The invention provides a high-current inductor for fast multiphase voltage adjustment, and the high-current inductor topology is used together with a multiphase buck converter, so that the minimum output capacitor is used for supporting very fast load transient response; solves the problems of magnetic leakage and electromagnetic interference improvement.
Description
Technical Field
The invention relates to the field of inductors, in particular to a high-current inductor for quickly adjusting multiphase voltage.
Background
Since the transient response in conventional circuits depends on the capacitance bank of the circuit output, the output filter inductance prevents rapid rise from the voltage regulator, and these polymer capacitors are often at risk of life degradation during use; however, based on the structure of the existing large-current inductor, after long-time use, the inductor is easy to age, the resistance is increased, the magnetic permeability is reduced, the eddy current loss is increased, and interference is easy to occur.
In order to solve the above problems, the present application provides a high current inductor for fast multiphase voltage adjustment.
Disclosure of Invention
Objects of the invention
In order to solve the technical problems in the background art, the invention provides a high-current inductor for fast multiphase voltage adjustment, and the high-current inductor topology is used together with a multiphase buck converter to support very fast load transient response by a minimum output capacitor; solves the problems of magnetic leakage and electromagnetic interference improvement.
(II) technical scheme
In order to solve the problems, the invention provides a high-current inductor for fast multi-phase voltage adjustment, which comprises a first magnetic core, a second magnetic core, a primary winding and a copper sheet winding, wherein the first magnetic core is provided with a first magnetic core and a second magnetic core;
the primary winding is arranged on one magnetic core I, and the copper sheet winding is arranged on the other magnetic core II;
the primary winding and the copper sheet winding are both bonded with the second magnetic core;
the magnetic shield is arranged outside the first magnetic core, the second magnetic core, the primary winding and the copper sheet winding, an opening is formed downwards in the magnetic shield, a plugging piece is arranged at the opening, and the plugging piece is connected with the bottom of the first magnetic core.
Preferably, the primary winding and the copper sheet winding are both bonded with the magnetic core two-way through epoxy resin.
Preferably, glass beads are arranged between the first magnetic core and the second magnetic core.
Preferably, the first magnetic core is an EEP magnetic core.
Preferably, the second magnetic core is an I-shaped magnetic core.
Preferably, the primary winding is a copper sheet primary winding.
Preferably, the two first magnetic cores are symmetrically arranged by taking the second magnetic core as an axis.
Preferably, the plugging piece comprises a bottom plate and an insertion rod, the bottom plate is fixedly installed at the bottom of a magnetic core I, one end of the insertion rod is fixedly connected with the bottom plate, and the other end of the insertion rod extends into the magnetic cover.
Preferably, a rubber layer is laid on the inserted bar and is tightly pressed with the magnetic cover.
Preferably, the four corners of the magnetic cover are provided with slots matched with the inserted rods.
The technical scheme of the invention has the following beneficial technical effects:
two EEP type magnetic cores I and I type magnetic cores two pass the glass bead size adjustment inductance structure of middle pad, and bind and assemble together with primary winding and copper sheet winding by the epoxy resin, two EEP type magnetic cores I and I type magnetic cores two pass the magnetic core of the glass bead size adjustment inductance structure of middle pad and form a closed magnetic field, the primary winding is regarded as one of them and regarded as the primary winding inductance, another copper sheet winding is regarded as the secondary winding inductance, in the use of the circuit actually, the secondary winding of a plurality of these units is connected in series and used together, the epoxy resin assembles the function that bonds all above-mentioned materials, the output capacitance in this kind of structural device can be removed in the circuit, and has improved the transient response of the fast load; the magnetic shield has the effects of solving magnetic leakage and improving electromagnetic interference.
Drawings
Fig. 1 is a schematic structural diagram of a large current inductor for fast multi-phase voltage adjustment according to the present invention.
Fig. 2 is a schematic diagram of a split structure of a large current inductor for fast multi-phase voltage adjustment according to the present invention.
Reference numerals: 1. a first magnetic core; 2. a second magnetic core; 3. a primary winding; 4. a copper sheet winding; 5. glass beads; 6. a magnetic shield; 7. a blocking member; 71. a base plate; 72. and (4) inserting the rod.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
As shown in fig. 1-2, the high-current inductor for fast multi-phase voltage regulation according to the present invention includes two magnetic cores 1, two magnetic cores 2, a primary winding 3 and a copper sheet winding 4;
the primary winding 3 is arranged on one magnetic core I1, and the copper sheet winding 4 is arranged on the other magnetic core II 2;
the primary winding 3 and the copper sheet winding 4 are both bonded with the second magnetic core 2;
the magnetic cover 6 is arranged outside the first magnetic core 1, the second magnetic core 2, the primary winding 3 and the copper sheet winding 4, an opening is formed downwards in the magnetic cover 6, a plugging piece 7 is arranged at the opening, and the plugging piece 7 is connected with the bottom of the first magnetic core 1.
In an alternative embodiment, the primary winding 3 and the copper sheet winding 4 are both bonded with the second magnetic core 2 through epoxy resin for assembly.
In an alternative embodiment, a glass bead 5 is provided between the two first and second magnetic cores 1 and 2.
In an alternative embodiment, core one 1 is an EEP core.
In an alternative embodiment, core two 2 is an I-core.
In an alternative embodiment, the primary winding 3 is a copper sheet primary winding.
In an alternative embodiment, the two first magnetic cores 1 are symmetrically arranged with the second magnetic core 2 as an axis.
In an alternative embodiment, the blocking member 7 includes a bottom plate 71 and an insertion rod 72, the bottom plate 71 is fixedly mounted at the bottom of one magnetic core 1, one end of the insertion rod 72 is fixedly connected with the bottom plate 71, and the other end of the insertion rod 72 extends into the interior of the magnetic cover 6, so that the insertion rod 72 plays a role of protecting the internal components when being matched with the magnetic cover 6.
In an alternative embodiment, a rubber layer is laid on the insertion rod 72, and the rubber layer is tightly pressed with the magnetic shield 6, thereby increasing the stability of the insertion rod 72 inside the magnetic shield 6.
In an alternative embodiment, four corners of the magnetic cover 6 are provided with slots adapted to the insertion rods 72.
In the invention, two EEP type magnetic cores I1 and I type magnetic cores II 2 adjust the inductance structure through the size of the middle pad glass bead 5, and are bonded and assembled with the primary winding 3 and the copper sheet winding 4 by epoxy resin, the two EEP type magnetic cores I1 and I type magnetic cores II 2 adjust the magnetic core of the inductance structure through the size of the middle pad glass bead 5 to form a closed magnetic field, the primary winding 3 is used as one of the primary winding 3 inductance, the other copper sheet winding 4 is used as the secondary winding inductance, in the actual use of the circuit, a plurality of secondary windings of the unit are connected in series for use, and the epoxy resin bonds all the materials, so that the structural device can remove the output capacitance in the circuit and improve the rapid load transient response; the magnetic shield 6 has the effects of solving magnetic leakage and improving electromagnetic interference.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (10)
1. A large-current inductor for fast multi-phase voltage adjustment is characterized by comprising two magnetic cores I (1), a magnetic core II (2), a primary winding (3) and a copper sheet winding (4);
the primary winding (3) is arranged on one magnetic core I (1), and the copper sheet winding (4) is arranged on the other magnetic core II (2);
the primary winding (3) and the copper sheet winding (4) are both bonded with the second magnetic core (2);
the magnetic core is characterized in that a magnetic cover (6) is arranged outside the first magnetic core (1), the second magnetic core (2), the primary winding (3) and the copper sheet winding (4), an opening is formed downwards in the magnetic cover (6), a plugging piece (7) is arranged at the opening, and the plugging piece (7) is connected with the bottom of the first magnetic core (1).
2. A high current inductor for fast multiphase voltage regulation according to claim 1, wherein the primary winding (3) and the copper sheet winding (4) are bonded to the second magnetic core (2) by epoxy resin.
3. A high current inductor for fast multiphase voltage regulation according to claim 1, wherein a glass bead (5) is disposed between the two first magnetic cores (1) and the second magnetic core (2).
4. A high current inductor for fast multiphase voltage regulation according to claim 1, wherein the first magnetic core (1) is an EEP magnetic core.
5. A high current inductor for fast multiphase voltage regulation according to claim 1, wherein the second magnetic core (2) is an I-shaped magnetic core.
6. A high current inductor for fast multiphase voltage regulation according to claim 1, wherein the primary winding (3) is a copper sheet primary winding.
7. A large current inductor for fast multiphase voltage regulation according to claim 1, wherein two first magnetic cores (1) are disposed symmetrically with respect to the second magnetic core (2).
8. A high current inductor for fast multiphase voltage regulation according to claim 1, wherein the blocking member (7) comprises a base plate (71) and an insertion rod (72), the base plate (71) is fixedly installed at the bottom of a magnetic core one (1), one end of the insertion rod (72) is fixedly connected with the base plate (71), and the other end of the insertion rod (72) extends into the magnetic cover (6).
9. The large-current inductor for rapid multiphase voltage regulation according to claim 8, wherein a rubber layer is laid on the plug rod (72), and the rubber layer is tightly pressed with the magnetic cover (6).
10. The large-current inductor for rapid multiphase voltage regulation according to claim 8, wherein slots adapted to the insertion rods (72) are formed at four corners of the magnetic cover (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111225695.XA CN114005649A (en) | 2021-10-21 | 2021-10-21 | Large-current inductor for rapid multiphase voltage adjustment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111225695.XA CN114005649A (en) | 2021-10-21 | 2021-10-21 | Large-current inductor for rapid multiphase voltage adjustment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114005649A true CN114005649A (en) | 2022-02-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111225695.XA Pending CN114005649A (en) | 2021-10-21 | 2021-10-21 | Large-current inductor for rapid multiphase voltage adjustment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114005649A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117038291A (en) * | 2023-06-07 | 2023-11-10 | 淮安顺络文盛电子有限公司 | Inductance element |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209388851U (en) * | 2019-01-16 | 2019-09-13 | 深圳顺络电子股份有限公司 | A kind of appearance is arranged without air cleft assembly type inductance |
| CN209418281U (en) * | 2019-01-07 | 2019-09-20 | 深圳市科达嘉电子有限公司 | A kind of shielded high-current inductance can be improved resistance to pressure |
| CN113223824A (en) * | 2021-04-29 | 2021-08-06 | 东莞沛波电子有限公司 | High-capacity power inductor convenient for automatic production |
-
2021
- 2021-10-21 CN CN202111225695.XA patent/CN114005649A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209418281U (en) * | 2019-01-07 | 2019-09-20 | 深圳市科达嘉电子有限公司 | A kind of shielded high-current inductance can be improved resistance to pressure |
| CN209388851U (en) * | 2019-01-16 | 2019-09-13 | 深圳顺络电子股份有限公司 | A kind of appearance is arranged without air cleft assembly type inductance |
| CN113223824A (en) * | 2021-04-29 | 2021-08-06 | 东莞沛波电子有限公司 | High-capacity power inductor convenient for automatic production |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117038291A (en) * | 2023-06-07 | 2023-11-10 | 淮安顺络文盛电子有限公司 | Inductance element |
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20220201 |