CN110148512B - Three-magnetic-core decoupling magnetic integrated transformer - Google Patents
Three-magnetic-core decoupling magnetic integrated transformer Download PDFInfo
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- CN110148512B CN110148512B CN201910434211.9A CN201910434211A CN110148512B CN 110148512 B CN110148512 B CN 110148512B CN 201910434211 A CN201910434211 A CN 201910434211A CN 110148512 B CN110148512 B CN 110148512B
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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
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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
- H01F27/28—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
- H01F27/306—Fastening or mounting coils or windings on core, casing or other support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F30/00—Fixed transformers not covered by group H01F19/00
- H01F30/04—Fixed transformers not covered by group H01F19/00 having two or more secondary windings, each supplying a separate load, e.g. for radio set power supplies
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F30/00—Fixed transformers not covered by group H01F19/00
- H01F30/06—Fixed transformers not covered by group H01F19/00 characterised by the structure
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- Engineering & Computer Science (AREA)
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- Coils Or Transformers For Communication (AREA)
Abstract
The invention discloses a three-magnetic-core decoupling magnetic integrated transformer which comprises four groups of windings, a middle cross-shaped magnetic core, a first U-shaped magnetic core and a second U-shaped magnetic core, wherein the first U-shaped magnetic core and the second U-shaped magnetic core are respectively positioned at two sides of the middle cross-shaped magnetic core and are opposite in installation direction and form an angle of 90 degrees with each other, the first U-shaped magnetic core and the second U-shaped magnetic core are respectively in the same direction with two wings of the middle cross-shaped magnetic core, the first U-shaped magnetic core and one wing of the middle cross-shaped magnetic core form one transformer, and the second U-shaped magnetic core and the other wing of the middle cross-shaped magnetic core form the other transformer. The invention can reduce the volume of the original double transformers by integration and can realize the decoupling when the two transformers work simultaneously. If only one transformer is expected to operate, the other transformer does not need to be disconnected, and when the two transformers are required to operate simultaneously, the two transformers can operate independently without affecting each other due to the decoupling of the windings.
Description
Technical Field
The invention relates to the technical field of transformers, in particular to a three-magnetic-core decoupling magnetic integrated transformer.
Background
At present, the integration of two transformers usually adopts a form of a multi-winding transformer, the coupling problem between windings exists, after an alternating current signal is applied to one winding, a corresponding alternating current signal is inevitably induced to other windings, if only one transformer is expected to work, the operation can be realized only by a mode of disconnecting the load of the other transformer, and if two transformers are required to work simultaneously, because of the coupling characteristic of the windings, the two transformers are inevitably influenced mutually.
Disclosure of Invention
The invention aims to make up the defects of the prior art and provides a three-magnetic-core decoupling magnetic integrated transformer.
The invention is realized by the following technical scheme:
the utility model provides a three magnetic core decoupling zero magnetism integrated transformer, is including four groups of windings, middle cross magnetic core, U type magnetic core one and U type magnetic core two be located the both sides of middle cross magnetic core respectively and the installation direction is relative, each other becomes 90 degrees, U type magnetic core one and U type magnetic core two respectively with the equidirectional of two wings of middle cross magnetic core, a transformer is constituteed with a wing of middle cross magnetic core to U type magnetic core one, another transformer is constituteed with another wing of middle cross magnetic core to U type magnetic core two.
And the windings on the first U-shaped magnetic core and the second U-shaped magnetic core are respectively distributed in two modes, namely two-side distribution and middle distribution.
The windings on the two wings of the middle cross-shaped magnetic core are distributed in a two-side mode.
The size of the original double transformers can be reduced through integration, and decoupling of the two transformers in the process of working simultaneously can be achieved. If only one transformer is expected to operate, the other transformer does not need to be disconnected, and when the two transformers are required to operate simultaneously, the two transformers can operate independently without affecting each other due to the decoupling of the windings.
The invention has the advantages that: 1. compared with two independent transformers, the structure of the invention reduces four magnetic cores into three magnetic cores through magnetic integration, thereby effectively reducing the volume of the transformer;
2. the two integrated transformers have a decoupling characteristic, the operation of one transformer cannot influence the other transformer, and the two transformers can simultaneously and independently operate.
Drawings
Fig. 1 is a front exploded view of the magnetic integrated structure of the present invention.
FIG. 2 is a top view of a magnetic integrated structure of the present invention.
Fig. 3 is a left side exploded view of the magnetic integrated structure of the present invention.
Fig. 4 is a diagram of an actual circuit of the transformer of the present invention.
Fig. 5 shows two winding distributions on one U-shaped core (fig. 5a shows a bilateral distribution, and fig. 5b shows a middle distribution).
Fig. 6 shows the distribution of the windings on one wing of the center cross core.
Fig. 7 shows the distribution of the windings on the other limb of the central cross-shaped core.
Fig. 8 shows two winding distribution patterns on the second U-shaped magnetic core (fig. 8a shows a two-sided distribution, and fig. 8b shows a middle distribution).
Detailed Description
As shown in fig. 1, 2 and 3, a three-core decoupling magnetic integrated transformer includes four groups of windings, a middle cross-shaped magnetic core, a first U-shaped magnetic core and a second U-shaped magnetic core, wherein the first U-shaped magnetic core 2 and the second U-shaped magnetic core 3 are respectively located at two sides of the middle cross-shaped magnetic core 1 and are opposite in installation direction, and form 90 degrees with each other, the first U-shaped magnetic core 2 and the second U-shaped magnetic core 3 are respectively in the same direction with two wings of the middle cross-shaped magnetic core 1, the first U-shaped magnetic core 2 and one wing a of the middle cross-shaped magnetic core form a transformer, and the second U-shaped magnetic core 3 and the other wing b of the middle cross-shaped magnetic core form another transformer. The middle cross-shaped magnetic core 1, the two sides U-shaped magnetic cores I2 and the two U-shaped magnetic cores II 3 can be fixed by winding adhesive tapes on the outer parts, and can also be unfixed, so that the magnetic coupling mechanism is used in a wireless charging occasion as a non-contact magnetic coupling mechanism.
And the windings on the U-shaped magnetic core I2 and the U-shaped magnetic core II 3 are respectively distributed in two ways, namely distributed at two sides and distributed in the middle.
The windings on the two wings of the middle cross-shaped magnetic core 1 are distributed in a two-side distribution mode.
As shown in fig. 1, the core 1 is a center cross core having two wings a and b, and a one-side U-core and one wing a of the center cross core 1 form a transformer T1. As shown in FIG. 2, the U-shaped cores on both sides are installed in opposite directions, at 90 degrees to each other, and are in the same direction as the two wings of the middle cross-shaped core. As shown in FIG. 3, the magnetic integrated structure has a symmetrical longitudinal structure, and the other U-shaped magnetic core II and the other wing b of the middle cross-shaped magnetic core 1 form another transformer T2. As shown in fig. 4, which shows an actual circuit of the magnetically integrated transformer, the magnetically integrated transformer includes cores M1, M2, M3, M4, which may correspond to the three cores of the present invention in eight ways, as shown in table 1:
| magnetic core M1 | Magnetic core M2 | Magnetic core M3 | Magnetic core M4 | |
| First corresponding mode | |
Wing a of |
|
Wing b of |
| Second corresponding mode | |
Wing a of |
Wing b of |
|
| Third corresponding mode | Wing a of |
|
|
Wing b of |
| Fourth corresponding mode | Wing a of |
|
Wing b of |
|
| Fifth corresponding mode | |
Wing b of |
|
Wing a of |
| Sixth corresponding mode | Wing b of |
|
|
Wing a of |
| Seventh corresponding mode | |
Wing b of |
Wing a of |
|
| Eighth corresponding mode | Wing b of |
|
Wing a of |
|
Table 1 shows eight corresponding modes of magnetic cores M1, M2, M3 and M4 and three magnetic cores of the invention
As shown in fig. 4, there are two pairs, i.e. 4 windings, wherein windings L1 and L2 are a first pair of windings, windings L3 and L4 are a second pair of windings, L1 is wound on core M1, L2 is wound on core M2, L3 is wound on core M3, and L4 is wound on core M4.
As shown in fig. 5, the first U-shaped magnetic core has two winding distribution modes, i.e., two-side distribution and middle distribution, when the magnetic flux direction is clockwise, the current direction is as shown in the figure, and when the magnetic flux direction is counterclockwise, the current direction is opposite to the direction marked in the figure. As shown in fig. 6, the wing a of the middle cross-shaped magnetic core has a winding distribution mode, which is a two-sided distribution, when the magnetic flux direction is clockwise, the current direction is as shown in the figure, and when the magnetic flux direction is counterclockwise, the current direction is opposite to the direction marked in the figure. As shown in fig. 7, the wings b of the middle cross-shaped magnetic core have a winding distribution mode, which is a two-sided distribution, when the magnetic flux direction is clockwise, the current direction is as shown in the figure, and when the magnetic flux direction is counterclockwise, the current direction is opposite to the direction marked in the figure. As shown in fig. 8, there are two winding distribution manners on the U-shaped magnetic core two, i.e. two-side distribution and middle distribution, respectively, when the magnetic flux direction is clockwise, the current direction is as shown in the figure, and when the magnetic flux direction is counterclockwise, the current direction is opposite to the direction marked in the figure.
For the first U-shaped magnetic core, when the first corresponding mode shown in the table is adopted, the winding on the magnetic core is L1, when the second corresponding mode shown in the table is adopted, the winding on the magnetic core is L1, when the third corresponding mode shown in the table is adopted, the winding on the magnetic core is L2, when the fourth corresponding mode shown in the table is adopted, the winding on the magnetic core is L2, when the fifth corresponding mode shown in the table is adopted, the winding on the magnetic core is L3, when the sixth corresponding mode shown in the table is adopted, the winding on the magnetic core is L3, when the seventh corresponding mode shown in the table is adopted, the winding on the magnetic core is L4, and when the eighth corresponding mode shown in the table is adopted, the winding on the magnetic core is L4.
For the second U-shaped magnetic core, when the first corresponding mode shown in the table is adopted, the winding on the magnetic core is L3, when the second corresponding mode shown in the table is adopted, the winding on the magnetic core is L4, when the third corresponding mode shown in the table is adopted, the winding on the magnetic core is L3, when the fourth corresponding mode shown in the table is adopted, the winding on the magnetic core is L4, when the fifth corresponding mode shown in the table is adopted, the winding on the magnetic core is L1, when the sixth corresponding mode shown in the table is adopted, the winding on the magnetic core is L2, when the seventh corresponding mode shown in the table is adopted, the winding on the magnetic core is L1, and when the eighth corresponding mode shown in the table is adopted, the winding on the magnetic core is L2.
For the wing a of the magnetic core 1, when the first correspondence shown in the table is adopted, the winding on the magnetic core is L2, when the second correspondence shown in the table is adopted, the winding on the magnetic core is L2, when the third correspondence shown in the table is adopted, the winding on the magnetic core is L1, when the fourth correspondence shown in the table is adopted, the winding on the magnetic core is L1, when the fifth correspondence shown in the table is adopted, the winding on the magnetic core is L4, when the sixth correspondence shown in the table is adopted, the winding on the magnetic core is L4, when the seventh correspondence shown in the table is adopted, the winding on the magnetic core is L3, and when the eighth correspondence shown in the table is adopted, the winding on the magnetic core is L3.
For the wing b of the middle cross-shaped magnetic core, when the first corresponding mode shown in the table is adopted, the winding on the magnetic core is L4, when the second corresponding mode shown in the table is adopted, the winding on the magnetic core is L3, when the third corresponding mode shown in the table is adopted, the winding on the magnetic core is L4, when the fourth corresponding mode shown in the table is adopted, the winding on the magnetic core is L3, when the fifth corresponding mode shown in the table is adopted, the winding on the magnetic core is L2, when the sixth corresponding mode shown in the table is adopted, the winding on the magnetic core is L1, when the seventh corresponding mode shown in the table is adopted, the winding on the magnetic core is L2, and when the eighth corresponding mode shown in the table is adopted, the winding on the magnetic core is L1.
Claims (3)
1. A three-core decoupling magnetic integrated transformer is characterized in that: the transformer comprises four groups of windings, a middle cross-shaped magnetic core, a first U-shaped magnetic core and a second U-shaped magnetic core, wherein the first U-shaped magnetic core and the second U-shaped magnetic core are respectively positioned on two sides of the middle cross-shaped magnetic core and are opposite in installation direction, 90 degrees are formed between the first U-shaped magnetic core and the second U-shaped magnetic core, the two wings of the middle cross-shaped magnetic core and the two wings of the middle cross-shaped magnetic core are in the same direction, the four paths of windings are respectively wound on the two wings of the middle cross-shaped magnetic core, the first U-shaped magnetic core and the second U-shaped magnetic core, the first U-shaped magnetic core and one wing of the middle cross-shaped magnetic core form a transformer, and the second U-shaped magnetic core and the other wing of the middle cross-shaped magnetic core form another transformer.
2. The three-core decoupled magnetically integrated transformer of claim 1, wherein: and the windings on the first U-shaped magnetic core and the second U-shaped magnetic core are respectively distributed in two modes, namely two-side distribution and middle distribution.
3. The three-core decoupled magnetically integrated transformer of claim 1, wherein: the windings on the two wings of the middle cross-shaped magnetic core are distributed in a two-side mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910434211.9A CN110148512B (en) | 2019-05-23 | 2019-05-23 | Three-magnetic-core decoupling magnetic integrated transformer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910434211.9A CN110148512B (en) | 2019-05-23 | 2019-05-23 | Three-magnetic-core decoupling magnetic integrated transformer |
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| Publication Number | Publication Date |
|---|---|
| CN110148512A CN110148512A (en) | 2019-08-20 |
| CN110148512B true CN110148512B (en) | 2021-08-06 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2374953Y (en) * | 1999-05-26 | 2000-04-19 | 沈墅 | Effective anti-interference transformer core |
| CN203406125U (en) * | 2013-06-20 | 2014-01-22 | 叶菁源 | Fully-symmetric integrated magnetics capable of eliminating direct current bias |
| CN205542299U (en) * | 2016-01-26 | 2016-08-31 | 深圳市创盈非晶新材料技术有限公司 | Novel high -efficient green energy -conserving nanocrystalline common mode inductance |
| CN106856140A (en) * | 2015-12-09 | 2017-06-16 | 乐金电子研发中心(上海)有限公司 | The common mode differential mode integrated inductor of bimag spatially interlaced arrangement |
| CN206480476U (en) * | 2017-01-06 | 2017-09-08 | 中科电力装备科技有限公司 | A kind of cross frame shape transformer structure |
| CN208796768U (en) * | 2018-07-21 | 2019-04-26 | 北京威扬永源科技发展有限公司 | A kind of transformer |
-
2019
- 2019-05-23 CN CN201910434211.9A patent/CN110148512B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2374953Y (en) * | 1999-05-26 | 2000-04-19 | 沈墅 | Effective anti-interference transformer core |
| CN203406125U (en) * | 2013-06-20 | 2014-01-22 | 叶菁源 | Fully-symmetric integrated magnetics capable of eliminating direct current bias |
| CN106856140A (en) * | 2015-12-09 | 2017-06-16 | 乐金电子研发中心(上海)有限公司 | The common mode differential mode integrated inductor of bimag spatially interlaced arrangement |
| CN205542299U (en) * | 2016-01-26 | 2016-08-31 | 深圳市创盈非晶新材料技术有限公司 | Novel high -efficient green energy -conserving nanocrystalline common mode inductance |
| CN206480476U (en) * | 2017-01-06 | 2017-09-08 | 中科电力装备科技有限公司 | A kind of cross frame shape transformer structure |
| CN208796768U (en) * | 2018-07-21 | 2019-04-26 | 北京威扬永源科技发展有限公司 | A kind of transformer |
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| CN110148512A (en) | 2019-08-20 |
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