CN204441077U - A kind of winding construction adopting single magnetic core to realize multiple independent magnetic cell - Google Patents
A kind of winding construction adopting single magnetic core to realize multiple independent magnetic cell Download PDFInfo
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- CN204441077U CN204441077U CN201420604348.7U CN201420604348U CN204441077U CN 204441077 U CN204441077 U CN 204441077U CN 201420604348 U CN201420604348 U CN 201420604348U CN 204441077 U CN204441077 U CN 204441077U
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Abstract
Adopt single magnetic core to realize a winding construction for multiple independent magnetic cell, it is characterized in that, magnetic core has first, and second and third leg; First magnetic element and second magnetic element are respectively first transformer and the second transformer with former limit winding and vice-side winding; The former limit of the first transformer and vice-side winding are all around on third leg; Respectively etc. number of turn series connection is around on first and second legs of magnetic core for the former limit of the second transformer and vice-side winding, and coiling direction on magnetic core first and second legs is contrary.Or winding construction to be changed into the 3rd magnetic element in above-mentioned same core structure be around the simplex winding inductance on third leg; 4th magnetic element is the transformer with former limit winding and vice-side winding, and respectively etc. number of turn series connection is around on first and second legs of magnetic core for the former limit of this transformer and vice-side winding, and coiling direction on magnetic core first and second legs is contrary.The utility model provides a kind of winding construction using single magnetic core to form multiple separate magnetic components.The method can reduce product cost and the volume of Switching Power Supply effectively.
Description
Technical field
The utility model relates to field of switch power, the transformer particularly used in Switching Power Supply and inductor.
Background technology
Switching Power Supply occupies of paramount importance status due to its small size and high efficiency in present generation power supplies.
Magnetic element occupies very consequence in the operation principle of Switching Power Supply.Magnetic element mainly plays two effects in Switching Power Supply: the electric isolution (transformer) on former and deputy limit and store energy (inductance) in each switch periods.
In the design of traditional magnetic element, magnetic element comprises a magnetic core and around the one or more windings on this magnetic core.It is the winding construction of the traditional transformer of coiling on the E shape magnetic core of use three legs and I shape magnetic core shown in Fig. 1.Magnetic element occupies the larger element of volume in Switching Power Supply often.According to the mode of operation of each magnetic element, the utilance of many magnetic cores is not high.Therefore the more than magnetic element of same core configurations is utilized just to have great practical value.
Utility model content
Technical problem to be solved in the utility model is to provide and a kind ofly adopts single magnetic core to realize multiple winding construction with the magnetic cell of independent electrical characteristic.
The utility model realizes above-mentioned purpose by following technical proposals:
Adopt single magnetic core to realize a winding construction for multiple independent magnetic cell, it is characterized in that, magnetic core has first, and second and third leg; First magnetic element and second magnetic element are respectively first transformer and the second transformer with former limit winding and vice-side winding; The former limit of the first transformer and vice-side winding are all around on third leg; Respectively etc. number of turn series connection is around on first and second legs of magnetic core for the former limit of the second transformer and vice-side winding, and coiling direction on magnetic core first and second legs is contrary, as shown in Fig. 2.
Adopt single magnetic core to realize a winding construction for multiple independent magnetic cell, it is characterized in that, magnetic core has first, and second and third leg; The third leg of magnetic core has air gap, and the 3rd magnetic element is around the simplex winding inductance on third leg; 4th magnetic element is the transformer with former limit winding and vice-side winding, and respectively etc. number of turn series connection is around on first and second legs of magnetic core for the former limit of this transformer and vice-side winding, and coiling direction on magnetic core first and second legs is contrary.
Accompanying drawing explanation
1 is the conventional transformer with former limit winding and vice-side winding.
Fig. 2 is the example adopting the utility model to realize two separated transformers on single magnetic core.
Fig. 3 is the example adopting the utility model to realize a separated transformer and a separate inductor on single magnetic core.
Embodiment
The utility model preferred embodiment is provided, to describe the technical solution of the utility model in detail below in conjunction with accompanying drawing.
The utility model provides a kind of winding construction adopting single magnetic core to realize multiple independent magnetic cell.
Shown in Fig. 2 is adopt to have Article 1 leg 201, and the magnetic core of three legs of Article 2 leg 202 and third leg 203 forms the winding method that two have independent electrical characteristic transformer.Article 1, leg 201 and Article 2 leg 202 are respectively side column, post centered by third leg 203.First transformer T1 is by the former limit winding T1 be wound on third leg 203
_ former limitwith vice-side winding T1
_ secondaryform.Second transformer T2 is by the former limit winding T2 be wound on Article 1 leg 201 and Article 2 leg 202
_ former limitwith vice-side winding T2
_ secondaryform.The former and deputy limit winding of T1 is traditional winding.The winding of the former and deputy limit winding of T2 is identical, holds initial respectively by "+" of winding, along clockwise direction on Article 1 leg 201 around the number of turns determined (being two circles in Fig. 2 example), then to continue on Article 2 leg 202 counterclockwise around the same number of turns.The magnetic flux produced by the winding on Article 1 leg 201 is identical with the magnetic flux amplitude that winding on Article 2 leg 202 produces, but direction in newel on the contrary, therefore can not produce induced voltage in the winding of the first transformer T1.The magnetic flux produced in newel by the former vice-side winding of the first transformer, because being assigned in two side columns equably, also can not produce induced voltage in T2 winding.Therefore, transformer T1 and transformer T2 just can work alone, be independent of each other.From the angle of practicality, generally can add certain air gap on three legs of magnetic core, to ensure that magnetic flux is uniformly distributed according to the form of design preferably.If for the electric source topology of flyback class, the magnetizing inductance of transformer needs stored energy, and larger air gap will be necessary.
Shown in Fig. 3 is adopt the magnetic core with Article 1 leg 301, Article 2 leg 302 and third leg 303 to form winding method that a transformer T and with independent electrical characteristic has the inductance L of independent electrical characteristic.The winding of transformer T is identical with the second transformer that epimere describes.The coil of inductance L is around on newel.In view of above-mentioned same reason, both magnetic fluxs all do not produce induced voltage in winding each other.Because inductance needs the electric current that carrying is larger, storage power, has illustrated larger air gap in Fig. 3.
Although what the single magnetic core of above-mentioned employing realized that the winding construction of multiple independent magnetic cell just carries out for magnetic core combine by E shape+I shape describes, its principle is applicable equally to multiple core structure.
Although the foregoing describe embodiment of the present utility model, but those skilled in the art is to be understood that, these only illustrate, under the prerequisite not deviating from principle of the present utility model and essence, can make various changes or modifications to these execution modes.Therefore, protection range of the present utility model is defined by the appended claims.
Claims (2)
1. adopt single magnetic core to realize the winding construction of multiple independent magnetic cell, it is characterized in that, magnetic core has first, and second and third leg; First magnetic element and second magnetic element are respectively first transformer and the second transformer with former limit winding and vice-side winding; The former limit of the first transformer and vice-side winding are all around on third leg; Respectively etc. number of turn series connection is around on first and second legs of magnetic core for the former limit of the second transformer and vice-side winding, and coiling direction on magnetic core first and second legs is contrary.
2. adopt single magnetic core to realize the winding construction of multiple independent magnetic cell, it is characterized in that, magnetic core has first, and second and third leg; The third leg of magnetic core has air gap, and the 3rd magnetic element is around the simplex winding inductance on third leg; 4th magnetic element is the transformer with former limit winding and vice-side winding, and respectively etc. number of turn series connection is around on first and second legs of magnetic core for the former limit of this transformer and vice-side winding, and coiling direction on magnetic core first and second legs is contrary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420604348.7U CN204441077U (en) | 2014-10-17 | 2014-10-17 | A kind of winding construction adopting single magnetic core to realize multiple independent magnetic cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420604348.7U CN204441077U (en) | 2014-10-17 | 2014-10-17 | A kind of winding construction adopting single magnetic core to realize multiple independent magnetic cell |
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| CN204441077U true CN204441077U (en) | 2015-07-01 |
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| CN201420604348.7U Active CN204441077U (en) | 2014-10-17 | 2014-10-17 | A kind of winding construction adopting single magnetic core to realize multiple independent magnetic cell |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023123223A1 (en) * | 2021-12-30 | 2023-07-06 | Telefonaktiebolaget Lm Ericsson (Publ) | Integrated magnetic assembly and magnetic core assembly |
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2014
- 2014-10-17 CN CN201420604348.7U patent/CN204441077U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023123223A1 (en) * | 2021-12-30 | 2023-07-06 | Telefonaktiebolaget Lm Ericsson (Publ) | Integrated magnetic assembly and magnetic core assembly |
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