CN205104331U - Integrated transformer of magnetic cores structure and magnetism - Google Patents
Integrated transformer of magnetic cores structure and magnetism Download PDFInfo
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- CN205104331U CN205104331U CN201520881209.3U CN201520881209U CN205104331U CN 205104331 U CN205104331 U CN 205104331U CN 201520881209 U CN201520881209 U CN 201520881209U CN 205104331 U CN205104331 U CN 205104331U
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Abstract
The utility model provides an integrated transformer of magnetic cores structure and magnetism. Magnetic cores structure includes bottom plate, two side columns, first wrapping post and second wrapping posts. The bottom plate has a somatic part and an extension, and this somatic part has mutually perpendicular's length direction and width direction, and the extension is extended along length direction by one side of this somatic part and forms, and the extension has 1 the 1st minimum width, and this somatic part has 1 the 2nd minimum width to a minimum width is lighter than the 2nd minimum width, two side columns set up in the both sides of this somatic part relatively, first wrapping post sets up on this somatic part to be located between two side columns, second wrapping post part at least sets up on the extension. The utility model discloses a plurality of wrapping posts have to functional device in supplying multiple difference sets up on a plurality of wrapping posts like inductive winding, transformer winding etc. Compare in traditional magnetic cores structure who only has a wrapping post, the utility model discloses a magnetic cores structure have compact structure, small, little advantage takes up space.
Description
Technical field
The utility model relates to a kind of core structure and a kind of transformer.
Background technology
LLC resonant converter can realize the Sofe Switch of semiconductor device, makes Switching Power Supply obtain the power density of more high efficiency and Geng Gao, is in the industry cycle paid close attention to widely and apply.As shown in Figure 1, in LLC resonant converter, two crucial magnetic elements are resonant inductance Lr and transformer Tx.On circuit connection structure, characteristic feature is that the former limit winding Np of resonant inductance Lr and transformer Tx connects.Traditional resonant inductance Lr and transformer Tx is respectively independently core structure, needs to occupy larger space, and cost is higher.
How to research and develop a kind of small volume, lower-cost core structure become industry need solve a problem.
Summary of the invention
A main purpose of the present utility model is to overcome above-mentioned the deficiencies in the prior art, provides a kind of core structure of compact conformation;
Another main purpose of the present utility model is to overcome above-mentioned the deficiencies in the prior art, provides a kind of magnetic integrated transformer of compact conformation.
Additional aspect of the present utility model and advantage will partly be set forth in the following description, and partly will become obvious from description, or can the acquistion by practice of the present utility model.
According to an aspect of the present utility model, a kind of core structure, comprises a base plate, two side columns, one first wrapping post and one second wrapping posts.Base plate has a body and an extension, described body has a length direction and a Width, described length direction is vertical with described Width, described extension is extended along described length direction by the side of described body and is formed, described extension has one first minimum widith, described body has one second minimum widith, and described first minimum widith is less than described second minimum widith; Two side columns are relatively arranged on the both sides of described body, and each described side column extends along described length direction; First wrapping post is arranged on described body, and between two described side columns; Second wrapping post is arranged on described extension at least partly.
According to an execution mode of the present utility model, there is between the inner side of described second wrapping post and described body a gap or not there is gap.
According to an execution mode of the present utility model, also comprise a top cover, combine with described side column, described first wrapping post and described second wrapping post, and the first air gap is formed on described first wrapping post, described second wrapping post forms interstice, and described first air gap is not more than described interstice.
According to an execution mode of the present utility model, described second wrapping post part is arranged on described body.
According to an execution mode of the present utility model, described extension is trapezoidal.
According to an execution mode of the present utility model, described extension only comprises described second wrapping post.
According to an execution mode of the present utility model, the width of described second wrapping post equals the minimum widith of described extension.
According to an execution mode of the present utility model, the medial surface of described second wrapping post is arcwall face.
According to an execution mode of the present utility model, described arcwall face protrudes towards the lateral surface of described second wrapping post.
According to another aspect of the present utility model, a kind of magnetic integrated transformer, comprises core structure and winding, and wherein core structure is core structure described in the utility model; Winding comprises Transformer Winding and inductor winding, on the first wrapping post that wherein said Transformer Winding and inductor winding are set around described core structure respectively and/or the second wrapping post.
According to an execution mode of the present utility model, described Transformer Winding comprises former limit winding, and the number of turn of described former limit winding is identical with the number of turn of described inductor winding.
According to an execution mode of the present utility model, described former limit winding and described inductor winding are jointly around on described first wrapping post and described second wrapping post.
According to an execution mode of the present utility model, described Transformer Winding comprises former limit winding, and described former limit winding comprises the first former limit winding and the second former limit winding that are connected in series.
According to an execution mode of the present utility model, the number of turn of described first former limit winding is identical with the number of turn of described inductor winding.
According to an execution mode of the present utility model, described first former limit winding and described inductor winding are jointly around on described first wrapping post and described second wrapping post, and described second former limit winding is around on the first wrapping post.
According to an execution mode of the present utility model, described inductor winding is the winding of a resonant inductance.
According to an execution mode of the present utility model, described resonant inductance is applied to a LLC resonant converter.
As shown from the above technical solution, the utility model possess in following advantage and good effect one of at least:
In core structure of the present utility model, base plate has a body and an extension, body and extension are provided with a wrapping post separately, therefore the utility model has multiple wrapping post, so that for multiple different function element as on inductor winding, Transformer Winding etc. are arranged at multiple wrapping post.Compared to traditional core structure only with a wrapping post, core structure of the present utility model has compact conformation, volume is little, take up space little advantage.
The utility model magnetic integrated transformer, is integrated in inductance and transformer on same core structure, compact conformation, takes up room little.The utility model magnetic integrated transformer is used can effectively to improve switch power efficiency and power density.
Accompanying drawing explanation
Describe its example embodiment in detail by referring to accompanying drawing, above-mentioned and further feature of the present utility model and advantage will become more obvious.
Fig. 1 illustrates LLC circuit topology figure;
Fig. 2 is the structural representation of the core structure according to an illustrative embodiments;
Fig. 3 is the structural representation of the magnetic integrated transformer according to an illustrative embodiments;
Fig. 4 is the structural representation of the magnetic integrated transformer according to another illustrative embodiments.
Embodiment
More fully example embodiment is described referring now to accompanying drawing.But example embodiment can be implemented in a variety of forms, and should not be understood to be limited to execution mode set forth herein; On the contrary, these execution modes are provided to make the utility model comprehensively with complete, and the design of example embodiment will be conveyed to those skilled in the art all sidedly.Reference numeral identical in figure represents same or similar structure, thus will omit their detailed description.
Core structure
The utility model provides a kind of core structure, multiple wrapping post is arranged on same magnetic core by it simultaneously, to realize the integrated of inductance and transformer, forms the core structure of compact conformation, to reduce the space occupied, and provide a kind of core structure being easy to manufacture.
In the utility model, Width D is defined as: along the line direction of the central point of connection two side columns 21 in core structure.Length direction L is defined as the direction vertical with Width D.
See the structural representation that Fig. 2, Fig. 2 are the core structures according to an illustrative embodiments.The utility model core structure one execution mode, comprises base plate 10, two side columns 21,1 first wrapping post 22 and one second wrapping post 23.
Base plate 10 has body 11 and an extension 12.In this embodiment, body 11 is rectangular, and it has an a length direction L and Width D, and length direction L is vertical with Width D, but the utility model is not limited thereto, and body 11 may also be in other shapes.Extension 12 is extended to length direction L by the side of body 11 and is formed.The shape of extension 12 can be an isosceles trapezoid, has one first minimum widith W1.Body 11 has one second minimum widith W2, and the first minimum widith W1 is less than the second minimum widith W2, to reduce the volume of core structure, and reduces costs.
Two side columns 21 are arranged at the both sides of body 11, and mutually faced by.Each side column 21 extends along the length direction L of base plate 10.
First wrapping post 22 is arranged on body 11, and between two side columns 21.
Second wrapping post 23 is arranged on extension 12, and has a gap d between the inner side of the second wrapping post 23 (side near body 11) and body 11, and the scope of this gap d can be more than or equal to 0.1mm.The grinding that gap d facilitates air gap on the second wrapping post 23 is set between second wrapping post 23 and body 11.The width W 3 of the second wrapping post 23 equals the minimum widith W1 of extension 12.On the other hand, in this execution mode, extension 12 is only provided with the second wrapping post 23, and does not arrange other structures as the first wrapping post 22 etc.
The medial surface of the second wrapping post 23 is arcwall face, and arcwall face protrudes towards the lateral surface of the second wrapping post 23.But the utility model is not limited thereto, in other embodiments, the medial surface of the second wrapping post 23 also can be other shapes such as flat shape.
Although in the above-described embodiments, the width W 3 of the second wrapping post 23 equals the minimum widith W1 of extension 12, and the utility model is not limited to this.According to the utility model, the width W 3 of the second wrapping post 23 also can be less than or greater than the minimum widith W1 of extension 12.
Although in the above-described embodiments, be provided with gap d between the second wrapping post 23 and body 11, the utility model is not limited to this.According to the utility model, between the second wrapping post 23 and body 11, also gap can not be had.In addition, in another embodiment, the second wrapping post 23 can also partly be arranged on body 11.That is, the second wrapping post 23 has allowed part overlapping region with body 11.
Although in the above-described embodiments, extension 12 is an isosceles trapezoid, and the utility model is not limited to this.According to the utility model, shape such as all right rectangular trapezoidal other trapezoidal shapes such as grade of extension 12, or semicircular in shape, etc.As long as extend from the side of body 11 to length direction L, and its minimum widith is less than the extension 12 of the minimum widith of body 11, all meets Spirit Essence of the present utility model.
In another embodiment, core structure also comprises a top cover (not shown), and top cover and side column 21, first wrapping post 22 and the second wrapping post 23 combine.First wrapping post 22 forms the first air gap, the second wrapping post forms interstice, and the first air gap is less than or equal to interstice.
In the utility model core structure, the first wrapping post 22, second wrapping post 23 can be respectively used to arrange Transformer Winding and inductor winding, thus jointly form transformer and inductance with side column 21 and top cover.
Magnetic integrated transformer
See the structural representation that Fig. 3, Fig. 3 are the magnetic integrated transformers according to an illustrative embodiments.The utility model magnetic integrated transformer one execution mode comprises core structure and winding.
Core structure comprises base plate 10, two side columns 21,1 first wrapping post 22,1 second wrapping post 23 and top cover 13.In other embodiments, core structure also can not arrange top cover 13.In the present embodiment, top cover 13 is sheet, and in other embodiments, top cover 13 also can be other shape.This core structure can be aforementioned core structure of the present utility model.
Winding comprises Transformer Winding and inductor winding 51.Transformer Winding comprises former limit winding 41 and vice-side winding 40, and former limit winding can comprise the first former limit winding 411 and the second former limit winding 412 be connected in series further.
As shown in Figure 3, vice-side winding 40, first former limit winding 411, the second former limit winding 412 in this execution mode and inductor winding 51 can be Foil winding, as copper sheet.As shown in Figure 3, around the first wrapping post 22 and common winding one winding of the second wrapping post 23, the part corresponding to the first wrapping post 22 of this winding forms the first former limit winding 411, part corresponding to the second wrapping post 23 forms inductor winding 51, and now the first former limit winding 411 is identical with the number of turn of inductor winding 51.In this embodiment, vice-side winding 40 and the second former limit winding 412 are all set around on the first wrapping post 22.
Although in the above-described embodiments, former limit winding comprises the first former limit winding 411 and the second former limit winding 412 be connected in series, and the utility model is not limited to this.See the structural representation that Fig. 4, Fig. 4 are the magnetic integrated transformers according to an illustrative embodiments.According to the utility model, former limit winding 41 also can only include a winding.This former limit winding 41 and inductor winding 51 can jointly around on the first wrapping posts 22 and the second wrapping post 23.Now, the number of turn of this former limit winding 41 can be identical with the number of turn of inductor winding 51.Certainly in other embodiments, this former limit winding and inductor winding also can be set around on different wrapping posts respectively, and the number of turn of this former limit winding also can be different from the number of turn of inductor winding.
Although in the above-described embodiments, each winding is Foil winding, and the utility model is not limited to this, can be insulated conductor winding, can be also pcb board winding, not limit this utility model.
In one embodiment, magnetic integrated transformer is applied to a LLC resonant converter, then former limit winding 41 and vice-side winding 40 form the winding of transformer, and inductor winding 51 forms the winding of resonant inductance.Certainly, above-mentioned magnetic integrated transformer also can be applicable in other converter, and the utility model does not limit.
The utility model magnetic integrated transformer, is integrated in inductance and transformer on same core structure, compact conformation, takes up room little.The utility model magnetic integrated transformer is used can effectively to improve switch power efficiency and power density.
Below illustrative embodiments of the present utility model is illustrate and described particularly.Should be appreciated that, the utility model is not limited to disclosed execution mode, and on the contrary, the utility model intention contains and is included in various amendment in the spirit and scope of claims and equivalent arrangements.
Claims (17)
1. a core structure, is characterized in that, comprising:
One base plate, there is a body and an extension, described body has a length direction and a Width, described length direction is vertical with described Width, described extension is extended along described length direction by the side of described body and is formed, described extension has one first minimum widith, and described body has one second minimum widith, and described first minimum widith is less than described second minimum widith;
Two side columns, are relatively arranged on the both sides of described body, and each described side column extends along described length direction;
One first wrapping post, is arranged on described body, and between two described side columns; And
One second wrapping post, is arranged on described extension at least partly.
2. core structure as claimed in claim 1, is characterized in that having a gap between the inner side of described second wrapping post and described body or do not have gap.
3. core structure as claimed in claim 1, it is characterized in that, also comprise a top cover, combine with described side column, described first wrapping post and described second wrapping post, and the first air gap is formed on described first wrapping post, described second wrapping post forms interstice, and described first air gap is not more than described interstice.
4. core structure as claimed in claim 1, it is characterized in that, described second wrapping post part is arranged on described body.
5. core structure as claimed in claim 1, it is characterized in that, described extension is trapezoidal.
6. core structure as claimed in claim 1, it is characterized in that, described extension only comprises described second wrapping post.
7. the core structure as described in claim 5 or 6, is characterized in that, the width of described second wrapping post equals the minimum widith of described extension.
8. core structure as claimed in claim 1, it is characterized in that, the medial surface of described second wrapping post is arcwall face.
9. core structure as claimed in claim 8, it is characterized in that, described arcwall face protrudes towards the lateral surface of described second wrapping post.
10. a magnetic integrated transformer, is characterized in that, comprising:
Core structure is the core structure as described in any one of claim 1-9; And
Winding, comprises Transformer Winding and inductor winding, on the first wrapping post that wherein said Transformer Winding and described inductor winding are set around described core structure respectively and/or the second wrapping post.
11. magnetic integrated transformers as claimed in claim 10, it is characterized in that, described Transformer Winding comprises former limit winding, and the number of turn of described former limit winding is identical with the number of turn of described inductor winding.
12. magnetic integrated transformers as claimed in claim 11, is characterized in that, described former limit winding and described inductor winding are jointly around on described first wrapping post and described second wrapping post.
13. magnetic integrated transformers as claimed in claim 10, it is characterized in that, described Transformer Winding comprises former limit winding, and described former limit winding comprises the first former limit winding and the second former limit winding that are connected in series.
14. magnetic integrated transformers as claimed in claim 13, is characterized in that, the number of turn of described first former limit winding is identical with the number of turn of described inductor winding.
15. magnetic integrated transformers as claimed in claim 14, is characterized in that, described first former limit winding and described inductor winding are jointly around on described first wrapping post and described second wrapping post, and described second former limit winding is around on the first wrapping post.
16. magnetic integrated transformers as claimed in claim 10, it is characterized in that, described inductor winding is the winding of a resonant inductance.
17. magnetic integrated transformers as claimed in claim 16, it is characterized in that, described resonant inductance is applied to a LLC resonant converter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520881209.3U CN205104331U (en) | 2015-11-06 | 2015-11-06 | Integrated transformer of magnetic cores structure and magnetism |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520881209.3U CN205104331U (en) | 2015-11-06 | 2015-11-06 | Integrated transformer of magnetic cores structure and magnetism |
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| CN205104331U true CN205104331U (en) | 2016-03-23 |
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| CN105810406A (en) * | 2016-04-27 | 2016-07-27 | 华为技术有限公司 | Power magnetic component and power module |
| CN107437456A (en) * | 2016-05-25 | 2017-12-05 | 台达电子企业管理（上海）有限公司 | Core structure and magnetic element |
| WO2020034183A1 (en) * | 2018-08-17 | 2020-02-20 | 深圳欣锐科技股份有限公司 | Integrated transformer and integrated switching power supply application circuit applying integrated transformer |
| WO2021047207A1 (en) * | 2019-09-11 | 2021-03-18 | 华为技术有限公司 | Magnetic device and bidirectional dc converter |
| CN112532052A (en) * | 2019-09-18 | 2021-03-19 | 台达电子工业股份有限公司 | Power conversion system and magnetic element thereof |
| CN112687458A (en) * | 2019-10-18 | 2021-04-20 | 联合汽车电子有限公司 | Multiphase staggered parallel integrated inductor and magnetic integrated circuit |
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| CN114156041A (en) * | 2021-12-07 | 2022-03-08 | 捷蒽迪电子科技(上海)有限公司 | Magnetic core structure and magnetic element |
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| CN105810406A (en) * | 2016-04-27 | 2016-07-27 | 华为技术有限公司 | Power magnetic component and power module |
| CN105810406B (en) * | 2016-04-27 | 2018-10-12 | 华为技术有限公司 | A kind of power magnetic cell and power module |
| CN107437456A (en) * | 2016-05-25 | 2017-12-05 | 台达电子企业管理（上海）有限公司 | Core structure and magnetic element |
| US10784034B2 (en) | 2016-05-25 | 2020-09-22 | Delta Electronics (Shanghai) Co., Ltd | Core structure and magnetic device |
| CN107437456B (en) * | 2016-05-25 | 2021-03-23 | 台达电子企业管理（上海）有限公司 | Magnetic core structure and magnetic element |
| WO2020034183A1 (en) * | 2018-08-17 | 2020-02-20 | 深圳欣锐科技股份有限公司 | Integrated transformer and integrated switching power supply application circuit applying integrated transformer |
| WO2021047207A1 (en) * | 2019-09-11 | 2021-03-18 | 华为技术有限公司 | Magnetic device and bidirectional dc converter |
| US11955883B2 (en) | 2019-09-11 | 2024-04-09 | Huawei Technologies Co., Ltd. | Magnetic apparatus and two-way DC converter circuit |
| CN112532052B (en) * | 2019-09-18 | 2022-04-05 | 台达电子工业股份有限公司 | Power conversion system and magnetic element thereof |
| US11205963B2 (en) | 2019-09-18 | 2021-12-21 | Delta Electronics, Inc. | Multiphase buck converter with extended duty cycle range using multiple bootstrap capacitors |
| US11205958B2 (en) | 2019-09-18 | 2021-12-21 | Delta Electronics, Inc. | Power conversion system |
| US11309878B2 (en) | 2019-09-18 | 2022-04-19 | Delta Electronics, Inc. | Power conversion system |
| US11532428B2 (en) | 2019-09-18 | 2022-12-20 | Delta Electronics, Inc. | Power conversion system and magnetic component thereof |
| CN112532052A (en) * | 2019-09-18 | 2021-03-19 | 台达电子工业股份有限公司 | Power conversion system and magnetic element thereof |
| CN112687458A (en) * | 2019-10-18 | 2021-04-20 | 联合汽车电子有限公司 | Multiphase staggered parallel integrated inductor and magnetic integrated circuit |
| CN114156041A (en) * | 2021-12-07 | 2022-03-08 | 捷蒽迪电子科技(上海)有限公司 | Magnetic core structure and magnetic element |
| CN114156041B (en) * | 2021-12-07 | 2024-01-12 | 捷蒽迪电子科技(上海)有限公司 | Magnetic core structure and magnetic element |
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