CN107633936A - LLC transformers and its implementation and core assembly - Google Patents
LLC transformers and its implementation and core assembly Download PDFInfo
- Publication number
- CN107633936A CN107633936A CN201710763423.2A CN201710763423A CN107633936A CN 107633936 A CN107633936 A CN 107633936A CN 201710763423 A CN201710763423 A CN 201710763423A CN 107633936 A CN107633936 A CN 107633936A
- Authority
- CN
- China
- Prior art keywords
- core
- magnetic core
- wrapping post
- length
- 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.)
- Pending
Links
Abstract
The present disclosure discloses a kind of LLC transformers, its implementation and core assembly, LLC transformers include skeleton, including accommodation space, Internal baffle, the first side shield and the second side shield, the first winding area is formed between first side shield and Internal baffle, the second winding area is formed between the second side shield and Internal baffle；Primary side winding, it is set around in the first winding area；Vice-side winding, it is set around in the second winding area；And core assembly, including wrapping post, wrapping post be arranged in accommodation space, and include the air gap that a length is d on wrapping post, the length between the center line of air gap and the center line of core assembly be L, and L is more than zero.
Description
Technical field
This disclosure relates to a kind of LLC transformers, more particularly to a kind of LLC transformers and its implementation and core assembly.
Background technology
With the progress of modern power electronics technology, promote Switching Power Supply constantly to high frequency, integrated, modular side
To development.In HF power conversion field, LLC converters have obtained very extensive application at present, and the addition of resonant network causes
Switching tube in LLC converters can realize ZVS in full-load range, and secondary commutation diode realizes ZCS, passes through Sofe Switch
Mode significantly reduces switching loss, Switching Power Supply can be allowed to be operated in higher frequency so as to reduce machine volume, improve power supply
Power density and reliability.At present, further to reduce the volume of LLC converters, improving power density, integrated magnetic is passed through
The leakage inductance of transformer can be utilized as to the resonant inductance of LLC converters.
In actual applications, the leakage inductance value that different LLC converters need is different, and existing LLC transformers exist flexible
Property it is poor, volume is big, when needing not high a large amount of artificial works, leakage inductance value accuracy and batch production the shortcomings of uniformity difference, therefore
It is badly in need of developing a kind of LLC transformers that can overcome drawbacks described above.
Above- mentioned information is only used for strengthening the understanding to the background of the disclosure, therefore it disclosed in the background section
It can include not forming the information to prior art known to persons of ordinary skill in the art.
The content of the invention
In order to overcome the above-mentioned problems of the prior art, the purpose of the disclosure is to provide a kind of LLC transformers, including
Skeleton, primary side winding, vice-side winding and core assembly.Skeleton includes accommodation space, Internal baffle, the first side shield and the second side block
Plate, the first winding area is formed between the first side shield and Internal baffle, the second coiling is formed between the second side shield and Internal baffle
Region；Primary side winding, it is set around in the first winding area；Vice-side winding, it is set around in the second winding area；Core assembly includes
Wrapping post, wrapping post are arranged in accommodation space, and include the air gap that length is d, the center line and magnetic core of air gap on wrapping post
Length between the center line of component is L, and L is more than zero.
In one or more embodiments, wrapping post includes magnetic pole, the length and d of the length adjustment L by adjusting magnetic pole
Length.
In one or more embodiments, core assembly includes the first E shapes magnetic core, the 2nd E shapes magnetic core and magnetic pole, the first E
The center pillar of shape magnetic core, the center pillar of the 2nd E shape magnetic cores and magnetic pole form wrapping post, and air gap is located at the center pillar and magnetic of the first E shape magnetic cores
Between post, and the length adjustment L length and d length of the center pillar of the first E shape magnetic cores are adjusted simultaneously.
In one or more embodiments, core assembly includes U-shaped magnetic core, E shapes magnetic core and magnetic pole, the center pillar of E shape magnetic cores
And magnetic pole forms wrapping post, and air gap is between U-shaped magnetic core and magnetic pole.
In one or more embodiments, core assembly includes the first U-shaped magnetic core, the second U-shaped magnetic core and magnetic pole, the first U
One side column of shape magnetic core, a side column of the second U-shaped magnetic core and magnetic pole form wrapping post, and air gap is located at the side column of the first U-shaped magnetic core
Between magnetic pole, and the length adjustment L length and d length of the side column of the first U-shaped magnetic core are adjusted simultaneously.
In one or more embodiments, core assembly includes ┌ shapes magnetic core, U-shaped magnetic core and magnetic pole, one side of U-shaped magnetic core
Post and magnetic pole form wrapping post, and air gap is located between yoke portion and the magnetic pole of ┌ shape magnetic cores.
In one or more embodiments, wrapping post includes the first wrapping post and the second wrapping post, air gap positioned at first around
Between terminal and the second wrapping post, the length of the first wrapping post is more than the length of the second wrapping post, by adjusting the first wrapping post
With the length adjustment L length and d length of the second wrapping post.
In one or more embodiments, core assembly includes the first E shapes magnetic core and the 2nd E shape magnetic cores, the first wrapping post
For the center pillar of the first E shape magnetic cores, the second wrapping post is the center pillar of the 2nd E shape magnetic cores.
In one or more embodiments, core assembly includes the first U-shaped magnetic core and the second U-shaped magnetic core, the first wrapping post
For a side column of the first U-shaped magnetic core, the second wrapping post is a side column of the second U-shaped magnetic core.
The disclosure also provides a kind of method of the leakage inductance of regulation LLC transformers, including provides skeleton, and skeleton includes accommodating sky
Between, Internal baffle, the first side shield and the second side shield, form the first winding area between the first side shield and Internal baffle, second
The second winding area is formed between side shield and Internal baffle；There is provided primary side winding, be set around the first winding area, there is provided secondary around
Group, it is set around the second winding area；Core assembly, including wrapping post are provided, wrapping post is arranged in accommodation space, and coiling
Include the air gap that length is d on post, the length between the center line of air gap and the center line of core assembly is L, and L is more than zero；With
And regulation L and d length is to adjust the leakage inductance of LLC transformers.
In one or more embodiments, wrapping post includes a magnetic pole, adjusts L and d length and also includes regulation magnetic pole
Length is to adjust L and d length.
In one or more embodiments, core assembly includes the first E magnetic cores, the 2nd E shapes magnetic core and magnetic pole, the first E shapes
The center pillar of magnetic core, the center pillar of the 2nd E shape magnetic cores and magnetic pole form wrapping post, and air gap is located at the center pillar and magnetic pole of the first E shape magnetic cores
Between.
In one or more embodiments, adjusting L and d length also includes the length of center pillar of the first E shape magnetic cores of regulation
To adjust L and d length.
In one or more embodiments, core assembly includes U-shaped magnetic core, E shapes magnetic core and magnetic pole, the center pillar of E shape magnetic cores
And magnetic pole forms wrapping post, and air gap is between U-shaped magnetic core and magnetic pole.
In one or more embodiments, core assembly includes the first U magnetic cores, the second U-shaped magnetic core and magnetic pole, the first U-shaped
One side column of magnetic core, a side column of the second U-shaped magnetic core and magnetic pole form wrapping post, air gap be located at the first U-shaped magnetic core side column and
Between magnetic pole.
In one or more embodiments, adjusting L and d length also includes the length of side column of the first U-shaped magnetic core of regulation
To adjust L and d length.
In one or more embodiments, core assembly includes ┌ shapes magnetic core, U-shaped magnetic core and magnetic pole, one side of U-shaped magnetic core
Post and magnetic pole form wrapping post, and air gap is located between yoke portion and the magnetic pole of ┌ shape magnetic cores.
In one or more embodiments, wrapping post includes the first wrapping post and the second wrapping post, air gap positioned at first around
Between terminal and the second wrapping post, the length of the first wrapping post is more than the length of the second wrapping post, and regulation L and d length is also wrapped
Include the length of the first wrapping post of regulation and the second wrapping post.
The disclosure also provides a kind of core assembly of LLC transformers, core assembly and a primary side winding and a vice-side winding
LLC transformers are collectively formed, core assembly includes wrapping post, and includes the air gap that length is d on wrapping post, wherein in air gap
Length between heart line and the center line of core assembly is L, and L is more than zero.
In one or more embodiments, core assembly includes the first E shapes magnetic core, the 2nd E shapes magnetic core and magnetic pole, the first E
The center pillar of shape magnetic core, the center pillar of the 2nd E shape magnetic cores and magnetic pole form wrapping post, and air gap be located at the first E shape magnetic cores center pillar and
Between magnetic pole.
In one or more embodiments, core assembly includes U-shaped magnetic core, E shapes magnetic core and magnetic pole, the center pillar of E shape magnetic cores
And magnetic pole forms wrapping post, and air gap is between U-shaped magnetic core and magnetic pole.
In one or more embodiments, core assembly includes the first U-shaped magnetic core, the second U-shaped magnetic core and magnetic pole, the first U
One side column of shape magnetic core, a side column of the second U-shaped magnetic core and magnetic pole form wrapping post, and air gap is located at the side of the first U-shaped magnetic core
Between post and magnetic pole.
In one or more embodiments, core assembly includes ┌ shapes magnetic core, U-shaped magnetic core and magnetic pole, one side of U-shaped magnetic core
Post and magnetic pole form wrapping post, and air gap is located between yoke portion and the magnetic pole of ┌ shape magnetic cores.
Compared with prior art, the disclosure has following all or part of beneficial effect：The disclosure is by adjusting wrapping post
On magnetic core regulation air gap length d and the center line of air gap and the center line of core assembly between length L, L is more than zero, with
The leakage inductance of this regulation LLC transformer, and keep magnetizing inductance constant, magnetic core is by magnetic core mould and is machined into, and it has
0.05mm high manufacturing accuracy, therefore the leakage inductance value of the LLC transformers of the disclosure can be with precisely controlled, and do not need a large amount of
Manual operation, therefore produce in batches when homogeneity of product it is also higher.
Brief description of the drawings
Detailed description below considering in conjunction with the accompanying drawings to preferred embodiment of the present disclosure, the various targets of the disclosure,
Feature and advantage will become apparent.Accompanying drawing is only the exemplary diagram of the disclosure, is not necessarily drawn to scale.
In the accompanying drawings, same reference represents same or similar part all the time.Wherein：
Figure 1A is the explosive view of the LLC transformers of an embodiment of the disclosure.
Figure 1B is the combination diagram of the LLC transformers described in Figure 1A.
Fig. 2 is the structural representation of the LLC transformers of an embodiment of the disclosure.
Fig. 3 is the structural representation of the LLC transformers of an embodiment of the disclosure.
Fig. 4 is the structural representation of the LLC transformers of an embodiment of the disclosure.
Fig. 5 is the structural representation of the LLC transformers of an embodiment of the disclosure.
Fig. 6 is the structural representation of the LLC transformers of an embodiment of the disclosure.
Fig. 7 is the structural representation of the LLC transformers of an embodiment of the disclosure.
Fig. 8 is the flow chart of the method for the leakage inductance of the regulation LLC transformers of an embodiment of the disclosure.
Embodiment
Example embodiment is described more fully with referring now to accompanying drawing.However, example embodiment can be with a variety of shapes
Formula is implemented, and is not understood as limited to embodiment set forth herein；On the contrary, these embodiments are provided so that the disclosure will
Fully and completely, and by the design of example embodiment comprehensively it is communicated to those skilled in the art.Identical accompanying drawing in figure
Mark represents same or similar structure, thus will omit their detailed description.
" constant " in the disclosure can have certain deviation, not definitely constant, can there is 5% deviation；More preferably, may be used
There is 10% deviation；More preferably, there can be 20% deviation.
Explosive view referring to Figure 1A and Figure 1B, Figure 1A for the LLC transformers of an embodiment of the disclosure, Figure 1B is Figure 1A institutes
The combination diagram for the LLC transformers stated.As illustrated in figures 1A and ib, the LLC transformers of the disclosure include skeleton 11, skeleton 11
Including accommodation space 111, Internal baffle 112, the first side shield 113 and the second side shield 114, the first side shield 113 and Internal baffle
The first winding area 115 is formed between 112, the second winding area 116 is formed between the second side shield 114 and Internal baffle 112, it is former
Side winding P is set around the first winding area 115, and vice-side winding S is set around the second winding area 116, and LLC transformers also include magnetic
Core assembly 12, core assembly 12 include wrapping post 121, and wrapping post 121 is arranged in accommodation space 111, and is wrapped on wrapping post 121
The air gap 1211 that a length is d is included, the length between the center line of air gap 1211 and the center line of core assembly 12 is L, and L is big
In zero.So, it is only necessary to skeleton 11, primary side winding P, the core assembly of vice-side winding S and air gap 1211 as characterized above
12 can be achieved the LLC transformers with certain leakage inductance value.The disclosure, between magnetic core and magnetic core formed air gap 1211, magnetic core by
Magnetic core mould and it is machined into, it has 0.05mm high manufacturing accuracy, therefore the leakage inductance value of the LLC transformers of the disclosure can
Homogeneity of product is also higher when with precisely controlled, and not needing substantial amounts of manual operation, therefore producing in batches.
Further, as shown in Figure 1A and 1B, core assembly 12 includes the first E shapes magnetic core 122, the 2nd E shapes magnetic core 123 and
Magnetic pole 124, the center pillar of the first E shapes magnetic core 122, the center pillar of the 2nd E shapes magnetic core 123 and magnetic pole 124 form wrapping post 121, air gap
1211 between the center pillar of the first E shapes magnetic core 122 and magnetic pole 124.In the present embodiment, the first E shapes magnetic core 122 and the 2nd E
Shape magnetic core 123 is symmetrical arranged, and the length of the center pillar of the first E shapes magnetic core 122 is less than the length of the side column of the first E shapes magnetic core 122,
So as to air gap 1211 is formed between the center pillar and magnetic pole 124 of the first E shapes magnetic core 122, and the first E shapes magnetic core 122 after combination
The side column equal length of center pillar, the total length of magnetic pole 124 and air gap 1211 and the first E shapes magnetic core 122, in this way, the first E shape magnetic cores
122 and the 2nd Stability Analysis of Structures of core assembly 12 for synthesizing jointly of E shapes magnetic core 123.Certainly, in other embodiments, the first E shape magnetic
The E shapes magnetic core 123 of core 122 and the 2nd asymmetric can also be set, the center pillar of the first E shapes magnetic core 122, magnetic pole 124 and air gap 1211
The side column length of total length and the first E shapes magnetic core 122 also can be unequal, does not limit herein.
In the present embodiment, by adjusting the center line of the center pillar of magnetic core 122 and the length adjustment air gap 1211 of magnetic pole 124
The distance between the center line of core assembly 12 L and air gap 1211 length d, adjusted with this between air gap 1211 and winding
Relative position, change the coefficient of coup between former and deputy side winding, so as to adjust the size of the leakage inductance amount by air gap 1211,
Thus the LLC transformers of different leakage inductance values are obtained, and keep the magnetizing inductance of LLC transformers constant.Fig. 2 is refer to, Fig. 2 is this
The structural representation of the LLC transformers of one embodiment is disclosed.LLC transformers as described in Figure 2 and the LLC transformers shown in Figure 1B
Compare, the length of magnetic pole 124 is changed into H2, wherein H1 from H1>H2, while the length increase of the center pillar of magnetic pole 122, keep excitation electricity
Feel constant, length d is basically unchanged.Then the center line of air gap 1211 diminishes with the distance between the center line of core assembly 12 L, gas
Gap diminishes closer to vice-side winding, the former secondary coefficient of coup, and leakage inductance value becomes big.Conversely, the length such as magnetic pole 124 becomes greatly, and
The length of the center pillar of first E shapes magnetic core 122 diminishes, so that between the center line of the center line of air gap 1211 and core assembly 12
Distance L becomes big, therefore is diminished by the leakage magnetic flux of air gap 1211, and thus leakage inductance value diminishes.Therefore, the LLC transformers of the disclosure
Can be by adjusting the length of magnetic pole 124 while adjusting the leakage of the length adjustment LLC transformers of the center pillar of the first E shapes magnetic core 122
Inductance value, therefore meet the needs of LLC converters are to different leakage inductance values, and keep magnetizing inductance constant, and the LLC transformations of the disclosure
For device by adjusting the length adjustment leakage inductance of magnetic core, precision is higher, saves a large amount of artificial, and homogeneity of product is higher.
Certainly, the core assembly of the disclosure can also be made up of other shapes of magnetic core.Fig. 3 is refer to, Fig. 3 is the disclosure
The structural representation of the LLC transformers of one embodiment.The core assembly 32 of LLC transformers as shown in Figure 3 includes the first U-shaped magnetic
Core 322, the second U-shaped magnetic core 323 and magnetic pole 324, the first side column of the first U-shaped magnetic core 322, the first side of the second U-shaped magnetic core 323
Post and magnetic pole 324 form wrapping post 321, and air gap 3211 is located between the first side column and the magnetic pole 324 of the first U-shaped magnetic core 322.
In the present embodiment, the first U-shaped magnetic core 322 and the second U-shaped magnetic core 323 are symmetrical arranged, and the first side column of the first U-shaped magnetic core 322
Length be less than the first U-shaped magnetic core 322 the second side column length.Certainly in other embodiments, the He of the first U-shaped magnetic core 322
Second U-shaped magnetic core 323 asymmetric can also be set, and not limited herein.
In the present embodiment, by adjusting the length of magnetic pole 324 while adjusting the first side column of the first U-shaped magnetic core 322
Length can adjust the length d of the distance between the center line of air gap 3211 and the center line of core assembly 32 L and air gap 1211,
It is hereby achieved that different leakage inductance values, thus meet the needs of LLC converters are to different leakage inductance values, and keep magnetizing inductance not
Become.
Fig. 4 is refer to, if Fig. 4 is the schematic diagram of the LLC transformers of the embodiment of the disclosure one.LLC transformations as shown in Figure 4
The core assembly 42 of device includes U-shaped magnetic core 422, E shapes magnetic core 423 and magnetic pole 424, the center pillar and the structure of magnetic pole 424 of E shapes magnetic core 423
Into wrapping post 421, air gap 4211 is between U-shaped magnetic core 422 and magnetic pole 424.
In the present embodiment, the center line and core assembly of air gap 4211 can be adjusted by adjusting the length of magnetic pole 424
The distance between 42 center line L and air gap 1211 length d, it can thus be concluded that to different leakage inductance values, thus meet that LLC is converted
Device keeps magnetizing inductance constant the demands of different leakage inductance values.
Fig. 5 is refer to, if Fig. 5 is the structural representation of the LLC transformers of the embodiment of the disclosure one.LLC as described in Figure 5
The core assembly 52 of transformer includes U magnetic cores 522, ┌ shapes magnetic core 523 and magnetic pole 524, the side column and magnetic of U-shaped magnetic core 522
Post 524 forms wrapping post 521, and air gap 5211 is located between yoke portion and the magnetic pole 524 of ┌ shapes magnetic core 523.
In the present embodiment, the center line and core assembly of air gap 5211 can be adjusted by adjusting the length of magnetic pole 524
The distance between 52 center line L and air gap 1211 length d, it can thus be concluded that to different leakage inductance values, thus meet that LLC is converted
Device keeps magnetizing inductance constant the demands of different leakage inductance values.
Fig. 6 is refer to, if Fig. 6 is the structural representation of the LLC transformers of the embodiment of the disclosure one.LLC as described in Figure 6
The core assembly 62 of transformer includes the first E shapes magnetic core 622 and the 2nd E shapes magnetic core 623, and wrapping post 621 includes the first wrapping post
With the second wrapping post, in the present embodiment, the center pillar of the first E shapes magnetic core 622 is the first wrapping post, in the 2nd E shapes magnetic core 623
Post is the second wrapping post, and air gap 6211 is between the center pillar of the first E shapes magnetic core 622 and the center pillar of the 2nd E shapes magnetic core 623.
In the present embodiment, the length of the center pillar of the first E shapes magnetic core 622 is more than the middle column length of the 2nd E shapes magnetic core 623, passes through regulation the
The length of the length of the center pillar of one E shapes magnetic core 622 and the center pillar of the 2nd E shapes magnetic core 623 with adjust the center line of air gap 6211 with
The distance between the center line of core assembly 62 L and air gap 1211 length d, therefore different leakage inductance values is obtained, meet that LLC becomes
Parallel operation keeps magnetizing inductance constant the demands of different leakage inductance values, and the LLC transformers of the disclosure are adjusted by adjusting magnetic core
Leakage inductance, precision is higher, saves largely manually, and homogeneity of product is higher.
Fig. 7 is refer to, if Fig. 7 is the structural representation of the LLC transformers of the embodiment of the disclosure one.LLC as described in Figure 7
The core assembly 72 of transformer includes the first U-shaped magnetic core 722 and the second U-shaped magnetic core 723, and wrapping post 721 includes the first wrapping post
With the second wrapping post, in the present embodiment, a side column of the first U-shaped magnetic core 722 is the first wrapping post, the second U-shaped magnetic core 723
One side column is the second wrapping post, air gap 7211 be located at the first U-shaped magnetic core 722 side column and the second U-shaped magnetic core 723 side column it
Between.In the present embodiment, the length of the side column of the first U-shaped magnetic core 722 is more than the side column length of the second U-shaped magnetic core 723, passes through tune
The length of the length of the side column of the first U-shaped magnetic core 722 and the side column of the second U-shaped magnetic core 723 is saved to adjust the center line of air gap 7211
The distance between the center line of core assembly 72 L and air gap 1211 length d, therefore different leakage inductance values is obtained, meet LLC
Converter keeps magnetizing inductance constant the demands of different leakage inductance values, and the LLC transformers of the disclosure are adjusted by adjusting magnetic core
Leakage inductance is saved, precision is higher, saves largely manually, and homogeneity of product is higher.
LLC transformers as described above can adjust leakage inductance by adjusting the length of the magnetic core on wrapping post, and magnetic core is by magnetic
Core mold and it is machined into, it has a 0.05mm high manufacturing accuracy, therefore the leakage inductance value of the LLC transformers of the disclosure can be with
It is precisely controlled, and substantial amounts of manual operation is not needed, therefore homogeneity of product is also higher during batch production.
In one embodiment of the disclosure, a kind of method of the leakage inductance of regulation LLC transformers is also provided.Fig. 8 is refer to, and please
Refering to the LLC transformers described in Figure 1A and Figure 1B, Fig. 8 is the method for the leakage inductance of the regulation LLC transformers of the embodiment of the disclosure one
Flow chart.As shown in figure 8, the method for the leakage inductance of the regulation LLC transformers of the disclosure comprises the following steps：
S801：Skeleton 11 is provided, skeleton 11 includes accommodation space 111, Internal baffle 112, the first side shield 113 and the second side
Baffle plate 114, the first winding area 115, the second side shield 114 and Internal baffle are formed between the first side shield 113 and Internal baffle 112
The second winding area 116 is formed between 112；
S802：Primary side winding P is provided, primary side winding P is set around the first winding area 115, there is provided vice-side winding S, will
Vice-side winding S is set around the second winding area 116；
S803：Core assembly 12 is provided, core assembly 12 includes wrapping post 121, wrapping post 121 is arranged at into accommodation space
Include the air gap 1211 that a length is d, the center line of air gap 1211 and the center line of core assembly 12 in 111, on wrapping post 121
Between length be L, L is more than zero；And
S804：L and d length is adjusted to adjust the leakage inductance of LLC transformers.
Further, core assembly can be core assembly 12 as described in Figure 1A and Figure 1B, and core assembly 12 includes the
One E shapes magnetic core 122, the 2nd E shapes magnetic core 123 and magnetic pole 124, in the center pillar of the first E shapes magnetic core 122, the 2nd E shapes magnetic core 123
Post and magnetic pole 124 form wrapping post 121, and air gap 1211 is located between center pillar and the magnetic pole 124 of the first E shapes magnetic core 122.Magnetic core group
Part can be core assembly 32 as described in Figure 3, and core assembly 32 includes the first U-shaped magnetic core 322, the second U-shaped magnetic core 323 and magnetic pole
324, the first side column of the first U-shaped magnetic core 322, the first side column of the second U-shaped magnetic core 323 and magnetic pole 324 form wrapping post 321,
Air gap 3211 is located between the first side column and the magnetic pole 324 of the first U-shaped magnetic core 322.Core assembly can be magnetic core as described in Figure 4
Component 42, core assembly 42 include U-shaped magnetic core 422, E shapes magnetic core 423 and magnetic pole 424, the center pillar and magnetic pole 424 of E shapes magnetic core 423
Wrapping post 421 is formed, air gap 4211 is between U-shaped magnetic core 422 and magnetic pole 424.Core assembly can be magnetic core as described in Figure 5
Component 52, core assembly 52 include U-shaped magnetic core 522, ┌ shapes magnetic core 523 and magnetic pole 524, the side column and magnetic pole of U-shaped magnetic core 522
524 form wrapping post 521, and air gap 5211 is located between yoke portion and the magnetic pole 524 of ┌ shapes magnetic core 523.In above-described embodiment around
Terminal includes a magnetic pole, and regulation L and d length further comprises the length of regulation magnetic pole to adjust L and d length.With
In the embodiment of the disclosure one, shown in reference picture 1A and Figure 1B, regulation L and d length further may also include while adjust the first E
The length of the center pillar of shape magnetic core 122 keeps magnetizing inductance constant to adjust leakage inductance size.With in the embodiment of the disclosure one, joining
According to shown in Fig. 3, regulation L and d length further may also include while adjust the length of the first side column of the first U-shaped magnetic core 322
To adjust leakage inductance size, and keep magnetizing inductance constant.
Further, core assembly can be core assembly 62 as described in Figure 6, and core assembly 62 includes the first E shape magnetic
Core 622, the 2nd E shapes magnetic core 623, wrapping post 621 include the first wrapping post and the second wrapping post, in the present embodiment, the first E shapes
The center pillar of magnetic core 622 is the first wrapping post, and the center pillar of the 2nd E shapes magnetic core 623 is the second wrapping post, and air gap 6211 is located at the first E
Between the center pillar of the center pillar of shape magnetic core 623 and the 2nd E shapes magnetic core 623, the length of the center pillar of the first E shapes magnetic core 622 is more than the 2nd E
The length of the center pillar of shape magnetic core 623.In above-described embodiment, regulation L and d length further comprises while adjusts the first E shapes
The length of the center pillar of the length of the center pillar of magnetic core 622 and the 2nd E shapes magnetic core 623 keeps magnetizing inductance to adjust leakage inductance size
It is constant.
Core assembly can be core assembly 72 as described in Figure 7, and core assembly 72 includes the first U-shaped magnetic core 722, the 2nd U
Shape magnetic core 723, wrapping post 721 include the first wrapping post and the second wrapping post, in the present embodiment, the one of the first U-shaped magnetic core 722
Side column is the first wrapping post, and a side column of the second U-shaped magnetic core 723 is the second wrapping post, and air gap 7211 is located at the first U-shaped magnetic core
Between the side column of 722 side column and the second U-shaped magnetic core 723, the length of the side column of the first U-shaped magnetic core 722 is more than the second U-shaped magnetic core
The length of 723 side column.In above-described embodiment, regulation L and d length further comprises while adjusts the first U-shaped magnetic core 722
Side column length and the second U-shaped magnetic core 723 side column length to adjust leakage inductance size, and keep magnetizing inductance constant.
In the present embodiment, skeleton is provided first, then primary side winding and vice-side winding are set around on skeleton, Zhi Houtong
The length d of length L between the center line of magnetic core regulation air gap and the center line of core assembly and air gap is overregulated to adjust gas
Relative position between gap and winding, change the coefficient of coup between former and deputy side winding, so as to adjust the leakage inductance amount by air gap
Size, the LLC transformers of different leakage inductance values are thus obtained, and keep the magnetizing inductance of LLC transformers constant, to meet difference
The demand of LLC converters, and precision is higher, saves largely manually, homogeneity of product is preferable.
In the embodiment of the disclosure one, a kind of core assembly of LLC transformers is also provided.With the LLC shown in Figure 1A and Figure 1B
Exemplified by the core assembly 12 of transformer, the primary side winding P of core assembly 12 and one and a vice-side winding S collectively form LLC transformers,
Core assembly 12 includes wrapping post 121, and the center of air gap 1211, wherein air gap 1211 that a length is d is included on wrapping post 121
Length between line and the center line of core assembly is L, and L is more than zero.Specifically, the core assembly as described in Figure 1A and Figure 1B
12, core assembly 12 includes the first E shapes magnetic core 122, the 2nd E shapes magnetic core 123 and magnetic pole 124, in the first E shapes magnetic core 122
Post, the center pillar of the 2nd E shapes magnetic core 123 and magnetic pole 124 form wrapping post 121, and air gap 1211 is located in the first E shapes magnetic core 122
Between post and magnetic pole 124.In the present embodiment, the first E shapes magnetic core 122 and the 2nd E shapes magnetic core 123 are symmetrical arranged, and the first E shapes
The length of the center pillar of magnetic core 122 be less than the first E shapes magnetic core 122 side column length so that the center pillar of the first E shapes magnetic core 122 with
Air gap 1211 is formed between magnetic pole 124, and the center pillar of the first E shapes magnetic core 122 after combining, magnetic pole 124 and air gap 1211 it is total
Length and the side column equal length of the first E shapes magnetic core 122, in this way, the first E shapes magnetic core 122 closes jointly with the 2nd E shapes magnetic core 123
Into the Stability Analysis of Structures of core assembly 12.Certainly, in other embodiments, the first E shapes magnetic core 122 and the 2nd E shapes magnetic core 123 also may be used
Asymmetry is set, the side of the center pillar of the first E shapes magnetic core 122, the total length of magnetic pole 124 and air gap 1211 and the first E shapes magnetic core 122
Column length also can be unequal, does not limit herein.Core assembly can be core assembly 32 as described in Figure 3, and core assembly 32 wraps
Include the first U-shaped magnetic core 322, the second U-shaped magnetic core 323 and magnetic pole 324, the first side column of the first U-shaped magnetic core 322, the second U-shaped magnetic core
323 the first side column and magnetic pole 324 forms wrapping post 321, and air gap 3211 is located at the first side column and magnetic of the first U-shaped magnetic core 322
Between post 324.In the present embodiment, the first U-shaped magnetic core 322 and the second U-shaped magnetic core 323 are symmetrical arranged, and the first U-shaped magnetic core
The length of 322 the first side column is less than the length of the second side column of the first U-shaped magnetic core 322.Certainly in other embodiments, first
The U-shaped magnetic core 323 of U-shaped magnetic core 322 and second asymmetric can also be set, and not limited herein.Core assembly can be as described in Figure 4
Core assembly 42, core assembly 42 include U-shaped magnetic core 422, E shapes magnetic core 423 and magnetic pole 424, the center pillar and magnetic of E shapes magnetic core 423
Post 424 forms wrapping post 421, and air gap 4211 is between U-shaped magnetic core 422 and magnetic pole 424.Core assembly can be as described in Figure 5
Core assembly 52, core assembly 52 includes U-shaped magnetic core 522, ┌ shapes magnetic core 523 and magnetic pole 524, a side column of U-shaped magnetic core 522
And magnetic pole 524 forms wrapping post 521, air gap 5211 is located between yoke portion and the magnetic pole 524 of ┌ shapes magnetic core 523.Core assembly can
For core assembly 62 as described in Figure 6, core assembly 62 includes the first E shapes magnetic core 622 and the 2nd E shapes magnetic core 623, the first E shapes
The center pillar of the center pillar of magnetic core 622 and the 2nd E shapes magnetic core 623 forms wrapping post 621, and air gap 6211 is located at the first E shapes magnetic core 623
Between the center pillar of center pillar and the 2nd E shapes magnetic core 623, the length of the center pillar of the first E shapes magnetic core 622 is more than the 2nd E shapes magnetic core 623
The length of center pillar.Core assembly can be core assembly 72 as described in Figure 7, and core assembly 72 includes the first U-shaped magnetic core 722 and the
The side column of two U-shaped magnetic cores 723, a side column of the first U-shaped magnetic core 722 and the second U-shaped magnetic core 723 forms wrapping post 721, air gap
2711 between the side column of the first U-shaped magnetic core 722 and the side column of the second U-shaped magnetic core 723, and the side column of the first U-shaped magnetic core 722
Length be more than the second U-shaped magnetic core 723 side column length.
In the present embodiment, the wrapping post of core assembly includes the air gap that a length is d, and the center line and magnetic core of air gap
Length between the center line of component is L, the center line and magnetic of the i.e. adjustable air gap of the length by adjusting magnetic core on wrapping post
The length d of length L and air gap between the center line of core assembly, and precision is higher, save it is a large amount of artificial, homogeneity of product compared with
It is good.
In summary, by adjusting the center line of the i.e. adjustable air gap of the magnetic core on wrapping post and the center line of core assembly
Between length L and air gap length d, and then the LLC transformers of different leakage inductance values are obtained, to meet different LLC converters
Demand, and keep magnetizing inductance constant, and magnetic core by magnetic core mould and is machined into, it has 0.05mm high processing essence
Degree, therefore the leakage inductance value of the LLC transformers of the disclosure can be with precisely controlled, and substantial amounts of manual operation is not needed, therefore
Homogeneity of product is also higher during batch production.
Although exemplary embodiment describing the disclosure with reference to several, it is to be understood that, term used is explanation and shown
Example property and nonrestrictive term.Because the disclosure can be embodied without departing from the spiritual or real of invention in a variety of forms
Matter, it should therefore be appreciated that above-described embodiment is not limited to any foregoing details, and should be in the spirit that appended claims are limited
With widely explained in scope, therefore the whole changes fallen into claim or its equivalent scope and remodeling all should be the power of enclosing
Profit requires to be covered.
Claims (23)
- A kind of 1. LLC transformers, it is characterised in that including：One skeleton, including an accommodation space, an Internal baffle, one first side shield and one second side shield, first side shield The first winding area is formed between the Internal baffle, the second winding region is formed between second side shield and the Internal baffle Domain；One primary side winding, it is set around in first winding area；One vice-side winding, it is set around in second winding area；AndOne core assembly, including a wrapping post, the wrapping post are arranged in the accommodation space, and are included on the wrapping post One length is d air gap, and the length between the center line of the air gap and the center line of the core assembly is L, and L is more than zero.
- 2. LLC transformers as claimed in claim 1, it is characterised in that the wrapping post includes a magnetic pole, by described in regulation The length adjustment L length and d length of magnetic pole.
- 3. LLC transformers as claimed in claim 2, it is characterised in that the core assembly includes one the oneth E shapes magnetic core, one 2nd E shapes magnetic core and the magnetic pole, the center pillar of the first E shape magnetic cores, the center pillar of the 2nd E shape magnetic cores and the magnetic pole structure Into the wrapping post, the air gap is located between center pillar and the magnetic pole of the first E shape magnetic cores, and adjusts described simultaneously The length adjustment L length and d length of the center pillar of one E shape magnetic cores.
- 4. LLC transformers as claimed in claim 2, it is characterised in that the core assembly includes a U-shaped magnetic core, an E shape magnetic Core and the magnetic pole, the center pillar of the E shapes magnetic core and the magnetic pole form the wrapping post, and the air gap is located at the U-shaped Between magnetic core and the magnetic pole.
- 5. LLC transformers as claimed in claim 2, it is characterised in that the core assembly includes one first U-shaped magnetic core, one Second U-shaped magnetic core and the magnetic pole, a side column of the first U-shaped magnetic core, a side column of the second U-shaped magnetic core and the magnetic Post forms the wrapping post, and the air gap is located between the side column and the magnetic pole of the first U-shaped magnetic core, and adjusts simultaneously Save the length adjustment L length and d length of the side column of the first U-shaped magnetic core.
- 6. LLC transformers as claimed in claim 2, it is characterised in that the core assembly includes a ┌ shapes magnetic core, a U-shaped Magnetic core and the magnetic pole, a side column of the U-shaped magnetic core and the magnetic pole form the wrapping post, and the air gap is positioned at described Between the yoke portion of ┌ shape magnetic cores and the magnetic pole.
- 7. LLC transformers as claimed in claim 1, it is characterised in that the wrapping post includes one first wrapping post and one the Two wrapping posts, the air gap is between first wrapping post and second wrapping post, the length of first wrapping post More than the length of second wrapping post, by adjusting first wrapping post and the length adjustment L's of second wrapping post The length of length and d.
- 8. LLC transformers as claimed in claim 7, it is characterised in that the core assembly includes one the oneth E shapes magnetic core and one 2nd E shape magnetic cores, first wrapping post are the center pillar of the first E shape magnetic cores, and second wrapping post is the 2nd E shapes The center pillar of magnetic core.
- 9. LLC transformers as claimed in claim 7, it is characterised in that the core assembly includes one first U-shaped magnetic core and one Second U-shaped magnetic core, first wrapping post are a side column of the first U-shaped magnetic core, and second wrapping post is the 2nd U One side column of shape magnetic core.
- A kind of 10. method of the leakage inductance of regulation LLC transformers, it is characterised in that including：A skeleton is provided, the skeleton includes an accommodation space, an Internal baffle, one first side shield and one second side shield, institute State and the first winding area is formed between the first side shield and Internal baffle, is formed between second side shield and the Internal baffle Two winding areas；One primary side winding is provided, is set around first winding area, there is provided a vice-side winding, is set around second winding region Domain；One core assembly, including a wrapping post are provided, the wrapping post is arranged in the accommodation space, and the wrapping post Upper to include the air gap that a length is d, the length between the center line of the air gap and the center line of the core assembly is L, and L is big In zero；AndL and d length is adjusted to adjust the leakage inductance of LLC transformers.
- 11. the method for the leakage inductance of regulation LLC transformers as claimed in claim 10, it is characterised in that the wrapping post includes One magnetic pole, length of the L and d length also including the regulation magnetic pole is adjusted to adjust L and d length.
- 12. the method for the leakage inductance of regulation LLC transformers as claimed in claim 11, it is characterised in that the core assembly bag Include one the oneth E magnetic cores, one the 2nd E shapes magnetic core and the magnetic pole, the center pillars of the first E shape magnetic cores, the 2nd E shape magnetic cores Center pillar and the magnetic pole form the wrapping post, and the air gap is located between center pillar and the magnetic pole of the first E shape magnetic cores.
- 13. the method for the leakage inductance of regulation LLC transformers as claimed in claim 12, it is characterised in that regulation L and d length Also include adjusting the length of the center pillar of the first E shape magnetic cores to adjust L and d length.
- 14. the method for the leakage inductance of regulation LLC transformers as claimed in claim 11, it is characterised in that the core assembly bag A U-shaped magnetic core, an E shapes magnetic core and the magnetic pole are included, the center pillar of the E shapes magnetic core and the magnetic pole form the wrapping post, and The air gap is between the U-shaped magnetic core and the magnetic pole.
- 15. the method for the leakage inductance of regulation LLC transformers as claimed in claim 11, it is characterised in that the core assembly bag Include one the oneth U magnetic cores, one second U-shaped magnetic core and the magnetic pole, a side column of the first U-shaped magnetic core, the second U-shaped magnetic core A side column and the magnetic pole form the wrapping post, the air gap be located at the side column of the first U-shaped magnetic core with it is described Between magnetic pole.
- 16. the method for the leakage inductance of regulation LLC transformers as claimed in claim 15, it is characterised in that regulation L and d length Also include adjusting the length of the side column of the first U-shaped magnetic core to adjust L and d length.
- 17. the method for the leakage inductance of regulation LLC transformers as claimed in claim 11, it is characterised in that the core assembly bag A ┌ shapes magnetic core, a U-shaped magnetic core and the magnetic pole are included, a side column of the U-shaped magnetic core and the magnetic pole form the wrapping post, And the air gap is located between yoke portion and the magnetic pole of the ┌ shapes magnetic core.
- 18. the method for the leakage inductance of regulation LLC transformers as claimed in claim 10, it is characterised in that the wrapping post includes One first wrapping post and one second wrapping post, the air gap is between first wrapping post and second wrapping post, institute State the first wrapping post length be more than second wrapping post length, adjust L and d length also include regulation described first around The length of terminal and second wrapping post.
- 19. a kind of core assembly applied to LLC transformers as claimed in claim 1, the core assembly and a primary side around Group and a vice-side winding collectively form the LLC transformers, it is characterised in that the core assembly includes a wrapping post, and institute The air gap for including that a length is d on wrapping post is stated, wherein between the center line of the center line of the air gap and the core assembly Length be L, L is more than zero.
- 20. core assembly as claimed in claim 19, it is characterised in that the core assembly includes one the oneth E shapes magnetic core, one 2nd E shapes magnetic core and a magnetic pole, the center pillar of the first E shape magnetic cores, the center pillar of the 2nd E shape magnetic cores and the magnetic pole are formed The wrapping post, and the air gap is located between center pillar and the magnetic pole of the first E shape magnetic cores.
- 21. core assembly as claimed in claim 19, it is characterised in that the core assembly includes a U-shaped magnetic core, an E shapes Magnetic core and a magnetic pole, the center pillar of the E shapes magnetic core and the magnetic pole form the wrapping post, and the air gap is located at the U-shaped Between magnetic core and the magnetic pole.
- 22. core assembly as claimed in claim 19, it is characterised in that the core assembly includes one first U-shaped magnetic core, one Second U-shaped magnetic core and a magnetic pole, a side column of the first U-shaped magnetic core, a side column of the second U-shaped magnetic core and the magnetic pole The wrapping post is formed, and the air gap is located between the side column and the magnetic pole of the first U-shaped magnetic core.
- 23. core assembly as claimed in claim 19, it is characterised in that the core assembly includes a ┌ shapes magnetic core, a U-shaped Magnetic core and a magnetic pole, a side column of the U-shaped magnetic core and the magnetic pole form the wrapping post, and the air gap is located at the ┌ Between the yoke portion of shape magnetic core and the magnetic pole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710763423.2A CN107633936A (en) | 2017-08-30 | 2017-08-30 | LLC transformers and its implementation and core assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710763423.2A CN107633936A (en) | 2017-08-30 | 2017-08-30 | LLC transformers and its implementation and core assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107633936A true CN107633936A (en) | 2018-01-26 |
Family
ID=61100868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710763423.2A Pending CN107633936A (en) | 2017-08-30 | 2017-08-30 | LLC transformers and its implementation and core assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107633936A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109411223A (en) * | 2018-11-15 | 2019-03-01 | 宁夏银利电气股份有限公司 | A kind of production method of high frequency transformer |
| CN112563000A (en) * | 2021-03-01 | 2021-03-26 | 杭州富特科技股份有限公司 | Integrated magnetic element device and converter |
| CN113012908A (en) * | 2021-03-01 | 2021-06-22 | 杭州富特科技股份有限公司 | Integrated magnetic element and integrated magnetic element system based on power equipment |
| TWI824841B (en) * | 2022-11-23 | 2023-12-01 | 光寶科技股份有限公司 | Magnetic device and llc series resonant converter having the same |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3947794A (en) * | 1972-12-11 | 1976-03-30 | U.S. Philips Corporation | Magnetic core assemblies with adjustable reluctance as a function of temperature |
| CN1637967A (en) * | 2003-12-25 | 2005-07-13 | Tdk株式会社 | Transformer device and magnetic core structural body for transformer and producing method thereof |
| JP2006324696A (en) * | 2006-08-16 | 2006-11-30 | Sony Corp | Worldwide current resonant converter |
| CN101894660A (en) * | 2009-05-19 | 2010-11-24 | 台达电子工业股份有限公司 | Transformer structure |
| CN203026307U (en) * | 2012-09-27 | 2013-06-26 | 江苏锴博材料科技有限公司 | Variable inductance value inductance iron core |
| CN106057401A (en) * | 2015-04-10 | 2016-10-26 | 台达电子工业股份有限公司 | Magnetic element and magnetic core thereof |
| CN205789423U (en) * | 2016-05-25 | 2016-12-07 | 无锡金一诺电气有限公司 | Magnetic core of transformer |
-
2017
- 2017-08-30 CN CN201710763423.2A patent/CN107633936A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3947794A (en) * | 1972-12-11 | 1976-03-30 | U.S. Philips Corporation | Magnetic core assemblies with adjustable reluctance as a function of temperature |
| CN1637967A (en) * | 2003-12-25 | 2005-07-13 | Tdk株式会社 | Transformer device and magnetic core structural body for transformer and producing method thereof |
| JP2006324696A (en) * | 2006-08-16 | 2006-11-30 | Sony Corp | Worldwide current resonant converter |
| CN101894660A (en) * | 2009-05-19 | 2010-11-24 | 台达电子工业股份有限公司 | Transformer structure |
| CN203026307U (en) * | 2012-09-27 | 2013-06-26 | 江苏锴博材料科技有限公司 | Variable inductance value inductance iron core |
| CN106057401A (en) * | 2015-04-10 | 2016-10-26 | 台达电子工业股份有限公司 | Magnetic element and magnetic core thereof |
| CN205789423U (en) * | 2016-05-25 | 2016-12-07 | 无锡金一诺电气有限公司 | Magnetic core of transformer |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109411223A (en) * | 2018-11-15 | 2019-03-01 | 宁夏银利电气股份有限公司 | A kind of production method of high frequency transformer |
| CN112563000A (en) * | 2021-03-01 | 2021-03-26 | 杭州富特科技股份有限公司 | Integrated magnetic element device and converter |
| CN113012908A (en) * | 2021-03-01 | 2021-06-22 | 杭州富特科技股份有限公司 | Integrated magnetic element and integrated magnetic element system based on power equipment |
| CN113012908B (en) * | 2021-03-01 | 2022-03-29 | 杭州富特科技股份有限公司 | Integrated magnetic element and integrated magnetic element system based on power equipment |
| TWI824841B (en) * | 2022-11-23 | 2023-12-01 | 光寶科技股份有限公司 | Magnetic device and llc series resonant converter having the same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107633936A (en) | LLC transformers and its implementation and core assembly | |
| US11870359B2 (en) | Transformer and bidirectional isolated resonant converter | |
| CN105513756A (en) | Foldable three-dimensional double-opening iron core oil-immersed transformer | |
| CN111883351A (en) | Magnetic core structure based on multi-resonance converter | |
| CN201549350U (en) | Laminated iron core magnetic shunt compensating device of current transformer | |
| CN111740506B (en) | Design method of three-coil wireless power transmission system with stable voltage gain | |
| WO2021104424A1 (en) | Ltcc high-voltage transformer | |
| CN104810138A (en) | Reactor | |
| CN205847548U (en) | T ferrum, magnetic circuit assembly and supersound projector | |
| JP2008072114A (en) | Method for adjusting mutual inductance and transformer adjusted by the same method | |
| CN114337294B (en) | Design method and device of magnetic integrated converter of LLC topological structure | |
| CN115081281A (en) | Method for estimating size of wireless charging planar coil with magnetic core | |
| CN101170007B (en) | Method for adjusting mutual induction effect | |
| CN113744973A (en) | Loose coupling transformer structure applied to WPT system and LCC-S compensation method thereof | |
| CN112886821A (en) | Magnetic integrated structure suitable for CLTLC converter | |
| CN106526302A (en) | Method for manufacturing high-performance air-core coil with balanced turns | |
| CN206236521U (en) | High frequency transformer | |
| CN201054296Y (en) | Transformer magnetic core and its induction leakage adjustable transformer | |
| CN209374255U (en) | The asymmetric core transformers of SMX low-loss | |
| CN115579219B (en) | Variable inductance reactor and preparation method thereof | |
| CN211907185U (en) | Two-path magnetic integrated inductor with high balance rate | |
| KR20200049235A (en) | Multiple winding High Voltage Isolated Transformer | |
| CN209461257U (en) | A kind of flux densities structures such as three-dimensional folded iron core yoke column | |
| CN116798753A (en) | Transformer, power circuit and power adapter | |
| US20230368968A1 (en) | Transformer with integrated inductor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180126 |
|
| RJ01 | Rejection of invention patent application after publication |