TW201501141A - Transformer structure with adjustable leakage inductance - Google Patents
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本發明是有關於一種變壓器結構，且特別是一種可調漏感之變壓器結構。
The present invention relates to a transformer structure, and more particularly to a transformer structure with adjustable leakage inductance.
變壓器是一種利用磁芯與初級繞組及次級繞組產生電磁耦合感應，藉此達到轉換電壓目的之電子元件。一般變壓器其初級繞組與次級繞組通常無法完全耦合，而初級繞組與次級繞組未發生耦合的部分即會存在漏感，該漏感會影響到變壓器的電源轉換效率，故傳統變壓器設計常致力於降低變壓器的漏感。現有的切換式電源供應器則開始利用變壓器中不可避免的漏感(Leakage Inductance，L)，配合電容元件(Capacitor，C)構成一LC諧振電路，將該LC諧振電路應用於軟切換設計，來減少開關元件的切換損耗、降低雜訊及提升電源轉換效率。然而，在先前的諸多專利設計中，如中華民國公告號I321797、I297898、公開號201037743、200832460等專利，均並未充分同時考量到漏感可調、組裝效率及散熱等問題。
A transformer is an electronic component that utilizes a magnetic core to generate electromagnetic coupling with a primary winding and a secondary winding to achieve a switching voltage. In general, the primary winding and the secondary winding of the transformer are usually not fully coupled, and the part where the primary winding and the secondary winding are not coupled will have a leakage inductance, which will affect the power conversion efficiency of the transformer, so the conventional transformer design is often dedicated. To reduce the leakage inductance of the transformer. The existing switching power supply device starts to utilize the inevitable leakage inductance (Lakage Inductance, L) in the transformer, and the capacitive component (Capacitor, C) constitutes an LC resonant circuit, and the LC resonant circuit is applied to the soft switching design. Reduce switching loss of switching components, reduce noise and improve power conversion efficiency. However, in many previous patent designs, such as the Republic of China Bulletin No. I321797, I297898, Publication No. 201037743, 200832460 and other patents, the problems of adjustable leakage inductance, assembly efficiency and heat dissipation have not been fully considered.
本發明的目的就是在提出一種變壓器結構，其漏感可調、容易組裝及容易散熱。
為了達成上述目的及其它目的，本發明提出一種可調漏感之變壓器結構，其包括一繞線架、一初級繞組、兩次級繞組、複數可選的磁性環片以及一磁芯組。該繞線架具有貫穿的一通孔及一環繞該通孔設置的繞線槽，該繞線槽內設置有至少一隔板以形成複數溝槽。該初級繞組纏繞於該複數溝槽中至少一溝槽內。各該次級繞組為平面式繞組且具有一中空主體，該中空主體具有一中空孔洞，該兩次級繞組分別設置於該繞線槽兩側且各該中空孔洞對應該繞線架的該通孔。各該磁性環片具有一中空通孔，該複數磁性環片分別設置於該繞線槽兩側且各該中空通孔對應該繞線架的該通孔。該磁芯組具有一磁軸，該磁軸穿設於該繞線架的該通孔、該兩次級繞組的中空孔洞及該複數可選的磁性環片的中空通孔。
在一實施例中，各該次級繞組可為一電路板導線所構成的平面式繞組。在另一實施例中，各該次級繞組可為一導電片所構成的平面式繞組。
在一實施例中，各該次級繞組還具有兩延伸部，該兩延伸部分別與該中空主體之兩端連接。該延伸部可與一電子元件、散熱器或電路板連接。
在一實施例中，該變壓器結構還可包括一連接元件，該兩次級繞組各自的一延伸部通過該連接元件連接。該連接元件可為一電路板導線或導電片。
在一實施例中，該變壓器結構更包括另兩次級繞組以及兩電路板。該另兩次級繞組各為平面式繞組且具有一中空主體，該中空主體具有一中空孔洞。各該電路板具有一與該中空孔洞對應的中空穿孔，該兩電路板分別設置於該繞線槽兩側且各該中空穿孔對應該繞線架的該通孔。該兩次級繞組分別設置於該兩電路板的一側，該另兩次級繞組分別設置於該兩電路板的另一側。
本發明因採用變壓器的漏感來作為諧振電路中的諧振電感，故可提高空間利用率及降低成本，而且該初級繞組及該兩次級繞組採用三明治繞法，藉此降低磁場強度，同時因該兩次級繞組設置於變壓器結構中除該磁芯組外的最外側，讓該兩次級繞組更容易散熱，也更容易安裝，此外可通過該初級繞組纏繞於該複數溝槽中的溝槽位置及/或將該複數磁性環片分別設置於該繞線槽兩側，以達到調整漏感的目的。
為讓本發明之上述和其他目的、特徵和優點能更明顯易懂，下文特舉較佳實施例，並配合所附圖式，作詳細說明如下。
The object of the present invention is to provide a transformer structure with adjustable leakage inductance, easy assembly and easy heat dissipation.
In order to achieve the above and other objects, the present invention provides an adjustable leakage inductance transformer structure including a bobbin, a primary winding, a secondary winding, a plurality of optional magnetic ring segments, and a magnetic core group. The bobbin has a through hole penetrating therethrough and a winding groove disposed around the through hole. The winding groove is provided with at least one partition to form a plurality of grooves. The primary winding is wound in at least one of the plurality of trenches. Each of the secondary windings is a planar winding and has a hollow body, the hollow body has a hollow hole, and the two-stage windings are respectively disposed on two sides of the winding groove, and each of the hollow holes corresponds to the wire winding frame hole. Each of the magnetic ring pieces has a hollow through hole, and the plurality of magnetic ring pieces are respectively disposed on two sides of the winding groove, and each of the hollow through holes corresponds to the through hole of the wire frame. The magnetic core group has a magnetic shaft that passes through the through hole of the bobbin, the hollow hole of the two-stage winding, and the hollow through hole of the plurality of optional magnetic ring pieces.
In one embodiment, each of the secondary windings can be a planar winding of a circuit board conductor. In another embodiment, each of the secondary windings can be a planar winding formed by a conductive sheet.
In an embodiment, each of the secondary windings further has two extensions that are respectively connected to both ends of the hollow body. The extension can be connected to an electronic component, a heat sink or a circuit board.
In an embodiment, the transformer structure may further include a connecting element through which an extension of each of the two stages of windings is connected. The connecting element can be a circuit board wire or a conductive sheet.
In an embodiment, the transformer structure further includes another two stages of windings and two circuit boards. The other two stages of windings are each a planar winding and have a hollow body having a hollow bore. Each of the circuit boards has a hollow through hole corresponding to the hollow hole, and the two circuit boards are respectively disposed on two sides of the winding groove, and each of the hollow holes corresponds to the through hole of the wire frame. The two-stage windings are respectively disposed on one side of the two circuit boards, and the other two-stage windings are respectively disposed on the other side of the two circuit boards.
The invention adopts the leakage inductance of the transformer as the resonant inductance in the resonant circuit, thereby improving space utilization and reducing cost, and the primary winding and the secondary winding adopt a sandwich winding method, thereby reducing the magnetic field strength, and simultaneously The two-stage winding is disposed on the outermost side of the transformer structure except the magnetic core group, so that the two-stage winding is easier to dissipate heat and is easier to install, and the second winding can be wound around the groove in the plurality of trenches. The slot position and/or the plurality of magnetic ring pieces are respectively disposed on both sides of the winding groove to achieve the purpose of adjusting the leakage inductance.
The above and other objects, features and advantages of the present invention will become more <RTIgt;
1‧‧‧變壓器結構
10、10’、10”‧‧‧繞線架
11‧‧‧通孔
12‧‧‧繞線槽
13‧‧‧隔板
14‧‧‧溝槽
15、15’、15”‧‧‧導電接腳
20‧‧‧初級繞組
30、30’、30”‧‧‧次級繞組
31、31’、31”‧‧‧中空主體
32、32’、32”‧‧‧中空孔洞
33、33’、33”‧‧‧延伸部
34’‧‧‧連接元件
40‧‧‧磁性環片
41‧‧‧中空通孔
50‧‧‧磁芯組
51‧‧‧磁軸
60‧‧‧電路板
61‧‧‧中空穿孔
2、3‧‧‧電子元件
4、5‧‧‧電路板
1‧‧‧Transformer structure
10, 10', 10" ‧‧‧ Winding Rack
11‧‧‧through hole
12‧‧‧Rolling groove
13‧‧‧Baffle
14‧‧‧ trench
15, 15', 15" ‧ ‧ conductive feet
20‧‧‧Primary winding
30, 30', 30" ‧ ‧ secondary winding
31, 31', 31" ‧ ‧ hollow body
32, 32', 32" ‧‧‧ hollow holes
33, 33', 33" ‧ ‧ extension
34'‧‧‧Connecting components
40‧‧‧Magnetic ring
41‧‧‧ hollow through hole
50‧‧‧Magnetic core group
51‧‧‧Magnetic axis
60‧‧‧ boards
61‧‧‧ hollow perforation
2, 3‧‧‧ electronic components
4, 5‧‧‧ circuit board
圖1及圖2分別為本發明可調漏感之變壓器結構的第一實施例立體分解圖及組立圖。
圖3及圖4分別為本發明可調漏感之變壓器結構的第二實施例立體分解圖及側視組立圖。
圖5為本發明可調漏感之變壓器結構的第三實施例側視組立圖。
圖6為本發明可調漏感之變壓器結構的第四實施例側視組立圖。
圖7為本發明可調漏感之變壓器結構的第五實施例側視組立圖。
圖8為本發明可調漏感之變壓器結構的第六實施例立體分解圖。
圖9為本發明可調漏感之變壓器結構的第七實施例立體分解圖。
1 and 2 are respectively an exploded perspective view and an assembled view of a first embodiment of a transformer structure with adjustable leakage inductance according to the present invention.
3 and FIG. 4 are respectively an exploded perspective view and a side view of a second embodiment of a transformer structure with adjustable leakage inductance according to the present invention.
FIG. 5 is a side elevational view of a third embodiment of a transformer structure with adjustable leakage inductance according to the present invention.
6 is a side elevational view of a fourth embodiment of a transformer structure with adjustable leakage inductance according to the present invention.
Figure 7 is a side elevational view of a fifth embodiment of a transformer structure with adjustable leakage inductance according to the present invention.
Figure 8 is a perspective exploded view of a sixth embodiment of the transformer structure of the adjustable leakage inductance of the present invention.
Figure 9 is a perspective exploded view of a seventh embodiment of the transformer structure of the adjustable leakage inductance of the present invention.
請同時參見圖1及圖2，圖1及圖2分別為本發明可調漏感之變壓器結構的第一實施例立體分解圖及組立圖。該變壓器結構1包括一繞線架10、一初級繞組20、兩次級繞組30、複數可選的磁性環片40以及一磁芯組50。該繞線架10具有貫穿的一通孔11及一環繞該通孔11設置的繞線槽12，該繞線槽12內設置有至少一隔板13以形成複數溝槽14。該初級繞組20纏繞於該複數溝槽14中至少一溝槽內，且該初級繞組20的兩端分別連接於兩設於該繞線架10上的導電接腳15。各該次級繞組30為平面式繞組且具有一中空主體31，該中空主體31具有一中空孔洞32。該兩次級繞組30分別設置於該繞線槽12兩側且各該中空孔洞32對應該繞線架10的該通孔11。各該磁性環片40具有一中空通孔41，其例如是帶有鐵氧體聚合物複合材料(ferrite polymer composite，FPC)的環片。該複數磁性環片40分別設置於該繞線槽12兩側且各該中空通孔41對應該繞線架10的該通孔11。該磁芯組50具有一磁軸51，該磁軸51穿設於該繞線架10的該通孔11、該兩次級繞組30的中空孔洞32及該複數可選的磁性環片40的中空通孔41。
本發明可利用該變壓器結構1中該初級繞組20上的磁場未與該兩次級繞組30發生耦合的部分所產生的漏感來作為諧振電路中的諧振電感，故無需額外繞製一顆諧振電感，藉此可提高空間利用率及降低成本，而且該初級繞組20及該兩次級繞組30採用三明治繞法，藉此減小變壓器漏感，以提高變壓器的電源轉換效率，同時因該兩次級繞組30設置於變壓器結構1中除該磁芯組50外的最外側，讓該兩次級繞組30更容易散熱，也更容易安裝。此外，本發明可通過該初級繞組20纏繞於該複數溝槽14中的溝槽位置，來調整該初級繞組20及該兩次級繞組30彼此間的距離，以達到調整漏感的目的，而且還可通過將該複數磁性環片40分別設置於該繞線槽12兩側，來調整該初級繞組20及該兩次級繞組30之間的電磁耦合係數，以達到調整漏感的目的。
在本實施例中，各該次級繞組30為一電路板導線所構成的平面式繞組。該電路板導線為採用電子印刷術製作於一電路板60表面上或夾層中，或採用表面黏著技術將導電薄片貼於該電路板60表面上，其中，該電路板60具有一與該中空孔洞32對應的中空穿孔61。各該次級繞組30還可具有兩延伸部33，該兩延伸部33分別與該中空主體31之兩端連接。該次級繞組30的該延伸部33可與一設置於該電路板60上的電子元件2連接，該電子元件2例如是含有功率開關電晶體的晶片、二極體、電容器或電阻器等；但本發明並非僅限於此，例如該延伸部33還可與一設置於該電路板60上的散熱器（圖中未示）連接，該散熱器例如是銅片或散熱鰭片等。
請同時參見圖3及圖4，圖3及圖4分別為本發明可調漏感之變壓器結構的第二實施例立體分解圖及側視組立圖。在本實施例中，各該次級繞組30’為一導電片所構成的平面式繞組，該導電片例如是銅片，其可利於大電流及散熱。各該次級繞組30’具有一中空主體31’，該中空主體31’具有一中空孔洞32’，該兩次級繞組30’分別設置於該繞線槽12兩側且各該中空孔洞32’對應該繞線架10的該通孔11。各該次級繞組30’還具有兩延伸部33’，該兩延伸部33’分別與該中空主體31’之兩端連接。該次級繞組30’的該延伸部33’可與一電子元件3連接，且是與該電子元件3的散熱部連接，藉此該電子元件3可利用該次級繞組30’的該導電片加強其散熱效果；但本發明並非僅限於此，例如該延伸部33’還可直接與一散熱器（圖中未示）連接以加強其散熱效果，該散熱器例如是銅片或散熱鰭片等。
此外，在本實施例中，各該次級繞組30’的該兩延伸部33’均呈L形使得其端部指向-z方向，而該繞線架10的該兩導電接腳15指向-z方向，該兩延伸部33’的端部及該兩導電接腳15指向同一方向，故該兩延伸部33’的端部及該兩導電接腳15均可以卡合方式與同一電路板4連接。但本發明並非僅限於此，請參見圖5，圖5為本發明可調漏感之變壓器結構的第三實施例側視組立圖，各該次級繞組30”的兩延伸部33”均呈直條狀使得其端部指向-x方向，而該繞線架10的該兩導電接腳15指向-z方向，該兩延伸部33”的端部及該兩導電接腳15指向不同方向，故該兩延伸部33”的端部與一電路板5連接而該兩導電接腳15與另一電路板4連接，且該電路板4及該電路板5互相垂直且均垂直紙面。請參見圖6，圖6為本發明可調漏感之變壓器結構的第四實施例側視組立圖，各該次級繞組30”的該兩延伸部33”均呈直條狀使得其端部指向-x方向，而一繞線架10’的兩導電接腳15’指向+y方向，該兩延伸部33”的端部及該兩導電接腳15’指向不同方向，故該兩延伸部33”的端部與一電路板5連接而該兩導電接腳15’與另一電路板4連接，且該電路板4及該電路板5互相垂直且分別平行紙面及垂直紙面。請參見圖7，圖7為本發明可調漏感之變壓器結構的第五實施例側視組立圖，各該次級繞組30”的該兩延伸部33”均呈直條狀使得其端部指向-x方向，而一繞線架10”的兩導電接腳15”指向-x方向，該兩延伸部33”的端部及該兩導電接腳15”指向同一方向，故該兩延伸部33”的端部及該兩導電接腳15”均與同一電路板5連接。
請參見圖8，圖8為本發明可調漏感之變壓器結構的第六實施例立體分解圖。在本實施例中，各該次級繞組30’為一導電片所構成的平面式繞組，該導電片例如是銅片。各該次級繞組30’具有一中空主體31’，該中空主體31’具有一中空孔洞32’，該兩次級繞組30’分別設置於該繞線槽12兩側且各該中空孔洞32’對應該繞線架10的該通孔11。各該次級繞組30’還具有兩延伸部33’，該兩延伸部33’分別與該中空主體31’之兩端連接，且各該延伸部33’可與一電子元件、散熱器或電路板連接。該兩次級繞組30’各自的一延伸部33’通過一連接元件34’連接形成中間抽頭。在本實施例中，該連接元件34’為一導電片，該導電片例如是銅片；但本發明並非僅限於此，若各該次級繞組為一電路板導線所構成的平面式繞組，則該連接元件為一電路板導線。
請參見圖9，圖9為本發明可調漏感之變壓器結構的第七實施例立體分解圖。在本實施例中，該變壓器結構更包括另兩次級繞組30”及兩電路板60。該兩次級繞組30”及該另兩次級繞組30”均採用如圖5所示的次級繞組，各為平面式繞組且具有一中空主體31”，該中空主體31”具有一中空孔洞32”。各該電路板60具有一與該中空孔洞32”對應的中空穿孔61。該兩電路板60分別設置於該繞線槽12兩側且各該中空穿孔61對應該繞線架10的該通孔11。該兩次級繞組30”分別設置於該兩電路板60的一側，故組立後即會分別設置於該繞線槽12兩側且各該中空孔洞32”對應該繞線架10的該通孔11。該另兩次級繞組30”分別設置於該兩電路板的另一側，故組立後即會分別設置於該繞線槽12兩側且各該中空孔洞32”對應該繞線架10的該通孔11。
換句話說，該變壓器結構包括四次級繞組30”，其中兩次級繞組30”分別設置於一電路板60的兩側，另兩次級繞組30”分別設置於另一電路板60的兩側，並藉由電路上的連接使得在交流電輸入的正半週期間同時有電流流過該兩電路板60一側上的次級繞組30”，而在交流電輸入的負半週期間亦同時有電流流過該兩電路板60另一側上的次級繞組30”，藉由電路板60兩側的次級繞組30”共同來分擔負載，便可降低流過各該次級繞組30”的電流量，以減少熱量的產生。各該次級繞組30”為一導電片所構成的平面式繞組，該導電片例如是銅片，且各該次級繞組30”的兩延伸部33”均呈直條狀；但本發明並非僅限於此，例如各該次級繞組的兩延伸部可採用如圖3及圖4所示呈L形的延伸部，又例如各該次級繞組可採用如圖1及圖2所示由電路板導線所構成的平面式繞組。
雖然本發明已以較佳實施例揭露如上，然其並非用以限定本發明，任何熟習此技藝者，在不脫離本發明之精神和範圍內，當可作些許之更動與潤飾，因此本發明之保護範圍當視後附之申請專利範圍所界定者為準。
Please refer to FIG. 1 and FIG. 2 simultaneously. FIG. 1 and FIG. 2 are respectively an exploded perspective view and an assembled view of a first embodiment of a transformer structure with adjustable leakage inductance according to the present invention. The transformer structure 1 includes a bobbin 10, a primary winding 20, a secondary winding 30, a plurality of optional magnetic ring segments 40, and a core assembly 50. The bobbin 10 has a through hole 11 penetrating therethrough and a winding groove 12 disposed around the through hole 11. The winding groove 12 is provided with at least one partition 13 to form a plurality of grooves 14. The primary winding 20 is wound in at least one of the plurality of trenches 14, and the two ends of the primary winding 20 are respectively connected to two conductive pins 15 disposed on the bobbin 10. Each of the secondary windings 30 is a planar winding and has a hollow body 31 having a hollow bore 32. The two-stage windings 30 are respectively disposed on two sides of the winding groove 12 and each of the hollow holes 32 corresponds to the through hole 11 of the bobbin 10. Each of the magnetic ring pieces 40 has a hollow through hole 41 which is, for example, a ring piece with a ferrite polymer composite (FPC). The plurality of magnetic ring pieces 40 are respectively disposed on two sides of the winding groove 12 and each of the hollow through holes 41 corresponds to the through hole 11 of the bobbin 10 . The magnetic core assembly 50 has a magnetic shaft 51 extending through the through hole 11 of the bobbin 10, the hollow hole 32 of the secondary winding 30, and the plurality of optional magnetic ring pieces 40. Hollow through hole 41.
The present invention can utilize the leakage inductance generated by the portion of the transformer structure 1 in which the magnetic field on the primary winding 20 is not coupled with the secondary winding 30 as the resonant inductance in the resonant circuit, so that no additional winding is required. Inductance, thereby improving space utilization and reducing cost, and the primary winding 20 and the secondary winding 30 adopt a sandwich winding method, thereby reducing transformer leakage inductance, thereby improving power conversion efficiency of the transformer, and The secondary winding 30 is disposed on the outermost side of the transformer structure 1 except for the core group 50, making the secondary winding 30 easier to dissipate heat and easier to install. In addition, the present invention can adjust the distance between the primary winding 20 and the secondary winding 30 by adjusting the distance between the primary winding 20 and the secondary winding 30 by the position of the groove wound in the plurality of trenches 14 to achieve the purpose of adjusting the leakage inductance. The electromagnetic coupling coefficient between the primary winding 20 and the secondary winding 30 can also be adjusted by separately arranging the plurality of magnetic ring segments 40 on both sides of the winding groove 12 to achieve the purpose of adjusting the leakage inductance.
In this embodiment, each of the secondary windings 30 is a planar winding formed by a circuit board conductor. The circuit board conductor is fabricated on the surface of the circuit board 60 or in the interlayer by electronic printing, or the conductive sheet is attached to the surface of the circuit board 60 by surface adhesion technology, wherein the circuit board 60 has a hollow hole. 32 corresponding hollow perforations 61. Each of the secondary windings 30 can also have two extending portions 33 that are respectively connected to both ends of the hollow body 31. The extension portion 33 of the secondary winding 30 can be connected to an electronic component 2 disposed on the circuit board 60, such as a wafer, a diode, a capacitor or a resistor, etc., containing a power switching transistor; However, the present invention is not limited thereto. For example, the extension portion 33 may be connected to a heat sink (not shown) disposed on the circuit board 60. The heat sink is, for example, a copper sheet or a heat sink fin.
Please refer to FIG. 3 and FIG. 4 at the same time. FIG. 3 and FIG. 4 are respectively an exploded perspective view and a side view of a second embodiment of the transformer structure with adjustable leakage inductance according to the present invention. In this embodiment, each of the secondary windings 30' is a planar winding formed by a conductive sheet, such as a copper sheet, which can facilitate high current and heat dissipation. Each of the secondary windings 30' has a hollow body 31'. The hollow body 31' has a hollow hole 32'. The two-stage windings 30' are respectively disposed on two sides of the winding groove 12 and each of the hollow holes 32'. This through hole 11 of the bobbin 10 is corresponding. Each of the secondary windings 30' further has two extending portions 33' that are respectively connected to both ends of the hollow body 31'. The extension 33' of the secondary winding 30' can be connected to an electronic component 3 and connected to the heat dissipation portion of the electronic component 3, whereby the electronic component 3 can utilize the conductive sheet of the secondary winding 30'. The heat dissipation effect is enhanced; however, the present invention is not limited thereto. For example, the extension portion 33' may be directly connected to a heat sink (not shown) to enhance the heat dissipation effect, such as a copper sheet or a heat sink fin. Wait.
In addition, in this embodiment, the two extensions 33' of each of the secondary windings 30' are L-shaped such that their ends point in the -z direction, and the two conductive pins 15 of the bobbin 10 point to - In the z direction, the end portions of the two extending portions 33 ′ and the two conductive pins 15 are directed in the same direction, so that the ends of the two extending portions 33 ′ and the two conductive pins 15 can be engaged with the same circuit board 4 . connection. However, the present invention is not limited to this. Referring to FIG. 5, FIG. 5 is a side view assembly diagram of a third embodiment of a transformer structure with adjustable leakage inductance according to the present invention, wherein the two extension portions 33" of each of the secondary windings 30" are The straight strips are oriented such that the ends thereof are directed in the -x direction, and the two conductive pins 15 of the bobbin 10 are directed in the -z direction, and the ends of the two extending portions 33" and the two conductive pins 15 are directed in different directions. Therefore, the ends of the two extending portions 33" are connected to a circuit board 5, and the two conductive pins 15 are connected to the other circuit board 4, and the circuit board 4 and the circuit board 5 are perpendicular to each other and are perpendicular to the paper surface. Referring to FIG. 6, FIG. 6 is a side elevational view of a fourth embodiment of a transformer structure with adjustable leakage inductance according to the present invention, wherein the two extensions 33" of each of the secondary windings 30" are straight such that their ends are Pointing in the -x direction, and the two conductive pins 15' of a bobbin 10' point in the +y direction, the ends of the two extensions 33" and the two conductive pins 15' point in different directions, so the two extensions The end of the 33" is connected to a circuit board 5, and the two conductive pins 15' are connected to another circuit board 4, and the circuit board 4 and the circuit board 5 are perpendicular to each other and respectively parallel to the paper surface and the vertical paper surface. Referring to FIG. 7, FIG. 7 is a side view assembly diagram of a fifth embodiment of a transformer structure with adjustable leakage inductance according to the present invention. The two extension portions 33" of each of the secondary windings 30" are straight in a strip shape such that their ends are Pointing in the -x direction, and the two conductive pins 15" of a bobbin 10" point in the -x direction, the ends of the two extensions 33" and the two conductive pins 15" point in the same direction, so the two extensions Both the end of the 33" and the two conductive pins 15" are connected to the same circuit board 5.
Referring to FIG. 8, FIG. 8 is a perspective exploded view of a sixth embodiment of a transformer structure with adjustable leakage inductance according to the present invention. In this embodiment, each of the secondary windings 30' is a planar winding formed by a conductive sheet, such as a copper sheet. Each of the secondary windings 30' has a hollow body 31'. The hollow body 31' has a hollow hole 32'. The two-stage windings 30' are respectively disposed on two sides of the winding groove 12 and each of the hollow holes 32'. This through hole 11 of the bobbin 10 is corresponding. Each of the secondary windings 30 ′ further has two extending portions 33 ′ respectively connected to the two ends of the hollow body 31 ′, and each of the extending portions 33 ′ can be connected to an electronic component, a heat sink or a circuit. Board connection. An extension 33' of each of the secondary windings 30' is connected by a connecting element 34' to form an intermediate tap. In this embodiment, the connecting component 34' is a conductive piece, and the conductive piece is, for example, a copper piece; but the invention is not limited thereto, if each of the secondary windings is a planar winding formed by a circuit board wire, Then the connecting element is a circuit board conductor.
Referring to FIG. 9, FIG. 9 is a perspective exploded view of a seventh embodiment of a transformer structure with adjustable leakage inductance according to the present invention. In this embodiment, the transformer structure further includes another two-stage winding 30" and two circuit boards 60. The two-stage winding 30" and the other two-stage windings 30" both adopt the secondary as shown in FIG. The windings are each a planar winding and have a hollow body 31" having a hollow bore 32". Each of the circuit boards 60 has a hollow through hole 61 corresponding to the hollow hole 32. The two circuit boards 60 are respectively disposed on two sides of the winding groove 12, and each of the hollow through holes 61 corresponds to the through hole of the winding frame 10. 11. The two-stage windings 30 ′′ are respectively disposed on one side of the two circuit boards 60 , so they are respectively disposed on the two sides of the winding slots 12 and each of the hollow holes 32 ′′ corresponding to the winding frame 10 The through hole 11. The other two-stage windings 30" are respectively disposed on the other side of the two circuit boards, so that they are respectively disposed on the two sides of the winding groove 12 after the assembly, and each of the hollow holes 32" is correspondingly wound The through hole 11 of the wire frame 10.
In other words, the transformer structure includes four secondary windings 30", wherein the secondary windings 30" are respectively disposed on two sides of one circuit board 60, and the other two secondary windings 30" are respectively disposed on two of the other circuit boards 60. On the side, and through the connection on the circuit, a current flows through the secondary winding 30" on the side of the two circuit boards 60 during the positive half cycle of the alternating current input, and also during the negative half cycle of the alternating current input. Current flows through the secondary winding 30" on the other side of the two circuit boards 60, and the load is shared by the secondary windings 30" on both sides of the circuit board 60 to reduce the flow through each of the secondary windings 30" The electric current is used to reduce the generation of heat. Each of the secondary windings 30" is a planar winding formed by a conductive sheet, such as a copper piece, and the two extensions 33" of each of the secondary windings 30" are The present invention is not limited thereto. For example, the two extensions of each of the secondary windings may have an L-shaped extension as shown in FIGS. 3 and 4, and for example, each of the secondary windings may be Figure 1 and Figure 2 show the planar winding formed by the board wires.
While the present invention has been described in its preferred embodiments, the present invention is not intended to limit the invention, and the present invention may be modified and modified without departing from the spirit and scope of the invention. The scope of protection is subject to the definition of the scope of the patent application.
1‧‧‧變壓器結構 1‧‧‧Transformer structure
10‧‧‧繞線架 10‧‧‧ Winding frame
11‧‧‧通孔 11‧‧‧through hole
12‧‧‧繞線槽 12‧‧‧Rolling groove
13‧‧‧隔板 13‧‧‧Baffle
14‧‧‧溝槽 14‧‧‧ trench
15‧‧‧導電接腳 15‧‧‧Electrical pins
20‧‧‧初級繞組 20‧‧‧Primary winding
30‧‧‧次級繞組 30‧‧‧Secondary winding
31‧‧‧中空主體 31‧‧‧ hollow body
32‧‧‧中空孔洞 32‧‧‧ hollow holes
33‧‧‧延伸部 33‧‧‧Extension
40‧‧‧磁性環片 40‧‧‧Magnetic ring
41‧‧‧中空通孔 41‧‧‧ hollow through hole
50‧‧‧磁芯組 50‧‧‧Magnetic core group
51‧‧‧磁軸 51‧‧‧Magnetic axis
60‧‧‧電路板 60‧‧‧ boards
61‧‧‧中空穿孔 61‧‧‧ hollow perforation
2‧‧‧電子元件 2‧‧‧Electronic components
Claims (8)
一繞線架，該繞線架具有貫穿的一通孔及一環繞該通孔設置的繞線槽，該繞線槽內設置有至少一隔板以形成複數溝槽；
一初級繞組，纏繞於該複數溝槽中至少一溝槽內；
兩次級繞組，各該次級繞組為平面式繞組且具有一中空主體，該中空主體具有一中空孔洞，該兩次級繞組分別設置於該繞線槽兩側且各該中空孔洞對應該繞線架的該通孔；
複數可選的磁性環片，各該磁性環片具有一中空通孔，該複數磁性環片分別設置於該繞線槽兩側且各該中空通孔對應該繞線架的該通孔；以及
一磁芯組，具有一磁軸，該磁軸穿設於該繞線架的該通孔、該兩次級繞組的中空孔洞及該複數可選的磁性環片的中空通孔。
A transformer structure with adjustable leakage inductance, comprising:
a bobbin having a through hole and a winding groove disposed around the through hole, wherein the winding groove is provided with at least one partition to form a plurality of grooves;
a primary winding wound in at least one of the plurality of trenches;
Two secondary windings, each of which is a planar winding and has a hollow body, the hollow body has a hollow hole, and the two-stage windings are respectively disposed on two sides of the winding groove and each of the hollow holes corresponds to The through hole of the wire frame;
a plurality of optional magnetic ring pieces, each of the magnetic ring pieces having a hollow through hole, the plurality of magnetic ring pieces being respectively disposed on two sides of the winding groove and each of the hollow through holes corresponding to the through hole of the winding frame; A magnetic core group has a magnetic shaft, the magnetic shaft is disposed through the through hole of the bobbin, the hollow hole of the two-stage winding, and the hollow through hole of the plurality of optional magnetic ring pieces.
另兩次級繞組，各為平面式繞組且具有一中空主體，該中空主體具有一中空孔洞；以及
兩電路板，各該電路板具有一與該中空孔洞對應的中空穿孔，該兩電路板分別設置於該繞線槽兩側且各該中空穿孔對應該繞線架的該通孔，該兩次級繞組分別設置於該兩電路板的一側，該另兩次級繞組分別設置於該兩電路板的另一側。The adjustable leakage transformer structure as described in claim 7 of the patent scope further includes:
Another two-stage winding, each of which is a planar winding and has a hollow body, the hollow body has a hollow hole; and two circuit boards, each of the circuit boards has a hollow perforation corresponding to the hollow hole, the two circuit boards respectively The two-stage windings are respectively disposed on one side of the two circuit boards, and the other two-stage windings are respectively disposed on the two sides of the two wires. The other side of the board.
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| TW102122876A TW201501141A (en) | 2013-06-27 | 2013-06-27 | Transformer structure with adjustable leakage inductance |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109036769A (en) * | 2017-06-08 | 2018-12-18 | 台达电子企业管理（上海）有限公司 | Magnetic element and vehicle power module with it |
| US11842838B2 (en) | 2017-06-08 | 2023-12-12 | Delta Electronics (Shanghai) Co., Ltd. | Magnetic component |
-
2013
- 2013-06-27 TW TW102122876A patent/TW201501141A/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109036769A (en) * | 2017-06-08 | 2018-12-18 | 台达电子企业管理（上海）有限公司 | Magnetic element and vehicle power module with it |
| US11842838B2 (en) | 2017-06-08 | 2023-12-12 | Delta Electronics (Shanghai) Co., Ltd. | Magnetic component |
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