TWI744104B

TWI744104B - Inductor

Info

Publication number: TWI744104B
Application number: TW109140711A
Authority: TW
Inventors: 蔡辛衛; 彭德智; 江旻整
Original assignee: 台達電子工業股份有限公司
Priority date: 2020-11-20
Filing date: 2020-11-20
Publication date: 2021-10-21
Also published as: TW202221734A

Abstract

An inductor is disclosed. The inductor comprises at least one first magnetic core, a second magnetic core and at least one winding assembly. The at least one first magnetic core comprises a connecting part, a first pillar and a second pillar, wherein the first pillar and the second pillar are disposed on a top surface of the connecting part, and a winding groove is included between the first pillar and the second pillar. The second magnetic core is adjacent to the first magnetic core. Each winding assembly is composed of a single metal conductive sheet wound at least one turn, and each winding is wound on the corresponding first pillar and partly located in the winding groove of the corresponding first magnetic core. The thickness of the winding assembly is less than or equal to the width of the winding groove and greater than 0.9 times the width of the winding groove.

Description

電感inductance

本案為一種電感，尤指一種可小型化，且可提升效率及增進散熱之電感。This case is an inductor, especially an inductor that can be miniaturized, and can improve efficiency and heat dissipation.

於電子產品中，經常使用各式磁性組件，例如變壓器及電感元件等，以透過電磁感應原理滿足所需之電路設計。然而，舉例而言，傳統電感之繞組通常由多組線圈並聯所構成，又每一組線圈皆會具有塗佈層(coating layer)，導致傳統電感之繞組的體積較大而需要較大的繞線空間，進而使得傳統電感的體積相對較大而不利於小型化，且因傳統電感之繞組之每一個線圈皆會具有塗佈層，使得繞組的銅損變大而造成傳統電感的效率降低。In electronic products, various magnetic components, such as transformers and inductive components, are often used to meet the required circuit design through the principle of electromagnetic induction. However, for example, the windings of traditional inductors are usually composed of multiple sets of coils in parallel, and each set of coils will have a coating layer, resulting in a larger volume of traditional inductors requiring larger windings. The wire space, in turn, makes the volume of the traditional inductor relatively large, which is not conducive to miniaturization, and because each coil of the winding of the traditional inductor has a coating layer, the copper loss of the winding increases and the efficiency of the traditional inductor is reduced.

因此，實有必要發展一種電感，以解決現有技術所面臨之問題。Therefore, it is necessary to develop an inductor to solve the problems faced by the prior art.

本案之主要目的在於提供一種電感，其可小型化，且可提升效率。The main purpose of this case is to provide an inductor which can be miniaturized and improve efficiency.

本案之另一目的在於提供一種電感，其可增進散熱。Another objective of this case is to provide an inductor which can improve heat dissipation.

為達上述目的，本案提供一種電感，包含：至少一第一磁芯，包含連接部、第一柱體及第二柱體，其中第一柱體及第二柱體設置於連接部之頂面上而分別與頂面之兩相對外側邊相鄰，且第一柱體及第二柱體之間包含繞線槽；第二磁芯，與第一磁芯相鄰設；以及至少一繞組，每一繞組由單一金屬導電片捲繞至少一圈所構成，且每一繞組套設於對應之第一柱體上並部分位於對應之第一磁芯之繞線槽內，且繞組的厚度小於或等於繞線槽之寬度，並大於繞線槽之寬度的0.9倍。To achieve the above objective, the present application provides an inductor including: at least one first magnetic core, including a connecting portion, a first pillar and a second pillar, wherein the first pillar and the second pillar are disposed on the top surface of the connecting portion The upper side is respectively adjacent to two opposite outer sides of the top surface, and a winding slot is included between the first column and the second column; the second magnetic core is arranged adjacent to the first magnetic core; and at least one winding , Each winding is formed by winding at least one turn of a single metal conductive sheet, and each winding is sleeved on the corresponding first cylinder and partly located in the winding slot of the corresponding first magnetic core, and the thickness of the winding Less than or equal to the width of the winding groove, and greater than 0.9 times the width of the winding groove.

為達上述目的，本案另提供一種電感，包含：三個第一磁芯，三個第一磁芯之其中之一磁芯組位於另外兩個第一磁芯之間，且每一第一磁芯包含連接部、第一柱體及第二柱體，其中第一柱體及第二柱體設置於連接部之頂面上，且第一柱體及第二柱體之間包含繞線槽；以及至少一繞組，每一繞組由單一金屬導電片捲繞至少一圈所構成，且每一繞組套設於對應之第一磁芯之第一柱體上，並部分位於對應之第一磁芯之繞線槽內，且位於繞線槽內之繞組的整體厚度小於或等於繞線槽之寬度，並大於繞線槽之寬度的0.9倍；其中位於兩個第一磁芯之間的第一磁芯之第一柱體係與位於外側之兩個第一磁芯之其中之一磁芯組的第一柱體相鄰，位於兩個第一磁芯之間的第一磁芯之連接部係與位於外側之兩個第一磁芯中之另一磁芯組的第一柱體相鄰。In order to achieve the above-mentioned purpose, this case also provides an inductor, including: three first magnetic cores, one of the three first magnetic cores is located between the other two first magnetic cores, and each first magnetic core The core includes a connecting part, a first column and a second column, wherein the first column and the second column are arranged on the top surface of the connecting part, and a winding groove is included between the first column and the second column And at least one winding, each winding is formed by winding at least one turn of a single metal conductive sheet, and each winding is sleeved on the first cylinder of the corresponding first magnetic core, and is partially located in the corresponding first magnetic In the winding groove of the core, the overall thickness of the winding in the winding groove is less than or equal to the width of the winding groove and greater than 0.9 times the width of the winding groove; among them, the first core located between the two first magnetic cores The first column system of a magnetic core is adjacent to the first column of one of the two first magnetic cores located on the outer side, and the connection part of the first magnetic core located between the two first magnetic cores It is adjacent to the first column of the other magnetic core group of the two first magnetic cores located on the outer side.

體現本案特徵與優點的一些典型實施例將在後段的說明中詳細敘述。應理解的是本案能夠在不同的態樣上具有各種的變化，其皆不脫離本案的範圍，且其中的說明及圖式在本質上當作說明之用，而非架構於限制本案。此外，數值範圍或參數固有地含有在各別測試或量測中存在的誤差，並且，如本文中出現用語”大約”或”實質上”一般意指在一給定值或範圍的10％、5％、1％或0.5％內。另一選擇為，用語“大約” 或”實質上”意味所屬領域的技術人員可接受的誤差內。Some typical embodiments embodying the features and advantages of this case will be described in detail in the following description. It should be understood that this case can have various changes in different aspects, which do not deviate from the scope of this case, and the descriptions and drawings therein are essentially for illustrative purposes, rather than being constructed to limit the case. In addition, numerical ranges or parameters inherently contain errors that exist in individual tests or measurements, and, as used herein, the term "about" or "substantially" generally means 10% of a given value or range, Within 5%, 1% or 0.5%. Alternatively, the term "approximately" or "substantially" means within the error acceptable to those skilled in the art.

請參閱第1圖、第2圖及第3圖，其中第1圖為本案第一較佳實施例之電感的組合結構示意圖，第2圖為第1圖所示之電感的分解結構示意圖，第3圖為第1圖所示之電感之繞組在未捲繞時的結構示意圖。如第1圖至第3圖所示，本實施例之電感1可構成單一電感，且包含第一磁芯2、第二磁芯3及繞組4。Please refer to Figure 1, Figure 2, and Figure 3. Figure 1 is a schematic diagram of the combined structure of the inductor in the first preferred embodiment of the present invention, Figure 2 is a schematic diagram of the exploded structure of the inductor shown in Figure 1. Figure 3 is a schematic diagram showing the structure of the inductor winding shown in Figure 1 when it is not wound. As shown in FIGS. 1 to 3, the inductor 1 of this embodiment can constitute a single inductor, and includes a first magnetic core 2, a second magnetic core 3, and a winding 4.

第一磁芯2包含連接部20、第一柱體21及第二柱體22，其中第一柱體21及第二柱體22設置於連接部20之頂面200上而分別與頂面200之兩相對外側邊相鄰，其中第一柱體21及第二柱體22與連接部20可為但不限於一體成形。此外，第一柱體21及第二柱體22之間更包含繞線槽23。The first magnetic core 2 includes a connecting portion 20, a first pillar 21, and a second pillar 22. The first pillar 21 and the second pillar 22 are disposed on the top surface 200 of the connecting portion 20 and are respectively connected to the top surface 200. The two opposite outer sides are adjacent, and the first column 21 and the second column 22 and the connecting portion 20 can be, but not limited to, integrally formed. In addition, the first column 21 and the second column 22 further include a winding groove 23.

第二磁芯3與第一磁芯2相鄰設而覆蓋第一磁芯2之部分結構，例如至少覆蓋第一柱體21之頂面210及第二柱體22之頂面220。於一些實施例中，第二磁芯3較佳為I型磁芯，但不以此為限。The second magnetic core 3 is arranged adjacent to the first magnetic core 2 to cover part of the structure of the first magnetic core 2, for example, at least covers the top surface 210 of the first column 21 and the top surface 220 of the second column 22. In some embodiments, the second magnetic core 3 is preferably an I-type magnetic core, but it is not limited thereto.

繞組4是由單一金屬導電片40(如第3圖所示)，例如銅片，捲繞至少一圈所構成，且繞組4在無需使用繞線架(bobbin)的情況下直接套設於第一柱體21上，且部分的繞組4位於繞線槽23內，而亦有其它部分的繞組4外露於第一磁芯2及第二磁芯3，其中位於繞線槽23內之繞組4的整體厚度T1實質上小於或等於繞線槽23之寬度W1，並實質上大於繞線槽23之寬度W1的0.9倍。於一些實施例中，繞組4更可包含相對之第一端部400及第二端部401。The winding 4 is composed of a single metal conductive sheet 40 (as shown in Fig. 3), such as a copper sheet, wound by at least one turn, and the winding 4 is directly sleeved on the first without using a bobbin. On a cylinder 21, part of the winding 4 is located in the winding slot 23, and there are other parts of the winding 4 exposed outside the first magnetic core 2 and the second magnetic core 3, of which the winding 4 is located in the winding slot 23 The overall thickness T1 is substantially less than or equal to the width W1 of the winding groove 23, and substantially greater than 0.9 times the width W1 of the winding groove 23. In some embodiments, the winding 4 may further include a first end 400 and a second end 401 opposite to each other.

由上可知，相較於傳統電感由多組線圈並聯所構成，且每組線圈皆具有塗佈層，由於本實施例之電感1之繞組4乃是由單一金屬導電片捲繞而成，故本實施例之繞組4會因單一金屬導電片而僅有單層塗佈層，如此一來，不但使得繞組4的體積較小而減少了所需的繞線空間，進而使電感1的體積縮小而有利於小型化，且繞組4的銅損也可減少而提升電感1的效率。此外，由第2圖所示可知，本案之電感1之第一磁芯3的結構實際上相似於將E型磁芯的兩個側柱去除了其中之一側柱，即本案之第一磁芯2僅包含類似於中柱的第一柱體21及類似於側柱的第二柱體22共兩個柱體，故相較於E型磁芯的散熱方向僅具有兩側(類似於第2圖所示之方向A、B)，本案之第一磁芯1可提供繞組4共三側的散熱方向(如第2圖所示之方向A、B、C)，使得本實施例之電感1的散熱效率提升。It can be seen from the above that, compared with the traditional inductor which is composed of multiple sets of coils in parallel, and each set of coils has a coating layer, since the winding 4 of the inductor 1 in this embodiment is wound by a single metal conductive sheet, The winding 4 of this embodiment has only a single coating layer due to a single metal conductive sheet. As a result, not only the volume of the winding 4 is smaller, the required winding space is reduced, and the volume of the inductor 1 is reduced. This is beneficial to miniaturization, and the copper loss of the winding 4 can also be reduced to improve the efficiency of the inductor 1. In addition, as shown in Figure 2, the structure of the first magnetic core 3 of the inductor 1 in this case is actually similar to removing one of the two side legs of the E-shaped core, that is, the first magnetic core of this case. The core 2 only includes a first column 21 similar to the center column and a second column 22 similar to the side column. Therefore, compared with the E-shaped core, the heat dissipation direction has only two sides (similar to the first column). 2 shows the directions A, B), the first magnetic core 1 in this case can provide a total of three winding 4 heat dissipation directions (such as the directions A, B, C shown in the second diagram), so that the inductor of this embodiment 1 The heat dissipation efficiency is improved.

於一些實施例中，第一柱體21可為圓形，第二柱體22可為弓形、圓形、正方形、長方形、梯形、橢圓形、不規則幾何形狀或以上至少任二者的組合形狀。另外，第一柱體21之頂面210的面積實質上相等於第二柱體22之頂面220的面積。更甚者，連接部20之頂面200的面積大於與連接部20之頂面200連接之第一柱體21之底面(未圖示)的面積。In some embodiments, the first cylinder 21 may be circular, and the second cylinder 22 may be arcuate, circular, square, rectangular, trapezoidal, elliptical, irregular geometric shape, or a combination of at least two of the above. . In addition, the area of the top surface 210 of the first column 21 is substantially equal to the area of the top surface 220 of the second column 22. Furthermore, the area of the top surface 200 of the connecting portion 20 is larger than the area of the bottom surface (not shown) of the first column 21 connected to the top surface 200 of the connecting portion 20.

於其它實施例中，繞組4可由單一金屬導電片40捲繞兩圈而構成，或者，繞組4可由單一金屬導電片40捲繞三圈以下而構成。此外，單一金屬導電片40的寬度W2與厚度T2的比例值實質上大於或等於0.5，但小於或等於20。又單一金屬導電片40的厚度T2實質上例如大於或等於1毫米，但小於或等於3毫米，而較佳為2毫米，且單一金屬導電片40之寬度W2實質上大於或等於6毫米，但小於或等於25毫米，而較佳為12.8毫米。In other embodiments, the winding 4 may be formed by winding a single metal conductive sheet 40 with two turns, or the winding 4 may be formed by winding a single metal conductive sheet 40 with less than three turns. In addition, the ratio of the width W2 to the thickness T2 of the single metal conductive sheet 40 is substantially greater than or equal to 0.5, but less than or equal to 20. The thickness T2 of the single metal conductive sheet 40 is substantially greater than or equal to 1 mm, but less than or equal to 3 mm, and preferably 2 mm, and the width W2 of the single metal conductive sheet 40 is substantially greater than or equal to 6 mm, but It is less than or equal to 25 mm, and preferably 12.8 mm.

請參閱第4圖，並配合第3圖，其中第4圖係為本案第二較佳實施例之電感的分解結構示意圖。如第4圖所示，本實施例之電感1a的結構與第1圖所示之電感1的結構相似，於此對於相同元件賦予相同符號而省略說明，惟本實施例之電感1a之繞組4更包含第一端部400、第二端部401及第一導接部41，其中第一端部400及第二端部401位於繞組4之相對兩端，例如第4圖所示，第一端部400位於繞組4之相對外側，第二端部401位於繞組4之相對內側。第一導接部41與繞組4之第一端部400一體成形，且由繞組4之第一端部400朝第一磁芯2的方向延伸，第一導接部41用以與變壓器 (未圖示)及/或系統主板 (未圖示)等以焊接方式連接。Please refer to FIG. 4 in conjunction with FIG. 3. FIG. 4 is a schematic diagram of an exploded structure of the inductor of the second preferred embodiment of the present invention. As shown in Fig. 4, the structure of the inductor 1a of this embodiment is similar to the structure of the inductor 1 shown in Fig. 1. The same components are given the same symbols and the description is omitted, except for the winding 4 of the inductor 1a of this embodiment. It further includes a first end 400, a second end 401, and a first connecting portion 41. The first end 400 and the second end 401 are located at opposite ends of the winding 4, for example, as shown in Figure 4, the first The end 400 is located on the opposite outer side of the winding 4, and the second end 401 is located on the opposite inner side of the winding 4. The first conductive portion 41 is integrally formed with the first end 400 of the winding 4, and extends from the first end 400 of the winding 4 in the direction of the first magnetic core 2. The first conductive portion 41 is used to connect with the transformer (not (Pictured) and/or system motherboard (not shown) are connected by soldering.

於一些實施例中，繞組4更包含第二導接部42，第二導接部42與繞組4之第二端部401一體成形，且由繞組4之第二端部401朝第二磁芯3的方向延伸，第二導接部42用以與變壓器及/或系統主板等以焊接方式連接。In some embodiments, the winding 4 further includes a second conductive portion 42, which is integrally formed with the second end 401 of the winding 4, and the second end 401 of the winding 4 faces the second magnetic core. Extending in the direction of 3, the second connecting portion 42 is used to connect with the transformer and/or the system main board by welding.

在本實施例之電感1a中，藉由從繞組4之第一端部400及第二端部401分別直接延伸出第一導接部41及第二導接部42，故繞組4無須再額外焊接銅排即可與變壓器及/或系統主板直接連接，因此本實施例之電感1a之繞組4上的焊接點可減少許多，如此一來，增加了繞組4上的電流可流通面積，故本實施例之電感1a可因電流可流通面積增加而更適用於功率設計相對較大的場合中。In the inductor 1a of this embodiment, by directly extending the first conductive portion 41 and the second conductive portion 42 from the first end 400 and the second end 401 of the winding 4, the winding 4 does not require additional The copper bar can be directly connected to the transformer and/or the system motherboard by welding. Therefore, the welding points on the winding 4 of the inductor 1a of this embodiment can be reduced a lot. As a result, the current flow area on the winding 4 is increased, so the current The inductor 1a of the embodiment can be more suitable for applications where the power design is relatively large due to the increase in the current flow area.

當然，第一導接部41及第二導接部42分別從繞組4之第一端部400及第二端部401延伸出的方向並不侷限於如第4圖所示，可依實際需求而以例如彎折等方式朝適當的方向延伸。Of course, the directions in which the first connecting portion 41 and the second connecting portion 42 respectively extend from the first end 400 and the second end 401 of the winding 4 are not limited to those shown in FIG. 4, and can be based on actual needs. Instead, it extends in an appropriate direction in a manner such as bending.

於一些實施例中，第一導接部41及第二導接部42可分別包含孔洞410、420，藉由孔洞410、420的設置，可幫助繞組4更有效地焊接於變壓器及/或系統主板上，同時阻隔焊接的熱能傳導至繞組4而達到斷熱的功效。In some embodiments, the first conductive portion 41 and the second conductive portion 42 may include holes 410 and 420, respectively. The arrangement of the holes 410 and 420 can help the winding 4 to be welded to the transformer and/or the system more effectively. On the main board, at the same time, the heat energy of the welding is blocked from being conducted to the winding 4 to achieve the effect of heat insulation.

請參閱第5圖，其係為本案第三較佳實施例之電感的分解結構示意圖。如第5圖所示，本實施例之電感1b包含兩個第一磁芯2a、2b、第二磁芯3及兩個繞組4，以構成多電感結構，其中兩個第一磁芯2a、2b的結構皆分別與第1圖所示之第一磁芯2的結構相同，電感1b之第二磁芯3的結構與第1圖所示之第二磁芯3的結構相同，電感1b之兩個繞組4的結構亦分別與第1圖所示之繞組4的結構相同，於此對於相同元件賦予相同符號而省略說明。Please refer to FIG. 5, which is a schematic diagram of an exploded structure of the inductor of the third preferred embodiment of the present invention. As shown in Fig. 5, the inductor 1b of this embodiment includes two first magnetic cores 2a, 2b, a second magnetic core 3, and two windings 4 to form a multi-inductance structure, in which two first magnetic cores 2a, The structure of 2b is the same as the structure of the first magnetic core 2 shown in Figure 1, and the structure of the second magnetic core 3 of the inductor 1b is the same as the structure of the second magnetic core 3 shown in Figure 1. The structure of the two windings 4 is also the same as the structure of the winding 4 shown in FIG.

於本實施例中，繞組4的個數對應於第一磁芯的個數，即對應於兩個第一磁芯2a、2b，故電感1b包含兩個繞組4，每一繞組4分別直接套設於兩個第一磁芯2a、2b中對應之第一磁芯之第一柱體21上，且部分的繞組4位於對應之第一磁芯之繞線槽23內。另外，第一磁芯2b位於第一磁芯2a及第二磁芯3之間，其中第一磁芯2b的連接部20相較於第一磁芯2b的第一柱體21係與第一磁芯2a之第一柱體21相鄰。In this embodiment, the number of windings 4 corresponds to the number of first magnetic cores, that is, corresponds to the two first magnetic cores 2a, 2b. Therefore, the inductor 1b includes two windings 4, and each winding 4 is directly sheathed. It is arranged on the first cylinder 21 of the corresponding first magnetic core of the two first magnetic cores 2a, 2b, and part of the winding 4 is located in the winding slot 23 of the corresponding first magnetic core. In addition, the first magnetic core 2b is located between the first magnetic core 2a and the second magnetic core 3. The first pillars 21 of the magnetic core 2a are adjacent to each other.

請參閱第6圖，其係為本案第四較佳實施例之電感的分解結構示意圖。如第6圖所示，本實施例之電感1c包含兩個第一磁芯2a、2b、第二磁芯3及兩個繞組4，以構成多電感結構，其中兩個第一磁芯2a、2b的結構皆分別與第1圖所示之第一磁芯2的結構相同，電感1c之第二磁芯3的結構與第1圖所示之第二磁芯3的結構相同，電感1c之兩個繞組4的結構亦分別與第1圖所示之繞組4的結構相同，於此對於相同元件賦予相同符號而省略說明。Please refer to FIG. 6, which is a schematic diagram of an exploded structure of the inductor according to the fourth preferred embodiment of the present invention. As shown in Fig. 6, the inductor 1c of this embodiment includes two first magnetic cores 2a, 2b, a second magnetic core 3, and two windings 4 to form a multi-inductance structure, in which two first magnetic cores 2a, The structure of 2b is the same as the structure of the first magnetic core 2 shown in Figure 1, and the structure of the second magnetic core 3 of the inductor 1c is the same as the structure of the second magnetic core 3 shown in Figure 1. The structure of the two windings 4 is also the same as the structure of the winding 4 shown in FIG.

於本實施例中，繞組4的個數對應於第一磁芯的個數，即對應於兩個第一磁芯2a、2b，故電感1c包含兩個繞組4，每一繞組4分別直接套設於兩個第一磁芯2a、2b中對應之第一磁芯之第一柱體21上，且部分的繞組4位於對應之第一磁芯之繞線槽23內。另外，第二磁芯3位於第一磁芯2a及第一磁芯2b之間，其中第二磁芯3之兩個相對側面分別與第一磁芯2a之第一柱體21及第二磁芯2b之第一柱體21相鄰。In this embodiment, the number of windings 4 corresponds to the number of first magnetic cores, that is, corresponds to the two first magnetic cores 2a, 2b. Therefore, the inductor 1c includes two windings 4, and each winding 4 is directly sheathed. It is arranged on the first cylinder 21 of the corresponding first magnetic core of the two first magnetic cores 2a, 2b, and part of the winding 4 is located in the winding slot 23 of the corresponding first magnetic core. In addition, the second magnetic core 3 is located between the first magnetic core 2a and the first magnetic core 2b. The first pillars 21 of the core 2b are adjacent to each other.

請參閱第7圖，其係為本案第五較佳實施例之電感的分解結構示意圖。如第7圖所示，本實施例之電感1d包含三個第一磁芯2a、2b、2c及三個繞組4，以構成多電感結構，其中三個第一磁芯2a、2b、2c的結構皆分別與第1圖所示之第一磁芯2的結構相同，電感1d之三個繞組4的結構亦分別與第1圖所示之繞組4的結構相同，於此對於相同元件賦予相同符號而省略說明。Please refer to FIG. 7, which is a schematic diagram of an exploded structure of the inductor of the fifth preferred embodiment of the present invention. As shown in Figure 7, the inductor 1d of this embodiment includes three first magnetic cores 2a, 2b, 2c and three windings 4 to form a multi-inductor structure, in which the three first magnetic cores 2a, 2b, 2c The structures are the same as those of the first magnetic core 2 shown in Fig. 1. The structures of the three windings 4 of the inductor 1d are also the same as those of the winding 4 shown in Fig. 1. The same elements are given the same Symbols and descriptions are omitted.

於本實施例中，繞組4的個數對應於第一磁芯的個數，即對應於三個第一磁芯2a、2b、2c，故電感1d包含三個繞組4，每一繞組4分別直接套設於三個第一磁芯2a、2b、2c中對應之第一磁芯之第一柱體21上，且部分的繞組4位於對應之第一磁芯之繞線槽23內。另外，第一磁芯2b位於第一磁芯2a及第一磁芯2c之間，其中第一磁芯2b之第一柱體21相對於第一磁芯2b之連接部20係與位於外側之第一磁芯2a之第一柱體21相鄰，第一磁芯2b之連接部20相對於第一磁芯2b之第一柱體21係與位於外側之第一磁芯2c之第一柱體21相鄰。In this embodiment, the number of windings 4 corresponds to the number of first magnetic cores, that is, corresponds to the three first magnetic cores 2a, 2b, 2c, so the inductor 1d includes three windings 4, and each winding 4 is It is directly sleeved on the first cylinder 21 of the corresponding first magnetic core among the three first magnetic cores 2a, 2b, 2c, and part of the winding 4 is located in the winding slot 23 of the corresponding first magnetic core. In addition, the first magnetic core 2b is located between the first magnetic core 2a and the first magnetic core 2c, and the connecting portion 20 of the first column 21 of the first magnetic core 2b relative to the first magnetic core 2b is connected to the outer side The first column 21 of the first magnetic core 2a is adjacent, and the connecting portion 20 of the first magnetic core 2b is opposite to the first column 21 of the first magnetic core 2b and the first column of the first magnetic core 2c located outside The bodies 21 are adjacent.

另外，前述提及之電感1、1a、1b、1c、1d皆可應用於電源供應器之電源轉換電路中，以構成該電源轉換電路之輸出電感，其中電源轉換電路之拓樸包括但不限於全橋相移轉換器(Full Bridge Phase Shift Converter)、半橋轉換器(Half Bridge Converter)、全橋轉換器(Full Bridge Converter)、順向式轉換器(Forward Converter)、推挽式轉換器(Push Pull Converter)、降壓式轉換器(Buck Converter)、半橋LLC串聯諧振轉換器(Half Bridge LLC Series Resonant Converter)、全橋LLC串聯諧振轉換器(Full Bridge LLC Series Resonant Converter)等。In addition, the aforementioned inductors 1, 1a, 1b, 1c, and 1d can be used in the power conversion circuit of a power supply to form the output inductor of the power conversion circuit. The topology of the power conversion circuit includes but is not limited to Full Bridge Phase Shift Converter, Half Bridge Converter, Full Bridge Converter, Forward Converter, Push-Pull Converter ( Push Pull Converter, Buck Converter, Half Bridge LLC Series Resonant Converter, Full Bridge LLC Series Resonant Converter, etc.

綜上所述，本案提供一種電感，其中電感之繞組是由單一金屬導電片捲繞而成，使得繞組的體積較小而減少了所需的繞線空間，進而使電感的體積縮小而有利於小型化，且繞組的銅損也可減少而提升電感的效率。此外，本案之電感之第一磁芯僅包含第一柱體及第二柱體共兩個柱體，故第一磁芯可提供繞組共三側的散熱方向，使得本案之電感的散熱效率提升。In summary, this case provides an inductor, in which the winding of the inductor is wound by a single metal conductive sheet, so that the volume of the winding is small and the required winding space is reduced, thereby reducing the volume of the inductor, which is beneficial Miniaturization, and the copper loss of the winding can also be reduced to improve the efficiency of the inductor. In addition, the first magnetic core of the inductor in this case only includes two pillars, the first pillar and the second pillar. Therefore, the first magnetic core can provide the heat dissipation direction of the winding on three sides, so that the heat dissipation efficiency of the inductor in this case is improved. .

須注意，上述僅是為說明本案而提出之較佳實施例，本案不限於所述之實施例，本案之範圍由如附專利申請範圍決定。且本案得由熟習此技術之人士任施匠思而為諸般修飾，然皆不脫如附專利申請範圍所欲保護者。It should be noted that the above is only a preferred embodiment for explaining the case, and the case is not limited to the described embodiment. The scope of the case is determined by the scope of the patent application attached. Moreover, this case can be modified in many ways by those who are familiar with this technology, but none of them deviates from the protection of the scope of the patent application.

1、1a、1b、1c、1d:電感 2、2a、2b、2c:第一磁芯 3:第二磁芯 4:繞組 20:連接部 21:第一柱體 22:第二柱體 200、210、220:頂面 23:繞線槽 40:單一金屬導電片 W1、W2:寬度 T1、T2:厚度 41:第一導接部 42:第二導接部1, 1a, 1b, 1c, 1d: inductance 2, 2a, 2b, 2c: the first core 3: The second core 4: winding 20: Connection part 21: The first cylinder 22: second cylinder 200, 210, 220: top surface 23: Winding groove 40: Single metal conductive sheet W1, W2: width T1, T2: thickness 41: The first connecting part 42: The second lead part

第1圖為本案第一較佳實施例之電感的組合結構示意圖；第2圖為第1圖所示之之電感的分解結構示意圖；第3圖為第1圖所示之電感之繞組在未捲繞時的結構示意圖；第4圖為本案第二較佳實施例之電感的分解結構示意圖；第5圖為本案第三較佳實施例之電感的分解結構示意圖；第6圖為本案第四較佳實施例之電感的分解結構示意圖；第7圖為本案第五較佳實施例之電感的分解結構示意圖。 Figure 1 is a schematic diagram of the combined structure of the inductor in the first preferred embodiment of the present invention; Figure 2 is a schematic diagram of the decomposed structure of the inductor shown in Figure 1; Figure 3 is a schematic diagram of the structure of the inductor winding shown in Figure 1 when it is not wound; Figure 4 is a schematic diagram of the exploded structure of the inductor in the second preferred embodiment of the present invention; Figure 5 is a schematic diagram of an exploded structure of the inductor of the third preferred embodiment of the present invention; Figure 6 is a schematic diagram of an exploded structure of the inductor of the fourth preferred embodiment of the present invention; Fig. 7 is a schematic diagram of an exploded structure of the inductor of the fifth preferred embodiment of the present invention.

1:電感 1: inductance

2:第一磁芯 2: The first core

3:第二磁芯 3: The second core

4:繞組 4: winding

20:連接部 20: Connection part

21:第一柱體 21: The first cylinder

22:第二柱體 22: second cylinder

200、210、220:頂面 200, 210, 220: top surface

23:繞線槽 23: Winding groove

W1:寬度 W1: width

T1:厚度 T1: thickness

A、B、C:方向 A, B, C: direction

Claims

一種電感，包含：至少一第一磁芯，包含一連接部、一第一柱體及一第二柱體，其中該第一柱體及該第二柱體設置於該連接部之一頂面上，且該第一柱體及該第二柱體之間包含一繞線槽；一第二磁芯，與該第一磁芯相鄰設；以及至少一繞組，每一該繞組由單一金屬導電片捲繞至少一圈所構成，且每一該繞組套設於對應之該第一磁芯之該第一柱體上，且每一該繞組部分位於對應之該第一磁芯之該繞線槽內，且位於該繞線槽內之該繞組的整體厚度小於或等於該繞線槽之一寬度，並大於該繞線槽之該寬度的0.9倍。 An inductance that contains: At least one first magnetic core includes a connecting portion, a first pillar and a second pillar, wherein the first pillar and the second pillar are disposed on a top surface of the connecting portion, and the first pillar A winding groove is included between a column and the second column; A second magnetic core, adjacent to the first magnetic core; and At least one winding, each winding is formed by winding at least one turn of a single metal conductive sheet, and each winding is sleeved on the first cylinder corresponding to the first magnetic core, and each winding part The overall thickness of the winding located in the winding slot of the corresponding first magnetic core and located in the winding slot is less than or equal to a width of the winding slot and greater than 0.9 of the width of the winding slot Times.

如請求項1所述之電感，其中該第二磁芯為一I型磁芯。The inductor according to claim 1, wherein the second magnetic core is an I-type magnetic core.

如請求項1所述之電感，其中該第一柱體為圓形，該第二柱體為弓形、圓形、正方形、長方形、梯形、橢圓形、不規則幾何形狀或以上至少任二者的組合形狀。The inductor according to claim 1, wherein the first cylinder is circular, and the second cylinder is arcuate, circular, square, rectangular, trapezoidal, elliptical, irregular geometric shape, or at least two of the above Combination shape.

如請求項1所述之電感，其中該第一柱體包含一頂面，該第二柱體包含一頂面，且該第一柱體之該頂面的面積相等於該第二柱體之該頂面的面積。The inductor according to claim 1, wherein the first column includes a top surface, the second column includes a top surface, and the area of the top surface of the first column is equal to that of the second column The area of the top surface.

如請求項1所述之電感，其中每一該繞組由該單一金屬導電片捲繞兩圈以下所構成，或其中每一該繞組由該單一金屬導電片捲繞三圈以下所構成。The inductor according to claim 1, wherein each of the windings is formed by winding the single metal conductive sheet with less than two turns, or each of the windings is formed by winding the single metal conductive sheet with less than three turns.

如請求項1所述之電感，其中該單一金屬導電片的一寬度與一厚度的比例值大於或等於0.5，小於或等於20。The inductor according to claim 1, wherein the ratio of a width to a thickness of the single metal conductive sheet is greater than or equal to 0.5 and less than or equal to 20.

如請求項1所述之電感，其中該單一金屬導電片的一厚度大於或等於1毫米，小於或等於3毫米，且該單一金屬導電片之一寬度大於或等於6毫米，小於或等於25毫米。The inductor according to claim 1, wherein a thickness of the single metal conductive sheet is greater than or equal to 1 mm and less than or equal to 3 mm, and a width of the single metal conductive sheet is greater than or equal to 6 mm and less than or equal to 25 mm .

請求項1所述之電感，其中每一該繞組包含一第一端部、一第二端部及一第一導接部，該第一端部及該第二端部位於該繞組之相對兩端，該第一導接部由該第一端部朝該第一磁芯的方向延伸。The inductor according to claim 1, wherein each of the windings includes a first end, a second end, and a first conductive portion, and the first end and the second end are located at two opposite sides of the winding The first connecting portion extends from the first end toward the first magnetic core.

請求項8所述之電感，其中每一該繞組包含一第二導接部，該第二導接部由該第二端部朝該第二磁芯的方向延伸。The inductor according to claim 8, wherein each of the windings includes a second conductive portion, and the second conductive portion extends from the second end portion toward the second magnetic core.

如請求項9所述之電感，其中該第一導接部及該第二導接部分別包含一孔洞。The inductor according to claim 9, wherein the first conductive portion and the second conductive portion each include a hole.

如請求項1所述之電感，其中該電感係構成至少一輸出電感而應用於一全橋相移轉換器、一半橋轉換器、一全橋轉換器、一順向式轉換器、一推挽式轉換器、一降壓式轉換器、一半橋LLC串聯諧振轉換器或一全橋LLC串聯諧振轉換器中。The inductor according to claim 1, wherein the inductor constitutes at least one output inductor and is applied to a full-bridge phase-shift converter, a half-bridge converter, a full-bridge converter, a forward converter, and a push-pull Type converter, a buck converter, a half-bridge LLC series resonant converter, or a full-bridge LLC series resonant converter.

如請求項1所述之電感，其中該電感包含兩個該第一磁芯及兩個該繞組，兩個該第一磁芯之其中之一該第一磁芯位於另一該第一磁芯及該第二磁芯之間，且其中之一該第一磁芯的該連接部與另一該第一磁芯之該第一柱體相鄰。The inductor according to claim 1, wherein the inductor includes two of the first magnetic cores and two of the windings, and one of the two first magnetic cores is located on the other of the first magnetic cores And the second magnetic core, and the connecting portion of one of the first magnetic cores is adjacent to the first column of the other first magnetic core.

如請求項1所述之電感，其中該電感包含兩個該第一磁芯及兩個該繞組，該第二磁芯位於兩個該第一磁芯之間，且該第二磁芯之兩個相對側面分別與兩個該第一磁芯之該第一柱體相鄰。The inductor according to claim 1, wherein the inductor includes two first magnetic cores and two windings, the second magnetic core is located between the two first magnetic cores, and two of the second magnetic cores The opposite side surfaces are respectively adjacent to the first pillars of the two first magnetic cores.

一種電感，包含：三個第一磁芯，三個該第一磁芯之其中之一該磁芯組位於另外兩個該第一磁芯之間，且每一該第一磁芯包含一連接部、一第一柱體及一第二柱體，其中該第一柱體及該第二柱體設置於該連接部之一頂面上，且該第一柱體及該第二柱體之間包含一繞線槽；以及至少一繞組，每一該繞組由單一金屬導電片捲繞至少一圈所構成，且每一該繞組套設於對應之該第一磁芯之該第一柱體上，並部分位於對應之該第一磁芯之該繞線槽內，且該繞組的整體厚度小於或等於該繞線槽之一寬度，並大於該繞線槽之該寬度的0.9倍；其中位於兩個該第一磁芯之間的該第一磁芯之該第一柱體係與位於外側之兩個該第一磁芯之其中之一該磁芯組的該第一柱體相鄰，位於兩個該第一磁芯之間的該第一磁芯之該連接部係與位於外側之兩個該第一磁芯之另一該磁芯組中的該第一柱體相鄰。 An inductance that contains: Three first magnetic cores, one of the three first magnetic cores, the magnetic core group is located between the other two first magnetic cores, and each of the first magnetic cores includes a connecting portion, a first A column and a second column, wherein the first column and the second column are disposed on a top surface of the connecting portion, and a winding is included between the first column and the second column Slot; and At least one winding, each winding is formed by winding at least one turn of a single metal conductive sheet, and each winding is sleeved on the first cylinder corresponding to the first magnetic core, and is partially located on the corresponding one In the winding slot of the first magnetic core, and the overall thickness of the winding is less than or equal to a width of the winding slot and greater than 0.9 times the width of the winding slot; The first column system of the first magnetic core located between the two first magnetic cores is adjacent to one of the two first magnetic cores located outside the first column of the magnetic core group , The connecting portion of the first magnetic core located between the two first magnetic cores is adjacent to the first column in the other magnetic core group of the two first magnetic cores located on the outer side.