TW403917B - Inductive element - Google Patents

Inductive element Download PDF

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Publication number
TW403917B
TW403917B TW087120654A TW87120654A TW403917B TW 403917 B TW403917 B TW 403917B TW 087120654 A TW087120654 A TW 087120654A TW 87120654 A TW87120654 A TW 87120654A TW 403917 B TW403917 B TW 403917B
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Taiwan
Prior art keywords
wire
wires
injection molding
scope
patent application
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TW087120654A
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English (en)
Inventor
Graaf Martinus Johannes M De
Eelco Gerben Visser
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Koninkl Philips Electronics Nv
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F17/00Fixed inductances of the signal type 
    • H01F17/0006Printed inductances
    • H01F17/0033Printed inductances with the coil helically wound around a magnetic core
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14639Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles for obtaining an insulating effect, e.g. for electrical components
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/041Printed circuit coils
    • H01F41/046Printed circuit coils structurally combined with ferromagnetic material
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/12Insulating of windings
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49002Electrical device making
    • Y10T29/4902Electromagnet, transformer or inductor

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Coils Or Transformers For Communication (AREA)

Description

、本發明有關製造SMD應用 以下步驟: 包感70件方法:其方法包括 a )提供多數顧英丑> 中,、 ’ 订電電線於—噴射模製裝置之模型 b) 以此電線末端保 部分合成樹脂電線、',、、 方法藉噴射模製環繞地提供一 c) 提供一軟磁性材料 部分、。 、匕圍繞環繞地噴射模製之電線 本發明亦有關—電感元 、— 例如特別是電力電咸琴 ·。電感元件特別包括電感器, 特別是電力變壓器:° 一电感線圈’,和變壓器一樣·,例如 經發現實際上根據上 ' 題,·例如在質量產生之雷法製造之電感元件會引發問 性性質變化至一非預期矿2元件實例中,元件之電氣與磁 間產生之磁場係非最佳 已發現在攻些元件之操作期 氣短路發生在這些元件;5質化·。同樣地已發現有時一電 時,.增加這些缺點。 。當電線之厚度或直徑選擇較小 本發明之一目的係排降 在提供以促使製造且改谁’〔缺點’本發明更特別地瞄準 法' 本發明同樣地目苗準::電氣與磁性性質之電感元件方 本發明之這些與其A供-改進的電感元件,。 之方法完&,.其特徵在:精在上開段落中所敘述型式 模製之電線部分係固定在;噴射模製操作期間環繞地噴射 口疋在杈型中, 本發明係建立在實給—+ · 式洞察噴-射模製程序期間電線之變
403917 五、發明說明(2) 形成為該缺點之肩 力造成。'在該噴射制變形係由合成樹脂噴射入模型之 固電線在模型中減二衣呆作期間該非預期變形大致係藉堅 本發明之一y社 > 且有時甚至預先排除,。 電線在模型令;例係特徵在喷射模製裝置係用於堅固 線,.例如藉一條黏著二原則上,.注意其亦可能彼此連結電 程序步驟丨即提供 ,准‘此可旎性需要一額外 在一高溫噴射入模型時^外,、經發現當使用合成樹脂 又-較佳實例;在法係較不令人滿意,。 係提供在模型中且在夾後:3至;-對長形零件.,其 使呈刀刃形式.,當模以;;件可-體化., 線上。'若使用—對此刀刀 Λ·以夾住方法放置在電 近似環繞地嗔射模製之電線二較:係以像這樣的. 置在模型中。 ’’ 邛刀仏以夾住方法接合配 上—敘述方法實例之-' 而包含二對延長零件]之=:修改係根據本發明特徵方法 狀係以像這樣的鄰近電吃获嵩狀在固定電線之間.,其齒 該零件上。如此測精:同對零件保持方法分佈在 大於最後敘述實例。纟士 在鄰近電線間之匍旬距離係 危險係減少.。 由於濕氣由一短路造成之問題 部分' ii例電線形成-導線架構 在噴射模製裝置之模型中導,.泉杀構之使用簡化電線位置 線或電線在於該嘴射模圭是,電線亦連結至鄰近電 楨衣#作期:間喷射模製裝置之部分放 403917 “熹明說明(3) 上亦之此因擠出預先排除噴射模製材料.。這 斷? ,考為"壩桿)在合成樹脂已提供之後必須中 脂之另-適宜實例係(特徵在-熱塑合成樹 保存合成原則上:注意-熱 存合成樹脂之二式5、1惟,.*於必要I,定製熱保 質量產製使用。車;::保:俜:涂它們係較差吸引力於以 之熱塑合成榭 彳疋./、係由建立在液晶聚合物基礎上 有相當好的熄二;2、。t亥聚合物可輕易地喷射模製·,且具 本發明亦有p 6 A 4 Λ 其係藉噴射槿I; t:數顯著平行導電電線之電感元件‘, 楔製部分係收二1 i k繞地提供一合成樹脂.,電線之喷射 較佳是,、使用:在一軟磁性材料之塊狀,、未分割核心中 無連結表面)時,熱塑合_成樹脂:若使用一未分割核心(即 係最佳的。較佳、3則在元件之操作期間產生之磁場同質化 矣且成。、非常適〜疋:核心係顯著地由一軟磁性亞鐵鹽材料 鉾(NiZn)亞ϋ的亞鐵鹽材料包括錳辞(ΜηΖη)亞鐵鹽與鎳 A <材料。 本發明之這些盥苴‘ 且閣明。 ’、/、他内容將參考在下文說明之實例明瞭 圖式中: 圖1係根據本於明_兩、一 圖2係圖i所示^4感元件之立體圖、, 圖3A,3B與3C ^電f元件之概要縱向剖面圖·,及 不藉根據發明_方法獲得之中間產物。
第8頁 403917 五、發明說明(4) 為了說注意圖式係未依比例繪製/在不同圖式中類 似參考數字係指在圖式中之類似元件。 圖1以一電感器形式顯示一電感元件之立體圖,,此電感 元件包含一軟磁性亞鐵材料之塊狀,、未分割核心(1).,其 中此殼體由MnZn亞鐵鹽組成。該核心i包含」穿孔(2),, 其穿通十支錫板銅電線(3)。這些電線在它們的尾部(4)係 以像這樣的電感元件可焊接為一SMD元件在—印刷電路板 Π)蓋上方:: έ广嘴射模製程^ 地覆盍二=乳式絕緣合成樹脂,其中此殼體由一熱塑合成 樹知組成在液晶聚合物基礎上a 圖2係圖1顯示之電感元件之概要縱向剖 。 根據本發明方法係藉圖3_Α, 3_β與3_c較 ’ 3 -A顯示錫板銅之導嗖加椹「R呼‘·.田地次 圖 構中之+個工 (部分、,#包含提供在導線架 構中之十1大致平行電線(3) ^電線係 結至導線架構(5)之耠、笨你u ^在匕們的末私(6)連 (3) « „ ^ ^ ^ ^ f 槎勹人丄曰)連至郴近电線、,稱為"壩桿"。一導線牟 構包含大Μ些電線結構,、如圖3-A顯示杯, 木 大致平行電線(3)係隨後導引入―、 示)之模型,产从α & 貝射核製裝置(未顯
模t 、%凌地噴射模製之電線部·^ p M 續。.由於這些壩桿呈3見,嗔射 =接 間。、 貝兴衣材科未擠出在電線之 在噴射模製程序 電線之裝置。在它 模型之二個刀刃組 期間、噴射模製裝置 們最簡單的形式中 成、’在其間電_線大 之模型包含用以堅固 ’這些裝置由連結至 致係夾住在中間,。圖
第9頁 403917 五 ⑸ 發明說明 3墓在一部分電線已根據發明方法严μ ^線术構之平面圖、。在此方法中、,接1繞地噴射模製之後 ,、其擴延和"壩桿"(8) 一樣 =—合成樹脂層 ,形成在合成樹脂層⑼中.,々3^輕::; 小量點著劑提it8)個與/二^繞^導線架構移除·。在 料之表面上之德,一、 ,%也貝射模製合成樹脂材 分割 '塊狀封包传:鹽材料(ΜηΖη亞鐵鹽)之未 後,、電線自由;射模製電線之上·。最‘ 曲’、其保持適宜使用Α /成一稱為海灣翼方法彎 中,、使用於環繞地噴㊉之改進實例。在此實例 用以堅固電線。這此A 、衣电線之模型包含二對延長零件 近電線未藉相同對係提供齒狀’其係以像這樣的鄰 議距離持方法分佈在零件上。此方法造 中電感元件操作=鄰接f線之間。結[在潮濕環境 喷射模製結構係以如‘::;危險係小的。組合之環繞地 件·。 々在此上述之相同方法轉換至電感元 經發現在择竹+ 最佳同質磁場,同發明方法製造之電感元件型式產生 ‘樣地’、電氣短路危險證明係極少。
1 第10頁

Claims (1)

  1. 403917 申凊專利範圍 __________ 1. 一種製造SMD應用之電感元件 、 步驟: 法:該方法包括以下 a)提供複數個主要平行的導電, 模型中‘, 線於—噴射模製裝置之 b )以此電線末端保持自由方法择# 成樹脂給一部分電線, 9貝射模製環繞地提供合 〇提供—軟磁性材料之封包圍絲 線四周,·及 ①%繞噴射模製部分之兩 〇重製電線末端形狀; 包 其特徵在於該噴射模 線係固定在模型中,。作期間環繞嘴射 . 2. 如申請專利範圍宽〗s \ 权“分之電 裝置係備有用於固 之方法.,其特徵 3如由& _ U疋電線在模型中$ _文在於噴射模製 至少I;專利範圍第2項之方法\裝置,。 4如申嗜直 其k供於杈型中 、裝且包含 二對延圍第2項之方法,Λ夾住電線之間。 :俜之裳置,·其備有齒狀在二在於包含至少 狀知u像廷樣的鄰 \在固定電線之鬥 v 該零件上。 免線未措相同對敦# &】之間.,其齒 5_如申請專利範圍 刀佈在 一導線架構部分,复 員方法’·其特徵在扒+ 6-如φ &审.其輪送條片被移除做在於電線形成 6. 如申凊專利範圍 t。 攻 成樹脂係藉噴射模制 、 1 ’’其特徵在 7锸^ I 衣嘎繞地提供在電妫於—熱塑合 7. 一種包含複數侗i i缘上。 D 一 i ”泉之電感元件,1
    第11頁 报數個主要平行的.導電. 403917 六、申請專利範圍 係藉噴射模製部分環繞地提供一合成樹脂.,電線之噴射模 製部分係收容在一軟磁性材料之塊狀.、未分割核心中。 8.如申請專利範圍第7項之電感元件.,其特徵在核心主 要是由軟磁性肥粒鐵材料所組成.。
    第12頁
TW087120654A 1998-05-08 1998-12-11 Inductive element TW403917B (en)

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US7868725B2 (en) 2003-07-16 2011-01-11 Marvell World Trade Ltd. Power inductor with reduced DC current saturation
US8035471B2 (en) 2003-07-16 2011-10-11 Marvell World Trade Ltd. Power inductor with reduced DC current saturation
US8324872B2 (en) 2004-03-26 2012-12-04 Marvell World Trade, Ltd. Voltage regulator with coupled inductors having high coefficient of coupling

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US7868725B2 (en) 2003-07-16 2011-01-11 Marvell World Trade Ltd. Power inductor with reduced DC current saturation
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US7987580B2 (en) 2003-07-16 2011-08-02 Marvell World Trade Ltd. Method of fabricating conductor crossover structure for power inductor
US8028401B2 (en) 2003-07-16 2011-10-04 Marvell World Trade Ltd. Method of fabricating a conducting crossover structure for a power inductor
US8035471B2 (en) 2003-07-16 2011-10-11 Marvell World Trade Ltd. Power inductor with reduced DC current saturation
US8098123B2 (en) 2003-07-16 2012-01-17 Marvell World Trade Ltd. Power inductor with reduced DC current saturation
US8324872B2 (en) 2004-03-26 2012-12-04 Marvell World Trade, Ltd. Voltage regulator with coupled inductors having high coefficient of coupling

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DE69911839T2 (de) 2004-08-05
US6259345B1 (en) 2001-07-10
DE69911839D1 (de) 2003-11-13

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