CN1130736C - 电感元件铁氧体磁芯的散热装置 - Google Patents

电感元件铁氧体磁芯的散热装置 Download PDF

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Publication number
CN1130736C
CN1130736C CN97121431A CN97121431A CN1130736C CN 1130736 C CN1130736 C CN 1130736C CN 97121431 A CN97121431 A CN 97121431A CN 97121431 A CN97121431 A CN 97121431A CN 1130736 C CN1130736 C CN 1130736C
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layer
heat
conduction
ferrite core
metal level
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CN1179610A (zh
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T·维尔内尔
M·爱斯古拉
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TDK Electronics AG
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Epcos AG
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/08—Cooling; Ventilating
    • H01F27/22—Cooling by heat conduction through solid or powdered fillings

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Non-Reversible Transmitting Devices (AREA)
  • Magnetic Ceramics (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
  • Soft Magnetic Materials (AREA)
  • General Induction Heating (AREA)
  • Transformer Cooling (AREA)

Abstract

为使电感元件用铁磁材料磁芯(2)散热，在磁芯(2)上设有可与散热器(3)热耦合的导电与导热层(4)，该层是通过电镀直接涂覆在铁氧体磁芯上。

Description

电感元件铁氧体磁芯的散热装置
技术领域
本发明涉及一种从电感元件的铁氧体磁芯中散热的装置。
背景技术
由EP0 532 361 A1可知，在磁芯区和变压器绕组区内装有一导电物质，它起限制作用，使磁芯的绕组发出的磁流在其中束聚。这样可降低或控制变压器的漏感。导电物质例如可以以金属层的形式被覆在磁芯上，同时对金属层刻槽以防止电短路。
发明内容
本发明的目的在于上述那种金属层的成型，使之适用于电感元件铁磁芯的散热。
本发明的目的由本文开头所述那种装置并在其中引入以下方式实现：在铁氧体磁芯上，通过电镀直接涂复一层由导电及导热材料构成的涂层，通过该涂层，铁氧体磁芯与冷却体热耦合。
附图说明
下面根据实施例和附图详细说明本发明。所示为：
图1为本发明一个具有散热装置的元件的原理图；
图2为具有适用于散热的导热层的铁磁材料磁芯的透视图。
具体实施方式
按照图1，电感元件在原理上是由一铁磁材料磁芯—通常为铁氧体磁芯2—及装在其上的线包1构成。
为进行散热，本发明在铁氧体磁芯2上加一导电和导热材料层4，例如金属层，可以是铜层或银层，它与冷却体形式的散热器3相耦合。热流概略地由箭头线表示。
为防止导电与导热层4中感生电流，该层设有断缝，不能构成闭合的电流通路。这种断缝未在图1中示出，但可从下面还将说明的图2实施例中看到。
前述那种导电与导热层例如可电镀在铁氧体磁芯上，先专门化学镀几微米厚的薄层，然后进行膜层的电镀加厚。为把膜层淀积在铁氧体材料上，使液浴的化学性能，尤其是pH值与铁氧体材料相一致。这里的目的是不损害铁氧体材料的电磁和机械性能。
如上文所述，为抑制导电与导热层中感生电流而规定有断缝，它们例如可通过磨削铁氧体磁芯的极面、通过印刷抗蚀掩模并按着腐蚀或通过激光刻槽来制得。这种局部被膜的磁芯具有的优点是在元件和膜层之间实现了小的接触电阻和接触热阻。
利用这种膜层，例如可通过焊接实现与散热器(如图1所示冷却体3)的最佳热耦合。这里的关键是铜、银等金属与铁氧体材料相比具有高得多的传导能力，热导率的差别可达100倍。导电与导热层4近似地呈现为一等温体，因此，磁芯内部在磁芯表面方向上的温度梯度比未被覆的磁芯情况下高。所以，热的流动基本上是沿着导电与导热层在冷却体的方向上进行，而不是未被覆的磁芯的情况下由导热不良的铁氧体材料进行。
与图1膜层4相应的-断续的导电与导热层，其一种可能的实施形式示于图2中E形铁氧体磁芯10上，该磁芯在规定的表面区上备有导热与导电层11。

Claims (5)

1、用于电感元件铁氧体磁芯的散热装置，具有由导电、导热材料制成的层(4；11)，通过该层，铁氧体磁芯(2；10)与冷却体(3)热耦合，其特征在于，所述层(4；11)由导电、导热材料制成，通过电镀直接涂复在铁氧体磁芯(2；10)上。
2、依据权利要求1所述的装置，其特征在于：导电、导热材料制成的层(4；11)为一金属层，它具有断缝，用以避免在封闭的导电线路中产生感生电流。
3、依据权利要求2所述的装置，其特征在于：所述金属层(4；11)为一铜层。
4、依据权利要求2所述的装置，共特征在于：所述金属层(4；11)为一银层。
5、依据权利要求1至4中任一项所述的装置，其特征在于：所述冷却体(3)与导电、导热材料制成的层(4；11)焊接在一起。
CN97121431A 1996-09-12 1997-09-12 电感元件铁氧体磁芯的散热装置 Expired - Fee Related CN1130736C (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19637211.9 1996-09-12
DE19637211A DE19637211C2 (de) 1996-09-12 1996-09-12 Einrichtung zur Abführung von Wärme von Ferritkernen induktiver Bauelemente

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CN1179610A CN1179610A (zh) 1998-04-22
CN1130736C true CN1130736C (zh) 2003-12-10

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US (1) US6002318A (zh)
EP (1) EP0831499B1 (zh)
JP (1) JPH10106847A (zh)
CN (1) CN1130736C (zh)
AT (1) ATE254797T1 (zh)
CA (1) CA2215654A1 (zh)
DE (2) DE19637211C2 (zh)
DK (1) DK0831499T3 (zh)
ES (1) ES2212021T3 (zh)
TW (1) TW353184B (zh)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4052436B2 (ja) * 2002-03-19 2008-02-27 株式会社ダイフク 複合コア非線形リアクトルおよび誘導受電回路
TW579052U (en) * 2002-08-14 2004-03-01 Delta Electronics Inc Transformer with thermal paste for heat conduction
DE102005008521A1 (de) 2005-02-24 2006-08-31 OCé PRINTING SYSTEMS GMBH Anordnung und Verfahren zum Kühlen eines Leistungshalbleiters
US20060250205A1 (en) * 2005-05-04 2006-11-09 Honeywell International Inc. Thermally conductive element for cooling an air gap inductor, air gap inductor including same and method of cooling an air gap inductor
CN101159187B (zh) * 2006-10-08 2010-07-21 财团法人工业技术研究院 具表面散热结构的电感
US7800257B2 (en) * 2006-10-25 2010-09-21 Sean Lu Heat dissipater
PL2472531T3 (pl) * 2011-01-03 2013-09-30 Hoeganaes Ab Rdzeń cewki indukcyjnej
US9980396B1 (en) 2011-01-18 2018-05-22 Universal Lighting Technologies, Inc. Low profile magnetic component apparatus and methods
EP2678930B1 (en) 2011-02-24 2020-04-08 Crane Electronics, Inc. Ac/dc power conversion system and method of manufacture of same
JP5552661B2 (ja) 2011-10-18 2014-07-16 株式会社豊田自動織機 誘導機器
US9888568B2 (en) 2012-02-08 2018-02-06 Crane Electronics, Inc. Multilayer electronics assembly and method for embedding electrical circuit components within a three dimensional module
CN103515073B (zh) * 2013-08-09 2016-08-17 西南应用磁学研究所 高功率密度磁集成平面变压器及制作方法
JP6229839B2 (ja) * 2014-01-27 2017-11-15 Fdk株式会社 巻線部品
US9831768B2 (en) 2014-07-17 2017-11-28 Crane Electronics, Inc. Dynamic maneuvering configuration for multiple control modes in a unified servo system
FR3024584A1 (fr) * 2014-07-31 2016-02-05 Noemau Composant magnetique comportant un moyen de conduction de la chaleur
DE202014105157U1 (de) 2014-10-28 2014-11-13 Abb Technology Ag Induktives Bauteil mit verbesserter Kühlung
US9230726B1 (en) * 2015-02-20 2016-01-05 Crane Electronics, Inc. Transformer-based power converters with 3D printed microchannel heat sink
US9160228B1 (en) 2015-02-26 2015-10-13 Crane Electronics, Inc. Integrated tri-state electromagnetic interference filter and line conditioning module
US9293999B1 (en) 2015-07-17 2016-03-22 Crane Electronics, Inc. Automatic enhanced self-driven synchronous rectification for power converters
DE102016110579A1 (de) 2016-06-08 2017-12-14 Epcos Ag Induktives Bauteil
US9780635B1 (en) 2016-06-10 2017-10-03 Crane Electronics, Inc. Dynamic sharing average current mode control for active-reset and self-driven synchronous rectification for power converters
US9735566B1 (en) 2016-12-12 2017-08-15 Crane Electronics, Inc. Proactively operational over-voltage protection circuit
US9742183B1 (en) 2016-12-09 2017-08-22 Crane Electronics, Inc. Proactively operational over-voltage protection circuit
US9979285B1 (en) 2017-10-17 2018-05-22 Crane Electronics, Inc. Radiation tolerant, analog latch peak current mode control for power converters
US10425080B1 (en) 2018-11-06 2019-09-24 Crane Electronics, Inc. Magnetic peak current mode control for radiation tolerant active driven synchronous power converters
WO2021199261A1 (ja) * 2020-03-31 2021-10-07 太陽誘電株式会社 部品モジュール
GB2597670B (en) * 2020-07-29 2022-10-12 Murata Manufacturing Co Thermal management of electromagnetic device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4379273A (en) * 1981-06-25 1983-04-05 Mcdonnell Douglas Corporation Pulse transformer laser diode package
EP0532360A1 (en) * 1991-09-13 1993-03-17 Vlt Corporation Transformer with controlled interwinding coupling and controlled leakage inductances and circuit using such transformer
US5532667A (en) * 1992-07-31 1996-07-02 Hughes Aircraft Company Low-temperature-cofired-ceramic (LTCC) tape structures including cofired ferromagnetic elements, drop-in components and multi-layer transformer

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB399138A (en) * 1931-12-19 1933-09-28 Gen Electric Improvements in and relating to methods of reducing heat resistance
CH299490A (de) * 1952-02-13 1954-06-15 Sondyna Ag Netztransformator mit verbesserter Wärmeabfuhr.
US2769962A (en) * 1952-08-22 1956-11-06 British Thomson Houston Co Ltd Cooling means for laminated magnetic cores
US2770785A (en) * 1953-01-29 1956-11-13 Raytheon Mfg Co Directly-cooled electromagnetic components
US2990524A (en) * 1960-02-01 1961-06-27 Hughes Aircraft Co Pulse modulator having improved ring neutralized transformer coupling network
US3179908A (en) * 1960-08-25 1965-04-20 Emp Electronics Inc Heat exchange means for electromagnetic devices
US3710187A (en) * 1971-09-30 1973-01-09 Gen Electric Electromagnetic device having a metal oxide varistor core
US5726858A (en) * 1996-05-23 1998-03-10 Compaq Computer Corporation Shielded electrical component heat sink apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4379273A (en) * 1981-06-25 1983-04-05 Mcdonnell Douglas Corporation Pulse transformer laser diode package
EP0532360A1 (en) * 1991-09-13 1993-03-17 Vlt Corporation Transformer with controlled interwinding coupling and controlled leakage inductances and circuit using such transformer
US5532667A (en) * 1992-07-31 1996-07-02 Hughes Aircraft Company Low-temperature-cofired-ceramic (LTCC) tape structures including cofired ferromagnetic elements, drop-in components and multi-layer transformer

Also Published As

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JPH10106847A (ja) 1998-04-24
EP0831499A3 (de) 1998-07-29
DK0831499T3 (da) 2004-02-16
TW353184B (en) 1999-02-21
ATE254797T1 (de) 2003-12-15
US6002318A (en) 1999-12-14
CN1179610A (zh) 1998-04-22
DE19637211A1 (de) 1998-04-02
DE19637211C2 (de) 1999-06-24
CA2215654A1 (en) 1998-03-12
ES2212021T3 (es) 2004-07-16
MX9706975A (es) 1998-08-30
DE59711023D1 (de) 2003-12-24
EP0831499B1 (de) 2003-11-19
EP0831499A2 (de) 1998-03-25

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