EP0985218B1 - Vorrichtung und verfahren zum kühlen einer planarinduktivität - Google Patents
Vorrichtung und verfahren zum kühlen einer planarinduktivität Download PDFInfo
- Publication number
- EP0985218B1 EP0985218B1 EP98932086A EP98932086A EP0985218B1 EP 0985218 B1 EP0985218 B1 EP 0985218B1 EP 98932086 A EP98932086 A EP 98932086A EP 98932086 A EP98932086 A EP 98932086A EP 0985218 B1 EP0985218 B1 EP 0985218B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- support
- cooling
- core
- cooling element
- core element
- 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.)
- Expired - Lifetime
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Classifications
-
- 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
Definitions
- the present invention relates to a device or a method of cooling a planar inductance, in particular a planar transformer, according to the preamble of claim 1, as is known from EP 0 564 315 A1.
- Multilayer multilayer carrier boards
- a transformer core which suitably on the multilayer or is placed in openings of the same.
- planar inductors it is used particularly in power electronics through a number of mechanical and thermal problems difficult.
- the multi-layer cable carrier without special cooling measures heat up too much so that even with oversizing the use of this new technology encounters performance limits.
- a transformer arrangement or choke in a multilayer 10 with corresponding as transformer windings trained line layers has a first - in cross-section, E-shaped example - transformer core 12 on, with legs 14 by appropriate slot-shaped openings of the multilayer 10 extends.
- a second, plate-shaped and I-shaped transformer core in cross section 16 so that in the intermediate multilayer sections 18 running winding layers from the transformer core 12, 16 are enclosed.
- the core elements 12, 16 are glued to each other or flat and put so the magnetic circuit sure.
- FIG. 5 Another approach from the prior art is according to 5 of the drawing shows a thermal connection of the transformer core itself to the heat sink 22 intended. This is done using an elastic layer 26 made of heat-conducting material, that shown in FIG Way between transformer core 16 and heat sink 22 lies.
- the mechanical connection between the heat sink 22 and multilayer 10 is over spacers 28 and screws 30 realized; the naturally occurring dimensional tolerances however, the cores and bolts require the flexibility of the Material 26, which as a large, flexible Thermal pad also referred to as a "gap pad” or "soft pad” becomes.
- the arrangement according to FIG. 5 is not insignificant Manufacturing and manufacturing expenses. The same applies Disadvantages as in the embodiment according to FIG. 4.
- FIG. 6 shows the technology in which by means of elastic thermal mats 32 dissipated heat of the multilayer 10 to the heat sink 22 becomes; at the same time the transformer arrangement are held by a resilient bracket element 34.
- the core is not cooled.
- planar transformers be used in a so-called matrix arrangement; a plurality of arranged on a multilayer Transformers, each with individual, local heat dissipation need.
- the object of the present invention is therefore for multilayer carriers of the generic type with used Planar inductors to provide heat dissipation that especially suitable for high power losses and is mechanically stable as well as a simple, inexpensive and potentially automatable production allowed.
- the invention advantageously enables a planar inductance in a multilayer, in particular a circuit arrangement of power electronics, to create that extremely is easy to manufacture, opting for automatic assembly or implementation and beyond very high level of heat dissipation - both from the heat-generating Section of the multilayer as well as from the transformer core - allowed.
- the transformer cores not just as magnetic or electrical components, but viewed as mechanical elements that - due to their relatively good heat conduction, for example with ferrite - serve as thermal bridges and the multilayer assembly fix.
- the cores also implement at the shortest distance the largest possible area for heat dissipation at the point of origin.
- the adhesive layer according to the invention can be advantageous Tolerance problems between the different cores a matrix arrangement and the plate-shaped cooling element compensate.
- the thickness of the multilayer printed circuit board then plays and the thickness of the cores for mechanical Attachment no longer a role.
- brittle material for example Ferrite
- realized - core elements reliably fixed, which makes the assembly extremely vibration-resistant.
- a large, continuous metallic cooling plate used as a cooling element is used in a suitable manner as a shield against Interference fields of the inductors.
- Cooling element in addition to cooling semiconductors or other heat-generating electronic components to be used on the carrier board (multilayer) so that a complete, compact and efficient cooling and mounting system for electrical power modules.
- the cooling element according to the invention further electronic components to be cooled place that within a single operation or Assembly process both cooling the core element and also of the electronic component to be cooled in addition can be done; this can be done appropriately dimensioned projections or profiled sections of the Cooling element at points of attack and contact for one too cooling power semiconductors. The result arises this makes it particularly suitable for SMD-equipped arrangements a cooling system with no additional effort.
- FIG. 1 to 3 For the description of the exemplary embodiments in FIG. 1 to 3 apply reference numerals corresponding to FIGS. 4 to 6, if identical components are affected.
- FIG. 1 shows the top view of a power semiconductor arrangement with a multilayer board 10 and a plate-shaped, flat heat sink 22 made of common heat sink material, such as copper or aluminum.
- transformers there is a plurality of transformers on the printed circuit board 10 (or chokes) 38 - partly distributed in matrix form - arranged, these transformers (cores and winding) on their assembly side shown in FIG. 1 side facing away from contact with the entire heat sink 22 cooled and kept.
- FIG. 1 shows a plurality of (SMD-equipped) electronic components 40 on the component side board 10, and it is a plurality of power semiconductor elements 42 recognizable, also be cooled by contact with the heat sink 22.
- the E-shaped, first transformer element 12 by means of an example electrically conductive, thermally conductive adhesive connection 44 with the downward-facing surface of the multilayer 10 connected between the legs 14 and it is the plane Surface of the transformer core 12 by means of the entire surface a heat and electrically conductive adhesive 46 with the Heatsink plate 22 connected.
- the one for the adhesive connections Adhesive 44 or 46 used preferably has metal particles or the like. on that is not just electrical conductivity between the components involved, but also for a clearly superior one Ensure thermal conductivity.
- properties of the cores cooled in this way is the electrical connection between the transformer core and heat sink with practically no disadvantageous consequence.
- FIG. 3 illustrates the principle of the invention Arrangement of Fig. 2 in an environment of a heat-generating Power module, such as an electronic switching power supply is.
- the transformer arrangement 12, 16 is adjacent a power semiconductor 42, such as an insulated switching transistor, which in the manner shown also has a Adhesive connection 48 is connected to the heat sink 22 and not only uses the available cooling surface, but also also for further mechanical stabilization of the arrangement worries.
- the invention enables the additional cooling of SMD power components, for example in housings such as D-Pack, D 2 -Pack, SOT 223 etc. without additional effort.
- the resulting heat loss is dissipated to the external cooler through the multilayer; this can be seen in FIG. 3 above the projection 50.
- copper or the like can advantageously be used to improve heat conduction below the power components.
- Thermally conductive material can be introduced into the multilayer, wherein the layers can be connected to one another with vias.
- the adhesive generally fits all unevenness so that not only the thermal contact resistance by trapped air between all components involved is reduced; it also finds an effective one Area adjustment instead.
- the parts can no longer be moved against each other; it not only creates a reliable, lasting one thermal, but also a correspondingly resilient and vibration-proof mechanical connection.
- the different expansion coefficients of the multilayer and the cooling plate can preferably be matched to one another. Since such a power multilayer contains a lot of copper, the thermal linear expansion of such a plate is approximately equal to that of copper (multilayer FR 4: 10 - 17 10 - 6 / K; copper: 16.5 10 -6 / K; ferrite: 10, 5 10 -6 / K).
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Description
- Fig. 1
- eine schematische Draufsicht auf eine erfindungsgemäß zu kühlende Leiterplattenanordnung mit einer Mehrzahl von verteilt angeordneten Transformatoren und Drosseln;
- Fig. 2:
- eine seitliche Schnittansicht durch eine zu kühlende Planarinduktivität gemäß einer ersten bevorzugten Ausführungsform der Erfindung;
- Fig. 3:
- eine seitliche Schnittansicht einer weiteren Ausführungsform der Erfindung mit zusätzlichen Halbleiter-Leistungselementen;
- Fig. 4 bis Fig. 6:
- Vorgehensweise zum Kühlen von Planarinduktivitäten aus dem Stand der Technik.
Claims (7)
- Vorrichtung zum Kühlen einer Planarinduktivität mit einem eine Mehrzahl von Leitungsschichten aufweisenden, plattenförmigen Träger (10), einem Kernelement (12, 16) und einem Kühlelement (22), wobei mindestens eine Leitungsschicht des Trägers im Zusammenwirken mit dem zum Führen eines magnetischen Flusses ausgebildeten Kernelement die Planarinduktivität realisiert,wobei das Kernelement zur Fixierung des Trägers und als Wärmebrücke auf seiner ersten, einer Oberfläche des Trägers (10) zugewandten Seite mit der Oberfläche mittels eines Klebers (44) verbunden und auf einer zweiten, planaren Außenfläche mit dem eine planare Kontaktfläche aufweisenden Kühlelement (22) wärmeleitend verbunden ist, dadurch gekennzeichnet, dassder Kleber wärmeleitend ist, das Kernelement mit dem Kühlelement verklebt ist, das Kühlelement zum zusätzlichen Kühlen eines auf dem Träger vorgesehenen Leistungshalbleiters ausgebildet ist und in einem Kontaktbereich (50) mit dem Leistungshalbleiter einen Vorsprung bzw. einen geeignet profilierten Abschnitt aufweist.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß auf dem plattenförmigen Träger eine Mehrzahl von Planarinduktivitäten vorgesehen ist, die jeweils ein Kernelement aufweisen, wobei ein gemeinsames Kühlelement mit den Kernelementen verklebt ist.
- Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Kühlelement plattenförmig und sich i.w. parallel zum Träger (10) erstreckend ausgebildet ist.
- Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß das Kühlelement sich i.w. über eine Gesamtfläche des plattenförmigen Trägers (10) erstreckt.
- Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Verklebung zwischen dem Kernelement und dem Träger und/oder die Verklebung zwischen dem Kernelement und dem Kühlelement mit einem Klebstoff einer Dicke zwischen 100 und 200 Mikrometern realisiert ist.
- Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Verklebung zwischen dem Kernelement und dem Träger und/oder zwischen dem Kernelement und dem Kühlelement mittels einer doppelseitigen, thermisch leitenden Klebfolie realisiert ist.
- Verwendung der Vorrichtung nach einem der Ansprüche 1 bis 6 zur Realisierung eines Schaltnetzteils, eines Spannungskonverters oder eines Netzteils.
Applications Claiming Priority (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19722204 | 1997-05-27 | ||
DE19722204 | 1997-05-27 | ||
DE19740283 | 1997-09-13 | ||
DE19740283 | 1997-09-13 | ||
DE19808592 | 1998-02-28 | ||
DE19808592A DE19808592C2 (de) | 1997-05-27 | 1998-02-28 | Vorrichtung zum Kühlen einer Planarinduktivität |
PCT/EP1998/003104 WO1998054735A1 (de) | 1997-05-27 | 1998-05-27 | Vorrichtung und verfahren zum kühlen einer planarinduktivität |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0985218A1 EP0985218A1 (de) | 2000-03-15 |
EP0985218B1 true EP0985218B1 (de) | 2001-10-04 |
Family
ID=27217415
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98932086A Expired - Lifetime EP0985218B1 (de) | 1997-05-27 | 1998-05-27 | Vorrichtung und verfahren zum kühlen einer planarinduktivität |
Country Status (3)
Country | Link |
---|---|
US (1) | US6222733B1 (de) |
EP (1) | EP0985218B1 (de) |
WO (1) | WO1998054735A1 (de) |
Families Citing this family (39)
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EP1212927B1 (de) * | 1999-09-13 | 2007-04-11 | Commergy Technologies Limited | Leiterplattenanordnung |
FR2798814B1 (fr) * | 1999-09-22 | 2001-11-16 | Valeo Vision | Perfectionnements aux assemblages electroniques a drain thermique, notamment pour module de commande de lampe a decharge de projecteur de vehicule automobile |
JP2003534657A (ja) * | 2000-05-19 | 2003-11-18 | フィリップ エイ. ハーディング | スロット付きコア変圧器およびインダクタ |
US6459586B1 (en) | 2000-08-15 | 2002-10-01 | Galaxy Power, Inc. | Single board power supply with thermal conductors |
US6518868B1 (en) * | 2000-08-15 | 2003-02-11 | Galaxy Power, Inc. | Thermally conducting inductors |
TWI258154B (en) * | 2000-09-22 | 2006-07-11 | Flex Multi Fineline Electronix | Electronic transformer/inductor devices and methods for making same |
US7135952B2 (en) * | 2002-09-16 | 2006-11-14 | Multi-Fineline Electronix, Inc. | Electronic transformer/inductor devices and methods for making same |
US20040255604A1 (en) * | 2003-01-27 | 2004-12-23 | Longardner Robert L. | Heat extraction system for cooling power transformer |
US6714414B1 (en) * | 2003-02-07 | 2004-03-30 | Morningstar Corporation | Spring spacer assemblies for maintaining electrical components in contact with thermal transfer surfaces |
EP1458226A3 (de) * | 2003-03-11 | 2006-06-28 | Fujitsu Hitachi Plasma Display Limited | Leiterplattenanordnung und Flachspule |
US6844802B2 (en) * | 2003-06-18 | 2005-01-18 | Advanced Energy Industries, Inc. | Parallel core electromagnetic device |
KR20060054393A (ko) * | 2003-08-01 | 2006-05-22 | 지멘스 악티엔게젤샤프트 | 전자 유닛 및 전자 유닛의 제조 방법 |
JP4311243B2 (ja) * | 2004-03-15 | 2009-08-12 | 株式会社デンソー | 電子機器 |
US6963256B2 (en) * | 2004-03-29 | 2005-11-08 | Radhakrishnaiah Setty | Low cost splitter |
US7436282B2 (en) * | 2004-12-07 | 2008-10-14 | Multi-Fineline Electronix, Inc. | Miniature circuitry and inductive components and methods for manufacturing same |
JP2008523627A (ja) * | 2004-12-07 | 2008-07-03 | マルティ−ファインライン エレクトロニクス インコーポレイテッド | 小型回路、誘導部品、及びそれらの製造方法 |
US7167074B2 (en) * | 2005-01-12 | 2007-01-23 | Medtronic, Inc. | Integrated planar flyback transformer |
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 |
US20060261783A1 (en) * | 2005-05-23 | 2006-11-23 | Paul Gamboa | Electronic battery module (EBM) with bidirectional DC-DC converter |
US7645941B2 (en) | 2006-05-02 | 2010-01-12 | Multi-Fineline Electronix, Inc. | Shielded flexible circuits and methods for manufacturing same |
US9030822B2 (en) | 2011-08-15 | 2015-05-12 | Lear Corporation | Power module cooling system |
US9076593B2 (en) | 2011-12-29 | 2015-07-07 | Lear Corporation | Heat conductor for use with an inverter in an electric vehicle (EV) or a hybrid-electric vehicle (HEV) |
US8971041B2 (en) | 2012-03-29 | 2015-03-03 | Lear Corporation | Coldplate for use with an inverter in an electric vehicle (EV) or a hybrid-electric vehicle (HEV) |
US8902582B2 (en) * | 2012-05-22 | 2014-12-02 | Lear Corporation | Coldplate for use with a transformer in an electric vehicle (EV) or a hybrid-electric vehicle (HEV) |
US8971038B2 (en) * | 2012-05-22 | 2015-03-03 | Lear Corporation | Coldplate for use in an electric vehicle (EV) or a hybrid-electric vehicle (HEV) |
DE102012222959B4 (de) * | 2012-12-12 | 2015-04-02 | Semikron Elektronik Gmbh & Co. Kg | Leistungsbauelementeinrichtung |
WO2014206460A1 (en) * | 2013-06-26 | 2014-12-31 | Telefonaktiebolaget L M Ericsson (Publ) | Switched mode power supply module and method of manufacturing the same |
CN104684338B (zh) * | 2013-11-26 | 2018-01-30 | 台达电子企业管理(上海)有限公司 | 散热基座与电子装置 |
JP6115464B2 (ja) * | 2013-12-20 | 2017-04-19 | 株式会社オートネットワーク技術研究所 | 回路構成体 |
US9362040B2 (en) | 2014-05-15 | 2016-06-07 | Lear Corporation | Coldplate with integrated electrical components for cooling thereof |
US9615490B2 (en) | 2014-05-15 | 2017-04-04 | Lear Corporation | Coldplate with integrated DC link capacitor for cooling thereof |
US10147531B2 (en) | 2015-02-26 | 2018-12-04 | Lear Corporation | Cooling method for planar electrical power transformer |
FR3045922B1 (fr) * | 2015-12-17 | 2018-09-21 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Dispositif electronique comportant au moins une inductance comprenant des moyens de gestion thermique passifs |
US10104805B2 (en) | 2016-05-09 | 2018-10-16 | The United States Of America As Represented By The Secretary Of The Army | Self cooling stretchable electrical circuit having a conduit forming an electrical component and containing electrically conductive liquid |
EP3416467B1 (de) * | 2017-06-13 | 2022-05-04 | ABB Schweiz AG | Wärmetauscherstruktur für eine gestellanordnung |
JP2020087994A (ja) * | 2018-11-16 | 2020-06-04 | 三菱電機株式会社 | プレーナトランス |
DE202019101381U1 (de) * | 2019-03-12 | 2020-06-15 | Tridonic Gmbh & Co Kg | Spule mit einem Spulenkern mit lokaler Kühlung, Transformator mit einer solchen Spule sowie System mit einem solchen Transformator |
JP7326782B2 (ja) * | 2019-03-13 | 2023-08-16 | Tdk株式会社 | トランスおよび電源装置 |
Family Cites Families (9)
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US4622627A (en) * | 1984-02-16 | 1986-11-11 | Theta-J Corporation | Switching electrical power supply utilizing miniature inductors integrally in a PCB |
US5598327A (en) * | 1990-11-30 | 1997-01-28 | Burr-Brown Corporation | Planar transformer assembly including non-overlapping primary and secondary windings surrounding a common magnetic flux path area |
JPH04209509A (ja) * | 1990-12-04 | 1992-07-30 | Mitsubishi Electric Corp | 金属ベース基板用トランス |
GB2252208B (en) * | 1991-01-24 | 1995-05-03 | Burr Brown Corp | Hybrid integrated circuit planar transformer |
FR2689361B1 (fr) * | 1992-03-24 | 1994-05-13 | Thomson Csf | Dispositif de refroidissement de circuit inductif. |
US5305185A (en) * | 1992-09-30 | 1994-04-19 | Samarov Victor M | Coplanar heatsink and electronics assembly |
US5652561A (en) * | 1993-06-29 | 1997-07-29 | Yokogawa Electric Corporation | Laminating type molded coil |
DE69619420T2 (de) * | 1995-03-29 | 2002-10-31 | Valeo Electronique Creteil | Transformatoreinrichtung, insbesondere für eine Versorgungseinrichtung von Entladungslampen in Kraftfahrzeugen |
US5973923A (en) * | 1998-05-28 | 1999-10-26 | Jitaru; Ionel | Packaging power converters |
-
1998
- 1998-05-27 EP EP98932086A patent/EP0985218B1/de not_active Expired - Lifetime
- 1998-05-27 US US09/424,435 patent/US6222733B1/en not_active Expired - Fee Related
- 1998-05-27 WO PCT/EP1998/003104 patent/WO1998054735A1/de active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
WO1998054735A1 (de) | 1998-12-03 |
EP0985218A1 (de) | 2000-03-15 |
US6222733B1 (en) | 2001-04-24 |
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