EP1366519A2 - Dispositif de refroidissement - Google Patents

Dispositif de refroidissement

Info

Publication number
EP1366519A2
EP1366519A2 EP01956404A EP01956404A EP1366519A2 EP 1366519 A2 EP1366519 A2 EP 1366519A2 EP 01956404 A EP01956404 A EP 01956404A EP 01956404 A EP01956404 A EP 01956404A EP 1366519 A2 EP1366519 A2 EP 1366519A2
Authority
EP
European Patent Office
Prior art keywords
structures
heat
cooling device
conducting element
counter
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.)
Withdrawn
Application number
EP01956404A
Other languages
German (de)
English (en)
Inventor
Robert Plikat
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1366519A2 publication Critical patent/EP1366519A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
    • H01L23/40—Mountings or securing means for detachable cooling or heating arrangements ; fixed by friction, plugs or springs
    • H01L23/4006—Mountings or securing means for detachable cooling or heating arrangements ; fixed by friction, plugs or springs with bolts or screws
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
    • F28F3/048—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of ribs integral with the element or local variations in thickness of the element, e.g. grooves, microchannels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/12—Elements constructed in the shape of a hollow panel, e.g. with channels
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/42—Wire connectors; Manufacturing methods related thereto
    • H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
    • H01L2224/481—Disposition
    • H01L2224/48151—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
    • H01L2224/48221—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
    • H01L2224/48225—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being non-metallic, e.g. insulating substrate with or without metallisation
    • H01L2224/48227—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being non-metallic, e.g. insulating substrate with or without metallisation connecting the wire to a bond pad of the item

Definitions

  • the invention relates to a cooling device for at least one power semiconductor and / or at least one integrated electronic circuit, according to the preamble of claim 1.
  • a cooling device of the type mentioned is known. This serves to remove the heat generated during the operation of power semiconductors and / or integrated electronic circuits. In particular in the case of power output stages and highly integrated circuits, there is heat loss which has to be removed.
  • a cooling device is known in the prior art, which is designed as a heat sink. This can be flowed through by a cooling medium, for example water.
  • This liquid cooler has a flat surface to which the power semiconductors or the electronic circuit are fastened — also with the interposition of a flat base plate. In some applications or for certain power semiconductors or circuits, cooling via the heat sink may not be sufficient.
  • EP 0 746 022 B1 discloses a heat sink designed as a heat-conducting element, on the flat surface of which the power semiconductors or the circuit are attached. On its surface facing away from the electronic elements, this heat sink has cooling fins so that air cooling can take place. In some applications, air cooling also does not seem sufficient to be able to safely transport away the heat loss.
  • the cooling device which shows the features of claim 1
  • a reduction of the thermal resistance of the on the mounting surface between the heat sink and the power semiconductor or of the electronic circuit is achieved in a particularly advantageous manner.
  • the structures or counter-structures expand when heated, so that the interlocking structures or counter-structures are pressed against one another, which advantageously further reduces the heat transfer resistance.
  • the structures and counter-structures lie in one another like a comb, so that a very large contact surface is created between the heat-conducting element and the heat sink, as a result of which the thermal resistance between the heat-conducting element and the heat sink is reduced. It is also advantageous with comb-like structures or counter-structures that they are pressed against one another by thermal expansion, so that, as already mentioned above, the heat transfer resistance is reduced.
  • the structures and the counter-structures are formed by rods, pins and / or ribs which are spaced apart from one another. Such structures or counter structures can be produced relatively simply and inexpensively.
  • heat-conducting paste is introduced between the structures and the counter-structures in an advantageous embodiment.
  • One exemplary embodiment is characterized in that the power semiconductor or the circuits are / is arranged in a housing which can be connected to the heat-conducting element.
  • the electrical connections for the power semiconductor and / or the electronic circuit can be led out of the housing.
  • the heat-conducting element is attached to a base plate of the housing.
  • the heat element is attached to a cover plate of the housing.
  • a heat-conducting element on the base plate and a further heat-conducting element on the cover plate is attached.
  • each heat conducting element is then assigned a heat sink.
  • the intermeshing of the structures and counter-structures which is suitable according to the invention, is advantageous in such a way that a thermally-induced length and width expansion of the structures and counter-structures is possible without thermally induced stresses which could damage the assembled structural unit. It is thus possible in a particularly advantageous manner to cool so-called power MultiChip modules from both sides, these modules being fixed on both cooling devices.
  • power Multichip modules include, for example, at least one power semiconductor and / or at least one electronic circuit. If several of these modules are arranged within the housing, at least one of the modules can be attached to both the housing cover and the housing base.
  • the structures and the counter-structures are formed so as to partially different thermal resistances between the politiciansleitele - ment and the heat sink are realized.
  • the number and / or size of the ribs, webs and / or pins can be varied in a preferred embodiment.
  • structures formed by webs are connected to one another at their free ends, in particular in a heat-conducting manner, and that the counterstructures are formed by tongues extending laterally from the heat sink, which tongues lie in the spaces between the webs ,
  • the heat-conducting element and the heat sink are connected to one another by a rod-shaped fastening means, in particular a screw, in a preferred embodiment this fastening means penetrating the structures and the counter-structures transversely to their direction of extension.
  • a rod-shaped fastening means in particular a screw
  • this fastening means penetrating the structures and the counter-structures transversely to their direction of extension.
  • the heat-conducting element and the heat sink have been screwed flat onto one another, so that both elements are pressed onto one another.
  • this screw variant can result in tension, which can damage the heat-conducting element and / or the heat sink. This disadvantage is avoided with the screw connection according to the invention.
  • a particularly preferred exemplary embodiment is characterized in that elongated holes are formed on the structures and / or counter structures through which the fastening means engage. It is thus possible in a particularly advantageous manner that the structures and the counter structures remain almost freely movable with one another and that no stress occurs between them.
  • a preferred exemplary embodiment is characterized in that the power semiconductor and / or the circuit are / is attached to a substrate, preferably a direct copper bond ceramic, and in that the structures of the heat-conducting element are attached to the substrate directly or via a carrier plate ,
  • This carrier plate can be planar and, in a further development of the invention, form the housing base. In a preferred embodiment, it is made of thermally conductive material.
  • Such a flat carrier or base plate can be produced particularly simply and inexpensively.
  • FIG. 1 shows a sectional view of a first exemplary embodiment of a cooling device
  • FIG. 2 shows in section a second exemplary embodiment of a cooling device
  • FIG. 3 shows a sectional illustration along the line III-III in FIG. 2
  • FIG. 4 shows a third exemplary embodiment of a cooling device in a sectional view
  • FIG. 5 is a sectional view of the cooling device of Figure 4, and
  • FIG. 1 shows a power multichip module 1, which can have at least one power semiconductor 2 and / or at least one integrated electronic circuit 3.
  • the power semiconductor 2 and the circuit 3 are arranged on at least one substrate 4, which in a preferred embodiment can be a direct copper bond ceramic.
  • One or more modules 1 can be arranged on one or more substrates 4.
  • the electrical connections 5 of the power semiconductor 2 or the circuit 3 are led out of a module housing 6, which the individual components of the
  • the substrates 4 are attached to a heat-conducting element 7, in particular bonded.
  • the heat-conducting element 7 has a base plate 8, which forms the base of the module housing 6 and supports the substrates 4 and can therefore also be referred to as a support plate.
  • the heat-conducting element 7 On its side facing away from the module housing 6, the heat-conducting element 7 has enlarged surfaces. ßerenden structures 9 which engage in surface-enlarging counter structures 10 which are formed on a cooling device 11.
  • the structures 9 and the counter structures 10 are designed such that they engage in one another in a precisely fitting manner, so that between the structures 9 and the counter structures 10 there are contact surfaces 12 on which the structural elements S and the counter structure elements G of the structures 9 and counter structures 10 touch.
  • a thermal paste can be attached to the contact surfaces 12.
  • the structures 9 and the counterstructures 10 mesh with one another in a comb-like manner.
  • the structures or counter-structures can thus be formed by webs 13, pins 14 (FIG. 6) or ribs 15 which are spaced apart from one another.
  • the webs 13, pins 14 and ribs 15 thus form the structural elements S, which interact with the counter-structural elements G.
  • the webs, pins or ribs can have any cross-section.
  • the ribs can extend over the entire length or width of the cooling device 11. They can also run diagonally. They can be spaced apart in parallel; however, they can also form an angle with one another.
  • Self-contained ribs 15 can also be provided, as can be seen from FIG.
  • the cooling device 11 thus has a heat sink 16 to which the counter structures 10 are attached.
  • the counter structures 10 can also be formed in one piece with the cooling body 16.
  • the structures 9 can also be present as a separate component and can be connected to the base plate 8.
  • the heat sink 16 of the cooling device 11, which forms a heat sink W has at least one cooling medium channel 17.
  • several cooling medium channels 17 can also be provided. The medium flowing in the channels 17 absorbs the heat generated at the module 1 and transports it away. In a preferred embodiment, cooling takes place via a liquid, in particular water.
  • the cooling device 11 can also comprise the heat-conducting element 7
  • the heat-conducting element 7, in particular its base plate 8, is firmly connected to the heat sink W, in particular screwed.
  • the screws 18 provided for this purpose thus reach through the base plate 8 and engage in corresponding recesses 19 which are formed on the cooling device or heat sink W.
  • the screws or fastening means 18 run essentially parallel to the longitudinal direction of the structural or counter-structural elements S or G.
  • FIG. 2 shows a second embodiment of a cooling device 11, the same or Parts acting in the same way as in FIG. 1 are provided with identical reference symbols, so that reference is made to the description thereof.
  • a cooling device 11 with its cooling body 16 is arranged. It can be seen that the structures 9 do not completely engage in the counter structures; rather, gaps 19 'are formed, which thus lie between the free ends of the structures and the ends of the counter structures. These intermediate spaces 19 'serve as thermal expansion compensation spaces, so that there is no material tension when the structures or counter-structures expand in length.
  • the base plate 8 of the heat-conducting element 7 is omitted here.
  • the individual structural elements S are connected to one another via shaped pieces 20 or bridge webs, the shaped pieces 20 not having to extend over the entire length of the structural elements.
  • the structures 9 are connected directly to the substrate 4, in particular by soldering.
  • FIG. 3 also shows that the fastening means 18 ′ extend through all structural and counter-structural elements S and G.
  • the fastening means 18 ' lie essentially ' transversely to the longitudinal direction of the structural or For example, counter-structure elements S or G.
  • elongated holes 21 are formed in the structures and / or counter-structures, through which the rod-shaped fastening means 18 ′ extend, so that a relative movement between the heat-conducting element 7 and the cooling device 11 in the direction of the longitudinal extent of the structures or counter-structures is possible.
  • the same or equivalent parts in FIG. 3 as in FIG. 2 are provided with the same reference numerals.
  • a third exemplary embodiment of a cooling device 1 is described below with reference to FIGS. 4 and 5.
  • the same or equivalent parts as in the figures described above are provided with identical reference numerals. It can be seen that, although cooling on both sides is formed on the modules 1 . only one cooling device 11 is required, which has two rows of tongues 21, wherein in each row of tongues 21 there are a plurality of tongues 22 arranged one behind the other and all tongues 22 extend laterally from the cooling device 11, that is to say from its cooling body 16, and into between the webs 13 or ribs 15 engage formed spaces 23.
  • FIG. 6 shows an exemplary embodiment of a cooling device 11 in a sectional view, as is obtained according to the section line VI-VI from FIG. 1.
  • the counter structures 10 extend from the cooling body 16 of the cooling device 11.
  • the number of webs 13, pins 14 and ribs 15 can partially Different heat transfer resistances can be created between the heat-conducting element 7 and the cooling device 11. These different heat transfer resistances can be realized by the number, density and / or length of the structural elements S or counter-structural elements G.
  • a small heat transfer resistance is formed between the heat-conducting element 7 and the cooling device 11 approximately in the center of the heat sink 11, since a large number of counter-structural elements G are provided here, which interact with corresponding structural elements S.
  • the number of webs 13, pins 14 and ribs 15 can be reduced.
  • different heat transfer resistances can be realized, depending on the location at which the power semiconductor 2 or the electronic circuit 3 are attached , so that, in particular in the area of these components, appropriate heat dissipation is provided, that is to say a large number of counter-structure elements and structural elements is provided, and overall a very large heat transfer surface is provided.

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)

Abstract

L'invention concerne un dispositif de refroidissement destiné à au moins un semi-conducteur de puissance et/ou à au moins un circuit électronique intégré qui peuvent être reliés à un élément caloporteur. Ce dispositif comprend un puits de chaleur relié de façon thermoconductrice à l'élément caloporteur, ce dernier présentant, sur son côté faisant face au puits de chaleur, des structures agrandissant la surface. Ce dispositif se caractérise en ce que le puits de chaleur (W) présente, sur son côté faisant face à l'élément caloporteur (7), des contre-structures (10), agrandissant la surface, qui s'engagent de façon précise dans les structures (9).
EP01956404A 2000-08-16 2001-07-28 Dispositif de refroidissement Withdrawn EP1366519A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10039770 2000-08-16
DE10039770A DE10039770A1 (de) 2000-08-16 2000-08-16 Kühlvorrichtung
PCT/DE2001/002865 WO2002015268A2 (fr) 2000-08-16 2001-07-28 Dispositif de refroidissement

Publications (1)

Publication Number Publication Date
EP1366519A2 true EP1366519A2 (fr) 2003-12-03

Family

ID=7652437

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01956404A Withdrawn EP1366519A2 (fr) 2000-08-16 2001-07-28 Dispositif de refroidissement

Country Status (3)

Country Link
EP (1) EP1366519A2 (fr)
DE (1) DE10039770A1 (fr)
WO (1) WO2002015268A2 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10335197B4 (de) * 2003-07-30 2005-10-27 Kermi Gmbh Kühlvorrichtung für ein elektronisches Bauelement, insbesondere für einen Mikroprozessor
DE102004012026B3 (de) * 2004-03-11 2005-11-17 Hüttinger Elektronik GmbH & Co. KG Anordnung zum Kühlen
DE102005048492B4 (de) * 2005-10-07 2009-06-04 Curamik Electronics Gmbh Elektrisches Modul
DE102007021206A1 (de) * 2007-05-05 2008-11-06 Hella Kgaa Hueck & Co. Kühlkörper
WO2009062534A1 (fr) * 2007-11-13 2009-05-22 Siemens Aktiengesellschaft Module semi-conducteur de puissance
FR2951019B1 (fr) 2009-10-07 2012-06-08 Valeo Etudes Electroniques Module de puissance pour vehicule automobile
FR3128941B1 (fr) 2021-11-08 2024-03-08 Safran Systeme electrique a refroidissement par fluide caloporteur, aeronef comportant un tel systeme et procede de fabrication d’un tel systeme
US12075601B2 (en) * 2022-06-03 2024-08-27 Vitesco Technologies USA, LLC Heat dissipation structure for inverter ground screws of a belt starter generator

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000228470A (ja) * 1999-01-29 2000-08-15 Hewlett Packard Co <Hp> 熱接触面が改善された現場交換可能モジュ―ル

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Publication number Priority date Publication date Assignee Title
JPS6167248A (ja) * 1984-09-10 1986-04-07 Hitachi Ltd モジユ−ル冷却体構造
US5083373A (en) * 1986-04-25 1992-01-28 Hamburgen William R Method for providing a thermal transfer device for the removal of heat from packaged elements
US4765400A (en) * 1987-04-14 1988-08-23 International Business Machines Corp. Circuit module with pins conducting heat from floating plate contacting heat producing device
DE4242944C2 (de) * 1992-12-18 2002-04-25 Bosch Gmbh Robert Elektrisches Steuergerät
DE4310446C1 (de) * 1993-03-31 1994-05-05 Export Contor Ausenhandelsgese Schaltungsanordnung
JPH0786471A (ja) * 1993-09-20 1995-03-31 Hitachi Ltd 半導体モジュ−ル
DE69531126T2 (de) * 1994-04-22 2004-05-06 Nec Corp. Trägerelement für Kühlvorrichtung und elektronisches Gehäuse mit einem solchen Element
JP2926537B2 (ja) * 1994-12-15 1999-07-28 株式会社日立製作所 マルチチップモジュ−ルの冷却装置
US5838065A (en) * 1996-07-01 1998-11-17 Digital Equipment Corporation Integrated thermal coupling for heat generating device
US5787976A (en) * 1996-07-01 1998-08-04 Digital Equipment Corporation Interleaved-fin thermal connector
US5969950A (en) * 1998-11-04 1999-10-19 Sun Microsystems, Inc. Enhanced heat sink attachment

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000228470A (ja) * 1999-01-29 2000-08-15 Hewlett Packard Co <Hp> 熱接触面が改善された現場交換可能モジュ―ル

Also Published As

Publication number Publication date
WO2002015268A2 (fr) 2002-02-21
DE10039770A1 (de) 2002-02-28
WO2002015268A3 (fr) 2003-10-09

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