EP3542397A1 - Elektronikmodul und verfahren zum herstellen desselben - Google Patents
Elektronikmodul und verfahren zum herstellen desselbenInfo
- Publication number
- EP3542397A1 EP3542397A1 EP17787918.6A EP17787918A EP3542397A1 EP 3542397 A1 EP3542397 A1 EP 3542397A1 EP 17787918 A EP17787918 A EP 17787918A EP 3542397 A1 EP3542397 A1 EP 3542397A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electronic module
- sintered
- laser
- heat sink
- cooling
- 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- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W40/00—Arrangements for thermal protection or thermal control
- H10W40/40—Arrangements for thermal protection or thermal control involving heat exchange by flowing fluids
- H10W40/47—Arrangements for thermal protection or thermal control involving heat exchange by flowing fluids by flowing liquids, e.g. forced water cooling
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W40/00—Arrangements for thermal protection or thermal control
- H10W40/20—Arrangements for cooling
- H10W40/22—Arrangements for cooling characterised by their shape, e.g. having conical or cylindrical projections
Definitions
- the present invention relates to an electronic module and a method for manufacturing an electronic module.
- a heat transfer between an interface and a fluid is limited in a laminar flow by a small vertical mixing of the fluid in the vertical direction.
- the heat transfer can be improved if the fluid flows past with a turbulent flow at the interface.
- the present invention provides an improved electronic module and method for manufacturing an electronic module according to the main claims.
- Advantageous embodiments will become apparent from the dependent claims and the description below.
- At least one power semiconductor which is thermally conductively connected to an integrally laser-sintered heat sink; and a swirling body movably sintered in a laser-sintered cooling passage of the heat sink and sintered in a process with the heat sink.
- Power semiconductors are temperature-critical, since the resulting power loss can lead to such high temperatures without cooling, that the semiconductor material of the power semiconductor can be irreversibly damaged. Therefore, the best possible cooling of the power semiconductor is required.
- a good heat-conducting compound can be achieved for example by a thermal adhesive.
- Laser sintering can be understood here as additive manufacturing. By selective laser sintering almost any, flow-optimized and heat-resistance-optimized heat sink can be produced. In laser sintering, individual particles become one heated powder material present by means of a laser beam until the particles connect to each other at the atomic level. Components are built up in layers. Sintering may occur at temperatures below the melting point of the material. The material can also be heated until the particles are molten.
- the manufacturing method may be referred to as selective laser melting.
- bodies with integrated cavities can be produced.
- the unsintered powder from a cavity is removed after the sintering process.
- the at least one cooling channel may have been produced as such a cavity.
- the heat sink may be laser sintered from a metal material.
- the power semiconductor may be soldered to the heat sink. A particularly good cooling can be achieved by reducing heat transfer resistance.
- the power semiconductor can be soldered, for example, to a heat sink made of a material with a low thermal resistance.
- the material may be, for example, copper or aluminum.
- the power semiconductor may be an IGBT. High power can be switched via an IGBT.
- the IGBT can be particularly sensitive to heat.
- a laser-sintered shaft of the swirling body may be rotatably supported in the cooling passage.
- the swirl body may be rotatably mounted on a laser sintered axis disposed in the cooling passage.
- Bearing points can be shaped in three dimensions.
- the swirl body may be perforated. By punching additional turbulence of the cooling medium can be generated.
- the holes can be omitted during laser sintering.
- the swirl body may be irregular in shape.
- a rotatable swirler may have an irregular pitch.
- the irregular shape makes it possible to prevent noise.
- the swirl body may be formed propeller-shaped. Alternatively, the swirl body may be paddled.
- a propeller can be excited by the flow of the cooling medium to a rotation.
- the propeller blades generate turbulence in the cooling medium, which can tilt a laminar flow into a turbulent flow.
- a paddled vortex body can be excited by the flow of the cooling medium to oscillate, which can also create turbulence in the cooling medium, which can also tilt the laminar flow into a turbulent flow.
- the swirl body may be laser sintered from a plastic material.
- the swirl body may be made of less good heat conducting material, since the swirl body is not directly involved in the heat transfer.
- the electronic module may have at least one further arranged in the cooling channel, movably in a process with the heat sink sintered body. By a plurality of successively arranged in the cooling medium swirling body, the flow can be kept turbulent over a longer distance.
- Fig. 1 is an illustration of a conventional electronic module
- FIG. 2 shows an illustration of an electronic module with a pin-fin structure
- FIG 3 is an illustration of an electronic module according to an embodiment of the present invention.
- FIG. 4 is an illustration of a propeller-shaped swirling body according to an embodiment of the present invention.
- FIG. 5 is an illustration of a paddle-shaped swirling body according to an embodiment of the present invention.
- FIG. 6 is a flowchart of a method of manufacturing an electronic module according to an embodiment of the present invention.
- the electronic module 100 has a power semiconductor 102 and a bottom plate 104. On a side of the bottom plate 104 opposite the power semiconductor 102, a cooling channel 106 for a cooling medium 108 is formed. The bottom plate 104 forms one side of the cooling channel 106. The cooling medium 108 flows through the cooling passage 106.
- the bottom plate 104 is made of a thermally conductive material, such as copper.
- the power semiconductor 102 is soldered to the bottom plate 104 and thus connected in heat-conducting.
- the heat 110 penetrates the bottom plate 104 and merges into the cooling medium 108 at a contact surface 112 between the bottom plate 104 and the cooling medium 108.
- the cooling medium 108 flows with a laminar flow 114 through the cooling channel 106.
- a flow rate of the cooling medium 108 of the center of Cooling channel 106 at the largest and decreases to the edges of the cooling channel 106 steadily.
- a boundary layer 116 forms at a low flow rate due to the laminar flow 114.
- the cooling medium 108 is only slightly mixed by the laminar flow 114 transversely to the flow direction. Both effects lead to the cooling medium 108 absorbing the heat 110 substantially only in the region of the boundary layer 116.
- various types of heat exchangers 104 may be used.
- a good heat conducting material 104 such as copper to the heat transfer surface 112.
- This transition surface 112 is washed by a relatively cold cooling medium 108, so that there is a heat exchange.
- water is usually used in conjunction with a suitable antifreeze, such as glycol.
- open or multi-part cooling channels 106 can be used in order to be able to exchange the power semiconductors 102 or modules in which the power semiconductors are located and heat sinks 104 with good transition properties.
- the power loss of the power module 102 or IGBTs 102 heats the IGBT 102, which is to deliver the heat 110 as quickly and efficiently as possible.
- the cooling plate 104 usually consists of good heat-conducting material, for example Copper or aluminum and has direct contact with the cooling medium 108. By arrows, the flow direction is shown.
- FIG. 1 shows a purely laminar flow 114 with a flat boundary surface 112 without structures.
- a laminar flow 114 of the cooling medium 108 takes place at the interface 112 between the water 108 and the copper plate 104.
- the cooling medium 108 Once the cooling medium 108 has almost reached the temperature of the copper plate 104, it can no longer absorb more heat. Coolant 108, which is located further down, here in the negative z-direction, however, can still have a lower temperature.
- FIG. 2 shows a representation of an electronic module 100 with a pin-fin structure 200.
- the electronic module 100 essentially corresponds to the electronic module in FIG. 1.
- the pin-fin structure 200 is on the bottom plate 104 arranged.
- the pin-fin structure 200 has extensions 202 of heat-conducting material, which protrude into the cooling channel 106.
- the pin-fin structure 200 may also have its own base plate, which is thermally conductively connected to the bottom plate 104.
- the cooling medium 108 flows around the pin-fin structure 200.
- the contact surface 112 is enlarged by the pin-fin structure 200.
- the heat 110 is transported in the extensions 202 of the pin-fin structure 200 in the direction of the flow center, so that the heat 110 is absorbed by a larger proportion of the cooling medium 108 and transported away.
- the temperature decreases projections 202 with increasing distance from the bottom plate 104, so that with increasing distance from the bottom plate 104 due to the decreasing temperature gradient between the extensions 202 and the cooling medium 108 less and less heat 110 is discharged to the cooling medium 108.
- the pin-fin structure 200 By the pin-fin structure 200, a flow resistance of the cooling channel 106 is increased. From a certain flow velocity, the flow in the area of the pin-fin structure 200 therefore becomes turbulent. Due to the turbulent flow is a Heat transfer between the contact surface 112 and the cooling medium 108 improved. However, the pin-fin structure 200 hinders the mixing of the cooling medium 108 transversely to the flow direction.
- the heat sink 104 may have fixed structures 202 which project into the cooling medium 108 and so on the one hand to make the interface 112 sufficiently large and on the other hand to make the flow turbulent.
- Such structures 202 may be embodied as so-called pin-fin structures 200, wherein pins 202 of copper protrude into the cooling medium 108.
- This structure 200 is rigid and requires a two-part construction of the cooling channel 106 and heat sink 104, since this structure 200 can not otherwise be manufactured.
- the cooling channel 106 and the heat sink 104 are sealed and sealed by means of connection technology. Either this is done with a rubber seal or, for example, by the use of welding techniques, such as friction stir welding.
- FIG. 2 shows a laminar flow with a pin-fin structure 200 as a structure 202 protruding into the cooling medium 108.
- static elements 202 such as copper pins 202 protruding from the copper plate 104, causes swirling of the coolant flow 108.
- the heat 110 may continue to enter the coolant 108 through the pins 202 and the upstanding pins 202 simultaneously cause swirling of the current in the y-direction.
- the standing in the cooling medium 108 elements 202 may also take various other geometric shapes, such as surfaces, webs or wing profiles.
- fixed flow-influencing elements 202 are introduced into the cooling channel 106, which cause a partial turbulence.
- FIG. 3 shows a representation of an electronic module 100 according to an embodiment of the present invention.
- the electronic module 100 essentially corresponds to the electronic module in FIG. 1.
- the power semiconductor 102 is here arranged on a laser-sintered heat sink 300 and connected to it in a heat-conducting manner.
- the cooling channel 106 is a recess in the integrally laser-sintered heat sink 300 executed.
- a swirling body 302 produced in the same sintering process as the heat sink 300 is arranged.
- the laminar flow 114 strikes the swirling body 302 and sets it in motion. The movement causes the laminar flow 114 to flow into a turbulent flow 304.
- the turbulent flow 304 minimizes the boundary layer 116 at the contact surface 112 and improves heat transfer between the contact surface 112 and the cooling medium 108.
- the unimpeded mixing of the cooling medium 108 transversely to the flow direction continuously cooler coolant 108 is guided from the center of flow to the contact surface 112, while warmed coolant 108 is led away from the contact surface 112.
- the substantially unobstructed cooling channel 106 has a low flow resistance.
- FIG. 3 illustrates an integrated turbulator 302 for ensuring a turbulent flow 304 for improved heat transfer.
- At least one integrated mobile turbulator 302 is used in a one-piece device 300 for the dehumidification of power semiconductors 102.
- the movable turbulator 302 is integrated directly into the heat sink 300 using the additive manufacturing technology and causes a turbulence 304 through a fluidically induced movement, so that the boundary surfaces 112 are always supplied with turbulent flow. Additive manufacturing therefore makes it possible to integrate a function which conventionally would not be possible.
- FIG. 3 shows a turbulent flow 304 with integrated exemplary movable propeller 302 as turbulator 302.
- the introduction of a movable turbulator element 302 causes turbulence in the cooling channel 106, which always transports cold coolant 108 to the interface 112.
- the turbulence takes place in the z-direction.
- FIG. 4 shows an illustration of a propeller-shaped swirl body 302 according to an embodiment of the present invention.
- the swirl body 302 is shown in two views.
- the swirling body 302 is arranged in the cooling passage 106 as in FIG. 3.
- a holding structure 400 of the swirling body 302 is shown here.
- the support structure 400 is integrally connected to the heat sink and laser sintered in the same sintering process as the swirl body 302 and the heat sink.
- the swirl body 302 is formed here propeller-shaped.
- the swirl body 302 has four propeller blades aligned radially to a propeller hub. The propeller blades are set at an angle to the flow direction.
- the support structure 400 has struts 402 and a rotation axis 404.
- the struts 402 are arranged in two planes on either side of the swirl body 302 transversely to the cooling channel 106 and each form a cross.
- the axis of rotation 404 extends between the intersections of the struts 402.
- the axis of rotation 404 is aligned substantially on a central axis of the cooling channel 106 axially to the cooling channel 106.
- the swirl body 302 is rotatably disposed about the rotation axis 404.
- the propeller hub has a through hole in which the axis of rotation 404 is located.
- the support structure 400 includes the struts 402 and two bearings 406 for a propeller shaft 408 of the swirl body 302.
- the bearings 406 are arranged in the two planes on either side of the swirling body 302 at the crossing points of the struts 402.
- the bearings 406 can For example, be designed as through holes or blind holes for stub shaft of the propeller shaft 408.
- FIG. 4 shows, by way of example, a propeller 302, which is attached to support rods 402 in the cooling channel 106.
- the cooling channel 106 can be made in one piece. Elaborate two or more parts to be screwed together housing parts can be saved. Thus, additional functional integration is possible by this method.
- the cooling channel 106 can be made in one piece, wherein the movable part 302 is already integrated during manufacture.
- the at least one movable part 302 is introduced directly into a cooling circuit, so that a turbulent flow of the heat-emitting surface is ensured.
- the movable parts 302 may be made of metallic material and plastic.
- At least one propeller-like component 302 is introduced into the cooling channel 106.
- the movable part 302 is fixed to support struts 402.
- the internal propeller 302 is then moved by the flow, thus providing a turbulent flow.
- FIG. 5 is an illustration of a paddle swirl body 302 according to one embodiment of the present invention.
- the swirl body 302 is shown in three views.
- the swirling body 302 is arranged centrally in the cooling channel 106, as in FIG. 4.
- the support structure 400 has struts 402 as in FIG. 4.
- the struts are arranged here in a plane in the flow direction upstream of the swirling body 302.
- the struts 402 are cross-shaped transversely to the cooling channel 106 as in FIG. orderly.
- the swirl body 302 is vibratably connected to the struts 402 at a crossing point of the struts 402.
- the Verwirbelungs stresses 302 is formed here as biberschwanzförmig flattened oscillating body.
- the swirl body 302 is connected to the support structure 400 at its upstream end.
- opposing vortices are formed on the opposite flattened sides of the swirling body 302, which cause the swirling body 302 to swing back and forth, which in turn amplifies the swirling.
- the vortices detach at the outflow edge of the swirl body 302 and lead to a mixing of the coolant transversely to the flow direction.
- At least one movable element 302 is imprinted in the cooling channel 106 which moves in the fluid flow in the manner of an artificial fishing lure 302. This is also held by holding webs 402 in the cooling channel 106 and swirled by the flow in the channel 106, the coolant.
- FIG. 6 shows a flowchart of a method 600 for producing an electronic module according to an embodiment of the present invention.
- the method includes a step 602 of providing and a step 604 of connecting.
- step 602 of providing a power semiconductor and an integrally laser-sintered heat sink with at least one cooling channel are provided.
- a swirling body laser-sintered in a process with the heat sink is arranged.
- step 604 of the connection the power semiconductor is thermally conductively connected to the heat sink.
- an exemplary embodiment comprises a "and / or" link between a first feature and a second feature
- this can be read so that the embodiment according to one embodiment, both the first feature and the second feature and according to another embodiment, either only the first Feature or only the second feature.
Landscapes
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
- Powder Metallurgy (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016222376.3A DE102016222376B3 (de) | 2016-11-15 | 2016-11-15 | Elektronikmodul und Verfahren zum Herstellen desselben |
| PCT/EP2017/077097 WO2018091233A1 (de) | 2016-11-15 | 2017-10-24 | Elektronikmodul und verfahren zum herstellen desselben |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3542397A1 true EP3542397A1 (de) | 2019-09-25 |
Family
ID=60162201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP17787918.6A Withdrawn EP3542397A1 (de) | 2016-11-15 | 2017-10-24 | Elektronikmodul und verfahren zum herstellen desselben |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20200066615A1 (de) |
| EP (1) | EP3542397A1 (de) |
| JP (1) | JP2020513686A (de) |
| CN (1) | CN109952638A (de) |
| DE (1) | DE102016222376B3 (de) |
| WO (1) | WO2018091233A1 (de) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102018209586A1 (de) * | 2018-06-14 | 2019-12-19 | Volkswagen Aktiengesellschaft | Elektronisches Bauteil mit verbesserter Kühlleistung und Kraftfahrzeug mit zumindest einem elektronischen Bauteil |
| DE102018211666A1 (de) * | 2018-07-12 | 2020-01-16 | Mahle International Gmbh | Kühlanordnung |
| DE102020208749A1 (de) * | 2020-07-14 | 2022-01-20 | Volkswagen Aktiengesellschaft | Verfahren zum Herstellen eines gekühlten Leistungselektronikmoduls |
| CN111987001A (zh) * | 2020-07-16 | 2020-11-24 | 杰群电子科技(东莞)有限公司 | 功率半导体结构的制造方法、芯片载体及功率半导体结构 |
| CN112040733A (zh) * | 2020-09-02 | 2020-12-04 | 浙江先导热电科技股份有限公司 | 一种组合式水冷板 |
| CN112357989B (zh) * | 2020-10-23 | 2023-04-25 | 湖北恒丰医疗制药设备有限公司 | 流体连续加热设备 |
| DE102021213689B4 (de) | 2021-12-02 | 2023-06-22 | Zf Friedrichshafen Ag | Kühlvorrichtung zum Kühlen einer zu kühlenden Einheit und Verfahren zum Herstellen einer Kühlvorrichtung |
| DE102022113642A1 (de) | 2022-05-31 | 2023-11-30 | Rolls-Royce Deutschland Ltd & Co Kg | Leiterplattenanordnung |
| DE102023211624A1 (de) * | 2023-11-22 | 2025-05-22 | Zf Friedrichshafen Ag | Kühlmodul für einen Konverter und Konverter für ein Fahrzeug |
Family Cites Families (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5512162A (en) * | 1992-08-13 | 1996-04-30 | Massachusetts Institute Of Technology | Method for photo-forming small shaped metal containing articles from porous precursors |
| DE4421025C2 (de) * | 1994-06-16 | 1999-09-09 | Abb Patent Gmbh | Kühlkörper mit mindestens einem Kühlkanal |
| US6196307B1 (en) * | 1998-06-17 | 2001-03-06 | Intersil Americas Inc. | High performance heat exchanger and method |
| TWI229583B (en) * | 2003-08-03 | 2005-03-11 | Hon Hai Prec Ind Co Ltd | Liquid-cooled heat sink device |
| US20050083655A1 (en) * | 2003-10-15 | 2005-04-21 | Visteon Global Technologies, Inc. | Dielectric thermal stack for the cooling of high power electronics |
| GB2419463A (en) * | 2004-10-25 | 2006-04-26 | Elan House Ltd | Heat sink |
| US20060171801A1 (en) * | 2004-12-27 | 2006-08-03 | Matsushita Electric Industrial Co., Ltd. | Heatsink apparatus |
| US8371367B2 (en) * | 2005-08-11 | 2013-02-12 | Mitsubishi Denki Kabushiki Kaisha | Heat sink and fabricating method of the same |
| US7359198B2 (en) * | 2005-09-29 | 2008-04-15 | Avago Technologies General Ip (Singapore) Pte. Ltd. | System and method for inducing turbulence in fluid for dissipating thermal energy of electronic circuitry |
| JP2007196538A (ja) * | 2006-01-27 | 2007-08-09 | Yushin Precision Equipment Co Ltd | 中空構造物 |
| JP2007250673A (ja) * | 2006-03-14 | 2007-09-27 | Sumitomo Electric Ind Ltd | 電力変換装置および冷却構造 |
| US20080236794A1 (en) * | 2007-03-27 | 2008-10-02 | Dk Innovations Inc. | Heat-removal device |
| GB0720627D0 (en) * | 2007-10-19 | 2007-11-28 | Applied Cooling Technology Ltd | Turbulator for heat exchanger tube and method of manufacture |
| US20090321045A1 (en) * | 2008-06-30 | 2009-12-31 | Alcatel-Lucent Technologies Inc. | Monolithic structurally complex heat sink designs |
| WO2010059715A2 (en) * | 2008-11-18 | 2010-05-27 | Cc Biotech Llc | Countercurrent chromatography rotor |
| DE202012001323U1 (de) * | 2012-02-09 | 2012-02-29 | Wieland-Werke Ag | Kühlkörper mit Kühlplatte |
| WO2013163398A1 (en) * | 2012-04-25 | 2013-10-31 | Flowserve Management Company | Additive manufactured lattice heat exchanger |
| CN105144374A (zh) * | 2013-04-23 | 2015-12-09 | 亚历克西乌和特里德控股公司 | 包括具有减小的结构密度的冷却结构的散热器 |
| WO2014181984A2 (ko) * | 2013-05-10 | 2014-11-13 | Park Dong Sik | 발열체 냉각장치 |
| EP3054479B1 (de) * | 2013-10-02 | 2023-12-27 | Nissan Motor Co., Ltd. | Wärmeabstrahlungssystem |
| JP2016027598A (ja) * | 2014-07-02 | 2016-02-18 | 住友電工焼結合金株式会社 | ヒートシンクおよびその製法 |
| DE102015212717A1 (de) * | 2015-07-08 | 2017-01-12 | Robert Bosch Gmbh | Kühlvorrichtung zum Kühlen eines Leistungshalbleiters |
| DE102015215570A1 (de) * | 2015-08-14 | 2017-02-16 | Siemens Aktiengesellschaft | Kühlkörper für eine elektronische Komponente und Verfahren zu deren Herstellung |
-
2016
- 2016-11-15 DE DE102016222376.3A patent/DE102016222376B3/de not_active Expired - Fee Related
-
2017
- 2017-10-24 US US16/461,176 patent/US20200066615A1/en not_active Abandoned
- 2017-10-24 WO PCT/EP2017/077097 patent/WO2018091233A1/de not_active Ceased
- 2017-10-24 EP EP17787918.6A patent/EP3542397A1/de not_active Withdrawn
- 2017-10-24 JP JP2019525780A patent/JP2020513686A/ja not_active Ceased
- 2017-10-24 CN CN201780068692.5A patent/CN109952638A/zh active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN109952638A (zh) | 2019-06-28 |
| JP2020513686A (ja) | 2020-05-14 |
| WO2018091233A1 (de) | 2018-05-24 |
| US20200066615A1 (en) | 2020-02-27 |
| DE102016222376B3 (de) | 2018-02-15 |
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