EP3578880A1 - Appareil de fonctionnement pourvu de structure thermoconductrice - Google Patents

Appareil de fonctionnement pourvu de structure thermoconductrice Download PDF

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Publication number
EP3578880A1
EP3578880A1 EP19176075.0A EP19176075A EP3578880A1 EP 3578880 A1 EP3578880 A1 EP 3578880A1 EP 19176075 A EP19176075 A EP 19176075A EP 3578880 A1 EP3578880 A1 EP 3578880A1
Authority
EP
European Patent Office
Prior art keywords
heat
operating device
core
coil
conducting structure
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.)
Pending
Application number
EP19176075.0A
Other languages
German (de)
English (en)
Inventor
Markus Mayrhofer
Fabio Romano
Lukas Saccavini
Andreas SCHMÖLZER
Sascha STEINER
Dominik Allgaier
Dr. Angelo Favarolo
Thomas Zengerle
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.)
ZUMTOBEL LIGHTING GmbH
Tridonic GmbH and Co KG
Original Assignee
Zumtobel Lighting GmbH Austria
Tridonic GmbH and Co KG
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 Zumtobel Lighting GmbH Austria, Tridonic GmbH and Co KG filed Critical Zumtobel Lighting GmbH Austria
Publication of EP3578880A1 publication Critical patent/EP3578880A1/fr
Pending legal-status Critical Current

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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
    • H01F27/02—Casings
    • H01F27/025—Constructional details relating to cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
    • F21V23/007—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array enclosed in a casing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/02—Arrangement of electric circuit elements in or on lighting devices the elements being transformers, impedances or power supply units, e.g. a transformer with a rectifier
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/02—Arrangement of electric circuit elements in or on lighting devices the elements being transformers, impedances or power supply units, e.g. a transformer with a rectifier
    • F21V23/026—Fastening of transformers or ballasts
    • 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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • 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
    • H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
    • H01F2027/065—Mounting on printed circuit boards
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/32—Pulse-control circuits
    • H05B45/325—Pulse-width modulation [PWM]

Definitions

  • the invention relates to an operating device for a lamp, in particular for an LED lamp.
  • Operating devices of the type mentioned are used to operate bulbs, especially LEDs, for example, to provide the lamp with a certain voltage and / or a certain current.
  • Further exemplary applications are the pulse width modulation, the adjustment of the brightness (in particular dimming) and / or the general control of the lighting means.
  • coils are used, for example in a transformer to provide energy and / or store, so that the lamp is operated accordingly.
  • Other applications of coils in such an operating device are e.g. Power correction (PFC) coils, coils in an LLC converter / converter, power input choke coils, flyback converter coils, or general energy storage coils.
  • PFC Power correction
  • the coils or coil combinations for example transformers, or magnetic components generally do not work lossless and thus emit undesirable heat or waste heat.
  • the windings and the coil core of the coil give off a lot of heat.
  • This heat must be dissipated as well as possible, so that it does not affect other electrical and / or electronic components, since the undesirable high temperatures, in particular the life of the respective electrical and / or electronic component and thus the operating device can shorten.
  • capacitive components are sensitive to such high temperatures.
  • thermal paste in particular by means of so-called TIM (thermal interface materials) gap pads, to direct the waste heat directly to the housing of the operating device or the lamp.
  • TIM thermal interface materials
  • the invention is based on the object to eliminate the above-mentioned disadvantages of the prior art, ie in particular to conduct the heat of coils more efficient or generally to optimize the heat generation of such devices.
  • the object is achieved for the operating device by the features of the independent claim.
  • Advantageous developments are the subject of the dependent claims.
  • An operating device for a luminaire, in particular for an LED luminaire, has a coil with a coil core, and a heat conduction structure which is in surface contact with the coil core, away from the coil core by the heat emitted by the coil core during operation of the coil to lead.
  • the coil core during operation of the coil, the coil core generates waste energy in the form of waste heat, which is efficiently transferred to the heat conduction structure by the heat conducting structure that is in surface contact, thereby efficiently cooling the coil core. That is, the flat contact of the heat conduction structure with the coil core, the heat according to a desired, namely defined by the heat conduction path - in particular to a heat dissipating and / or heat dissipating element of the lamp such as a heat sink of the lamp - be efficiently conducted.
  • the coil core is cooled or the heat away from it, and on the other hand prevents other electrical and / or electronic components or generally components of the operating device are affected by this heat.
  • the efficiency of the cooling of the spool core is thus improved.
  • the service life or reliability of the operating device is therefore also increased, since waste heat of the coil core influences the components of the operating device, in particular the components located in the vicinity of the coil, less. Consequently, the operating device can also be used in higher ambient temperatures.
  • the operating device may further comprise a printed circuit board, wherein the coil is provided with the rondleit für on a first side of the printed circuit board such that the heat conducting structure, the heat emitted by the bobbin heat from the bobbin and the first side away to a side facing away from the first side of the printed circuit board passes. Since on the side of the coil or on the first side (front) of the circuit board usually sensitive electrical and / or electronic components such as capacitive components are provided, these components are now due to dissipation of heat through the heat conduction structure on the second side or Back of the PCB no longer affected. Thus, in particular the components of the operating device are spared by the waste heat of the coil. And there the coil Thus, less of their waste heat is exposed, this can now be reduced in size.
  • the coil core is arranged between standing in area contact with the coil core walls of the heat conduction structure.
  • the heat conduction structure can be easily put on the spool core to automatically be in surface contact with the spool core.
  • the heat-emitting surface is increased by the standing in surface contact walls of the heat-conducting, so that the efficiency of heat dissipation and cooling is improved.
  • the heat conduction structure may be a wall closed at least around the coil core.
  • the heat conduction structure when placing the heat conduction structure can be easily, in particular automatically brought into surface contact with the spool core.
  • the area of the heat conduction structure is increased, which in turn benefits the cooling. Because of the closed surrounding wall also good thermal insulation of the components provided outside the wall can be effected.
  • air can reach the coil or the coil core, so that the convective heat transfer between the air and the coil core and thus the efficiency of the cooling is improved.
  • the heat conduction structure may be a hood or cap covering at least the coil core, which preferably has a substantially U-shaped cross section. Through the openings, the hood or the preferably defined U-shaped cross-section, thus air can flow, in particular to improve the convective heat transfer within the hood.
  • the coil core is covered to above the bobbin, so spared in particular in this direction components of the operating device of waste heat of the bobbin.
  • the heat dissipating surface is thus increased, which in turn benefits the more efficient cooling of the spool core.
  • the heat conduction structure can thus be simply placed or plugged, preferably clamped, onto the coil or the coil core.
  • the heat-conducting structure preferably has a mounting section for mounting the heat-conducting structure in the operating device, in particular on the printed circuit board, and / or on the coil.
  • the heat conduction structure can thus be simply connected to or mounted on the operating device and / or the coil, for example via a material, force and / or positive connection. It is preferred if the free ends of the hood or the foot of the wall have or have the mounting portion, so that the heat conduction structure can be particularly easily mounted.
  • the heat conduction structure may have legs for dissipating heat, preferably in the direction of the second side of the circuit board.
  • the legs By providing the legs, in turn, the heat-dissipating surface can be increased, which in turn benefits the cooling effect of the heat-conducting structure.
  • the legs have an advantageous design to be connected to other heat-dissipating elements. It is preferred if the legs pass through the circuit board. Thus, it can be effected in a particularly advantageous manner by means of the legs that heat from the front (the first side) to the back (the second side) of the circuit board (direct) is passed.
  • the legs because of the passage of the legs through the circuit board, the legs can be used simultaneously as fastening means for fixing the heat conduction structure on the circuit board.
  • the legs are adapted to be connected to a heat-dissipating and / or heat-distributing element of a luminaire and / or the operating device.
  • the legs can be used to direct the waste heat of the coil core on these heat-dissipating and / or heat-distributing elements directly, so in particular to guide away from heat-sensitive components of the operating device.
  • the legs are preferably connected to a heat-dissipating and / or heat-distributing element of the operating device. This ensures that the heat emitted by the coil core and transferred to the heat conduction structure is conducted only to this heat dissipating and / or heat distributing element.
  • the heat-dissipating and / or heat-distributing element is preferably a heat sink or other large-area component for the release of heat.
  • the waste heat can be emitted in a particularly advantageous manner from the operating device, for example to the ambient air, in order thus to effect efficient cooling.
  • the heat conduction structure may be made of a material comprising metal, preferably copper and / or aluminum. These materials have a particularly high thermal conductivity, so that they are particularly suitable for efficient cooling of the spool core or for the heat conduction by means of the heat conduction structure. Alternatively or additionally, the material (only) consist of (designed for high heat conduction) plastic or have plastic.
  • the heat conduction structure can thus be provided in addition to the cooling of the coil core simultaneously to electrically isolate the coil.
  • the spool core is a ferrite core. Ferrite is particularly advantageously able to conduct the magnetic flux of the coil.
  • the heat-conducting structure has cooling ribs.
  • the heat-conducting structure has an optimized for the heat transfer or for the heat dissipation, so in particular enlarged surface.
  • the cooling fins are preferably provided integrally with the heat-conducting structure or the heat-conducting structure is preferably shaped such that it forms the cooling fins.
  • the cooling ribs are preferably provided on at least one side of the heat conduction structure, which faces away from the spool core, so that the heat of the spool core can be well conducted away from the spool core.
  • the cooling fins are provided distributed on the surface of the heat conduction structure (evenly).
  • cooling ribs are provided on the complete surface of the heat conduction structure, wherein this surface preferably comprises the surface of the heat conduction structure, which faces away from the coil core, and / or comprises the surface of the heat conduction structure, which faces the coil core.
  • the coil may for example be a transformer coil, wherein the coil core is designed as a transformer core.
  • a transformer coil, in particular its transformer core, is known to cause high waste heat due to the conversion of voltage.
  • the aforementioned varnishleit Jardin is therefore particularly advantageous manner to dissipate this waste heat efficiently, ie in particular not to influence the transformer or other components with the waste heat.
  • the transformer core may include a first portion for electromagnetic interaction with a primary winding, a second portion for electromagnetic interaction with a secondary winding, and a third portion for connecting the first portion to the second portion to control the magnetic flux between the first and second portions to lead.
  • the heat conduction structure is then in surface contact with the third section. Since the third portion is exposed from any winding and also has a large heat dissipating surface, the heat conduction structure can be brought into (full) surface contact with this (entire) surface, which contributes to the improvement in the efficiency of heat dissipation and cooling, respectively.
  • the third portion is easily accessible from outside the coil, so that the heat conduction structure can be easily brought into surface contact with the transformer core.
  • the invention further relates to a luminaire, in particular an LED luminaire, comprising a luminous means, preferably an LED, and an operating device as described above for operating the luminous means.
  • the figures described below show an example of two embodiments of a control gear according to the invention 1. It is not the entire operating device recognizable, but for the sake of simplicity, only a schematic section.
  • the operating device 1 is used in a luminaire, in particular in an LED luminaire.
  • a lamp (not shown in detail) can be operated, in particular so that the lamp emits light in a desired manner.
  • Exemplary applications of the operating device 1 are the supply of voltage and / or current, pulse width modulation, the setting of the brightness (in particular dimming) and / or the general control of the lighting means.
  • the operating device 1 has a transformer coil 2 with a transformer core 3, wherein a heat conducting structure 4, 4 'is in surface contact with the transformer core 3 in order to cool the transformer core 3 or those of the transformer core 3 in FIG Operation of the transformer or the transformer coil 2 emitted heat from the transformer core 3 away.
  • the heat conduction structure 4, 4 ' is not limited to a transformer coil 2 with transformer core 3.
  • the heat-conducting structure 4, 4 ' is suitable for any coil with a coil core that is used in an operating device. Examples are power correction (PFC) coils, coils in an LLC converter / converter, power input choke coils, flyback converter coils, or general energy storage coils. The description thus applies analogously to a coil with a coil core.
  • PFC power correction
  • the transformer coil 2 has a transformer core 3 and a transformer body 6.
  • the transformer core 3 is made of ferrite, for example, but may be made of any other material suitable for conducting magnetic flux.
  • the transformer core 2 has a first portion for electromagnetic interaction with a primary winding, and a second portion for electromagnetic interaction with a secondary winding. These are preferably accommodated in the transformer body 6 and thus not visible.
  • the windings cooperating with the transformer core 3 cause the voltage to be converted, in particular from a high voltage on the Primary winding side to a lower voltage on the secondary winding side, the latter is usually provided for operating the lamp with the lower voltage.
  • a third section 3a which connects the first section to the second section, in order to guide the magnetic flux between the first and the second section, is also recognizable.
  • the third section 3a is not provided in the transformer body 6 and thus easily accessible for the heat-conducting structure 4. That is, when placing the heat conduction structure 4 on the transformer coil 2, the heat conduction structure 4 preferably (only) in surface contact with the third section 3a.
  • the operating device 1 can furthermore have a printed circuit board (PCB) 5, wherein the transformer coil 2 with the heat-conducting structure 4, 4 'is provided on a first side or on the front side of the printed circuit board 5.
  • the printed circuit board 5 may in particular have an opening, via which from the back of the circuit board 5 from a terminal 8 of the transformer coil 2 for connecting a lamp and / or a voltage source with the transformer coil 2 is accessible.
  • the transformer coil 2 may have a plurality of pins 9, which preferably pass through the circuit board 9 and electrically connects the transformer coil 2 with electrical and / or electronic components of the circuit board.
  • the heat-conducting structure 4, 4 ' preferably has an embodiment in that the heat-conducting structure 4, 4' removes the heat emitted by the transformer core 3 from the transformer core 3 and the first side or the front side of the printed circuit board 5 to a second side facing away from the first side Side or to the back of the circuit board 5 passes.
  • the waste heat emitted during operation of the transformer coil 2 is advantageously dissipated away from components provided on the first side of the printed circuit board 5, in particular such that the heat given off by the transformer core 3 does not affect these components.
  • the heat-conducting structure 4 has two walls 11, 12 which are each in planar contact with the transformer core 3, preferably with its third section 3a, wherein the transformer core 3 is arranged between the walls 11, 12. Furthermore, it can be seen that this arrangement
  • the heat conduction structure 4 is formed as a hood, which in a plan view and / or at least one side view, preferably in two side views, the transformer coil 2 seen at least the transformer core 3 and preferably the complete transformer coil 2 covers.
  • the heat conduction structure 4 may further comprise a further side wall 13, which at least the transformer core 3 and preferably the transformer coil 2 seen in plan view of the transformer coil 2 covers.
  • the further side wall 13 is preferably provided to be in contact with the transformer body 6.
  • the heat conduction structure 4 thus forms a hood, which is easily placed on the transformer coil 2, so that at the same time the hood, in particular the side walls 11, 12, in planar contact with the transformer core 3, in particular with its third section 3a, arrive.
  • the heat conduction structure 4 is preferably seen in a further side view, preferably in two further side views, of the transformer coil 2 (cf., for example FIG. 2 ), so that at least part of the transformer coil 2, preferably at least the transformer core 3 or the complete transformer coil 2, is not covered or visible by the heat conduction structure 4 through this opening (s).
  • air can flow through these two openings in order to advantageously support the cooling effect, in particular by convective heat transfer.
  • the heat-conducting structure 4 or the hood covers the transformer coil 2 in all side views and in plan view, in order to further increase the surface of the heat-conducting structure 4 for cooling.
  • the transformer coil 2 may further comprise legs 7, which pass through the circuit board 5.
  • the printed circuit board 5 may have a plurality, preferably five, openings through which one of the legs 7 passes.
  • the legs 7 are provided in order to increase the total heat-emitting surface, ie to serve as a heat sink, so that the transformer core 3 is better cooled.
  • the legs 7 can with the bobbin 6, in particular with a portion of the bobbin 6, which rests on the circuit board 5, be connected by means of non-positive and / or positive means such as a clip connection.
  • the legs 7 preferably have such a design that they can be connected to a heat-dissipating and / or heat-distributing element of the luminaire and / or the operating device 1.
  • a heat-dissipating and / or heat-distributing element is an unillustrated heat sink.
  • the heat-dissipating and / or heat-distributing element can also be a metallic core of the printed circuit board 5.
  • the aforementioned element may also be any other large-area component for the release of heat to the ambient air.
  • the free ends of the hood or the distal ends of the walls 11, 12 each have legs as described above, in order to dissipate the waste heat of the transformer core 3. That said for the legs 7 thus applies analogously to the legs of the free ends of the hood.
  • the heat conduction structure 4 may further comprise a mounting portion 14 for mounting or fixing the heat conduction structure 4 in the operating device 1.
  • the mounting portion 14 may have any fastening means which can cause a material, non-positive and / or positive fastening between the heat-conducting structure 4 and transformer core 3, for example a clip connection.
  • the walls 11, 12 are provided such that the transformer core 3 at least comes into force with the walls 11, 12, so the transformer core 3, for example, between the walls 11, 12 is clamped.
  • the free or distal end of the side walls 11, 12, ie those sides of the side walls 11, 12, which are opposite to the circuit board 5, have the mounting portion 14.
  • FIGS. 3 and 4 show by way of example a heat conduction structure 4 'according to a second embodiment.
  • the heat conduction structure 4 ' has two walls 21, 22, which are in surface contact with the transformer core 3, wherein the transformer core 3 is arranged between these walls 21, 22.
  • the heat conduction structure 4 ' differs from the heat conduction structure 4 in particular in that the heat conduction structure 4' has a wall which surrounds at least the transformer core 3 closed. That is, the heat conduction structure 4 'has further, preferably two side walls 23, 24, which connect the side walls 21, 22 together so that the closed surrounding wall results.
  • the further side walls 23, 24 are preferably also in surface contact with the transformer core 3.
  • the heat conduction structure 4 'thus forms a closed wall, which is easily placed on the transformer coil 2, so that at the same time the wall, in particular the side walls 21, 22 and / or the side walls 23, 24, in surface contact with the transformer core 3, in particular with its third section 3a, pass.
  • a substantially rectangular cross-section of the heat-conducting structure 4' results.
  • the heat conduction structure 4 ' is not limited to such a cross section.
  • other cross sections are suitable, which can cause at least a two-dimensional contact with the transformer core 3, so polygonal and / or round cross-sections.
  • the wall of the heat-conducting structure 4 'thus surrounds at least the transformer core 3 closed so that the wall covers the transformer core 3 in each side view of the transformer coil 2.
  • the wall defines an opening through which the transformer coil 2 partially passes. Seen in plan view or looking at the first side of the circuit board 5 is thus at least part of the transformer coil 2, preferably at least the transformer core 3 or the complete transformer coil 2, by the heat conduction structure 4 'is not covered or visible.
  • the heat-conducting structure 4 'or the side walls 21-24 preferably has a height, so that the transformer core 3 is covered in a side view of the transformer coil 2, but a part of the transformer coil, preferably a part of the transformer body 6, protrudes beyond the heat-conducting structure 4' and thus visible.
  • the heat-conducting structure 4' may have a mounting section 14 'corresponding to the mounting section 14.
  • the statements made for the mounting section 14 thus apply analogously to the mounting section 14 'of the heat-conducting structure 4'.
  • the side walls 21, 22 and / or the side walls 23, 24 may be provided such that the transformer core 3 at least comes into frictional connection with these, so the transformer core 3 is preferably clamped between them.
  • the mounting portion 14 ' may have fastening means for material, force, and / or positive fastening with the circuit board 5, for example a clip connection.
  • the heat conduction structure 4 ' preferably the mounting portion or foot of the wall, a plurality, preferably 10 to 40, more preferably 20 to 30, ideally 28 legs 25 for dissipating heat, preferably in the direction of the second side of the circuit board 5, respectively.
  • the legs 25 can be provided corresponding to the (closed) cross-section of the wall on the heat-conducting structure 4 'or on the wall of the heat-conducting structure 4'.
  • the circuit board 5 may have a plurality of openings through which each one of the legs 25 passes, so that the legs 25 protrude from the second side.
  • the legs 25 can also be used for mounting or fastening the heat-conducting structure 4 'on the printed circuit board 5, for example by the legs 25 each being in positive and / or non-positive connection with the respective opening of the printed circuit board 5.
  • the legs 25 may each be designed to be connected to a heat-dissipating and / or heat-distributing element of a luminaire and / or the operating device 1.
  • the heat-dissipating and / or heat-distributing element is for example a non-illustrated heat sink.
  • the heat-dissipating and / or heat-distributing element can also be a metallic core of the printed circuit board 5.
  • the heat-dissipating and / or heat-distributing element can also be any other large-area component which is suitable for the release of heat to the ambient air.
  • the legs 25 need not necessarily pass through the circuit board 5.
  • the legs 25 are in particular provided to conduct heat in an advantageous manner, in particular in the direction of a heat sink. Thus, it is to be prevented that other components, which are provided for example on the first side of the circuit board 5, are affected.
  • the legs 25 in particular the heat-emitting surface is increased in total.
  • the legs 25 also serve as additional heat sink to better cool the transformer core 3.
  • the heat-conducting structure 4, 4 ' is preferably made of a material which is good heat-conducting.
  • a material which is good heat-conducting for this purpose, in particular metal, preferably copper and / or aluminum.
  • the material alternatively or additionally comprises plastic or (only) made of plastic, so as to effect, for example, an electrical insulation transformer coil 2.
  • the heat-conducting structure 4, 4 ' is formed as a unit with the coil core or transformer core 3.
  • the heat conduction structure 4, 4 ' may further comprise cooling fins not shown in detail.
  • the cooling ribs are preferably provided on at least one side of the heat-conducting structure 4, 4 ', which faces away from the coil core or transformer core 3, that is, for example, on the outside of one or more, preferably each of the walls 11-13 or 21-24.
  • the cooling fins are provided on the surface or walls 11-13 and 21-24 of the heat-conducting structure 4, 4 'distributed (evenly).
  • the cooling ribs are provided on the complete surface of the heat-conducting structure 4, 4 ', this surface preferably comprising the surface of the heat-conducting structure 4, 4', which faces away from the coil core, ie in particular the outside of one or more, preferably each the walls 11-13 or 21-24, and / or the surface of the shallleit Quilt 4, 4 ', which faces the bobbin, ie in particular directed to the bobbin (inside) side of one or more, preferably each of the walls 11- 13 or 21-24.
  • the invention is not limited to the embodiments described above. In particular, all features can be combined with each other in any advantageous manner.
  • the legs 25 provided according to the second embodiment may also be provided in a corresponding manner on the heat-conducting structure 4.
  • the heat-conducting structure 4 instead of the side walls 11, 12, the closed surrounding wall or the side walls 21-24 of the bathleit Quilt 4 'has.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
EP19176075.0A 2018-06-07 2019-05-23 Appareil de fonctionnement pourvu de structure thermoconductrice Pending EP3578880A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202018103181.3U DE202018103181U1 (de) 2018-06-07 2018-06-07 Betriebsgerät mit Wärmeleitstruktur

Publications (1)

Publication Number Publication Date
EP3578880A1 true EP3578880A1 (fr) 2019-12-11

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ID=66676203

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19176075.0A Pending EP3578880A1 (fr) 2018-06-07 2019-05-23 Appareil de fonctionnement pourvu de structure thermoconductrice

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Country Link
EP (1) EP3578880A1 (fr)
AT (1) AT17783U1 (fr)
DE (1) DE202018103181U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021202286A1 (de) 2021-03-09 2022-09-15 Robert Bosch Gesellschaft mit beschränkter Haftung Batteriemodulelement, Verfahren zur Herstellung eines solchen und Batteriemodul

Citations (8)

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