EP2863143A1 - Heating device - Google Patents

Heating device Download PDF

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Publication number
EP2863143A1
EP2863143A1 EP20130290250 EP13290250A EP2863143A1 EP 2863143 A1 EP2863143 A1 EP 2863143A1 EP 20130290250 EP20130290250 EP 20130290250 EP 13290250 A EP13290250 A EP 13290250A EP 2863143 A1 EP2863143 A1 EP 2863143A1
Authority
EP
European Patent Office
Prior art keywords
heating
circuit board
heating device
heating element
control circuit
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.)
Granted
Application number
EP20130290250
Other languages
German (de)
French (fr)
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EP2863143B1 (en
Inventor
Jean-Philippe Gries
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.)
Mahle Behr France Rouffach SAS
Original Assignee
Mahle Behr France Rouffach SAS
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 Mahle Behr France Rouffach SAS filed Critical Mahle Behr France Rouffach SAS
Priority to EP13290250.3A priority Critical patent/EP2863143B1/en
Priority to US14/519,820 priority patent/US9937772B2/en
Publication of EP2863143A1 publication Critical patent/EP2863143A1/en
Application granted granted Critical
Publication of EP2863143B1 publication Critical patent/EP2863143B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • F24H3/0429—For vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • F24H3/0429—For vehicles
    • F24H3/0435—Structures comprising heat spreading elements in the form of fins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • F24H3/0429—For vehicles
    • F24H3/0441—Interfaces between the electrodes of a resistive heating element and the power supply means
    • 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
    • H05B1/00—Details of electric heating devices
    • H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H05B1/0227—Applications
    • H05B1/023—Industrial applications
    • H05B1/0236—Industrial applications for vehicles
    • 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
    • H05B3/00—Ohmic-resistance heating
    • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
    • H05B3/22—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible
    • H05B3/24—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor being self-supporting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H2250/00—Electrical heat generating means
    • F24H2250/04—Positive or negative temperature coefficients, e.g. PTC, NTC
    • 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
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/022—Heaters specially adapted for heating gaseous material
    • H05B2203/023—Heaters of the type used for electrically heating the air blown in a vehicle compartment by the vehicle heating system

Definitions

  • the invention relates to a heating device, in particular for a motor vehicle.
  • Heaters in particular electric heaters are widely used in motor vehicles.
  • the internal air of a passenger compartment of the motor vehicle, the heating, in particular preheating of cooling water in water-cooled internal combustion engines or the heating of fuel at cold outside temperatures are typical applications of the electric heater.
  • the heater is also used as additional heating.
  • the heating device typically includes one or more heating elements and a control device for controlling and regulating the heating device.
  • the heating elements are typically formed as an electric heating resistor, in particular as a PTC element (Positive Temperature Coefficient, P ositive T emperature C oefficent).
  • the heating elements and the control device may be separate units be formed, which are connected by lines. However, it is also known to arrange the heating elements and the control device in a structural unit, in particular in a frame in order to make the connecting lines as short as possible.
  • an electric booster heater for motor vehicles which has a heating block consisting of a plurality of layered or stacked heating elements, which are designed as resistance heating elements, and which are arranged in a frame.
  • the auxiliary heater has a control device which is arranged on a circuit board, which is arranged perpendicular to a frame plane after assembly.
  • the additional heater is powered by two connecting bolts with electricity, which preferably protrude laterally from the control device.
  • the WO 03/086018 A1 discloses an electric heater, in particular for a heater or for a vehicle air conditioning system in a motor vehicle.
  • the heater has a housing and at least one resistance heating element disposed in the housing.
  • a control circuit which controls the electrical power supply to the heating elements is typically connected to a power source by means of a plug connection.
  • the heating device which can be used in particular in a motor vehicle, has at least one heating element for heating the air passing through it and a control device which has a control circuit arranged on a printed circuit board for controlling the heating elements, wherein the at least one Heating element having fins and a contact strip, wherein a contact band portion is disposed on the circuit board of the control circuit and forms a connection between the at least one heating element and the control circuit.
  • the contact band portion or the contact band is formed as a flat sheet.
  • the heating element is preferably designed as a PTC element.
  • the contact band of the heating element By arranging the contact band of the heating element, cooling by means of a PTC connection can be realized. It is advantageous that the heating element, in particular the PTC element, is connected directly to the control device of the heating device. As a result, the "hot spots" known and undesirable in the prior art can be at least reduced or avoided at the connection between the control circuit and the heating element.
  • the contact band which is normally used completely in its entire length as a heating element in the heating element, can be used with the design according to the invention as a cooling element. It is advantageous that the known per se and in use heating elements, in particular their contact strips can be used. There is no need for a new geometric redesign.
  • the contact band in particular the contact band portion, can preferably be connected to a connector in clip technique and thus fixed on the circuit board.
  • the heating device can preferably be used in a standard network of a motor vehicle with an internal combustion engine, in a hybrid vehicle and / or in an electrically operated motor vehicle.
  • the contact band section is releasably connected to the circuit board.
  • a connector is arranged on the circuit board, by means of which a fixation and / or contacting of the contact band portion on the circuit board can be realized.
  • the new compound preferably allows easy and good heat distribution.
  • the length of the contact band portion is greater than a quarter of the width or formed as half the width of the circuit board.
  • the length of the contact band portion may in this case preferably be adapted to the position of the electronic components of the control device.
  • the circuit board of the control circuit and / or the at least one heating element at least partially or partially arranged in a housing.
  • the housing may preferably be a plastic housing.
  • control circuit can be cooled by means of the contact band section.
  • the contact band section is arranged within the housing of the heating device or the control device.
  • the contact band section is arranged outside the housing.
  • the fins of the heating element are arranged on the circuit board in order to realize a cooling for electronic components of the control circuit can.
  • These can be, for example, MOSFET devices.
  • the components of the heating element can be optimally utilized.
  • the at least one heating element is a first heating element and the heating device has further heating elements.
  • the heating elements are arranged parallel to each other.
  • connection between contact band and circuit board is easy to design and practical in the assembly.
  • standardized components can be used, for example, as a contact band, heating element, printed circuit board and / or connector.
  • the connection can also be used to save space.
  • FIGS. 1 to 6 are identical parts or parts with the same or similar function denoted by the same reference numerals.
  • FIG. 1 shows a schematic perspective view of a first embodiment of a heating device 10 according to the invention with a heating element 12.
  • the heating element 12 is preferably designed as a PTC heating element 12.
  • the heating element 12 has fins 14.
  • the fins 14 are arranged on a formed as a sheet metal contact strip 16, hereinafter also referred to as a sheet, which is arranged at its first end 18 on a printed circuit board 20.
  • the arranged on the circuit board 20 portion of the contact strip is referred to as a contact band portion.
  • the contact strip 16 acts as a cooling plate for electronic components, which are arranged on the circuit board.
  • a second end 19 of the contact strip 16 is disposed away from the printed circuit board 20.
  • the contact strip 16 is preferably formed as a sheet-metal strip.
  • the printed circuit board 20 is part of a control device 22 having a control circuit 24, of which only two MOSFETs 26 (metal oxide semiconductor field effect transistor) are shown by way of example.
  • the contact strip 16 is held in a arranged on the circuit board 20 and preferably fastened connector 28.
  • the connector 28 is preferably soldered to, soldered to, the printed circuit board 20.
  • the arranged on the circuit board 20 contact strip 16 has a contact band portion or sheet metal portion 30 of a defined length 32.
  • the contact strip 16 can realize the cooling of the printed circuit board 20 with the sheet metal section 30 in general and in particular the electronic components of the control circuit 24 arranged on the printed circuit board 20.
  • each of the heating elements 12 is arranged on a separate contact strip 16, which is arranged with the sheet metal section 30 on the printed circuit board 20.
  • pads 34 are arranged for attachment or fixation of the connector 28.
  • the pads 34 may be configured depending on the area, thickness of a coating on the printed circuit board 20 and configuration of the pins 36 of the connector 28.
  • FIG. 2 shows a schematic, perspective view of another embodiment of the heating device 10.
  • the embodiments of FIG. 1 and FIG. 2 differ in the position of the connector 28 on the circuit board 20.
  • the pads 34 and the connectors 28 arranged thereon are arranged approximately centrally on the printed circuit board 20.
  • a rectangle 38 represents the boundary 39 between a region 40 arranged inside the heating device 10 and a region 42 arranged outside the heating device 10.
  • the rectangle 38 hereby symbolizes a part of a housing, not shown, in which the control device 22 of the heating device 10 is arranged.
  • FIG. 3 shows the heating device 10 with five heating elements 12, of which only the fins 14 are shown.
  • the fins 14 have a zigzag shape and are preferably bent from a sheet into the zigzag shape.
  • the fins 14 are each arranged on the contact strip 16.
  • the contact strips 16 have the respective sheet metal section 30, which is arranged in each case on the printed circuit board 20.
  • the respective first end 18 of the sheet metal section 30 is arranged in the associated connector 28.
  • the connectors 28 are disposed within the housing 46.
  • FIG. 4 shows the heater 10 in a schematic representation as a plan view.
  • the connectors 28 and the sheet metal sections 30 are arranged outside the housing 46.
  • FIG. 5 shows the heater 10 in a schematic representation as a side view.
  • the connectors 28 are disposed outside of the housing 46.
  • the contact strip 16 and the sheet metal section 30 shown are each also disposed outside of the housing 46.
  • FIG. 6 shows a further embodiment of the heating device 10 in which, in contrast to the previous embodiments, the fins 14 and the contact strip 16 are arranged completely up to the connection point of the respective contact strip 16 and the Blechabschnifts 30 with the associated connector 28.
  • the connectors 28 and the sheet-metal section 30 are located outside the housing 46.
  • the slats 14 can realize a cooling function for the control circuit 24 arranged on the printed circuit board 20 or partial sections thereof.
  • the contact strip 16 and the sheet metal section 30 are preferably made of an aluminum or an aluminum alloy.
  • the entire length 48 of the heating element 12 is composed of the length 32, which is located within the heater 10 and a length 50 of the contact strip 16.
  • the fins 14 of the heating element 12 are arranged over the length 50.

Abstract

Die Erfindung betrifft eine Heizvorrichtung, insbesondere für ein Kraftfahrzeug mit mindestens einem Heizelement (12) zum Erwärmen von Luft und einer Steuervorrichtung (22), die eine auf einer Leiterplatte (20) angeordnete Steuerschaltung (24) zum Ansteuern des mindestens einen Heizelementes (12) aufweist, wobei das mindestens eine Heizelement (12) Lamellen (14) und ein Kontaktband (16) aufweisen, wobei ein Kontaktbandabschnitt (30) auf der Leiterplatte (20) der Steuerschaltung (24) angeordnet ist und eine Verbindung zwischen dem mindestens einen Heizelement (12) und der Steuerschaltung (24) ausbildet.The invention relates to a heating device, in particular for a motor vehicle, having at least one heating element (12) for heating air and a control device (22) having a control circuit (24) arranged on a printed circuit board (20) for activating the at least one heating element (12). wherein the at least one heating element (12) has fins (14) and a contact strip (16), wherein a contact strip section (30) is arranged on the circuit board (20) of the control circuit (24) and a connection between the at least one heating element ( 12) and the control circuit (24) is formed.

Description

Technisches GebietTechnical area

Die Erfindung betrifft eine Heizvorrichtung, insbesondere für ein Kraftfahrzeug.The invention relates to a heating device, in particular for a motor vehicle.

Stand der TechnikState of the art

Heizvorrichtungen, insbesondere elektrische Heizvorrichtungen werden in Kraftfahrzeugen vielfällig eingesetzt. Die Innenluft eines Fahrgastraumes des Kraftfahrzeugs, das Heizen, insbesondere Vorheizen von Kühlwasser bei wassergekühlten Verbrennungsmotoren oder die Erwärmung von Kraftstoff bei kalten Außentemperaturen sind typische Einsatzbereiche der elektrischen Heizvorrichtung. Oftmals wird die Heizvorrichtung auch als Zusatzheizung verwendet. Die Heizvorrichtung weist typischerweise ein oder mehrere Heizelemente und eine Steuervorrichtung zum Steuern und Regeln der Heizvorrichtung. Die Heizelemente sind in der Regel als elektrischer Heizwiderstand, insbesondere als PTC-Element (Positiver Temperaturkoeffizient, Positive Temperature Coefficent) ausgebildet. Die Heizelemente und die Steuereinrichtung können als getrennte Einheiten ausgebildet sein, die mittels Leitungen verbunden sind. Es ist aber auch bekannt, die Heizelemente und die Steuereinrichtung in einer baulichen Einheit, insbesondere in einem Rahmen anzuordnen, um die Verbindungsleitungen möglichst kurz zu gestalten.Heaters, in particular electric heaters are widely used in motor vehicles. The internal air of a passenger compartment of the motor vehicle, the heating, in particular preheating of cooling water in water-cooled internal combustion engines or the heating of fuel at cold outside temperatures are typical applications of the electric heater. Often, the heater is also used as additional heating. The heating device typically includes one or more heating elements and a control device for controlling and regulating the heating device. The heating elements are typically formed as an electric heating resistor, in particular as a PTC element (Positive Temperature Coefficient, P ositive T emperature C oefficent). The heating elements and the control device may be separate units be formed, which are connected by lines. However, it is also known to arrange the heating elements and the control device in a structural unit, in particular in a frame in order to make the connecting lines as short as possible.

Aus der EP 1 157 869 ist eine elektrische Zusatzheizung für Kraftfahrzeuge bekannt, die einen Heizblock aufweist, der aus einer Mehrzahl von geschichteten oder gestapelten Heizelementen besteht, die als Widerstandsheizelemente ausgebildet sind, und die in einem Rahmen angeordnet sind. Die Zusatzheizung weist eine Steuereinrichtung auf, die auf einer Platine angeordnet ist, die senkrecht zu einer Rahmenebene nach dem Zusammenmontieren angeordnet ist. Die Zusatzheizung wird über zwei Anschlussbolzen mit Strom versorgt, die bevorzugt seitlich aus der Steuereinrichtung herausragen.From the EP 1 157 869 For example, an electric booster heater for motor vehicles is known, which has a heating block consisting of a plurality of layered or stacked heating elements, which are designed as resistance heating elements, and which are arranged in a frame. The auxiliary heater has a control device which is arranged on a circuit board, which is arranged perpendicular to a frame plane after assembly. The additional heater is powered by two connecting bolts with electricity, which preferably protrude laterally from the control device.

Die WO 03/086018 A1 offenbart eine elektrische Heizvorrichtung insbesondere für eine Heizung oder für eine Fahrzeugklimaanlage in einem Kraftfahrzeug. Die Heizvorrichtung weist ein Gehäuse und mindestens ein Widerstands-Heizelement, das in dem Gehäuse angeordnet ist, auf. Eine Steuerschaltung, die die elektrische Stromversorgung für die Heizelemente steuert, ist typischerweise mit einer Strom-/Spannungsquelle mittels einer Steckverbindung verbunden.The WO 03/086018 A1 discloses an electric heater, in particular for a heater or for a vehicle air conditioning system in a motor vehicle. The heater has a housing and at least one resistance heating element disposed in the housing. A control circuit which controls the electrical power supply to the heating elements is typically connected to a power source by means of a plug connection.

Darstellung der Erfindung, Aufgabe, Lösung, VorteilePresentation of the invention, object, solution, advantages

Es ist die Aufgabe der Erfindung, eine verbesserte Heizvorrichtung zu schaffen.It is the object of the invention to provide an improved heating device.

Dies wird erreicht mit einer Heizvorrichtung mit den Merkmalen von Anspruch 1.This is achieved with a heating device having the features of claim 1.

In einem bevorzugten Ausführungsbeispiel der Erfindung weist die Heizvorrichtung, die insbesondere in einem Kraftfahrzeug einsetzbar ist, mindestens ein Heizelement zum Erwärmen der durch dieses hindurchtretenden Luft und eine Steuervorrichtung auf, die eine auf einer Leiterplatte angeordnete Steuerschaltung zum Ansteuern der Heizelemente aufweist, wobei das mindestens eine Heizelement Lamellen und ein Kontaktband aufweist, wobei ein Kontaktbandabschnitt auf der Leiterplatte der Steuerschaltung angeordnet ist und eine Verbindung zwischen dem mindestens einen Heizelement und der Steuerschaltung ausbildet.In a preferred embodiment of the invention, the heating device, which can be used in particular in a motor vehicle, has at least one heating element for heating the air passing through it and a control device which has a control circuit arranged on a printed circuit board for controlling the heating elements, wherein the at least one Heating element having fins and a contact strip, wherein a contact band portion is disposed on the circuit board of the control circuit and forms a connection between the at least one heating element and the control circuit.

Bevorzugt ist der Kontaktbandabschnitt oder das Kontaktband als flächiges Blech ausgebildet. Das Heizelement ist bevorzugt als PTC-Element ausgebildet. Durch die Anordnung des Kontaktbandes des Heizelementes kann eine Kühlung mittels einer PTC-Verbindung realisiert werden. Hierbei ist vorteilhaft, dass das Heizelement, insbesondere das PTC-Element, direkt mit der Steuervorrichtung der Heizvorrichtung verbunden ist. Hierdurch können die im Stand der Technik bekannten und nicht erwünschten "hot spots" an der Verbindung zwischen der Steuerschaltung und dem Heizelement zumindest reduziert oder vermieden werden. Das Kontaktband, das normalerweise komplett in seiner gesamten Länge als Heizung beim Heizelement verwendet wird, kann mit dem erfindungsgemäßen Design als Kühlelement eingesetzt werden. Hierbei ist von Vorteil, dass die an sich bekannten und im Einsatz befindlichen Heizelemente, insbesondere deren Kontaktbänder verwendet werden können. Es muss keine neue geometrische Neukonstruktion erfolgen.Preferably, the contact band portion or the contact band is formed as a flat sheet. The heating element is preferably designed as a PTC element. By arranging the contact band of the heating element, cooling by means of a PTC connection can be realized. It is advantageous that the heating element, in particular the PTC element, is connected directly to the control device of the heating device. As a result, the "hot spots" known and undesirable in the prior art can be at least reduced or avoided at the connection between the control circuit and the heating element. The contact band, which is normally used completely in its entire length as a heating element in the heating element, can be used with the design according to the invention as a cooling element. It is advantageous that the known per se and in use heating elements, in particular their contact strips can be used. There is no need for a new geometric redesign.

Das Kontaktband, insbesondere der Kontaktbandabschnitt, kann bevorzugt mit einem Verbinder in Klipstechnik verbunden werden und so auf der Leiterplatte fixiert werden.The contact band, in particular the contact band portion, can preferably be connected to a connector in clip technique and thus fixed on the circuit board.

Die Heizvorrichtung kann bevorzugt in einem Standard-Netzwerk eines Kraftfahrzeuges mit einem Verbrennungsmotor, in einem Hybridfahrzeug und/oder in einem elektrisch betriebenen Kraftfahrzeug eingesetzt werden.The heating device can preferably be used in a standard network of a motor vehicle with an internal combustion engine, in a hybrid vehicle and / or in an electrically operated motor vehicle.

In einer bevorzugten Ausführungsform der Heizvorrichtung ist der Kontaktbandabschnitt mit der Leiterplatte lösbar verbunden.In a preferred embodiment of the heating device, the contact band section is releasably connected to the circuit board.

Bevorzugt ist auf der Leiterplatte ein Verbinder angeordnet, mittels dem eine Fixierung und/oder Kontaktierung des Kontaktbandabschnittes auf der Leiterplatte realisierbar ist. Die neue Verbindung erlaubt bevorzugt eine leichte und gute Wärmeverteilung.Preferably, a connector is arranged on the circuit board, by means of which a fixation and / or contacting of the contact band portion on the circuit board can be realized. The new compound preferably allows easy and good heat distribution.

In einer weiteren Ausgestaltung der Heizvorrichtung ist die Länge des Kontaktbandabschnittes größer als ein Viertel der Breite oder als die halbe Breite der Leiterplatte ausgebildet. Die Länge des Kontaktbandabschnittes kann hierbei bevorzugt der Position der elektronischen Bauteile der Steuervorrichtung angepasst werden.In a further embodiment of the heating device, the length of the contact band portion is greater than a quarter of the width or formed as half the width of the circuit board. The length of the contact band portion may in this case preferably be adapted to the position of the electronic components of the control device.

Bevorzugt ist und die Leiterplatte der Steuerschaltung und/oder das mindestens eine Heizelement zumindest abschnittsweise oder bereichsweise in einem Gehäuse angeordnet. Das Gehäuse kann bevorzugt ein Kunststoffgehäuse sein.Preferably, and the circuit board of the control circuit and / or the at least one heating element at least partially or partially arranged in a housing. The housing may preferably be a plastic housing.

Bevorzugt sind elektronische Bauteile der Steuerschaltung mittels des Kontaktbandabschnitts kühlbar.Preferably, electronic components of the control circuit can be cooled by means of the contact band section.

In einer weiteren Ausgestaltung der Heizvorrichtung ist der Kontaktbandabschnitt innerhalb des Gehäuses der Heizvorrichtung oder der Steuervorrichtung angeordnet.In a further embodiment of the heating device, the contact band section is arranged within the housing of the heating device or the control device.

In einer weiteren bevorzugten Ausgestaltung der Heizvorrichtung ist der Kontaktbandabschnitt außerhalb des Gehäuses angeordnet.In a further preferred embodiment of the heating device, the contact band section is arranged outside the housing.

Bevorzugt sind die Lamellen des Heizelementes auf der Leiterplatte angeordnet, um eine Kühlung für Elektronikbausteine der Steuerschaltung realisieren zu können. Diese können beispielweise MOSFET-Bausteine sein. Hierdurch können die Komponenten des Heizelementes optimal ausgenutzt werden.Preferably, the fins of the heating element are arranged on the circuit board in order to realize a cooling for electronic components of the control circuit can. These can be, for example, MOSFET devices. As a result, the components of the heating element can be optimally utilized.

Bevorzugt ist das mindestens eine Heizelement ein erstes Heizelement und die Heizvorrichtung weist weitere Heizelemente auf. Bevorzugt sind die Heizelemente parallel zueinander angeordnet.Preferably, the at least one heating element is a first heating element and the heating device has further heating elements. Preferably, the heating elements are arranged parallel to each other.

Insgesamt ergibt sich der Vorteil, dass keine separaten Kühleinrichtungen für die Steuervorrichtung eingesetzt werden müssen. Die Verbindung zwischen Kontaktband und Leiterplatte ist einfach gestaltbar und praktisch in der Montage. Außerdem können standardisierte Bauelemente verwendet werden beispielsweise als Kontaktband, Heizelement, Leiterplatine und/oder Verbinder. Die Verbindung kann zudem platzsparend eingesetzt werden. Ferner kann es ermöglicht sein, eine feste Verbindung zu schaffen, mit der die Verbinder mit der Leiterplatte zusammen umspritzt sind.Overall, there is the advantage that no separate cooling devices must be used for the control device. The connection between contact band and circuit board is easy to design and practical in the assembly. In addition, standardized components can be used, for example, as a contact band, heating element, printed circuit board and / or connector. The connection can also be used to save space. Furthermore, it may be possible to provide a fixed connection with which the connectors are molded together with the circuit board.

Weitere vorteilhafte Ausgestaltungen sind durch die nachfolgende Figurenbeschreibung und durch die Unteransprüche beschrieben.Further advantageous embodiments are described by the following description of the figures and by the subclaims.

Kurze Beschreibung der ZeichnungenBrief description of the drawings

Nachstehend wird die Erfindung auf der Grundlage zumindest eines Ausführungsbeispiels anhand der Figuren der Zeichnung näher erläutert. Es zeigen:

Fig. 1
ein erstes Ausführungsbeispiel einer Heizvorrichtung mit einem Kontaktband;
Fig. 2
ein weiteres Ausführungsbeispiel der Heizvorrichtung mit dem Kontaktband;
Fig. 3
die Heizvorrichtung in Draufsicht mit dem Kontaktband innerhalb eines Gehäuses einer Steuervorrichtung;
Fig. 4
die Heizvorrichtung in Draufsicht mit dem Kontaktband außerhalb des Gehäuses der Steuervorrichtung;
Fig. 5
die Heizvorrichtung von Figur 4 in Seitenansicht;
Fig. 6
ein weiteres Ausführungsbeispiel der Heizvorrichtung in Draufsicht.
The invention will be explained in more detail on the basis of at least one embodiment with reference to the figures of the drawing. Show it:
Fig. 1
a first embodiment of a heating device with a contact strip;
Fig. 2
a further embodiment of the heating device with the contact strip;
Fig. 3
the heating device in plan view with the contact strip within a housing of a control device;
Fig. 4
the heating device in plan view with the contact band outside the housing of the control device;
Fig. 5
the heater of FIG. 4 in side view;
Fig. 6
a further embodiment of the heater in plan view.

Bevorzugte Ausführung der ErfindungPreferred embodiment of the invention

In den Figuren 1 bis 6 sind identische Teile oder Teile mit gleicher oder ähnlicher Funktion mit denselben Bezugszeichen bezeichnet.In the FIGS. 1 to 6 are identical parts or parts with the same or similar function denoted by the same reference numerals.

Die Figur 1 zeigt in schematischer perspektivischer Darstellung ein erstes Ausführungsbeispiel einer erfindungsgemäßen Heizvorrichtung 10 mit einem Heizelement 12. Das Heizelement 12 ist bevorzugt als PTC-Heizelement 12 ausgebildet. Das Heizelement 12 weist Lamellen 14 auf. Die Lamellen 14 sind auf einem als Blech ausgebildetem Kontaktband 16 angeordnet, im Folgenden auch als Blech bezeichnet, welches an seinem ersten Ende 18 auf einer Leiterplatte 20 angeordnet ist. Der auf der Leiterplatte 20 angeordnete Abschnitt des Kontaktbandes wird als Kontaktbandabschnitt bezeichnet. Das Kontaktband 16 fungiert als Kühlblech für elektronische Bauteile, die auf der Leiterplatte angeordnet sind. Ein zweites Ende 19 des Kontaktbands 16 ist entfernt von der Leiterplatte 20 angeordnet. Das Kontaktband 16 ist bevorzugt als flächiges Blechband ausgebildet.The FIG. 1 shows a schematic perspective view of a first embodiment of a heating device 10 according to the invention with a heating element 12. The heating element 12 is preferably designed as a PTC heating element 12. The heating element 12 has fins 14. The fins 14 are arranged on a formed as a sheet metal contact strip 16, hereinafter also referred to as a sheet, which is arranged at its first end 18 on a printed circuit board 20. The arranged on the circuit board 20 portion of the contact strip is referred to as a contact band portion. The contact strip 16 acts as a cooling plate for electronic components, which are arranged on the circuit board. A second end 19 of the contact strip 16 is disposed away from the printed circuit board 20. The contact strip 16 is preferably formed as a sheet-metal strip.

Die Leiterplatte 20 ist Teil einer Steuervorrichtung 22 mit einer Steuerschaltung 24, von der lediglich beispielhaft zwei MOSFETs 26 (Metall-Oxid-Halbleiter-Feldeffekttransistor) gezeigt sind. Das Kontaktband 16 ist in einem auf der Leiterplatte 20 angeordneten und bevorzugt befestigten Verbinder 28 gehaltert. Der Verbinder 28 ist bevorzugt mit der Leiterplatte 20 verlötet, bzw. auf dies gelötet.The printed circuit board 20 is part of a control device 22 having a control circuit 24, of which only two MOSFETs 26 (metal oxide semiconductor field effect transistor) are shown by way of example. The contact strip 16 is held in a arranged on the circuit board 20 and preferably fastened connector 28. The connector 28 is preferably soldered to, soldered to, the printed circuit board 20.

Das auf der Leiterplatte 20 angeordnete Kontaktband 16 weist einen Kontaktbandabschnitt oder Blechabschnitt 30 einer definierten Länge 32 auf. Das Kontaktband 16 kann mit dem Blechabschnitt 30 die Kühlung der Leiterplatte 20 allgemein und insbesondere der auf der Leiterplatte 20 angeordneten elektronischen Bauteile der Steuerschaltung 24 realisieren.The arranged on the circuit board 20 contact strip 16 has a contact band portion or sheet metal portion 30 of a defined length 32. The contact strip 16 can realize the cooling of the printed circuit board 20 with the sheet metal section 30 in general and in particular the electronic components of the control circuit 24 arranged on the printed circuit board 20.

In der Heizvorrichtung 10 von Figur 1 ist lediglich ein Heizelement 12 gezeigt, wobei das Heizelement 12 ein erstes Heizelement 12 ist und weitere Heizelemente 12 in der Heizvorrichtung 10 angeordnet sein können. Bevorzugt ist jedes der Heizelemente 12 auf einem separaten Kontaktband 16 angeordnet, welches mit dem Blechabschnitt 30 auf der Leiterplatte 20 angeordnet ist.In the heater 10 of FIG. 1 only one heating element 12 is shown, wherein the heating element 12 is a first heating element 12 and further heating elements 12 may be arranged in the heating device 10. Preferably, each of the heating elements 12 is arranged on a separate contact strip 16, which is arranged with the sheet metal section 30 on the printed circuit board 20.

Auf der Leiterplatte 20 sind zur Befestigung oder Fixierung der Verbinder 28 sogenannte Pads 34 angeordnet. Die Pads 34 können je nach Fläche, Dicke einer Beschichtung auf der Leiterplatte 20 und Ausgestaltung der Pins 36 des Verbinders 28 ausgestaltet sein.On the circuit board 20 so-called pads 34 are arranged for attachment or fixation of the connector 28. The pads 34 may be configured depending on the area, thickness of a coating on the printed circuit board 20 and configuration of the pins 36 of the connector 28.

Figur 2 zeigt in schematischer, perspektivischer Darstellung ein weiteres Ausführungsbeispiel der Heizvorrichtung 10. Die Ausführungsformen von Figur 1 und Figur 2 unterscheiden sich in der Position der Verbinder 28 auf der Leiterplatte 20. In dem in Figur 2 gezeigten Ausführungsbeispiel sind die Pads 34 und die darauf angeordneten Verbinder 28 in etwa mittig auf der Leiterplatte 20 angeordnet. Ein Rechteck 38 stellt die Grenze 39 zwischen eines innerhalb der Heizvorrichtung 10 angeordneten Bereichs 40 und eines außerhalb der Heizvorrichtung 10 angeordneten Bereichs 42 dar. Das Rechteck 38 symbolisiert hierbei einen Teil eines nicht dargestellten Gehäuses in dem die Steuervorrichtung 22 der Heizvorrichtung 10 angeordnet ist. FIG. 2 shows a schematic, perspective view of another embodiment of the heating device 10. The embodiments of FIG. 1 and FIG. 2 differ in the position of the connector 28 on the circuit board 20. In the in FIG. 2 In the exemplary embodiment shown, the pads 34 and the connectors 28 arranged thereon are arranged approximately centrally on the printed circuit board 20. A rectangle 38 represents the boundary 39 between a region 40 arranged inside the heating device 10 and a region 42 arranged outside the heating device 10. The rectangle 38 hereby symbolizes a part of a housing, not shown, in which the control device 22 of the heating device 10 is arranged.

Figur 3 zeigt die Heizvorrichtung 10 mit fünf Heizelementen 12, von denen lediglich die Lamellen 14 gezeigt sind. Die Lamellen 14 weisen eine Zickzack-Form auf und sind bevorzugt aus einem Blech in die Zickzack-Form gebogen. FIG. 3 shows the heating device 10 with five heating elements 12, of which only the fins 14 are shown. The fins 14 have a zigzag shape and are preferably bent from a sheet into the zigzag shape.

Die Lamellen 14 sind jeweils auf dem Kontaktband 16 angeordnet. Die Kontaktbänder 16 weisen den jeweiligen Blechabschnitt 30 auf, der jeweils auf der Leiterplatte 20 angeordnet ist. Das jeweilige erste Ende 18 des Blechabschnitts 30 ist in dem diesem zugeordneten Verbinder 28 angeordnet. Die Verbinder 28 sind innerhalb des Gehäuses 46 angeordnet.The fins 14 are each arranged on the contact strip 16. The contact strips 16 have the respective sheet metal section 30, which is arranged in each case on the printed circuit board 20. The respective first end 18 of the sheet metal section 30 is arranged in the associated connector 28. The connectors 28 are disposed within the housing 46.

Figur 4 zeigt die Heizvorrichtung 10 in schematischer Darstellung als Draufsicht. Die Verbinder 28 und die Blechabschnitte 30 sind außerhalb des Gehäuses 46 angeordnet. FIG. 4 shows the heater 10 in a schematic representation as a plan view. The connectors 28 and the sheet metal sections 30 are arranged outside the housing 46.

Figur 5 zeigt die Heizvorrichtung 10 in einer schematischen Darstellung als Seitenansicht. Die Verbinder 28 sind außerhalb des Gehäuses 46 angeordnet. Das Kontaktband 16 und der gezeigte Blechabschnitt 30 sind jeweils ebenfalls außerhalb des Gehäuses 46 angeordnet. FIG. 5 shows the heater 10 in a schematic representation as a side view. The connectors 28 are disposed outside of the housing 46. The contact strip 16 and the sheet metal section 30 shown are each also disposed outside of the housing 46.

Figur 6 zeigt eine weitere Ausführungsform der Heizvorrichtung 10 bei der im Unterschied zu den vorherigen Ausführungsformen die Lamellen 14 und das Kontaktband 16 komplett bis zu dem Verbindungspunkt des jeweiligen Kontaktbands 16 und des Blechabschnifts 30 mit dem zugeordneten Verbinder 28 angeordnet sind. Die Verbinder 28 und der Blechabschnitt 30 liegen außerhalb des Gehäuses 46. Hierbei können die Lamellen 14 eine Kühlfunktion für die auf der Leiterplatte 20 angeordnete Steuerschaltung 24 oder Teilabschnitte dieser realisieren. FIG. 6 shows a further embodiment of the heating device 10 in which, in contrast to the previous embodiments, the fins 14 and the contact strip 16 are arranged completely up to the connection point of the respective contact strip 16 and the Blechabschnifts 30 with the associated connector 28. The connectors 28 and the sheet-metal section 30 are located outside the housing 46. In this case, the slats 14 can realize a cooling function for the control circuit 24 arranged on the printed circuit board 20 or partial sections thereof.

Das Kontaktband 16 und der Blechabschnitt 30 sind bevorzugt aus einem Aluminium oder einer Aluminiumlegierung gefertigt. Die gesamte Länge 48 des Heizelementes 12 setzt sich zusammen aus der Länge 32, die sich innerhalb der Heizvorrichtung 10 befindet und einer Länge 50 des Kontaktbands 16. Die Lamellen 14 des Heizelementes 12 sind über die Länge 50 angeordnet.The contact strip 16 and the sheet metal section 30 are preferably made of an aluminum or an aluminum alloy. The entire length 48 of the heating element 12 is composed of the length 32, which is located within the heater 10 and a length 50 of the contact strip 16. The fins 14 of the heating element 12 are arranged over the length 50.

Vorteilhaft ist es bei einem Ausführungsbeispiel gemäß Figur 6, wenn die gemeinsam umspritzten Verbindungen zusammen auf eine Leiterplatte gelötet sind.It is advantageous in one embodiment according to FIG. 6 when the joint-over-molded connections are soldered together on a circuit board.

Claims (10)

Heizvorrichtung, insbesondere für ein Kraftfahrzeug mit mindestens einem Heizelement (12) zum Erwärmen von Luft und mit einer Steuervorrichtung (22), die eine auf einer Leiterplatte (20) angeordnete Steuerschaltung (24) zum Ansteuern des mindestens einen Heizelementes (12) aufweist, wobei das mindestens eine Heizelement (12) Lamellen (14) und ein Kontaktband (16) aufweisen, wobei ein Kontaktbandabschnitt (30) auf der Leiterplatte (20) der Steuerschaltung (24) angeordnet ist und eine Verbindung zwischen dem mindestens einen Heizelement (12) und der Steuerschaltung (24) ausbildet.Heating device, in particular for a motor vehicle, having at least one heating element (12) for heating air and having a control device (22) which has a control circuit (24) arranged on a printed circuit board (20) for activating the at least one heating element (12) the at least one heating element (12) comprises fins (14) and a contact strip (16), a contact strip section (30) being arranged on the printed circuit board (20) of the control circuit (24) and a connection between the at least one heating element (12) and the control circuit (24) is formed. Heizvorrichtung nach Anspruch 1, dadurch gekennzeichnet dass der Kontaktbandabschnitt (30) mit der Leiterplatte (20) lösbar verbunden ist.Heating device according to claim 1, characterized in that the contact band portion (30) with the circuit board (20) is detachably connected. Heizvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass auf der Leiterplatte (20) ein Verbinder (28) angeordnet ist, mittels dem eine Fixierung und/oder Kontaktierung des Kontaktbandabschnittes (30) auf der Leiterplatte (20) realisierbar ist.Heating device according to claim 1 or 2, characterized in that on the circuit board (20) a connector (28) is arranged, by means of which a fixing and / or contacting of the contact band portion (30) on the circuit board (20) can be realized. Heizvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Länge (32) des Kontaktbandabschnittes (30) größer als ein Viertel der Breite oder größer als die halbe Breite der Leiterplatte (20) ausgebildet ist.Heating device according to one of the preceding claims, characterized in that the length (32) of the contact band portion (30) is greater than a quarter of the width or greater than half the width of the printed circuit board (20) is formed. Heizvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das mindestens eine Heizelement (12) und/oder die Leiterplatte (20) der Steuerschaltung (24) zumindest abschnittsweise oder bereichsweise in einem Gehäuse (46) angeordnet sind.Heating device according to one of the preceding claims, characterized in that the at least one heating element (12) and / or the printed circuit board (20) of the control circuit (24) at least partially or in regions in a housing (46) are arranged. Heizvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass elektronische Bauteile der Steuerschaltung (24) mittels dem Kontaktbandabschnitt (30) kühlbar sind.Heating device according to one of the preceding claims, characterized in that electronic components of the control circuit (24) by means of the contact band portion (30) are coolable. Heizvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das der Kontaktbandabschnitt (30) innerhalb des Gehäuses (46) der Heizvorrichtung oder der Steuervorrichtung (22) angeordnet ist.Heating device according to one of the preceding claims, characterized in that the contact band portion (30) within the housing (46) of the heating device or the control device (22) is arranged. Heizvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Kontaktbandabschnitt (30) außerhalb des Gehäuses (46) angeordnet ist.Heating device according to one of the preceding claims, characterized in that the contact band portion (30) outside the housing (46) is arranged. Heizvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Lamellen (14) des mindestens einen Heizelementes (12) auf der Leiterplatte (20) angeordnet sind und eine Kühlung für Elektronikbausteine der Steuerschaltung (24) realisieren.Heating device according to one of the preceding claims, characterized in that the lamellae (14) of the at least one heating element (12) are arranged on the printed circuit board (20) and realize cooling for electronic components of the control circuit (24). Heizvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das mindestens eine Heizelement (12) ein erstes Heizelement (12) ist und die Heizvorrichtung (10) weitere Heizelemente (12) aufweist.Heating device according to one of the preceding claims, characterized in that the at least one heating element (12) is a first heating element (12) and the heating device (10) further heating elements (12).
EP13290250.3A 2013-10-21 2013-10-21 Heating device Active EP2863143B1 (en)

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EP13290250.3A EP2863143B1 (en) 2013-10-21 2013-10-21 Heating device
US14/519,820 US9937772B2 (en) 2013-10-21 2014-10-21 Heater

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EP3096095A1 (en) * 2015-05-19 2016-11-23 MAHLE International GmbH Electric heating device
EP3096587A1 (en) * 2015-05-20 2016-11-23 MAHLE International GmbH Electric heating device
EP3115236A1 (en) * 2015-07-07 2017-01-11 MAHLE International GmbH Electric heating device and heating or air conditioning facility with such an electrical heating device
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EP2881678A1 (en) * 2013-12-03 2015-06-10 Mahle Behr France Rouffach S.A.S Electric heater
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EP3096095A1 (en) * 2015-05-19 2016-11-23 MAHLE International GmbH Electric heating device
EP3096587A1 (en) * 2015-05-20 2016-11-23 MAHLE International GmbH Electric heating device
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EP3115236A1 (en) * 2015-07-07 2017-01-11 MAHLE International GmbH Electric heating device and heating or air conditioning facility with such an electrical heating device
EP3125646A1 (en) * 2015-07-31 2017-02-01 MAHLE International GmbH Electric heating device
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US9937772B2 (en) 2018-04-10
US20150108117A1 (en) 2015-04-23

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