EP2441314A1 - Electrical heating element for heating and method for producing such an electrical heating element - Google Patents

Electrical heating element for heating and method for producing such an electrical heating element

Info

Publication number
EP2441314A1
EP2441314A1 EP10803248A EP10803248A EP2441314A1 EP 2441314 A1 EP2441314 A1 EP 2441314A1 EP 10803248 A EP10803248 A EP 10803248A EP 10803248 A EP10803248 A EP 10803248A EP 2441314 A1 EP2441314 A1 EP 2441314A1
Authority
EP
European Patent Office
Prior art keywords
passivation layer
electrical heating
ceramic substrate
ceramic
heating element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP10803248A
Other languages
German (de)
French (fr)
Inventor
Hans-Dieter Röhling
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.)
Behr Hella Thermocontrol GmbH
Original Assignee
Behr Hella Thermocontrol GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Behr Hella Thermocontrol GmbH filed Critical Behr Hella Thermocontrol GmbH
Publication of EP2441314A1 publication Critical patent/EP2441314A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/42—Heating elements having the shape of rods or tubes non-flexible
    • H05B3/46—Heating elements having the shape of rods or tubes non-flexible heating conductor mounted on insulating base
    • 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
    • H05B3/26—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base
    • H05B3/265—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base the insulating base being an inorganic material, e.g. ceramic
    • 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
    • H05B2203/013—Heaters using resistive films or coatings
    • 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

  • Electric heating element for a heating and method for producing such an electric heating element
  • the invention relates to an electrical heating element for a motor vehicle heating system and to a method for producing such an electrical heating element.
  • Electric heaters as heaters for internal combustion engine and hybrid motor vehicles or as Voütropicungen for electric vehicles are basically known.
  • This PTC elements are used, which are energized and thereby emit heat.
  • the heating elements are arranged between heat-conducting elements of the heating and release their heat via these heat-conducting elements to the environment.
  • the entire heater is located in the interior of the vehicle-mounted airflow. In (pure) electric vehicles only electric (Voii-) heaters are used.
  • the electrical heating element according to the invention for a motor vehicle heater is provided with - a ceramic substrate,
  • an electrical heating conductor which is arranged on the ceramic substrate, a passivation layer deposited on the ceramic substrate and covering the electrical heating trace, and
  • a ceramic cover member disposed on the passivation layer and sealingly connected to the passivation layer against ingress of gases and / or fluids.
  • the electric heating element according to the invention has two ceramic elements, namely a ceramic substrate and a ceramic cover.
  • On the ceramic substrate is an electrical heating conductor, which is covered by a passivation layer, which is preferably designed as a glass passivation.
  • On the passivation layer is the ceramic cover element, which is hermetically sealed with the passivation layer, i. H. is tightly connected against the ingress of gases and / or fluids or moisture.
  • the two-sided cover of the electric heating element by the ceramic elements creates a montagefreundltches and touch-safe heating element, which is also protected from damage.
  • the electrical heating element according to the invention can be easily introduced between heating elements, wherein the ceramic elements protect the electrical heating conductor from damage.
  • the Schuleiterbahn is designed as a resistance paste pressure.
  • the Schuieiterbahn is guided into a projecting portion of the ceramic substrate, which projects beyond at least one edge portion of the ceramic cover member and in which the electrical contacting of the Edelleiterbahn can take place.
  • connection of the ceramic cover element with the (glass) passivation layer takes place in an advantageous embodiment of the invention by a Giaslot- layer over which the ceramic cover element with the passivation layer is "fused".
  • the electrical heating element according to the invention can preferably be produced by providing a ceramic substrate,
  • an electrical heating conductor is applied to the ceramic substrate
  • the ceramic cover is tightly connected to the passivation layer to protect against the ingress of gases and / or fluids.
  • FIG. 2 is a view of an electric heater with a plurality of electric heating elements according to FIG. 1,
  • the electric heating element 10 comprises a ceramic substrate 12 on which a heating conductor 14 is applied, in particular in the paste printing process.
  • the heating conductor 14 is guided at its two ends 16 into a contacting region 18 of the ceramic substrate 12.
  • the heating conductor 14 is covered by a glass passivation layer 20, the electromag- rations and provides protection against contact.
  • the glass passivation layer 20 protects the heating conductor 16 from moisture.
  • a ceramic cover member 22 On the glass passivation layer 20 is a ceramic cover member 22 which is hermetically sealed to the glass passivation layer 20 by means of a glass solder layer 24.
  • the ceramic cover member 22 bounces back from the contactor portion 18 of the ceramic substrate 12.
  • the entire structure of the electric heating element 10 is substantially strip-shaped. With such a strip-shaped heating element 10, it is possible to generate a heating power of approximately 1 kW when an electrical voltage of approximately 400 V is applied.
  • the ceramic cover element 22 is applied to the glass passivation layer 20 in a high-temperature process, namely by the glass soldering method.
  • the ceramic cover element 22 is replaced by the glass solder layer 24 with the glass passivation layer 20 merged, so to speak.
  • the hermetic seal ensures the contact and moisture protection of the heating element.
  • FIG. 2 shows the structure of a full or (additional) electric heater 26 for a vehicle having a frame 28 with a plurality of heat conducting sheets 30 held within the frame. Between each adjacent chargingleitblechen 30 are strip-shaped heating elements 10 as shown in FIG. 1, the contacting regions 18 protrude into a connection module 32. In the Anschiussmodul 32, the electrical contacting of the heating elements 10 and their control. LIST OF REFERENCES

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Resistance Heating (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Surface Heating Bodies (AREA)

Abstract

The invention relates to an electrical heating element for a motor vehicle heater having a ceramic substrate (12) on which an electrical heating conductor track (14) is arranged. According to the invention, the ceramic substrate (12) and the heating conductor track (14) are covered by a glass passivation layer (20) in particular. A ceramic cover element (22) is located on the glass passivation layer (20) which is in particular connected to the passivation layer (20) by means of a glass soldering method in a hermetically sealed manner.

Description

Elektrisches Heizelement für eine Heizung und Verfahren zur Herstellung eines derartigen elektrischen Heizelements  Electric heating element for a heating and method for producing such an electric heating element
Die Erfindung betrifft ein elektrisches Heizelement für eine Kfz-Heizung und ein Verfahren zur Herstellung eines derartigen elektrischen Heizelements, The invention relates to an electrical heating element for a motor vehicle heating system and to a method for producing such an electrical heating element.
Elektrische Heizungen als Zuheizer für Verbrennungsmotor- und Hybrid- Kraftfahrzeuge bzw. als Voüheizungen für Eiektrofahrzeuge sind grundsätzlich bekannt. Dabei werden PTC-Elemente eingesetzt, die bestromt werden und dabei Wärme abgeben. Die Heizelemente sind zwischen wärmeleitenden Elementen der Heizung angeordnet und geben ihre Wärme über diese Wärmeleit- elemente an die Umgebung ab. Der gesamte Zuheizer ist im ins Innere des fahrzeuggeführten Luftstroms angeordnet. In (reinen) Elektrofahrzeugen werden ausschließlich elektrische (Voii-) Heizungen eingesetzt. Electric heaters as heaters for internal combustion engine and hybrid motor vehicles or as Voüheizungen for electric vehicles are basically known. This PTC elements are used, which are energized and thereby emit heat. The heating elements are arranged between heat-conducting elements of the heating and release their heat via these heat-conducting elements to the environment. The entire heater is located in the interior of the vehicle-mounted airflow. In (pure) electric vehicles only electric (Voii-) heaters are used.
Durch den Einsatz von Hochvolt-Bordnetzen in Kraftfahrzeugen von ca. 400 V ist es möglich, auch zur Erzielung von höheren Heizleistungen als bei eiektri- sehen Heizern für die Niedervolt-Bordnetze (z. B. 24 V) die Stromstärken herabzusetzen, womit auch der Querschnitt der Zuleitungen verringert werden kann. Allerdings werden für Hochvoltanwendungen hermetisch abgeschirmte Heizelemente mit hoher elektrischer Durchschlagsfestigkeit benötigt, die darüber hinaus berührungssicher und feuchtigkeitsresistent sind. The use of high-voltage on-board electrical systems in motor vehicles of about 400 V makes it possible to lower the current intensities even for higher heat outputs than for electric heaters for low-voltage vehicle systems (eg 24 V) Cross-section of the leads can be reduced. However, high-voltage applications require hermetically sealed heating elements with high dielectric strength, which are also touch-proof and moisture-resistant.
Ein elektrisches Heizelement, das diesen Anforderungen genügt, wird im Rahmen dieser Erfindung vorgestellt. Das erfindungsgemäße elektrische Heizelement für eine Kfz-Heizung ist versehen mit - einem Keramik-Substrat, An electric heating element that meets these requirements is presented in the context of this invention. The electrical heating element according to the invention for a motor vehicle heater is provided with - a ceramic substrate,
- einer elektrischen Heizleiterbahn, die auf dem Keramik-Substrat angeordnet ist, einer Passivierungsschicht, die auf dem Keramik-Substrat aufgebracht ist und die elektrische Heizleiterbahn überdeckt, und an electrical heating conductor, which is arranged on the ceramic substrate, a passivation layer deposited on the ceramic substrate and covering the electrical heating trace, and
einem Keramik-Abdeckelement, das auf der Passivierungsschicht angeordnet ist und gegen Eindringen von Gasen und/oder Fluiden dicht mit der Passivierungsschicht verbunden ist.  a ceramic cover member disposed on the passivation layer and sealingly connected to the passivation layer against ingress of gases and / or fluids.
Das erfindungsgemäße elektrische Heizelement weist zwei Keramik-Elemente auf, nämlich ein Keramik-Substrat und ein Keramik-Abdeckelement. Auf dem Keramik-Substrat befindet sich eine elektrische Heizleiterbahn, die von einer Passivierungsschicht, welche vorzugsweise als Glaspassivierung ausgeführt ist, abgedeckt ist. Auf der Passivierungsschicht befindet sich das Keramik-Abdeck- element, das mit der Passivierungsschicht hermetisch dicht, d. h. dicht gegen das Eindringen von Gasen und/oder Fluiden bzw. Feuchtigkeit verbunden ist. Infolge der beidseitigen Abdeckung des elektrischen Heizelements durch die Keramik-Elemente entsteht ein montagefreundltches und berührungssicheres Heizeiement, das auch vor Beschädigungen geschützt ist. Durch die beidseitige Keramik-Außenschicht kann das erfindungsgemäße elektrische Heizelement problemlos zwischen Wärmeieitelementen eingebracht werden, wobei die Ke- ramik-Elemente die elektrische Heizleiterbahn vor Beschädigungen schützt. The electric heating element according to the invention has two ceramic elements, namely a ceramic substrate and a ceramic cover. On the ceramic substrate is an electrical heating conductor, which is covered by a passivation layer, which is preferably designed as a glass passivation. On the passivation layer is the ceramic cover element, which is hermetically sealed with the passivation layer, i. H. is tightly connected against the ingress of gases and / or fluids or moisture. As a result of the two-sided cover of the electric heating element by the ceramic elements creates a montagefreundltches and touch-safe heating element, which is also protected from damage. As a result of the two-sided ceramic outer layer, the electrical heating element according to the invention can be easily introduced between heating elements, wherein the ceramic elements protect the electrical heating conductor from damage.
Zweckmäßigerweise wird die Heizleiterbahn als Widerstandspastendruck ausgeführt. Vorzugsweise ist die Heizieiterbahn bis in einen vorstehenden Bereich des Keramik-Substrats geführt, der über zumindest einen Randabschnitt des Keramik-Abdeckelements übersteht und in dem die elektrische Kontaktierung der Heizleiterbahn erfolgen kann. Conveniently, the Heizleiterbahn is designed as a resistance paste pressure. Preferably, the Heizieiterbahn is guided into a projecting portion of the ceramic substrate, which projects beyond at least one edge portion of the ceramic cover member and in which the electrical contacting of the Heizleiterbahn can take place.
Die Verbindung des Keramik-Abdeckelements mit der (Glas-) Passivierungsschicht erfolgt in vorteilhafter Weiterbildung der Erfindung durch eine Giaslot- schicht, über die das Keramik-Abdeckelement mit der Passivierungsschicht "verschmolzen" ist. Das erfindungsgemäße elektrische Heizelement lässt sich vorzugsweise dadurch herstellen, dass ein Keramik-Substrat bereitgestellt wird, The connection of the ceramic cover element with the (glass) passivation layer takes place in an advantageous embodiment of the invention by a Giaslot- layer over which the ceramic cover element with the passivation layer is "fused". The electrical heating element according to the invention can preferably be produced by providing a ceramic substrate,
- auf dem Keramik-Substrat eine elektrische Heizleiterbahn aufgebracht wird,  an electrical heating conductor is applied to the ceramic substrate,
auf der Heizleiterbahn und dem Keramik-Substrat eine Passivierungs- schicht aufgebracht wird, und  on the Heizleiterbahn and the ceramic substrate, a passivation layer is applied, and
ein Keramik-Abdeckelement bereitgestellt wird,  a ceramic cover element is provided,
- wobei das Keramik-Abdeckelement zum Schutz vor dem Eindringen von Gasen und/oder Fluiden dicht mit der Passivierungsschicht verbunden ist.  - Wherein the ceramic cover is tightly connected to the passivation layer to protect against the ingress of gases and / or fluids.
Weitere vorteilhafte Ausgestaltungen des erfindungsgemäßen Hersteliungsver- fahrens sind in den Unteransprüchen angegeben. Further advantageous embodiments of the manufacturing method according to the invention are specified in the subclaims.
Ein Ausführungsbeispiel des erfindungsgemäßen elektrischen Heizelements wird nachfolgend unter Bezugnahme auf die Zeichnung näher erläutert. Im Einzelnen zeigen dabei: An embodiment of the electric heating element according to the invention will be explained in more detail with reference to the drawing. In detail, they show:
Fig. 1 in Explostonsdarsteliung und perspektivisch den Aufbau des elektrischen Heizelements und Fig. 1 in Explostonsdarsteliung and perspective the structure of the electric heating element and
Fig. 2 eine Ansicht auf einen elektrischen Zuheizer mit mehreren elektrischen Heizelementen gemäß Fig. 1,  2 is a view of an electric heater with a plurality of electric heating elements according to FIG. 1,
Fig. 1 zeigt perspektivisch und in Explosionsdarstellung den Schichtenaufbau eines elektrischen Heizelements 10 für Hochvolt-Bordnetze in Fahrzeugen von bis ca. 400 V. Das elektrische Heizelement 10 umfasst ein Keramik-Substrat 12, auf dem insbesondere im Pastendruckverfahren eine Heizleiterbahn 14 aufgebracht ist. Die Heizleiterbahn 14 ist an ihren beiden Enden 16 bis in einen Kontaktierungsbereich 18 des Keramik-Substrats 12 geführt. Die Heizleiterbahn 14 ist von einer Glaspassivierungsschicht 20 überzogen, die Elektromig- rationen verhindert und einen Berührungsschutz darstellt. Darüber hinaus schützt die Glaspassivierungsschicht 20 die Heizleiterbahn 16 vor Feuchtigkeit. 1 shows a perspective and exploded view of the layer structure of an electrical heating element 10 for high-voltage vehicle electrical systems in vehicles of up to approximately 400 V. The electric heating element 10 comprises a ceramic substrate 12 on which a heating conductor 14 is applied, in particular in the paste printing process. The heating conductor 14 is guided at its two ends 16 into a contacting region 18 of the ceramic substrate 12. The heating conductor 14 is covered by a glass passivation layer 20, the electromag- rations and provides protection against contact. In addition, the glass passivation layer 20 protects the heating conductor 16 from moisture.
Auf der Glaspassivierungsschicht 20 befindet sich ein Keramik-Abdeckelement 22, das mittels einer Glaslotschicht 24 mit der Glaspassivierungsschicht 20 hermetisch dicht verbunden ist. Das Keramik-Abdeckelement 22 springt gegenüber dem Kontaktlerungsbereich 18 des Keramik-Substrats 12 zurück. Der gesamte Aufbau des elektrischen Heizelements 10 ist im Wesentlichen streifenförmig. Mit einem derartigen streifenförmigen Heizelement 10 ist es mög- lieh, unter Anlegung einer elektrischen Spannung von ca. 400 V eine Heizleistung von ca. 1 kW zu erzeugen. Um die im Hochvoltbereich geforderte Durchschlagsfestigkeit und gleichzeitig höhere Abriebfestigkeit zu erreichen, ist das Keramik-Abdeckelement 22 in einem Hochtemperaturprozess, nämlich nach dem Glaslotverfahren, auf die Glaspassivierungsschicht 20 aufgebracht Hier- durch wird das Keramik-Abdeckelement 22 mittels der Glaslotschicht 24 mit der Glaspassivierungsschicht 20 sozusagen verschmolzen. Dadurch entsteht ein hermetisch abgeschirmtes Heizelement ( 10), welches sehr montagefreund- lich ist, da es einteilig ausgeführt ist. Die hermetische Dichtigkeit sichert den Berührungs- und Feuchtigkeitsschutz des Heizelements. On the glass passivation layer 20 is a ceramic cover member 22 which is hermetically sealed to the glass passivation layer 20 by means of a glass solder layer 24. The ceramic cover member 22 bounces back from the contactor portion 18 of the ceramic substrate 12. The entire structure of the electric heating element 10 is substantially strip-shaped. With such a strip-shaped heating element 10, it is possible to generate a heating power of approximately 1 kW when an electrical voltage of approximately 400 V is applied. In order to achieve the dielectric strength and high abrasion resistance required in the high-voltage range, the ceramic cover element 22 is applied to the glass passivation layer 20 in a high-temperature process, namely by the glass soldering method. Hereby, the ceramic cover element 22 is replaced by the glass solder layer 24 with the glass passivation layer 20 merged, so to speak. This creates a hermetically shielded heating element (10), which is very easy to assemble because it is made in one piece. The hermetic seal ensures the contact and moisture protection of the heating element.
Fig. 2 zeigt den Aufbau einer elektrischen Voll- oder (Zusatz-) Heizung 26 für ein Fahrzeug, die einen Rahmen 28 mit mehreren innerhalb des Rahmens gehaltenen Wärmeleitblechen 30 aufweist. Zwischen jeweils benachbarten Wärmeleitblechen 30 befinden sich streifenförmige Heizelemente 10 gemäß Fig. 1, deren Kontaktierungsbereiche 18 in ein Anschlussmodul 32 hineinragen. In dem Anschiussmodul 32 erfolgt die elektrische Kontaktierung der Heizelemente 10 sowie deren Steuerung. Bezuqszeichenliste FIG. 2 shows the structure of a full or (additional) electric heater 26 for a vehicle having a frame 28 with a plurality of heat conducting sheets 30 held within the frame. Between each adjacent Wärmeleitblechen 30 are strip-shaped heating elements 10 as shown in FIG. 1, the contacting regions 18 protrude into a connection module 32. In the Anschiussmodul 32, the electrical contacting of the heating elements 10 and their control. LIST OF REFERENCES
10 Heizelement 10 heating element
12 Keramik-Substrat 12 ceramic substrate
14 Heizfeiterbahn 14 heating track
16 Heizleiterbahnenden  16 heating conductor ends
18 Kontaktierungsbereich des Keramik-Substrats 20 Gtaspassivierungsschicht  18 contacting region of the ceramic substrate 20 passivation layer
22 Keramik-Abdeckelement 22 ceramic cover
24 Glaslotschicht 24 glass solder layer
26 Heizung 26 heating
28 Rahmen 28 frame
30 Wärmeleitbleche 30 heat conducting plates
32 Anschlussmodul 32 connection module

Claims

Ansprüche claims
1. Elektrisches Heizeiement für eine Kfz-Heizung mit 1. Electric heating element for a car heating with
einem Keramik-Substrat (12),  a ceramic substrate (12),
einer elektrischen Heizleiterbahn ( 14), die auf dem Keramik-Substrat (12) angeordnet ist,  an electrical heating conductor (14), which is arranged on the ceramic substrate (12),
einer Passivierungsschicht (20), die auf dem Keramik-Substrat (12) aufgebracht ist und die elektrische Heizleiterbahn (14) überdeckt, und einem Keramik-Abdeckeiement (22), das auf der Passivierungsschicht (20) angeordnet ist und gegen Eindringen von Gasen und/oder Fluiden dicht mit der Passivierungsschicht (20) verbunden ist.  a passivation layer (20) deposited on the ceramic substrate (12) covering the electrical heating trace (14) and a ceramic covering element (22) disposed on the passivation layer (20) and against the ingress of gases and / Fluids is tightly connected to the passivation layer (20).
2. Elektrisches Heizelement nach Anspruch 1, dadurch gekennzeichnet , dass zwischen der Passivierungsschicht (20) und dem Keramik- Abdeckelement (22) zur dächten Verbindung eine Glaslotschicht (24) angeordnet ist 2. An electrical heating element according to claim 1, characterized in that between the passivation layer (20) and the ceramic cover (22) for the roofed connection a glass solder layer (24) is arranged
3. Elektrisches Heizelement nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die elektrische Heizleiterbahn (14) als Widerstandspastendruck ausgeführt ist. 3. Electrical heating element according to claim 1 or 2, characterized in that the electrical heating conductor (14) is designed as a resistor paste pressure.
4. Elektrisches Heizelement nach Anspruch 1 bis 3, dadurch gekennzeichnet, dass das Keramik-Substrat (12) an zumindest einem Randabschnitt über das Keramik-Abdeckelement (22) vorsteht und dass die elektrische Heiz- leiterbahn (14) zu ihrer elektrischen Kontaktierung bis in den vorstehenden Bereich (18) des Keramik-Substrats (12) geführt ist. 4. Electrical heating element according to claim 1 to 3, characterized in that the ceramic substrate (12) on at least one edge portion on the ceramic cover (22) protrudes and that the electrical heating conductor (14) for their electrical contact up to the projecting portion (18) of the ceramic substrate (12) is guided.
5. Elektrisches Heizeiement nach Anspruch 1 bis 4, dadurch gekennzeichnet, dass das Keramik-Substrat (12) und das Keramik-Abdeckelement (22) jeweils streifenförmig ausgeführt sind. 5. Electrical heating element according to claim 1 to 4, characterized in that the ceramic substrate (12) and the ceramic cover element (22) are each designed strip-shaped.
6. Verfahren zur Hersteilung eines elektrischen Heizelements, insbesondere nach einem der vorhergehenden Ansprüche, wobei ein Keramik-Substrat ( 12) bereitgestellt wird, 6. A method for manufacturing an electric heating element, in particular according to one of the preceding claims, wherein a ceramic substrate (12) is provided,
auf dem Keramik-Substrat (12) eine elektrische Heizleiterbahn (14) aufgebracht wird,  on the ceramic substrate (12) an electrical heating conductor (14) is applied,
auf der Heizleiterbahn (14) und dem Keramik-Substrat (12) eine Pas- sivierungsschicht (20) aufgebracht wird, und  on the heating conductor (14) and the ceramic substrate (12) a passivation layer (20) is applied, and
ein Keramik-Abdeckelement (22) bereitgestellt wird,  a ceramic cover element (22) is provided,
wobei das Keramik-Abdeckelement (22) zum Schutz vor dem Eindringen von Gasen und/oder Fluiden dicht mit der Passivierungsschicht (20) verbunden ist.  wherein the ceramic cover member (22) is sealed to the passivation layer (20) for protection against the ingress of gases and / or fluids.
7. Verfahren nach Anspruch 6, dadurch gekennzeichnet, dass die dichte 7. The method according to claim 6, characterized in that the density
Verbindung des Keramik-Abdeckelements (22) mit der Passivierungsschicht (20) im Glaslotverfahren erfolgt  Connection of the ceramic cover member (22) takes place with the passivation layer (20) in Glaslotverfahren
8. Verfahren nach Anspruch 6 oder 7, dadurch gekennzeichnet, dass die Heizleiterbahn (14) im Pastendruck aufgebracht wird. 8. The method according to claim 6 or 7, characterized in that the Heizleiterbahn (14) is applied in paste printing.
9. Verfahren nach Anspruch 6 bis 8, dadurch gekennzeichnet, dass als Passivierungsschicht (20) eine Glaspassivierungsschicht (20)verwendet wird. 9. The method according to claim 6 to 8, characterized in that as Passivierungsschicht (20) a glass passivation layer (20) is used.
EP10803248A 2009-12-21 2010-12-20 Electrical heating element for heating and method for producing such an electrical heating element Withdrawn EP2441314A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009059832 2009-12-21
PCT/EP2010/070195 WO2011085915A1 (en) 2009-12-21 2010-12-20 Electrical heating element for heating and method for producing such an electrical heating element

Publications (1)

Publication Number Publication Date
EP2441314A1 true EP2441314A1 (en) 2012-04-18

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EP10803248A Withdrawn EP2441314A1 (en) 2009-12-21 2010-12-20 Electrical heating element for heating and method for producing such an electrical heating element

Country Status (2)

Country Link
EP (1) EP2441314A1 (en)
WO (1) WO2011085915A1 (en)

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DE102012209936A1 (en) * 2012-06-13 2013-12-19 Webasto Ag Electric heating device for a motor vehicle
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