EP3405001A1 - Procédé de fabrication d'un élément chauffant à coefficient de température positif (ptc) - Google Patents

Procédé de fabrication d'un élément chauffant à coefficient de température positif (ptc) Download PDF

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Publication number
EP3405001A1
EP3405001A1 EP18172444.4A EP18172444A EP3405001A1 EP 3405001 A1 EP3405001 A1 EP 3405001A1 EP 18172444 A EP18172444 A EP 18172444A EP 3405001 A1 EP3405001 A1 EP 3405001A1
Authority
EP
European Patent Office
Prior art keywords
contact
ptc element
ptc
contact plates
bridge
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
EP18172444.4A
Other languages
German (de)
English (en)
Other versions
EP3405001B1 (fr
Inventor
Michael Niederer
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.)
Eberspaecher Catem GmbH and Co KG
Original Assignee
Eberspaecher Catem 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 Eberspaecher Catem GmbH and Co KG filed Critical Eberspaecher Catem GmbH and Co KG
Publication of EP3405001A1 publication Critical patent/EP3405001A1/fr
Application granted granted Critical
Publication of EP3405001B1 publication Critical patent/EP3405001B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/20—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for assembling or disassembling contact members with insulating base, case or sleeve
    • H01R43/24—Assembling by moulding on contact members
    • 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
    • H05B3/02—Details
    • H05B3/04—Waterproof or air-tight seals for heaters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/16—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for manufacturing contact members, e.g. by punching and by bending
    • 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
    • H05B3/02—Details
    • H05B3/06—Heater elements structurally combined with coupling elements or holders
    • 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
    • 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
    • H05B2203/017—Manufacturing methods or apparatus for heaters
    • 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
    • H05B2203/02—Heaters using heating elements having a positive temperature coefficient

Definitions

  • the present invention relates to a method for producing a PTC heating element with a PTC element and contact surfaces for making electrical contact with the PTC element.
  • PTC heating elements such as those from EP 1 253 808 A1 respectively.
  • EP 1 395 098 A1 are known, an electrical conductor on opposite major side surfaces of the PTC element.
  • the conductor track is usually formed from a contact plate, which is connected to a position frame, for example sealed sealed in the position frame.
  • PTC elements have self-regulating properties. With increasing heating, the power consumption decreases as the electrical resistance of the PTC element increases. Thus, one has always strived for a good heat extraction from the PTC element. Furthermore, in PTC heating elements for the automotive industry to ensure cost-effective production. The structure of the PTC heating element must be scalable and reliably producible even within large tolerance limits within predetermined tolerance limits.
  • the present invention is based on the problem of specifying a method for producing a PTC heating element, in which the PTC element is reliably electrically contacted with contact surfaces on its end faces.
  • the present invention proposes a method having the features of claim 1.
  • the contact sheets are connected to each other via electrically insulating bridge elements, leaving a receptacle for the PTC element.
  • electrically insulating bridge elements can be used to form a number of recordings. These bridge elements are usually provided at intervals to each other along elongated contact plates. In each shot, one or more PTC elements may be provided.
  • the PTC element is inserted into the receptacle and between the contact sheets.
  • the contact plates are so far apart that the receptacle is dimensioned sufficiently large that the PTC element can be inserted into the receptacle without being influenced by the contact sheets. Only then is formed for the formation of a voltage applied to the end face of the PTC element contact projection each contact plate.
  • the contact projection can be formed.
  • the contact plates with elongate slots, by means of which the contact projections are cut free as strips on a boundary layer to the PTC element.
  • these thin lands are reformed toward the PTC element and applied against an end face of the PTC element to provide a solid electrical contact between the PTC element and the respective contact sheet.
  • the forming of the contact spring bar for abutment thereof against the PTC element is preferably carried out by a conically widening tool, such as a pin in a slot is introduced between the contact spring bar and the rest of the material of the contact sheet to reform the contact spring bar in the direction of the PTC element.
  • a conically widening tool such as a pin in a slot is introduced between the contact spring bar and the rest of the material of the contact sheet to reform the contact spring bar in the direction of the PTC element.
  • a conically widening tool such as a pin in a slot is introduced between the contact spring bar and the rest of the material of the contact sheet to reform the contact spring bar in the direction of the PTC element.
  • a conically widening tool such as a pin in a slot is introduced between the contact spring bar and the rest of the material of the contact sheet to reform the contact spring bar in the direction of the PTC element.
  • a plurality of pins are provided on a tool for forming the contact spring webs in this way
  • the tool can be lowered in a force-controlled manner to ensure that the contact spring webs rest with a predetermined contact pressure on the end face of the PTC element.
  • the contact spring webs rest with a predetermined contact pressure on the end face of the PTC element.
  • the contact plates are preferably accommodated in a tool which bears against the outer surface of the contact plates.
  • the forces required for reshaping are resisted, so that the deformation on the side to be brought into contact with the PTC element of the contact plates, but not on the opposite free outer side of the contact plates.
  • the forming of the contact spring webs controllable since the possibly monitored force for forming the Maisfedervorsprünge exclusively leads to a deformation in the direction of the PTC element.
  • the contact sheets are encapsulated after forming.
  • an insulating layer is preferably applied to the PTC element.
  • the PTC element is usually provided on its main side surfaces each with an insulating layer, which may be a ceramic insulating layer.
  • the insulating layer is formed by an alumina plate.
  • the insulating layer is preferably glued good thermal conductivity on the PTC element.
  • the insulating layer When encapsulating the contact sheets, the insulating layer is sealed at the edge with a plastic material. In this case, however, the vast surface of the insulating layer is left free, so that the finished PTC heating element is limited with the encapsulation on its outer side substantially by the outer surface of the insulating layer, which can be done with high heat density, a discharge of the heat generated by the PTC element.
  • the bridge or the elements When encapsulating the contact plates usually the bridge or the elements is molded with. These can in turn be connected by molding with the contact plates. However, the contact plates can also be plugged into receptacles of the bridge elements and thus connected to them.
  • the encapsulation of the contact sheets is preferably carried out with an elastic plastic material, for example TPE, elastomer or Duomer.
  • an elastic plastic material for example TPE, elastomer or Duomer.
  • one of the bridge elements which may be formed from a hard plastic component such as polyamide, be provided with a sealing collar having a lamellar seal to form the PTC element as a plug-in heating element, which is sealingly insertable into a plug receptacle of a partition, the a circulation chamber through which the fluid to be heated flows separates from a connection chamber in which contact tongues of the PTC heating element are exposed to the electrical connection.
  • the plastic material sealing the contact surface is preferably selected to have good wetting properties to the surface of the insulating layer.
  • the contact sheets are extended on one side over one of the bridge elements to form said contact tongues.
  • an electrical connection element for the PTC heating element is formed in a conventional manner by the respective contact plates.
  • FIG. 1 shows a perspective side view of two metal strips 2a, 2b, which are each formed identically and forming tongues 4a, 4b.
  • the metal strips 2a, 2b are stamped.
  • Each of the metal strips 2a, 2b has two longitudinal slots 6 which form contact spring webs 8, which are formed as uniform segments on the sheet metal strips 2a, 2b and each provided with a contact projection 9, which forms a convex contact surface 10.
  • the metal strips 2a, 2b are interconnected by an upper bridge element 12 and a lower bridge element 14.
  • the bridge elements 12, 14 are made of plastic. They are connected by encapsulation of the metal strips 2a, 2b with these. When encapsulating provided on the metal strip 2a, 2b holes 16 are kept partially by trained on the injection molding pins. Only the plastic material forming the lower bridge element 14 penetrates one each in the lower region (in FIG. 1 , right) of the sheet metal strip 2a and 2b provided bore 16, so that an intimate positive connection between the plastic material of the bridge element 14 and the sheet metal strips 2a, 2b results. About the two plastic bridge elements 12, 14, the two metal strips 2a, 2b are connected to each other in a predetermined manner and kept at a distance.
  • the bridge elements 12, 14 each form spacers 18, which protrude into a receptacle 20 formed between the two metal strips 2a, 2b and the bridge elements 12, 14.
  • FIG. 3 This in FIG. 2 intermediate product shown is in FIG. 3 shown recorded in a tool 24.
  • This tool 24 is H-shaped and forms U-shaped receptacles for the lower bridge element 14 and the upper bridge element 12 together with the contact tongues 4a, 4b. These recordings of the tool 20 grasp the metal strips 2a, 2b at the edge.
  • a central web of the H-shaped tool 24 is provided, which has a support surface for a in FIG. 3 formed insulating layer, which is formed here by an aluminum oxide plate 26.
  • alumina plate 26 is in FIG. 2 presented intermediate product.
  • the alumina plate 26 then partially covers the metal strips 2a, 2b and is provided at a distance from the bridge elements 12, 14, as this FIG. 6 can be seen.
  • the applied there insulating layer 28 has identical dimensions as the insulating layer 26 in FIG. 3 ,
  • the insulating layer 26 may be provided on its inner surface with a good electrical conductivity adhesive. This can be completely or partially filled with highly thermally conductive particles in order to improve the thermal conductivity of the adhesive.
  • the PTC element 22 is placed ( FIG. 4 ). This is now in the receptacle 20.
  • conical pins 30 engage in the longitudinal slots 6. These have each an idealized circular extension 32, which in the FIGS. 1 and 2 to recognize and adapted for receiving the conical end of the pin 30 is formed.
  • the pins 30 are held in total in a single holding element, not shown, which is movable relative to the tool 24. As part of the lowering of the pins 30 in the direction of the metal strips 2a, 2b, the pins 30 penetrate with their tapered conical end in the extension 32nd in order to cause deformation of the contact spring webs 8. Because the outside of the sheet side 2a, 2b is prevented by the tool 24 within the U-shaped receptacle of the same, to avoid the deformation imposed by the pins 30 to the outside.
  • the contact spring webs 8 are plastically deformed inwardly.
  • the contact surfaces 10 initially bear against end faces 34 of the PTC element 22.
  • the front side surfaces provided on the broad side, over which this electrical contacting takes place, are held by the spacers 18 at a distance from the bridge elements 12, 18.
  • With progressive insertion movement and after the application of the contact spring webs 8 against the end faces 34 results in an elastic deformation of the contact spring webs 8, so that at the end of the deformation of the contact spring webs 8, the contact surfaces 10 rest under a certain elastic bias to the PTC elements 22 end face side.
  • the PTC element 22 is electrically connected via the contact surfaces 10 with the respective metal strips 2a, 2b.
  • the PTC element 22 is also held over this pressure within a housing 36 formed by the sheet-metal strips 2a, 2b and the bridge elements 12, 14 (cf. FIG. 5 ). During this deformation step, the PTC element 22 is supported by a support formed by the tool 24 on the underside with the interposition of the insulating layer 26. Thus, the PTC element 22 is clamped in the vertical direction in the middle between the contact spring webs 8.
  • the pins 30 are pulled.
  • the housing 36 is removed from the tool 24.
  • the further insulating layer 28 is placed on the PTC element 22 in order to provide an intermediate product in which the opposite main side surfaces of the PCT element 22 are each covered by one of the insulating layers 26, 28. This intermediate product is in FIG. 6 shown.
  • FIG. 6 shown intermediate product is then encapsulated by a usually elastic plastic material.
  • This plastic material also passes through the remaining holes 16 of the metal strips 2a, 2b, which are aligned with corresponding holes of the bridge elements 14, 16, so that an intimate positive connection between the intermediate product according to FIG. 6 and the plastic frame 38, which passes through the longitudinal slots. Since the longitudinal slots 6 are recessed immediately adjacent to the insulating layers 26, 28, there is also a reliable seal of the insulating layers 26, 28 through the plastic material of the plastic frame 38, which passes through the longitudinal slots.
  • This plastic material may be a TPE, silicone, a duromer or an elastomer.
  • good wetting of the insulating layers 26, 28 by the corresponding one Plastic material The plastic material is encapsulated with omission of substantially the major side surfaces of the insulating layer 26, 28.
  • the overmolded plastic material results in a plastic frame, which leaves the main side surfaces of the insulating layers 26, 28 substantially and forms a window 40 in which the insulating layers 26, 28 are exposed.
  • the peripheral edges of the insulating layers 26, 28 are sealed by the material of the plastic frame and accordingly there is a seal of the insulating layers 26, 28 relative to the plastic frame 38.
  • Wie FIG. 7 illustrates, only the contact tongues 4a, 4b protrude the product thus produced.
  • the bridge elements 12, 14 are only partially enveloped.
  • the lower bridge element 14 projects beyond the plastic frame 38 and forms from the technical plastic of the bridge element 14 a holder, via which the in FIG. 7 shown PTC heating element 42 can be positioned in a heater housing at the bottom.
  • On the opposite side of the plastic material of the plastic frame 38 forms a sealing collar 44 having a plurality of circumferential sealing beads 46 which can be pressed as a male plug and seal elements in a female receptacle of a partition wall to hold the PTC heating element 42 in a plug connection and in this seal.
  • the plug connection is usually provided in a partition wall which separates a circulation chamber, through which the fluid to be heated flows and in which the PTC heating element 42 is substantially provided, from a connection chamber in which the contact tongues 4a, 4b are electrically connected.
  • the connection chamber can have a printed circuit board, by means of which different PTC heating elements of the heater are combined to form a heating circuit and / or are supplied with current controlled by a power current.
  • the controller may also be provided within the connection chamber.
  • the sealing beads 46 are circumferentially surrounding the plastic of the upper bridge element 12 provided. As a result, the contact force is improved within the female plug element receptacle.
  • the product according to the invention is characterized in that the PTC element 22 is reliably contacted with its opposite end faces 34.
  • the contact surfaces 10 of the metal strips 2a, 2b are not only pressed against the PTC element 22 at. Rather, an elastic deformation is also impressed by the lateral distance between the convex contact surface 10 and the extension 32, which receives the pin 30, the contact spring web 8, which can be compensated during operation any possible Setzbeträge and / or thermal expansion within the PTC heating element 42 ,
  • the plastic frame 38 the heat-generating cell with the two current-carrying metal strips 2a, 2b, which are connected to different polarities, and the PTC heating element 22 completely sealed, since the plastic frame 38 only the insulating layers 26, 28 leaves free.
  • the bridge elements 12, 14 can also be connected by plugging with the metal strips 2a, 2b.
  • the attachment between the bridge elements 12, 14 and the metal strips 2a, 2b can be done for example by welding or gluing. Even positive connections are conceivable.
  • the bridge elements 12, 14 may each be formed in several parts, wherein the plurality of parts of a single bridge element can be joined together, including the metal strips 2a, 2b.
  • the metal strips 2a, 2b are preferably secured in this form-fitting within the bridge or the elements.
  • the metal strips are provided in the longitudinal direction in each case with a plurality of bridge elements, wherein in each case a receptacle is provided between adjacent bridge elements.
  • the illustrated PTC heating element 42 is suitable as a PTC heating element in a fluid heater. Due to the plastic frame 38, there is no risk that the fluid to be heated reaches the PTC element. In this case, the sealing bead 46 is sealingly received in a partition and the protruding over the plastic frame 38 lower bridge element 14 may be received in a recess which is recessed at the bottom of the circulation chamber. As a result, the PTC heating element 42 can be held in a predetermined arrangement and orientation within a fluid heater, as it basically from the EP 2 607 121 B1 . EP 2 440 004 B1 or EP 1 921 896 the applicant is known.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Resistance Heating (AREA)
  • Thermistors And Varistors (AREA)
EP18172444.4A 2017-05-16 2018-05-15 Procédé de fabrication d'un élément chauffant à coefficient de température positif (ptc) Active EP3405001B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017208253.4A DE102017208253A1 (de) 2017-05-16 2017-05-16 Verfahren zum Herstellen eines PTC-Heizelementes

Publications (2)

Publication Number Publication Date
EP3405001A1 true EP3405001A1 (fr) 2018-11-21
EP3405001B1 EP3405001B1 (fr) 2020-10-07

Family

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Family Applications (1)

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EP18172444.4A Active EP3405001B1 (fr) 2017-05-16 2018-05-15 Procédé de fabrication d'un élément chauffant à coefficient de température positif (ptc)

Country Status (4)

Country Link
US (1) US10892590B2 (fr)
EP (1) EP3405001B1 (fr)
CN (1) CN108882399B (fr)
DE (1) DE102017208253A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019204401A1 (de) 2019-03-28 2020-10-01 Eberspächer Catem Gmbh & Co. Kg PTC-Heizelement und elektrische Heizvorrichtung umfassend ein solches
DE102019217234A1 (de) * 2019-11-07 2021-05-12 Eberspächer Catem Gmbh & Co. Kg PTC-Heizeinrichtung und elektrische Heizvorrichtung mit einer solchen PTC- Heizeinrichtung und Verfahren zur Herstellung einer elektrischen Heizvorrichtung
DE102022205705A1 (de) 2022-06-03 2023-12-14 Mahle International Gmbh Heizeinrichtung zum Heizen eines Fluids

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3942266C1 (de) * 1989-12-21 1991-03-07 Tuerk & Hillinger Gmbh PTC-Heizkoerper
EP1253808A2 (fr) 2000-05-23 2002-10-30 Catem GmbH & Co.KG Dispositif de chauffage électrique, utilisé en particulier dans les véhicules
EP1395098A1 (fr) 2002-09-02 2004-03-03 Catem GmbH & Co.KG Chauffage électrique pour véhicule
EP1921896A1 (fr) 2006-10-25 2008-05-14 Catem GmbH & Co.KG Elément produisant de la chaleur pour dispositif chauffant électrique et son procédé de fabrication
EP2547171A2 (fr) * 2011-07-14 2013-01-16 General Electric Company Système de chauffage, dispositif de chauffage et procédés de chauffage d'un composant
EP2607121B1 (fr) 2011-12-22 2014-04-23 Eberspächer catem GmbH & Co. KG Dispositif de chauffage électrique, en particulier pour un véhicule automobile
EP2440004B1 (fr) 2010-10-08 2015-02-25 Eberspächer catem GmbH & Co. KG Dispositif de chauffage électrique

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DE2845965C2 (de) * 1978-10-21 1983-01-20 Fritz Eichenauer GmbH & Co KG, 6744 Kandel Elektrisches Widerstandsheizelement
JP2741434B2 (ja) * 1990-11-26 1998-04-15 太平洋精工株式会社 ブロアモータ用抵抗器
DE10118599B4 (de) * 2001-04-12 2006-07-06 Webasto Ag Elektrische Heizeinrichtung
JP4039266B2 (ja) * 2002-03-26 2008-01-30 株式会社村田製作所 面実装型正特性サーミスタ
CN100374313C (zh) * 2004-03-02 2008-03-12 凯特姆两合公司 用于机动车辆的电加热装置
US7576305B2 (en) * 2006-09-22 2009-08-18 Catem Gmbh & Co. Kg Heat-generating element of a heating device
DE102012204433A1 (de) * 2012-03-20 2013-09-26 Robert Bosch Gmbh Verfahren zur Prüfung einer Heizvorrichtung
DE102012013770A1 (de) * 2012-07-11 2014-01-16 Eberspächer Catem Gmbh & Co. Kg Wärme erzeugendes Element
EP3098896A1 (fr) * 2015-05-28 2016-11-30 Mahle International GmbH Dispositif de régulation de température destiné à réguler la température d'une batterie, en particulier d'un véhicule automobile
EP3101365B1 (fr) * 2015-06-02 2019-12-04 Eberspächer catem GmbH & Co. KG Procédé de fabrication d'un dispositif de chauffage électrique
EP3101998B1 (fr) * 2015-06-02 2020-12-16 Eberspächer catem GmbH & Co. KG Élément de chauffage ptc et dispositif de chauffage électrique comprenant un tel élément de chauffage ptc et procédé de fabrication d'un dispositif de chauffage électrique
EP3101999B1 (fr) * 2015-06-02 2021-03-17 Eberspächer catem GmbH & Co. KG Élement de chauffage a coefficient de temperature positif (ctp) et dispositif de chauffage electrique pour un vehicule automobile comprenant un tel element de chauffage ctp
DE102016224296A1 (de) * 2016-12-06 2018-06-07 Eberspächer Catem Gmbh & Co. Kg Elektrische heizvorrichtung

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3942266C1 (de) * 1989-12-21 1991-03-07 Tuerk & Hillinger Gmbh PTC-Heizkoerper
EP1253808A2 (fr) 2000-05-23 2002-10-30 Catem GmbH & Co.KG Dispositif de chauffage électrique, utilisé en particulier dans les véhicules
EP1395098A1 (fr) 2002-09-02 2004-03-03 Catem GmbH & Co.KG Chauffage électrique pour véhicule
EP1921896A1 (fr) 2006-10-25 2008-05-14 Catem GmbH & Co.KG Elément produisant de la chaleur pour dispositif chauffant électrique et son procédé de fabrication
EP2440004B1 (fr) 2010-10-08 2015-02-25 Eberspächer catem GmbH & Co. KG Dispositif de chauffage électrique
EP2547171A2 (fr) * 2011-07-14 2013-01-16 General Electric Company Système de chauffage, dispositif de chauffage et procédés de chauffage d'un composant
EP2607121B1 (fr) 2011-12-22 2014-04-23 Eberspächer catem GmbH & Co. KG Dispositif de chauffage électrique, en particulier pour un véhicule automobile

Also Published As

Publication number Publication date
DE102017208253A1 (de) 2018-11-22
EP3405001B1 (fr) 2020-10-07
US20180337506A1 (en) 2018-11-22
US10892590B2 (en) 2021-01-12
CN108882399A (zh) 2018-11-23
CN108882399B (zh) 2020-08-18

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