EP3598847B1 - Élément produisant de la chaleur et son procédé de fabrication - Google Patents

Élément produisant de la chaleur et son procédé de fabrication Download PDF

Info

Publication number
EP3598847B1
EP3598847B1 EP19186522.9A EP19186522A EP3598847B1 EP 3598847 B1 EP3598847 B1 EP 3598847B1 EP 19186522 A EP19186522 A EP 19186522A EP 3598847 B1 EP3598847 B1 EP 3598847B1
Authority
EP
European Patent Office
Prior art keywords
ptc element
contact
heat
insulating layer
retaining lugs
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.)
Active
Application number
EP19186522.9A
Other languages
German (de)
English (en)
Other versions
EP3598847A1 (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 EP3598847A1 publication Critical patent/EP3598847A1/fr
Application granted granted Critical
Publication of EP3598847B1 publication Critical patent/EP3598847B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • H05B3/48—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material
    • H05B3/50—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material heating conductor arranged in metal tubes, the radiating surface having heat-conducting fins
    • 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
    • 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
    • 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
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1854—Arrangement or mounting of grates or heating means for air heaters
    • F24H9/1863—Arrangement or mounting of electric heating 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
    • H05B3/00—Ohmic-resistance heating
    • H05B3/02—Details
    • H05B3/03—Electrodes
    • 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
    • H05B3/32—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulators on a metallic frame
    • 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 heat-generating element with the preamble features of claim 1.
  • a heat-generating element is from EP 0 240 447 A2 known.
  • a film provided with a recess is placed on a sheet metal bent into a U-shape.
  • a PTC element is placed in the recess and on a base of the U-shaped bent sheet metal, which is provided with a contact sheet on the side opposite the base.
  • the layers of the film are placed on the side of the contact plate opposite the PTC element.
  • the upstanding legs of the U-shaped base are bent over in order to place the contact plate and the PTC element against the base with the interposition of the insulation and to join the heat-generating element into one unit.
  • JP 2016 186 585 A A similar prior art is out JP 2016 186 585 A known.
  • a U-shaped foil is merely placed on the top of the contact plate before the legs are pressed against the foil and the contact plate.
  • heat-generating elements are used in various areas of technology.
  • the present invention particularly relates to a heat generating element for use in motor vehicles.
  • heat-generating elements of the type mentioned are used as auxiliary heaters to compensate for insufficient heating of air introduced into the passenger compartment by the heat exchanger, which is connected to the engine's cooling water, or in an electric vehicle in a heater to heat the Interior and for defrosting the windshield. This also applies to the heat-generating element according to the invention.
  • Vehicles can be used in very hot regions or very cold regions.
  • all components in a motor vehicle are exposed to considerable vibration.
  • the motor vehicle manufacturers place special demands on the fatigue strength that the components have to meet under the conditions mentioned.
  • Heat-generating elements for heating a motor vehicle must be economical to manufacture and easy to handle.
  • EP 1 564 503 A1 the present applicant known to first mount the contact plates and the adjacent PTC element in a heater and then to generate the electrical contact by applying an external spring force by inserting a spring into the frame receiving the heat-generating element, which the elements of the electrical heating device applied biased against each other, so that there is also good electrical contact between the PTC element and the contact plates and good heat dissipation of the heat generated by the PTC element.
  • the present invention proposes a heat-generating element having the features of claim 1.
  • the heat-generating element according to the invention has, in a manner known per se, at least one PTC element and contact plates which are in contact therewith in an electrically conductive manner for supplying current to the PTC element.
  • the contact plates rest on opposite side surfaces of the PTC element. They are electrically isolated from each other and assigned different polarities.
  • the PTC element usually has a rectangular shape, with a main side surface, that is to say the surface with the largest base area, generally being used to dissipate the heat generated by the PTC element.
  • the contact sheet is usually in contact with the PTC element with its contact surface.
  • the contact plate on an end face which connects the two main side faces of the PTC element to one another and which is usually not used for heat extraction.
  • the contact plate can just as well rest both on the main side surface and on an end face.
  • At least one of the contact plates has retaining tabs which usually protrude on opposite longitudinal sides from the contact surface of the contact plate in order to grip around the PTC element in a form-fitting manner.
  • the encompassing takes place with the interposition of an insulating layer, so that the mechanical fastening of the contact plate to the PTC element caused by the form-fitting encircling is not at the same time also an electrically conductive contact of the retaining tab on the PTC element.
  • the retaining tabs rest on that surface of the PTC element which is opposite that surface of the PTC element on which the contact plate having these retaining tabs for energizing the PTC element is in contact.
  • the PTC element is preferably braced against the contact surface of the contact plate designed for electrical contacting due to the form-fitting wrap around by the retaining tab.
  • the retaining tab holds the PTC element under pretension against the contact plate for energizing the PTC element.
  • the contact plate has several retaining tabs, which means that at least two retaining tabs are opposite one another in order to rest against one another and to press the PTC element against the contact plate.
  • the retaining tabs are usually made in one piece by punching and bending from a sheet metal material, so that the contact surface of the contact sheet provided for contacting and the retaining tabs are formed on a one-piece sheet metal piece. This reduces the manufacturing costs.
  • the retaining tabs encompassing the PTC element do not only bring about a pre-assembly of the components of the heat-generating element. Rather, due to the permanent elastic pretensioning of the contact surface of the contact sheet against the PTC element, there is also an advantageous contact during operation.
  • the quality of this contact and also of the connection between the contact plate and the PTC element can be increased in that the PTC element is encompassed by the retaining tabs.
  • the PTC element is encompassed by the retaining tabs.
  • at least one retaining tab is provided on all edges of the PTC element.
  • retaining tabs are provided with a spacing of no more than 30 ° from one another. This promotes a circumferential bias of the contact surface of the contact plate against the PTC element.
  • each of the contact plates is provided with several retaining tabs and that the retaining tabs of the respective contact plates alternately encompass the PTC element along its longitudinal edge.
  • the contact plates usually encompass the PTC element at least on opposite longitudinal edges.
  • both contact plates can encompass the PTC element extensively.
  • the retaining tabs are provided alternately so that two contact tabs of a first contact sheet accommodate a retaining tab of a second contact sheet between them. This causes a solid bracing of the PTC element against both contact surfaces of the respective contact plates. The cohesion of the pre-assembled components is also improved.
  • the insulating layer is formed by an insulating plate.
  • This insulating plate can be, for example, a ceramic plate made of aluminum oxide or titanium nitride.
  • the insulating plate has sufficient strength so that the force applied by the elastic contact of the retaining tabs can be counterbalanced by the insulating plate without the insulating plate being mechanically damaged.
  • Elements that have good thermal conductivity are preferably used as the insulating plate. This basically applies to ceramic materials.
  • the insulating plate usually extends over the entire main side surface of the PTC element, i. H. it covers the main side surface of the PTC element and the contact surface which is usually provided with the same dimensions and is formed by the contact sheet.
  • the insulating plate preferably projects beyond the edge of the PTC element. This offers the possibility of providing the holding tabs with a larger physical extension, so that the spring travel provided by the holding tab is increased, which has a favorable effect on the resulting spring force. The clearance or creepage distance is also increased by this measure.
  • the retaining tab usually has a free end which is bent at right angles, so that a contact section extends parallel to the surface of the insulating layer or insulating plate and a holding section extends at right angles from the contact section and the insulating layer or plate surrounds the edge so that it is relatively is prepositioned to the PTC element in the width and / or length direction.
  • the configuration then ensures that the insulating layer fixed by the retaining tabs is arranged centrally over the PTC element and the contact surface.
  • the contact sheet has contact tabs cut free from the sheet metal material forming the contact sheet, which are bent over in the direction of the PTC element to form contacts resting on the PTC element.
  • an elastically pretensioned abutment of the contact plate against the surface of the PTC element to be contacted is formed.
  • This measure leads to an improved elastic pretension due to the wrap around the retaining tabs. Because not only the elasticity of the retaining tabs, but also the elasticity of the contact tabs apply elastic pretension and accordingly improve the contacting of the PTC element on the one hand and the mount of the components of the heat-generating element on the other hand.
  • the discrete contacts have the further advantage that they can be used to make electrical contact in a predetermined manner.
  • the spring tongues and their arrangement for example, on the EP 2 637 475 referenced.
  • the design and arrangement of the spring tongues described there can also be used for the present invention.
  • thermally conductive mass between the PTC element and the contact plate.
  • the mass does not necessarily have to be electrically conductive if the aforementioned spring tongues are provided for the defined contacting of the contact plate.
  • the thermally conductive compound fills the gap between the contact surface of the PTC element facing the PTC element and the contact tongues, so that there is a good thermally conductive connection between the contact plate and the PTC element.
  • an electrically and thermally conductive mass can be used.
  • a plastic compound filled with electrically conductive particles, for example silicone can be used.
  • thermosetting two-component silicone mass which is filled with said filler components made of metal or ceramic.
  • the thermally conductive compound can also extend between the contact plate and the insulating layer in order to also bring about a good decoupling of the heat generated by the PTC element on the heat conduction path behind the contact plate.
  • the PTC element be completely surrounded by a frame made of an insulating material, leaving a heat-emitting surface formed by the insulating layer free.
  • the outer surface of the heat generating Element formed by the heat-emitting surfaces of the two insulating layers, which cover the PTC element and the contact plates in a thermally conductive manner and for this purpose are regularly connected to one of the main side surfaces of the PTC element.
  • the insulating layers are surrounded by the edge of the insulating material and regularly embedded therein. This insulating material forms a frame that completely surrounds the PTC element.
  • the insulating material is sealingly connected to the heat-emitting surface, so that the heat-generating element according to this development is also suitable for direct use in a liquid heater in which the heat-emitting surfaces of the insulating layers are exposed.
  • This frame made of insulating material is usually only surmounted by connecting lugs or contact tongues, which are provided for electrical contacting of the PTC element in the manner of male plug contact elements.
  • the present invention also provides a method for producing a heat-generating element.
  • contact plates with retaining tabs formed thereon are first produced by punching and bending sheet metal. The production is usually carried out by machining a uniform piece of sheet metal, so that the retaining tabs are formed in one piece on the contact sheet. Then the contact plates are placed on opposite sides of a PTC element, so that the retaining tabs protruding over the PTC element on one side cross and the retaining tabs protruding beyond the PTC element of the one contact sheet between their free ends and the other contact sheet have a receptacle for one Form an insulating layer. The insulating layer is then introduced into this receptacle with elastic pretensioning of the retaining tabs and placed against the other contact sheet.
  • a uniform heat-generating element is created, which can be further processed as a preassembled unit.
  • a liquid thermally conductive compound is applied to said surface, which is displaced when the contact plates are pressed against the PTC element, so that the contact plates are electrically conductive but with good thermal conductivity against the PTC element applied.
  • the contact plates have spring tongues that rest against the PTC element under elastic pretension and accordingly effect point contacts.
  • the thermally conductive compound can penetrate through openings provided on the contact sheet, in order to get into a gap between the contact sheet and the insulating layer and also underneath any free space there To fill in displacement of air.
  • heat-conductive compound can additionally be applied to this rear side of the contact plate facing away from the PTC element. This can be done before the contact plate is applied against the PTC element and / or afterwards.
  • the thermally conductive mass is preferably an adhesive mass which hardens so that the good thermally conductive connection is also provided by the thermally conductive mass. Due to the tabs, the insulating layer and the contact plate are spring-loaded against the PTC element. The components are joined to form a preassembled unit, so that this preassembled unit can later be handled as a unit, for example for molding around the frame or for installing the heat-generating element in an electrical heating device.
  • the Figures 1 and 2 show the essential components of a heat-generating element of the present invention with a PTC element 2, which is connected with its main side surfaces 4 in an electrically conductive manner to a contact sheet 6.
  • the contact plate 6 has a plurality of spring tongues 8 formed in one piece on the contact plate 6 by punching and bending. These spring tongues 8 are in the Figures 2 and 3 than from one through that Contact surface 10 formed by punching and bending the contact plate 6 formed by the contact plate 6 can be seen, which are in contact with the PTC element 2 at points or in lines rather than over the entire area.
  • Retaining tabs 12 can also be seen, which are formed in one piece on the contact plate 6 by punching and bending and which protrude beyond the contact surfaces 10 of the contact plate 6, which are designed with the dimensions of the main side surface 4.
  • the retaining tabs 12 have an in Fig. 4 with reference numeral 14 marked connecting section, which is bent over from the plane of the contact surface 10 of the one contact plate 6.1 to the contact surface 10 of the other contact plate 6.2.
  • the connecting section 14 accordingly also extends in the vertical direction of the PTC element 2.
  • the connecting section 14 protrudes outwards at an angle of between 35 and 60 ° and to the opposite side.
  • the connecting section 14 merges into a holding section 16 which is aligned parallel to the vertical direction of the PTC element 2 and merges into a contact section 18 which is bent inwards at right angles thereto.
  • each contact sheet 6 also forms an electrical connection lug 20 cut free by punching and bending, which serves for the plug-in contact of the exemplary embodiment shown and which clearly protrudes beyond the other components of the PTC element 2.
  • Positioning stops 21 are each formed by the contact plate 6 between the two connection lugs 20. On the opposite side, there is also a positioning stop 21 per contact sheet, formed by punching and bending the sheet metal material forming the contact sheet.
  • the exemplary embodiment also has ceramic insulating plates which form an exemplary embodiment of an insulating layer 22.
  • this insulating layer 22 projects beyond the PTC element 2 at the edge.
  • the insulating layer 22 accordingly has a larger base area than the contact area 10, the dimensions of which correspond to the main side area 4 of the PTC element 2.
  • the insulating layer protrudes beyond this main side surface and the contact surface by at least 0.5 to 2 cm.
  • the free ends of the opposing spring tongues 8 formed by the contact section 18 and the holder section 16 form a receptacle 24 for the insulating layer 22.
  • the retaining tabs of the contact plates are provided alternately along the longitudinal edges of the PTC element 2.
  • the retaining tabs identified by the reference symbol 12.2 belong to the in Figure 1 upper contact surface of the other contact sheet 6.2, where, however, the retaining tabs marked with reference number 12.1 belong to the lower and thus to the one contact sheet 6.1.
  • the retaining tabs 12.1 of one contact sheet 6.1 are provided between two retaining tabs 12.2 of the other contact sheet 6.2.
  • an insulating and highly thermally conductive compound can be seen, which extends both in the gap between the contact surface 10 and the main side surface 4 and in the gap between a contact surface provided opposite the contact surface 10 and formed by the contact plate 6 28 for the insulating layer 22 and this insulating layer itself.
  • this compound fills a gap which is pressed free by the elastic contact of the spring tongues 8 against the main side surface 4.
  • the elastic contact of the spring tongues 8 there is a good heat-conducting connection between the PTC element 2 and the contact plate 6.
  • the mass 26 can be a hardening, in particular thermosetting plastic mass, for example a two-component silicone, to which a filler made of ceramic and / or metallic powder can be admixed.
  • the contact plates 6 are first prepared by punching and bending. Here we not only cut the contact surface 10 free, but also the retaining tabs 12 are formed, essentially in a geometric shape as shown in Figure 4 can be seen.
  • the compound 26 is then applied to the main side surface 4 of the PTC element 12 and / or the contact surface 10 of the contact sheet 6.
  • the PTC element 2 is placed against the contact surfaces 10 of the two contacts 6.1 and 6.2.
  • the insulating layer 22 is then introduced into the receptacle 24.
  • the free ends of the retaining tabs 12 are thereby forced outwards.
  • the free ends can have a funnel-like configuration in order to be forced outwards as the introduction movement of the insulating layer 22 progresses.
  • the free ends of the retaining tabs 12 can also be pushed outward by an external retaining device, so that the receptacle 24 is kept free on the top for inserting the insulating layer 22.
  • the compound 26 can be applied to it and / or on the outside of the contact sheet 6.
  • the retaining tabs 12 which are elastically flexing back inward, hold the insulating layer 22 in position in the width direction.
  • the contact section 18 rests on an edge 30 of the insulating layer 22 which overlaps the PTC element 2 on the edge side.
  • the Figure 5 shows this with reference to FIG Figures 1-4 described embodiment after the circumferential sheathing with an insulating material which forms a frame identified by reference numeral 32.
  • the frame 32 completely surrounds the PTC element 2. Only the connection lugs 20 protrude beyond the frame 32 on the outside.
  • the frame 32 forms frame openings 34 opposite one another, in which the predominant part of the outer surface of the insulating layer 22 is exposed as a heat-emitting surface 36.
  • the insulating material forming the frame 32 is, for example, a silicone.
  • the insulating material forming the frame is usually fluid-tight against the heat-emitting surface 36 of the insulating layer 22, so that the heat-emitting surface 36 can be directly irradiated by a gaseous or liquid fluid to be heated without having to fear that the fluid will reach the current-carrying paths gets inside the frame 32.
  • the frame 32 forms, on its side protruding from the terminal lugs 20, sealing lips 38 for sealing insertion into a plug receptacle of a heater housing, as shown in FIG EP 3 334 242 A1 is described.
  • connection lugs 20 are at the same height. They are offset from the contact surface 10 by bending inwards. This also results in a stop for the PTC element when it rests against the respective contact surface 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Resistance Heating (AREA)
  • Thermistors And Varistors (AREA)

Claims (9)

  1. Elément produisant de la chaleur comprenant un élément CTP (2), des plaques de contact (6.1; 6. 2), qui sont prévues pour alimenter l'élément PTC (2) avec une polarité différente, et ayant une couche isolante (22), qui repose contre une surface latérale principale de l'une des plaques de contact (6.1; 6.2) opposée à l'élément PTC (2), caractérisé en ce que la couche isolante est formée par une plaque isolante (22), et en ce qu'au moins l'une des plaques de contact (6.1; 6.2) est pourvue de pattes de retenue (12) qui sont appliquées de manière électriquement conductrice sur une surface latérale opposée (4) de l'élément CTP (2) contre laquelle l'autre des feuilles de contact (6.2; 6.1) s'appuie de manière électriquement conductrice sur l'élément PTC (2) avec l'interposition de la plaque isolante (22) et entoure positivement l'élément PTC (2) et la plaque isolante (22), les bords (30) de la plaque isolante (22) entourés positivement par les pattes de retenue (12) dépassant de l'élément PTC (2) au niveau du bord.
  2. Elément chauffant produisant de la chaleur selon la revendication 1, caractérisé en ce que l'élément PTC (2) est maintenu sous précontrainte entre les pattes de retenue (12) de la plaque de contact (6) et une surface de contact (10) de la plaque de contact (6) qui s'appuie de manière électriquement conductrice sur la surface latérale associée (4) de l'élément PTC (2).
  3. Elément chauffant produisant de la chaleur selon les revendications 1 ou 2, caractérisé en ce que l'élément CTP (2) est entouré circonférentiellement par des pattes de retenue (12).
  4. Elément produisant de la chaleur selon l'une des revendications précédentes, caractérisé en ce que chacune des feuilles de contact (6) est pourvue d'une pluralité de languettes de retenue (12), et en ce que les languettes de retenue (12) des feuilles de contact respectives (6.1; 6.2) enserrent alternativement l'élément CTP (2) le long de son bord longitudinal.
  5. Elément produisant de la chaleur selon l'une des revendications précédentes, caractérisé en ce que la feuille de contact (6) présente des languettes élastiques (8) qui sont découpées dans le matériau en feuille formant la feuille de contact et qui sont repliées en direction de l'élément CTP (2) pour former des contacts en appui contre l'élément CTP (2).
  6. Elément produisant de la chaleur selon l'une quelconque des revendications précédentes, caractérisé en ce qu'une masse thermoconductrice (26) est prévue entre l'élément CTP (2) et la plaque de contact (6) et/ou la couche isolante (22).
  7. Elément produisant de la chaleur selon l'une des revendications précédentes, caractérisé en ce que l'élément CTP (2) est complètement entouré d'un cadre (32) en matériau isolant, laissant libre une surface de dissipation de la chaleur (36) formée par la couche isolante (22).
  8. Elément produisant de la chaleur selon l'une quelconque des revendications précédentes, caractérisé en ce que la feuille de contact (6) forme une patte de connexion électrique (20) découpée par poinçonnage et pliage.
  9. Procédé de fabrication d'un élément produisant de la chaleur selon la revendication 1, dans lequel des feuilles de contact (6) avec des pattes de retenue (12) sont produites par poinçonnage et pliage de matériau en feuille, les feuilles de contact (6) sont placées contre des côtés opposés d'un élément CTP (2), de sorte que les pattes de retenue (12) faisant saillie au-delà de l'élément CTP (2) sur un côté se croisent et les pattes de retenue (12.1) d'une plaque de contact (6.1) dépassant d'un côté l'élément PTC (2) en croix, et les pattes de retenue (12) de l'une des plaques de contact (6.1) forment, entre leurs extrémités libres et l'autre plaque de contact (6.2), un logement (24) pour une couche isolante (22), et la couche isolante est introduite dans le logement (24) sous précontrainte élastique des pattes de retenue (12) et est appliquée contre l'autre plaque de contact (6.2).
EP19186522.9A 2018-07-18 2019-07-16 Élément produisant de la chaleur et son procédé de fabrication Active EP3598847B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102018212012.9A DE102018212012A1 (de) 2018-07-18 2018-07-18 Wärmeerzeugendes Element und Verfahren zu dessen Herstellung

Publications (2)

Publication Number Publication Date
EP3598847A1 EP3598847A1 (fr) 2020-01-22
EP3598847B1 true EP3598847B1 (fr) 2021-09-29

Family

ID=67314659

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19186522.9A Active EP3598847B1 (fr) 2018-07-18 2019-07-16 Élément produisant de la chaleur et son procédé de fabrication

Country Status (3)

Country Link
EP (1) EP3598847B1 (fr)
CN (1) CN110740527B (fr)
DE (1) DE102018212012A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018212012A1 (de) * 2018-07-18 2020-01-23 Eberspächer Catem Gmbh & Co. Kg Wärmeerzeugendes Element und Verfahren zu dessen Herstellung
GB2618837A (en) * 2022-05-19 2023-11-22 Finar Module Sagl enclosure for a power resistor assembly

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2606986A (en) * 1951-07-14 1952-08-12 Barber Colman Co Resistance unit
DE3042420A1 (de) * 1980-11-11 1982-06-24 Fritz Eichenauer GmbH & Co KG, 6744 Kandel Elektrischer heizkoerper mit ein oder mehreren flachen, quaderfoermigen heizelementen
US4698614A (en) * 1986-04-04 1987-10-06 Emerson Electric Co. PTC thermal protector
DE3677603D1 (de) * 1986-10-01 1991-03-28 David & Baader Dbk Spezfab Kaltleiter-ptc-heizkoerper.
EP0333906B1 (fr) * 1988-03-25 1993-10-20 David & Baader DBK Spezialfabrik elektrischer Apparate und Heizwiderstände GmbH Résistance chauffante à coefficient de température positif
JP2532502Y2 (ja) * 1991-02-20 1997-04-16 株式会社村田製作所 発熱ユニット
GB0325574D0 (en) * 2003-11-03 2003-12-03 Delphi Tech Inc Electrical heater
ATE382139T1 (de) 2004-02-10 2008-01-15 Catem Gmbh & Co Kg Elektrische heizvorrichtung für niedrige bauhöhen
ES2303167T3 (es) 2005-09-23 2008-08-01 CATEM GMBH & CO. KG Elemento generador de calor de un dispositivo calefactor.
US7985472B2 (en) * 2007-06-22 2011-07-26 Exopack-Technology, Llc Low-gloss dry-erase coating formulation
EP2190258A1 (fr) 2008-11-20 2010-05-26 Behr France Rouffach SAS Caloporteur
EP2276321B1 (fr) * 2009-07-17 2017-04-05 Mahle Behr France Rouffach S.A.S Caloporteur
ES2372527T3 (es) 2009-09-22 2012-01-23 Eberspächer Catem Gmbh & Co. Kg Dispositivo de calefacción eléctrico y procedimiento para su fabricación.
EP2637475B9 (fr) 2012-03-08 2017-01-25 Eberspächer catem GmbH & Co. KG Elément chauffant
JP6590501B2 (ja) * 2015-03-27 2019-10-16 Fdk株式会社 外付けｐｔｃ素子および筒形電池
DE102016224296A1 (de) 2016-12-06 2018-06-07 Eberspächer Catem Gmbh & Co. Kg Elektrische heizvorrichtung
DE102018212012A1 (de) * 2018-07-18 2020-01-23 Eberspächer Catem Gmbh & Co. Kg Wärmeerzeugendes Element und Verfahren zu dessen Herstellung

Also Published As

Publication number Publication date
CN110740527A (zh) 2020-01-31
CN110740527B (zh) 2022-08-30
EP3598847A1 (fr) 2020-01-22
DE102018212012A1 (de) 2020-01-23

Similar Documents

Publication Publication Date Title
EP3334244B1 (fr) Dispositif de chauffage électrique et élément de chauffage ptc pour un tel dispositif de chauffage électrique
EP2608632B1 (fr) Dispositif de chauffage électrique et cadre associé
EP3493650B1 (fr) Dispositif de chauffage électrique
EP2337425B1 (fr) Dispositif de chauffage électrique et élément produisant de la chaleur d'un dispositif de chauffage électrique
EP2607808B1 (fr) Elément générateur de chaleur
EP2608633B1 (fr) Elément générateur de chaleur
EP3101998A1 (fr) 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
EP3772867B1 (fr) Dispositif de chauffage électrique et son procédé de fabrication
EP1916874A2 (fr) Elément d'un dispositif de chauffage produisant de la chaleur
EP2884817B1 (fr) Dispositif de chauffage électrique et son procédé de fabrication
WO2008049619A1 (fr) Élément producteur de chaleur pour un dispositif de chauffage électrique, et son procédé de fabrication
DE102019205848A1 (de) PTC-Heizelement und elektrische Heizvorrichtung mit einem solchen PTC-Heizelement und Verfahren zur Herstellung eines PTC-Heizelementes
DE102019204665A1 (de) PTC-Heizelement und eine elektrische Heizvorrichtung
EP3598847B1 (fr) Élément produisant de la chaleur et son procédé de fabrication
DE102020201571A1 (de) Elektrische Heizvorrichtung und Verfahren zu deren Herstellung
EP3405001B1 (fr) Procédé de fabrication d'un élément chauffant à coefficient de température positif (ptc)
DE102019204472A1 (de) Wärmeerzeugendes Element und elektrische Heizvorrichtung enthaltend ein solches
EP2957840A1 (fr) Dispositif de chauffage électrique
DE102019217453A1 (de) PTC-Heizzelle
DE102018220333A1 (de) Elektrische Heizvorrichtung
DE102018221654A1 (de) PTC-Heizelement und Verfahren zu dessen Herstellung
DE102020113402A1 (de) Elektrische Heizvorrichtung
EP3557155A1 (fr) Dispositif de chauffage électrique
DE102020117366A1 (de) Elektrische Steuervorrichtung, insbesondere für eine elektrische Heizvorrichtung
DE102020202195A1 (de) Elektrische Heizeinrichtung

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20200327

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

RIC1 Information provided on ipc code assigned before grant

Ipc: H05B 3/50 20060101AFI20210324BHEP

Ipc: F24H 3/04 20060101ALI20210324BHEP

Ipc: F24H 9/18 20060101ALI20210324BHEP

Ipc: B60H 1/22 20060101ALI20210324BHEP

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20210429

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502019002377

Country of ref document: DE

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

Ref country code: AT

Ref legal event code: REF

Ref document number: 1435380

Country of ref document: AT

Kind code of ref document: T

Effective date: 20211015

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210929

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211229

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210929

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211229

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210929

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210929

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210929

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20210929

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210929

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211230

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220129

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210929

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210929

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220131

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210929

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210929

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210929

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210929

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210929

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210929

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502019002377

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210929

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20220630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210929

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210929

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20220731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220716

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220731

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220716

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20230731

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20230724

Year of fee payment: 5

Ref country code: DE

Payment date: 20230720

Year of fee payment: 5

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20230716

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20190716

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210929

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210929

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210929

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230716