EP1967397B1 - Dispositif de chauffage électrique, en particulier pour un véhicule automobile - Google Patents

Dispositif de chauffage électrique, en particulier pour un véhicule automobile Download PDF

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Publication number
EP1967397B1
EP1967397B1 EP07290275A EP07290275A EP1967397B1 EP 1967397 B1 EP1967397 B1 EP 1967397B1 EP 07290275 A EP07290275 A EP 07290275A EP 07290275 A EP07290275 A EP 07290275A EP 1967397 B1 EP1967397 B1 EP 1967397B1
Authority
EP
European Patent Office
Prior art keywords
heating assembly
control element
ptc
assembly according
groups
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.)
Ceased
Application number
EP07290275A
Other languages
German (de)
English (en)
Other versions
EP1967397A1 (fr
Inventor
Bertrand Bisch
Christophe Schmittheisler
Olivier Schunck
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mahle Behr France Rouffach SAS
Original Assignee
Behr France Rouffach SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Behr France Rouffach SAS filed Critical Behr France Rouffach SAS
Priority to EP07290275A priority Critical patent/EP1967397B1/fr
Publication of EP1967397A1 publication Critical patent/EP1967397A1/fr
Application granted granted Critical
Publication of EP1967397B1 publication Critical patent/EP1967397B1/fr
Ceased legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H05B1/00—Details of electric heating devices
    • H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H05B1/0227—Applications
    • H05B1/023—Industrial applications
    • H05B1/0236—Industrial applications for vehicles
    • 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
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • F24H3/0429—For vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • F24H3/0429—For vehicles
    • F24H3/0435—Structures comprising heat spreading elements in the form of fins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • 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
    • F24H9/1872—PTC
    • 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 invention relates to an electrical heating arrangement with PTC elements, in particular for a motor vehicle.
  • FIG EP 1 522 439 A1 An example of such an embodiment is shown in FIG EP 1 522 439 A1 disclosed.
  • the arranged between the contact plates PTC elements and arranged on the outside of the contact plates corrugated fins are held in an electrically insulating plastic frame.
  • the electrical contacting of the contact sheets can be effected in that the contact plates protrude laterally from the frame and a plug connection is provided, wherein the frame can be designed accordingly.
  • the contact plates can also be within the frame Be connected contact rails, which are contacted from the outside, or an electrical conductor is inserted directly into the frame and connected to the contact rails or contact plates.
  • a control of individual heating strands can be done by means of an electronic circuit.
  • This circuit may be integrated, as in the in Fig. 3 to illustrate a conventional structure of a heating device shown, but for reasons of heat it is usually arranged as far as possible from the heating area.
  • an electrical heating arrangement in particular for a motor vehicle, having a heat transfer area for transferring the heat generated to a fluid flowing through the electric heater arrangement, the heat transfer area having a plurality of PTC elements electrically interconnected in a plurality of groups, and each of the groups of a rule element is controllable independently of other groups, and the individual rule element PTC element groups are connected to a common power supply.
  • the heat transfer area forms the core area of a heater of the heating arrangement.
  • At least two control element PTC element groups are interconnected via a first bus bar, which is connected via at least one current conductor to one pole of the power supply, wherein the current conductor at least partially separated running from at least one further, parallel to the first conductor connected, second Conductor is formed, which is connected directly or via a further bus bar, which is formed separately from the first bus bar, with at least one further control element PTC element group.
  • control element PTC element groups are connected to one another via a busbar.
  • the busbars are preferably each connected via a separately formed current conductor with a pole, in particular preferably the negative pole, the power supply.
  • each of the conductors or arranged in series with each of the conductors is preferably provided a separate fuse, which is independent of the one or other of the other fuses. This allows separate protection of individual heating areas of the heater, the example. Different Zones are assigned to the air conditioning of the vehicle interior.
  • the fuses are preferably outside the heat transfer region of the heater assembly, in particular outside of a frame, which is traversed by the vehicle interior air to be supplied, arranged.
  • Each of the current conductors is preferably formed by cables with a cross-sectional area of 5 to 8 mm 2 , more preferably of about 6 mm 2 +/- 1 mm 2 .
  • the current conductors are particularly preferably formed by individually sheathed, separately formed cable. These, in contrast to conventional cables, over which the entire current flows, much thinner auslegbaren cables can be bent easily and therefore easier to assemble.
  • multi-core flat cables can be used. These can be flexibly adapted to the available installation space, at least in one plane, or even lead through narrow gaps, so that they can be laid more easily in relation to the conventionally used cables with a core and the associated larger diameter.
  • Each control element of a control element PTC element group is preferably controllable via a common BUS system.
  • the control elements are, for example, transistors.
  • Each of the control element PTC element group of the heating arrangement preferably has at least one plate-shaped PTC element.
  • This PTC element can be both a ceramic and a plastic PTC element.
  • a plurality of PTC elements is provided in at least one control element PTC element group, wherein the PTC elements are preferably arranged in a row and possibly spaced from each other between contact plates.
  • the function of the contact plates can also be fulfilled directly by corrugated ribs with appropriate design.
  • the electrical heating arrangement preferably has an insulating housing or a frame, on the outside of which at least part of a plug connection for electrical contacting is provided, wherein the plug connection provides a connection for connecting at least two separately formed but parallelly connected current branches.
  • a plug connection provides a connection for connecting at least two separately formed but parallelly connected current branches.
  • the frame is preferably made of polyamide, more preferably PA66, and is injection molded. It can be formed with a corresponding embodiment, but in particular also in several parts, wherein the individual parts can be connected to each other in a known manner, for example by means Verclipsens or screwing. This can be done in the frame by connecting the parts at the same time a fixation of the contact plate PTC elements corrugated fin arrangement.
  • Heating arrangements according to the invention can be provided both as a heater in conjunction with a conventional air conditioner or a conventional heater and in isolation.
  • a two-zone heater assembly 1 serves as a heater in an automotive air conditioner, being arranged in the air flow direction according to a conventional heater.
  • the heating assembly 1 has a frame 2 made of plastic, in this case PA66, which is injection-molded.
  • a plurality of plate-shaped plastic PTC elements 3 between contact plates 4 and disposed therebetween corrugated fins are arranged, as in partial manner in Fig. 2 shown.
  • Fig. 1 are the PTC elements 3 schematically indicated as resistors.
  • the PTC elements 3, the contact plates 4 and the corrugated fins form the core of the auxiliary heater of the heating arrangement 1, which is flowed through by the vehicle interior air to be supplied.
  • one of the contact plates 4 of a pair of contact plates between which PTC elements 3 are arranged protrudes on one side beyond the air-flow area of the frame 2 and is electrically contacted.
  • These contact plates 4 are connected to the positive pole "+" of the power source (not shown in detail) via a common conductor and one in the frame 2 trained plug plugged connector (not shown), wherein within the frame 2, a continuous, common bus bar 5 is provided, which is guided by the corresponding contact plates 4 to the edge of the frame 2 and ends in the socket.
  • the other of the contact plates 4 of a contact plate pair is presently connected on the other side of the frame 2 via an electrically conductive intermediate piece, each with a regulator 6, which is arranged in a presently not air-flow area of the frame. For cooling, however, an air flow can also be provided in this area.
  • the controller 6 are controlled by means of a bus system, indicated in the drawing with "bus".
  • the controller 6 are in turn connected to busbars 7, wherein in the present case two controllers 6, which are assigned in the present case a heating zone, are connected in series with a busbar 7.
  • the busbar 7 is contacted centrally with a current conductor 8, which extends up to an integrated integrated socket 9.
  • the conductor 8 may in the case of a corresponding T- or L-shaped configuration of the busbar 7, so that the same extends to the socket 9, also omitted.
  • each of the continuing current conductors 10 in each case contains a fuse 11 in order to protect the corresponding PTC elements 3 from excessive current flow which would result in overheating of the PTC elements 3.
  • each of the current conductors 10 is connected to the negative pole "-" of the current source, ie the current conductors 10 are connected in parallel with one another.
  • Each of the secondary current conductors 10 in the present case has an electrically conductive cross section of approximately 6 mm 2 .
  • the individual conductors 10 may each be separated from each other be surrounded by an insulator, however, for example, a parallel arrangement of the same possible, so that a flat cable of low height results with parallel juxtaposed conductors.
  • the function of the heater assembly 1 is the following: Between the sockets formed on the frame 2, the vehicle electrical system voltage is applied, wherein - if there is no heating demand - all controller 6 interrupt the circuit, so that no current flows. From one of the zones - from a passenger by hand by means of a corresponding actuator or automatically based on a comparison of a temperature setpoint with a Temperaturistwert and falling below the temperature setpoint by a predetermined amount - a heating request to the corresponding controller 6 via the bus system.
  • the regulator 6 reduces its resistance so that current can flow through the corresponding branch, while the other branches connected in parallel are blocked by the other regulators 6.
  • the current flows to the first contact plate 4, through the PTC elements 3, which are arranged between the first and second contact plate 4, and the second contact plate 4.
  • the material heats up.
  • the heat is released to the outside to the air flowing through the heater, which is supplied to the vehicle interior. Due to the material heating, however, the resistance of the PTC elements 3 increases, so that the current flow as a function of the temperature in the PTC elements 3 is set to a specific value.
  • the second regulator 6, which is assigned to this zone is regulated in such a way that current flows through the branch associated with it, so that the number of heated PTC elements 3 is increased.
  • connection of the individual PTC elements can also be such that a different number of heating stages and / or more or fewer zones are possible.
  • interconnection is essentially independent of the subdivided configuration of the continuing current conductors 10 and of the busbars 7.
  • the busbars are formed divided on both sides of the contact plates. The same applies to the current conductors, so that two parallel circuits are formed, whereby the conductor diameter of all conductors reduced and Flat cable with juxtaposed conductors or separately formed cables can be used.

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  • 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)
  • Air-Conditioning For Vehicles (AREA)
  • Resistance Heating (AREA)

Claims (9)

  1. Dispositif de chauffage électrique (1), en particulier pour un véhicule automobile, comprenant une zone de transfert de chaleur servant au transfert de la chaleur produite, à un fluide traversant le dispositif de chauffage électrique, ou la zone de transfert de chaleur présente une pluralité d'éléments à coefficient de température positif (CTP) connectés électriquement en plusieurs groupes, et chacun des groupes est réglable, indépendamment d'autres groupes, à l'aide d'un élément de réglage (6), et les différents groupes d'éléments à coefficient de température positif (CTP) à élément de réglage sont raccordés à une alimentation en courant électrique commune (+, -), où au moins deux groupes d'éléments à coefficient de température positif (CTP) à élément de réglage sont raccordés entre eux par une première barre de distribution (7) qui est connectée à un pôle (-) de l'alimentation en courant électrique, par au moins un conducteur (8, 10),
    caractérisé en ce que le conducteur (8, 10) est configuré, au moins partiellement, en s'étendant séparément d'au moins un autre deuxième conducteur (8, 10) monté en parallèle par rapport au premier conducteur (8, 10), lequel deuxième conducteur est raccordé directement ou par une autre barre de distribution (7) qui est configurée séparément de la première barre de distribution (7), à au moins un autre groupe d'éléments à coefficient de température positif (CTP) à élément de réglage, où il est prévu un propre coupe-circuit à fusible (11) dans chacun des conducteurs (10) ou bien monté en série par rapport à chacun des conducteurs (8), coupe-circuit à fusible qui est indépendant du ou des autres coupe-circuits à fusible (11).
  2. Dispositif de chauffage selon la revendication 1, caractérisé en ce que, à chaque fois, au moins deux, en particulier précisément deux groupes d'éléments à coefficient de température positif (CTP) à élément de réglage sont raccordés entre eux par une barre de distribution (7), et les barres de distribution (7) sont connectées à un pôle (-) de l'alimentation en courant électrique, à chaque fois par des conducteurs (8, 10) configurés séparément.
  3. Dispositif de chauffage selon la revendication 1 ou 2, caractérisé en ce que les coupe-circuits à fusible (11) sont disposés à l'extérieur de la zone de transfert de chaleur du dispositif de chauffage (1), en particulier à l'extérieur d' un cadre (2) qui peut être traversé par de l'air devant être fourni à l'habitacle du véhicule,
  4. Dispositif de chauffage selon l'une quelconque des revendications précédentes, caractérisé en ce que chacun des conducteurs (10) est formé par des câbles ayant une surface de section de 5 mm2 à 8 mm2, en particulier approximativement de 6 mm2 +/- 1 mm2.
  5. Dispositif de chauffage selon l'une quelconque des revendications précédentes, caractérisé en ce que chaque élément de réglage (6) d'un groupe d'éléments à coefficient de température positif (CTP) à élément de réglage est réglable par un système de bus (bus) commun,
  6. Dispositif de chauffage selon l'une quelconque des revendications précédentes, caractérisé en ce que chacun des groupes d'éléments à coefficient de température positif (CTP) à élément de réglage du dispositif de chauffage (1) présente au moins un élément (3) à coefficient de température positif (CTP) configuré en forme de plaque.
  7. Dispositif de chauffage selon la revendication 6, caractérisé en ce que, dans le cas d'au moins un groupe d'éléments à coefficient de température positif (CTP) à élément de réglage, il est prévu une pluralité d'éléments (3) à coefficient de température positif (CTP).
  8. Dispositif de chauffage selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif de chauffage électrique (1) présente un carter isolant ou un cadre (2) sur le côté extérieur duquel il est prévu au moins une partie d'une fiche de raccordement servant à la mise en contact électrique, où la fiche de raccordement permet de disposer d'une connexion pour un raccordement d'au moins deux dérivations configurées séparément mais montées en parallèle,
  9. Dispositif de chauffage selon l'une quelconque des revendication précédentes, caractérisé en ce que les conducteurs (10) sont formés par des câbles gainés individuellement et configurés séparément les uns des autres.
EP07290275A 2007-03-05 2007-03-05 Dispositif de chauffage électrique, en particulier pour un véhicule automobile Ceased EP1967397B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07290275A EP1967397B1 (fr) 2007-03-05 2007-03-05 Dispositif de chauffage électrique, en particulier pour un véhicule automobile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07290275A EP1967397B1 (fr) 2007-03-05 2007-03-05 Dispositif de chauffage électrique, en particulier pour un véhicule automobile

Publications (2)

Publication Number Publication Date
EP1967397A1 EP1967397A1 (fr) 2008-09-10
EP1967397B1 true EP1967397B1 (fr) 2011-06-15

Family

ID=38157900

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07290275A Ceased EP1967397B1 (fr) 2007-03-05 2007-03-05 Dispositif de chauffage électrique, en particulier pour un véhicule automobile

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EP (1) EP1967397B1 (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19905074C1 (de) 1999-02-08 2000-11-16 Valeo Klimasysteme Gmbh Elektrische Heizvorrichtung, insbesondere PTC-Heizvorrichtung für ein Fahrzeug
DE10229547A1 (de) * 2002-07-01 2004-01-15 Att Automotive Thermo Tech Gmbh Vorrichtung und Regelverfahren zur elektrischen Luftbeheizung mit Wärmetauscherrippen als Widerstandsheizdraht
DE50308976D1 (de) 2003-10-07 2008-02-21 Behr France Rouffach Sas Heizungsanordnung mit PTC-Element, insbesondere für ein Kraftfahrzeug

Also Published As

Publication number Publication date
EP1967397A1 (fr) 2008-09-10

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