EP2315493B1 - Dispositif de chauffage notamment pour une climatisation de véhicule automobile - Google Patents

Dispositif de chauffage notamment pour une climatisation de véhicule automobile Download PDF

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Publication number
EP2315493B1
EP2315493B1 EP09290807.8A EP09290807A EP2315493B1 EP 2315493 B1 EP2315493 B1 EP 2315493B1 EP 09290807 A EP09290807 A EP 09290807A EP 2315493 B1 EP2315493 B1 EP 2315493B1
Authority
EP
European Patent Office
Prior art keywords
electric resistance
heater
current
delay circuit
heaters
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.)
Revoked
Application number
EP09290807.8A
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German (de)
English (en)
Other versions
EP2315493A1 (fr
Inventor
Thomas Blum
Michel Brun
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mahle Behr France Rouffach SAS
Original Assignee
Mahle Behr France Rouffach SAS
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Filing date
Publication date
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Application filed by Mahle Behr France Rouffach SAS filed Critical Mahle Behr France Rouffach SAS
Priority to EP09290807.8A priority Critical patent/EP2315493B1/fr
Priority to CN2010105120622A priority patent/CN102118892A/zh
Priority to US12/908,490 priority patent/US20110091190A1/en
Publication of EP2315493A1 publication Critical patent/EP2315493A1/fr
Application granted granted Critical
Publication of EP2315493B1 publication Critical patent/EP2315493B1/fr
Revoked 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
    • 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 a heating device, in particular for a motor vehicle air conditioning system according to the preamble of claim 1, and to a method for operating such a heating device according to the preamble of claim 11.
  • Automotive air conditioning systems are used for heating and cooling of air, which is supplied to a motor vehicle interior.
  • Electric current is conducted through the electrical resistance heaters and, due to the electrical resistance of the electrical resistance heaters, they heat up, so that the air supplied to the motor vehicle interior can be heated by passing air past the electrical resistance heaters.
  • the electrical resistance heaters are energized with current in pulse width modulation (PWM).
  • PWM pulse width modulation
  • the electrical heating power of the electrical resistance heaters is controlled in such a way that the pulse width modulation is changed. This means that, for an increase in the electric heating power, the turn-on time is lengthened and the turn-off time is shortened, and conversely, with a decrease in the electric heater power, the turn-on time is shortened and the turn-off time is increased.
  • the electric Electricity for the resistance heaters comes from a vehicle electrical system as a power source of the motor vehicle.
  • the pulse width modulated current is delayed by a microcontroller before being fed to the individual electrical resistance heaters.
  • the resistance heaters thus have switch-on times which are not simultaneous but are delayed in time and thus temporally successive.
  • the maximum current peak requirement for the resistance heaters can be reduced because all resistance heaters are not switched on or energized at the same time, ie the switch-on times of the electrical resistance heaters are not identical.
  • the microcontroller which generally has a processor and can thus execute a program or a software, is generally arranged in the motor vehicle air conditioning system, in particular in the area of the resistance heating devices.
  • microcontrollers are expensive to manufacture and therefore expensive and thus also prone to failure during operation.
  • the EP 0 371 295 A2 discloses a radiant heater with a related circuit.
  • the EP 1 681 755 A2 discloses a method for operating an electrical load.
  • the object of the present invention is therefore to provide a heating device, in particular for motor vehicle air conditioners, and a method for operating such a heating device, in which and at the time of switching on or energizing electrical resistance heating devices With a small technical effort, a small maximum current demand occurs.
  • the heater should be inexpensive to manufacture and work reliably in operation.
  • a heating device in particular for an air conditioning system, comprising a housing, preferably a fan, preferably a refrigerant evaporator for cooling an air to be supplied to a vehicle interior, at least two electrical resistance heaters for heating the air to be supplied to the vehicle interior, wherein the at least two electrical resistance heaters can be supplied with electric current a device for energizing at least one electrical resistance heater with a time delay with respect to another electrical resistance heater, the device comprising at least one delay circuit, preferably two delay circuits, and / or the device consisting of at least one delay circuit, preferably two delay circuits.
  • the at least one delay circuit is at least one, in particular exclusively, analog delay circuit and / or the at least one delay circuit has no processor and / or of the at least one delay circuit no program executable and / or the at least one delay circuit is an electrical and / or electronic circuit, in particular without processor.
  • the delay circuit is thus a very simple electrical and / or electronic circuit, which in particular has no processor.
  • the delay circuit can be made simple and inexpensive, so that the high cost of an expensive and expensive microcontroller can be saved.
  • the at least one delay circuit comprises at least one capacitor and / or at least one resistor. It is also possible if in addition an inductance is provided.
  • the at least one delay circuit comprises as electrical and / or electronic components exclusively at least one capacitor and / or at least one resistor. Due to the use of simple electronic components, such as a capacitor and a resistor, the delay circuit can be made simple and inexpensive.
  • the at least one electrical resistance heater is supplied by electric current in pulse width modulation.
  • the energizing of the at least two electrical resistance heating devices thus corresponds to the passage of current through the at least two electrical resistance heating devices during the switch-on of the pulse width modulated current.
  • At least one electrical resistance heater with pulse-width-modulated current with respect to another electrical resistance heater can be supplied with a time delay.
  • the maximum current demand for the at least two electrical resistance heaters, in particular for all electrical resistance heaters, can thus be reduced at the beginning of the turn-on times.
  • the at least one electrical resistance heater is at least one PTC heater. It is particularly advantageous if the at least one resistance heater or a plurality of resistance heaters are combined to form a module and advantageously the electrical control unit can be connected or connected to this module. An electrical resistance heater is then, so to speak, a heating element of the module.
  • the at least two electrical resistance heating devices are electrically connected in parallel.
  • each of the electrical resistance heating devices connected in parallel is each connected to a parallel-current line and the parallel-current lines are connected to a central-current line.
  • a delay circuit is connected in series with the resistance heating devices connected in parallel in parallel-connected resistance heating devices.
  • At least two delay switching devices are connected in parallel and / or in series.
  • a method for operating a heating device in particular for a motor vehicle air conditioning system, in particular comprising the steps of: passing electric current through at least two electrical resistance heating devices, passing air through the heating device the motor vehicle air conditioning system, generating heat energy by means of the at least two electrical resistance heaters by the electrical energy is converted into heat energy, transferring the thermal energy generated by the at least two electrical resistance heaters on the air to be heated, which is preferably passed through the motor vehicle air conditioning, so that the When the at least two electrical resistance heating devices are energized, at least one electrical resistance heating device is supplied with power delayed with respect to another electrical resistance heating device in order to reduce the maximum current peak demand for the at least two electrical resistance heating devices when the at least two electrical resistance heating devices are energized and / or switched on , wherein the current is delayed analogously and / or the current is delayed without a program or a Software is running.
  • the current in particular by means of at least one delay circuit, is delayed only analogously.
  • the current conducted by the at least two electrical resistance heating devices is pulse width modulated and preferably the pulse width modulation is changed, in particular switching on and off times are changed in order to control and / or regulate the electrical power of the at least two electrical resistance heaters.
  • the current is delayed by at least one delay circuit in each case for an electrical resistance heater.
  • the at least two electrical resistance heating devices are supplied with current in the high-voltage range, for example with a voltage of at least 60 V, 200 V or 300 V.
  • the motor vehicle air conditioning system expediently comprises at least one air guiding device, in particular an air flap, and / or at least one air duct and / or at least one heat exchanger through which the coolant of an internal combustion engine flows for heating the air to be supplied to the motor vehicle interior and / or a control unit.
  • cooling fins are arranged on the at least two electrical resistance heating devices in order to increase the surface for heating the air by means of the current conducted by the two electrical resistance heating devices.
  • PTC heaters Positive Temperature Coefficient
  • PTC heaters are conductive materials that have electrical resistance and are able to conduct electricity better at lower temperatures than at higher temperatures. Their electrical resistance thus increases with increasing temperature.
  • the PTC heater is generally made of ceramic, which is a PTC thermistor. This raises regardless of the boundary conditions - such. Applied voltage, nominal resistance, or air quantity at the PTC heater - a very uniform surface temperature at the PTC heater.
  • Fig. 1 is a switching arrangement with three formed as PTC heaters 2 concerned with heating the air guided by the automotive air conditioning system.
  • the PTC heaters 2 are connected in parallel and are powered by a power source 4, namely a vehicle electrical system 5 of the motor vehicle outside the motor vehicle air conditioning, with electric power.
  • the current source 4 provides current in pulse width modulation available.
  • the current in pulse width modulation is thereby passed from the power source 4 through central power lines 8 as power lines 6 to parallel flow lines 7.
  • the electric current in pulse width modulation is passed through the PTC heaters 2.
  • a delay circuit 3 is installed in each case.
  • the delay circuit 3 does not have a processor, ie it can thus also execute no program or software and is essentially equipped with simple electrical and / or electronic components, for example at least one capacitor and / or at least one resistor.
  • the delay circuit 3 is thus particularly simple and inexpensive to manufacture.
  • Fig. 3 is the temporal voltage curve of the guided by the three PTC heaters 2 current in pulse width modulation.
  • the time t is plotted on the abscissa, ie the horizontal axis.
  • the electric current is conducted in pulse modulation by the PTC heaters 2, that is, during a turn-on time T e current is passed through the PTC-Heinz wornen 2 and during a turn-off time T a no current is passed through the PTC heaters 2.
  • the duration of the turn-on time T e and the turn-off time T a can be changed by the current source 4 and thereby the electrical heating power of the PTC heaters 2 is changed.
  • Fig. 2 the switching arrangement with the three PTC heaters 2 and the two delay circuits 3 is shown in a second embodiment.
  • the delay circuit 3 for the in Fig. 2 PTC heater 2 shown below is not directly connected to the central power line 8, but is connected to the parallel current line 7 between the delay circuit 3 and the center PTC heater 2.
  • the delay circuit 3 already receives delayed current, which has been delayed by the delay circuit 3 for the average PTC heater 2.
  • the delay times ⁇ t of the delay circuits 3 for the PTC center heater 2 and the lower PTC heater 2 are thus the same.

Landscapes

  • Air-Conditioning For Vehicles (AREA)

Claims (14)

  1. Dispositif de chauffage comprenant
    - au moins deux dispositifs de chauffage à résistance électrique (1) servant au chauffage de l'air à fournir à l'habitacle d'un véhicule, où les dispositifs de chauffage à résistance électrique (1) au moins au nombre de deux peuvent être alimentés en courant électrique,
    - un dispositif (3) pour alimenter en courant au moins un dispositif de chauffage à résistance électrique (1) ayant un temps de retard par rapport à un autre dispositif de chauffage à résistance électrique (1),
    caractérisé
    en ce que le dispositif (3) se compose au moins d'un circuit de temporisation (3), où le dispositif de chauffage à résistance électrique (1) au moins au nombre de un peut être alimenté en courant électrique par modulation de largeur d'impulsions et, grâce au circuit de temporisation (3) au moins au nombre de un, au moins un dispositif de chauffage à résistance électrique (1) peut être alimenté en courant par modulation de largeur d'impulsions, avec un temps de retard par rapport à un autre dispositif de chauffage à résistance électrique (1).
  2. Dispositif de chauffage selon la revendication 1, caractérisé en ce que le dispositif (3) se compose de deux circuits de temporisation (3).
  3. Dispositif de chauffage selon la revendication 1 ou 2, caractérisé en ce que le circuit de temporisation (3) au moins au nombre de un est au moins un circuit de temporisation (3), en particulier exclusivement analogique, et / ou le circuit de temporisation (3) au moins au nombre de un ne présente aucun processeur et / ou aucun programme ne peut être exécuté par le circuit de temporisation (3) au moins au nombre de un et / ou le circuit de temporisation (3) au moins au nombre de un est un circuit électrique et / ou électronique, en particulier sans processeur.
  4. Dispositif de chauffage selon les revendications 1, 2 ou 3, caractérisé en ce que le circuit de temporisation (3) au moins au nombre de un comprend au moins un condensateur et / ou au moins une résistance.
  5. Dispositif de chauffage selon la revendication 4, caractérisé en ce que le circuit de temporisation (3) au moins au nombre de un comprend, comme composants électriques et / ou électroniques, exclusivement au moins un condensateur et / ou au moins une résistance.
  6. Dispositif de chauffage selon l'une quelconque ou plusieurs des revendications précédentes, caractérisé en ce que le dispositif de chauffage à résistance électrique (1) au moins au nombre de un est au moins un dispositif de chauffage (2) à coefficient de température positif CTP.
  7. Dispositif de chauffage selon l'une quelconque ou plusieurs des revendications précédentes, caractérisé en ce que les dispositifs de chauffage à résistance électrique (1) au moins au nombre de deux sont montés électriquement en parallèle.
  8. Dispositif de chauffage selon la revendication 7, caractérisé en ce que chacun des dispositifs de chauffage à résistance électrique (1) montés en parallèle sont connectés à chaque fois à une ligne de courant parallèle (7), et les lignes de courant parallèles (7) sont connectées à une ligne de courant centrale (8).
  9. Dispositif de chauffage selon la revendication 7 ou 8, caractérisé en ce que dans des dispositifs de chauffage à résistance (1), montés en parallèle, un circuit de temporisation (3) est monté à chaque fois en série par rapport aux dispositifs de chauffage à résistance (1) montés en parallèle.
  10. Dispositif de chauffage selon la revendication 9, caractérisé en ce qu'au moins deux dispositifs de commutation (3) fonctionnant par temporisation sont montés en parallèle et / ou en série.
  11. Procédé de fonctionnement d'un dispositif de chauffage pour un système de climatisation d'un véhicule automobile, ledit procédé comprenant les étapes consistant :
    - à faire passer du courant électrique à travers au moins deux dispositifs de chauffage à résistance électrique (1),
    - à faire circuler de l'air à travers le dispositif de chauffage,
    - à produire de l'énergie thermique au moyen des dispositifs de chauffage à résistance électrique (1) au moins au nombre de deux, tandis que l'énergie électrique est transformée en énergie thermique,
    - à transmettre à l'air à chauffer, l'énergie thermique produite par les dispositifs de chauffage à résistance électrique (1) au moins au nombre de deux, de sorte que l'air se réchauffe, où
    - au cours de l'alimentation en courant fourni aux dispositifs de chauffage à résistance électrique (1) au moins au nombre de deux, au moins un dispositif de chauffage à résistance électrique (1) est alimenté en courant avec un temps de retard par rapport à un autre dispositif de chauffage à résistance électrique (1), dans le but, au cours de l'alimentation en courant et / ou lors de la mise en marche des dispositifs de chauffage à résistance électrique (1) au moins au nombre de deux, de réduire les besoins de pointe maximums en courant pour les dispositifs de chauffage à résistance électrique (1) au moins au nombre de deux,
    caractérisé en ce que le courant est mis en circuit avec retard, de manière analogique, et / ou le courant est mis en circuit avec retard, sans l'exécution d'un programme ni d'un logiciel, où le dispositif de chauffage à résistance électrique (1) au moins au nombre de un est alimenté en courant électrique par modulation de largeur d'impulsions et, grâce au moins à un circuit de temporisation (3), au moins un dispositif de chauffage à résistance électrique (1) est alimenté en courant par modulation de largeur d'impulsions, avec un temps de retard par rapport à un autre dispositif de chauffage à résistance électrique (1).
  12. Procédé selon la revendication 11, caractérisé en ce que le courant est mis en circuit avec retard, exclusivement de façon analogique, en particulier au moyen au moins d'un circuit de temporisation (3).
  13. Procédé selon la revendication 11 ou 12, caractérisé en ce que le courant, qui passe à travers les dispositifs de chauffage à résistance électrique (1) au moins au nombre de deux, est à modulation de largeur d'impulsions et, de préférence, la modulation de largeur d'impulsions est modifiée, en particulier les temps de mise en marche et d'arrêt sont modifiés, pour piloter et / ou réguler la puissance électrique des dispositifs de chauffage à résistance électrique (1) au moins au nombre de deux.
  14. Procédé selon l'une quelconque ou plusieurs des revendications 11 à 13, caractérisé en ce que le courant provenant au moins d'un circuit de temporisation (3) est mis en circuit avec retard à chaque fois pour un dispositif de chauffage à résistance électrique (1).
EP09290807.8A 2009-10-21 2009-10-21 Dispositif de chauffage notamment pour une climatisation de véhicule automobile Revoked EP2315493B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP09290807.8A EP2315493B1 (fr) 2009-10-21 2009-10-21 Dispositif de chauffage notamment pour une climatisation de véhicule automobile
CN2010105120622A CN102118892A (zh) 2009-10-21 2010-10-19 特别用于汽车空调设备的加热装置
US12/908,490 US20110091190A1 (en) 2009-10-21 2010-10-20 Heater particularly for a motor vehicle hvac system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09290807.8A EP2315493B1 (fr) 2009-10-21 2009-10-21 Dispositif de chauffage notamment pour une climatisation de véhicule automobile

Publications (2)

Publication Number Publication Date
EP2315493A1 EP2315493A1 (fr) 2011-04-27
EP2315493B1 true EP2315493B1 (fr) 2017-05-10

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ID=41818722

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EP09290807.8A Revoked EP2315493B1 (fr) 2009-10-21 2009-10-21 Dispositif de chauffage notamment pour une climatisation de véhicule automobile

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US (1) US20110091190A1 (fr)
EP (1) EP2315493B1 (fr)
CN (1) CN102118892A (fr)

Families Citing this family (10)

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Publication number Priority date Publication date Assignee Title
EP2315493B1 (fr) 2009-10-21 2017-05-10 Mahle Behr France Rouffach S.A.S Dispositif de chauffage notamment pour une climatisation de véhicule automobile
DE102011057105B4 (de) * 2011-12-28 2016-11-17 Webasto Ag Elektrische Fahrzeugheizvorrichtung
CN102991303A (zh) * 2012-11-15 2013-03-27 柳州易舟汽车空调有限公司 车用空调控制器
FR3008844B1 (fr) * 2013-07-22 2015-08-07 Valeo Systemes Thermiques Systeme de gestion de resistance chauffante a coefficient de temperature positif d'un equipement de chauffage electrique auxiliaire de vehicule automobile
KR101518924B1 (ko) * 2013-12-10 2015-05-11 현대자동차 주식회사 친환경 자동차의 히터 제어장치 및 방법
CN105828461B (zh) * 2016-05-16 2022-04-26 苏州经贸职业技术学院 一种电加热设备关机延时降温控制电路及降温保护方法
DE102018200433A1 (de) * 2018-01-11 2019-07-11 Eberspächer Catem Gmbh & Co. Kg Elektrische Heizvorrichtung
DE102018133529A1 (de) 2018-12-21 2020-06-25 Siqens Gmbh Brennersystem sowie Verfahren zum Bereitstellen von thermischer Energie
DE102020203130A1 (de) * 2020-03-11 2021-09-16 Mahle International Gmbh Heizungsanordnung
DE102020117481A1 (de) 2020-07-02 2022-01-05 Audi Aktiengesellschaft Heizeinrichtung für ein Kraftfahrzeug

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"RC-Glied", 7 August 2009 (2009-08-07), XP055615535, Retrieved from the Internet <URL:https://de.wikipedia.org/w/index.php?title=RC-Glied&oldid=63067088>
BENNY: "Kondensator Verzögerung", 29 May 2018 (2018-05-29), pages 11pp, XP055615497, Retrieved from the Internet <URL:https://www.techniker-forum.de/thema/kondensator-verzoegerung.32775/> [retrieved on 20180212]
FRANZ RAINER: "Forum: Analoge Elektronik Schaltungstechnik Nochmal Einschaltverzogerung: RC-Glied berechnen+Schaltplan", 14 June 2009 (2009-06-14), XP055615537, Retrieved from the Internet <URL:https://www.mikrocontroller.net/topic/140905>
JHERZ: "Transistor als Schalter mit Verzögerung", 26 October 2007 (2007-10-26), XP055615504
PATRICK SCHNABEL: "Einschaltverzögerung", XP055615501, Retrieved from the Internet <URL:http:ilwww.elektronik-magazin.de/pageleinschaltverzoegerung·7>
THOMAS SCHAERER: "Einschaltstrombegrenzung fur Netzteile mit mittelgrossen Ringkerntrafos, ohne Trafo-Sekundarspannung u.a. fur medizinische Anwendung", 13 September 2005 (2005-09-13), XP055615522, Retrieved from the Internet <URL:http://www.elektronik-kornpendium.de/public/schaerer/onilim2.htm>

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EP2315493A1 (fr) 2011-04-27
US20110091190A1 (en) 2011-04-21

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