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EP0991301A1 - Dispositif de chauffage des vitres d' un véhicule - Google Patents

Dispositif de chauffage des vitres d' un véhicule Download PDF

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Publication number
EP0991301A1
EP0991301A1 EP99116820A EP99116820A EP0991301A1 EP 0991301 A1 EP0991301 A1 EP 0991301A1 EP 99116820 A EP99116820 A EP 99116820A EP 99116820 A EP99116820 A EP 99116820A EP 0991301 A1 EP0991301 A1 EP 0991301A1
Authority
EP
European Patent Office
Prior art keywords
window
controlled
electrical power
heater according
heating elements
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP99116820A
Other languages
German (de)
English (en)
Other versions
EP0991301B1 (fr
Inventor
Uwe Dipl.-Ing. Dierker
Karsten Dipl.-Ing. Michels
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.)
Volkswagen AG
Original Assignee
Volkswagen AG
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 Volkswagen AG filed Critical Volkswagen AG
Publication of EP0991301A1 publication Critical patent/EP0991301A1/fr
Application granted granted Critical
Publication of EP0991301B1 publication Critical patent/EP0991301B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H05B3/00—Ohmic-resistance heating
    • H05B3/84—Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields
    • 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
    • H05B2203/035—Electrical circuits used in resistive heating apparatus

Definitions

  • the invention relates to a window heater for motor vehicles according to the preamble of claim 1.
  • the rear windows, but increasingly also the front windows, of motor vehicles are usually equipped with electrical heating elements for heating the rear windows.
  • the window heating of a motor vehicle is used in particular in the cold season to make the window fog-free or to de-ice it.
  • the state of charge of the vehicle battery can become critical, since the low external temperatures and the other electrical consumers that are switched on more often often result in a poor charge balance for the vehicle battery.
  • German patent application 16 30 963 provides for a reduction in the electrical heating output as a function of the voltage of the power source.
  • the known measures make the switching on or off of the electrical heating elements of a window heater dependent on the state of charge of the vehicle battery or on its charge balance or the generator power. The respective operating situation of the motor vehicle is not considered.
  • the invention has for its object to provide a window heater for motor vehicles with an electrically heatable rear or front window, in which, taking into account the operating situation of the motor vehicle, an unnecessarily high battery load when the window heater is activated can be avoided.
  • the operating situation of the motor vehicle is determined by taking into account environmental influences, such as, for example, the driving wind caused by the driving speed and / or the outside temperature, so that the electrical power supplied to the electrical heating elements can be set as a function of the respective operating situation.
  • environmental influences such as, for example, the driving wind caused by the driving speed and / or the outside temperature
  • the electrical power can be set higher to counteract the increased cooling caused by the wind.
  • higher electrical consumer outputs can generally be accepted without any problems, since the generator can feed into the vehicle electrical system with a correspondingly higher generator output.
  • a signal indicating the respective driving speed is present in the vehicle electrical system control of a motor vehicle anyway, so that the driving-speed-dependent control of the heating elements can be implemented with very little additional technical effort.
  • the airstream can also be measured using sensors instead of the indirect determination from the vehicle speed.
  • the electrical power used to operate the electrical heating elements can be increased or changed proportionally as the driving speed increases or according to a predetermined characteristic curve.
  • the characteristic curve can be determined empirically for each vehicle type and depending on different outside temperatures, so that a temperature-dependent and speed-dependent characteristic curve profile is created.
  • Such a characteristic profile can also take into account further parameters that specify the respective operating and environmental situation of the motor vehicle.
  • Such further parameters can be, for example, the interior temperature of the motor vehicle, the air humidity, time information, etc.
  • the pane heater can have several individually or jointly controllable heating elements on the pane, in order to be able to adjust the heating output in accordance with the respective operating situation.
  • the electrical power can also be adjusted by pulsing the heating elements with a variable duty cycle.
  • the heating elements 1 of a rear window, not shown here, of a motor vehicle are connected to a controllable switching device 2, the control input of which is connected to the output of a control device 3.
  • the on-board electrical system voltage U B is also present at the switching device 2 and can be applied to the heating elements 1 via the switching device 2 in a manner determined by the control device 3.
  • the control device 3 receives information about the current driving speed v of the motor vehicle and about further parameters P which specify the current operating situation and / or environmental influences. These parameters P and also the driving speed v can be used by the control device 3 on the basis of a vehicle-specific characteristic diagram stored in a memory 4 for controlling the heating elements 1.
  • the control unit 3 of the rear window heater can extract characteristic data from the memory 4 as a function of the applied values for the driving speed v and with regard to the further parameters P.
  • the switching device 2 enables individual heating elements 1 of the rear window to be controlled separately or all heating elements 1 to be controlled together.
  • the heating elements 1 can be operated in a pulsed manner, the control device 3 being able to change the pulse duty factor of the pulse operation. In this way, a desired rear window heating output can be set precisely depending on the current environmental influences and other operating data.

Landscapes

  • Window Of Vehicle (AREA)
  • Resistance Heating (AREA)
  • Surface Heating Bodies (AREA)
  • Control Of Resistance Heating (AREA)
  • Control Of Electric Motors In General (AREA)
EP99116820A 1998-09-30 1999-09-01 Dispositif de chauffage des vitres d'un véhicule Expired - Lifetime EP0991301B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19845009 1998-09-30
DE19845009A DE19845009A1 (de) 1998-09-30 1998-09-30 Heckscheibenheizung für Kraftfahrzeuge

Publications (2)

Publication Number Publication Date
EP0991301A1 true EP0991301A1 (fr) 2000-04-05
EP0991301B1 EP0991301B1 (fr) 2006-12-13

Family

ID=7882904

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99116820A Expired - Lifetime EP0991301B1 (fr) 1998-09-30 1999-09-01 Dispositif de chauffage des vitres d'un véhicule

Country Status (3)

Country Link
EP (1) EP0991301B1 (fr)
AT (1) ATE348495T1 (fr)
DE (2) DE19845009A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003007662A1 (fr) * 2001-07-09 2003-01-23 Schefenacker Vision Systems Australia Pty Ltd Rechauffeur de miroir
EP2014604A1 (fr) * 2007-06-15 2009-01-14 The Raymond Corporation Protection de verre chauffé, sans capteur, avec commande, pour chariots élévateurs
WO2016027184A1 (fr) * 2014-08-22 2016-02-25 Bombardier Inc. Dispositif et procédé de chauffage commandé de fenêtre de véhicule
US20210229793A1 (en) * 2018-06-06 2021-07-29 Embraer S.A. Aircraft window heating system with regulated dc voltage

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10042563B4 (de) * 2000-08-30 2005-06-16 Audi Ag Verfahren und Vorrichtung zum Steuern der Heizung eines Außenspiegels
DE10058434C2 (de) * 2000-11-24 2003-12-04 Audi Ag Verfahren und Vorrichtung zum Steuern der Heizung eines Außenspiegels
DE102005029411A1 (de) * 2005-06-24 2007-01-04 Audi Ag Vorrichtung und Verfahren zum Betreiben einer Sensoranordnung in einem Kraftfahrzeug
DE102010020311B4 (de) * 2010-05-12 2021-02-11 Audi Ag Verfahren zur Steuerung eines mittels eines Heizungssystems beheizbaren Kfz-Bauteiles eines Kraftfahrzeugs

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4277672A (en) * 1979-12-03 1981-07-07 General Electric Company Control circuit for controlling quantity of heat to electrically heatable windshield
US4357524A (en) * 1980-01-29 1982-11-02 Westinghouse Electric Corp. Electrical heater controller for aircraft window heat control
US4520258A (en) * 1982-04-28 1985-05-28 Bayerische Motoren Werke A.G. System concomitantly controlling passenger compartment and electric auxiliary heating in automatic vehicles
US5325912A (en) * 1991-11-27 1994-07-05 Honda Giken Kogyo Kabushiki Kaisha Air conditioning system with reduced energy consumption during defrosting for an electric vehicle
US5496989A (en) * 1994-05-05 1996-03-05 United Technology Corporation Windshield temperature control system
US5624591A (en) * 1994-09-14 1997-04-29 Glaverbel Heated glazing panel and a circuit for controlling the heat output as a function of the resistance of the heater element and voltage of the power source
US5632917A (en) * 1994-08-08 1997-05-27 Ford Motor Company Electric windshield defroster

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1630963B2 (de) * 1967-12-20 1975-01-30 Dr.-Ing.H.C. F. Porsche Ag, 7000 Stuttgart Anordnung zum Betrieb von elektrischen Verbrauchern In Kraftfahrzeugen
DE3509073C2 (de) * 1984-03-24 1995-04-20 Volkswagen Ag Elektrische Heizung, insbesondere für Kraftfahrzeuge
DE3936638C1 (en) * 1989-11-03 1991-03-14 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De Ensuring electrical power supply in motor vehicle - grouping electrical appliances according to their importance for safety of vehicle
DE4214603C2 (de) * 1992-05-04 1995-10-05 Priesemuth W Schalteinrichtung zum gesteuerten Inbetriebsetzen von elektrischen Einrichtungen
DE4422329C2 (de) * 1993-07-12 2002-12-19 Volkswagen Ag Verfahren und Vorrichtung zum Betreiben eines elektrischen Fahrzeug-Bordnetzes
IT1273067B (it) * 1994-03-22 1997-07-04 Fiat Auto Spa Dispositivo automatico per ridurre il consumo di energia elettrica da parte di un lunotto termico
DE19705416C1 (de) * 1997-02-13 1998-03-26 Daimler Benz Ag Verfahren zur Steuerung der Heizung einer Heckscheibe eines Kraftfahrzeuges sowie Vorrichtung zur Durchführung des Verfahrens

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4277672A (en) * 1979-12-03 1981-07-07 General Electric Company Control circuit for controlling quantity of heat to electrically heatable windshield
US4357524A (en) * 1980-01-29 1982-11-02 Westinghouse Electric Corp. Electrical heater controller for aircraft window heat control
US4520258A (en) * 1982-04-28 1985-05-28 Bayerische Motoren Werke A.G. System concomitantly controlling passenger compartment and electric auxiliary heating in automatic vehicles
US5325912A (en) * 1991-11-27 1994-07-05 Honda Giken Kogyo Kabushiki Kaisha Air conditioning system with reduced energy consumption during defrosting for an electric vehicle
US5496989A (en) * 1994-05-05 1996-03-05 United Technology Corporation Windshield temperature control system
US5632917A (en) * 1994-08-08 1997-05-27 Ford Motor Company Electric windshield defroster
US5624591A (en) * 1994-09-14 1997-04-29 Glaverbel Heated glazing panel and a circuit for controlling the heat output as a function of the resistance of the heater element and voltage of the power source

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003007662A1 (fr) * 2001-07-09 2003-01-23 Schefenacker Vision Systems Australia Pty Ltd Rechauffeur de miroir
EP2014604A1 (fr) * 2007-06-15 2009-01-14 The Raymond Corporation Protection de verre chauffé, sans capteur, avec commande, pour chariots élévateurs
US8084716B2 (en) 2007-06-15 2011-12-27 The Raymond Corporation Heated glass guard with sensorless control for forklift trucks
WO2016027184A1 (fr) * 2014-08-22 2016-02-25 Bombardier Inc. Dispositif et procédé de chauffage commandé de fenêtre de véhicule
US20170273142A1 (en) * 2014-08-22 2017-09-21 Bombardier Inc. Apparatus and method for controlled heating of a vehicle window
US20210229793A1 (en) * 2018-06-06 2021-07-29 Embraer S.A. Aircraft window heating system with regulated dc voltage
US12129013B2 (en) * 2018-06-06 2024-10-29 Embraer S.A. Aircraft window heating system with regulated DC voltage

Also Published As

Publication number Publication date
DE19845009A1 (de) 2000-04-06
EP0991301B1 (fr) 2006-12-13
ATE348495T1 (de) 2007-01-15
DE59914053D1 (de) 2007-01-25

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