US20110091190A1 - Heater particularly for a motor vehicle hvac system - Google Patents

Heater particularly for a motor vehicle hvac system Download PDF

Info

Publication number
US20110091190A1
US20110091190A1 US12/908,490 US90849010A US2011091190A1 US 20110091190 A1 US20110091190 A1 US 20110091190A1 US 90849010 A US90849010 A US 90849010A US 2011091190 A1 US2011091190 A1 US 2011091190A1
Authority
US
United States
Prior art keywords
electric resistance
current
resistance heaters
heater
delay circuit
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.)
Abandoned
Application number
US12/908,490
Other languages
English (en)
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
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=41818722&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=US20110091190(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Behr France Rouffach SAS filed Critical Behr France Rouffach SAS
Assigned to BEHR FRANCE ROUFFACH SAS reassignment BEHR FRANCE ROUFFACH SAS ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BRUN, MICHEL, BLUM, THOMAS
Publication of US20110091190A1 publication Critical patent/US20110091190A1/en
Abandoned legal-status Critical Current

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
    • 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 heater particularly for a motor vehicle HVAC system according to the preamble of claim 1 and to a method for operating a heater of this type according to the preamble of claim 12 .
  • Electric heaters or resistance heaters are used for heating the air, particularly in hybrid or electric vehicles.
  • An electric current is passed through the electric resistance heaters and because of the electric resistance of the electric resistance heaters, they become heated, so that the air supplied to the vehicle interior can be heated by passing the air past the electric resistance heaters.
  • the electric resistance heaters are supplied with current in pulse width modulation (PWM).
  • PWM pulse width modulation
  • the electric heat output of the electric resistance heaters is controlled to the effect that the pulse width modulation is changed. This means that for an increase in the electric heat output the turn-on time is lengthened and the turn-off time shortened and conversely during a reduction of the electric heat output the turn-on time is shortened and the turn-off time increased.
  • the electric current for the electric resistance heaters originates from an on-board electrical system as the current source of the motor vehicle.
  • the pulse-width-modulated current before being supplied to the individual electric resistance heaters is delayed in time by a microcontroller.
  • the electric resistance heaters thereby have turn-on times that are not simultaneous but delayed in time and thereby sequential in time.
  • the maximum current peak requirement for the electric resistance heaters can be reduced thereby, because all electric resistance heaters are not turned on or supplied with current at the same time; i.e., the turn-on times of the electric resistance heaters are not identical.
  • the microcontroller which generally has a processor and thereby can run a program or software, is thereby generally arranged in the motor vehicle HVAC system, particularly in the area of the electric resistance heaters. Microcontrollers of this type are time-consuming to produce, however, and thereby expensive and thereby in addition prone to failure during operation.
  • the heater should be inexpensive to produce and reliable to operate.
  • a heater particularly for an HVAC unit, comprising a housing, preferably a fan, preferably a coolant evaporator for cooling air to be supplied to the vehicle interior, at least two electric resistance heaters for heating the air to be supplied to the vehicle interior, whereby the at least two electric resistance heaters can be supplied with electric current, and a device for supplying current to at least one electric resistance heater with a time delay relative to another electric resistance heater, whereby the device comprises at least one delay circuit, preferably two delay circuits, and/or the device comprises at least one delay circuit, preferably two delay circuits.
  • the at least one delay circuit is at least one, particularly exclusively, analog delay circuit and/or the at least one delay circuit has no processor and/or no program can be run by the at least one delay circuit and/or the at least one delay circuit is an electric and/or electronic circuit, particularly without a processor. Therefore no digital signals or information can be processed in the at least one delay circuit.
  • the delay circuit is therefore an electric and/or electronic circuit with a very simple structure, which in particular has no processor. Therefore, the delay circuit can be produced simply and at reasonable cost, so that the high cost for an expensive and time-consuming microcontroller can be economized.
  • the at least one delay circuit comprises at least one capacitor and/or at least one resistor. It is also possible to provide an inductor in addition.
  • the at least one delay circuit comprises exclusively at least one capacitor and/or at least one resistor as an electric and/or electronic component. Because simple electronic components are used, for example, a capacitor and a resistor, the delay circuit can be produced simply and at reasonable cost.
  • At least one electric resistance heater can be supplied with pulse-width-modulated current delayed in time relative to another electric resistance heater with the at least one delay circuit.
  • the maximum current peak requirement for the at least two electric resistance heaters, particularly for all electric resistance heaters, can be reduced thereby at the beginning of the turn-on times.
  • the at least one electric resistance heater is at least one PTC heater. It is especially advantageous, in this case, if the at least one resistance heater or a majority of electric resistance heaters are combined into a module and advantageously the electric control unit can be or is connected to this module. An electric resistance heater is then, so to speak, a heating section of the module.
  • the at least two electric resistance heaters are connected electrically parallel.
  • each of the parallel connected electric resistance heaters are each connected to a parallel power line and the parallel power lines are connected to a central power line.
  • one delay circuit each is connected in series to the parallel connected electric resistance heaters.
  • At least two delay circuit devices are connected parallel and/or in series.
  • the method of the invention for operating a heater particularly for a vehicle HVAC system, particularly comprises the steps: conduction of electric current through at least two electric resistance heaters, preferably conduction of air through the heater of the vehicle HVAC system, generation of thermal energy by the at least two electric resistance heaters by converting electrical energy into thermal energy, preferably the transfer of the thermal energy generated by the at least two electric resistance heaters to the air to be heated, which preferably is passed through the vehicle HVAC system, so that the air becomes heated, whereby during the supplying of current to the at least two electric resistance heaters, at least one electric resistance heater is supplied with current delayed in time relative to another electric resistance heater, in order to reduce the maximum current peak requirement for the at least two electric resistance heaters during the supplying of current and/or the turning on of the at least two electric resistance heaters, whereby the current is delayed in an analog manner and/or the current is delayed without a program or software being run.
  • the current is delayed exclusively in an analog manner, particularly by at least one delay circuit.
  • the current passed through the at least two electric resistance heaters is pulse-width-modulated and preferably the pulse width modulation is changed, particularly the turn-on and turn-off times are changed, in order to control and/or to regulate the electric power of the at least two electric resistance heaters.
  • the current is delayed by at least one delay circuit in each case for one electric resistance heater.
  • the at least two electric resistance heaters 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 vehicle HVAC system comprises at least one air guiding device, particularly a ventilation flap, and/or at least one air passage and/or at least one heat exchanger through which coolant from a combustion engine flows, for heating the air supplied to the vehicle interior, and/or a control unit.
  • cooling fins are arranged at the at least two electric resistance heaters, in order to increase the surface for heating the air by current passed through the two electric resistance heaters.
  • PTC heaters are current- conducting materials that have an electric resistance and can conduct current better at lower temperatures than at higher temperatures. Their electric resistance therefore increases with increasing temperature.
  • the PTC heater generally comprises ceramic, which is a PTC thermistor. Independent of the boundary conditions, such as, e.g., applied voltage, nominal resistance, or volume of air at the PTC heater, a very uniform surface temperature arises at the PTC heater.
  • FIG. 1 shows a circuit arrangement with three electric resistance heaters and two delay circuits in a first exemplary embodiment
  • FIG. 2 shows a circuit arrangement with three electric resistance heaters and two delay circuits in a second exemplary embodiment
  • FIG. 3 shows the time voltage course of a pulse-width-modulated current for the three electric resistance heaters.
  • the time voltage course of the current passed through the three PTC heaters 2 in pulse width modulation is shown in FIG. 3 .
  • the time t is plotted on the abscissa, i.e., the horizontal axis.
  • the electric current is passed through PTC heaters 2 in pulse modulation; i.e., during a turn-on time T e , current is passed through PTC heaters 2 and during a turn-off time T a no current is passed through PTC heaters 2 .
  • the duration of the turn-on time T e and the turn-off time T a in this regard can be changed by current source 4 and thereby the electric heat output of PTC heaters 2 is changed.
  • FIG. 3 shows the time voltage course of the pulse-width-modulated current for the middle PTC heater in FIG. 1 and the top curve in FIG. 3 shows the time voltage curve of the pulse-width-modulated current of PTC heaters 2 shown at the bottom in FIG. 1 .
  • the start of the turn-on time T e here is delayed in each case by a delay time ⁇ t.
  • Delay circuit 3 for the middle PTC heater, shown in FIG. 1 thereby delays the current provided by current source 4 by the delay time ⁇ t and the delay circuit 3 , for the bottom PTC heater 2 in FIG. 1 , therefore delays the current from current source 4 by two delay times ⁇ t.
  • a phase offset of the pulse-width-modulated current therefore occurs in PTC heaters 2 and parallel power lines 7 .
  • the maximum current peak requirement for the three PTC heaters 2 at the beginning of the turn-on times T e can be reduced thereby.
  • Delay circuit 3 for PTC heater 2 shown at the bottom in FIG. 2 , is not connected directly to central power line 8 , but is connected to parallel power line 7 between delay circuit 3 and middle PTC heater 2 . Delay circuit 3 therefore receives the already delayed current, which has been delayed by delay circuit 3 for the middle PTC heater 2 .
  • the delay times ⁇ t of delay circuits 3 for the middle PTC heater 2 and for the bottom PTC heater 2 are thereby the same.

Landscapes

  • Air-Conditioning For Vehicles (AREA)
US12/908,490 2009-10-21 2010-10-20 Heater particularly for a motor vehicle hvac system Abandoned US20110091190A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP09290807.8A EP2315493B1 (de) 2009-10-21 2009-10-21 Heizeinrichtung insbesondere für eine Kraftfahrzeugklimaanlage
EPEP09290807.8 2009-10-21

Publications (1)

Publication Number Publication Date
US20110091190A1 true US20110091190A1 (en) 2011-04-21

Family

ID=41818722

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/908,490 Abandoned US20110091190A1 (en) 2009-10-21 2010-10-20 Heater particularly for a motor vehicle hvac system

Country Status (3)

Country Link
US (1) US20110091190A1 (de)
EP (1) EP2315493B1 (de)
CN (1) CN102118892A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110030729A (zh) * 2018-01-11 2019-07-19 埃贝赫卡腾有限两合公司 电加热设备
DE102020117481A1 (de) 2020-07-02 2022-01-05 Audi Aktiengesellschaft Heizeinrichtung für ein Kraftfahrzeug

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2315493B1 (de) 2009-10-21 2017-05-10 Mahle Behr France Rouffach S.A.S Heizeinrichtung insbesondere für eine Kraftfahrzeugklimaanlage
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
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

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4639579A (en) * 1984-05-15 1987-01-27 Thorn Emi Domestic Appliances Limited Heating apparatus
US5004892A (en) * 1988-11-30 1991-04-02 E.G.O. Elektro-Gerate Blanc U. Fischer Radiant element
US5070229A (en) * 1988-03-28 1991-12-03 Nissan Motor Co., Ltd. Window heater controlling apparatus providing a gradual heating voltage
US5153410A (en) * 1991-05-28 1992-10-06 Paccar Inc. Method and apparatus for heating the cylinder of a vehicle door lock utilizing timing means
US6078024A (en) * 1997-05-27 2000-06-20 Denso Corporation Air conditioning apparatus having electric heating member integrated with heating heat exchanger
US20070053131A1 (en) * 2005-01-18 2007-03-08 Beru Ag Method for operating an electrical device
US20070119847A1 (en) * 2005-11-25 2007-05-31 Hyundai Motor Company Multistage control system of positive temperature coefficient heater and method thereof

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5629469A (en) 1979-08-16 1981-03-24 Sony Corp Switching control circuit
DE4419006A1 (de) 1994-05-31 1995-12-07 Hella Kg Hueck & Co Pulsweitenmodulierter Schaltwandler zum Betrieb elektrischer Verbraucher
DE19738318C5 (de) * 1997-09-02 2014-10-30 Behr Gmbh & Co. Kg Elektrische Heizeinrichtung für ein Kraftfahrzeug
EP1253808B1 (de) 2000-05-23 2005-12-21 Catem GmbH & Co.KG Elektrische Heizvorrichtung, insbesondere für den Einsatz in Kraftfahrzeugen
EP1416770B2 (de) 2002-10-30 2009-05-20 catem GmbH & Co.KG Elektrische Heizvorrichtung mit mehreren Heizelementen
DE102006060828A1 (de) 2006-12-22 2008-06-26 Dr. Johannes Heidenhain Gmbh Umrichter mit einer Verzögerungsschaltung für PWM-Signale
EP1986322B1 (de) 2007-04-24 2012-11-14 Eberspächer Controls GmbH & Co. KG Halbleiterschalter mit integrierter Verzögerungsschaltung
EP2315493B1 (de) 2009-10-21 2017-05-10 Mahle Behr France Rouffach S.A.S Heizeinrichtung insbesondere für eine Kraftfahrzeugklimaanlage

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4639579A (en) * 1984-05-15 1987-01-27 Thorn Emi Domestic Appliances Limited Heating apparatus
US5070229A (en) * 1988-03-28 1991-12-03 Nissan Motor Co., Ltd. Window heater controlling apparatus providing a gradual heating voltage
US5004892A (en) * 1988-11-30 1991-04-02 E.G.O. Elektro-Gerate Blanc U. Fischer Radiant element
US5153410A (en) * 1991-05-28 1992-10-06 Paccar Inc. Method and apparatus for heating the cylinder of a vehicle door lock utilizing timing means
US6078024A (en) * 1997-05-27 2000-06-20 Denso Corporation Air conditioning apparatus having electric heating member integrated with heating heat exchanger
US20070053131A1 (en) * 2005-01-18 2007-03-08 Beru Ag Method for operating an electrical device
US20070119847A1 (en) * 2005-11-25 2007-05-31 Hyundai Motor Company Multistage control system of positive temperature coefficient heater and method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110030729A (zh) * 2018-01-11 2019-07-19 埃贝赫卡腾有限两合公司 电加热设备
DE102020117481A1 (de) 2020-07-02 2022-01-05 Audi Aktiengesellschaft Heizeinrichtung für ein Kraftfahrzeug

Also Published As

Publication number Publication date
CN102118892A (zh) 2011-07-06
EP2315493A1 (de) 2011-04-27
EP2315493B1 (de) 2017-05-10

Similar Documents

Publication Publication Date Title
US20110091190A1 (en) Heater particularly for a motor vehicle hvac system
CN107303794B (zh) 一种ptc液体加热器及其加热控制方法
CN111356251B (zh) 电热器的操作方法
EP2559574A2 (de) Elektrische Heizvorrichtung für ein elektrisches Fahrzeug und Steuerverfahren dafür
JP6385430B2 (ja) 電気加熱回路、特に、自動車用の電気加熱回路の制御
JP2010520963A (ja) グロープラグの通電制御方法
WO2013169423A1 (en) Method and apparatus for controlling thermal cycling
KR101988342B1 (ko) 전기자동차용 전열히터 장치 및 그 제어방법
US20150108117A1 (en) Heater
US20210153306A1 (en) Heating module
CN110758061B (zh) Ptc加热器
CN111971870B (zh) 车载用的辅助电源控制装置及车载用的辅助电源装置
KR20170029068A (ko) 차량용 공조장치
KR20130091400A (ko) 차량용 공조장치
JP6961535B2 (ja) 車載空調機制御装置及び車両
CN202117962U (zh) 一种电压控制的车用空调pwm调速模块
EP3870466B1 (de) Elektrische stromrichtervorrichtung
CN116094360A (zh) 逆变器电路，机动车车载电网以及用于运行逆变器电路的方法
JP2005354000A (ja) 電力用半導体装置
KR101706362B1 (ko) 차량용 난방 장치
US20210185764A1 (en) Electric heating device and method for operating the electric heating device
KR101423149B1 (ko) 차량용 공조장치의 ｐｔｃ 히터
JP2019022375A (ja) 電動車両の熱供給装置
WO2019239714A1 (ja) 車載空調機制御装置及び車両
CN111834308A (zh) 用于电动致动器的最佳冷却控制设备

Legal Events

Date Code Title Description
AS Assignment

Owner name: BEHR FRANCE ROUFFACH SAS, FRANCE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BLUM, THOMAS;BRUN, MICHEL;SIGNING DATES FROM 20101108 TO 20101125;REEL/FRAME:025998/0750

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION