EP1113706B9 - Continuously adjustable method of temperature in an electrical heating device suitable for a vehicle - Google Patents
Continuously adjustable method of temperature in an electrical heating device suitable for a vehicle Download PDFInfo
- Publication number
- EP1113706B9 EP1113706B9 EP20000126901 EP00126901A EP1113706B9 EP 1113706 B9 EP1113706 B9 EP 1113706B9 EP 20000126901 EP20000126901 EP 20000126901 EP 00126901 A EP00126901 A EP 00126901A EP 1113706 B9 EP1113706 B9 EP 1113706B9
- Authority
- EP
- European Patent Office
- Prior art keywords
- temperature
- transistor
- electric heater
- control loop
- housing
- 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.)
- Expired - Lifetime
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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
- H05B1/0288—Applications for non specified applications
Definitions
- the invention relates to a device for infinitely variable adjustment of the temperature of an electric heater for a vehicle, wherein the electric heater is in particular one or more transistor-controlled PTC elements.
- the invention has for its object to provide a device for adjusting the temperature of an electric heater in a vehicle with which the temperature can be infinitely or virtually infinitely adjusted without significant circuit complexity.
- the control of each transistor takes place in such a way that the transistors are kept at predeterminable temperatures.
- the operating point of the transistors is determined according to their temperatures.
- the chip temperature control loop according to the invention is integrated as a subordinate control loop in a main control loop for controlling the average radiator temperature.
- the main control loop is designed such that it specifies setpoint values for the temperature of the transistor, its housing or its substrate to the subordinate temperature control circuits, which are equal to each other, the same or different in groups, to the average temperature of the electric heater and / or to regulate a temperature gradient to be applied to the electric heater.
- the electric heater can be adjusted to an arbitrarily adjustable temperature gradient.
- the temperature gradient of the air flow through the electric heater required by the driver / passenger requirements can thus be established by the electric heater so that the second mixing flap with servomotor (air-side temperature control) or the second heating medium flow control valve with actuator ( water-side temperature control) in addition to the wiring can be omitted.
- Another advantage of the invention lies in the fact that the control of the chip temperatures enables parallel operation of several transistors, in which the power loss is automatically distributed uniformly to the transistors.
- the elements of the inner control loop or the inner control circuits may be located in the transistor housing and / or outside of the transistor housing.
Landscapes
- Air-Conditioning For Vehicles (AREA)
- Control Of Temperature (AREA)
- Control Of Resistance Heating (AREA)
Description
Die Erfindung betrifft eine Vorrichtung zur stufenlosen Verstellbarkeit der Temperatur eines Elektroheizers für ein Fahrzeug, wobei es sich bei dem Elektroheizer insbesondere um ein oder mehrere transistorgesteuerte PTC-Elemente handelt.The invention relates to a device for infinitely variable adjustment of the temperature of an electric heater for a vehicle, wherein the electric heater is in particular one or more transistor-controlled PTC elements.
Bekannt sind Vorrichtungen zur Verstellbarkeit einer Temperatur eines Elektroheizers im KFZ, entsprechend der DE 19733045 C1, die durch Erfassen und Regeln der Transistorströme eine Arbeitspunktstabilisierung erreichen. Diese Vorrichtungen haben den Nachteil, dass der Strom noch keine Aussage über die tatsächliche Transistortemperatur liefert und ferner die zur Messung notwendigen Shunts toleranzbehaftet und kostenintensiv sind.Known are devices for adjusting a temperature of an electric heater in the vehicle, according to DE 19733045 C1, which achieve an operating point stabilization by detecting and regulating the transistor currents. These devices have the disadvantage that the current does not provide any information about the actual transistor temperature and furthermore the shunts necessary for the measurement are subject to tolerances and are expensive.
Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung zum Verstellen der Temperatur eines Elektroheizers in einem Fahrzeug zu schaffen, mit dem sich die Temperatur ohne nennenswerten schaltungstechnischen Aufwand stufenlos bzw. quasi stufenlos verstellen läßt.The invention has for its object to provide a device for adjusting the temperature of an electric heater in a vehicle with which the temperature can be infinitely or virtually infinitely adjusted without significant circuit complexity.
Zur Lösung dieser Aufgabe wird mit der Erfindung eine Vorrichtung zur kontinuierlichen Verstellbarkeit der Temperatur eines Elektroheizers in einem Fahrzeug vorgeschlagen, bei der ein oder mehrere Heizelemente über ein oder mehrere Transistoren insbesondere stufenlos mit elektrischer Energie versorgt werden, wobei jedem Transistor ein Temperatursensor zur Ermittlung der Temperatur des Transistors, seines Gehäuses oder seines Substrats zugeordnet ist. Bei dieser Vorrichtung ist erfindungsgemäß vorgesehen,
- dass jeder Transistor mit dem ihm zugeordneten Temperatursensor und einem Regler zu einem Temperaturregelkreis verschaltet ist und
- dass die vom Temperatursensor ermittelte Temperatur auf einen vorgebbaren Wert regelbar ist.
- that each transistor is connected to its associated temperature sensor and a controller to a temperature control loop, and
- that the temperature determined by the temperature sensor can be regulated to a predefinable value.
Nach der Erfindung erfolgt also die Ansteuerung jedes Transistors dergestalt, dass die Transistoren auf vorgebbaren Temperaturen gehalten werden. Der Arbeitspunkt der Transistoren bestimmt sich also nach ihren Temperaturen.According to the invention, therefore, the control of each transistor takes place in such a way that the transistors are kept at predeterminable temperatures. The operating point of the transistors is determined according to their temperatures.
Vorteilhafterweise ist der erfindungsgemäße Chiptemperaturregelkreis als unterlagerter Regelkreis in einem Hauptregelkreis zur Regelung der mittleren Heizkörpertemperatur eingebunden.Advantageously, the chip temperature control loop according to the invention is integrated as a subordinate control loop in a main control loop for controlling the average radiator temperature.
Vorteilhaft ist es, wenn der Hauptregelkreis derart ausgelegt ist, dass er an die unterlagerten Temperaturregelkreise Sollwerte für die Temperatur des Transistors, seines Gehäuses oder seines Substrats vorgibt, die miteinander gleich, gruppenweise gleich oder unterschiedlich sind, um die mittlere Temperatur des Elektroheizers und/oder einen dem Elektroheizer aufzuprägenden Temperaturgradienten zu regeln. Hierdurch lässt sich der Elektroheizer auf einen beliebig einstellbaren Temperaturgradienten ausregeln. Bei Einsatz eines derart geregelten Elektroheizers in die Klimaanlage eines Fahrzeuges mit z.B. fahrer- und beifahrerseitig getrennt vorgebbaren Temperaturen kann somit das aufgrund der Fahrer-/Beifahrerwünsche erforderliche Temperaturgefälle des Luftstromes durch den Elektroheizer aufgebaut werden, so dass die bei diesen Klimaanlagen erforderliche zweite Mischklappe mit Stellmotor (luftseitige Temperaturregelung) oder das zweite Heizmedienfluss-Steuerventil mit Stellglied (wasserseitige Temperaturregelung) nebst der Verkabelung entfallen kann.It is advantageous if the main control loop is designed such that it specifies setpoint values for the temperature of the transistor, its housing or its substrate to the subordinate temperature control circuits, which are equal to each other, the same or different in groups, to the average temperature of the electric heater and / or to regulate a temperature gradient to be applied to the electric heater. As a result, the electric heater can be adjusted to an arbitrarily adjustable temperature gradient. When using such a controlled electric heater in the air conditioning of a vehicle with e.g. The temperature gradient of the air flow through the electric heater required by the driver / passenger requirements can thus be established by the electric heater so that the second mixing flap with servomotor (air-side temperature control) or the second heating medium flow control valve with actuator ( water-side temperature control) in addition to the wiring can be omitted.
Ein weiterer Vorteil der Erfindung ist darin zu sehen, dass die Regelung der Chiptemperaturen einen Parallelbetrieb mehrerer Transistoren ermöglicht, bei dem sich automatisch die Verlustleistung gleichmäßig auf die Transistoren verteilt.Another advantage of the invention lies in the fact that the control of the chip temperatures enables parallel operation of several transistors, in which the power loss is automatically distributed uniformly to the transistors.
Die Elemente des inneren Regelkreises bzw. der inneren Regelkreise können im Transistorgehäuse und/oder auch außerhalb des Transistorgehäuses liegen.The elements of the inner control loop or the inner control circuits may be located in the transistor housing and / or outside of the transistor housing.
Ein Ausführungsbeispiel der Erfindung ergibt sich aus dem Schaltkreis gemäß der Zeichnung, dessen einzelne Komponenten entsprechend bezeichnet sind. Hierbei ist zu bedenken, dass nur ein unterlagerter Transistortemperatur-Regelkreis dargestellt ist. Im Falle des Aufbaus des Elektroheizers mit mehreren Heizelementen und mehreren Transistoren sind die Einzel-Regelkreise untereinander parallel geschaltet und dem übergeordneten Hauptregelkreis unterlagert.An embodiment of the invention results from the circuit according to the drawing, whose individual components are designated accordingly. It should be remembered that only a subordinate transistor temperature control loop is shown. In the case of the construction of the electric heater with a plurality of heating elements and a plurality of transistors, the individual control circuits are connected in parallel with each other and subordinate to the parent main control loop.
Claims (5)
- A device for continuously adjusting the temperature of an electric heater in a motor vehicle, comprising- at least one heating element, and- at least one transistor for supplying electric power to the at least one heating element,- a temperature sensor for detecting the temperature of the transistor, its housing and/or its substrate is associated to each transistor,characterized in- that each transistor is connected with the associated temperature sensor as an actual value transducer and with a controller to form a temperature control loop, and- that the temperature detected by the temperature sensor is controllable to a target temperature value adapted to be set by a target value transducer.
- The device of claim 1, wherein the temperature control loops are integrated into a main control loop as subordinate control loops.
- The device of claim 2, wherein the main control loop is configured such that it provides target values of the temperature of the transistor, its housing and/or its substrate to the subordinate temperature control loops, which values are similar to each other, similar in groups or different, so as to control the mean temperature of the electric heater and/or a temperature gradient to be impressed on the electric heater.
- The device of one of claims 1 to 3, wherein the control of the chip temperatures allows for a parallel operation of a plurality of transistors, wherein the desired temperature distribution is automatically distributed uniformly over the transistors.
- The device of one of claims 1 to 3, wherein the components of a temperature control loop may be located within or without the transistor housing.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19963558 | 1999-12-29 | ||
| DE19963558 | 1999-12-29 | ||
| DE10010622 | 2000-03-03 | ||
| DE10010622A DE10010622C2 (en) | 1999-12-29 | 2000-03-03 | Device for continuously adjusting the temperature of an electric heater for a vehicle |
Publications (4)
| Publication Number | Publication Date |
|---|---|
| EP1113706A2 EP1113706A2 (en) | 2001-07-04 |
| EP1113706A3 EP1113706A3 (en) | 2002-05-02 |
| EP1113706B1 EP1113706B1 (en) | 2005-10-26 |
| EP1113706B9 true EP1113706B9 (en) | 2006-03-15 |
Family
ID=26004691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20000126901 Expired - Lifetime EP1113706B9 (en) | 1999-12-29 | 2000-12-08 | Continuously adjustable method of temperature in an electrical heating device suitable for a vehicle |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1113706B9 (en) |
| DE (1) | DE50011436D1 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3330786C2 (en) * | 1983-08-26 | 1986-04-30 | Hülsbeck & Fürst GmbH & Co KG, 5620 Velbert | Heatable door cylinders, in particular on motor vehicle doors |
| DE3442350A1 (en) * | 1984-11-20 | 1986-06-05 | Rudolf 6000 Frankfurt Querfurth | Heat exchange system for heating an electrically driven road vehicle |
| DE19733045C1 (en) | 1997-07-31 | 1998-07-30 | Fahrzeugklimaregelung Gmbh | Electric heating for vehicle |
-
2000
- 2000-12-08 DE DE50011436T patent/DE50011436D1/en not_active Expired - Lifetime
- 2000-12-08 EP EP20000126901 patent/EP1113706B9/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP1113706A3 (en) | 2002-05-02 |
| EP1113706B1 (en) | 2005-10-26 |
| DE50011436D1 (en) | 2005-12-01 |
| EP1113706A2 (en) | 2001-07-04 |
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