EP3096587B1 - Dispositif de chauffage électrique - Google Patents

Dispositif de chauffage électrique Download PDF

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Publication number
EP3096587B1
EP3096587B1 EP15168434.7A EP15168434A EP3096587B1 EP 3096587 B1 EP3096587 B1 EP 3096587B1 EP 15168434 A EP15168434 A EP 15168434A EP 3096587 B1 EP3096587 B1 EP 3096587B1
Authority
EP
European Patent Office
Prior art keywords
circuit board
plug
electric heating
board section
heating device
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.)
Active
Application number
EP15168434.7A
Other languages
German (de)
English (en)
Other versions
EP3096587A1 (fr
Inventor
Jean-Philippe Gries
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 International GmbH
Original Assignee
Mahle International GmbH
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 Mahle International GmbH filed Critical Mahle International GmbH
Priority to EP15168434.7A priority Critical patent/EP3096587B1/fr
Priority to PCT/EP2016/059793 priority patent/WO2016184675A1/fr
Publication of EP3096587A1 publication Critical patent/EP3096587A1/fr
Application granted granted Critical
Publication of EP3096587B1 publication Critical patent/EP3096587B1/fr
Active 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
    • H05B3/00—Ohmic-resistance heating
    • H05B3/02—Details
    • H05B3/06—Heater elements structurally combined with coupling elements or holders
    • 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
    • F24H3/0441—Interfaces between the electrodes of a resistive heating element and the power supply means
    • 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
    • H05B2203/022—Heaters specially adapted for heating gaseous material
    • H05B2203/023—Heaters of the type used for electrically heating the air blown in a vehicle compartment by the vehicle heating system

Definitions

  • the invention relates to an electric heater according to the preamble of claim 1. Furthermore, the invention relates to a heating or air conditioning system with such a heater.
  • the waste heat of the motor vehicle engine is usually used for the heating of the vehicle interior of a motor vehicle. This waste heat arises after the vehicle engine is turned on. In a sufficient amount for the desired heat output, however, the waste heat can usually be provided only after a certain warm-up time. In addition, in modern, low-consumption motor vehicle engines, a comparatively small amount of waste heat is created. In motor vehicles with an electric motor as a drive motor, this heat source completely falls away or is considerably reduced, because the electric motor hardly generates waste heat in comparison to an internal combustion engine. It is therefore customary, especially in cold weather conditions, to use electric heaters or additional electric heaters.
  • EP 0 901 311 A2 discloses in this regard an electric heating device for motor vehicles with a plurality of block-like composite heating elements.
  • the individual heating elements are held together by a frame.
  • a control unit for electronic control of the heating power is integrated, so that the heating elements and the control unit form a common structural unit.
  • heat sinks are provided for the cooling of the control unit, which protrude into the air stream to be heated.
  • additional components are used to cool the control unit, which increases the cost and complicates the assembly.
  • a heater of the type described in the preamble of claim 1 is known from EP 2 863 143 A1 known.
  • An embodiment of the invention relates to an electrical heating device, in particular for a motor vehicle, comprising at least one heating element and at least one control device having a housing, with at least one printed circuit board, with a first printed circuit board section and a second printed circuit board section, and with at least one first plug-in device and with at least one second plug-in device, wherein the two plug-in devices serve for connecting the at least one heating element to the control device.
  • the housing partially accommodates the at least one printed circuit board, wherein the first printed circuit board section is arranged in the housing and the second printed circuit board section projects out of the housing and the at least one first plug-in device is connected to the second printed circuit board section and the at least one second plug-in device is connected to the heating element ,
  • a printed circuit board section and / or plug-in devices arranged on a printed circuit board section and / or adjacent to a printed circuit board section protrude from the housing, permits energy-saving cooling of electrical components.
  • expensive cabling which otherwise require further material and additional space omitted.
  • the at least one first plug-in device and the at least one second plug-in device are designed to be complementary to one another and / or detachably connectable to one another.
  • An additional embodiment of the electric heating device provides that the at least one first plug-in device is soldered or crimped to the second printed circuit board section. This allows a simple and uncomplicated connection of important components of the electric heater, resulting in advantages for the installation and maintenance of the electric heater.
  • the first printed circuit board section has a part which is essentially watertight.
  • the first printed circuit board section has a part which is essentially watertight.
  • the at least one heating element has a number of positive-temperature-coefficient elements. These components of the electric heating device, also referred to as PTC elements, ensure that a comfortable temperature for vehicle occupants is quickly established in the vehicle interior and, in particular, the windscreen is free from moisture fogging.
  • the at least one heating element is formed substantially block-like and has a number of continuous, mutually parallel openings as air channels.
  • the openings advantageously allow the promotion of an air flow through the heating element. The air flow heats up and, as soon as it is directed into the vehicle interior, rapidly generates the room temperature desired there by the vehicle occupants.
  • a particularly advantageous embodiment of the electric heating device provides that the at least one heating element has at least one heat-dissipating surface, with a number of heat-conducting fins, which increase the at least one heat-dissipating surface. Due to the surface-enlarging effect of the heat-conducting ribs, the heat transfer from the at least one heating element to the air flow conveyed through the openings arranged on the heating element is still considerably improved.
  • the at least one control device in the region of the printed circuit board has at least one connection for a power supply and / or at least one Connection for a control logic on. This allows the heater to connect in a structurally simple manner to the on-board power supply system of a motor vehicle and / or integrate it into the on-board electronics of a motor vehicle.
  • the at least one control device has at least one power transistor, in particular a metal-oxide-semiconductor field-effect transistor (MOSFET).
  • MOSFET metal-oxide-semiconductor field-effect transistor
  • An advantageous embodiment of the heating and / or air conditioning, in particular for a motor vehicle, with an air duct provides that in the air duct designed according to the above description electric heating device is arranged.
  • the second printed circuit board section and / or the at least one first plug-in device and the at least one second plug-in device are or are arranged in the air duct.
  • the second printed circuit board section and / or the at least one first plug-in device and the at least one second plug-in device are or are arranged in an air flow to be heated in the air duct.
  • a heating or air conditioning system is created, which also produces a very good heating performance in motor vehicles with modern, consumption-optimized and only slightly waste heat producing engines and in motor vehicles with electric motors.
  • sensitive to be cooled components of the electric heater are cooled in energy, material and space-saving manner.
  • FIG. 1 shows a schematic view of an embodiment of an electric heater 1.
  • the viewing direction of the view is carried out vertically to a arranged in the electric heater 1 circuit board 4th
  • the electric heater 1 is arranged in a heating system, not shown, of a motor vehicle.
  • the electric heating device 1 is arranged in an air conditioning system of a motor vehicle.
  • the electric heater 1 has a housing 2 and at least one printed circuit board 4.
  • the at least one printed circuit board 4 may have a rigid structure or else a flexible structure.
  • the at least one printed circuit board 4 may be a single-layer printed circuit board 4, a two-layer printed circuit board 4 or a multilayer printed circuit board 4.
  • the printed circuit board 4 has a first printed circuit board section 5 and a second printed circuit board section 6 arranged adjacent to the first printed circuit board section 5.
  • connection 13 for the electrical power supply of the electric heating device 1 is arranged in the region of the first printed circuit board section 5.
  • the electric heater 1 can be connected to an unillustrated on-board power supply system of a motor vehicle.
  • connection 14 for an electronic connection of the electric heating device 1 is arranged with a control logic, not shown.
  • the electric heating device 1 can be activated, for example, via an on-board computer arranged in the motor vehicle.
  • the connection can be made for example via a data bus, such as via a CAN bus or a LIN bus.
  • the terminal 13 and / or the terminal 14 are outside the first printed circuit board section 5 arranged.
  • the electric heater 1 may have more than one terminal 13 and / or more than one terminal 14.
  • the control of the heating power of the electric heater can be done via data bus or via another signal, such as an ON / OFF signal, in particular from 0 to 12V or via a PWM signal.
  • the electrical heating device 1 has a control device 3 which has three electronic power transistors 19 in the region of the first printed circuit board section 5.
  • the electrical heating device 1 or the control device 3 has one, two, four, five, six or a plurality of such power transistors 19 in order to be able to control the current flow of the PTC elements 10 of the heating device 1.
  • the at least one power transistor 19 may be formed, for example, as a metal-oxide-semiconductor field-effect transistor.
  • the first circuit board section 5 has a substantially watertight closed part 17.
  • the substantially watertight closed part 17 for example, a plastic sheath, not shown, which is advantageously arranged in the housing (2) or by the housing (2) itself may be formed.
  • the electric heater 1 has five first connectors 7 and five second connectors 8.
  • the electric heater has one, two, three, four, six, seven, eight, nine, ten, or a plurality of first connectors 7 and second connectors 8.
  • the plug devices 7 are advantageous on the Soldered PCB.
  • male plugs 8 may be inserted, which are connected to the heating element or integrally formed therewith.
  • the plug-in devices 8 may be designed as female plug-in devices and the plug-in devices 7 correspondingly as male plug devices.
  • the at least one first plug-in device 7 and the at least one second plug-in device 8 are formed, for example, complementary to one another and in particular can be detachably or non-detachably connected to one another.
  • the heating element 9 can be connected to the control device 3.
  • the at least one first plug-in device 7 is in the in the Figures 1 and 2 illustrated embodiment connected to the at least one circuit board 4.
  • the at least one first plug-in device 7 is arranged in the region of the second printed circuit board section 6 and connected thereto.
  • the at least one second plug-in device 8 is in the in the Figures 1 and 2 illustrated embodiment with at least one heating element 9 connected.
  • the at least one heating element 9 has in the in FIG. 1 illustrated embodiment on a rectangular and substantially block-like structure.
  • the block-type structure has a series of substantially strip-shaped PTC elements 10, which are arranged, for example, between contact plates 20 and heat-conducting ribs 12.
  • the heat conducting ribs 12 enlarge a surface of the heating element 9, not shown, and thereby improve the heat transfer to the air flowing through.
  • the arranged between the PTC elements 10 and the heat conducting ribs 12 contact plates 20 are electrically conductively and thermally conductively connected to the PTC elements 10 and optionally with the heat conducting ribs 12.
  • the at least one block-shaped heating element 9 can also be arranged in a particular rectangular frame beyond.
  • the at least one heating element 9 has, for example, openings 11 arranged parallel to one another as integrated air ducts.
  • the openings 11 are arranged in this embodiment substantially in an air flow direction 16 in an air duct 15.
  • the air duct 15 is arranged for example within the heating or air conditioning, not shown.
  • FIG. 2 shows a schematic side view of an electric heater 1 according to FIG. 1 ,
  • an air flow in particular in the air flow direction 16 is conveyed by way of example.
  • the air flow flows through the openings 11 arranged in parallel, while it is heated in particular by the heat-conducting ribs 12 and the PTC elements 10.
  • the heat-conducting fins 12 and the PTC elements 10 are cooled by the air flow 21.
  • the in the Figures 1 and 2 illustrated air duct 15 has an air duct wall 18. Through the one air duct wall 18, the second printed circuit board section 6 projects into the area of the air duct 15. In the process, the second printed circuit board section 6 heats the air flow 21 or the air flow 21 cools the second printed circuit board section 6.
  • the at least one first plug-in device 7 is arranged in the region of the second printed circuit board section 6.
  • the at least one first plug-in device 7 is connected to the at least one second plug-in device 8.
  • the at least one first Plug-in device 7 and the at least one second plug-in device 8 arranged in the region of the air flow 21.
  • the at least one first plug-in device 7 and the at least one second plug-in device 8 heat the air flow. At the same time, the at least one first plug-in device 7 and the at least one second plug-in device 8 are cooled by the air flow. As a result, the second printed circuit board section 6 is also cooled and / or serves to conduct heat from the power transistors 19 of the control device 3 to the first plug-in device 7, thereby also cooling the control device 3 or cooling its power transistors 19.
  • the first circuit board portion 5 is arranged in particular in the housing 2.
  • the second circuit board section 6 projects out of the housing 2.
  • a part of the printed circuit board 4 projects out of the housing, which is larger or smaller than the second printed circuit board section 6.
  • a the air duct 15 facing part of the housing 2 in the region of the air duct wall 18 is arranged.
  • a part of the housing 2 projects into the region of the air channel 15.

Landscapes

  • 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)

Claims (12)

  1. Dispositif de chauffage électrique (1), en particulier pour un véhicule automobile, comprenant au moins un élément chauffant (9) et au moins un dispositif de commande (3) comportant un boîtier (2), ledit dispositif comprenant au moins une plaquette de circuits imprimés (4) comportant une première partie de plaquette de circuits imprimés (5) et une deuxième partie de plaquette de circuits imprimés (6), et comprenant au moins un premier dispositif connecteur (7) et au moins un deuxième dispositif connecteur (8), où les deux dispositifs connecteurs (7, 8) servent au raccordement de l'élément chauffant (9) au moins au nombre de un, au dispositif de commande (3), où le premier dispositif connecteur (7) au moins au nombre de un est raccordé à la deuxième partie (6) de la plaquette de circuits imprimés, et le deuxième dispositif connecteur (8) au moins au nombre de un est raccordé à l'élément chauffant (9), caractérisé en ce que le boîtier (2) ne loge qu'en partie la plaquette de circuits imprimés (4) au moins au nombre de un, où la première partie (5) de la plaquette de circuits imprimés est disposée dans le boîtier (2) et la deuxième partie (6) de la plaquette de circuits imprimés dépasse du boîtier (2).
  2. Dispositif de chauffage électrique (1) selon la revendication 1, caractérisé en ce que le premier dispositif connecteur (7) au moins au nombre de un et le deuxième dispositif connecteur (8) au moins au nombre de un sont conçus en étant complémentaires l'un de l'autre et / ou peuvent être raccordés l'un à l'autre de manière détachable.
  3. Dispositif de chauffage électrique (1) selon la revendication 1 ou 2, caractérisé en ce que le premier dispositif connecteur (7) au moins au nombre de un est brasé ou serti avec la deuxième partie (6) de la plaquette de circuits imprimés.
  4. Dispositif de chauffage électrique (1) selon la revendication 1 ou 2, caractérisé en ce que la première partie (5) de la plaquette de circuits imprimés présente une partie (17) et cette partie (17) est conçue en étant scellée de manière pratiquement étanche à l'eau.
  5. Dispositif de chauffage électrique (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que l'élément chauffant (9) au moins au nombre de un présente un nombre d'éléments (10) à coefficient de température positif.
  6. Dispositif de chauffage électrique (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que l'élément chauffant (9) au moins au nombre de un est conçu en ayant pratiquement la forme d'un bloc et présente un nombre d'ouvertures (11) servant de conduits d'air, lesdites ouvertures étant continues et disposées parallèlement les unes aux autres.
  7. Dispositif de chauffage électrique (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que l'élément chauffant (9) au moins au nombre de un présente au moins une surface dissipant de la chaleur, ledit élément chauffant ayant un nombre d'ailettes (12) conductrices de la chaleur, lesquelles ailettes agrandissent la surface - au moins au nombre de un - dissipant de la chaleur.
  8. Dispositif de chauffage électrique (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif de commande (3) présente, dans la zone de la plaquette de circuits imprimés (4), au moins une connexion pour une alimentation en courant (13) et / ou au moins une connexion pour une logique de commande (14).
  9. Dispositif de chauffage électrique (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif de commande (3) au moins au nombre de un présente au moins un transistor de puissance, comme en particulier un transistor à effet de champ comprenant une structure se composant d'un oxyde, d'un métal et d'un semi-conducteur.
  10. Système de chauffage et / ou de climatisation, en particulier pour un véhicule automobile, ledit système comprenant un conduit d'air (15), caractérisé en ce qu'un dispositif de chauffage électrique (1) selon l'une quelconque des revendications précédentes est disposé dans le conduit d'air (15).
  11. Système de chauffage et / ou de climatisation selon la revendication 10, caractérisé en ce que la deuxième partie (6) de la plaquette de circuits imprimés et / ou le premier dispositif connecteur (7) au moins au nombre de un et le deuxième dispositif connecteur (8) au moins au nombre de un est ou sont disposé(s) dans le conduit d'air (15).
  12. Système de chauffage et / ou de climatisation selon la revendication 11, caractérisé en ce que la deuxième partie (6) de la plaquette de circuits imprimés et / ou le premier dispositif connecteur (7) au moins au nombre de un et le deuxième dispositif connecteur (8) au moins au nombre de un est ou sont disposé(s) dans un flux d'air devant être chauffé dans le conduit d'air (15).
EP15168434.7A 2015-05-20 2015-05-20 Dispositif de chauffage électrique Active EP3096587B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP15168434.7A EP3096587B1 (fr) 2015-05-20 2015-05-20 Dispositif de chauffage électrique
PCT/EP2016/059793 WO2016184675A1 (fr) 2015-05-20 2016-05-02 Dispositif de chauffage électrique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15168434.7A EP3096587B1 (fr) 2015-05-20 2015-05-20 Dispositif de chauffage électrique

Publications (2)

Publication Number Publication Date
EP3096587A1 EP3096587A1 (fr) 2016-11-23
EP3096587B1 true EP3096587B1 (fr) 2019-07-17

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP15168434.7A Active EP3096587B1 (fr) 2015-05-20 2015-05-20 Dispositif de chauffage électrique

Country Status (2)

Country Link
EP (1) EP3096587B1 (fr)
WO (1) WO2016184675A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3065856B1 (fr) * 2017-04-28 2021-02-19 Valeo Systemes Thermiques Dispositif de chauffage electrique pour vehicule automobile
DE102017010211A1 (de) * 2017-11-02 2019-05-02 Eberspächer Catem Gmbh & Co. Kg Elektrische Heizvorrichtung
FR3075327B1 (fr) * 2017-12-19 2020-05-15 Valeo Systemes Thermiques Module d'alimentation pour radiateur de chauffage et radiateur de chauffage equipe d'un tel module
DE102019214566B4 (de) * 2019-09-24 2021-04-01 Vitesco Technologies GmbH Heizanordnung
CN212046774U (zh) * 2019-12-30 2020-12-01 法雷奥汽车空调湖北有限公司 电加热装置、供暖、通风和/或空调装置和机动车辆
FR3126480A1 (fr) * 2021-08-27 2023-03-03 Valeo Systemes Thermiques Radiateur electrique d’une installation de ventilation, de chauffage, et/ou de climatisation d’un vehicule automobile.
CN215930157U (zh) * 2021-09-24 2022-03-01 上海科勒电子科技有限公司 一种暖风加热器的驱动部件及暖风加热器

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Publication number Priority date Publication date Assignee Title
DE19738318C5 (de) 1997-09-02 2014-10-30 Behr Gmbh & Co. Kg Elektrische Heizeinrichtung für ein Kraftfahrzeug
FR2915654B1 (fr) * 2007-04-27 2014-12-12 Valeo Systemes Thermiques Dispositif additionnel de chauffage electrique d'un flux d'air constitutif de ventilation, chauffage et/ou climatisation d'un vehicule automobile
FR2942867B1 (fr) * 2009-03-03 2011-03-25 Valeo Systemes Thermiques Dispositif de chauffage, notamment pour vehicule automobile
FR2973639B1 (fr) * 2011-03-28 2013-04-26 Valeo Systemes Thermiques Echangeur de chaleur a elements chauffants electriques
EP2863143B1 (fr) * 2013-10-21 2019-02-20 Mahle Behr France Rouffach S.A.S Dispositif de chauffage

Non-Patent Citations (1)

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Title
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Also Published As

Publication number Publication date
WO2016184675A1 (fr) 2016-11-24
EP3096587A1 (fr) 2016-11-23

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