EP4333558A1 - Ptc-heizung und verfahren - Google Patents

Ptc-heizung und verfahren Download PDF

Info

Publication number
EP4333558A1
EP4333558A1 EP22193230.4A EP22193230A EP4333558A1 EP 4333558 A1 EP4333558 A1 EP 4333558A1 EP 22193230 A EP22193230 A EP 22193230A EP 4333558 A1 EP4333558 A1 EP 4333558A1
Authority
EP
European Patent Office
Prior art keywords
envelope
ptc heating
heating element
ptc
profile
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.)
Pending
Application number
EP22193230.4A
Other languages
English (en)
French (fr)
Inventor
Alain Cmelik
Mathieu Hildenbrand
Gilles Magnier
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 EP22193230.4A priority Critical patent/EP4333558A1/de
Publication of EP4333558A1 publication Critical patent/EP4333558A1/de
Pending 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
    • H05B3/00—Ohmic-resistance heating
    • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional [2D] plane, e.g. plate-heater
    • H05B3/22—Heating elements having extended surface area substantially in a two-dimensional [2D] plane, e.g. plate-heater non-flexible
    • H05B3/24—Heating elements having extended surface area substantially in a two-dimensional [2D] plane, e.g. plate-heater non-flexible heating conductor being self-supporting
    • 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
    • H05B3/40—Heating elements having the shape of rods or tubes
    • 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
    • H05B2203/017—Manufacturing methods or apparatus for heaters
    • 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 PTC heating device and a method for manufacturing a PTC heating device.
  • a PTC heating device typically comprises a block-shaped PTC thermistor arranged between two contact plates for electrically connecting the PTC thermistor to an electrical power supply.
  • the PTC thermistor and the two contact plates together form a PTC heating element, which can be mounted in a housing - hereinafter referred to as an "envelope".
  • envelope a housing - hereinafter referred to as an "envelope”.
  • PTC heating devices are known from DE 10 2012 107 985 A1 and from US 2014/0061174 A1 .
  • a good thermal coupling of the PTC heating element to the envelope proves to be decisive for a high efficiency of the PTC heating device, so that the heat generated by the PTC heating element can also be efficiently dissipated to the external environment of the PTC heating device.
  • the basic idea of the invention is to provide the PTC heating element described at the beginning with an envelope which extends - preferably rectilinearly - along an extension direction and is open at its two ends opposite in the extension direction.
  • the envelope is thus designed in the manner of a tubular body.
  • the envelope profile is formed open with an opening perpendicular to the direction of extension at least for assembling the PTC heater; because this is accompanied by an increase in the volume of an envelope inner space surrounded by the envelope, which facilitates insertion of the PTC heater into the envelope inner space.
  • the PTC heating element can be inserted into the interior of the envelope via the open profile or, alternatively, through one of the two ends of the envelope that are open in the direction of extension.
  • a highly effective thermal connection between the PTC heating element and the envelope can be created in a simple manner, without having to press the PTC heating element and the envelope together for this purpose after the PTC heating element has been inserted into the interior of the envelope. This also ensures a very simple assembly of the PTC heating device.
  • the PTC heating device comprises an electrically energizable PTC heating element comprising a block-shaped PTC thermistor having two opposing contact surfaces, on each of which an electrical contact plate is arranged for electrically contacting the PTC thermistor with an electrical power supply.
  • the PTC heating element comprises a thermally conductive adapter layer made of an electrically insulating material, which is arranged on an outer surface of each of the two contact plates facing away from the PTC thermistor.
  • the PTC heating device comprises a metal envelope extending along an extension direction, which surrounds an envelope interior in which the PTC heating element is arranged.
  • the envelope is open at its two ends opposite each other in the direction of extension and has two end sections in the profile perpendicular to the direction of extension which can be joined together by material bonding. In the profile, the envelope lies flat against the two opposing adapter layers.
  • the covering in the profile has the geometry of a rectangle with at least one, preferably four, rounded corners.
  • An envelope with such a geometry can be produced in a simple manner, in particular by using a sheet metal forming, whereby particularly preferably said rectangle can be produced by corresponding bending of an original flat sheet metal plate.
  • the envelope in profile has two opposite broad sides and two opposite narrow sides.
  • a first of the two broad sides lies flat against a first of the two adapter layers and a second of the two broad sides lies flat against a second of the two adapter layers.
  • both sides of the PTC heating element are used to transfer heat to the envelope.
  • the two broad sides can be in contact with the two adapter layers without forming an intermediate space. In this way, the thermal contact between the PTC heating element and the envelope is improved.
  • the two broad sides and preferably also the two narrow sides, can each extend in a straight line in the profile. This facilitates a flat contact of the broad sides to the PTC heating element, whereby the desired thermal contact of the envelope with the PTC heating element can be generated particularly easily.
  • the two broad sides are biased against the PTC heating element.
  • the envelope is pressed with its two broad sides flat against the two contact plates of the PTC heating element, increasing their thermal contact with the PTC heating element.
  • the two end sections overlap in the profile in an overlap area and are joined to each other in a material bond in this overlap area.
  • the opening present during assembly of the PTC heating element can be permanently and tightly closed.
  • the material connection prefferably be a soldered connection or a welded connection.
  • the envelope is a sheet metal forming.
  • a sheet metal forming can be easily provided with the geometry of an open profile described above.
  • the two adapter layers can be bonded to the envelope, preferably by means of an adhesive bond.
  • the desired flat contact of the envelope to the PTC heating element is ensured and the thermal connection between the envelope and the two contact plates is additionally improved.
  • the invention also relates to a method for producing a PTC heating device, in particular a PTC heating device according to the invention presented above, so that in this case the advantages of the PTC heating device according to the invention described above are transferred to the method according to the invention.
  • This comprises four measures a) to d).
  • a PTC heating element is provided which comprises a block-shaped PTC thermistor having two opposing contact surfaces.
  • An electrical contact plate for electrically contacting the PTC thermistor with an electrical power supply is arranged on each of the two contact surfaces.
  • the PTC heating element also has a thermally conductive adapter layer made of an electrically insulating material, which is arranged in each case on an outer surface of the two contact plates facing away from the PTC thermistor.
  • an envelope of a metal, preferably aluminum, extending along an extension direction is provided, which partially surrounds an envelope interior and is open at its two ends opposite in the extension direction and has two end sections spaced apart in profile perpendicular to the extension direction.
  • the PTC heating element is inserted into the envelope interior.
  • the two end sections are joined together so that the envelope lies flat against the two opposing adapter layers of the PTC heating element. In the process, the opening is closed. In this way, a two-dimensional thermal contact of the PTC heating element with the envelope is created.
  • measure a) is carried out in time before measure b), but measure a) can alternatively be carried out in time after measure b).
  • the PTC heating element is inserted into the envelope along the direction of extension.
  • the PTC heating element in measure c) is introduced into the envelope interior via an opening formed in the profile to the direction of extension between the two end sections.
  • the PTC heating element may also be introduced into the envelope interior along the direction of extension.
  • FIG. 1 illustrates in a sectional view an example of a PTC heating device 1 according to the invention.
  • the PTC heating device 1 comprises an electrically energizable PTC heating element 2, which comprises a block-shaped PTC thermistor 3 having two opposing contact surfaces 4a, 4b. On each of the two contact surfaces 4a, 4b, an electrical contact plate 5a, 5b is arranged for electrically contacting the PTC thermistor 3 with an electrical power supply.
  • the PTC heating element 2 comprises thermally conductive adapter layers 6a, 6b made of an electrically insulating material, each of which is arranged on an outer surface 14a, 14b of the two contact plates 5a, 5b facing away from the PTC thermistor 3.
  • the PTC heating device 1 comprises an envelope 7 of a metal extending along an extension direction ER and surrounding an envelope interior 8 in which the PTC heating element 2 is arranged.
  • the envelope 7 may be formed by a sheet metal forming.
  • Figure 1 shows the PTC- PTC heater 1 in profile perpendicular to the direction of extension ER.
  • the envelope 7 is open at its two opposite ends in the direction of extension ER (not visible in the sectional view of Figure 1 ) and has, in the profile perpendicular to the direction of extension ER, two end sections 11a, 11b which can be connected to one another by a material bond.
  • the envelope 7 lies flat against the two opposing adapter layers 6a, 6b.
  • the two adapter layers 6a, 6b can be joined to the envelope 7 by a material bond, preferably by means of an adhesive bond.
  • the envelope 7 in profile has two opposite broad sides 12a, 12b and two opposite narrow sides 13a, 13b.
  • a first 12a of the two broad sides 12a, 12b lies flat against a first 6a of the two adapter layers 6a, 6b.
  • a second 12a of the two broad sides 12a, 12b lies flat against a second 6b of the two adapter layers 6a, 6b.
  • the two broad sides 12a, 12b can thereby abut the two adapter layers 6a, 6b without forming an intermediate space.
  • the two broad sides 12a, 12b and the two narrow sides 13a, 13b can each extend in a straight line in profile as shown.
  • both broad sides 12a, 12b can also be biased against the PTC heating element 2.
  • the envelope 7 in the profile shown has the geometry of a rectangle 16 with four rounded corners 17a-17d.
  • Figure 3 illustrates a variant of the envelope 7 according to Figure 1 .
  • the two end sections 11a, 11b are located in the profile in an overlap region 15 and are joined to each other in a material bond in this overlap region 15.
  • this material-locking connection 10 can be a soldered connection or a welded connection.
  • the process comprises four measures a) to d).
  • the PTC heating element 2 presented above, which comprises a block-shaped PTC thermistor 3 having two opposing contact surfaces 4a, 4b, on each of which in turn an electrical contact plate 5a, 5b is arranged for electrically contacting the PTC thermistor 3 with an electrical power supply.
  • the PTC heating element 2 also has a thermally conductive adapter layer 6a, 6b made of an electrically insulating material, each of which is arranged on an outer surface 14a, 14b of the two contact plates 5a, 5b facing away from the PTC thermistor.
  • an envelope 7 of a metal - for example of aluminum - extending along an extension direction ER is provided.
  • the envelope 7 is open at its two ends opposite in the direction of extension ER and partially surrounds an enclosure interior 8 and has, at and in the profile perpendicular to the direction of extension ER, two end portions 11a, 11b spaced apart from one another.
  • an opening 9 is formed in the profile at the narrow side 13a between the two end portions 11a, 11b.
  • the envelope 7 can be bent open to form the opening 9.
  • the first measure a) can be carried out in time before the second measure b). Alternatively, the first measure a) can also be carried out after the second measure b).
  • the PTC heating element 2 is introduced into the envelope interior 8.
  • the PTC heating element 2 will be introduced into the envelope interior 8 either along the direction of extension ER - i.e. not through the opening 9 formed in the profile between the two end sections 11a, 11b - or, alternatively, through this opening 9.
  • a fourth measure d the two end sections 11a, 11b are joined together so that the envelope 7 lies flat against the two opposing adapter layers 6a, 6b of the PTC heating element 2. In the course of this measure, the opening 9 is closed.

Landscapes

  • Resistance Heating (AREA)
EP22193230.4A 2022-08-31 2022-08-31 Ptc-heizung und verfahren Pending EP4333558A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP22193230.4A EP4333558A1 (de) 2022-08-31 2022-08-31 Ptc-heizung und verfahren

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22193230.4A EP4333558A1 (de) 2022-08-31 2022-08-31 Ptc-heizung und verfahren

Publications (1)

Publication Number Publication Date
EP4333558A1 true EP4333558A1 (de) 2024-03-06

Family

ID=83151627

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22193230.4A Pending EP4333558A1 (de) 2022-08-31 2022-08-31 Ptc-heizung und verfahren

Country Status (1)

Country Link
EP (1) EP4333558A1 (de)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2346304A1 (de) * 2010-01-15 2011-07-20 Behr GmbH & Co. KG Wärmeübertrager
EP2393336A1 (de) * 2010-06-04 2011-12-07 Behr France Rouffach S.A.R.L. Wärmeübertrager
DE102011077922A1 (de) * 2011-06-21 2012-12-27 Behr Gmbh & Co. Kg Wärmeübertrager
DE102012107985A1 (de) 2012-08-29 2014-03-06 Borgwarner Beru Systems Gmbh Heizstab und Verfahren zu seiner Herstellung
FR3104881A1 (fr) * 2019-12-13 2021-06-18 Valeo Systemes Thermiques Dispositif de chauffage électrique haute tension de véhicule automobile et procédé de fabrication d’un tel dispositif

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2346304A1 (de) * 2010-01-15 2011-07-20 Behr GmbH & Co. KG Wärmeübertrager
EP2393336A1 (de) * 2010-06-04 2011-12-07 Behr France Rouffach S.A.R.L. Wärmeübertrager
DE102011077922A1 (de) * 2011-06-21 2012-12-27 Behr Gmbh & Co. Kg Wärmeübertrager
DE102012107985A1 (de) 2012-08-29 2014-03-06 Borgwarner Beru Systems Gmbh Heizstab und Verfahren zu seiner Herstellung
US20140061174A1 (en) 2012-08-29 2014-03-06 Borgwarner Beru Systems Gmbh Heating rod and method for production thereof
FR3104881A1 (fr) * 2019-12-13 2021-06-18 Valeo Systemes Thermiques Dispositif de chauffage électrique haute tension de véhicule automobile et procédé de fabrication d’un tel dispositif

Similar Documents

Publication Publication Date Title
JP6112428B2 (ja) 熱交換器
CN100449811C (zh) 热电变换装置
JP5069924B2 (ja) 結合装置を有するコンパクトなパワー半導体モジュール
JP5990822B2 (ja) 熱電ユニット
EP2053902A1 (de) Elektrisches Heizgerät, Herstellungsverfahren einer Wärmegeneratoreinheit und Druckvorrichtung zum Einsatz davon
JPH1079586A (ja) 放熱装置の受熱部構造
JP4579282B2 (ja) 電気ヒータ装置
CN107342149A (zh) 线圈部件
CN100403569C (zh) 热电变换装置以及热电变换装置的制造方法
JP4403665B2 (ja) 半導体装置
US7649438B2 (en) Positive temperature coefficient thermistor device
CN106537691B (zh) 端子连接结构及其制造方法
US4644316A (en) Positive temperature coefficient thermistor device
CN107112703A (zh) 柔性连结端子以及蓄电模块
JP6100642B2 (ja) ヒータ
JP2009164647A (ja) 半導体装置
KR200235499Y1 (ko) 정 특성 서미스터 소자를 이용한 히터
JP6181934B2 (ja) 端子接続構造およびその製造方法
JP4455473B2 (ja) 車載用ヒータ
KR20010110621A (ko) 정특성 세라믹 발열체 유닛
JP4107205B2 (ja) 電気式ヒータ
JP3117328U (ja) 発熱体
JP4417412B2 (ja) 発熱ユニットの製造方法およびプレス治具
JP2005085696A (ja) 電気式ヒータ
JP4864990B2 (ja) 半導体装置

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20230728

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20251110