EP3607569B1 - Ruban électrique conducteur électriquement isolé, en particulier pour des moteurs électriques et des transformateurs - Google Patents

Ruban électrique conducteur électriquement isolé, en particulier pour des moteurs électriques et des transformateurs Download PDF

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Publication number
EP3607569B1
EP3607569B1 EP18715509.8A EP18715509A EP3607569B1 EP 3607569 B1 EP3607569 B1 EP 3607569B1 EP 18715509 A EP18715509 A EP 18715509A EP 3607569 B1 EP3607569 B1 EP 3607569B1
Authority
EP
European Patent Office
Prior art keywords
strip
enamel
electrical conductor
thickness
face
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
EP18715509.8A
Other languages
German (de)
English (en)
Other versions
EP3607569A1 (fr
Inventor
Marcus Walder
Stefan Ziegler
Volker Wandelt
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.)
Alanod GmbH and Co KG
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Alanod GmbH and Co KG
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Publication date
Application filed by Alanod GmbH and Co KG filed Critical Alanod GmbH and Co KG
Publication of EP3607569A1 publication Critical patent/EP3607569A1/fr
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Publication of EP3607569B1 publication Critical patent/EP3607569B1/fr
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/0009—Details relating to the conductive cores
    • H01B7/0018—Strip or foil conductors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0206—Manufacturing of magnetic cores by mechanical means
    • H01F41/0213—Manufacturing of magnetic circuits made from strip(s) or ribbon(s)
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/24—Magnetic cores
    • H01F27/25—Magnetic cores made from strips or ribbons
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2847—Sheets; Strips

Definitions

  • the present invention relates to an electrically insulated electrical conductor strip, in particular for electric motors and transformers, with a strip-shaped electrical conductor which has an upper cover surface and a lower cover surface, two side edge surfaces and one end edge surface each, and with electrical insulation on at least one cover surface of the band is arranged.
  • Electrical conductor strips of this type are referred to, for example, as electrical steel or electrical steel and are used to produce magnetic circuits for electrical machines, i.e. cores for dynamos, electric motors, transformers, relays, contactors, choke coils, ignition coils, electricity meters and controllable deflection magnets.
  • Cold-rolled strips and sheets made from iron-silicon alloys are particularly common. Since eddy currents occur in a coil core made of solid material under the influence of changing magnetic fields, which can cause the core to become hot, the cores are exclusively designed as laminated and insulated sheets in packages or as wound cut strip cores.
  • wire enamels such as THEIC-modified polyester imides, polyamides and epoxies, solderable wire enamels made of polyurethane and adhesive enamels such as e.g. B. made of PVB (polyvinyl butyral) and polyamide.
  • GB 900 519 A and EP 3 109 873 A1 disclose electrical conductor tapes coated with an insulating layer of latex and further wrapped in an insulating adhesive tape.
  • the present invention has for its object to provide an electrically insulated electrical conductor strip of the type described above, which with can be produced with reduced effort, in particular using a lacquer for the insulation, but has a high electrical insulating effect.
  • the insulation comprises a layer of lacquer and an adhesive film tape which is glued to the lower cover surface and/or the upper cover surface of the strip-shaped electrical conductor, at least in one area , which is immediately adjacent to a side edge surface.
  • the edge of the strip is laminated with a temperature-stable adhesive tape (e.g. made of polyimide) before (or alternatively after) painting.
  • a temperature-stable adhesive tape e.g. made of polyimide
  • lacquer In comparison with the state of the art, a large area of the expensive plastic layer can be replaced by lacquer without the electrical insulation effect at the edge of the strip being impaired.
  • This in 1 illustrated cable strip 1 comprises a strip-shaped electrical conductor 2, which has an upper cover surface 2a and a lower cover surface 2b, two side edge surfaces 2c and each end has a front edge surface, not shown. Furthermore, the cable strip 1 according to the invention comprises an electrical insulation 3 which is applied to at least one side of the strip 1--in the illustrated embodiment to both the lower cover surface 2b and the upper cover surface 2a.
  • the insulation comprises a lacquer layer 3a and an adhesive foil tape 3b, which is made of plastic and is glued to the lower cover surface 2b and/or the upper cover surface 2a of the strip-shaped electrical conductor 2, at least in each case in an area 4 that is directly adjacent to a Side edge surface 2c adjacent.
  • the film adhesive tape 3b has a projection 5 in relation to the side edge surface 2c of the strip-shaped electrical conductor 1, as a result of which leakage currents can be prevented.
  • the overhang 5 can preferably have a length L in the range 0 cm ⁇ L ⁇ 5 cm.
  • the electrical conductor 2 in the form of a strip can in particular consist of aluminum or an aluminum alloy and preferably have a thickness D in the range from 0.1 mm to 1.5 mm.
  • the paint of the paint layer 3a which can be applied by immersion, such as electro-dip painting, by brushing, rolling, spinning, spraying, in particular in a continuous belt process, and is then cured, causes at least the lower cover surface 2b and/or the upper Top surface 2a are sufficiently electrically isolated.
  • the lacquer layer 3a can be formed from a lacquer based on organic polymers, such as an acrylic, epoxy, polyester, polyamide or fluoropolymer lacquer, or based on sol-gel compositions, in particular from a wire lacquer, such as a THEIC-modified polyesterimide. It can preferably have a thickness DL in the range from 5 ⁇ m to 50 ⁇ m. As shown, this thickness DL can also be smaller in the area of the film adhesive tape 3b, in particular so that an even surface O of the insulation 3 is produced.
  • the film adhesive tape 3b can preferably have a thickness DK in the range from 3 ⁇ m to 20 ⁇ m, this thickness DK preferably being at least half as large as the thickness DL of the paint layer 3a in the area where there is no film adhesive tape 3b.
  • the region 4, which directly adjoins the side edge surface 2c of the strip-shaped electrical conductor 2, can have a width B in the range from 0.2 cm to 4.5 cm, preferably in the range from 0.5 to 1.5 cm.
  • the film adhesive tape 3b is only applied on one side with the overhang 5, and the lacquer layer 3a runs out on the film adhesive tape 3b like a meniscus and ends in front of the overhang 5.
  • the lower cover surface 2b and the respective adjacent side edge surface 2c are provided with the lacquer layer 3a, the Lacquer layer 3a at the transition to the side edge surface 2c and can have such a thickness DL on this, which in itself is not sufficient for the required electrical insulation.
  • top surface 2b and the side edge surface 2c each have no electrical insulation and in particular no lacquer layer 3a.
  • FIG 5 a variant is shown in which the film adhesive tape 3b is glued in a C-shape starting from the two cover surfaces 2a, 2b around the side edge surface 2c with a cover section 3c.
  • the lacquer layer 3a ends like a meniscus on the film adhesive tape 3b before the start of the cover section 3c.
  • lacquer layer 3a is only applied on one side to the upper cover surface 2a and to the film adhesive tape 3b up to the beginning of the cover section 3c.
  • the electrical conductor 2 has a reduced strip thickness D 1 in the area in front of its side edge surface 2c in comparison to the strip thickness D in the remaining strip area.
  • the tape thickness reduction in the area of the cover surfaces 2a, 2b is the same and is less than/equal to the thickness DK of the film adhesive tape 3b.
  • the lacquer layer 3a runs continuously up to the cover section 3c.
  • the embodiment shows only one possibility of lamination with the film adhesive tape 3b.
  • an adhesive strip 3b can also be placed around the edge surface 2c, or the lacquer layer 3a could be located under the foil adhesive tape 3b.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)
  • Insulated Conductors (AREA)
  • Adhesive Tapes (AREA)
  • Organic Insulating Materials (AREA)
  • Laminated Bodies (AREA)

Claims (8)

  1. Bande de conduction électrique (1) isolée électriquement, destinée en particulier à des moteurs électriques et des transformateurs, ladite bande comprenant un conducteur électrique (2) en forme de bande qui comporte une surface de recouvrement supérieure (2a) et une surface de recouvrement inférieure (2b), deux surfaces de bord latérales (2c) et à chaque extrémité une surface de bord frontale, et une isolation électrique (3) qui est disposée sur l'une au moins des deux surfaces de recouvrement (2a, 2b) de la bande (1), l'isolation (3) comprenant une couche de vernis (3a) et une bande de film adhésif (3b) en matière synthétique qui est collée sur la surface de recouvrement inférieure (2b) et/ou sur la surface de recouvrement supérieure (2a) du conducteur électrique (2) en forme de bande, c'est-à-dire à chaque fois dans une zone (4) de la surface de recouvrement inférieure (2b) et/ou de la surface de recouvrement supérieure (2a) qui est directement adjacente à une surface de bord latérale (2c),
    caractérisée en ce que la zone (4) de la bande de film adhésif (3b), qui est directement adjacente à une surface de bord latérale (2c) du conducteur électrique (2) en forme de bande, a une largeur (B) dans la gamme allant de 0,2 cm à 4,5 cm, la couche de vernis (3a) étant située par-dessus la bande de film adhésif (3b), et l'isolation (3) dans une zone de la surface de recouvrement inférieure (2b) et/ou de la surface de recouvrement supérieure (2a), qui est adjacente à la zone revêtue de la bande de film adhésif (3b), étant formée exclusivement par la couche de vernis (3a).
  2. Bande de conduction (1) selon la revendication 1, caractérisée en ce que la bande de film adhésif (3b) est collée en forme de C, à partir des surfaces de recouvrement (2a, 2b), autour d'une surface de bord latérale (2c).
  3. Bande de conduction (1) selon la revendication 1, caractérisée en ce que la bande de film adhésif (3b) comporte une saillie (5) par rapport à la surface de bord latérale (2c) du conducteur électrique (2) en forme de bande qui a de préférence une longueur (L) dans la gamme 0 cm < Ü ≤ 5 cm.
  4. Bande de conduction (1) selon l'une des revendications 1 à 3,
    caractérisée en ce que le conducteur électrique (2) en forme de bande est en aluminium ou un alliage d'aluminium et a de préférence une épaisseur (D) dans la gamme allant de 0,1 mm à 1,5 mm.
  5. Bande de conduction (1) selon l'une des revendications 1 à 4,
    caractérisée en ce que la couche de vernis (3a) a une épaisseur (DL) dans la gamme allant de 5 µm à 50 µm.
  6. Bande de conduction (1) selon l'une des revendications 1 à 5,
    caractérisée en ce que la bande de film adhésif (3b) a une épaisseur (DK) dans la gamme allant de 3 µm à 20 µm, cette épaisseur (DK) étant de préférence au moins égale à la moitié de l'épaisseur (DL) de la couche de vernis (3a) dans la zone où il n'y a pas de bande de film adhésif (3b).
  7. Bande de conduction (1) selon l'une des revendications 1 à 6,
    caractérisée en ce que la couche de vernis (3a) est formée d'un vernis à base de polymères organiques, tel qu'un vernis acrylique, époxy, polyester, polyamide, fluoropolymère, ou à base de compositions sol-gel, notamment d'un vernis pour fils tel qu'un polyesterimide modifié THEIC.
  8. Bande de conduction {1) selon l'une des revendications 1 à 7,
    caractérisée en ce que la zone (4) de la bande de film adhésif (3b), qui est directement adjacente à une surface de bord latéral (2c) du conducteur électrique (2) en forme de bande, a une largeur (B) dans la gamme allant de 0,5 à 1,5 cm.
EP18715509.8A 2017-04-05 2018-03-19 Ruban électrique conducteur électriquement isolé, en particulier pour des moteurs électriques et des transformateurs Active EP3607569B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017107328.0A DE102017107328A1 (de) 2017-04-05 2017-04-05 Elektroisoliertes elektrisches Leiterband, insbesondere für Elektromotoren und Transformatoren
PCT/EP2018/056831 WO2018184823A1 (fr) 2017-04-05 2018-03-19 Bande de conduction électrique isolée électriquement, en particulier pour moteurs électriques et transformateurs

Publications (2)

Publication Number Publication Date
EP3607569A1 EP3607569A1 (fr) 2020-02-12
EP3607569B1 true EP3607569B1 (fr) 2022-09-07

Family

ID=61899173

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18715509.8A Active EP3607569B1 (fr) 2017-04-05 2018-03-19 Ruban électrique conducteur électriquement isolé, en particulier pour des moteurs électriques et des transformateurs

Country Status (6)

Country Link
US (1) US10957464B2 (fr)
EP (1) EP3607569B1 (fr)
DE (1) DE102017107328A1 (fr)
ES (1) ES2931531T3 (fr)
PL (1) PL3607569T3 (fr)
WO (1) WO2018184823A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202018105660U1 (de) * 2018-10-02 2020-01-07 Alanod Gmbh & Co. Kg Elektroisoliertes elektrisches Leitungsband, insbesondere für Elektromotoren und Transformatoren

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB900519A (en) * 1957-07-08 1962-07-04 Eisler Paul Electric conductor strips
CN101894620A (zh) * 2010-07-28 2010-11-24 江苏豪威富电气股份有限公司 结构改进的自粘性云母带绕包线
EP3109873A1 (fr) * 2014-02-17 2016-12-28 Eaton Corporation Bobine d'inductance et composant électromagnétique

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1765866A1 (de) 1968-07-30 1971-10-28 Felten & Guilleaume Carlswerk Isolierter elektrischer Bandleiter,insbesondere lackisolierter Bandleiter
FR2474397A1 (fr) 1979-12-13 1981-07-31 Magna Ply Cy Structure allongee et revetue, methode et dispositif pour revetir en spirale, une ame allongee, d'un moyen de revetement en bande
US5281488A (en) * 1992-09-15 1994-01-25 Poulsen Peder Ulrik Foil strip conductor
US7243716B2 (en) * 2001-12-29 2007-07-17 Technip France Heated windable rigid duct for transporting fluids, particularly hydrocarbons
JP4475470B2 (ja) * 2007-04-05 2010-06-09 三菱電機株式会社 回転電機のコイル部の絶縁構造
JP5892337B2 (ja) * 2012-11-01 2016-03-23 株式会社オートネットワーク技術研究所 リアクトル、コンバータ、及び電力変換装置
WO2015130692A2 (fr) * 2014-02-25 2015-09-03 Essex Group, Inc. Fil d'enroulement isolé contenant des couches semi-conductrices
JP2016103398A (ja) * 2014-11-28 2016-06-02 住友電気工業株式会社 シールドケーブル
DE102014119720A1 (de) 2014-12-30 2016-06-30 Lisa Dräxlmaier GmbH Isolierter Flachleiter und Flachleiterverbund

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB900519A (en) * 1957-07-08 1962-07-04 Eisler Paul Electric conductor strips
CN101894620A (zh) * 2010-07-28 2010-11-24 江苏豪威富电气股份有限公司 结构改进的自粘性云母带绕包线
EP3109873A1 (fr) * 2014-02-17 2016-12-28 Eaton Corporation Bobine d'inductance et composant électromagnétique

Also Published As

Publication number Publication date
EP3607569A1 (fr) 2020-02-12
US10957464B2 (en) 2021-03-23
PL3607569T3 (pl) 2023-02-20
WO2018184823A1 (fr) 2018-10-11
ES2931531T3 (es) 2022-12-30
US20200118707A1 (en) 2020-04-16
DE102017107328A1 (de) 2018-10-11

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