EP4008820A1 - Schutzhülle zum elektrischen und thermischen schutz einer elektrisch leitenden stromschiene, und verfahren zur herstellung der schutzhülle - Google Patents

Schutzhülle zum elektrischen und thermischen schutz einer elektrisch leitenden stromschiene, und verfahren zur herstellung der schutzhülle Download PDF

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Publication number
EP4008820A1
EP4008820A1 EP20383044.3A EP20383044A EP4008820A1 EP 4008820 A1 EP4008820 A1 EP 4008820A1 EP 20383044 A EP20383044 A EP 20383044A EP 4008820 A1 EP4008820 A1 EP 4008820A1
Authority
EP
European Patent Office
Prior art keywords
protective sleeve
sleeve
textile
previous
busbar
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.)
Withdrawn
Application number
EP20383044.3A
Other languages
English (en)
French (fr)
Inventor
Pere Relats Casas
Oriol Relats Torante
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.)
Relats SA
Original Assignee
Relats SA
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 Relats SA filed Critical Relats SA
Priority to EP20383044.3A priority Critical patent/EP4008820A1/de
Publication of EP4008820A1 publication Critical patent/EP4008820A1/de
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B21/00—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B21/20—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes specially adapted for knitting articles of particular configuration
    • D04B21/205—Elongated tubular articles of small diameter, e.g. coverings or reinforcements for cables or hoses
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2101/00—Inorganic fibres
    • D10B2101/02—Inorganic fibres based on oxides or oxide ceramics, e.g. silicates
    • D10B2101/06—Glass
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2505/00—Industrial
    • D10B2505/12—Vehicles

Definitions

  • the present invention generally relates, in a first aspect, to a protective sleeve for electrically and thermally protecting an electrically conductive busbar, and particularly to a protective textile sleeve with a high thermal and electric resistance and a high adaptability to curved geometries.
  • a second aspect of the invention relates to a method for obtaining the protective sleeve of the first aspect.
  • busbars are metallic elements that act as a system of electrical conductors in a generating or receiving station in which electrical energy is concentrated for distribution or feeding of large capacity equipment.
  • the protective sleeves for electrically and thermally protecting an electrically conductive busbar known in the art are generally made of vinyl, such as that disclosed in KR100845950 B1 , or, for a busbar having bent sections, with a heat-shrinkable insulating tubing, as disclosed in CN105957591B .
  • the present invention relates, in a first aspect, to a protective sleeve for electrically and thermally protecting an electrically conductive busbar.
  • the protective sleeve is a textile sleeve, particularly a textile sleeve made of closed mesh circular warp knitbraided fibreglass yarns.
  • the protective sleeve is dimensioned and has a determined transversal elasticity (preferably providing an expansion ratio of at least 1:6) to allow the protective sleeve to sleeve over and tightly cover consecutive flat straight strip segments of the busbar longitudinally running along crossing directions and respective intermediate curved flat segments joining said flat straight strip segments, said determined transversal elasticity being provided by the closed mesh circular warp knitbraiding of the fibreglass yarns.
  • the textile sleeve is impregnated with an impregnant comprising silicone to improve its thermal stability, dielectric strength and achieve a better coupling when sleeved over the busbar.
  • the protective sleeve of the first aspect of the present invention has still a greater capability for adaptation to curved geometries, and a higher thermal and electrical resistance is achieved, protecting the busbar from thermal leaks generated, for example, in a battery connected thereto, and protecting that battery from short circuits.
  • said impregnant is a water-based impregnant that comprises one or more emulsifying silicones and an acrylic resin.
  • the water-based impregnant comprises between 45% and 70%, preferably between 55% and 60%, in weight of said one or more emulsifying silicones and between 15% and 40%, preferably between 22% and 27%, in weight of said acrylic resin.
  • the textile sleeve has been made in a knitting machine with a head with 18 needles and an E8 to E12 gauge.
  • This head/needle ratio gives the textile sleeve a 1:6 expansion ratio.
  • the fibre glass yarns have a title ranging from 34/2 tex to 136/6 tex.
  • the textile sleeve has a weight ranging from 20 g/m to 40g/m.
  • the textile sleeve ranges from 2 to 12 stitches/cm and from 2 to 8 wales/cm in a rest position, when not covering the busbar, and ranges from 8 to 24 stitches/cm in use, when sleeved over the busbar.
  • the textile sleeve has a warp length ranging from 1 mm to 5 mm.
  • the textile sleeve has an optical coverage factor ranging from 70% to 85%.
  • the textile sleeve has a wall thickness ranging 0.2 mm to 2 mm.
  • an embodiment combining at least the above mentioned wall thickness and weight ranges provides a protective sleeve which indeed has an even greater capability for adaptation to curved geometries and to small spaces where the busbars are installed, without the protective sleeve requiring to modify those installation spaces, as it occupies a minimum space in the compartment where the electric batteries are located.
  • the main advantages of the protective sleeve of the first aspect of the present invention compared to those of the prior art are: higher transversal elasticity, lighter, greater thermal stability and a higher production.
  • the present invention relates to a method for obtaining a protective sleeve for electrically and thermally protecting an electrically conductive busbar which, in contrast to the methods known in the art, comprises closed-mesh circular warp knitbraiding fibreglass yarns to obtain the protective sleeve in the form of a textile sleeve.
  • the method further comprises impregnating the textile sleeve with an impregnant comprising silicone.
  • the method of the second aspect of the present invention further comprises curing said impregnant that impregnates the textile sleeve, at a temperature ranging from 150°C and 600°C during a period ranging from 15 seconds to 15 minutes.
  • the method of the second aspect of the present invention is applied, for some embodiments, to manufacture the protective sleeve of the first aspect of the present invention for any of its embodiments.
  • Figure 1 shows the protection/textile sleeve S of the first aspect of the present invention tightly sleeved over and tightly covering an electrically conductive busbar B, particularly consecutive flat straight strip segments of the busbar B longitudinally running along crossing directions, indicated in the Figure by arrows X, Y, and Z, and also along intermediate curved flat segments joining the flat straight strip segments.
  • the high transversal elasticity of the sleeve S provided by the circular warp knit braiding of the fibreglass yarns makes it suitable to be sleeved over busbars B with such varying geometry, i.e. including several and different curved segments.
  • Figure 2 shows the knitting structure used to knit the fiberglass yarns to manufacture the textile sleeve S, particularly a closed mesh circular warp knitbraided structure.
  • the textile sleeve meshes are formed vertically in a closed manner, and joined to each other between adjacent passes, so that diagonal and vertical connections are provided, providing a property to the so knitted sleeve that makes it difficult to unravel.
  • the present inventors have manufactured a prototype of the protective sleeve S, impregnating the textile sleeve with a water-based impregnation that is composed of emulsifying silicones, acrylic resins and a portion of pigmentation that provides the final colour to the textile element, particularly with the following composition: • Transparent emulsifying silicones (58.3%)
  • the manufactured prototype has the following properties:
  • the dielectric strength test has not been carried out on a gauge but directly on the busbar B to be sheathed. Once the busbar B is sheathed with the protective sleeve S, a part of this sheathed busbar B is wrapped in silver foil and the ends of the busbar B are placed in the vortices of the measuring device and then the test is started, providing the above identified results.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Knitting Of Fabric (AREA)
EP20383044.3A 2020-12-01 2020-12-01 Schutzhülle zum elektrischen und thermischen schutz einer elektrisch leitenden stromschiene, und verfahren zur herstellung der schutzhülle Withdrawn EP4008820A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20383044.3A EP4008820A1 (de) 2020-12-01 2020-12-01 Schutzhülle zum elektrischen und thermischen schutz einer elektrisch leitenden stromschiene, und verfahren zur herstellung der schutzhülle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20383044.3A EP4008820A1 (de) 2020-12-01 2020-12-01 Schutzhülle zum elektrischen und thermischen schutz einer elektrisch leitenden stromschiene, und verfahren zur herstellung der schutzhülle

Publications (1)

Publication Number Publication Date
EP4008820A1 true EP4008820A1 (de) 2022-06-08

Family

ID=73834404

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20383044.3A Withdrawn EP4008820A1 (de) 2020-12-01 2020-12-01 Schutzhülle zum elektrischen und thermischen schutz einer elektrisch leitenden stromschiene, und verfahren zur herstellung der schutzhülle

Country Status (1)

Country Link
EP (1) EP4008820A1 (de)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0077665A1 (de) * 1981-10-15 1983-04-27 The Bentley-Harris Manufacturing Co. Elektrische Isoliermuffe
EP1746324A1 (de) * 2004-05-12 2007-01-24 Relats, S.A. Verfahren zur herstellung von schutzrohren
KR100845950B1 (ko) 2006-12-08 2008-07-11 남상만 내화용 절연 부스바 제조장치
WO2009010599A1 (es) * 2007-07-17 2009-01-22 Relats, S.A. Funda de protección flexible y procedimiento de fabricación
WO2011044345A2 (en) * 2009-10-07 2011-04-14 Federal-Mogul Powertrain, Inc. Flexible textile sleeve with end fray resistant, protective coating and method of construction thereof
CN105957591A (zh) 2016-06-23 2016-09-21 深圳市沃尔核材股份有限公司 一种非规则母排及其绝缘方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0077665A1 (de) * 1981-10-15 1983-04-27 The Bentley-Harris Manufacturing Co. Elektrische Isoliermuffe
EP1746324A1 (de) * 2004-05-12 2007-01-24 Relats, S.A. Verfahren zur herstellung von schutzrohren
KR100845950B1 (ko) 2006-12-08 2008-07-11 남상만 내화용 절연 부스바 제조장치
WO2009010599A1 (es) * 2007-07-17 2009-01-22 Relats, S.A. Funda de protección flexible y procedimiento de fabricación
WO2011044345A2 (en) * 2009-10-07 2011-04-14 Federal-Mogul Powertrain, Inc. Flexible textile sleeve with end fray resistant, protective coating and method of construction thereof
CN105957591A (zh) 2016-06-23 2016-09-21 深圳市沃尔核材股份有限公司 一种非规则母排及其绝缘方法

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