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Silicone-based layered structure with oleophobic-hydrophobic surface, method for its preparation, and electrical machine with the layered structure

A layered structure, hydrophobic surface technology, used in electrical components, organic insulators, machines/engines, etc., to solve problems such as adverse effects on mechanical properties, peeling of pouring materials, embrittlement, etc.

Active Publication Date: 2018-05-08
VOLKSWAGEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Swelling, however, adversely affects the mechanical properties
Such as reduced strength and material hardness, reduced heat resistance, and possible spalling or in some cases embrittlement of the potting material

Method used

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  • Silicone-based layered structure with oleophobic-hydrophobic surface, method for its preparation, and electrical machine with the layered structure
  • Silicone-based layered structure with oleophobic-hydrophobic surface, method for its preparation, and electrical machine with the layered structure
  • Silicone-based layered structure with oleophobic-hydrophobic surface, method for its preparation, and electrical machine with the layered structure

Examples

Experimental program
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Effect test

Embodiment Construction

[0059] In the following, the present invention will be further described by taking the potting material used for the motor stator and the magnet bonding material used for the motor rotor as examples. It is understood, however, that the inventive silicone-based layered arrangement with an oleophobic-hydrophobic surface can also be used in combination with other machines or components (eg as sealing material for oil sumps).

[0060] with the help of Figure 1A and 1B A schematic assembly of an electric motor generally designated 10 is described, wherein Figure 1A shows the stator 20, while Figure 1B The rotor 40 is shown.

[0061] Figure 1A The stator 20 shown in FIG. 2 has a stator core 22 which generally consists of a plurality of stacked, here vertically stacked, monolithic laminated laminations, for example of steel. The stator core (stator lamination stack) 22 has vertically running grooves 24 at regular intervals on its inner circumference. A winding 26 , usually mad...

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PUM

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Abstract

The invention relates to a silicone-based layered structure (30) with an oleophobic-hydrophobic surface for coating, sealing and / or connecting electrical machines or components thereof, the layered structure comprising: i. silicone-containing The first layer (31) of the ketone, ii. The second layer (32) containing thermoplastic and connected to the first layer in a material bonding manner. According to the invention, the second layer (32) has a textile structure, and the material-bonding connection is formed by the silicone of the first layer (31) penetrating into the second layer (32). The invention also relates to an electrical machine (10) comprising a stator (20) and a rotor (40), wherein the stator (20) and / or the rotor (40) comprise windings (26) and / or permanent magnets (44) , and wherein in the area of ​​the winding (26) and / or in the bonding area of ​​the permanent magnet (44), an oleophobic-hydrophobic layered structure (30, 50).

Description

technical field [0001] The invention relates to a silicone-based layered structure with an oleophobic-hydrophobic surface for the coating, sealing and / or joining of electrical machines or parts thereof, in particular as windings and / or switching rings thereof (Schaltring) potting material (Vergussmasse) or as bonding material for magnets. The invention also relates to an electrical machine having such a layered structure, which is used in particular as potting material for windings and / or switching rings thereof. Background technique [0002] Electrical machines (electromechanical transducers), such as drive motors for motor vehicles, starters, generators or starter generators, convert electrical energy into mechanical energy (electric motors) or mechanical energy into electrical energy (generators). This electromechanical transformation involves electromagnetic induction. Such an electrical machine comprises a fixed stator (stator), which according to the usual design com...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B5/02H01B3/48F01D11/00F01D11/08H02K3/44F16J15/00
CPCB32B5/022B32B27/08B32B27/12B32B27/283B32B27/322B32B2255/02B32B2260/021B32B2260/046H02K3/44
Inventor R.N.贝伦特
Owner VOLKSWAGEN AG