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Wall insulation for a stator groove of an electric motor

An insulation device and motor technology, applied in the field of motors, can solve the problems that cannot be guaranteed, cannot be directly controlled, and characteristics deteriorate, and achieve good heat dissipation effect

Active Publication Date: 2019-05-21
AUDI AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, on the other hand, the filler material makes the rheological (liquid flow) properties of the plastic worse during the pouring process
[0008] Furthermore, the impregnation process is in principle disadvantageous from a process and quality point of view
Furthermore, the wetting of the electrical conductors and the tank wall insulation with the impregnating material introduced - which may be epoxy / polyester resin or similar - cannot be directly controlled due to poor accessibility and therefore cannot be guaranteed

Method used

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  • Wall insulation for a stator groove of an electric motor
  • Wall insulation for a stator groove of an electric motor
  • Wall insulation for a stator groove of an electric motor

Examples

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Embodiment Construction

[0044] exist figure 1 A schematic illustration of a laminated stator stack 11 of an electric motor 10 with a toothed configuration according to the invention of the slot wall insulation 14 is shown in . Here, the construction of the slot wall insulation 14 according to the invention is shown in three sections a, b and c. In a first section a, a stator lamination stack 11 is shown, in which a stator slot 12 is shown, which corresponds to the customary arrangement of stator slots 12 with slot walls 13 .

[0045] In the second section b, the stator lamination pack 11 is shown with a stator slot 12 and a slot wall 13 with a tooth-shaped slot wall insulation 14 according to the invention. In this case, the tooth-shaped configuration of the slot wall insulation 14 is preferably formed during the production of the stator laminated core 11 of the electric motor 10 in a casting method. The tooth-like configuration of the slot wall insulation 14 is preferably designed on both sides al...

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Abstract

An electric motor (10) includes a stator body with a stator laminated core (11) and a stator slot (12), wherein the stator slot (12) has a slot wall (13) with a slot wall insulation (14) for electrical insulation, as well as at least one electrical conductor (17) which is received by the stator slot (12), the slot wall insulation (14) has a tooth-shaped configuration.

Description

technical field [0001] The invention relates to an electric motor with slot wall insulation and to a method for producing an electric motor with slot wall insulation. Background technique [0002] In smaller motors, the stator lamination stack is usually encapsulated with plastic casting for electrical insulation, whereby the insulating material is formed not only as slot wall insulation and connected into the stator slot but also completely formed and connected to the stator stack. on the end side of the sheet pack and can be manufactured in one manufacturing step. After applying the insulating material, the electrical conductors are inserted into the stator slots and then impregnated in order to prevent movement of the electrical conductors and to ensure the best possible thermal conductivity of the electrical conductors to the stator lamination stack. In this case, the impregnation takes place with a resin or similar material. [0003] However, the thermal conductivity ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K3/34H02K1/04
CPCH02K3/12H02K3/24H02K3/345H02K15/12H02K1/148H02K3/487H02K5/08H02K15/028
Inventor K·韦伯
Owner AUDI AG