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Method and stator for optimized slot base insulation

An insulation layer and stator technology, applied in the shape/style/structure of winding insulation, winding insulation material, laying solid insulation, etc., can solve the problems of structural space and weight restrictions, and achieve high number of turns, low magnetic permeability, high The effect of magnetic permeability

Active Publication Date: 2020-08-18
DR ING H C F PORSCHE AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Here, the machine size is in most cases strictly limited by construction space and weight

Method used

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  • Method and stator for optimized slot base insulation
  • Method and stator for optimized slot base insulation

Examples

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Embodiment Construction

[0029] exist figure 1In , parts 110 , 120 , 130 of a motor stator with insulating paper 104 from prior art 100 are schematically shown. The corresponding slots 102 in the upper stator half 110 or in the lower stator half 120 or stator segments 130 are designed according to the prior art such that the corresponding winding wires 122 are provided, for example, with insulating paper 104 and with the insulating paper roll. 140 separations.

[0030] exist figure 2 , schematically shows stator segments 210 , 220 coated with insulating material according to one embodiment 200 of the method according to the invention. The two stator segments 210 , 220 shown are coated with a soft magnetic insulating material provided according to the invention in the respective recess 204 and on the respective side face 202 before they are combined to form the stator of the electric machine. The polymer matrix of the soft-magnetic insulating material can be based, for example, on the basis of 3M 5...

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Abstract

The invention relates to a method for producing a slot base insulation in a stator (210, 220), wherein the stator (210, 220) is part of an electrical machine and is constructed from a ferromagnetic material. The stator (210, 220) is provided with at least one slot (204) to fit a winding wire (122) in the at least one slot (204). The at least one slot (204) is coated with a soft-magnetic insulationmaterial. In addition, a stator (210, 220) provided with the optimized slot base insulation is also described.

Description

technical field [0001] The invention relates to an optimized groove bottom insulation layer in the stator of an electrical machine. Furthermore, a stator with an optimized groove bottom insulation is claimed. Background technique [0002] In conventional electric machines for high voltages (such as traction motors in electric vehicles), on the one hand the winding wires are mostly insulated by varnishes, and on the other hand the steel parts to be wound (in electric vehicles in most cases Below is the stator sheet provided with at least one groove) with pre-folded insulating paper laid before winding. The insulating paper is also called a so-called "slot liner" and is mostly made of aramid fiber or inorganic ceramic fiber. Insulating the bottom of the grooves with insulating paper creates a second insulation barrier to the conductive stator sheets and covers the sharp edges of the sheets to avoid damage to the varnish insulation of the winding wires. The stator is often c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K15/10H02K15/12H02K3/34
CPCH02K15/10H02K15/12H02K3/345H02K9/223H02K3/30H02K15/0012H02K15/0018
Inventor S·格利茨O·海尔
Owner DR ING H C F PORSCHE AG