Automobile generator stator structure

Abstract

The invention provides an automobile generator stator structure which is applied in the technical field of automobile generators. The automobile generator stator structure is configured such that a stator core (1) is provided with iron core grooves (4) thereon. Each insulating winding (2) has winding copper wires (5) which are wound within iron cores (4). The winding copper wires (5) and each iron core groove (4) are provided with a groove insulation paper (6) therebetween. Each groove insulation paper (6) is provided with an installation opening (7) thereon. The installation opening (7) is provided with an isolation rib (8) in the middle part of the installation opening (7). According to the invention, different groups of winding copper wires within the groove insulation paper (6) can be effectively isolated, so that even when insulating varnish on an external surface of the winding copper wire drops or when there is a scratch or the groove insulation paper is damaged, contact between different winding copper wires can be effectively avoided, and the risk of short circuit among turns of the different winding copper wires can be avoided.

Description

technical field [0001] The invention belongs to the technical field of automobile generators, and more specifically relates to a stator structure of automobile generators. Background technique [0002] At present, the stator structures for automotive generators are mainly divided into round copper wire stators and flat copper wire stators, among which flat copper wire stators are widely used in existing generators due to their high output and high efficiency. The stator is composed of stator core, stator winding and slot insulation paper. The stator winding is evenly wound in the iron core slot, and the stator winding is enamelled flat copper wire. The slot insulating paper and the insulating varnish on the surface of the winding together protect the copper wires when the stator is subjected to high voltage impact. However, the existing slot insulating paper has an elliptical structure, and the copper wires of the stator winding are close together in the slot insulating pap...

AI Technical Summary

Problems solved by technology

However, the existing slot insulating paper has an elliptical structure, and the copper wires of the stator winding are close together in the slot insulating paper. At the same time, due to the existing process, when the stator winding copper wires are inserted into the slot insulation, the paint may fall off to varying degrees. , scratches, and at the same time, the slot insulation may be damaged when the generator is running for a long time, which will cause the copper wire to directly contact the iron core

However, the stator may be subjected to one or more high-voltage inspections before leaving the factory, so that these stators with quality problems will not be found

However, under the long-term use of the whole vehicle, there may be multiple high-voltage shocks, which may cause a short circuit between turns of the stator.

Reduced generator life, early failure

According to the current after-sales feedback of generators, the proportion of low or no output of generators caused by inter-turn short circuit of stator windings is relatively large.

High after-sales failure rate and high after-sales claims

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