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Starter stator for motor vehicle having optimized remanence range

A technology for motor vehicles and starters, which is used in motor starting for engines, starting of engines, machines/engines, etc., can solve the problems of starter size, increase the thickness of the head, etc., to increase the induction strength and increase the service life. Effect

Inactive Publication Date: 2017-12-01
VALEO EQUIP ELECTRIC MOTEUR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is impossible to excessively increase the intensity of induction generated in the air gap, otherwise, to prevent its magnetic saturation, it will be necessary to increase the thickness of the head, which will cause problems with the size of the starter

Method used

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  • Starter stator for motor vehicle having optimized remanence range
  • Starter stator for motor vehicle having optimized remanence range
  • Starter stator for motor vehicle having optimized remanence range

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0044] figure 1 A starter 1 for an internal combustion engine of a motor vehicle is shown schematically. The DC starter 1 comprises: firstly a rotor 2 , also called an armature, which is rotatable about an axis X; and secondly, a stator 3 , also called an inductor, which is arranged around the rotor 2 . In the example shown, the rotating electric machine formed by the stator 3 and the rotor 2 is of the six-pole type.

[0045] The stator 3 described in detail below comprises a head 4 supporting a set of permanent magnets 5 .

[0046] The rotor 2 comprises a rotor body 7 and a winding 8 wound in a recess in the rotor body 7 . The rotor body 7 consists of a set of metal plates with longitudinal notches. To form the winding 8, the pins 11 (in the figure 2 A wire of the form shown more clearly in ) is inserted into the notch 16 . The windings 8 form blades 9 on both sides of the rotor body 7 .

[0047] At the rear, the rotor 2 is provided with a collector 12 comprising a plu...

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Abstract

The invention mainly relates to a motor vehicle starter stator (3) comprising: a cylinder head (4); and a set of permanent magnets (5) mounted against an inner face (41) of the cylinder head (4). Each permanent magnet (5) from the set is magnetically oriented in a radial manner. The stator is characterized in that the mean remanence of the permanent magnet set (5) is within a range of between 0.73 and 0.87 Tesla, in particular between 0.78 and 0.83 Tesla, and preferably between 0.79 and 0.81 Tesla.

Description

technical field [0001] The invention relates to a motor vehicle starter stator with an optimized range of residual magnetism. Background technique [0002] Motor vehicle starters are known provided with a stator or inductor comprising a plurality of permanent magnets, and a rotor, or armature, provided with a cylindrical body and windings formed of wires. [0003] In a known manner, an inductor comprises a metal head whose inner face supports a plurality of permanent magnets designed to generate an induction field. The permanent magnets are formed from cylindrical segments distributed angularly at regular intervals inside the head and uniformly separated with respect to the armature by a radial air gap. There are ferrite magnets whose basic remanence is approximately 0.4 Tesla. The permanent magnets are usually fixed on the inner face of the head with clips extending in the longitudinal direction in the spaces between the permanent magnets. The thickness dimension of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/17
CPCH02K1/17F02N11/00H02K1/02H02K2213/03
Inventor J-M.杜巴斯N.拉贝R.安杜勒克斯A.德维尔
Owner VALEO EQUIP ELECTRIC MOTEUR
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