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Rotating Electric Machines for Vehicles

A technology for rotating electric machines and vehicles, applied in the direction of magnetic circuit shape/style/structure, magnetic circuit static parts, etc., can solve the problems of increased number of components, increased manufacturing costs, increased assembly processes, etc., to improve output and environmental resistance Sexuality and the effect of reducing manufacturing costs

Inactive Publication Date: 2018-02-13
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the motor disclosed in Patent Document 1, in order to cool the stator winding, other components are required as a heat dissipation path, which increases the number of components and requires an increase in the assembly process.
Since the addition of such other components and additional assembly steps is related to an increase in manufacturing cost, it is not preferable

Method used

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  • Rotating Electric Machines for Vehicles
  • Rotating Electric Machines for Vehicles
  • Rotating Electric Machines for Vehicles

Examples

Experimental program
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Effect test

Embodiment Construction

[0016] Hereinafter, a vehicle alternator to which an embodiment of the vehicle rotating electrical machine of the present invention is applied will be described in detail with reference to the drawings. figure 1 A vehicle alternator 1 according to one embodiment shown is configured to include a stator 2 , a rotor 3 , a brush device 4 , a rectifier 5 , a frame 6 , a rear cover 7 , a pulley 8 and the like.

[0017] The stator 2 includes: an annular stator core 21 having a plurality of slots 22; three-phase stator windings 23 wound around the slots 22 of the stator core 21 at predetermined intervals; A sheet-shaped insulating member 24 electrically insulating the winding wire 23 ; and a cooling medium path 25 formed in the slot 22 .

[0018] like figure 2 As shown, the insulating member 24 has a shape along the inner peripheral surface of the slot 22 . The stator wire 23 is wound around the stator core 21 in a state where a plurality of conductors constituting the stator wire ...

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PUM

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Abstract

The present invention provides a rotating electric machine for a vehicle, which can effectively cool a stator winding without adding other components and an additional assembly process. A vehicle alternator (1) includes a stator (2) and a rotor (3), and the stator (2) includes: an annular stator core (21) having a plurality of slots (22); a stator winding (23) ), which is wound on the stator core (21) in a state of being offset radially inward in the slot (22); and a cooling medium path (25), which utilizes the The wire (23) is offset inward in the radial direction, and a space is formed in the groove (22), which is generated radially outward.

Description

technical field [0001] The present invention relates to a rotating electrical machine for a vehicle mounted on a passenger car, a truck, or the like. Background technique [0002] It is known that the existing electric motor has a structure in which the stator or rotor is directly cooled by refrigerant, and a heat dissipation path made of a material with high thermal conductivity is provided in the slot formed in the stator core (stator core), so that the inside of the slot The temperature difference with the outside is reduced (for example, refer to Patent Document 1). That is, the heat dissipation path reduces the size and weight of the motor by reducing the temperature difference between the inner and outer stator windings (stator coils) of the stator core. [0003] Patent Document 1: Japanese Patent Application Laid-Open No. 8-205477 [0004] However, in the motor disclosed in Patent Document 1, there is a problem that other components are required as heat dissipation ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/20H02K1/16
Inventor 延山阳德神谷英明甲村雅敏
Owner DENSO CORP