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Double-winding motor stator structure and manufacturing process thereof

A motor stator and manufacturing process technology, applied in the shape/style/structure of winding insulation, manufacturing motor generators, manufacturing stator/rotor body, etc., can solve the heat transfer of working windings, affect the heat dissipation effect, and limit the maximum output power of the motor and other issues to achieve the effect of reducing thermal resistance, reducing gaps, and improving heat dissipation

Inactive Publication Date: 2016-09-21
TIANJIN SANTROLL ELECTRIC AUTOMOBILE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The stator of the concentrated winding motor usually uses insulating paper or insulating frame as the main insulation between the stator core and the winding. Due to the production process, there will be an air gap between the insulating paper or insulating frame and the coil when the coil is wound, and for For double-winding motors, the two sets of windings work separately to ensure the reliability of the motor, so the time for the two windings to work at the same time is very small, and most of the time is for a single set of windings to work alone, which will cause a lot of heat in the working winding , the non-working winding generates almost no heat, and there is an air gap between the two sets of windings. However, the thermal conductivity of air (about 0.028W / m / K) is only equivalent to that of general insulating materials (0.3W / m / K). One tenth, it is difficult to transfer the heat of the working winding to the non-working winding, which will greatly affect the heat dissipation effect, limit the maximum output power of the motor, and affect the improvement of the power density of the motor

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  • Double-winding motor stator structure and manufacturing process thereof
  • Double-winding motor stator structure and manufacturing process thereof
  • Double-winding motor stator structure and manufacturing process thereof

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Embodiment approach

[0023] Such as figure 1 Shown is a partial schematic diagram of the stator structure of a traditional double-winding motor. The first stator core 1 and the second stator core 2 are formed by lamination of punched sheets. The pressure is irregular, which leads to an air gap between the first stator core 1 and the first insulating frame 3, and an air gap between the second stator core 2 and the second insulating frame 4. air gap, and because the first coil 5 and the second coil 6 will not completely fit the first insulating frame 3 and the second insulating frame 4 during the winding process, that is, the first insulating frame 3 and the second insulating frame 4 There will be an air gap between the first coils 5, and there will be an air gap between the second insulating frame 4 and the second coil 6. Due to the low thermal conductivity of the air, the first coil 5 The efficiency of transferring the heat generated by the second coil 6 to the first insulating frame 3 and the se...

no. 1 example

[0027] For the first embodiment, the specific implementation steps are as follows:

[0028] (1) Punching laminated iron core, a certain number of stator punching laminations are laminated into a stator core, and the riveting fastness between the laminations and the lamination height must meet the requirements;

[0029] (2) Injection-molded insulating skeleton, using the entire iron core as an inlay in injection molding, and under the action of the injection mold, the inner surface of the winding groove on both sides of the iron core and the two end surfaces are injected with insulating and heat-conducting materials with a certain strength as insulation skeleton;

[0030] (3) Coil winding, put the stator core with insulating skeleton into the winding machine, and wind the enameled wire that meets the specified wire diameter requirements into a coil. The number of turns should meet the requirements to ensure that the wiring between turns is smooth, reasonable, and orderly;

[...

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Abstract

The invention discloses a double-winding motor stator structure and a manufacturing process thereof. The vacuum injection of thermal conductive glue between the coils of two sets of windings is carried out, the gap between the coils of the two sets of windings is filled, the heat of working winding coils is exported through the insulation frame of the coils and a stator iron core and also is transferred to non-working winding coils through the thermal conductive glue, thus the heat radiation effect of a motor is improved, and the power density of the motor is improved at the same time.

Description

technical field [0001] The invention relates to a motor stator structure, in particular to a structure and a manufacturing process of a double-winding motor stator. Background technique [0002] The stator of the concentrated winding motor usually uses insulating paper or insulating frame as the main insulation between the stator core and the winding. Due to the production process, there will be an air gap between the insulating paper or insulating frame and the coil when the coil is wound, and for For double-winding motors, the two sets of windings work separately to ensure the reliability of the motor, so the time for the two windings to work at the same time is very small, and most of the time is for a single set of windings to work alone, which will cause a lot of heat in the working winding , the non-working winding generates almost no heat, and there is an air gap between the two sets of windings. However, the thermal conductivity of air (about 0.028W / m / K) is only equi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/12H02K1/16H02K3/34H02K15/02
CPCH02K1/12H02K1/16H02K3/34H02K15/026
Inventor 余国权
Owner TIANJIN SANTROLL ELECTRIC AUTOMOBILE TECH CO LTD