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High efficiency oil cooling permanent magnet synchronous motor (PMSM)

A permanent magnet synchronous motor and oil-cooled technology, which is applied to synchronous machine components, motors, electromechanical devices, etc., can solve the problem of heat islands formed by motors, and achieve the effects of improved reliability, good heat dissipation, and simple structure

Pending Publication Date: 2019-08-02
苏州朗高电机有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a high-efficiency oil-cooled permanent magnet synchronous motor, aiming to solve the problem of heat dissipation of the motor, especially the problem of heat island formation inside the motor, especially the problem of heat dissipation at the end of the winding group in the stator assembly

Method used

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  • High efficiency oil cooling permanent magnet synchronous motor (PMSM)
  • High efficiency oil cooling permanent magnet synchronous motor (PMSM)
  • High efficiency oil cooling permanent magnet synchronous motor (PMSM)

Examples

Experimental program
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Effect test

Embodiment 1

[0026] A high-efficiency oil-cooled permanent magnet synchronous motor, referring to the attached figure 1 As shown, it includes a casing 1, which is composed of a cylinder and end caps 11 at both ends of the cylinder. The casing 1 is provided with a stator assembly 2 and a rotor assembly, and a gap is left between the stator assembly 2 and the rotor assembly. Air gap 7; the rotor assembly includes a rotating shaft 31, a rotor punching set 32 ​​arranged on the rotating shaft 31, and rotor pressure plates 33 arranged at both axial ends of the rotor punching set 32; the stator assembly 2 includes a stator core and Stator winding; the rotor punching set 32 ​​is formed by stacking a plurality of rotor punchings 321 , and the rotor punching 321 is in interference fit with the rotating shaft 31 .

[0027] Refer to attached figure 1 As shown, the casing 1 is provided with an oil inlet, and the rotating shaft 31 is provided with a cavity 311 along its axial direction, and the cavity ...

Embodiment 2

[0038] See attached Figure 1-4As shown, a high-efficiency oil-cooled permanent magnet synchronous motor includes a casing 1, which is composed of a cylinder and end covers 11 at both ends of the cylinder. The casing 1 is provided with a stator assembly 2 and a rotor assembly. The stator There is an air gap 7 between the assembly 2 and the rotor assembly; the rotor assembly includes a rotating shaft 31, a rotor punching set 32 ​​arranged on the rotating shaft 31, and rotor pressure plates 33 arranged at both axial ends of the rotor punching set 32; The stator assembly 2 includes a stator core and a stator winding; the rotor punching set 32 ​​is formed by stacking a plurality of stator punchings 321 , and the rotor punching 321 is in interference fit with the rotating shaft 31 .

[0039] The casing 1 is provided with an oil inlet, and the rotating shaft 31 is provided with a cavity 311 along its axial direction. An oil throwing hole 312 is provided, and the oil throwing hole 3...

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Abstract

A high efficiency oil cooling PMSM comprises a casing, and the casing is internally provided with a rotor assembly and a stator assembly. The rotor assembly comprises a rotating shaft, a rotor punching sheet group and rotor pressure plates; the casing is provided with an oil inlet, the rotating shaft is internally provided with a cavity communicated with the oil inlet, and the rotating shaft is provided with an oil throwing hole communicated with the cavity; the central hole wall of the rotor punching sheet group is provided with an oil through channel communicated with the oil throwing hole;the end surface, abutting against the rotor punching sheet group, of each rotor pressure plate is provided with an annular oil through groove and a radial oil through groove; the annular oil through groove is communicated with each oil through channel; the end portions, towards the axial center of the rotating shaft, of the radial oil through grooves are communicated with the annular oil through groove, and the other ends of the radial oil through grooves are communicated with an oil through gap between the casing and the stator assembly; and an oil collecting groove is formed in the bottom ofthe inner wall of the casing, and an oil return hole is arranged in the bottom of the oil collecting groove, and is communicated with the oil inlet via an external channel.

Description

technical field [0001] The invention relates to the field of permanent magnet synchronous motors, in particular to a water-cooled and oil-cooled permanent magnet synchronous motor suitable for new energy electric vehicles. Background technique [0002] The permanent magnet synchronous motor is the source of power for new energy vehicles, and as a key component that converts power and mechanical energy, the motor plays an important role in the new source of power. key points to overcome. If the current permanent magnet synchronous motor is to achieve high efficiency and work stably under various harsh working conditions, heat dissipation has become a top priority. Especially for high-power motors, the problem of heat dissipation is particularly prominent without increasing the volume or weight. [0003] In the prior art, the rotor and the oil storage surface tangentially throw oil; the problem of this heat dissipation method is: the rotor is in contact with the oil storage,...

Claims

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Application Information

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IPC IPC(8): H02K9/197H02K1/20H02K1/32H02K21/02H02K9/26H02K9/193
CPCH02K9/197H02K1/20H02K1/32H02K21/02H02K9/26H02K9/193Y02T10/64
Inventor 江轶
Owner 苏州朗高电机有限公司