A Bearing Structure for Oil Cooling of Outer Rotor Permanent Magnet Synchronous Motor

A permanent magnet synchronous motor and outer rotor technology, applied in the field of bearings, can solve the problems of not being able to achieve complete sealing, affecting the use efficiency of the motor, poor waterproof and oil-proof performance, etc., and achieve the effect of simplifying the structure, prolonging the service life, and cooling uniformly

Active Publication Date: 2022-06-28
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
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Problems solved by technology

The waterproof and oil-proof performance of ordinary bearings is relatively poor, or this performance is not considered, and complete sealing cannot be achieved, and the coolant is likely to overflow, which affects the efficiency of the motor.

Method used

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  • A Bearing Structure for Oil Cooling of Outer Rotor Permanent Magnet Synchronous Motor
  • A Bearing Structure for Oil Cooling of Outer Rotor Permanent Magnet Synchronous Motor
  • A Bearing Structure for Oil Cooling of Outer Rotor Permanent Magnet Synchronous Motor

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Embodiment Construction

[0029] Below in conjunction with accompanying drawing, the technical scheme of the present invention is described in further detail:

[0030] The present invention may be embodied in many different forms and should not be considered limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, components are exaggerated for clarity.

[0031] like figure 1 , figure 2 , image 3 As shown, the present invention discloses a bearing structure for oil cooling of an outer rotor permanent magnet synchronous motor, comprising a bearing seat, a first main bearing, a second main bearing, a first auxiliary bearing and a second auxiliary bearing;

[0032] The first main bearing and the second main bearing both include an inner ring, an outer ring, a cage and two circlips, wherein the outer wall of the inner ring and...

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Abstract

The invention discloses an oil-cooled bearing structure for an outer rotor permanent magnet synchronous motor, which comprises a bearing seat, a first main bearing, a second main bearing, a first auxiliary bearing and a second auxiliary bearing. Both the first main bearing and the second main bearing include an inner ring, an outer ring, a cage, two circlips and a sealing ring; the first main bearing and the second main bearing adopt ball bearings; the first main bearing and the second main bearing They are respectively arranged on both sides of the bearing seat; the two sides of the bearing seat are respectively bonded to the inner rings of the first main bearing and the second main bearing; side. A cavity for the circulation of the cooling liquid is formed between the first main bearing and the second main bearing, and a through hole for the inflow and outflow of the cooling liquid is provided on the bearing seat. The present invention adopts the above technical solution, which greatly simplifies the structure of the cooling device of the motor, improves the cooling efficiency, and prolongs the service life of the motor.

Description

technical field [0001] The invention relates to the technical field of bearings, in particular to a bearing structure for oil cooling of an outer rotor permanent magnet synchronous motor. Background technique [0002] In today's hybrid vehicles, the development of extended-range electric vehicles is in full swing. The motor of the extended-range electric vehicle generally adopts an external rotor permanent magnet synchronous motor, and its cooling method adopts water cooling, and a spiral water channel is processed in the stator. The disadvantage of water cooling is mainly that the cooling is uneven, and it only has a significant effect on the cooling of the front end of the stator. At the same time, the water cooling is used to connect with the extended-range electric vehicle engine, the structure is more complicated, and the resistance of the water flow increases. For this reason, we consider that an oil cooling system can be shared with the engine. The crankshaft of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K7/08H02K5/173H02K9/193H02K1/20F16C19/49F16C19/52F16C33/78F16C37/00
Inventor 林棻王少博赵又群李剑垒蔡亦璋
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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