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Oil cooling stator structure

An oil-cooled stator and cold stator technology, applied in the direction of magnetic circuit shape/style/structure, winding conductor shape/style/structure, cooling/ventilation device, etc., can solve the problem of uneven cooling of the stator, and achieve the purpose of solving uneven cooling. uniform effect

Inactive Publication Date: 2021-04-23
HEFEI JUYI POWER SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the current related design, the cooling oil usually falls directly on the end of the stator and the winding for cooling, which easily leads to uneven cooling of the stator

Method used

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  • Oil cooling stator structure
  • Oil cooling stator structure
  • Oil cooling stator structure

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Experimental program
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Embodiment

[0023] Embodiment: This application provides an oil-cooled stator structure, combined with reference Figure 1 to Figure 5 , the oil-cooled stator structure includes: a motor housing 1 , a rear end cover 2 , and a stator 3 . The stator 3 includes a stator end wire case 31 and a stator core 32 .

[0024] combined reference Figure 1 to Figure 3 , the end of the rear end cover 2 and the motor housing 1 is provided with a circumferential oil groove 11, the cooling oil enters the oil groove 11 from the rear end cover 2 of the electric drive, and is introduced into the upper part of the electric drive along the oil groove 11; the motor casing The outer circumference of the body 1 is provided with an axial stator oil channel 12 close to the top, and the stator oil channel 12 communicates with the oil groove 11; the stator oil channel 12 is provided with an oil spray hole 13 corresponding to the cooling part, and the cooling oil flows from the The oil pouring hole 13 drops down to ...

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Abstract

The invention discloses an oil cooling stator structure which is characterized by comprising a motor shell, a rear end cover and a stator; the stator comprises a stator end coil and a stator iron core; circumferential oil grooves are formed in the rear end cover and the end of the motor shell; and cooling oil enters the oil grooves from the rear end cover of an electric driver and is led into the upper portion of the electric driver along the oil grooves; an axial stator oil distribution channel is arranged close to the upper portion of the outer circumference of the motor shell; the stator oil distribution channel is communicated with the oil grooves; oil spraying holes corresponding to cooling parts are formed in the stator oil distribution channel, and the cooling oil falls down from the oil spraying holes to directionally cool the stator end coil and the stator iron core. The oil liquid of the rear end cover of the electric driver is introduced into the stator oil distribution channel above the electric driver; and the oil spraying holes corresponding to the cooling parts are used for realizing directional cooling of the stator end coil and the stator iron core, so that the problem of non-uniform cooling of the stator is solved.

Description

technical field [0001] The invention belongs to the technical field of oil cooling and relates to an oil cooling stator structure. Background technique [0002] With the popularization of new energy vehicles, the market's demand for the performance of electric vehicle power systems continues to increase, and the volume and power density required for electric drive systems are also getting higher and higher, that is, the structure of the power system needs to be as compact and light as possible. Therefore, the market At present, they are mainly promoting the "three-in-one" product structure integrating three units of motor + reducer + controller. However, the traditional water-cooling scheme cannot directly cool the heat source, and there is thermal resistance. So there is a temperature gradient from the motor windings to the water-cooled casing. The winding cannot be cooled directly, causing temperature to build up and form localized hot spots. Therefore, it is necessary ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K9/19H02K5/20H02K1/20H02K5/04H02K5/10H02K3/24
CPCH02K1/20H02K3/24H02K5/04H02K5/10H02K5/20H02K9/19
Inventor 刘蕾程勇张平平郭殿伟
Owner HEFEI JUYI POWER SYST CO LTD
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