Motor air-cooled casing based on integrated extrusion molding and phase-change heat pipe technology

Abstract

The invention discloses a motor air-cooled casing based on integrated extrusion molding and phase-change heat pipe technology. The casing comprises a pipe shaped casing; the side wall of the casing is provided with at least four installation holes; the installation holes are provided with phase-change heat pipes and the outer side wall of the casing is provided with heat radiating fins. According to the invention, the casing utilizes phase-change heat pipes as heat conduction and soaking components; the phase-change heat pipes possess extremely high efficient heat conduction capability and the heat conduction coefficient is ten thousand times as that of the known metal and could achieve the rapid re-organization of the distributed heat energy inside a drive motor. As the phase-change heat pipes are installed in the installation holes, the large amount of heat concentrated in the stator core and the casing contact part can be spread rapidly to the entire casing, therefore, eliminating the problem with the over-heat in some parts of the casing and reducing the temperature difference of the casing substantially. In this way, the heat distribution can be re-organized so that more heat can be transmitted from the stator windings and the stator core to the fins on the casing for heat radiation and more excellent temperature control performance can be achieved for the drive motor.

Description

technical field [0001] The invention relates to an air-cooled motor casing based on integrated extrusion molding and phase change heat pipe technology. Background technique [0002] Focusing on promoting the development of the new energy automobile industry is a strategic measure to promote the transformation and upgrading of the automobile industry and build an environment-friendly society. Drive motor is the core component of new energy vehicles, and its performance has a direct and extremely important impact on new energy vehicles. Motor operating temperature directly affects motor efficiency, reliability and service life. If the temperature rise is too high, it is easy to accelerate the aging of the motor insulation material, shorten the service life, and cause the efficiency of the motor to decrease. The decrease in the efficiency of the motor will further lead to an increase in heat generation, which will push up the temperature again. Therefore, temperature control ...

AI Technical Summary

Problems solved by technology

Among them, for the forced air-cooled system, since the main heat-generating components of the drive motor are the stator winding and the stator core, and the heat transfer path of the two mainly depends on the contact part between the stator core and the air-cooled casing, therefore, usually , limited by the installation location, outlet method, and material cost, the above-mentioned contact area only accounts for one-third to one-half of the inner wall area of ​​the air-cooled enclosure, and the remaining area cannot be effectively used, resulting in wind The temperature of some parts of the cold case is too high and the temperature gradient is too large, so that the cooling fins at both ends of the air-cooled case cannot be well utilized, which in turn affects the temperature control performance of the drive motor; this problem needs to be solved urgently

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