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Cooling jacket for an electric machine and method of assembling the jacket and an electric machine equipped with the cooling jacket

A cooling jacket and cooling cavity technology, used in cooling/ventilation devices, electromechanical devices, manufacturing of motor generators, etc., can solve the problems of material structure change, assembly and time consumption, and achieve the effect of low cost and optimization of light structure potential

Inactive Publication Date: 2016-01-27
VOLKSWAGEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] It has been found to be disadvantageous that sufficient accessibility of the connection points must be provided during welding
Furthermore, increased assembly and time expenditure due to the welding process
Furthermore, during welding, temperature peaks occur in the inner and outer shells, which can lead to unfavorable changes in the material structure

Method used

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  • Cooling jacket for an electric machine and method of assembling the jacket and an electric machine equipped with the cooling jacket
  • Cooling jacket for an electric machine and method of assembling the jacket and an electric machine equipped with the cooling jacket
  • Cooling jacket for an electric machine and method of assembling the jacket and an electric machine equipped with the cooling jacket

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Embodiment Construction

[0062] figure 1 A perspective illustration of an electric machine 1 is shown, comprising a stator, not further shown, and a rotor, likewise not shown, mounted rotatably about an axis of rotation 2 . The rotor is connected to shaft 3. A cooling jacket 4 surrounding the stator is provided for cooling the electric machine 1 .

[0063] With the help of figure 2 The cooling jacket 4 for cooling the electric machine 1 and designed as a sleeve is further explained. The cooling jacket 4 comprises a cylindrical inner shell 5 , also referred to as the stator carrier, and a likewise cylindrical outer shell 6 , which surrounds the inner shell 5 at least in sections and is arranged concentrically. In this case, the longitudinal center axis 7 of the cooling jacket 4 is arranged coaxially with the axis of rotation 2 of the rotor or shaft 3 . The inner space 8 of the cooling jacket 4 , which is provided for accommodating the stator, is delimited radially by the inner shell 5 and the oute...

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PUM

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Abstract

The invention relates to a cooling jacket (4) for an electrical machine. The cooling jacket (4) has an inner shell (5) and an outer shell (6) and a cooling chamber (11) extending between the inner shell (5) and the outer shell (6) and enables throughflow of a coolant. In this case, the inner shell (5) and the outer shell (6) are connected by at least one connection portion matched in terms of materials, and the cooling space (11) is hermetically sealed. According to the invention, the at least one connection portion matched in terms of materials between the inner shell (5) and the outer shell (6) is designed as an adhesive connection poration (12). Moreover, the invention relates to a method for mounting the cooling jacket (4) and one electric machine with the cooling jacket (4).

Description

technical field [0001] The invention relates to a cooling jacket for an electric motor with an inner shell and an outer shell and a cooling chamber extending between the inner shell and the outer shell and through which a coolant can flow, wherein the inner shell and the outer shell are connected by at least one cohesive connection part, and the cooling chamber is hermetically sealed by this cohesive connection. Furthermore, the invention relates to a method for assembling a cooling jacket for an electric machine and an electric machine equipped with the cooling jacket. Background technique [0002] Electric machines are used in many technical fields as motors or generators, in most cases have a stationary stator(s) and a rotatably mounted rotor(s) and generate waste heat during operation, which can significantly Limits the efficiency and life of the motor. [0003] In particular electric machines with a high power density require cooling, which is achieved either with air...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K9/19H02K5/20H02K15/14
CPCH02K5/203
Inventor M.蓬特J.托森P.吕克M.埃斯托夫
Owner VOLKSWAGEN AG