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Hollow shaft arrangement

A hollow shaft and rotor shaft technology, which is applied in the field of assembling hollow shaft devices, can solve problems such as limited cooling performance, and achieve the effects of good cooling capacity, low friction loss, and low cost

Active Publication Date: 2018-02-06
THYSSENKRUPP PRESTA TECCENTER AG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the inner diameter of the hollow shaft and thus the diameter size of the area that can be used for cooling is very small, which leads to a limited cooling performance

Method used

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Embodiment Construction

[0022] figure 1 A hollow shaft arrangement 1 according to the invention is shown, which can be used, for example, in a drive train of a hybrid vehicle. The hollow shaft arrangement 1 comprises a rotor shaft 2 in the form of a hollow shaft. The rotor of the electric motor is fastened on the outer periphery of the rotor shaft 2 . The laminated core 4 of the rotor can be seen. At one axial end of the rotor shaft 2 , said shaft comprises a first shaft part 16 which can be connected to an internal combustion engine. A fan wheel 19 is arranged between the internal combustion engine and the rotor shaft 2 , through which cooling fluid is conveyed into the interior space 3 of the hollow shaft. On the other axial end of the rotor shaft 2, said shaft comprises a second shaft part 17 with internal teeth 20, the second shaft part being connectable to a shift gearbox (not shown) connected to the drive shaft . The rotor shaft 2 is mounted relative to the vehicle body or vehicle frame vi...

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Abstract

The invention relates to a hollow shaft arrangement (1), comprising a hollow shaft (2), in particular a rotor shaft of an electric motor, through which a fluid can be passed for the purpose of cooling, wherein in an inner space (3) of the hollow shaft (2), surface-enlarging cooling structures (9) for transferring thermal energy from the hollow shaft (2) to the fluid are arranged. The cooling structures (9) are connected to the hollow shaft (2), wherein the cooling structures (9) are part of a cooling body (8), which is formed separately from the hollow shaft (2).

Description

technical field [0001] The invention relates to a hollow shaft arrangement according to the preamble of claim 1 and a method for assembling a hollow shaft arrangement according to claim 9 . Background technique [0002] DE 10 2008 043 367 A1 discloses a hybrid drive for a motor vehicle, which has an internal combustion engine and an electric motor, each for driving the motor vehicle. The rotor of the electric motor is arranged on the hollow shaft of the transmission system. The means for conveying a cooling fluid conveys said cooling fluid through the interior space of the hollow shaft in order to cool the rotor and the hollow shaft. [0003] The cooling fins are arranged in the interior of the hollow shaft so that heat can be transferred optimally to the cooling fluid. The cooling fins are integrally formed on the inner wall of the hollow shaft in a rather complicated manner. In addition, the inner diameter of the hollow shaft and thus the diameter size of the region ava...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K1/00B60K17/22H02K1/32H02K9/00
CPCB60K1/00B60K17/22H02K1/32H02K9/00B60K17/24B60K2001/006H02K9/227F16D2300/0214B60Y2304/07B60Y2306/05B60K6/26F16C3/02H02K5/18
Inventor 曼弗雷德·马斯特尔丹尼尔·保罗
Owner THYSSENKRUPP PRESTA TECCENTER AG