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Liquid-cooled motor

A liquid cooling and liquid technology, applied in the direction of motors, cooling/ventilation devices, electric components, etc., can solve the problems of complex production, less cooling, and increase the number of components, and achieve the effect of simple manufacturing

Pending Publication Date: 2022-07-08
NIDEC PAS EMOTORS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such an arrangement increases the number of constituent parts of the machine and complicates its production
Furthermore, less cooling of the coil heads of the windings is detrimental to the performance of the motor

Method used

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  • Liquid-cooled motor
  • Liquid-cooled motor
  • Liquid-cooled motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038] exist figure 1An electric machine 1 according to the invention is partly shown, comprising a rotor 10 which rotates around an axis of revolution X inside a stator 20 .

[0039] The stator 20 comprises a stator metal plate stack 21 (with rotor metal plates inside) which is provided with notches for the electrical conductors of the windings. These conductors extend axially beyond the sheet metal stack 21 to form winding coil heads 22, also referred to as buns.

[0040] The rotor 10 comprises at least one rotor metal plate stack 11 carried by a shaft 40 which is guided by bearings (not shown). The shaft 40 carries at the front a pinion 48 which meshes with a driven element not shown. The end of the shaft 40 carrying the pinion 48 is also referred to as the "driveend".

[0041] Also as Figure 4 It can be seen that the stack 11 comprises receptacles 13 in which permanent magnets 14 are arranged, the magnetization of which may, if necessary, be performed after (they are)...

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PUM

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Abstract

The present invention relates to a liquid-cooled rotating electrical machine comprising an eternal magnet type rotor and a wound stator, the rotor comprising: (i) at least one stack of rotor metal plates, (ii) a magnet housed in the stack of metal plates, (iii) front and rear flanges adjacent to the stack of metal plates, the electric machine is configured to ensure a cross-shaped flow of the cooling liquid within the rotor sheet metal stack.

Description

technical field [0001] The present invention relates to rotating electrical machines, and more particularly to rotating electrical machines cooled by the circulation of a liquid, in particular oil, circulating at least partially along the axis of the electrical machine. [0002] The present invention more particularly relates to alternating current synchronous or asynchronous machines. The invention particularly relates to electric (Battery Electric Vehicle) and / or hybrid (Hybrid Electric Vehicle-Plug-inHybrid Electric Vehicle) motor vehicles, such as passenger vehicles Towing or propelling machines for cars, vans, trucks or buses. The invention also applies to rotating electrical machines for industrial and / or energy production, in particular naval, aviation or wind power. Background technique [0003] It is known to cool the winding coil heads of the stator by cooling liquid which is ejected by the rotor on these winding coil heads during operation of the electric machin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/32
CPCH02K1/32H02K1/2766H02K7/003H02K9/19H02K1/276H02K21/14
Inventor G·塔迪D·方蒂
Owner NIDEC PAS EMOTORS