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Rotary motor and vehicle carrying same

A technology of rotating motors and rotating shafts, which is applied in the direction of battery/battery traction, synchronous motors with stationary armatures and rotating magnets, motors, etc., which can solve problems such as difficult operation in high-speed rotating areas and narrow variable speed ranges

Inactive Publication Date: 2006-06-28
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, although a large torque can be obtained in a permanent magnet type synchronous rotating machine, it is difficult to operate in a high-speed rotation region because the variable range of the rotational speed is narrow

Method used

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  • Rotary motor and vehicle carrying same
  • Rotary motor and vehicle carrying same
  • Rotary motor and vehicle carrying same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Refer below Figure 1-Figure 8 The first embodiment of the present invention will be described. FIG. 4 shows the configuration of the driving device of the hybrid vehicle according to the present embodiment. The driving device of the present embodiment mechanically connects a permanent magnet type synchronous rotating electrical machine 2 between an engine 1 which is an internal combustion engine generating driving force for a vehicle, and a transmission 3 . The connection between the engine 1 and the permanent magnet type synchronous rotating electrical machine 2 adopts the method of directly connecting the output shaft (also referred to as the crankshaft) omitted from the figure of the engine 1 and the rotating shaft of the permanent magnet type synchronous rotating electrical machine 2 or by reducing the speed by planetary gears. A method of connecting a transmission composed of a mechanism, etc.

[0043] On the other hand, the connection between the transmission d...

Embodiment 2

[0066] Below, according to Figure 8-Figure 10 A second embodiment of the present invention will be described. Figure 8-Figure 10 The configuration of the permanent magnet type synchronous rotating electrical machine of this embodiment is shown. This embodiment is an improved example of the above-mentioned first embodiment. Like the first embodiment, the stator core 10 is connected to the inner peripheral side of the casing 13 forming a plurality of cooling water passages 12 communicating in the axial direction and flowing through the cooling water in the circumferential direction. The stator core 10 is equipped with armature windings in the slots. 11. Annular end brackets 49 serving as frame members are provided at both ends of the casing 13 . A bearing device 50 for rotatably supporting the shaft 22 is provided on the inner peripheral side of the end bracket 49 .

[0067] The rotor 20, which is rotatably arranged on the inner peripheral side of the stator core 10, is sp...

Embodiment 3

[0080] The following is based on Figure 11 A third embodiment of the present invention will be described. Figure 11 The structure of the rotor of the permanent magnet type synchronous rotating electrical machine of this embodiment is shown. This embodiment is an improved example of the above-mentioned second embodiment. Only the parts that are different from the previous example will be described below.

[0081] In the present embodiment, a concave portion 53 having an inner diameter larger than the outer diameter of the shaft 22 is provided on the inner peripheral portion of the side surface of the first rotor 20A (the side surface of the second rotor 20B side). On the side surface of the second rotor 20B facing the concave portion 53 of the first rotor 20A, a convex portion 54 (convex portion) having an inner diameter smaller than the inner diameter of the concave portion 53 and larger than the outer diameter of the shaft 22 is provided. It is the same as the inner diam...

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PUM

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Abstract

A rotational electric machine (2) in which a rotor (20) having different-polarity field magnets arranged alternately in a rotational direction is divided axially into two rotor portions (20A, 20B) so that the axial position of one of the two rotor portions is changed relative to that of the other in accordance with a direction of torque of the rotor or the phase of synthesized magnetic poles of the field magnets is changed relative to that of magnetic poles of the other rotor portion in accordance with a direction of torque of the rotor, and a vehicle loaded with the rotational electric machine.

Description

technical field [0001] The present invention relates to a rotating electrical machine capable of changing an effective magnetic flux according to a rotational speed, and a vehicle equipped with the rotating electrical machine. Background technique [0002] In rotating electrical machines, especially permanent magnet synchronous rotating electrical machines mounted in vehicles such as hybrid cars and electric vehicles, the induced electromotive force is determined by the constant magnetic flux generated by the permanent magnets arranged on the rotor and the rotational angular velocity of the rotating electrical machine. That is, as the rotational angular velocity of the rotating electrical machine increases, the induced electromotive force of the rotating electrical machine increases proportionally. Therefore, although a large torque can be obtained in a permanent magnet type synchronous rotating machine, it is difficult to operate in a high-speed rotation region because the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K21/00H02K1/22B60K6/20B60K6/26B60K6/485B60K6/54B60L50/10B60W10/08B60W20/00H02K1/27H02K7/00H02K7/12H02K16/02H02K21/16H02K29/06H02P21/00
CPCY02T10/70Y10S903/906Y02T10/6217Y10S903/917B60W10/08Y02T10/6226B60K6/26B60L11/123H02K21/029B60W20/00B60K6/54B60L15/025B60L11/14Y02T10/7077B60K6/485Y02T10/641Y10S903/903Y02T10/643B60L50/16B60L50/61Y02T10/62Y02T10/64Y02T10/7072H02P21/00B60K6/38B60W10/02B60W2710/027
Inventor 金弘中冈部悟
Owner HITACHI LTD