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Generator motor and electric vehicle using same

一种发电电动机、电枢绕线的技术，应用在电动汽车、电动汽车充电技术、电机等方向，达到高输出密度化、提高冷却效果的效果

Inactive Publication Date: 2014-04-30
HITACHI CONSTRUCTION MACHINERY CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, due to the heat transfer from the engine and hydraulic pump, high-output operation is performed in a high-temperature environment, so it is necessary to consider the cooling structure

Method used

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  • Generator motor and electric vehicle using same
  • Generator motor and electric vehicle using same
  • Generator motor and electric vehicle using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] refer to Figure 1 to Figure 5 The generator motor according to the first embodiment of the present invention will be described in detail below. figure 1 It is an axial sectional view showing the overall structure of the generator motor according to the first embodiment of the present invention. figure 2 It is an exploded view showing the oil passage in the bracket of the generator motor of the first embodiment. image 3 It is a cross-sectional view showing the relationship between the armature windings and the positions of the oil injection holes in the generator motor of the first embodiment. Figure 4 is a cross-sectional view perpendicular to the axis of the housing of the generator motor and the auxiliary oil reservoir in the first embodiment, and is figure 1 The A-A' section plane view. Figure 5 It is a figure which shows the measurement result of the temperature distribution of the armature winding of the generator motor of 1st Example.

[0039] exist figu...

Embodiment 2

[0055] refer to Figure 6 A generator motor according to a second embodiment of the present invention will be described below. Figure 6 It is a cross-sectional view showing the relationship between the armature winding and the diameter of the oil injection hole in the generator motor of the second embodiment. exist Figure 6 in, for with image 3 The same constituent elements are attached with the same symbols to avoid repeated explanations.

[0056] The second embodiment and image 3 The first embodiment shown is different in that the oil injection holes 204 provided in the ring 203 are provided on the entire circumference so that the diameter of the oil injection holes 204 is larger in the vertical direction, smaller in the horizontal direction, and smaller in the vertical direction. In other words, the second embodiment is an example in which the diameter of the injection hole 204 provided on the bracket 200 is increased vertically above the bracket 200 and gradually b...

Embodiment 3

[0059] refer to Figure 7 A generator motor according to a third embodiment of the present invention will be described below. Figure 7 It is a cross-sectional view showing the relationship between the armature windings and the number and diameter of oil injection holes in the generator motor of the third embodiment. exist Figure 7 in, for with image 3 The same constituent elements are attached with the same symbols to avoid repeated explanations.

[0060] The third embodiment and image 3 The first embodiment shown is different in that the number of oil injection holes 204 provided in the ring 203 is more in the upper part in the vertical direction and decreases in the horizontal direction, and the diameter of the oil injection holes 204 is set at The upper part is larger in the vertical direction and smaller in the horizontal direction.

[0061] also, Figure 7 The illustrated example is an example of increasing the diameter of the spray hole when the number of spray...

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PUM

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Abstract

To evenly cool down an armature winding along the circumferential direction of a stator in a generator motor. A generator motor includes a stator (1) fixed to the inner diameter side of a housing (18), a rotor (130) rotatably supported by a bearing (5), and an armature winding wound around the teeth of a stator core (110). A bracket (200) provided via the bearing (5) has a passage (201, 202) through which cooling oil flows and an injection hole (204) which communicates with the passage and injects cooling oil at a position opposite the winding end of the armature winding. Cooling oil is injected toward the winding end of the armature winding from the injection hole (204) of the bracket (200) arranged on both sides of a shaft (6) in the axial direction. In the flow distribution of oil from a plurality of the injection holes (204), oil flow is set to be greater the higher the position of the injection hole is above the level of the shaft (6). The placement pitch of the injection holes (204) on the bracket (200) is narrower at the upper positions in the vertical direction of the bracket (200), and gradually becomes wider closer to the level of shaft (6).

Description

technical field [0001] The present invention relates to a generator motor equipped with a permanent magnet for excitation on a rotor, and more particularly to a permanent magnet generator motor for an electric vehicle driven in a high-temperature environment. Background technique [0002] With the development of high residual magnetic flux density magnets, the performance of permanent magnet rotating electrical machines has been greatly improved and has been widely used. In particular, from the viewpoint of recent environmental regulations, high energy efficiency is required for motors for industrial use and home appliances, and the application rate of permanent magnet motors tends to be extremely high. [0003] In addition, in vehicle electric motors, a highly efficient system structure can be adopted as an auxiliary power source for the engine and transmission, so the permanent magnet synchronous motor has a high application rate and is positioned as an essential component...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K9/19
CPCH02K9/19Y02T10/641H02K5/161H02K3/24B60L2200/00Y02T90/16Y02T10/64H02K9/00H02K9/193H02K9/20H02K5/203B60L2200/40B60K2001/006
Inventor 菊地聪石田诚司三好努泽田逸郎石岛真青木茂德
Owner HITACHI CONSTRUCTION MACHINERY CO LTD
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