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Pressure adjuster for rotary electric machine

A technology of rotating motors and adjusting devices, which is applied in the direction of electromechanical devices, electrical components, electric components, etc., can solve problems such as complex structures and cost increases, and achieve the effect of low-cost structures

Inactive Publication Date: 2017-12-05
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, the above-mentioned techniques of Patent Documents 1 to 3 all require a complicated structure, which leads to an increase in the cost of vehicles equipped with motors, etc.

Method used

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  • Pressure adjuster for rotary electric machine
  • Pressure adjuster for rotary electric machine
  • Pressure adjuster for rotary electric machine

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0043] figure 1 It is a perspective view of the motor system S of 1st Embodiment of this invention.

[0044] This motor system S (pressure adjusting device for a rotary electric machine) is applied to vehicles such as electric vehicles and hybrid vehicles, for example. The motor system S has a substantially rectangular parallelepiped housing 10 , a motor 12 (rotary electric machine), a shaft 16 , gears 18 and 20 , and a housing internal pressure regulator 30 .

[0045] The motor 12 has a substantially cylindrical stator 12a fixed inside the housing 10, and a rotor 12b that rotates relative to the stator 12a. Gears 18 and 20 are coupled to the rotor 12b via a shaft 16, and when the rotor 12b rotates, the shaft 16 and the gears 18 and 20 rotate together. The housing 10 accommodates the motor 12, the shaft 16, the gears 18, 20, and the like in an airtight state. The housing internal pressure regulator 30 has check valves 32 and 34 , and the internal pressure of the housing 10 ...

no. 2 approach

[0052] Next, a motor system according to a second embodiment of the present invention will be described.

[0053] The overall structure of this embodiment is different from that of the first embodiment ( figure 1 )same. However, in this embodiment, instead of the pressure regulator 30 in the frame of the first embodiment, a image 3 The shown in-frame pressure regulator 40 is attached to the frame body 10 .

[0054] The housing pressure regulator 40 has a diaphragm valve 41 and a check valve 32 . In addition, the diaphragm valve 41 has an air chamber 42 and a switching unit 43 . The air chamber 42 has a diaphragm 42a that separates the air of the external pressure P0 from the internal pressure P1, and the diaphragm 42a is displaced according to the pressure difference between the external pressure P0 and the internal pressure P1.

[0055] In addition, the switching unit 43 is coupled to the diaphragm 42 a, and is displaced according to the displacement of the diaphragm 42 ...

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Abstract

An air pressure adjuster includes a rotary electric machine; a casing housing the rotary electric machine hermetically; and an in-casing air pressure adjuster for adjusting an internal air pressure using a drive force generated a difference between the internal air pressure and an outer pressure of the casing. The in-casing air pressure adjuster discharges the air from the inside of the casing to the outside of the casing when the internal air pressure is higher than the external air pressure by a first predetermined value.

Description

technical field [0001] The present invention relates to a pressure regulating device for a rotating electric machine. Background technique [0002] Within the air pressure that humans can live in, according to Paschen's law, the lower the air pressure, the lower the voltage at which the discharge starts between conductors placed in the atmosphere. Therefore, for example, motors used in vehicles such as electric vehicles and hybrid vehicles have sufficient insulation performance at low locations, but insufficient insulation performance at high locations may cause problems such as discharge. [0003] Various techniques have been proposed to compensate for the reduction in insulation performance associated with such a reduction in air pressure. For example, Patent Document 1 below discloses a technique for reducing the voltage applied to a motor when the atmospheric pressure becomes low. In addition, Patent Document 2 below discloses a technique for increasing the air pressur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K11/00
CPCH02K11/00H02K2205/09H02K5/10H02K3/40
Inventor 立川纯也
Owner HONDA MOTOR CO LTD