Mechanically and electrically integrated module

Patent metadata

Field	Value
Publication number	US-9425673-B2
Application number	US-201314375625-A
Country	US
Kind code	B2
Filing date	Feb 4, 2013
Priority date	Feb 6, 2012
Publication date	Aug 23, 2016
Grant date	Aug 23, 2016

Abstract

A non-load-end end frame is housed and held in a non-load-end end-frame-holding portion of a frame in an internally fitted state, and recessed grooves that have groove directions in an axial direction are recessed into an outer circumferential surface of the non-load-end end frame. A stator coil and alternating-current terminals of an inverter apparatus are connected using connecting conductors that are passed through the recessed grooves.

First claim

The invention claimed is:

1. A mechanically and electrically integrated module comprising:
a rotary electric machine that comprises:
a housing that includes:
a cylindrical frame;
a load-end end frame that is disposed on a first axial end of said cylindrical frame; and
a non-load-end end frame that is disposed on a second axial end of said cylindrical frame, and into which a cooling flow channel is built;

a stator that includes:
an annular stator core that is housed and held in said cylindrical frame in an internally fitted state; and
a stator coil that is mounted onto said stator core; and

a rotor that is rotatably supported by said load-end end frame and said non-load-end end frame so as to be disposed on an inner circumferential side of said stator; and

an inverter apparatus that includes:
power modules that are disposed on an opposite side of said non-load-end end frame from said load-end end frame; and
a power-module-driving circuit,

wherein:
said cylindrical frame includes:
a non-load-end end-frame-holding portion that is formed by enlarging an inside diameter of a non-load-end end portion thereof, and that houses and holds said non-load-end end frame in an internally fitted state; and
a stator-core-holding portion that is formed at a load end of said non-load-end end-frame-holding portion so as to have a smaller diameter than said non-load-end end-frame-holding portion, and that houses and holds said stator core in an internally fitted state;

a recessed groove that has a groove direction in an axial direction is recessed into at least one of an outer circumferential surface of said non-load-end end frame and an inner circumferential surface of said non-load-end end-frame-holding portion; and
said stator coil and an alternating-current terminal of said inverter apparatus are connected by a connecting conductor that is passed through said recessed groove.

2. The mechanically and electrically integrated module according to claim 1 , wherein:
said cylindrical frame further comprises an inside-diameter-expanded portion that is formed by enlarging an inside diameter of said stator-core-holding portion near a non-load end; and
said stator coil is internally connected at said inside-diameter-expanded portion.

3. The mechanically and electrically integrated module according to claim 1 , wherein:
said power modules are disposed on a surface of said non-load-end end frame on an opposite side from said load-end end frame so as to line up circumferentially; and
recessed grooves are formed so as to correspond to each of said power modules.

4. The mechanically and electrically integrated module according to claim 3 , wherein each of said recessed grooves is disposed in circumferential spacing between pairs of said power modules that are circumferentially adjacent.

5. The mechanically and electrically integrated module according to claim 4 , further comprising electric current sensors that are disposed in said circumferential spacing between said pairs of circumferentially adjacent power modules.

6. The mechanically and electrically integrated module according to claim 3 , wherein said power modules are disposed on a surface of said non-load-end end frame on an opposite side from said load-end end frame so as to be distributed circumferentially so as to be inclined asymmetrically relative to radii that pass through centers thereof.

7. The mechanically and electrically integrated module according to claim 1 , wherein an insulating member is plugged into said recessed groove such that said connecting conductor is held by said non-load-end end frame and said non-load-end end-frame-holding portion.

8. The mechanically and electrically integrated module according to claim 1 , further comprising:
an end-frame-positioning groove that is recessed into a first of said outer circumferential surface of said non-load-end end frame and said inner circumferential surface of said non-load-end end-frame-holding portion; and
an end-frame-positioning projection that is disposed so as to protrude from a second of said outer circumferential surface of said non-load-end end frame and said inner circumferential surface of said non-load-end end-frame-holding portion so as to fit into said end-frame-positioning groove.

9. The mechanically and electrically integrated module according to claim 8 , wherein said recessed groove functions as said end-frame-positioning groove.

10. The mechanically and electrically integrated module according to claim 1 , wherein a groove width of said recessed groove widens gradually from a groove bottom portion toward a groove opening.

11. The mechanically and electrically integrated module according to claim 1 , wherein at least one of a groove width and a groove depth of said recessed groove increases gradually from said load end toward said non-load end.

Assignees

• Miyama Yoshihiro
• Hazeyama Moriyuki
• Mitsubishi Electric Corp

Inventors

• Miyama Yoshihiro
• Hazeyama Moriyuki

Classifications

• H02M7/003

  Constructional details, e.g. physical layout, assembly, wiring or busbar connections · CPC title

• H02K2213/03

  Machines characterised by numerical values, ranges, mathematical expressions or similar information · CPC title

• H02K11/33 Primary

  Drive circuits, e.g. power electronics (H02K11/38 takes precedence) · CPC title

• H02K5/24

  specially adapted for suppression or reduction of noise or vibrations · CPC title

• H02K11/0073 Primary

  Electricity · mapped topic