Rotating electric machine drive unit

Patent metadata

Field	Value
Publication number	US-11271500-B2
Application number	US-202016870167-A
Country	US
Kind code	B2
Filing date	May 8, 2020
Priority date	May 9, 2019
Publication date	Mar 8, 2022
Grant date	Mar 8, 2022

Abstract

A rotating electric machine drive unit includes a first rotating electric machine; a second rotating electric machine; a rotating electric machine housing having a rotating electric machine accommodation portion; a power control unit having a power conversion unit which controls at least one of the first rotating electric machine and the second rotating electric machine; and a connecting member which electrically connects at least one of the first rotating electric machine and the second rotating electric machine to the power conversion unit of the power control unit. When viewed from a rotation axis direction of the first rotating electric machine and the second rotating electric machine, a part of the power control unit is disposed so as to overlap with at least one of the rotating electric machine housing and the first rotating electric machine in a radial direction of the first rotating electric machine.

First claim

The invention claimed is:

1. A rotating electric machine drive unit comprising:
a first rotating electric machine;
a second rotating electric machine having a rotation axis positioned parallel to a rotation axis of the first rotating electric machine and shifted in at least one of an up-down direction and a horizontal direction;
a rotating electric machine housing having a rotating electric machine accommodation portion accommodating at least the first rotating electric machine;
a power control unit having a power conversion unit which controls at least one of the first rotating electric machine and the second rotating electric machine; and
a connecting member which electrically connects at least one of the first rotating electric machine and the second rotating electric machine to the power conversion unit of the power control unit, wherein
when viewed from a rotation axis direction of the first rotating electric machine and the second rotating electric machine, the power control unit is disposed on the outer peripheral surface of the rotating electric machine housing, and wherein
when viewed from the rotation axis direction of the first rotating electric machine and the second rotating electric machine, a part of the power control unit is disposed so as to overlap with at least one of the rotating electric machine housing and the first rotating electric machine in a radial direction of the first rotating electric machine.

2. The rotating electric machine drive unit according to claim 1 , wherein
at least a part of the connecting member is disposed at a position overlapping with the first rotating electric machine in the rotation axis direction when viewed from the radial direction.

3. The rotating electric machine drive unit according to claim 1 , wherein
the first rotating electric machine includes,
a first rotor, and
a first stator including a first stator core surrounding an outer periphery of the first rotor and a first coil mounted on the first stator core, and

circuit components constituting the power conversion unit are arranged so as not to overlap with the first stator core in the rotation axis direction when viewed from the radial direction.

4. The rotating electric machine drive unit according to claim 3 , wherein
the second rotating electric machine includes,
a second rotor, and
a second stator including a second stator core surrounding an outer periphery of the second rotor and a second coil mounted on the second stator core, and

at least a part of the circuit components of the power conversion unit is disposed so as to overlap with the second stator core in the rotation axis direction when viewed from the radial direction.

5. The rotating electric machine drive unit according to claim 1 , wherein
the connecting member includes,
a first connecting member which electrically connects the first rotating electric machine and the power conversion unit of the power control unit, and
a second connecting member which electrically connects the second rotating electric machine and the power conversion unit of the power control unit,

the first connecting member includes a first rotating electric machine side connecting member, a first rotating electric machine side connecting portion for electrically connecting the first rotating electric machine side connecting member and the first rotating electric machine, a first power conversion unit side connecting member connected to and electrically connected to the first rotating electric machine side connecting member, and a first power conversion unit side connecting portion that electrically connects the first power conversion unit side connecting member and the power conversion unit,
the second connecting member includes a second rotating electric machine side connecting member, a second rotating electric machine side connecting portion for electrically connecting the second rotating electric machine side connecting member and the second rotating electric machine, a second power conversion unit side connecting member connected to and electrically connected to the second rotating electric machine side connecting member, and a second power conversion unit side connecting portion that electrically connects the second power conversion unit side connecting member and the power conversion unit,
when viewed from the rotation axis direction,
the first rotating electric machine side connecting member and the second rotating electric machine side connecting member are arranged at different positions in a tangential direction of the first rotating electric machine, and
the rotation axis of the first rotating electric machine is located between the first rotating electric machine side connecting member and the second rotating electric machine side connecting member in the tangential direction, and

in the first rotating electric machine, in a direction orthogonal to an imaginary line which connects a bottom portion of the first rotating electric machine side connecting member located inside the rotating electric machine accommodation portion and a bottom portion of the second rotating electric machine side connecting member located inside the rotating electric machine accommodation portion, an outermost diameter portion is arranged in the rotating electric machine accommodation portion so as to be located outside the imaginary line.

6. A rotating electric machine drive unit comprising:
a rotating electric machine;
a rotating electric machine housing accommodating the rotating electric machine;
a power control unit having a power conversion unit that controls the rotating electric machine; and
a connecting member which electrically connects the rotating electric machine and the power conversion unit of the power control unit, wherein
when viewed from a rotation axis direction of the rotating electric machine, the power control unit is disposed on the outer peripheral surface of the rotating electric machine housing, and wherein
a part of the power control unit is disposed so as to overlap with at least one of the rotating electric machine housing and the rotating electric machine in a radial direction of the rotating electric machine when viewed from the rotation axis direction of the rotating electric machine.

Assignees

• Honda Motor Co Ltd

Inventors

• Wakabayashi Ryuta

Classifications

• B60K6/405

  Housings · CPC title

• B60K1/02

  comprising more than one electric motor · CPC title

• Y02T10/7072

  Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors · CPC title

• H02P5/74 Primary

  controlling two or more AC dynamo-electric motors (H02P5/46, H02P5/60 take precedence) · CPC title

• B60K6/40 Primary

  characterised by the assembly or relative disposition of components · CPC title