# US 11,121,602 B2 · Stator of rotary electric machine

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- Number: US 11,121,602 B2
- Document ID: US11121602B2
- Status: Granted
- Kind: B2
- Application number: 16/519,688
- Filed: 2019-07-23
- Published: 2020-01-30
- Granted: 2021-09-14
- Earliest claimed: 2018-07-24
- Assignees: Honda Motor Co., Ltd.
- Applicants: Honda Motor Co., Ltd.
- Inventors: Yoshiaki Seki; Misa Aneha; Hideyuki Yoshida; Takehiro Imamura
- Web page: https://patentgrep.com/patent/US11121602B2

## CPC

- H02K 5/225: {Terminal boxes or connection arrangements (specially adapted for submersible motors H02K5/132)}
- H02K 3/50: Fastening of winding heads, equalising connectors, or connections thereto
- H02K 3/522: {for generally annular cores with salient poles}
- H02K 15/095: by laying conductors around salient poles
- H02K 2203/09: Machines characterised by wiring elements other than wires, e.g. bus rings, for connecting the winding terminations
- H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53})

## Abstract

A stator of a rotary electric machine comprises a stator core, a coil; and a plurality of bus bars. When viewed from a rotational axis direction of the rotary electric machine, the first terminal parts of the plurality of bus bars are arranged next to one another substantially in an upper and lower direction on the outside of the stator core in the radial direction, and the second terminal parts of the plurality of bus bars are arranged next to one another substantially in a horizontal direction above the stator core, and a first terminal part arranged on an uppermost side among the first terminal parts of the plurality of bus bars is arranged to be positioned below an uppermost part of the stator core.

## Claims

### Claim 1

A stator of a rotary electric machine comprising:
a stator core;
a coil attached to the stator core; and
a plurality of bus bars which have first terminal parts which are provided in one end portions thereof and electrically connected to terminal parts of respective phases of the coil, and second terminal parts which are provided in the other end portions thereof and electrically connected to terminal parts of a power conversion device corresponding to respective phases of the coil, wherein
when viewed from a rotational axis direction of the rotary electric machine,
the first terminal parts of the plurality of bus bars are arranged next to one another substantially in an upper and lower direction on the outside of the stator core in the radial direction,
the second terminal parts of the plurality of bus bars are arranged next to one another substantially in a horizontal direction above the stator core, and
a first terminal part arranged on an uppermost side among the first terminal parts of the plurality of bus bars is arranged to be positioned below an uppermost part of the stator core.

### Claim 2 (depends on 1)

The stator of the rotary electric machine according to claim 1, wherein
a first terminal part arranged on a lowermost side among the first terminal parts of the plurality of bus bars is arranged to be positioned above the rotational axis.

### Claim 3 (depends on 1)

The stator of the rotary electric machine according to claim 1, wherein
at least a part of the first terminal parts of the plurality of bus bars is positioned on a more central side than an utmost end part of the stator core in the horizontal direction.

### Claim 4 (depends on 1)

The stator of the rotary electric machine according to claim 1, wherein
the bus bars have first extension parts, second extension parts, and third extension parts which extend in mutually perpendicular three directions.

### Claim 5 (depends on 4)

The stator of the rotary electric machine according to claim 4, wherein
the first extension parts extend in the rotational axis direction,
the second extension parts extend in an upper and lower direction when viewed from the rotational axis direction, and
the third extension parts extend in a horizontal direction when viewed from the rotational axis direction.

### Claim 6 (depends on 5)

The stator of the rotary electric machine according to claim 5, wherein
the third extension parts extend above the stator core in the horizontal direction when viewed from the rotational axis direction, and the third extension parts of the plurality of bus bars are arranged at the same height.

### Claim 7 (depends on 1)

The stator of the rotary electric machine according to claim 1, wherein the stator further comprising:
a cover member which collectively covers the plurality of bus bars.

### Claim 8 (depends on 7)

The stator of the rotary electric machine according to claim 7, wherein
the bus bars include bent parts,
the cover member includes a cover part which covers at least a periphery of the bent parts and a cover fixing part for attaching the cover part to a support member, and
the cover member is configured so as not to be in contact with the plurality of bus bars in a state where the cover fixing part is attached to the support member.

### Claim 9 (depends on 1)

The stator of the rotary electric machine according to claim 1, wherein
the rotary electric machine is mounted in a vehicle, and
when the rotary electric machine is mounted in the vehicle such that an axis direction of the rotational axis of the rotary electric machine is directed in the right and left direction of the vehicle, the first terminal parts are arranged closer to the center of the vehicle than the rotational axis of the rotary electric machine in a front and rear direction.