US 11,114,912 B2Granted

Rotating electric machine

AssigneesDenso Corporation, Toyota Jidosha Kabushiki Kaisha

InventorsMasahito Fujieda, Yuichiro Ito, Shingo Nagai

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Abstract

A rotating electric machine includes a stator and a rotor. The stator includes a stator core and a stator winding that includes phase coils wound around slots of the stator core. Each phase coil is configured such that: a first end is connected to an external terminal; a second end is connected to a neutral point; and 2n (n being a natural number) circling coils are arranged to circle the stator core and connected in series. A neutral-point-side coil is housed in a first slot where a terminal-side coil is housed. The terminal-side coil is a circling coil that is arranged on the external-terminal side of a first phase coil among the phase coils. The neutral-point-side coil is a circling coil that is arranged on the neutral-point side of a second phase coil among the phase coils. The second phase coil is different in phase from the first phase coil.

Claims10

Dependent claims

A rotating electric machine comprising:

a stator that includes a stator core that has a circular cylindrical shape and is provided with a plurality of slots that are arranged in a circumferential direction, and a stator winding that comprises a plurality of phase coils that are wound around the slots;
and
a rotor that is arranged so as to oppose the stator in a radial direction and has a plurality of magnetic poles in the circumferential direction, wherein
each phase coil is configured such that a first end is connected to an external terminal, a second end is connected to a neutral point, and 2n (n being a natural number) circling coils are arranged so as to circle the stator core and connected in series, and
a neutral-point-side coil is housed in a first slot in which a terminal-side coil is housed, wherein:
the terminal-side coil is a circling coil that is arranged on the external-terminal side of a first phase coil among the phase coils;
the neutral-point-side coil is a circling coil that is arranged on the neutral-point side of a second phase coil among the phase coils;
and the second phase coil is different in phase from the first phase coil.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/574,420Filed 18 Sep 2019
Priority: JP JP2018-17949925 Sep 2018
Published: US 2020/0099267 A126 Mar 2020
Granted: 7 Sep 2021
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

H02K 3/28
Windings characterised by the conductor shape, form or construction, e.g. with bar conductors: layout of windings or of connections between windings
H02K 1/16
Stationary parts of the magnetic circuit: stator cores with slots for windings
H02K 1/276
The rotor consisting of magnets or groups of magnets arranged with alternating polarity: magnets embedded in the magnetic core, e.g. interior…
H02K 3/12
Windings characterised by the conductor shape, form or construction, e.g. with bar conductors: arranged in slots

Family

US 2020/0099267 A1Pre-grant publication · published 26 Mar 2020
US 11,114,912 B2This patent

From the US filing history. Foreign family members aren’t listed.

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