Patent EP1102383A2 successfully refreshed from Google Patents.
EP1102383A2
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Motor/Generator
Assignee: Nissan Motor Co Ltd
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Filing: 2000-11-15
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Granted: —
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Expires: 2020-11-15
Abstract
Abstract A rotor (2) of a motor is fixed to a rotation shaft (9) and a stator (5) is disposed on the outer side. The stator (5) is provided with a plurality of slots (6) opening towards an outer periphery of the rotor (2). The openings of each slot (6) facing the outer periphery of the rotor (2) is closed by a cover (14). A first cooling liquid chamber (12) is formed facing the opening of the slots (6) on one end face of the stator (5). A second cooling liquid chamber (13) is formed facing the opening of the slots (6) on another end face of the stator (5). A supply port (16) of cooling liquid is provided in the first cooling chamber (12) and cooling liquid supplied from the supply port (17) to the first cooling liquid chamber (12) flows into the second cooling liquid chamber (13) through the slots (6). Coils (8) disposed on each slot (6) are efficiently and evenly cooled by the provision of members (21A, 21B, 22) that evenly distribute cooling liquid supplied from the supply port (17) to the respective slots (16).
Inventors
- 👤 Toshio Kikuchi
- 👤 Shinichiro Kitada
- 👤 Yutaro Kaneko
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 17:23
CPC Classifications
H; H02; H02K; H02K1/00; H02K1/06; H02K1/12; H02K1/20; H02K9/00; H02K9/19; H02K9/197
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
201 words
A motor/generator (1) comprising: a rotation shaft (9); a rotor (2) fixed to the rotation shaft (9) and provided with a magnet (4); a cylindrical stator (5) having both end faces orthogonally disposed with
respect to the rotation shaft (9), the stator (5) having a plurality of slots (6),
and coils (8) disposed on an inner side of the slots (6), each slot (6) having a
first opening facing an outer periphery of the rotor (2), a second opening
formed on one end face of the stator (5) and a third opening formed on the
other end face of the stator (5); covers (14) closing the first openings of the slots (6); a first cooling liquid chamber (12) facing the second openings of the slots
(16); the first cooling liquid chamber (12) having a supply port of cooling
liquid and an equalizing member (21A, 21B, 22) equalizing a distribution of
cooling liquid from the supply port (16) to each slot (6); and a second cooling liquid chamber (13) facing the third openings of the
slots (6), the slots (6) functioning to form a flow of cooling liquid between the
first liquid cooling chamber (12) and the second liquid cooling chamber (13).
Claim 2
Dependent Claim
32 words
The motor/generator as defined in Claim 1, wherein the equalizing member
(21A, 21B, 22) comprises a partition (21A, 21B) partially limiting a flow of
cooling liquid in the first cooling chamber (12).
Claim 3
Dependent Claim
79 words
The motor/generator *as defined in Claim 2, wherein the first cooling
chamber (12) comprises an upper part and a lower part, the partition (21A,
21B) comprises an upper partition (21A) partitioning the upper part and a
lower partition (21B) partitioning the lower part, a cross sectional area of
cooling liquid flow which passes through the lower partition (21) being set to
be smaller than a cross sectional area of cooling liquid flow which passes
through the upper partition (21A).
Claim 4
Dependent Claim
54 words
The motor/generator as defined in Claim 1, wherein the first cooling liquid
chamber (12) is formed to a ring shape, the equalizing member (21A, 21B, 22)
comprises a volume regulation member (22) which extends in a peripheral
direction in the first cooling liquid chamber (12) and a cross sectional area in
the peripheral direction.
Claim 5
Dependent Claim
48 words
The motor/generator as defined in Claim 4, wherein the first cooling chamber
(12) comprises an upper part and a lower part, the volume regulation member
(22) is formed in a shape with which a volume of the lower part is smaller
than a volume of the upper part.
Claim 6
Dependent Claim
33 words
The motor/generator as defined in Claim 5, wherein a lead line (U,V,W)
supplying a current to the coils (8) is arranged to pass through the upper part
of the first cooling chamber (12).
Claim 7
Dependent Claim
242 words
A motor/generator (1) comprising: a rotation shaft (9); a rotor (2) fixed to the rotation shaft (9) and provided with a magnet (4); a cylindrical stator (5) having both end faces orthogonally disposed with
respect to the rotation shaft (9), the stator (5) having a plurality of slots (6),
and coils (8) disposed on an inner side of the slots (6), each slot (6) having a
first opening facing an outer periphery of the rotor (2), a second opening
formed on one end face of the stator (5) and a third opening formed on the
other end face of the stator (5); covers (14) closing the first openings of the stator (5); a first cooling liquid chamber (12) facing the second openings of the slots (6),
the first cooling chamber (12) comprising a first partition (24) which allows an
intercommunication among slots (6) of a first group while preventing the slots
(6) of the first group from communicating with slots (6) of a second group; a second cooling liquid chamber (13) facing the second openings of the slots
(6), the second cooling chamber (13) comprising a second partition (26) which
allows intercommunication among slots (6) of a third group while preventing
the slots (6) of the third group from communicating with slots (6) that does
not belong to the third group, the third group comprising one of the slots (6)
of the first group and the slots (6) of the second group.
Claim 8
Dependent Claim
50 words
The motor/generator as defined in Claim 7, wherein the first cooling liquid
chamber (12) comprises a cooling liquid supply port (16) which introduces
cooling liquid into the first cooling liquid chamber (12) and a cooling liquid
discharge port (17) which discharges cooling liquid from the first cooling liquid
chamber (12).
Claim 9
Dependent Claim
74 words
The motor/generator as defined in Claim 7, wherein the stator (5) comprises,
in each of the slots (6), a boundary plate (23) which extends in a direction of
the rotation shaft (9) and separates the slot (6), the first partition (24) is
formed as a part of a specific boundary plate (23) and the second partition (26)
is formed as a part of a boundary plate (23) other than the specific boundary
plate (23).
Claim 10
Dependent Claim
30 words
The motor/generator as defined in Claim 7, wherein all the slots (6) are
connected in series through the first cooling liquid chamber (12) and the
second cooling liquid chamber (13).
References Cited (Backward Citations)
No citation records indexed.
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