US 2024/0405645 A1Published application

Electric power unit

AssigneeNidec Corporation

InventorsHiroki AKAISHI, Kazuyuki YAMAMOTO, Daisuke OGASAWARA

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Abstract

An electric power unit accommodates an electric motor in a first portion of a housing, and an inverter in a second portion of the housing. An upper surface opening portion of the second portion is covered with an inverter cover having a flat plate shape. A first region, a second region, and a third region sandwiched between the first region and the second region are formed on an upper surface of the inverter cover. A first connection portion is arranged in the first region. Second connection portions are arranged in the second region. A plurality of ribs are arranged in parallel in the third region. The first rib having one longitudinal end portion connected to the first connection portion and the second rib connected to the second connection portions are arranged in a direction in which the first rib and the second rib are arranged in parallel.

Claims7

Dependent claims

An electric power unit

accommodating an electric motor in a motor accommodating portion formed in a housing, and accommodating an inverter in an inverter accommodating portion formed in an upper portion of the housing, and
having an upper surface opening portion of the inverter accommodating portion covered with an inverter cover having a flat plate shape,
wherein
a first region, a second region, and a third region sandwiched between the first region and the second region are formed on an upper surface of the inverter cover, and
a first connection portion is arranged in the first region, a second connection portion is arranged in the second region, a plurality of ribs are arranged in parallel in the third region, and a first rib having one longitudinal end portion connected to the first connection portion and a second rib connected to the second connection portion are arranged in a direction in which the first rib and the second rib are arranged in parallel.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/696,860Filed 10 Jun 2022
Priority: JP 2021-15953429 Sep 2021
Published: 5 Dec 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

H02K 11/30
Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection: structural…
H02K 11/33
Structural association with control circuits or drive circuits: drive circuits, e.g. power electronics
H02K 5/10
Casings or enclosures characterised by the shape, form or construction thereof: with arrangements for protection from ingress, e.g. water or fingers
H02K 9/19
Arrangements for cooling or ventilating: for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil