Electric vehicle

Patent metadata

Field	Value
Publication number	US-12257905-B2
Application number	US-202218062730-A
Country	US
Kind code	B2
Filing date	Dec 7, 2022
Priority date	Dec 22, 2021
Publication date	Mar 25, 2025
Grant date	Mar 25, 2025

Abstract

To arrange a power unit, an electric power conversion unit, and engine-related components compactly, a drive motor, a reduction drive, a generator, and an engine body are integrally arranged in this order in a vehicle width direction of a power unit compartment such that respective heights thereof are substantially the same. An electric power conversion unit, in which a motor inverter, an electric power generation inverter, and a DC/DC converter are integrated, is arranged above the drive motor, the reduction drive, and the generator. Engine-related components such as a low-voltage battery, an air cleaner, and an oil filter are arranged above the engine body.

First claim

The invention claimed is:

1. An electric vehicle including:
A drive motor that drives the vehicle by using electric power;
a reduction drive that reduces power from the drive motor and outputs the reduced power;
a generator that generates the electric power to be supplied to the drive motor; and
an engine body that drives the generator and is configured to transmit output of the reduction drive to a drive wheel, wherein
the drive motor, the reduction drive, the generator, and the engine body are integrally arranged in this order in a vehicle width direction of a power unit compartment such that respective heights thereof are substantially the same,
an electric power conversion unit, in which a motor inverter, an electric power generation inverter, and a DC/DC converter are integrated, is arranged above the drive motor, the reduction drive, and the generator, and
engine-related components are arranged above the engine body.

2. The electric vehicle according to claim 1 , wherein
the engine body is a rotary engine.

3. The electric vehicle according to claim 2 , wherein
a rotary shaft of the engine body, a generator shaft of the generator, and a motor shaft of the drive motor extend in the vehicle width direction and are arranged on the same straight line.

4. The electric vehicle according to claim 3 , wherein
the engine body is a forward-intake type and a forward-exhaust type, and
the engine-related components include:
intake-related components that are arranged in front of the engine body;
fuel and oil-related components that are arranged directly above the engine body; and
a battery that is arranged behind the engine body.

5. The electric vehicle according to claim 4 , wherein
the engine-related components are arranged to be projected outward from the engine body in the vehicle width direction, and
exhaust-related components run through a lateral side of the engine body and below the engine-related components, and are routed behind the engine body.

Assignees

• Mazda Motor

Inventors

• Ohno Osami
• Maruyama Satoshi
• Tanaka Hiroshi
• Yonemori Kei
• Furukawa Akihiro
• Huang Li-Hsuan
• Chen Chih-Yuan
• Jang Iou-Uei

Classifications

• Y02T10/62

  Hybrid vehicles · CPC title

• B60K1/00

  Arrangement or mounting of electrical propulsion units (B60K7/00 takes precedence; arrangement or mounting of plural diverse prime-movers for mutual or common propulsion B60K6/00) · CPC title

• B60K2001/0405

  characterised by their position · CPC title

• B60L50/10

  using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines · CPC title

• B60L50/66

  Arrangements of batteries · CPC title