US 8,008,876 B2Granted

Hybrid electric vehicle

AssigneeMazda Motor Corporation

InventorsKei Yonemori, Nobuhide Seo, Kohei Saito, Hirofumi Akagi, Hideaki Fujita

Life of this patent

Estimating the term…

Loading patent…

Abstract

A hybrid electric vehicle includes, in one example, a motor-generator driven by an engine to generate alternating current, wherein the motor-generator is further configured to start the engine, a motor for driving the vehicle, a diode rectifier to rectify alternating current generated by the motor-generator, an inverter connected to a feed circuit between the diode rectifier and the motor to convert direct current in the feed circuit into alternating current, a power supply connected to a line connecting the diode rectifier with the inverter, a first feed circuit to supply current to the motor to drive the vehicle through the diode rectifier and the inverter in series a second feed circuit to connect the motor-generator with the power supply while bypassing at least the diode rectifier, and an alternating current converter provided in the second feed circuit.

Claims12

Dependent claims

A hybrid electric vehicle comprising:

a motor-generator driven by an engine to generate alternating current,
wherein the motor-generator is further configured to start the engine;
a motor for driving the vehicle;
a diode rectifier to rectify alternating current generated by the motor-generator;
an inverter connected to a feed circuit between the diode rectifier and the motor to convert direct current in the feed circuit into alternating current;
a power supply connected to a line connecting the diode rectifier with the inverter;
a first feed circuit to supply current to the motor to drive the vehicle through the diode rectifier and the inverter in series;
a second feed circuit to connect the motor-generator with the power supply while bypassing at least the diode rectifier;
an alternating current converter provided in the second feed circuit, wherein the alternating current converter includes a second inverter placed in parallel with the first feed circuit;
and
a switch device to selectively switch between a motor power feed mode where the power supply is connected to the motor via the second inverter and a starter power feed mode where the power supply is connected to the motor-generator via the second inverter.

8 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/144,580Filed 23 Jun 2008
Priority: JP 2007-16596625 Jun 2007
Published: US 2008/0315803 A125 Dec 2008
Granted: 30 Aug 2011
Term ends: Not estimatedThe source records don’t support an estimate.

Classification23 codes

B60L 15/007
Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles: physical arrangements or structures of…
B60L 50/61
Using power supplied by batteries: by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
B60K 2006/268
Characterised by the motors or the generators: electric drive motor starts the engine, i.e. used as starter motor
B60L 2210/14
DC to DC converters: boost converters