HYBRID VEHICLE

• US 20200130695A1
• Filed: 10/23/2019
• Published: 04/30/2020
• Est. Priority Date: 10/24/2018
• Status: Abandoned Application

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: ANDO, Yuya, SUZUKI, Takeaki, IWASAKI, Shinsuke, SUGITA, Miki
• Application Number:
  US16/660,997
• Publication Number:
  US 20200130695A1
• Time in Patent Office: Days
• CPC Class Codes: B60K 2006/268 Electric drive motor starts the engine, i.e. used as starter motor
• CPC Class Codes: B60K 6/26 characterised by the motors or the generators
• CPC Class Codes: B60K 6/28 characterised by the electric energy storing means, e.g. batteries or capacitors
• CPC Class Codes: B60K 6/485 Motor-assist type
• CPC Class Codes: B60R 16/033 characterised by the use of electrical cells or batteries for propulsion puposes B60K1/04; supplying batteries to, or removing batteries from, vehicles B60S5/06; testing of charge state G01R31/36
• CPC Class Codes: B60W 10/06 including control of combustion engines
• CPC Class Codes: B60W 10/08 including control of electric propulsion units, e.g. motors or generators
• CPC Class Codes: B60W 20/00 Control systems specially adapted for hybrid vehicles hybrid vehicle design, B60K6/00; electric vehicles B60L
• CPC Class Codes: B60W 20/15 Control strategies specially adapted for achieving a particular effect
• CPC Class Codes: B60W 2510/0638 Engine speed
• CPC Class Codes: B60W 30/192 Mitigating problems related to power-up or power-down of the driveline, e.g. start-up of a cold engine
• CPC Class Codes: B60Y 2200/92 Hybrid vehicles
• CPC Class Codes: B60Y 2300/192 Power-up or power-down of the driveline, e.g. start up of a cold engine
• CPC Class Codes: F02N 11/006 using a plurality of electric motors
• CPC Class Codes: F02N 11/04 the motors being associated with current generators
• CPC Class Codes: F02N 11/0848 with means for detecting successful engine start, e.g. to stop starter actuation
• CPC Class Codes: F02N 11/0862 characterised by the electrical power supply means, e.g. battery
• CPC Class Codes: F02N 11/0866 comprising several power sources, e.g. battery and capacitor or two batteries
• CPC Class Codes: F02N 2011/0888 DC/DC converters
• CPC Class Codes: F02N 2200/022 Engine speed
• CPC Class Codes: F02N 2200/023 : Engine temperature
• CPC Class Codes: Y02T 10/62 : Hybrid vehicles
• CPC Class Codes: Y02T 10/70 : Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 : Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 90/14 : Plug-in electric vehicles

Abstract

At a cold start of an engine, a hybrid vehicle is configured to perform first cranking control that controls a starter and an electric power transmission device, such that the engine is cranked by the starter using electric power from a first power storage device and a second power storage device, or to perform second cranking control that controls a motor generator and the electric power transmission device, such that the engine is cranked by the motor generator using the electric power from the first power storage device and the second power storage device.

Claims

1. A hybrid vehicle, comprising:

an engine;

a starter configured to crank the engine;

a motor generator connected with the engine;

a first power storage device connected with the starter via a first power line;

a second power storage device connected with the motor generator via a second power line;

an electric power transmission device configured to transmit electric power between the first power line and the second power line and to cancel the transmission; and

a control device configured to control the engine, the starter and the motor generator, wherein

at a cold start of the engine,

the control device performs first cranking control that controls the starter and the electric power transmission device, such that the engine is cranked by the starter using electric power from the first power storage device and the second power storage device, or

the control device performs second cranking control that controls the motor generator and the electric power transmission device, such that the engine is cranked by the motor generator using the electric power from the first power storage device and the second power storage device.

2. The hybrid vehicle according to claim 1,

wherein the starter is a DC series-wound type,

the motor generator is a DC shunt-wound type, and

the control device performs the first cranking control at the cold start of the engine.

3. The hybrid vehicle according to claim 2,

wherein the control device changes over control from the first cranking control to the second cranking control, when a rotation speed of the engine does not reach a start completion rotation speed by the first cranking control at the cold start of the engine.