HYBRID VEHICLE

• US 20120041629A1
• Filed: 03/31/2010
• Published: 02/16/2012
• Est. Priority Date: 03/31/2009
• Status: Active Grant

• Current Assignee: Aisin AW Company Limited (Aisin Corp.), DENSO Corporation
• Original Assignee: Aisin AW Company Limited (Aisin Corp.), DENSO Corporation
• Inventors: Yamada, Kazunao, Naito, Takashi, Niwa, Toshiaki, Takahara, Masatoshi, Ogawa, Fumiharu, Suganuma, Hideaki, Kuraishi, Mamoru
• Granted Patent: US 8,725,332 B2
• Time in Patent Office: Days
• US Class Current: 701/22
• CPC Class Codes: B60K 6/48 Parallel type
• CPC Class Codes: B60K 6/543 the transmission being a continuously variable transmission
• CPC Class Codes: B60L 2240/36 Temperature of vehicle components or parts
• CPC Class Codes: B60L 2240/545 Temperature
• CPC Class Codes: B60L 3/0046 relating to electric energy storage systems, e.g. batteries or capacitors
• CPC Class Codes: B60L 50/16 with provision for separate direct mechanical propulsion
• CPC Class Codes: B60L 50/61 by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
• CPC Class Codes: B60L 58/12 responding to state of charge [SoC]
• CPC Class Codes: B60L 58/24 for controlling the temperature of batteries
• CPC Class Codes: B60L 7/14 for vehicles propelled by ac motors
• CPC Class Codes: B60W 20/11 using model predictive control [MPC] strategies, i.e. control methods based on models predicting performance utilising navigation and traffic information in the control strategy B60W20/12
• CPC Class Codes: B60W 2510/244 Charge state
• CPC Class Codes: B60W 2510/246 Temperature
• CPC Class Codes: B60W 2552/20 Road profile, i.e. the change in elevation or curvature of a plurality of continuous road segments
• CPC Class Codes: B60W 2710/244 Charge state
• CPC Class Codes: B60W 2710/246 Temperature
• CPC Class Codes: B60W 30/18127 Regenerative braking
• CPC Class Codes: B60W 50/0097 Predicting future conditions
• 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

Abstract

A hybrid vehicle includes a regenerative charging area detection section, a recovery loss estimation section, and a motor use ratio increase section. The regenerative charging area detection section detects arrival of a regenerative charging possible area in which a regenerative charging from a motor to a battery is possible. The recovery loss estimation section estimates a recovery loss of the regenerative charging based on a regenerative charge amount in the regenerative charging possible area and a current remaining battery amount in response to detection by the regenerative charging area detection section. In response to estimation by the recovery loss estimation section, before the arrival at the regenerative charging possible area, the motor use ratio increase section increases a use ratio of the motor so as to decrease a remaining battery amount while limiting the temperature of the battery to a predetermined temperature range.

Claims

1. A hybrid vehicle comprising:

a battery temperature estimation section that estimates a temperature of a battery in accordance with a road condition to a destination; and

a control section that sets use ratios of a motor and an engine in accordance with the temperature of the battery.

2. The hybrid vehicle according to claim 1, further comprising:

a regenerative charging area detection section that detects arrival of a regenerative charging possible area in which a regenerative changing from the motor to the battery is possible;

a recovery loss estimation section that estimates a recovery loss of the regenerative charging based on a regenerative charging amount in the regenerative charging possible area and a current remaining battery amount in response to detection by the regenerative charging area detection section; and

a motor use ratio increase section that increases the use ratio of the motor so as to decrease a remaining battery amount before the arrival at the regenerative charging possible area in response to estimation by the recovery loss estimation section,

wherein the motor ratio increase section increases the use ratio of the motor while limiting the temperature of the battery to a predetermined temperature range.

3. The hybrid vehicle according to claim 2,

wherein when a motor running inappropriate area which is not appropriate to a running with the motor is located before the regenerative charging possible area, the motor ratio increase section increases the use ratio of the motor before arrival at the motor running inappropriate area.

4. A hybrid vehicle comprising:

a regenerative charging area detection section that detects arrival of a regenerative charging possible area in which a regenerative changing from the motor to the battery is possible;

a recovery loss estimation section that estimates a recovery loss of the regenerative charging based on a regenerative charging amount in the regenerative charging possible area and a current remaining battery amount in response to detection by the regenerative charging area detection section; and

a motor use ratio increase section that increases a use ratio of the motor so as to decrease a remaining battery amount before the arrival at the regenerative charging possible area in response to estimation by the recovery loss estimation section,

wherein the motor ratio increase section increases the use ratio of the motor while limiting a temperature of the battery to a predetermined temperature range.

5. The hybrid vehicle according to claim 4,

wherein when a motor running inappropriate area which is not appropriate to a running with the motor is located before the regenerative charging possible area, the motor ratio increase section increases the use ratio of the motor before arrival at the motor running inappropriate area.