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Title:
BATTERY CONTROL DEVICE AND CHARGE/DISCHARGE CONTROL METHOD FOR BATTERY
Document Type and Number:
Japanese Patent JP2009078807
Kind Code:
A
Abstract:

To achieve efficient and accurate warming-up, while improving the fuel consumption, when charging a battery, using regenerative power.

When an ignition switch is turned on, an HVECU reads a battery temperature; and when the battery temperature becomes lower than a set temperature, the HVECU performs warming-up control (steps 100, 102). The warming-up control includes: setting the target capacity of the battery to a target SOCL which is lower than a normal target SOC; reading the capacity C of the battery, when the engine is started; and performing the forced discharging of the battery, when the capacity C is larger than the target SOCL(steps 106 to 118). In this case, while charging with the driving force of the engine is inhibited, the charging of a regenerative power is performed. A battery temperature is increased by heating according to the charging/discharging of the battery so that it is possible to quickly and surely perform warming-up of the battery, while the specific fuel consumption of the engine is improved.


Inventors:
JINNO KUNIHIKO
Application Number:
JP2008287386A
Publication Date:
April 16, 2009
Filing Date:
November 10, 2008
Export Citation:
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Assignee:
TOYOTA MOTOR CORP
International Classes:
B60K6/445; B60W10/26; B60K6/52; B60K6/543; B60K6/547; B60L50/16; B60W10/06; B60W10/08; B60W10/18; B60W20/00; F02D29/02; H02J7/00
Domestic Patent References:
JP2008049877A2008-03-06
JP2004260905A2004-09-16
JP2005332777A2005-12-02
JP2006174596A2006-06-29
Attorney, Agent or Firm:
Atsushi Nakajima
Kato Kazunori
Katsuichi Nishimoto
Hiroshi Fukuda