Title:
VEHICLE BATTERY-PACK EQUALIZATION SYSTEM AND VEHICLE BATTERY-PACK EQUALIZATION METHOD
Document Type and Number:
WIPO Patent Application WO/2011/155034
Kind Code:
A1
Abstract:
Provided is a vehicle battery-pack equalization system (100), wherein, in a battery pack (10) to be mounted on a vehicle, and which is comprised of a plurality of unit cells (11) connected in series, each of the unit cells (11) are made to be discharged to equalize the voltages thereof, or the remaining capacities (SOC) thereof. The equalization processing time of each of the unit cells (11) is set to a period of time the result of multiplying the discharging time of the battery pack (10) starting from just before the equalization processing, and the ratio of the difference between the currents discharged by each of the unit cells (11) with respect to the equalization discharging current. In such a way, power consumption during equalization processing can be inhibited.
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Inventors:
OCHIAI, Kiyoe (1 Toyota-cho, Toyota-sh, Aichi 71, 〒4718571, JP)
Application Number:
JP2010/059759
Publication Date:
December 15, 2011
Filing Date:
June 09, 2010
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA (1 Toyota-cho, Toyota-shi Aichi, 71, 〒4718571, JP)
トヨタ自動車株式会社 (〒71 愛知県豊田市トヨタ町１番地 Aichi, 〒4718571, JP)
トヨタ自動車株式会社 (〒71 愛知県豊田市トヨタ町１番地 Aichi, 〒4718571, JP)
International Classes:
H02J7/02; B60L3/00; H01M10/44
Attorney, Agent or Firm:
YOSHIDA, Kenji et al. (34-12, Kichijoji-honcho 1-chome Musashino-sh, Tokyo 04, 〒1800004, JP)
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Claims: