(19)
(11) EP 2 582 010 A8

(12) CORRECTED EUROPEAN PATENT APPLICATION
published in accordance with Art. 153(4) EPC

(15) Correction information:
Corrected version no 1 (W1 A1)

(48) Corrigendum issued on:
07.08.2013 Bulletin 2013/32

(43) Date of publication:
17.04.2013 Bulletin 2013/16

(21) Application number: 10852874.6

(22) Date of filing: 09.06.2010
(51) International Patent Classification (IPC): 
H02J 7/02(2006.01)
H01M 10/44(2006.01)
 B60L 3/00(2006.01)
(86) International application number:
PCT/JP2010/059759
(87) International publication number:
WO 2011/155034 (15.12.2011 Gazette 2011/50)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

(71) Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Toyota-shi, Aichi-ken, 471-8571 (JP)

(72) Inventor:
  • OCHIAI, Kiyoe
    Toyota-shi, Aichi-ken, 471-8571 (JP)

(74) Representative: Kopp, Stephan 
Kuhnen & Wacker Patent- und Rechtsanwaltsbüro Prinz-Ludwig-Strasse 40A
85354 Freising
85354 Freising (DE)

   


(54) VEHICLE BATTERY-PACK EQUALIZATION SYSTEM AND VEHICLE BATTERY-PACK EQUALIZATION METHOD


(57) Provided is a vehicle battery-pack equalizationsystem(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.