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Patent Searching and Data


Title:
BATTERY PACK
Document Type and Number:
WIPO Patent Application WO/2017/221569
Kind Code:
A1
Abstract:
In the present invention a defective battery module 2 is separated from other battery modules 2 by turning off a switch SW possessed by the defective battery module 2, and when a voltage difference Vd between the voltage of a battery B possessed by a battery module 2 that has returned from the defective state to a normal state and the voltage of the batteries B of the other battery modules 2 is equal to or less than a threshold value Vth, the switch SW possessed by the battery module 2 that has returned to the normal state is turned on, thereby reconnecting the battery module 2 that has returned to the normal state to the other battery modules 2. The threshold value Vth is set on the basis of the number of or the state of charge of the battery modules 2 having a switch SW that is on prior to the turning on of the switch SW possessed by the battery module 2 that has returned to the normal state.

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Inventors:
AIZAWA SHINICHI (JP)
TSUZUKU TAKAHIRO (JP)
MURAMATSU YUKI (JP)
Application Number:
PCT/JP2017/017620
Publication Date:
December 28, 2017
Filing Date:
May 10, 2017
Export Citation:
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Assignee:
TOYOTA JIDOSHOKKI KK (JP)
International Classes:
H02J7/00; H01M10/44; B60L11/18
Domestic Patent References:
WO2010018644A12010-02-18
WO2010103816A12010-09-16
Foreign References:
JP2009033936A2009-02-12
JP2010252566A2010-11-04
Attorney, Agent or Firm:
OSUGA, Yoshiyuki (JP)
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