Title:
STORAGE BATTERY SYSTEM AND STORAGE BATTERY CONTROL METHOD
Document Type and Number:
Japanese Patent JP2017189045
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To improve a performance in a whole power storage system and extend a storage battery life after eliminating restrictions on characteristics of a plurality of storage batteries.SOLUTION: A storage battery system comprises: a plurality of storage batteries 106A and 106B to which invertors 104A and 104B are individually connected and which can be individually charged and discharged; and a storage battery monitoring control device 103 that monitors a charging amount of the plurality of storage batteries and individually applies a charging command or a discharging command to the plurality of storage batteries. The storage battery monitoring control device 103 sets a first threshold value and a second threshold value, which is a charging amount smaller than the first threshold value, between an upper limit charging amount and a lower limit charging amount determined by a charging capacity of the storage battery as the charging amount of each storage battery. The storage battery monitoring control device 103 performs load distribution control in which the charge or discharge in the plurality of storage batteries are combined so that a charging amount between the first and second thresholds is preferentially set for each storage battery.SELECTED DRAWING: Figure 1
Inventors:
MYOGADANI YUKI
KONNO HIROMITSU
KONNO HIROMITSU
Application Number:
JP2016077011A
Publication Date:
October 12, 2017
Filing Date:
April 07, 2016
Export Citation:
Assignee:
HITACHI LTD
International Classes:
H02J7/34; H01M10/44; H01M10/48; H02J3/32; H02J7/00; H02J13/00
Domestic Patent References:
| JP2014233096A | 2014-12-11 | |||
| JP2010097760A | 2010-04-30 | |||
| JP2014030334A | 2014-02-13 |
Foreign References:
| WO2011016273A1 | 2011-02-10 |
Attorney, Agent or Firm:
Shinto International Patent Office