公开(公告)号：US20170126043A1

公开(公告)日：2017-05-04

申请号：US15129200

申请日：2015-03-26

申请人： NEC Corporation ,  NEC Engineering, Ltd.

发明人： Hiroshi YOSHIDA ,  Shuuhei HAYASHI ,  Motoharu NAGASE

IPC分类号： H02J7/00

CPC分类号： H02J7/0063 ,  H01M10/441 ,  H02J7/0014 ,  H02J2007/0067

摘要： The present invention achieves a balanced discharging in a power storage system having a plurality of storage batteries connected in parallel. A power storage system comprises a plurality of storage batteries 100a-100f connected in parallel, a storage battery device 120 at least setting an output voltage value at discharge to each of the plurality of storage batteries 100a-100f. The storage battery device 120 includes a discharge control circuit 121 configured to assign at least one storage battery of the plurality of storage batteries for a master based on at least a battery residual capacity or a battery voltage and set the output voltage value so that the output voltage value differs between the master and the storage battery.