US 12,456,872 B2
Power storage apparatus and power system stabilization system
Yoshiyuki Kono, Tokyo (JP); Shuhei Fujiwara, Tokyo (JP); Kazuyori Tahata, Tokyo (JP); Frederick Page, Tokyo (JP); Shinji Tominaga, Tokyo (JP); and Masatoshi Takeda, Tokyo (JP)
Assigned to Mitsubishi Electric Corporation, Tokyo (JP)
Appl. No. 18/251,613
Filed by Mitsubishi Electric Corporation, Tokyo (JP)
PCT Filed Nov. 11, 2020, PCT No. PCT/JP2020/042122
§ 371(c)(1), (2) Date May 3, 2023,
PCT Pub. No. WO2022/102025, PCT Pub. Date May 19, 2022.
Prior Publication US 2024/0014669 A1, Jan. 11, 2024
Int. Cl. H02J 7/06 (2006.01); H02J 7/00 (2006.01); H02J 7/34 (2006.01)
CPC H02J 7/0024 (2013.01) [H02J 7/0016 (2013.01); H02J 7/06 (2013.01); H02J 7/345 (2013.01); H02J 7/0048 (2020.01); H02J 2207/50 (2020.01)] 11 Claims
OG exemplary drawing
 
1. A power storage apparatus comprising:
a positive electrode terminal on a high potential side;
a negative electrode terminal on a low potential side;
a storage bank including a plurality of power storage elements connected to each other; and
a plurality of first cells, wherein
the storage bank and the plurality of first cells are connected in series between the positive electrode terminal and the negative electrode terminal,
each of the plurality of first cells includes:
a pair of input/output nodes;
a bridge circuit including at least two semiconductor switching elements; and
a power storage element connected to the pair of input/output nodes via the bridge circuit,
a storage capacity of the power storage element of each of the plurality of first cells is smaller than a storage capacity of the storage bank, and
storage capacities of the plurality of first cells are different from each other.