POWER STORAGE DEVICE, CHARGING METHOD AND DISCHARGING METHOD

• Main Authors: UDONO NAOTADA, HIROTSU KENICHI, NAKAHATA HIDEAKI
• Format: Patent
• Language: English; Japanese
• Published: 16.02.2015
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

PROBLEM TO BE SOLVED: To provide a power storage device capable of promptly equalizing voltages of a plurality of batteries by improving charging efficiency and a discharging capability while suppressing an energy loss, a charging method and a discharging method.SOLUTION: A power storage device 100 comprises: a first switch circuit part 3 capable of selectively forming a circuit for connecting one of a plurality of unit batteries B1-B4 to first capacitors C1-C3 in parallel and a circuit for connecting the first capacitors C1-C3 to the other unit batteries in parallel; a second switch circuit part 4 capable of selectively forming a circuit for connecting one of a plurality of battery groups to a second capacitor Cg in parallel and a circuit for connecting the second capacitor Cg to the other battery groups in parallel; and a control part 5 for operating the first switch circuit part 3 and the second switch circuit part 4 so as to successively switch the circuits to be formed. 【課題】エネルギーの損失を抑制し、充電効率及び放電能力を向上させ、複数の電池の電圧の、迅速な均等化が可能な蓄電装置、充電方法及び放電方法を提供する。【解決手段】蓄電装置１００は、複数の単位電池Ｂ１〜Ｂ４のうち、一の単位電池を第１キャパシタＣ１〜Ｃ３に並列接続する回路、及び、当該第１キャパシタＣ１〜Ｃ３を他の単位電池に並列接続する回路を、選択的に構成可能な第１スイッチ回路部３と、複数の電池グループのうち、一の電池グループを第２キャパシタＣｇに並列接続する回路、及び、当該第２キャパシタＣｇを他の電池グループに並列接続する回路を、選択的に構成可能な第２スイッチ回路部４と、第１スイッチ回路部３及び第２スイッチ回路部４について、構成する回路を逐次切り替えるようにそれぞれ動作させる制御部５と、を備えている。【選択図】図１