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Title:
直流電源装置及び電力貯蔵システム
Document Type and Number:
Japanese Patent JP5659649
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a DC power supply and a power storage system using the DC power supply, capable of utilizing more effectively a plurality of batteries having variation in performance.SOLUTION: The DC power supply includes a first connection device 3 in which a battery selected from among a plurality of batteries (typically secondary battery) and a DC/DC conversion circuit 2 are connected mutually. The DC/DC conversion circuit 2 includes a plurality of capacitors C1 to C4 and a second connection device 20. In the second connection device 20, capacitors can be connected together in parallel or in series, and following steps are repeated: a step in which the capacitors charged by the battery in parallel connection are switched to serial connection to be discharged and output to the outside; and a step in which the capacitors charged by an external voltage in serial connection are switched to parallel connection to be discharged and output for charging a battery.

Inventors:
弘津 研一
綾井 直樹
柴田 俊和
Application Number:
JP2010207094A
Publication Date:
January 28, 2015
Filing Date:
September 15, 2010
Export Citation:
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Assignee:
住友電気工業株式会社
International Classes:
H02J7/00; H02J1/00; H02J15/00; H02M3/07
Attorney, Agent or Firm:
Patent business corporation Sun Crest international patent firm