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Patent Searching and Data


Title:
STEP-UP/DOWN DEVICE FOR POWER STORAGE DEVICE AND POWER STORAGE DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/054138
Kind Code:
A1
Abstract:
This power storage device 12 is provided with a charge/discharge control unit 15 that: starts a step-up operation by charging a smoothing capacitor 27 with a limited current and then supplying a non-limited current to a step-up/down circuit 18 when the step-up operation is started from a state in which the smoothing capacitor 27 is not charged; charges the smoothing capacitor 27 with the limited current and then charges the smoothing capacitor with a step-up voltage obtained by the step-up operation when a second direct current voltage is being supplied to a second terminal; and closes a switch circuit 29 after the potential difference between a charge voltage of the smoothing capacitor and the second direct current voltage is reduced.

Inventors:
TAGAWA SHUICHI (JP)
Application Number:
PCT/JP2018/030823
Publication Date:
March 21, 2019
Filing Date:
August 21, 2018
Export Citation:
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Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H02J1/00; H02J7/00; H02M3/155
Domestic Patent References:
WO2016157962A12016-10-06
Foreign References:
JP2011010508A2011-01-13
JP2006246610A2006-09-14
Attorney, Agent or Firm:
FUKUI, Hiroshi (JP)
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