Title:
DC CHARGING DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/203871
Kind Code:
A1
Abstract:
Provided is a DC current charging device capable of directly and efficiently charging a storage battery with DC current from, for example, a solar power generation device without requiring a converter. The DC charging device according to the present invention is characterized by comprising: a storage battery module in which a plurality of storage battery cells are connected in series or in parallel; a switch that connects a plurality of the storage battery modules in series and is provided between the storage battery modules connected in series; two or more sets of positive electrode buses that are connected via another switches from between the positive electrode of each of the storage battery modules and the switch; two or more sets of negative electrode buses that are connected via another switches from between the negative electrode of each of the storage battery modules and the switch; a control unit, and a measuring unit. The control unit can discontinuously select the storage battery modules connected in series in a positional relationship on the series connection, adjusts an output voltage by switching the number of connections of the storage battery cells of the selected storage battery modules, and DC-charges an object to be charged.
Inventors:
INOUE HIDEKI (JP)
Application Number:
PCT/JP2023/006816
Publication Date:
October 26, 2023
Filing Date:
February 24, 2023
Export Citation:
Assignee:
HITACHI LTD (JP)
International Classes:
H02J7/00; H02J1/00; H02J3/32; H02J3/38; H02J7/35
Foreign References:
| DE102017107070A1 | 2018-10-04 | |||
| JP2013066329A | 2013-04-11 | |||
| JP2008079364A | 2008-04-03 | |||
| JPH0583880A | 1993-04-02 | |||
| JPS59198846A | 1984-11-10 |
Attorney, Agent or Firm:
POLAIRE I.P.C. (JP)
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