CHARGER - SANYO ELECTRIC CO

Title:

CHARGER

Document Type and Number:

WIPO Patent Application WO/2014/073182

Kind Code:

A1

Abstract:

The purpose of the present invention is to reduce the size of a charger that is configured to reduce standby power to as low as possible. The charger comprises: a voltage conversion circuit (100) for generating a DC voltage; an output terminal (200a, 200b) for supplying an object to be charged with the DC voltage; an auxiliary power source (300) interposed between a pair of electric paths which connects the output terminal (200a, 200b) with the voltage conversion circuit (100); a voltage detection circuit for detecting the terminal voltage of the auxiliary power source (300); a voltage conversion control unit (500) which operates with power received from the auxiliary power source (300), and, when the object to be charged is not connected to the output terminal (200a, 200b), outputs a control signal which activates the voltage conversion circuit (100) for a period during which the auxiliary power source (300) needs to be charged , and deactivates the voltage conversion circuit (100) for a period during which the auxiliary power source (300) does not need to be charged; and a detection mechanism for detecting a state change from a disconnected state to a connected state where the object to be charged is connected to the output terminal (200a, 200b).

Inventors:

YAGI TATEHITO
SUGIHARA RYUZO

Application Number:

PCT/JP2013/006378

Publication Date:

May 15, 2014

Filing Date:

October 29, 2013

Export Citation:

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Assignee:

SANYO ELECTRIC CO (JP)

International Classes:

H02J7/10; H02M3/28

Foreign References:

JP2010016984A	2010-01-21
JP2011024299A	2011-02-03
JP2006254655A	2006-09-21
JP2005333708A	2005-12-02