A controller (30) causes to first power converter and a second power converter (boost converters 12B and 12C) to cooperate, and achieve bidirectional transmission of electric power between a first power storage device (battery B) and an electric load (4), ...

There is provided a charge controller capable of charging a capacitor while suppressing the progress of deterioration of the capacitor without unnecessary charge/discharge of the capacitor. The charge controller includes a voltage sensor 133 that detects t...

An electric double layered capacitor comprising a bag-shaped soft case (5) in which a plurality of positive electrodes and negative electrodes, and a separator are received and laminated together with an electrolytic solution, a capacitor cell (1) provided...

The invention proposes a supercapacitors voltage balancing device (2) to be connected to a supercapacitor module (1) having N individual supercapacitors (10) connected in series, for optimizing the voltage of the individual supercapacitors in the module. T...

Power supply (6) for E/M conversion means (1), fit to convert electric energy, in the form of direct current (DC), into mechanical energy electric and fit to convert back mechanical energy into DC electrical energy. The power supply comprises a main DC sup...

A capacitor unit using a plurality of capacitors and which has a long lifetime and is maintenance-free is provided. The capacitor unit has a high reliability even in harsh using conditions of vibration and shock and a high noise resistant property. This ca...

The capacitor has capacitor cells (1) that are formed by storing a laminate of positive electrodes, negative electrodes, and separators in a bag-like soft case with an electrolyte. A heat conduction frame (15) clamps the heat radiation fins (5a) projecting...

In a hybrid power supply system which includes an electric double layer capacitor (10) having a pair of capacitor terminals (11 and 12), an energy storage (70a), and first and second bidirectional DC/DC converters (30a and 30b), the above-mentioned pair of...

Disclosed is a fuel cell power supply device which can accurately determine a requested output current of a fuel cell depending on an electric energy requested by a load even if output current/voltage characteristics of the fuel cell change. A power supply...