A battery pack (40) includes battery modules, a flat battery box (20), and a solar panel (10). The modules are arranged in parallel to each other. Each module includes cylindrical rechargeable battery cells (41) that are arranged side by side in the longit...

A power conversion device includes: a DC/DC convertor (5) that performs DC/DC conversion on an output voltage of a direct-current power supply (for example, a solar battery module (1)); and a DC/AC invertor (6) that performs DC/AC conversion on an output v...

A switching circuit capable of efficiently practically using power generated in a plurality of photovoltaic power generation modules is provided. The switching circuit (22) is employed for a power generation system (1) capable of switching a connection sta...

There is provided a control apparatus that instantaneously switches a DC/DC converter from a maximum-power-point tracking operation to an output voltage control operation, and can constantly supply an electric power to a load. The control apparatus include...

The device (10) has an input (11) connected to an electrical energy generator i.e. photovoltaic generator (12), and a storage unit for storing electrical energy generated by the generator. A voltage and/or current regulator manages the electrical energy. A...

An energy storage system includes a converter coupleable to a power generator and a battery in parallel, thereby reducing the number of devices for circuit implementation and the size of a printed circuit board (PCB). The energy storage system is to be cou...

Disclosed herein is solar power-generating equipment, including: a solar cell; a secondary battery; an electric power outputting portion; a display portion configured to display thereon information about an electric-generating capacity of the solar cell, a...

Disclosed herein is a secondary battery protecting circuit connected in parallel with a nonaqueous secondary battery, the secondary battery protecting circuit including: a first voltage detecting circuit; a second voltage detecting circuit; a switch sectio...

A Photo-chargeable secondary battery, carrying a charging performance representing a sufficient durability against repetition use by combining a flexible and durable photoelectric conversion sheet with a photoelectric transducer and a storage battery, comp...