Photochargeable secondary battery

摘要

The present invention concerns a photoelectric charging secondary battery durable enough to be repeatedly used which is obtained by combining a photoelectric conversion sheet including a photoelectric conversion element formed having a flexibility and a durability with a storage battery. The photoelectric charging secondary battery includes a cylindrical coil core part (2), a photoelectric conversion element (11) having a flexibility coiled and disposed so as to be freely withdrawn out relative to the coil core part, a storage battery (4) capable of being charged and discharged, and a control circuit part (5) for controlling the charge and discharge of the storage battery. While the photoelectric conversion element is coiled on the coil core part, the photoelectric charging secondary battery is entirely formed in a substantially cylindrical form. The storage battery is detachably attached to the coil core part. The photoelectric conversion element is folded along a direction to be withdrawn. An engaging part (3a) forming a knob is provided in the photoelectric conversion element and a means for accommodating a plurality of different kinds of batteries is provided.