초록 ▼

A photovoltaic-charged secondary battery device has a cylindrical core, a flexible photoelectric transducer sheet extractably rolled on the core, a chargeable/dischargeable storage battery, and a control circuit for controlling the charging and discharging operations of the storage battery. The phot

A photovoltaic-charged secondary battery device has a cylindrical core, a flexible photoelectric transducer sheet extractably rolled on the core, a chargeable/dischargeable storage battery, and a control circuit for controlling the charging and discharging operations of the storage battery. The photovoltaic-charged secondary battery device with the photoelectric transducer sheet fully rolled on the core generally exhibiting a substantially cylindrical form. The photovoltaic-charged secondary battery device further has a polymeric cover film formed on the light-receiving surface of the photoelectric transducer sheet. The polymeric cover film improves the durability of the photoelectric transducer sheet against repeated bending and sliding actions caused on the photoelectric transducer sheet. The photoelectric transducer sheet may be so arranged that, when the photoelectric transducer sheet is rolled on the core, the light-receiving surface faces outward of the roll. The photovoltaic-charged secondary battery device may have a cylindrical peripheral wall coaxial with the core and defining therebetween an annular space for accommodating the photoelectric transducer sheet rolled on the core. The photoelectric transducer sheet is retractable into and extractable from the annular space through a slit formed in the cylindrical peripheral wall member. The cylindrical peripheral wall member is rotatable relative to the core, so that the photoelectric transducer sheet can be retracted into the annular space and rolled on the core as the cylindrical peripheral wall member is rotated. The cylindrical peripheral wall member may have a plurality of projections formed on the inner surface thereof. The photovoltaic-charged secondary battery device may have a temperature-responsive mechanism operable to disconnect the storage battery from the electrical connection or to move the storage battery from a predetermined position.

대표청구항 ▼

1. A photovoltaic-charged secondary battery device comprising:a cylindrical core; a flexible photoelectric transducer sheet extractably rolled on said core; a chargeable/dischargeable storage battery; and a control circuit for controlling the charging and discharging operations of said storage batte

1. A photovoltaic-charged secondary battery device comprising:a cylindrical core; a flexible photoelectric transducer sheet extractably rolled on said core; a chargeable/dischargeable storage battery; and a control circuit for controlling the charging and discharging operations of said storage battery; said photovoltaic-charged secondary battery device with said photoelectric transducer sheet fully rolled on said core generally exhibiting a substantially cylindrical form; said photovoltaic-charged secondary battery device further comprising a polymeric cover film formed on at least the light-receiving surface of said photoelectric transducer sheet.