Photovoltaic-storage battery device

• US 4,481,265 A
• Filed: 06/08/1983
• Issued: 11/06/1984
• Est. Priority Date: 06/11/1982
• Status: Expired due to Fees

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Suzuki, Kenkichi, Kumada, Masaharu, Misumi, Akira, Ezawa, Masayoshi
• Primary Examiner(s): Weisstuch, Aaron
• Application Number:
  US06/502,086
• Time in Patent Office: 517 Days
• Field of Search: 429/9, 320/2, 136/244, 136/291, 136/293, 136/258 AM
• US Class Current: 429/9
• CPC Class Codes: H01L 31/046 PV modules composed of a plurality of thin film solar cells deposited on the same substrate
• CPC Class Codes: H01L 31/053 Energy storage means directly associated or integrated with the PV cell, e.g. a capacitor integrated with a PV cell energy storage means associated with the PV module H02S40/38
• CPC Class Codes: H01M 10/05 Accumulators with non-aqueous electrolyte H01M10/39 takes precedence
• CPC Class Codes: H01M 10/465 with solar battery as charging system
• CPC Class Codes: H01M 16/00 Structural combinations of different types of electrochemical generators
• CPC Class Codes: H02S 40/38 Energy storage means, e.g. batteries, structurally associated with PV modules
• CPC Class Codes: Y02E 10/50 Photovoltaic [PV] energy
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02E 70/30 Systems combining energy storage with energy generation of non-fossil origin
• CPC Class Codes: Y10S 136/291 Applications
• CPC Class Codes: Y10S 136/293 Circuits

Abstract

A photovoltaic-storage battery device is disclosed, which comprises a substrate having a pair of major surfaces, a photovoltaic element formed on one major surface of the substrate and including a pair of opposing electrodes and a photoelectric film intervening between the pair of opposing electrodes and a storage battery element formed on the other major surface of the substrate and including a second pair of opposing electrodes which are connectable to the first-mentioned pair of opposing electrodes, respectively, and an electrolyte intervening between the second-mentioned pair of opposing electrodes.

Claims

1. A photovoltaic-storage battery device comprising:

an elongated thin metal strip substrate having a pair of major surfaces each with an insulating film formed thereon.

a plurality of photovoltaic elements formed on one insulated major surface of said substrate each photovolatic element including a first pair of spaced electrodes opposing each other and an amorphous silicon film intervening between each said first pair of opposing electrodes;

a plurality of storage battery elements formed on the other major insulated surface of said substrate, each storage battery element including a second pair of spaced opposing electrodes and an electrolyte intervening between each said second pair of opposing electrodes; and

electrical connections between said plurality of photovoltaic elements and said storage battery elements to form a multicell source of solar electric power with corresponding storage battery reserve power.

2. A photovoltaic-storage battery device according to claim 1, wherein said substrate is comprised of first and second sub-substrates, said photovoltaic elements being formed on one major insulated surface of said first sub-substrate, said storage battery elements being formed on one major insulated surface of said second sub-substrate, the other major surfaces of said first and second sub-substrates being bonded together.

3. A photovoltaic-storage battery device according to claim 1, wherein each said photovoltaic element further includes a protective film formed on one of said first pair of electrodes.

4. A photovoltaic-storage battery device according to claim 1, wherein each said storage battery element further includes organic films having a charge storage effect and intervening between each said second pair of opposing electrodes.

5. A photovoltaic-storage battery device according to claim 1, wherein each said storage battery element further includes inorganic films intervening between each said second pair of opposing electrodes.

6. A photovoltaic-storage battery device according to claim 1, wherein said electrolyte is a liquid mixture electrolyte containing an organic substance.

7. A photovoltaic-storage battery device according to claim 1, wherein said electrolyte is a liquid electrolyte containing an inorganic substance.

8. A photovoltaic-storage battery device according to claim 1, wherein said electrolyte is a solid electrolyte containing an organic substance.

9. A photovoltaic-storage battery device according to claim 1, wherein said electrolyte is a solid electrolyte containing an inorganic substance.

10. A photovoltaic-storage battery device according to claim 1, wherein said thin metal substrate is a thin stainless steel substrate.

11. A photovoltaic-storage battery device comprising:

a thin metal substrate having a pair of major surfaces each with an insulating film formed thereon;

a plurality of photovoltaic amorphous silicon elements formed on one major surface of said substrate and connected in series; and

a plurality of storage battery elements formed on the other major surface of said substrate and connected in series;

each of said photovoltaic elements including a pair of opposing electrodes and a photoelectric film intervening between said opposing electrodes, one of the pair of opposing electrodes of a pair of adjacent photovoltaic elements and the other electrode of the other adjacent photovoltaic element of said pair of adjacent photovoltaic elements being electrically connected together;

each of said storage battery elements including a pair of opposing electrodes and an electrolyte intervening between said pair of opposing electrodes, one of the pair of opposing electrodes of a pair of adjacent storage battery elements and the other electrode of the other adjacent storage battery element of said pair of adjacent storage battery elements being electrically connected together;

the number of said photovoltaic elements and the number of said storage battery elements being selected such that the voltage of the group of photovoltaic elements and the voltage of the group of storage battery elements match with each other.