Battery device and electronic apparatus

• US 7,976,975 B2
• Filed: 08/21/2007
• Issued: 07/12/2011
• Est. Priority Date: 09/05/2006
• Status: Active Grant

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: Ajiki, Yoshiharu
• Primary Examiner(s): Ryan; Patrick
• Assistant Examiner(s): ANTHONY, JULIAN
• Application Number:
  US11/842,548
• Publication Number:
  US 20080057355A1
• Time in Patent Office: 1,421 Days
• Field of Search: 320/101, 429/111, 429/188, 429/122
• US Class Current: 429/111
• CPC Class Codes: H01G 9/2031 comprising titanium oxide, e.g. TiO2 H01G9/2036 takes precedence
• CPC Class Codes: H01G 9/2059 comprising an organic dye as the active light absorbing material, e.g. adsorbed on an electrode or dissolved in solution
• CPC Class Codes: H01G 9/2068 Panels or arrays of photoelectrochemical cells, e.g. photovoltaic modules based on photoelectrochemical cells
• CPC Class Codes: H01M 14/005 Photoelectrochemical storage cells light sensitive devices H01G9/20, semiconductors sensitive to light H01L31/00
• CPC Class Codes: Y02E 10/542 Dye sensitized solar cells
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product

Abstract

A battery device includes a photoelectric conversion device and a secondary battery. The photoelectric conversion device includes a first positive electrode, a first negative electrode, and a photoelectric conversion layer provided between the first positive electrode and the first negative electrode, the photoelectric conversion layer including an inorganic semiconductor and a pigment. The secondary battery includes a second positive electrode, a second negative electrode, and an electrolyte layer provided between the second positive electrode and the second negative electrode. Here, one of a first electrode pair and a second electrode pair is adhered directly, the first electrode pair including the first and the second positive electrodes, and the second electrode pair including the first and the second negative electrodes.

Claims

1. A battery device, comprising:

a photoelectric conversion device, including;

a first positive electrode;

a first negative electrode; and

a photoelectric conversion layer provided between the first positive electrode and the first negative electrode, the photoelectric conversion layer including an inorganic semiconductor and a pigment; and

a secondary battery, including;

a second positive electrode;

a second negative electrode; and

an electrolyte layer provided between the second positive electrode and the second negative electrode;

one of a first electrode pair and a second electrode pair being adhered to an intermediate layer, the first electrode pair including the first and the second positive electrodes, and the second electrode pair including the first and the second negative electrodes, one of the first electrode pair and the second electrode pair being electrically connected via the intermediate layer.

2. The battery device according to claim 1, wherein an output voltage of the photoelectric conversion device and a withstand voltage of the secondary battery are approximately the same.

3. The battery device according to claim 1, wherein an average thickness thereof is 100 to 700 μ

m.

4. The battery device according to claim 1, wherein an output voltage of the photoelectric conversion device is 0.55V or less.

5. The battery device according to claim 1, wherein the output voltage of the photoelectric conversion device is adjusted in accordance with at least one of a presence and a size of a region in which the pigment is not applied on the inorganic semiconductor layer when viewed from the top.

6. The battery device according to claim 1, wherein at least one of the second positive electrode and the second negative electrode of the secondary battery is composed with an electrode material containing silver vanadate.

7. The battery device according to claim 1, wherein the electrolyte layer of the secondary battery is composed with an electrolyte material containing silver iodide tungstate.

8. The battery device according to claim 1, wherein the second positive electrode is formed with a laminate, one layer therewithin having a current collector layer at a side farther from the electrolyte layer.

9. The battery device according to claim 1, wherein the second negative electrode is formed with a laminate, one layer therewithin having a current collector layer at a side farther from the electrolyte layer.

10. An electronic apparatus comprising the battery device according to claim 1.

11. A battery device, comprising:

a photoelectric conversion device, including;

a first positive electrode;

a first negative electrode; and

a photoelectric conversion layer provided between the first positive electrode and the first negative electrode, the photoelectric conversion layer including an inorganic semiconductor and a pigment; and

a secondary battery, including;

a second positive electrode;

a second negative electrode; and

an electrolyte layer provided between the second positive electrode and the second negative electrode;

one of a first electrode pair and a second electrode pair being adhered having a conductive intermediate layer therebetween, the first electrode pair including the first and the second positive electrodes, and the second electrode pair including the first and the second negative electrodes.

12. The battery device according to claim 11, wherein the intermediate layer is a laminate including a plurality of deposited layers.

13. The battery device according to claim 11, wherein the intermediate layer includes a resistor layer having a functionality to adjust the amount of electricity generated by the photoelectric conversion device in order for the electricity to be supplied to the secondary battery.

14. The battery device according to claim 11, wherein the intermediate layer includes a light reflecting layer having a functionality to reflect a light passing through the photoelectric conversion device back to the photoelectric conversion layer.

15. An electronic apparatus comprising the battery device according to claim 11.

16. A battery device, comprising:

a photoelectric conversion device, including;

a first positive electrode;

a first negative electrode; and

a photoelectric conversion layer provided between the first positive electrode and the first negative electrode, the photoelectric conversion layer including an inorganic semiconductor and a pigment; and

a secondary battery, including;

a second positive electrode;

a second negative electrode; and

an electrolyte layer provided between the second positive electrode and the second negative electrode;

one of a first electrode pair and a second electrode pair forming a common electrode, the first electrode pair including the first and the second positive electrodes, and the second electrode pair including the first and the second negative electrodes.

17. The battery device according to claim 16, wherein the common electrode has a functionality of a light reflecting layer.