Battery power supply system

• US 5,592,074 A
• Filed: 06/10/1993
• Issued: 01/07/1997
• Est. Priority Date: 06/26/1992
• Status: Expired due to Term

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Takehara, Nobuyoshi
• Primary Examiner(s): NGUYEN, MATTHEW VAN
• Application Number:
  US08/074,463
• Time in Patent Office: 1,307 Days
• Field of Search: 363/131, 323/906, 307/64, 320/56, 320/61, 340/661, 340/825.06
• US Class Current: 363/131
• CPC Class Codes: H02J 13/00022 using wireless data transmission
• CPC Class Codes: H02J 13/00034 the elements or equipment being or involving an electric power substation
• CPC Class Codes: H02J 2300/24 of photovoltaic origin
• CPC Class Codes: H02J 3/381 Dispersed generators
• CPC Class Codes: H02J 5/00 Circuit arrangements for transfer of electric power between ac networks and dc networks H02J3/36 takes precedence
• CPC Class Codes: H02J 7/02 for charging batteries from ac mains by converters
• CPC Class Codes: H02J 7/35 with light sensitive cells
• CPC Class Codes: Y02E 10/56 Power conversion systems, e.g. maximum power point trackers
• CPC Class Codes: Y02E 40/70 Smart grids as climate change mitigation technology in the energy generation sector
• CPC Class Codes: Y02E 60/00 Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
• CPC Class Codes: Y02P 90/50 Energy storage in industry with an added climate change mitigation effect
• CPC Class Codes: Y04S 10/123 the energy generation units being or involving renewable energy sources
• CPC Class Codes: Y04S 40/126 using wireless data transmission
• CPC Class Codes: Y10S 136/293 Circuits
• CPC Class Codes: Y10S 323/906 Solar cell systems

Abstract

A battery power supply system permits inexpensive introduction of a transfer break system to a solar cell generation system and quick release of reverse charge phenomenon. The battery power supply system comprises a solar cell array (1), a DC-AC inverter (2), a break device (3) for a commercial power system, and wireless communication device (4) as control device for controlling the conduction and break of the break device based on the information derived through wireless communication.

Claims

1. A power supply system comprising:

a first power supply connected in a system line;

a DC-AC inverter for converting a DC output of said first power supply to an AC output so as to supply the converted AC output to a load;

a second power supply for supplying an AC power to the load connected in the system line; and

a break device for electrically disconnecting the first power supply from the system line in response to information derived from a wireless communication means.

2. A power supply system according to claim 1, wherein the frequency of said wireless communication means is around a middle wave broadcast band.

3. A power supply system according to claim 1, wherein the frequency of said wireless communication means is around a TV broadcast band.

4. A power supply system according to claim 1, wherein said information comprises time information.

5. A power supply system according to claim 1, wherein said information comprises identification information.

6. A power supply system according to claim 1, wherein the first power supply comprises solar cell battery power supplying means.

7. A power supply system according to claim 1, further comprising means for turning off said DC-AC inverter.

8. A method of breaking power from a battery power supply, comprising the steps of:

electrically connecting a first power supply, a DC-AC inverter for converting a DC output of the first power supply to an AC output so as to supply the converted AC output to a load and a second power supply for supplying an AC power to the load in a common system line; and

electrically disconnecting said first power supply from the system line in response to information derived from a wireless communication.

9. A method according to claim 8, wherein said battery power supply is a solar cell battery power supply.

10. A method according to claim 8, wherein a frequency of the wireless communication is set around the middle wave broadcast band.

11. A method according to claim 8, wherein a frequency of the wireless communication is set around the TV broadcast band.

12. A method according to claim 8 wherein the wireless communication comprises time information.

13. A method according to claim 8, wherein the wireless communication comprises identification information.