Energy storing apparatus

• US 4,797,566 A
• Filed: 02/27/1987
• Issued: 01/10/1989
• Est. Priority Date: 02/27/1986
• Status: Expired due to Term

• Current Assignee: Ebara Corporation, Agency of Industrial Science & Technology (Government of Japan)
• Original Assignee: Ebara Corporation, Agency of Industrial Science & Technology (Government of Japan)
• Inventors: Nozaki, Ken, Akai, Yuichi
• Primary Examiner(s): Shoop, Jr., William M.
• Assistant Examiner(s): IP, SHIK LUEN PAUL
• Application Number:
  US07/019,621
• Time in Patent Office: 683 Days
• Field of Search: 307/43, 307/46, 307/48, 307/66, 307/64, 322/4, 290/1 R, 290/45, 290/46, 290/55, 290/2 R, 290/4 R, 429/101, 429/109, 429/202, 429/111, 429/209, 429/205, 429/5, 429/107, 60/641.1, 60/652, 60/659, 60/669, 60/650, 60/641.6, 323/906, 320/45 R
• US Class Current: 307/43
• CPC Class Codes: H01M 10/44 Methods for charging or discharging circuits for charging H02J7/00
• CPC Class Codes: H01M 16/00 Structural combinations of different types of electrochemical generators
• CPC Class Codes: H02J 7/35 with light sensitive cells
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y10S 323/906 Solar cell systems

Abstract

An electric energy storing apparatus comprising lead-acid storage battery means and flowing type battery means. The lead-acid storage battery means is connectable to power lines interconnecting electric power generating means and a load, and the flowing type battery is connectable to the lead-acid storage battery means in order to charge the storage battery means, execute an equalization charge, or act as an end cell for the storage battery means.

Claims

1. An energy storing apparatus including power generating means, a load and power lines interconnected between said electric power generating means and said load, comprising:

lead-acid storage battery means;

flowing type battery means;

first switch means for connecting said lead-acid battery means with said power lines;

second switch means for connecting said flowing type battery means with said power lines;

third switch means for connecting said lead-acid battery means with said flowing type battery means;

wherein such first, second and third switch means are selectively operated so that said lead-acid battery means and said flowing type battery means are charged by surplus electric energy when the amount of electric energy supplied from said electric power generating means is larger than the amount of electric energy being consumed by said load, that said lead-acid battery means supplies the electric energy stored therein to said load when the amount of electric energy consumed by said load is larger than the amount of electric energy supplied from said electric energy generating means, and that said flowing type battery means operates to charge said lead-acid battery means.

2. An apparatus as claimed in claim 1 further comprising switch means for connecting said flowing type battery means to said power lines, wherein, when the switch means operates, said flowing type battery means is charged by said electric power generating means or discharges to said load.

3. An apparatus as claimed in claim 2 wherein said flowing type battery means is electrically connected to said lead-acid storage battery means for charging thereof.

4. An apparatus as claimed in claim 2 wherein said flowing type battery means is electrically connected to said lead-acid storage battery means for executing an equalization charge therefor.

5. An apparatus as claimed in claim 2 wherein said flowing type battery means is electrically connected to said lead-acid storage battery means so as to serve as an end cell, thereby compensating for any decrease in the discharge voltage of said lead-acid storage battery means.

6. An apparatus as claimed in claim 2 wherein said flowing type battery means simultaneously act for equalization charges and as an end cell.

7. An apparatus as claimed in claim 3 wherein said lead-acid storage battery means includes two lead-acid storage batteries, and these two lead-acid storage batteries are alternatively charged by said flowing type battery means.

8. An apparatus as claimed in claim 4 wherein said lead-acid storage battery means includes two lead-acid storage batteries, and one of the two storage batteries is subjected to an equalization charge while the other is connected to said load.

9. An apparatus as claimed in claim 5 wherein a part of said flowing type battery means is used for said end cell.

10. An apparatus as claimed in any one of the preceding claims wherein said flowing type battery means is an electrolyte flowing type battery.

11. An apparatus as claimed in claim 10 wherein said electrolyte flowing type battery is a redox battery.