Method of charging and discharging battery and power source apparatus adopting the same

Patent 5177425 Issued on January 5, 1993. Estimated Expiration Date:

January 5, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

Method of charging storage battery in power supply system having another battery of larger capacity
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Inventor

Goto, Kenji

Assignee

Toyota Jidosha Kabushiki Kaisha

Application

No. 372601 filed on 06/28/1989

US Classes:

320/130Cycling (e.g., discharge/charge cycle, etc.)

Examiners

Primary: Voeltz, Emanuel T.
Assistant: Peckman, Kristine

Attorney, Agent or Firm

Cushman, Darby & Cushman

Foreign Patent References

3317531 DE. 11/12/1983
56-28476 JP. 03/12/1981
56-132775 JP. 10/12/1981
60-49577 JP. 03/12/1985
60-124371 JP. 07/12/1985
60-124372 JP. 07/12/1985
62-144066 JP. 09/12/1987

International Class

H02J 007/00

Foreign Application Priority Data

1988-07-01 JP

Abstract

A battery is divided into a plurality of battery blocks. An amount of current flowing into a coil is rapidly changed by a switching element so as to raise the output voltage of one battery block. The power of the battery block is transferred to another battery block by utilizing the thus-raised voltage. This operation is subsequently repeated for each battert block. Thus, all the blocks are subsequently completely discharged for achieving the equalization of the amount of charge of each block.