Title:
POWER SYSTEM
Document Type and Number:
Japanese Patent JPH1169653
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To connect a load device and a charging equipment by a fewest number of terminals, by composing the connection of the load device and the charging equipement of three terminals at most and controlling the charging equipment by return voltage and a return current from the load device at two terminals in three terminals. SOLUTION: A charging equipment 1 is connected to a load device 2 by three terminals 5, 6, 7 and supplies the load device 2 with power while the supply of a charging current to a secondary battery 4, a load current to a load control section 9, and a charging current to a secondary battery 3 are controlled optimally by controlling the load control section 9. Accordingly, a power supply section 10 is controlled in response to the return voltage of the terminal 6 and a return current passed through the terminal 7, and the charging equipment 1 can be given required output characteristics by the fewest number of terminals.
Inventors:
NISHIKAWA TSUTOMU
HAYASHI ISAO
HAYASHI ISAO
Application Number:
JP22353497A
Publication Date:
March 09, 1999
Filing Date:
August 20, 1997
Export Citation:
Assignee:
CANON KK
International Classes:
H02J7/34; H02M7/21; (IPC1-7): H02J7/34; H02M7/21
Attorney, Agent or Firm:
Hiroyuki Niwa (1 outside)