Title:
【発明の名称】電力貯蔵用二次電池の充放電電流測定方法及び残存電力量測定方法並びに測定装置
Document Type and Number:
Japanese Patent JP2937796
Kind Code:
B2
Abstract:
PURPOSE:To accurately measure and evaluate the residual capacity of a secondary battery with a low-cost measuring circuitry configuration without use of any high precision insulated amplifier etc. CONSTITUTION:At the time of charging and discharging a secondary battery 1, currents in different directions flowing in a charge/discharge circuit 2 are fed to a measuring circuit 5 upon putting them together as either in the positive direction or negative direction through the polarity inversion made by a polarity inverter circuit 6. The measuring circuit 5 has a measuring instrument 9 which measures the fed charging current and discharging current and determines the residual capacity of the secondary battery 1 through cumulation of the measurements.
Inventors:
KAWAGUCHI TOSHUKI
ABE HIROYUKI
ABE HIROYUKI
Application Number:
JP6950895A
Publication Date:
August 23, 1999
Filing Date:
March 28, 1995
Export Citation:
Assignee:
NIPPON GAISHI KK
TOKYO DENRYOKU KK
TOKYO DENRYOKU KK
International Classes:
G01R31/36; H01M10/48; H02J7/00; (IPC1-7): H01M10/48; G01R31/36; H02J7/00
Attorney, Agent or Firm:
Hironobu Onda