Title:
SODIUM-SULFUR SECONDARY CELL SYSTEM AND METHOD FOR CONTROLLING THE SAME
Document Type and Number:
WIPO Patent Application WO/1998/043310
Kind Code:
A1
Abstract:
A safe, large-capacity, and high-efficiency sodium-sulfur secondary cell system manufactured at a low cost. The system is provided therein with (a) a measuring means which measures the internal temperature, voltage, current, etc., of a battery pack which are required to determine control parameters, (b) a storage device for recording measured data, (c) an arithmetic device which calculates the control parameters based on the measured or recorded data, and (d) a control mechanism which controls the system by using the calculated control parameters. It is effective to incorporate (e) an inference mechanism in the system for predicting numerical values required to calculate the control parameter from limited measured data, because the measurement of all necessary information is very expensive, when the system is of a very large scale.
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Inventors:
DOI TOSHIYA (JP)
NISHIMURA SHIGEOKI (JP)
KAMO TOMOICHI (JP)
NISHIMURA SHIGEOKI (JP)
KAMO TOMOICHI (JP)
Application Number:
PCT/JP1997/001010
Publication Date:
October 01, 1998
Filing Date:
March 26, 1997
Export Citation:
Assignee:
HITACHI LTD (JP)
DOI TOSHIYA (JP)
NISHIMURA SHIGEOKI (JP)
KAMO TOMOICHI (JP)
DOI TOSHIYA (JP)
NISHIMURA SHIGEOKI (JP)
KAMO TOMOICHI (JP)
International Classes:
H01M10/39; H01M10/48; (IPC1-7): H01M10/39
Foreign References:
| JPH0850930A | 1996-02-20 | |||
| JPH05258779A | 1993-10-08 |
Other References:
US DOE REPORTS, No. EPRI-EM-3631-SR, (December 1984), (Washington) S. IWABUCHI et al., "Test Results of a 1KW/8KWH Battery".
Attorney, Agent or Firm:
Ogawa, Katsuo (5-1, Marunouchi 1-chom, Chiyoda-ku Tokyo 100, JP)
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