Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries
Patent
1995-11-06
1997-07-29
Tso, Edward
Electricity: battery or capacitor charging or discharging
Serially connected batteries or cells
With discharge of cells or batteries
320 35, H01M 1046, H02J 724
Patent
active
056525001
ABSTRACT:
A battery pack is charged while being cooled by passing forced air therethrough. During charging, battery temperature and air temperature of air exhausted from the battery modules by the forced air cooling process are measured, and the difference between the battery temperature and the air temperature is calculated. The difference is added to an amount of change of the battery temperature per unit time to obtain a rate of change of battery temperature. When the rate of change exceeds a predetermined value, charging of the battery pack is controlled. In this manner, the battery temperature rise is correctly detected so that the battery pack can be fully charged without being damaged.
REFERENCES:
patent: 5252906 (1993-10-01), Busson
patent: 5477127 (1995-12-01), Shiojima et al.
patent: 5492199 (1996-02-01), Koenck et al.
Ito Noboru
Kadouchi Eiji
Kinoshita Megumi
Takata Kanji
Watanabe Yuichi
Matsushita Electric - Industrial Co., Ltd.
Tso Edward
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