发明名称 |
Device and method for controlling charging of secondary battery |
摘要 |
A device and method is provided that can detect overcharge reliably by separating heat generated by internal resistance and heat chemically generated upon overcharging in a secondary battery. Based on the temperature of the secondary battery detected every first predetermined time by a battery temperature detection section, a temperature gradient operation section calculates a temperature gradient indicating a temperature increase per unit time for every second predetermined time that is longer than the first predetermined time. When a temperature gradient determination section determines that the temperature gradient is larger than a predetermined temperature gradient threshold, which is preset according to the charged state of the secondary battery, N times in a row (where N is a natural number), a fully charged state of the secondary battery is detected.
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申请公布号 |
US6380717(B2) |
申请公布日期 |
2002.04.30 |
申请号 |
US20010802267 |
申请日期 |
2001.03.08 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.;TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
MURAKAMI YUSAI;KIMURA TADAO;NAKANISHI TOSHIAKI;KATSUDA TOSHIHIRO;KIKUCHI YOSHIAKI |
分类号 |
H02J7/10;H01M10/44;H01M10/48;H02J7/00;(IPC1-7):H01M10/44;H01M10/46 |
主分类号 |
H02J7/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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