发明名称 |
Device and method for controlled charging of a secondary battery |
摘要 |
<p>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 (10) detected every first predetermined time by a battery temperature detection section (12), a temperature gradient operation section (14) 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 (16) 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. <IMAGE></p> |
申请公布号 |
EP1132989(B1) |
申请公布日期 |
2014.05.07 |
申请号 |
EP20010105782 |
申请日期 |
2001.03.08 |
申请人 |
PANASONIC CORPORATION;TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
MURAKAMI, YUSAI;KIMURA, TADAO;NAKANISHI, TOSHIAKI;KATSUDA, TOSHIHIRO;KIKUCHI, YOSHIAKI |
分类号 |
H02J7/00;H02J7/10;H01M10/44;H01M10/48 |
主分类号 |
H02J7/00 |
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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