发明名称 |
Method for monitoring battery discharge by determining the second derivative of battery voltage over time |
摘要 |
The state of charge of a rechargeable battery (12), such as those made from lithium, nickel-cadmium or metal hydrides, can be accurately determined by monitoring the rate of change of battery voltage over time (dv/dt), which parameter has empirically been found to change dramatically as the battery reaches complete discharge.
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申请公布号 |
US5278509(A) |
申请公布日期 |
1994.01.11 |
申请号 |
US19920829635 |
申请日期 |
1992.02.03 |
申请人 |
AT&T BELL LABORATORIES |
发明人 |
HAYNES, RICHARD;LEVY, ROBERT B. |
分类号 |
G01R31/36;(IPC1-7):G01N27/416;H02J7/04 |
主分类号 |
G01R31/36 |
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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