发明名称 |
Shunt recognition in lithium batteries |
摘要 |
An apparatus and method of recognizing a shunt caused by formation of dendrites in a rechargeable lithium battery which comprises charging the battery with a charging current, sampling the charging current voltage of the battery at pre-determined time intervals in order to identify one or more point indicating onset of shunting, and terminating charging if the shunt or dendrite is indicated. If a shunt is not recognized charging is continued. Dendrite formation or the beginning of shunting due to such formation is indicated by any one of the following conditions: a negative gradient in sampled voltage values; a negative gradient in sampled steady open circuit values; and a negative gradient in the chemical polarization voltage values which may be calculated by sampling both the open circuit voltage soon after current interruption and steady open circuit voltages during a plurality of currentless phases.
|
申请公布号 |
US5729116(A) |
申请公布日期 |
1998.03.17 |
申请号 |
US19960771030 |
申请日期 |
1996.12.20 |
申请人 |
TOTAL BATTERY MANAGEMENT, INC. |
发明人 |
TSENTER, BORIS |
分类号 |
H01M10/44;H02J7/00;(IPC1-7):H01M10/44;H02J7/04 |
主分类号 |
H01M10/44 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|