发明授权
US5969508A Battery charging method using battery circuitry impedence measurement to
determine optimum charging voltage
失效
使用电池电路阻抗测量的电池充电方法来确定最佳充电电压
- 专利标题: Battery charging method using battery circuitry impedence measurement to determine optimum charging voltage
- 专利标题(中): 使用电池电路阻抗测量的电池充电方法来确定最佳充电电压
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申请号: US122707申请日: 1998-07-27
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公开(公告)号: US5969508A公开(公告)日: 1999-10-19
- 发明人: Joseph Patino , Michael D. Geren , Barbara R. Doutre
- 申请人: Joseph Patino , Michael D. Geren , Barbara R. Doutre
- 申请人地址: IL Schaumburg
- 专利权人: Motorola, Inc.
- 当前专利权人: Motorola, Inc.
- 当前专利权人地址: IL Schaumburg
- 主分类号: H02J7/00
- IPC分类号: H02J7/00 ; H02N7/00
摘要:
A charging technique (200) charges a battery pack (102) by taking into account the additional internal circuit impedance of the battery pack. An optimum pack voltage value for the battery pack is calculated (208) based on the rated internal cell voltage as well as the charge current and the internal battery pack circuitry impedance. The battery pack can now be charged such that the internal battery cell voltage is maintained at the rated voltage throughout the charging process. The optimum pack voltage is also updated (220) to account for variations in the battery pack circuitry impedance over temperature (216, 218) as well as variations in charge current (222, 224) during the charging process.
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