发明名称 |
Charging batteries rapidly and frequently, e.g. for electric vehicle - ascertaining battery charge, internal resistance and gas formation voltage in test cycle before charging from external current source |
摘要 |
Charging batteries involves using an external current source which is controlled to apply a defined charge voltage to the battery. The battery's state of charge, internal resistance and output voltage are determined before charging begins in a test cycle (31) involving increasing a test current whilst the voltage is continuously monitored. A gas formation voltage (29) derived from the voltage curve inversion point (20) is stored and the test current reduced, pref. to null. The voltage is then monitored for a defined period. A controlling charge current is then applied to achieve the gas formation voltage or lower. The test cycle is repeated at defined intervals during subsequent charging. ADVANTAGE - Rapid, frequent charging with long operating life achieved.
|
申请公布号 |
DE4203854(A1) |
申请公布日期 |
1992.09.03 |
申请号 |
DE19924203854 |
申请日期 |
1992.02.11 |
申请人 |
FRONIUS SCHWEISSMASCHINEN KG AUSTRIA, WELS-THALHEIM, AT |
发明人 |
GSELLMANN, JOSEF, DIPL.-ING.UNIV.DOZ.DR.TECHN., GRAZ, AT |
分类号 |
G01R31/36;H01M10/44;H02J7/00 |
主分类号 |
G01R31/36 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|