| 发明名称 | Battery system and associated method for determining the internal resistance of battery cells or battery modules of said battery system | ||
| 摘要 | A method for determining the internal resistance of battery cells of battery modules of a battery includes measuring a first voltage of at least one battery cell of a first battery module at a first time. The first battery module is decoupled from the battery module string in response to a control signal. The first battery module is connected to the battery module string after the first voltage measurement to enable a change in the first voltage of the at least one battery cell in response to a current flowing through the first battery module. A second voltage is measured at a second time where the first battery module is connected to the battery module string for a predefined time interval. The internal resistance is determined with reference to a difference between the first and the second voltage and the current flowing through the first battery module. | ||
| 申请公布号 | US9634361(B2) | 申请公布日期 | 2017.04.25 |
| 申请号 | US201314405840 | 申请日期 | 2013.05.24 |
| 申请人 | Robert Boasch GmbH;Samsung SDI Co., Ltd. | 发明人 | Fink Holger |
| 分类号 | G01N27/416;H01M10/48;G01R31/36;G01K13/00;H01M10/42 | 主分类号 | G01N27/416 |
| 代理机构 | Maginot, Moore & Beck LLP | 代理人 | Maginot, Moore & Beck LLP |
| 主权项 | 1. A method for determining an internal resistance of battery cells of battery modules of a battery, comprising: measuring a first voltage of at least one battery cell of a first battery module of the battery modules at a first time, wherein the first battery module is decoupled from a battery module string in response to a first control signal; connecting, in response to a second control signal, the first battery module to the battery module string after the first voltage measurement to enable a change in the first voltage of the at least one battery cell in response to a current flowing through the first battery module; measuring a second voltage of the at least one battery cell at a second time after the connection of the first battery module to the battery module string, wherein the first battery module is connected to the battery module string for a predefined time interval; and determining the internal resistance after the measurement of the second voltage of the at least one battery cell with reference to (i) a difference between the first voltage and the second voltage and (ii) a current value of a current flowing through the first battery module. | ||
| 地址 | Stuttgart DE | ||