| 发明名称 | Circuit and method for battery leakage detection | ||
| 摘要 | A battery management system includes a switching element configured to selectively couple a resistive network in parallel with a capacitor that couples a voltage bus and a ground reference. A controller is programmed to, in response to activating the switching element for a predetermined time, output a diagnostic according to a leakage resistance that is based on a time associated with a predetermined change in a voltage across the capacitor. A time constant is derived from the voltage response and the leakage resistance is derived from the time constant. | ||
| 申请公布号 | US9630520(B2) | 申请公布日期 | 2017.04.25 |
| 申请号 | US201514595478 | 申请日期 | 2015.01.13 |
| 申请人 | Ford Global Technologies, LLC | 发明人 | Tabatowski-Bush Benjamin A.;Bilezikjian John Peter |
| 分类号 | B60L11/18;B60L3/00;B60L3/12;B60L11/14;G01R27/14;B60L9/00 | 主分类号 | B60L11/18 |
| 代理机构 | Brooks Kushman P.C. | 代理人 | Kelley David;Brooks Kushman P.C. |
| 主权项 | 1. A vehicle comprising: a capacitor connected between a voltage bus and a chassis of the vehicle; and at least one controller programmed to, in response to activating a switching element to couple a resistive network in parallel with the capacitor for a predetermined time, output a diagnostic according to a leakage resistance estimate that is based on a time associated with a predetermined change in a voltage across the capacitor. | ||
| 地址 | Dearborn MI US | ||