Method and system for detecting contactor weld
US11981216B2 · kind B2 · utility
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13References
18Claims
0Family size
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Key dates
| Filing date | Jan 13, 2021 |
| Grant date | May 14, 2024 |
| Priority date | — |
| Expiry date | Dec 6, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/70
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A power system includes a battery and a controller. The controller inhibits charge of the battery according to voltage or current values sensed before and after contactors electrically connected to the battery are commanded to open and indicating that a leakage resistance associated with one of the contactors increases after the one of contactors is commanded to open, and a duration of a continuous voltage drop across another of the contactors after the another of the contactors is commanded to open exceeds a threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.