| 主权项 |
1. A system for detecting cell failure within a battery pack, wherein the battery pack is comprised of a plurality of cells, the system comprising:
an isolation resistance monitoring subsystem, wherein said isolation resistance monitoring subsystem monitors an electrical isolation resistance of said battery pack; a secondary effect monitoring subsystem that detects a secondary effect indicative of said cell failure, said secondary effect comprising at least an increase in battery pack temperature; a system controller coupled to said isolation resistance monitoring subsystem and to said secondary effect monitoring system, wherein said system controller detects when said electrical isolation resistance falls below a preset value, wherein said electrical isolation resistance falling below said preset value is indicative of said cell failure; and a cell failure response subsystem coupled to said system controller, wherein said cell failure response subsystem performs a first preset response upon receipt of a first control signal from said system controller, said first control signal transmitted by said system controller when said electrical isolation resistance falls below said preset value, provided that said secondary effect is detected by said secondary effect monitoring system, and wherein said cell failure response subsystem performs a second preset response upon receipt of a second control signal from said system controller, said second control signal transmitted by said system controller when said electrical isolation resistance falls below said preset value, provided that said secondary effect is not detected by said secondary effect monitoring system. |
