Circuit for protecting storage cells
Patent 4303877 Issued on December 1, 1981. Estimated Expiration Date: 
May 1, 1999. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 1, 1999. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3102222 3221239 3343058 3348117 3393355 3496442 Multi-cell battery protection system Patent #: 4061955 InventorAssigneeApplicationNo. 06/035270 filed on 05/01/1979US Classes:320/122, Bypassable battery cell320/132, With state-of-charge detection320/134With battery or cell condition monitoring (e.g., for protection from overcharging, heating, etc.)ExaminersPrimary: Hickey, Robert J.Attorney, Agent or FirmInternational ClassesH02J 7/00 (20060101)H01M 10/44 (20060101) H01M 10/42 (20060101) Foreign Application Priority Data1978-05-05 DEAbstractBattery formed of electrochemical storage cells of the alkali metal and chalcogen type in series or groups of several parallel-connected storage cells connected in series. To assure uniform charging and discharging of the storage cells, each series-connected cell or each group of parallel-connected cells, has parallel-connected to the cell or group of cells, a protective circuit. Upon reaching a given maximum charge or discharge, a cell or group of cells, the circuit acts to bridge i.e. short the cell or group of cells which has reached a maximum charge or discharge, and prevent further charge or discharge of such cell or group of cells. The circuit is functionally connected to a switch which is conductively connectible directly to the negative and positive electrodes of the cells and to the electric terminals. The protective circuit is directly connected to both terminals and the storage cell to at least one of the two terminals via the switch. | |
