Battery manager chip with connections for redundant backup battery
December 21, 2010. 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 3816768 Volatile memory support system Controlled battery charger system Control of power supply Low-power battery backup circuit for semiconductor memory Automatic protective circuit system for emergency lights Memory safeguard device for microprocessor Method for the cyclical trickle charging of a chargeable battery intended for emergency operation Universal battery charging system and a method Backup battery switching circuitry for a microcomputer or a microprocessor InventorApplicationNo. 631719 filed on 12/21/1990US Classes:320/163, Having solid-state control device307/66, Storage battery or accumulator320/134, With battery or cell condition monitoring (e.g., for protection from overcharging, heating, etc.)320/150, With thermal condition detection365/229Standby powerExaminersPrimary: Stephan, Steven L.Assistant: Peckman, Kristine Attorney, Agent or FirmInternational ClassH02J 007/04AbstractA battery management chip which controls charging and discharging currents of a rechargeable battery. In a portable module, the battery manager chip controls the charging and discharging of the rechargeable battery which powers the whole module, and is therefore connected directly to the battery and to the source of charging current. The chip is also connected to draw very small amounts of current from a third, stable battery, preferably a lithium battery, which is not necessarily rechargeable. | |
