Switched capacitor system for automatic battery equalization
May 20, 2016. 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 ReferencesCharging system and method for multicell storage batteries DC Power system having battery voltage equalizer circuit Device for balancing parallel strings Current balancing for battery strings Multiple voltage battery charge balancing and load protecting device Battery equalization circuit for a dual voltage charging system Battery charger for charging a plurality of batteries Non-dissipative battery charger equalizer Battery voltage equalizer circuit Patent #: 5528122 InventorsAssigneeApplicationNo. 650490 filed on 05/20/1996US Classes:180/65.8, With electronic devices (logic gates, semi-conductors, vacuum tubes, etc.) in control circuit307/9.1, VEHICLE MOUNTED SYSTEMS307/77, Series-connected sources320/104, Vehicle battery charging320/118With discharge of cells or batteriesExaminersPrimary: Wong, Peter S.Assistant: Shin, K. Attorney, Agent or FirmInternational ClassesH02J 007/00H01M 010/44 H01M 010/46 AbstractA switched capacitor system for automatic battery equalization can be used with series coupled batteries as well as primary and backup batteries which are alternately couplable to a load. The system includes a plurality of capacitors and a plurality of switching elements. Each of the capacitors is switched back and forth between a predetermined pair of batteries for the purpose of transferring charge therebetween and equalizing the output voltages of each of the batteries in the pair. The capacitors and switching elements can be configured in a modular fashion. Multiple modules can be used, for example, in combination with multiple batteries which are series coupled to one another. The system could be used in electric vehicles and in battery back-up systems of all types. | |
