Method and device for charge exchange between a plurality of energy stores or converters connected in series
Patent 5821729 Issued on October 13, 1998. Estimated Expiration Date: 
December 23, 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.
December 23, 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 ReferencesMethod of equalizing the voltages of the individual cells of storage batteries DC Power system having battery voltage equalizer circuit Method of charging and discharging battery and power source apparatus adopting the same Battery voltage equalizer circuit Charge equalization of series connected cells or batteries Magnetically balanced multi-output battery charging system Patent #: 5646504 InventorsAssigneeApplicationNo. 765608 filed on 12/23/1996US Classes:320/126, PARALLEL CONNECTED BATTERIES307/72, Diverse or unlike electrical characteristics307/77, Series-connected sources320/103, ONE CELL OR BATTERY CHARGES ANOTHER320/118With discharge of cells or batteriesExaminersPrimary: Wong, Peter S.Assistant: Law, Patrick B. Attorney, Agent or FirmForeign Patent References
International ClassesH01M 010/44H01M 010/46 Foreign Application Priority Data1994-06-29 DEAbstractA method and apparatus for charge exchange between a plurality of series-connected identical energy storage devices. At least one electric storage device is alternately at a given rate connected in parallel to the energy storage devices. The electric storage device is formed from a transformer winding which is charged by the energy storage devices. Transformer windings are connected in parallel with alternating polarity at the given rate to one of the identical energy storage devices so that all the identical energy storage devices are individually connected in parallel at each step to a transformer winding, thus facilitating direct flow of energy from one of the high-grade energy storage devices to a low-charged energy storage device. The method and apparatus may be used to balance the charges of energy storage devices such as accumulators and of energy converters such as fuel cells.Other References
Field of SearchHaving series-parallel connectable windings | |
