Apparatus for charge exchange among a plurality of series connected energy accumulators or energy converters
Patent 5814970 Issued on September 29, 1998. Estimated Expiration Date: 
January 29, 2017. 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.
January 29, 2017. 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 Method of charging and discharging battery and power source apparatus adopting the same Distributed multi-module battery equalization Bidirectional current pump for battery charge balancing Patent #: 5631534 InventorAssigneeApplicationNo. 793088 filed on 01/29/1997US Classes:320/118, With discharge of cells or batteries320/119, With individual charging of plural batteries or cells320/122Bypassable battery cellExaminersPrimary: Tso, Edward H.Attorney, Agent or FirmForeign Patent References
International ClassH01M 010/46Foreign Application Priority Data1994-07-30 DEAbstractA method and apparatus for allowing charge exchange among a plurality of energy accumulators of the same type which are interconnected in series. At least one electric accumulator is cyclically and alternatively connected in parallel to the energy accumulators. Each electric accumulator consists of a capacitive element charged by the energy accumulators. The electric accumulators are also each cyclically connected in parallel to one of the energy accumulators, so that during each phase of the cycle al energy accumulators of the same type are individually connected in parallel to an electric accumulator thereby establishing a direct power flow from higher voltage accumulators to lower voltage accumulators. The method and apparatus may be used for equalizing the charge of energy accumulators, and energy converters.Other References
Field of SearchONE CELL OR BATTERY CHARGES ANOTHERSERIALLY CONNECTED BATTERIES OR CELLS Switchable to parallel connection With discharge of cells or batteries With individual charging of plural batteries or cells Having variable number of cells or batteries in series Bypassable battery cell CAPACITOR CHARGING OR DISCHARGING With amplifier connected to or between current paths | |
