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US Patent 6064178 - Battery charge balancing system having parallel switched energy storage elements
US Patent Issued on May 16, 2000
Estimated Patent Expiration Date:
May 7, 2018Estimated 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.
Estimated Patent Expiration Date:
May 7, 2018Estimated 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.AbstractA method for balancing charge of a plurality of series-connected batteries includes alternately coupling each of a plurality of energy storage circuits across a respective one of the batteries and in parallel with each other. A charge balancing system comprises a plurality of series connected batteries and a plurality of energy storage circuits. The system also includes switching circuitry for alternately connecting each energy storage circuit across a respective one of the batteries and in parallel with each other. The switching circuitry can also be controlled to couple a plurality of the energy storage circuits across a relatively-highly-charged battery and then across a relatively-weakly-charged battery. | InventorAssigneeApplicationNo. 073943 filed on 05/07/1998US Classes:320/117, Switchable to parallel connection320/118With discharge of cells or batteriesField of Search320/116, SERIALLY CONNECTED BATTERIES OR CELLS320/117, Switchable to parallel connection320/118, With discharge of cells or batteries320/119, With individual charging of plural batteries or cells320/120, Having variable number of cells or batteries in series320/122, Bypassable battery cell320/126, PARALLEL CONNECTED BATTERIES320/127, BATTERY OR CELL DISCHARGING320/128, With charging320/137BATTERY OR CELL CHARGINGExaminersPrimary: Tso, Edward H.Attorney, Agent or FirmUS Patent References3202900, 3980940, Battery equalizing systemIssued on: 09/14/1976 Inventor: Mabuchi , et al.3997830, Satellite battery reconditioning system and method Issued on: 12/14/1976 Inventor: Newell , et al.4079303, Charging system and method for multicell storage batteries Issued on: 03/14/1978 Inventor: Cox4238721, System and method for charging electrochemical cells in series Issued on: 12/09/1980 Inventor: DeLuca , et al.4614905, Charging regulator Issued on: 09/30/1986 Inventor: Petersson , et al.4616170, Arrangement and method for operating an electrochemical storage device Issued on: 10/07/1986 Inventor: Urstoger5003244, Battery charger for charging a plurality of batteries Issued on: 03/26/1991 Inventor: Davis, Jr.5063340, Capacitive power supply having charge equalization circuit Issued on: 11/05/1991 Inventor: Kalenowsky5153496, Cell monitor and control unit for multicell battery Issued on: 10/06/1992 Inventor: LaForge5177425, Method of charging and discharging battery and power source apparatus adopting the same Issued on: 01/05/1993 Inventor: Goto5283512, Charge balancing of batteries during charging Issued on: 02/01/1994 Inventor: Stadnick, et al.5387857, Battery charging apparauts Issued on: 02/07/1995 Inventor: Honda, et al.5488282, System and method for reconditioning spacecraft battery Issued on: 01/30/1996 Inventor: Hayden, et al.5498950, Battery monitoring, charging and balancing apparatus Issued on: 03/12/1996 Inventor: Ouwerkerk5504415, Method and apparatus for automatic equalization of series-connected batteries Issued on: 04/02/1996 Inventor: Podrazhansky, et al.5565759, Smart battery providing battery life and recharge time prediction Issued on: 10/15/1996 Inventor: Dunstan5578914, Charging system for multi-cell battery Issued on: 11/26/1996 Inventor: Morita5592067, Distributed multi-module battery equalization Issued on: 01/07/1997 Inventor: Peter, et al.5594320, Charge equalization of series connected cells or batteries Issued on: 01/14/1997 Inventor: Pacholok, et al.5631534, Bidirectional current pump for battery charge balancing Issued on: 05/20/1997 Inventor: Lewis5710504, Switched capacitor system for automatic battery equalization Issued on: 01/20/1998 Inventor: Pascual, et al.5814970, Apparatus for charge exchange among a plurality of series connected energy accumulators or energy converters Issued on: 09/29/1998 Inventor: Schmidt5821729Method and device for charge exchange between a plurality of energy stores or converters connected in series Issued on: 10/13/1998 Inventor: Schmidt, et al. Foreign Patent References
International ClassesH01M 010/44H01M 010/46 |
