Apparatus and method for charging a plurality of batteries using a combination of individual and parallel connections
October 2, 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 ReferencesBattery charging apparatus Automatic switching arrangement for two batteries which are charged in parallel and discharged in series Battery charging system System for determining battery charge states and charging sequence for a battery charger Method and apparatus for charging a nickel-cadmium battery Automatic continuous rapid charging circuit for rechargeable batteries, and method thereof Battery booster system Method for charging a secondary battery and charger used therefor using constant current and constant voltage Patent #: 5637981 InventorAssigneeApplicationNo. 720619 filed on 10/02/1996US Classes:320/117, Switchable to parallel connection320/162With detection of current or voltage amplitudeExaminersPrimary: Wong, Peter S.Assistant: Toatley, Gregory J. Jr. Attorney, Agent or FirmInternational ClassesH02J 007/021H01M 010/44 Foreign Application Priority Data1995-10-04 JPAbstractBattery charging time is shortened. The control circuit 6 controls the switches 7-1 and 7-2 to charge the batteries 21-1 and 21-2 at a constant current one by one. Subsequently the batteries are charged one by one at a constant voltage until the charging current decreases to 1/2 a prescribed current. Next, the control circuit 6 turns the switches 7-1 and 7-2 on to charge simultaneously the batteries 21-1 and 21-2 in a parallel connection. After the charging current decreases to a prescribed current value, the batteries are charged at a constant voltage for a prescribed time. Then charging is completed. | |
