Lithium polymer battery charger methods and apparatus
January 11, 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 and apparatus for conditioning of nickel-cadmium batteries System and method for charging electrochemical cells in series Charging regulator Method and apparatus for determining the state-of-charge of batteries particularly lithium batteries Method of increasing the useful life of rechargeable lithium batteries Switching power supply and method Low voltage power down logic control circuit Battery charge apparatus controlled by detecting charge current with constant charge voltage Thermal switch for battery protection Lithium battery deactivator InventorsAssigneeApplicationNo. 582527 filed on 01/11/1996US Classes:320/120, Having variable number of cells or batteries in series320/117Switchable to parallel connectionExaminersPrimary: Wong, Peter S.Assistant: Toatley, Gregory J. Jr. Attorney, Agent or FirmInternational ClassH02M 010/44AbstractLithium polymer battery charger methods for charging a plurality of equal charge point lithium polymer battery cells prevent overcharging of any cell, whether the cells are arranged in a series stack or are arranged in parallel. When the cells are connected in a series stack, a power supply is connected to the series stack to apply a charge current to the series stack. The state of charge of each cell in the stack is monitored. Information that the state of charge of any cell is approaching full charge is used to control the charge current and to prevent overcharging of any cell. | |
