Patent ID: 7573235
Filing Date: 2009-08-11
Classification: H02J

Abstract:
1. A battery charging apparatus, said apparatus comprising: a programmable current source for providing a charging current to at least one rechargeable battery; a charging circuit in parallel electrical connection to said programmable current source, wherein said charging circuit: detects that said at least one rechargeable battery is in operational electrical communications with said battery charging apparatus; determines whether said charging circuit is actively charging said at least one rechargeable battery; and determines the magnitude of a bypass current bypassing said at least one rechargeable battery; a controller comprised of a power reduction algorithm for controlling the magnitude of said charging current provided by said programmable current source, wherein said controller is in electrical communication with said charging circuit and said programmable current source, and wherein said power reduction algorithm analyzes: (a) the magnitude of said charging current; (b) whether said charging circuit is actively charging said at least one rechargeable battery; and (c) the magnitude of said bypass current bypassing said at least one rechargeable battery; wherein, based on said power reduction algorithm analysis, said controller adjusts the magnitude of said charging current in response to changes in said bypass current; and at least one battery charging slot in electrical communication with said programmable current source, wherein each of said at least one battery charging slot is capable of operationally holding at least one of said at least one rechargeable battery and enabling each of said at least one rechargeable battery to receive said charging current from said programmable current source.