05880576 is referenced by 7 patents and cites 7 patents.

A charging apparatus for charging a rechargeable battery, such as a Lithium-ion type battery. The charging apparatus is provided with a first current stabilized unit and a second current stabilized unit for stabilizing two different levels of electric current. The first current stabilized unit provides a relatively large electric current for charging the battery package. The second current stabilized unit provides a relatively small electric current for charging the battery package. A switching unit is provided for switching a connection of the first and second current stabilized units to provide current to the rechargeable battery. A detection unit is provided for detecting an electric voltage at terminals of the rechargeable battery. The detection unit controls the switching unit so as to switch connection of the first and second current stabilized units to provide current to the rechargeable battery based on the detected voltage. A management unit may further store charging conditions for further controlling the switching unit.

Title
Charging apparatus for controlling supplement of electric current to a rechargeable battery
Application Number
8/803860
Publication Number
5880576
Application Date
February 21, 1997
Publication Date
March 9, 1999
Inventor
Shinji Nagai
Kanagawa
JP
Agent
Oblon Spivak McClelland Maier & Neustadt P C
Assignee
Ricoh Company
JP
IPC
H02J 7/00
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