Non-dissipative battery charger equalizer
June 21, 2013. 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 References 3237078 Dual voltage charging system Charging system and method for multicell storage batteries Dual output battery charging system System and method for charging electrochemical cells in series Charging regulator Motor vehicle electrical system including a combined starter/generator Charging device Polyphase alternator and dual voltage battery charging system for multiple voltage loads Battery equalization circuit for a dual voltage charging system InventorApplicationNo. 080898 filed on 06/21/1993US Classes:320/121, Switchable cells (e.g., for voltage regulation, etc.)320/124, SEQUENTIAL CHARGING OR DISCHARGING OF BATTERIES OR CELLS320/163Having solid-state control deviceExaminersPrimary: Wong, Peter S.Assistant: Nappi, Robert E. Attorney, Agent or FirmInternational ClassH01M 010/46AbstractA battery charger is disclosed for recharging reusable batteries in a manner that prevents overcharging of the same. The charger includes a voltage source and non-dissipative shunt arrangement that can be customized to charge any number of batteries. The charger may be a current limiting power supply that is controlled by the voltage or charge state of the batteries being recharged. The non-dissipative shunt includes a pair of transistors for each pair of batteries and an inductor placed one end between the battery pair and another end between the transistor pair. An oscillator, having two phases of equal, but opposite phase, is used to control each transistor to apply charge to a given battery during one phase and then to allow the charge to equalize between the battery pair during the second phase. The equalization is continued until both batteries reach a full charge without overcharging any one battery. | |
