Patents by Inventor Mikhail M. Podrazhansky

Mikhail M. Podrazhansky has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Equalization of series-connected cells of a battery using controlled charging and discharging pulses
    Patent number: 5889385
    Abstract: A charge pulse (200A) is applied to the battery (B). The open circuit voltage of each cell (C1-CN) is then measured during a first rest period (210A). A depolarization pulse (220A) is then applied to the battery. The open circuit voltage of each cell is then measured during a second rest period (210B). The open circuit voltages for the first and second rest periods for each cell are compared to yield a voltage difference (DELTA Y). This voltage difference is then compared with a threshold voltage (V THRESHOLD). If the voltage difference is greater than the threshold voltage then the cell is being charged too rapidly, or is being overcharged, so one or more of the charge cycle parameters are adjusted.
    Type: Grant
    Filed: August 19, 1997
    Date of Patent: March 30, 1999
    Assignee: Advanced Charger Technology, Inc.
    Inventors: Yury M. Podrazhansky, Mikhail M. Podrazhansky, Yefim Y. Kusharskiy