Patents by Inventor Neville J. Arlidge

Neville J. Arlidge 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).

  • Traction motor current control battery monitoring system
    Patent number: 5107191
    Abstract: A microprocessor based electric vehicle traction battery monitoring system evaluates the state of charge, interfaces with a traction motor control system, and controls recharging. The state of charge is evaluated during the first part of discharge by integrating the current after compensating it for rate of discharge and during the last part of discharge by dividing the battery into sub-packs and evaluating the state of charge from the lowest sub-pack voltage compensated for polarization voltage. The charge storage capacity is also calculated from the lowest sub-pack voltage. The maximum traction motor current is progressively limited during the last part of discharge. During charging, the charge withdrawn is replaced while progressively reducing the charging current and the battery is then charged at a constant current until the rate of rise of the lowest sub-pack voltage falls below a fixed level.
    Type: Grant
    Filed: September 30, 1983
    Date of Patent: April 21, 1992
    Assignee: Lucas Industries, Ltd.
    Inventors: Michael W. Lowndes, Derek S. Adams, Neville J. Arlidge
  • Battery monitoring systems
    Patent number: 4484130
    Abstract: A microprocessor based electric vehicle traction battery monitoring system evaluates the state of charge, interfaces with a traction motor control system, and controls recharging. The state of charge is evaluated during the first part of discharge by integrating the current after compensating it for rate of discharge and during the last part of discharge by dividing the battery into sub-packs and evaluating the state of charge from the lowest sub-pack voltage compensated for polarization voltage. The charge storage capacity is also calculated from the lowest sub-pack voltage. The maximum traction motor current is progressively limited during the last part of discharge. During charging, the charge withdrawn is replaced while progressively reducing the charging current and the battery is then charged at a constant current until the rate of rise of the lowest sub-pack voltage falls below a fixed level.
    Type: Grant
    Filed: September 30, 1983
    Date of Patent: November 20, 1984
    Assignee: Lucas Industries Limited
    Inventors: Michael W. Lowndes, Derek S. Adams, Neville J. Arlidge
  • Battery state of charge evaluator system
    Patent number: 4433278
    Abstract: A microprocessor based electric vehicle traction battery monitoring system evaluates the state of charge, interfaces with a traction motor control system, and controls recharging. The state of charge is evaluated during the first part of discharge by integrating the current after compensating it for rate of discharge and during the last part of discharge by dividing the battery into sub-packs and evaluating the state of charge from the lowest sub-pack voltage compensated for polarization voltage. The charge storage capacity is also calculated from the lowest sub-pack voltage. The maximum traction motor current is progressively limited during the last part of discharge. During charging, the charge withdrawn is replaced while progressively reducing the charging current and the battery is then charged at a constant current until the rate of rise of the lowest sub-pack voltage falls below a fixed level.
    Type: Grant
    Filed: November 18, 1980
    Date of Patent: February 21, 1984
    Assignee: Lucas Industries Limited
    Inventors: Michael W. Lowndes, Derek S. Adams, Neville J. Arlidge