Patents by Inventor Hector M. Atehortua

Hector M. Atehortua 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).

  • Method for determining state of charge of lead-acid batteries of various specific gravities
    Patent number: 7705564
    Abstract: In accordance with various embodiments, there is a method for determining the state of charge of a battery. Various embodiments include the steps of determining the specific gravity of the battery and measuring an open circuit voltage of the battery at rest. The open circuit voltage at rest can be used to determine the battery state of charge from a correlation function dependent on the battery specific gravity.
    Type: Grant
    Filed: July 16, 2008
    Date of Patent: April 27, 2010
    Assignee: Honeywell International Inc.
    Inventors: Hector M. Atehortua, Steven Hoenig, Thirumalai G. Palanisamy, Harmohan N. Singh
  • Method for determining capacity of lead-acid batteries of various specific gravities
    Patent number: 7471090
    Abstract: In accordance with various embodiments, there is a method for determining the capacity of a battery. Various embodiments include applying a predetermined current ramp to a fully charged lead-acid battery while measuring a battery terminal voltage. An Iup can be determined, where the Iup is a transition from charging to overcharging. A specific gravity of the lead-acid battery can also be determined. The capacity of the lead-acid battery can then be determined from the Iup using a correlation function that describes the relationship of the Iup to the capacity, where the correlation function depends on the specific gravity of the lead-acid battery.
    Type: Grant
    Filed: March 31, 2005
    Date of Patent: December 30, 2008
    Assignee: Honeywell International Inc.
    Inventors: Hector M. Atehortua, Steven Hoenig, Thirumalai G. Palanisamy, Harmohan N. Singh
  • METHOD FOR DETERMINING STATE OF CHARGE OF LEAD-ACID BATTERIES OF VARIOUS SPECIFIC GRAVITIES
    Publication number: 20080272790
    Abstract: In accordance with various embodiments, there is a method for determining the state of charge of a battery. Various embodiments include the steps of determining the specific gravity of the battery and measuring an open circuit voltage of the battery at rest. The open circuit voltage at rest can be used to determine the battery state of charge from a correlation function dependent on the battery specific gravity.
    Type: Application
    Filed: July 16, 2008
    Publication date: November 6, 2008
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: HECTOR M. ATEHORTUA, STEVEN HOENIG, THIRUMALAI G. PALANISAMY, HARMOHAN N. SINGH
  • Method for determining state of charge of lead-acid batteries of various specific gravities
    Patent number: 7429436
    Abstract: In accordance with various embodiments, there is a method for determining the state of charge of a battery. Various embodiments include the steps of determining the specific gravity of the battery and measuring an open circuit voltage of the battery at rest. The open circuit voltage at rest can be used to determine the battery state of charge from a correlation function dependent on the battery specific gravity.
    Type: Grant
    Filed: January 31, 2005
    Date of Patent: September 30, 2008
    Assignee: Honeywell International Inc.
    Inventors: Hector M. Atehortua, Steven Hoenig, Thirumalai G. Palanisamy, Harmohan N. Singh
  • Capacity degredation in a lead acid battery method and apparatus
    Patent number: 7345453
    Abstract: In accordance with the invention, there is a battery defect detection method comprising applying a current ramp to a battery; determining a first time (t1) when a current of the battery reaches a maximum current (Ipeak), and determining a second time (t2) when a terminal voltage of the battery reaches a maximum voltage (Vpeak). The method also includes determining a differential (d), wherein (d)=/(t1)?(t2)/, and wherein (d) corresponds to a magnitude of defects in the battery.
    Type: Grant
    Filed: March 1, 2005
    Date of Patent: March 18, 2008
    Assignee: Honeywell International, Inc.
    Inventors: Hector M. Atehortua, Steven Hoenig, Thirumalai G. Palanisamy, Harmohan N. Singh
  • Method and apparatus for determining the available energy of a lithium ion battery
    Patent number: 7248022
    Abstract: In accordance with various embodiments, there is a method for determining the available energy of a battery. Various embodiments include the steps of applying an increasing current to the battery and measuring a response voltage of the battery when the increasing current is applied to the battery.
    Type: Grant
    Filed: June 4, 2004
    Date of Patent: July 24, 2007
    Assignee: Honeywell International, Inc.
    Inventors: Thirumalai G. Palanisamy, Harmohan N. Singh, Hector M. Atehortua, Steven Hoenig
  • Method and apparatus for automatic determination of lead-acid battery specific gravity
    Patent number: 7224168
    Abstract: In accordance with various embodiments, there is a method for determining the specific gravity of a battery. Various embodiments include the steps of applying an increasing current ramp to a battery and measuring a response voltage of the battery when the increasing current ramp is applied to the battery. When the current ramp reaches a predetermined current a decreasing current is supplied to the battery and the battery's voltage response is measured. The specific gravity of the battery can be determined based on the voltage response of the battery to the applied current ramp.
    Type: Grant
    Filed: June 4, 2004
    Date of Patent: May 29, 2007
    Assignee: Honeywell International, Inc.
    Inventors: Harmohan N. Singh, Steven Hoenig, Thirumalai G. Palanisamy, Hector M. Atehortua