1
Thirumalai G Palanisamy: Automotive battery status monitor. AlliedSignal, Ernest D Buff, Gerhard H Fuchs, January 25, 1994: US05281919 (212 worldwide citation)

A vehicle storage battery is monitored to determine battery capacity, state of charge and certain fault conditions. The ambient temperature, battery voltage alternator/regulator output voltage and current to and from the battery are continuously measured. Current voltage (I-V) data is analyzed to de ...


2
Thirumalai G Palanisamy: Method for monitoring automotive battery status. Allied Signal, Ernest D Buff, Gerhard H Fuchs, Richard C Stewart, June 26, 1990: US04937528 (203 worldwide citation)

A vehicle storage battery is monitored to determine battery capacity, state of charge and certain fault conditions. The ambient temperature, battery voltage alternator/regulator output voltage and current to and from the battery are continuously measured. Current voltage (I-V) data is analyzed to de ...


3
Bernard P Gollomp, Thirumalai G Palanisamy, Douglas Vernick: System and method for monitoring a vehicle battery. AlliedSignal, Loria B Yeadon, July 23, 2002: US06424157 (199 worldwide citation)

A system and method for monitoring and reporting on the condition of a vehicle battery which measures battery voltage and current drain during engine start, and computes the battery dynamic internal resistance (IR) and dynamic polarization resistance (PR) from these quantities. Also, the quiescent v ...


4
Thirumalai G Palanisamy, Stuart E Mendelson, Divna Cipris, Ronald R Chance: Apparatus and method for charging and testing batteries. Allied Corporation, Richard C Stewart, Gerhard H Fuchs, May 17, 1988: US04745349 (164 worldwide citation)

This invention is directed to a methjod for charging a rechargeable battery. In this method, the open voltage of the battery is measured and the number of cells estimated. The state of charge of the battery is then tested by supplying a controllably varying charging current to the battery and testin ...


5
Thirumalai G Palanisamy: Method for monitoring aircraft battery status. Allied Signal, Ernest D Buff, Gerhard H Fuchs, Richard C Stewart, November 6, 1990: US04968942 (148 worldwide citation)

An aircraft storage battery is monitored to determine battery capacity, state of charge and certain fault conditions. The ambient temperature, battery voltage on-board charger output voltage and current to and from the battery are continuously measured. Current voltage (I-V) data is analyzed to dete ...


6
Thirumalai G Palanisamy, Stuart E Mendelson: Apparatus and method for charging and testing batteries. Allied Signal, Richard C Stewart, Gerhard H Fuchs, October 24, 1989: US04876495 (146 worldwide citation)

This invention relates to a method for charging a rechargeable battery especially lead-acid batteries. In this method, the open circuit voltage of the battery is measured and the minimum number of cells is estimated from this value. The battery is then charged at any charge rate and at a constant cu ...


7
Bernard P Gollomp, Thirumalai G Palanisamy, John Kacerek: Measurement of current in a vehicle using battery cable as a shunt. AlliedSignal, Loria B Yeadon, September 4, 2001: US06285191 (54 worldwide citation)

Current flowing into and out of a battery installed in a vehicle (V) with the required cable between one of the battery terminals and a reference point on the vehicle is determined by measuring the voltage across the cable and computing the current from the digital value of the measured current. The ...


8
Steven Hoenig, Harmohan Singh, Thirumalai G Palanisamy: Method for determining state of charge of a battery by measuring its open circuit voltage. Honeywell International, Loria B Yeadon, April 2, 2002: US06366054 (53 worldwide citation)

A method for determining the state of charge (SOC) of a battery by measuring its open circuit voltage (OCV) either with the battery in a fully rested state of chemical and electrical equilibrium or an active state during a period in which the battery settles after charge or discharge is stopped. A f ...


9
Thirumalai G Palanisamy: Method and apparatus for charging and testing batteries. Allied Signal, Ernest D Buff, Gerhard H Fuchs, September 17, 1991: US05049803 (51 worldwide citation)

An apparatus for charging and testing a rechargeable battery is adapted to determine certain conditions, including defects and characteristics, of the battery. The apparatus detects defects caused by sulfated cells, short circuited cells, and mismatched cells, and determines battery voltage, capacit ...


10
John Tregidgo, Francis J Regina, Arthur T Walsh, Ronald P Rohrbach, Thirumalai G Palanisamy, Gordon W Jones, Gilbert C Reynolds: Device for treating and conditioning engine coolant. AlliedSignal, Ken C Decker, Leo H McCormick Jr, July 25, 1995: US05435346 (48 worldwide citation)

A device for treating and conditioning engine coolant for use with an internal combustion engine includes a housing having an inlet and outlet and a filtering media and container carrying coolant treatment material located within the housing. Coolant passes through the filter, and then is exposed to ...