Harmohan M Singh, 7298 Haypath Rd, Bethpage, NY 11714

6366054, Apr 2, 2002

May 2, 2001

09/847801

Steven Hoenig - Staten Island NY
Harmohan Singh - Rockaway NJ
Thirumalai G. Palanisamy - Morristown NJ

Honeywell International Inc. - Morristown NJ

H02J 700

320132, 324427

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 first type algorithm is developed to correlate the OCV in a fully rested condition (OCV ) to the state of charge at which that measurement is taken. A second type algorithm is developed that predicts a final settling OCV of a battery (OCV ), based on the set of parameters of OCV, rate of change of OCV, and battery case temperature, acquired during the settling period of a battery not at rest. To determine the SOC of a battery being tested that is in the fully settled state the measured OCV is applied to the first type algorithm. To determine the SOC of a battery that has not fully settled, the data of the OCV, rate of change of OCV and battery temperature is applied to a second type algorithm to determine OCV and the OCV value is used in the first type algorithm to determine SOC.

6417646, Jul 9, 2002

May 22, 2001

09/862228

Richard B. Huykman - Montville NJ
Harmohan Singh - Rockaway NJ

Honeywell International Inc. - Morristown NJ

H01M 1040

320122

A circuit (M) to monitor and protect individual cells ( - -n) of a multi-cell battery ( ) from over-charge and acquire data to be used to determine various characteristics of the cell state-of-health is connected to each individual cell ( ) of a multi-cell battery as the battery is being charged. The circuit includes a portion (Q -R ) to bypass charging current from the cell, this portion being variably pre-settable to bypass current above a desired high voltage (V-By) limit for the cell. As the battery is being charged, the bypass circuit will shunt current around a cell when the preset high voltage level is exceeded, thus preventing any damage to the cell. The circuit (Q ) can be operated to produce a pulse of current and the change in voltage of the monitored cell in response to the change in current, dV/dl, can be used to determine the cell internal resistance. The cell polarization resistance also can be determined. The data acquired can be used to determine factors relating to the cell state of charge (SOC) and its state of health.

6586130, Jul 1, 2003

Nov 22, 2000

09/721003

James V. Guiheen - Madison NJ
Harmohan Singh - Rockaway NJ
Thirumalai G. Palanisamy - Morristown NJ

Honeywell International Inc. - Morristown NJ

H01M 1044

429 50, 429 92

Computer-assisted methods for determining the state of charge of a specific lithium ion battery, without the need for charging and discharging the battery, by utilizing look-up tables or algorithms which store the relationships of state of charge to open-circuit voltage or to ramp-peak current, or to both for that type of specific lithium-ion battery to determine the state of charge for that specific lithium-ion battery.

6618681, Sep 9, 2003

May 2, 2001

09/847823

Steven Hoenig - Staten Island NY
Harmohan Singh - Rockaway NJ
Thirumalai G. Palanisamy - Morristown NJ
Margaret Eagan - Boonton Township NJ

Honeywell International Inc. - Morristown NJ

G06F 1900

702 63, 702 31, 702 85, 702182, 320127, 320130, 320136, 324426, 324430, 324433, 700 52, 700 89, 700108, 307 18, 307 24, 307 46

A method of predicting by non-invasive testing the available energy of a battery at any state of charge by acquiring data of the parameters of internal resistance (IR), open circuit voltage (OCV) and temperature (T), the points of voltage and current of the slope on a positive current ramp of V and I at the transition from charge to overcharge and on a negative current ramp of V and I at the transition from overcharge to charge for a plurality of batteries. Next an algorithm in the form of a linear equation is developed using this data. The available energy of a battery under test is predicted by acquiring from it the numerical data values of these parameters and applying them to the algorithm.

6774636, Aug 10, 2004

Jan 23, 2003

10/349847

James V. Guiheen - Madison NJ
Harmohan Singh - Rockaway NJ
Thirumalai G. Palanisamy - Morristown NJ

Honeywell International Inc. - Morristown NJ

G01N 27416

324429, 320132, 341106

Computer-assisted methods for determining the state of charge of a specific lithium ion battery, without the need for charging and discharging the battery, by utilizing look-up tables or algorithms which store the relationships of state of charge to open-circuit voltage or to ramp-peak current, or to both for that type of specific lithium-ion battery to determine the state of charge for that specific lithium-ion battery.

7345453, Mar 18, 2008

Mar 1, 2005

11/067788

Hector M. Atehortua - North Bergen NJ, US
Steven Hoenig - Staten Island NY, US
Thirumalai G. Palanisamy - Morristown NJ, US
Harmohan N. Singh - Rockaway NJ, US

Honeywell International, Inc. - Morristown NJ

H02J 7/00

320134, 324426

In accordance with the invention, there is a battery defect detection method comprising applying a current ramp to a battery; determining a first time (t) when a current of the battery reaches a maximum current (I), and determining a second time (t) when a terminal voltage of the battery reaches a maximum voltage (V). The method also includes determining a differential (d), wherein (d)=/(t)−(t)/, and wherein (d) corresponds to a magnitude of defects in the battery.

7429436, Sep 30, 2008

Jan 31, 2005

11/046228

Hector M. Atehortua - North Bergen NJ, US
Steven Hoenig - Staten Island NY, US
Thirumalai G. Palanisamy - Morristown NJ, US
Harmohan N. Singh - Rockaway NJ, US

Honeywell International Inc. - Morristown NJ

H01M 6/14

429302, 320132, 320137, 320151

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.

7471090, Dec 30, 2008

Mar 31, 2005

11/094444

Hector M. Atehortua - North Bergen NJ, US
Steven Hoenig - Staten Island NY, US
Thirumalai G. Palanisamy - Morristown NJ, US
Harmohan N. Singh - Rockaway NJ, US

Honeywell International Inc. - Morristown NJ

G01N 27/416

324427, 320132, 324426

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 Ican be determined, where the Iis 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 Iusing a correlation function that describes the relationship of the Ito the capacity, where the correlation function depends on the specific gravity of the lead-acid battery.