Patents by Inventor Satish Ketkar
Satish Ketkar 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).
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Patent number: 9786967Abstract: A battery pack is provided. The battery pack includes first and second temperature sensors that are disposed in first and second interior spaces, respectively. The first temperature sensor generates a first signal indicative of a first temperature level of the battery cell. The second temperature sensor generates a second signal indicative of a second temperature level of the DC-DC voltage converter. The battery pack further includes a microprocessor that determines a first desired operational speed value of the electric fan based on the first temperature level, and a second desired operational speed value of the electric fan based on the second temperature level. The microprocessor selects the first desired operational speed value if the first desired operational speed value is greater than the second desired operational speed value.Type: GrantFiled: May 27, 2014Date of Patent: October 10, 2017Assignee: LG Chem, Ltd.Inventors: Alexander Jeffrey Smith, Richard McCormick, Satish Ketkar, Robert Merriman, Heekook Yang
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Patent number: 9722286Abstract: A battery pack is provided. The battery pack includes first and second temperature sensors that are disposed in first and second interior spaces, respectively. The first temperature sensor generates a first signal indicative of a first temperature level of the battery cell. The second temperature sensor generates a second signal indicative of a second temperature level of the DC-DC voltage converter. The battery pack further includes a microprocessor that determines a first fan speed percentage value of the electric fan based on the first temperature level, and a second fan speed percentage value of the electric fan based on the second temperature level. The microprocessor selects the first fan speed percentage value if the first fan speed percentage value is greater than the second fan speed percentage value.Type: GrantFiled: September 18, 2014Date of Patent: August 1, 2017Assignee: LG Chem, Ltd.Inventors: Alexander Jeffrey Smith, Richard McCormick, Satish Ketkar, Robert Merriman, Heekook Yang
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Patent number: 9647292Abstract: A battery cell assembly having a cooling fin with a tube and a flexible thermally conductive sheet disposed on the tube is provided. The tube has first, second, and third tube portions. The sheet has first, second, and third sheet portions. The first and second sheet portions are disposed on at least the first and second tube portions, respectively, and the third sheet portion extends between the first and second tube portions. The assembly further includes a first clamping member clamping the first sheet portion to the first tube portion, and a second clamping member clamping the second sheet portion to the second tube portion. The assembly further includes a battery cell disposed against the third sheet portion.Type: GrantFiled: April 12, 2013Date of Patent: May 9, 2017Assignee: LG Chem, Ltd.Inventors: Robert Merriman, Satish Ketkar, Michael Nielson, Igor Isayev
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Patent number: 9627725Abstract: A battery pack having a battery module, a thermoelectric heat pump, and a cooling manifold is provided. The battery module has a first battery cell, a housing, and a first solid cooling fin. A first panel portion of the first solid cooling fin is disposed against the first battery cell. A second panel portion of the first solid cooling fin is disposed on an outer surface of the housing and is coupled to an end portion of the first panel portion. A first side of the thermoelectric heat pump is disposed against the second panel portion, and a second side of the thermoelectric heat pump is disposed against the cooling manifold. The thermoelectric heat pump transfers heat energy from the first solid cooling fin to the cooling manifold in response to a first electrical current flowing through the thermoelectric heat pump in a first direction, to reduce a temperature level of the first battery cell.Type: GrantFiled: April 28, 2015Date of Patent: April 18, 2017Assignee: LG Chem, Ltd.Inventors: Robert Merriman, Heekook Yang, Satish Ketkar, Rick H. Rajaie, Steven Alvey
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Patent number: 9605914Abstract: A battery system is provided. The battery system includes a cooling plate having a housing, an inlet port, and an outlet port. The housing defines an interior region. Both the inlet port and the outlet port fluidly communicate with the interior region. The battery system further includes a solid thermoplastic cooling fin having first and second panel portions. The first panel portion is disposed directly on and against the cooling plate. The battery system further includes a first battery cell disposed directly on and against a first side of the second panel portion of the solid thermoplastic cooling fin. The solid thermoplastic cooling fin is configured to conduct heat energy from the first battery cell to the cooling plate.Type: GrantFiled: July 10, 2014Date of Patent: March 28, 2017Assignee: LG Chem, Ltd.Inventors: Juil Yum, Satish Ketkar
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Publication number: 20160322680Abstract: A battery pack having a battery module, a thermoelectric heat pump, and a cooling manifold is provided. The battery module has a first battery cell, a housing, and a first solid cooling fin. A first panel portion of the first solid cooling fin is disposed against the first battery cell. A second panel portion of the first solid cooling fin is disposed on an outer surface of the housing and is coupled to an end portion of the first panel portion. A first side of the thermoelectric heat pump is disposed against the second panel portion, and a second side of the thermoelectric heat pump is disposed against the cooling manifold. The thermoelectric heat pump transfers heat energy from the first solid cooling fin to the cooling manifold in response to a first electrical current flowing through the thermoelectric heat pump in a first direction, to reduce a temperature level of the first battery cell.Type: ApplicationFiled: April 28, 2015Publication date: November 3, 2016Inventors: Robert Merriman, Heekook Yang, Satish Ketkar, Rick H. Rajaie, Steven Alvey
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Patent number: 9461343Abstract: A battery cell assembly is provided. The battery cell assembly includes a cooling fin having a rectangular-shaped aluminum plate, a tube, and a flexible thermally conductive sheet. The plate has a first side and a second side. The tube is coupled to the first side of the plate and extends on at least first, second, and third peripheral edge portions of the plate. The flexible thermally conductive sheet is disposed on the first side of the plate. The battery cell assembly further includes a battery cell disposed against the flexible thermally conductive sheet of the cooling fin.Type: GrantFiled: September 17, 2014Date of Patent: October 4, 2016Assignee: LG Chem, Ltd.Inventors: Robert Merriman, Michael Nielson, Igor Isayev, Satish Ketkar
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Patent number: 9444124Abstract: A battery cell assembly having a cooling fin with a tube, a substantially rectangular-shaped metal plate, first and second cylindrical coupling members, and first and second O-ring gaskets is provided. The tube has an inlet tube portion and an outlet tube portion. The tube is coupled to a peripheral region of the metal plate. The first cylindrical coupling member has a first aperture extending therethrough, and first and second circumferential grooves. The inlet tube portion is disposed in the first aperture and coupled to the first cylindrical coupling member. The first and second O-ring gaskets are disposed in the first and second circumferential grooves, respectively. The outlet tube portion is disposed in the second aperture and is coupled to the second cylindrical coupling member.Type: GrantFiled: January 23, 2014Date of Patent: September 13, 2016Assignee: LG Chem, Ltd.Inventors: David Beltz, Heekook Yang, Anthony Arena, Satish Ketkar
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Patent number: 9379420Abstract: A battery system having a cooling plate with a conduit therein is provided. The system further includes a battery module having first and second battery cells. The system further includes a compressor, and a condenser coupled between the compressor and the conduit of the cooling plate. The system further includes a microprocessor that determines a maximum temperature level of the first and second battery cells, and determines a target temperature level for the cooling plate based on the maximum temperature level. The microprocessor determines a temperature error value based on a difference between a temperature level and the target temperature level of the cooling plate, and determines a desired RPM value for the compressor based on the temperature error value.Type: GrantFiled: July 14, 2014Date of Patent: June 28, 2016Assignee: LG Chem, Ltd.Inventors: Satish Ketkar, Paul Laurain, Richard McCormick
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Publication number: 20160085247Abstract: A battery pack is provided. The battery pack includes first and second temperature sensors that are disposed in first and second interior spaces, respectively. The first temperature sensor generates a first signal indicative of a first temperature level of the battery cell. The second temperature sensor generates a second signal indicative of a second temperature level of the DC-DC voltage converter. The battery pack further includes a microprocessor that determines a first fan speed percentage value of the electric fan based on the first temperature level, and a second fan speed percentage value of the electric fan based on the second temperature level. The microprocessor selects the first fan speed percentage value if the first fan speed percentage value is greater than the second fan speed percentage value.Type: ApplicationFiled: September 18, 2014Publication date: March 24, 2016Inventors: Alexander Jeffrey Smith, Richard McCormick, Satish Ketkar, Robert Merriman, Heekook Yang
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Patent number: 9257732Abstract: A battery cell assembly having a first battery cell and a cooling fin is provided. The first battery cell has a first housing and first and second electrical terminals. The cooling fin is disposed against the first housing. The cooling fin has a substantially rectangular-shaped plate that extends along a longitudinal axis. The substantially rectangular-shaped plate has a plate portion with a first side and a second side. The first side has a first plurality of recessed regions and a first plurality of flat regions. Each recessed region of the first plurality of recessed regions is disposed between two flat regions of the first plurality of flat regions along the longitudinal axis. The first housing of the first battery cell is disposed against the first side such that the first housing contacts the first plurality of flat regions.Type: GrantFiled: October 22, 2013Date of Patent: February 9, 2016Assignee: LG Chem, Ltd.Inventors: Juil Yum, Satish Ketkar, Heekook Yang, Steven Lent
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Publication number: 20150349392Abstract: A battery pack is provided. The battery pack includes first and second temperature sensors that are disposed in first and second interior spaces, respectively. The first temperature sensor generates a first signal indicative of a first temperature level of the battery cell. The second temperature sensor generates a second signal indicative of a second temperature level of the DC-DC voltage converter. The battery pack further includes a microprocessor that determines a first desired operational speed value of the electric fan based on the first temperature level, and a second desired operational speed value of the electric fan based on the second temperature level. The microprocessor selects the first desired operational speed value if the first desired operational speed value is greater than the second desired operational speed value.Type: ApplicationFiled: May 27, 2014Publication date: December 3, 2015Applicant: LG Chem, Ltd.Inventors: Alexander Jeffrey Smith, Richard McCormick, Satish Ketkar, Robert Merriman, Heekook Yang
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Patent number: 9105950Abstract: A battery system and a method for cooling the battery system are provided. The system includes an evaporative cooling member, and a battery module having a housing, a battery cell, and a solid cooling fin. The housing holds the battery cell therein. The solid cooling fin has first and second panel portions. The first panel portion is disposed against the battery cell. The second panel portion extends through the housing and is disposed on the evaporative cooling member. The solid cooling fin conducts heat energy from the battery cell to the evaporative cooling member. The evaporative cooling member receives a gaseous-liquid refrigerant and transitions the gaseous-liquid refrigerant into a gaseous refrigerant utilizing the heat energy received from the solid cooling fin.Type: GrantFiled: March 29, 2012Date of Patent: August 11, 2015Assignee: LG Chem, Ltd.Inventors: Thomas J. Gadawski, Satish Ketkar, Michael Nielson
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Publication number: 20150207187Abstract: A battery cell assembly having a cooling fin with a tube, a substantially rectangular-shaped metal plate, first and second cylindrical coupling members, and first and second O-ring gaskets is provided. The tube has an inlet tube portion and an outlet tube portion. The tube is coupled to a peripheral region of the metal plate. The first cylindrical coupling member has a first aperture extending therethrough, and first and second circumferential grooves. The inlet tube portion is disposed in the first aperture and coupled to the first cylindrical coupling member. The first and second O-ring gaskets are disposed in the first and second circumferential grooves, respectively. The outlet tube portion is disposed in the second aperture and is coupled to the second cylindrical coupling member.Type: ApplicationFiled: January 23, 2014Publication date: July 23, 2015Applicant: LG Chem, Ltd.Inventors: David Beltz, Heekook Yang, Anthony Arena, Satish Ketkar
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Patent number: 9083066Abstract: A battery system having first and second battery cells and a cooling fin disposed between the first and second battery cells is provided. The cooling fin receives heat energy from the first and second battery cells and transitions a two-phase refrigerant into a gaseous refrigerant within an internal flow path. The compressor pumps the gaseous refrigerant into a condenser. The condenser transitions the gaseous refrigerant into the liquid refrigerant by extracting heat energy from the gaseous refrigerant.Type: GrantFiled: November 27, 2012Date of Patent: July 14, 2015Assignee: LG Chem, Ltd.Inventors: Satish Ketkar, Robert Merriman, Michael Nielson, Igor Isayev
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Publication number: 20150111075Abstract: A battery cell assembly having a first battery cell and a cooling fin is provided. The first battery cell has a first housing and first and second electrical terminals. The cooling fin is disposed against the first housing. The cooling fin has a substantially rectangular-shaped plate that extends along a longitudinal axis. The substantially rectangular-shaped plate has a plate portion with a first side and a second side. The first side has a first plurality of recessed regions and a first plurality of flat regions. Each recessed region of the first plurality of recessed regions is disposed between two flat regions of the first plurality of flat regions along the longitudinal axis. The first housing of the first battery cell is disposed against the first side such that the first housing contacts the first plurality of flat regions.Type: ApplicationFiled: October 22, 2013Publication date: April 23, 2015Applicant: LG Chem, Ltd.Inventors: Juil Yum, Satish Ketkar, Heekook Yang, Steven Lent
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Patent number: 8977510Abstract: A system and a method for determining charging and discharging power levels for a battery pack are provided. The battery pack has an enclosure holding a battery module therein. The system includes a computer that determines a temperature correlation value based on first and second temperature values associated with the battery pack. The computer determines a third temperature value indicative of a temperature level of a first battery cell disposed adjacent to the end of a housing in the battery pack based on the first temperature value and the temperature correlation value. The computer determines a desired charging power level for the battery pack based on the third temperature value.Type: GrantFiled: December 15, 2011Date of Patent: March 10, 2015Assignee: LG Chem, Ltd.Inventors: Satish Ketkar, Thomas J. Gadawski, Mike Nielson
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Publication number: 20150000134Abstract: A battery cell assembly is provided. The battery cell assembly includes a cooling fin having a rectangular-shaped aluminum plate, a tube, and a flexible thermally conductive sheet. The plate has a first side and a second side. The tube is coupled to the first side of the plate and extends on at least first, second, and third peripheral edge portions of the plate. The flexible thermally conductive sheet is disposed on the first side of the plate. The battery cell assembly further includes a battery cell disposed against the flexible thermally conductive sheet of the cooling fin.Type: ApplicationFiled: September 17, 2014Publication date: January 1, 2015Inventors: Robert Merriman, Michael Nielson, Igor Isayev, Satish Ketkar
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Publication number: 20140322572Abstract: A battery system is provided. The battery system includes a cooling plate having a housing, an inlet port, and an outlet port. The housing defines an interior region. Both the inlet port and the outlet port fluidly communicate with the interior region. The battery system further includes a solid thermoplastic cooling fin having first and second panel portions. The first panel portion is disposed directly on and against the cooling plate. The battery system further includes a first battery cell disposed directly on and against a first side of the second panel portion of the solid thermoplastic cooling fin. The solid thermoplastic cooling fin is configured to conduct heat energy from the first battery cell to the cooling plate.Type: ApplicationFiled: July 10, 2014Publication date: October 30, 2014Inventors: Juil Yum, Satish Ketkar
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Publication number: 20140322563Abstract: A battery system having a cooling plate with a conduit therein is provided. The system further includes a battery module having first and second battery cells. The system further includes a compressor, and a condenser coupled between the compressor and the conduit of the cooling plate. The system further includes a microprocessor that determines a maximum temperature level of the first and second battery cells, and determines a target temperature level for the cooling plate based on the maximum temperature level. The microprocessor determines a temperature error value based on a difference between a temperature level and the target temperature level of the cooling plate, and determines a desired RPM value for the compressor based on the temperature error value.Type: ApplicationFiled: July 14, 2014Publication date: October 30, 2014Inventors: Satish Ketkar, Paul Laurain, Richard McCormick