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公开(公告)号：US11685234B2
公开(公告)日：2023-06-27
申请号：US17375890
申请日：2021-07-14
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Devin C. Richardson , Cameron Paul Smith , Anthony James Donatelli , Nathan John English , Tanay Kalpej Patel
CPC classification number: B60H1/3205 , B60H1/00392 , B60H1/00485 , B60H1/3227 , B60H2001/326 , B60H2001/3266 , B60H2001/3272 , B60H2001/3279 , B60H2001/3285
Abstract: A control system includes a refrigerant recovery module and at least one of a valve control module and a compressor control module. The refrigerant recovery module is configured to generate a refrigerant recovery signal to initiate a recovery of refrigerant from a first heat exchanger of a thermal system for an electric vehicle, and to stop the refrigerant recovery based on a temperature of refrigerant circulating through the first heat exchanger. The valve control module is configured to open a first valve to allow refrigerant to flow through the first heat exchanger in response to the refrigerant recovery signal. The compressor control module is configured to increase a speed of a compressor disposed upstream from the first heat exchanger in response to the refrigerant recovery signal.
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Patent Agency Ranking
公开(公告)号：US11933528B2
公开(公告)日：2024-03-19
申请号：US17456999
申请日：2021-11-30
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Neeraj S Shidore , Min Sun , Ryan D Hopper , Cameron Paul Smith
CPC classification number: F25B49/02 , G01N9/26 , F25B2700/191
Abstract: Methods and systems provided for determining a phase state and/or for determining a degree of subcooling in a fluid. An exemplary method for operating a refrigeration cycle includes flowing a refrigerant through a metering device and calculating a pressure differential of the refrigerant across the metering device. Further, the method includes determining whether the refrigerant is a saturated liquid based on the pressure differential. The method includes, when the refrigerant is not a saturated liquid, cooling the refrigerant upstream of the metering device.
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公开(公告)号：US11807074B2
公开(公告)日：2023-11-07
申请号：US17555915
申请日：2021-12-20
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Michael H. Carlson , Kyle Holihan , Cameron Paul Smith , Anthony James Donatelli , Lawrence P. Ziehr
IPC: B60H1/32
CPC classification number: B60H1/3204 , B60H1/3205
Abstract: A thermal management system for a vehicle includes a plurality of fluid flow circuits including a heating ventilation and air conditioning (HVAC) circuit circulating a flow of refrigerant therethrough and including an evaporator, a chiller heat exchanger, a first expansion valve located upstream of the evaporator, a second expansion valve located upstream of the chiller heat exchanger, and a heat exchanger located fluidly upstream of the expansion valves. A propulsion cooling circuit circulates a flow of coolant therethrough which is utilized to condition one or more propulsion components of the vehicle. The flow of coolant is directed through the heat exchanger, thus subcooling the flow of refrigerant. A controller is operably connected to one or more control points of the thermal management system and is configured to adjust the one or more control points to achieve a target amount of subcooling of the flow of refrigerant at the heat exchanger.
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公开(公告)号：US20230168014A1
公开(公告)日：2023-06-01
申请号：US17456999
申请日：2021-11-30
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Neeraj S Shidore , Min Sun , Ryan D Hopper , Cameron Paul Smith
CPC classification number: F25B49/02 , G01N9/26 , F25B2700/191
Abstract: Methods and systems provided for determining a phase state and/or for determining a degree of subcooling in a fluid. An exemplary method for operating a refrigeration cycle includes flowing a refrigerant through a metering device and calculating a pressure differential of the refrigerant across the metering device. Further, the method includes determining whether the refrigerant is a saturated liquid based on the pressure differential. The method includes, when the refrigerant is not a saturated liquid, cooling the refrigerant upstream of the metering device.
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公开(公告)号：US20240375480A1
公开(公告)日：2024-11-14
申请号：US18313449
申请日：2023-05-08
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Min Sun , David Eugene Edwards , Cameron Paul Smith , Rupesh Sonu Kakade
IPC: B60H1/00
Abstract: A method of operating a cooling system of a vehicle includes measuring a refrigerant pressure and a refrigerant temperature of a flow of refrigerant in a refrigerant circuit of the cooling system, estimating a relative humidity of a supply airflow across an evaporator of the refrigerant circuit utilizing the measured refrigerant pressure and the measured refrigerant temperature, and changing operation of one or more components of the refrigerant circuit as a result of the estimated relative humidity.
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公开(公告)号：US20230191880A1
公开(公告)日：2023-06-22
申请号：US17555915
申请日：2021-12-20
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Michael H. Carlson , Kyle Holihan , Cameron Paul Smith , Anthony James Donatelli , Lawrence P. Ziehr
IPC: B60H1/32
CPC classification number: B60H1/3204 , B60H1/3205
Abstract: A thermal management system for a vehicle includes a plurality of fluid flow circuits including a heating ventilation and air conditioning (HVAC) circuit circulating a flow of refrigerant therethrough and including an evaporator, a chiller heat exchanger, a first expansion valve located upstream of the evaporator, a second expansion valve located upstream of the chiller heat exchanger, and a heat exchanger located fluidly upstream of the expansion valves. A propulsion cooling circuit circulates a flow of coolant therethrough which is utilized to condition one or more propulsion components of the vehicle. The flow of coolant is directed through the heat exchanger, thus subcooling the flow of refrigerant. A controller is operably connected to one or more control points of the thermal management system and is configured to adjust the one or more control points to achieve a target amount of subcooling of the flow of refrigerant at the heat exchanger.
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