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

IPC: B60H1/32 ,  B60H1/00

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.