公开(公告)号：US20240204219A1

公开(公告)日：2024-06-20

申请号：US18084762

申请日：2022-12-20

Applicant: Ford Global Technologies, LLC

Inventor： Hassan FARHAT ,  Ravi GOPAL ,  Yixin YAO

IPC: H01M8/04029 ,  B60L58/33 ,  H01M8/0432 ,  H01M8/04537 ,  H01M8/04746

CPC classification number: H01M8/04029 ,  B60L58/33 ,  H01M8/0432 ,  H01M8/04619 ,  H01M8/04768 ,  B60H2001/00307 ,  H01M2250/20

Abstract: A multiple fuel cell thermal management system controls a proportional mixing valve, heat exchanger bypass valves, fan speeds, and pump speeds of respective coolant circuits and associated fuel-cell stacks to operate the stacks independently or in combination. When vehicle wheel loads are low or in applications with standby fuel-cell stacks, selected stacks are turned off. During moderate loads or high ambient temperature, the working fuel cell cooling system(s) operates in parasitic load reduction mode, using the non-working cooling circuit(s) as a heat sink running the associated pump at low speed and throttling the proportional mixing valve such that efficient cooling is accomplished in the running circuit with less fan power required than if the non-working circuit is completely shut down. A heat exchanger bypass valve and fan speed are controlled to provide a target stack inlet temperature. Pump speed is controlled responsive to a stack inlet/outlet temperature difference.

公开(公告)号：US20200377075A1

公开(公告)日：2020-12-03

申请号：US16426162

申请日：2019-05-30

Applicant: FORD GLOBAL TECHNOLOGIES, LLC

Inventor： Jason MEYER ,  Dushyant PALEJIYA ,  Rajit JOHRI ,  Yixin YAO

IPC: B60W20/20 ,  B60W10/02 ,  B60W30/192

Abstract: A system and method is disclosed for engine starting and transmission shifting where a controller may be operable to decrease a torque of a motor and operate a starter-generator (ISG) to start an engine responsive to a command to shift the transmission and start the engine. The controller may disengage a second clutch and subsequently shift the transmission to a target gear ratio speed responsive to the torque of the motor achieving zero. The controller may increase respective torques of the motor, ISG, and engine to drive a speed of the motor, ISG, and engine toward a target speed defined by the target gear speed responsive to completion of the shift. The controller may engage the second clutch responsive to the speed of the motor achieving the target speed and engage a disconnect clutch responsive to the respective speeds of the ISG and engine achieving the target speed.