公开(公告)号：US20230415580A1

公开(公告)日：2023-12-28

申请号：US17847603

申请日：2022-06-23

Applicant: Ford Global Technologies, LLC

Inventor： Rui WANG ,  Wesley Edward BURKMAN ,  Patterson Kaduvinal ABRAHAM ,  Ai KERAMIDAS

IPC: B60L3/00 ,  B60L58/10 ,  H01H83/10

CPC classification number: B60L3/0084 ,  B60L3/0046 ,  B60L58/10 ,  H01H83/10

Abstract: An electrified vehicle includes a contactor having a coil operable by a low-voltage control signal to selectively electrically couple a terminal of a high-voltage bus to a charger receiving power from an external source. A programmed controller predicts the time it will take for the contactor to close after receiving a command based on the coil temperature and voltage of the command signal. The controller generates the low-voltage control signal responsive to a difference between bus voltage and charger voltage being less than a first threshold at the predicted closing time of the contactor. The control signal may also depend on the rate of change of the charger voltage being below a second threshold.

公开(公告)号：US20210155116A1

公开(公告)日：2021-05-27

申请号：US16691774

申请日：2019-11-22

Applicant: Ford Global Technologies, LLC

Inventor： Rui WANG ,  Xiao Guang YANG ,  Yuan ZHANG ,  Xu WANG

IPC: B60L58/22 ,  B60L58/12 ,  H02J7/00

Abstract: A vehicle includes a traction battery having a plurality of battery cells and a balance circuit configured to selectively discharge one or more of the battery cells. A controller is programmed to estimate charge capacities of the battery cells and determine a standard deviation of the estimated capacities. The controller is further programmed to determine a skewness of the estimated capacities. The controller is also programmed to, in response to the skewness exceeding a first threshold, command the balance circuit to discharge one or more of the battery cells when a state of charge (SOC) of the traction battery is less than a second threshold, and, in response to the skewness being less than the first threshold, command the balance circuit to discharge one or more of the battery cells when the SOC of the traction battery is greater than the second threshold.

公开(公告)号：US20230132798A1

公开(公告)日：2023-05-04

申请号：US17513781

申请日：2021-10-28

Applicant: FORD GLOBAL TECHNOLOGIES, LLC

Inventor： Hesam ZOMORODI MOGHADAM ,  Rui WANG ,  Xu WANG ,  Andrea CORDOBA ARENAS

IPC: B60L58/12 ,  B60L58/16 ,  G01R31/382 ,  G01R31/396

Abstract: A vehicle battery system includes a battery, storage, and one or more controllers. The storage maintains data defining power outputs for the battery at a plurality of predefined combinations of temperature and state of charge. The one or more controllers repeatedly update the data for some of the plurality based on temperatures and states of charge repeatedly encountered by the vehicle, update the data for other of the plurality based on data from a remote server, and discharge the battery according to the data for the some and other of the plurality.

公开(公告)号：US20230226950A1

公开(公告)日：2023-07-20

申请号：US17578880

申请日：2022-01-19

Applicant: FORD GLOBAL TECHNOLOGIES, LLC

Inventor： Hesam ZOMORODI MOGHADAM ,  Xu WANG ,  Rui WANG ,  Andrea CORDOBA ARENAS

IPC: B60L58/22 ,  B60L58/13 ,  H02J7/34 ,  H02J7/00 ,  B60L50/60

CPC classification number: B60L58/22 ,  B60L50/60 ,  B60L58/13 ,  H02J7/0016 ,  H02J7/0048 ,  H02J7/342

Abstract: A controller initiates discharging of at least some cells of a traction battery based on data indicative of cell state of charge and cell capacity such that, upon completion of the discharging, states of charge of at least some of the cells are different, and after charging the cells with a same current for a same period of time, the states of charge fall with a predefined range of values.

公开(公告)号：US20200317076A1

公开(公告)日：2020-10-08

申请号：US16376650

申请日：2019-04-05

Applicant: FORD GLOBAL TECHNOLOGIES, LLC

Inventor： Rui WANG ,  Yuan ZHANG ,  Xu WANG ,  Jeffery R. GRIMES

IPC: B60L53/62 ,  B60L53/14 ,  B60L3/12 ,  G07C5/08 ,  H01H47/00 ,  G01R31/00

Abstract: A power distribution system for a vehicle includes contactors that selectively electrically couple a charger to a high-voltage bus. The contactors are closed at the start of a charge event in an order that alternates for successive charge events. Upon completion of the charge event, the last closed contactor at the start of the charge event is opened first and a weld check is performed. If the weld check is indicative of a welded contactor, then the weld check is performed on the other contactor.

公开(公告)号：US20220219542A1

公开(公告)日：2022-07-14

申请号：US17147608

申请日：2021-01-13

Applicant: FORD GLOBAL TECHNOLOGIES, LLC

Inventor： Baojin WANG ,  Chingchi CHEN ,  Benjamin A. TABATOWSKI-BUSH ,  Aaron WALKER ,  Rui WANG ,  Xianzhi GONG ,  Xu WANG ,  John Paul GIBEAU

IPC: B60L3/00 ,  G01R31/00 ,  G01R31/327

Abstract: A power system includes a battery and a controller. The controller inhibits charge of the battery according to voltage or current values sensed before and after contactors electrically connected to the battery are commanded to open and indicating that a leakage resistance associated with one of the contactors increases after the one of contactors is commanded to open, and a duration of a continuous voltage drop across another of the contactors after the another of the contactors is commanded to open exceeds a threshold.