公开(公告)号：US20220332214A1

公开(公告)日：2022-10-20

申请号：US17234486

申请日：2021-04-19

Applicant: Ford Global Technologies, LLC

Inventor： Benjamin A. Tabatowski-Bush ,  John Paul Gibeau ,  Xu Wang ,  Xianzhi Gong ,  Baojin Wang

IPC: B60L58/12 ,  H02J7/00 ,  B60L50/64

Abstract: A traction battery arrangement includes a string of cells and bus bars, a coil wrapped around one of the bus bars, and a controller. The controller drives AC current over a swept range of frequencies into the one of the bus bars via the coil, and receives voltage data from at least one of the cells that results from the AC current.

公开(公告)号：US11214171B2

公开(公告)日：2022-01-04

申请号：US16570655

申请日：2019-09-13

Applicant: Ford Global Technologies, LLC

Inventor： Xu Wang ,  John Paul Gibeau

IPC: B60L58/22 ,  H02J7/00 ,  B60L58/12 ,  B60L53/62 ,  B60K6/28

Abstract: A vehicle system is provided with a battery and a controller. The battery includes a first module having a first capacity and a second module. The controller programmed to responsive to indication that the second module has been replaced by a new module with a second capacity that is greater than the first capacity for a corresponding state of charge (SOC), adjust a second SOC of the new module such that a maximum SOC value of the new module aligns with a maximum SOC value of the first module. The controller is further programmed to balance the first module and the new module separately.

公开(公告)号：US10991991B2

公开(公告)日：2021-04-27

申请号：US16040288

申请日：2018-07-19

Applicant: Ford Global Technologies, LLC

Inventor： Chuan He ,  Szushen Peter Ho ,  Xu Wang

IPC: H01M10/44 ,  H02J7/00

Abstract: A vehicle includes a traction battery having cells and at least one controller. The controller is programmed to charge and discharge the traction battery according to a net current for the traction battery derived from sets of temperature-based current values, each of the sets corresponding to a different one of the cells, and each of the values for a given one of the sets corresponding to a different zone of the cell.

公开(公告)号：US10737584B2

公开(公告)日：2020-08-11

申请号：US16164046

申请日：2018-10-18

Applicant: Ford Global Technologies, LLC

Inventor： Yuan Zhang ,  Rui Wang ,  Xu Wang

IPC: B60L53/60 ,  B60K6/20 ,  B60L1/00 ,  B60H1/32 ,  B60L58/12 ,  B60L53/14

Abstract: A system for a vehicle including a traction battery, electrical loads, and a controller configured to, during a charge operation, activate the loads such that charge current output by a charger is consumed by the loads and charge current input to the battery approaches zero to update a state of charge (SOC) value of the battery, and deactivate the loads upon completion of the update such that charge current input to the battery increases.

公开(公告)号：US20200122584A1

公开(公告)日：2020-04-23

申请号：US16164046

申请日：2018-10-18

Applicant: Ford Global Technologies, LLC

Inventor： Yuan Zhang ,  Rui Wang ,  Xu Wang

IPC: B60L11/18 ,  B60K6/20 ,  B60L1/00 ,  B60H1/32

Abstract: A system for a vehicle including a traction battery, electrical loads, and a controller configured to, during a charge operation, activate the loads such that charge current output by a charger is consumed by the loads and charge current input to the battery approaches zero to update a state of charge (SOC) value of the battery, and deactivate the loads upon completion of the update such that charge current input to the battery increases.

公开(公告)号：US10473723B2

公开(公告)日：2019-11-12

申请号：US14015241

申请日：2013-08-30

Applicant: FORD GLOBAL TECHNOLOGIES, LLC

Inventor： Yonghua Li ,  Xu Wang

IPC: G01R31/36 ,  G01R31/382 ,  G01R31/374 ,  G01R31/367

Abstract: A method of determining battery power capability may include: determining a circuit model for a battery, including a first resistance (r1) in series with a second resistance (r2) and a capacitance (C) in parallel; setting upper and lower limits for r1, r2 and C based on a battery temperature a battery state of charge or both; applying an EKF to determine r1, r2 and C within the set upper and lower limits; and outputting the battery power capability based on r1, r2 and C. The upper and lower limits may be adjusted based on the age of the battery.

公开(公告)号：US10137792B2

公开(公告)日：2018-11-27

申请号：US15001520

申请日：2016-01-20

Applicant: Ford Global Technologies, LLC

Inventor： Chuan He ,  Jeffrey Cowell ,  Feng Li ,  Xu Wang ,  Ruiqi Mao ,  Brandon Swisher ,  Haiyan Chen

IPC: B60L11/18 ,  B60L3/00 ,  B60L3/12 ,  H02J7/00 ,  H01M10/44 ,  H01M10/48 ,  H01M10/42

Abstract: A vehicle having a traction battery with at least one cell includes a controller coupled to the traction battery and programmed to control charging and discharging of the traction battery in response to detecting lithium plating in the at least one cell indicated by a ratio of differential voltage of the at least one cell as a function of time to cell charging rate of the at least one cell. In various embodiments, the ratio is compared to a threshold associated with current battery state of charge to indicate lithium plating when the ratio is below the threshold. Lithium plating can also be detected based on a measured cell open circuit voltage (OCV) relative to a previously stored OCV value. In various embodiments, the measured OCV value is calculated based on a measured cell voltage and current, and a previously stored cell internal resistance.

公开(公告)号：US10107847B2

公开(公告)日：2018-10-23

申请号：US14224809

申请日：2014-03-25

Applicant: Ford Global Technologies, LLC

Inventor： Xiaoguang Chang ,  Chuan He ,  Xu Wang ,  Richard Dyche Anderson

IPC: G01R31/00 ,  G01R31/04 ,  G01R31/36 ,  G01R27/20

Abstract: A diagnostic method for contact resistance failure includes estimating electrical contact surface resistance of at least one contactor, determining a faulted status of the at least one contactor and indicating the faulted status of the at least one contactor if the at least one contactor is in the faulted status.

公开(公告)号：US09340120B2

公开(公告)日：2016-05-17

申请号：US14052645

申请日：2013-10-11

Applicant: Ford Global Technologies, LLC

Inventor： Xiaoguang Chang ,  Chuan He ,  Xu Wang

IPC: B60L11/18

CPC classification number: B60L11/1864 ,  B60L11/1861 ,  B60L11/1862 ,  B60L2240/26 ,  B60L2240/545 ,  H02J7/00 ,  H02J7/0029 ,  H02J2007/0037 ,  H02J2007/004 ,  Y02T10/7005 ,  Y02T10/7044 ,  Y02T10/7061 ,  Y02T10/7077 ,  Y10S903/903

Abstract: Systems and methods for operating a battery pack supplying power to propel a vehicle are disclosed. One example method comprises, adjusting a battery pack state of charge window in response to vehicle mass. Adjusting the battery pack state of charge window in response to vehicle mass may allow the battery pack to provide an increased amount of energy to a motor so that the motor may provide torque to a driveline for a longer period of time and/or absorb more vehicle generator produced power during vehicle operations.

Abstract translation: 公开了用于操作提供动力以推动车辆的电池组的系统和方法。 一个示例性方法包括：响应于车辆质量来调整电池组充电状态。 响应于车辆质量来调节电池组状态的充电窗口可以允许电池组向电动机提供增加的能量，使得电动机可以向传动系提供更长时间的扭矩和/或吸收更多的车辆 发电机在车辆运行期间产生电力。

公开(公告)号：US20160011269A1

公开(公告)日：2016-01-14

申请号：US14330458

申请日：2014-07-14

Applicant: FORD GLOBAL TECHNOLOGIES, LLC

Inventor： Xu Wang ,  Xiaoguang Chang ,  Chuan He

IPC: G01R31/36

CPC classification number: G01R31/367 ,  G01R31/3835

Abstract: Lithium ion battery state of charge (SOC) is a function of open circuit voltage (OCV). Battery internal diffusion process needs to be nearly completed to be able to measure battery open circuit voltage. The length of the minimum settling time depends on the battery type, usage and temperature. Described are methods to determine electric vehicle battery voltage relaxation time based on battery temperature and usage history.

Abstract translation: 锂离子电池充电状态（SOC）是开路电压（OCV）的函数。 电池内部扩散过程需要几乎完成，以便能够测量电池的开路电压。 最小建立时间的长度取决于电池的类型，用途和温度。 描述了基于电池温度和使用历史确定电动车辆电池电压松弛时间的方法。