公开(公告)号：US20170203667A1

公开(公告)日：2017-07-20

申请号：US15001618

申请日：2016-01-20

Applicant: Ford Global Technologies, LLC

Inventor： Chuan HE ,  Feng LI ,  Ruiqi MAO

IPC: B60L11/18 ,  H01M10/0525 ,  H01M10/46 ,  H01M10/44

Abstract: A vehicle includes a traction battery and a controller in communication with the battery and programmed to control battery charging in response to a user-selected one of a plurality of charging strategies having different charging rates based on detection of lithium plating in the battery. The charging strategies may include options for faster charging with an urgent or emergency charging strategy selectable a limited number of times to mitigate battery performance degradation associated with lithium plating. A method implemented by a vehicle controller in a vehicle having a traction battery, may include controlling, by the controller, battery charging in response to a user-selected charging strategy selected from one of a plurality of available charging strategies each having a different charging rate and displayed on a user interface in response to detection of lithium plating in the traction battery, at least one charging strategy associated with additional lithium plating if selected.

公开(公告)号：US20170203660A1

公开(公告)日：2017-07-20

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

CPC classification number: B60L11/1816 ,  B60L3/0046 ,  B60L3/12 ,  B60L11/182 ,  B60L11/1866 ,  B60L2240/545 ,  B60L2240/547 ,  H01M10/441 ,  H01M10/482 ,  H01M2010/4271 ,  H01M2220/20 ,  H02J7/0013

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. The ratio may be compared to a threshold associated with current battery state of charge to indicate lithium plating when the ratio is below the threshold. Lithium plating may also be detected based on a measured cell open circuit voltage (OCV) relative to a previously stored OCV value. The measured OCV value may be calculated based on a measured cell voltage and current, and a previously stored cell internal resistance.