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.
VEHICLE CONTROL BASED ON LITHIUM PLATING DETECTION IN ELECTRIFIED VEHICLE BATTERY
2017-07-20
Patent
Electronic Resource
English
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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