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US 11,027,624 B2Granted
Electric vehicle charging by adjusting charger current based on battery chemistry
AssigneeProterra Inc.
InventorsDustin Grace, Seamus T. McGrath
Life of this patent
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Abstract
A method for charging an electric vehicle using charge current from a charging source. The charge current is determined based at least on the state of charge of the electric vehicle and a chemistry or type of the battery system.
Claims9
A method for charging an electric vehicle battery system, comprising:
- receiving a chemistry of the battery system from the electric vehicle battery system as the electric vehicle approaches a charging station;
- after receiving the chemistry of the battery system, electrically connecting the electric vehicle to the charging station;
- after electrically connecting the electric vehicle to the charging station, determining a state of charge of the battery system and a passenger load of the electric vehicle;
- determining a charge current based on at least the determined state of charge and the chemistry of the battery system from a database that identifies the charge current as a function of state of charge for multiple battery chemistries;
- adjusting the determined charge current to a modified charge current based on the determined passenger load;
- charging the electric vehicle by directing a value of current based on the modified charge current from the charging station to the battery system;
- determining an updated state of charge of the battery system after initiation of charging;
- determining a revised charge current based at least on the determined updated state of charge;
- and
- adjusting the value of current directed to the vehicle based on the revised charge current.
7 more elements
Dependencies are inferred from the claim text.