DETERMINATION OF TARGET STATE OF CHARGE BASED ON ESTIMATED GRADIENT

Abstract: a battery control component of an electric vehicle may limit charging of a battery on the electric vehicle to a target state of charge (soc), such as to reserve battery capacity for regenerative braking during downgrades. a computing device associated with the vehicle may calculate an estimated gradient profile and/or an estimated total energy consumption of a predicted upcoming route of the vehicle based on one or more data items, such as gps data, altitude data, and/or map data. the computing device may determine a target soc based on the estimated gradient profile. the computing device may determine a confidence factor associated with the estimated gradient profile, where the confidence factor depends on the quantity of data items used to calculate the estimated gradient profile. the computing device may adjust the target soc based on the confidence factor.

Inventor(s): Satvik Khuntia, Nicholas Lee Hertlein, Maarten Meijer, James Nelson

CPC Classification: B60L53/62 (PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES (arrangements or mounting of electrical propulsion units or of plural diverse prime-movers for mutual or common propulsion in vehicles , ; arrangements or mounting of electrical gearing in vehicles , ; preventing wheel slip by reducing power in rail vehicles ; dynamo-electric machines ; control or regulation of electric motors ); SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES (electric coupling devices combined with mechanical couplings of vehicles ; electric heating for vehicles ); ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL (control or regulation of electric motors ); MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES)

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