Curtailing battery degradation of an electric vehicle during long-term parking

A system for charging a battery of an electric vehicle (EV) comprising:

• a vehicle-to-grid (V2G) interface located at a parking spot of a parking area, the V2G interface comprising a receptacle for charging and discharging an EV;
• a charging server in communication with the V2G interface that:
• commands the V2G interface to discharge the battery of the EV to a low threshold SoC that is below an upper threshold SoC specified by an operator of the EV;
• generates an expected return time of the operator of the EV based on an expected time of arrival of another vehicle at a location proximal to the parking spot, a distance from the parking spot to the location proximal to the V2G interface at the expected time of arrival of the other vehicle and information characterizing the other vehicle, wherein the expected time of arrival of the other vehicle at the location proximal to the parking spot and the information characterizing the other vehicle are based on data from an end-user device associated with the operator of the EV;
• commands the V2G interface to charge the battery of the EV to an upper threshold SoC that is above the low threshold SoC at a return time threshold that corresponds to a calculated amount of time prior to the expected return time of the operator of the EV;
• and
• provides a credit to an account of the operator of the EV in response to suppling power to a power grid coupled to the V2G interface with power discharged from the battery of the EV.

A method for charging a battery of an electric vehicle (EV), the method comprising:

• determining, in response to detecting that an electric vehicle (EV) is electrically coupled to a vehicle-to grid (V2G) interface, an expected return time of an operator of the EV based on an expected time of arrival of another vehicle at a location proximal to the V2G interface, a distance from the V2G interface to the location proximal to the V2G interface at the expected time of arrival of the other vehicle and information characterizing the other vehicle, wherein the expected time of arrival of the other vehicle at the location proximal to the V2G interface and the information characterizing the other vehicle are based on data from an end-user device associated with the operator of the EV;
• discharging the battery of the EV to a low threshold state of charge (SoC) for the battery of the EV;
• and
• initiating charging of the battery of the EV to an upper threshold SoC that is above the low threshold SoC at a return threshold time that is a calculated amount of time representing the expected return time of the operator of the EV.