A method for operating an electrically operated or an electrically operable motor vehicle provided with a rechargeable electric energy storage device associated with an electric drive motor, wherein a target state is determined for the energy storage device for a calculated, entered or predicted route for the next trip and an operating strategy is determined for the vehicle, and a minimum specifiable amount of recuperative deceleration is enabled for deceleration processes occurring along this route, comprising:
- a) determining a target state for the energy storage device for stationary charging or discharging state of the energy storage device taking place just prior to the start of the next trip, while taking into account a calculated, entered or predicted route to be traveled as the next route, as well as the total mass of the motor vehicle deviating from a predetermined normal value given at the start of the next journey, including a trailer optionally connected to the motor vehicle and deviating from the normal value of the air resistance coefficient, which deviates from a predetermined normal value in such a way that electric energy can be absorbed with a minimum amount of recuperative deceleration fully or to the greatest possible extent for each of the deceleration processes occurring along this route by the energy storage device, and so that charging or discharging of the energy storage device can be carried out during the stationary charging or discharging until the determined target charging state is reached;
- b) determining an operating strategy for a calculated, entered or predicted route as the route to be traveled during the next trip, while taking into account the route that was determined at the start of the next trip, the total mass of the vehicle deviating from a predetermined normal value, including a trailer optionally connected to the motor vehicle and the air resistance value of the motor vehicle deviating from a predetermined normal value, as well as the charged state of the energy storage device at the start of the trip in such a way that each specifiable minimum amount is enabled by recuperative deceleration for each deceleration process occurring along this route,
- wherein the operating strategy for this purpose comprises at least one of the following steps:
- b1) consuming electric energy by at least one electric consumer solely for the purpose of using electric energy in an anticipatory manner or during at least one deceleration phase during the next trip;
- b2) carrying out in an anticipatory manner at least during one drive phase of the next trip at least one efficiency level worsening measure relating to the drivetrain, in particular to the traction motor, so that in comparison to a state without the at least one efficiency level worsening measure, an increased level of electric energy is required during at least one drive phase;
- and
- b3) carrying out during at least one deceleration process during the next trip at least one efficiency level worsening measure relating to the drive train, in particular to the traction motor in its capacity as a generator, so that in comparison to a state without the at least one efficiency level worsening measure, a smaller amount of electric energy that can be obtained with recuperative deceleration is created with each minimum amount at least during one deceleration process.