End of battery state of charge (soc) vehicle system operation
AssigneeCummins Inc.
InventorJohn P. Kresse, III
Life of this patent
Estimating the term…
Abstract
The present disclosure provides a multi-stage method to extend the range of a vehicle. The method includes taking progressive actions on a vehicle as the state of charge (SOC) drops below defined levels. The method may include monitoring the SOC of the vehicle in relation to a SOC threshold or monitoring the SOC of the vehicle in relation to the distance remaining to a predetermined destination.
Claims16
A method for notifying a driver of a state of charge (“SOC”) of an electrical energy storage device of a vehicle comprising:
- monitoring the SOC;
- determining whether the SOC is less than a first SOC threshold;
- determining whether the SOC is less than a second SOC threshold, the first SOC threshold being greater than the second SOC threshold;
- and
- responding to the SOC being less than the first SOC threshold and greater than the second SOC threshold by activating a SOC conservation system, the SOC conservation system activating a first set of SOC conservation steps including at least one of:
- flashing an indicator light at a first rate, limiting a speed of vehicle to a first vehicle speed reducing a SOC power limit, managing vehicle acceleration, disabling an air conditioning compressor, decreasing a cooling rate, modifying a shift schedule, and reducing a rate of maximum allowable DC-DC converter power;
- and
- responding to the SOC being less than the first SOC threshold and the second SOC threshold, by causing the SOC conservation system to activate a second set of SOC conservation steps including at least one of:
- flashing an indicator light at a second rate that is greater than the first rate;
- limiting the speed of vehicle speed to a second speed that is less than the first speed, reducing an SOC power limit, disabling cooling loops thereby deactivating cooling, and activating vehicle warning flashers.
A method of notifying a driver of a vehicle of a state of charge (“SOC”) of an electrical energy storage device of the vehicle in relation to a destination comprising:
- receiving destination information;
- calculating a route and a distance in response to receiving the destination information;
- determining whether a current SOC of the electrical energy storage device is sufficient to reach the destination;
- responding to the current SOC being insufficient to reach the destination by activating a set of SOC conservation steps;
- and
- monitoring the SOC of the electrical energy storage device until the vehicle reaches the destination.
A method for notifying a driver of a state of charge (“SOC”) of an electrical energy storage device of a vehicle comprising:
- monitoring the SOC;
- determining whether the SOC is less than a first SOC threshold;
- determining whether the SOC is less than a second SOC threshold, the first SOC threshold being greater than the second SOC threshold and the third SOC threshold;
- and
- responding to the SOC being is less than the first SOC threshold and greater than the second SOC threshold by activating a SOC conservation system, the SOC conservation system activating a first set of SOC conservation steps that conserve a first amount of energy;
- and
- responding to the SOC being less than the first SOC threshold and the second SOC threshold by causing the SOC conservation system to activate a second set of SOC conservation steps that conserve a second amount of energy that is greater than the first amount of energy.
Dependencies are inferred from the claim text.