Patent ID: 11946760
Assignee: NISSAN NORTH AMERICA, INC.
Field: Transport (Mechanical engineering)
Classification: CPC G  B | IPC B  G

Claim 0:
1. A method for activating an engine of a hybrid electric vehicle (HEV) to charge a battery, comprising:
obtaining a first global positioning system (GPS) trace from a first trip of the HEV along a first route, wherein the first route comprises first route segments represented by first respective edges in a navigation map, wherein the first GPS trace comprises first coordinates along the first route and first trace metadata, wherein the first trace metadata comprise first hybrid-related aspects of the HEV recorded at at least some of the first coordinates, and wherein the first hybrid-related aspects comprise, for the first respective edges, first respective average battery consumption/regeneration (eabcr), first battery regeneration on stop (eabrs), first number of times stopped (ents), and first average stop time (east);
obtaining a second GPS trace from a second trip of the HEV along a second route that at least partially overlaps the first route, wherein the second route comprises second route segments represented by second respective edges in the navigation map, wherein the second GPS trace comprises second coordinates along the second route and second trace metadata, wherein the second trace metadata comprise second hybrid-related aspects of the HEV recorded at at least some of the second coordinates, and wherein the second hybrid-related aspects comprise, for the second respective edges, second respective average battery consumption/regeneration (eabcr), second battery regeneration on stop (eabrs), second number of times stopped (ents), and second average stop time (east);
updating the navigation map to incorporate an aggregation of the first trace metadata and the second trace metadata for edges of the navigation map corresponding to route segments traversed by the HEV along the first route or along the second route;
using, after updating the navigation map, the navigation map to obtain an activation action of the engine of the HEV, wherein the activation action is selected from a set comprising a first activation action of turning the engine on and a second activation action of turning the engine off, wherein the activation action is obtained using a policy that is configured to map states of the HEV to activation actions, wherein a state of the HEV is determined based on a set of edges of the navigation map probabilistically determined to have been traversed, a current battery level of the HEV, and a current status of the engine of the HEV, wherein the current status of the engine is one of an ON state or an OFF state; and
activating the engine according to the activation action, wherein activating the engine using the first activation action causes the engine to turn on to charge the battery of the HEV.