Method and electronic system for the automatic management of the energy autonomy of a vehicle particularly of electric vehicles

摘要

A method is described for the automatic management of the energy autonomy of a vehicle, and includes receiving a signal for indicating a distance and/or a path to cover, and dividing the distance and/or the path into space intervals; calculating an allowable variation of energy capacity in a space interval based on energy capacity detected by the sensors and on variation laws of the energy capacity; determining limit conditions for the speed and/or acceleration of the vehicle, on the basis of a map, chosen among a plurality of maps of speed-acceleration-variation of energy capacity; generating a regulated instantaneous torque request on the basis of the speed and/or acceleration detected by the plurality of sensors, of the determined limit conditions for the speed and/or acceleration and of the instantaneous torque request generated by the first central control unit. An electronic system capable of implementing such a method is described.

主权项

1. A method (100) for the automatic management of the energy autonomy of a vehicle of the type comprising a torque-controllable motor (21), a plurality of sensors (22) for the instantaneous measurement of a plurality of drive parameters and of energy capacity (C) of said vehicle, and a first central control unit (23) coupled with said motor (21), capable of generating an instantaneous torque request (md) on the basis of a request of a user, wherein the method (100) comprises phases of:
receiving (101) from a user interface means (11) a signal for indicating a distance and/or a path to cover, and dividing such distance and/or said path into a plurality of space intervals; calculating (102) an allowable variation of energy capacity (ΔC) in a space interval on the basis of an energy capacity (C) detected by said plurality of sensors (22) and on the basis of variation laws of said energy capacity (C); determining (103) limit conditions for the speed and/or acceleration of said vehicle (20) on the basis of a map, chosen among a plurality of maps of speed-acceleration-variation of energy capacity, which relates the speed and the acceleration of said vehicle (20) with the variation of the calculated energy capacity (ΔC); generating (110) a regulated instantaneous torque request (m) on the basis of the speed and/or acceleration detected by said plurality of sensors (22), of said determined limit conditions for the speed and/or acceleration and of said instantaneous torque request (md) generated by said first central control unit (23), wherein said generating phase (110) of a regulated instantaneous torque request (m) comprises phases of: determining (111) a reference torque request (mc) on the basis of current values of speed and/or acceleration detected by said plurality of sensors (22); receiving (112) from said first central control unit (23) an instantaneous torque request (md) corresponding to a request made by the user; verifying (113) that the current values of speed and/or acceleration detected by said plurality of sensors (22) meet said determined limit conditions for the speed and/or acceleration; if said limit conditions for the speed and/or acceleration are met, determining (114) a regulated instantaneous torque request (m) equal to the instantaneous torque request (md); if said limit conditions for the speed and/or acceleration are not met, comparing (115) said reference torque request (mc) with said instantaneous torque request (md); in case said instantaneous torque request (md) is lower than said reference torque request (mc), determining (114) a regulated instantaneous torque request (m) equal to said instantaneous torque request (md); in case said instantaneous torque request (md) is greater than said reference torque request (mc), generating (116) a regulated instantaneous torque request (m) equal to said reference torque request (mc).