RECURSIVE ROUTE PLANNING METHOD FOR ELECTRIC VEHICLE
First Claim
1. A recursive route planning method for an electric vehicle, the method comprising steps of:
- inputting a status condition, wherein the status condition has at least one starting point and at least one destination, mileages for remaining electric power and a route distance between the starting point and destination;
searching all recharge stations between the starting point and destination covering the latitude and longitude;
calculating distance between each recharge station to the starting point and to the destination;
removing recharge stations that do not meet a search condition, wherein said search condition includes whether the distance between the recharge station(s) and the destination is longer than the distance between the starting point and the destination;
integrating a list of recharge stations and planning at least one optimum route for the electric vehicle, wherein an optimum route is determined by one of the following factors;
shortest time, shortest route, minimum times of recharge, shortest time of recharge and driving direction; and
executing the steps above when any status condition changes to retrieve a new driving route,wherein the mileages for remaining electric power is obtained by modified method of estimating remaining mileage that is based on remaining electric power in the battery (SOC %) and distance already driven, and the modified method continues to modify when the remaining electric power in the battery (SOC %) decreases, and wherein the modified method of estimating remaining mileage comprising steps of dividing the driven distance (km) by consumed electric power of the driven distance (%) to obtain an electric power consuming amount of unit distance (km/%), and multiplying the electric power consuming amount of unit distance (km/%) with the remaining electric power in the battery (SOC %) to obtain the distance for remaining electric power (km).
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Abstract
A recursive route planning method for a electric vehicle, the method comprising steps of: inputting a status condition, wherein the status condition has at least one starting point and at least one destination, mileages for remaining electric power and a route distance between the starting point and destination; searching all recharge stations between the starting point and destination covering the latitude and longitude; calculating distance between each recharge station to the starting point and the destination; removing recharge stations that do not meet a search condition; integrating a list of recharge stations and planning at least one optimum route for the electric vehicle; and executing the steps above when any status condition changes to retrieve a new driving route.
18 Citations
10 Claims
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1. A recursive route planning method for an electric vehicle, the method comprising steps of:
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inputting a status condition, wherein the status condition has at least one starting point and at least one destination, mileages for remaining electric power and a route distance between the starting point and destination; searching all recharge stations between the starting point and destination covering the latitude and longitude; calculating distance between each recharge station to the starting point and to the destination; removing recharge stations that do not meet a search condition, wherein said search condition includes whether the distance between the recharge station(s) and the destination is longer than the distance between the starting point and the destination; integrating a list of recharge stations and planning at least one optimum route for the electric vehicle, wherein an optimum route is determined by one of the following factors;
shortest time, shortest route, minimum times of recharge, shortest time of recharge and driving direction; andexecuting the steps above when any status condition changes to retrieve a new driving route, wherein the mileages for remaining electric power is obtained by modified method of estimating remaining mileage that is based on remaining electric power in the battery (SOC %) and distance already driven, and the modified method continues to modify when the remaining electric power in the battery (SOC %) decreases, and wherein the modified method of estimating remaining mileage comprising steps of dividing the driven distance (km) by consumed electric power of the driven distance (%) to obtain an electric power consuming amount of unit distance (km/%), and multiplying the electric power consuming amount of unit distance (km/%) with the remaining electric power in the battery (SOC %) to obtain the distance for remaining electric power (km). - View Dependent Claims (2, 5, 6, 8, 9, 10)
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Specification