| CPC B60L 15/2045 (2013.01) [B60L 58/12 (2019.02); B60L 58/16 (2019.02); G07C 5/0816 (2013.01); H02J 7/0048 (2020.01); H02J 7/005 (2020.01); H02J 7/14 (2013.01); B60L 2240/12 (2013.01); B60L 2240/545 (2013.01); B60L 2240/549 (2013.01); B60L 2240/62 (2013.01); B60L 2240/64 (2013.01); B60L 2240/665 (2013.01); B60L 2240/667 (2013.01); B60L 2250/10 (2013.01); B60L 2250/16 (2013.01)] | 8 Claims |
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1. An information processing system comprising:
a road information acquisition unit that acquires road information on a path from a departure place to a destination to be traveled by an electric vehicle equipped with a secondary battery;
a section divider that divides the path into multiple sections based on gradient information included in the road information;
an output power estimation unit that estimates output power of the secondary battery required to allow the electric vehicle to travel each of the sections at a set speed;
a section electric energy estimation unit that estimates a net power consumption of each of the sections based on output power and traveling time of the section;
a required capacity estimation unit that estimates capacity of the secondary battery required to travel on the path based on electric energy acquired by totaling the net power consumptions in the multiple sections;
a discharge-plan-candidate deriving unit that, before departure of the electric vehicle on the path, derives multiple discharge plans defined by a combination of a target state of charge (SOC) of the secondary battery at a time of departure from the departure place and a target SOC at a time of arrival at the destination, based on the capacity of the secondary battery;
an SOC usage range calculator that calculates a target SOC at a time of passing through a start point and a target SOC at a time of passing through an end point of each of the sections, for each of the discharge plans, to calculate an SOC usage range of the section;
an output current calculator that calculates an output current of the secondary battery in each of the sections in accordance with (i) the output power of the secondary battery in the section and (ii) output voltage of the secondary battery in the section, the output voltage being based on the SOC usage range in the section;
a section deterioration-amount calculator that calculates a deterioration rate or an amount of deterioration of the secondary battery in each of the sections based on the SOC usage range and the output current of the secondary battery in the section with reference to a discharge deterioration map, the discharge deterioration map defining a relationship between (i) a combination of the SOC usage range in the section and a discharge rate, and (ii) the deterioration rate of the secondary battery;
a total deterioration-amount calculator that calculates a total deterioration rate or a total amount of deterioration of the secondary battery which result from traveling on the path, by totaling the deterioration rates or the amounts of deterioration of the secondary battery in the multiple sections;
a discharge plan selector that selects a discharge plan minimizing the total deterioration rate or the amount of deterioration from among the multiple discharge plans; and
a setting information notification unit that notifies a control device in the electric vehicle of setting information including the selected discharge plan to travel according to the selected discharge plan.
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