Device for predicting energy consumption and method for predicting energy consumption
A device for predicting energy consumption includes an obtaining unit ( 110 ), an air resistance calculating unit ( 140, 150 ), and an energy consumption predicting unit ( 150 ). The obtaining unit ( 110 ) is configured to obtain road information including traveling speed information set for each route. The air resistance calculating unit ( 140, 150 ) is configured to calculate air resistance as a calculated air resistance value by an air resistance calculation formula on the basis of the traveling speed information of the scheduled traveling route and to correct the calculated air resistance value so that the air resistance is higher according as the traveling speed along the scheduled traveling route is lower. The air resistance is caused when a vehicle travels along a scheduled traveling route. The energy consumption predicting unit ( 150 ) is configured to predict an energy consumption of the scheduled traveling route on the basis of the corrected air resistance value.
1. A device for predicting energy consumption comprising:
an obtaining unit configured to obtain road information including traveling speed information set for each route;
an air resistance calculating unit configured to
calculate air resistance as a calculated air resistance value by using an air calculation formula on a basis of the traveling speed information of a scheduled traveling route, air resistance being caused when a vehicle travels along the scheduled traveling route, and
correct the calculated air resistance value so that the calculated air resistance increases as a traveling speed along the scheduled traveling route decreases; and
an energy consumption predicting unit configured to predict energy consumption over the scheduled traveling route on a basis of the corrected calculated air resistance value.
2. The device for predicting energy consumption according to claim 1 , wherein
the road information includes inclination information for each route, and
the air resistance calculating unit corrects the calculated air resistance value so that the air resistance decreases as an inclination in the scheduled traveling route becomes steeper.
3. The device for predicting energy consumption according to claim 1 , further comprising:
a loss calculating unit configured to
calculate loss in a drive-train as a calculated loss value by using a loss calculation formula on the basis of the traveling speed information, the loss in a drive-train being caused when the vehicle travels along the scheduled traveling route, and
correct the calculated loss value so that the loss in the drive-train increases as the traveling speed decreases, wherein
the energy consumption predicting unit predicts the energy consumption on a basis of the calculated air resistance value and the calculated loss value.
4. The device for predicting energy consumption according to claim 3 , wherein
the road information includes inclination information for each route, and
the loss calculating unit corrects the calculated loss value so that the loss in the drive-train increases as an inclination of the scheduled traveling route becomes steeper.
5. The device for predicting energy consumption according to claim 1 , further comprising:
a rolling resistance calculating unit configured to calculate rolling resistance as a calculated rolling resistance value by using a rolling resistance calculation formula, the rolling resistance being caused when the vehicle travels along the scheduled traveling route, wherein
the rolling resistance calculating unit calculates the calculated rolling resistance value on a basis of ambient air temperature, and
the energy consumption predicting unit predicts the energy consumption on a basis of the calculated air resistance value and the calculated rolling resistance value.
6. The device for predicting energy consumption according to claim 5 , wherein
the rolling resistance calculating unit calculates the calculated rolling resistance value so that the calculated rolling resistance value increases as the ambient air temperature decreases.
7. The device for predicting energy consumption according to claim 5 , wherein
the rolling resistance calculating unit obtains the ambient air temperature by obtaining information of the ambient air temperature from an external device or predicting the ambient air temperature on a basis of at least one or more conditions, and
the conditions are a season, a month, a date, a region of the scheduled traveling route, and a latitude and a longitude of the scheduled traveling route.
8. The device for predicting energy consumption according to claim 7 , wherein
the rolling resistance calculating unit, at the time of predicting the ambient air temperature on the basis of at least one or more of the season, the month, the date, the region of the scheduled traveling route, and the latitude and the longitude of the scheduled traveling route, predicts at smaller temperature intervals between predicted values of the ambient air temperature as the ambient air temperature decreases.
9. The device for predicting energy consumption according to claim 3 , wherein
the loss calculating unit corrects the calculated loss value so that the loss in the drive-train decreases as the rolling resistance increases.
10. The device for predicting energy consumption according to claim 3 , wherein
the loss calculating unit corrects the calculated loss value by using a coefficient corresponding to a type of vehicle.
11. A method for predicting energy consumption comprising:
calculating air resistance as a calculated air resistance value, via a device for predicting energy consumption, by using an air resistance calculation formula on a basis of traveling speed information of a scheduled traveling route, the air resistance being caused when a vehicle travels along the scheduled traveling route;
correcting the calculated air resistance value, via the device, so that the air resistance increases as a traveling speed of the scheduled traveling route decreases; and
predicting energy consumption over the scheduled traveling route, via the device, on a basis of the corrected calculated air resistance value.