Capacity control device and computer-readable medium

1. A capacity control device, comprising:

a storage unit for storing information representing a first energy amount and a second energy amount of an amount of energy accumulated in a power source for driving mounted on a vehicle, the first energy amount being available for power transmission and reception between the power source for driving and a power grid without an instruction from a user of the vehicle, and the second energy amount being available to the user in response to an instruction from the user;

an updating unit for updating the second energy amount without updating the first energy amount based on an energy amount accumulated in the power source for driving or an energy amount released from the power source for driving in accordance with an instruction from the user, and updating the first energy amount without updating the second energy amount based on an energy amount accumulated in the power source for driving or an energy amount released from the power source for driving in the power transmission and reception performed in accordance with an instruction from an external control device of the vehicle, without an instruction from the user; and

a control unit for presenting information representing the second energy amount that has been updated by the updating unit to the user.

2. The capacity control device according to claim 1 , wherein,

the power source for driving is a battery,

the storage unit is for storing information representing a first remaining capacity and a second remaining capacity of a remaining capacity of the battery, the first remaining capacity being available for power transmission and reception between the battery and the power grid without an instruction from the user of the vehicle, and the second remaining capacity being available to the user in response to an instruction from the user,

the updating unit is for updating the second remaining capacity without updating the first remaining capacity based on a charge amount or a discharge amount of the battery, which derives from charge or discharge of the battery performed in accordance with an instruction from the user, and for updating the first remaining capacity without updating the second remaining capacity based on a charge amount or a discharge amount of the battery in the power transmission and reception performed in accordance with an instruction from an external control device of the vehicle, without an instruction from the user, and

the control unit is for presenting information representing the second remaining capacity that has been updated by the updating unit to the user.

3. The capacity control device according to claim 2 , wherein the control unit is for presenting information representing a charging rate to the user, which is obtained based on a maximum capacity and the second remaining capacity of a capacity of the battery, the maximum capacity being available to the user of the vehicle.

4. The capacity control device according to claim 3 , further comprising a capacity change obtaining unit for obtaining an instruction to change the maximum capacity, wherein,

the control unit is for presenting information representing a new charging rate to the user, which is obtained based on the maximum capacity that has been changed, and the second remaining capacity.

5. The capacity control device according to claim 4 , wherein the control unit is for prohibiting, when the second remaining capacity is lower than a predetermined value, power transmission and reception from the battery to the power grid during a charge of the battery even if the first remaining capacity is higher than a predetermined value.

6. The capacity control device according to claim 5 , further comprising:

a shift instruction obtaining unit for obtaining an instruction to shift from one of the first remaining capacity and the second remaining capacity to the other, wherein

the updating unit is for updating, when the instruction to shift is obtained, the first remaining capacity and the second remaining capacity based on a capacity to be shifted from one of the first remaining capacity and the second remaining capacity to the other.

7. The capacity control device according to claim 3 , wherein the control unit is for prohibiting, when the second remaining capacity is lower than a predetermined value, power transmission and reception from the battery to the power grid during a charge of the battery even if the first remaining capacity is higher than a predetermined value.

8. The capacity control device according to claim 7 , further comprising:

a shift instruction obtaining unit for obtaining an instruction to shift from one of the first remaining capacity and the second remaining capacity to the other, wherein

the updating unit is for updating, when the instruction to shift is obtained, the first remaining capacity and the second remaining capacity based on a capacity to be shifted from one of the first remaining capacity and the second remaining capacity to the other.

9. The capacity control device according to claim 3 , further comprising:

a shift instruction obtaining unit for obtaining an instruction to shift from one of the first remaining capacity and the second remaining capacity to the other, wherein

the updating unit is for updating, when the instruction to shift is obtained, the first remaining capacity and the second remaining capacity based on a capacity to be shifted from one of the first remaining capacity and the second remaining capacity to the other.

10. The capacity control device according to claim 9 , wherein the shift instruction obtaining unit is for obtaining an instruction to shift from the first remaining capacity to the second remaining capacity from the user.

11. The capacity control device according to claim 4 , further comprising:

a shift instruction obtaining unit for obtaining an instruction to shift from one of the first remaining capacity and the second remaining capacity to the other, wherein

the updating unit is for updating, when the instruction to shift is obtained, the first remaining capacity and the second remaining capacity based on a capacity to be shifted from one of the first remaining capacity and the second remaining capacity to the other.

12. The capacity control device according to claim 2 , further comprising:

a shift instruction obtaining unit for obtaining an instruction to shift from one of the first remaining capacity and the second remaining capacity to the other, wherein

the updating unit is for updating, when the instruction to shift is obtained, the first remaining capacity and the second remaining capacity based on a capacity to be shifted from one of the first remaining capacity and the second remaining capacity to the other.

13. The capacity control device according to claim 12 , wherein the shift instruction obtaining unit is for obtaining an instruction to shift from the first remaining capacity to the second remaining capacity from the user.

14. The capacity control device according to claim 13 , wherein the shift instruction obtaining unit is for permitting acceptance of an instruction to shift from the first remaining capacity to the second remaining capacity from the user when a power demand in the power grid is lower than a predetermined value.

15. The capacity control device according to claim 12 , wherein the shift instruction obtaining unit is for obtaining an instruction to shift from the second remaining capacity to the first remaining capacity from the user.

16. The capacity control device according to claim 15 , wherein the shift instruction obtaining unit is for permitting acceptance of an instruction to shift from the second remaining capacity to the first remaining capacity from the user when a power demand in the power grid is higher than a predetermined value.

17. The capacity control device according to claim 12 , further comprising:

a value control unit for determining a cost of shifting a capacity from one of the first remaining capacity and the second remaining capacity to the other based on a power demand in the power grid, wherein

the control unit is for presenting a cost determined by the value control unit to the user.

18. The capacity control device according to claim 2 , wherein the control unit is for prohibiting, when the second remaining capacity is lower than a predetermined value, power transmission and reception between the battery and the power grid during a charge of the battery even if the first remaining capacity is higher than a predetermined value.

19. The capacity control device according to claim 18 , further comprising:

a shift instruction obtaining unit for obtaining an instruction to shift from one of the first remaining capacity and the second remaining capacity to the other, wherein

the updating unit is for updating, when the instruction to shift is obtained, the first remaining capacity and the second remaining capacity based on a capacity to be shifted from one of the first remaining capacity and the second remaining capacity to the other.

20. A non-transitory computer-readable medium having stored thereon a program for causing a computer to perform operations comprising:

storing information representing a correspondence of a first user to a plurality of second users;

storing information representing a correspondence of the plurality of second users to a plurality of vehicles equipped with a power source for driving;

obtaining schedule information representing an estimated period in which at least a part of the plurality of vehicles becomes available for power transmission and reception with a power grid from the first user; and

associating cost information representing a cost that should be provided to the first user with the first user when at least a part of the plurality of vehicles is available for power transmission and reception with the power grid in the estimated period.