Supplying accumulated battery power from a vehicle to the power system

1 . A vehicle comprising:

a charging port configured to be electrically connectable to a power system; an in-vehicle battery configured to electrically connect to the power system via the charging port; and

a control apparatus including one or more processors and one or more non-transitory memories configured to be connected to the processors,

the control apparatus is configured to:

control charge of the in-vehicle battery with power supplied from the power system, and

control a power supply in response to reception of a power supply request requesting the power supply to supply power accumulated in the in-vehicle battery to the power system, wherein the one or more processors is configured to, in cooperation with a program included in the one or more non-transitory memories,

start supplying power from the in-vehicle battery to the power system in a case where the power supply request is received before a charge start time at which start of the charge from the power system to the in-vehicle battery is scheduled based on a time at which termination of the charge of the in-vehicle battery is scheduled, and

supply power from the in-vehicle battery to the power system at a first rate until a state of charge (SOC) in the in-vehicle battery becomes from a first SOC at a time when the control apparatus starts supplying power from the in-vehicle battery to the power system, to a second SOC that is lower than or equal to the first SOC by a predetermined value before the charge start time,

the first rate at which an increase in deterioration in the in-vehicle battery due to the power supply is suppressed when the power supply is continuously performed, wherein

the control apparatus is configured to supply power from the in-vehicle battery to the power system by using a second rate when detecting possibility that a SOC in the in-vehicle battery does not reach the second SOC before the charge start time,

the second rate being a maximum value of the power of the power supply at which the increase in deterioration in the in-vehicle battery due to the power supply is suppressed when the power supply is performed for a short time,

wherein a maximum value of the power of the power supply, at which the increase in deterioration in the in-vehicle battery due to the power supply can be suppressed even in a case where the power supply is continuously performed, is defined as a continuous state of power,

wherein predetermined power that is lower than or equal to the continuous state of power is defined as first state of power, and

wherein a maximum value of the power of the power supply which is higher than the continuous state of power and at which the increase in deterioration in the in-vehicle battery due to the power supply can be suppressed in a case where the power supply is performed for a short time, is defined as second state of power, and

wherein the control apparatus is further configured to

control the power of the power supply in accordance with the first state of power, in a case where it is determined that the state of charge in the in-vehicle battery becomes the predetermined threshold value or lower before the charge start time during the power supply, and

control the power of the power supply in accordance with the second state of power, in a case where it is determined that the state of charge in the in-vehicle battery does not become the predetermined threshold value or lower before the charge start time during the power supply,

wherein a difference between a current actual state of charge in the in-vehicle battery and a target state of charge on an assumption that the power supply in accordance with the first state of power is continuously performed from a power supply start time at which the power supply is started is defined as a state of charge difference, and

wherein the control apparatus is further configured to

control the power of the power supply in accordance with the first state of power, in a case where the state of charge difference is lower than a predetermined value during the power supply, and

control the power of the power supply in accordance with the second state of power, in a case where the state of charge difference is higher than or equal to the predetermined value during the power supply,

wherein the control apparatus is further configured to

sequentially update the second state of power based on the state of charge in the in-vehicle battery; a temperature of the in-vehicle battery; and a time during which the power supply is performed in accordance with the second state of power.

2 . The vehicle according to claim 1 ,

wherein the control apparatus is further configured to

determine the first state of power based on a time from the reception time of the power supply request to the charge start time.

3 . The vehicle according to claim 1 , wherein the one or more processors restrict the state of charge in the in-vehicle battery to lower than or equal to the predetermined value before the charge start time and restrict the power supply to be lower than or equal to a predetermined upper limit.

4 . A non-transitory computer readable medium comprising a program, the program executable by a control apparatus including one or more processors, the program comprising:

controlling charge of an in-vehicle battery with power supplied from the power system, and to control a power supply in response to reception of a power supply request requesting the power supply to supply power accumulated in the in-vehicle battery to the power system;

start supplying power from the in-vehicle battery to the power system in a case where the power supply request is received before a charge start time at which start of the charge from the power system to the in-vehicle battery is scheduled based on a time at which termination of the charge of the in-vehicle battery is scheduled;

supplying power from the in-vehicle battery to the power system at a first rate until a state of charge (SOC) in the in-vehicle battery becomes from a first SOC at a time when the control apparatus starts supplying power from the in-vehicle battery to the power system, to a second SOC that is lower than or equal to the first SOC by a predetermined value before the charge start time,

the first rate at which an increase in deterioration in the in-vehicle battery due to the power supply is suppressed when the power supply is continuously performed; and

supplying power from the in-vehicle battery to the power system by using a second rate when detecting possibility that a SOC in the in-vehicle battery does not reach the second SOC before the charge start time,

wherein the second rate being a maximum value of the power of the power supply at which the increase in deterioration in the in-vehicle battery due to the power supply is suppressed when the power supply is performed for a short time,

wherein a maximum value of the power of the power supply, at which the increase in deterioration in the in-vehicle battery due to the power supply can be suppressed even in a case where the power supply is continuously performed, is defined as a continuous state of power,

wherein predetermined power that is lower than or equal to the continuous state of power is defined as first state of power, and

wherein a maximum value of the power of the power supply which is higher than the continuous state of power and at which the increase in deterioration in the in-vehicle battery due to the power supply can be suppressed in a case where the power supply is performed for a short time, is defined as second state of power, and

further comprising controlling the power of the power supply in accordance with the first state of power, in a case where it is determined that the state of charge in the in-vehicle battery becomes the predetermined threshold value or lower before the charge start time during the power supply; and

controlling the power of the power supply in accordance with the second state of power, in a case where it is determined that the state of charge in the in-vehicle battery does not become the predetermined threshold value or lower before the charge start time during the power supply,

wherein a difference between a current actual state of charge in the in-vehicle battery and a target state of charge on an assumption that the power supply in accordance with the first state of power is continuously performed from a power supply start time at which the power supply is started is defined as a state of charge difference, and

further comprising controlling the power of the power supply in accordance with the first state of power, in a case where the state of charge difference is lower than a predetermined value during the power supply; and

controlling the power of the power supply in accordance with the second state of power, in a case where the state of charge difference is higher than or equal to the predetermined value during the power supply,

further comprising of power based on the state of charge in the in-vehicle battery; a temperature of the in-vehicle battery; and a time during which the power supply is performed in accordance with the second state of power.

5 . The non-transitory computer readable medium according to claim 4 ,

further comprising determining the first state of power based on a time from the reception time of the power supply request to the charge start time.

6 . The non-transitory computer readable medium according to claim 4 , further comprising restricting the state of charge in the in-vehicle battery to lower than or equal to the predetermined value before the charge start time and restrict the power of the power supply to be lower than or equal to a predetermined upper limit.