KR20140087407A - Parking management system and method thereof - Google Patents

Abstract

A parking management system according to an aspect of the present invention, which is capable of trading in power, comprises: a trade determining unit for determining whether to trade in power for an electric vehicle by using an estimated travel distance and a travelable distance of the electronic vehicle; a power selling unit for charging a battery for the electric vehicle with power stored in a power storage apparatus when the power is determined to be sold by the trade determining unit; and a power purchasing unit for discharging the power stored in the battery of the electric vehicle and storing the power in the power storage apparatus when the power is determined to be purchased by the trade determining unit.

Description

[0001] PARKING MANAGEMENT SYSTEM AND METHOD THEREOF [0002]

The present invention relates to a parking system, and more particularly, to a parking management system for managing parking of a car installed in a building parking lot or a public parking lot, and a management method thereof.

Demand for automobiles is explosively increasing along with industry development, and exhaust gas emitted from automobiles has become a major cause of environmental pollution.

In recent years, in order to reduce the exhaust gas emitted from automobiles, studies have been actively conducted on electric vehicles that do not generate exhaust gas, and they are being partially commercialized.

An electric vehicle is an automobile in which driving energy is obtained from electric energy, not fossil fuel, and there is an advantage that exhaust gas is not generated and noise is small. Such an electric vehicle is equipped with a battery capable of being charged as a power source to the vehicle itself, and is moved using electric power supplied from the mounted battery.

Generally, an electric vehicle is used in such a manner that electric power is charged to the battery in the home, and the electric power is further charged after parking in a building parking lot or a public parking lot.

Meanwhile, in recent years, the demand for electric power has increased, and the gap between day and night, season, and day has been gradually widening. When a peak load occurs, when many electric vehicles charge electric power in building parking lot or public parking lot, There is a problem that the burden becomes large.

SUMMARY OF THE INVENTION It is a general object of the present invention to provide a parking management system and method for managing electric power between a home and a building using an electric vehicle.

It is another object of the present invention to provide a parking management system and a management method thereof that can efficiently use electric power.

According to an aspect of the present invention, there is provided a parking management system comprising: a transaction-status determination unit that determines whether an electric vehicle is to be operated in an electric vehicle using an estimated travel distance and a travelable distance of the electric vehicle; A power sales unit for charging the battery of the electric vehicle with electric power stored in the electric power storage device when the electric power sale is determined by the transaction determination unit; And a power purchasing unit for discharging the electric power stored in the battery of the electric vehicle and storing the electric power in the electric power storage device when the electric power purchase is determined by the transaction determination unit.

According to another aspect of the present invention, there is provided a parking management system including: a power storage device including at least one battery for storing electric power; A power trading judgment server for determining a power trading for the electric vehicle by using an expected traveling distance and a traveling possible distance of the electric vehicle; And a vehicle charging device for supplying electric power stored in the electric power storage device to the battery of the electric vehicle under the control of the electric power transaction judging server or supplying electric power stored in the battery of the electric vehicle to the electric power storage device.

According to the present invention, surplus electric power stored in a battery can be purchased from an electric vehicle and stored in the electric power storage device, and electric power stored in the electric power storage device can be supplied to a load or a period electric power network, The power can be supplied to the emergency load even in an emergency such as a power failure of the power grid.

In addition, a driver of an electric vehicle has a different effect of improving power utilization efficiency and efficiency by supplying electric power generated by a wind turbine or a solar generator in a home to a third place, .

Further, the driver of the electric vehicle has another effect that the electric power is charged to the electric vehicle at a time when the electric power charge is low in the home, and the electric power stored in the electric vehicle is sold at a time when the electric power charge is expensive.

In addition, the building manager has another effect that the electric power purchased from the electric vehicle can be sold to the electric power grid to obtain the transaction intermediary profit.

1 is a schematic view of a power trading network configuration.
Fig. 2 is a configuration diagram illustrating the parking management system of Fig. 1; Fig.
3 is a block diagram illustrating the power transaction determination server of FIG.
Fig. 4 is a configuration diagram for explaining the travelable distance determination unit of Fig. 3; Fig.
5 is a view for explaining an example of a power transaction between an electric vehicle and a parking management system.
6 is a view for explaining an example of power trading by time zone between the electric vehicle and the parking management system.
7 is a flowchart illustrating a parking management method according to an embodiment of the present invention.
8 is a flowchart for explaining a travelable distance calculation method according to an embodiment of the present invention.
9 is a flowchart illustrating a method of selling electric power to an electric vehicle according to an embodiment of the present invention.
10 is a flowchart illustrating a method of purchasing electric power in an electric vehicle according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic view of a power trading network configuration.

Referring to FIG. 1, the power trading network 100 comprises a home, a building, and a power grid. At this time, the power trading network 100 uses the electric vehicle 110 to perform electric power trading between the home, the building, and the main power grid.

More specifically, the electric vehicle 110 charges the battery in the home and moves to the building parking lot. At this time, the electric vehicle 100 may charge the electric power produced by the photovoltaic generator 112 or the wind power generator 114 installed in the house in the battery through the electric power storage device 116 or supply the electric power from the system Can be charged to the battery.

A parking management system (120) for managing a building parking lot performs electric power trading for an electric vehicle (110) parked in a building parking lot. Specifically, the parking management system 120 purchases electric power stored in the battery from the electric vehicle 110 or sells electric power stored in the electric power storage device 126 to the electric vehicle 110. [

The parking management system 120 stores the electric power purchased from the electric vehicle 110 in the electric power storage device 126 and sells electric power to the electric power network during the period when the peak load occurs, When power is supplied to the emergency load of the building.

On the other hand, the parking management system 120 charges the electric vehicle 110 with the parking fee reflecting the electric power transaction fee when the electric vehicle 110 leaves the building parking lot.

Hereinafter, the parking management system 120 will be described in more detail with reference to FIG.

2 is a block diagram illustrating a parking management system according to an embodiment of the present invention.

1 and 2, a parking management system 120 according to an exemplary embodiment of the present invention is installed in a building or a public parking lot and includes a vehicle charging device 122, a power trading determination server 124, A device 126, a car number recognition device 128, a toll settlement device 130 and a power metering device 132. [

The vehicle charging device 122 is a device that is connected to the electric vehicle 110 and supplies electric power to the electric vehicle 110 or the electric power storage device 126 under the control of the electric power trading judgment server 124. [

Specifically, the vehicle charging device 122 charges the battery of the electric vehicle 110 with the electric power stored in the electric power storage device 126 by the electric power transaction determination server 124, or the electric power stored in the battery of the electric vehicle 110 To the power storage device 126.

Next, the power trading judgment server 124 judges whether or not the electric vehicle 110 is powered by using the estimated travel distance and the travelable distance of the electric vehicle 110, .

Hereinafter, the power trading judgment server 124 will be described in detail with reference to FIG.

3, the power trading determination server 124 includes an expected travel distance input unit 210, a travelable distance determination unit 220, a transaction determination unit 230, a power sales unit 240, a power purchase unit 250, And a time allocation database 260.

First, the predicted movement distance input unit 210 receives the estimated movement distance of the electric vehicle 110 from the user.

Next, the travelable distance determination unit 220 confirms the travelable distance of the electric vehicle 110. Hereinafter, the travelable distance determination unit 220 will be described in detail with reference to FIG.

FIG. 4 is a configuration diagram illustrating the travelable distance checking unit of FIG. 3;

Referring to FIG. 4, the travelable distance checking unit 220 includes a vehicle information requesting unit 310, a vehicle information receiving unit 320, an average fuel economy calculating unit 330, and a travelable distance calculating unit 340.

The vehicle information requesting unit 310 transmits a vehicle information request to the electric vehicle 110. [ The vehicle information includes at least one of current charge amount information of a battery installed in the electric vehicle 110, capacity information, driving fuel efficiency information, and charging cost information.

The average fuel economy calculating unit 330 calculates an average fuel consumption of the electric vehicle 110 using the vehicle information received through the vehicle information receiving unit 320. [ Specifically, the average fuel economy calculating unit 330 extracts driving fuel efficiency information of a past period from the present in the driving fuel efficiency information, and averages the extracted driving fuel efficiency information to calculate an average fuel efficiency.

For example, the average fuel economy calculating unit 330 may extract the driving fuel efficiency information for the last three days, and average the fuel efficiency of the extracted driving fuel efficiency information to calculate the average fuel efficiency.

The travelable distance calculation unit 340 calculates the travelable distance of the electric vehicle 110 using the average fuel consumption amount calculated by the average fuel economy calculation unit 330 and the current charge amount information of the battery.

In FIG. 4, the travelable distance is calculated using the average fuel consumption of the electric vehicle 110, but in another embodiment, the minimum fuel consumption of the electric vehicle 110 may be used.

Referring again to FIG. 3, the transaction decision unit 230 decides whether or not to perform electric power trading for the electric vehicle 110 using the estimated travel distance and the travelable distance.

Specifically, the transaction decision unit 230 compares the estimated travel distance and the travelable distance, and determines whether or not the electric vehicle 110 is to be powered on according to the comparison result.

The transaction determination unit 230 determines the sales of electric power to the electric vehicle 110 if the estimated travel distance is greater than the travelable distance. On the other hand, the transaction decision unit 230 decides to purchase electric power for the electric vehicle 110 if the estimated travel distance is smaller than the travelable distance.

Next, when the electric power sale to the electric vehicle 110 is determined by the transaction decision unit 230, the electric power sale unit 240 charges the electric power stored in the electric power storage device 126 to the electric vehicle 110. [

The power sales unit 240 includes a sales amount calculation unit 242, a charging time confirmation unit 244, a sales time allocation unit 246 and a first control unit 248.

The sales amount calculation unit 242 calculates the sales amount of the electric power using at least one of the estimated travel distance, the travelable distance, the driving fuel consumption information, and the present charging amount of the battery mounted on the electric vehicle 110. [

In one embodiment, the sales amount calculation unit 242 can calculate the sales amount of electric power using the estimated travel distance and the travelable distance. Specifically, the sales amount calculating section 242 can calculate the first distance by subtracting the travelable distance from the expected travel distance. Then, the sales amount calculation unit 242 can calculate the sales amount of electric power using the first distance and mileage information.

In one embodiment, the sales amount calculation unit 242 can calculate the sales amount of electric power by dividing the first distance by the average fuel efficiency of the electric vehicle 110. [ The sales amount calculating unit 242 can obtain the average fuel efficiency of the electric vehicle 110 by extracting the running fuel efficiency information of the past period from the present in the running fuel efficiency information and averaging the extracted running fuel efficiency information.

In another embodiment, the sales amount calculation section 242 can calculate the sales amount of electric power by dividing the first distance by the minimum fuel consumption of the electric vehicle 110. [ The sales amount calculating unit 242 can obtain the minimum fuel consumption of the electric vehicle 110 by extracting the driving fuel consumption information of the past certain period from the present in the driving fuel consumption information and checking the minimum fuel consumption in the extracted driving fuel consumption information.

In one embodiment, the sales amount calculation unit 242 can calculate the sales amount of the electric power using the estimated travel distance and the present charge amount of the battery mounted on the electric vehicle 110. [ Specifically, the sales amount calculating unit 242 calculates the necessary amount of electric power necessary for moving the anticipated movement distance by dividing the anticipated movement distance by the average fuel consumption or the minimum fuel consumption, and calculates the difference between the calculated required electric energy and the presently charged amount of the battery, .

Meanwhile, the sales amount calculating unit 242 can correct the amount of sales of electric power according to the present charge amount of the battery mounted on the electric vehicle 110 and the capacity of the battery.

Specifically, the sales amount calculating unit 242 calculates the chargeable capacity by subtracting the present charge amount of the battery from the capacity of the battery, and if the calculated chargeable capacity is smaller than the electric power sales amount, can do.

Next, the charging time confirmation unit 244 confirms the charging time required to charge the electric vehicle 110 with electric power corresponding to the electric power sales amount.

Next, the sales time allocation unit 246 allocates the electric sales time to the electric vehicle 110 by using the electric power sales amount calculated by the sales amount calculation unit 242 and the electric power rate information by time slot.

Specifically, the sales time allocation unit 246 allocates time equivalent to the charging time to the power sales time using the electricity rate information by time slot.

In one embodiment, the sales time allocation unit 246 can allocate the power sales time in the order of time in which the power charge is low. For example, if the charging time period is five hours, the sales time allocation unit 246 may allocate five hours among the time periods in which the electricity rates are the lowest to the electric power sales time. If the lowest power hour is less than 5 hours, the sales time allocation unit 246 allocates a portion of the second lowest power time as the power sales time.

In another embodiment, the sales time allocation unit 246 can allocate the power sales time using the time-by-hour electricity rate information and the estimated time of departure of the electric vehicle 110. [ Here, the estimated release time is a time for the user to release the electric vehicle 110 from the parking lot, and can be inputted and stored in the parking management system 120 by the user.

At this time, the sales time allocation unit 246 can allocate the power sales time in the order of the time period in which the electric power charges are low within the time interval from the present time to the estimated time of leaving goods. For example, if the required charging time is 3 hours and the estimated time to leave is 5 hours or more after the current time, the sales time allocation unit 246 allocates 3 hours of the lowest power hour in the 5 hour period from the current time to the power sales time . ≪ / RTI >

In another embodiment, the sales time allocation unit 246 may allocate the power sales time using the electricity price information and the electricity demand information by the time slot. Here, the electric power demand information includes electric power demand amount per time consumed in the building where the parking management system 120 is installed.

At this time, the sales time allocation unit 246 may allocate the power sales time in the order of the time period in which the power demand is lower than the first reference value. That is, the sales time allocation unit 246 may not allocate the sales time to the electric vehicle 110 if the electric power demand amount is equal to or greater than the first reference value even in a time zone in which the electric power charge is low. Accordingly, the parking management system 120 can supply electric power to the electric vehicle 110 within a range that does not burden the electric power consumed in the building.

Meanwhile, the sales time allocation unit 246 stores the allocated power sale time information in the time allocation database 260 by matching with the electric vehicle identification information or the vehicle charging apparatus identification information. Here, the electric vehicle identification information is information for identifying the electric vehicle 110, including the car number, and can be obtained through the car number identification device 128. [ The vehicle charger identification information is information for identifying the vehicle charger 122 connected to the electric vehicle 110, and may include an identification code previously assigned by the manager.

Next, the first control unit 248 controls the operation of the vehicle charging device 122 using the power sale time information stored in the time allocation database 260. [

Specifically, when the first control unit 248 reaches the time corresponding to the power sales time information, the first control unit 248 controls the operation of the vehicle charging device 122 to transmit the electric power stored in the electric power storage device 126 to the battery .

On the other hand, the first control unit 248 stops the operation of the vehicle charging device 122 when the time corresponding to the power sales time information has elapsed.

The power purchase unit 250 then discharges the electric power stored in the electric vehicle 110 and supplies the electric power to the electric power storage device 126 when the electric vehicle 110 is determined to be purchased by the transaction decision unit 230 .

The power purchase unit 250 includes a purchase amount calculation unit 252, a discharge time confirmation unit 254, a purchase time allocation unit 256, and a second control unit 258.

The purchase amount calculating unit 252 calculates the power purchase amount by using at least one of the estimated travel distance, the travelable distance, the mileage information of the mileage, and the present charge amount of the battery mounted on the electric vehicle 110. [

In one embodiment, the purchase amount calculation unit 252 can calculate the power purchase amount using the estimated travel distance and the travelable distance. Specifically, the purchase amount calculation unit 252 can calculate the second distance by subtracting the expected travel distance from the travelable distance. Then, the purchase amount calculating section 252 can calculate the power purchase amount using the second distance and the driving fuel consumption information.

In one embodiment, the purchase amount calculation unit 252 can calculate the power purchase amount by dividing the second distance by the average fuel efficiency of the electric vehicle 110. [ The purchase amount calculation unit 252 can obtain the average fuel efficiency of the electric vehicle 110 by extracting the driving fuel consumption information of the past period from the present in the driving fuel consumption information and averaging the extracted driving fuel consumption information.

In one embodiment, the purchase amount calculation unit 252 can calculate the power purchase amount using the estimated travel distance and the present charge amount of the battery mounted on the electric vehicle 110. [ Specifically, the purchase amount calculating section 252 calculates the required amount of power required for moving the estimated travel distance by dividing the estimated travel distance by the average fuel mileage or the minimum fuel mileage, and calculates the difference between the calculated required power amount and the presently charged amount of the battery, .

On the other hand, the purchase amount calculating unit 252 can prevent the parking management system 120 from purchasing power from the electric vehicle 110 by correcting the electric power purchase amount to 0 if the electric power purchase amount is smaller than the minimum purchase threshold value.

Next, the discharge time confirmation unit 254 confirms the discharge time required for the electric vehicle 110 to discharge electric power corresponding to the electric power purchase amount.

Next, the purchase time allocation unit 256 allocates the power purchase time to the electric vehicle 110 using the electric power purchase amount calculated by the purchase amount calculation unit 252 and the electric power charge information by time slot.

Specifically, the purchase time allocating unit 256 allocates a time equivalent to the discharge required time to the power purchase time using the power charge information by time slot.

In one embodiment, the purchase time allocation unit 256 may allocate the power purchase time in order of time when the power charges are high. For example, if the required discharge time is five hours, the purchase time allocation unit 256 can allocate five hours of the highest power rate to the power purchase time. If the time zone in which the electricity rate is highest is less than 5 hours, the purchase time allocation unit 256 allocates a part of the second highest electricity price as the electricity purchase time.

In another embodiment, the purchase time allocation unit 256 can allocate the power purchase time using the time-based power charge information and the estimated time of leaving the electric vehicle 110. [ Here, the estimated release time is a time for the user to release the electric vehicle 110 from the parking lot, and can be inputted and stored in the parking management system 120 by the user.

At this time, the purchase time allocation unit 256 can allocate the power purchase time in the order of time in which the power charges are high within the time period from the current time to the estimated time of leaving the warehouse. For example, if the required discharge time is 3 hours and the estimated time to leave is 5 hours or later from the current time, the purchase time allocation unit 256 allocates 3 hours of the highest power rate in the 5 hour period from the current time to the power purchase time . ≪ / RTI >

In another embodiment, the purchase time allocation unit 256 may allocate the power purchase time using the power charge information and the power demand information for each time slot. Here, the electric power demand information includes electric power demand amount per time consumed in the building where the parking management system 120 is installed.

At this time, the purchase time allocating unit 256 can allocate the power purchase time in the time zone in which the electric power demand is higher than the second reference value. That is, the purchase time allocation unit 256 not only can reduce the peak load occurring in the building by purchasing power from the electric vehicle 110 at a time when the electric power demand amount is equal to or greater than the second reference value, May be provided or sold.

Meanwhile, the purchase time allocation unit 256 stores the allocated power purchase time information in the time allocation database 260 by matching with the electric vehicle identification information or the vehicle charging apparatus identification information.

Next, the second controller 258 controls the operation of the vehicle charging device 122 using the power purchase time information stored in the time allocation database 260. [

Specifically, when the second controller 258 reaches the time corresponding to the power purchase time information, the second controller 258 controls the operation of the vehicle charging device 122 to discharge the electric power stored in the battery of the electric vehicle 110, 126.

On the other hand, the second controller 258 stops the operation of the vehicle charging device 122 when the time corresponding to the power purchase time information has elapsed.

Referring again to FIG. 2, the power storage device 126 stores the power supplied through the vehicle charging device 122, or supplies the stored power to the electric vehicle 110 through the vehicle charging device 122.

In addition, the power storage device 126 may store the power supplied from the period power network, or may supply the stored power to the period power network or the in-building load.

Next, the electric power metering device 132 calculates the electric power transaction amount for the electric power transaction when electric power is exchanged between the electric vehicle 110 and the parking management system 120.

Specifically, the power metering device 132 measures the amount of electric power charged in the electric vehicle 110 when electric power is charged in the battery of the electric vehicle 110 through the vehicle charging device 122, And the power price information.

The power metering device 132 measures the amount of electric power discharged from the electric vehicle 110 when the electric power stored in the battery of the electric vehicle 110 is discharged through the vehicle charging device 122, And the electricity price information.

Here, the power price information is determined in advance by the manager, and the difference may be determined differently from time to time, or may be determined based on the electric power charge information provided by the electric power network.

On the other hand, the electric power metering device 132 provides the calculated electric power sales amount or the electric power purchase amount to the charge setting device 130. [

Next, the car number recognizing device 128 recognizes the car number of the electric car 110 and generates electric car identification information. Then, the car number recognizing device 128 provides the electric car identification information to the charge setting device 130. [

Next, the fare settling apparatus 130 sets the fare for the electric vehicle 110 to be settled. At this time, the charge settlement apparatus 130 calculates the charge for the electric vehicle 110 by reflecting the electric transaction amount to the parking money amount.

More specifically, when the parking management system 120 purchases electric power from the electric vehicle 110, the charge setting device 130 subtracts the electric power purchase amount provided from the electric power metering device 132 to the parking money amount, ).

 On the other hand, when the parking management system 120 sells electric power to the electric vehicle 110, the charge setting device 130 adds the electric power sales amount provided from the electric power metering device 132 to the parking money amount, To calculate the charge for.

In FIG. 2, the vehicle charging apparatus 122 and the charge settlement apparatus 130 are implemented as separate apparatuses, but they may be implemented as one apparatus in another embodiment.

5A and 5B are diagrams for explaining an example of a power transaction between an electric vehicle and a parking management system.

Hereinafter, an example in which the parking management system 120 purchases electric power from the electric vehicle 110 will be described with reference to FIG. 5A.

It is assumed that the first electric vehicle 110a charges electric power to the battery at 100% at home.

The first electric vehicle 110a moves from the home to the building using electric power corresponding to 40% of the battery capacity, and is parked in the building parking lot.

The parking management system 120 recognizes the first electric vehicle 110a parked in the building parking lot, and receives the estimated travel distance from the driver. At this time, if the driver inputs the distance from the building to the home as the estimated travel distance, the parking management system 120 can compare the estimated travel distance and the travelable distance to decide whether or not to perform power trading.

At this time, the parking management system 120 uses the present charge amount of the battery mounted on the first electric vehicle 110a to determine the travelable distance. The first electric vehicle 110a has a capacity corresponding to 60% of the battery capacity It can be determined that the travelable distance is larger than the expected travel distance because the electric power is charged. Accordingly, the parking management system 120 can determine the purchase of electric power for the first electric vehicle 110a.

The parking management system 120 determines that the electric power corresponding to 40% of the battery capacity is required for the first electric vehicle 110a to move the anticipated moving distance, and calculates the electric power corresponding to 20% 510).

The parking management system 120 may discharge the electric power corresponding to the electric power purchase amount 510 from the first electric vehicle 110a and store the electric power in the electric power storage device 126. [

Hereinafter, an example in which the parking management system 120 sells electric power to the electric vehicle 110 will be described with reference to FIG. 5B.

It is assumed that the second electric vehicle 110b charges electric power to the battery at 60% at home.

The second electric vehicle 110b moves from the home to the building using electric power equivalent to 40% of the battery capacity, and is parked in the building parking lot.

The parking management system 120 recognizes the second electric vehicle 110b parked in the building parking lot, and receives the estimated travel distance from the driver. At this time, if the driver inputs the distance from the building to the home as the estimated travel distance, the parking management system 120 can compare the estimated travel distance and the travelable distance to decide whether or not to perform power trading.

At this time, the parking management system 120 determines the travelable distance by using the present charge amount of the battery mounted on the second electric vehicle 110b. In the second electric vehicle 110b, 20% It can be determined that the travelable distance is smaller than the expected travel distance because the electric power is charged. Accordingly, the parking management system 120 can determine the sale of electric power to the second electric vehicle 110b.

At this time, the parking management system 120 determines that the electric power corresponding to 40% of the battery capacity is required for the second electric vehicle 110b to move the anticipated moving distance, and transmits electric power corresponding to 20% The sales amount 520 can be determined.

The parking management system 120 charges the battery of the second electric vehicle 110b with electric power corresponding to the electric power sales amount 520 among the electric power stored in the electric power storage device 126. [

6 is a view for explaining an example of power trading by time zone between the electric vehicle and the parking management system.

First, an example in which the parking management system 120 purchases electric power from the electric vehicle 110 by time slot will be described.

The parking management system 120 checks the time required for discharging electric power corresponding to the amount of electric power purchased by the first electric vehicle 110a when electric power purchase is determined for the first electric vehicle 110a, It is possible to allocate the time equivalent to the discharge time to the power purchase time using the electric charge information.

At this time, the parking management system 120 can allocate the power purchase time in the order of time when the electric power charges are high.

For example, it is assumed that the discharge time for the first electric vehicle 110a is 5 hours, and the first electric vehicle 110a enters the building parking lot at 7:00. 6, the parking management system 120 can allocate power purchase time from 11:00 to 12:00 and 13:00 to 17:00, which are the highest power rates.

Accordingly, the parking management system 120 waits until 11 o'clock from the time when the first electric vehicle 110a is parked, and then operates the vehicle charging device 122 at 11 o'clock so that the first electric vehicle 110a And can supply the discharged electric power to the electric power storage device 126. Then, the parking management system 120 can stop the operation of the vehicle charging device 122 after 12 hours have elapsed.

The parking management system 120 waits from 12 o'clock to 13 o'clock and then operates the vehicle charging device 122 at 13 o'clock to discharge the electric power discharged from the first electric vehicle 110a to the electric power storage device 126. [ And when 17 o'clock has elapsed, the operation of the vehicle charging device 122 can be stopped.

Next, an example in which the parking management system 120 sells electric power to the electric vehicle 110 by time slot will be described.

The parking management system 120 checks the charging time required for charging the second electric vehicle 110b with electric power corresponding to the amount of electric power sales when the electric power sale to the second electric vehicle 110b is determined, The time equivalent to the charging time can be allocated to the electricity sales time using the charge information.

At this time, the parking management system 120 can allocate the power sales time in the order of the time when the electric power charges are low. At this time, the parking management system 120 can allocate the power sales time based on the expected time of leaving the second electric vehicle 110b.

For example, it is assumed that the charging time for the second electric vehicle 110b is 5 hours, the arrival time for the second electric vehicle 110b is 7:00, and the estimated time for leaving the vehicle is 13:00.

6, the parking management system 120 can allocate the power sales time from 7:00 to 9:00, which is the lowest power rate.

However, since the parking management system 120 has charged electric power to the second electric vehicle 110b for only 2 hours during the charging time of 5 hours, it selects 3 hours from 9:00 to 13:00, .

The parking management system 120 may allocate the power sale time as 9:00 to 11:00 and the 12:00 to 13:00 as the second lowest power rate.

Accordingly, the parking management system 120 can supply the electric power supplied from the electric power storage device 126 to the second electric vehicle 110a by operating the vehicle charging device 122 at the time when the second electric vehicle 110b is parked Can be charged. Then, the parking management system 120 can stop the operation of the vehicle charging device 122 after the lapse of 11 o'clock.

The parking management system 120 waits from 11 o'clock to 12 o'clock and operates the vehicle charging device 122 at 12 o'clock to charge the electric power supplied from the electric power storage device 126 to the second electric vehicle 110b . Then, the parking management system 120 can stop the operation of the vehicle charging device 122 after 13 hours have elapsed.

7 is a flowchart illustrating a parking management method according to an embodiment of the present invention.

Referring to FIG. 7, the parking management system 120 recognizes the vehicle number of the electric vehicle 110 when the electric vehicle 110 is parked in the parking area, and generates electric vehicle identification information (S701).

Next, the parking management system 120 checks whether the electric vehicle 110 is connected to the vehicle charging device 122 (S702), and receives the estimated traveling distance of the electric vehicle 110 from the driver (S703).

Next, the parking management system 120 confirms the travelable distance of the electric vehicle 110 (S704).

8 is a flowchart for explaining a travelable distance calculation method according to an embodiment of the present invention.

Referring to FIG. 8, first, the parking management system 120 requests vehicle information from the electric vehicle 110 (S801). Here, the vehicle information includes at least one of current charge amount information, capacity information, running mileage information, and charge cost information of the battery installed in the electric vehicle 110. [

Next, when the parking management system 120 receives the vehicle information from the electric vehicle 110, the average mileage of the electric vehicle 110 is calculated using the received vehicle information (S802 and S803). Specifically, the parking management system 120 extracts the driving fuel consumption for the past predetermined period from the present time, and calculates the average fuel efficiency by averaging the extracted driving fuel consumption.

Next, the parking management system 120 calculates the travelable distance of the electric vehicle 110 using the average fuel consumption and the charge amount information of the battery (S804).

Referring again to FIG. 7, the parking management system 120 determines whether to purchase electric power for the electric vehicle 110 using the estimated travel distance and the travelable distance.

If the estimated travel distance is greater than the travelable distance, the parking management system 120 determines the sale of electric power to the electric vehicle 110 (S705 and S707). On the other hand, if the estimated travel distance is smaller than the travelable distance, the parking management system 120 determines power purchase for the electric vehicle 110 (S705, S706, and S708).

9 is a flowchart illustrating a method of selling electric power to an electric vehicle according to an embodiment of the present invention.

Referring to FIG. 9, the parking management system 120 calculates the amount of power sales using at least one of the estimated travel distance, the travelable distance, and the vehicle information (S901).

In one embodiment, the parking management system 120 may calculate the power sales volume using the estimated travel distance and the travelable distance. Specifically, the parking management system 120 calculates the first distance by subtracting the travelable distance from the expected travel distance, and divides the first distance by the average fuel mileage or the minimum fuel mileage of the electric vehicle 110 to calculate the electric power sales amount .

Here, the average fuel consumption may correspond to the average value of the driving fuel consumption during the past predetermined period from the present. The minimum fuel consumption may correspond to the minimum of the driving fuel consumption of the past period from the present.

In another embodiment, the parking management system 120 may calculate the power sales volume using the anticipated travel distance and the current charge amount of the battery mounted on the electric vehicle 110. [ Specifically, the parking management system 120 calculates the required amount of power required to move the expected travel distance by dividing the estimated travel distance by the minimum fuel mileage, and determines the difference between the calculated required amount of power and the presently charged amount of the battery as the amount of power sales have.

Next, the parking management system 120 confirms the charging time required to charge the electric vehicle 110 with electric power corresponding to the amount of electric power sales (S902).

Next, the parking management system 120 allocates the time equivalent to the charging time to the electricity sales time using the electricity rate information by the time slot (S903).

In one embodiment, the parking management system 120 may allocate power sales time in order of time when the power charges are low. Specifically, the parking management system 120 can identify a first time period having the lowest electric power charge and allocate a time corresponding to the charging time period as the electric power sales time during the first time period. At this time, if the first time period in which the electric power charge is the lowest is smaller than the charge time period, the parking management system 120 checks the second time period in which the electric power charge is the second lowest, Can be assigned to the power sales time.

In another embodiment, the parking management system 120 may allocate power sale time using time zone power rate information and estimated time of departure of the electric vehicle 110. [ At this time, the parking management system 120 can allocate the power sales time in the order of the time period in which the electric power charge is low within the time interval from the present time to the estimated time of goods leaving. Here, the estimated release time is a time for the user to release the electric vehicle 110 from the parking lot, and can be inputted and stored in the parking management system 120 by the user.

On the other hand, the parking management system 120 stores the power sales time information allocated to the electric vehicle 110 in the database (S904). At this time, the parking management system 120 stores the electricity sales time information and the electric vehicle identification information or the vehicle charging device identification information in a database.

Next, the parking management system 120 operates the vehicle charging device 122 to charge the battery of the electric vehicle 110 with the electric power stored in the electric power storage device 126 (S905 and S906). Then, the parking management system 120 measures the amount of electric power charged in the electric vehicle 110 (S907).

The parking management system 120 repeats S905 to S907 until the electric vehicle 110 is disconnected from the vehicle charging device 122 (S908).

Next, when the electric vehicle 110 is disconnected from the vehicle charging device 122, the parking management system 120 calculates the amount of electric power sales using the charging electric power amount and electric power price information (S909).

10 is a flowchart illustrating a method of purchasing power from an electric vehicle according to an embodiment of the present invention.

Referring to FIG. 10, the parking management system 120 calculates a power purchase amount using at least one of an estimated travel distance, a travelable distance, and vehicle information (S1001).

In one embodiment, the parking management system 120 may calculate the power purchase amount using the estimated travel distance and the travelable distance. Specifically, the parking management system 120 can calculate the power purchase amount by calculating the second distance by subtracting the expected travel distance from the travelable distance, and dividing the second distance by the average fuel mileage of the electric vehicle 110. [

In another embodiment, the parking management system 120 may calculate the power purchase amount using the estimated travel distance and the current charge amount of the battery mounted on the electric vehicle 110. [ Specifically, the parking management system 120 calculates the required amount of power required to move the expected travel distance by dividing the estimated travel distance by the minimum fuel mileage, and determines the difference between the calculated required power amount and the present charged amount of the battery as the power purchase amount have.

On the other hand, if the power purchase amount is smaller than the minimum purchase threshold value, the parking management system 120 can correct the power purchase amount to zero.

Next, the parking management system 120 confirms the discharge time required for discharging the electric power corresponding to the electric power purchase amount from the electric vehicle 110 (S1002).

Next, the parking management system 120 allocates the time equivalent to the discharge time to the power purchase time using the electricity rate information by time slot (S1003).

In one embodiment, the parking management system 120 may allocate power purchase time in order of time when the power charges are high. Specifically, the parking management system 120 can identify a first time period having the highest electric power charge, and assign a time corresponding to the discharge required time to the electric power purchase time in the first time period that has been confirmed. At this time, if the first time period in which the electric power charge is the highest is smaller than the discharge required time, the parking management system 120 checks the second highest time period of the electric power charge, Can be allocated to the power purchase time.

In another embodiment, the parking management system 120 may allocate power purchase time using time-slot power rate information and estimated time of departure of the electric vehicle 110. [ At this time, the parking management system 120 can allocate the power sales time in the time zone from the present time to the estimated time of departure in the order of time in which the electric power charges are high.

Meanwhile, the parking management system 120 stores the power purchase time information allocated to the electric vehicle 110 in the database (S1004). At this time, the parking management system 120 stores the electric power purchase time information and the electric vehicle identification information or the vehicle charging device identification information in a database.

Next, when the parking management system 120 reaches the power purchase time, the vehicle charging device 122 is operated to discharge the electric power stored in the battery of the electric vehicle 110 and supply it to the electric power storage device 126 (S1005 and S1006 ). Then, the parking management system 120 measures the amount of electric power discharged from the electric vehicle 110 (S1007).

The parking management system 120 repeats S1005 to S1007 until the electric vehicle 110 is disconnected from the vehicle charging device 122 (S1008).

Next, when the electric vehicle 110 is disconnected from the vehicle charging device 122, the parking management system 120 calculates the electric power purchase amount using the discharge electric power amount and electric power price information (S1009).

Referring again to FIG. 7, the parking management system 120 calculates the charge for the electric vehicle 110 by reflecting the electric transaction amount to the parking money amount (S709).

Specifically, when electric power is purchased from the electric vehicle 110, the parking management system 120 calculates the charge for the electric vehicle 110 by subtracting the electric power purchase amount from the parking money amount.

On the other hand, when selling electric power to the electric vehicle 110, the parking management system 120 calculates the charge for the electric vehicle 110 by adding the electric power sales amount to the parking money.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit and scope of the present invention as set forth in the following claims It can be understood that

Claims (14)

A determination unit for determining whether or not the electric vehicle is to be powered on by using the estimated travel distance and the travelable distance of the electric vehicle;
A power sales unit for charging the battery of the electric vehicle with electric power stored in the electric power storage device when the electric power sale is determined by the transaction determination unit; And
And a power purchase unit for discharging electric power stored in the battery of the electric vehicle and storing the electric power in the electric power storage device when the electric power purchase is determined by the transaction determination unit. The apparatus according to claim 1,
Determines the purchase of electric power for the electric vehicle if the travelable distance is larger than the estimated travel distance, and determines the electric power sale to the electric vehicle if the travelable distance is smaller than the predicted travel distance Parking management system. The method according to claim 1,
A vehicle information receiving unit for receiving current charge amount information and running mileage information of the battery mounted on the electric vehicle from the electric vehicle; And
Further comprising a travelable distance calculation unit for calculating an average fuel consumption for the electric vehicle using the driving fuel consumption information and calculating the travelable distance using the calculated average fuel consumption and the charged amount information of the battery Parking management system. The power supply system according to claim 1,
And a sales amount calculating unit for calculating an amount of electric power sales using at least one of the estimated travel distance, the travelable distance, the amount of charge of the battery mounted on the electric vehicle, and the driving mileage information. The power supply system according to claim 1,
Wherein the electric power selling time is determined by using the electric power sales amount and the electric power charge information by the time slot, and the electric power stored in the electric power storage device is charged to the electric vehicle at the determined electric power selling time. 6. The power supply system according to claim 5,
A charging time confirmation unit for confirming a charging time required for charging the electric vehicle with electric power corresponding to the electric power sales amount; And
And a sales time allocation unit that allocates a time corresponding to the charging time period to the power sales time in the order of the time when the power charge is low. The power supply apparatus according to claim 1,
And a purchase amount calculating unit for calculating a purchase amount of electric power by using at least one of the estimated travel distance, the travelable distance, the charged amount information of the battery mounted on the electric vehicle, and the driving fuel consumption information. The power supply apparatus according to claim 1,
The electric power purchase time is determined by using the electric power purchase amount and the electric power charge information by the time slot, and electric power is discharged from the electric car at the determined electric power purchase time. The power supply apparatus according to claim 8,
A discharge time confirmation unit for confirming a discharge time required for electric power corresponding to the electric power purchase amount to be discharged from the electric vehicle; And
And a power purchase time allocating unit for allocating a time equivalent to the discharge required time to the power purchase time in the order of the time when the power charge is high. 10. The method according to claim 9,
Extracting a first time period having the highest electric power charge within the estimated time of leaving the electric vehicle from the current time using the electric power charge information and allocating at least a part of the extracted first time period to the electric power purchase time Parking management system. The power supply apparatus according to claim 1,
And a controller for controlling the vehicle charging device to supply power stored in the electric vehicle to the electric power storage device during the electric power purchase time when the electric power purchasing time allocated to the electric vehicle is reached. A power storage device for storing power including at least one battery;
Determining whether to purchase electric power for the electric vehicle if the travelable distance is larger than the expected travel distance of the electric vehicle, and if the travelable distance is smaller than the estimated travel distance, A judgment server; And
And a vehicle charging device that supplies electric power stored in the electric power storage device to the battery of the electric vehicle under the control of the electric power transaction judging server or supplies electric power stored in the battery of the electric vehicle to the electric power storage device system. 13. The power trading system according to claim 12,
Allocating the power purchase time to the power purchase time in the order of the time in which the electric power charge is low using the electric power charge information by the time slot, and allocating the electric power sale time in the time order in which the electric power charge is high. 13. The method of claim 12,
A power metering device for measuring an amount of discharge electric power discharged from the electric vehicle or an amount of electric power charged in the electric vehicle and calculating a power transaction amount for the measured discharge electric energy or charged electric energy; And
Further comprising a charge settlement device for calculating a charge for the electric vehicle using the amount of parking for the electric vehicle and the electric power transaction amount, and for calculating the calculated charge.

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