KR102437948B1 - EV charging system using ESS - Google Patents

Abstract

The present invention relates to an electric vehicle charging system using an energy storage device. According to an embodiment of the present invention, a plurality of electric vehicle chargers that receive electric power from the outside, convert the incoming electric power to supply electric power for charging the electric vehicle; a plurality of energy storage devices receiving a portion of the electric power flowing into the electric vehicle charger and storing the electric power; It may include a charge management unit for controlling the energy storage device and the electric vehicle charger.

Description

Electric vehicle charging system using energy storage device {EV charging system using ESS}

The present invention relates to an electric vehicle charging system, and more particularly, to an electric vehicle charging system using an energy storage device in which charging efficiency is improved by using an energy storage system (ESS).

Recently, in the automobile industry, interest in electric vehicles (EVs) that obtain power from electricity instead of fossil fuels such as gasoline is increasing.

Since electric vehicles are driven by using electric energy stored in batteries rather than fossil fuels such as gasoline, they can be used as a powerful alternative to cope with the rise in oil prices due to depletion of fossil fuels, as well as exhaust emissions compared to gasoline or diesel vehicles. It is eco-friendly because it does not emit gas, and has the advantage of generating less noise.

However, electric vehicles have a relatively short mileage compared to vehicles using fuel such as gasoline or diesel, so they have to be charged that much, and there is a limitation in that it takes a lot of time to charge the vehicle's battery. It has not been put into practical use.

Currently, in order to charge the battery of an electric vehicle, a charging stand of a charging station corresponding to a gas station at a gas station is generally used. In other words, in order to charge an electric vehicle, an electric vehicle driver must directly visit a charging station equipped with a charging station such as a charging stand to charge the electric vehicle.

In order to respond to the increase in charging demand due to the spread of electric vehicles, it is necessary to expand the charging infrastructure, and charging methods for electric vehicles can be divided into slow chargers and rapid chargers.

First, the slow charger is a method of charging AC 220V or 380V electric energy supplied from a commercial AC power system after converting it into DC power using a charger mounted inside the vehicle.

A slow charger is a method of charging a capacity of about 7 kW for a long time, and development of a fast charger is in progress recently. One quick charger increases the power demand equivalent to about 10 slow chargers, and when a large number of quick chargers are installed, the power transmission and distribution facility capacity must be increased by that much, which can cause system power quality disturbance.

In addition, as electric vehicles become common, the need for a storage battery charging station such as a conventional gas station is emerging. In the construction of such a charging station, in order to charge a large number of electric vehicles in large places such as apartment and multi-house parking lots, company building parking lots, public facility parking lots, etc. in the existing downtown area, a large amount of power is required to charge electric vehicles will do

Such a technology is disclosed in Patent Publication No. 10-2019-0124032 (mobile charging system and method for electric vehicle).

Inefficiency in terms of time and cost of charging infrastructure construction due to the high installation cost due to the construction of additional transmission and distribution lines to obtain such power, the management facilities for managing and controlling the power supply, and the securing of a place for the construction of multiple charging stations There is this.

The present invention was invented to improve the above problems, and the problem to be solved by the present invention is to provide a charging system capable of charging an electric vehicle with high efficiency without adding additional equipment by utilizing an ESS.

The technical problem of the present invention is not limited to those mentioned above, and another technical problem not mentioned will be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, according to an electric vehicle charging system using an energy storage device according to an embodiment of the present invention, power is introduced from the outside, and a plurality of power sources are converted to supply electric power for charging the electric vehicle. electric vehicle charger; a plurality of energy storage devices receiving a portion of the electric power flowing into the electric vehicle charger and storing the electric power; It may include a charger control unit for controlling the energy storage device and the electric vehicle charger.

In addition, the electric vehicle charger may include an AC/DC converter that receives external power and converts alternating current into direct current; a DC output unit for converting the DC current delivered from the AC/DC converting unit to match the voltage of the electric vehicle and outputting it; and a charger control unit for determining and controlling the state of the charger,

The energy storage device may include: a DC/DC converter configured to convert the voltage of the current transmitted from the AC/DC converter into a voltage suitable for charging the energy storage device; BMS for managing the energy storage device; It may include a battery unit for storing the current.

In addition, the charger control unit controls to first provide the power converted from the DC output unit within the voltage and current range required by the electric vehicle to be charged, and to provide the above voltage and current through the energy storage device, , The electric vehicle charger is connected to two or more of the plurality of energy storage devices, calculates the charging capacity of the electric vehicle to be charged, and controls to selectively charge power among the energy storage devices, but the amount of charge in the energy storage device It is possible to preferentially use the one with more than 80%, and stop using it when the charge falls below 20%.

In addition, the electric vehicle charger may include: a photographing unit for photographing a vehicle entering a charging area; an watt-hour detection unit configured to detect an amount of watt-hour supplied to a vehicle entering the charging area through a watt-hour meter installed in the electric vehicle charger; a disturbance determination unit for determining whether a vehicle entering the charging area is a charging obstruction vehicle using the photographing information photographed through the photographing unit and the electric energy change information detected through the electric energy sensing unit; and an output unit configured to output notification information for a request to take out to the charging area when the vehicle is determined to be a charging interference vehicle through the disturbance determination unit.

The interference determining unit may include: a photographing information receiving unit configured to receive the photographing information; and a wattage change information receiving unit for receiving the wattage change information, primarily determining whether a vehicle is charging impeded through the license plate color of the vehicle included in the shooting information, and charging using the wattage change information for a preset standby time Depending on the state, it may be determined whether the vehicle is charging intrusive or not.

In addition, the interference determination unit, if the color of the license plate is not blue, determines that the vehicle is primarily a charging obstruction, and if there is no change in the amount of power during the standby time, it can be determined as a secondary charging obstruction vehicle.

In addition, the interference determination unit, if the color of the license plate is not blue, it is determined that the vehicle is primarily a charging obstruction, but when a change in the amount of power is detected during the standby time, it can be determined as an electric vehicle.

In addition, the interference determination unit, even though the color of the license plate is blue, if there is no detection of a change in the amount of power during the standby time, it may be determined as a charging obstruction vehicle.

The details of other embodiments are included in the detailed description and drawings.

According to the electric vehicle charging system according to an embodiment of the present invention, there is an effect of reducing the maintenance cost by using the energy storage device to charge the electric power required for the electric vehicle without replacing a separate charger.

The effects of the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

1 is a view showing the configuration of an electric vehicle charging system according to an embodiment of the present invention.
2 is a view showing a state in which an electric vehicle is parked in the electric vehicle charging system according to an embodiment of the present invention.
3 is a view showing the configuration of a control unit constituting an embodiment of the present invention.
4 is a flowchart showing an operating method of a charging system according to an embodiment of the present invention.
5 is a view sequentially showing a method for detecting a charging obstruction vehicle according to an embodiment of the present invention.
6 is a view showing a settlement step according to another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings to the extent that those of ordinary skill in the art to which the present invention pertains can easily practice the present invention.

In describing the embodiments, descriptions of technical contents that are well known in the technical field to which the present invention pertains and are not directly related to the present invention will be omitted. This is to more clearly convey the gist of the present invention by omitting unnecessary description.

For the same reason, some components are exaggerated, omitted, or schematically illustrated in the accompanying drawings. In addition, the size of each component does not fully reflect the actual size. In each figure, the same or corresponding elements are assigned the same reference numerals.

Also, device or element orientation (eg "front", "back", "up", "down", "top", "bottom") The expressions and predicates used herein with respect to terms such as ", "left", "right", "lateral", etc. are used merely to simplify the description of the invention, and the associated apparatus Or it will be appreciated that it does not simply indicate or imply that an element must have a particular orientation.

Hereinafter, an electric vehicle charging system using an energy storage device according to an embodiment of the present invention will be described with reference to the drawings.

1 is a view showing the configuration of an electric vehicle charging system 10 according to an embodiment of the present invention.

The electric vehicle charging system 10 according to the present invention includes: a plurality of electric vehicle chargers 100 that receive electric power from the outside and supply electric power for charging electric vehicles by converting the introduced electric power; a plurality of energy storage devices 200 for receiving a portion of the electric power flowing into the electric vehicle charger 100 and storing the electric power; It may include a charge management unit 300 that controls the energy storage device 200 and the electric vehicle charger 100 .

The biggest key of the present invention is to operate the energy storage device 200 together when operating the electric vehicle charger 100 . It is configured to charge the energy storage device 200 and, if necessary, operate it together with the electric vehicle charger 100 to increase efficiency without adding a separate facility.

In addition, the electric vehicle charger 100 includes an AC/DC converter 110 that receives external power and converts alternating current into direct current; a DC output unit 170 and 120 for converting the DC current delivered from the AC/DC conversion unit 110 to match the voltage of the electric vehicle and outputting it; and a charger controller 130 for determining and controlling the state of the charger, wherein the energy storage device 200 converts the voltage of the current delivered from the AC/DC converter 110 to the energy storage device 200 ) DC/DC conversion unit 210 for converting a voltage suitable for charging; BMS for managing the energy storage device (200); It may include a battery unit 230 for storing the current.

The AC/DC converter 110 receives the AC current delivered from the KEPCO system and converts it into a DC current for charging an electric vehicle. The DC current converted through the AC/DC conversion unit 110 supplies power to an electric vehicle to be charged through the DC output unit 170 and 120 .

In addition, the current transferred through the AC/DC converter 110 may be transferred to the DC/DC converter 210 and stored in the battery unit 230 of the energy storage device 200 .

At this time, the charging of the battery unit 230 is performed during a time when the electric vehicle is not being charged, and when the electric vehicle is charged, the current converted by the AC/DC converter is transferred to the DC output unit 170 . (120) so that all are transmitted.

According to the present invention, the charger control unit 130 first provides the power converted by the DC output units 170 and 120 within the voltage and current range required by the electric vehicle to be charged, and the above voltage and current is controlled to be provided through the energy storage device 200, and the electric vehicle charger 100 is connected to two or more of the plurality of energy storage devices 200, and calculates the charging capacity of the electric vehicle to be charged, Control to selectively charge power among the energy storage devices 200, but preferentially use the ones with a charge amount of 80% or more among the energy storage devices 200, and stop using them when the charge amount falls below 20%.

The charging capacity required for each electric vehicle is different. To compensate for this, the electric vehicle charger 100 and the energy storage device 200 are used together. First, the electric vehicle charger 100 is used, and the electric power stored in the energy storage device 200 is used for insufficient capacity.

Basically, a plurality of the electric vehicle charger 100 is present, and the energy storage device 200 is configured to exist in plurality. The electric vehicle charger 100 is configured to be connected to the energy storage device 200 in plurality. That is, a plurality of electric vehicle chargers 100 and a plurality of energy storage devices 200 are connected to each other in a many-to-many correspondence.

Thereafter, in the energy storage device 200, those with a charge amount of 80% or more are preferentially used, and those with a charge amount of 20% or less are stopped. This is to improve the lifespan of the energy storage device 200 because it is most efficient to maintain the charging amount at 20% or more and 80% or less.

According to an embodiment of the present invention, the electric vehicle charger 100 includes: a photographing unit 140 for photographing a vehicle entering a charging area; a power amount detection unit 150 for detecting the amount of power supplied to the vehicle entering the charging area through the power meter installed in the electric vehicle charger 100;

Determination of a charging interference vehicle that determines whether a vehicle entering the charging area is a charging obstruction vehicle using the photographing information captured by the photographing unit 140 and the electric energy change information detected by the electric energy sensing unit 150 part 165; and an output unit 170 configured to output notification information for a request to take out to the charging area when the vehicle is determined to be a charging obstruction vehicle through the charging interference vehicle determination unit 165 .

The photographing unit 140 is installed in each of the plurality of electric vehicle chargers 100 in the parking lot to photograph the vehicles 20 entering the charging area A.

Such a photographing unit 140 may be made of a CCTV camera, and may record images for the charging area (A) and count the usage time accordingly, as well as control the license plate information, image information, etc. of the vehicle 20 to be picked up ( 400) is provided.

The watt-hour detection unit 150 detects the watt-hour supplied to the vehicle 20 that has entered the charging area A through the watt-hour meter installed in the electric vehicle charger 100 .

That is, the power amount detection unit 150 detects the amount of power changed from the power meter, and determines whether the vehicle 20 located in the charging area A is in a charged state as the change in the amount of power is detected.

On the other hand, in the case of the control unit 160, the vehicle 20 entering the charging area (A) by using the photographing information photographed through the photographing unit 140 and the electric energy change information detected through the electric energy sensing unit 150 . Determining whether or not the vehicle is obstructing charging.

To this end, as shown in FIG. 3 , the control unit 160 may include a photographing information receiving unit 310 , an electric energy change information receiving unit 320 , and a charging interference vehicle determining unit 165 .

Here, the photographing information receiving unit 310 receives the photographing information photographed by the photographing unit 140 and stores the photographing information in the database unit DB.

In addition, the power amount change information receiving unit 320 receives the power amount change information from the power amount detection unit 150 and stores it in the database unit DB.

In addition, the charging obstruction vehicle determination unit 165 fetches necessary information from the database DB to determine whether the vehicle is a charging obstruction vehicle in the first and second phases.

In other words, the charging interference vehicle determination unit 165 is based on the photographing information acquired through the photographing unit 140, as shown in FIG. 2, the license plate 22 of the vehicle 20 entering the charging area A ) to determine whether the vehicle is a charging obstruction by checking the color.

In general, the license plate of a vehicle has different colors depending on the use and is mounted on the front and rear of the vehicle. Green), commercial vehicles are yellow.

Accordingly, the charging obstruction vehicle determination unit 165 determines that the color of the license plate 22 included in the shooting information stored in the database unit DB is not blue, and determines that it is not an electric vehicle, First, it may be determined as a charging-interference vehicle that cannot use the electric vehicle charger 100 .

This is because, if the vehicle 20, which is not an electric vehicle, enters the charging area A, the electric vehicle to be actually charged may be inconvenienced due to the lack of the charging area A. By determining that the vehicle is a vehicle that interferes with charging, the vehicle can be pulled out of the charging area (A), thereby minimizing inconvenience to the electric vehicle user.

In addition, when there is no change in the amount of electricity for the first 5 minutes after entering the charging area (A) for a preset standby time, for example, the vehicle ( 20), it may be determined that the vehicle is not in a charging state, and thus the vehicle may be finally determined as a secondary charging obstruction vehicle.

That is, if there is no change in the amount of power during the preset standby time after entering the charging area (A), it is determined that there is no will to charge, and since the charging area (A) has no choice but to be used for parking, such a vehicle as a charging obstruction vehicle By allowing the vehicle to be taken out of the judgment and charging area A, it is possible to minimize the inconvenience of the electric vehicle user for actual charging.

At the same time, if the charging interference vehicle determination unit 165 is not the color of the license plate 22 is blue, it is primarily determined as a charging disturbance vehicle, and if there is no change in the amount of power during the standby time set for such a vehicle, finally the charging disturbance vehicle can be judged as

And, if the color of the license plate 22 is not blue, the charging interference vehicle determination unit 165 determines that the vehicle is a charging interference vehicle, but when a change in the amount of power is detected during the standby time, the state is the charging state, so as an example the license plate ( 22) It is determined that an error has occurred in color recognition or that the vehicle has not replaced the license plate 22, so that it can be finally determined as an electric vehicle rather than a vehicle that interferes with charging.

In addition, the charge-disrupted vehicle determination unit 165 determines that the color of the license plate 22 is blue, and determines that the vehicle is an electric vehicle, but if there is no change in the amount of electric power during the standby time, it can be determined as a vehicle with the second-lane charging interference.

This is because even if it is determined as an electric vehicle, if charging is not performed in the charging area A, other electric vehicles may interfere with charging. , to effectively secure the charging area A for charging.

On the other hand, the output unit 170 outputs notification information for a request for taking out of the vehicle 20 that has entered the charging area (A) as it is determined through the control unit 160 as a charging obstruction vehicle.

In the case of the notification information output from the output unit 170, the contents may be transmitted through a separate monitor or may be transmitted to the corresponding vehicle in a visual method such as repeatedly blinking a lamp, and also include notification information. It may be transmitted to the corresponding vehicle 20 through an audible method such as providing a voice or outputting a warning sound.

In addition, the output unit 170 outputs not only the notification information as described above, but also if the vehicle is not taken out even when the notification information is provided, a bill including a separate penalty in the charge for using the charging area (A) is sent to the vehicle 20 ) may be issued when exiting the vehicle.

Here, if the control unit 160 is determined to be a charging obstruction vehicle as described above, or if the vehicle 20 for which a penalty bill is issued is already registered in the database unit DB, the information is transmitted to the user terminal of the vehicle 20 . may be transmitted.

In addition, as shown in FIG. 4 , the charging interference vehicle system according to the present embodiment may further include a settlement unit 180 .

As a result of determination through the control unit 160, when it is determined that the vehicle is an electric vehicle, the settlement unit 180 calculates a charging time according to the requested amount of charge of the vehicle 20, and determines that the vehicle is not taken out of the vehicle in a state exceeding the charging time Then, the parking fee is added to the charging fee at the time of final exit to settle the charging and parking fee.

The settlement unit 180 allows the electric vehicle to be pulled out to settle the charging and parking fees, and if it is determined through the control unit 160 as a result of the determination through the control unit 160 that the vehicle is a charging obstruction, the final parking fee is charged as described above. , it may be settled by adding the penalty included in the generated bill.

Accordingly, in this embodiment, it is possible to determine a vehicle that interferes with charging through the unmanned system, and for a vehicle determined to be a vehicle that interferes with charging, a separate penalty must be added to the parking fee to be charged so that the vehicle can be pulled out. There is no need to incur additional equipment and manpower costs for cracking down, and it can also solve the problem of quarrels between vehicle drivers and enforcement officers in the process of imposing fines.

As a result, in this embodiment, by installing the photographing unit 140 in the charging area (A) to determine the color of the license plate of the vehicle 20 entering, the change in the amount of power of the vehicle 20 from the watt-hour meter of the electric vehicle charger 100 By detecting, if the color of the license plate of the electric vehicle is not blue or a change in the amount of power is not detected, it is determined that the vehicle is a charging obstruction, and measures such as outputting notification information and issuing a bill are made to the vehicle 20. By effectively controlling the obstructing vehicle, the user can achieve quick and convenient charging.

Hereinafter, FIG. 4 is a flowchart showing a method of operating a charging system according to an embodiment of the present invention, FIG. 5 is a diagram sequentially showing a method for detecting a charging obstruction vehicle according to an embodiment of the present invention, and FIG. 6 is another embodiment of the present invention It is a drawing showing a settlement step according to an example, C.

Referring to FIG. 4 , a measuring step of measuring the voltage and power required by the vehicle; an additional current calculation step of calculating an additional current by comparing the voltage and power required by the vehicle with the voltage and power of an electric vehicle charger; It may include a selection step of selecting a suitable energy storage device from among the plurality of energy storage devices.

As shown in FIG. 5 , a method for detecting a charging obstruction vehicle according to the present embodiment will be sequentially described as follows.

First, when a photographed image of the vehicle 20 entering the charging area A through the photographing unit 140 is stored in the database unit DB, the charging interference vehicle determination unit 165 receives the corresponding photographing information. (S100).

The charging interference vehicle determination unit 165 determines the color of the license plate 22 for the vehicle 20 that has entered the charging area A, and primarily charges the vehicle 20 through whether the color is blue. It is determined whether it is an interfering vehicle (S200).

If the color of the license plate 22 of the vehicle 20 is determined, if the color is blue, the charging interference vehicle determination unit 165 determines that the vehicle is an electric vehicle (S210).

At this time, the charging disturbance vehicle determination unit 165 receives the electric energy change information from the database DB in which the detection information of the electric energy detection unit 150 is stored (S220), and if the electric energy change is detected (S300), finally Let it be judged as an electric vehicle.

In addition, if it is determined that the vehicle is an electric vehicle (S210), but no change in the amount of electric power is detected for the vehicle (S330), it can be inferred that the vehicle is parked in the charging area (A) only, so charging is interrupted for the vehicle 20 When it is determined as a vehicle (S500), the notification information is outputted using the output unit 170 for taking out the vehicle 20 (S600).

On the other hand, if the result of receiving the shooting information about the vehicle 20 entered through the charging interference vehicle determination unit 165 (S100), the color of the license plate 22 is not blue, it is primarily determined as a charging interference vehicle, For the secondary determination, the power amount change information is received from the power amount detection unit 150 (S300).

Here, if the vehicle is primarily determined to be a charging interference vehicle according to the color of the license plate 22, but when a change in the amount of power is detected (S400), the vehicle 20 is in a charging state in the charging area (A), so finally an electric vehicle to be judged as

This is because, for example, an error has occurred in the recognition of the color of the license plate 22, or it can be determined that the vehicle has not replaced the license plate 22, and finally, the vehicle that interferes with charging is determined through the primary and secondary judgments. This is to ensure the reliability of judging a vehicle that interferes with charging by judging it as an electric vehicle rather than an electric vehicle.

On the other hand, if it is determined that the vehicle is primarily a charging obstruction vehicle (S200), and it is determined that a change in the amount of power is not detected in the second lane (S400), the vehicle 20 is finally determined as a charging obstruction vehicle (S500), and together with In order to take out the vehicle 20 in the charging area A, the notification information is output by using the output unit 170 (S600).

In the case of the notification information output from the output unit 170, the contents may be transmitted through a separate monitor or may be transmitted to the corresponding vehicle 20 in a visual method such as repeatedly blinking a lamp, and also by voice It may be transmitted to the corresponding vehicle 20 through an audible method such as providing or outputting a warning sound.

In addition, the output unit 170 may cause not only the notification information as described above, but also if the vehicle is not taken out even when such notification information is provided, a bill including a separate penalty in the charge for using the charging area (A) may be issued. have.

Meanwhile, as shown in FIG. 6 , the method for detecting a charging obstruction vehicle according to the present embodiment may further include a settlement step.

In other words, if the vehicle is finally determined to be an electric vehicle through the above-described determination of the charging interference vehicle (S710), a charging time according to the requested amount of charge requested from the corresponding vehicle is calculated using the electric energy sensing unit 150 (S720).

At this time, as a result of checking through the photographing unit 140, if the charging time calculated according to the requested charging amount is exceeded in a state in which the vehicle is not taken out of the charging area A (S730), the control unit 160 ) to guide the vehicle according to the completion of charging (S740).

As described above, in the case of guidance according to the completion of charging, it may be provided in the form of a message or the like to the terminal of the user of the vehicle stored and registered in the database unit DB while using the charging area A.

After that, the user terminal of the vehicle exceeds the charging time, but requests whether to continue parking after charging (S750), and if parking is performed (S760), performing guidance according to the completion of charging Returning to ( S740 ), it is possible to check whether or not to park again after a preset time, that is, whether to extend the parking time.

If, after charging is completed, parking is not performed or there is no response according to whether parking is performed (S760), a warning message is transmitted to the user terminal of the corresponding vehicle and a parking request is requested again (S770).

Here, if the parking is performed according to the re-request (S780), return to the step (S740) of performing the guidance according to the charging completion so that it is possible to check whether parking is continued after a set time, and repeatedly request whether to park When parking is not performed after a predetermined time has elapsed (S780), that is, when exiting the vehicle, the parking fees resulting from using the charging and charging area A are summed to make the vehicle exit at the same time as settlement (S790). ).

The present invention installs a camera in a charging area provided in an electric vehicle charging station to determine the color of the license plate of an entering vehicle, detects a change in the amount of electric power of the vehicle from the watt-hour meter of the charger, and if it is not the color of the license plate of the electric vehicle, or a change in the amount of electric power is not detected, it is judged as a charging obstruction vehicle, and measures such as a warning broadcast and issuance of a notice are made for the vehicle, thereby controlling the charging obstruction vehicle and allowing the user to facilitate quick and convenient charging. have

Accordingly, the present invention has the effect of solving conventional problems such as the occurrence of separate equipment and manpower costs for cracking down on charging-obstructed vehicles, as well as the occurrence of quarrels between the vehicle driver and the enforcement personnel in the process of imposing a penalty. .

<Explanation of symbols for main parts of the drawing>
100: electric vehicle charger 200: energy storage device
300: charge management unit

Claims (10)

a plurality of electric vehicle chargers that receive electric power from the outside and supply electric power for charging electric vehicles by converting the introduced electric power;
a plurality of energy storage devices receiving a portion of the electric power flowing into the electric vehicle charger and storing the electric power;
and a charging management unit for controlling the energy storage device and the electric vehicle charger,
The electric vehicle charger,
a photographing unit for photographing a vehicle entering the charging area;
an watt-hour detection unit configured to detect an amount of watt-hour supplied to a vehicle entering the charging area through a watt-hour meter installed in the electric vehicle charger;
a disturbance determination unit for determining whether a vehicle entering the charging area is a charging obstruction vehicle using the photographing information photographed through the photographing unit and the electric energy change information detected through the electric energy sensing unit; and
and an output unit configured to output notification information for a request to take out to the charging area when the vehicle is determined to be a charging obstruction through the disturbance determination unit; and
The interference determination unit,
a photographing information receiver configured to receive the photographing information;
Including a power amount change information receiving unit for receiving the power amount change information,
It is characterized in that it is primarily determined whether or not a vehicle is impeding charging through the color of the license plate of the vehicle included in the shooting information, and secondarily whether or not a vehicle is impeding charging according to the charging state using information on changes in the amount of electricity during a preset standby time. An electric vehicle charging system using an energy storage device.
The method of claim 1,
The electric vehicle charger,
an AC/DC converter that receives external power and converts alternating current into direct current;
a DC output unit for converting the DC current delivered from the AC/DC converting unit to match the voltage of the electric vehicle and outputting it;
and a charger control unit for determining and controlling the state of the charger,
The energy storage device.
a DC/DC converter converting the voltage of the current delivered from the AC/DC converter into a voltage suitable for charging the energy storage device;
BMS for managing the energy storage device;
characterized in that it comprises a battery unit for storing the current
Electric vehicle charging system using energy storage device.
3. The method of claim 2,
The charger control unit,
The power converted from the DC output unit is first provided within the voltage and current range required by the electric vehicle to be charged, and the voltage and current above the voltage and current are controlled to be provided through the energy storage device,
The electric vehicle charger is connected to two or more of the plurality of energy storage devices, calculates the charging capacity of the electric vehicle to be charged, and controls to selectively charge power among the energy storage devices,
Among the energy storage devices, those with a charge of 80% or more are preferentially used, and when the amount of charge falls below 20%, use is stopped.
Electric vehicle charging system using energy storage device.
delete delete The method of claim 1,
The interference determination unit,
Electric vehicle charging system using an energy storage device, characterized in that, if the color of the license plate is not blue, the vehicle is primarily determined to be a charging obstruction vehicle, and if there is no change in the amount of power during the standby time, the vehicle is determined to be a secondary charging obstruction vehicle.
The method of claim 1,
The interference determination unit,
If the color of the license plate is not blue, it is determined that the vehicle is primarily a charging obstruction vehicle.
The method of claim 1,
The interference determination unit,
Even though the color of the license plate is blue, if there is no detection of a change in the amount of electric power during the standby time, the electric vehicle charging system using an energy storage device, characterized in that it is determined as a charging obstruction vehicle.
Measuring step of measuring the voltage and power required by the vehicle;
an additional current calculation step of calculating an additional current by comparing the voltage and power required by the vehicle with the voltage and power of an electric vehicle charger;
a selection step of selecting a suitable energy storage device from among a plurality of energy storage devices;
A photographing step of photographing a vehicle entering the charging area through the photographing unit;
a power amount sensing step of detecting an amount of power supplied to a vehicle entering the charging area through a power meter installed in the electric vehicle charger;
a charging interference vehicle determination step of determining whether a vehicle entering the charging area is a charging obstruction vehicle using the photographing information photographed by the photographing unit and the electric energy change information detected by the watt-hour meter; and
An output step of outputting notification information for a request to take out to the charging area when it is determined that the vehicle is a charging obstruction vehicle through the charging obstruction vehicle determination step;
The electric vehicle charger,
a photographing unit for photographing a vehicle entering the charging area;
an watt-hour detection unit configured to detect an amount of watt-hour supplied to a vehicle entering the charging area through a watt-hour meter installed in the electric vehicle charger;
a disturbance determination unit for determining whether a vehicle entering the charging area is a charging obstruction vehicle using the photographing information photographed through the photographing unit and the electric energy change information detected through the electric energy sensing unit; and
and an output unit configured to output notification information for a request to take out to the charging area when the vehicle is determined to be a charging obstruction through the disturbance determination unit; and
The interference determination unit,
a photographing information receiver configured to receive the photographing information;
Including a power amount change information receiving unit for receiving the power amount change information,
It is characterized in that the first determination of whether or not the vehicle is charging impeding through the color of the license plate of the vehicle included in the shooting information is used, and the second determination of whether or not the vehicle is interfering with charging according to the charging state using the information on the change in the amount of power during the preset standby time, characterized in that An electric vehicle charging system using an energy storage device. delete

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