KR101440984B1 - Electric energy saving system, electric energy saving method, electric power providing system, billing system and method for recharging electric car - Google Patents

Abstract

And an energy storage device connected to the cabling and capable of receiving and storing electric energy from the cabling, wherein a time interval between the electric vehicles is less than a predetermined time A power energy storage system is disclosed in which power energy supplied from the cabling is prevented from flowing into the energy storage device.

Description

TECHNICAL FIELD [0001] The present invention relates to an electric energy saving system, an electric energy saving method, an electric power providing system for charging an electric car, and a charging method and system for electric power for electric vehicle charging car}

The present invention relates to a power energy storage system, a method for storing power energy, a technique for supplying power for charging an electric car, and a technique for charging for supplied power. And more particularly to a technique using a wire that supplies electric power to a train.

Typical three-phase four-wire power lines can be connected to the various loads used by consumers. Suppliers of three-phase, four-wire power can not be forced to control demand, but they can indirectly control power demand in a manner that regulates seasonal and / or midnight supply costs. Generally, late night power is relatively inexpensive compared to daytime power, because power consumption is low at midnight. A system that stores energy in the middle of the night by connecting an energy storage device to a 3-phase 4-wire power line and uses the stored power energy in the daytime to heat it is widely used. have.

The three-phase four-wire power line can be used for both domestic and commercial use, and a three-phase four-wire power line can be connected to an electric car charging station for charging the battery of an electric vehicle having recently started to be supplied. The electric power supplied to the electric vehicle from the electric vehicle charging station may be electric power obtained directly from a three-phase four-wire commercial power line, or alternatively, alternating-current electric power reduced from the three-phase four-wire electric power line, or direct current electric power generated by rectifying the alternating electric power. While the infrastructure of gas stations for cars using fossil fuels such as gasoline or diesel is sufficient, the infrastructure for charging the batteries of electric vehicles is relatively insufficient. In order to commercialize electric cars, electric car charging stations need to be installed in various places.

On the other hand, in a railroad field where vehicles are operated using electric power such as an urban railway, a load connected to a railway line connected to an electric railway and providing the electric power of the electric railway is substantially limited to an electric railway car and its subsidiary facilities. Therefore, it is possible for the operator who supplies the running power to control the electric power demand of the electric device connected to the branch line. In other words, it is possible to control how much electric power demand will occur at any time of the day, for example, since it is possible to set the running watertightness between the electric vehicles in advance.

As described above, the power energy can be supplied from the three-phase four-wire commercial power line and stored in the energy storage device. Power energy can be stored in the energy storage device at any time because of the sufficient supply of power energy from the three-phase four-wire commercial power line.

On the other hand, since the amount of power that can be supplied by the above-mentioned cabling has a limit, if the amount of the load connected to the cabling increases, the voltage of the cabling can be lowered. Therefore, the energy storage connected to the cable can be charged at any time, so that the voltage of the cable can drop below the minimum allowable value, which can interfere with the operation of the electric car connected to the cable and its associated facilities. However, since the operator of the wire can substantially control the electric power demand of the electric devices connected to the electric wire as described above, in the present invention, the electric power supplied from the electric wire connected to the electric car is charged into the energy storage device, So as not to affect the devices.

In addition, the present invention proposes an electric vehicle charging / charging system capable of charging an electric vehicle using renewable energy of a train.

The scope of the present invention is not limited by the above-described problems.

The power energy storage system according to one aspect of the present invention includes a power supply line for supplying electric power to the electric motor and an energy storage device connected to the upper line and capable of receiving and storing electric energy from the upper line . At this time, when the time interval between the electric vehicles is smaller than the predetermined discharge, the electric energy supplied from the above cusp is prevented from flowing into the energy storage device.

According to another aspect of the present invention, there is provided a power energy storage method including: a cascade that supplies electric power to a train; and an energy storage device that is connected to the cascade above and includes an energy storage device capable of receiving and storing electric energy from the cascade. In a system, it is a way to store power energy in the above energy storage device. The method comprises the steps of: checking whether the running traffic between the electric trains is less than a predetermined discharge; and if the running traffic between the above electric trains is less than the predetermined water discharge above, the electric energy from the above- As shown in FIG.

According to another aspect of the present invention, there is provided an electric power billing system for charging an electric vehicle, comprising: a wire for supplying electric power to the electric vehicle; an energy storage device connected to the above wire and capable of receiving and storing electric energy from the above wire; And a billing server coupled to the energy storage device above. At this time, when the running traffic between the electric vehicles is less than the predetermined discharge, the power energy supplied from the above cords is prevented from flowing into the above energy storage device, and the above energy storage device stores the power stored in the above energy storage device At least a portion of which is intended to be supplied to an electric car charging station, wherein the charging server is adapted to perform charging for at least a portion of the power supplied from the energy storage device above.

According to another aspect of the present invention, there is provided a charging method for electric power for charging an electric vehicle, comprising the steps of: providing an electric energy storage device connected to a crossover for supplying electric power to the electric vehicle and a crossover thereon, The power supply for charging the electric vehicle using the energy storage system included therein, and then charging the supplied electric power. The method includes the steps of storing power energy from the upper line in the upper energy storage device, supplying at least a portion of the stored power energy to an electric vehicle charging station, and supplying at least a portion of the regenerated power And generating billing information required to perform billing related to the billing server and transmitting the billing information to the billing server. In this case, the storing step may include a step of checking whether the running traffic between the electric vehicles is less than a predetermined electric power, and when the running water traffic between the electric vehicles is less than the predetermined electric energy, And blocking transmission to the energy storage device above.

In an embodiment of the present invention, the regenerative electric power of a train is used to provide electric power to an electric vehicle charging station. Although a power distribution system with a wire that delivers electric power for accelerating a train has been understood only as a system for end-consuming electric power, in an aspect of the present invention, as a system for supplying electric power to the outside of the electric power distribution system ≪ / RTI > That is, it utilizes the electric power that flows through the wire as a power supply system for supplying electric devices outside the system, for example, an electric car.

On the other hand, a regenerative braking system can be used to save energy when decelerating the electric vehicle. Regenerative braking does not braking the kinetic energy of a train when it is decelerating to heat / sound energy through mechanical friction, but instead using a motor to accelerate a train to use as a generator, It is a technology to reduce the kinetic energy of a train by converting energy into electric energy form. The thermal energy generated during mechanical braking is difficult to recycle, but the electric energy generated during regenerative braking is advantageous in that it can be recycled. In the present specification, the electric energy generated by converting the kinetic energy of the electric vehicle can be referred to as a regenerative electric power.

The electric vehicle can be accelerated by receiving electric power from the electric wire. Regenerative electric power of the electric vehicle can be stored in the electric energy storage device installed in the electric vehicle, but it can be returned to the electric wire. At this time, the regenerative power returning to the guard line may be used as energy for acceleration of another electric train supplied with power from this guard line. When the regenerative electric power of the electric motor is returned to the power line, the voltage of the electric wire can be fluctuated to an undesired level by the regenerative electric power, so that the power supply system of the electric motor can be made unstable and the electric power supplied to other devices It can cause malfunctions.

In an embodiment of the present invention, electric power can be supplied to an electric car charging station by using a technique of storing regenerative electric power of the electric motor in an electric energy storage device connected to a power line instead of providing it to another electric train or converting it into thermal energy.

A charging method according to one aspect of the present invention for solving the above-mentioned problems is provided. This method supplies electric power for charging the electric vehicle using a regenerative electric power storage system including an electric motor vehicle, a power supply line for the above electric motor, and an energy storage device connected to the above-mentioned electric line, . The method further includes the steps of storing the regenerative electric power of the electric motor in an energy storage device through a wire electrically connected to the electric motor, supplying at least a part of the stored regenerative electric power to the electric car charging station, And performing charging on at least a part of the regenerative electric power.

A billing system according to another aspect of the present invention is provided. The system includes an energy storage device connected to a power supply line for supplying power to the electric motor vehicle and configured to store the regenerative electric power of the electric motor vehicle through the above guard line, and a charging server connected to the energy storage device. The above energy storage device is adapted to supply at least a part of the electric power stored in the above energy storage device to the electric car charging station. And the above charging server is configured to perform charging on at least a portion of the power supplied from the above energy storage device.

A billing system according to another aspect of the present invention is provided. This system is a billing system for electric power for charging electric vehicles, which generates billing information to be provided to a billing server for billing electric power for charging electric vehicles. The system includes an energy storage device connected to a power supply line for supplying electric power to the electric vehicle, an energy storage device for storing the regenerative electric power of the electric vehicle through the above guiding line, and a billing information calculation device connected to the above energy storage device . At this time, the above energy storage device is adapted to transmit at least a part of electric power stored in the above energy storage device to the electric car charging station. The above-mentioned charging information calculation device collects information necessary for charging related to at least a part of the power transmitted from the above energy storage device, and generates charging information that can be transmitted to the above charging server.

A power supply system according to another aspect of the present invention is provided. The system includes an energy storage device connected to an electric car charging station adapted to store electric power to the electric vehicle and to store the regenerative electric power of the electric vehicle through the above canted line, . At this time, the above energy storage device is adapted to supply at least a part of the regenerative power stored in the above energy storage device to the above-mentioned electric car charging station at the request of the above electric car charging station.

A charging method according to another aspect of the present invention is provided. This charging method supplies electric power for charging an electric vehicle using a regenerative electric power storage system including an electric motor vehicle, a power supply line for supplying electric power to the electric motor, and an energy storage device connected to the electric line above, And the like. The method includes the steps of storing the regenerative electric power of the electric motor in an energy storage device through a wire electrically connected to the electric motor, supplying at least a part of the stored regenerative electric power to the electric car charging station, And generating billing information necessary for performing billing related to a part of the regenerative power and delivering the billing information to the billing server.

According to the present invention, it is possible to provide a technique of charging an energy storage device with power supplied from a sub line connected to a train, but not affecting other power devices connected to the sub line.

According to the present invention, it is possible to provide a charging system and a charging system that can charge an electric vehicle using renewable energy of a train.

The scope of the present invention is not limited by the above-mentioned effects.

1 illustrates a configuration of a power energy storage system according to an embodiment of the present invention.
4 shows a power supply system of an electric vehicle charging system according to an embodiment of the present invention.
FIG. 5A shows a part of the electric power supply system of the electric car charging system according to FIG. 4, and FIGS. 5B and 5C show an example modified from FIG. 5A.
6A and 6B are flowcharts illustrating a charging method of electric power for charging 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, which will be readily apparent to those skilled in the art to which the present invention pertains. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. In addition, the singular forms used below include plural forms unless the phrases expressly have the opposite meaning. The drawings attached hereto are exaggerated or partially exaggerated for ease of explanation, and the scale of each part of the elements shown in the drawings may vary when actual embodiments of the present invention are practiced.

1 illustrates a configuration of a power energy storage system according to an embodiment of the present invention.

The power energy storage system of FIG. 1 includes a cabling 20 for supplying electric power to the electric vehicle 90, an energy storage device 20 connected to the cabling 20 and capable of receiving and storing electric energy from the cabling 20 10). For example, the electric railroad car 90 may be an urban railroad car such as the subway line 2 of Seoul, but is not limited thereto. The electric power transmitted through the wire 20 is primarily for the operation of the electric motor vehicle 90 and the energy storage device 10 is for storing the idle electric power of the wire 20. 1 may further include a three-phase four-wire power supply 61, a transformer 62, a rectifier 63, and a breaker 64. The three- The voltage of the three-phase four-wire type power supply 61 is rectified to a DC voltage through the transformer 62 and the rectifier 63 and can be supplied to the electric motor vehicle 90 through the wire 20. A single-phase high-voltage power source may be provided instead of the three-phase four-wire power source described above.

In an embodiment of the present invention, the energy storage device 10 can know information about the time interval between the electric vehicles 90. [ Operation traffic time means the scheduled running time of the train 90. In the present specification, 'peak septation' means the vehicle deployment time when the driving is most frequently performed during the day, and 'non peak septation' means the vehicle disposition time when the peak septic value is smaller. The peak seizure is shorter than the non peak seizure. In the case of urban railways, 'peak seizure' occurs mainly during commute time. Table 1 shows examples of peak and non-peak seizures of seven Seoul subway lines. For example, Seoul Subway Line 2 consists of 43 stations (except for the branch line). According to Table 1, a total of 32 vehicles can be arranged at a peak interval of 150 seconds. The specific values shown in Table 1 may be changed in accordance with the operation plan of the city rail operator.

Line Number of Substation Peak septation (Sec) (number of vehicles) Non-peak septation (sec) (Number of vehicles)


Seoul


Line 2 13 150 (32) 330 (15) Line 3 8 150 (16) 330 (7) Line 4 9 180 (17) 360 (9) Line 5 15 180 (25) 360 (13) Line 6 12 180 (21) 360 (11) Line 7 16 180 (24) 360 (12) Line 8 5 240 (8) 480 (4)

The electric power supplied to the electric railway car 90 from the wire 20 may not be produced by self generation but may be supplied from a three-phase four-wire electric power line. For this purpose, a substation (that is, a transformer) that couples a three-phase four-wire power line and a trunk line 20 can be installed near the trunk line 20. In the case of a Seoul subway line 2, 13 substations are provided , Which is a number that can be further expanded or decreased.

Fig. 2 shows an example of frequency of operation of an urban railroad during 24 hours a day. The x-axis represents time, and the y-axis represents the frequency of running of the electric car. The frequency of operation is usually the highest in commuting time. The traffic volume of the train 90 has a relationship inversely proportional to the frequency of operation described above. Therefore, the fact that the traffic volume between the electric vehicles 90 is smaller than the predetermined electric power indicates that the frequency of operation of the electric vehicle 90 is larger than the predetermined frequency of operation (for example, reference numeral 311).

FIG. 3 (a) shows a voltage variation at a specific point of a crossover line 20 in a peak interval, and FIG. 3 (b) shows a voltage variation at a specific point of a crossover line 20 at a non- And the simulation results are shown in FIG.

It is preferable to keep the voltage of the lead wire 20 constant to reduce the failure of the electric devices connected to the lead wire 20 but the load at each point of the lead wire 20 varies with time, The voltage can change over time. 3 (a), the voltage of the line 20 varies from a minimum of about 1400 V to a maximum of about 1800 V for 180 seconds. In FIG. 3 (b), the voltage of the line 20 varies from a minimum of about 1500 V to a maximum of about 1750 V for 360 seconds. Thus, in general, the fluctuation range of the voltage of the crossover 20 is larger in the peak seizure period than in the non-peak seizure period. 3 (a) and 3 (b) illustrate an example in which the running times of the transit vehicles are 180 seconds and 360 seconds, respectively, but this value may vary according to the operation plan of each city railroad.

When the energy storage device 10 is connected to the lead wire 20 at a time when the voltage of the lead wire 20 falls below a predetermined threshold value 322 shown in FIG. The instantaneous voltage can be lower than the lowest voltage shown in Fig. 3 (a). In this case, sufficient electric power may not be supplied to the electric motor vehicle 90. Therefore, in an embodiment of the present invention, it is possible to stop charging the energy storage device 10 with the power energy in a time period during which the voltage of the guard wire 20 falls below a predetermined threshold value. For example, in the portion A of FIG. 2 in which the frequency of operation is high, that is, the portion A where the time when the voltage of the guard wire 20 falls below a predetermined threshold value 322 exists, Power energy can be prevented from flowing into the energy storage device 10.

In this way, when the operation time is less than the predetermined time, a large number of electric vehicles are operated. Therefore, the charging of the energy storage device 10 is stopped so as to stably supply the electric power to be supplied to the electric vehicle and the auxiliary facilities . At this time, it is possible to shut off the inflow of the electric energy by a conventional switch device.

Referring again to FIG. 1, the power energy storage system may further include a control device 100 that includes information about the running traffic between the electric vehicles 90. For example, the control device 100 may be a server including operation information of an urban railway. The energy storage device 10 may be configured to receive information regarding the traffic volume between the control devices 100 and the electric vehicles 90 through wired or wireless communication means. The wired / wireless communication means may be installed in the energy storage device 10 and the control device 100, respectively. Also, although not shown, the control device 100 can communicate with the electric vehicle 90 to adjust the operation schedule of the control device 100. [

On the other hand, in the modified embodiment of the present invention, even if the running traffic between the electric vehicles 90 is less than a predetermined discharge time (for example, the section A of FIG. 2), the voltage of the electric wire 20 reaches a predetermined voltage 3 (a) 322), it is possible to allow the power energy supplied from the guard wire 20 to flow into the energy storage device 10. This is because the voltage of the wire 20 does not drop below the minimum allowable value even when the voltage of the wire 20 is higher than the predetermined voltage even when the electric motor vehicle 90 is frequently operated and the energy storage device 10 is charged. It does not interfere with the operation.

A power energy storing method according to another embodiment of the present invention will be described with reference to FIGS. 1 to 3. FIG. The method includes an energy storage device (10) connected to a cabling (20) and a cabling (20) for supplying electric power to a train (90) and capable of receiving and storing power energy from a cabling In an energy storage system, it is a method of storing power energy in an energy storage device (10).

The method may include a step (S101) of checking whether the running traffic between the electric vehicles 90 is less than a predetermined air / fuel ratio. This step S101 may be performed by the energy storage device 10 or by a control module controlling the switch device connected to the energy storage device 10. [ To this end, a control device combining an FPGA, an ASIC, or commercial control logic chips may be provided.

Next, when the running traffic between the electric vehicles 90 is less than the predetermined electric power, step S102 of blocking power energy from the electric wire 20 from being transmitted to the energy storage device 10 may be included. Here, the predetermined sounding may be a value corresponding to the frequency of running of the train, for example, which is predefined by reference numeral 311 in Fig.

At this time, the checking step S101 (S101) is a step (S1011) in which the energy storage device 10 receives information about the running traffic between the electric vehicles 90 from the above control device through wired or wireless communication means .

The blocking step S102 includes a step S1021 of checking whether the voltage of the lead wire 20 is greater than a predetermined voltage when the operation load between the electric vehicles 90 is smaller than the predetermined value can do. At this time, when the voltage of the wire 20 is larger than the predetermined voltage, the electric energy supplied from the wire 20 may be supplied to the energy storage device 10.

In the above-described power energy storage system, at least a portion of the power energy stored in the energy storage device 10 may include regenerative power generated from a train coupled to the convolution line 20. [

4 shows a power supply system of an electric vehicle charging system according to an embodiment of the present invention.

4, the electric power supply system of the electric vehicle charging system may include a three-phase four-wire power supply 61, a transformer 62, a rectifier 63, a breaker 64, and a wire 20. The voltage of the three-phase four-wire type power supply 61 is rectified to a DC voltage through the transformer 62 and the rectifier 63 and can be supplied to the electric motor vehicle 90 through the wire 20. When the electric motor vehicle 90 accelerates, DC power can be supplied through the wire 20 and used. Conversely, when the electric motor vehicle 90 decelerates, regenerative electric power is generated through the regenerative braking system installed in the electric motor vehicle 90, and the generated regenerative electric power can be returned to the normal line 20 again. The overvoltage generated in the guard wire 20 by the regenerative power may be stored in the energy storage device 10 instead of being used for other electric vehicles.

The electric vehicle charging station 30 may be connected to the energy storage device 10. The regenerative electric power of the electric motor vehicle 90 is generated intermittently. Therefore, when the electric vehicle charging station 30 is directly connected to the electric wire 20, it may not be possible to obtain necessary regenerative electric power from the electric wire 20 at the required time. The energy storage device 10 may store the regenerative power of the intermittently generated electric motor from the wire 20 and serve as a buffer for providing a constant electric power at a time required by the electric vehicle charging station 30. [ In FIG. 4, one electric vehicle charging station 30 is connected to one energy storage device 10, but zero or zero electric vehicle charging stations may be connected to one energy storage device. In addition, a plurality of energy storage devices may be connected to one electric vehicle charging station.

In one embodiment of the present invention, the energy storage device 10 and the electric vehicle charging stations 30 and 31 may be operated by different operators. At this time, the energy storage device 10 records the amount of electric power provided to the electric vehicle charging stations 30 and 31, and charges the electric vehicle charging stations 30 and 31. A billing server 40 for billing may be connected to the energy storage device 10 via one or more wireless or wired communication networks. The charging server 40 transmits the charge corresponding to the amount of electric power provided to the electric vehicle charging stations 30 and 31 by the energy storage device 10 to the financial information of the financial institution that deals with the owner of the electric vehicle charging station 30, The processing server 70 (71).

In another embodiment of the present invention, the energy storage device 10 and the electric vehicle charging station 30, 32 may be operated by the same operator. At this time, the energy storage device 10 or the electric vehicle charging station 30 or 32 stores the amount of electric power supplied to the electric vehicles 50 and 52, The operator of the electric car). A billing server 40 for billing may be connected to the energy storage device 10 or the electric vehicle charging station 30, 32 via a wireless or wired communication network. The billing server 40 sends a charge corresponding to the amount of electric power provided by the electric vehicle charging stations 30 and 32 to the electric vehicles 50 and 52 to the electric vehicles 50 and 52, The financial information processing server 70 or 72 can be charged.

4, the electric vehicle charging station 30 can receive electric power from the energy storage device 10 as well as alternating-current power reduced by the transformer 65 from the three-phase four- Can be supplied. The reduced-pressure alternating-current power may be converted into direct-current power in the electric-vehicle charging station 30, or may be supplied to the electric-car charging station 30 after the direct-current power is converted by another apparatus not shown. The electric vehicle 50 can receive the DC power supplied from the energy storage device 10 or can receive the AC power supplied from the three-phase four-wire power supply 61 or the DC power rectified therefrom.

FIG. 5A shows a part of the electric power supply system of the electric car charging system according to FIG. 4, and FIGS. 5B and 5C show an example modified from FIG. 5A.

Referring to FIG. 5A, the energy storage device 10 can directly transfer the data necessary for charging the charging server 40 to the charging server 40. The charging liquid may vary depending on the time zone when the electric vehicle charging station 30 or 31 or the electric vehicle 50 or 52 receives electric power from the energy storage device 10 or may vary depending on the geographical position of the electric vehicle charging station 30 . That is, a relatively small amount of money may be charged when the power is supplied in the late night, and a relatively large amount may be charged in the case where power is supplied in a rare area. To perform this calculation in each energy storage device 10, additional electronic devices may need to be coupled to each energy storage device 10 to make this calculation. This may be a factor for increasing the unit price of the energy storage device 10.

In another embodiment of the present invention as shown in FIG. 5B, the energy storage device 10 may store information such as the person to be charged, the amount of power supplied and / or the supply time, and the like. Then, information such as the to-be-charged person, the supplied power amount and / or the supply time can be transmitted to the separate power supply cost calculation server 80 by a simple communication protocol. The power supply cost calculation server 70 can calculate the power supply cost for the specific charging target person and deliver it to the charging server 40. [ Then, the charging server 40 can charge the calculated power supply cost to the financial information processing server 70 of the financial institution that the charging target person trades. At this time, the billing server 40 and the power supply cost calculation server 80 may be different apparatuses.

In another embodiment of the present invention as shown in FIG. 5C, the billing information calculation device 11 collects information necessary for billing from the energy storage device 10 and processes it in a form that can be transmitted to the billing server 40 . At this time, the billing information calculation device 11 may be formed integrally with the energy storage device 10 or may be provided as a separate device. The information required for billing may include, but is not limited to, information on the person to be charged, the amount of power supplied and / or the supply time, as described above. Information necessary for billing can be transmitted to the billing server 40 through the power supply cost calculation server 80. [ At this time, the power supply cost calculation server 80 and the billing server 40 may be provided as a separate apparatus or may be implemented in the same apparatus.

The regenerative electric power is generated when the electric motor vehicle 90 decelerates, so that it can be installed in the vicinity of the electric railway station where the electric motor vehicle 90 is decelerated, but the present invention is not limited thereto.

6A and 6B are flowcharts illustrating a charging method of electric power for charging an electric vehicle according to an embodiment of the present invention.

Referring to FIG. 6A, the method includes a step S301 of storing the regenerative electric power of the electric motor in the energy storage device through a wire, a step S302 of supplying at least a part of the regenerative electric power stored in the energy storage device to the electric vehicle charging station, And performing a charging (S303) on at least a part of the supplied regenerative power. At this time, steps S301 and S302 may be performed in the energy storage device. And step S303 may be performed by the charging server.

Referring to FIG. 6B, the method includes a step S401 of storing the regenerative electric power of the electric motor in the energy storage device through a wire, a step S402 of supplying at least a part of the regenerative electric power stored in the energy storage device to the electric vehicle charging station, And generating (S403) generating billing information necessary for performing billing related to at least a part of regenerated power supplied to the billing server. At this time, steps S401 and S402 may be performed in the energy storage device. Step S403 may be performed by the billing information calculation device 11. [

Hereinafter, a billing method according to an embodiment of the present invention will be described with reference to FIG. 4 and FIG. 6A. This charging method is applied to an electric vehicle 50 using a regenerative electric power storage system including a electric motor vehicle 90, a crossover 20 for supplying electric power to the electric vehicle 90, and an energy storage device 10 connected to the crossover 20, And charging for the supplied electric power. The method includes the steps of storing the regenerated electric power of the electric motor vehicle 90 in the energy storage device 10 via the electric wire 20 electrically connected to the electric motor vehicle 90 at step S301, (S302) of supplying the regenerated power to the battery charger 30, and performing charging (S303) regarding at least a part of the supplied regenerative power.

At this time, step S303 of performing the charging may be performed by the charging server 40 connected to the energy storage device 10. The charge on at least a part of the regenerated electric power supplied from above may be a charge related to a supply cost of the regenerative electric power supplied to the electric car charging stations 30 and 31 for a predetermined time. Alternatively, the billing regarding at least a part of the supplied regenerated electric power may be a charge related to the supply cost of the regenerative electric power supplied to the specific electric vehicle 50, 52 through the electric vehicle charging station 30, 32.

A charging system for electric power for charging an electric vehicle according to another embodiment of the present invention will be described with reference to FIG. The billing system includes an energy storage device 10 connected to a cabling 20 for supplying electric power to the electric vehicle 90 and adapted to store the regenerative electric power of the electric vehicle 90 through a crossover 20, And a billing server 40 connected to the device 10. At this time, the energy storage device 10 may be adapted to supply at least a part of the electric power stored in the energy storage device 10 to the electric vehicle charging station 30. [ The billing server 40 may also be configured to perform billing for at least a portion of the power supplied from the energy storage device 10. [

A charging system for electric power for charging an electric vehicle according to another embodiment of the present invention will be described with reference to Figs. 4 and 5C. This billing system is a system for generating billing information provided to the billing server 40 that performs billing of electric power for charging an electric vehicle. The system includes an energy storage device 10 connected to a cabling 20 for supplying electric power to the electric vehicle 90 and adapted to store the regenerative electric power of the electric vehicle 90 through a crossover 20, And a billing information calculation device 11 connected to the billing device 10. At this time, the energy storage device 10 may be adapted to transmit at least a part of the electric power stored in the energy storage device 10 to the electric vehicle charging station 30. [ The billing information calculation device 11 may be configured to collect billing information related to at least some of the power transmitted from the energy storage device 10 and generate billing information that can be transferred to the billing server 40 have.

A power supply system for charging an electric vehicle according to another embodiment of the present invention will be described with reference to FIG. The system includes a wire 20 for supplying electric power to the electric motor vehicle 90, an electric motor 50 for storing the regenerative electric power of the electric motor vehicle 90 through the wire 20, And an energy storage device 10 adapted to be connected to the charging station 30. At this time, the energy storage device 10 may be adapted to supply at least a part of the regenerative power stored in the energy storage device 10 to the electric vehicle charging station 30 at the request of the electric vehicle charging station 30. The system may further include an electric vehicle charging station (30). At this time, the electric car charging station 30 is connected to the power source transformed from the energy storage device 10 and the three-phase four-wire type power source 61, and the power supplied from the energy storage device 10 or the transformed And the electric vehicle 50 may be charged using electric power supplied from a power source.

At this time, the system is configured to generate billing information necessary to perform billing related to at least a part of the regenerative power supplied to the electric vehicle charging station 30, and the billing information calculation device 11).

At this time, the billing regarding at least a part of the regenerated electric power supplied may be a charge related to a supply cost of regenerative electric power supplied to the electric vehicle charging stations (30, 31) for a predetermined time. Alternatively, the billing regarding at least a part of the supplied regenerated electric power may be a charge related to the supply cost of the regenerative electric power supplied to the specific electric vehicle 50, 52 through the electric vehicle charging station 30, 32.

In the above, the billing information may include the amount of regenerated power supplied, the time when the supplied regenerated power is supplied, and information on the consumer of the regenerated power supplied.

A method of charging electric power for charging an electric vehicle according to another embodiment of the present invention will be described with reference to Figs. 4, 5C, and 6B. This method is applied to an electric vehicle 50 using a regenerative electric power storage system including a electric motor vehicle 90, a wire 20 for supplying electric power to the electric vehicle 90, and an energy storage device 10 connected to the wire 20, And charging for the supplied electric power. The method includes the steps of storing the regenerated electric power of the electric motor vehicle 90 in the energy storage device 10 via the electric wire 20 electrically connected to the electric motor vehicle 90 at step S401, (S402) of supplying the regenerated power to the billing server 40 (S402), and transmitting the billing information to the billing server 40 (S403). At this time, such billing information may be provided by the billing information calculation device 11.

As used herein, an "energy storage device" may be, but is not limited to, a device including a rechargeable battery that charges energy, for example, in an electrochemical manner. The electrical energy supplied from the guard wire may be stored directly in the storage module of the energy storage device or may be stored in the storage module via the electromechanical energy conversion module. The energy storage device can be used as a storage device for supplying charging electric power to an electric vehicle, a storage device for storing regenerative energy, and a large-capacity energy storage device, for example, But is not limited thereto.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications, and variations will readily occur to those skilled in the art without departing from the spirit and scope of the invention.

Therefore, it should be understood that the disclosed embodiments are to be considered in an illustrative rather than a restrictive sense, and that the true scope of the invention is indicated by the appended claims rather than by the foregoing description, and all differences within the scope of equivalents thereof, .

10: Energy storage device 11: Charging information calculating device
20: wire 30, 31, 32: electric car charging station
40: charging server 50, 51, 52: electric car
61: Three phase four-wire power source 62, 65: Transformer
63: rectifier 64: breaker
70, 71, 72: financial information processing server 80: power supply cost calculation server
90: Electric train 100: Control device

Claims (18)

An energy storage device connected to a power line for supplying electric power to the electric vehicle and capable of receiving and storing electric energy from the electric power line,
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Wherein the control unit is configured to shut off the flow of power energy supplied from the power line to the energy storage device when the time interval between the electric vehicles is less than a predetermined time,
Power energy storage system. The method according to claim 1,
The power line is connected to a three-phase four-wire power source,
The three-phase four-wire power source is converted into a DC power source by a transformer,
Wherein the converted DC power supply supplies electric power to a crossover which supplies DC power to the electric vehicle,
Power energy storage system. The energy storage system according to claim 1 or 2, further comprising a control device having information on a time interval between the electric vehicles, wherein the energy storage device stores information on the running time between the electric vehicles And is adapted to receive via wired or wireless communication means. 3. The energy storage device according to claim 1 or 2, wherein, when the voltage of the power line is greater than a predetermined voltage, the power energy supplied from the power line flows into the energy storage device Wherein the power energy storage system is adapted to: 3. The power energy storage system of claim 1 or 2, wherein at least a portion of the power energy comprises a regenerative power of a train coupled to the power line. An energy storage system connected to a power line for supplying electric power to a train, and an energy storage device capable of receiving and storing electric energy from the electric power line, the electric energy storage method for storing electric energy in the energy storage device ,
Checking whether a time interval between the electric trains is less than a predetermined time; And
Blocking power energy from the power line from being transmitted to the energy storage device when the running traffic between the train is less than the predetermined time
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Power energy storage method. The method according to claim 6,
The power line is connected to a three-phase four-wire power source,
The three-phase four-wire power source is converted into a DC power source by a transformer,
Wherein the converted DC power supply supplies electric power to a crossover which supplies DC power to the electric vehicle,
Power energy storage method. 8. The method according to claim 6 or 7,
Wherein the energy storage system further comprises a control device that includes information about operating traffic between the electric vehicles,
Wherein said step of checking comprises the step of the energy storage device receiving from the control device the information about the running traffic between the electric vehicles via wired or wireless communication means.
Power energy storage method. 8. The method according to claim 6 or 7,
Wherein the step of interrupting includes checking whether the voltage of the power line is greater than a predetermined voltage when the operation insolation between the electric vehicles is smaller than the predetermined air-
Wherein when the voltage of the power line is greater than the predetermined voltage, power energy supplied from the power line is introduced into the energy storage device,
Power energy storage method. An energy storage device connected to a power line for supplying electric power to the electric vehicle and capable of receiving and storing electric energy from the electric power line; And
An accounting server coupled to the energy storage device;
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The electric energy supplied from the electric power line is prevented from flowing into the energy storage device when the time interval between the electric vehicles is smaller than a predetermined water discharge,
Wherein the energy storage device is adapted to supply at least a portion of the power stored in the energy storage device to an electric vehicle charging station,
Wherein the charging server is adapted to perform charging for the at least a portion of the power supplied from the energy storage device,
Electricity charging system for electric car charging. 11. The method of claim 10,
Further comprising a charging information calculation device connected to said energy storage device,
Wherein the billing information calculation device is configured to collect billing information related to the at least part of the power transmitted from the energy storage device and generate billing information that can be transmitted to the billing server,
Electricity charging system for electric car charging. 11. The electric vehicle charging station according to claim 10, wherein the electric vehicle charging station is connected to a power source transformed from the energy storage device and the three-phase four-wire power source, and uses power supplied from the energy storage device or power supplied from the transformed power source To charge the electric vehicle. 11. The system of claim 10, wherein the charge for at least a portion of the power is a charge for power supplied to the particular electric vehicle through the electric vehicle charging station. 12. The method of claim 11, wherein the billing information includes at least one of a power amount of the at least a portion of the power supplied, a time at which the at least part of the power is supplied, Billing system. And an energy storage system connected to a power line for supplying electric power to the electric motor and storing the electric energy supplied from the electric power line to supply electric power for charging the electric vehicle, For example,
Receiving power energy from the power line and storing the power energy in the energy storage device;
Supplying at least a portion of the stored power energy to an electric vehicle charging station; And
Generating billing information necessary for performing billing on the at least a part of the supplied power energy and delivering the billing information to the billing server
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Wherein the step of storing includes the steps of: checking whether a time interval between the electric trains is less than a predetermined electric capacity; and if the electric power of the electric power from the electric power line is lower than the predetermined energy And blocking transmission to the storage device.
Method of charging electric power for electric car charging. 16. The method of claim 15,
Wherein the energy storage system further comprises a control device that includes information about operating traffic between the electric vehicles,
Wherein said step of checking comprises the step of the energy storage device receiving from the control device the information about the running traffic between the electric vehicles via wired or wireless communication means.
Method of charging electric power for electric car charging. 1. An energy storage device connected to a power line for supplying power to a train, and capable of receiving and storing power energy from the power line,
Wherein the control unit is configured to block power energy supplied from the power line from flowing into the energy storage device when the time interval between the electric vehicles is less than a predetermined time,
Energy storage device. 1. An energy storage device connected to a power line for supplying power to a train, and capable of receiving and storing power energy from the power line,
The power storage device being adapted to allow power energy supplied from the power line to flow into the energy storage device when the time interval between the electric vehicles is greater than a predetermined capacity,
Energy storage device.

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