WO2013036019A9

WO2013036019A9 - System and method for storing electric energy, system for supplying power for charging an electric vehicle, and method and system for payment for power for charging an electric vehicle

Info

Publication number: WO2013036019A9
Application number: PCT/KR2012/007086
Authority: WO
Inventors: 김현; 정연식
Original assignee: 한국교통연구원
Priority date: 2011-09-05
Filing date: 2012-09-04
Publication date: 2013-06-20
Also published as: WO2013036019A3; WO2013036019A2; KR101194302B1; CN103782477A; JP2014533214A

Abstract

Provided is a system for storing electric energy, comprising: wiring for supplying power to an electric railcar; and an energy storing unit connected to and capable of receiving and storing electric energy from the wiring, wherein the supply of the electric energy from the wiring to the energy storing unit is blocked when an operation time interval between electric rail cars is shorter than a predetermined time interval.

Description

Electric power energy storage system, electric power energy storage method, electric vehicle charging power providing system, and charging method of electric vehicle charging power and system

The present invention relates to a power energy storage system, a power energy storage method, a technology for supplying electric vehicle charging power, and a technology for charging the supplied power. In particular, the present invention relates to a technology that uses a wire to supply power to an electric vehicle.

Typical three-phase four-wire power lines can be connected to various loads used by consumers. Vendors of three-phase, four-wire power cannot force demand control, but can indirectly regulate power demand by controlling the cost of supply of seasonal and / or late night power. In general, midnight power is relatively inexpensive compared to daytime power because it consumes less power at night. By connecting energy storage devices to three-phase four-wire power lines, a system that stores power energy in the middle of the night and uses the stored power energy during the daytime for heating, etc., has made it possible to use the same power energy more cheaply. have.

The three-phase four-wire power line can be used for home and commercial use, the three-phase four-wire power line can also be connected to the electric vehicle charging station for charging the battery of the electric vehicle, which has recently started to spread. The power supplied to the electric vehicle from the electric vehicle charging station is usually power directly obtained from a three-phase four-wire commercial power line, or may be AC power decompressed therefrom or DC power generated by rectifying the AC power. While there is sufficient gas station infrastructure for cars using fossil fuels such as gasoline or diesel, infrastructure for battery charging in electric vehicles is relatively insufficient. In order to successfully commercialize electric vehicles, electric vehicle charging stations need to be installed everywhere.

On the other hand, in the field of railways that operate vehicles using electricity, such as urban railways, loads connected to electric wires connected to electric cars to provide driving power of the electric cars are substantially limited to electric cars and their auxiliary facilities. Thus, the operator supplying this driving power can control the electric power demand of the electric equipment connected to the live wire. That is, since the operating time interval between the electric cars can be set in advance, it is possible to control how much electric power demand will occur, for example, at what time of day.

As described above, power energy may be received from a three-phase four-wire commercial power line to store power energy in an energy storage device. Since enough energy is supplied from three-phase, four-wire commercial power lines, it can be stored at any time in the energy storage.

On the other hand, since the amount of power that the above-described wire can supply is limited, when the amount of load connected to the wire increases, the voltage of the wire may drop. As a result, the voltage of the cable may drop below the minimum allowable level to charge the energy storage device connected to the wire at any time, which may interfere with the operation of the electric vehicle and its auxiliary facilities connected to the wire. However, as described above, since the operator of the household can substantially control the electric power demand of the electric devices connected to the household wires, in the present invention, the power supplied from the household wires connected to the electric vehicle is charged to the energy storage device, but the other power connected to the household wires. It is intended to provide a technique that does not affect devices.

In addition, the present invention is to propose an electric vehicle charging / charging system that can be used to charge the electric vehicle using the renewable energy of the electric vehicle.

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

Power energy storage system according to an aspect of the present invention, a wire for supplying power to the electric vehicle, and an energy storage device is connected to the above line, the energy storage device is to receive and store the power energy from the above line. . At this time, when the time interval between trains is smaller than the predetermined time interval, the inflow of the power energy supplied from the above line into the above energy storage device is blocked.

According to another aspect of the present invention, there is provided a method for storing energy in an energy storage system including an energy storage device connected to a wire for supplying electric power to an electric vehicle and an energy storage device configured to receive and store power energy from the wire. In a system, a method of storing power energy in the above energy storage device. The method includes checking whether the driving speed between the trains is smaller than the predetermined speed, and when the driving speed between the powertrains is less than the predetermined speed, the power energy from the wires above is the energy storage device. Blocking the delivery to.

The charging system for electric vehicle charging power according to another aspect of the present invention is an energy storage device which is connected to a wire for supplying electric power to an electric vehicle, the wire above, and receives and stores electric power energy from the wire. And a charging server connected to the above energy storage device. At this time, when the driving distance between the electric cars is smaller than the predetermined distance, the power energy supplied from the above line is not to be introduced into the energy storage device, the energy storage device of the power stored in the energy storage device The charging server is configured to supply at least a portion of the electric vehicle charging station, and the charging server is configured to perform charging on the power of the at least part of the power supplied from the energy storage device.

According to another aspect of the present invention, a charging method for electric vehicle charging power includes an energy storage device connected to a wire for supplying electric power to an electric vehicle and an upper wire and capable of receiving and storing power energy from the wire. After supplying power for charging the electric vehicle using an energy storage system comprising a, it is a method of charging for the above supplied power. The method receives power energy from the wire and stores it in the energy storage device, supplying at least a portion of the stored power energy to the EV charging station, and at least some of the regenerative power supplied above. And generating charging information required to perform the charging on the billing server. In this case, the storing may include checking whether the driving speed between the trains is smaller than the predetermined speed, and when the driving speed between the power trains is smaller than the predetermined speed, the power energy from the wires is lower than the predetermined speed. Blocking the transfer to the energy storage device.

In one embodiment of the present invention, the regenerative power of the electric vehicle is used to provide electric power to the electric vehicle charging station. A power distribution system with wires for delivering power for accelerating an electric vehicle has been understood only as a system for consuming the final power, but in one aspect of the present invention is to be used as a system for supplying power to the outside of this power distribution system. A configuration is provided. In other words, the electric power flowing through the wire is used as an electric power supply system for supplying an electric device outside the system, for example, an electric vehicle.

On the other hand, the regenerative braking method can be used to save energy at the time of deceleration of the electric vehicle. Regenerative braking does not convert the kinetic energy of the train into heat / sound energy through mechanical friction and brakes when the vehicle decelerates. It refers to a technology that reduces the kinetic energy of electric cars by converting energy into electric energy. Thermal energy generated during mechanical braking is difficult to recycle, but electrical energy generated during regenerative braking has the advantage of being recyclable. In the present specification, the electric energy generated by converting the kinetic energy of the electric vehicle may be referred to as regenerative power.

The electric vehicle can be accelerated by receiving electric power from the wire. The regenerative power of the electric car may be stored in an electric energy storage device installed in the electric car, but may be returned to the wire. At this time, the regenerative power returned to the line may be used as energy for acceleration of another electric vehicle powered by the line. When the regenerative power of the electric vehicle returns to the live wire, the voltage of the live wire may fluctuate to an undesired level due to the regenerative power, which may cause the electric vehicle power supply system to become unstable, and It may cause a malfunction.

In one embodiment of the present invention, instead of providing the regenerative power of the electric vehicle to another electric vehicle or converting it into thermal energy, electric power may be provided to the electric vehicle charging station by using a technique of storing in an electric energy storage device connected to the wire.

There is provided a charging method according to an aspect of the present invention for solving the above problems. The method uses a regenerative power storage system including an electric vehicle, a power line for supplying power to the electric vehicle, and an energy storage device connected to the wire, and supplies power for charging the electric vehicle, and supplies the power to the supplied power. It is a way to charge for. The method also includes storing the regenerative power of the electric vehicle in an energy storage device via a wire electrically connected to the electric vehicle, supplying at least a portion of the stored regenerative power to the electric vehicle charging station, and the supplied Performing charging for at least some of the regenerative power.

According to another aspect of the present invention, a charging system is provided. The system includes an energy storage device connected to a wire that supplies power to the electric vehicle and configured to store the regenerative power of the electric vehicle through the wire, and a charging server connected to the energy storage device. The energy storage device is adapted to supply at least a portion of the power stored in the energy storage device to the electric vehicle charging station. And the charging server is configured to perform charging on at least a portion of the power supplied from the energy storage device.

According to another aspect of the present invention, there is provided a charging system. This system is a charging system for electric vehicle charging power that generates charging information to be provided to a charging server performing charging of electric vehicle charging power. The system includes an energy storage device connected to a wire supplying electric power to the electric vehicle, the energy storage device configured to store the regenerative power of the electric vehicle through the wire, and a billing information calculating device connected to the energy storage device. . At this time, the energy storage device is to deliver at least a portion of the power stored in the energy storage device to the electric vehicle charging station. The charging information calculating device collects information necessary for charging the power of at least a portion of the power transmitted from the energy storage device, and generates charging information that can be transmitted to the charging server.

According to another aspect of the present invention, a power providing system is provided. The system is an energy storage device configured to be connected to an electric vehicle charging station that is configured to store the regenerative power of the electric vehicle through the overhead line that is configured to supply electric power to the electric vehicle, and to store the regenerative power of the upper vehicle through the upper line. It includes. In this case, the energy storage device is configured to supply at least a portion of the regenerative power stored in the energy storage device to the electric vehicle charging station according to the request of the electric vehicle charging station.

According to another aspect of the present invention, a charging method is provided. The charging method uses the regenerative power storage system including an electric vehicle, a power line for supplying power to the electric vehicle, and an energy storage device connected to the wire, and supplies power for charging the electric vehicle, and the power supplied above. How to charge for. The method comprises the steps of storing the regenerative power of the electric vehicle in an energy storage device via a wire electrically connected to the electric vehicle, supplying at least a portion of the stored regenerative power to the electric vehicle charging station, and at least the supplied at least And generating charging information necessary for performing the charging on the part of the regenerative power and transmitting the charging information to the charging server.

According to the present invention, while charging the energy storage device with electric power supplied from the wires connected to the electric vehicle, it is possible to provide a technology that does not affect other power devices connected to the wires.

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

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

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

Figure 2 shows an example of the operating frequency of the urban railway 24 hours a day.

FIG. 3A illustrates a simulation of voltage variation at a specific point of a wire in a peak time interval, and FIG. 3B illustrates simulation of a voltage variation at a specific point of a wire in a non-peak period.

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

FIG. 5A illustrates a part of a power supply system of the electric vehicle charging system according to FIG. 4, and FIGS. 5B and 5C are modified examples from FIG. 5A.

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

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. The terms used below are merely for referring to specific embodiments, and are not intended to limit the present invention. Also, the singular forms used below include the plural forms unless the phrases clearly indicate the opposite meanings. BRIEF DESCRIPTION OF THE DRAWINGS The drawings attached to this specification are shown in part exaggerated or reduced for convenience of description, and the scale of each part of the components shown in the drawings may vary when actually implementing an embodiment of the present invention.

The power energy storage system of FIG. 1 is connected to a line 20 and a line 20 for supplying electric power to an electric vehicle 90 and an energy storage device configured to receive and store power energy from the line 20. 10) may be included. For example, the electric vehicle 90 may be a vehicle of an urban railway such as subway line 2 of Seoul, but is not limited thereto. The power delivered through the wire 20 is primarily for the operation of the electric vehicle 90, the energy storage device 10 is to serve to store the idle power of the wire 20. The power energy storage system of FIG. 1 may further include a three-phase four-wire power supply 61, a transformer 62, a rectifier 63, and a breaker 64. The voltage of the three-phase four-wire power supply 61 may be rectified to a DC voltage through the transformer 62 and the rectifier 63 and supplied to the electric vehicle 90 through the household wire 20. Instead of the three-phase four-wire power supply described above, a high voltage single phase power supply may be provided.

In an embodiment of the present invention, the energy storage device 10 may know information about a time interval between the trains 90. The service interval means the planned operating time interval of the electric vehicle 90. In the present specification, the 'peak sight' means a vehicle placement time interval when the driving is most frequent during the day, and the 'non-peak sight' means a vehicle placement time interval smaller than the peak sight. Peak sightings are shorter than non-peak sightings. In the case of urban railways, `` peak sight '' usually occurs at rush hour. Table 1 shows examples of peak and non-peak sights on seven of Seoul's subway lines. For example, Seoul Subway Line 2 consists of 43 stations (except branch lines). According to Table 1, a total of 32 vehicles can be arranged at peak intervals of 150 seconds. Specific values shown in Table 1 may be changed according to the operation plan of the metro operator.

Table 1

Line		Substation	Peak Sec (Number of Vehicles)	Non-peak speed (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 provided from the wire 20 to the electric vehicle 90 may not be produced by self-generation but may be supplied by being transformed from a three-phase four-wire power line. For this purpose, a substation (that is, a transformer) for coupling the three-phase four-wire power line and the line 20 may be installed near the line 20. In the case of the Seoul Subway Line 2, 13 substations are installed. This is a number that can be expanded or reduced further.

Figure 2 shows an example of the operating frequency of the urban railway 24 hours a day. The x-axis represents the time, and the y-axis represents the frequency of operation of the electric car. In general, the operating frequency has the maximum value during commute time. The running speed of the electric vehicle 90 has a relationship inversely proportional to the above-described driving frequency. Therefore, the running distance between the electric vehicles 90 is smaller than the predetermined distance indicates that the driving frequency of the electric vehicle 90 is larger than the predetermined driving frequency (eg, reference numeral 311).

FIG. 3A illustrates simulation of the voltage variation at a specific point of the line 20 in the peak time interval, and FIG. 3B illustrates non-peak variation of the voltage change at a specific point of the line 20. The simulation is shown in the section.

It is preferable to keep the voltage of the wire 20 constant to reduce the failure of the electric devices connected to the wire 20, but since the load at each point of the wire 20 varies with time, The voltage can change over time. In FIG. 3A, the voltage of the line 20 varies from as low as about 1400V to as high as about 1800V for 180 seconds. In FIG. 3B, the voltage of the line 20 varies from as low as about 1500V to as high as about 1750V for 360 seconds. As such, in general, the fluctuation range of the voltage of the wire 20 is greater in the peak interval than the non-peak interval. 3 (a) and 3 (b) show an example in which the driving interval between the electric cars is 180 seconds and 360 seconds, respectively, but this value may vary according to the operation plan of each urban railway.

When the energy storage device 10 is connected to the wire line 20 and charged at a time when the voltage of the wire line 20 falls below the predetermined threshold 322 shown in FIG. The instantaneous voltage may be lower than the lowest voltage shown in Fig. 3A. In this case, sufficient power may not be supplied to the electric vehicle 90. Therefore, in an embodiment of the present invention, charging of the energy energy to the energy storage device 10 may be stopped at a time period in which the voltage of the wire 20 falls below a predetermined threshold. For example, in the portion A of FIG. 2 having a high driving frequency, that is, the portion A in which the time point at which the voltage of the line 20 falls below the predetermined threshold 322, the line 20 is supplied from the line 20. Power energy may be blocked from entering the energy storage device 10.

As such, when the driving time is smaller than the predetermined time, the number of electric vehicles is running, so that the charging of the energy storage device 10 may be stopped so as to stably supply the electric power to be supplied to the electric car and its auxiliary facilities. Can be. At this time, blocking the introduction of power energy may be performed by a conventional switch device.

Referring back to FIG. 1, the electric power energy storage system may further include a control device 100 including information about a running speed between the electric vehicles 90. For example, the control device 100 may be a server including the operation information of the urban railway. The energy storage device 10 may be configured to receive information regarding the driving speed between the electric vehicle 90 from the control device 100 through a wired or wireless communication means. These wired and wireless communication means may be installed in the energy storage device 10 and the control device 100, respectively. In addition, although not shown, the control device 100 may communicate with the electric vehicle 90 to adjust the driving schedule of the control device 100.

On the other hand, in the modified embodiment of the present invention, even when the running speed between the electric vehicle 90 is smaller than the predetermined speed (for example, section A of FIG. 2), the voltage of the line 20 is a predetermined voltage (for example, FIG. If greater than 322 of 3 (a) it is possible to allow the power energy supplied from the line 20 to enter the energy storage device (10). This is because even when the electric vehicle 90 is frequently driven, the voltage of the electric wire 20 does not drop below the minimum allowable value even when the energy storage device 10 is charged when the voltage of the electric wire 20 is greater than or equal to a predetermined voltage. Because it does not interfere with the operation.

A power energy storage method according to another embodiment of the present invention will be described with reference to FIGS. 1 to 3. The method includes a wire 20 for supplying power to an electric vehicle 90 and an energy storage device 10 connected to the wire 20 and configured to receive and store power energy from the wire 20. In an energy storage system, a method of storing power energy in the energy storage device 10.

The method may include a step (S101) of checking whether the running speed between the electric vehicles 90 is smaller than the predetermined speed. This step S101 may be performed by the energy storage device 10 or by a control module for controlling a switch device connected to the energy storage device 10. For this purpose, a control device combining an FPGA, an ASIC, or a commercially available control logic chip may be provided.

Then, when the running speed between the electric vehicle 90 is less than the predetermined speed, it may include the step (S102) of blocking the transmission of the power energy from the wire 20 to the energy storage device (10). The predetermined time interval may be, for example, a value corresponding to the driving frequency of the electric vehicle predefined by reference numeral 311 of FIG. 2.

At this time, the step of checking (S101), the energy storage device 10 receives the step of receiving information about the running time between the electric vehicle 90 from the control device via a wired or wireless communication means (S1011) It may include.

In addition, the step of blocking (S102), the step of checking whether the voltage of the wire 20 is greater than the predetermined voltage when the running interval between the electric vehicle 90 is less than the predetermined interval (S1021). can do. In this case, when the voltage of the household wire 20 is greater than the predetermined voltage, power energy supplied from the household wire 20 may be introduced into 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 the electric vehicle connected to the wire 20.

Referring to FIG. 4, the 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 power supply 61 may be rectified to a DC voltage through the transformer 62 and the rectifier 63 and supplied to the electric vehicle 90 through the household wire 20. When the electric vehicle 90 accelerates, the electric vehicle 90 may be supplied with DC power through the wire 20. On the contrary, when the electric vehicle 90 decelerates, the regenerative power is generated through the regenerative braking system installed in the electric vehicle 90, and the generated regenerative power can be returned to the line 20 again. The overvoltage generated in the line 20 by the regenerative power may be used for other electric vehicles, but may be stored in the energy storage device 10.

The electric vehicle charging station 30 may be connected to the energy storage device 10. Since the regenerative power of the electric vehicle 90 is intermittently generated, when the electric vehicle charging station 30 is directly connected to the wire 20, it may not be possible to obtain the required regenerative power from the wire 20 at a necessary time. The energy storage device 10 may store the regenerative power of the electric vehicle generated intermittently from the wire 20 to serve as a buffer to provide a constant power at the 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 a plurality of 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, 31 may be operated by different operating entities. In this case, the energy storage device 10 may record the amount of power provided to the EV charging stations 30 and 31 and charge the operator of the EV charging stations 30 and 31. The charging server 40 for charging may be connected to the energy storage device 10 through one or more wireless or wired communication networks. The billing server 40 is the financial information of the financial institution that deals with the owner of the electric vehicle charging station (30, 31) the cost corresponding to the amount of power provided by the energy storage device 10 to the electric vehicle charging station (30, 31) Claims can be made to the processing servers 70 and 71.

In another embodiment of the present invention, the energy storage device 10 and the electric vehicle charging stations 30 and 32 may be operated by the same operator. At this time, the energy storage device 10 or the electric vehicle charging stations 30 and 32 records the amount of power provided to the electric vehicles 50 and 52 and charges the electric vehicles 50 and 52 with electricity (eg, The operator of the electric vehicle can be charged. The charging server 40 for charging may be connected to the energy storage device 10 or the electric vehicle charging stations 30 and 32 through a wireless or wired communication network. The billing server 40 is a financial institution that deals with a person who charges the electric vehicles 50 and 52 with a cost corresponding to the amount of power provided by the electric vehicle charging stations 30 and 32 to the electric vehicles 50 and 52. Claims can be made to the financial information processing servers 70 and 72.

In FIG. 4, the electric vehicle charging station 30 may not only be powered from the energy storage device 10, but also or alternatively receive the AC power decompressed by the transformer 65 from the three-phase four-wire power supply 61. Can be supplied. The reduced AC power may be converted into DC power in the EV charging station 30, or may be supplied to the EV charging station 30 after the DC power is converted by another device not shown. The electric vehicle 50 may receive DC power supplied from the energy storage device 10 or AC power supplied from the three-phase four-wire power supply 61 or DC power rectified therefrom.

Referring to FIG. 5A, the energy storage device 10 may directly transfer the data necessary for the charging server 40 to charge the charging server 40. The billing amount may vary depending on the time period during which the EV charging stations 30 and 31 or the EVs 50 and 52 are powered from the energy storage device 10, and may also depend on the geographical location of the EV charging station 30. Can be. That is, when power is supplied at midnight, a relatively small amount may be charged than a day, and when a power is supplied in a rare area, a relatively large amount may be charged rather than a large place. In order to perform this calculation in each energy storage device 10, additional electronics for making this calculation may need to be coupled to each energy storage device 10. This may be a factor to increase the unit cost of the energy storage device (10).

In another embodiment of the present invention as shown in FIG. 5B, the specific charge amount may not be calculated in the energy storage device 10 instead of storing information such as the person to be charged, the amount of power supplied, and / or the supply time. Then, information such as the billing subject, the amount of power supplied and / or the supply time may be transmitted to a separate power supply cost calculation server 80 by a simple communication protocol. The power supply cost calculation server 70 may calculate a power supply cost for a specific billing subject and transfer the calculated power supply cost to the billing server 40. Then, the billing server 40 may charge the calculated power supply cost to the financial information processing server 70 of the financial institution that the billing subject deals with. In this case, the charging server 40 and the power supply cost calculation server 80 may be different devices.

In another embodiment of the present invention as shown in FIG. 5C, the charging information calculating device 11 collects information necessary for charging from the energy storage device 10 and processes the information to be charged to the charging server 40. It may be intended to. In this case, the charging information calculating device 11 may be formed integrally with the energy storage device 10 or may be provided as a separate device. The information necessary for charging may include information such as the charging subject, the amount of power supplied, and / or the supply time as described above, but is not limited thereto. Information necessary for charging may be delivered to the charging server 40 through the power supply cost calculation server 80. In this case, the power supply cost calculation server 80 and the charging server 40 may be provided as a separate device or implemented in the same device.

Since the regenerative electric power is generated when the electric vehicle 90 decelerates, it can be installed near the electric vehicle station where the electric vehicle 90 decelerates, but the present invention is not limited thereto.

Referring to FIG. 6A, the method may include storing regenerative power of an electric vehicle in an energy storage device through wires (S301), supplying at least a portion of regenerative power stored in the energy storage device to an electric vehicle charging station (S302), And performing charging for the supplied at least some regenerative power (S303). In this case, step S301 and step 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 may include storing regenerative power of an electric vehicle in an energy storage device through wires (S401), supplying at least a portion of the regenerative power stored in the energy storage device to an electric vehicle charging station (S402), And generating charging information necessary for performing charging related to at least some of the supplied regenerative power and delivering the charging information to the charging server (S403). In this case, step S401 and step S402 may be performed in the energy storage device. In operation S403, the charging information calculating apparatus 11 may be performed.

Hereinafter, a charging method according to an embodiment of the present invention will be described with reference to FIGS. 4 and 6A. This charging method uses an electric vehicle 50 using a regenerative electric power storage system including an electric vehicle 90, a wire 20 for supplying electric power to the electric car 90, and an energy storage device 10 connected to the wire 20. Supplying power for charging the charging method for the power supplied. The method includes storing the regenerative power of the electric vehicle 90 in the energy storage device 10 through the wire 20 electrically connected to the electric vehicle 90 (S301), and storing at least a part of the stored regenerative power in the electric vehicle charging station. It may include the step (S302) of supplying to (30), and the step (S303) of performing charging for the supplied at least some of the regenerative power.

At this time, the step of performing the charging (S303) may be performed by the charging server 40 connected to the energy storage device (10). Above, charging for at least some of the regenerative power supplied may be charging for the supply cost of regenerative power supplied to the electric vehicle charging stations 30 and 31 for a predetermined time. Alternatively, the charging of at least some of the regenerative power supplied may be a charging of the supply cost of the regenerative power supplied to the specific electric vehicles 50 and 52 through the electric vehicle charging stations 30 and 32.

A charging system for electric vehicle charging power according to another embodiment of the present invention will be described with reference to FIG. 4. The charging system is connected to the wire 20 for supplying power to the electric vehicle 90, the energy storage device 10 is configured to store the regenerative power of the electric vehicle 90 through the wire 20, and the energy storage It may include a charging server 40 connected to the device 10. In this case, the energy storage device 10 may be configured to supply at least a portion of the electric power stored in the energy storage device 10 to the electric vehicle charging station 30. In addition, the charging server 40 may be configured to perform charging for at least some of the power supplied from the energy storage device 10.

A charging system for electric vehicle charging power according to another embodiment of the present invention will be described with reference to FIGS. 4 and 5C. The charging system is a system for generating charging information provided to the charging server 40 that performs charging of electric vehicle charging power. The system is connected to an electric wire 20 for supplying electric power to the electric vehicle 90, and an energy storage device 10, and an energy storage device configured to store the regenerative power of the electric vehicle 90 through the electric wire 20. It may include a charging information calculation device 11 connected to (10). In this case, the energy storage device 10 may be configured to transmit at least a portion of the power stored in the energy storage device 10 to the electric vehicle charging station 30. In addition, the billing information calculating device 11 may be configured to generate billing information that can collect information necessary for billing regarding at least a portion of the power delivered from the energy storage device 10 and transmit the billing information to the billing server 40. have.

A power providing system for charging an electric vehicle according to another embodiment of the present invention will be described with reference to FIG. 4. The system is configured to store the regenerative power of the electric vehicle 90 through the wire 20 and the wire 20, which are configured to supply electric power to the electric vehicle 90, and to supply electric power to the electric vehicle 50. It may include an energy storage device 10 adapted to be connected to the charging station 30. In this case, the energy storage device 10 may be configured to supply at least a portion 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 vehicle charging station 30 is to be connected to a power source transformed from the energy storage device 10 and the three-phase four-wire power supply 61, the power supplied from the energy storage device 10 or the transformed above The electric vehicle 50 may be charged by using power supplied from a power source.

At this time, the system is configured to generate charging information necessary for performing charging regarding at least some of the regenerative power supplied to the electric vehicle charging station 30, and the charging information calculating device connected to the energy storage device 10 ( 11) may be further included.

In this case, the charging of the at least some of the regenerative power supplied may be the charging of the supply cost of the regenerative power supplied to the EV charging stations 30 and 31 for a predetermined time. Alternatively, the charging of at least some of the regenerative power supplied may be a charging of the supply cost of the regenerative power supplied to the specific electric vehicles 50 and 52 through the electric vehicle charging stations 30 and 32.

In the above, the charging information may include information on the amount of regenerative power supplied, the time at which the supplied regenerative power was supplied, and the consumer of the supplied regenerative power.

A charging method of the electric vehicle charging power according to another embodiment of the present invention will be described with reference to FIGS. 4, 5C, and 6B. This method uses an electric vehicle 50 using a regenerative power storage system including an electric vehicle 90, an electric wire 20 for supplying electric power to the electric car 90, and an energy storage device 10 connected to the electric wire 20. Supplying power for charging the charging method for the power supplied. The method stores the regenerative power of the electric vehicle 90 in the energy storage device 10 through the wire 20 electrically connected to the electric vehicle 90 (S401), at least a part of the stored regenerative power is stored in the electric vehicle charging station ( 30), and generating charging information necessary for performing charging regarding at least some of the supplied regenerative power and delivering the charging information to the charging server 40 (S403). In this case, the charging information may be provided by the charging information calculating device 11.

In the present specification, the 'energy storage device' may be, for example, a device including a rechargeable battery for charging energy by an electrochemical method, but is not limited thereto. Electrical energy supplied from the live wire may be directly stored in the storage module of the energy storage device or may be stored in the storage module via an electromechanical energy conversion module. The energy storage device may supply energy to the outside in an electrical form, for example, and may be used as a storage device for supplying charging power to an electric vehicle, a storage device for storing regenerative energy, and a large capacity energy storage device. It is not limited to this.

Although the present invention has been described in connection with the preferred embodiment, those skilled in the art will be able to easily make various changes and modifications without departing from the essential characteristics of the present invention.

Therefore, the disclosed embodiments should be considered in descriptive sense only and not for purposes of limitation, and the true scope of the present invention is shown in the claims rather than the foregoing description, and all differences within the equivalent scope are included in the present invention. Should be interpreted as.

Claims

An electric wire for supplying electric power to the electric vehicle; And

An energy storage device connected to the wire and configured to receive and store power energy from the wire.

Including;

When the time interval between trains is smaller than a predetermined time interval, the inflow of power energy supplied from the wire into the energy storage device is prevented.

Power energy storage system.
The apparatus of claim 1, further comprising a control device including information about a time interval between the trains, wherein the energy storage device is configured to transmit information about the time interval between the trains from the control device in a wired or wireless manner. Power energy storage system, adapted to receive via communication means.
The energy storage device of claim 1, wherein when the running distance between the electric vehicles is smaller than the predetermined distance, when the voltage of the wire is greater than a predetermined voltage, power energy supplied from the wire is introduced into the energy storage device. Power energy storage system.
The power energy storage system of claim 1, wherein at least a portion of the power energy includes regenerative power of an electric vehicle connected to the overhead line.
An energy storage system comprising: a power line for supplying electric power to an electric vehicle; and an energy storage device connected to the wire and configured to receive and store power energy from the wire. ,

Checking whether a time interval between trains is smaller than a predetermined time interval; And

Blocking the transmission of power energy from the wire to the energy storage device when the driving distance between the electric vehicles is smaller than the predetermined distance.

Including,

Power energy storage method.
The method of claim 5,

The energy storage system further includes a control device that includes information about the running speed between the electric vehicle,

The checking may include the step of receiving, by the energy storage device, information about a driving interval between the electric vehicles from the control device through a wired or wireless communication means.

Power energy storage method.
The method of claim 5,

The blocking may include checking whether the voltage of the wire is greater than a predetermined voltage when the driving interval between the electric vehicles is smaller than the predetermined speed,

When the voltage of the wire is greater than the predetermined voltage, power energy supplied from the wire is introduced into the energy storage device,

Power energy storage method.
An electric wire for supplying electric power to the electric vehicle;

An energy storage device connected to the wire and configured to receive and store power energy from the wire; And

A charging server connected to the energy storage device;

Including;

When the time interval between the trains is smaller than the predetermined time interval, the power energy supplied from the wire is not introduced into the energy storage device,

The energy storage device is configured to supply at least a portion of the power stored in the energy storage device to an electric vehicle charging station,

The charging server is configured to perform the charging for the at least some of the power supplied from the energy storage device,

Charging system for electric vehicle charging power.
The method of claim 8,

The apparatus further includes a charging information calculating device connected to the energy storage device.

The billing information calculating device is configured to generate billing information that can collect information necessary for billing about the at least some of the power delivered from the energy storage device and transmit the billing information to the billing server.

Charging system for electric vehicle charging power.
The electric vehicle charging station of claim 8, wherein the electric vehicle charging station is configured to be connected to a power transformed from the energy storage device and a three-phase four-wire power supply, and uses power supplied from the energy storage device or power supplied from the transformed power supply. Charging the electric vehicle to charge the electric vehicle.
The charging system of claim 8, wherein the charging for at least some of the power is charging for power supplied to a specific electric vehicle through the electric vehicle charging station.
The electric vehicle charging power of claim 9, wherein the charging information includes information on the amount of the at least part of the electric power supplied, the time at which the at least part of the electric power is supplied, and information about the consumer of the at least part of the electric power. Billing system.
Supplying electric power for charging an electric vehicle by using an energy storage system including an electric wire for supplying electric power to an electric vehicle and an energy storage device connected to the electric wire and configured to receive and store electric power energy from the electric wire; As a method of charging for the power supplied,

Receiving power energy from the wire 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 charging information necessary to perform charging on the stored at least some of the stored power energy and transmitting the charging information to a charging server;

Including;

The storing may include checking whether a time interval between electric vehicles is smaller than a predetermined time interval, and when the driving time interval between the electric vehicles is smaller than the predetermined time interval, power energy from the wire is equal to the energy. Blocking the transfer to storage;

Charging method for electric vehicle charging power.
The method of claim 13,

The energy storage system further includes a control device that includes information about the running speed between the electric vehicle,

The checking may include the step of receiving, by the energy storage device, information about a driving interval between the electric vehicles from the control device through a wired or wireless communication means.

Charging method for electric vehicle charging power.