WO2018097449A1

WO2018097449A1 - Electrical vehicle charging system

Info

Publication number: WO2018097449A1
Application number: PCT/KR2017/007978
Authority: WO
Inventors: 안창모
Original assignee: 디엔비하우징(주)
Priority date: 2016-11-28
Filing date: 2017-07-25
Publication date: 2018-05-31
Also published as: KR101777150B1

Abstract

The present invention relates to an electrical vehicle charging system enabling the state of charge of power of each of a plurality of multi-linked energy storage devices to stay consistent and thus stably charging an electrical vehicle even in a region having insufficient commercial power supply and inadequate climate and natural environment.

Description

Electric Vehicle Charging System

The present invention relates to an electric vehicle charging system, and more particularly, to maintain a constant state of charge of each of a plurality of energy storage devices connected in multiple, even in areas where there is a lack of commercial power supply and poor climate and natural environment The present invention relates to an electric vehicle charging system capable of stably charging an electric vehicle.

Due to the use of petroleum, the raw material of automobiles, carbon dioxide emission is increased, and global warming phenomenon and abnormal climate phenomenon are occurring, and automobile manufacturing technology has been developed to reduce carbon dioxide emission. There is a great deal of research into the interest and the resulting production technology.

Hybrid cars using electric motors and gasoline engines are already commercialized and sold as such eco-friendly vehicles. In addition, research on hydrogen fuel cars and electric cars has been actively conducted.

As a commercial vehicle, the next most concentrated research area is a study on electric vehicles that operate only with electric motors.

The electric vehicle (EV) refers to a vehicle using an electric charger and an electric motor, rather than using an engine based on petroleum fuel.

The electric vehicle has to supply electricity to the charger in place of petroleum raw materials, and the battery inside the electric vehicle is charged by a general charging system in a parked state.

There are some problems to commercialize and activate the electric vehicle thus developed. One of the most discussed problems is the lack of such charging facilities.

In particular, in areas with poor climate and natural environment and where there is not abundant power energy resources, especially in extreme environmental areas such as Central Asia and Russia, the use of electric energy charging facilities is expensive. Is even more difficult.

The present invention enables to maintain a constant state of charge of each of the plurality of energy storage devices connected to the multiple, electric vehicle charging capable of charging the electric vehicle stably even in areas where commercial power supply is insufficient and the climate and natural environment is poor It is an object to provide a system.

An electric vehicle charging system according to an embodiment of the present invention, the power supply unit for maintaining a constant state of charge of each of the plurality of energy storage devices connected to the multiple, power supply to the battery of the electric vehicle; A charging unit connected to the power supply unit and having a plurality of ports arranged in parallel; An input unit configured to receive a charging method and a charging start time of the charging unit; A display unit displaying a charging state and a charge amount of a battery of the electric vehicle charged through the charging unit; And a control unit connected to the charging unit and controlling the supply of electric power.

According to an aspect of the present invention, the power supply unit includes a plurality of energy storage devices for generating and storing power by renewable energy generation, including photovoltaic power generation and wind power generation; When the remaining power amount of each of the plurality of energy storage devices is compared with a predetermined reference power amount, when the remaining power amount of at least one of the plurality of energy storage devices is less than or equal to the reference power amount, the remaining power amount among the plurality of energy storage devices is the most. And an energy operating server that controls the large energy storage device to supply power to the energy storage device that is less than or equal to the reference power amount.

According to an aspect of the present invention, each of the plurality of energy storage device, a power generator including a solar generator and a wind generator, a power storage for storing the power generated by the power generator, and the power It includes a power management unit for calculating the remaining amount of power stored in the storage unit to generate the remaining power amount data.

According to one aspect of the invention, the wind generator uses a vertical axis wind turbine.

According to an aspect of the present invention, the energy operation server receives the remaining power amount data from the power management unit, compares a predetermined reference power amount, and sequentially from the remaining power amount to the smallest or from the smallest remaining power to the largest Energy level comparison module to summarize; And an energy level control module using the result data of the energy level comparison module to generate a charge message instructing to supply power from one of the plurality of energy storage devices to another energy storage device.

According to an aspect of the present invention, the energy level control module generates a charging message such that the energy storage device having the largest remaining power amount supplies power to the energy storage having the smallest remaining power amount.

According to an aspect of the present invention, the energy storage device is preferably a container type house or a container type smart farm in which a solar generator and a wind generator are installed outside.

Other specific details of embodiments according to various aspects of the present invention are included in the following detailed description.

According to an embodiment of the present invention, it is possible to maintain a constant state of charge of each of the plurality of energy storage devices connected to the multiple, it is possible to stably charge the electric vehicle even in a region where there is a lack of commercial power supply and poor climate and natural environment. Can provide an electric vehicle charging system.

1 is a block diagram showing an electric vehicle charging system according to an embodiment of the present invention.

2 and 3 is a conceptual diagram showing an electric vehicle charging system according to an embodiment of the present invention.

4 is a block diagram showing a power supply unit of an electric vehicle charging system according to an embodiment of the present invention.

5 is a conceptual diagram illustrating a power supply unit of an electric vehicle charging system according to an embodiment of the present invention.

6 is a conceptual diagram illustrating a container house to which an energy storage device (ESS) is applied.

7 is a conceptual diagram illustrating a container type smart farm to which an energy storage device (ESS) is applied.

8 is a block diagram illustrating an energy storage device.

9 is a flowchart illustrating an operation process of a power supply unit in an electric vehicle charging system according to an embodiment of the present invention.

As the present invention allows for various changes and numerous embodiments, particular embodiments will be illustrated and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all transformations, equivalents, and substitutes included in the spirit and scope of the present invention.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present invention, the terms 'comprise' or 'have' are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof. Hereinafter, an electric vehicle charging system according to an embodiment of the present invention with reference to the drawings.

1 is a block diagram showing an electric vehicle charging system according to an embodiment of the present invention. 2 and 3 is a conceptual diagram showing an electric vehicle charging system according to an embodiment of the present invention. 4 is a block diagram showing a power supply unit of an electric vehicle charging system according to an embodiment of the present invention. 5 is a conceptual diagram illustrating a power supply unit of an electric vehicle charging system according to an embodiment of the present invention. 6 is a conceptual diagram illustrating a container house to which an energy storage device (ESS) is applied. 7 is a conceptual diagram illustrating a container type smart farm to which an energy storage device (ESS) is applied. 8 is a block diagram illustrating an energy storage device.

As shown in FIG. 1, an electric vehicle charging system according to an exemplary embodiment of the present invention includes a power supply unit 1100, a charging unit 1200, an input unit 1300, a display unit 1400, and a controller 1500. .

The power supply 1100 supplies power to the battery of the electric vehicle through the charging unit 1200. The power supply unit 1100 may include a distribution panel provided with an earth leakage breaker or a circuit breaker in order to safely use electricity. The power supply unit 1100 may include an electric meter to read the amount of usage when using an external power source.

In an embodiment of the present invention, the power supply unit 1100 does not charge the electric vehicle by receiving power from the outside, but generates and stores renewable energy such as solar energy and wind energy to charge the electric vehicle.

In an embodiment of the present invention, the power supply unit 1100 is configured as a multi-linked power supply system, each of which a plurality of independent structures each generate and store its own power, and is linked to distribute power between the plurality of independent structures. The power supply unit 1100 according to the embodiment of the present invention will be described later.

The charging unit 1200 is connected to the power supply unit 1100 and supplies the power supplied from the power supply unit 1100 to the battery of the electric vehicle parked in the parking area (or the charging area).

As shown in FIG. 2, the charging unit 1200 includes two or more ports. Two or more ports can each be connected to an electric vehicle to conveniently charge two or more electric vehicles.

The charging unit 1200 charges the electric vehicle may include a fast charging method and a low speed charging method. The fast charging method and the low speed charging method are classified according to a charging time and an applied voltage for the power supply unit 1100 to recharge the battery of the electric vehicle to a predetermined level.

Each of the plurality of ports of the charging unit includes a high speed charging unit or a low speed charging unit. The fast charging unit applies a DC voltage of 100V or more and 450V or less to the battery of an electric vehicle. The high speed charging unit receives a voltage supplied from the power supply unit 1100, for example, a voltage of 380 V in three phases of AC and converts it into a voltage capable of high speed charging, for example, a DC voltage of 400 to 450 V to charge an electric vehicle. It usually takes about 15-30 minutes to charge.

If the fast charging area is designated in the charging zone for high speed charging, and the owner who wants to charge the battery of the electric vehicle at high speed specifies the time and capacity for charging through the input unit 1300, the fast charging unit is 400-450V DC. The battery of the electric vehicle can be charged by supplying power.

The low speed charging unit applies a DC voltage of 220V to the battery of the electric vehicle. The low speed charging unit charges an electric vehicle by receiving a voltage supplied from the power supply unit 1100, for example, a voltage of 220V of an AC single phase, and converting it into a voltage capable of low speed charging, for example, a DC voltage of 220V. Charging takes about 5-6 hours.

If the owner who wants to charge the battery of the electric vehicle parked in the zone designated as the low speed charging zone in the charging zone for the low speed charging designates the time and capacity to charge through the input unit 1300, the low speed charging unit is a DC 220V power. It is possible to charge the battery of the electric vehicle by supplying.

The input unit 1300 receives a charging method and a charging time of the charging unit 1200 for charging the electric vehicle.

The display unit 1400 displays the state of charge and the amount of charge of the battery of the electric vehicle charged through the charging unit 1200. The user can check the battery charging state and the current charging amount, the estimated time of charging, the expected charge, etc. of the vehicle. Information input to the input unit 1300 and information displayed on the display unit 1400 are transmitted to the user's portable terminal, so that the user can check the charging state in real time.

The controller 1500 is connected to the charging unit and controls the supply of power. When a plurality of electric vehicles are connected to a plurality of ports provided in the charging unit 1200, the plurality of electric vehicles are sequentially charged. The controller 1500 schedules charging times of the plurality of electric vehicles based on a time point at which information of the electric vehicle is input and an input charge start time, and controls power supply for each port. The controller 1500 cuts off the electricity supplied to the battery of the electric vehicle, in which the charging is completed when the charging of the electric vehicle battery is completed or the user completes charging by the charging capacity.

When the charging is completed, the display unit 1400 displays the completion of charging, and notifies the user of the completion of the charging to enable the rapid movement of the charged electric vehicle for parking of the waiting electric vehicle that is not worn in the charging area.

Next, the power supply unit 1100 according to the embodiment of the present invention will be described.

In the embodiment of the present invention, the power supply unit 1100, as illustrated in FIG. 3, is a multi-connected power supply associated with a plurality of independent structures each generate and store their own power, and distribute the power between the plurality of independent structures It consists of a system. That is, each independent structure has an energy storage device, and each energy storage device is maintained so that the power state of charge is constant. Here, “the state of charge of the power is constant” does not mean that the state of charge of all the energy storage devices is the same, but it means maintaining a certain range based on the reference value.

In an embodiment of the present invention, the power supply 1100 includes a plurality of energy storage devices 100 and an energy operation server 200, as shown in FIG.

Each of the plurality of energy storage systems (ESS: 100a to 100e) is a device for generating and storing power, and may be applied to an independent structure that generates and stores power by itself. This independent structure may be, for example, a containerized house as illustrated in FIG. 6, or may be a containerized smart farm as illustrated in FIG. 7.

The container-type house shown in FIG. 6 can be easily constructed where the user desires by improving the housing in the container, and the interior of the container is provided with furniture, appliances, toilets, and the like for the user.

The solar generator 111 and the wind generator 112 is installed outside the container, and stores the power generated by the solar generator 111 and the wind generator 112 to be applied to all the power used in the house.

Container-type houses can be designed to meet the power loads (e.g. daily load: 1.5 kWh, based on eight batteries of 100 AH) that are considered to be the minimum necessary for residential living in the absence of electrical infrastructure. In order to compensate for the shortcomings of power generation fluctuations in the solar power generation time and the solar generator 111 and the wind generator 112 is mounted in a hybrid type.

The container type smart farm shown in FIG. 7 is a container type smart farm using stand-alone renewable energy capable of performing hydroponic cultivation without supplying energy from the outside by using renewable energy. Hydroponic cultivation (A) that can be grown may be installed one or a plurality. Hydroponic cultivation may be installed on the same plane, but may be arranged in a stacked form for space utilization. And the discharge hole for the discharge of water is formed at the bottom of one side of the hydroponic cultivation.

Referring back to FIG. 4, each of the energy storage devices 100a to 100e is a storage device for storing power generated by a power generation facility applied to the container-type house or container-type smart farm, and each container-type house or The container type smart farm will have one energy storage device.

Each of the energy storage devices 100a to 100e generates and stores energy independently of each other, but is connected by a common power line L, and when the amount of power remaining in any one energy storage device is less than the reference value, It is possible to charge the insufficient power by the energy storage device having a large amount of remaining power among the energy storage device.

To this end, as shown in FIG. 8, each of the energy storage devices 100a to 100e includes a power generation unit 110, a power storage unit 120, and a power management unit 130.

The power generator 110 generates power from natural forces, and in the present embodiment, includes a solar generator 111 and a wind generator 112. Of course, it is not necessarily limited thereto, and may include all kinds of renewable energy generators that are commercially available according to technology development.

When the power generator 110 is configured by the solar generator 111 and the wind generator 112, the solar generator 111 and the wind generator 112 are installed in the same energy storage device. In order to minimize the power loss of the solar generator 111 by the shadow of the blade, the wind generator 112 preferably uses a vertical axis wind turbine. By using a vertical axis wind turbine can effectively utilize the limited space, it is possible to minimize the size of the energy storage device (100).

The power storage unit 120 stores the power generated by the power generation unit 110.

The power manager 130 controls the supply of power required for use of the independent structure by automatic or user command, and calculates the remaining amount of power stored in the power storage unit 120 to generate remaining power amount data.

The power manager 130 includes, for example, a power usage meter such as a meter. The meter includes a current measuring unit and a voltage measuring unit, and measures the current and voltage supplied to the load, respectively, and measures the amount of power used using the measured current and voltage values. The power manager 130 calculates the amount of power remaining by subtracting the amount of power used measured by the meter from the power capacity stored in the power storage unit 120.

The power manager 130 periodically transmits the calculated remaining power amount to the energy operation server 200. Alternatively, when the request message is received from the energy operation server 200, the calculated remaining power amount is transmitted to the energy operation server 200.

The power management unit 130, in the power supply control required for the use of the independent structure, the heating and cooling device inside the independent structure (for example, a container-type house) to be sequentially contacted by the battery voltage and the priority compared to the power used, By automatically blocking the home appliances, lighting devices, and refrigerators, power stored in the power storage unit 120 may be controlled to be used for a long time.

The energy operation server 200 compares the remaining power amount of each of the plurality of energy storage devices 100a to 100e with a predetermined reference power amount, and the remaining power amount of at least one of the plurality of energy storage devices 100a to 100e is a reference power amount. In the case of the following, the energy storage device having the largest remaining power amount among the plurality of energy storage devices is controlled to supply power to the energy storage device having a reference power amount or less.

To this end, the energy operation server 200 includes an energy level comparison module 210 and an energy level control module 220. In addition, the emergency generator 300 may include an emergency generator control module 230 for controlling the operation.

The energy level comparison module 210 periodically receives the remaining amount of power data from the power management unit 130 of the energy storage devices 100a to 100e. Alternatively, the energy level comparison module 210 transmits a request message for requesting the remaining power amount data to the power management unit 130 of the energy storage devices 100a to 100e when necessary aperiodically. The power manager 130 receiving the request message of the energy level comparing module 210 transmits the remaining power amount data to the energy level comparing module 210.

The energy level comparison module 210 compares the received remaining power amount data with a predetermined reference power amount, and sequentially arranges the remaining power amount from the largest to the lowest. Alternatively, the remaining power amounts are arranged in descending order from smallest to largest. The energy level comparison module 210 transmits the result data to the energy level control module 220.

The energy level control module 220 receives the result data from the energy level comparison module 210 and determines an energy storage device having a remaining power amount or less than a reference power amount. In addition, the energy level control module 220 determines the energy storage device having the largest remaining power amount, generates a charge message instructing to supply power from the latter energy storage device to the former energy storage device, and then, Transmission to the power management unit 130 included in the energy storage device.

The power management unit 130 receiving the charge message controls the power storage unit 120 to supply power to the energy storage device having a residual amount of power or less through the power line L.

On the other hand, when there are two or more energy storage devices that are less than the reference power amount, the energy level control module 220 generates a charging message instructing to supply power from the energy storage device having the largest remaining power amount to the energy storage device having the smallest remaining power amount. In addition, the controller generates a charging message instructing to supply power from the energy storage device having the second largest amount of power to the energy storage device having the second smallest amount of power.

Of course, when more energy storage devices are provided, a similar process may be performed to supplement the insufficient power between the energy storage devices. In some cases, the charging message may be generated such that the energy storage device having the largest remaining power amount supplies power to the energy storage device having the smallest remaining power amount without having to compare the remaining power amount with the reference value.

The emergency generator control module 230 is included in any one or more energy storage devices of each of the energy storage devices 100 or when the power generated by the solar generator and the wind power generator is insufficient due to deterioration of weather conditions. Controls the operation of the emergency generator 300 for supplying emergency energy to the energy storage device during abnormal operation, such as when the power generation unit 110 is insufficient power of the energy storage device due to the poor operation of the power generator 110.

Next, the operation of the power supply unit in the electric vehicle charging system according to an embodiment of the present invention will be described with reference to FIG. 9.

The energy level comparison module 210 of the energy operation server 200 uses the remaining power amount data received from the power management unit 130 of the plurality of energy storage devices 100a to 100e to store the plurality of energy storage devices 100a to 100e. Each energy level is monitored (S100).

The energy level comparison module 210 arranges the remaining power in order from the largest to the lowest. Alternatively, the remaining power amounts are arranged in descending order from smallest to largest. The energy level control module 220 determines an energy storage device having the least amount of remaining power (S200).

The energy level control module 220 determines an energy storage device having the largest amount of remaining power and generates a charging message instructing to supply power to the energy storage device having the least amount of remaining power, thereby generating power of the energy storage device having the largest amount of remaining power. Transmission to the management unit 130 (S300).

The power management unit 130 receiving the charge message controls the power storage unit 120 to supply power to a predetermined energy storage device through the power line (L).

The energy level control module 220 determines an energy storage device having the second largest amount of remaining power and generates a charging message instructing to supply power to the energy storage device having the second smallest amount of remaining power. The large energy storage device transmits to the power management unit 130. The power management unit 130 receiving the charge message controls the power storage unit 120 to supply power to a predetermined energy storage device through the power wire L (S400 and S500).

The energy level control module 220 determines an energy storage device having the third largest remaining power amount, and transmits a load blocking / charging start message to the energy storage device. The power management unit 130 receiving the control block the power supply to the load by controlling the power storage unit 120 and starts charging (S600, S700).

As mentioned above, although an embodiment of the present invention has been described, those of ordinary skill in the art may add, change, delete or add components within the scope not departing from the spirit of the present invention described in the claims. The present invention may be modified and changed in various ways, etc., which will also be included within the scope of the present invention.

Claims

A power supply unit which maintains a constant power charging state of each of the plurality of energy storage devices connected to each other, and supplies power to a battery of the electric vehicle;

A charging unit connected to the power supply unit and having a plurality of ports arranged in parallel;

An input unit configured to receive a charging method and a charging start time of the charging unit;

A display unit displaying a charging state and a charge amount of a battery of the electric vehicle charged through the charging unit; And

And a control unit connected to the charging unit and controlling a supply of power.

The power supply unit,

A plurality of energy storage devices for generating and storing electric power by renewable energy generation including solar power generation and wind power generation;

When the remaining power amount of each of the plurality of energy storage devices is compared with a predetermined reference power amount, when the remaining power amount of at least one of the plurality of energy storage devices is less than or equal to the reference power amount, the remaining power amount among the plurality of energy storage devices is the most. An energy operating server controlling the large energy storage device to supply power to the energy storage device which is less than or equal to the reference power amount,

Each of the plurality of energy storage devices,

A power generator including a solar generator and a wind generator,

A power storage unit for storing power generated by the power generation unit;

Comprising a power management unit for generating the remaining power amount data by calculating the remaining amount of power stored in the power storage unit,

The energy operation server,

An energy level comparison module that receives the remaining power amount data from the power management unit, compares the predetermined reference power amount, and sequentially arranges the remaining power amount from the largest to the smallest, or from the smaller remaining power to the largest;

And an energy level control module configured to generate a charging message instructing to supply power from one energy storage device of the plurality of energy storage devices to another energy storage device by using the result data of the energy level comparison module.

The energy level control module,

An electric vehicle charging system according to claim 1, wherein the energy storage device having the nth largest remaining power generates a charge message to supply power to the energy storage device having the lowest remaining power amount.
The method according to claim 1,

The wind generator is an electric vehicle charging system, characterized in that using a vertical axis wind turbine.
The method according to claim 1 or 2,

The energy storage device is an electric vehicle charging system, characterized in that the container-type house or container-type smart farm with a solar generator and a wind generator installed on the outside.