WO2017126747A1

WO2017126747A1 - Electric vehicle charging system

Info

Publication number: WO2017126747A1
Application number: PCT/KR2016/004882
Authority: WO
Inventors: 김지효; 김주현; 손병일; 김영훈; 박남규; 장순섭; 이복수
Original assignee: 옴니시스템주식회사
Priority date: 2016-01-21
Filing date: 2016-05-10
Publication date: 2017-07-27
Also published as: KR101759246B1

Abstract

The present invention relates to an electric vehicle charging system which comprises a plurality of ports in a charging part in order to charge a plurality of electric vehicles in a charging area installed at a parking lot. The plurality of ports comprise one from among a high speed charging unit, a low speed charging unit, and a combined unit for low and high speed charging, and can be converted to high speed or low speed charging, or be converted to low speed charging after high speed charging according to a user's selection. The present invention sequentially provides optimal charging so that charging can be performed efficiently during the time the electric vehicles are parked, and enables the charging time to be confirmed in advance so that the waiting time for charging can be effectively utilized.

Description

Electric Vehicle Charging System

The present invention relates to an electric vehicle charging system, to provide a charging unit having a plurality of ports from one power source in order to charge a plurality of electric vehicles in the parking lot, according to the request of the owner of the electric vehicle to perform fast charging or low speed charging, Fast charging and low-speed charging is switched in one charging unit can be charged more efficiently, and further relates to an electric vehicle charging system that charges the charge using the registration information of the electric vehicle.

The use of petroleum, a raw material for automobiles, increases carbon dioxide emissions. As a result, global warming phenomenon is sustained and abnormal climate phenomenon occurs. And many researches on the production technology has been made.

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.

Such an electric vehicle or 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 should supply electricity to the internal charger in place of petroleum raw materials. In general, the electric vehicle charges the battery inside the electric vehicle by a general charging system while parked.

There are several problems to commercialize and activate the developed electric vehicle. One of the most discussed problems is that such charging facilities are still inadequate.

The distance that can be reached with a single charge has been greatly improved, reaching 400 km. However, since there are not many facilities that can be charged like a gas station of a conventional car, charging in the home requires a direct connection between an outlet and an electric car, which is possible for a single-family resident, The problem is that people living in homes cannot do this.

In this regard, the vehicle charging system of Korean Patent Application Publication No. 10-2013-0050003 allows the charging to be appropriately made in response to the fact that the charging unit is located at various positions for each vehicle, and does not occupy a large space in the parking lot of the assembly building. It is disclosed that it is installed so that. However, the present invention has a problem in that it is inconvenient to charge a plurality of vehicles in charging the electric vehicle in the apartment house.

Therefore, it is required to develop a charging system of an electric vehicle that can conveniently charge a plurality of vehicles in an assembly building such as a multi-unit house and select a charging method and speed according to a user's situation.

An object of the present invention is to provide an electric vehicle charging system that can be installed in a parking lot and can charge a plurality of electric vehicles from one power source.

An object of the present invention can be charged at a high speed or a low speed for a plurality of electric vehicles parked in a parking lot, and further, by charging a predetermined ratio in the fast charging and then switching to low speed charging, thereby efficiently charging the electric vehicle charging time. It is to provide an electric vehicle charging system that can be distributed.

An object of the present invention is to provide an electric vehicle charging system capable of automatically calculating the charging fee of the electric vehicle to charge in a predetermined manner.

In order to achieve the above object, the electric vehicle charging system according to an embodiment of the present invention includes a power supply unit, charging unit, input unit, display unit, control unit. The power supply unit is installed in the parking lot of the apartment house and supplies power to the battery of the electric vehicle. The charging unit is connected to the power supply unit and has a plurality of ports arranged in parallel. The input unit receives a charging method and a charging start time of the charging unit. The display unit displays the state of charge and the amount of charge of the battery of the electric vehicle charged through the charging unit. The control unit is installed in the cable of the charging unit to control the supply of power.

In the electric vehicle charging system according to another embodiment of the present invention, the plurality of ports of the charging unit includes a high speed charging unit or a low speed charging unit, respectively. The high speed charging unit applies a DC voltage of 100V or more and 450V or less to the battery of the electric vehicle, and the low speed charging unit applies an AC voltage of 220V to the battery of the electric vehicle.

In the electric vehicle charging system according to another embodiment of the present invention, the plurality of ports of the charging unit applies a high-speed charging unit for applying a DC voltage of 100 V or more and 450 V or less to the battery of the electric vehicle, and an AC voltage of 220 V to the battery of the electric vehicle. A low speed charging unit and a switching unit for switching the charging method. When the 70% of the capacity of the battery of the electric vehicle is charged by the fast charging unit, the switching unit may switch the charging method such that the remaining amount is charged by the low speed charging unit.

The electric vehicle charging system according to another embodiment of the present invention may further include a vehicle identification unit and a charge calculation unit. The vehicle identification unit checks whether the vehicle is registered for the vehicle located in the charging area. The fee calculator calculates a fee based on a charging method and a charging amount. When the vehicle located in the charging area is a registered vehicle, the calculated fee may be transmitted to the portable terminal of the registered vehicle owner and charged by a predetermined payment method. When the vehicle located in the charging area is an unregistered vehicle, the mobile terminal information and payment method of the unregistered vehicle owner may be input, and the calculated fee may be transmitted to the portable terminal of the unregistered vehicle owner and charged to the input payment means.

In the electric vehicle charging system according to another exemplary embodiment of the present disclosure, when a plurality of vehicles are connected to ports of the charging unit, the charging unit may sequentially charge the respective vehicles according to the charging start time. The display unit may transmit a charging amount, a charging waiting time, and an expected charging completion time to a portable terminal of a registered vehicle owner or a portable terminal of an unregistered vehicle owner.

When a plurality of electric vehicles are connected to the charging unit in the electric vehicle charging system according to another embodiment of the present invention, the controller may calculate the charging order for the plurality of electric vehicles based on the plurality of charging start times input to the input unit. have.

The electric vehicle charging system according to the present invention does not need to install a plurality of power sources by connecting a plurality of charging ports from one power source, and provides a switching function of low speed charging after high speed charging, low speed charging or high speed charging according to the owner's needs. Therefore, the owner can charge the electric vehicle more efficiently, and further confirm the completion time of the charging in advance, so that the charging space can be efficiently used, and the charging fee can be automatically charged.

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

2 is a view showing a charging unit of the electric vehicle charging system according to an embodiment of the present invention.

3 is a view showing a vehicle identification unit in the electric vehicle charging system according to an embodiment of the present invention.

In order to fully understand the present invention, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Embodiment of the present invention may be modified in various forms, the scope of the invention should not be construed as limited to the embodiments described in detail below. This embodiment is provided to more completely explain the present invention to those skilled in the art. Therefore, the shape of the elements in the drawings and the like may be exaggerated to emphasize a more clear description. It should be noted that the same members in each drawing are sometimes shown with the same reference numerals. In addition, detailed descriptions of well-known functions and configurations that are determined to unnecessarily obscure the subject matter of the present invention are omitted.

1 is a block diagram showing an electric vehicle charging system according to an embodiment of the present invention, Figure 2 is a view showing a charging unit of the electric vehicle charging system according to an embodiment of the present invention.

As shown in FIG. 1, an electric vehicle charging system 1000 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. do.

The power supply unit 1100 is installed in the parking lot to supply power to the battery of the electric vehicle. The power supply unit may receive power from the outside, or may receive power from a photovoltaic power generation facility installed in an area including an apartment house, a power generation facility using an incineration facility, and the like. The external power source and the internal power source may be selected and used as needed, and the power source may be automatically selected so that the user is charged the lowest price when the fee charged for the type of power source is different depending on the time when the power is supplied.

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.

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. As shown in FIG. 2, the charging unit 1200 includes a plurality of ports arranged in parallel. Each of the plurality of ports is connected to the electric vehicle to conveniently charge the plurality of electric vehicles. Each of the plurality of ports may be located in a parking area of the electric vehicle.

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 high speed charging unit or the low speed charging unit may be arranged crosswise with respect to one row, but for convenience of design, only one high speed charging unit may be provided in one row and only the low speed charging unit may be provided in the other row.

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 an AC voltage of 220V to the battery of the electric vehicle. The low speed charging unit receives a voltage supplied from the power supply unit 1100, for example, a voltage of 220V of an AC single phase, converts the voltage into a voltage capable of low speed charging, for example, an AC single phase voltage of 220V, and charges the electric vehicle. Normal charging time is 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 be charged through the input unit 1300, the low speed charging unit generates power of AC 220V. 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 present invention charges a plurality of electric vehicles using a plurality of ports, and the cars connected to the plurality of ports are sequentially charged. Here, the order of charging may be scheduled according to a first-come or first-served order. The input unit 1300 receives a fast charging method and a low speed charging method according to a user's selection. If a user needs to charge an electric vehicle in a hurry, it can be charged using a fast charging method. If a user can park a long time while charging slowly, the user can charge a slow charging method.

The charging start time means a time at which the charging unit 1200 starts charging the electric vehicle. While there may be no other car in the parking and charging area of an electric car, many cars will be parked in a multi-unit house. If the charging start time is set to 'immediately', charging can begin immediately after connecting the electric vehicle to the port. Here, when the other electric vehicle is currently being charged, it may be started immediately after the charging of the other electric vehicle is completed.

In another embodiment, the user can optionally set the charging start time. For example, a user may select a late night time zone that is relatively inexpensive to charge. When several users set the same or similar time zones, the charging start time may be sequentially distributed according to the input order.

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.

In the above embodiment, the fast charging unit and the low speed charging unit are provided in separate rows or provided in different ports, but in another embodiment, the fast charging unit, the low speed charging unit, and the switching unit are provided for one port. The slow charge can be switched. Such a charging unit may be referred to as a low speed combined charging unit.

The switching unit may be designed to not only select a charging method as a fast charging method or a slow charging method for one port, but also to switch to a slow charging method after charging a predetermined ratio by the fast charging method. For example, up to 70% of the battery capacity may be charged by fast charging, while the remaining capacity may be converted to slow charging. Continued high-speed charging to charge the battery of the electric vehicle may affect the life of the battery, and after the high-speed charging at a certain ratio, the remaining ratio can be protected by low-speed charging, preferably the battery 70% of the charge can be charged at high speed and the remaining 30% at low speed. When the user selects the optimum charging, the low-speed dual-purpose charging unit can charge the remaining amount at low speed after the high-speed charging of 70%.

In the port of the charging unit 1200, according to the arrangement of the fast charging unit, the low speed charging unit, the low speed charging unit, the charging zone is a high speed charging area for high speed charging or a low speed charging area for low speed charging, high speed charging and low speed The charging can be divided into a compatible charging area capable of both.

In the present invention, the electric vehicle charging system may be installed in a parking lot such as a multi-family house, as well as a multi-family house, may be installed in a parking lot of an assembly building, a highway rest area, and the like. In addition, the electric vehicle charging system of the present invention is not limited to being applied only to a parking lot, and may be applied to a place where charging of an electric vehicle such as an automobile charging station is required.

Next, a configuration that charges for the amount of charged power will be described. For example, when the present invention is applied to a multi-family house, a fee is charged.

There are many residents and visitors in multi-family homes, so the management office registers the vehicle number of residents who live in the multi-family housing primarily and manages the vehicle number by entering the vehicle number. do.

In particular, the vehicle number, vehicle information, household information, etc. can be registered in the management office as identification data of the electric vehicle in order to charge and charge the electric vehicle. Based on the registered information, the management office may charge the electric vehicle charging fee to the management fee of the household. If you do not want to add to the management fee, the management office may receive additional account information and card information and settle the payment method set by the user.

As shown in FIG. 3, in order to charge for charging the electric vehicle, the electric vehicle charging system 1000 according to an exemplary embodiment of the present invention further includes a vehicle checking unit 1600 and a fare calculating unit 1700. Include.

The vehicle identification unit 1600 checks whether the electric vehicle is registered with respect to the electric vehicle located in the charging zone. The registered electric vehicle may be a vehicle of a multi-family dweller or a user who is not a resident but has a job in a multi-family house. The vehicle identification unit 1600 may include a scan unit 1610 and an image processor 1620. The scan unit 1610 scans the license plate of the vehicle and transmits it to the image processor 1620 to confirm accurate vehicle information. The image processor 1620 reads the vehicle number from the scanned image.

When the read-out vehicle number is a vehicle registered in the management office, the charging information of the vehicle is transmitted to the management office server and mapped and stored with the household information. The charging information of the vehicle may be a charging zone, a charging time, a charging amount, a calculated fee, and the like. In addition, the charging information of the vehicle is transmitted to the user's portable terminal so that the user can check the details. The user may allow the charging fee to be added to the management fee, or may be settled by various methods such as account transfer, card, and payment using a mobile terminal.

If the read out vehicle number is a vehicle that is not registered in the management office, the display unit 1400 indicates that the vehicle is not registered in the corresponding apartment house, and requires the input of a charging means. The read-out vehicle number is mapped with charging information of the vehicle, such as a charging means, a charging method, a charging amount, and a portable terminal number input by the user. The charging information of the vehicle may be transmitted to the portable terminal of the user. The user may pay the charging fee by various methods such as bank transfer, card, payment using a mobile terminal.

Next, the configuration of the charging sequence when a plurality of vehicles are waiting for charging will be described. When a plurality of vehicles are connected to the port of the charging unit in the charging zone, the charging unit sequentially charges according to the charging start time input for each vehicle. The input charging time refers to the charging start time selected by the user, and may be selected by selecting 'immediately' or a desired time zone.

When the user selects 'immediately' charging, if there is no other user, the charging unit may immediately start charging the vehicle. In this case, the charging method may be charged by a user selected method such as fast charging, slow charging, or slow charging after fast charging. When the user selects 'immediately' charging, if another user is charging the electric vehicle, the charging unit may start charging the vehicle after the charging of the vehicle currently being charged.

The user can optionally set the charging start time. For example, a user may select a late night time zone that is relatively inexpensive to charge. When several users set the same or similar time zones, the charging start time may be sequentially distributed according to the input order.

Here, when the scheduled charging time and the 'immediately' charging time overlap, the charging of the reserved charging vehicle may be prioritized, and in this case, the user who selects the 'immediately' charging may inform the estimated charging start time. In addition, as the vehicle in which the fast charging is completed is switched to the slow charging, the fast charging of the next-order fast charging reservation vehicle may be started.

The controller 1500 schedules a charging time for the plurality of electric vehicles according to the input charging start time and the charging method, and controls the supply of power according to the adjusted schedule. The charging unit 1200 sequentially charges a plurality of vehicles according to a charging schedule of the electric vehicle. The display unit 1400 may transmit a charging amount, a charging waiting time, and an expected charging completion time for each vehicle to a portable terminal of a registered vehicle owner or a portable terminal of an unregistered vehicle owner.

In another embodiment, charging priority may be given when the order of use conflicts. For example, the fast charging may be set to be prioritized or the registered vehicle may be set to be prioritized, but is not limited thereto.

EXAMPLE

The electric vehicle charging system according to the present invention can be implemented as follows.

The management office of MDUs is usually registered with the vehicle number, household information, etc. of the owners who live in MDUs to manage parking and access to MDUs.

In the parking lot of the apartment house, there is a charging area designated as a certain area for charging the electric vehicle.The charging area is a high-speed charging area for high-speed charging, a low-speed charging area for low-speed charging, and a combined charging area for both high-speed charging and low-speed charging. Are distinguished.

When the owner needs to charge the electric vehicle, the owner may park the vehicle in one of the fast charging station, the low speed charging zone, or the combined charging zone according to whether the electric vehicle is charged at a high speed or a low speed. When the electric vehicle parks, the vehicle identification unit 1600 checks the vehicle number of the electric vehicle and compares it with the registered vehicle number to determine whether the vehicle is a registered vehicle.

In the case of a registered vehicle, when the owner connects the port of the charging unit to an inlet connected to the battery of the electric vehicle, the display unit 1400 displays the current remaining battery capacity, and the user desires the charging method, the charging start time, the charging amount, and the like. Enter. In the combined charging area, the charging method of the low speed charging after the fast charging, the low speed charging or the fast charging can be selected.

When a plurality of vehicles are connected to the charging unit, the charging unit sequentially charges each vehicle according to the charging start time. The display unit displays the charging capacity, the charging time, the estimated time required, and transmits the charging amount, the charging waiting time, and the expected charging completion time to the portable terminal of the registered or unregistered vehicle owner.

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

The fee calculator calculates a fee based on the charging method and the amount of charge and transmits the fee to the portable terminal of the vehicle owner. Charged fees may be charged in addition to the household's electricity usage or other administrative costs for registered vehicles.

When the charging is completed, the control unit cuts off the power supply to the completed vehicle, and controls to charge the next electric vehicle waiting.

On the other hand, the embodiments of the present invention disclosed in the specification and drawings are merely presented specific examples to easily explain the technical contents and help the understanding of the present invention, and are not intended to limit the scope of the present invention. It will be apparent to those skilled in the art that other modifications based on the technical idea of the present invention can be carried out in addition to the embodiments disclosed herein.

[Description of the code]

1000: electric vehicle charging system 1100: power supply

1200 charging unit 1300 input unit

1400: display unit 1500: control unit

1600: vehicle identification unit 1700: fare calculation unit

Claims

A power supply unit supplying power 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

And a control unit connected to the charging unit and controlling a supply of electric power.
The method of claim 1,

Each of the plurality of ports of the charging unit

An electric vehicle charging system comprising one of a high-speed charging unit for applying a DC voltage of 400V or more and 450V or less to a battery of an electric vehicle, and a low-speed charging unit for applying an AC voltage of 220V to the battery of the electric vehicle.
The method of claim 1,

The plurality of ports of the charging unit

A high speed charging unit for applying a DC voltage of 100V or more and 450V or less to a battery of an electric vehicle, a low speed charging unit for applying an AC voltage of 220V to a battery of an electric vehicle, and a switching unit for switching a charging method,

When the switching unit is charged by 70% of the capacity of the battery of the electric vehicle by the high speed charging unit, the electric vehicle charging system, characterized in that for switching the charging method so that the remaining charge is charged by the low speed charging unit.
The method of claim 1,

Vehicle identification unit for checking whether or not the registered electric vehicle for the electric vehicle located in the charging area; And

And a charge calculator configured to calculate a charge based on the charging method and the charge amount.

When the vehicle located in the charging zone is a registered vehicle, the display unit transmits the calculated fee to the portable terminal of the registered vehicle owner, charges with a preset payment method,

When the vehicle located in the charging zone is an unregistered vehicle, the input unit receives the portable terminal information and payment means of the unregistered vehicle owner, and the controller transmits the calculated fee to the portable terminal of the unregistered vehicle owner. And charging with the input payment means.
The method of claim 4, wherein

When a plurality of vehicles are connected to the port of the charging unit,

The charging unit sequentially charges each vehicle according to the charging start time,

And the display unit transmits a charging amount, a charging waiting time, and an expected charging completion time to a portable terminal of the registered vehicle owner or a portable terminal of the unregistered vehicle owner.
The method of claim 1,

When a plurality of electric vehicles are connected to the charging unit,

The control unit calculates a charging order for the plurality of electric vehicles on the basis of a plurality of charging start time input to the input unit.