KR102599312B1 - Charging socket of electric vehicle and method for charging electric vehicle using the same - Google Patents

Abstract

The present invention relates to an electric vehicle charging outlet that supports charging multiple electric vehicles and a method of charging an electric vehicle using the same. The present invention relates to an electric vehicle charging port provided in an electric vehicle, comprising: a power receiving port having a receiving terminal group for receiving power for charging the electric vehicle; and a power supply charging port that is electrically connectable to the receiving terminal group and includes a supply terminal group that supplies power delivered to the receiving terminal group to the outside of the electric vehicle. Provides a device and a method of charging an electric vehicle using it.

Description

Electric vehicle charging port and method of charging an electric vehicle using the same {CHARGING SOCKET OF ELECTRIC VEHICLE AND METHOD FOR CHARGING ELECTRIC VEHICLE USING THE SAME}

The present invention relates to an electric vehicle charging port and an electric vehicle charging method using the same. More specifically, the present invention relates to an electric vehicle charging outlet that supports charging a plurality of electric vehicles and a method of charging an electric vehicle using the same.

Interest in electric vehicles is increasing to comply with international regulations on greenhouse gas emissions and reduce fossil fuel use. In addition, the number of charging facilities for charging electric vehicles is increasing. Electric Vehicle Supply Equipment (EVSE): A fast charging system that supplies direct current high voltage directly to the electric vehicle battery, and a slow charging system that supplies alternating current power to the electric vehicle and applies direct current voltage to the battery through the vehicle's OBC (On Board Charger). There is a charging method.

In the case of wired charging rather than wireless charging, it is necessary to connect the charger to the vehicle to charge an electric vehicle. The charging port that connects the electric vehicle charger to the electric vehicle is provided in various forms such as AC charging, DC charging, slow charging, and fast charging. Additionally, chargers may be provided in different types depending on the country.

Although the number of electric vehicles has recently increased, there are insufficient charging facilities, and there are concerns that the shortage of charging facilities compared to electric vehicles will continue in the future.

For example, in the case where the living environment is an apartment complex, charging facilities are insufficient compared to electric vehicles in older apartments, including recently built apartments. In the case of slow and slow charging, the driver usually parks the vehicle in the parking lot and then charges it. If you want to charge at slow/low speed in an apartment parking lot, use a chargeable mobile/chargeable outlet type charger, park the vehicle near the charger, and then proceed with charging. However, when there are more electric vehicles than the number of chargers installed, or when it is difficult to connect the charger from the charger to the electric car parked on the parking lot, a problem occurs in which the vehicle cannot be charged. In particular, in situations where the vehicle occupying the charger is not moved immediately after charging, such as in an apartment (usually, the vehicle is charged at night and then moved in the morning), there is a problem in which the vehicle cannot be charged.

Public Patent No. 10-2021-0128171 (published on October 26, 2021)

In order to solve the above problems, the purpose of the present invention is to provide an electric vehicle charging outlet that enables charging of multiple vehicles by transferring power from an electric vehicle charger to other vehicles, and an electric vehicle charging method using the same.

The present invention relates to an electric vehicle charging port provided in an electric vehicle, comprising: a power receiving port having a receiving terminal group for receiving power for charging the electric vehicle; and a power supply charging port that is electrically connectable to the receiving terminal group and includes a supply terminal group that supplies power delivered to the receiving terminal group to the outside of the electric vehicle. Provides a phrase.

In one embodiment, the receiving terminal group and the supply terminal group may each include a DC terminal for supplying DC power or an AC terminal for supplying AC power.

Additionally, the receiving terminal group and the supply terminal group may each further include at least one of a proximity detection terminal and a control pilot terminal.

In one embodiment, the electric vehicle charging port further includes a control switch that electrically connects the receiving terminal group and the supply terminal group.

The control switch may selectively connect the receiving terminal group to any one of a charging line connected to the interior of the electric vehicle and a connection line connected to the supply terminal group.

Additionally, the control switch may be provided to selectively connect two of the receiving terminal group, a charging line connected to the inside of the electric vehicle, and the supply terminal group.

In addition, the present invention provides a method of charging an electric vehicle using the electric vehicle charging port, comprising: a charging start step of receiving power through the charging port for receiving power and starting charging the electric vehicle; and when charging of the battery of the electric vehicle is completed, switching the power supplied to the charging port for power reception to be transmitted to the charging port for power supply.

In one embodiment, the switching step is performed by the charging port switch control unit of the electric vehicle controlling a control switch provided in the electric vehicle charging port so that the receiving terminal group is electrically connected to the supply terminal group. It can be.

In one embodiment, the control switch is configured to selectively connect the receiving terminal group to one of a charging line connected to the interior of the electric vehicle and a connection line connected to the supply terminal group. can be controlled by

In one embodiment, the control switch may be controlled by the charging port switch control unit to selectively connect two of the receiving terminal group, the charging line connected to the inside of the electric vehicle, and the supply terminal group. .

Additionally, the control switch may be controlled to disconnect the receiving terminal group and the supply terminal group when the connector is removed from the power receiving charging port or when the electric vehicle is started.

According to the present invention, it is possible to charge a plurality of electric vehicles by connecting the charging cable of another vehicle to an electric vehicle that is directly or indirectly connected to an electric vehicle charger.

In particular, it has the advantage of being able to efficiently charge electric vehicles in environments where electric vehicle charging facilities are lacking or where direct connection of a charging cable to an electric vehicle charger is difficult.

Figure 1 is a diagram illustrating a situation in which an electric vehicle is charged using an electric vehicle charging port according to an embodiment of the present invention.
Figure 2 is a diagram showing the external appearance of an electric vehicle charging port according to an embodiment of the present invention.
Figure 3 is a diagram showing the circuit configuration of an electric vehicle charging port according to an embodiment of the present invention.
Figure 4 is a block diagram showing the internal configuration for charging an electric vehicle using an electric vehicle charging port according to an embodiment of the present invention.
Figure 5 is a flowchart showing a method of charging an electric vehicle using an electric vehicle charging port according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. First, when adding reference signs to components in each drawing, it should be noted that the same components are given the same reference numerals as much as possible even if they are shown in different drawings. Additionally, in describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description will be omitted. In addition, preferred embodiments of the present invention will be described below, but the technical idea of the present invention is not limited or restricted thereto, and of course, it can be modified and implemented in various ways by those skilled in the art.

Figure 1 is a diagram illustrating a situation in which an electric vehicle is charged using an electric vehicle charging port according to an embodiment of the present invention.

The electric vehicle 10 according to an embodiment of the present invention includes an electric vehicle charging port 20, and the electric vehicle charging port 20 is configured to receive charging power while supplying charging power to other vehicles. In FIG. 1, the first electric vehicle 10a may receive power from the electric vehicle charger 1 through the first cable 2a, and may supply power to the second electric vehicle 10b through the second cable 2b. .

The electric vehicle charging port 20 is configured to connect the first connector 4 of the first cable 2a and the second connector 6 of the second cable 2b. Accordingly, the power supplied through the first connector 4 of the first cable 2a is connected to the first connector 10b of the second electric vehicle 10b through the second connector 6 of the second cable 2b. It can be supplied to the second electric vehicle 10b through 4).

In Figure 1, two electric vehicles 10 are shown connected, but with another electric vehicle parked next to the second electric vehicle 10b, charging can be done by connecting the cable 2 to the second electric vehicle 10b. .

In the present invention, when charging of the first electric vehicle (10a) directly connected to the electric vehicle charger (1) is completed, the electric vehicle charging port (20) is provided so that power from the electric vehicle charger (1) is supplied to the second electric vehicle (10b). It is controlled. If another electric vehicle is additionally connected to the second electric vehicle 10b, power may be sequentially supplied to the other electric vehicle after charging of the second electric vehicle 10b is completed.

Figure 2 is a diagram showing the external appearance of an electric vehicle charging port according to an embodiment of the present invention, and Figure 3 is a diagram showing a circuit configuration of an electric vehicle charging port according to an embodiment of the present invention.

The electric vehicle charging port 20 includes a charging port 30 for receiving power and a charging port 40 for supplying power. The first connector 4 of the first cable 2a that supplies power is connected to the charging port 30 for receiving power, so that power can be supplied to the electric vehicle 10. The second connector 4 of the second cable 2b is connected to the power supply charging port 40, and the power supplied to the first connector 4 coupled to the power receiving charging port 30 is connected to the second cable. (2b) can be supplied.

In Figure 2, the charging port 30 for receiving power and the charging port 40 for power supply are shown as being adjacent to each other. However, in the practice of the present invention, the charging port 30 for receiving power and the charging port 40 for supplying power are It may also be possible to be spatially spaced apart and provided in the electric vehicle 10.

The charging port 30 for receiving power shown in FIG. 2 is shown as a DC combo type (Type 1) that can receive both DC power and AC power. However, this is an example, and the idea of the present invention can be modified and implemented to suit various charging port types, such as 5-pin AC single phase, 7-pin AC 3-phase, DC combo (Type 2), and CHAdeMO. .

Referring to Figures 2 and 3, the charging port 30 for receiving power includes a DC terminal (31, 32), an AC terminal (33, 34), a ground terminal (35), and a proximity detection terminal (36). , may include a control pilot terminal 37. In this specification, these terminals provided in the charging port 30 for receiving power may be referred to as a receiving terminal group. The receiving terminal group includes at least terminals supplied with DC power or AC power.

The charging port 40 for power supply includes DC terminals 41, 42, AC terminals 43, 44, ground terminal 45, proximity detection terminal 46, and control pilot terminal ( 47) may be included. In this specification, these terminals provided in the charging port 40 for power supply may be referred to as a supply terminal group. The supply terminal group includes terminals for supplying at least DC power or AC power.

Each terminal of the receiving terminal groups 31 to 37 may be connected to each of the plurality of charging lines 11 connected inside the electric vehicle 10. Additionally, each terminal of the receiving terminal group 31 to 37 may be connected to each terminal of the supply terminal group 41 to 47 of the power supply charging port 40 through connection lines L1 to L7. A plurality of control switches (SW1 to SW7) are provided to selectively connect the receiving terminal groups (31 to 37) to the charging line (11) and the connection lines (L1 to L7).

When a plurality of control switches (SW1 to SW7) connect the receiving terminal groups (31 to 37) and the charging line (11), the power supplied to the charging port (30) for receiving power is transmitted to the inside of the electric vehicle (10). Thus, the battery of the electric vehicle 10 is charged.

When a plurality of control switches (SW1 to SW7) connect the receiving terminal groups (31 to 37) and the connection lines (L1 to L7), the power supplied to the power receiving charging port (30) is transmitted to the power supply charging port (30). It is transmitted to (40), allowing power to be supplied to other electric vehicles.

Figure 4 is a block diagram showing the internal configuration for charging an electric vehicle using an electric vehicle charging port according to an embodiment of the present invention.

The electric vehicle 10 includes a battery 16, a charging circuit unit 14 including circuits such as an OBC (On board charger) or a DC/DC converter that supplies charging power to the battery 16, and charging and discharging of the battery 16. It includes a battery management system (BMS) that controls, and further includes a charging port switch control unit 18 that controls the control switches (SW1 to SW7) shown in FIG. 3.

The charging port switch control unit 18 controls the operation of the control switches SW1 to SW7.

In one embodiment, the charging port switch control unit 18 may maintain the control switches SW1 to SW7 connecting the receiving terminal groups 31 to 37 and the charging line 11 by default. When the charging of the battery 16 is completed, the charging port switch control unit 18 can control the control switches (SW1 to SW7) to connect the receiving terminal groups (31 to 37) and the connection lines (L1 to L7). . In one embodiment, the state in which the control switches (SW1 to SW7) connect the receiving terminal groups (31 to 37) and the connection lines (L1 to L7) is when charging of the electric vehicle 10 is completed and the ignition is turned off. It can be maintained only in a stopped state.

In one embodiment, the charging port switch control unit 18 maintains the control switches (SW1 to SW7) in a neutral state, and when the connector for charging is coupled to the charging port 30 for receiving power, the control switch (SW1) ~SW7) can be controlled to connect the receiving terminal group (31 to 37) and the charging line (11).

In addition, in one embodiment, when another connector is coupled to the charging port 40 for power supply, the charging port switch control unit 18 controls the control switches SW1 to SW7 to connect the receiving terminal groups 31 to 37. It can be controlled to connect the and connection lines (L1 to L7). In addition, when the connector connected to the charging port 30 for receiving power is disconnected or when the electric vehicle 10 is started, the control switches (SW1 to SW7) are connected to the receiving terminal groups (31 to 37) and the connection line (L1). ~L7) can be disconnected and returned to a neutral state or a state in which the receiving terminal group (31 to 37) and the charging line (11) are connected.

Figure 5 is a flowchart showing a method of charging an electric vehicle using an electric vehicle charging port according to an embodiment of the present invention.

A connector is connected to the charging port 30 for receiving power of the electric vehicle 10 to start charging the electric vehicle 10 (S100). At the start of charging, the control switches (SW1 to SW7) connect the receiving terminal groups (31 to 37) and the charging line (11). In one embodiment, the control switches (SW1 to SW7) may be on standby with the receiving terminal groups (31 to 37) and the charging line (11) connected. In another embodiment, the control switches (SW1 to SW7) control when the connector is connected to the charging port 30 for receiving power without connecting the receiving terminal groups 31 to 37 and the charging line 11. The switches SW1 to SW7 may be controlled by the charging port switch control unit 18 to connect the receiving terminal groups 31 to 37 and the charging line 11. In one embodiment, it may be possible for the charging port 30 for receiving power to be equipped with a separate sensor, such as a limit switch, to detect the connection of the connector.

It is confirmed whether charging of the electric vehicle 10 has been completed (S110).

When charging of the electric vehicle 10 is completed, the charging port switch control unit 18 switches the control switches SW1 to SW7 so that power is supplied to the charging port 40 for power supply (S120). A plurality of control switches (SW1 to SW7) are controlled to connect the receiving terminal groups (31 to 37) and the connection lines (L1 to L7), so that the supply terminal groups (41 to 47) of the power supply charging port (40) are controlled. ) is connected to the receiving terminal group (31 to 37). Accordingly, the electric vehicle charger 1 can be connected to other electric vehicles through the receiving terminal groups 31 to 37 and the supply terminal groups 41 to 47 to charge the other electric vehicles.

Meanwhile, in the above description, the control switches (SW1 to SW7) were explained as selectively connecting the receiving terminal groups (31 to 37) with the charging line (11) and the connection lines (L1 to L7). However, in the practice of the present invention, the control switches (SW1 to SW7) are configured to selectively connect two of the receiving terminal groups (31 to 37), the charging line (11) and the connection lines (L1 to L7). It may also be possible. That is, the control switches (SW1 to SW7) may be provided to connect the charging line 11 and the connection lines (L1 to L7). Through this, the electric vehicle charging port presented in the present invention can be used for vehicle-to-vehicle charging.

According to the present invention, it becomes possible to sequentially charge a plurality of electric vehicles with one charger.

The above description is merely an illustrative explanation of the technical idea of the present invention, and various modifications, changes, and substitutions can be made by those skilled in the art without departing from the essential characteristics of the present invention. will be. Accordingly, the embodiments disclosed in the present invention and the attached drawings are not intended to limit the technical idea of the present invention, but are for illustrative purposes, and the scope of the technical idea of the present invention is not limited by these embodiments and the attached drawings. . The scope of protection of the present invention should be interpreted in accordance with the claims below, and all technical ideas within the equivalent scope should be construed as being included in the scope of rights of the present invention.

1: Electric vehicle charger
10: electric car
20: Electric vehicle charging port
30: Charging port for receiving power
40: Charging port for power supply

Claims (11)

In the electric vehicle charging port provided in the electric vehicle,
a power receiving charging port including a receiving terminal group for receiving power for charging the electric vehicle; and
It includes a power supply charging port that is electrically connectable to the receiving terminal group and includes a supply terminal group that supplies power delivered to the receiving terminal group to the outside of the electric vehicle,
Further comprising a control switch electrically connecting the receiving terminal group and the supply terminal group,
The control switch selectively connects the receiving terminal group to one of a charging line connected to the interior of the electric vehicle and a connection line connected to the supply terminal group,
The control switch is configured to operate the receiving terminal group and the supply terminal group when the connector is removed from the charging port for receiving power or when the electric vehicle is started while the receiving terminal group and the supply terminal group are electrically connected to each other. An electric vehicle charging port, characterized in that the supply terminal group is disconnected. According to claim 1,
The electric vehicle charging port, wherein the receiving terminal group and the supply terminal group each include a DC terminal for supplying DC power or an AC terminal for supplying AC power. According to claim 2,
The receiving terminal group and the supply terminal group each further include at least one of a proximity detection terminal and a control pilot terminal. delete delete delete In the electric vehicle charging method using the electric vehicle charging port according to claim 1,
A charging start step of receiving power through the power receiving charging port and starting charging the electric vehicle; and
When charging of the battery of the electric vehicle is completed, switching the power supplied to the charging port for power reception to be transmitted to the charging port for power supply;
An electric vehicle charging method including. According to claim 7,
The switching step is characterized in that the charging port switch control unit of the electric vehicle controls the control switch provided in the electric vehicle charging port so that the receiving terminal group is electrically connected to the supply terminal group. How to charge an electric vehicle. delete delete delete

Images