KR20190012328A - Charger and charging method for electric vehicle - Google Patents

Abstract

The present invention relates to a charger of an electric transport device and a charging method using the same. The charger comprises: a main body forming appearance; a coin slot on one surface of the main body, into which a coin is inserted; a bill slot arranged on one side of the coin slot, into which a bill is inserted; a display unit which is arranged on an upper side of a front surface of the main body, and displays an amount of the money inserted through the coin slot or the bill slot, or a balance; a card reader unit arranged on one side of the coin slot to read a radio frequency identification card (RFID); and one or more connectors connected to an electric transport device to charge a power supply unit of the electric transport device. The connectors include: a first connector to be connected to an electric motorcycle; and a second connector to be connected to a first electric vehicle. The first connector is a single-phase two-wire 220 V socket.

Description

{CHARGER AND CHARGING METHOD FOR ELECTRIC VEHICLE}

The present invention relates to a charger for an electric transport apparatus having a coin input port and a bill input port, and a charging method of the electric transport apparatus using the same.

Electricity transportation equipment includes electric vehicles and electric motorcycles, which are operated by electricity. The development and supply of electric transportation equipment is gradually spreading around the world due to the strengthening of global environmental regulations and energy saving trends. to be.

Electric vehicles can be broadly divided into battery-powered electric vehicles and hybrid electric vehicles. A pure electric vehicle is a vehicle that uses only electricity and is generally referred to as an electric vehicle, and a hybrid electric vehicle refers to driving using fossil fuel as well as electricity.

The electric transport apparatus is provided with a battery for supplying electricity for running. The battery of the electric transport apparatus is charged by the electric current supplied from the external power source and the electric motor is driven by the electric current charged in the battery of the electric transport apparatus. Accordingly, in order to widely distribute the electric transportation device, it is necessary to expand the charging station for charging the battery.

The conventional charger for the electric transport apparatus can not use coins or banknotes, and can be charged only at a specific place.

The present invention is directed to solving the above-mentioned problems and other problems. Another object is to provide an electric charger having a coin input port and a bill input port and a charging method.

According to an aspect of the present invention, there is provided a display apparatus comprising: a body forming an appearance; A coin input port into which a coin is inserted into one surface of the main body; A bill input port provided at one side of the coin input port and into which a bill is input; A display unit provided on a front side of the main body and displaying an amount or a balance charged through the coin input port or the bill input port; A card reader unit provided at one side of the coin input port and reading an RFID card (Radio Frequency Identification Card); And at least one connector connected to the electric transport device to charge the power supply of the electric transport device, the connector comprising: a first connector for connection with an electric motorcycle; And a second connector for connection with the first electric vehicle, wherein the first connector is a single-phase, two-wire 220V outlet.

According to an aspect of the present invention, a recessed portion formed to be recessed inward is formed on a front surface of the main body, and the bill input port, the coin input port, the first and second connectors are disposed in the recess portion And the bill input port, the coin input port, and the first and second connectors may protrude less than the front surface of the main body.

According to an aspect of the present invention, a charging cable for connecting to a second electric vehicle different from the first electric vehicle is provided on one side of the main body, and a third connector is formed at an end of the charging cable, 2 can be electrically connected to the power source of the electric vehicle.

According to an aspect of the present invention, an audio output unit is formed on the upper side of the recessed portion so that sound can be output to the outside.

According to an aspect of the present invention, at least one of the first connector and the second connector may be provided with a cap which can be opened and closed by a torsion spring.

According to an aspect of the present invention, the first connector is mounted on one side of the main body, and the second connector is formed in a shape corresponding to the outer shape of the third connector so that the third connector is inserted and fixed .

According to an aspect of the present invention, the mounting portion is formed to be recessed inwardly of the main body, and the mounting portion may be formed so that its depth becomes shallower as it approaches the front surface.

According to an aspect of the present invention, there is provided a method for charging a charger for an electric vehicle, the method comprising: (a) recognizing a usable payment means and a payment amount by inputting a coin or paper money into a charger for electric- (b) electrically connecting the electric transport device and the charger to transmit power information of the electric transport device to the control unit; (c) applying power to a power source of the electric transport apparatus based on the power information; (d) measuring an amount of power supplied to the electric transport apparatus through the electric power measuring unit; (e) continuing to detect the presence or absence of a remaining charge on the basis of the measured amount of power; And (f) blocking the power supply to the power supply unit when the balance is zero in step (e) or when the amount of power charged in the power supply unit of the electric transport apparatus exceeds a preset amount of power. Can be provided.

According to an aspect of the present invention, in the step (a), the step of recognizing the payment means and the payment amount may be performed by tagging an RFID card (Radio Frequency Identification Card) If there is a usable amount remaining when the power supply is interrupted, the remaining amount can be accumulated in the RFID card.

According to an aspect of the present invention, an amount of money already accumulated when the RFID card is in contact with the charger is displayed on the display unit, and a balance available in the display unit when the power supply unit of the electric transportation apparatus is charged is displayed in real time .

According to an aspect of the present invention, in the step (f), the method may further include calculating a charging charge based on the amount of electric power supplied to the electric transport apparatus, and charging the calculated charge charge.

Effects of the charger and the charging method of the electric transport apparatus according to the present invention will be described as follows.

According to at least one of the embodiments of the present invention, there is an advantage that electric power can be applied to the power source unit of the electric transport apparatus by various payment means such as coins and banknotes as well as the accumulation card.

According to at least one of the embodiments of the present invention, there is an advantage that an electric transport device such as an electric motorcycle or an electric bicycle charged by 220V can be charged in various places.

According to at least one of the embodiments of the present invention, there is an advantage that various electric transportation devices such as an electric car, an electric motorcycle, and an electric bicycle can be charged using one charger.

Further scope of applicability of the present invention will become apparent from the following detailed description. It should be understood, however, that the detailed description and specific examples, such as the preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art.

1 is a perspective view of a charger for an electric transport apparatus according to the present invention.
2 is a configuration diagram showing a charging system of an electric transport apparatus according to the present invention.
3 is a block diagram showing the configuration of a charger according to the present invention.
FIG. 4A is a side perspective view of a charger according to the present invention, and FIG. 4B is a perspective view of a mounting part related to the present invention. FIG.
5 is a perspective view of a charging gun in accordance with the present invention.
Fig. 6 is a flowchart for charging the electric transport apparatus according to the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like or similar components are denoted by the same reference numerals, and redundant explanations thereof will be omitted. The suffix "part" for the constituent elements used in the following description is to be given or mixed with consideration only for ease of specification, and does not have a meaning or role that distinguishes itself. In the following description of the embodiments of the present invention, a detailed description of related arts will be omitted when it is determined that the gist of the embodiments disclosed herein may be blurred. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. , ≪ / RTI > equivalents, and alternatives.

Terms including ordinals, such as first, second, etc., may be used to describe various elements, but the elements are not limited to these terms. The terms are used only for the purpose of distinguishing one component from another.

The singular expressions include plural expressions unless the context clearly dictates otherwise.

In the present application, the terms "comprises", "having", and the like are used to specify that a feature, a number, a step, an operation, an element, a component, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

The electric vehicle described below is a vehicle that is driven by an electric motor supplied with electric current from a rechargeable battery or other portable energy storage device. The electric vehicle is an electric vehicle, an electric motorcycle, an electric motor Includes bicycle. Also, a charger for an electric vehicle means a power converter that performs the functions necessary to charge the battery. The charger is an all-in-one charging system having a stand which receives power from an external power supply facility, a cable connected thereto, and an electric car coupler connected by a single-phase AC, and the battery is charged through the on- Means a standard charger, but is not limited to, a stand-by power supply from an external power supply system, a cable system connected thereto, and an electric car coupler connected to the DC power supply, And a quick charger, which is a method of directly charging the battery in a short time (within 30 minutes).

Generally, a charging system of an electric transport apparatus is composed of a power supply facility, a charger, an interface, and an information system. The electric power supply equipment includes an electric power meter for supplying electric power to the electric transportation device and includes a watt hour meter, an inlet wiring, a distribution board, a circuit breaker, and the like. The charger includes a slow charger for supplying power at a single- Includes rapid charger. In addition, the interface includes a coupler, a cable, and the like, which are connected to supply electric power to the electric transporting device in the charger. The coupler is a device that enables connection of the charging cable and the electric transporting device, And an inlet of the electric transport device. In this case, the connector means an apparatus attached to the charging cable and connected to the inlet of the electric transporting apparatus. The inlet is a part constituting the electric transporting apparatus coupler, and is attached to the electric transporting apparatus, Means a portion connected to a connector.

In addition, the information system refers to a system for collecting real-time information on the installation position and usage state information of the charger and monitoring the operating state of the charger in real time, or providing the collected information to the user of the electric transportation device through the web, .

 1 is a perspective view of a charger 100 for charging an electric transport apparatus 200 according to an embodiment of the present invention. Hereinafter, an electric transport apparatus 200 according to an embodiment of the present invention will be described with reference to FIG. The charger 100 will be described.

A charger 100 (hereinafter, referred to as 'charger 100') for an electric transport apparatus 200 according to an embodiment of the present invention includes a main body 110 (or a body) And a coin input port 120 and a bill insertion slot 130 are formed in the main body of the apparatus. That is, the charger 100 is provided with a coin input port 120 through which a coin is inserted into one side of the main body 110, and a bill input port 130 provided at one side of the coin input port 120 and into which bills are inserted . As described above, the charger 100 according to the embodiment of the present invention can use coins and banknotes to make settlement by various payment means.

The display unit 140 is provided on the front side of the main body 110 and displays the amount or balance of the coins input through the coin input port 120 or the bill input port 130. The display unit 140 performs a function of a display unit for displaying changes such as remaining charge, remaining charging time, charging elapsed time, or charging power amount to be charged using the charger 100, and may be, for example, an LCD display . The display unit 140 is capable of inputting a user by a touch, thereby controlling a charging time, a charging amount, and the like, and can control a display method of the display unit 140.

In addition, the charger 100 according to an embodiment of the present invention may include an RFID card in addition to a coin and a banknote. To this end, a RFID card (Radio Frequency Identification Card) An RFID card reader unit 150 is disposed. And one or more connectors connected to the electric transport apparatus 200 to charge the power supply unit of the electric transport apparatus 200. The card reader unit 150 recognizes the RFID card and transmits the recognized information to the control unit 111. The power source unit may be, for example, a battery built in the electric transport apparatus 200.

The connector may include a first connector 117 for coupling with an electric motorcycle 210 or an electric bicycle and a second connector 118 for coupling with the first electric vehicle 220. The first connector 117 may be a single phase 2-wire 220v socket and the second connector 118 may be a PWM connector. As described above, the charger 100 according to an embodiment of the present invention is equipped with a 220V socket that is commonly used in the home, so that the electric motorcycle 210 or the electric bicycle can be easily charged.

Conventionally, in order to charge the electric transportation device 200 such as the electric motorcycle 210, 220V is mainly used in a private place such as a house. However, in an embodiment of the present invention, The electric motorcycle 210 can be charged even in the charger 100 provided in a public place such as a park.

That is, the charger 100 according to an embodiment of the present invention may be provided in a common place such as a restaurant, a shopping mall, a coffee shop or the like, and the electric motorcycle 210 Can be connected to the charger 100 and charged. That is, it is possible to charge the electric motorcycle 210 even at an external place, not at home.

As described above, the charger 100 according to an embodiment of the present invention can be used in outdoor or outdoor areas. If it is raining or snowing, water may flow into the outlet, which may cause an electric shock. For this, a recess 170 formed to be recessed inward is formed on the front surface of the main body 110, and the bill insertion slot 130, the coin slot 120, the first connector 117 and the second connector 118 are disposed in the recess 170. [

The bill insertion slot 130, the coin slot 120, the first connector 117 and the second connector 118 are protruded less than the front surface of the main body 110, So that it can be covered with the lid 181. The cover 181 is formed to be substantially flush with the surface of the front surface of the main body 110 and the bill insertion slot 130, the coin slot 120, the first connector 117 and the second connector 118 Is prevented from protruding beyond the cover (181).

The lid 181 is rotatable by the hinge member 173 and is normally closed so that the lid 181 can be opened only when the user uses the lid 181. That is, the lid 181 normally closes the recess 170, so that foreign matter such as dust is supplied to the coin input port 120, the bill input port 130, the first connector 117 and the second connector 118 And prevents liquid such as water from being introduced.

The charger 100 according to the embodiment of the present invention is supplied with power only after an input of a payment means such as a coin or a banknote and operates the charger 100. In a normal state in which there is no input of an effective payment means, (100) is not operated.

Meanwhile, in an embodiment of the present invention, a charging cable 119a for connecting to a second electric vehicle 230 different from the first electric vehicle 220 is provided on one side of the main body 110, A third connector 119 is formed at an end of the cable 119a so as to be electrically connected to the power source of the second electric vehicle 230. As described above, the charger 100 according to an embodiment of the present invention includes various connectors 118 and 119 to charge various electric vehicles 220 and 230. For example, in the case where the connectors are different from one manufacturer to another, electric vehicles can be charged only by having dedicated connectors. In an embodiment of the present invention, connectors for charging electric vehicles of various electric vehicle manufacturers are connected to one charger 100 So that the electric automobile manufactured by various manufacturers can be charged in one charger 100.

One end of the charging cable 119a is connected to the main body 110 and the other end is connected to the third connector 119. That is, the third connector 119 functions as a connector to be connected to the second electric vehicle 230, and the third connector 119 is connected to an inlet formed in the electric transport apparatus 200.

FIG. 2 is a view showing a charging system of an electric transport apparatus 200 according to the present invention. In one charging apparatus 100, first to third connectors 117, 118 and 119 are provided to connect an electric motorcycle 210, It can be seen that the electric vehicle 220 and the second electric vehicle 230 can be charged at the same time. At this time, the electric motorcycle 210 is connected to the first connector 117, the first electric motor 220 is connected to the second connector 118, the second electric motor 230 is connected to the third connector 119, As shown in FIG. The first to third connectors 117, 118, and 119 are connected to a part of the electric motorcycle 210, the first electric vehicle 118, and the second electric vehicle 119, respectively, by forming a coupler.

In an embodiment of the present invention, an audio output unit 112 is formed on one side of the recess 170 to output sound to the outside. As a result, the user can guide the use of the charger 100 by voice output from the charger 100, and can inform the user of the remaining balance or the completion of charging. More specifically, the audio output unit 112 outputs an audio signal under the control of the control unit 111, and the audio output unit 112 outputs the audio signal when the charging is completed. It is possible to output a buzzer sound indicating completion of charging. For example, when the charging is completed, the audio output unit 112 may output a guidance message or a beeping beep sound. Here, the guidance message may be a voice message to guide the termination.

In addition, in the case of being exposed to the outside, at least one of the first connector 117 and the second connector 118 may be provided with a cap which can be opened and closed by an elastic member such as a torsion spring, a cap may be formed. It is preferable that the first and second connectors 117 and 118 are provided with a first cap 117a and a second cap 118a, respectively. In this case, the cap 117a or 118a is normally closed to prevent foreign matter from entering the first connector 117 or the second connector 118. When the user intends to use the cap 117a or 118a, the first cap 117a Or the second cap 118a is opened and then the first connector 117 or the second connector 118 is connected to the inlet portion of the electric transport apparatus 200 for charging.

4A is a side perspective view of a charger 100 related to the present invention. FIG. 4B is a perspective view of a mounting part 160 related to the present invention. Referring to FIGS. 4A and 4B, And a mounting portion 160 on which the third connector 119 is mounted is provided on a side surface of the second connector 119. The mounting portion 160 corresponds to the outer shape of the third connector 119 so that the third connector 119 is inserted and fixed. . In this case, the mounting portion 160 may be formed to be perpendicular to the side surface of the main body 110, or may be formed to be slightly inclined. In FIG. 4A, the mounting portion 160 is formed to be slightly inclined, For example, it may have an inclination angle of 40 to 60 degrees from the front. If the mounting portion 160 is formed to be slightly inclined with respect to the side surface, there is an advantage that the side space is not wide when the mounting portion 160 is mounted on the front surface of the charging device 100. [ As described above, in the embodiment of the present invention, the mounting portion 160 is formed to be recessed to the inside of the main body 110, It is possible to obtain an effect similar to that on the side surface of the base plate 110.

More specifically, the mounting portion 160 is fixed to the guide 170 and installed in the charger 100. The guide 170 includes a first portion 165b formed to face each other and formed in a triangular shape, A second portion 165d and a third portion 165a connecting the first portion 165b and the second portion 165d and a second portion 165b connecting the first portion 165b and the second portion 165d, And a fourth portion 165d connecting the third portion 165a. The first to fourth parts 165a, 165b, 165c and 165d are planar and the mounting part 160 is fixed to the fourth part 165d. Since the first portion 165b and the second portion 165d are triangular in shape, a connected portion of the first portion 165b and the second portion 165d is inserted into the inside of the charger 100, If the unconnected portion of the second portion 165b and the second portion 165d is formed to be exposed to the outside, the guide 170 is disposed to be inclined inward. At this time, the fourth portion 165d is directed to the front of the charger 100.

5 is a perspective view of a charging gun according to the present invention, wherein the end of the third connector 119 is formed in a substantially circular shape. The third connector 119 is formed with an annular engaging portion 119d which engages with the engaging groove 168 of the receiving portion 160 and is formed with an engaging jaw protruding outwardly on the circular circumference 119c are supported by the receiving portion 167 of the mounting portion 160. [ At this time, a plurality of connection terminals 119b are formed at the end of the third connector 119. The plurality of connection terminals 119b are electrically connected to the inlet (or charging terminal) formed in the second electric vehicle 230, Lt; / RTI >

FIG. 3 is a block diagram showing the configuration of the charger 100 related to the present invention, and FIG. 6 is a flowchart for charging the electric transport apparatus 200 related to the present invention. Hereinafter, a charging method of the electric transport apparatus 200 according to an embodiment of the present invention will be described with reference to FIG. 3 and FIG. 6 together with FIG.

In order to charge the electric transport apparatus 200, a coin or banknote is inserted into the main body 110 from the outside or an RFID card (Radio Frequency Identification Card) is read to recognize usable payment means (S110). When a coin or paper money is input through the coin input port 120 and the paper money input port 130, the coin recognition unit 121 or the paper currency recognition unit 131 recognizes that a coin or paper money has been inserted, and the inserted amount is simultaneously recognized . When the RFID card is tagged to the card reader unit 151, the amount of money accumulated in the RFID card is recognized.

Thereafter, electric power information of the electric transport apparatus 200 is transmitted to the control unit 111 (S120) by electrically connecting the electric transport apparatus 200 and the main body 110 (S120) The power is applied to the power source of the power source 200 (S130). That is, in the embodiment of the present invention, only the payment means is inputted, so that the charging by the charger 100 is performed.

The charger 100 is operated by supplying power from the external power source 105 to the control unit 111 and the power measuring unit 113. The power measuring unit 113 may be, for example, a watt hour meter, and measures an amount of power supplied to the electric transporting apparatus 200. Thereafter, whether or not there is a valid balance is continuously detected (S140) based on the measured amount of power based on the measured amount of electricity, and when the balance is zero at the step of detecting the presence or absence of the balance, When the amount of power exceeds the preset amount of power, the power supply to the power supply is interrupted (S150). As described above, according to the embodiment of the present invention, when electric power is supplied to the electric transporting apparatus 200, the electric transporting apparatus 200 is completely empty or the electric transporting apparatus 200 is no longer charged, the electric transporting apparatus 200 is automatically shut off. In addition, the user may block the electric power supply to the electric transport apparatus 200 at an arbitrary moment, and in the same manner as when the power supply is automatically stopped even if the power supply is manually stopped by the user, The charging rate is calculated according to the amount of power supplied until the moment that the charging is completed, and the charging is made.

At this time, when power is supplied to the first connector 117 by the first switch unit 114 and power supply to the second connector 118 is performed by the second switch unit 115, The power supply to the power supply unit 119 is performed by the third switch unit 116. The first to third switch units 114, 115 and 116 are controlled by the control unit 111 and are controlled by the charge calculating unit 125 based on the electric power supplied to the electric transporting apparatus 200 through the electric power measuring unit 113, The charging fee is calculated.

That is, the amount of electric power that can be charged in the electric transport apparatus 200 is calculated by the amount of electric power supplied to the electric transport apparatus 200 calculated by the electric power measurement unit 113, And if the balance is zero, the power supply to the electric transport apparatus 200 is stopped. In addition, even when the supply of the electric power corresponding to the predetermined amount is completed, the electric power supply to the electric transport apparatus 200 can be stopped.

 As described above, in one embodiment of the present invention, the charge rate is calculated based on the amount of electric power supplied to the electric transport apparatus 200, and the calculated charge rate is paid (S160).

According to an embodiment of the present invention, the charger 100 is supplied with power after recognizing the chargeable payment means, so that the charger 100 is not operated when there is no valid chargeable amount. Therefore, the charger 100 is powered off and operates only after the charger 100 recognizes the effective payment means or the payment amount, in the normal state when the charger 100 is not charged.

The payment of the charging amount according to an embodiment of the present invention can be performed by a coin, a banknote or an RFID card, and the amount of money that can be used in real time is displayed on the display unit 140. The RFID card may be an accumulation card that can be accumulated for example, and may be a credit card commonly used or a store exclusive accumulation card that can be used only in a specific store. Further, the FRID card may be a card in which a remaining amount is charged by charging a coin or a banknote, or may be a separately charged and charged amount. If the RFID card is tagged to the card reader unit 150, the controller 111 of the charger 100 can receive the RFID card stored in the RFID card, And authenticates whether the user is an authorized user based on the received user information and starts the charging procedure.

If the available amount of money remains when the power supply is interrupted in the step of interrupting the power supply, step (S170) of accumulating the balance in the RFID card may be further included. For example, when a coin or a bill is charged and the chargeable amount remains in the electric transport apparatus 200 during charging, the remaining amount is accumulated in the RFID card so that the accumulated amount can be used.

The amount of money already accumulated when the RFID card is brought into contact with the card reader unit 150 is displayed on the display unit 140 and is displayed on the display unit 140 when the power source unit of the electric transport device 200 is charged. The available balance can be displayed in real time. The display unit 140 displays information on the electric power supplied to the electric transport apparatus 200. For example, the display unit 140 may display a charging time, a power consumption, and a charging progress state.

In an embodiment of the present invention, the charge rate is calculated on the basis of the amount of electric power supplied to the electric transport apparatus 200. The charge rate may be slightly different depending on the electric power supplier or the supplier of the charger 100, The charging fee is calculated. The charging fee is calculated based on the amount of charging power supplied from the charging unit 125 to the electric transport apparatus 200 and based on the received charging power. The calculated charging charge is transmitted to the charger 100.

The foregoing detailed description should not be construed in all aspects as limiting and should be considered illustrative. The scope of the present invention should be determined by rational interpretation of the appended claims, and all changes within the scope of equivalents of the present invention are included in the scope of the present invention.

The present invention relates to a power supply apparatus and a method of controlling the same and a method of controlling the same. A first connector for connecting the first connector to the first connector and a second connector for connecting the first connector to the first connector; 171: hinge member, 175: cap, 180: emergency stop button, 181: cover

Claims (11)

A body forming an outer appearance;
A coin input port into which a coin is inserted into one surface of the main body;
A bill input port provided at one side of the coin input port and into which a bill is input;
A display unit provided on a front side of the main body and displaying an amount or a balance charged through the coin input port or the bill input port;
A card reader unit provided at one side of the coin input port and reading an RFID card (Radio Frequency Identification Card); And
And one or more connectors connected to the electric transporting device to charge the power supply of the electric transporting device,
Wherein the connector comprises:
A first connector for connection with an electric motorcycle; And
And a second connector for connection with the first electric vehicle,
Wherein the first connector is a single phase two-wire 220V outlet. The method according to claim 1,
A recessed portion formed to be recessed inward is formed on a front surface of the main body, the bill input port, the coin input port, the first and second connectors are disposed in the recess portion, and the bill input port, And the first and second connectors protrude less than the surface of the front surface of the main body. 3. The method of claim 2,
A charging cable for connecting to a second electric vehicle different from the first electric vehicle is provided on one side of the main body and a third connector is formed on the end of the charging cable so that the charging cable is electrically connected to the power source of the second electric vehicle Wherein the battery charger is connected to the battery charger. 3. The method of claim 2,
And an audio output unit is formed on one side of the recess portion to output sound to the outside. The method according to claim 1,
Wherein at least one of the first connector and the second connector is provided with a cap which can be opened and closed by an elastic member. The method of claim 3,
A mounting portion on which the third connector is mounted is provided on one side surface of the main body,
Wherein the mounting portion is formed in a shape corresponding to an outer shape of the third connector so that the third connector is inserted and fixed. The method according to claim 6,
Wherein the mounting portion is formed to be recessed inwardly of the main body, and the mounting portion becomes shallower gradually toward the front side. (a) recognizing usable payment means and a payment amount by inputting a coin or banknote into a charger for electric transportation equipment from the outside;
(b) electrically connecting the electric transport device and the charger to transmit power information of the electric transport device to the control unit;
(c) applying power to a power source of the electric transport apparatus based on the power information;
(d) measuring an amount of power supplied to the electric transport apparatus through the electric power measuring unit;
(e) continuing to detect the presence or absence of a remaining charge on the basis of the measured amount of power; And
(f) shutting off power supply to the power supply unit when the balance is zero in the step (e) or when the amount of power charged in the power supply unit of the electric transport apparatus exceeds a preset amount of power. 9. The method of claim 8,
In the step (a), the step of recognizing the payment means and the payment amount may be performed by tagging an RFID card (Radio Frequency Identification Card)
Wherein the remaining amount is accumulated in the RFID card when a usable amount remains when power supply is interrupted in the step (f). 10. The method of claim 9,
Wherein an amount of money already accumulated when the RFID card is in contact with the charger is displayed on the display unit and a balance available in the display unit is displayed in real time when the power supply unit of the electric transportation apparatus is charged. Charging method. 9. The method of claim 8,
Further comprising the step of calculating a charging charge based on an amount of electric power supplied to the electric transport apparatus and charging the calculated charge charge in the step (f).

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