KR102444759B1 - Electric Vehicle Charging System - Google Patents

Abstract

The present invention relates to an electric vehicle charging system implemented to solve problems such as charging time, charging cost, and charging space using a mobile charger, which comprises at least one mobile charging unit provided in an electric vehicle charging station and charges an electric vehicle of a driver using electricity charged therein after the driver moves the same.

Description

Electric Vehicle Charging System

The present invention relates to an electric vehicle charging system, and more particularly, to an electric vehicle charging system implemented to solve problems such as charging time, charging cost, and charging space by using a mobile charger.

In general, existing chargers use the power of the grid, so they cannot be used in areas where grid power is not reached. Also, when the capacity of the grid power is insufficient, it is difficult for the electric vehicle to supply a large amount of power in a short time. There is this.

Currently, 2 to 5 stationary chargers are installed and operated for each APT. However, as the number of residents using electric vehicles, which are rapidly spreading, increases, the number of stationary chargers at charging stations will increase in order to charge the increased number of vehicles at home. It should be installed according to the quantity.

This will lead to a huge installation cost and parking space problem, and also has a problem that a considerable amount of time, effort, and cost are required to solve these problems.

As shown in FIG. 1 , the existing charging station has no choice but to charge only a limited number of vehicles at a certain time.

In addition, at this point where charging time takes at least an hour or more, the customer has to wait until the charging is complete, and if the customer leaves the car, the charging station staff moves the charged vehicle horizontally to a place and stores it until the customer comes to find it. However, both the space problem and the manpower problem for these are not easy to solve.

In addition, in the case of electric charging in the form of communal housing, 2 to 5 fixed chargers are currently installed and operated for each APT. In order to do this, it is necessary to install the same stationary charger at the charging station according to the increased quantity, which will lead to a huge installation cost and a problem of parking space.

On the other hand, the above-mentioned background art is technical information that the inventor possessed for the derivation of the present invention or acquired in the process of derivation of the present invention, and it cannot be said that it is necessarily a known technique disclosed to the general public before the filing of the present invention. .

Korean Patent Publication No. 10-2016-0108962

One aspect of the present invention utilizes the number of quick chargers to charge and provide the mobile charger possessed, and when a vehicle comes, the vehicle is tightly parked in a general parking lot within the charging station and charged using the mobile charger, charging time, charging cost, charging space It provides an electric vehicle charging system implemented to solve problems such as

The technical problems of the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

The electric vehicle charging system according to an embodiment of the present invention includes at least one mobile charging unit provided in an electric vehicle charging station and configured to charge the user's electric vehicle using the charged electricity after the driver moves it. can do.

In one embodiment, the electric vehicle charging system according to an embodiment of the present invention is provided in at least one electric vehicle charging station to rapidly charge the mobile charging unit that has consumed all of the charged electricity by charging the electric vehicle. It may further include a fast charging device.

In one embodiment, the mobile charging unit has wheels installed at each lower corner for movement, and a display unit for displaying the amount of electricity used for charging the electric vehicle and a payment amount according to the electric charging, and payment for payment A module may be provided.

In one embodiment, the electric vehicle charging system according to an embodiment of the present invention includes at least one unit cleaning unit installed along the bottom surface of the electric vehicle charging station to clean foreign substances attached to the lower surface of the mobile charging unit; may further include.

In one embodiment, the unit cleaning unit, the first wheel guide rail extending along the bottom surface of the electric vehicle charging station so that the wheel installed on the lower side of the mobile charging unit is seated and moved; a second wheel guide rail facing the first wheel guide rail and extending along the bottom surface of the electric vehicle charging station so that a wheel installed on the other lower side of the mobile charging unit can be seated and moved; and at least one installed along between the first wheel guide rail and the second wheel guide rail, and attached to the lower side of the mobile charging unit moving along the first wheel guide rail and the second wheel guide rail It may include; a cleaning unit to clean the foreign matter.

In one embodiment, the cleaning unit is formed to have a height lower than the height between the lower surface of the mobile charging unit and the floor surface of the electric vehicle charging station so that the mobile charging unit can pass upward, and the front and rear ends are upward. an installation case forming inclined surfaces of a symmetrical structure to be gradually closer to each other; Installed on the upper side of the front end of the installation case so that the upper portion is exposed to the upper side of the installation case, a plurality of installed spaced apart from each other at regular intervals in the left and right directions, on the lower side of the mobile charging unit moving the upper side of the installation case Front-end cleaning conveyor for cleaning the attached foreign matter; Installed on the upper side of the rear end of the installation case so that the upper part is exposed to the upper side of the installation case, a plurality of pieces are installed at regular intervals in the left and right directions without intersecting the front cleaning conveyor part, and the upper side of the installation case a rear end cleaning conveyor for cleaning foreign substances attached to the lower surface of the mobile charging unit in motion; And installed in the left and right horizontal direction from the inside of the installation case, installed between the front cleaning conveyor and the rear cleaning conveyor to remove foreign substances attached to the front cleaning conveyor and the rear cleaning conveyor in the cleaning process Conveyor cleaner; may include.

In one embodiment, in the installation case, a plurality of front and rear openings are formed at regular intervals in the left and right directions along the front and rear ends so that the upper portions of the front cleaning conveyor and the rear cleaning conveyor are exposed upwards. can be

In one embodiment, the front end cleaning conveyor unit, a front end support roller installed at the front end of the front end opening; a rear end support roller facing the front end support roller and installed at a rear end of the front end opening; a plurality of roller support frames respectively installed on one side and the other side of the front end support roller and on one side and the other side of the rear end support roller to support the front end support roller and the rear end support roller; The front end inward surface is engaged with the front end support roller and installed, and the rear end inward surface is engaged with the rear end support roller and installed, and as the front end support roller and the rear end support roller are rotationally driven, the upper outward surface is the mobile charging unit Conveyor belt for cleaning rotated together in close contact with the lower side of the; and a cleaning brush installed along the outward surface of the cleaning conveyor belt.

In one embodiment, the conveyor cleaning unit, the first support roller is formed extending in the left and right horizontal direction and installed on the inside of the installation case while facing the rear end of the front-end cleaning conveyor unit; a second support roller extending in the left and right horizontal directions to face the front end of the rear end cleaning conveyor and installed inside the installation case; The front end inward surface is engaged with the first support roller and installed, and the rear end inward surface is engaged and connected to the second support roller, and as the first support roller and the second support roller rotate, the front end outward surface becomes the Auxiliary conveyor belt which is in close contact with the rear end of the front end cleaning conveyor unit and rotates together with the rear end outward surface in close contact with the front end of the front end cleaning conveyor unit; and a foreign material removal brush installed along the outward surface of the auxiliary conveyor belt to remove foreign substances attached to the front end cleaning conveyor unit and the rear end cleaning conveyor unit.

In one embodiment, the installation case is seated in a first sliding groove extending in the front-rear direction along the lower one side of the mobile charging unit and installed along the upper side to induce the forward and backward movement of the mobile charging unit A first seating frame and a second seating frame installed along the other upper side to be seated in a second sliding groove extending in the front and rear directions along the other lower side of the mobile charging unit to induce the forward and backward movement of the mobile charging unit can be provided.

In one embodiment, the front-end cleaning conveyor unit is installed with a plurality of spaced apart at regular intervals before and after along the upper inward surface of the cleaning conveyor belt, and rotationally driven when the mobile charging unit moves to the upper side of the installation case, the cleaning conveyor It may further include; a plurality of elliptical rollers for repeatedly raising the upper side of the belt in the upward direction.

According to one aspect of the present invention described above, by using the number of fast chargers to charge and provide the mobile charger possessed, and when the vehicle comes, the vehicle is tightly parked in a general parking lot within the charging station and charged using the mobile charger, charging time, charging It can provide the effect of solving problems such as cost and charging space.

The effects of the present invention are not limited to the above-mentioned effects, and various effects may be included within the range apparent to those skilled in the art from the description below.

1 is a view showing a conventional electric vehicle charging system.
2 is a view showing a schematic configuration of an electric vehicle charging system according to an embodiment of the present invention.
FIG. 3 is a view showing the mobile charging unit of FIG. 2 .
4 is a view showing a schematic configuration of an electric vehicle charging system according to another embodiment of the present invention.
5 and 6 are diagrams showing a schematic configuration of an electric vehicle charging system according to another embodiment of the present invention.
7 is a view showing the cleaning unit of FIG. 5 .
FIG. 8 is a view showing the front end cleaning conveyor of FIG. 7 .
9 is a view for explaining a driving method of the elliptical roller of FIG.
FIG. 10 is a view showing the conveyor cleaning unit of FIG. 7 .

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [0012] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [0014] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [0016] Reference is made to the accompanying drawings, which show by way of illustration specific embodiments in which the present invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the present invention. It should be understood that the various embodiments of the present invention are different but need not be mutually exclusive. For example, certain shapes, structures, and characteristics described herein with respect to one embodiment may be implemented in other embodiments without departing from the spirit and scope of the invention. In addition, it should be understood that the location or arrangement of individual components within each disclosed embodiment may be changed without departing from the spirit and scope of the present invention. Accordingly, the detailed description set forth below is not intended to be taken in a limiting sense, and the scope of the present invention, if properly described, is limited only by the appended claims, along with all scope equivalents to those claimed. Like reference numerals in the drawings refer to the same or similar functions throughout the various aspects.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the drawings.

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

Referring to FIG. 2 , an electric vehicle charging system 10 according to an embodiment of the present invention includes a mobile charging unit 100 .

At least one mobile charging unit 100 is provided in the electric vehicle charging station P, and the driver moves and charges his/her electric vehicle C using the charged electricity.

In one embodiment, the mobile charging unit 100 has wheels 120 installed at each lower corner for movement, and displays the amount of electricity used for charging the electric vehicle C and the payment amount according to the electric charge. A display unit and a payment module for payment (not shown in the drawings for convenience of explanation) may be provided.

4 is a view showing a schematic configuration of an electric vehicle charging system according to another embodiment of the present invention.

Referring to FIG. 4 , the electric vehicle charging system 20 according to another embodiment of the present invention includes a plurality of mobile charging units 100 and a plurality of fast charging devices 200 .

Here, since the mobile charging unit 100 is the same as the components of FIG. 1 , a description thereof will be omitted.

At least one fast charging device 200 is provided at the electric vehicle charging station P to rapidly charge the mobile charging unit 100 that has consumed all of the charged electricity by charging the electric vehicle C.

The electric vehicle charging system 20 according to another embodiment of the present invention having the configuration as described above uses the number of quick chargers to charge and provide a mobile charger, and when a vehicle comes, the vehicle is placed in a general parking lot within the charging station. By standing up tightly and charging using a portable charger, problems such as charging time, charging cost, and charging space can be solved.

5 and 6 are diagrams showing a schematic configuration of an electric vehicle charging system according to another embodiment of the present invention.

5 and 6 , the electric vehicle charging system 30 according to another embodiment of the present invention includes a mobile charging unit 100 , a fast charging device 200 , and a unit cleaning unit 300 .

Here, the mobile charging unit 100 and the fast charging device 200 are the same as the components of FIG. 1 or FIG. 2 , and thus descriptions thereof will be omitted.

The unit cleaning unit 300 is installed along the bottom surface of the electric vehicle charging station (P) at least one or more to clean foreign substances such as dust attached to the lower surface of the mobile charging unit (100).

In an embodiment, the cleaning unit 300 may include a first wheel guide rail 310 , a second wheel guide rail 320 , and a cleaning unit 400 .

The first wheel guide rail 310 faces the second wheel guide rail 320 so that the wheel 120-1 installed on the lower side of the mobile charging unit 100 can be seated and moved, and the electric vehicle charging station (P) ) is formed extending along the bottom surface of

The second wheel guide rail 320 is opposed to the first wheel guide rail 310 so that the wheel 120-2 installed on the other lower side of the mobile charging unit 100 is seated and moved, and the electric vehicle charging station (P) ) is formed extending along the bottom surface of

At least one cleaning unit 400 is installed along between the first wheel guide rail 310 and the second wheel guide rail 320 , and the first wheel guide rail 310 and the second wheel guide rail 320 . Cleans foreign substances attached to the lower surface of the mobile charging unit 100 moving along the .

The electric vehicle charging system 30 according to another embodiment of the present invention having the configuration as described above continuously cleans foreign substances attached to the lower side of the mobile charging unit 100, thereby Corrosion of the mobile charging unit 100 due to the accumulation of foreign substances such as dust attached to the lower side of the mobile charging unit 100 due to frequent use and movement can be effectively prevented.

7 is a view showing the cleaning unit of FIG. 5 .

Referring to FIG. 7 , the cleaning unit 400 includes an installation case 410 , a front-end cleaning conveyor 420 , a rear-end cleaning conveyor 430 , and a conveyor cleaning unit 440 .

The installation case 410 is formed with a height lower than the height between the lower surface of the mobile charging unit 100 and the bottom surface of the electric vehicle charging station P so that the mobile charging unit 100 can pass upward, and the front end and The inclined surfaces 410a and 410b having a structure symmetrical to each other are formed so that the rear ends are gradually closer to each other toward the upper side.

In one embodiment, the installation case 410, a plurality of at regular intervals in the left and right directions along the front and rear ends so that each upper portion of the front cleaning conveyor 420 and the rear cleaning conveyor 430 can be exposed upwards. A front end opening L1 and a rear end opening L2 may be formed.

In one embodiment, the installation case 410 is seated in the first sliding groove H1 extending in the front and rear directions along the lower side of the mobile charging unit 100 to induce the forward and backward movement of the mobile charging unit 100 . The first seating frame (F1) installed along one upper side of the mobile charging unit 100 and the second sliding groove (H2) extending in the front-rear direction along the other lower side of the mobile charging unit 100 are seated in the mobile charging unit 100 ) may be provided with a second mounting frame (F1) installed along the other upper side to induce the forward and backward movement.

The front end cleaning conveyor unit 420 is installed on the upper side of the front end of the installation case 410 so that the upper part is exposed to the upper side of the installation case 410, and a plurality of them are installed at regular intervals in the left and right directions, and the installation case ( The foreign substances attached to the lower surface of the mobile charging unit 100 that are moving the upper side of the 410 are cleaned.

The rear end cleaning conveyor unit 430 is installed on the upper side of the rear end of the installation case 410 so that the upper part is exposed to the upper side of the installation case 410, and does not intersect with the front end cleaning conveyor unit 420 and is constant with each other in the left and right directions A plurality of pieces are installed spaced apart from each other, and foreign substances attached to the lower surface of the mobile charging unit 100 moving on the upper side of the installation case 410 are cleaned.

Conveyor cleaning unit 440 is installed in the left and right horizontal direction from the inside of the installation case 410, is installed between the front end cleaning conveyor unit 420 and the rear end cleaning conveyor unit 430, the front end cleaning conveyor unit 420 in the cleaning process ) and remove foreign substances attached to the rear end cleaning conveyor 430 .

The cleaning unit 400 having the configuration as described above continuously cleans the foreign substances attached to the lower side of the mobile charging unit 100 , so that the mobile charging unit 100 is frequently used and moved according to the frequent use and movement of the mobile charging unit 100 . ), it is possible to effectively prevent corrosion of the mobile charging unit 100 due to the accumulation of foreign substances such as dust attached to the lower side.

FIG. 8 is a view showing the front end cleaning conveyor of FIG. 7 .

Referring to FIG. 8 , the front-end cleaning conveyor 420 includes a front-end support roller 421 , a rear-end support roller 422 , a plurality of roller support frames 423 , a cleaning conveyor belt 424 and a cleaning brush 425 . includes

Here, the rear end cleaning conveyor unit 430 has the same configuration as the components of the front end cleaning conveyor unit 420 to be described later, the front end support roller 421 of the front end cleaning conveyor unit 420, the rear end support roller 422, Configurations such as a plurality of roller support frame 423, cleaning conveyor belt 424 and cleaning brush 425 may be equally applied, and description thereof will be omitted to avoid duplication of description.

The front end support roller 421 is installed at the front end of the front end opening L1 while facing the rear end support roller 422 so that the front end inward surface of the cleaning conveyor belt 424 is engaged and connected.

The rear end support roller 422 is installed at the rear end of the front end opening L1 while facing the front end support roller 421 so that the rear end inward surface of the cleaning conveyor belt 424 engages and connects.

The roller support frame 423 is installed on one side and the other side of the front end support roller 421, and one side and the other side of the rear end support roller 422, respectively, to support the front end support roller 421 and the rear end support roller 422. .

In one embodiment, the roller support frame 423 is a spring that can be buffered in the vertical direction at the middle so as to buffer vibration or shock transmitted from the front end support roller 421 or the rear end support roller 422. A buffer means (not shown in the drawings for convenience of description) may be provided.

Conveyor belt for cleaning 424, the front end inward surface is engaged with the front end support roller 421 is installed, the rear end inward surface is engaged with the rear end support roller 422 is connected, the front end support roller 421 and the rear end support roller As the 422 is rotationally driven, the upper outward surface is in close contact with the lower surface of the mobile charging unit 100 and rotates together.

The cleaning brush 425 is provided along the outward surface of the cleaning conveyor belt 424 .

The shear cleaning conveyor 420 having the configuration as described above may further include a plurality of elliptical rollers 426 .

A plurality of elliptical rollers 426 are installed spaced apart at regular intervals before and after along the upper inward surface of the cleaning conveyor belt 424, and when the mobile charging unit 100 moves to the upper side of the installation case 410, the As shown in 9, by repeatedly raising the upper side of the cleaning conveyor belt 424 in the upward direction, the removal of foreign substances by the cleaning conveyor belt 424 can be made more effectively.

FIG. 10 is a view showing the conveyor cleaning unit of FIG. 7 .

Referring to FIG. 10 , the conveyor cleaning unit 440 includes a first support roller 441 , a second support roller 442 , an auxiliary conveyor belt 443 , and a brush 444 for removing foreign substances.

The first support roller 441 is formed extending in the left and right horizontal direction and is installed inside the installation case 410 while facing the rear end of the front-end cleaning conveyor 420, and the front-end inward surface of the auxiliary conveyor belt 443 is connected and installed.

The second support roller 442 is formed to extend in the left and right horizontal direction and is installed inside the installation case 410 while facing the front end of the rear end cleaning conveyor 430, and the rear end of the auxiliary conveyor belt 443 has an inward facing surface connected and installed.

Auxiliary conveyor belt 443, the front end inward surface is engaged with the first support roller 441 is connected and installed, the rear end inward surface is connected to the second support roller 442, the first support roller 441 and As the second support roller 442 rotates, the front end outward surface is in close contact with the rear end of the front end cleaning conveyor unit 420 , and the rear end outward surface is rotated together in a state in close contact with the front end of the front end cleaning conveyor unit 420 .

The brush 444 for removing foreign substances is installed along the outward surface of the auxiliary conveyor belt 443 to remove foreign substances attached to the front cleaning conveyor 420 and the rear cleaning conveyor 430 .

Conveyor cleaning unit 440 having the configuration as described above, the front end cleaning conveyor unit 420 and the rear end cleaning conveyor unit 430 while rotating in the opposite direction to the front end cleaning conveyor unit 420 and the rear end cleaning conveyor unit 430 to the By removing the attached foreign substances, it is possible to stably remove the foreign substances by the front cleaning conveyor 420 and the rear cleaning conveyor 430 .

The above-described embodiments are for illustration, and those of ordinary skill in the art to which the above-described embodiments belong can easily transform into other specific forms without changing the technical idea or essential features of the above-described embodiments. You will understand. Therefore, it should be understood that the above-described embodiments are illustrative in all respects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and likewise components described as distributed may also be implemented in a combined form.

The scope to be protected through this specification is indicated by the claims described below rather than the above detailed description, and should be construed to include all changes or modifications derived from the meaning and scope of the claims and their equivalents. .

10, 20, 30: electric vehicle charging system
100: removable charging unit
200: fast charging device
300: unit cleaner
400: cleaning unit

Claims (3)

a mobile charging unit provided in at least one electric vehicle charging station, the mobile charging unit for charging the user's electric vehicle using the charged electricity after being moved by the driver; and
Including a; at least one fast charging device provided in an electric vehicle charging station to rapidly charge the mobile charging unit, which has consumed all of the charged electricity by charging the electric vehicle,
The mobile charging unit,
Wheels are installed in each lower corner for movement, and a display unit for displaying the amount of electricity used for charging the electric vehicle and the payment amount according to the electric charge, and a payment module for payment,
It further includes; at least one unit cleaning unit installed along the bottom surface of the electric vehicle charging station to clean foreign substances attached to the lower surface of the mobile charging unit,
The unit cleaning unit,
a first wheel guide rail extending along a bottom surface of an electric vehicle charging station so that a wheel installed on a lower side of the mobile charging unit can be seated and moved;
a second wheel guide rail facing the first wheel guide rail and extending along the bottom surface of the electric vehicle charging station so that a wheel installed on the other lower side of the mobile charging unit can be seated and moved; and
At least one or more is installed between the first wheel guide rail and the second wheel guide rail, and is attached to the lower surface of the mobile charging unit moving along the first wheel guide rail and the second wheel guide rail a cleaning unit for cleaning foreign substances; and
The cleaning unit is
The height is lower than the height between the lower surface of the mobile charging unit and the bottom surface of the electric vehicle charging station so that the mobile charging unit can pass upward, and the front end and the rear end are symmetrical to each other so that the front end and the rear end gradually get closer to each other toward the upper side. an installation case forming a slope;
Installed on the upper side of the front end of the installation case so that the upper portion is exposed to the upper side of the installation case, a plurality of installed spaced apart from each other at regular intervals in the left and right directions, on the lower side of the mobile charging unit moving the upper side of the installation case Front-end cleaning conveyor for cleaning the attached foreign matter;
Installed on the upper side of the rear end of the installation case so that the upper part is exposed to the upper side of the installation case, a plurality of pieces are installed at regular intervals in the left and right directions without intersecting the front cleaning conveyor part, and the upper side of the installation case a rear end cleaning conveyor for cleaning foreign substances attached to the lower surface of the mobile charging unit in motion; and
Doedoe installed in the left and right horizontal direction from the inside of the installation case, installed between the front cleaning conveyor and the rear cleaning conveyor to remove foreign substances attached to the front cleaning conveyor and the rear cleaning conveyor in the cleaning process cleaner; including;
The installation case is
A plurality of front and rear openings are formed at regular intervals in the left and right directions along the front and rear ends so that the upper portions of the front cleaning conveyor and the rear cleaning conveyor are exposed upward,
The front end cleaning conveyor unit,
a shear support roller installed at the front end of the front end opening;
a rear end support roller facing the front end support roller and installed at a rear end of the front end opening;
a plurality of roller support frames respectively installed on one side and the other side of the front end support roller and on one side and the other side of the rear end support roller to support the front end support roller and the rear end support roller;
The front end inward surface is engaged with the front end support roller and installed, and the rear end inward surface is engaged with the rear end support roller and installed, and as the front end support roller and the rear end support roller are rotationally driven, the upper outward surface is the mobile charging unit Conveyor belt for cleaning rotated together in close contact with the lower side of the; and
Includes; cleaning brush installed along the outward surface of the cleaning conveyor belt;
The conveyor cleaning unit,
a first support roller extending in the left and right horizontal directions to face the rear end of the front end cleaning conveyor and installed inside the installation case;
a second support roller extending in the left and right horizontal directions to face the front end of the rear end cleaning conveyor and installed inside the installation case;
The front end inward surface is engaged with the first support roller and installed, and the rear end inward surface is engaged and connected to the second support roller, and as the first support roller and the second support roller rotate, the front end outward surface becomes the Auxiliary conveyor belt which is in close contact with the rear end of the front-end cleaning conveyor unit and rotates together with the rear-end outward surface in close contact with the front end of the front-end cleaning conveyor unit; and
Containing, including;
The installation case is
A first seating frame installed along an upper side so as to be seated in a first sliding groove extending in the front-rear direction along the lower side of the mobile charging unit to induce the forward and backward movement of the mobile charging unit, and the mobile charging unit and a second seating frame installed along the other upper side so as to be seated in a second sliding groove extending in the front and rear direction along the other lower side of the to induce the forward and backward movement of the mobile charging unit,
The front end cleaning conveyor unit,
A plurality of pieces are installed spaced apart at regular intervals before and after along the upper inward surface of the cleaning conveyor belt, and when the mobile charging unit moves to the upper side of the installation case, it is rotated to repeatedly raise the upper side of the cleaning conveyor belt in the upward direction. A plurality of elliptical rollers giving; further comprising, an electric vehicle charging system.
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