WO2020130472A1

WO2020130472A1 - Wireless charging system for electric-powered vehicle

Info

Publication number: WO2020130472A1
Application number: PCT/KR2019/017443
Authority: WO
Inventors: 조정구
Original assignee: (주)그린파워
Priority date: 2018-12-20
Filing date: 2019-12-11
Publication date: 2020-06-25
Also published as: KR102031545B1

Abstract

The present invention relates to a wireless charging system for an electric-powered vehicle and, more specifically, to a wireless charging system for more efficiently and stably charging an electric-powered vehicle, the system comprising: an electric-powered vehicle traveling forward and backward; a power feed line comprising a power feeder and installed along a travel line of the electric-powered vehicle; and a power collecting unit disposed on one side surface of the electric-powered vehicle so as to receive power from the power feeder of the power feed line in a non-contact manner, whereby the electric-powered vehicle is supplied with power from the power feed line installed on the ground through wireless charging even while moving along the travel line.

Description

Wireless charging system for electric actuators

The present invention relates to a wireless charging system of an electric driving body, the wireless charging of the electric driving body disposed in the lateral direction of the electric driving body to supply electric power to the electric driving body moving in the front-rear direction through electrical energy System.

In general, electric vehicles, vehicles driven through electrical energy such as RTGC (Rubber-Tired Gantry Crane), RMGC (Rail-Mounted Gantry Crane), and electric railroad vehicles (hereinafter referred to as'electric vehicles') are used as power sources. The received power is transmitted in a contact or non-contact manner.

At this time, the conventional contact type power charging device is provided to supply power through the connector contact to the electric vehicle, so there is a problem that wear may occur in the connector during frequent use. In addition, the power charging device of the contact method has a disadvantage in that it is difficult to supply power to a driving vehicle because the power supply source and the battery of the electric vehicle must be connected by wire.

Accordingly, recently, a power charging device in which wireless charging is performed in a non-contact manner through a current collecting pad connected to an electric vehicle and a power supply pad connected to a power supply source has been disclosed, and related technologies include Korean Registered Patent Publication No. 10-1897153 ("Wireless Power Transmission Structure of Port RTGC with Modular Current Collector", Announced on September 13, 2018).

As described in FIG. 1, a coil for feeding a coreless power supply line is installed to transmit power to the ground to supply power to the port RTGC, and a modular current collector is installed in a non-contact manner. It is characterized by being.

However, as described above, a structure that is embedded in the ground for wireless charging of an electric vehicle, when disposed outdoors, must have a watertight structure to prevent fluid from flowing in, such as drop water or running water. Accordingly, since the installation cost of the device for a more detailed watertight structure is additionally generated, an initial cost is excessively generated, which leads to a disadvantage.

In addition, in the wireless charging method composed of the feeding pad and the collecting pad, the amount of power supplied varies depending on the gap between the feeding pad and the collecting pad. Therefore, when vibration or movement due to force occurs in various directions, such as a port RTGC, the vertical gap or Due to the left and right deviation, there is a problem that the filling amount is not constant.

The present invention is to solve the problems of the prior art, the current collector pad disposed on the side of the electric drive body, and the power supply line is disposed spaced apart in the lateral direction of the electric drive body, the feed line facing the current collector pad is formed Through this, it relates to a wireless charging system of an electric drive provided to be supplied with power wirelessly while the electric drive is being moved.

The wireless charging system of the present invention for achieving the above object, an electric driving body running in the front-rear direction; A feeding line installed along the driving line of the electric driving body; A feed inverter that flows an alternating current through the feed line; And a current collector provided on one side of the electric actuator to receive electric power from the power supply line in a non-contact manner, wherein the power supply line includes a power supply unit for transmitting power to the current collector, and the home All of them, a fixing device coupled with the electric driving body, a current collecting pad disposed at a predetermined distance outside the fixing device, and connecting the current collecting pad to the fixing device, but adjusting an interval between the electric driving body and the current collecting pad It may be characterized in that it comprises a gap adjusting device for maintaining a gap between the current collecting pad and the feeding portion, and the gap adjusting device and the gap maintaining portion to maintain a constant distance between the current collecting pad and the feeding portion. have.

At this time, the gap maintaining portion comprises a guide body coupled to the current collecting pad and a contact member provided on the guide body, wherein the contact member comprises one or more wheels to move in close contact with the feed line. Can be done with

In addition, the gap adjusting device includes a first coupling member formed on the fixing device; A second coupling member formed on the current collecting pad; And a connecting member having one end coupled to the first coupling member and the other end coupled to the second coupling member, wherein the first coupling member is disposed above the second coupling member, and the other end of the coupling member is provided. The current collector pad may be inclined toward the ground to move the current collecting pad outward by gravity.

In addition, the first coupling member includes a guide member disposed outside the one end of the connection member, and the guide member may be characterized in that it comprises means for sliding the connection member to slide.

Also, the sliding means may be characterized by one or more rollers or bearings.

In addition, the connecting member may be characterized in that it is rotatably formed with respect to one end coupled to the first coupling member.

In addition, the gap adjusting device includes a first coupling member formed on the fixing device; A second coupling member formed on the current collecting pad; And a connection member having one end coupled to the first coupling member or the fixing device and the other end coupled to the second coupling member or current collecting pad, wherein the connection member is formed with a tension spring so that the current collecting pad is pressed outward. It can be characterized by being.

In addition, the gap adjusting device includes a first coupling member formed on the fixing device; A second coupling member formed on the current collecting pad; And a connection member having one end coupled to the first coupling member and the other end coupled to the second coupling member, wherein the first coupling member includes a guide member disposed outside the one end of the connection member, and the At least one of a spring, a motor, and a hydraulic cylinder may be formed on the first coupling member, and the current collector pad may be pressed outward.

In addition, it includes an interval measuring sensor for measuring the distance between the current collecting pad and the feeding part, and the gap adjusting device so that the distance between the current collecting pad and the feeding part is constant through the value measured by the gap measuring sensor of the gap holding part. It can be characterized as being adjusted.

In addition, a drive motor is formed in the gap adjusting device, and the drive motor may be controlled through a distance value measured from the gap measurement sensor.

In addition, a hydraulic cylinder is formed in the gap adjusting device, and the hydraulic cylinder may be controlled through a distance value measured from the gap measuring sensor.

In addition, the interval adjustment device is provided in a plurality, it may be characterized in that a plurality of interval adjustment device is disposed in the vertical direction or front and rear.

In addition, the electric driving body may be characterized by consisting of a gantry crane (Gantry Crane).

In addition, when the height of the electric driving body is changed, it may be characterized in that it comprises a height adjustment unit for adjusting the height of the current collector.

In addition, the gap adjusting device may be characterized in that it comprises a means for adjusting the current collector to be adjacent to the electric driving body when the electric driving body moves to the outside.

In addition, it may be characterized in that the plurality of the current collector is attached to one side of the feed line to simultaneously supply power to the plurality of electric actuators.

In addition, it may be characterized in that the plurality of current collectors are attached to both sides of the feeder line to simultaneously supply power to the plurality of electric actuators.

In addition, a wireless charging system characterized in that the resonance parameters of the feed inverter are adjusted in real time so that the resonant frequency of the feed line is constant according to the number of the current collectors connected to the feed line.

In addition, the feed inverter may include a resonant circuit that resonates with the feed line, and may include a feed inverter controller that controls a constant current to flow through the feed line.

In addition, the current collector includes a resonant circuit connected to the current collector coil, a rectifier for rectifying the output of the current collector coil and the resonant circuit, and a regulator and current collector controller for converting the output of the rectifier into a form of power required by the electric actuator. Including, the current collector controller may be characterized in that it controls the regulator according to the charge amount (SOC) and load capacity of the battery mounted on the electric drive.

In addition, the current collector controller may be characterized in that it has a means for wireless communication with the power supply inverter controller.

In addition, the current collector controller may be characterized in that it has a controller and a wired or wireless communication means for controlling the electric drive.

The wireless charging system of the electric drive body of the present invention according to the configuration as described above is supplied with electric power from the power supply line formed extending in the front-rear direction, and as the electric drive body travels, it is possible to reduce the weight of the device while minimizing the capacity of the battery. There is an advantage in that the control can be performed more efficiently.

In the present invention, one end is positioned above the other end so that the current collecting pad is formed to be close to the power feeding part by its own weight, and the contact member is in close contact with the housing of the power feeding part so that the current collecting pad and the power feeding part can maintain a constant distance from each other. Accordingly, the present invention can provide a device capable of more stable power supply.

In addition, as the gap adjusting portion of the present invention is composed of a plurality and is disposed in the up and down and front and rear directions, when the gap adjusting portion rotates around one end of the first coupling member, the gap is adjusted while the current collecting pad maintains the facing with the feeding portion. Therefore, it is possible to provide a more efficient power supply.

1 is a perspective view showing a wireless power transmission structure of a port RTGC having a modular current collector according to the prior art.

2 is a perspective view of an RTGC according to an embodiment of the present invention.

3 is a front view of RTGC according to an embodiment of the present invention.

4 to 6 is an enlarged front view of the main portion of the RTGC to show the wireless charging device according to various embodiments of the present invention.

Figure 7 is an exemplary operation of the interval adjusting device according to an embodiment of the present invention.

8 is a perspective view of an RTGC according to another embodiment of the present invention.

Figure 9 is an enlarged front view of the main portion of the RTGC according to another embodiment of the present invention.

Figure 10 is an enlarged front view of the main portion of the RTGC according to another embodiment of the present invention.

Hereinafter, a wireless charging system of an electric driving body according to various embodiments of the present invention will be described in detail with reference to the accompanying drawings. The drawings introduced below are provided as examples in order to sufficiently convey the spirit of the present invention to those skilled in the art. Therefore, the present invention is not limited to the drawings presented below and may be embodied in other forms. In addition, the same reference numbers throughout the specification indicate the same components.

At this time, unless there are other definitions in the technical terms and scientific terms used, it has the meanings commonly understood by those of ordinary skill in the art to which this invention belongs, and the subject matter of the present invention is unnecessary in the following description and the accompanying drawings. Descriptions of well-known functions and configurations that may be blurred will be omitted.

2 and 3 relates to an embodiment of a wireless charging system of the present inventors electric actuator, Figure 2 is a perspective view of the RTGC, Figure 3 is a front view of the RTGC, respectively. Referring first to FIG. 2, the electric drive body 100 of the present invention is composed of an electric vehicle, an electric vehicle including an RTGC (Rubber-Tired Gantry Crane), an RMGC (Rail-Mounted Gantry Crane) and an electric railroad vehicle, It may be configured with various types of devices that are driven by receiving power, such as a mobile robot that is driving indoors/outdoors. In the embodiments described below, the wireless charging system of the present invention will be described more clearly with reference to the case where the electric driving body 100 is configured as a gantry crane.

The electric drive body 100 of the present invention composed of a gantry crane includes a top 110 including an upper frame 111, a side frame 112, and a lower frame 113, and an upper frame 111 of the tower 110 ) On both sides of the jib 120 may be configured. At this time, the length of the upper frame 111 may be formed in both directions, a pair of side frames 112 are coupled to both ends of the upper frame 111, but the side frames 112 are vertically long. It is formed, the bottom frame 113 is formed at the bottom of the side frame 112, the bottom frame 113 may include a driving means to move on the ground, such as a wheel. And a control unit (C) may be formed on the side frame (112) or the lower frame (113), the control unit (C) stores and discharges the battery, or the driving means of the lower frame (113) runs on the ground And, the jib 120 can be made to control the transfer to both sides on the upper frame 111, and the hoist to be described later is transferred up and down on the jib 120.

Here, the present invention may further include a feeding line 200 spaced apart from one side of the electric driving body 100 to the outside, and on one side of the electric driving body 100, from the feeding line 200 The current collector 300 receiving power may be formed. At this time, the power supply line 200 may be disposed on one side or the other side of the electric drive body 100, or may be disposed on both sides. Here, the control unit (C) of the present invention can be selectively installed on a pair of side frames (112), when the current collector 300 is formed on the side frame (112) is less power loss is more efficient Can.

In addition, a coil is formed in the feed line 200, and the feed line 200 may be connected to a feed inverter to be configured to enable power application and frequency control. Here, the feed inverter is configured to flow AC current through the feed line, and the present invention provides real-time resonant parameters of the feed inverter so that the resonant frequency of the feed line is constant according to the number of the current collectors connected to the feed line. It can be made to tune into. In addition, the feed inverter includes a resonant circuit that resonates with the feed line, and may include a feed inverter controller that controls a constant current to flow through the feed line. At this time, the present invention may be configured to adjust the tuning of the resonance frequency by adjusting the inductance value L or the capacitance value C of the resonant circuit.

In addition, the current collector includes a resonant circuit connected to the current collector coil, a rectifier for rectifying the output of the current collector coil and the resonant circuit, and a regulator and current collector controller for converting the output of the rectifier into a form of power required by the electric actuator. It can contain. The current collector controller may control the regulator according to the charge amount (SOC) and load capacity of the battery mounted on the electric driving body. At this time, the current collector controller may include a means for wirelessly communicating with the power supply inverter controller, or may include a means for communicating with the controller for controlling the electric drive by wire or wirelessly.

Next, referring to FIG. 3, the electric drive body 100 of the present invention may be configured to travel in the front-rear direction through the wheel W, and the current collector 300 is integrally configured to extend the front-rear feeder line. It may be characterized in that the power is supplied by the wireless charging method from the furnace (200). In addition, the electric drive body 100 may be configured to transport the container T to a desired position as the jib 120 is moved to both sides but the hoist 130 is moved up and down.

4 to 6 are enlarged front views of main parts of RTGC according to various embodiments of a wireless charging system of an electric drive according to the present invention.

First, referring to FIG. 4, which is a partially enlarged view of FIG. 3, a fixing device 310 fixed on one side of the electric driving body 100 and a current collector arranged a predetermined distance apart from the fixing device 310 It includes a pad 320 and an interval adjusting device 330 connecting the fixing device 310 and the current collecting pad 320, and the current collecting pad 320 is configured to receive power from the power supply line 200. Can.

And the feed line 200 is made of a housing 210 fixed to the ground but extending upward and a coil 220 mounted in the housing, the housing 210 is supported fixed to the ground It may be composed of a power supply unit 212 coupled to the upper end of the frame 211 and the support frame 211. At this time, the current collector pad 320 and the power supply unit 212 may be disposed to face each other. In addition, current may flow through the coil 220 to generate a magnetic flux, and may be configured to supply electric power to the current collecting pad 320 through magnetic induction or magnetic resonance.

At this time, the present invention further includes a gap maintaining unit 400 that maintains the gap between the current collecting pad 320 and the feeding unit 212, wherein the gap maintaining unit 400 is through a mechanical configuration as in the corresponding embodiment. It can be provided in a variety of forms, such as made by electrical control, such as the gap measurement sensor to be described later.

When the gap maintaining portion 400 is formed through a mechanical configuration, the gap maintaining portion 400 is coupled to the bottom of the current collecting pad 320, but the guide body 410 and the guide body extending downward. It may be formed on the 410, including a contact member 420 in close contact with the feed line 200 during wireless charging.

The contact member 420 may be configured to have a length in both directions or one end is made of an elastic material to be in close contact with the feed line 200. Here, the contact member 420 may be configured to be disposed on the support frame 211 of the housing 210, and the current collector pad 320 is disposed above the contact member 420 and the support frame 211 ) More power feeding portion 212 may be disposed on the upper side to be configured to face each other. Of course, a separate housing is further provided on the upper side of the power supply unit 212, but the contact member 420 may be disposed on the upper side of the current collecting pad 320.

Here, the space adjusting device 330 of the present invention may be configured such that one end coupled with the fixing device 310 is disposed above the other end coupled with the current collecting pad 320, and accordingly, the weight of the current collecting pad 320 is adjusted. Through this, a force to be adjacent to the feed line 200 is generated. In addition, the contact member 420 may be in close contact with the housing 210 through the force generated above, and the gap maintaining portion 400 is combined with the current collecting pad 320 or both sides of the contact member 420. The distance between the current collecting pad 320 and the power feeding unit 212 may be determined according to the length of the direction to maintain the gap.

In addition, the gap adjusting device 330 is formed on the outer surface of the fixing device 310 and the inner surface of the current collecting pad 320, the first coupling member 331 and the second coupling member 332, one end of the first It includes a connecting member 333 coupled to the coupling member 331 and the other end is coupled to the second coupling member 332, the connection member 333 is based on one end coupled with the first coupling member 331 It can be characterized by being formed to be rotatable. At this time, one end of the first coupling member 331 and the connecting member 333 and the other end of the second coupling member 332 and the connecting member 333 may be bearing-coupled to be rotatable, respectively. And one end of the connecting member 333, the shaft is formed up and down the length may be configured to penetrate the first coupling member 331, one end of the shaft is coupled to the connecting member 333, the other end The motor may be provided to be configured to control the rotation angle of the connecting member 333.

Next, referring to FIG. 5 according to another embodiment of the present invention, the first coupling member 331 includes a guide member disposed on the outside of one end of the connection member 333, wherein the guide member is the connection member It comprises means for sliding to slide, the means for sliding can be configured to include one or more rollers or bearings. Accordingly, when the distance between the electric driving body 100 and the power supply line 200 is spaced apart, the connecting member 333 moves outward through the guide member, but the gap maintaining member 400 has a current collecting pad and a feeding part. It can be configured to maintain the gap between. In addition, when the distance between the electric driving body 100 and the feed line 200 is close, the connecting member 333 may be configured to be drawn inward along the guide member.

At this time, the guide member, the inner side is disposed on the upper side than the outside, the connecting member 333 may be formed to face outward by its own weight, the weight of the connecting member 333 is the gap maintaining portion 400 It is transferred to the contact member 420 of the feed line 200 in close contact with the housing 210, the gap between the current collector pad and the power supply can be maintained.

And according to another embodiment of the present invention, referring to FIG. 6, the spacing adjusting device of the present invention is a first coupling member 331 formed on the fixing device 310, one end of the first coupling member 331 It is connected to the other end of the second coupling member or a connecting member 333 is connected to the current collector pad, a power generating unit 334 may be formed on the first coupling member. The power generating unit 334 may be formed of any one selected from springs, motors, and hydraulic cylinders, and may be adjusted to press the current collecting pad to the power supply line 200 or to be drawn into the electric actuator. Of course, in the present invention, the first coupling member 331 in addition to the power generating unit 334 may be configured to include a guide member.

7 is a view showing an operation of the interval adjusting device according to an embodiment of the wireless charging system of the present invention the electric drive body.

7-(a) to 7-(c), the electric driving body 100 of the present invention may have a different distance from the power supply line 200 disposed on one side during driving. At this time, the present invention is through the gap adjusting device 330 connected between the fixing device 310 and the current collecting pad 320, even if the separation distance between the electric drive body 100 and the power supply line 200 changes. The distance between the 320 and the power supply line 200 may be formed to be kept constant.

In the case of FIG. 7, the gap adjusting device 330 is illustrated as being configured to be rotational, and when the distance between the electric driving body 100 and the feeding line 200 is close, the gap adjusting device 330 Rotating in the direction, the fixing device 310 and the current collecting pad 320 may be configured to be adjacent to each other. Conversely, when the distance between the electric driving body 100 and the feeding line 200 is farther away, the gap adjusting device 330 may be configured to rotate in the other direction so that the fixing device 310 and the current collecting pad 320 are spaced apart. have. That is, according to the present invention, even in an environment in which the distance between the electric drive body 100 and the feeding line 200 is different, the gap adjusting device so that the feeding portion of the feeding line 200 and the current collecting pad 320 are constant 330 may be formed to be adjusted.

Alternatively, the gap adjusting device 330 may be configured to adjust the gap between the current collecting pad 320 and the power feeding line 200, and when using wireless charging, the current collecting pad 320 is the power feeding line ( 200), and may be adjusted to move the current collecting pad 320 closer to the electric driving body 100 when moving outside.

8 and 9 show a perspective view of an RTGC according to another embodiment of the wireless charging system of the electric drive body of the present invention and an enlarged front view of main parts of the RTGC, respectively.

8 and 9, the feed line 200 may be formed to extend in the front-rear direction, and when the height of the electric actuator changes, the height of the current collector is adjusted with the electric driver 100 Since it is integrally configured, the electric driving body 100 may be configured to move together when moving. In addition, as described above, the power supply unit of the power supply line 200 and the current collector pad of the current collector unit 300 are maintained to face each other so that power supply can be continuously made. Here, the front-rear direction of the feed line 200 may include a curve section including a straight section, and the electric actuator 100 may be formed to move along the feed line 200.

In addition, the space adjusting device 330 may be provided in plural and disposed along the front-rear direction, and the space-adjusting device 330 disposed in the front-rear direction may be twisted due to rotation of the current collecting pad 320 in the front-rear direction. Can be prevented. In addition, the gap adjusting device 330 may be configured in plural in both the front-rear direction and the up-down direction, and accordingly, there is an advantage in that the facing states of the current collecting pad 320 and the power feeding unit 212 can be continuously maintained.

In addition, the electric drive body 100 of the present invention is composed of a pair or more can be made to be disposed on both sides and the front-rear direction of one feed line (200). In addition, the pair of electric actuators 100 may be configured such that each gap maintaining part 400 is in close contact with both sides of one feed line 200. Accordingly, the pair of electric actuators 100 has an advantage in that collision between each other is prevented in advance and more efficient space utilization is possible. At this time, each of the pair of electric actuators 100 is provided with a control unit C to perform a container transport operation.

Subsequently, a gap adjusting device 330 is provided in each of the pair of electric actuators 100, and the end of the feed line 200 is inclined so as to be disposed on the lower side, so that the current collecting pad 320 is fed through its own weight. 200) may be generated. As described above, it may be provided to maintain a constant interval through the gap maintaining part 400, and the gap maintaining part 400 moves along the outer surface of the feed line 200 including the function of an auxiliary wheel. It may be configured to. In addition, as the gap adjusting device 330 is composed of a plurality and disposed vertically, the current collecting pad 320 may be prevented from being tilted in the vertical rotation direction.

Figure 10 relates to another embodiment of the wireless charging system of the present invention the electric drive, Figure 10 shows an enlarged front view of the main portion of the RTGC.

Referring to FIG. 10, the gap maintaining part 400 of the present invention measures the gap to measure the distance between the electric driving body 100 and the feed line 200 or between the current collecting pad 320 and the feed line 200 A sensor 430 may be included, and based on this, the gap adjusting device 330 may be controlled to adjust the gap between the current collecting pad 320 and the feed line 200.

At this time, a drive motor or a hydraulic cylinder may be formed in the gap adjusting device 300, and a drive motor or a hydraulic cylinder so that the distance between the current collecting pad and the power feeding part is kept constant through the distance value measured from the gap measuring sensor. May be controlled.

In addition, in the wireless charging method of the electric actuator using the above-mentioned wireless charging system, step A in which the gap adjusting device is adjusted so that the current collecting pad is adjacent to the power feeding unit, and the current collecting pad supplies power in a non-contact manner from the power feeding unit. The receiving step B and the gap maintaining unit may include a step C maintaining a gap between the current collecting pad and the feeding unit.

The step A may be initiated in a situation in which a control signal is received from the outside of the controller of the electric drive body, or the battery on the controller is reduced to a certain level or less. In addition, the current collector provided in the electric driving body can be adjusted to face the current collecting pad through the gap adjusting device to the outside of the electric driving body, and the current collecting pad of the current collector faces the power feeding portion disposed outside. Can be deployed. At this time, the gap adjusting device may be made by its own weight as in the previous device, or may be made through various means such as a motor, a spring, and a hydraulic cylinder.

In addition, step B may be performed such that charging is performed in a non-contact manner between the current collector pads facing each other and the power feeding unit. At this time, along with this, step C may be performed together, and the power supply efficiency may be kept constant as the gap between the current collector pad and the feeder is maintained through the gap maintaining unit.

In addition, the gap maintaining unit may be provided to be provided on the current collecting pad by being constructed of a mechanical device so that the gap is maintained through close contact with the feeding unit or the housing including the feeding unit. Accordingly, in the wireless charging method according to another embodiment of the present invention, step A is the step A wherein the gap adjusting device transfers the current collecting pad to the outside of the electric actuator to close the feeding portion and step A ₁ and the gap maintaining portion are in close contact. The member may be made of A ₂ steps in close contact with the housing. And in the wireless charging method according to another embodiment of the present invention, the contact member may be made of wheels, and in step C, when the electric driving member is running, the contact member may be configured to move in close contact with the housing on which the power supply unit is formed. have.

In addition, the interval maintenance unit may be included as an interval measurement sensor to perform device control through data processing. This is in addition a wireless charging method according to another embodiment of the present invention, the gap adjusting device by the distance data measured by C ₁ step and the cavity-holding unit for the C phase is the distance measured holding portion distance is controlled in accordance with, It may be composed of C ₂ steps to close the current collecting pad to the feeding portion. In step C, the distance measurement sensor may be configured to determine whether the measurement value t is within a reference interval range by measuring the distance to the power supply in real time. In addition, when the measured value t is greater than or equal to the reference interval (t> t _max ) or less (t> t _min ), the measurement device t may be included in the reference interval by controlling the gap adjusting device. In addition, the previous processes may be configured to be terminated when necessary power is sufficiently supplied or a stop signal is received by the controller.

As described above, in the present invention, specific matters such as specific components and the like have been described by the limited embodiment drawings, but these are provided to help the overall understanding of the present invention, and the present invention is limited to the above-described one embodiment. No, those of ordinary skill in the art to which the present invention pertains are capable of various modifications and variations from these descriptions.

Therefore, the spirit of the present invention is not limited to the described embodiments, and should not be determined, and all claims that are equivalent to or equivalent to the claims of the present invention as well as the claims described below belong to the scope of the spirit of the present invention. will be.

Claims

An electric driving body running in the front-rear direction;

A feeding line installed along the driving line of the electric driving body;

A feed inverter that flows an alternating current through the feed line; And

A current collector provided on one side of the electric driving body to receive electric power from the feed line in a non-contact manner;

It includes,

The feeder line includes a feeder for transmitting power to the current collector,

The current collector,

A fixing device coupled with the electric driving body, a current collecting pad spaced a predetermined distance outside the fixing device, and connecting the current collecting pad to the fixing device, but adjusting an interval to adjust an interval between the electric driving body and the current collecting pad And a gap maintaining unit maintaining a gap between the device and the current collecting pad and the power feeding unit,

The gap adjusting device and the gap maintaining unit is a wireless charging system, characterized in that to maintain a constant gap between the current collecting pad and the feeding unit.
According to claim 1,

The gap maintaining portion is made of a guide body coupled to the current collecting pad and a contact member provided on the guide body,

The contact member is a wireless charging system, characterized in that it is composed of one or more wheels to move in close contact with the feed line.
According to claim 1,

The gap adjusting device

A first coupling member formed on the fixing device;

A second coupling member formed on the current collecting pad; And

A connection member having one end coupled to the first coupling member and the other end coupled to the second coupling member;

Including,

The first coupling member is disposed above the second coupling member,

Wireless charging system, characterized in that the other end of the connecting member is inclined toward the ground and the current collecting pad is moved outward by gravity.
According to claim 3,

The first coupling member includes a guide member disposed outside the one end of the connection member,

The guide member is a wireless charging system, characterized in that it comprises a means for sliding the connecting member to slide.
According to claim 4,

The sliding means is a wireless charging system, characterized in that one or more rollers or bearings.
According to claim 3,

The connection member is a wireless charging system, characterized in that rotatably formed with respect to one end coupled to the first coupling member.
According to claim 1,

The gap adjusting device

A first coupling member formed on the fixing device;

A second coupling member formed on the current collecting pad; And

A connection member having one end coupled to the first coupling member and the other end coupled to the second coupling member;

Including,

The connecting member is a wireless charging system, characterized in that the tension spring is formed and the current collecting pad is pressed outward.
According to claim 1,

The gap adjusting device

A first coupling member formed on the fixing device;

A second coupling member formed on the current collecting pad; And

A connection member having one end coupled to the first coupling member and the other end coupled to the second coupling member;

Including,

The first coupling member includes a guide member disposed outside the one end of the connection member,

A wireless charging system, characterized in that at least one of a spring, a motor, and a hydraulic cylinder is formed on the first coupling member and the current collecting pad is pressed outward.
According to claim 1,

It includes a distance measuring sensor for measuring the distance between the current collector pad and the power supply,

A wireless charging system, characterized in that the gap adjusting device is adjusted so that the gap between the current collecting pad and the feeding portion is constant through a value measured by the gap measuring sensor of the gap holding portion.
The method of claim 9,

A drive motor is formed in the gap adjusting device,

Wireless charging system, characterized in that the driving motor is controlled through the distance value measured from the gap measurement sensor.
The method of claim 9,

A hydraulic cylinder is formed in the gap adjusting device,

Wireless charging system, characterized in that the hydraulic cylinder is controlled through the distance value measured from the gap measurement sensor.
According to claim 1,

The interval adjusting device is provided in plurality,

A wireless charging system, characterized in that a plurality of spacing adjusting devices are arranged in the up-down or forward-backward direction.
The method according to any one of claims 1 to 11,

The electric driving body is a wireless charging system, characterized in that consisting of a gantry crane (Gantry Crane).
The method according to any one of claims 1 to 10,

A wireless charging system comprising a height adjusting unit for adjusting the height of the current collector when the height of the electric driving body changes.
The method according to any one of claims 1 to 11,

The distance adjusting device is a wireless charging system, characterized in that it comprises a means for adjusting the current collector to be adjacent to the electric drive when the electric drive moves to the outside.
According to claim 1,

A wireless charging system, characterized in that a plurality of the current collectors are attached to one side of the feed line to simultaneously supply power to a plurality of electric actuators.
According to claim 1,

A wireless charging system, characterized in that a plurality of the current collectors are attached to both sides of the feed line to simultaneously supply power to a plurality of electric actuators.
The method of claim 16 or 17,

A wireless charging system characterized in that the resonance parameters of the feed inverter are adjusted in real time so that the resonant frequency of the feed line is constant according to the number of the current collectors connected to the feed line.
According to claim 1,

The feed inverter includes a resonant circuit that resonates with the feed line,

And a power supply inverter controller for controlling a constant current to flow through the power supply line.
According to claim 1,

The current collector includes a resonant circuit connected to the current collector coil, a rectifier for rectifying the output of the current collector coil and the resonant circuit, a regulator for converting the output of the rectifier into a form of power required by the electric actuator, and a current collector controller. and,

The current collector controller is a wireless charging system, characterized in that for controlling the regulator according to the amount of charge (SOC) and load capacity of the battery mounted on the electric drive.
The method of claim 20,

A feed inverter controller for controlling a constant current to flow through the feed line;

Further comprising,

The current collector controller has a wireless charging system, characterized in that it has a means for wireless communication with the power supply inverter controller.
The method of claim 20,

The current collector controller is a wireless charging system, characterized in that it has a controller and a wired or wireless communication means for controlling the electric drive.