KR20180011701A - Wireless charging device and wireless charging method using the same - Google Patents

Abstract

The present invention relates to a wireless charging device and a wireless charging method of vehicles using the same. The technical objective is to use a magnetic induction method and a magnetic resonance method or if necessary, uses only one between the methods, and communicate with vehicles when a vehicle is placed within a chargeable place to transmit/receive information necessary for charging, or to transmit a charging state in real time during charging, such that a user utilizes waiting time required to charge a vehicle. For example, disclosed is a wireless charging device comprising: a current transmitting unit which transmits any current among a first test current, a second test current and a charging current to a vehicle according to a current control command; a searching unit which in a process of transmitting the first test current to the vehicle, searches and provides a first coordinate of a location having a largest induction current amount of the first test current, and in a process of transmitting the second test current to the vehicle, searches and provides a second coordinate of a location having a largest induction current amount of the second test current; and a control unit. The control unit is as follows: if the vehicle is placed in a wireless charging space, moves the current transmitting unit to a coordinate of a location away from the vehicle at a predetermined distance, and controls the current transmitting unit to transmit the first test current to the vehicle; moves the current transmitting unit to the first coordinate of a location having a largest induction current amount of the first test current searched by the searching unit, and controls the current transmitting unit to transmit the second test current to the vehicle; and moves the current transmitting unit to the second coordinate of a location having a largest induction current amount of the second test current searched by the searching unit and controls the current transmitting unit to transmit the charging current.

Description

TECHNICAL FIELD [0001] The present invention relates to a wireless charging device, and a wireless charging method using the wireless charging device.

Embodiments of the present invention relate to a wireless charging device and a vehicle wireless charging method using the same.

Recently, as electric vehicles have emerged, interest in building charging infrastructure is increasing. There are various charging methods such as battery charging, rapid charging device, wireless charging device, and charging business business model are beginning to appear. In Europe, test cars and charging stations have become more prominent. In Japan, automobile manufacturers and electric power companies are running pilot cars for electric vehicles and charging stations.

As the spread of electric vehicles is expected to become popular in the future, it is required to provide a safe and fast charging method that shortens the charging time and increases the convenience. Accordingly, it is possible to solve the inconvenience of the wired charging method A variety of non-contact charging methods have been proposed.

The near-field wireless charging method is charged by the magnetic resonance method. The magnetic resonance method uses a resonance phenomenon that vibrates at a specific frequency with a large amplitude, and a power source is connected to one of the two coils and the other is connected to an electronic device to charge by using a current generated by resonance . Such a magnetic resonance method has an advantage that power transmission is possible even when the distance between the transmitter of the wireless charging device and the receiver of the device to be charged in the vehicle becomes 1 m to 2 m.

That is, in the magnetic resonance method, the induction distance is 10 times or more as compared with the magnetic induction method by wireless charging by electromagnetic resonance, but the organic loss according to the induction distance is also 10 times or more in the electromagnetic induction process at a distance. In conclusion, the magnetic resonance method has a problem that electromagnetic induction loss is large when the induction distance is large.

In addition, the near-field wireless charging method is charged through a magnetic induction method. The magnetic induction method uses a primary coil as a transmitter of a wireless charging device, uses a secondary coil as a receiver of a device to be charged inside the vehicle, and generates a magnetic field generated in the primary coil of the transmitter of the wireless charging device And the current is supplied to the secondary coil of the receiver of the device to be charged.

 In this case, there is an advantage of high power transmission using a technique using magnetic energy coupling by the primary coil of the transmitter of the wireless charging device and the secondary coil of the receiver of the charging device inside the vehicle. However, The primary coil of the transmitter of the device and the secondary coil of the receiver of the device to be charged inside the vehicle must be adjacent to each other by a short distance of several millimeters and the primary coil of the transmitter of the wireless charging device and the charging coil There is a disadvantage in that the efficiency of the power transmission changes sharply according to the alignment of the secondary coil of the receiver of the device.

The magnetic induction method as described above is a wireless charging method by electromagnetic induction. As compared with the magnetic resonance method, when the charging time is short and the induction distance between the transmitter of the wireless charging device and the receiver of the charging target device in the vehicle is short The rate is high. However, if the distance between the transmitter of the pre-charging device and the receiver of the device to be charged in the vehicle is large, the wireless charging function is lost depending on the alignment position.

That is, when the vehicle is driven according to the driving habit of the user or the environment of the parking space, and the vehicle can not accurately move to the position of the transmitter of the wireless charging device, guidance between the transmitter of the wireless charging device and the receiver of the charging device inside the vehicle There is a problem that the wireless charging function is lost because the distance becomes large.

Korean Patent Laid-Open Publication No. 10-2012-0041446 relates to a method and system for wirelessly charging a vehicle, and it is an object of the present invention to provide a method and system for charging a vehicle wirelessly, It is disclosed that wireless charging can be carried out among them. However, a method for solving the above problems is not disclosed.

Korean Patent Publication No. 10-2012-0041446

It is an object of the present invention to provide a vehicle wireless charging method that can be used alone or in combination with a magnetic induction method and a magnetic resonance method, and a wireless charging device for controlling the same.

In addition, the present invention provides a vehicle wireless charging method that enables a user to utilize a charge waiting time by transmitting and receiving information necessary for charging by communicating with a vehicle when the vehicle is located in a predetermined rechargeable period, And to provide a wireless charging device for controlling the wireless charging device.

A wireless charging device according to an embodiment of the present invention includes: a current transmission unit that transmits a current of any one of a first test current, a second test current, and a charge current to a vehicle according to a current control command; Searching for and providing a first coordinate of a position where the amount of induced current of the first test current is the largest in the process of transmitting the first test current to the vehicle, A retrieval unit for retrieving and providing a second coordinate of a position where the induced current amount of the second test current is largest; And controlling the current transmitter to transmit the first test current to the vehicle after moving the current transmitter to coordinates of a position spaced a specific distance from the vehicle when the vehicle is located within the wireless charging section, Controls the current transmitter so that the second test current is transmitted to the vehicle after the current transmitter is moved to the first coordinate of the position where the induced current amount of the first test current is the largest detected by the search unit And a controller for controlling the current transmitter to provide the charging current by moving the current transmitter to a second coordinate of a position where the induced current amount of the second test current is the largest.

The controller may control the current transmitter to transmit the first test current to the current receiver of the vehicle and may determine the direction of the X and Y axes in the course of transmitting the first test current to the current receiver of the vehicle. And the searching unit may search the X axis and Y axis coordinates of the position where the amount of the induced current of the first test current is the largest in the process of moving the current transmitter along the X axis and the Y axis .

The control unit controls the current transmitter to transmit the second test current to the current receiver of the vehicle at the positions of the X-axis and Y-axis coordinates retrieved through the search unit, The current transmitter moves up and down along the Z axis direction in the process of being transmitted to the current receiving unit of the current transmitter, And the second test current may include a test current of a magnetic resonance method.

The current transmission unit may further include: a main transmission coil; And a plurality of auxiliary transmission coils disposed along the periphery of the main transmission coil around the main transmission coil, wherein the control unit controls the auxiliary transmission coils to be arranged around the main transmission coil It can be rotated along the circumference.

Also, the controller may be connected to the driver's portable terminal through the wireless network when the vehicle is located in a predetermined interval, receive the electric vehicle information, the user's charging request amount and driver's information from the portable terminal, The user can request approval from the portable terminal after completing the charging according to the result of the approval by the user.

Also, the controller may adjust the amount of electrons emitted from the current transmitter to the current receiver of the vehicle using the organic magnetic reflective diaphragm, and the organic magnetic reflective diaphragm may include a reflector metal that does not absorb electromagnetic waves, Alloy body.

The current transmitter is provided on each of a plurality of parking surfaces provided for wireless charging of the vehicle, and the control unit controls the current transmitting unit to sequentially charge the vehicle so that the vehicle is wirelessly charged according to the parking order on the parking surface And identifies the presence or absence of electric charge for the parked vehicle on the parking surface, and selectively controls the wireless charging through the current transmitter.

The current transmission unit may be installed on a plurality of parking surfaces provided for wireless charging of the vehicle so as to be movable along transport rails provided along the plurality of parking surfaces, It is possible to sequentially control the current transmission unit so that the vehicle is wirelessly charged according to one sequence and to identify the presence or absence of electric charging of the parked vehicle on the parking surface to selectively control the wireless charging through the current transmission unit .

The controller may set a parking order on the parking surface by using a proximity sensor provided in each of the current transmission units and may set at least one of the first test current and the second test current applied through the current transmitter It is possible to identify the presence or absence of electric charge for the parked vehicle on the parking surface.

In a method for wirelessly charging a vehicle using a wireless charging device according to another embodiment of the present invention, when a vehicle is located on a parking surface for wireless charging, the current transmitter of the wireless charging device transmits a first test current to the vehicle step; The controller of the wireless charging device moves the current transmitter along the X axis and the Y axis to search for a first coordinate of a position where the induced current amount of the first test current is the largest; Transmitting the second test current to the vehicle at the point of the first coordinate; Searching the second coordinates of a position where the amount of induced current of the second test current is the largest while moving the current transmitter along the Z axis; And charging the vehicle by transmitting a charging current to the vehicle at the points of the first coordinate and the second coordinate.

According to the present invention, a magnetic induction system and a magnetic resonance system can be combined or used alone if necessary.

In addition, according to the present invention, when the vehicle is located in a certain period in which the vehicle can be charged, the vehicle can communicate with the user to transmit and receive information necessary for charging, or transmit the charging status in real time even when charging.

1 and 2 are network diagrams for explaining a vehicle wireless charging system according to an embodiment of the present invention.
3 is a block diagram illustrating an internal structure of a vehicle wireless charging system according to an embodiment of the present invention.
4 is a block diagram illustrating an internal structure of a wireless charging device according to an embodiment of the present invention.
5 to 7 are views for explaining an embodiment of a method of moving the wireless charging device of FIG.
8 to 10 are views for explaining another embodiment of the moving method of the wireless charging device of FIG.
11 is a diagram for explaining a general magnetic induction method and loss electrons.
FIG. 12 is a diagram for explaining a vehicle wireless charging process according to an embodiment of the present invention.
13 is an exemplary view for explaining the configuration of the organic magnetic reflective partitioning plate of Fig.
FIG. 14 is a view showing an example of a configuration in which a wireless charging device according to an embodiment of the present invention is applied to a plurality of parking surfaces.
15 is a view showing an example different from the configuration in which the wireless charging device according to the embodiment of the present invention is applied to a plurality of parking surfaces.

The terms used in this specification will be briefly described, and the present invention will be described in detail.

As used herein, the term "vehicle" includes all moving means that are movable through electrical charging. For example, it may include an electric vehicle, an electric motorcycle, a transport vehicle, and the like.

In the present invention, at least one of the X axis, the Y axis, the Z axis, and the R axis is applied to the current transmitter of the vehicle wireless device depending on the type of the vehicle. If the type of vehicle is a vehicle (e.g., an electric vehicle) with a steering device (i.e., a swivel device), the X-axis, Y-axis, Z-axis, and R-axis are applied to the current transmitter of the vehicle wireless device . On the other hand, in the case where the type of the vehicle is a vehicle without a steering device (for example, a conveying bogie, an electric bogie, etc.), the X-axis and Z-axis directions are applied to the current transmitter of the vehicle wireless device. At this time, if the type of the vehicle is a vehicle without a steering device, the vehicle moves along the rail in the X-axis straight line.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. Also, in certain cases, there may be a term selected arbitrarily by the applicant, in which case the meaning thereof will be described in detail in the description of the corresponding invention. Therefore, the term used in the present invention should be defined based on the meaning of the term, not on the name of a simple term, but on the entire contents of the present invention.

When an element is referred to as "including" an element throughout the specification, it is to be understood that the element may include other elements as well, without departing from the spirit or scope of the present invention. Also, the terms "part," " module, "and the like described in the specification mean units for processing at least one function or operation, which may be implemented in hardware or software or a combination of hardware and software .

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

1 and 2 are network diagrams for explaining a vehicle wireless charging system according to an embodiment of the present invention. 3 is a block diagram illustrating an internal structure of a vehicle wireless charging system according to an embodiment of the present invention.

Referring to Figures 1-3, a vehicle wireless charging system includes a wireless charging device 100 and a vehicle 200. The wireless charging device 100 includes a current transmitter 110 and the vehicle 200 includes a current receiver 210.

The wireless charging device 100 is connected to a terminal 200 associated with the vehicle 200 via a wireless network (e.g., beacon, Bluetooth, WiFi, etc.) when the vehicle 200 operated by the user is located in a certain region of the vehicle wireless charging section. (E.g., a smart phone, a PDA, a tablet PC, etc.) owned by a driver of a vehicle to transmit and receive data.

At this time, the wireless charging device 100 receives electric vehicle information (e.g., remaining capacity, magnetic field frequency, coil speed, etc.) from the driver's smart device 220, user demand amount, driver information Card number, direct debit account number, password, etc.).

The wireless charging device 100 calculates the charging completion time and the charging amount according to the wireless charging method information, the user requirement amount, and the driver information received from the terminal device 220 in the vehicle 200, and provides the charging completion time and the charging amount to the terminal device 220. At this time, the wireless charging device 100 can confirm whether the wireless charging method of the vehicle is a magnetic resonance type, a magnetic induction type, a magnetic resonance type, and a magnetic induction type using the wireless charging type information.

Accordingly, the user can check the information displayed on the terminal device 220 and check the estimated time required for charging, so that the user can utilize the charging waiting time.

Hereinafter, the charging process will be described in more detail with reference to FIG. The current transmitter 110 of the wireless charging device 100 includes a transmission coil 111 and a transmission source coil 112 and the current receiver 210 of the vehicle 200 is connected to the reception coil 211 and the reception source coil 212).

The transmission coil 111 of the current transmission unit 110 provides current to the reception coil 211 of the current reception unit 210 by the amount of the current to be charged and then proceeds with the settlement according to the payment information previously received from the terminal device 220 . At this time, the wireless charging device 100 connects with the smart device 220 of the driver through a wireless network (for example, beacon, Bluetooth, Wi-Fi, etc.) to request approval from the user, .

The search unit 120 then automatically searches for the reception coil 211 of the current receiver 210 and recognizes the position of the receiver coil 211 of the current receiver 210. Then, The transmitting coil 111 transmits the first test current to the receiving coil 211 of the current receiving unit 210. In this case,

That is, the transmitting coil 111 of the current transmitting unit 110 is located at a position of a position distant from the receiving coil 211 of the current receiving unit 210 located in a certain region of the vehicle radio charging section, The first test current is transmitted to the receiving coil 211 of the current receiving unit 210 and the induced current amount and coordinates of the first test current are retrieved.

The reason why the transmitting coil 111 of the current transmitting unit 110 transmits the first test current to the receiving coil 211 of the current receiving unit 210 is that the coordinates of the position where the induced current amount of the first test current is the largest is To search.

To this end, the transmitting coil 111 of the current transmitting unit 110 moves in the X-axis direction and the Y-axis direction while providing a first test current to the receiving coil 211 of the current receiving unit 210, The transmitting coil 111 of the current transmitting unit 110 can retrieve the coordinates of the position where the induced current amount of the first test current is the largest.

The position of the receiving coil 211 of the wireless charging device 100 and the current receiving unit 210 is changed according to the driver's parking habit. The transmission coil 111 of the vehicle 200 moves in the X-axis direction and the Y-axis direction and primarily scans the position of the transmission coil 111 of the straddle-type vehicle 200 to move to the position where the amount of induced current is the largest.

When the coordinates of the position where the induced current amount of the first test current is the largest is found through the above process, the wireless charging device 100 moves to the coordinates of the position where the induced current amount of the first test current is the largest, The wireless charging device 100 transmits the second test current to the receiving coil 211 of the current receiving unit 210. [

At this time, the transmitting coil 111 of the current transmitting unit 110 transmits the second test current to the receiving coil 211 of the current receiving unit 210 while repeating rising and falling in the Z-axis direction, And re-scans the coordinates.

The reason why the transmitting coil 111 of the current transmitting unit 110 transmits the test current of the magnetic resonance method and the test current of the magnetic induction method to the receiving coil 211 of the current receiving unit 210 is as follows. In order to charge the vehicle 200 using the coordinates of the position where the induced current amount is larger in the induced current amount with respect to at least one of the test current and the self-induced test current.

The transmitting coil 111 of the current transmitting unit 110 is connected to the receiving coil 211 of the current receiving unit 210 in the process of transmitting at least one of the test current of the magnetic resonance type and the test current of the magnetic induction type, Of the induced current amount with respect to at least one of the test current of the magnetic induction type and the test current of the magnetic induction type, Test current and a self-induced test current.

The X-axis, Y-axis, and Z-axis coordinates of the position where the transmission coil 111 of the wireless charging device 100 is to be moved are determined through the above process, and the wireless charging device 100 moves to the coordinates of the corresponding position The current is transmitted to the receiving coil 211 of the current receiving unit 210 to charge the vehicle, so that the current lost can be minimized and the maximum charging effect can be expected.

The position of the receiving coil 211 of the wireless charging device 100 and the current receiving unit 210 is changed according to the driver's parking habit. The transmission coil 111 moves in the Z-axis direction and scans the position of the disturbed reception coil 211 to move to the position where the amount of induced current is the largest, thereby minimizing the loss current and maintaining the best transmission efficiency. That is, the power loss of the magnetic resonance method can be minimized and the efficiency can be maximized.

That is, the magnetic resonance system and the magnetic induction system are used in combination with the magnetic resonance system and the magnetic induction system, respectively. However, in the magnetic resonance system, the induction distance is 10 times or more as compared with the magnetic induction system. The organic induction method has a problem that the organic loss due to the induction distance is more than 10 times. In the magnetic induction method, the distance between the wireless charging device and the vehicle must be close to a short distance of several millimeters.

In order to charge the vehicle without losing the function of wireless charging even when the vehicle is traveling according to the user's driving habit and can not accurately move to the position of the wireless charging device, The transmitting coil 111 searches for the coordinates of the position where the induced current amount of the first test current is the largest and determines the coordinates of the wireless charging device 100 as the X and Y coordinates.

Then, after moving to the wireless charging device 100 with the coordinates of the position where the induced current amount is the largest, the transmission of the current transmission unit 110 is performed using at least one of the magnetic current test type test current and the magnetic induction type test current The Z coordinate of the coil 111 is determined.

Since the X, Y and Z coordinates determined through the above process are determined based on the coordinate of the largest position of the induced current amount of the test current, it is a position where the lost current can be minimized and the maximum charge effect can be observed.

As a result, since the transmission coil 111 of the current transmitter 110 moves to the X, Y, and Z coordinates and wirelessly charges the vehicle 200, the current lost is minimized and the maximum charging effect can be seen will be.

Although not shown in FIGS. 1 and 2, the wireless charging device 100 further includes an organic magnetic reflective diaphragm (FIGS. 4 and 150), and the organic magnetic reflective diaphragm 150 includes a receiving coil The amount of current lost can be minimized to supply current to the receiving coil 211 of the current receiving unit 210 through the organic magnetic reflective diaphragm.

The organic magnetic reflective partition plate 150 may be implemented as an alloy body using a reflector metal (for example, silver, aluminum, magnesium or the like) that does not absorb electromagnetic waves or a reflector metal, And reflects the electrons induced in the light emitting layer 211.

That is, since the organic magnetic reflective partition plate 150 does not absorb electromagnetic waves by adjusting the angle by adjusting the upward / downward gradient, the current transmitter 110 reflects electrons induced in the reception coil 211 of the current receiver 210 The amount of electrons lost during the induction to the receiving coil 211 of the current receiving unit 210 can be adjusted.

The organic magnetic reflective partition plate 150 is attached or not attached to the upper and lower portions of the film having good permeability so as to maintain a predetermined gap therebetween so that the current transmitting portion 110 is connected to the receiving coil 211 of the current receiving portion 210 The amount of electrons can be maximized and the charging time can be reduced. The shape of the organic magnetic reflection diaphragm may be circular, lattice, or spiral.

4 is a block diagram illustrating an internal structure of a wireless charging device according to an embodiment of the present invention.

1 and 4, the wireless charging device 100 includes a current transmission unit 110, a search unit 120, a wireless communication unit 130, and a control unit 140.

The current transmitter 110 transmits any one of the first test current, the second test current, and the charge current to the vehicle under the control of the controller 140.

In one embodiment, the current transmitter 110 is connected to the current transmitter 110 in the X-axis direction and the Y-axis direction on the plan view of the current transmitter 110 under the control of the controller 140 in the process of transmitting the first test current to the vehicle 200 Crossing. Thus, the search unit 120 can search for the coordinates of the position where the induced current amount of the first test current is the largest.

The current transmitter 110 may control the current of the receiving coil 211 of the current transmitter 110 under the control of the controller 140 in the course of transmitting the second test current to the vehicle 200, And moves up and down repeatedly in the axial direction. Accordingly, the search unit 120 can search for the coordinates of the position where the induced current amount of the second test current is the largest.

The search unit 120 searches the coordinates of the position having the largest induced current amount of the first test current in the process of transmitting the first test current to the vehicle under the control of the control unit 140, ).

The search unit 120 searches the coordinates of the position having the largest induced current amount of the second test current in the process of transmitting the second test current to the vehicle under the control of the control unit 140, ).

More specifically, the searching unit 120 searches for a current of at least one of a self-resonant test current and a magnetic induction test current to the vehicle under the control of the controller 140, The coordinates of the position where the induced current amount is the largest among the induced current amounts of at least one of the test current of the resonance type and the test current of the magnetic induction type is searched, Type test current and the self-induction type test current, and supplies the test current to the control unit 140.

The wireless communication unit 130 wirelessly communicates with the terminal device associated with the vehicle according to an instruction from the control unit 140 to transmit and receive data. The wireless communication unit 130 receives electric vehicle information (for example, remaining capacity, wireless charging scheme information, magnetic field frequency, coil power of the coil, etc.) from the smart device 220 of the driver, Card number, direct debit account number, password, etc.). At this time, the wireless charging method information is used to confirm whether the wireless charging method of the vehicle is a magnetic resonance type, a magnetic induction type, a magnetic resonance type, or a magnetic induction type.

When the vehicle is located within the parking space, the controller 140 receives the charging information from the terminal device associated with the vehicle through the wireless communication unit 130, calculates the expected charging time, the scheduled charging cost, and the expected charging current amount according to the charging information To the terminal device. Accordingly, the user can check the information displayed on the terminal device and confirm the estimated time required for the charging, so that the user can utilize the charging waiting time.

The control unit 140 proceeds to settle the settlement according to the settlement information previously received from the terminal device 220 after providing the current to the vehicle by the amount of the current to be charged. At this time, the wireless charging device 100 connects with the smart device 220 of the driver through a wireless network (for example, beacon, Bluetooth, Wi-Fi, etc.) to request approval from the user, .

The control unit 140 then moves the current transmitter 110 to the coordinates of the position spaced by a specific distance from the vehicle 200 and then sets the position of the receiver 210 to transmit the first test current to the vehicle 200 Search and confirm.

At this time, the control unit 140 moves the current transmitting unit 110 in the X-axis direction and the Y-axis direction in the process of transmitting the first test current to the vehicle by the current transmitting unit 110. The reason why the controller 140 moves the current transmitter 110 in the X-axis direction and the Y-axis direction is to search for the coordinates of the position where the induced current amount of the first test current is the largest.

When the search unit 120 finds the coordinates of the position having the largest induced current amount of the first test current in the process of transmitting the first test current to the vehicle 200 by the current transmitting unit 110, The current transmitter 110 is moved to the coordinates of the position where the amount of the induced current of the first test current detected by the current detector 120 is the largest. That is, the controller 140 moves the current transmitter 110 to the X-axis and Y-axis coordinates retrieved by the search unit 120.

5 and 6, since the current suspension 210 is different for each vehicle 200 and the position of the current receiver 210 changes according to the driver's parking habit, The transmission coil 111 is moved in the X-axis direction and the Y-axis direction to primarily scan the position of the current receiving unit 210 of the vehicle that has been driven and moved to the position where the amount of induced current is the largest.

Then, the control unit 140 controls the transmitting coil 111 so that the second test current is transmitted to the vehicle 200. [ At this time, in the process of transmitting the second test current to the vehicle 200 by the transmission coil 111, the control unit 140 repeats rising and falling in the Z-axis direction as shown in FIG. 7, (111).

More specifically, the control unit 140 controls the transmission coil 111 so that at least one of the test current of the magnetic resonance type and the test current of the magnetic induction type is transmitted to the vehicle 200, And moves the transmission coil 111 while repeating the descent.

The reason why the control unit 140 moves the transmission coil 111 while repeating rising and falling in the Z-axis direction is that the amount of induced current of at least one of the test current of the magnetic resonance type and the test current of the magnetic induction type This is to search coordinates of the position where the induced current amount is the largest. The control unit 140 controls at least one of the magnetic resonance type test current and the magnetic induction type test current by the search unit 120 in the process of transmitting the second test current to the vehicle 200 by the transmission coil 111 If the coordinates of the position having the largest induced current amount in the induced current amount of the current is found, the amount of induced current in the induced current amount of at least one of the test current of the magnetic resonance method and the test current of the self- And moves the transmitting coil 111 to the coordinates of the large position.

As a result, since the inherent suspension height of the vehicle 200 is different and the position of the current receiver 210 changes according to the driver's parking habit, the controller 140 controls the transmission coil of the current transmitter 110 111) is moved in the Z-axis direction to scan the position of the current receiving unit 210 of the constantly-moving vehicle 200 to move to the position where the amount of induced current is the largest, thereby minimizing the loss current and maintaining the best transmission efficiency . That is, the power loss of the magnetic resonance method can be minimized and the efficiency can be maximized.

That is, the controller 140 moves the current transmitter 110 to the coordinates of the X axis, the Y axis, and the Z axis detected by the search unit 120, and then, according to the type of the current determined by the search unit 120, Is transmitted to the current receiving unit 210 of the vehicle 200 to perform charging, so that the loss current can be minimized and the maximum charging effect can be expected.

In this embodiment, an X-axis slice rail, a Y-axis slice rail, and a Z-axis slice rail and a motor may be respectively installed to move the current transmitter 110 along the X axis, the Y axis, and the Z axis.

The current transmitter 110 and the current receiver 210 of the vehicle 200 are parallel to each other as shown in FIG. 8 (a) If the current receiving portions 210 of the current receiving portion 200 are not parallel and the number of the current receiving portions 210 is plural, 9, the induced magnetic loss can be prevented by rotating the R-axis rotary plate of the transmission coil 111 of the current transmission unit 110 to correct the R-axis angle value.

10A, when the current receiver 210 of the vehicle 200 is in the R-axis rotation plate, the main transmission coil 111a and the plurality of auxiliary transmission coils 111b are positioned on a straight line, the auxiliary transmission coil 111b is connected to the periphery of the main transmission coil 111a with the main transmission coil 111a as the center so that the main transmission coil 111a and the plurality of auxiliary transmission coils 111b can form a certain angle, It can be rotated along the circumference.

In this way, since the current transmitter 110 and the current receiver 210 are not parallel to each other when the vehicle 200 is stationary, the distance between the transmitting coil 111 of the current transmitting unit 110 and the receiving coil 211 of the current receiver 210 Since the current transmitter 110 can rotate by the R axis even if a corner angle occurs, charging can be performed at all angles.

The wireless charging device 100 may further include an organic magnetic reflective partition 150. The organic magnetic reflection plate 150 adjusts the amount of electrons induced in the reception coil 211 of the current receiver 210 to reduce the amount of current lost to a minimum, As shown in FIG.

The organic magnetic reflection plate 150 is implemented by a reflector metal (for example, silver, aluminum, magnesium or the like) which does not absorb electromagnetic waves or an alloy body using a reflector metal, And reflects an amount of electrons lost while being induced in the organic layer 211.

That is, since the organic magnetic reflective partition plate 150 does not absorb electromagnetic waves by adjusting the angle by adjusting the upward / downward gradient, the current transmitter 110 reflects electrons induced in the reception coil 211 of the current receiver 210 The amount of electrons lost during the induction to the receiving coil 211 of the current receiving unit 210 can be adjusted.

The organic magnetic reflective partition plate 150 is attached or not attached to the upper and lower portions of the film having good permeability so as to maintain a predetermined gap therebetween so that the current transmitting portion 110 is connected to the receiving coil 211 of the current receiving portion 210 The amount of electrons can be maximized and the charging time can be reduced. The shape of the organic magnetic reflection diaphragm may be circular, lattice, or spiral.

11 is a diagram for explaining a general magnetic induction method and loss electrons.

Referring to FIG. 11, the wireless charging system using the magnetic resonance method wirelessly charges by using the strong magnetic field coupling phenomenon formed between the air having the same resonance frequency.

A wireless charging system using such a magnetic resonance method includes a wireless charging device and a charging target device, and the wireless charging device includes a transmission coil 111 and a transmission source coil 112 to which electric power is applied, And a reception coil 211 and a reception source coil 212 to which the reception coil 212 is applied.

The transmission coil 111 of the wireless charging device and the transmission source coil 112 of the transmission source coil 112 connect the power source and the transmission coil 111 is close to the reception coil 211 of the device to be charged.

This is because the coil 112 of one of the two coils 111 and 112 of the wireless charging device is connected to the power source and the other one of the coils 111 is close to the receiving coil 211 of the charging target device Resonance frequency is set to resonance so that current flows.

As a result, the charging target device can be charged even when the gap between the wireless charging device and the charging target device is separated by a distance of several meters or more. Since unused energy is re-absorbed into the electromagnetic field, I do not affect the human body.

More specifically, the transmission source coil 112 of the wireless charging device converts the current into a high frequency signal and transmits it to the transmission coil 111 of the wireless charging device. Thus, a vibration current inside the transmission coil 111 of the wireless charging device forms a magnetic field in the coil so that electricity is induced to the reception coil 211 of the charging target device.

In the magnetic resonance method, the induction distance is 10 times or more as compared with the magnetic induction method by wireless charging by electromagnetic resonance, but the organic loss according to the induction distance in the electromagnetic induction process at a distance is also 10 times or more. In conclusion, the magnetic resonance method has a problem that electromagnetic induction loss is large when the induction distance is large. 12 is a diagram for explaining a wireless charging process according to an embodiment of the present invention. 13 is an exemplary view for explaining the configuration of the organic magnetic reflective partitioning plate of Fig.

8, 12 and 13, the wireless charging system includes a wireless charging device 100 and a vehicle 200. [ The current transmitter 110 of the wireless charging device 100 includes a transmission coil 111 and a transmission source coil 112 and the current receiver 210 of the vehicle 200 is connected to the reception coil 211 and the reception source coil 212).

The transmission coil 111 of the wireless charging device and the transmission source coil 112 of the transmission source coil 112 connect the power source and the transmission coil 111 is close to the reception coil 211 of the device to be charged.

This is because resonance is generated by connecting the transmission source coil 112 of the wireless charging device to the power source and matching the transmission coil 111 to the reception coil 211 of the charging target device to the same resonance frequency, .

Accordingly, the current can be charged to the receiving coil 211 of the current receiving unit 210 even when the gap between the current transmitting unit 110 and the current receiving unit 210 is spaced apart by several m or more.

The transmission coil 111 of the current transmission unit 110 of the vehicle 200 converts the current into a high frequency and outputs the radio frequency to the reception coil 211 of the current reception unit 210 send. The oscillation current inside the transmission coil 111 of the current transmitter 110 of the wireless charging device 100 is generated by the magnetic field generated by the coil so that the reception coil 211 of the current receiver 210 of the charging target device .

At this time, the wireless charging device 100 can adjust the amount of electrons induced to the reception coil 211 of the current receiving unit 210 by using the organic magnetic reflection partition plate 150. That is, the organic magnetic reflective partition plate 150 adjusts the amount of electrons emitted from the transmission coil 111 of the current transmitter 110 to the reception coil 211 of the current receiver 210, The maximum effective current can be supplied to the transmitting coil 111 of the current transmitting unit 110 through the diaphragm 150.

As a result, when the induction magnet is sent from the transmission coil 111 of the current transmitter 110 to the reception coil 211 of the current receiver 210, the induced magnetism is 60% to 60%, and 40% to 35% is lost . As described above, the present invention uses the organic magnetic reflective partition plate 150 to reduce the loss induction magnetism.

The organic magnetic reflective partition plate 150 may be formed of a reflector metal (for example, silver, aluminum, magnesium, or the like) that does not absorb electromagnetic waves or an alloy body using a reflector metal, And reflects an amount of electrons lost by the receiving coil 211 of the current receiving unit 210. That is, since the organic magnetic reflective partition plate 150 does not absorb the electromagnetic wave by adjusting the angle by adjusting the upward / downward gradient, the transmission coil 111 of the current transmitting unit 110 is connected to the receiving coil 211 of the current receiving unit 210 The amount of electrons induced in the receiving coil 211 of the current receiving unit 210 can be adjusted by reflecting the lost electrons to the receiving coil.

The organic magnetic reflective partition plate 150 may be formed by attaching or not attaching a highly transparent film sheet to the upper and lower portions of the current receiving portion 210 in the transmission coil 111 of the current transmitting portion 110, The amount of electrons induced in the receiving coil 211 can be maximized to reduce the charging time. The shape of the organic magnetic reflection partition 150 may be circular, as shown in FIG. 13 (a), a lattice as shown in FIG. 13 (b), or a spiral as shown in FIG. 13 (c).

FIG. 14 is a view showing an example of a configuration in which a wireless charging device according to an embodiment of the present invention is applied to a plurality of parking surfaces.

Referring to FIG. 14, current transmission units 110A, 110B, 110C and 110D of the wireless charging device 100 may be installed on a plurality of parking surfaces provided for wireless charging of the vehicle, respectively. For example, in the electric charging station, 'first to fourth parking faces' are provided so that the vehicle can park as shown in FIG. 14, and on the respective parking faces, And fourth current transmission units 110A, 110B, 110C, and 110D, respectively.

Here, the control unit 140 may sequentially control the first to fourth current transmission units 110A, 110B, 110C, and 110D so that wireless charging may be performed according to the parking order on each parking surface. For example, when the first vehicle 200A is parked first on the first parking surface and the second vehicle 200B is parked on the fourth parking surface at a later time, the control unit 140 controls the parking After the first current transmitter 110A is controlled so that the wireless charging for the first vehicle 200A is preferentially performed, wireless charging for the second vehicle 200D parked on the fourth parking space is completed The fourth current transmission section 100D can be controlled so that the second current transmission section 100D is controlled. To this end, the first to fourth current transmission units 110A, 110B, 110C, and 110D may set the parking order together with whether the vehicle has parked on each parking surface using the proximity sensor.

For example, the first proximity sensor 113A is provided in the first current transmission unit 110A, the second proximity sensor 113B is provided in the second current transmission unit 110B, and the second proximity sensor 113B is provided in the third current transmission unit 110C. The fourth proximity sensor 113D may be installed on the fourth current transmission unit 110D and the first vehicle 200A may be parked first on the first parking surface, The controller 140 receives the sensing signal from the first proximity sensor 113A and receives the sensing signal from the fourth proximity sensor 113D after the sensing signal is received from the first proximity sensor 113A. Accordingly, the control unit 140 sets the charging order on the first parking surface to be the first order based on the first proximity sensor 113A that first transmitted the sensing signal, and the fourth proximity sensor 113A, The charging order for the fourth parking surface can be set to the second order based on the first parking position 113D. At this time, since the vehicle is not parked on the second and third parking faces, the control for the second and third current transmission units 110B and 110C is not performed, but thereafter the vehicle is parked on the second or third parking face The charging order for the corresponding parking surface can be set to the third order.

Also, the control unit 140 can selectively control the first to fourth current transmission units 110A, 110B, 110C, and 110D by identifying the presence or absence of electrical charging of the parked vehicle on each parking surface. More specifically, when the vehicles are sequentially parked on the first and fourth parking faces and the charging order is set in the order of the first and fourth parking faces, the controller 140 controls the first and fourth parking faces The first or second test current is transmitted to the corresponding vehicle through the first and second current transmission units 110A and 110D and the induction current generated according to the first or second test current is detected to identify whether or not the vehicle can be recharged. For example, when the first vehicle 200A parked on the first parking surface is a wirelessly chargeable electric vehicle and the second vehicle 200D parked on the fourth parking surface is a general gasoline or diesel vehicle, It is possible to determine whether the vehicle is a vehicle that needs to be charged according to the presence or absence of detection of the induction current, and to omit wireless charging for a vehicle that does not require charging. In this case, even if the wireless charging order is set in the order of the first parking face and the fourth parking face, the wireless charging order for the second vehicle 200D parked on the fourth parking face is excluded, and the order Can be set.

15 is a view showing an example different from the configuration in which the wireless charging device according to the embodiment of the present invention is applied to a plurality of parking surfaces.

15, the current transmitter 110 of the wireless charging device 100 is installed on a plurality of parking surfaces provided for wireless charging of a vehicle, and is movable through a transfer rail 114 installed along each parking surface . For example, in the electric charging station, 'first to fourth parking faces' are provided so that the vehicle can park as shown in FIG. 15, the conveying rails 114 can be installed on the respective parking faces, The transmission coil 111 of the transmission unit 110 can be freely moved between the first to fourth parking planes along the feed rail 114. [

On the other hand, the first to fourth proximity sensors 113A, 113B, 113C and 113D are respectively installed on the 'first to fourth parking faces' An order can be set. In this case, the control unit 140 may control the charging coil to be charged by feeding the coil 111 of the current transmitter 110 to the corresponding parking surface in accordance with the set wireless charging order.

The feed rail 114 may be configured to extend a rail for moving the transmission coil 111 of the current transmitter 110 in the X axis direction on each of the parking planes as described above, It is possible to change the specific configuration of the transmission coil 111 as long as it can freely transfer the transmission coil 111 to each parking surface.

14, the control unit 140 identifies whether the vehicle is parked on each parking surface according to the presence or absence of the induced current detection using the test current, Wireless charging can be controlled. That is, it is possible to determine whether the vehicle is a vehicle requiring charging according to whether or not the induction current is detected using the test current, thereby omitting the wireless charging for the vehicle which does not require charging.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the scope of the appended claims and equivalents thereof.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, Modification is possible. Accordingly, the spirit of the present invention should be understood only in accordance with the following claims, and all equivalents or equivalent variations thereof are included in the scope of the present invention.

100: wireless charging device 110: current transmitter
111: transmitting coil 111a: main transmitting coil
111b: auxiliary transmission coil 112: transmission source coil
113A, 113B, 113C, 113D: proximity sensor 114: feed rail
120: Search unit 130: Wireless communication unit
140: control unit 150: organic magnetic reflection diaphragm
200: vehicle 210: current receiver
211: receiving coil 212: receiving source coil
220 terminal device 300 accumulator

Claims (10)

A current transmitter for transmitting to the vehicle any one of a first test current, a second test current, and a charge current according to a current control command;
Searching for and providing a first coordinate of a position where the amount of induced current of the first test current is the largest in the process of transmitting the first test current to the vehicle, A retrieval unit for retrieving and providing a second coordinate of a position where the induced current amount of the second test current is largest; And
The control unit controls the current transmitter to transmit the first test current to the vehicle after moving the current transmitter to coordinates of a position spaced a specific distance from the vehicle when the vehicle is positioned within the wireless charging section, Controls the current transmitter to transmit the second test current to the vehicle after moving the current transmitter to a first coordinate of a position where the induced current amount of the first test current is the largest detected by the search unit, And a controller for controlling the current transmitter to provide the charging current by moving the current transmitter to a second coordinate of a position where the induced current amount of the second test current is the largest.
The method according to claim 1,
The control unit
Controlling the current transmitter to transmit the first test current to the current receiver of the vehicle, and moving the current transmitter along the X-axis and Y-axis directions in the process of transmitting the first test current to the current receiver of the vehicle And,
The search unit may search,
Wherein the X-axis and Y-axis coordinates of the position where the amount of induced current of the first test current is the largest are searched in the process of moving the current transmitter along the X-axis and the Y-axis.
3. The method of claim 2,
Wherein,
Controls the current transmitter to transmit the second test current to the current receiver of the vehicle at the position of the X-axis and Y-axis coordinates retrieved through the search unit, and the second test current is transmitted to the current receiver of the vehicle The current transmitter is moved up and down along the Z axis direction,
The search unit may search,
Wherein the current transmitter moves a coordinate on the Z axis and searches a Z axis coordinate of a position where the induced current amount of the second test current is the largest,
Wherein the second test current comprises a test current in a magnetic resonance manner.
The method according to claim 1,
The current transmitter includes:
A main transmission coil; And
And a plurality of auxiliary transmission coils disposed around the periphery of the main transmission coil about the main transmission coil,
Wherein,
And rotates the auxiliary transmission coil about the periphery of the main transmission coil about the main transmission coil.
The method according to claim 1,
Wherein,
When the vehicle is located in a predetermined section, the vehicle is connected to the driver's portable terminal through the wireless network, receives the electric vehicle information, the user's charging request amount and driver information from the portable terminal, and completes charging according to the user charging amount The portable terminal requests approval from the user, and proceeds with the payment according to the approval result of the user.
The method according to claim 1,
Wherein,
An amount of electrons induced from the current transmitter to the current receiver of the vehicle is adjusted using an organic magnetic reflection plate,
Wherein the organic magnetic reflective partition is embodied as a reflector metal that does not absorb electromagnetic waves or an alloy body that uses the reflector metal.
The method according to claim 1,
The current transmitter includes:
A plurality of parking surfaces provided for wireless charging of the vehicle,
Wherein,
Sequentially controlling the current transmitter so that the vehicle is wirelessly charged according to the order of parking on the parking surface,
Wherein the control unit identifies the presence or absence of electrical charging of the parked vehicle on the parking surface, and selectively controls the wireless charging through the current transmitting unit.
The method according to claim 1,
The current transmitter includes:
A plurality of parking rails provided on a plurality of parking surfaces provided for wireless charging of the vehicle,
Wherein,
Sequentially controlling the current transmitter so that the vehicle is wirelessly charged according to the order of parking on the parking surface,
Wherein the control unit identifies the presence or absence of electrical charging of the parked vehicle on the parking surface, and selectively controls the wireless charging through the current transmitting unit.
9. The method according to claim 7 or 8,
Wherein,
Setting a parking order on the parking surface using a proximity sensor installed in each of the current transmission units,
Wherein the controller detects an induced current caused by at least one of the first test current and the second test current applied through the current transmitter to identify whether the vehicle is parked on the parking surface. device.
A method for wireless charging a vehicle using a wireless charging device,
The current transmitter of the wireless charging device transmitting a first test current to the vehicle if the vehicle is located on a parking surface for wireless charging;
The controller of the wireless charging device moves the current transmitter along the X axis and the Y axis to search for a first coordinate of a position where the induced current amount of the first test current is the largest;
Transmitting the second test current to the vehicle at the point of the first coordinate;
Searching the second coordinates of a position where the amount of induced current of the second test current is the largest while moving the current transmitter along the Z axis; And
And the current transmitter transmits a charging current to the vehicle at a point of the first coordinate and the second coordinate to charge the vehicle

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