WO2022197083A1 - Fixed/moving wireless power feeding pad, and wireless power collecting pad and regulator which can be mounted in any space of vehicle - Google Patents

Abstract

The present invention relates to a fixed/moving wireless power feeding pad, and a wireless power collecting pad and a regulator which can be mounted in any space of a vehicle. According to the present invention, when a wireless power feeding pad is usually positioned on the back side of a location where a vehicle is parked, the use rate of parking spaces for existing vehicles and electric vehicles can be increased, and by not fixing a charging location to a specific location, even if the vehicle is parked in an arbitrary location, the vehicle can be flexibly charged by moving the wireless power feeding pad.

Description

Fixed/mobile wireless power feeding pad and wireless power collecting pad and regulator that can be installed in any space of the vehicle

The present invention relates to a fixed/mobile wireless power supply pad and a wireless current collecting pad and regulator that can be installed in any space of a vehicle, and more particularly, to a stationary in a parking lot vehicle stopper or under a vehicle stopper when wireless charging while stationary. A wireless power supply pad that can be installed or moved, installed or fixed at the back of a parking lot, and a wireless power collecting pad that can be installed in various spaces such as the front, center, and rear parts of the vehicle as well as trunk doors, front and rear doors, front and rear bumpers, and roofs; it's about the regulator

Conventional electric vehicles are designed and developed so that only wired charging is possible. In order to receive wireless charging from a wireless power supply pad installed on the ground, a space to install a wireless power collecting pad that maintains an air gap from the wireless power pad is created. It is a situation that frequently occurs when the vehicle is not secured. In addition, as the battery capacity of an electric vehicle increases, it is also becoming more difficult to install a large-capacity current collector, which is also enlarged, under the vehicle.

In addition, the wireless power supply pad installed under the road, which has been proposed in the past, is very expensive and difficult to install, and once installed, the wireless charging slot in the parking lot is fixed, There was a problem in that it could not respond flexibly, and could not provide effective charging for many vehicles that want to be wirelessly charged.

The present invention was devised to solve such a problem, and by installing the wireless power supply pad fixedly in or under the parking lot vehicle stopper, fixing it on the back of the parking lot, or disposing it in a movable state, the installation work of the wireless power supply pad The purpose is to significantly reduce the cost and maintenance cost. In addition, when the wireless feed pad is built into, installed under the vehicle detent, or installed so that it can be moved forward or rearward between the detents or next to the detent, it is attached to the wireless feed pad and the lower front or rear part of the vehicle. It is easy to align the alignment of the wireless current collecting pad, which can increase capacity and efficiency. In addition, by not fixing the charging position to a specific position, even if it is parked at an arbitrary position, charging can be flexibly performed by moving the wireless power supply pad. In addition, by installing a camera on the detent or the inverter itself or near the inverter, the purpose is to solve the heat problem when there is metal on the power supply pad, the safety problem when living things enter, and the power supply alignment problem of the charging vehicle. have.

In addition, in the case of the wireless power collecting pad, the wireless power collecting pad can be installed on the trunk door, trunk floor, front and rear bumpers, front and rear doors, and roof as well as the front, center, and second half of the lower part of the existing wired charging electric vehicle, so that charging convenience for electric vehicles is improved. Another objective is to solve the problem of wireless charging of electric vehicles and contribute to the spread of electric vehicles by improving the safety of avoiding damage caused by road bumps and charging compatibility for various electric vehicles.

In order to achieve the above object, the fixed wireless power feeding pad according to the present invention includes a multi-turn power feeding coil through which a current supplied from an inverter flows (hereinafter referred to as a 'feeding coil'); a ferrite core provided on the bottom or bottom and side surfaces of the feeding coil to direct power transmission by magnetic field to the wireless current collecting pad; vehicle detents protruding above the ground (hereinafter referred to as 'stops'); And, by estimating the location of the wireless current collecting pad based on the amount of change in the load of each feeding coil, selecting one or more specific feeding coils among a plurality of feeding coils or adjusting the current phase of each feeding coil to form a magnetic field beam a control unit, wherein the feeding coil and the ferrite core are built into the stopper, or installed on or around the lower portion of the stopper, or in connection with the stopper. Installed in a slidable structure. .

The fixed wireless power feeding pad may further include a spacing adjusting device installed for each charging and parking slot to minimize the distance between the wireless power feeding pad and the wireless power collecting pad.

The spacing adjusting device may include a direct current or alternating current power source; an electromagnet driven by the power source; and a feeding coil position adjusting unit for moving the position of the feeding coil to be closer to the current collecting coil by driving the electromagnet, wherein the feeding coil position adjusting unit includes an iron or permanent located on one side or both sides of the magnetic pole of the electromagnet. A magnet may be provided.

The spacing adjusting device may include an elastic part for moving the power feeding coil from the lower end of the power feeding coil to be closer to the current collecting coil at the upper side.

The spacing adjusting device includes: a protrusion protruding from the slope of the stopper; and an arm having one end connected to the protrusion and the other end connected to the power supply coil support, wherein the protrusion is pushed into the stopper when pressure of a vehicle wheel is applied to the arm. and pushes up the feed coil support part by the arm, so that the feed coil support part pushes up the feed coil at its upper end.

The fixed wireless feeding pad may include a capacitor for LC resonance inside the stopper.

The fixed wireless power feeding pad may include a capacitor for LC resonance under the detent or under the ground surface around the detent.

* The stopper may have at least one of a '-' shape, a '┐' shape, a '┌' shape, a '+' shape, a 'T' shape, and a 'ㅗ' shape.

When the detent is the '-' shape, the detent may be a detent (hereinafter referred to as an 'integrated detent') in a straight line from the contact portion of the left wheel of the vehicle to the contact portion of the right wheel.

When the detent has the '-' shape, the detent may be a detent (hereinafter referred to as a 'separable detent') in which the left wheel contact part and the right wheel contact part are separated.

The '┐'-shaped detent and the '┌'-shaped detent include a pair of a '┐'-shaped detent and a '┌'-shaped detent, or a single '┐'-shaped detent, or '┌' It may consist of a single shaped detent.

The feeding coil may form a plurality of multi-turn coil loops or one multi-turn coil loop.

It may further include one or more cameras or one or more sensors for determining whether a metal is present on the feeding pad, whether a living organism enters the feeding area, or an alignment for charging the charging vehicle.

The camera or sensor is mounted on the stopper when the inverter is provided integrally with the fixed wireless power supply pad, and is mounted on the stopper when the inverter is provided separately from the fixed wireless feed pad, Alternatively, it may be mounted on or around the inverter.

The fixed wireless feeding pad may further include an inverter for supplying current to the feeding coil, wherein the inverter is integrally formed with the feeding coil and the ferrite core. It may be provided separately from the feed coil, the ferrite core and the stopper.

When the power supply coil and the ferrite core are installed to be slidable in connection with the detent, when the wheel of the vehicle comes into contact with the detent, the power supply coil and the ferrite core are matched to the wireless current collecting pad of the vehicle. , can be controlled to slide forward or backward.

According to another aspect of the present invention, the mobile wireless power feeding pad includes a plurality of multi-turn power feeding coils (hereinafter referred to as 'feeding coils') through which current supplied from the inverter flows; a ferrite core provided on the bottom surface, or bottom and side surfaces of the plurality of feeding coils to direct power transmission by a magnetic field to a wireless current collecting pad; a control unit configured to select a multi-coil by estimating a position of a wireless current collecting pad based on a load variation of each power supply coil or to form a magnetic field beam by adjusting a current phase of each multi-coil; and a transfer device for moving the feed coil and the ferrite core.

The transfer device transfers the movable wireless power feeding pad to the position where the wireless power collecting pad is located, front, rear, left, right, or the upper or lower part of the vehicle, and converts it horizontally or vertically so as to be parallel to the wireless power collecting device. Sorting function can be performed.

The mobile wireless feeding pad may further include one or more cameras or one or more sensors for determining whether a metal is present on the feeding pad, whether a living organism enters the feeding area, or an alignment for charging a charging vehicle.

The camera or sensor is provided on the mobile wireless power feeding pad when the inverter is integrated with the mobile wireless power feeding pad, or around the inverter or the inverter when the inverter is provided separately from the mobile wireless power feeding pad Alternatively, it may be mounted inside a mobile wireless feeding pad.

The mobile wireless feeding pad may further include an inverter for supplying current to the feeding coil, wherein the inverter may be provided integrally with the feeding coil and the ferrite core, or provided separately from the feeding coil and the ferrite core. can

According to another aspect of the present invention, the wireless current collecting pad is provided on the upper surface, or upper and side surfaces of a plurality of multi-turn current collecting coils (hereinafter referred to as 'collecting coil'), and is transmitted from the wireless power collecting pad. a ferrite core serving to effectively receive a magnetic field; a plurality of current collecting coils through which an induced current by the power received from the wireless feeding pad flows; and a control unit configured to select a multi-coil by estimating the position of the wireless power feeding pad based on a voltage or current value induced in each current collecting coil or to form a receiving magnetic field beam by adjusting the current phase of each multi-coil.

The wireless current collecting pad may further include a detachable unit detachable at one or more positions of front and rear bumpers, left and right doors, a trunk door, a front/middle/rear portion of the vehicle lower portion, and a roof of the vehicle.

According to the present invention, the cost of installing the wireless power feeding pad and the maintenance cost can be significantly reduced by installing the wireless power feeding pad in the stopping sill of the parking vehicle, installing it under, or disposing it in a movable state without being fixedly installed. there is an effect In addition, when the wireless feed pad is built into, installed under the vehicle detent, or installed so that it can be moved forward or rearward between the detents or next to the detent, it is attached to the wireless feed pad and the lower front or rear part of the vehicle. It is easy to align the alignment of the wireless current collecting pad, which can increase capacity and efficiency. In addition, by not fixing the charging position to a specific position, even if it is parked at an arbitrary position, charging can be flexibly performed by moving the wireless power supply pad. In addition, by installing a camera on the stopper or the inverter itself or near the inverter, it is effective in solving the heat problem when there is metal on the power supply pad, the safety problem when living things enter, and the power supply alignment problem of the charging vehicle. .

In addition, in the case of the wireless power collecting pad, the wireless power collecting pad can be installed on the trunk door, trunk floor, front and rear bumper, front and rear doors or roof as well as the lower front, center, and second half of existing electric vehicles, so that charging convenience for electric vehicles and road bumps is possible. By improving safety and charging compatibility for various electric vehicles by avoiding damage caused by electric vehicles, there is an effect of solving the problem of wireless charging of electric vehicles and further contributing to the spread of electric vehicles.

1 is a conceptual diagram of charging an electric vehicle in a wireless charging method using a fixed/mobile wireless power supply pad and a wireless current collecting pad that can be installed in any space of the vehicle.

2 is a conceptual diagram of automatic alignment and wireless charging by a wireless power supply pad embedded in a vehicle stopper or installed under the vehicle stopper and a wireless power collecting pad installed in the first half or second half of the vehicle lower part.

3 is a block diagram of a fixed/movable wireless feeding pad of the present invention.

4 is a configuration diagram of a built-in wireless power feeding pad installed so that a power feeding coil and a ferrite core are embedded in a vehicle stopper;

5 is a configuration diagram of a lower-type wireless power feeding pad in which a feeding coil and a ferrite core are installed under a vehicle stopper;

6 is a configuration diagram of a built-in built-in wireless power feeding pad with a capacitor.

7 is a configuration diagram of a built-in/stair-type wireless feeding pad.

8 is a configuration diagram of a capacitor-integrated built-in/stair-type wireless power supply pad.

9 is a configuration diagram of a wireless power feeding pad having a power feeding coil forming one loop over the entire vehicle stopper;

FIG. 10 is a view showing an embodiment when the wireless power feeding pad is installed in a form that can be matched with the wireless power collecting pad by sliding forward or backward by detecting a detent contact; FIG.

11 is a configuration diagram of a wireless current collecting pad that can be mounted in an arbitrary space of a vehicle.

12 is a view illustrating embodiments of an apparatus for adjusting a separation distance between a wireless power feeding pad and a wireless power collecting pad using a vehicle stopper;

13 is a diagram illustrating other embodiments of an apparatus for adjusting a separation distance between a wireless power feeding pad and a wireless power collecting pad using a vehicle stopper;

14 is a diagram illustrating another embodiment of an apparatus for adjusting a separation distance between a wireless power feeding pad and a wireless power collecting pad using a vehicle stopper;

FIG. 15 is a diagram illustrating another embodiment of an apparatus for adjusting a separation distance between a wireless power feeding pad and a wireless power collecting pad using a vehicle stopper; FIG.

16 is a view showing an embodiment in which a wireless current collecting pad is installed at the rear of a vehicle;

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, the terms or words used in the present specification and claims should not be construed as being limited to conventional or dictionary meanings, and the inventor should properly understand the concept of the term in order to best describe his invention. Based on the principle that it can be defined, it should be interpreted as meaning and concept consistent with the technical idea of the present invention. Therefore, the embodiments described in this specification and the configurations shown in the drawings are only the most preferred embodiment of the present invention and do not represent all the technical spirit of the present invention, so at the time of the present application, various It should be understood that there may be equivalents and variations.

1 is a conceptual diagram of charging an electric vehicle 20 in a wireless charging method using fixed/mobile wireless power feeding pads 100 and 200 and a wireless power collecting pad that can be installed in any space of the vehicle.

The fixed wireless power supply pad 100 is connected to the inverter 10 and is fixed to the rear of the parking, so that when the front of the electric vehicle is parked, it is possible to charge the lower part of the front through the front or vertical and horizontal conversion, and when the rear is parked, the rear or vertical horizontal conversion is possible. It is possible to charge the lower part of the back through the In this case, the distance between the wireless power feeding pad 100 and the wireless power collecting pad is reduced or closely adhered to improve capacity efficiency and block EMI and EMF.

To this end, the fixed wireless feeding pad 100 is a plurality of multi-turn power feeding coils (hereinafter referred to as 'feeding coils') through which the current supplied from the inverter flows, the bottom of the feeding coil, or the bottom and side surfaces. It is provided with a ferrite core that serves to direct power transfer by magnetic field to the wireless current collecting pad, and estimates the location of the wireless current collecting pad based on the amount of change in the load of each power supply coil, thereby estimating a specific power supply of one or more of the plurality of power supply coils. and a control unit for selecting a coil or adjusting a current phase of each power supply coil to form a magnetic field beam.

The mobile wireless feeding pad 200 is connected to the inverter 10 and is fixed or can be moved automatically or manually. The mobile wireless feeding pad 200 is a plurality of multi-turn power feeding coils (hereinafter referred to as 'feeding coils') through which the current supplied from the inverter flows, the bottom of the plurality of feeding coils, or the bottom and side surfaces. A ferrite core that serves to direct the power transfer by magnetic field to the wireless current collecting pad, and estimating the location of the wireless current collecting pad based on the amount of change in the load of each power supply coil to select a multi-coil or to select a multi-coil current A control unit for forming a magnetic field beam by adjusting the phase; and a transfer device for moving the feed coil and the ferrite core.

This transfer device transfers the mobile wireless power feeding pad 200 according to the position of the wireless current collecting pad attached to the vehicle so that the power feeding coil and the ferrite core are aligned for charging to the corresponding wireless current collecting pad, that is, for this purpose It performs the function of moving the vehicle forward, backward, left, right, top, and bottom and aligning it with the wireless current collector by vertically and horizontally switching.

That is, for example, when the wireless power collecting pad is installed under the vehicle, the movable wireless power feeding pad 200 can be moved to the lower part of the vehicle. When the wireless power collecting pad is installed on the ceiling of the vehicle, a device such as a lift is provided Movement to the top of the vehicle is also possible.

Furthermore, when the wireless power collecting pad is mounted side by side on the side door of the vehicle, or it is mounted on the front and rear bumpers, trunk doors, or the top surface, the mobile wireless power feeding device 200 moves to the corresponding position, and the wireless current collector You can also perform posture changes in parallel with

For example, when the wireless power collecting pad is mounted side by side on the side door of the vehicle as described above, if the mobile wireless power feeding pad 200 has a flat shape parallel to the ground, the mobile wireless power feeding pad moves to the corresponding side, Charging may be performed after changing the posture vertically so that it is parallel to the corresponding wireless current collecting pad.

Alternatively, when the wireless power collecting pad is mounted flat on the lower part of the vehicle, if the mobile wireless power feeding pad 200 is vertically erected on the ground, the mobile wireless power feeding pad 200 moves to the lower part of the vehicle, It can also be charged after changing the posture horizontally so that it is parallel to the pad.

At this time, the distance between the wireless power feeding pad 200 and the wireless power collecting pad is reduced or closely adhered to improve capacity efficiency and block EMI and EMF.

The wireless current collecting pad is provided on, or on the upper and side surfaces of, a plurality of multi-turn current collecting coils (hereinafter referred to as 'collecting coil') to effectively receive the magnetic field transmitted from the wireless power collecting pad. a ferrite core, a plurality of current collecting coils through which an induced current by the power received from the wireless feeding pad flows; and a control unit configured to select a multi-coil by estimating the position of the wireless power feeding pad based on a voltage or current value induced in each current collecting coil or to form a receiving magnetic field beam by adjusting the current phase of each multi-coil.

2 is a conceptual diagram of automatic alignment and wireless charging using a wireless power supply pad built into the vehicle detent or installed under the vehicle detent and a wireless power collecting pad installed in the first or second half of the vehicle.

Since the wireless feed pad is built inside or under the vehicle's detent and the wireless power collecting pad is installed in the lower half of the vehicle, if you reverse the vehicle from the parking lot and park it in close contact with the vehicle's detent, regardless of the type of vehicle, the wireless feed pad and It shows that the wireless power collecting pad is automatically aligned well, eliminating the problem of alignment between the existing power feeding pad and the current collecting pad, and wireless charging can be done well. Even if the wireless power collecting pad is installed in the first half of the lower part of the vehicle, if it is parked properly in close contact with the vehicle's stopper, the wireless power feeding pad and the wireless power collecting pad are automatically aligned and wireless charging can be performed well.

2 is a view showing an embodiment of a form (hereinafter referred to as a 'separate type') in which the vehicle stopper is formed to be caught on each of the left and right wheels of the vehicle. In addition to this, a form in which the vehicle detents are not separated and formed as one from the left wheel to the right wheel (hereinafter referred to as an 'integrated type') is also possible, and the shape of each detent is also possible. Examples of various types of such a vehicle stopper will be described later with reference to FIGS. 4 to 8 .

The feeding coil may be provided to be built-in inside such a stopper (hereinafter referred to as 'built-in type'), or it may be provided under the ground below the stopper or around the bottom of the ground below the stopper (hereinafter referred to as a 'lower type'), so that This will be described later by comparing FIGS. 4 and 5 .

The ferrite core, in the case of the built-in type as shown in FIG. 4 , may be attached to the inside of the stopper 400 or formed at a distance from the stopper 400 on the inside of the stopper 400 , the lower part as shown in FIG. In the case of the mold, it may be formed under the ground 30 as shown.

Furthermore, even in the form of a feeding coil, a plurality of circular multi-turn coils may be disposed adjacent to each other, and this embodiment is shown in FIGS. 3 to 8 . Alternatively, a multi-turn type in which the feeding coil forms one loop over the entire stopper is also possible, which will be described later with reference to FIG. 9 .

Figure 3 is a block diagram of the fixed type 100 / movable type 200 wireless power feeding pad of the present invention.

As shown, the fixed/movable wireless feeding pad may include a plurality of feeding coils (referred to as 110 and 210). In addition, as shown, the ferrite cores 120 and 220 are provided on the back and side surfaces so that the wireless power supplied to the wireless current collecting pad is directed to the front, and EMI and EMF are prevented from being radiated to the outside.

The plurality of feeding coils 110 and 210 may be configured as a single layer, as shown in FIG. 3, or may be configured as an overlapping layer.

When the wireless power collecting pad of the vehicle is installed flat on the ground under the vehicle or the like, the movable wireless power feeding pad 200 may be converted horizontally as described above so that the ferrite core faces downward.

In addition, as described above, the mobile wireless power feeding pad 200 is automatically or manually moved to the position where the wireless current collecting pad is located, forward, rearward, left, right, or the upper and lower parts of the vehicle, and is parallel to the wireless current collecting device. It can be switched horizontally or vertically, automatically or manually to align.

Based on the amount of change in the load of the plurality of feeding coils 110 and 210 of the fixed/mobile wireless feeding pad having such a structure, the spatial position of the wireless power collecting pad of the vehicle 20 is estimated, and a specific feeding coil of the wireless feeding pad is selected or By adjusting the phase value of the current flowing in the feeding coil of each wireless feeding pad, the magnetic field beam of the fixed/moving wireless feeding pad is accurately directed to the wireless power collecting pad, improving power efficiency, and reducing the amount of EMI and EMF radiation.

4 is a configuration diagram of a built-in wireless feeding pad installed so that a feeding coil and a ferrite core are embedded in the vehicle stopper 400, and FIG. 5 is a configuration of a lower type wireless feeding pad installed with a feeding coil and a ferrite core under the vehicle stopper. it is do

In the drawings after FIG. 4 , the multi-turn power feeding coil or current collecting coil as shown in FIG. 3 is illustrated as a single circle for convenience.

4 to 8, among the various shapes of the vehicle stopper 400, '-', '┐', '┌', '+', and 'T' shapes are shown. In addition to this, although not shown, a 'ㅗ'-shaped stopper is also possible. Unlike the 'T' shape in which the central part protrudes backward, the 'ㅗ' shape indicates a shape in which the central part protrudes forward. A single feed coil or multiple feed coils are built into the vehicle stopper 400 (FIG. 4) or installed in the lower part of the stopper 400, that is, under the ground (FIG. 5), if possible, the gap between the feed coil and the current collector coil This is made small or, if necessary, the number of turns of the feeding coil of the wireless feeding pad is maximized within the possible range In the built-in wireless feeding pad of Fig. 4, the feeding coil is shown on the upper surface of the stopper 400 for convenience, but in reality It is located inside the stopper 400. At this time, the ferrite core 120 is used on the bottom, or the bottom and side surfaces of the power supply coil 110 so that the magnetic field is directed upward with the current collecting coil of the vehicle, and EMI and EMF are released to the outside. block radiation.

In the built-in wireless feeding pad as shown in FIG. 4 , when the ferrite core 120 is used on the side surface of the feeding coil 110 , the ferrite core is in close contact with the inner side of the stopper 400 , or the inner side of the side of the stopper 400 . It can be installed at some distance from the

Even in the lower type wireless power feeding pad 100 as shown in FIG. 5 , the ferrite core is used on the underside, or the bottom and side surfaces of the power feeding coil 110 so that the magnetic field is directed upward with the current collecting coil of the vehicle. In this case, in both cases where the ferrite core 120 is used for the underside, or the bottom and side surfaces of the feeding coil 110 , the ferrite core is installed below the ground. In particular, the wireless power supply pad installed under the detent of the vehicle is made larger than the wireless power supply pad with a built-in detent to facilitate alignment and allow wider front and rear, left and right deviations.

The feeding coil 110 of the lower-type wireless power feeding pad may be installed only under the lower portion of the vehicle stopper 400, or as shown in FIG. 5, the lower portion of the vehicle stopper 400 and the stopper 400 ) may be installed so as to span a little on the periphery, or may be configured to be additionally installed in the lower portion of the vehicle stopper 400 and the lower portion around the stopper 400 .

Even in the case of a wireless current collecting pad installed in a vehicle, a plurality of multi-turn current collecting coils (hereinafter referred to as a 'collecting coil') are provided, and are provided on the upper surface of the collecting coil, or on the upper and side surfaces of the lower wireless power collecting coil. It has a ferrite core that serves to effectively receive the magnetic field transmitted from the feeding pad.

In addition, the built-in wireless feeding pad or lower wireless feeding pad 100 uses a material that is not damaged even by a significant impact, and performs a function of stopping the car and aligning the wireless feeding pad 100 and the wireless power collecting pad 300 well. Detachable or integrated detents can be designed to do this.

That is, in each of FIGS. 4 and 5 , (a) and (b) show an 'integrated' detent connected in a line from the left wheel contact portion to the right wheel contact portion of the vehicle when the vehicle enters, but the left wheel contact portion and the right It may be configured in the form of a detent in which the wheel contact portion is separated. Such a 'removable' detent is shown in FIG. 2 . 2 shows a 'separate type' shape of the stopper in the form of FIGS. 4 and 5 (a), and the stopper in the form of FIGS. 4 and 5 (b) may also be configured as a detachable type in this way.

In addition, in FIGS. 4 and 5 (c) and (d) are provided as a pair, for example, (c) is a left wheel, (d) can be configured to act as a stopper for the right wheel. Alternatively, (c) or (d) alone may constitute the stopper, and in each case, the horizontal or vertical length may be appropriately determined and configured.

The built-in wireless power feeding pad and the lower type wireless feeding pad 100 estimate the spatial location of the wireless power collecting pad 300 of the vehicle based on the load change amount of the plurality of power feeding coils 110 to select the required feeding coils or feed each power supply. By adjusting the phase value of the current flowing through the coil 110, the magnetic field beam of the wireless power feeding pad 100 accurately directs the wireless current collecting pad 300 to increase capacity and efficiency and reduce EMI and EMF radiation.

6 is a configuration diagram of a capacitor-integrated built-in wireless power supply pad.

The feeding capacitor 140 is used for LC resonance. In the case of allowing a detent having a relatively larger size than that of an existing vehicle detent, an integrated module in which the feed capacitor 140 is attached to the built-in wireless feed pad as shown in FIG. 6 or 8 is used, and a detent of a small size is used. In this case, the power feeding capacitor 140 is separated from the wireless feeding pad and built into the inverter ( FIGS. 4 , 5 , and 7 ), and a structure for separating the wireless feeding pad and the feeding capacitor is used.

On the other hand, as described with reference to FIGS. 4 and 5 (a) and (b), FIGS. 6 (a) and 6 (b) can also be configured as an integrated or separate type, and also in FIGS. 4 and 5 In the same way as described with reference to (c) and (d) of FIG. 6(c) and FIG. 6(d), either of FIGS. 6(c) and 6(d) may be installed as a pair, or only one of FIGS. may be

In addition, as shown in FIG. 4 which is a built-in wireless feeding pad and FIG. 5 which is a lower type wireless feeding pad, (a), (b), (c), (d), (e) of FIG. 6 which is a built-in wireless feeding pad are also the same, respectively. It can also be configured as a lower-type wireless feeding pad in the form of a detent.

7 is a configuration diagram of a built-in/stair-type wireless power feeding pad, and FIG. 8 is a configuration diagram of a capacitor-integrated built-in/stair-type wireless feeding pad.

7 and 8, in order to accurately align the wireless power feeding pad and the wireless power collecting pad installed in the vehicle, when the wireless current collecting pad is installed in front of the front wheel under the vehicle, it stops at the first stop and is mounted behind the front wheel of the lower part of the vehicle. If necessary, it can be stopped at the two-stage stopper to align the front and rear of the feeding and collecting pads. In this case, in order to avoid high voltage and secure economic feasibility, a capacitor-integrated built-in stair-step feeding pad or a capacitor-integrated lower-mounted stair-step feeding pad may be used.

8 is a capacitor-integrated built-in wireless power feeding pad to which a power feeding capacitor for LC resonance is attached in each case of FIG. 7 .

As described with reference to FIGS. 4 and 5 (a) and (b), FIGS. 7 (a) and 7 (b) can also be configured as an integrated or separate type, and FIGS. 8 (a) and 8 (b) It is also possible to configure as an integrated type or a separate type. Also, as described with reference to FIGS. 4 and 5 (c) and (d), FIGS. 7 (c) and 7 (d) are also installed as a pair, or FIGS. 6 (c) or 6 (d) ) may be installed as only one, FIGS. 8(c) and 8(d) may also be installed as a pair, or only one of FIGS. 8(c) or 8(d) may be installed.

In addition, as shown in FIG. 4 which is a built-in wireless feeding pad and FIG. 5 which is a lower type wireless feeding pad, (a), (b), (c), (d), and (e) of FIG. 7 which is a built-in wireless feeding pad are the same, respectively. It can also be configured as a lower-type wireless feeding pad in the form of a detent, and (a), (b), (c), (d), (e) of FIG. It can also be configured.

9 is a configuration diagram of a wireless power feeding pad having a power feeding coil forming a single loop over the entire vehicle stopper 400 .

Of course, the feeding coil of FIG. 9 may also be configured as a multi-turn feeding coil, but unlike FIGS. 4 to 8 having a plurality of circular loops, FIG. An embodiment of a feed coil forming a loop is shown. This one-loop feeding coil can also be applied to any wireless feeding pad such as the wireless feeding pad of FIGS. 4 to 8 and its derivative wireless feeding pad, that is, integrated/integrated, built-in/lower type, and capacitor integrated type .

On the other hand, one or more cameras (130, general cameras or infrared cameras) are installed on the various feeding pads of FIGS. 4 to 9, and using AI technology, it is checked whether coins or various metal fittings are placed on the feeding pad to ensure heat safety during charging. It is possible to solve the problem, solve the safety problem of living things by detecting human hands or living creatures entering on the feeding pad, and to facilitate the alignment of the feeding and collecting pads by showing the feeding pad to the driver. Alternatively, one or more various sensors other than a camera may be provided in order to determine whether a metal is present on the power supply pad, whether a living organism enters the power supply area, or an alignment for charging the charging vehicle.

That is, the camera 130 illustrated in FIGS. 4 to 9 may be replaced with the aforementioned sensor. Such a camera or sensor may be installed on the fixed wireless feeding pad 100 and the mobile wireless feeding pad 200 .

4 to 9, the camera 130 may be installed on the vehicle stopper 400, and the inverter 10 is fixed/movable wireless power feeding pad 100,200 and the vehicle stopper as shown in FIG. If it is installed separately from the vehicle, it may also be installed on the vehicle stopper 400 , or the camera may be installed in or around the inverter 10 . Also, in the case of the mobile wireless feeding pad 200 , it may be installed inside the mobile wireless feeding pad 200 .

Furthermore, the inverter 10 may be installed separately from the fixed/movable wireless power feeding pads 100 and 200 and the vehicle stopper as shown in FIG. Separation installation means that the device containing the fixed/movable wireless power feeding pad 100,200 and the inverter are separated and connected by a power line, and the integral means the device containing the fixed/movable wireless power feeding pad 100,200. It means that the inverter is included inside. In particular, when the inverter is manufactured integrally with the fixed wireless power feeding pad 100 , it may be installed together with the stationary wireless power feeding pad 100 in or under or around the vehicle stopper 400 .

Meanwhile, as described above, the wireless feeding pads 100 and 200 may be installed inside the stopper 400 or under or around the lower portion of the stopper 400 , but are installed in a form linked to the previously installed stopper 400 . is also possible That is, for example, a wireless power feeding pad may be installed in the lower part of the ground between the stoppers 400 formed on both sides of the wheel of the vehicle.

10 is a diagram illustrating an embodiment when the wireless power feeding pad 100 is installed in a form that can be matched with the wireless power collecting pad 300 by sliding forward or backward by detecting the detent contact.

10 is a top down view of the vehicle detent 400 and the wireless power feeding pad 100, and arrows indicate forward and rearward directions.

When the wheel of the vehicle comes into contact with the stopper 400, the control unit of the wireless power feeding pad detects this and controls the feeding coil 110 and the ferrite core 120 to slide forward or backward, and thereby the feeding coil 110 and the ferrite core 120 is matched to the wireless current collecting pad 300 of the vehicle. To this end, as an embodiment, a module including a power supply coil 110 and a ferrite core 120 may be installed in a structure capable of sliding on a rail. Hereinafter, to distinguish such a wireless feeding pad from the aforementioned 'built-in' wireless feeding pad and 'lower type' wireless feeding pad, it will be referred to as a 'linked' wireless feeding pad in the sense that it is associated with a detent.

In the case of FIG. 10, it is illustrated that such a detent-associated wireless feeding pad 100 is provided between the demountable detents 400, but the present invention is not limited thereto. Around (for example, the side), it can be configured in various ways, such as the above-described link-type wireless power feeding pad 100 is provided.

As described above, the connected wireless power feeding pad in which the feeding coil and the ferrite core are slidable by the touch sensing of the detent may be installed under the ground or installed on the ground. Of course, when configured under the ground, a space in which the power supply coil and the ferrite core can slide must be provided under the ground.

11 is a configuration diagram of a wireless current collecting pad 300 that can be mounted in an arbitrary space of a vehicle.

The wireless current collecting pad 300 includes one or a plurality of multi-turn current collecting coils (hereinafter referred to as 'collecting coils') 310, and a ferrite core 320 on the back and side surfaces, FIG. 11 shows a structure of a wireless current collecting pad in which the rear part 41 of the ferrite core 320 is mounted on the lower part of the vehicle and the coil maintains a parallel state with the power supply pad. It is desirable that the wireless current collecting pad be easily moved and mounted in various locations of the vehicle as needed. To this end, the vehicle is provided with a detachable unit (not shown) capable of mounting the wireless current collecting pad at various positions, and the detachable wireless current collecting pad is provided on the vehicle detachable unit.

By means of the ferrite core 320, the wireless power from the fixed/movable wireless feeding pad or the vehicle stopper built-in/lower type wireless power feeding pad 100, 200 stays in the wireless current collecting pad 300 space, thereby reducing the amount of power received It increases transmission efficiency and blocks EMI and EMF from radiating to the outside. At this time, the wireless power collecting pad 300 receives wireless power only from the corresponding power feeding coils matching the fixed/mobile wireless feeding pad or the vehicle stop built-in/lower type wireless feeding pad 100,200, or all or all of the wireless feeding pad. When a significant number of power supply coils are activated, the amount of received power is maximized by forming a receiving magnetic field beam by adjusting the current phase of each receiving multi-coil based on the voltage or current value flowing through each of the power supply coils of the wireless power collecting pad.

At this time, the wireless current collecting pad 300 attaches only the power supply coil and the ferrite core to the lower part of the vehicle, the side, the front and rear surfaces, the roof, etc. Alternatively, it is possible to install separately. In addition, each of the wireless current collecting pad, the capacitor box, the rectifier, and the regulator may be configured as one or more modules.

In addition, when parking at the front or rear, select the mounting space of the wireless power collecting pad under the vehicle so that it overlaps as much as possible with the wireless power pad area to increase the tolerance for left and right deviation and front-to-back deviation between the wireless power pad and the wireless power collecting pad. At this time, the space where the current collecting pad is installed is selected so that the overlapping area between the power feeding pad and the current collecting pad is maximized when the vehicle stopper and the vehicle wheel are in close contact.

12 is a view showing embodiments of an apparatus 150 for adjusting the separation distance between the wireless power feeding pad 100 and the wireless power collecting pad 300 using a vehicle stopper, and FIGS. 13 to 15 are vehicle stoppers It is a view showing other embodiments of the apparatus 150 for adjusting the separation distance between the wireless power feeding pad 100 and the wireless power collecting pad 300 using

The wireless power feeding pad 100 may further include a spacing adjusting device 150 installed in each charging and parking slot to minimize the gap between the wireless power feeding pad 100 and the wireless power collecting pad 300 . 12 and 13 show an embodiment of such a spacing adjustment device 150 .

That is, the distance adjusting device in the embodiment of FIG. 12 includes an AC power source 151.1 or a DC power source 151.2, and an electromagnet 152 driven by such a power source, and electric power by driving the electromagnet 152 and a power supply coil position adjusting unit for moving the position of the coil to be closer to the current collecting coil.

At this time, the feeding coil position adjusting unit includes an iron 153.1 or a permanent magnet 153.2 positioned on one side or both sides of the magnetic pole of the electromagnet. The iron 153.1 or the permanent magnet 153.2 may directly lift the feeding coil 110 as shown in FIG. 12(c), or the feeding coil position adjusting unit as shown in FIGS. It may be attached to the arm 154 of the , and move the arm 154 through magnetic attraction to the electromagnet 152 to lift the feed coil 110 by the arm 154 .

When the wireless power feeding pad 100 is installed on the vehicle stopper 400 as shown in FIG. 12 , the ground height is different depending on the vehicle. An electromagnet spring device using an alternating current or an electromagnet spring device using a direct current as shown in FIG. 12(b) or an electromagnet spring device using a direct current of a simplified structure as shown in FIG. .

The spacing adjusting device in the embodiment of FIGS. 13 and 14 may include an elastic part for moving the power feeding coil from the lower end of the power feeding coil to be closer to the current collecting coil at the upper side.

Using a simple spring (elastic part) 155-based separation distance shortening device as shown in FIG. 13, or passively using an elastic material (elastic part) 156 as shown in FIG. 14, between the feeding pad and the current collecting pad The separation distance can be reduced.

That is, in the case of Fig. 13, when a low-floor vehicle enters on the stopper 400 (Fig. 13(b)) and when a high-rise vehicle enters (Fig. 13(c)), the power supply coil is simply powered by the spring 155. The position of 110 can be adjusted.

In the case of FIG. 14 , when a vehicle enters the stopper 400 , the elastic material 156 expands and lifts the power feeding pad 100 to reduce the gap between the current collecting coil and the power feeding coil. The wireless feeding pad to which the elastic material 156 of FIG. 14 is applied may also be applied to any type of wireless feeding pad shown in FIGS. 4 to 9 .

In the case of FIG. 15 , the separation distance between the feeding and collecting pads is actively reduced by using the protrusion 163 and the arm 161 . The protrusion 163 protrudes on the stopper 400 (FIG. 15(a)), but when it is pressed by the wheel 21 when a vehicle enters, it is pushed into the stopper. At this time, the arm 161 connected to the protrusion 163 is pushed in to push up the feed coil support 162 (FIG. 15 (b)), and accordingly, the feed coil 110 at the upper end thereof is pushed up, collecting current. It will reduce the distance between the coil and the coil. The spring 164 gives flexibility to push up the power supply coil 110 to some extent even when it comes into contact with the current collecting coil at the top.

16 is a diagram illustrating an embodiment in which the wireless current collecting pad 100 is installed at the rear of the vehicle 20 .

16, when the wireless power collecting pad 100 is mounted on the rear of the bumper or the trunk door of the vehicle 20, installation costs and parking lot maintenance costs can be reduced without the need for construction on the floor of the parking lot, and in most buildings underground In the parking lot, the electric vehicle charging device is installed at the back of the parking lot, so by moving and using the wireless power supply pad, the burden of additional installation of the wireless power supply pad can be reduced. In addition, it is possible to reduce the risk of damage to the wireless power collecting device due to road debris or bumps while driving, which is likely to occur when the wireless power collecting pad 300 is installed under the vehicle.

However, as described above, the present invention is not limited to the case in which the wireless power collector 300 is mounted on the rear of the vehicle, and may be configured to be mounted anywhere on the front, left, right, upper, or lower portion of the vehicle.

Claims (23)

1. A fixed wireless feeding pad comprising:

   a multi-turn power feeding coil through which the current supplied from the inverter flows (hereinafter referred to as a 'feeding coil');

   a ferrite core provided on the bottom or bottom and side surfaces of the feeding coil to direct power transmission by magnetic field to the wireless current collecting pad;

   vehicle detents protruding above the ground (hereinafter referred to as 'stops'); and,

   A control unit that forms a magnetic field beam by estimating the location of the wireless current collecting pad based on the load change amount of each feeding coil, selecting one or more specific feeding coils from among a plurality of feeding coils, or adjusting the current phase of each feeding coil

   including,

   The feeding coil and the ferrite core,

   Built in the stopper, or installed on or around the lower part of the stopper, or installed in a structure that can slide in connection with the stopper,

   Fixed wireless feeding pad.
2. The method according to claim 1,

   A spacing adjustment device installed in each charging parking slot to minimize the gap between the wireless power feeding pad and the wireless power collecting pad.

   Fixed wireless feeding pad further comprising a.
3. 3. The method according to claim 2,

   The spacing adjustment device,

   DC or AC power;

   an electromagnet driven by the power source; and

   Feeding coil position adjusting unit for moving the position of the feeding coil to be closer to the current collecting coil by driving the electromagnet

   including,

   The feeding coil position adjusting unit,

   Providing an iron or permanent magnet located on one side or both sides of the magnetic pole of the electromagnet

   A fixed wireless feeding pad characterized by a.
4. 3. The method according to claim 2,

   The spacing adjustment device,

   An elastic part that moves the feeding coil from the bottom of the feeding coil so that it is closer to the current collecting coil at the top.

   A fixed wireless feeding pad comprising a.
5. 3. The method according to claim 2,

   The spacing adjustment device,

   a protrusion protruding from the slope of the stopper; and,

   An arm having one end connected to the protrusion and the other end connected to the feeding coil support unit

   to provide

   The projection pushes the arm while being pushed into the stopper when the pressure of the wheel of the vehicle is applied, and pushes up the feed coil support part by the arm, and the feed coil support part pushes up the feed coil at its upper end to act

   A fixed wireless feeding pad characterized by a.
6. The method according to claim 1,

   Providing a capacitor for LC resonance inside the stopper

   A fixed wireless feeding pad characterized by a.
7. The method according to claim 1,

   Providing an LC resonance capacitor under the detent or under the ground surface around the detent

   A fixed wireless feeding pad characterized by a.
8. The method according to claim 1,

   The stopper is

   Those having at least one of '-', '┐', '┌', '+', 'T' and 'ㅗ' shapes

   A fixed wireless feeding pad characterized by a.
9. 9. The method of claim 8,

   When the detent is the '-' shape, the detent is,

   A detent (hereinafter referred to as 'integrated detent') in the form of a straight line from the contact part of the left wheel of the vehicle to the contact part of the right wheel

   A fixed wireless feeding pad characterized by a.
10. 9. The method of claim 8,

    When the detent is the '-' shape, the detent is,

    A detent (hereinafter referred to as a 'separable detent') in which the contact part of the left wheel and the contact part of the right wheel are separated.

    A fixed wireless feeding pad characterized by a.
11. 9. The method of claim 8,

    The '┐'-shaped detent and the '┌'-shaped detent,

    consists of a pair of '┐'-shaped detents and '┌'-shaped detents, or

    consists of one '┐' shaped detent, or

    What is accomplished with one '┌'-shaped detent

    A fixed wireless feeding pad characterized by a.
12. The method according to claim 1,

    The feed coil is

    to form a plurality of multi-turn coil loops, or

    forming one multi-turn coil loop

    A fixed wireless feeding pad characterized by a.
13. The method according to claim 1,

    One or more cameras or one or more sensors to determine the presence of metal on the feed pad, whether a creature has entered the feed zone, or the alignment of the charging vehicle for charging.

    Fixed wireless feeding pad further comprising a.
14. 14. The method of claim 13,

    The camera or sensor,

    When the inverter is provided integrally with the fixed wireless feeding pad, it is mounted on the stopper,

    When the inverter is provided separately from the fixed wireless power feeding pad, it is mounted on the stopper, or is mounted around the inverter or the inverter.

    A fixed wireless feeding pad characterized by a.
15. The method according to claim 1,

    Inverter supplying current to the feed coil

    further comprising,

    The inverter is

    The feed coil and the ferrite core are integrally provided inside, below or around the lower portion of the stopper,

    What is provided separately from the feeding coil, the ferrite core and the stopper

    A fixed wireless feeding pad characterized by a.
16. The method according to claim 1,

    When the feed coil and the ferrite core are installed in a structure that can slide in connection with the stopper,

    When the wheel of the vehicle is in contact with the detent, the power supply coil and the ferrite core are controlled to slide forward or backward to match the wireless current collecting pad of the vehicle.

    A fixed wireless feeding pad characterized by a.
17. As a mobile wireless feeding pad,

    a plurality of multi-turn power feeding coils through which the current supplied from the inverter flows (hereinafter referred to as 'feeding coil');

    a ferrite core provided on the bottom surface, or bottom and side surfaces of the plurality of feeding coils to direct power transmission by a magnetic field to a wireless current collecting pad;

    a control unit configured to select a multi-coil by estimating a position of a wireless current collecting pad based on a load variation of each power supply coil or to form a magnetic field beam by adjusting a current phase of each multi-coil; and,

    A transfer device for moving the feed coil and the ferrite core

    A mobile wireless feeding pad comprising a.
18. 18. The method of claim 17,

    The transfer device is

    The movable wireless power feeding pad is transferred to the position where the wireless power collecting pad is located, front, rear, left, right, or the upper or lower part of the vehicle, and performs a function of aligning it by converting it horizontally or vertically so as to be parallel with the wireless power collecting device to do

    A mobile wireless feeding pad characterized by a.
19. 18. The method of claim 17,

    One or more cameras or one or more sensors to determine the presence of metal on the feed pad, whether a creature has entered the feed zone, or the alignment of the charging vehicle for charging.

    Removable wireless feeding pad, characterized in that it further comprises.
20. 20. The method of claim 19,

    The camera or sensor,

    When the inverter is provided integrally with the mobile wireless power feeding pad, it is provided on the mobile wireless power feeding pad, or

    When the inverter is provided separately from the mobile wireless feeding pad, it is mounted around the inverter or the inverter or inside the mobile wireless feeding pad

    A mobile wireless feeding pad characterized by a.
21. 18. The method of claim 17,

    Inverter supplying current to the feed coil

    further comprising,

    The inverter is

    It is provided integrally with the feeding coil and the ferrite core, or

    What is provided separately from the feed coil and the ferrite core

    A mobile wireless feeding pad characterized by a.
22. A wireless current collecting pad comprising:

    a ferrite core provided on the upper surface, or upper and side surfaces of a plurality of multi-turn current collecting coils (hereinafter referred to as 'collecting coil') and serving to effectively receive the magnetic field transmitted from the wireless feed pad;

    a plurality of current collecting coils through which an induced current by the power received from the wireless feeding pad flows; and,

    A control unit that selects a multi-coil by estimating the position of the wireless power feeding pad based on the voltage or current value induced in each current collecting coil or forms a receiving magnetic field beam by adjusting the current phase of each multi-coil

    A wireless current collecting pad comprising a.
23. 23. The method of claim 22,

    Detachable part that can be detached from one or more of the front and rear bumpers, left and right doors, trunk door, the front/middle/rear part of the vehicle under the vehicle, and the roof

    Wireless current collecting pad further comprising a.

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