KR102485065B1 - Apparatus and method for non-contract charging - Google Patents

Abstract

A wireless charging device and method are disclosed. A wireless charging device according to an aspect of the present invention is formed on the inside of a housing and the housing, so that a battery of a mobile body can be charged based on charging power generated based on power from a power facility, the charging power as described above. It includes a charging device that wirelessly transmits to a mobile body, a support that is fixed to the ground, and a driving unit that is hinged between the housing and the support and rotates the housing to raise or lower the charging device.

Description

Wireless charging device and method {APPARATUS AND METHOD FOR NON-CONTRACT CHARGING}

The present invention relates to a wireless charging device and method, and more particularly, to a wireless charging device and method for resolving parking disputes of electric vehicles and the hassle of wired charging, and preventing metal foreign substances from being attached to power transmission units. It's about how.

It is a general method to operate an electric vehicle by moving to a place where a dedicated charger (fast or slow) is installed, charging by connecting the charger provided in the space, and charging the charged amount. At this time, the dedicated charger (quick or slow) of the electric vehicle is generally fixed to a wall in a fixed form or installed in a stand type, and is divided into a mobile slow charger form. These chargers must be installed or used with a parking space secured. In particular, in consideration of the fact that electric vehicles must occupy the space during charging, it is necessary to secure a separate dedicated parking lot.

However, charging zones exclusively for electric vehicles are legally prohibited from parking vehicles with internal combustion engines other than electric vehicles, making it difficult to create separate charging spaces for electric vehicles in old apartments that lack existing parking spaces.

On the other hand, in order to improve the inconvenience of wired charging these days (connecting plug specifications are different, and the hassle of getting down and connecting after parking), a wireless charging device for electric vehicles using a wireless charging PAD (embedded charging coil) through electromagnetic induction is developed. This is actively being done. However, if there is a metal foreign substance on the transmission plate of the power transmission unit, there is a risk of fire due to overheating, so the wireless charging PAD has a disadvantage in that it must always be kept clean.

The background art of the present invention is disclosed in Republic of Korea Patent Publication No. 10-2019-0015986 (2019.02.15. Publication, wireless charging control method and power supply device using the same, charging control method of electric vehicle and charging control device using the same) there is.

The present invention has been made to improve the above problems, and an object of the present invention is to solve the hassle of wired charging and parking disputes of electric vehicles, and to prevent metal foreign substances from being attached to the power transmission unit It is to provide a wireless charging device and method.

Another object of the present invention is to provide a wireless charging device and method for comprehensively unmanned parking, charging, and billing by automatically recognizing and charging an electric vehicle.

The problem to be solved by the present invention is not limited to the above-mentioned problem (s), and another problem (s) not mentioned will be clearly understood by those skilled in the art from the following description.

A wireless charging device according to an aspect of the present invention is formed on the inside of a housing and the housing, so that a battery of a mobile body can be charged based on charging power generated based on power from a power facility, the charging power as described above. It includes a charging device that wirelessly transmits to a mobile body, a support that is fixed to the ground, and a driving unit that is hinged between the housing and the support and rotates the housing to raise or lower the charging device.

In the present invention, the charging device includes a sensing unit that detects the moving object, a control unit that determines whether the detected moving object is an authorized moving object, and controls the driving unit according to the determination result to elevate or lower the charging device. It may include a power transmission unit that wirelessly transmits power to the mobile body.

In the present invention, when the detected moving object is an authenticated moving object, the control unit controls the driving unit to lower the charging device so that the charging device is horizontally positioned on the ground, and detects the moving object through the detecting unit. If not, or if the detected moving object is not authenticated, the charging device may be moved up and down by controlling the driving unit so that the charging device is located in a vertical direction on the ground.

The present invention further includes a storage unit storing information about the type of mobile body capable of wireless charging through the charging device, and the control unit, when the detected moving object corresponds to the type of moving object stored in the storage unit, stores the mobile body. It can be judged as a certified moving object.

In the present invention, the storage unit may store unique identification information of the mobile body, a charge amount of the battery, and a charging progress time after the battery of the mobile body is completely charged.

In the present invention, the control unit controls the driving unit so that the charging device is positioned in a vertical direction on the ground when the moving object is not detected through the sensing unit after the battery charging of the moving object is completed, so that the charging device is moved up and down. can make it

In the present invention, the power transmission unit may include a transmission plate having a transmission coil to which a load current according to the charging power is applied.

In the present invention, the charging device further includes a position adjusting unit for adjusting the position of the transmitting plate by monitoring a point where the load current of the transmitting coil is maximized so that the transmitting plate is coaxially aligned with the receiving plate of the moving body. can do.

In the present invention, the charging device further includes a regulation unit for regulating the charging power supplied to the power transmission unit, and the regulation unit transmits the charging power to the power transmission unit when charging of the battery mounted in the mobile body is started. It is short-circuited to be supplied, and can be opened to cut off the charging power supplied to the power transmission unit when charging of the battery mounted in the mobile body is completed.

In the present invention, the charging device further includes a notification unit, and the notification unit may output a signal informing that it is a parking area exclusively for charging movable objects or a signal informing whether charging of movable objects is possible under the control of the control unit.

In the present invention, the power equipment operates so that it can be raised and lowered relative to the ground at an installed position to be exposed on the ground or buried under the ground, and the wireless charging device may be provided on top of the power equipment.

In the present invention, the mobile body includes a power receiver wirelessly receiving charging power from the charging device, a communication unit communicating with the charging device, and a control unit transmitting unique identification information of the mobile body to the charging device through the communication unit. can include

In the present invention, the power receiving unit may include a receiving plate installed with a receiving coil generating an induced voltage by a load current applied to the transmitting coil of the charging device.

In a wireless charging method according to another aspect of the present invention, when a moving object is detected in a state in which the charging device is located in a vertical direction on the ground and indicates that it is a parking area exclusively for moving objects, the wireless charging device determines that the detected moving object is an authorized moving object. Determining, if the detected moving object is an authenticated moving object, the wireless charging device positions the charging device in a horizontal direction on the ground, and through a power transmission unit provided with charging power generated based on power from a power facility, charging the battery of the mobile body by transmitting power to the power receiver of the mobile body, and positioning the charging device in a vertical direction on the ground by the wireless charging device when the mobile body is not detected after the battery charging is completed. include

In the present invention, in the step of determining whether the detected moving object is an authorized moving object, the wireless charging device may determine the moving object as an authenticated moving object when the detected moving object corresponds to the type of moving object stored in the storage unit. there is.

The present invention may further include, when charging of the battery of the mobile body is completed, the wireless charging device storing unique identification information of the mobile body, a charge amount of the battery, and a charging progress time.

In the step of charging the battery of the mobile body, the wireless charging device monitors the point at which the load current of the transmission coil is maximized so that the transmission plate of the power transmission unit is coaxially aligned with the reception plate. The position of the plate can be adjusted.

The wireless charging device and method according to an embodiment of the present invention automatically recognizes an authenticated moving object through a sensing unit and wirelessly charges the authenticated moving object, thereby solving the problem of parking the moving object and the hassle of wired charging. .

In the wireless charging device and method according to an embodiment of the present invention, since the charging device is normally erected vertically on the ground, it is possible to fundamentally prevent metal foreign substances from being attached to the power transmission unit.

The wireless charging device and method according to an embodiment of the present invention can automatically recognize and charge a moving object, so that parking, charging, and charging can be comprehensively unmanned.

On the other hand, the effects of the present invention are not limited to the effects mentioned above, and various effects may be included within a range apparent to those skilled in the art from the contents to be described below.

1 is a diagram for explaining a wireless charging system for a moving object according to an embodiment of the present invention.
2 is an exemplary view for explaining an electric vehicle charging parking space according to an embodiment of the present invention.
3 is a block diagram schematically showing the configuration of a wireless power receiver for a mobile body according to an embodiment of the present invention.
4 is a diagram for explaining a wireless charging device according to an embodiment of the present invention.
5 is a diagram for explaining the operation of a wireless charging device according to an embodiment of the present invention.
FIG. 6 is a block diagram schematically illustrating the configuration of the charging device shown in FIG. 4 .
7 to 10 are exemplary diagrams for explaining a process of adjusting a position of a transmission plate in a wireless charging device according to an embodiment of the present invention.
11 is a flowchart illustrating a wireless charging method according to an embodiment of the present invention.

Hereinafter, a wireless charging device and method according to an embodiment of the present invention will be described with reference to the accompanying drawings. In this process, the thickness of lines or the size of components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of a user or operator. Therefore, definitions of these terms will have to be made based on the content throughout this specification.

Implementations described herein may be embodied in, for example, a method or process, an apparatus, a software program, a data stream, or a signal. Even if discussed only in the context of a single form of implementation (eg, discussed only as a method), the implementation of features discussed may also be implemented in other forms (eg, an apparatus or program). The device may be implemented in suitable hardware, software and firmware. The method may be implemented in an apparatus such as a processor, which is generally referred to as a processing device including, for example, a computer, microprocessor, integrated circuit, programmable logic device, or the like. Processors also include communication devices such as computers, cell phones, personal digital assistants ("PDAs") and other devices that facilitate communication of information between end-users.

1 is a diagram for explaining a wireless charging system for a moving object according to an embodiment of the present invention, and FIG. 2 is an exemplary diagram for explaining a parking space for charging an electric vehicle according to an embodiment of the present invention.

Referring to FIG. 1 , a wireless charging system according to an embodiment of the present invention may include a mobile body 10 and a wireless charging device 200 .

The mobile body 10 operates by receiving power from an installed battery (not shown) and may include a wireless power receiving device 100 for charging the battery. The mobile body 10 may be implemented in various types of devices that move by receiving power through a battery, such as an electric vehicle or a mobile robot, but in an embodiment of the present invention, an electric vehicle will be described as an example.

The electric vehicle enters the parking area 2 of the electric vehicle charging parking space 1, parks, and wirelessly receives power from the wireless charging device 200 installed in the parking area 2. ), charging power can be supplied by the built-in battery.

The battery may supply power to a driving system (not shown) of the electric vehicle to drive the electric vehicle. The battery may be charged by power transmitted from the wireless power receiver 100 . In addition, the battery may be configured to be charged not only by the wireless power receiver 100 but also by other charging means (wired charging means) that may be additionally provided.

A plurality of wireless charging devices 200 may be installed in an electric vehicle charging parking space (place) 1 as shown in FIG. 2 . The electric vehicle charging parking space 1 is divided into a plurality of parking areas 2, and a wireless charging device 200 may be installed in each parking area 2. The parking area 2 may be one of the parking spaces of the parking space 1 demarcated by paint or the like. The wireless charging device 200 may be located inside the parking area 2 so that only the authorized moving object 10 can park (charge) in the parking area 2. For example, the wireless charging device 200 may be located in the center of the parking area 2. Accordingly, if the moving object 10 entering the parking area 20 is the certified moving object 10, the wireless charging device 200 is located in the horizontal direction on the ground, so the moving object 10 is in the parking area 2 You can park (recharge). If the moving object 10 entering the parking area 20 is not the certified moving object 10, the wireless charging device 200 is positioned vertically on the ground (standing state), so the wireless charging device 200 serves as an obstacle, and due to this, the movable body 10 cannot be parked in the parking area 2.

The wireless charging device 200 may notify that it is an electric car parking area 2 or charge the electric car depending on whether an electric car is detected. For example, when an electric vehicle is not detected, the wireless charging device 200 may play a role of notifying a parking area 2 dedicated to electric vehicles. When an electric vehicle is detected, the wireless charging device 200 may serve as a charger for charging the electric vehicle.

The wireless charging device 200 may be installed on a power facility 20 buried in the ground where the electric vehicle parks. When an electric vehicle is parked in the parking area 2 of the electric vehicle charging parking space 1 to charge the battery, the wireless charging device 200 is based on the charging power generated based on the power from the power facility 20 Charging power may be transmitted to the wireless power receiver 100 of the electric vehicle so that the battery of the electric vehicle can be charged. That is, the wireless charging device 200 may generate charging power for charging the battery of the electric vehicle based on the power from the power facility 20 . At this time, the power facility 20 should be able to supply a predetermined amount of power. Therefore, in the present embodiment, a ground transformer (PAD type) that supplies underground power to consumers using electricity may be employed as the power facility 20. Furthermore, it may be implemented as a buried type (embedded) ground transformer that operates so that it can be elevated on the ground at the installed position and exposed on the ground or buried under the ground. That is, considering that the mobile body 10 can be implemented as an electric vehicle, the power facility 20 is implemented as a buried ground transformer, and after installing the wireless charging device 200 on top of the ground transformer, the ground transformer An embodiment in which a battery mounted in an electric vehicle is charged when the electric vehicle is parked and stopped on top of a ground transformer in a buried state may be implemented.

3 is a block diagram schematically showing the configuration of a wireless power receiver for a mobile body according to an embodiment of the present invention.

Referring to FIG. 3 , the wireless power receiver 100 of the mobile body 10 according to an embodiment of the present invention may include a communication unit 110, a power receiver 120, and a control unit 130. It should be noted that the configuration of the wireless power receiver 100 described above is not necessarily an essential configuration, and may be configured to include more or fewer components.

The communication unit 110 is a component that communicates with the wireless charging device 200, and can transmit charging information including moving object identification information, charging efficiency such as charging speed, charging degree, etc. to the wireless charging device 200. . The communication unit 110 may be a one-way communication means for generating a signal in one direction toward the wireless charging device 200, or may be a communication means capable of communicating with the wireless charging device 200 in both directions.

The power receiver 120 may wirelessly receive power from the wireless charging device 200 and transfer the power to the battery. The power receiving unit 120 may be, for example, an electromagnetic coil panel, and may receive power wirelessly using an electromagnetic induction method or a resonance method. That is, the power receiving unit 120 may include a receiving plate installed with a receiving coil in which an induced voltage is generated by a load current applied to a transmitting coil installed in the power transmitting unit 223 of the wireless charging device 200.

The power receiver 120 may be installed on the front side of the vehicle (eg, lower than the engine room), but the spirit of the present invention is not necessarily limited thereto.

The control unit 130 may transmit mobile body identification information (eg, model-specific number) to the wireless charging device 200 through the communication unit 110, and transmit charging power from the wireless charging device 200 to the power receiver 120. It can be received through the charging of the battery. At this time, the wireless charging device 200 can authenticate (verify) the mobile body 10 using the mobile body identification information, and transmit power through the power transmission unit 223 if the mobile body 10 has been authenticated (verified). there is.

Figure 4 is a view for explaining a wireless charging device according to an embodiment of the present invention, Figure 5 is a view for explaining the operation of the wireless charging device according to an embodiment of the present invention, Figure 6 is shown in FIG. 7 to 10 are block diagrams schematically showing the configuration of a charging device, and are exemplary diagrams for explaining a process of adjusting a position of a transmission plate in a wireless charging device according to an embodiment of the present invention.

Referring to FIG. 4, the wireless charging device 200 according to an embodiment of the present invention includes a housing 210, a charging device 220 formed inside the housing 210, a driving unit 230, and a support 240. can include

The housing 210 is a panel member installed around the outer circumference of the charging device, and constitutes the exterior of the charging device 220 fixedly installed in each parking area 2 of the parking space 1 for movable objects, such as rainwater or dust. It can block the inflow of foreign substances and protect it from the external environment.

The support 240 may be fixedly installed on the ground.

The driving unit 230 is hinged between the housing 210 and the support 240 to rotate the housing 210, thereby lifting or lowering the charging device 220.

The driving unit 230 is connected to one end of the housing 210 and is a rotational driving means for providing a rotational driving force to the housing 210 (charging device 220) for raising or lowering the charging device 220, and is a server motor. It consists of a rotation driving means such as a controllable motor such as an electric motor or the like.

As shown in FIG. 5 , the driving unit 230 may raise or lower the charging device 220 . For example, when the moving object 10 is not detected, the driving unit 230 may operate the charging device 220 to be positioned vertically on the ground as in a. At this time, the wireless charging device 200 may play a role of notifying the parking area 2 dedicated to the mobile body 10 (electric vehicle). In addition, when the authenticated moving object 10 is detected, the driving unit 230 may operate the charging device 220 to be horizontally positioned on the ground as shown in b. At this time, the wireless charging device 200 may serve as a charger for charging the mobile body 10 .

As described above, since the charging device 220 is normally erected vertically on the ground, it is possible to fundamentally prevent metal foreign substances from being attached to the power transmitter 223 . That is, since the charging device 220 is normally upright, the metal foreign matter descends downward due to gravity, and it is possible to prevent the metal foreign matter from being attached to the power transmission unit 223 .

The charging device 220 is formed inside the housing 210 and supplies charging power to the mobile body so that the battery of the mobile body 10 can be charged based on the charging power generated based on the power from the power facility 20. 10) can be transmitted wirelessly.

As shown in FIG. 6, the charging device 220 includes a sensing unit 221, a storage unit 222, a power transmission unit 223, a control unit 224, a position adjusting unit 225, a control unit 226, A notification unit 227 and a power supply unit 228 may be included.

The detector 221 may detect the moving object 10 entering the parking area 2 . At this time, the sensor 221 may detect moving object identification information, a license plate of the moving object 10, and the like. The sensing unit 221 may include a camera, a QR code scanner, a high pass, an RFID reader, an optical scanner, a thermal imaging camera, a lidar (radar), a user terminal (cell phone) recognition device, and the like.

The storage unit 222 is a component that stores data related to the operation of the charging device 220 . Here, the storage unit 222 may use a known storage medium, and for example, any one or more of known storage media such as ROM, PROM, EPROM, EEPROM, and RAM may be used. In particular, the storage unit 222 includes information on the type of mobile body 10 capable of wireless charging through the wireless charging device 200, charging completion information of the mobile body 10 (unique identification information of the mobile body 10, battery (including charging amount and charging progress time) may be stored, and the stored information may be selected by the control unit 224 as needed.

The control unit 224 determines whether the moving object 10 sensed through the sensing unit 221 is the authenticated moving object 10, and controls the drive unit 230 according to the determination result to lift or lower the charging device 220. can be lowered At this time, if the detected moving object 10 corresponds to the type of moving object stored in the storage unit 222, the controller 224 may determine the detected moving object 10 as the authenticated moving object 10.

When the detected moving object 10 is the certified moving object 10, the control unit 224 may lower the charging device 220 by controlling the driving unit 230 so that the charging device 220 is horizontally positioned on the ground. there is. If the moving object 10 is not detected through the sensing unit 221 or the moving object 10 detected through the sensing unit 221 is not authenticated, the control unit 224 determines whether the charging device 220 is perpendicular to the ground. The charging device 220 may be moved up and down by controlling the driving unit 230 to be positioned in the direction.

The control unit 224 may charge the battery mounted on the mobile body 10 only when it is determined that the detected mobile body 10 is a charging allowable mobile body. For example, when the detection unit 221 recognizes identification information of the moving object 10 from an RFID terminal (eg, a high-pass terminal) mounted in a vehicle and transmits the identification information to the control unit 224, the control unit 224 detects the identification information of the moving object 10 Recognizing the type of the moving object 10 based on the identification information of and determining whether or not the type of the recognized moving object 10 has been pre-registered in the storage unit 222 determines whether the charge is allowed. , the battery mounted on the mobile body 10 can be charged only when it is determined that the mobile body is allowed to charge.

Since general internal combustion engine vehicles are prohibited from parking in the electric vehicle charging parking space 1, the charging device 220 may be operated in a standing state at all times. At this time, by attaching the sensing unit 221 (recognition of camera, QR CODE, high pass, RFID, mobile phone, etc.) capable of recognizing the mobile body to the erected part, it is possible to determine whether the mobile body 10 to be parked (charged) is allowed to charge. there is.

For example, when the detector 221 is a camera, the detector 221 may photograph a license plate of a vehicle, recognize the license plate through the photographed image, and transmit the image to the control unit 224 . Then, the controller 224 may analyze the license plate to determine whether it is an electric vehicle. Also, when the sensing unit 221 is implemented as a communication unit, the sensing unit 221 may receive moving object identification information from the moving object 10 and transmit the received moving object identification information to the control unit 224 . Then, the controller 224 may determine whether the corresponding moving object 10 is an electric vehicle by using the moving object identification information.

That is, in order to enable battery charging only for the previously authenticated moving object 10, the wireless charging device 200 stores the type of the authenticated moving object 10 in the storage unit 222 in advance. Accordingly, the controller 224 recognizes the type of the moving object 10 based on the unique identification information transmitted from the moving object 10, and if the recognized type of the moving object 10 exists in the storage unit 222, the type of the moving object 10 is stored. The battery of the mobile body 10 may be charged by determining that the mobile body 10 is authenticated (verified).

In addition, the control unit 224 may control whether the power transmission unit 223 is operated or not, and control driving of the position adjusting unit 225 . The controller 224 may move the power transmitter 223 or tilt the power transmitter 223 by controlling the position adjusting unit 225 .

When battery charging of the moving object 10 is completed, the control unit 224 may store charging completion information including moving object identification information, a charge amount of the battery, and a charging progress time in the storage unit 222 . The charge completion information stored in the storage unit 222 may be used to manage a battery charging history of the moving object 10 or to calculate charges.

On the other hand, the control unit 224 may control the overall operating state of the wireless charging device (200). Here, the controller 224 may include all types of devices capable of processing data, such as a processor. Here, a 'processor' may refer to a data processing device embedded in hardware having a physically structured circuit to perform functions expressed by codes or instructions included in a program, for example. As an example of such a data processing device built into hardware, a microprocessor, a central processing unit (CPU), a processor core, a multiprocessor, an application-specific integrated (ASIC) circuit), field programmable gate array (FPGA), etc., but the scope of the present invention is not limited thereto.

The power transmitter 223 may wirelessly transmit power to the power receiver 120 of the mobile body 10 . The power transmission unit 223 is a transmission coil to which a load current according to charging power (that is, power generated by the power supply unit 228 of the power facility 20 to charge the battery of the moving object 10) is applied. It may include an installed transmission plate.

That is, the transmitting coil of the transmitting plate and the receiving coil of the receiving plate of the wireless power receiving device 100 are magnetically coupled to each other, and the electromagnetic induction method generates an induced voltage in the receiving coil by a load current applied to the transmitting coil. Accordingly, wireless charging of the battery may be performed. The power transmission unit 223 may wirelessly transmit power using an electromagnetic induction method or a resonance method.

At this time, as shown in FIG. 7, when the transmitting plate and the receiving plate are coaxially aligned (ie, when the separation distance has a value of '0' in the state of having a fixed separation distance), the load current flowing through the transmitting coil is It becomes maximum so that it can supply maximum power to the battery. However, since the direction in which the movable body 10 enters for charging may change depending on the situation, the parking position of the movable body 10 on the power facility 20 is not fixed, but in the direction of entry of the movable body 10. may vary depending on the size of the plate, which leads to an alignment error between the transmitting plate and the receiving plate. Furthermore, a predetermined error may exist in the position where the receiving plate is installed on the movable body 10 for each of the plurality of movable bodies, and such a positional error of the receiving plate may increase an alignment error between the transmitting plate and the receiving plate.

Accordingly, the wireless charging device 200 monitors the point where the load current of the transmitting coil is maximized so that the transmitting plate is coaxially aligned with the receiving plate of the mobile body 10 and adjusts the position of the transmitting plate 225 can include

The position adjusting unit 225 may move or rotate the power transmission unit 223 . That is, the position adjuster 225 may move the power transmitter 223 to an area corresponding to the power receiver 120 of the mobile body 10 . Even if the power receiver 120 of the mobile body 10 is located on the power transmitter 223 and can be charged, the power transmitter 223 is not in an optimal charging state. For example, when the electric vehicle is incorrectly parked, the power receiving unit 120 may deviate from an area immediately above the power transmitting unit 223, and charging efficiency may decrease, and load of the electric vehicle and front/rear tire wear may be uneven, etc. Due to this, when the power receiver 120 is inclined, charging efficiency may decrease. However, the position adjustment unit 225 moves or rotates the power transmission unit 223 so that the power transmission unit 223 can be placed in an optimal charging state.

8 and 9 show the structure of the positioning unit 225 for adjusting the position of the transmission plate as an example, and as shown in FIGS. 8 and 9, the positioning unit 225 is a Y-axis reaction rail 225a ), a Y-axis fixed shaft 225b, a Y-axis drive motor 225c (eg, a linear motor), an X-axis reaction rail 225d, an X-axis fixed shaft 225e, and an X-axis drive motor 225f. can As shown in FIG. 8, the transmission plate is formed by being coupled with the Y-axis reaction rail 225a, and when the Y-axis reaction rail 225a is rotated by the Y-axis driving motor 225c, the Y-axis reaction rail 225a The screw thread of is rotated, and the transmission plate can be moved in the Y-axis direction according to the number and direction of rotation of the Y-axis driving motor 225c by using the threadless Y-axis fixing shaft 225b as a fixed axis. The Y-axis reaction rail 225a and the Y-axis fixed shaft 225b are formed by combining the X-axis reaction rail 225d and the X-axis fixed shaft 225e, and the Y-axis reaction rail 225d is rotated by the X-axis drive motor 225f. As the reaction rail 225a and the Y-axis fixing shaft 225b move in the X-axis direction, the transmission plate can move in the X-axis direction according to the number and direction of rotation of the X-axis driving motor 225f.

Referring to a specific example in which the position of the transmission plate is adjusted with reference to FIG. 9, as the Y-axis drive motor 225c rotates forward (clockwise), the threaded Y-axis reaction rail 225a rotates forward. , the threaded portion of the transmission plate threadedly coupled to the Y-axis reaction rail 225a rotates counterclockwise (counterclockwise) so that the transmission plate can be moved downward. In the same principle, as the X-axis drive motor 225f rotates forward (clockwise), the X-axis reaction rail 225d rotates forward, and the Y-axis reaction rail 225a and the Y-axis failure shaft move to the right. The transmission plate can also be moved in the right direction.

As shown in FIG. 10, the position adjusting unit 225 moves the transmission plate in the X-axis direction and the Y-axis direction sequentially while searching for a point where the load current is maximum, so that the transmission plate is coaxial with the reception plate. can be sorted on

On the other hand, when adjusting the position of the transmitting plate, the position adjusting unit 225 determines the direction in which the moving body 10 enters to reach the power facility 20, the position where the receiving plate is installed in the moving body 10, and the wireless charging device ( 200), the position of the transmission plate may be adjusted using a position adjustment model secured in advance by applying machine learning to the reference position of the transmission plate.

As described above, since the direction in which the movable object 10 enters to park in the movable object-only parking area 2 may change according to circumstances, the parking position of the movable object 10 on the power facility 20 is the movable object 10 ), and the location where the receiving plate is installed in the moving body 10 may also have a predetermined error for each moving body. That is, since the direction in which the movable body 10 enters to reach the power facility 20 and the position where the receiving plate is installed in the movable body 10 are variables that cause an alignment error between the transmitting plate and the receiving plate, this embodiment In an example, the position of the transmitting plate may be adjusted through machine learning using the above variables as inputs so that the transmitting plate and the receiving plate can be rapidly aligned coaxially.

Along with the above variables, the initial position of the transmission plate installed in the charging device 220 (ie, the position of the transmission plate at the time when the moving object 10 is parked in the parking area 2) should also be considered for machine learning. (That is, in order to determine the position to which the transmission plate should be adjusted using the position adjustment model, the reference position at which the position adjustment of the transmission plate starts must be considered in machine learning). Therefore, the control unit 224 of the charging device 220 determines the direction in which the mobile body 10 enters to reach the power facility 20, the position where the receiving plate is installed in the mobile body 10, and the transmission installed in the charging device 220. Transmitting through the position adjusting unit 225 using a position adjustment model obtained in advance based on machine learning that takes the reference position of the plate as an input and outputs the displacement of the transmission plate to be coaxially aligned with the receiving plate. The position of the plate can be adjusted.

According to another embodiment of the present invention, the position adjusting unit 225 moves or rotates the housing 210 including the charging device 220 in up, down, left, and right directions, thereby controlling the power transmission unit 223. It can be placed in an optimal charging state. At this time, the position adjusting unit 225 may be configured to move the charging device 220 with respect to a partial area or the entire area of the parking area 2 . Therefore, even when the power receiver 120 is placed in a position where charging is impossible at all, the position adjuster 225 can find an approximate position where charging is possible while moving throughout the parking area 2.

As described above, the position adjusting unit 225 may be configured to be movable in forward, backward, left, and right directions in order to move the charging device 220 in a horizontal direction. The positioning unit 225 may include, for example, a rail, a wheel moving on the rail, and a motor driving the wheel, including a vertical positioning unit and a left-right positioning unit moving on the vertical positioning unit. can do. However, this is only an example, and a device having a different well-known driving principle may be used as the position adjusting unit 225 .

On the other hand, the charging device 220 may further include a regulation unit 226 that regulates the charging power supplied to the power transmission unit 223, and the regulation unit 226 controls the charging power to the power transmission unit 223. It can be implemented as an open/close switch connected on a supply line. Accordingly, the intermittent unit 226 may be short-circuited so that charging power is supplied to the power transmission unit 223 when charging of the battery mounted in the mobile body 10 is started under the control of the control unit 224, and the mobile body 10 ) When charging of the battery mounted on the battery is completed, the charging power supplied to the power transmission unit 223 may be opened to be cut off. Accordingly, power loss of the charging device 220 may be reduced and energy efficiency may be increased.

Under the control of the control unit 224, the notification unit 227 may output a signal indicating that the parking area 2 is exclusively for charging mobile bodies or output a signal indicating whether charging of the mobile bodies 10 is possible.

For example, when the charging device 220 is horizontally positioned on the ground, the notification unit 227 may output a signal indicating that the parking area 2 is exclusively for charging mobile vehicles. In addition, when the moving object 10 sensed through the sensing unit 221 is authenticated, the notification unit 227 may output a signal indicating that charging is possible because the moving object 10 has been authenticated. In addition, when the moving object 10 detected by the sensing unit 221 is an unauthenticated mobile object 10, the notification unit 227 outputs a signal indicating that charging is not possible because it is an unauthenticated mobile object 10. can

The notification unit 227 may be implemented with a display unit (not shown), an audio unit (not shown), an LED, and a human machine interface (HMI).

The power supply unit 228 is the operating power of the wireless charging device 200 based on the AC power of two or more phases of the three-phase (R, S, T) power from the power facility 20 that can be implemented as a ground transformer (that is, , Each sub-component of the wireless charging device 200) can be supplied. By supplying operating power of the wireless charging device 200 based on AC power of two or more phases, when one phase fails to supply power, operating power can be continuously supplied using the power of the remaining phases.

11 is a flowchart illustrating a wireless charging method according to an embodiment of the present invention.

Referring to FIG. 11, in a state in which the charging device 220 is positioned vertically on the ground to indicate that it is an electric vehicle parking area 2 (S1110), when a moving object 10 is detected (S1120), the wireless charging device 200 ) determines whether the detected moving object 10 is the authenticated moving object 10 (S1130). At this time, when the detected moving object 10 corresponds to the type of moving object stored in the storage unit 222, the wireless charging device 200 may determine the detected moving object 10 as the authenticated moving object 10.

As a result of determination in step S1130, if the detected moving object 10 is the authenticated moving object 10, the wireless charging device 200 controls the driving unit 230 to position the charging device 220 vertically on the ground (S1140 ). At this time, the wireless charging device 200 may adjust the position of the transmission plate by monitoring the point where the load current of the transmission coil is maximized so that the transmission plate is coaxially aligned with the reception plate of the mobile body 10 . That is, the wireless charging device 200 may place the power transmitter 223 in an optimal charging state by moving or rotating the power transmitter 223 .

When step S1140 is performed, the wireless charging device 200 transmits charging power through the power transmitter 223 to the power receiver of the mobile body 10 based on the charging power generated based on the power from the power facility 20 ( 120) to charge the battery (S1150).

After charging of the battery is completed, the wireless charging device 200 stores charging completion information including moving object identification information, a charge amount of the battery, and a charging progress time (S1160). After the battery charge is completed, if the moving object 10 is not detected, the wireless charging device 200 may position the charging device 220 in a vertical direction on the ground.

If, as a result of the determination in step S1130, if the detected moving object 10 is not the authenticated moving object 10, the wireless charging device 200 outputs a signal informing that it is not an authenticated moving object through the notification unit 227 (S1170). ). At this time, the charging device 220 may be positioned in a vertical direction on the ground.

As described above, the wireless charging device 200 and method according to an embodiment of the present invention automatically recognizes the authenticated moving object 10 through the sensing unit 221, and wirelessly detects the authenticated moving object 10. By charging with, it is possible to solve the parking dispute of the mobile body 10 and the hassle of wired charging.

In the wireless charging device 200 and method according to an embodiment of the present invention, since the charging device is normally placed vertically on the ground, it is possible to fundamentally prevent metal foreign substances from being attached to the power transmitter 223. .

The wireless charging device and method according to an embodiment of the present invention can automatically recognize and charge a moving object 10, so that parking, charging, and billing can be comprehensively unmanned.

The present invention has been described with reference to the embodiments shown in the drawings, but this is only exemplary, and those skilled in the art can make various modifications and equivalent other embodiments. will understand

Therefore, the true technical protection scope of the present invention should be determined by the claims below.

10: mobile body
20: power equipment
100: wireless power receiving device
110: Communication Department
120: power receiving unit
130. 224: control unit
200: wireless charging device
210: housing
220: charging device
221: sensing unit
222: storage unit
223: power transmission unit
225: position adjustment unit
226: control department
227: notification unit
228: power supply
230: driving unit
240: support

Claims (1)

housing;
a charging device formed inside the housing and wirelessly transferring the charging power to the mobile body so that the battery of the mobile body can be charged based on the charging power generated based on the power from the power facility;
Supports fixed to the ground; and
A drive unit that is hinged between the housing and the support and rotates the housing to raise or lower the charging device,
The charging device,
a sensing unit that senses the moving object;
a control unit that determines whether the detected moving object is an authorized moving object, and controls the driving unit according to the determination result to raise or lower the charging device; and
A power transmitter for wirelessly transmitting power to the mobile body;
The mobile body,
a power receiver wirelessly receiving charging power from the charging device;
a communication unit that communicates with the charging device; and
And a control unit for transmitting unique identification information of the moving object to the charging device through the communication unit,
The power receiver,
A wireless charging device comprising a receiving plate installed with a receiving coil in which an induced voltage is generated by a load current applied to the transmitting coil of the charging device.

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