KR102486155B1 - Wireless charger, vehicle having the same and method for controlling the same - Google Patents

Abstract

The present invention relates to a vehicle provided with a wireless charging device and a method for controlling the vehicle. A wireless charging device provided in a vehicle of the present invention includes a coil for wirelessly charging a terminal; a communication unit receiving user's getting off information from the vehicle; an electric field detection unit for detecting electric field strength of a received signal received by the coil; Check the electric field strength of the received signal detected by the electric field detection unit before the user gets off, and when the user's getting off information is received, check the electric field strength of the received signal detected by the electric field detector after the user gets off, and check the electric field strength before and after the user gets off. If is the same, a control unit for controlling the output of notification information for the terminal's absence; and a sound output unit that outputs notification information about the terminal's absence as a sound.

Description

Wireless charging device, vehicle having the same and method for controlling the same {Wireless charger, vehicle having the same and method for controlling the same}

The present invention relates to a wireless charging device for wirelessly charging a terminal, a vehicle having the same, and a control method thereof.

A vehicle is a machine that moves on a road by driving wheels, and includes an engine, a power transmission device that receives power from the engine and transmits it to the wheels, a steering device that adjusts the driving direction of the vehicle, and impact on the road surface while driving. It includes a suspension device that blocks transmission to the vehicle.

Such a vehicle further includes electronic devices such as a hands-free device, a GPS receiver, a Bluetooth device, and a high-pass device installed for the driver's convenience, and a communication device for communicating with an external terminal and a charging device for charging an external terminal more includes

A conventional charging device is a wired charging device, and when an external terminal is connected by a cable, power for charging is supplied to the terminal through a cable.

Such a wired charging device has the inconvenience of requiring a user to manually connect an external terminal through a cable.

For this reason, in recent years, a wireless charging device that does not require a wire has been actively developed.

One aspect is a wireless charging device that communicates with a terminal, recognizes the location of a terminal based on the electric field strength of a received signal of a communication signal with the terminal, and outputs notification information corresponding to the location of the terminal, a vehicle having the same, and control thereof. provides a way

Another aspect provides a wireless charging device for switching a charging mode to a communication mode based on ignition off, door opening, and door locking, a vehicle having the same, and a control method thereof.

A wireless charging device according to an aspect includes a coil for wirelessly charging a terminal; a communication unit receiving user's getting off information from the vehicle; an electric field detection unit for detecting electric field strength of a received signal received by the coil; Check the electric field strength of the received signal detected by the electric field detection unit before the user gets off, and when the user's getting off information is received, check the electric field strength of the received signal detected by the electric field detector after the user gets off, and check the electric field strength before and after the user gets off. If is the same, a control unit for controlling the output of notification information for the terminal's absence; and a sound output unit that outputs notification information about the terminal's absence as a sound.

The user's getting off information includes at least one of vehicle door opening/closing information, vehicle door locking/unlocking information, and vehicle start information.

When door opening information is received, the control unit of the wireless charging device performs a communication mode using a coil, stores the electric field strength of the received signal detected by the electric field detector during the communication mode as a first strength, and stores the door closing information as a first strength. When received, the electric field strength of the received signal detected by the electric field detection unit is stored as a second strength, and if the first strength and the second strength are identical, output of notification information about the unknown location of the terminal is controlled.

When door unlocking information is received, the control unit of the wireless charging device performs a communication mode using a coil, stores the electric field strength of the received signal detected by the electric field detector during the communication mode as a first strength, and stores the door lock information. When is received, the electric field strength of the received signal detected by the electric field detection unit is stored as a second strength, and if the first strength and the second strength are the same, controlling the output of notification information about the terminal's absence.

The control unit of the wireless charging device includes performing a charging mode using a coil when starting information corresponding to an ignition-on state of the vehicle is received.

The wireless charging device according to an aspect further includes a display unit displaying notification information regarding the terminal's non-possession.

A wireless charging device according to one aspect generates an AC voltage corresponding to a control command of a first driving unit and a controller for applying a current to a coil so that an electromagnetic field is formed around the coil, and the generated AC voltage is passed through the coil. A second driving unit configured to emit electromagnetic waves and converting the received electromagnetic waves into AC voltage when the electromagnetic waves are received through the coil, wherein the control unit controls driving of the first driving unit when performing a charging mode using the coil, and controlling driving of the second driver when performing a communication mode using a coil.

A vehicle according to another aspect includes an opening/closing detection unit configured to detect opening/closing of a door; a starting unit receiving start-off information; It includes a coil for wirelessly charging the terminal and an electric field detector for detecting the electric field strength of a received signal received by the coil, and when the ignition off information is received, the door is opened based on the door open/close information detected by the open/close detector. Obtaining the electric field strength of the received signal detected at the time of closing the door and the electric field strength of the received signal detected when the door is closed, and controlling the output of notification information for the terminal's absence when the obtained electric field strength of the two received signals is the same. charging device; and a sound output unit that outputs notification information about the terminal's absence as a sound.

A wireless charging device for a vehicle according to another aspect performs a communication mode using a coil when ignition-off information is received, requests output of a response signal from a terminal during execution of the communication mode, and receives a received signal when the response signal is received from the terminal. It includes checking the electric field strength of

A wireless charging device for a vehicle according to another aspect includes performing a charging mode using a coil when vehicle start-on information is received.

A wireless charging device for a vehicle according to another aspect further includes a display unit displaying notification information regarding the terminal's absence.

A wireless charging device for a vehicle according to another aspect includes a first driving unit for applying a current to a coil so that an electromagnetic field is formed around the coil, an AC voltage corresponding to a control command is emitted as electromagnetic waves through the coil, and When an electromagnetic wave is received through a second driving unit that converts the received electromagnetic wave into an AC voltage, controls driving of the first driving unit when performing a charging mode using a coil, and performs a communication mode using a coil, the second driving unit converts the received electromagnetic wave into an AC voltage. A control unit for controlling driving is included.

A wireless charging device for a vehicle according to another aspect includes a lock detection unit configured to detect locking and unlocking of a door; a starting unit receiving start-off information; It includes a coil for wirelessly charging the terminal and an electric field detector for detecting the electric field strength of a received signal received by the coil, and when the ignition off information is received, the door is unlocked based on the detection information detected by the lock detector. The electric field strength of the detected received signal and the electric field strength of the received signal detected when the door is locked are acquired, and if the obtained electric field strength of the two received signals is the same, wireless charging controls the output of notification information about the absence of the terminal. Device; and

A vehicle according to another aspect includes a sound output unit that outputs notification information about the absence of a terminal through sound.

According to another aspect, a wireless charging device for a vehicle performs a communication mode using a coil when ignition off information is received, requests output of a response signal from a terminal during execution of the communication mode, and receives a response signal from the terminal when the response signal is received. It involves checking the electric field strength of the signal.

A wireless charging device for a vehicle according to another aspect includes performing a charging mode using a coil when vehicle start-on information is received.

A vehicle according to another aspect further includes a display unit displaying notification information regarding the absence of the terminal.

A method for controlling a vehicle according to another aspect is a method for controlling a vehicle equipped with a wireless charging device for wirelessly charging a terminal, controlling a charging mode of the wireless charging device when vehicle start-on information is received, and the vehicle is If it is determined that the vehicle is stopped, the communication mode of the wireless charging device is controlled, the electric field strength of the received signal received through the coil provided in the wireless charging device is determined, whether the user is getting off or not, and when it is determined that the user is getting off, the user's When getting off, the electric field strength of the received signal received through the coil of the wireless charging device is checked, and if it is determined that the electric field strength of the received signal before and after getting off the user is the same, notification information about the absence of the terminal is output.

Determining whether or not the user gets off includes detecting an operating state of a door provided in the vehicle and determining that the user has got off when the door is switched from an open state to a closed state.

Determining whether or not the user got off the vehicle includes detecting the locked and unlocked state of a door provided in the vehicle, and determining that the user has gotten off the vehicle when the door is switched from an unlocked state to a locked state.

Determining that the vehicle is in a stopped state includes determining that the vehicle is in a stopped state when vehicle ignition off information is received.

Determining that the vehicle is in a stop state includes checking the driving speed of the vehicle and the position of the shift lever, and determining that the vehicle is in a stop state when the driving speed of the vehicle is zero and the position of the shift lever is in the parking stage (P range). do.

Determining that the electric field strength of the received signal before and after the user gets off is the same is to check the difference in electric field strength before and after the user gets off, and if the difference in electric field strength is less than the reference value, the electric field strength of the received signal before and after the user gets off is the same. including judging that

Outputting notification information about the terminal's absence includes controlling the output of notification information about the terminal's absence by controlling an operation of at least one of a sound output unit and a display unit provided inside the vehicle.

According to the present invention, communication between a wireless charging device and a terminal can be performed by using a coil of a wireless charging device as a radiator without mounting a separate antenna. Accordingly, it is possible to reduce the cost of installing an antenna for communication with a terminal when manufacturing a vehicle.

The present invention can perform communication with a terminal by switching the charging mode of a wireless charging device to a communication mode when the ignition is turned off, the vehicle door is opened, or the vehicle door is locked, based on the received signal field strength according to communication with the terminal. Thus, the location of the terminal can be recognized, and information on the location of the terminal can be output to the user according to the terminal location recognition result.

Therefore, the present invention can prevent the user from leaving the terminal in the vehicle, thereby improving user convenience.

The present invention communicates with a remote control device (eg, smart key, fob key, etc.) as well as a terminal using a coil of a wireless charging device, so that when the vehicle is turned off, the vehicle door is opened, or the vehicle door is locked. The location of the remote control device can be recognized and notification information about the location of the remote control device can be output to the user.

Therefore, the present invention can prevent the user from leaving the remote control device inside the vehicle.

The present invention can reduce the installation cost of an antenna for recognizing a remote control device.

In this way, the present invention can improve the quality and marketability of a wireless charging device and a vehicle having the same, furthermore, it is possible to increase user satisfaction and secure product competitiveness.

1 is an exemplary external view of a vehicle according to an embodiment.
2 is an exemplary interior view of a vehicle according to an exemplary embodiment.
3 is an exemplary view of a wireless charging device provided in a vehicle according to an embodiment.
4 is a structural diagram of a wireless charging device provided in a vehicle according to an embodiment.
5 is a control configuration diagram of a vehicle according to an exemplary embodiment.
6A and 6B are diagrams illustrating charging principles of a wireless charging device provided in a vehicle according to an exemplary embodiment.
7 is a configuration diagram of a second driving unit of a wireless charging device provided in a vehicle according to an embodiment.
8 is a control flowchart of a vehicle according to an exemplary embodiment.
9 is a control configuration diagram of a vehicle according to another embodiment.

Like reference numerals designate like elements throughout the specification. This specification does not describe all elements of the embodiments, and general content in the technical field to which the present invention belongs or overlapping content between the embodiments is omitted. The term 'unit, module, member, or block' used in the specification may be implemented as software or hardware, and according to embodiments, a plurality of 'units, modules, members, or blocks' may be implemented as one component, It is also possible that one 'part, module, member, block' includes a plurality of components.

Throughout the specification, when a part is said to be "connected" to another part, this includes not only the case of being directly connected but also the case of being indirectly connected, and indirect connection includes being connected through a wireless communication network. do.

In addition, when a certain component is said to "include", this means that it may further include other components, not excluding other components unless otherwise stated.

Terms such as first and second are used to distinguish one component from another, and the components are not limited by the aforementioned terms.

Expressions in the singular number include plural expressions unless the context clearly dictates otherwise.

In each step, the identification code is used for convenience of description, and the identification code does not explain the order of each step, and each step may be performed in a different order from the specified order unless a specific order is clearly described in context. there is.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is an exemplary external view of a vehicle according to an embodiment, and FIG. 2 is an exemplary internal view of a vehicle according to an exemplary embodiment.

The vehicle 100 includes a body having an interior and an exterior, and a chassis on which mechanical devices necessary for driving are installed except for the body.

As shown in FIG. 1, the exterior 110 of the vehicle body includes a front panel 111, a bonnet 112, a roof panel 113, a rear panel 114, a trunk 115, front and rear doors 116, front and rear A window glass 117 is provided on the left and right doors 116 to be openable and closed.

An opening/closing unit for opening or closing the door and a locking unit for locking or unlocking the door may be provided on the front, rear, left and right doors 116 .

In addition, the exterior of the vehicle body includes a front panel, a bonnet, a roof panel, a rear panel, a trunk, and a pillar 118 provided at the boundary between the window glasses of the front, rear, left, and right doors, and a side mirror that provides a driver with a view of the rear of the vehicle 100 ( 119) is further included.

As shown in FIG. 2, the interior 120 of the vehicle body includes a seat 121 on which the occupant sits, a dashboard 122, and a tachometer, speedometer, coolant temperature gauge, fuel gauge, direction change indicator, etc. , high beam indicator, warning lamp, seat belt warning lamp, odometer, odometer, automatic shift selection lever indicator, door open warning lamp, engine oil warning lamp, instrument panel (ie, cluster, 123) arranged with low fuel warning lamp, air conditioner It includes a center fascia 124 in which an air outlet and a control plate are disposed and an audio device is disposed.

A head unit 125 for controlling an audio device, an air conditioner, and a heater, and a multi-terminal 126 to which external terminals are connected may be installed in the center fascia 124.

The multi-terminal 126 may be disposed adjacent to the head unit 125, include a USB port and an AUX terminal, and may further include an SD slot.

This multi-terminal 126 functions as a communication interface for communication between the vehicle and an external terminal, and also performs a charging function for charging the external terminal in a wired manner.

The vehicle 100 may further include an input unit 127 for receiving operation commands of various functions and a display unit 128 for displaying operation information of various functions and information input by a user.

The input unit 127 includes at least one physical button, such as an on/off button for operating various functions and a button for changing set values of various functions.

The chassis of the vehicle is a frame supporting the body, and includes a plurality of wheels 131, a steering wheel 132 of a steering device connected to the inside of the vehicle, a brake pedal 133 that is pressed by the user according to the user's will to brake, and , an accelerator pedal 134 that is pressed by the user according to the user's will to accelerate.

The chassis of the vehicle further includes driving devices for applying driving force and braking force to front and rear left and right wheels, such as a power generating device, a power transmission device, a steering device, a braking device, a suspension device, and a transmission device.

Here, the power generating device may include an engine, a fuel device, a cooling and refueling device, and an electric device.

In addition, various safety devices may be provided in the vehicle for the safety of the driver and passengers.

Vehicle stability devices include an airbag control device for the purpose of safety of passengers such as the driver in the event of a vehicle collision, an electronic stability control (ESC) device that controls the vehicle posture during vehicle acceleration or cornering, and tire air pressure. There are several types of safety devices such as monitoring devices (TPMS).

The vehicle 100 includes an electronic control unit (ECU) that controls driving of a driving device, various safety devices, and various detection devices.

The vehicle 100 may further include a start button 129 for inputting an operation command to a starter motor (not shown).

When the start button is turned on, the vehicle 100 operates a starter motor (not shown) and drives an engine (not shown), which is a power generating device, through the operation of the starter motor.

The vehicle 100 further includes a battery (not shown) electrically connected to audio devices, interior lights, a starting motor, and other electronic devices to supply driving power. The battery is charged using its own generator or engine power while driving.

In addition, the vehicle 100 further includes electronic devices such as a hands-free device installed for the driver's convenience, a GPS receiver, an audio device, a Bluetooth device, and a high-pass device.

As shown in FIG. 3 , the vehicle may further include a wireless charging device 200 for charging at least one of an external terminal and a smart key.

The wireless charging device 200 wirelessly charges a terminal, and may employ at least one of a magnetic induction method, a magnetic resonance method, and a microwave method.

In this embodiment, a magnetic induction type wireless charging device will be described.

The wireless charging device 200 generates an electromagnetic field when charging the terminal 300 wirelessly, so that the terminal 300 is charged by electromagnetic induction between the terminal 300 and the terminal 300 .

When the wireless charging device 200 transmits a signal during communication with the terminal 300, the AC voltage modulated by the transmitting unit is radiated into the air as electromagnetic waves, and when receiving a signal, the electromagnetic wave is converted into an AC voltage evaluated by the receiving unit. It operates as a communication module of an antenna type that

The wireless charging device 200 communicates with the user terminal 300, checks the signal electric field strength of the received signal when communicating with the terminal, and recognizes a positional change of the terminal based on the checked signal electric field strength.

4 is an exemplary diagram of a wireless charging device 200 provided in a vehicle according to an embodiment.

The wireless charging device 200 includes a main body 210 that is recessed from one surface of the center fascia 124 to form a seating portion.

The body 210 of the wireless charging device is provided on the center fascia 124, and may be provided on a portion formed in a horizontal plane so that the terminal or smart key can be stably seated.

Here, the part formed on the horizontal plane may be a position around the shift lever in the area of the center fascia.

The main body 210 of the wireless charging device includes a pad 211 forming a bottom surface and on which a chargeable device is seated, and a side surface connecting the outer edge of the pad 211 and one surface of the center fascia.

Here, the side surface may be formed in a circular shape or a polygonal shape according to the shape of the pad 211 .

The wireless charging device 200 further includes a coil unit 220 buried inside the lower side of the pad. Here, the coil unit 220 includes a first coil 221 and a second coil 222 provided on one side of the first coil 221 .

In this embodiment, the coil couple has two coils, but may include one or three or more coils depending on the embodiment.

The coil of the coil unit 220 generates an electromagnetic field when a current is applied when the wireless charging device performs a charging mode.

That is, the first coil and the second coil of the coil unit 220 receive power from the power supply unit and form electromagnetic fields, respectively.

The coil of the coil unit 220 generates electromagnetic waves when the wireless charging device performs a communication mode.

5 is a control configuration diagram of a vehicle having a wireless charging device according to an embodiment.

The vehicle includes an open/close detection unit 140, a lock detection unit 150, a starting unit 160, and a wireless charging device 200.

The opening/closing detector 140, the lock detector 150, and the starter 160 are components that recognize the operating state of the vehicle in order to determine the user's intention to get off the vehicle.

The opening/closing detection unit 140 is provided in each of the opening/closing parts of the front, rear, left, and right doors, detects the operating state of each opening/closing unit, and transmits door opening/closing information corresponding to the operating state of each opening/closing unit to the wireless charging device 200. That is, the open/close detection unit 140 transmits open/closed information about the open state and closed state of each door to the wireless charging device 200 .

This embodiment may include only an open/close detection unit for detecting an operating state of an open/close unit of a door provided in a driver's seat.

The lock detection unit 150 is provided in each of the locking parts of the front, rear, left, and right doors, detects the operating state of each locking unit, and transmits door locking information corresponding to the operating state of each locking unit to the wireless charging device 200. That is, the lock detection unit 150 transmits door lock information about the locked and unlocked states of each door to the wireless charging device 200 .

The present embodiment may include only a lock detection unit for detecting an operating state of a lock unit of a door provided in a driver's seat.

The starter 160 acquires a start-on state and a start-off state corresponding to the operating state of the start button 129, and transmits the obtained start-up information to the wireless charging device 200.

The starting unit 160 may also obtain an operating state of a key inserted into a key box (not shown).

The wireless charging device 200 communicates with at least one of the opening/closing detection unit 140, the locking detection unit 150, and the starting unit 150, and the opening/closing information of the opening/closing detection unit 140 and the lock information of the locking detection unit 150. and at least one of the starting information of the starter 150 to recognize the driver's getting off, and if it is recognized as the driver's getting off, the location change of the terminal 300 is checked and notification information about the location of the terminal is output. .

The wireless charging device 200 includes a coil unit 220, a communication unit 230, an electric field detection unit 240, a control unit 250, a storage unit 251, a first driving unit 260, a second driving unit 270, A display unit 280 and a sound output unit 290 are included.

The coil unit 220 includes one or more coils, and forms an electromagnetic field for charging the terminal according to a driving command of the first driving unit, or generates electromagnetic waves for communication with the terminal according to a driving command of the second driving unit. Emit and receive.

The communication unit 230 communicates with at least one of the opening/closing detection unit 140, the lock detection unit 150, and the starter 160, and provides opening/closing information from the opening/closing detection unit 140, lock information from the lock detection unit 150, and start-up. The start information of the unit 160 is transmitted to the control unit 250.

The communication unit 230 may receive at least one of the opening/closing information of the opening/closing detection unit 140, the locking information of the locking detection unit 150, and the starting information of the starting unit 160 as driver's getting off information.

The communication unit 230 may also perform communication with various electronic devices provided in the vehicle.

The communication unit 230 may include one or more components enabling communication with various electronic devices inside the vehicle, and may include, for example, at least one of a short-distance communication module, a wired communication module, and a wireless communication module.

The short-range communication module uses a wireless communication network such as a Bluetooth module, an infrared communication module, a Radio Frequency Identification (RFID) communication module, a Wireless Local Access Network (WLAN) communication module, an NFC communication module, and a Zigbee communication module to transmit signals at a short distance. It may include various short-range communication modules that transmit and receive.

Wired communication modules include various wired communication modules, such as Controller Area Network (CAN) communication modules, Local Area Network (LAN) modules, Wide Area Network (WAN) modules, or Value Added Network (VAN) modules. In addition to communication modules, various cable communications such as USB (Universal Serial Bus), HDMI (High Definition Multimedia Interface), DVI (Digital Visual Interface), RS-232 (recommended standard 232), power line communication, or POTS (plain old telephone service) modules may be included.

The electric field detection unit 240 detects the electric field strength of the received signal in the communication mode of the wireless charging device.

The electric field detection unit 240 may include an electric field strength measurer for detecting the intensity of the electromotive force induced in the coil unit.

The controller 250 determines whether the vehicle is in a stopped state, determines whether the driver gets off when the vehicle is in a stopped state, recognizes a change in the location of the terminal when it is determined that the driver has gotten off, and recognizes a change in the location of the terminal when it is determined that the location of the terminal is the same. An operation of at least one of the display unit and the sound output unit is controlled to output notification information regarding getting off the vehicle without a driver.

The control unit 250 may determine whether the vehicle is in a stopped state based on start information of the start unit. That is, the control unit 250 may determine that the vehicle is stopped based on the starting information of the starting unit 160 and determines that the vehicle is in the off state.

The controller 250 may determine whether the driver intends to get off based on at least one of an open/closed state and a locked state of the door.

More specifically, the controller 250 determines whether the door is open or closed based on the open/close information detected by the open/close detection unit 140, and determines that the driver has gotten off when it is determined that the door is switched from the open state to the closed state. .

The control unit 250 determines whether the door is locked or unlocked based on the lock information detected by the lock detection unit 150, and determines that the driver has gotten off when it is determined that the door is switched from the unlocked state to the locked state.

The control unit 250 checks the open/closed state of the door when the vehicle is in an off state, controls the operation mode of the wireless charging device to a communication mode when it is determined that the door is open, and performs communication with the terminal during the communication mode, During communication with the terminal, the electric field strength of the received signal detected by the electric field detection unit is checked, and the checked electric field strength is stored as the first strength.

When it is determined that the door is changed to the closed state based on the detection information detected by the open/close detection unit 140, the control unit 250 checks the electric field strength of the received signal detected by the electric field detector during communication with the terminal, and confirms the checked electric field strength. is stored as the second century.

The control unit 250 compares the first strength and the second strength corresponding to the change in the open/closed state of the door to obtain a difference between the first and second strength, and if the obtained difference exceeds a reference value, the position of the terminal is changed. If it is determined that the terminal has changed, and the difference between the acquired intensities is less than or equal to the reference value, it is determined that the positions of the terminals are the same.

When it is determined that the locations of the terminals are the same, the controller 250 determines that the terminals are located inside the vehicle and controls the output of notification information regarding the absence of the terminals.

In addition, the control unit 250 checks the locked state of the door when it is determined that the vehicle is in an off state, and controls the operation mode of the wireless charging device to a communication mode when it is determined that the door is unlocked, and communicates with the terminal during the communication mode. communication is performed, the electric field strength of the received signal detected by the electric field detector during communication with the terminal is checked, and the checked electric field strength is stored as the first strength.

When it is determined that the door is changed to the locked state based on the detection information detected by the lock detector, the control unit 250 checks the electric field strength of the received signal detected by the electric field detector during communication with the terminal, and converts the checked electric field strength into a second Save as century.

The control unit 250 obtains a difference between the first strength and the second strength corresponding to the change in the locked state of the door, and determines that the position of the terminal has changed when the obtained difference in strength exceeds a reference value, and determines that the acquired strength difference If is less than the reference value, it is also possible to determine that the positions of the terminals are the same.

When communicating with the terminal 300, the controller 250 requests the terminal 300 to output a response signal, and when the response signal is received from the terminal 300, checks the electric field strength of the received signal for the received response signal. That is, the controller 250 checks the electric field strength of the signal detected by the electric field detector 240 .

The control unit 250 controls driving of the first driving unit when performing a charging mode using a coil, and controls driving of a second driving unit when performing a communication mode using a coil.

More specifically, when the operation mode of the wireless charging device is the charging mode, the control unit 250 controls the operation of the power supply unit (not shown) and the first driving unit so that current is applied to the coil of the coil unit.

The principle of wireless charging of a terminal using the wireless charging device 200 will be described with reference to FIGS. 6A and 6B.

6A and 6B are diagrams showing the structure of a coil of a wireless charging device and a coil of a terminal and directions of electromagnetic fields in these structures.

The wireless charging device 200 includes at least one coil 221 for transmitting wireless power to the terminal 300, and the terminal 300 also includes at least one coil 310 for generating wireless power. .

The wireless charging device 200 of the vehicle transfers the power of the power supply unit to the coil 221 of the coil unit 220 . At this time, current flows through the coil 221 of the coil unit, and an electromagnetic field is formed around the coil 221 by the current flowing through the coil.

When the terminal 300 approaches the electromagnetic field of the wireless charging device, an electromagnetic field is generated around the coil unit 310 of the terminal under the influence of the electromagnetic field of the coil 221 of the wireless charging device, and by this electromagnetic field, the coil unit ( 310), an induced current flows, and the terminal 300 is charged by this induced current.

Such a terminal 300 may include a battery (not shown) for storing wireless power.

When the operation mode of the wireless charging device is the charging mode, the control unit 250 checks the transmission power requested by the terminal, checks the current corresponding to the checked transmission power, and controls the operation of the power supply unit (not shown) so that the checked current is generated. You can control it.

The controller 250 switches the operation mode of the wireless charging device to the charging mode when the vehicle is in an on-state. At this time, the control unit 250 controls driving of the first driving unit 260 .

The controller 250 may also switch the operation mode of the wireless charging device to the communication mode when the vehicle is in an off state. At this time, the control unit 250 controls driving of the second driving unit 270 .

Although the controller of this embodiment has been described as being provided in the wireless charging device, it may be provided in the vehicle.

That is, the control unit 250 includes a memory (not shown) storing data for an algorithm or a program reproducing the algorithm for controlling the operation of components in the vehicle, and a processor performing the above-described operation using the data stored in the memory. (not shown) may be implemented. In this case, the memory and the processor may be implemented as separate chips. Alternatively, the memory and the processor may be implemented as a single chip.

The storage unit 251 stores identification information of the terminal and stores the electric field strength of a received signal when communicating with the terminal 300 .

That is, the storage unit 251 may store the electric field strength when the door is opened as the first strength and the electric field strength when the door is closed as the second strength.

In addition, the storage unit 251 may store the electric field strength when the door is unlocked as the first strength and store the electric field strength when the door is closed and locked as the second strength.

The storage unit 251 may include nonvolatile memory devices such as cache, read only memory (ROM), programmable ROM (PROM), erasable programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), and flash memory or RAM. It may be implemented as at least one of a volatile memory device such as (Random Access Memory), a hard disk drive (HDD), or a storage medium such as a CD-ROM, but is not limited thereto. The storage unit may be a memory implemented as a separate chip from the processor described above in relation to the control unit, or may be implemented as a single chip with the processor.

The first driving unit 260 may include a full-bridge or half-bridge rectification unit and an inverter unit having at least one switch element.

The first driving unit 260 converts the DC power of the power supply unit into AC power by turning on and off the switching element of the inverter unit based on the command of the control unit 250, and converts the switching element of the switching element according to the control command of the control unit 250. By adjusting the duty ratio, the intensity of current supplied to at least one coil 221 of the coil unit may be adjusted.

The first driving unit 260 forms an electromagnetic field through at least one coil of the coil unit 220 .

The power supply unit (not shown) of the present embodiment may supply power to the coil of the coil unit 220, but may supply power capable of generating transmission power requested by the terminal based on a command of the control unit 250.

The power supply unit may be connected to a battery provided in the vehicle to receive power from the battery.

The power supply unit may simultaneously supply power to the first coil and the second coil of the coil unit, or may supply power only to a coil selected by a user among the first coil and the second coil.

Also, the power supply unit may supply power only to the coil selected by the control unit 250 . The power supply unit may further include a switch for selectively supplying power to the first coil and the second coil.

The second driving unit 270 emits electromagnetic waves through the coil of the coil unit based on the control command of the controller 250 and receives the electromagnetic waves through the coil of the coil unit.

As shown in FIG. 7 , the second driving unit 270 includes a signal processing unit 271 , a transmission unit 272 and a reception unit 273 .

The signal processing unit 271 converts the digital communication signal transmitted from the control unit 250 into an analog communication signal, and transmits the converted analog communication signal to the transmission unit 272 .

Here, the digital communication signal may include data.

The analog communication signal may be a low frequency communication signal.

The signal processor 271 converts the analog communication signal transmitted from the receiver 273 into a digital communication signal, and transfers the converted digital communication signal to the control unit 250 .

The signal processing unit 271 may include an ADC that converts an analog communication signal into a digital communication signal.

The signal processing unit 271 may also remove noise of the received communication signal.

The transmitter 272 uses a radio frequency (RF) signal of a local oscillator (not shown) to modulate a low-frequency communication signal into a high-frequency communication signal, and converts the modulated high-frequency communication signal into a coil of the coil unit. output through

The receiver 273 demodulates the received high-frequency communication signal using a radio frequency (RF) signal of a local oscillator, and outputs the demodulated low-frequency communication signal to the signal processor 271.

That is, the coil of the coil unit radiates the communication signal to the free space through the transmitter 272 and transmits the communication signal received from the free space to the receiver 273 .

That is, the second driver radiates the AC voltage modulated by the transmitter 272 into the air as an electromagnetic wave, and converts the electromagnetic wave into AC voltage when received through the receiver 273 and transmits it to the control unit 250.

The second driving unit 270 may further include a selection unit (not shown).

The selection unit selects the transmission unit or the reception unit according to the selection signal of the control unit 250, receives the communication signal through the selected transmission unit and provides it to the coil, or receives the communication signal of the coil through the selected reception unit.

Here, the signal processing unit 271, the transmitting unit 272, and the receiving unit 273 may be implemented as one processor.

The second driving unit 270 may also adjust the communicable area by adjusting the wavelength of the frequency based on the control command of the control unit.

The display unit 280 may allow the user to carry the terminal and get off the vehicle by displaying notification information regarding the absence of the terminal when the user leaves the terminal in the vehicle.

The display unit 280 may include a lamp such as a light emitting diode, a flat panel display such as a liquid crystal display, and the like.

The display unit 280 may turn on or off a lamp.

It is also possible to output the notification information for not holding the terminal through the display unit 128 provided in the vehicle.

The display unit 128 provided in the vehicle may be a display unit provided on a head unit, a display unit provided on a cluster, or a display unit provided on a side mirror.

In addition, the vehicle may output notification information for possession of the terminal using a headlamp or the like.

The sound output unit 290 may allow the user to carry the terminal by outputting notification information regarding the absence of the terminal through sound when the user leaves the terminal in the vehicle.

The sound output unit 980 may include a speaker that outputs a warning sound or melody.

It is also possible to output the notification information for not holding the terminal through a sound output unit (not shown) provided in the vehicle.

The terminal 300 of this embodiment is a user terminal including a coil capable of wireless charging and a communication unit capable of communication, and may be implemented as a computer or portable terminal capable of accessing a vehicle through a network. Here, a computer includes, for example, a laptop, a desktop, a laptop, a tablet PC, a slate PC, etc. equipped with a web browser (WEB Browser), and a portable terminal is, for example, a wireless As a communication device, PCS (Personal Communication System), GSM (Global System for Mobile communications), PDC (Personal Digital Cellular), PHS (Personal Handyphone System), PDA (Personal Digital Assistant), IMT (International Mobile Telecommunication)-2000, All kinds of handheld-based wireless communication such as CDMA (Code Division Multiple Access)-2000, W-CDMA (W-Code Division Multiple Access), WiBro (Wireless Broadband Internet) terminal, smart phone, etc. It may include devices and wearable devices such as watches, rings, bracelets, anklets, necklaces, glasses, contact lenses, or head-mounted-devices (HMDs).

When the output request signal of the response signal is received from the wireless charging device 200, the terminal 300 transmits a response signal to the wireless charging device 200.

The terminal 300 may perform pairing with the wireless charging device when a pairing signal is received from the wireless charging device 200, and may transmit identification information to the wireless charging device during pairing.

8 is a control flowchart of a vehicle according to an exemplary embodiment.

The vehicle determines whether the engine is in an on-state based on the starting information of the starter unit, and when it is determined that the vehicle is in an on-start state (401), it transmits the startup information for the on-start state to the wireless charging device.

Determining whether the ignition is in the on state includes determining whether an ignition on signal is generated by an on operation of the start button.

The wireless charging device performs a charging mode when starting information about the starting-on state is received (402).

Here, performing the charging mode includes forming an electromagnetic field through at least one coil provided in the coil unit of the wireless charging device.

When a terminal is seated on a pad of a wireless charging device, the terminal may perform charging using an induced current generated in a coil of the terminal.

The vehicle determines whether the vehicle is in an ignition-off state based on the startup information of the starter 160 in the charging mode of the wireless charging device 200. It is determined whether the door is opened (404), and when it is determined that the door is opened, open information on the open state of the door is transmitted to the wireless charging device 200. In addition, the vehicle may transmit starting information about the ignition off state to the wireless charging device.

Determining whether the ignition is off includes determining whether a startup off signal is generated by an off operation of the start button.

And determining whether the door is open includes determining whether a door open signal is generated by the opening/closing detection unit.

The wireless charging device performs a communication mode when starting information about the ignition off state and open information about the door open state are received (405).

Here, that the door is open means that the driver intends to get out of the vehicle while turning off the engine. In addition, if the door is not opened, it means that the driver stays in the vehicle with the ignition of the vehicle turned off.

The wireless charging device performs communication with the terminal while performing the communication mode.

At this time, the wireless charging device requests output of a response signal from the terminal, and when a response signal is received from the terminal, the electric field strength of the received signal is checked (406), and the checked electric field strength is stored as the first strength.

Checking the electric field strength of the signal here includes checking the electric field strength of the signal detected by the electric field detector 240 .

The vehicle determines whether the door is closed based on the opening/closing information detected by the opening/closing detection unit (407), and transmits closing information about the closed state of the door to the wireless charging device 200 when it is determined that the door is closed.

Determining whether the door is closed includes determining whether a door closing signal is generated by the opening/closing detection unit.

When the door closing information is received during the communication mode, the wireless charging device requests the terminal to output a response signal, and when the response signal is received from the terminal, checks the electric field strength of the received signal (408) and removes the checked electric field strength. Save as 2nd century.

Such a wireless charging device may request an output of a response signal through the transmitter of the second driver and receive the response signal through the receiver of the second driver.

Checking the electric field strength of the signal here includes checking the electric field strength of the signal detected by the electric field detector 240 .

After the ignition is turned off, the wireless charging device compares the first and second intensities corresponding to the change in the open/closed state of the door, determines whether the first and second intensities are the same (409), and determines whether the first and second intensities are the same. If it is determined that they are the same, it is determined that the driver has gotten off the vehicle by placing the terminal inside the vehicle.

That is, when the wireless charging device determines that the first intensity and the second intensity are the same, the wireless charging device outputs notification information about not holding the terminal (410) so that the driver can know that the terminal is not held.

Outputting notification information about the terminal not being present can be done by displaying notification information through the display unit 280 of the wireless charging device, displaying notification information through the display unit 128 provided inside the vehicle, or displaying notification information through a lamp provided on a side mirror (not shown). It is also possible to display notification information through

Outputting the notification information about the terminal not being present is outputting the notification information as sound through the sound output unit 290 of the wireless charging device or outputting the notification information as sound through a sound output unit (not shown) provided inside the vehicle. It is also possible to do

When it is determined that the strength of the electric field before and after opening and closing the door has changed, the wireless charging device determines that the user is holding the terminal and gets off the vehicle, and switches the operation mode to a charging mode or to a standby mode.

In addition, the wireless charging device compares the first and second intensities to obtain a difference between the first and second intensities, and when the difference between the obtained intensities exceeds a reference value, it is determined that the position of the terminal has changed, and the obtained If the difference between is less than the reference value, it is also possible to determine that the positions of the terminals are the same.

9 is a control configuration diagram of a vehicle according to another embodiment.

A vehicle of another embodiment may include the wireless charging device 200, and may further include a speed detection unit 170, an occupant detection unit 180, and a sound output unit 190.

The speed detection unit 170 detects the speed of the vehicle and transmits the detected speed of the vehicle (ie, vehicle speed) to the wireless charging device 200 .

The speed detector 170 may include wheel speed sensors installed on each of a plurality of wheels, and obtain the speed of the vehicle based on wheel speeds detected by the plurality of wheel speed sensors.

The speed detector 170 may include an acceleration sensor that detects the acceleration of the vehicle, and may obtain the speed of the vehicle based on the detected acceleration.

The occupant detection unit 180 may be provided on a seat and seat belt of a vehicle.

The occupant detection unit 180 may include at least one of a weight detection unit, a pressure detection unit, a capacitance detection unit, and a safety belt fastening detection unit.

The starter 160 recognizes start-up information corresponding to the on- and off-actions of the start button.

The wireless charging device may communicate with at least one of a speed detection unit, an occupant detection unit, and a starting unit.

The wireless charging device may also determine that the vehicle is stopped and perform the communication mode when it is determined that the driving speed is zero or the position of the shift lever is in the parking stage (P range).

The wireless charging device 200 checks the electric field strength of the received signal in the communication mode, stores the checked electric field strength as the first strength, determines whether the driver gets off based on the information detected by the occupant detection unit 180, and If it is determined that has gotten off, the electric field strength of the received signal is checked and the checked electric field strength is stored as the second strength.

The wireless charging device 200 determines the change in intensity between the first intensity and the second intensity before and after the driver gets off, and determines that the terminal exists inside the vehicle when it is determined that the intensity of the two electric fields is the same.

The wireless charging device checks the open/closed state of the door when it is determined that the vehicle is stopped, performs a communication mode when it is determined that the door is open, checks the electric field strength of the received signal when the door is open, and indicates that the door has been switched to the closed state. If it is determined, it is also possible to check the electric field strength of the received signal when the door is closed, and determine whether the terminal exists inside the vehicle based on the change in electric field strength corresponding to the open/closed state of the door.

In addition, the wireless charging device acquires the difference between the first and second strengths corresponding to the open/closed state of the door, and if the difference between the acquired strengths is less than a reference value, it is determined that the positions of the terminals are the same, and the obtained differences in strengths determine the reference values. If it exceeds, it is also possible to determine that the position of the terminal has changed.

Here, that the locations of the terminals are the same means that the terminal exists inside the vehicle when the driver gets off without holding the terminal.

Also, that the location of the terminal has changed means that the location of the terminal has changed because the driver got off the vehicle while carrying the terminal.

The wireless charging device may perform a communication mode when the vehicle is in an on-state, and output notification information about riding without a terminal when communication with the terminal is impossible during the communication mode.

The wireless charging device recognizes the distance between the coil of the wireless charging device and the terminal based on the electric field strength of the received signal while performing the communication mode, and if the recognized distance is less than the reference distance, it is determined that the terminal exists inside the vehicle, If the recognized distance exceeds the reference distance, it is determined that the terminal exists outside the vehicle.

Here, that the terminal exists outside the vehicle means that the driver got off the vehicle while carrying the terminal.

The reference distance may be the distance between the wireless charging device and the driver's seat door.

The display unit 128 may be a display unit provided on a head unit or cluster of a vehicle.

The display unit 128 displays notification information about the possession of the terminal.

The sound output unit 190 may be a speaker installed in a vehicle.

The sound output unit 190 outputs notification information regarding the terminal's non-possession through sound.

100: vehicle 200: wireless charging device
210: main body 220: coil part
300: terminal

Claims (23)

A coil for wirelessly charging a terminal;
a communication unit receiving user's getting off information and start-on information from the vehicle;
an electric field detector detecting an electric field strength of a received signal received by the coil;
When the start-on information is received through the communication unit, a charging mode using the coil is performed, and when the user's getting off information is received through the communication unit, a communication mode using the coil is performed, and when the communication mode is performed , check the electric field strength of the received signal detected by the electric field detection unit before the user's getting off information is received, and check the electric field strength of the received signal detected by the electric field detection unit after the user's getting off information is received; a control unit controlling the output of notification information about the terminal's absence when the electric field strength before and after receiving the user's getting off information is the same; and
A wireless charging device comprising a sound output unit for outputting notification information about the terminal's absence as a sound. The method of claim 1, wherein the user's getting off information comprises:
A wireless charging device including at least one of door opening/closing information of the vehicle and locking/unlocking information of the vehicle door. The method of claim 2, wherein the control unit,
During the communication mode, the electric field strength of the received signal detected by the electric field detection unit is stored as the first strength, and when the door closing information is received, the electric field strength of the received signal detected by the electric field detection unit is stored as the second strength. and controlling the output of notification information for non-possession of the terminal when the first intensity and the second intensity are the same. The method of claim 2, wherein the control unit,
During the communication mode, the electric field strength of the received signal detected by the electric field detection unit is stored as the first strength, and when the door lock information is received, the electric field strength of the received signal detected by the electric field detection unit is stored as the second strength. and controlling the output of notification information for non-possession of the terminal when the first intensity and the second intensity are the same. delete According to claim 1,
Wireless charging device further comprising a display unit for displaying notification information on the absence of the terminal. According to claim 1,
A first driving unit for applying a current to the coil to form an electromagnetic field around the coil;
A second driving unit that generates an AC voltage corresponding to the control command of the control unit, causes the generated AC voltage to be emitted as an electromagnetic wave through the coil, and converts the received electromagnetic wave into an AC voltage when the electromagnetic wave is received through the coil. including,
The control unit controls driving of the first driving unit when performing a charging mode using the coil, and controls driving of the second driving unit when performing a communication mode using the coil. an opening/closing detection unit for detecting opening/closing of a door;
a starting unit receiving start-on information and start-off information;
A coil for wirelessly charging a terminal and an electric field detector for detecting an electric field strength of a received signal received by the coil, and when the start-on information is received, a charging mode using the coil is performed, and the start-off information When is received, a communication mode using the coil is performed, and based on the opening/closing information of the door detected by the opening/closing detecting unit during the communication mode, the electric field strength of the received signal detected when the door is opened and the electric field strength of the door a wireless charging device that obtains electric field strengths of received signals detected at the time of closing, and controls output of notification information about the terminal's absence when the obtained electric field strengths of the two received signals are the same; and
A vehicle comprising a sound output unit that outputs notification information about the terminal's absence as a sound. The method of claim 8, wherein the wireless charging device,
and requesting output of a response signal from the terminal while performing the communication mode, and checking electric field strength of the received signal when the response signal is received from the terminal. delete According to claim 8,
The vehicle further comprising a display unit displaying notification information regarding the absence of the terminal. The method of claim 8, wherein the wireless charging device,
A first driving unit for applying a current to the coil to form an electromagnetic field around the coil;
a second drive unit that emits an AC voltage corresponding to a control command as an electromagnetic wave through the coil and converts the received electromagnetic wave into an AC voltage when the electromagnetic wave is received through the coil;
A vehicle comprising a control unit that controls driving of the first driving unit when a charging mode using the coil is performed and controls driving of the second driving unit when performing a communication mode using the coil. a lock detection unit that detects locking and unlocking of the door;
a starting unit receiving start-on information and start-off information;
A coil for wirelessly charging a terminal and an electric field detector for detecting an electric field strength of a received signal received by the coil, and when the start-on information is received, a charging mode using the coil is performed, and the start-off information When is received, a communication mode using the coil is performed, and the electric field strength of the received signal detected when unlocking the door and the lock of the door based on the detection information detected by the lock detection unit during the execution of the communication mode a wireless charging device that acquires electric field strengths of the received signals detected at the time of day, and controls the output of notification information about the unknown location of the terminal when the obtained electric field strengths of the two received signals are the same; and
A vehicle comprising a sound output unit that outputs notification information about the terminal's absence as a sound. The method of claim 13, wherein the wireless charging device,
and requesting output of a response signal from the terminal while performing the communication mode, and checking electric field strength of the received signal when the response signal is received from the terminal. delete According to claim 13,
The vehicle further comprising a display unit displaying notification information regarding the absence of the terminal. In the control method of a vehicle equipped with a wireless charging device for wirelessly charging a terminal,
Controlling the charging mode of the wireless charging device when the start-on information of the vehicle is received;
Controlling the communication mode of the wireless charging device when it is determined that the vehicle is in a stopped state;
Checking the electric field strength of the received signal received through the coil provided in the wireless charging device,
Determine whether or not the user has exited;
If it is determined that the user got off, check the electric field strength of the received signal received through the coil of the wireless charging device when the user got off;
A vehicle control method for outputting notification information about the absence of the terminal when it is determined that the electric field strength of the received signals before and after the user gets off the vehicle is the same. The method of claim 17, wherein determining whether the user gets off,
Detecting an operating state of a door provided in the vehicle;
and determining that the user has exited the vehicle when the door is switched from an open state to a closed state. The method of claim 17, wherein determining whether the user gets off,
Detecting a locked state and an unlocked state of a door provided in the vehicle;
and determining that the user has exited the vehicle when the door is switched from an unlocked state to a locked state. The method of claim 17, wherein determining that the vehicle is in a stopped state comprises:
and determining that the vehicle is in a stopped state when the vehicle ignition off information is received. The method of claim 17, wherein determining that the vehicle is in a stopped state comprises:
Check the driving speed of the vehicle and the position of the shift lever;
and determining that the vehicle is in a stopped state when the traveling speed of the vehicle is zero and the position of the shift lever is in the parking range (P range). The method of claim 17, determining that the electric field strength of the received signal before and after the user gets off is the same,
Checking the difference in electric field strength before and after the user gets off;
and determining that electric field strengths of received signals before and after the user gets off the vehicle are the same when the difference in electric field strength is equal to or less than a reference value. 18. The method of claim 17, wherein outputting notification information about the non-possession of the terminal comprises:
and controlling an output of notification information about the absence of the terminal by controlling an operation of at least one of a sound output unit and a display unit provided inside the vehicle.

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