KR20160028912A - Wireless power charging apparatus of vehicles - Google Patents

Abstract

The present invention provides a wireless power charging apparatus for a vehicle comprising: a first transmission unit which transmits at least one of a first wireless power signal and a second wireless power signal based on magnetic induction (WPC, PMA); a second transmission unit which transmits a third wireless power signal based on magnetic resonance (A4WP); and a control unit which sequentially transmits the first to third wireless power signals to a charging terminal at set time intervals, determines whether a receiver of the charging terminal corresponds to the magnetic induction or the magnetic resonance, and controls any one of the first to third wireless power signals corresponding to the receiver to be transmitted.

Description

Description of the Related Art Wireless power charging apparatus of vehicles

The present invention relates to a wireless charging device for a vehicle, and more particularly, to a wireless charging device for a vehicle, and more particularly to a wireless charging device for a vehicle that determines the charging mode of a receiver included in a charging terminal to be charged, To a wireless charging device.

2. Description of the Related Art In general, a charging terminal carried by people, that is, a portable mobile terminal, is an electronic device driven by using a power source that is separately attachable, such as a self-coupled power source or a battery.

Such a portable mobile terminal is very convenient because it can be portable, but there is a problem that it is required to charge the power source from time to time. The user needs to charge the home electric power by supplying electric power using a wire cable such as a wire connector , There is a problem in that a cable cable is usually carried together.

In order to solve the above-mentioned problems, in recent years, portable mobile terminal products such as smart phones have gained a wide range of consumers and usage of terminals has been increased, so that the portable mobile terminals have been provided with a magnetic induction (WPC, PMA) Way transmitter (A4WP) is provided in the vehicle so that the user can wirelessly charge the portable mobile terminal.

2. Description of the Related Art [0002] Recently, there has been proposed a wireless communication system in which both a magnetic induction method (WPC, PMA) and an autonomous resonance method (A4WP) are applied to transmit a wireless power signal having a frequency corresponding to a charging method of a receiver included in a portable mobile terminal, We are studying a wireless charging device, and research is underway to develop a transmitter in which both magnetic induction method (WPC, PMA) are applied.

It is an object of the present invention to provide a wireless charging device for a vehicle which is easy to determine a charging mode of a receiver included in a charging terminal to be charged and transmit a wireless power signal corresponding to the charging mode of the receiver.

A wireless charging apparatus for a vehicle according to the present invention includes a first transmission unit for transmitting at least one of a first wireless power signal and a second wireless power signal according to a magnetic induction scheme (WPC, PMA) A second transmitter for transmitting a third wireless power signal; and a second transmitter for sequentially transmitting the first to third wireless power signals to the charging terminal at predetermined time intervals, so that the receiver of the charging terminal can perform either the self- And a control unit for determining whether one of the first to third wireless power signals corresponding to the receiver is transmitted.

Here, the first transmission unit may include: a WPC module that generates a first power signal in the magnetic induction manner; a PMA module that generates a second power signal; a second power signal generation unit that receives, from the WPC module and the PMA module, 2 power signal and transmits either one of the first and second wireless power signals, and a switching unit that performs switching operation under the control of the control unit, thereby switching between any one of the WPC module and the PMA module, And a first switch for connecting one coil.

The second transmitting unit may include an A4WP module that generates the third power signal in the self-resonant manner, a second coil that resonates with the third power signal transmitted from the A4WP module and transmits the third wireless power signal, And a second switch connected to the A4WP module and the second coil under the control of the control unit.

Here, the first to third wireless power signals may have different frequency bands.

The controller may transmit the first to third wireless power signals sequentially to the charging terminal at a predetermined time interval and may transmit the wireless power signal to the charging terminal in accordance with whether or not a response signal transmitted from the receiver of the charging terminal is received during the set time interval. It can be determined whether the charging method of the receiver corresponds to either the magnetic induction method or the self-resonance method.

The controller may control any one of the first and second transmitters to transmit the first to third wireless power signals to the receiver according to a charging method of the receiver.

The wireless charging apparatus for a vehicle according to the present invention can transmit a first wireless power signal and a second wireless power signal according to a magnetic induction scheme (WPC, PMA) to a charging terminal by using one coil, There is an advantage that it can be saved.

In addition, the wireless charging apparatus for a vehicle according to the present invention can transmit a wireless power signal corresponding to at least one of a magnetic induction system (WPC, PMA) and an autonomous resonance system (A4WP) The wireless charging can be carried out irrespective of the type of the user, thereby increasing the convenience of the user.

1 is a perspective view showing a wireless charging apparatus for a vehicle according to a first embodiment of the present invention.
2 is a control block diagram showing a control configuration for a wireless charging device of a vehicle according to the present invention.
3 is a flowchart illustrating an operation method for a wireless charging device of a vehicle according to the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a wireless charging apparatus for a vehicle according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view showing a wireless charging apparatus for a vehicle according to a first embodiment of the present invention.

Referring to FIG. 1, a wireless charging device for a vehicle includes a body portion 10 and a body portion 10 disposed inside a vehicle. The wireless charging device detects movement of a passenger (i.e., a human body) (Not shown) for receiving a battery power from a battery and transmitting a wireless power signal corresponding to one of a magnetic induction system (WPC, PMA) and an autonomous resonance system (A4WP) And a controller (not shown) for controlling the transmitter according to the charging method of the receiver included in the charging terminal 100 of the passenger arranged in the body 10.

The body part 10 is provided in the vehicle, and may be fixedly installed in any part of the vehicle, and may be detachably mounted.

The operation sensing unit 20, the transmission unit, and the control unit are provided in the body 10 so as to use the battery power according to the charging mode of the charging terminal 100 And transmit the wireless power signal to the receiver of the charging terminal 100. [

Here, the transmitter may be configured to generate wireless power signals of different frequencies corresponding to the magnetic induction system (WPC, PMA) and the self-resonance system (A4WP) capable of interacting with the receiver included in the charging terminal 100 And a detailed description thereof will be described later.

The motion sensing unit 20 senses the movement of the passenger in the vehicle to a portion adjacent to the body 10.

More specifically, the motion sensing unit 20 senses the movement of the passenger and senses a specific motion of approaching the body 10 so that the passenger can wirelessly charge the battery of his / And performs a function of primarily determining that the user is approaching the body part 10. [

The motion sensing unit 20 may be an IR sensor that senses a predetermined heat emitted from a human body. Originally, the IR sensor is a sensor for detecting infrared rays, and it senses infrared rays emitted from a human body inside the vehicle, thereby primarily sensing whether a passenger approaches the body 10.

On the upper surface of the body 10, a seat 30 on which the charging terminal 100 is seated is formed.

The seating part 30 may be provided with fixing means for fixing the portable terminal 100 firmly to facilitate wireless charging by the WPC method.

2 is a control block diagram showing a control configuration for a wireless charging device of a vehicle according to the present invention.

Referring to FIG. 2, a wireless charging device of a vehicle may include a transmitter 200 and a controller 300.

The transmitting unit 200 includes a first transmitting unit 210 for transmitting at least one of a first wireless power signal sp1 and a second wireless power signal sp2 according to a magnetic induction scheme (WPC, PMA) And a second transmitting unit 220 transmitting a third wireless power signal sp3 according to the A4WP.

In an embodiment, the first transmitter 210 generates any one of first and second radio power signals sp1 and sp2 having different frequencies in an inductively coupled system including a magnetic induction scheme (WPC, PMA) The transmitting unit 220 may generate a third wireless power signal sp3 corresponding to a specific frequency in a resonant coupling scheme including an autonomous resonance system (A4WP).

The first transmitter 210 includes a WPC module 212 for generating the first power signal s1 in the magnetic induction manner and a PMA module 214 for generating the second power signal s2, A first coil 216 which resonates with any one of the first and second power signals s1 and s2 and transmits any one of the first and second wireless power signals sp1 and sp2, And may include a first switch 218 for coupling the first coil 216 with either the WPC module 212 or the PMA module 214 in operation.

When the first coil 216 is electrically connected to the first coil 216 by the switching operation of the first switch 218, the WPC module 212 generates the first power signal s1 ), I.e., a first current having a first frequency.

That is, the WPC module 212 conducts inductive coupling with the first coil 216 to generate electromagnetic induction in the first coil 216 to generate a first wireless power signal (" 0.0 > sp1 < / RTI >

When the PMA module 214 is electrically connected to the first coil 216 by the switching operation of the first switch 218, the second power signal s2 generated using the battery power to the first coil 216 ), I.e., a second current having a second frequency.

That is, the PMA module 214 performs inductive coupling with the first coil 216 to cause the electromagnetic induction phenomenon to occur in the first coil 216, thereby causing the receiver included in the charging terminal 100 to generate the first wireless power signal sp2.

The first switch 218 connects the first coil 216 and the WPC module 212 when the first control signal sc1 is input from the controller 300 or the second switch 216 connects the first coil 216 and the WPC module 212 or receives the second control signal sc2 The first coil 216 and the PMA module 214 may be connected.

Here, the first switch 218 may be a relay or a field effect transistor, but is not limited thereto.

The second transmitting unit 220 resonates with the third power signal s3 transmitted from the A4WP module 222 to generate the third power signal s3 in the self-resonant manner, A second coil 226 for transmitting the signal sp3 and a second switch 228 for switching according to the control of the control unit 300 to connect the A4WP module 222 and the second coil 226 .

The A4WP module 212 generates the third power signal s3 generated using the battery power to the second coil 226 when electrically connected to the second coil 226 according to the switching operation of the second switch 228. [ ), I.e., a third current having a specific frequency.

That is, the A4WP module 222 resonates with the second coil 226 to cause electromagnetic resonance phenomenon in the second coil 226 to generate the third wireless power signal ( sp3 < / RTI >

The second switch 228 connects the second coil 226 and the A4WP module 222 when the third control signal sc2 is inputted from the control unit 300 and outputs the third power signal s3 May be supplied to the second coil 226.

The controller 300 detects a passenger from the motion sensing unit 20 that senses the operation of the passenger and when the charging terminal 100 is seated in the seat 30 included in the body 10, 2 switches 216 and 226 with the first to third control signals sc1 to sc3 at predetermined time intervals.

For example, the control unit 300 transmits the first control signal sc1 to the first switch 216, controls the first transmission unit 210 to transmit the first wireless power signal sp1, (Not shown) corresponding to the charging method of the receiver included in the receiver 100 is transmitted for the predetermined time.

Thereafter, when the response signal is not transmitted after the first wireless power signal sc1 is transmitted, the controller 300 transmits the second control signal sc2 to the first switch 218, 2 wireless power signal sp2 and confirms whether a response signal corresponding to the charging method of the receiver included in the charging terminal 100 has been transmitted for the predetermined time.

If the response signal is not transmitted after the second wireless power signal sc2 is transmitted, the control unit 300 transmits the third control signal sc3 to the second switch 228, 3 wireless power signal sp3 and confirms whether a response signal corresponding to the charging method of the receiver included in the charging terminal 100 has been transmitted for the predetermined time.

As described above, when the receiver included in the charging terminal 100 sequentially receives the first to third wireless power signals sp1 to sp3, the receiver receives a corresponding charging method, for example, a magnetic induction method (WPC, PMA) and the self-resonance method (A4WP), and transmits the frequency to the control unit 300 or the first and second transmission units 210 and 220. [

The controller 300 controls the first to third wireless power signals sp1 to sp3 for confirming the charging mode of the receiver included in the charging terminal 100 before the charging terminal 100 actually charges, And the charging terminal 100 can be charged with any one of the first to third wireless power signals sp1 to sp3.

The control unit 300 controls the switching operation of the first and second switches 218 and 228 so that the first to third wireless power signals sc1 to sp3 are sequentially transmitted to the charging terminal 100, The receiver included in the first wireless power signal verifies the change of the magnetic field or the electric field by any one of the first to third wireless power signals sp1 to sp3 so that any one of the first to third wireless power signals sp1 to sp3 To the charging terminal 100 so that the charging terminal 100 can be charged.

3 is a flowchart illustrating an operation method for a wireless charging device of a vehicle according to the present invention.

Referring to FIG. 3, the controller 300 included in the wireless charging device senses a passenger from the motion sensing unit 20 and determines whether the charging terminal 100 is seated in the seat 30 (S110).

The control unit 300 determines that the charging terminal 100 is placed in the seating unit 30 and confirms whether the charging method of the receiver included in the charging terminal 100 is the magnetic induction method (WPC) The first wireless power signal sp1 is transmitted to the charging terminal 100 through the wireless terminal 210 in step S120 and it is determined whether a response signal is transmitted from the charging terminal 100 for a predetermined time in step S130.

If it is determined in step S130 that the response signal has been transmitted, the controller 300 controls the first transmitter 210 to continuously transmit the first wireless power signal sp1 to the charging terminal 100 (S140).

If the controller 300 determines in step S130 that the response signal is not transmitted, the controller 300 determines whether the charging method of the receiver included in the charging terminal 100 is the self-induction method (PMA) (Step S150), and determines whether a response signal has been transmitted from the charging terminal 100 for a predetermined period of time (step S160).

If it is determined in step S160 that the response signal has been transmitted, the controller 300 controls the first transmitter 210 to continuously transmit the second wireless power signal sp2 to the charging terminal 100 (S170).

If the controller 300 determines in step S160 that the response signal is not transmitted, the controller 300 determines whether the charging method of the receiver included in the charging terminal 100 is the self-resonant method (A4WP) The wireless terminal 100 transmits the third wireless power signal sp3 to the charging terminal 100 in step S180 and determines whether a response signal is transmitted from the charging terminal 100 for a predetermined time in step S190.

If it is determined in step S190 that the response signal has been transmitted, the controller 300 controls the second transmitter 220 to continuously transmit the third wireless power signal sp3 to the charging terminal 100 (S200).

If it is determined in step S160 that the response signal is not transmitted, the control unit 300 determines that the first to third wireless power signals sp1 to sp3 are transmission errors, (sp1 to sp3). That is, the control unit 300 returns to step S120.

Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.

All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined.

It is to be understood that the terms "comprises", "comprising", or "having" as used in the foregoing description mean that the constituent element can be implanted unless specifically stated to the contrary, But should be construed as further including other elements.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It should be understood that various modifications may be made by those skilled in the art without departing from the spirit and scope of the present invention.

Claims (6)

A first transmitter for transmitting at least one of a first wireless power signal and a second wireless power signal according to a magnetic induction scheme (WPC, PMA);
A second transmitting unit for transmitting a third wireless power signal according to the self-resonant method (A4WP); And
The wireless terminal sequentially transmits the first to third wireless power signals to the charging terminal at predetermined time intervals to determine whether the receiver of the charging terminal corresponds to the magnetic induction system or the self resonance system, And a controller for controlling to transmit any one of the first to third wireless power signals. The method according to claim 1,
Wherein the first transmitter comprises:
A WPC, PMA module for generating a first power signal in the magnetic induction manner;
A first coil that resonates with any one of the first and second power signals transmitted from any one of the WPC module and the PMA module to transmit any one of the first and second wireless power signals; And
And a first switch for performing switching operation under the control of the control unit and connecting any one of the WPC module and the PMA module to the first coil. The method according to claim 1,
The second transmitting unit transmits,
An A4WP module that generates a third power signal in the self-resonant manner;
A second coil that resonates with the third power signal transmitted from the A4WP module and transmits the third wireless power signal; And
And a second switch for performing a switching operation under the control of the control unit and connecting the A4WP module and the second coil. The method according to claim 1,
Wherein the first to third wireless power signals comprise:
A wireless charging device for a vehicle having different frequency bands. The method according to claim 1,
Wherein,
Wherein the charging mode of the receiver is determined based on whether or not a response signal transmitted from the receiver of the charging terminal is received during the set time interval, and the first to third wireless power signals are sequentially transmitted to the charging terminal at predetermined time intervals, The magnetic induction system, and the self-resonance system. 6. The method of claim 5,
Wherein,
And controls one of the first and second transmitters according to a charging method of the receiver to transmit the first to third wireless power signals to the receiver.

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