KR20200083403A - Method for processing signal in hybrid wireless power transmission device which enables to transmit magnetic resonance wirelss power signal and induce wireless power signal, and hybrid wireless power transmission device using the same - Google Patents

Abstract

The present invention relates to a method for processing a signal in a hybrid wireless power transmission device capable of transmitting a magnetic resonance type wireless power signal and an induction type wireless power signal, and the hybrid wireless power transmission device using the same. The method comprises the steps of: alternately oscillating a first object detection signal through an induction power transmission unit and a second object detection signal through a magnetic resonance power transmission unit; selecting and operating one of the induction power transmission unit and the magnetic resonance power transmission unit based on an induction response signal and a resonance response signal corresponding to the first object detection signal and the second object detection signal; and transmitting a wireless power signal through the selected power transmission unit.

Description

METHOD FOR PROCESSING SIGNAL IN HYBRID WIRELESS POWER TRANSMISSION DEVICE WHICH ENABLES TO TRANSMIT MAGNETIC RESONANCE WIRELSS POWER SIGNAL AND INDUCE WIRELESS POWER SIGNAL, AND HYBRID WIRELESS POWER TRANSMISSION DEVICE USING THE SAME}

The present invention relates to a signal processing method in a hybrid wireless power transmission device capable of transmitting a magnetic resonance type wireless power signal and an induction type wireless power signal in a wireless power transmission system and a hybrid wireless power transmission device using the same.

With the development of wireless communication technology, it has become a ubiquitous information environment where anyone can send and receive all information anytime, anywhere. However, most of the communication information devices still depend on the battery, and the use of the communication information devices is limited by being supplied with power by a wired power cord.

Therefore, the wireless information network environment cannot be truly free without solving the problem of the terminal power supply.

In order to solve these problems, many methods for wirelessly transmitting power have been developed, such as a radio wave reception type method using microwaves, a magnetic induction method using a magnetic field, or a magnetic resonance method by switching energy between a magnetic field and an electric field. This is representative.

Here, the radio wave reception type method has an advantage in that power can be transmitted to a long distance by radiating radio waves through the antenna into the air, but the radiation loss consumed in the air is very large, thereby limiting the efficiency of power transmission.

In addition, the magnetic induction method is a technique using magnetic energy coupling by primary and secondary coils using a transmission coil as a transmitter and a secondary coil as a receiver, but has the advantage of having high power transmission efficiency, For this, the primary and secondary coils must be adjacent to a short distance of several millimeters, and the efficiency of power transmission rapidly changes according to the alignment of the primary and secondary coils.

Therefore, recently, a magnetic resonance method has been developed that transmits electric power in a form of magnetic energy by focusing energy at a specific resonance frequency by a coil-type inductor L and a capacitor C, similar to the magnetic induction method. Such a magnetic resonance method has an advantage of being able to transmit relatively large energy up to several meters, but requires a high quality factor. That is, the magnetic resonance method has a disadvantage in that its efficiency rapidly changes depending on whether impedance is matched or whether resonance frequencies are matched.

Accordingly, in the art, the magnetic induction method is advantageous when the distance between the transmitting and receiving coils is short, and when the distance between the transmitting and receiving coils is long, the advantage of the magnetic induction method and the advantage of the magnetic resonance method are utilized. This mixed wireless power transmission system has been proposed.

The present invention can determine whether the wireless power receiving device receiving the wireless power signal is an induction method or a magnetic resonance method, and transmit a wireless power signal accordingly, and can transmit a magnetic resonance method wireless power signal and an induction method wireless power signal. It is to provide a signal processing method in a hybrid wireless power transmission device and a hybrid wireless power transmission device using the same.

A signal processing method in a hybrid wireless power transmission apparatus capable of transmitting a magnetic resonance type wireless power signal and an inductive type wireless power signal, which is an embodiment of the present invention, devised to solve the above-described problem, is provided through an inductive power transmission unit. Alternately oscillating the first object detection signal and the second object detection signal through the magnetic resonance power transmission unit; Selecting and operating one of an inductive power transmission unit and a magnetic resonance power transmission unit based on the induction response signal and the resonance response signal corresponding to the first object detection signal and the second object detection signal; And transmitting a wireless power signal through the selected power transmitter. It may include.

According to an aspect of an embodiment of the present invention, the induction response signal may be an ASK signal from an induction power receiving device, and the resonance response signal may be an FSK signal from a resonance type wireless power receiving device.

According to an aspect of an embodiment of the present invention, based on the induction response signal and the resonance response signal corresponding to the first object detection signal and the second object detection signal, one of the induction power transmission unit and the magnetic resonance power transmission unit Selecting and operating may include selecting a power transmission unit corresponding to a response signal received in time first.

According to an aspect of an embodiment of the present invention, based on the induction response signal and the resonance response signal corresponding to the first object detection signal and the second object detection signal, one of the induction power transmission unit and the magnetic resonance power transmission unit The step of selecting and operating includes selecting and operating the magnetic resonance power transmitter based on the resonance response signal, and transmitting the wireless power signal through the selected power transmitter comprises: And receiving power state information from the wireless power receiving device through a short range communication module and controlling the wireless power signal based on the power state information.

According to an aspect of an embodiment of the present invention, based on the induction response signal and the resonance response signal corresponding to the first object detection signal and the second object detection signal, one of the induction power transmission unit and the magnetic resonance power transmission unit Selecting and operating includes selecting and operating the induction power transmitter based on the induction response signal, and transmitting a wireless power signal through the selected power transmitter comprises: a transmission coil of the induction power transmitter And receiving power state information from the wireless power receiving device and controlling the wireless power signal based on the power state information.

According to an aspect of an embodiment of the present invention, based on the induction response signal and the resonance response signal corresponding to the first object detection signal and the second object detection signal, one of the induction power transmission unit and the magnetic resonance power transmission unit Selecting and operating, when both the induction response signal and the resonance response signal are received, oscillating the inductive resonance detection signal through the inductive power transmission unit and the magnetic resonance detection signal through the magnetic resonance power transmission unit, the The inductive resonance detection signal is a frequency change step signal, and the magnetic resonance detection signal is a voltage change step signal; And if the resonance frequency of the induction frequency information corresponding to the induction resonance detection signal is higher than the reference frequency, and the resonance voltage of the resonance voltage information corresponding to the magnetic resonance detection signal is lower than the reference voltage, selecting the magnetic resonance power transmission unit. When the resonance frequency of the induction resonance detection signal is lower than a reference frequency and the resonance voltage of the magnetic resonance detection signal is higher than the reference voltage, the operation may include selecting and operating the induction power transmitter.

Here, the frequency change step signal is a frequency change signal from 110 to 205 KHz, and the voltage change step signal may be a voltage change step signal from 5 to 20V.

Another embodiment of the present invention, a hybrid wireless power transmission apparatus capable of transmitting a magnetic resonance method wireless power signal and an induction method wireless power signal includes: an induction power transmitter configured to transmit the induction method wireless power signal; A magnetic resonance power transmitter configured to transmit the magnetic resonance method wireless power signal; And alternately oscillating a first object detection signal through the inductive power transmission unit and a second object detection signal through the magnetic resonance power transmission unit, and an induction response signal corresponding to the first object detection signal and the second object detection signal. And a control unit that selects and operates one of the inductive power transmission unit and the magnetic resonance power transmission unit based on the resonance response signal, and controls to transmit a wireless power signal to the wireless power reception device through the selected power transmission unit. Can.

According to an aspect of another embodiment of the present invention, the response signal may be either an ASK signal from an inductive power receiving device or an FSK signal from a magnetic resonance wireless power receiving device.

According to an aspect of another embodiment of the present invention, the control unit may select a power transmission unit corresponding to a response signal received first in time.

According to an aspect of another embodiment of the present invention, the control unit selects and operates the magnetic resonance power transmission unit based on the resonance response signal, and the wireless power reception device receives the wireless power reception device through a short-range communication module of the magnetic resonance power transmission unit. Power state information may be received, and the wireless power signal may be controlled based on the power state information.

According to an aspect of another embodiment of the present invention, the control unit selects and operates the induction power transmission unit based on the induction response signal, and power state information from the wireless power receiving device through the transmission coil of the induction power transmission unit And a wireless power signal based on the power state information.

According to an aspect of another embodiment of the present invention, the control unit, when both the induction response signal and the resonance response signal is received, the magnetic resonance detection signal through the inductive power transmission unit and the magnetic resonance through the magnetic resonance power transmission unit Oscillating the detection signal, the induction resonance detection signal is a frequency change step signal, the magnetic resonance detection signal is a voltage change step signal, the control unit, the resonance frequency of the induction resonance detection signal is higher than the reference frequency, the When the resonance voltage of the magnetic resonance detection signal is lower than the reference voltage, the magnetic resonance power transmission unit is selected and operated, and the resonance frequency of the induced resonance detection signal is lower than the reference frequency, and the resonance voltage of the magnetic resonance detection signal is the reference voltage If it is higher, the induction power transmitter can be selected and operated.

According to an aspect of another embodiment of the present invention, the frequency change step signal is a frequency change signal at 6.78 MHz± 5%, and the voltage change step signal is a voltage change step at 5 to 20 V at 6.78 MHz± 5%. It can be a signal.

According to an aspect of another embodiment of the present invention, the inductive power transmission unit includes a transmission coil, the magnetic resonance power transmission unit includes a loop antenna located outside the transmission coil, and the first object detection signal is Oscillating through the transmission coil, the resonance power object detection signal may be oscillated through the loop antenna.

According to an embodiment of the present invention having the above-described configuration, by confirming the type of the wireless power receiving device through the antenna and the transmission coil, and accordingly, by transmitting the wireless power signal in an appropriate manner, the induction type wireless power receiving device and Charging for the wireless power receiving device of the resonance method may be made.

In addition, when the wireless power receiving device is a hybrid method, it is possible to transmit a wireless power signal of a more excellent transmission efficiency.

In addition, since the type of the wireless power receiving device can be checked without a separate communication unit or a sensing sensor, the number of parts can be reduced, and the manufacturing cost can be reduced.

1 is a block diagram of a wireless power transmission system including a hybrid wireless power transmission device that is a temporary example of the present invention.
Figure 2 is a block diagram for explaining the induction power transmission unit of the temporary wireless hybrid power transmission apparatus of the present invention.
Figure 3 is a block diagram for explaining a magnetic resonance power transmission unit of the temporary wireless hybrid power transmission device of the present invention.
4 is a flowchart for explaining a signal processing method in a hybrid wireless power transmission apparatus capable of transmitting a magnetic resonance type wireless power signal and an induction type wireless power signal, which are temporary examples of the present invention.
5 illustrates a signal processing method in the case where the induction response signal and the resonance response signal are simultaneously received in the hybrid wireless power transmission apparatus capable of transmitting the magnetic resonance method wireless power signal and the induction method wireless power signal, which are temporary examples of the present invention. Flow chart for doing.
FIG. 6 is a diagram showing an example of a magnetic resonance detection signal oscillated in a signal processing method in a hybrid wireless power transmission apparatus capable of transmitting a magnetic resonance type wireless power signal and an induction type wireless power signal according to an embodiment of the present invention.
7 is a diagram illustrating an example of an inductive resonance detection signal oscillated in a signal processing method in a hybrid wireless power transmission apparatus capable of transmitting a magnetic resonance type wireless power signal and an inductive type wireless power signal, which is an embodiment of the present invention.

Hereinafter, a signal processing method in a hybrid wireless power transmission apparatus capable of transmitting a magnetic resonance type wireless power signal and an induction type wireless power signal and a hybrid wireless power transmission device using the same will be described in detail with reference to the drawings.

1 is a block diagram of a wireless power transmission system including a hybrid wireless power transmission device as a temporary example of the present invention.

As illustrated, the wireless power system according to the present invention may be composed of a wireless power transmission device 100 and a wireless power reception device 200.

The hybrid wireless power transmission apparatus 100 according to the present invention includes an induction power transmission unit 20, a magnetic resonance power transmission unit 30, and a control unit 10, and the wireless power reception device 200 The furnace may be an induction power receiving device 210, a magnetic resonance receiving device 220, and a hybrid receiving device 230.

In more detail, the first object detection signal through the inductive power transmission unit 20 and the second object detection signal through the magnetic resonance power transmission unit 30 are alternately oscillated, and the first object detection signal And selecting and operating one of the inductive power transmission unit 20 and the magnetic resonance power transmission unit 30 based on the induction response signal and the resonance response signal corresponding to the second object detection signal. By transmitting the wireless power signal to the wireless power receiving device side through the unit, whether the wireless power receiving device receiving the wireless power signal can receive a high-frequency magnetic resonance type wireless power signal or a low-frequency induction type wireless power signal. After confirming whether it can be received, by transmitting the wireless power signal in a confirmed manner, it is possible to charge whether the reception method of the wireless power receiving apparatus 200 is an induction method or a magnetic resonance method.

Here, the first object detection signal may be a pulse signal oscillated by the transmission coil 21 of the induction power transmission unit 20. The second object detection signal may be a pulse signal oscillated by the antenna 31 of the magnetic resonance power transmission unit 30. That is, the first object detection signal may be a signal for detecting an external object using inductive power, and the second object detection signal may be a signal for detecting an external object using resonance power.

2 and 3, the induction power transmission unit 20 and the magnetic resonance power transmission unit 30 will be described in more detail.

2 is a block diagram for explaining the induction power transmission unit 20 of the hybrid wireless power transmission device 100 that is a temporary example of the present invention. As illustrated, the induction power transmission unit 20 may include a transmission coil 21, an object detection unit 22, a converter 23, a driving driver 24, and an induction power control unit 25. have.

The transmission coil 21 is a component that oscillates the wireless power signal of the induction method, and oscillates the wireless power signal to the induction power receiving device 210 by the electromagnetic induction method. At this time, the oscillating induction wireless power signal has a frequency of 100 ~ 205KHz. The shape of the transmission coil 21 may be circular, elliptical, track-shaped, square, polygonal, or the like. In addition, according to an embodiment of the present invention, the first object detection signal is oscillated through the transmission coil 21 under the control of the induction power control unit 25. That is, the converter 23 and the driving driver 24 are controlled, so that a first object detection signal is oscillated through the transmission coil 21, and the induction power receiving device 210 is placed in a charging position, so that an induction response signal is generated. When received through the transmission coil 21, the object detector 22 senses this induction response signal, and accordingly, the induction wireless power signal is oscillated through the transmission coil 21.

The converter 23 generates transmission power for generating a power signal to be transmitted by the control of the driving driver 24 and supplies it to the transmission coil 21 as well as transmission for generating the first object detection signal. It is to supply power to the transmission coil 21. In other words, the induction power control unit 25, when the induction power receiving device 210 is placed at the charging position and the induction response signal is sensed, that is, the power that causes the converter 23 to transmit the power signal having the required power value The control signal is transmitted to the driving driver 24, and accordingly, the driving driver 24 controls the operation of the converter 23 by the transmitted power control signal. Accordingly, the converter is required by applying the transmission power corresponding to the power value (ie, voltage change, frequency change or voltage and frequency change) required by the control of the driving driver to the corresponding transmission coil 21. The wireless power signal of the intensity is to be transmitted to the induction power receiving device 210 in the charging position.

The driving driver 24 controls the operation of the converter 23 through control of the induction power control unit 25.

The object detection unit 22 processes the induction response signal from the induction power reception device 210 according to the first object detection signal output from the transmission coil 21 to induce the induction power reception device 210 at a charging position. ) Is detected, and accordingly, the induction power control unit 25 controls the driving driver 24 to control the digital ping signal (refer to FIG. 7: frequency change step signal; induction resonance detection signal) to transmit coil 21 It is oscillated through, and has a function as an ID verification unit by receiving a signal strength packet signal from the induction power receiving device 210 as a response signal. Also, the charging state information transmitted from the wireless power receiving device (ASK communication signal ) To filter and process. That is, when a signal including the induction ID signal and the charging state information, which is a signal strength packet signal for the induction resonance detection signal transmitted through the transmission coil 21, is filtered and processed.

The induction power control unit 25 receives and confirms the determination result of the object detection unit 22, analyzes the object response signal received from the transmission coil 21, and wireless power signal through the transmission coil 21 It serves to transmit the power signal for transmitting the to the driving driver 24.

Hereinafter, a configuration of the magnetic resonance power transmission unit 30 of the hybrid wireless power transmission device 100 according to an embodiment of the present invention will be described in more detail with reference to FIG. 3.

FIG. 3 is a block diagram for explaining the magnetic resonance power transmitter 30 of the hybrid wireless power transmitter 100 as a temporary example of the present invention. 3, the magnetic resonance power transmission unit 30 is composed of an antenna 31, an object detection unit 32, a high frequency driver 33, a short-range communication module 34, and a magnetic resonance control unit 35 Can be.

The antenna 31 is a component for transmitting a high-frequency wireless power signal of 6.78MHz±5%. The loop antenna 31 may be used as the antenna 31, and the loop antenna 31 may be installed outside the transmission coil 21 of the inductive power transmission unit 20 described above. According to an embodiment of the present invention, a second object detection signal is oscillated through the antenna 31 under the control of the magnetic resonance controller 35. That is, when the second object detection signal is oscillated through the antenna 31 and the magnetic resonance receiving device 220 is placed within the charging distance, when the resonance response signal (FSK signal) is received through the antenna 31, the object The sensing unit 32 detects this resonance response signal, and accordingly, the control unit 10 selects the magnetic resonance power transmission unit 30, and the magnetic resonance control unit 35 has a magnetic wireless power signal. 31).

The object detector 32 processes the resonance response signal from the magnetic resonance receiver 220 according to the second object detection signal output from the antenna 31, so that the magnetic resonance receiver 220 at a charging distance The magnetic resonance control unit 35 controls the high frequency driver 33 to generate a digital ping signal (refer to FIG. 6: a voltage change step signal; a magnetic resonance detection signal), and oscillates through the antenna 31 accordingly. It has a function as an ID verification unit by receiving a signal strength packet signal (magnetic ID signal) from the magnetic resonance receiving apparatus 220 as a response signal to this.

Meanwhile, the short-range communication module 34 is a component for receiving charging state information from the magnetic resonance receiver 220 while the magnetic resonance wireless power signal oscillates through the antenna 31. The magnetic resonance controller 35 may control the high frequency driver 33 according to the charging state information received through the short-range communication module 34 to change the oscillation voltage to obtain optimal wireless charging efficiency.

The magnetic resonance control unit 35 receives and confirms the determination result of the object detection unit, analyzes an FSK signal received through the antenna 31, and transmits a magnetic resonance type wireless power signal through the antenna 31 By transmitting the power signal for the high-frequency driver 33, the high-frequency magnetic resonance wireless power signal serves to oscillate through the antenna 31. In addition, during wireless charging, it is possible to obtain optimal wireless charging efficiency by adjusting the output voltage based on the charging state information received through the short-range communication module 34.

Hereinafter, a signal processing method for confirming the type of the wireless power receiving apparatus 200 in the hybrid wireless power transmitting apparatus 100 having the above-described configuration will be described with reference to FIGS. 4 and 5.

4 is a flowchart for explaining a signal processing method in a hybrid wireless power transmission apparatus capable of transmitting a magnetic resonance type wireless power signal and an induction type wireless power signal, which are temporary examples of the present invention.

First, the control unit 10 controls the induction power transmission unit 20 and the magnetic resonance control unit 35, the first object detection signal is oscillated through the induction power transmission unit 20, the magnetic resonance power transmission The second object detection signal is controlled to oscillate through the unit 30. At this time, the first object detection signal and the second object detection signal alternately oscillate (S1).

Then, the control unit 10 checks whether the induction response signal has been received from the induction power transmission unit 20 (S2). At this time, if the induction response signal is not received, it is checked whether a resonance response signal is received (S3). The induction response signal may be an ASK signal from the induction power receiving apparatus 210, and the resonance response signal may be an FSK signal from the resonance method wireless power receiving apparatus 220. On the other hand, it should be understood that the order of the steps S2 and S3 may be changed.

If an induction response signal is received, the control unit 10 selects and operates the induction power transmission unit 20 (S21), and then oscillates the induction method wireless power signal through the transmission coil 21 (S23). ). Accordingly, the wireless reception device 210 (induction power reception device) is charged by the induction method wireless power signal, receives the state information from the induction power reception device 210 through the transmission coil 21 and thereby Accordingly, wireless power control is performed to achieve optimal wireless charging (S25).

If the induction response signal is not received and the resonance response signal is received, the control unit 10 selects and operates the magnetic resonance power transmission unit 30 (S31), and then transmits the magnetic resonance method wireless power signal to the antenna. It is oscillated through (31) (S33). Accordingly, the wireless reception device 220 (magnetic resonance reception device) is charged by the magnetic resonance method wireless power signal, and receives the status information from the magnetic resonance reception device 220 through the short-range communication module 34 And accordingly, the wireless power control is performed to achieve optimal wireless charging (S35).

Hereinafter, a signal processing method in the case where the wireless power receiving device is a hybrid wireless power receiving device 230 capable of receiving both a magnetic resonance type wireless power signal and an induction type wireless power signal will be described with reference to FIG. 5. .

5 is a case where the induction response signal and the resonance response signal are simultaneously received in the hybrid wireless power transmission apparatus 100 capable of transmitting the magnetic resonance method wireless power signal and the induction method wireless power signal, which are temporary examples of the present invention (ie, It is a flow chart for explaining a signal processing method of the wireless power receiving device 200 (if the hybrid receiving device 230).

First, as in FIG. 4, the control unit 10 controls the induction power transmission unit 20 and the magnetic resonance transmission unit 35, so that the first object detection signal oscillates through the induction power transmission unit 20. The second object detection signal is controlled to oscillate through the magnetic resonance power transmission unit 30. At this time, the first object detection signal and the second object detection signal are alternately oscillated (S51). At this time, when the wireless power receiving device 200 in the charging position is the hybrid receiving device 230, both the induction response signal and the resonance response signal are received (S53). Then, the control unit controls both the inductive power transmission unit 20 and the magnetic resonance power transmission unit 30 to oscillate the induction resonance detection signal and the magnetic resonance detection signal to the wireless power receiver (S55). At this time, the resonance frequency of the induction frequency information (transmitted from the inductive power receiving device) corresponding to the induction resonance detection signal is outside a predetermined range from a reference frequency, and the resonance voltage information (resonance power) corresponding to the magnetic resonance detection signal If the resonance voltage of (transmitted from the receiving device) is lower than the reference voltage, the magnetic resonance power transmission unit 30 is selected and operated, and the resonance frequency among the induced resonance detection signals is within a predetermined range from the reference frequency, and the magnetic When the resonance voltage of the resonance detection signal is higher than the reference voltage, the induction power transmission unit 20 is selected and operated (S57, S59, S61). That is, when the resonance frequency is within a predetermined range from the reference frequency, and the resonance voltage is higher than the reference voltage, the induction method becomes a more efficient method than the magnetic resonance method. Because, the resonance frequency is within a predetermined range from the reference frequency means that the wireless power receiving device 200 is located very close to the optimal charging position among the charging positions, and the resonance voltage of the magnetic resonance detection signal is the reference voltage Higher means that the wireless power receiving device 200 is located at a charging distance at a predetermined distance from the optimal charging distance among the charging distances. Therefore, if the resonance frequency is within a predetermined range from the reference frequency, and the resonance voltage is higher than the reference voltage, the induction method becomes an advantageous method, and the induced resonance frequency is outside the predetermined range from the reference frequency, and the resonance voltage is the reference voltage. If it is lower, the resonance method is an advantageous method.

FIG. 6 is a diagram illustrating an example of a magnetic resonance detection signal oscillated in a signal processing method in a hybrid wireless power transmission apparatus capable of transmitting a magnetic resonance type wireless power signal and an induction type wireless power signal according to an embodiment of the present invention.

As shown in Fig. 6, the magnetic resonance detection signal is a voltage change step signal at a specific frequency (magnetic resonance frequency). That is, it is a voltage change step signal that gradually progresses over 5 to 20 V in a resonance frequency band of 6.78 MHz ± 5%. When the magnetic resonance power transmission unit 30 receives a resonance response signal corresponding to the second object detection signal from the wireless power reception device, that is, the magnetic resonance reception device 220, a voltage that is a digital ping signal as in FIG. 6. The step change signal is oscillated through the antenna 31. Accordingly, the magnetic resonance receiver 220 oscillates the FSK communication signal (corresponding to the resonance voltage information) with respect to the signal corresponding to the optimal voltage (one of P1 to P5), and accordingly, the optimal voltage is selected.

At this time, when the FSK signal is received at P1, it means that the charging distance is optimal, and when the FSK signal is received at P5, the charging distance is the closest or closest, that is, charging is possible, but the efficiency is worst. I would say.

7 is a diagram illustrating an example of an inductive resonance detection signal oscillated in a signal processing method in a hybrid wireless power transmission apparatus capable of transmitting a magnetic resonance type wireless power signal and an inductive type wireless power signal according to an embodiment of the present invention.

As shown in Fig. 7, the induction resonance detection signal is a frequency change step signal. That is, it is a frequency change step signal that progresses at a predetermined frequency interval in a frequency band of 110 to 205 KHz. In the inductive power transmission unit 20, when the inductive response signal corresponding to the first object detection signal is received from the wireless power receiving device, that is, the inductive power receiving device 210, a frequency step that is a digital ping signal as in FIG. The change signal is oscillated through the transmission coil 21. Accordingly, the induction power receiving device 210 oscillates the ASK communication signal (corresponding to induction frequency information) with respect to the signal corresponding to the optimal frequency (one of P'1 to P'5), and accordingly, the optimal frequency Will be selected.

At this time, when the ASK signal is received at P'3, which is 175KHz, which is the optimum frequency, it means that the charging position is optimal. When the ASK signal is received at P'1 or P'5, the most efficient of the charging positions is It would be the worst case.

According to an embodiment of the present invention having the above-described configuration, by confirming the type of the wireless power receiving device through the antenna and the transmission coil, and accordingly, by transmitting the wireless power signal in an appropriate manner, the induction type wireless power receiving device and Charging for the wireless power receiving device of the resonance method may be made.

In addition, when the wireless power receiving device is a hybrid method, it is possible to transmit a wireless power signal of a more excellent transmission efficiency.

In addition, since the type of the wireless power receiving device can be checked without a separate communication unit or a sensing sensor, the number of parts can be reduced, and the manufacturing cost can be reduced.

The signal processing method in the hybrid wireless power transmission apparatus capable of transmitting the magnetic resonance type wireless power signal and the induced wireless power signal described above and the hybrid wireless power transmission device using the same have the configuration and method of the above-described embodiments Not limitedly applicable, the above embodiments may be configured by selectively combining all or part of each embodiment so that various modifications can be made.

100: hybrid wireless power transmission device
10: control unit
20: induction power transmission unit
21: transmission coil
22: object detection unit
23: converter
24: driving driver
25: induction power control
30: magnetic resonance transmitter
31: antenna
32: object detection unit
33: high frequency driver
34: resonance control
200: wireless power receiving device
210: induction power receiving device
220: magnetic resonance receiving device
230: hybrid receiving device

Claims (15)

Alternately oscillating the first object detection signal and the second object detection signal using different types of power transmission units;
Selecting and operating one of the different types of power transmission units based on the first object detection signal or a response signal corresponding to the second object detection signal; And
Transmitting a wireless power signal through the selected power transmitter; A signal processing method in a hybrid wireless power transmission apparatus that can transmit a wireless power signal using a plurality of transmission methods.
According to claim 1,
The response signal includes a guided response signal and a resonance response signal, a signal processing method in a hybrid wireless power transmission apparatus capable of transmitting a wireless power signal using a plurality of transmission methods.
According to claim 2,
The induction response signal is an ASK signal from an induction power receiving device, and the resonance response signal is an FSK signal from a resonance type wireless power receiving device, a hybrid wireless power transmission capable of transmitting a wireless power signal using a plurality of transmission methods Method of signal processing in the device.
According to claim 1,
Selecting and operating one of the different types of power transmission units based on the first object detection signal or a response signal corresponding to the second object detection signal,
A signal processing method in a hybrid wireless power transmission apparatus capable of transmitting a wireless power signal using a plurality of transmission schemes, comprising selecting a power transmission unit corresponding to a response signal received in time first.
According to claim 1,
The different types of power transmission unit includes a magnetic resonance power transmission unit,
Selecting and operating one of the different types of power transmission units based on the first object detection signal or a response signal corresponding to the second object detection signal,
And selecting and operating the magnetic resonance power transmission unit based on the resonance response signal,
The step of transmitting the wireless power signal through the selected power transmission unit,
And receiving power state information from a wireless power receiving device through a short-range communication module of the magnetic resonance power transmission unit and controlling the wireless power signal based on the power state information. A signal processing method in a hybrid wireless power transmission device capable of transmitting a wireless power signal.
According to claim 1,
The different types of power transmission units include induction power transmission units,
Selecting and operating one of the different types of power transmission units based on the first object detection signal or a response signal corresponding to the second object detection signal,
And selecting and operating the induction power transmitter based on an induction response signal,
The step of transmitting the wireless power signal through the selected power transmission unit,
And receiving power state information from a wireless power receiving device through a transmission coil of the induction power transmitting unit and controlling the wireless power signal based on the power state information, wireless power using a plurality of transmission schemes. A signal processing method in a hybrid wireless power transmission device capable of transmitting signals.
According to claim 1,
The different types of power transmission units include an induction power transmission unit and a magnetic resonance power transmission unit,
Selecting and operating one of the different types of power transmission units based on the first object detection signal or a response signal corresponding to the second object detection signal,
When both the induction response signal and the resonance response signal are received, oscillating the induction resonance detection signal through the inductive power transmission unit and the magnetic resonance detection signal through the magnetic resonance power transmission unit, wherein the induction resonance detection signal is a frequency change step signal And the magnetic resonance detection signal is a voltage change step signal; And
If the resonance frequency of the induction frequency information corresponding to the induction resonance detection signal is outside a predetermined range from a reference frequency, and the resonance voltage of the resonance voltage information corresponding to the magnetic resonance detection signal is lower than the reference voltage, the magnetic resonance power transmission unit Selecting and operating, if the resonance frequency of the induction resonance detection signal is within a predetermined range from a reference frequency, and the resonance voltage of the magnetic resonance detection signal is higher than the reference voltage, selecting and operating the induction power transmission unit, A signal processing method in a hybrid wireless power transmission apparatus capable of transmitting a wireless power signal using a plurality of transmission methods.
The method of claim 7,
The frequency change step signal is a frequency change signal from 110 to 205 KHz, and the voltage change step signal is a voltage change step signal from 5 to 20 V at 6.78 MHz±5%, and uses a plurality of transmission methods to wireless power. A signal processing method in a hybrid wireless power transmission device capable of transmitting signals.
A hybrid wireless power transmission device capable of transmitting a wireless power signal using a plurality of transmission methods,
Different types of power transmission units are used to alternately oscillate the first object detection signal and the second object detection signal, and based on the first object detection signal or the response signal corresponding to the second object detection signal, the different types of the A hybrid capable of transmitting a wireless power signal using a plurality of transmission methods, including a control unit that selects and operates one of the power transmission units and controls to transmit a wireless power signal to the wireless power reception device through the selected power transmission unit. Wireless power transmission device.
The method of claim 9,
The response signal is a hybrid wireless power transmission device capable of transmitting a wireless power signal using a plurality of transmission methods, which is one of an induction response signal from an induction power reception device or a resonance response signal from a magnetic resonance type wireless power reception device.
The method of claim 9,
The control unit is a hybrid wireless power transmission device capable of transmitting a wireless power signal using a plurality of transmission methods, selecting a power transmission unit corresponding to the response signal received in time first.
The method of claim 9,
The hybrid wireless power transmission apparatus includes a magnetic resonance power transmitter configured to transmit a magnetic resonance method wireless power signal,
The control unit,
Select and operate the magnetic resonance power transmission unit based on a resonance response signal, receive power status information from the wireless power receiving device through the short-range communication module of the magnetic resonance power transmission unit, and perform the wireless based on the power status information. A hybrid wireless power transmission device capable of transmitting a wireless power signal using a plurality of transmission methods that control the power signal.
The method of claim 9,
The hybrid wireless power transmission apparatus includes an induction power transmission unit configured to transmit a magnetic induction type wireless power signal,
The control unit,
Selecting and operating the induction power transmitter based on an induction response signal, receiving power state information from a wireless power receiving device through a transmission coil of the induction power transmitter, and receiving the wireless power signal based on the power state information. A hybrid wireless power transmission device capable of transmitting a wireless power signal using a plurality of transmission methods that are controlled.
The method of claim 9,
The hybrid wireless power transmission device,
An induction power transmitter configured to transmit a magnetic induction type wireless power signal; And
A magnetic resonance power transmitter configured to transmit a magnetic resonance type wireless power signal; Further comprising,
The control unit,
When both the induction response signal and the resonance response signal are received, the inductive resonance detection signal through the inductive power transmission unit and the magnetic resonance detection signal through the magnetic resonance power transmission unit are oscillated,
The induction resonance detection signal is a frequency change step signal, the magnetic resonance detection signal is a voltage change step signal,
In addition, the control unit,
If the resonance frequency of the induction frequency information corresponding to the induction resonance detection signal is outside a predetermined range from a reference frequency, and the resonance voltage of the resonance voltage information corresponding to the magnetic resonance detection signal is lower than the reference voltage, the magnetic resonance power transmission unit A plurality of transmission schemes for selecting and operating, and when the resonance frequency of the induction resonance detection signal is within a predetermined range from a reference frequency and the resonance voltage of the magnetic resonance detection signal is higher than the reference voltage, the induction power transmitter is selected and operated. Hybrid wireless power transmission device that can transmit a wireless power signal using.
The method of claim 9,
The hybrid wireless power transmission device,
An induction power transmitter configured to transmit a magnetic induction type wireless power signal; And
A magnetic resonance power transmitter configured to transmit a magnetic resonance type wireless power signal; Further comprising,
The induction power transmission unit includes a transmission coil, and the magnetic resonance power transmission unit includes a loop antenna located outside the transmission coil,
The first object detection signal is oscillated through the transmission coil, the resonance power object detection signal is oscillated through the loop antenna, a hybrid wireless power transmission apparatus capable of transmitting a wireless power signal using a plurality of transmission methods.

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