WO2018012726A1 - Wireless charging power reception apparatus supporting multiple wireless charging schemes - Google Patents

Abstract

Upon receiving charging power for communication from a wireless charging power transmission apparatus, a wireless charging power reception apparatus supporting multiple wireless charging schemes according to the present invention converts an input alternating current (AC) voltage due to the charging power for communication into a pulse width modulation (PWM) signal, generates a clock signal having a predetermined period to measure the number of clocks which can be included within a high pulse signal of the PWM signal, and then converts the number of the clocks into bit data to identify a first wireless charging scheme corresponding to the converted bit data by making reference to a bit table in which different ranges of bit data are recorded according to multiple wireless charging schemes. Therefore, the wireless charging power reception apparatus can accurately determine a wireless charging scheme of the wireless charging power transmission apparatus.

Description

Wireless charging power receiver supporting multiple wireless charging schemes

Embodiments of the present invention relate to techniques for a wireless charging power receiver for receiving charging power from a wireless charging power transmitter.

Recently, as the spread of various portable devices such as smart phones and tablet PCs increases, efforts to increase the use time of such portable devices have been continued.

As part of such efforts, devices that manufacture batteries installed in portable devices, rather than built-in types, may be released to facilitate replacement of batteries, and devices equipped with high-capacity batteries are also released.

However, since these portable devices eventually adopt a battery, a study on a technique for supporting charging of the battery mounted in the portable device more easily and efficiently is required.

Currently, most of the general portable devices on the market are connected by a predetermined charging cable to the portable device to charge the battery mounted in the portable device by wire.

However, in recent years, since the wired charging method impairs the convenience of the user, a wireless charging technology for charging a portable device battery in a wireless manner has been introduced.

Such wireless charging techniques include a wireless charging technique according to electromagnetic induction and a wireless charging technique according to magnetic resonance. Both the wireless charging technique based on electromagnetic induction and the wireless charging technique based on magnetic resonance use non-radial attenuated alternating current signals around the coil in the near field. That is, a method of charging a battery without a contact terminal by using an inductive coupling between a primary coil of a wireless charging power transmitter and a secondary coil of a wireless charging power receiver is introduced.

Usually, when the wireless charging power receiver receives the charging power having the AC signal from the wireless charging power transmitter, the AC voltage applied to the charging power receiver is rectified to the DC voltage through the rectifying unit, and the DC power is applied to the battery using the DC voltage. The battery is configured to charge the battery by generating a constant voltage and a constant current to be supplied and then supplying the same to the battery.

The wireless charging power receiver performs a pre-operation to be connected to the wireless charging power transmitter in order to normally receive the charging power from the wireless charging power transmitter to charge the battery.

In more detail, the wireless charging power transmitter transmits communication charging power to the wireless charging power receiver to be connected with the wireless charging power receiver before the charging power is transmitted to the wireless charging power receiver in earnest. do.

In this case, when the wireless charging power receiver receives the communication charging power, the wireless charging power receiver transmits a response signal indicating whether the communication charging power is normally received to the wireless charging power transmitter, and the wireless charging power transmitter transmits the response signal. When normally fed back, the wireless charging power receiver starts to transmit charging power in earnest.

The most well known wireless charging methods to date include wireless charging using WPC (Wireless Power Consortium), wireless charging using PMA (Power Matters Alliance), and wireless charging using A4WP (Alliance for Wireless Power).

WPC and PMA methods are self-induction wireless charging methods. WPC is configured to transmit wireless charging power signals in the 110-205 kHz band, and PMA is configured to transmit wireless charging power signals in the 110-357 kHz band. .

The A4WP scheme is a magnetic resonance wireless charging scheme, and is configured to transmit a wireless charging power signal in a 6.78 MHz band.

In the WPC method and the PMA method, in order for the wireless charging power transmitter to be connected to the wireless charging power receiver, the communication charging power is transferred to the wireless charging power receiver in the 110-205 kHz or 110-357 kHz band defined to transmit the wireless charging power signal. When transmitting, the communication protocol is configured such that the wireless charging power receiver transmits a response signal to the wireless charging power transmitter through in-band communication in the same frequency band as the corresponding frequency band in which the communication charging power is transmitted. It is prescribed.

On the other hand, in the A4WP scheme, when the wireless charging power transmitter is connected to the wireless charging power receiver, when the wireless charging power receiver transmits the communication charging power in the 6.78 MHz band defined to transmit the wireless charging power signal, the wireless charging power receiver is wirelessly charged. An out-of-band communication protocol is specified that allows the power receiver to transmit a response signal to the wireless charging power transmitter through Bluetooth communication in the 2.4 GHz band instead of the 6.78 MHz band. have.

As such, as there are various wireless charging methods, devices compatible with the wireless charging method have been separated from each other. As a result, devices that do not support certain wireless charging methods have difficulty using wireless charging.

In order to overcome this disadvantage, recently, the introduction of a wireless charging power receiving device that can be compatible with all the various wireless charging schemes have been discussed.

The wireless charging power receiver includes an integrated antenna for receiving wireless charging power signals of all WPC, PMA, and A4WP methods, rectifies the wireless charging power received by each method, and supplies constant voltage and constant current to the battery. It is equipped with an integrated wireless charging signal processing chip to supply.

However, in order for all wireless charging methods to be accurately compatible, when the wireless charging power receiver receives the communication charging power for the first connection from the wireless charging power transmitter, the wireless charging power receiver analyzes the corresponding charging power for the communication. After accurately determining whether or not the wireless charging method, it is necessary to be configured to transmit a response signal to the wireless charging power transmission apparatus based on the determined communication protocol according to the wireless charging method. This is because if the wireless charging method is correctly determined based on the communication charging power first received from the wireless charging power transmitter, the wireless charging power transmitter may be connected to the wireless charging power transmitter to receive the wireless charging power according to the determined wireless charging method. .

Therefore, in order to make the plurality of wireless charging schemes compatible with one wireless charging power receiver, the wireless charging scheme of the wireless charging power transmitter is accurately determined based on the communication charging power transmitted from the wireless charging power transmitter. Research of techniques to distinguish is necessary.

When the communication charging power is received from the wireless charging power transmitter, the present invention converts the input AC voltage by the communication charging power into a pulse width modulation (PWM) signal and generates a clock signal having a predetermined period. After measuring the number of clocks that can be included in the high pulse signal of the PWM signal, the number of clocks is converted into bit data to refer to a bit table in which a range of different bit data is recorded for each of a plurality of wireless charging schemes. An object of the present invention is to provide a wireless charging power receiver supporting a plurality of wireless charging schemes capable of accurately determining a wireless charging scheme of the wireless charging power transmitter by identifying a first wireless charging scheme corresponding to the converted bit data.

An apparatus for receiving wireless charging power supporting a plurality of wireless charging schemes according to an embodiment of the present invention stores and maintains a bit table in which different preset ranges of bit data are recorded for each of a plurality of different wireless charging schemes. A bit table holding unit, a charging power receiving unit receiving communication charging power for wireless charging transmitted from a wireless charging power transmitting device, and when the communication charging power in an AC form is applied to the charging power receiving unit, A PWM converter for sensing an AC voltage applied to a charging power receiver and converting the AC voltage into a pulse width modulation (PWM) signal, generating a clock signal having a predetermined period, and generating the PWM signal and the clock signal. Is included in the high pulse signal within one period of the PWM signal A clock measuring unit for measuring the number of clocks of the clock signal, and converting the number of clocks into bit data and recording corresponding to the range of bit data including the converted bit data on the bit table. A response signal for transmitting a response signal for the communication charging power to the wireless charging power transmitter based on a wireless charging method checking unit for confirming a wireless charging method and a communication protocol preset according to the first wireless charging method. It includes a transmission unit.

The wireless charging power receiving apparatus supporting a plurality of wireless charging schemes according to the present invention converts an input AC voltage by the communication charging power into a pulse width modulation (PWM) signal when communication charging power is received from the wireless charging power transmitter. After generating a clock signal having a predetermined period, the number of clocks included in the high pulse signal of the PWM signal is measured, and then the number of clocks is converted into bit data to convert each other into a plurality of wireless charging schemes. By confirming the first wireless charging method corresponding to the converted bit data with reference to a bit table in which a range of other bit data is recorded, the wireless charging method of the wireless charging power transmitter can be accurately determined.

1 is a diagram illustrating a structure of a wireless charging power receiving apparatus supporting a plurality of wireless charging schemes according to an embodiment of the present invention.

2 is a view for explaining a wireless charging power receiving apparatus supporting a plurality of wireless charging schemes according to an embodiment of the present invention.

As the invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. In describing the drawings, similar reference numerals are used for similar elements.

When a component is referred to as being "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that other components may be present in between. Should be. On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that there is no other component in between.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

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

1 is a diagram illustrating a structure of a wireless charging power receiving apparatus supporting a plurality of wireless charging schemes according to an embodiment of the present invention.

Referring to FIG. 1, a wireless charging power receiver 110 supporting a plurality of wireless charging schemes according to an embodiment of the present invention may include a bit table maintaining unit 111, a charging power receiving unit 112, and a pulse width (PWM). Modulation) includes a converter 113, a clock measuring unit 114, a wireless charging method checking unit 115, and a response signal transmitting unit 116.

The bit table holding unit 111 stores and maintains a bit table in which different preset ranges of bit data are recorded for each of a plurality of different wireless charging schemes.

In this regard, information may be recorded in the bit table as shown in Table 1 below.

Wireless charging schemes Range of bit data Wireless charging method 1 0-1000 Wireless charging method 2 1001-1111 Wireless charging method 3 10000 ~ 11111 ... ...

The charging power receiver 112 receives charging power for communication for connection with the wireless charging power transmitter 130 transmitted from the wireless charging power transmitter 130.

In this regard, the wireless charging power transmitter 130 includes a primary coil for transmitting charging power, and the charging power receiver 112 is magnetically coupled to each other by inductive coupling with the primary coil. It may include a secondary coil.

Thus, the magnetic field generated by the primary coil induces an induced current in the secondary coil, so that the charging power receiver 112 may receive the charging power for communication from the wireless charging power transmitter 130. .

In this case, the wireless charging power transmitter 130 rectifies the AC voltage from the commercial AC power source to DC to generate a magnetic field through the primary coil, and then uses the rectified DC voltage to generate a high frequency AC voltage above the commercial frequency. A pulse may be generated and applied to the primary coil to generate a magnetic field.

Accordingly, the charging power receiver 112 may receive the AC charging power for communication, and when the AC charging power for the AC is applied to the charging power receiver 112, the PWM converter 113 may perform the communication. An AC voltage applied to the charging power receiver 112 is sensed by the charging power to convert the AC voltage into a PWM signal.

At this time, according to an embodiment of the present invention, the PWM converter 113 senses the AC voltage and converts the signal portion having a positive value from the AC voltage into a high pulse signal, the signal portion having a negative value By converting the signal into a low pulse signal, the AC voltage can be converted into the PWM signal.

The clock measuring unit 114 generates a clock signal having a predetermined period, compares the PWM signal with the clock signal, and includes the clock signal that can be included in a high pulse signal within one period of the PWM signal. Measure the number of clocks.

The wireless charging method checking unit 115 converts the number of clocks into bit data and then checks a first wireless charging method recorded corresponding to a range of bit data including the converted bit data on the bit table. do.

The response signal transmitter 116 transmits the response signal to the wireless charging power transmitter 130 based on a communication protocol preset in accordance with the first wireless charging scheme.

Hereinafter, an operation of the wireless charging power receiver 110 supporting a plurality of wireless charging schemes according to the present invention will be described in detail with reference to FIG. 2.

2 is a diagram illustrating a wireless charging power receiver 110 supporting a plurality of wireless charging schemes according to an embodiment of the present invention.

First, it is assumed that an AC voltage applied by the charging power for communication received from the wireless charging power transmitter 130 to the charging power receiver 112 has a signal waveform of 210.

In this case, the PWM converter 113 may sense the AC voltage having the signal waveform of 210 and convert the AC voltage into a PWM signal having the signal waveform of 220.

In this regard, the PWM converter 113 senses the AC voltage and converts the signal portions 211 and 212 having a positive value from the AC voltage into the high pulse signals 221 and 222 and having a negative value. By converting the signal portions 213 and 214 into low pulse signals 223 and 224, the alternating current voltage shown at 210 can be converted into the PWM signal as shown at 220.

Then, the clock measuring unit 114 generates a clock signal having a predetermined period as shown by reference numeral 230, compares the PWM signal with the clock signal, and generates a high pulse within one period of the PWM signal. The number of clocks of the clock signal included in the signal may be measured.

2, the number of clocks of the clock signal that can be included in the high pulse signals 221 and 222 within one period of the PWM signal shown by reference numeral 220 is shown as "9". It is.

As such, when the number of clocks is measured as "9", the wireless charging method checking unit 115 may convert the number of clocks of "9" into bit data of "1001" in binary.

Then, the wireless charging method checking unit 115 confirms the first wireless charging method recorded corresponding to the range of the bit data including the converted bit data "1001" on the bit table as shown in Table 1 above. Can be.

In Table 1, since the first wireless charging method recorded corresponding to the range of the bit data including the bit data “1001” is “wireless charging method 2”, the wireless charging method checking unit 115 performs the first charging. You can check the "wireless charging method 2" as a wireless charging method.

Thereafter, the response signal transmitter 116 transmits a response signal to the communication charging power based on a communication protocol preset according to the first wireless charging method “wireless charging method 2”. 130).

In this case, according to an embodiment of the present invention, the wireless charging power receiver 110 supporting the plurality of wireless charging schemes may further include a communication protocol information table holding unit 117.

The communication protocol information table holding unit 117 stores and maintains a communication protocol information table in which information on communication protocols corresponding to the plurality of different wireless charging schemes is recorded.

In this regard, information may be recorded in the communication protocol information table as shown in Table 2 below.

Wireless charging schemes Communication protocol information Wireless charging method 1 Communication protocol 1 Wireless charging method 2 Communication protocol 2 Wireless charging method 3 Communication protocol 3 ... ...

In this case, when the confirmation of the first wireless charging scheme is completed, the response signal transmitter 116 confirms the information on the communication protocol corresponding to the first wireless charging scheme from the communication protocol information table, and then confirms the checked communication protocol. Based on the response signal for the communication charging power may be transmitted to the wireless charging power transmission device 130.

That is, when the first wireless charging method is confirmed as "wireless charging method 2", the response signal transmitter 116 may correspond to the "wireless charging method 2" from the communication protocol information table as shown in Table 2 above. After confirming the information on the "communication protocol 2", based on the identified "communication protocol 2" may transmit a response signal for the communication charging power to the wireless charging power transmission device 130.

According to an embodiment of the present invention, the plurality of different wireless charging schemes may include wireless charging of WPC (Wireless Power Consortium), wireless charging of PMA (Power Matters Alliance), and A4WP (Alliance for Wireless Power). It may be a wireless charging method.

In this case, according to an embodiment of the present invention, when the first wireless charging method identified by the wireless charging method checking unit 115 is the wireless charging method of the WPC method or the wireless charging method of the PMA method, a response signal is transmitted. The unit 116 may transmit the response signal to the wireless charging power transmitter 130 through in-band communication through the 110-205 kHz or the 110-357 kHz band, and the first wireless charging scheme may be In the case of the A4WP wireless charging method, the response signal transmitter 116 transmits the response signal to the wireless charging power transmission device in an out-of-band manner through Bluetooth communication in the 2.4 GHz band. 130).

In addition, according to an embodiment of the present invention, the wireless charging method checking unit 115 is the first wireless charging method that is recorded corresponding to the range of the bit data including the converted bit data on the bit table When the WPC scheme and the PMA scheme overlap, the first wireless charging scheme may be identified as the WPC scheme.

In this regard, since the WPC method transmits the communication charging power through the 110-205 kHz band, and the PMA method is specified to transmit the communication charging power through the 110-357 kHz band, the WPC method and the PMA method There may be a portion where the frequency band for transmitting the communication charging power overlap.

For this reason, information on the range of the bit data overlapping with respect to the WPC method and the PMA method may be recorded on the bit table as shown in Table 1 above.

Accordingly, after the number of clocks is converted into bit data by the wireless charging method checking unit 115, the first wireless charging method corresponding to the range of bit data including the converted bit data is identified on the bit table. When the WPC scheme and the PMA scheme overlap with each other in the first wireless charging scheme recorded corresponding to the bit data range including the converted bit data, the WPC scheme and the PMA scheme may be used. The WPC method may be confirmed as the first wireless charging method.

Thereafter, the response signal transmitter 116 may transmit a response signal to the wireless charging power transmitter 130 based on the communication protocol preset according to the WPC scheme.

Thereafter, the response signal transmitter 116 determines whether the wireless charging power is normally received from the wireless charging power transmitter 130 within a predetermined time from when the response signal is transmitted to the wireless charging power transmitter 130. You can check it.

If the wireless charging power is normally received from the wireless charging power transmitter 130 within the predetermined time, the wireless charging power transmitter 130 is the wireless charging power transmitter 130 according to the WPC method. Therefore, the wireless charging power receiver 110 supporting the plurality of wireless charging schemes may receive the wireless charging power from the wireless charging power transmitter 130 in the WPC manner.

However, if it is determined that the wireless charging power is not normally received from the wireless charging power transmitter 130 within the predetermined time, the wireless charging power transmitter 130 is a wireless charging method of the WPC method Since not, the wireless charging method checking unit 115 may reset the first wireless charging method to the PMA method.

Then, the response signal transmitter 116 retransmits the response signal for the communication charging power to the wireless charging power transmission device 130 based on a communication protocol preset in accordance with the PMA scheme, thereby transmitting wireless charging power. The apparatus 130 and the wireless charging power receiver 110 supporting the plurality of wireless charging schemes may assist the wireless charging of the battery according to the PMA scheme.

According to an embodiment of the present invention, the wireless charging power receiver 110 supporting a plurality of wireless charging schemes includes a voltage table holding unit 118, a current table holding unit 119, an input checking unit 120, and a voltage. The determination unit 121, the current determination unit 122, and the reception blocking unit 123 may be further included.

The voltage table holding unit 118 stores and maintains a voltage table in which a predetermined first peak value for different input voltages is recorded for each of the plurality of different wireless charging schemes.

For example, in the case of WPC wireless charging, the limit input voltage to be applied to the wireless charging power receiver 110 supporting a plurality of wireless charging schemes is defined as 15V. In this case, the first peak value selected for the wireless charging method of the WPC method may be defined as “15V” on the voltage table.

In addition, in the case of A4WP wireless charging, the limit input voltage to be applied to the wireless charging power receiver 110 supporting a plurality of wireless charging schemes is defined as 18V, and when it exceeds this, A4WP wireless charging In this case, the first peak value selected for the A4WP wireless charging method may be defined as “18V” on the voltage table.

The current table holding unit 119 stores and maintains a current table in which a predetermined second peak value for different input currents is recorded for each of the plurality of different wireless charging schemes.

For example, in the case of WPC wireless charging, the limit input current to be applied to the wireless charging power receiver 110 supporting a plurality of wireless charging schemes is defined as 2A. May not be able to support normally, the second peak value selected for the wireless charging method of the WPC method may be defined as "2A" on the current table.

In addition, in the case of A4WP wireless charging, the limit input current to be applied to the wireless charging power receiver 110 supporting a plurality of wireless charging schemes is defined as 1A, and when it exceeds this, A4WP wireless charging May not normally support, the second peak value selected for the A4WP wireless charging method may be defined as “1A” on the current table.

The input confirmation unit 120 after the transmission of the response signal for the communication charging power is completed from the wireless charging power transmission device 130 based on the communication protocol that is set in advance according to the first wireless charging method is the wireless charging power When received, check the input voltage and the input current according to the received wireless charging power.

The voltage determination unit 121 determines whether the input voltage exceeds a predetermined first peak value recorded corresponding to the first wireless charging scheme on the voltage table.

The current determiner 122 determines whether the input current exceeds a predetermined second peak value recorded corresponding to the first wireless charging scheme on the voltage table.

The reception blocking unit 123 determines that the input voltage exceeds a predetermined first peak value recorded corresponding to the first wireless charging method, or records the input current corresponding to the first wireless charging method. When it is determined that the predetermined second peak value is exceeded, reception of the wireless charging power transmitted from the wireless charging power transmitter 130 is blocked.

In addition, according to an embodiment of the present invention, when the wireless charging power receiving apparatus 110 supporting the plurality of wireless charging schemes is completed, the first wireless charging scheme is determined. In order to optimally support charging of the battery after receiving the wireless charging power from the wireless charging power transmitter 130, the rectifier or the constant voltage included in the wireless charging power receiver 110 supporting a plurality of wireless charging schemes. And a control unit (not shown) for setting an operation setting value of wireless charging components such as a constant current unit to a value optimized for the first wireless charging scheme.

As a result, the wireless charging power receiver 110 supporting a plurality of wireless charging schemes according to the present invention, when the communication charging power is received from the wireless charging power transmission device 130, PWM input voltage by the communication charging power PWM Convert the signal into a signal, generate a clock signal having a predetermined period, measure the number of clocks that can be included in the high pulse signal of the PWM signal, and convert the number of clocks into bit data to form a plurality of wireless charging schemes. By confirming the first wireless charging method corresponding to the converted bit data with reference to a bit table in which a range of other bit data is recorded, the wireless charging method of the wireless charging power transmitter 130 may be accurately determined.

As described above, the present invention has been described by specific embodiments such as specific components and the like, but the embodiments and drawings are provided only to help a more general understanding of the present invention, and the present invention is not limited to the above embodiments. For those skilled in the art, various modifications and variations are possible from these descriptions.

Therefore, the spirit of the present invention should not be limited to the described embodiments, and all the things that are equivalent to or equivalent to the claims as well as the following claims will belong to the scope of the present invention. .

Claims (5)

A bit table holding unit which stores and maintains a bit table in which different preset ranges of bit data are recorded for a plurality of different wireless charging schemes; A charging power receiver configured to receive communication charging power for connection with the wireless charging power transmitter transmitted from a wireless charging power transmitter; When the communication charging power in the form of AC is applied to the charging power receiver, the PWM conversion senses an AC voltage applied to the charging power receiver by the communication charging power and converts the AC voltage into a pulse width modulation (PWM) signal. part; A clock that generates a clock signal having a predetermined period, and compares the PWM signal with the clock signal to measure the number of clocks of the clock signal that can be included in a high pulse signal within one period of the PWM signal Measuring unit; A wireless charging method checking unit for converting the number of clocks into bit data and checking a first wireless charging method recorded corresponding to a range of bit data including the converted bit data on the bit table; And Response signal transmission unit for transmitting a response signal for the communication charging power to the wireless charging power transmission device based on a communication protocol preset in accordance with the first wireless charging method Wireless charging power receiving apparatus supporting a plurality of wireless charging schemes including a. The method of claim 1, The PWM converter Converting the AC voltage into the PWM signal by sensing the AC voltage and converting a signal portion having a positive value from the AC voltage into a high pulse signal and converting a signal portion having a negative value into a low pulse signal. Wireless charging power receiving device supporting a plurality of wireless charging schemes. The method of claim 1, A communication protocol information table holding unit which stores and maintains a communication protocol information table in which information on communication protocols corresponding to the plurality of different wireless charging methods is recorded. More, The response signal transmission unit When the confirmation of the first wireless charging method is completed, after confirming the information on the communication protocol corresponding to the first wireless charging method from the communication protocol information table, the response to the communication charging power based on the confirmed communication protocol Wireless charging power receiver for supporting a plurality of wireless charging schemes for transmitting a signal to the wireless charging power transmission device. The method of claim 1, The plurality of different wireless charging methods are wireless charging of WPC (Wireless Power Consortium), wireless charging of PMA (Power Matters Alliance) and wireless charging of A4WP (Alliance for Wireless Power), The wireless charging method confirmation unit When the WPC scheme and the PMA scheme overlap with the first wireless charging scheme recorded corresponding to a range of bit data including the converted bit data on the bit table, the first wireless charging scheme Is confirmed by the WPC method, The response signal transmission unit The wireless charging power is normally received from the wireless charging power transmitter within a predetermined time after transmitting a response signal for the communication charging power to the wireless charging power transmitter based on a communication protocol preset in accordance with the WPC scheme. Check whether or not The wireless charging method confirmation unit If it is determined that the wireless charging power is not normally received from the wireless charging power transmitter within the predetermined time, the first wireless charging method is reset to the PMA method, The response signal transmission unit And a plurality of wireless charging schemes for retransmitting a response signal for the communication charging power to the wireless charging power transmitter based on a communication protocol preset in accordance with the PMA scheme. The method of claim 1, A voltage table holding unit for storing and maintaining a voltage table in which a predetermined first peak value for different input voltages is recorded for each of the plurality of different wireless charging schemes; A current table holding unit storing and maintaining a current table in which a predetermined second peak value for different input currents is recorded for each of the plurality of different wireless charging schemes; When the wireless charging power is received from the wireless charging power transmitter based on the communication protocol preset in accordance with the first wireless charging method after the transmission of the response signal for the communication charging power is completed, the received wireless charging power An input confirmation unit checking an input voltage and an input current according to the input voltage; A voltage determination unit determining whether the input voltage exceeds a predetermined first peak value recorded corresponding to the first wireless charging scheme on the voltage table; A current determination unit determining whether the input current exceeds a predetermined second peak value recorded corresponding to the first wireless charging scheme on the voltage table; And The input voltage is determined to exceed a predetermined first peak value recorded in correspondence with the first wireless charging method, or the input current is selected second peak in correspondence with the first wireless charging method. When it is determined that the value is exceeded, the reception blocker for blocking the reception of the wireless charging power transmitted from the wireless charging power transmission device Wireless charging power receiving apparatus for supporting a plurality of wireless charging schemes further comprising.

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