Magnetic displacement control module and electronic device including same

Abstract

One embodiment of the present disclosure may provide a wireless power transmission device including a resonator including at least one coil and at least one capacitor, and a magnetic displacement control module including: a first magnetic substance portion; a second magnetic substance portion; a modulator for controlling a gap between the first magnetic substance portion and the second magnetic substance portion; and a driving unit for driving the modulator, in which a first magnetic substance portion and a second magnetic substance portion of the magnetic displacement control module are arranged to cover at least a portion of the at least one coil. Various other embodiments may also be applied.

Description

Technical Field

[0001] Various embodiments of the present disclosure relate to a module for controlling the displacement of a magnetic substance and an electronic device therein. Background Art

[0002] Wireless charging technology uses wireless power transmission / reception. For example, wireless charging can automatically charge the battery of a mobile phone by simply placing the mobile phone on a wireless power transmission device (e.g., a charging pad) without connecting via a separate charging connector. Wireless communication technology eliminates the need for a connector for powering electronic devices, thus providing enhanced waterproofness, and also eliminates the need for a wired charger, thereby providing better portability.

[0003] Recently, with the development of wireless charging technology, research is being conducted on methods of charging various other electronic devices (wireless power receivers) by powering other electronic devices from an electronic device (resonator). There are several different types of wireless charging, such as electromagnetic induction using a coil, resonance, and radio frequency (RF) / microwave radiation that converts electrical energy into electromagnetic waves and transmits microwaves.

[0004] For example, wireless charging technology using electromagnetic induction or resonance has recently been widely used in electronic devices such as smart phones. If a resonator (power transmission unit (PTU)) and a wireless power receiver (power receiving unit (PRU) (e.g., a smart phone or wearable electronic device) are in contact or close to each other within a predetermined distance, the battery of the wireless power transmitter can be charged by electromagnetic induction or electromagnetic resonance between the transmission coil of the resonator and the receiving coil of the wireless power receiver.

[0005] Power transmission by electromagnetic induction is a method for transmitting power between a primary coil and a secondary coil using magnetic induction. If AC current flows through the primary coil, a time-varying magnetic field is generated around the primary coil, and an induced electromotive force is generated at the secondary coil at the receiving end through this magnetic field, thereby transmitting power. Due to its excellent transmission efficiency, electromagnetic induction currently occupies the position of the main wireless charging technology.

[0006] Electromagnetic induction has the widest use and has applications in various devices. The contactless charging technology applied to conventional electric toothbrushes, shavers, and smart devices adopts the electromagnetic induction scheme. However, if the electronic device is not placed at a predetermined position of the wireless power transmission device or is not placed in a specific charging direction, the wireless charging technology based on electromagnetic induction may have the problem of low charging efficiency. Since the wireless charging technology using the electromagnetic induction scheme requires a short distance between the first coil and the second coil for circuit transmission and reception, the distance between the electronic device and the wireless power transmission device is limited to be short. Summary of the invention

[0007] Technical Solution

[0008] According to one aspect of the present disclosure, a wireless power transmission device is provided, including a resonator and a magnetic material displacement control module. In the wireless power transmission device, the resonator may include at least one coil and at least one capacitor. The magnetic material displacement control module may include a first magnetic material portion and a second magnetic material portion, a modulator and a driver, the modulator being configured to adjust the gap between the first magnetic material portion and the second magnetic material portion, and the driver being configured to drive the modulator. The first magnetic material portion and the second magnetic material portion of the magnetic material displacement control module may be arranged to surround at least a portion of the at least one coil.

[0009] According to an embodiment of the present disclosure, a magnetic material displacement control module for impedance change of a resonator is provided. The magnetic material displacement control module may include a first magnetic material portion, a second magnetic material portion, a modulator and a driver, the second magnetic material portion may be coupled to the first magnetic material portion, the modulator is configured to adjust the gap between the first magnetic material portion and the second magnetic material portion, and the driver is configured to drive the modulator. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The foregoing and other aspects, configurations and / or advantages of various embodiments of the present disclosure will become more apparent from the following detailed description in conjunction with the accompanying drawings.

[0011] Figure 1a is a block diagram illustrating a wireless power transmission device and an electronic device according to an embodiment.

[0012] Figure 1b A wireless power transmission device and a plurality of electronic devices according to an embodiment are shown.

[0013] Figure 2a A wireless power transmission device and an electronic device according to an embodiment are shown.

[0014] Figure 2b is a detailed block diagram showing a power transmission circuit and a power reception circuit according to an embodiment.

[0015] Figure 3 is a perspective view showing a wireless power transmission device and at least one electronic device according to an embodiment.

[0016] Figure 4 is a perspective view showing a wireless power transmission apparatus according to an embodiment.

[0017] Figure 5 is a side view showing a wireless power transmission apparatus according to an embodiment.

[0018] Figure 6 is a graph illustrating impedance variation in a transmission coil included in a resonator according to variation in a horizontal width of a magnetic substance according to an embodiment.

[0019] Figure 7 is a graph showing impedance variation in a transmission coil included in a resonator according to variation of a vertical width of a magnetic substance according to an embodiment.

[0020] Figure 8 is a graph showing a magnetic flux density inside a magnetic substance according to a change in a vertical width of the magnetic substance according to an embodiment.

[0021] Fig. 9 is a perspective view illustrating a power transmission unit and a magnetic substance displacement control module according to an embodiment.

[0022] Fig.10 is a conceptual diagram illustrating a coil included in a resonator and first and second magnetic substance portions surrounding the coil according to an embodiment.

[0023] Fig.11 is a graph illustrating a change in impedance in a coil included in a resonator according to a change in a vertical width of a magnetic substance according to an embodiment.

[0024] Fig.12 It is shown Fig.11 An enlarged graph of a local interval of the graph.

[0025] Fig.13 is a conceptual diagram illustrating a wireless power transmission device including a power transmission unit and a magnetic substance displacement control module according to an embodiment.

[0026] Fig.14 is a perspective view showing a wireless power transmission apparatus according to an embodiment.

[0027] Fig.15a is a diagram illustrating a magnetic substance displacement control module according to an embodiment.

[0028] Fig.15b is a diagram illustrating a magnetic substance displacement control module according to an embodiment.

[0029] Fig.16 is a block diagram illustrating a power transmission unit and a magnetic substance displacement control module according to an embodiment.

[0030] Fig.17 is a perspective view showing a wireless power transmission device and an electronic device according to an embodiment.

[0031] Fig.182 is a diagram illustrating usage aspects of a wireless power transmission device and a magnetic substance displacement control module according to an embodiment.

[0032] Fig.19 It shows that according to Fig.17 A block diagram of a wireless power transmission device and a magnetic material displacement control module of an embodiment.

[0033] Fig. 20 It shows that according to Fig.17 Detailed block diagram of a power transmission circuit and a power receiving circuit of an embodiment.

[0034] Throughout the drawings, like reference numerals may be assigned to like parts, components and / or structures. DETAILED DESCRIPTION

[0035] Hereinafter, embodiments of the present disclosure are described with reference to the accompanying drawings.

[0036] In the present disclosure, the identifiers used to designate the corresponding steps are for the convenience of description, but not to limit the order of the steps. The steps may be performed in an order different from the order specified therein, unless the context clearly states that they are limited thereto.

[0037] Figure 1a is a block diagram illustrating a wireless power transmission device and an electronic device according to an embodiment. Figure 1b A wireless power transmission device and a plurality of electronic devices according to an embodiment are shown.

[0038] Reference Figure 1aAccording to the embodiment, the wireless power transmission device 100 can wirelessly transmit power 161 to the wireless power receiving device 150 (hereinafter referred to as "electronic device 150"). The wireless power transmission device 100 can transmit power 161 to the electronic device 150 according to various charging schemes. For example, the wireless power transmission device 100 can transmit power 161 according to an induction scheme. With the induction scheme, the wireless power transmission device 100 may include, for example, a power supply, a direct current (DC)-alternating current (AC) conversion circuit, an amplification circuit, an impedance matching circuit, at least one capacitor, at least one coil, and a communication modulation / demodulation circuit. The at least one capacitor and the at least one coil may together constitute a resonant circuit. The wireless power transmission device 100 may be implemented in a scheme defined in the Wireless Power Consortium (WPC) standard (or Qi standard). In addition, for example, the wireless power transmission device 100 can transmit power 161 according to a resonance scheme. Using a resonance scheme, the wireless power transmission device 100 may include, for example, a power supply, a DC-AC conversion circuit, an amplification circuit, an impedance matching circuit, at least one capacitor, at least one coil, and an out-of-band short-range communication module (e.g., a Bluetooth low energy (BLE) short-range communication module). The at least one capacitor and the at least one coil may constitute a resonance circuit. The wireless power transmission device 100 may be implemented in a scheme defined in the Alliance for Wireless Power (A4WP) standard (or the Air Fuel Alliance (AFA) standard). The wireless power transmission device 100 may include a coil, wherein if an AC current flows according to a resonance scheme or an induction scheme, the coil may generate a time-varying magnetic field whose size varies with time. The process of the wireless power transmission device 100 generating a magnetic field may be represented as the wireless power transmission device 100 outputting or wirelessly transmitting power 161. In addition, the electronic device 150 may include a coil that generates an induced electromotive force by generating a magnetic field whose size varies with time around it. The process of the electronic device 150 generating an induced electromotive force through the coil may be represented as power 161 being input to the electronic device 150 or the electronic device 150 wirelessly receiving power 161.

[0039] The wireless power transmission device 100 according to an embodiment of the present disclosure may communicate with the electronic device 150. For example, the wireless power transmission device 100 may communicate with the electronic device 150 according to an in-band scheme. The wireless power transmission device 100 or the electronic device 150 may change the load (or load impedance) on the data to be transmitted according to, for example, an on / off keying modulation scheme. The wireless power transmission device 100 or the electronic device 150 may determine the data transmitted from its relative device by measuring the change in load (or load impedance) or impedance based on the change in current, voltage, or power at both ends of the coil. For example, the wireless power transmission device 100 may communicate with the electronic device 150 according to an out-of-band scheme. The wireless power transmission device 100 or the electronic device 150 may transmit data using a short-distance communication module (e.g., a BLE communication module) that is separately provided from the coil or patch antenna. The frequency bands of the wireless power and short-distance communication modules are separated from each other. For example, for the AirFuel standard, the frequency band of the wireless power is 6.78 MHz, and the frequency band of the short-distance communication module is 2.4 GHz.

[0040] In the present disclosure, "the wireless power transmission device 100 or the electronic device 150" performs a specific operation may mean that various hardware devices (e.g., a processor, a coil, or a patch antenna) included in the wireless power transmission device 100 or the electronic device 150 perform a specific operation. "The wireless power transmission device 100 or the electronic device 150 performs a specific operation" may also mean that the processor controls another hardware device to perform a specific operation. "The wireless power transmission device 100 or the electronic device 150 performs a specific operation" may also mean that when an instruction for performing a specific operation stored in a storage circuit (e.g., a memory) of the wireless power transmission device 100 or the electronic device 150 is executed, the processor or another hardware device triggers the specific operation.

[0041] like Figure 1b As shown, the wireless power transmission device 100 can form an electrical connection with multiple electronic devices 150-1, 150-2, ..., and 150-n wirelessly. The multiple electronic devices may include, for example, at least one of a portable communication device (e.g., a smart phone), a wearable device (e.g., a watch, a wireless headset, an AR / VR device), a portable multimedia device (e.g., a touch pad or a laptop computer), a PDA, a PMP, a camera, a portable medical device, and a home appliance (e.g., a TV). Other various types of electronic devices may be applied.

[0042] The wireless power transmission device 100 may wirelessly transmit power to a plurality of electronic devices 150-1, 150-2, ..., and 150-n. For example, the wireless power transmission device 100 may transmit power to a plurality of electronic devices 150-1, 150-2, ..., and 150-n through a resonance scheme. When the wireless power transmission device 100 adopts a resonance scheme, the power transmittable / receivable distance between the wireless power transmission device 100 and the plurality of electronic devices 150-1, 150-2, ..., and 150-n may be 1m or less, preferably 30cm or less. As another example, the wireless power transmission device 100 may transmit power to a plurality of electronic devices 150-1, 150-2, ..., and 150-n through an induction scheme. When the wireless power transmission device 100 adopts an induction scheme, the power transmittable / receivable distance between the wireless power transmission device 100 and the plurality of electronic devices 150-1, 150-2, ..., and 150-n may preferably be 10cm or less. According to an embodiment, at least one of the plurality of electronic devices 150-1, 150-2, ..., and 150-n may receive power from the wireless power transmission device 100 through a resonance scheme, and at least one other electronic device 150 of the plurality of electronic devices 150-1, 150-2, ..., and 150-n may receive power from the wireless power transmission device 100 through an induction scheme.

[0043] The processor included in the wireless power transmission device 100 may control to wirelessly transmit the preset power 161 to the plurality of electronic devices 150-1, 150-2, ..., and 150-n. For example, the power preset for the plurality of electronic devices 150-1, 150-2, ..., and 150-n may be a power level set to activate (e.g., wake up) the processor included in the plurality of electronic devices 150-1, 150-2, ..., and 150-n. The preset power 161 can be set by considering various types of information for multiple electronic devices 150-1, 150-2, ... and 150-n (for example, various types of electronic devices 150-1, 150-2, ... and 150-n, information on various powers required for multiple electronic devices 150-1, 150-2, ... and 150-n, voltage or current information related to the various powers of multiple electronic devices 150-1, 150-2, ... and 150-n, information on various rated values ​​(for example, effective values) for multiple electronic devices 150-1, 150-2, ... and 150-n, information on orientations (for example, posture information) for multiple electronic devices 150-1, 150-2, ... and 150-n). For each of the plurality of electronic devices 150 - 1 , 150 - 2 , . . . , and 150 - n , the magnitude of the power 161 transmitted to the plurality of electronic devices 150 - 1 , 150 - 2 , . . . , and 150 - n may be the same or different.

[0044] The wireless power transmission device 100 may perform communication with a plurality of electronic devices 150-1, 150-2, ..., and 150-n individually, simultaneously or sequentially, selectively or independently. Each of the plurality of electronic devices 150-1, 150-2, ..., and 150-n may transmit data to / receive data from the wireless power transmission device 100 according to an in-band scheme or an out-of-band scheme.

[0045] Here, the data may be data for controlling power reception of each of the plurality of electronic devices. In addition, the data may include various information of the plurality of electronic devices 150-1, 150-2, ..., and 150-n.

[0046] Figure 2a A wireless power transmission device and an electronic device according to an embodiment are shown. Figure 2b is a detailed block diagram showing a power transmission circuit and a power reception circuit according to an embodiment.

[0047] Reference Figure 2aThe wireless power transmission device 100 according to the embodiment may include at least one of a processor 102, a short-range communication module 103, a memory 105, a power adapter 108, or a power transmission circuit 109. The electronic device 150 according to the embodiment may include at least one of a charger 151, a processor 152, a short-range communication module 153, a battery 154, a memory 156, or a power receiving circuit 159.

[0048] The power transmission circuit 109 according to the embodiment may wirelessly transmit the power 161 according to at least one of an induction scheme, a resonance scheme, or an electromagnetic wave scheme. Figure 2b The detailed configuration of the power transmission circuit 109 and the power receiving circuit 159 is described in more detail. The processor 102 can control the overall operation of the wireless power transmission device 100. For example, the processor 102 can determine whether to transmit power 161, control the size of power 161, or control at least one function of the electronic device 150 (for example, start or stop charging). The processor 102 or the processor 152 can be implemented in various circuits capable of performing calculations, such as a central processing unit (CPU) or other general-purpose processors, microprocessors, microcontrollers (MCUs) or field programmable gate arrays (FPGAs), but the type is not limited thereto. The processor 102 can send data to / receive data from the electronic device 150 via the short-range communication module 103. The data can be used to control wireless power transmission / reception. The short-range communication module 103 and the short-range communication module 153 can be implemented as, for example, an out-of-band short-range communication module (for example, a Bluetooth communication module (BT or BLE) or a near field communication (NFC) communication module) or an in-band communication load modulation communication module. In the in-band communication scheme, the load modulation communication module may include a switch and a virtual load (e.g., a virtual resistor or a virtual capacitor), the switch being connected directly or via another element to a coil of, for example, the power receiving circuit 159, and the virtual load being connected directly to the coil through the switch or connected to the coil through another element through the switch. The load modulation communication module may identify information based on a change in voltage or current applied to the coil in the power transmission circuit 109. The power adapter 108 may receive power from the power supply 106 and provide power to the power transmission circuit 109. The power adapter 108 may be, for example, a power interface, and according to implementations of various embodiments, the power adapter 211 may not be included in the wireless power transmission device 100.

[0049] The power receiving circuit 159 according to the embodiment may wirelessly receive power from the power transmission circuit 109 according to at least one of an induction scheme, a resonance scheme, or an electromagnetic wave scheme. The power receiving circuit 159 may perform power processing, such as rectifying the received alternating current (AC) power into a direct current (DC) waveform, converting voltage, or adjusting power. The charger 151 may charge the battery 154 with the received adjusted power (e.g., DC power). The charger 151 may adjust at least one of the voltage or current of the received power and transmit the adjusted power to the battery 154. The battery 154 may store power and transmit power to other hardware components. Although not shown, a power management integrated circuit (PMIC) (not shown) may receive power from the power receiving circuit 159 and transmit power to other hardware components, or the PMIC may receive power from the battery 154 and transmit power to other hardware components. In addition, the charger 151 may be configured to be included in the PMIC.

[0050] The processor 152 may control the overall operation of the electronic device 150. The memory 155 may store instructions for performing the overall operation of the electronic device 150. The memory 105 may store instructions for performing the overall operation of the wireless power transmission device 100. The memory 105 may store a lookup table for the relationship between the information obtained via the short-range communication module 103 and the size of the power to be transmitted or equation information for the relationship between the information obtained and the size of the power to be transmitted. The memory 105 or the memory 155 may be implemented in various types, such as a read-only memory (ROM), a random access memory (RAM), or a flash memory, but the type is not limited thereto.

[0051] Reference Figure 2b , the power transmission circuit 109 may include a power amplifier 171, a matching circuit 172 (or a matching network), and a transmission resonant circuit 173. The power amplifier 171 or the inverter circuit may convert the DC power received from the power adapter 108 into AC power. The frequency of the AC power may be set to 100kHz to 205kHz or 6.78MHz according to the standard, but is not limited thereto. The matching circuit 172 may change at least one of the capacitance or reactance of the circuit connected to the feeding component 173 under the control of the processor 102, thereby allowing the power transmission circuit 109 and the power receiving circuit 159 to impedance match each other. The transmission resonant circuit 173 may include at least one coil and at least one capacitor. If AC power (or current) is applied to the transmission resonant circuit 173, a magnetic field whose size varies with time may be formed from the transmission resonant circuit 173, and therefore, power in the form of an electromagnetic field may be output or transmitted to the power receiving circuit 159 of the electronic device 150. The power amplifier 171 and the matching circuit 172 may be arranged in a wireless power transmission device (e.g., described below). Figure 3The base housing of the wireless power transmission device 200 (eg, the base housing described below) Figure 3 The transmission resonant circuit 173 may be arranged in a resonator (eg, a resonator described below). Figure 3 resonator 220). An induced electromotive force may be generated in the receiving resonator 181 by a magnetic field whose size varies with time formed around the receiving resonator 181 of the power receiving circuit 159. Therefore, the power receiving circuit 159 can receive power wirelessly. Although not shown in the drawings, the receiving resonator 181 may include at least one coil and at least one capacitor. The rectifier circuit 182 may rectify the AC waveform of the received power. The conversion circuit 183 may adjust the voltage of the rectified power and transmit the result to the PMIC or the charger. The power receiving circuit 159 may also include a regulator. Optionally, the conversion circuit 183 may be replaced by a regulator. The matching circuit 184 may change at least one of the capacitance or reactance of the circuit connected to the receiving resonator 181 under the control of the processor 152, thereby allowing the power transmission circuit 109 and the power receiving circuit 159 to impedance match each other.

[0052] Return to reference Figure 2a , the wireless power transmission device 100 according to an embodiment of the present disclosure may include at least one sensor 107 .

[0053] The at least one sensor 107 may be a sensor for measuring the voltage and current of the wireless power transmission device 100. The wireless power transmission device 100 may measure the output impedance of the power amplifier 171 and / or the input impedance of the transmission resonance circuit 173 (e.g., the impedance of the signal input from the matching circuit 172 to the transmission resonance circuit 173) described below through the at least one sensor 107. For example, the transmission voltage V TX_IN and the transmission current I TX_IN The power consumption is monitored to detect the change in the input impedance of the transmission resonant circuit 173. If the impedance change is detected, it is possible to identify whether the electronic device 150 receiving wireless power is placed / restored, whether a foreign object is detected, a change in the amount of power received, etc. For example, when a plurality of electronic devices 150 are being charged by the wireless power transmission device 100, if any one of the electronic devices is moved so that the distance to the wireless power transmission device 100 is reduced, the received power and efficiency of another electronic device may be reduced. In consideration of the detected impedance change, the processor 102 may control the transmission and efficiency of wireless power to the plurality of electronic devices 150 according to a pre-specified algorithm or according to a command input from a user.

[0054] The electronic device 150 according to an embodiment of the present disclosure may include at least one sensor 157 .

[0055] For example, the electronic device 150 can detect the movement of the electronic device 150 by itself through at least one sensor 157 (e.g., a motion sensor). The motion sensor for detecting movement may include, for example, at least one sensor of a gyro sensor, an acceleration sensor, an angular velocity sensor, a gravity sensor, a geomagnetic sensor, and an infrared sensor. However, the type of sensor is not limited thereto. For example, the electronic device 150 can use at least one sensor 157 to measure the voltage V output from the rectifier circuit 182. RECT Based on the measured output voltage V RECT , the change in the positional relationship between the electronic device 150 and the wireless power transmission device 100 (whether it is close to or away from the resonator) can be identified. The data sensed by the sensor 157 can be provided to the processor 152, and the data received by the processor 152 can be provided to the wireless power transmission device 100 through the short-range communication module 153.

[0056] According to an embodiment, the processor 102 of the wireless power transmission device 100 may control transmission and efficiency of wireless power to the plurality of electronic devices 150 by using data detected from the sensor 107 and / or the sensor 157 .

[0057] For example, any one of the plurality of electronic devices 150 may be placed around the wireless power transmission device 100 while being put down. The electronic device 150 may be moved by the user and placed closer to the wireless power transmission device 100. In this case, the processor 102 of the wireless power transmission device 100 may use the data detected from the sensor 107 and / or the sensor 157 to determine that the electronic device 150 is put down, and determine that the electronic device 150 is close to the wireless power transmission device 100. In addition, when the wireless power transmission device (for example, the following will refer to Fig.16 The wireless power transmission device 300 described herein includes a plurality of resonators (eg, a first resonator placed horizontally (eg, a first resonator to be referred to below) Fig.16 The first resonator 320 described above) and the second resonator standing vertically (for example, as will be referred to below) Fig.16 When the processor 102 selects and uses the horizontally placed first resonator 320 based on the information indicating that the electronic device 150 is horizontally placed, the electronic device (eg, the second resonator 330 described below) is sent to the processor 102. Fig.16 The electronic device 350 described sends power.

[0058] Figure 3 A wireless power transmission device and at least one electronic device according to an embodiment are shown.

[0059] Reference Figure 3 , the wireless power transmission device 200 (eg, Figures 1a to 2a The wireless power transmission device 100 may include a base case 210 and a resonator 220. In addition, the electronic device 250 may be freely disposed around the wireless power transmission device 200, and a plurality of electronic devices 250 may be provided according to an embodiment.

[0060] According to an embodiment, the coordinate axes shown in the drawings of the present disclosure may refer to the direction in which the components face. Here, the coordinate axes may be coordinate axes X, Y, and Z in a three-dimensional (3D) space. Figure 3 , the X-axis may be an axis parallel to the vertical width direction of the wireless power transmission device 200, and the Y-axis may be an axis parallel to the horizontal width direction of the wireless power transmission device 200. The Z-axis may be an axis parallel to the height direction of the wireless power transmission device 200. Further, when the wireless power transmission device 200 is viewed from above, the wireless power transmission device 200 may be placed on a virtual plane including the X-axis and the Y-axis. The coupling relationship between each component may be described with reference to the various drawings disclosed in the present disclosure and the coordinate axes included therein. When describing a direction, when "negative / positive (- / +)" is not described, unless otherwise defined, it may be interpreted as including both the + direction and the - direction. In other words, the "X-axis direction" may be interpreted as including both the +X direction and the -X direction, and the "Y-axis direction" may be interpreted as including both the +Y direction and the -Y direction. When describing a direction, any one of the three axes facing the orthogonal coordinate system may include a direction facing parallel to the axis. It should be noted that for the sake of brevity of description, directions are defined relative to the Cartesian coordinate system shown in the accompanying drawings, and the description of these directions or components does not limit the various embodiments of the present disclosure. Figure 4 and Figure 5 The moving direction of the magnetic substance 280 described above can be defined as a direction parallel to the Y axis. Figure 4 , Fig. 9 and Fig.14 In the embodiment, the plane including the X-axis and the Y-axis may form a plane parallel to the ground. However, it should be noted that this is only for the convenience of description and does not limit the arrangement and / or operating scope of the components constituting the present invention.

[0061] The base shell 210 itself may form the appearance of the wireless power transmission device 200, or may be a part that forms the appearance of the wireless power transmission device 200 together with the resonator 220. Various electronic components included in the wireless power transmission device 200 (for example, the processor 102, the short-range communication module 103, the memory 105, the power adapter 108, and the power transmission circuit 109) may be accommodated in the internal space of the base shell 210. According to an embodiment, various electronic components may be integrated and accommodated in the wireless power transmission device 200. The shape of the base shell 210 of the wireless power transmission device 200 according to an embodiment of the present disclosure is not limited to any specific embodiment. For example, in Figure 3 In the illustrated embodiment, the base housing 210 may have an overall annular shape, but is not necessarily limited thereto, and other various embodiments may be applied, such as a cylindrical body and / or a polyhedron including a hexahedron.

[0062] The wireless power transmission device 200 may adopt a resonance scheme as a power transmission method for at least one electronic device 250 positioned 360 degrees around the wireless power transmission device 200. Therefore, the wireless power transmission device 200 may include a resonator 220. The resonator 220 may include at least one coil and at least one capacitor, and various shapes may be applied to the resonator 220, but for example, the resonator 220 may be formed in a ring shape (or a ring shape) in which a hollow portion H is formed. Figure 2a and Figure 2b The described transmission resonance circuit 173 may be implemented as a combination of at least one coil and at least one capacitor included in the resonator 220 .

[0063] According to an embodiment of the present disclosure, the wireless power transmission device 200 may perform a power output or transmission function for at least one electronic device 250 using a resonator 220. According to an embodiment, the resonator 220 may be supported by the base housing 210. For example, the resonator 220 may be electrically connected to the base housing 210 to be fed from the base housing 210. However, the present disclosure is not necessarily limited thereto, and according to another embodiment (for example, the resonator 220 described below) Fig. 9 In an embodiment of the present invention, the wireless power transmission device 200 may include only the resonator 220 without the base case 210. When the wireless power transmission device 200 includes only the resonator 220, the resonator 220 may be used in a manner of being electromagnetically coupled to another wireless power transmission device (or resonator).

[0064] According to an embodiment of the present disclosure, various display methods (e.g., LED lights, sounds, text messages, voices, etc.) may be provided to enable a user to intuitively recognize charging state monitoring information about at least one electronic device 250 and the power output or transmission function using the wireless power transmission device 200. To this end, the wireless power transmission device 200 may further include at least one output device for implementing various display methods on the base housing 210 and / or the resonator 220. In addition, the charging state monitoring information here may include at least one of voltage information, current information, charging state (SOC) information, and health state (SOH) information about whether it can be charged. The power state of the electronic device may be identified by voltage information or current information. The power state may mean the amount of electric energy remaining before the battery of the electronic device 250 is discharged. For example, the power state may be expressed as a percentage, such as 0%, 10%, 50%, or 100%. The charging state (SOC) may indicate whether the electronic device 250 is being charged. The wireless power transmission device 200 of the present disclosure may also be used to display health state (SOH) information about whether the electronic device 250 is chargeable. The charging state monitoring information is not limited thereto.

[0065] The wireless power transmission device 200 may obtain position information about at least one electronic device 250 located 360 degrees around the wireless power transmission device 200. In order to obtain the position information, a phased array coil or a UWB radar sensor may be used. Optionally, the phased array coil and the UWB radar sensor may be used together to further improve the accuracy of the position information. The wireless power transmission device 200 may be connected to the wireless power transmission device 200 through a short-range communication module (e.g., Figure 2a According to an embodiment, a wireless power transmission device 200 may be provided, wherein when the wireless power transmission device 200 charges a plurality of electronic devices 250, the wireless power transmission device 200 may cover the entire 360 ​​degrees around the wireless power transmission device 200, wireless power may be supplied to the plurality of electronic devices 250 through one primary coil, and charging may be performed even when not placed in a designated area.

[0066] The schematic flow of the power transmission method, the location information display method, and the charging state information display method for at least one electronic device 250 arranged around the wireless power transmission device 200 according to the embodiment may be as follows. First, the wireless power transmission device 200 may send a load detection beacon and / or a power beacon, and receive feedback of various information including voltage / power information from the electronic device that reacts thereto. The information received as feedback from the electronic device and the information received through the short-range communication module (e.g., Figure 2aThe information about the electronic device can be obtained using the short-distance communication module 103 included in the wireless power transmission device 200. Figure 2a The short-distance communication module 103 of the wireless power transmission device 200 is used to identify the unique ID of at least one electronic device 250. In addition, a pairing operation can be performed on the electronic device with the authenticated ID. The paired wireless power transmission device 200 and the electronic device can transmit and receive various data related to, for example, the power status and the charging status. Further, the location information of at least one electronic device 250 arranged around the wireless power transmission device 200 can be schematically obtained.

[0067] Assuming that the wireless power transmission device 200 is fixed at a certain position, power can be transmitted only when the electronic device 250 is arranged within a specified distance from the wireless power transmission device 200. For example, the effective distance of wireless power transmission between the wireless power transmission device 200 and the electronic device 250 may be 1 m or less, preferably 30 cm or less. Figure 3 A first effective distance A is shown as an example of an effective distance for wireless power transmission. Figure 3 In the embodiment shown, since the electronic device 250 is arranged within the effective distance for wireless power transmission (e.g., the first effective distance A), the charging operation can be performed normally. On the contrary, if the electronic device 250 is arranged outside the effective distance, charging may not be performed or the charging efficiency may be very low. According to an embodiment, a wireless power transmission device of a resonance scheme can be provided, which can be charged regardless of the direction in which the electronic device 250 is placed and the position of the electronic device 250, as long as the electronic device 250 is within a specified distance around the wireless power transmission device 200.

[0068] In addition, as the electronic device 250 moves closer to the wireless power transmission device 200, the impedance of the transmission resonance circuit 173 included in the wireless power transmission device 200 may decrease due to the influence of metal included in the electronic device 250. Figure 3 As shown, when the electronic device 250 approaches the wireless power transmission device 200 from the first position P1 to the second position P2, the impedance of the transmission resonance circuit 173 may decrease. If the impedance of the transmission resonance circuit 173 decreases to a level exceeding -5%, this may cause the resonant frequency for the wireless power transmission device 200 to transmit power to the electronic device 250 to increase by about 170kHz, for example, from about 6.78MHz to about 6.95MHz. Since such a change (variation) in the resonant frequency may drastically reduce the charging efficiency of the electronic device 250 and cause damage to the power amplifier 171 included in the wireless power transmission device 200, an alternative solution that can compensate for the impedance change or (inductance change) may be required.

[0069] Figure 4 is a perspective view showing a wireless power transmission apparatus according to an embodiment. Figure 5 is a side view showing a wireless power transmission apparatus according to an embodiment.

[0070] The wireless power transmission device 200 according to the present disclosure may further include a magnetic material displacement control module for compensating for impedance changes (hereinafter, reference will be made to Fig. 9 The magnetic substance displacement control module 280 described above is a component that is different from the base housing 210 or the resonator 220 and can be provided separately from the resonator 220 so as to be detachable from the resonator 220. In the present disclosure, the base housing 210 and the resonator 220 may be referred to as a power transmission unit 201 to be distinguished from the magnetic substance displacement control module.

[0071] Figure 4 and Figure 5 At least a portion of the magnetic substance 280' included in the magnetic substance displacement control module is shown and can be referred to as Figure 4 and Figure 5 The embodiment describes the principle of compensating impedance according to the operation of the magnetic substance displacement control module.

[0072] like Figure 4 and Figure 5 As shown, at least a portion of the magnetic substance 280' may be disposed adjacent to the resonator 220 of the wireless power transmission device 200. The magnetic substance 280' may be configured to move in one direction (e.g., the Y-axis direction) adjacent to the resonator 220 of the wireless power transmission device 200, and the intensity of the magnetic field B applied around the resonator 220 may be changed by the movement of the magnetic substance 280'.

[0073] Figure 6 is a graph illustrating impedance variation in a transmission coil included in a resonator according to variation in a horizontal width of a magnetic substance according to an embodiment. Figure 7 is a graph showing impedance variation in a transmission coil included in a resonator according to variation in a vertical width of a magnetic substance according to an embodiment. Figure 8 is a graph showing magnetic flux density inside a magnetic substance according to a change in a vertical width of the magnetic substance according to an embodiment.

[0074] Refer to Figures 4 to 6, the magnetic substance 280' may be moved at a position adjacent to the resonator 220 of the wireless power transmission device 200. The moving direction of the magnetic substance 280' may be parallel to the Y-axis direction. In this case, when the magnetic substance 280' moves, the strength of the magnetic field B may change, which may be proportional to the change in the inductance of the resonator 220. As the magnetic substance 280' gets closer to the resonator 220, the magnetic field strength may increase and the inductance of the resonator 220 may increase. Here, the magnitude of the inductance may be related to the first width L1 of the magnetic substance 280'. The first width L1 of the magnetic substance 280' may be the width of the magnetic substance 280' measured along a direction perpendicular to the moving direction of the magnetic substance 280'. Hereinafter, the width of the magnetic substance 280' measured along a direction perpendicular to the moving direction of the magnetic substance 280' may be referred to as a "vertical width". For example, Figure 6 A graph showing changes in inductance magnitude when the first width L1 of the magnetic substance 280' is 80 mm and 50 mm and other conditions are set the same is shown, and it can be recognized that the larger the first width L1, the greater the change in inductance magnitude with the moving distance of the magnetic substance 280'.

[0075] Reference Figure 4 , Figure 5 , Figure 7 and Figure 8 , as the magnetic substance 280' moves near the resonator 220 of the wireless power transmission device 200, the change in the intensity of the magnetic field B or the change in inductance may be related to the second width D1 of the magnetic substance 280'. The second width D1 of the magnetic substance 280' may be the width of the magnetic substance 280' measured along a direction parallel to the moving direction of the magnetic substance 280'. Hereinafter, the width of the magnetic substance 280' measured along a direction parallel to the moving direction of the magnetic substance 280' may be referred to as a "horizontal width". For example, Figure 7 and Figure 8 A graph is shown of the change in magnetic field magnitude and the magnetic flux density within the magnetic substance 280' when the second width D1 of the magnetic substance 280' is 50 mm, 40 mm and 30 mm and other conditions are set to be the same, and it can be identified that the larger the second width D1, the greater the change in inductance magnitude and the change in magnetic flux density according to the moving distance of the magnetic substance 280'.

[0076] refer to Figures 6 to 8 From the simulation results, it can be recognized that the magnetic field around the resonator 220 can be changed by moving the magnetic substance 280' having a predetermined size around the resonator 220. Figure 7 and Figure 8If the impedance is the largest, it can be recognized that the magnetic flux density in the magnetic substance 280' increases to the maximum. According to the present disclosure, a wireless power transmission device is provided, which includes a module for controlling the displacement of a magnetic substance arranged around a resonator and a resonator.

[0077] Fig. 9 is a perspective view showing a resonator and a magnetic substance displacement control module according to an embodiment. Fig.10 is a conceptual diagram illustrating a transmission coil included in a resonator and first and second magnetic substance portions surrounding the transmission coil according to an embodiment.

[0078] According to an embodiment of the present disclosure, the resonator 220 may include at least one coil and at least one capacitor, and the magnetic displacement control module 280 may include a first magnetic substance portion 281 and a second magnetic substance portion 282. Here, the first magnetic substance portion 281 and / or the second magnetic substance portion 282 may be formed of ferrite.

[0079] exist Fig. 9 In the embodiment, as a wireless power transmission device, Figure 2a Unlike the embodiment of the present disclosure, the wireless power transmission device 200' does not include the processor 102, the short-distance communication module 103, the memory 105, the power adapter 108 and / or the power transmission circuit 109, but simply includes a resonator 220, wherein the resonator 220 includes at least one coil and at least one capacitor. The wireless power transmission device 200' according to the embodiment of the present disclosure can use the power transmission unit 201 that does not include the processor 102, the short-distance communication module 103, the memory 105, the power adapter 108 and / or the power transmission circuit 109 to transmit power to an electronic device (e.g., Figure 2a electronic device 150) to wirelessly transmit power.

[0080] According to an embodiment, the resonator 220 may be as follows Figure 3 As in the embodiment shown, it is arranged perpendicular to the ground, but it can be arranged as Fig. 9 or as described below Fig.14 The resonator 220 may be arranged at a predetermined angle relative to the ground as in the embodiment shown, or may be arranged horizontally to the ground. In this way, different arrangements and placement forms of the resonator 220 may be applied according to the embodiment.

[0081] Reference Fig. 9 and Fig.10 In the present disclosure, the first magnetic substance portion 281 and the second magnetic substance portion 282 of the magnetic substance displacement control module 280 may be arranged to surround at least a portion of the at least one coil 221. Fig. 9 and Fig.10In the embodiment of the present invention, it is shown that the first magnetic material portion 281 has a flat shape and the second magnetic material portion 282 has a substantially "U" shape, but the present disclosure is not necessarily limited to this, and the shapes of the first magnetic material portion 281 and the second magnetic material portion 282 can be formed in various ways according to the embodiment. For example, the first magnetic material portion 281 and the second magnetic material portion 282 can both have a "U" shape. In the present disclosure, the impedance of at least one coil 221 included in the resonator 220 can be changed by adjusting the gap between the first magnetic material portion 281 and the second magnetic material portion 282 of the magnetic material displacement control module 280. The strength of the magnetic field can be determined by magnetic resistance. The magnetic resistance can decrease as the distance between the first magnetic material portion 281 and the second magnetic material portion 282 decreases, and having a low magnetic resistance can mean having a high-intensity magnetic field. To this end, the magnetic material displacement control module 280 may include a modulator for adjusting the gap between the first magnetic material portion 281 and the second magnetic material portion 282 (hereinafter, reference will be made to Fig.15a and Fig.15b The modulator 284 described above), and a driver for driving the modulator (hereinafter, reference will be made to Fig.13 Driver 283 described).

[0082] According to an embodiment, the magnetic substance displacement control module 280 can be controlled by using a modulator (hereinafter, referred to as Fig.15a and Fig.15b The modulator 284 described above) and a driver for driving the modulator (hereinafter, referred to below) Fig.13 The driver 283 described above moves the second magnetic material portion 282 toward the first magnetic material portion 281 to reduce the gap between the first magnetic material portion 282 and the second magnetic material portion 282. In this case, as Fig.10 As shown, the direction in which the second magnetic substance portion 282 moves may be at least partially parallel to the direction of magnetic field lines formed around the coil according to Ampere's right-hand screw rule.

[0083] According to an embodiment, Fig.10 As shown, the first magnetic substance portion 281 may be fixedly connected to at least a portion of at least one coil, and the second magnetic substance portion 282 may be connected to the modulator. In addition, the second magnetic substance portion 282 moves back and forth in one direction around at least one coil 221 by the operation of the driver and the modulator, thereby causing a change in impedance. According to another embodiment, the first magnetic substance portion 281 may be connected to the modulator, and the second magnetic substance portion 282 may be fixedly connected to at least a portion of at least one coil.

[0084] Fig.11is a graph illustrating a change in impedance in a coil included in a resonator according to a change in a vertical width of a magnetic substance according to an embodiment. Fig.12 It is shown Fig.11 An enlarged graph of a local interval of the graph. Fig.11 and Fig.12 An example can be shown when Fig. 9 and Fig.10 The simulation results when the second magnetic substance 282 moves in one direction in the embodiment shown are shown.

[0085] Fig.11 It can be shown that when the coil size is 14 cm wide×14 cm long and the ferrite permeability is 150, the impedance of the coil 221 included in the resonator 220 changes ΔnH according to the movement of the magnetic substance 220 in a state where the vertical width of the magnetic substance (e.g., the second magnetic substance 282) formed of ferrite is 15 mm, 25 mm, 35 mm, 45 mm, and 55 mm. In the drawings, the horizontal axis can represent the displacement of a driver (e.g., a stepping motor, P_motor). Fig.11 The graph shown in can show the impedance change value when the magnetic substance moves 10 mm from -10 mm to 0 mm through the modulator. Fig.12 It is shown in Fig.11 A graph showing the impedance change according to the movement of a magnetic material (e.g., the second magnetic material 282) in a local interval of the curve graph (e.g., the interval from -3mm to 0mm) when the vertical width of the magnetic material is 15mm and 55mm.

[0086] Reference together Fig.11 and Fig.12 For example, if a magnetic substance having a vertical width of 55 mm moves 10 mm through the modulator, it can be recognized that the impedance of the coil 221 increases from about 180 nH to about 240 nH. If the impedance of the coil 221 changes from about 180 nH to about 240 nH, the resonant frequency for power transmission can be reduced by about 150 kHz. It can be recognized that by referring to the above reference Figure 3 The described increase in the resonant frequency of the approaching electronic device is used to offset this, and even in the case where the magnetic substance (e.g., the second magnetic substance 282) moves a small distance, an impedance change that can compensate for the influence caused by the approaching electronic device can be caused.

[0087] Fig.13 is a conceptual view illustrating a wireless power transmission device including a resonator and a magnetic substance displacement control module according to an embodiment.

[0088] Fig.13Another embodiment of a wireless power transmission device 200 including a resonator 220 and a magnetic material displacement control module 280 is shown. The power transmission unit 201 of the present disclosure may include only the resonator 220, wherein the resonator 220 includes at least one capacitor 222 and at least one coil 221. In this case, the at least one coil 221 and the at least one capacitor 222 may be applied differently. For example, Fig.13 As shown, at least one coil 221 may have a form of stacking a plurality of conductor films, and the first magnetic substance portion 281 and the second magnetic substance portion 282 included in the magnetic substance displacement control module 280 may have a form of surrounding the at least one coil 221 .

[0089] The driver 283 included in the magnetic material displacement control module 280 may be a driver having various types and driving methods, such as a stepper motor or a linear actuator. For example, when a stepper motor is used as the driver 283, the driver 283 may cause a change in impedance around the at least one coil 221 by moving the second magnetic material portion 282 by a predetermined length of travel (e.g., 30 mm).

[0090] According to the embodiment, as the magnetic material displacement control module, multiple magnetic material displacement control modules can be applied. For example, Fig.13 The wireless power transmission device 200 in which two magnetic substance displacement control modules 280 and 280' are applied is shown. When a plurality of magnetic substance displacement control modules are applied as described above, even when a driver 283 having a smaller stroke than when only one magnetic substance displacement control module is used, a target impedance change can be achieved around at least one coil. In addition, by shortening the movement displacement of the magnetic substance, the speed of the impedance change can be faster.

[0091] Fig.14 A wireless power transmission device according to an embodiment is shown.

[0092] Reference Fig.14 , the wireless power transmission device 200 (eg, Figures 1a to 2a The wireless power transmission device 100 may include a base housing 210 and a resonator 220 .

[0093] Regarding the base housing 210 and the resonator 220, the same as Figure 3 The components of the embodiment are the same as those described above. Fig.14 In the embodiment shown, the resonator 220 may be arranged tilted at a predetermined angle by being supported from one side of the base housing 210. According to an embodiment, an electronic device (eg, Figure 3The electronic device 250 may be mounted on the resonator 220 arranged to be inclined at a predetermined angle relative to the base case 210. However, the present disclosure is not necessarily limited thereto, and the resonator 220 may be arranged vertically or horizontally relative to the ground while being supported from one side of the base case 210.

[0094] At least one coil 221 is arranged in the resonator 220. According to an embodiment, in the at least one coil 221, a single coil may be wound into multiple turns to form a multi-layer structure. Alternatively, the at least one coil 221 may be provided with a plurality of coils, each of which is wound into one turn and stacked to form a multi-layer structure. The at least one coil 221 may include a first coil 221a arranged in the first part of the resonator 220 and a second coil 221b arranged in the second part of the resonator 220. The first part of the resonator 220 may be a part that is not surrounded by the magnetic substance displacement control module 280, and the second part of the resonator 220 may be a part surrounded by the magnetic substance displacement control module 280. According to an embodiment, the first coil 221a arranged in the first part of the resonator 220 and the second coil 221b arranged in the second part of the resonator 220 may have the same cross-sectional shape. Alternatively, the first coil 221a arranged in the first part of the resonator 220 and the second coil 221b arranged in the second part of the resonator 220 may have different cross-sectional shapes.

[0095] Fig.15a is a diagram illustrating a magnetic substance displacement control module according to an embodiment. Fig.15b is a diagram illustrating a magnetic substance displacement control module according to an embodiment. Fig.15a and Fig.15b A cross section of the second coil 221 b arranged in the second portion of the resonator 220 surrounded by the magnetic substance displacement control module is shown.

[0096] Reference together Fig.15a and Fig.15b , the first magnetic substance portion 281, the second magnetic substance portion 282, the driver 283, and the modulator 284 included in the magnetic substance displacement control module 280 are not limited to the shapes shown in the above-mentioned embodiments, but may have various shapes according to the embodiments. The magnetic substance displacement control module 280 may include the first magnetic substance portion 281 and the second magnetic substance portion 282 surrounding the second coil 221b, and may include a modulator 284 coupled to one side of the second magnetic substance portion 282. The modulator 284 may be moved in a direction parallel to the ground (e.g., the Y-axis direction) by receiving power from the driver 283, and the second magnetic substance portion 282 surrounding the second coil 221b may be moved by the movement of the modulator 284.

[0097] like Fig.15a As shown, a modulator that provides a support inclined at a predetermined angle relative to the ground (a surface parallel to a surface including the X-axis and the Y-axis) may be applied as the modulator 284, or as shown in Fig.15b As shown, a modulator providing an upright support perpendicular to the ground may be employed.

[0098] Fig.15a and Fig.15b The second coil 221 b shown in FIG. 2 may be a coil arranged in a second portion of the resonator 220 surrounded by the magnetic substance displacement control module 280 .

[0099] Refer to Fig.14 and Fig.15a In the second coil 221b according to the embodiment, the portion (second portion) surrounded by the magnetic material displacement control module 280 may also be arranged to be inclined relative to the ground, corresponding to the resonator 220 being inclined relative to the ground as a whole at a predetermined angle. In this case, in the second coil 221b, a plurality of coils may be stacked in a state of being inclined relative to the ground, or a coil wound several times may be arranged to be inclined relative to the ground. Fig.15a In the illustrated embodiment, the second coil 221 b may have the same cross-sectional shape as the first coil 221 a disposed in another portion (first portion) of the resonator 220 .

[0100] Optionally, refer to Fig.14 and Fig.15b , the second coil 221b according to the embodiment may have a shape that does not correspond to the shape of the resonator 220 tilted at a predetermined angle relative to the ground. For example, in the second coil 221b, a plurality of coils may be stacked in parallel with the ground, or one coil wound several times may be arranged in parallel with the ground. According to an embodiment, the second coil 221b may have a cross-sectional shape different from the cross-sectional shape of the first coil 221a arranged in another part (first part) of the resonator 220. The first coil 221a may be tilted at a predetermined angle relative to the ground, and the second coil 221b may be arranged parallel to the ground. As described above, the wireless power transmission device 200 of the present disclosure may form the cross-sectional shape of the second coil 221b (hereinafter, referred to as "target coil 221b") surrounded by the magnetic substance displacement control module 280 to be different from the cross-sectional shape of the first coil 221a arranged in another part (first part) of the resonator 220.

[0101] According to an embodiment, one surface of the target coil 221b may face one surface of the first magnetic substance portion 281 of the magnetic substance control module 280, and the other remaining surface of the target coil 221b may be formed to be covered by the second magnetic substance portion 282 having a "U" shape. Fig.15a In the illustrated embodiment, not only one surface of the target coil 221b faces one surface 281a of the first magnetic substance portion 281, but also the other surface of the target coil 221b is surrounded by the first magnetic substance portion 281 to face the other surface 281b and / or 281c of the first magnetic substance portion 281. In this case, both surfaces 282a and 282b of the second magnetic substance portion 282 may face the target coil 221.

[0102] In contrast, Fig.15b In the illustrated embodiment, one surface of the target coil 221b faces one surface 281a of the first magnetic substance portion 281, and the other surface of the target coil 221b is surrounded by surfaces 282a, 282b, and 282c of the second magnetic substance portion 282. Even if the resonator 220 is arranged in a shape inclined relative to the ground as a whole, if the arrangement of the target coil 221b and the magnetic substance control module 280 is formed as follows Fig.15b As shown, Fig.15a Compared with the example shown in FIG. 2 , the impedance change can be more effectively compensated. If the target coil 221b is arranged in parallel with the ground, when the inductance of the coil 221 is adjusted by controlling the displacement of the magnetic material using the magnetic material displacement control module 280, the area around the coil 221 of the second magnetic material portion 282 moving relative to the ground can be increased, thereby increasing the amount of inductance change according to the position of the magnetic material (e.g., ferrite), and thus providing a greater amount of impedance compensation. If the impedance compensation amount is fixed, then compared with the amount of impedance compensation according to ... Fig.15a Compared with the arrangement of the target coil 221b and the magnetic substance control module 280 of the embodiment shown in Fig.15b The arrangement of the target coil 221 b and the magnetic substance control module 280 of the embodiment shown in FIG. 2 may be advantageous for reducing the size. Fig.16 is a block diagram showing a resonator and a magnetic material displacement control module according to an embodiment. In describing the following embodiments of the present disclosure, the same or similar reference numerals are given to components that can be easily understood from the above embodiments, or no reference numerals are given. As long as it is repeated with the above description, its detailed description is not given below.

[0103] Reference Fig.16 The wireless power transmission device 200 may include a power transmission unit 201, wherein the power transmission unit 201 includes a power amplifier 271 (eg, Figure 2b power amplifier 171), matching circuit 272 (for example, Figure 2b The matching circuit 172) and the transmission resonance circuit 273 (for example, Figure 2bThe transmission resonant circuit 273 may include at least one coil and at least one capacitor. If AC power or current is applied to the transmission resonant circuit 273, a magnetic field whose size varies with time may be formed from the transmission resonant circuit 273, and thus, power in the form of an electromagnetic field may be output or transmitted to a power receiving circuit, for example, a power receiving circuit of the electronic device 250. Figure 2a The power receiving circuit 159 of the wireless power transmission device 200. In addition, the wireless power transmission device 200 may include at least one sensor 274 and a processor 275. The wireless power transmission device 200 may measure the output impedance of the power amplifier 271 described below and / or the input impedance of the transmission resonance circuit 273 (for example, the impedance of the signal input from the matching circuit 272 to the transmission resonance circuit 273) through at least one sensor 274. The transmission resonance circuit 273 may be implemented as a combination of at least one coil and at least one capacitor included in the resonator 220. When the electronic device 250 moves around the wireless power transmission device 200, the at least one sensor 274 may measure the change in the impedance of the resonator 220. The result value obtained by measuring the impedance change may be input to the processor 275, and the processor 275 may control the magnetic substance displacement control module 280 or 280' to perform an operation for compensating for the impedance change. In the embodiment shown in FIG. 15, the power amplifier 271, the matching circuit 272, the at least one sensor 274 and the processor 275 may be arranged in the base housing 210. 15 shows that the resonator 220 is also included in the base case 210 , but is not necessarily limited thereto. For example, the resonator 220 constituting the transmission resonance circuit 273 may be formed as a component physically separated and / or isolated from the base case 210 .

[0104] According to an embodiment of the present disclosure, the power transmission unit 201 may perform communication 262 with the magnetic substance displacement control module 280 or 280'. For example, the power transmission unit 201 may perform communication with the magnetic substance displacement control module 280 or 280' according to an in-band scheme or an out-of-band scheme. FIG15 shows an embodiment in which the power transmission unit 201 performs communication with the magnetic substance displacement control module 280 or 280' through an out-of-band short-range communication module (e.g., a Bluetooth Low Energy (BLE) short-range communication module), but is not necessarily limited thereto. The magnetic substance displacement control module 280 or 280' may include a processor 285 (e.g., a micro control unit (MCU)), and the displacement amount of the magnetic substance displacement modulator 284 may be controlled through the processor 285 based on the impedance data of the resonator 220 provided from the power transmission unit 201. The magnetic substance displacement modulator 284 may perform an operation 263 for changing the impedance of the resonator 220 by adjusting a gap between the first magnetic substance portion 281 and the second magnetic substance portion 292 through the driver 283 driven based on a command received from the processor 285 .

[0105] refer to Fig.16 , the magnetic substance displacement control module 280 or 280' may further include a wireless power receiver 286. The magnetic substance displacement control module 280 or 280' may be provided as a component independently, individually and / or physically separated from the power transmitter 201 through the wireless power receiver 286 to be able to change the inductance of the power transmitter 201.

[0106] Fig.17 is a perspective view showing a wireless power transmission apparatus according to another embodiment. Fig.18 is a diagram illustrating an aspect of use of a magnetic substance displacement control module in a state where a first resonator and a second resonator are separated according to an embodiment.

[0107] Fig.17 The wireless power transmission device 300 including a detachable resonator may be illustrated. The detachable resonator may refer to a resonator that can be used in a state where the resonators 320 and 330 are removed from the base case 310.

[0108] The wireless power transmission device 300 may include resonators 320 and 330. The resonators 320 and 330 may include a first resonator 320 including at least one coil and at least one capacitor and a second resonator 330 including at least one coil and at least one capacitor. The second resonator 330 may be physically separated from the first resonator 320.

[0109] The base shell 310 may form a structure capable of installing the first resonator 320 and the second resonator 330. Here, the first resonator 320 may be arranged to be placed in the base shell 310 in the horizontal direction, and the second resonator 330 may be arranged to be placed in the base shell 310 in the vertical direction. For example, the first resonator 320 may be coupled to the cylindrical outer circumferential edge of the base shell 310 while being put down, and the second resonator 330 may be coupled to the groove 312 formed in the central portion of the upper surface 311 of the base shell 310 and stand upright. According to an embodiment, the first resonator 320 and the second resonator 330 may be formed to be compatible with each other, and thus may be arranged to cross each other. For example, in the base shell 310, the second resonator 330 may be installed on the base shell 310 at the position where the first resonator 320 is installed, and the first resonator 320 may be installed at the position where the second resonator 330 is installed. Hereinafter, for the sake of convenience of description, an embodiment in which the first resonator 320 is horizontally installed relative to the base shell 310 (or relative to the ground) and the second resonator 330 is vertically installed relative to the base shell 310 (or relative to the ground) is mainly described, but it should be noted that the present disclosure is not limited thereto.

[0110] According to an embodiment, the first resonator 320 installed horizontally relative to the base housing 310 may be mainly coupled to an electronic device placed on the ground near the wireless power transmission device 300 to transmit wireless power. In addition, the second resonator 330 installed vertically to the base housing 310 may be mainly coupled to an electronic device erected near the wireless power transmission device 300 or arranged to be spaced apart from the ground by a predetermined distance in the height direction of the wireless power transmission device 300 to transmit wireless power. However, the present disclosure is not necessarily limited thereto, and according to an embodiment, power may be wirelessly transmitted to an electronic device erected near the wireless power transmission device 300 or arranged to be spaced apart from the ground by a predetermined distance using the first resonator 320, and wireless power may be transmitted to an electronic device placed on the ground using the second resonator 330. However, in terms of transmission efficiency, it may be more advantageous to charge an electronic device placed on the ground using the first resonator 320 and to charge an electronic device erected or arranged to be spaced apart from the ground by a predetermined distance using the second resonator 330.

[0111] according to Fig.17 In the illustrated embodiment, the first resonator 320 may be formed such that the entire portion (e.g., the circumferential portion) of the first resonator 320 is exposed to the outside of the base shell 310, but the second resonator 330 may be formed such that at least a portion thereof is inserted into the base shell 310 and the remaining portion thereof is exposed to the outside. Since at least a portion of the second resonator 330 is inserted into the base shell 310, the second resonator 330 may be stably mounted. However, the arrangement and / or shape associated with the base shell 310, the first resonator 320, and the second resonator 330 are not limited thereto, but may be various.

[0112] The first resonator 320 and / or the second resonator 330 may be detachably coupled to the base case 310. According to an embodiment, any one of the first resonator 320 or the second resonator 330 may be spaced apart from the base case 310 of the wireless power transmission device 300 by a predetermined distance, and the spaced-apart resonators may be used as a repeater to extend the wireless power charging range of the wireless power transmission device 300.

[0113] Return to reference Fig.17 , the wireless power transmission device 300 may include a feeding unit 340. According to an embodiment, the feeding unit 340 may be disposed in the base housing 310.

[0114] The feeding unit 340 may be electromagnetically coupled with the resonators 320 and 330, and the resonators 320 and 330 receiving power through coupling with the feeding unit 340 may output or transmit power to the electronic device 350 in the form of an electromagnetic field. For example, the feeding unit 340 may be arranged on one side of the base housing 310 to generate an electromagnetic field, and the generated electromagnetic field may be coupled to the first resonator 320 and / or the second resonator 330 simultaneously or selectively. The feeding unit 340 may be configured as a direct / parallel connection between a coil forming a loop including at least one turn and a capacitor. According to an embodiment, the feeding unit 340 may be arranged in the base housing 310, and at least a portion of the feeding unit 340 may be exposed to the outside of the base housing 310. According to an embodiment, the feeding unit 340 may be arranged at various angles at which the resonators 320 and 330 may be coupled, and according to an embodiment, a plurality of feeding units 340 may be provided.

[0115] Reference Fig.18 , by utilizing the fact that the resonators 320 and 330 can be separated from the base case 310, any one resonator (eg, the second resonator 330) can be used as a repeater for relaying wireless power transmission.

[0116] According to an embodiment, when the first resonator 320 is mounted on the base housing 310, the second resonator 330 may be placed in a space around the first resonator 320. In this case, the second resonator 330 may be arranged in a direction horizontal to the ground (e.g., Fig.18 ) or inclined at a predetermined angle relative to the ground (e.g., Fig. 9 In this arrangement state, the wireless power transmission device 300 can implement a wireless power charging operation of the electronic device 350 in a manner that the first resonator 320 is coupled to the second resonator 330 and the second resonator 330 is coupled to the electronic device 350. In this case, the second resonator 330 can be coupled to the first resonator 320 to extend the wireless power charging range of the wireless power transmission device 300 as a repeater.

[0117] and Fig.17 and Fig.18In contrast to the role of the second resonator 330 in the embodiment of relaying power transmission, the first resonator 320 is coupled to the base housing 310 to control the overall wireless charging operation. Therefore, the first resonator 320 and the base housing 310 may be collectively referred to as a power transmission unit 301. The first resonator 320 may be coupled to an electronic device placed on the floor near the wireless power transmission device 300 to transmit wireless power. In this case, the effective distance of wireless power transmission performed by the first resonator 320 of the wireless power transmission device 300 may be limited to a first effective distance A. According to various embodiments, the second resonator 330 may be arranged at a position spaced apart from the first resonator 320 by a predetermined distance, thereby increasing the effective distance for wireless power transmission by the second resonator 330 by a second effective distance B. For example, due to Fig.18 The electronic device 350 shown in FIG. 3 is located outside the first effective distance A of the first resonator 320 but within the second effective distance B of the second resonator 330 , and thus can receive power from the wireless power transmission device 300 .

[0118] Although not shown, even when the second resonator 330 is installed perpendicular to the wireless power transmission device 300 and the first resonator 320 is arranged at a position spaced apart from the wireless power transmission device 300 by a predetermined distance, an effective distance for wireless power transmission may be increased.

[0119] According to various embodiments of the present disclosure, the wireless power transmission device 300 may include a base housing 310 and a detachable resonator (e.g., a first resonator 320 and / or a second resonator 330) that is separable from the base housing 310. Depending on the wireless charging environment desired by the user, the detachable resonator (e.g., the first resonator 320 and / or the second resonator 330) may be coupled to the base housing 310 or arranged at any position other than the base housing 310 to perform a wireless power charging function. In addition, the effective distance of wireless power transmission may be extended using an appropriate arrangement of the detachable resonator (e.g., the first resonator 320 and / or the second resonator 330).

[0120] As referenced above Figure 3 As described above, when the electronic device 250 approaches the resonator 220 coupled to the base housing 210, the impedance of the resonator 220 may change, but as shown in FIG. Fig.18As shown, when the electronic device 350 approaches a resonator (e.g., a second resonator 330) that is not coupled to the base shell 310, the impedance of the resonator (e.g., the second resonator 330) may also change. For example, when the electronic device 350 moves around the second resonator 330, the impedance of the second resonator 330 coupled to the first resonator 320 may change according to the movement of the electronic device 350. The first resonator 320 may include at least one sensor 374 (e.g., an impedance sensor) for sensing such impedance changes. According to an embodiment, although not shown in the drawings, the second resonator 330 may also separately include at least one sensor 374 or a power amplifier 371 for sensing impedance changes. In order to compensate for impedance changes, the wireless power transmission device 300 according to an embodiment of the present disclosure may also include a magnetic material displacement control module 380. In the following, reference is made to Fig.19 and Fig. 20 The embodiments describe in detail the configurations of a power transmission circuit and a power reception circuit for compensating for impedance variation.

[0121] Fig.19 It shows that according to Fig.17 A block diagram of a wireless power transmission device and a magnetic material displacement control module of an embodiment. Fig. 20 It shows that according to Fig.17 Detailed block diagram of a power transmission circuit and a power receiving circuit of an embodiment.

[0122] Refer to Fig.19 and Fig. 20 The wireless power transmission device 300 may include a power transmission unit 301, and the power transmission unit 301 includes a power amplifier 171 (eg, Figure 2b power amplifier 171), matching circuit 372 (for example, Figure 2b The matching circuit 172) and the first transmission resonant circuit 373 (for example, Figure 2b The first transmission resonant circuit 373 may be implemented as a first resonator 320 including at least one coil and at least one capacitor. The wireless power transmission device 300 may further include a second transmission resonant circuit 376. The second transmission resonant circuit 376 may also be implemented as a second resonator 330 including at least one coil and at least one capacitor. If AC power (or current) is applied to the first transmission resonant circuit 373, a magnetic field whose magnitude varies with time may be formed from the first transmission resonant circuit 373, the second transmission resonant circuit 376 may be coupled, and power in the form of an electromagnetic field may be transmitted to a power receiving circuit (e.g., a power receiving circuit) of the electronic device 350 through a magnetic field whose magnitude varies with time around the second transmission resonant circuit 376. Figure 2apower receiving circuit 159). In addition, the wireless power transmission device 300 may include at least one sensor 374 and a processor 375. The wireless power transmission device 300 may measure the output impedance of the power amplifier 371 described below and / or the input impedance of the first transmission resonant circuit 373 (for example, the impedance of the signal input from the matching circuit 372 to the first transmission resonant circuit 373) through at least one sensor 374. When the electronic device 350 moves around the wireless power transmission device 300, the at least one sensor 374 may measure the impedance change of the first resonator 320. The result value may be input to the processor 375, and the processor 375 may allow the magnetic substance displacement control module 380 or 380' to perform an operation of compensating for the impedance change. Fig.19 In the illustrated embodiment, a power amplifier 371 , a matching circuit 372 , at least one sensor 374 , and a processor 375 may be disposed in the base housing 310 . Fig.19 The first resonator 320 is shown to be also included in the base housing 310, but it is not necessarily limited thereto. For example, the first resonator 320 constituting the first transmission resonance circuit 373 may be formed as a component physically distinguished and / or separated from the base housing 310. In addition, although Fig.19 The power amplifier 371 and the at least one sensor 374 are shown to be disposed in the base housing 310 , but the first resonator 320 and the resonator (eg, the second resonator 330 ) separable from the base housing 310 may also separately include at least one sensor and an amplifier for measuring impedance changes.

[0123] The power transmission unit 301 according to an embodiment of the present disclosure may perform communication 362 with the magnetic substance displacement control module 380 or 380'. For example, the wireless power transmission device 300 may communicate with the magnetic substance displacement control module 380 or 380' according to an in-band scheme or an out-of-band scheme. Fig.18 An embodiment in which the power transmission unit 301 performs communication with the magnetic substance displacement control module 380 or 380' through an out-of-band short-range communication module (e.g., a Bluetooth Low Energy (BLE) short-range communication module) is shown, but it is not necessarily limited thereto. The magnetic substance displacement control module 380 or 380' may include a processor 385 (e.g., a micro control unit (MCU)), and may control the displacement amount of the magnetic substance displacement modulator 384 through the processor 385 based on the impedance data provided from the power transmission unit 301. The magnetic substance displacement modulator 384 may perform an operation 363 for changing the impedance of the second resonator 330 by adjusting the gap between the first magnetic substance portion 381 and the second magnetic substance portion 382 through a driver 383 driven based on a command received from the processor 385.

[0124] refer to Fig.19The magnetic substance displacement control module 380 or 380 ′ may further include a wireless power receiver 386 .

[0125] To summarize the above description, the present disclosure can provide a wireless power transmission device 200 or 300 capable of compensating for impedance variation by including a magnetic substance displacement control module 280 or 380. In this case, the magnetic substance displacement control module 280 or 380 can be provided as a component that is independently, individually and / or physically separated from the power transmission unit 201 or 301 of the wireless power transmission device 200 or 300 to be able to change the inductance of the power transmitter 201.

[0126] The electronic device according to various embodiments of the present disclosure may be various types of devices. The electronic device may include, for example, a portable communication device (e.g., a smart phone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a household appliance. According to an embodiment of the present invention, the electronic device is not limited to the embodiments listed above.

[0127] It should be understood that the various embodiments of the present disclosure and the terms used therein are not intended to limit the technical features set forth herein to specific embodiments, and include various changes, equivalents or replacements of the corresponding embodiments. With regard to the description of the accompanying drawings, similar reference numerals may be used to refer to similar or related elements. It should be understood that, unless otherwise clearly stated in the relevant context, the singular form of the noun corresponding to the project may include one or more things. In the present disclosure, each of the phrases such as "A or B", "at least one of A and B", "at least one of A or B", "A, B or C", "at least one of A, B and C", and "at least one of A, B or C" may include all possible combinations of the items listed together in the corresponding one of the multiple phrases. As used herein, terms such as "1st" and "2nd" or "first" and "second" may be used to simply distinguish the corresponding component from another component, and do not limit the component in other aspects (e.g., importance or order). It should be understood that if an element (e.g., a first element) is referred to as being “coupled with another element (e.g., a second element)”, “coupled to” another element (e.g., the second element), “connected with” or “connected to” another element (e.g., the second element), with or without the term “operably” or “communicatively”, it means that the element can be coupled to the other element directly (e.g., by wire), wirelessly, or via a third element.

[0128] In the present disclosure, the term "module" may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with other terms such as "logic", "logic block", "portion", or "circuit". A module may be a single integrated component, or a minimum unit or part thereof, suitable for performing one or more functions. For example, according to an embodiment, a module may be implemented in the form of an application specific integrated circuit (ASIC).

[0129] The various embodiments described herein may be implemented as software (e.g., program 140) including one or more instructions stored in a storage medium (e.g., internal memory 136 or external memory 138) readable by a machine (e.g., electronic device 101). For example, a processor (e.g., processor 120) of a machine (e.g., electronic device 101) may call at least one of the one or more instructions stored in the storage medium and execute it under the control of the processor with or without one or more other components. This allows the machine to be operated to perform at least one function according to at least one instruction called. One or more instructions may include code generated by a compiler or code executable by an interpreter. The machine-readable storage medium may be provided in the form of a non-transitory storage medium. Among them, the term "non-transitory" only means that the storage medium is a tangible device and does not include signals (e.g., electromagnetic waves), but the term does not distinguish between semi-permanent storage of data in the storage medium and temporary storage of data in the storage medium.

[0130] According to an embodiment, the method according to various embodiments of the present disclosure may be included and provided in a computer program product. The computer program product may be traded between a seller and a buyer as a commodity. The computer program product may be distributed in the form of a machine-readable storage medium (e.g., a compact disk read-only memory (CD-ROM)), or via an application store (e.g., Play Store TM ) online distribution (e.g., download or upload), or directly between two user devices (e.g., smart phones). If distributed online, at least a portion of the computer program product may be temporarily generated or at least temporarily stored in a machine-readable storage medium (e.g., a memory of a manufacturer's server, an application store's server, or a relay server).

[0131] According to various embodiments, each component (e.g., module or program) in the above-mentioned components may include a single entity or multiple entities. According to various embodiments, one or more of the above-mentioned components may be omitted, or one or more other components may be added. Alternatively or additionally, multiple components (e.g., modules or programs) may be integrated into a single component. In this case, according to various embodiments, the integrated component may still perform one or more functions of each component in the multiple components in the same or similar manner as performed by the corresponding components in the multiple components before integration. According to various embodiments, the operations performed by a module, a program or another component may be performed sequentially, in parallel, repeatedly or heuristically, or one or more operations may be performed in a different order or omitted, or one or more other operations may be added.

[0132] According to an embodiment of the present disclosure, a wireless power transmission device (eg, Fig.13 The wireless power transmission device 200 includes a resonator and a magnetic material displacement control module, wherein the resonator (eg, Fig.13 The resonator 220) includes at least one coil (e.g., Fig.13 at least one coil 221) and at least one capacitor (e.g., Fig.13 at least one capacitor 222), wherein the magnetic material displacement control module (eg, Fig.13 The magnetic material displacement control module 280 includes a first magnetic material portion (eg, Fig.13 The first magnetic substance portion 281 and the second magnetic substance portion (eg, Fig.13 a second magnetic substance portion 282), a modulator (e.g., a modulator configured to adjust the gap between the first magnetic substance portion and the second magnetic substance portion) Fig.15a and 15b A modulator 284) and a driver configured to drive the modulator (eg, Fig.13 A driver 283), and wherein the first magnetic substance portion and the second magnetic substance portion of the magnetic substance displacement control module are arranged to surround at least a portion of the at least one coil.

[0133] According to an embodiment, the wireless power transmission device may further include a base housing (eg, Fig.14 base housing 210).

[0134] According to an embodiment, the wireless power transmission device may further include a power amplifier (eg, Fig.16 power amplifier 271), a matching circuit (e.g., Fig.16 The matching circuit 272) and the transmission resonant circuit (eg, Fig.16transmission resonant circuit 273).

[0135] According to an embodiment, the wireless power transmission device may further include at least one sensor (eg, Fig.16 At least one sensor 274) is configured to measure the output impedance of the power amplifier and / or the input impedance of the transmission resonant circuit.

[0136] According to an embodiment, the resonator may be a ring resonator having a hollow portion formed therein.

[0137] According to an embodiment, in the magnetic substance displacement control module, the first magnetic substance portion may be fixedly connected to at least a portion of the at least one coil, and the second magnetic substance portion may be connected to the modulator.

[0138] According to an embodiment, the resonator may include a first resonator (eg, Fig.17 and Fig.18 The first resonator 320 and the second resonator (eg, Fig.17 and Fig.18 The first resonator includes at least one coil and at least one capacitor, and the second resonator includes at least one coil and at least one capacitor.

[0139] According to an embodiment, the second resonator may be configured to be coupled in a state of being spaced apart from the first resonator to transfer power.

[0140] According to an embodiment, the first resonator may further include a base case supporting the first resonator, and the second resonator may be detachably provided from the base case.

[0141] According to an embodiment, the wireless power transmission device may include a plurality of magnetic substance displacement control modules (eg, Fig.13 Magnetic material displacement control modules 280 and 280').

[0142] According to an embodiment, the magnetic substance displacement control module can be configured to adjust the gap by moving the first magnetic substance portion relative to the second magnetic substance portion or the second magnetic substance portion relative to the first magnetic substance portion in a direction at least partially parallel to the direction of magnetic lines of force formed around at least one coil.

[0143] According to an embodiment, the coil portion (eg, Fig.14 The second coil 221b) may have a coil portion (eg, Fig.14 The first coil 221a) has a different cross-sectional shape.

[0144] According to an embodiment, at least one of the first magnetic substance portion and the second magnetic substance portion may have a 'U' shape.

[0145] According to an embodiment, the magnetic substance displacement control module may be provided to be detachable from the resonator.

[0146] According to an embodiment, the magnetic substance displacement control module may further include a short-range communication module and a processor (eg, Fig.16 A processor 285 may be provided, and the processor may be configured to control the displacement amount of the magnetic substance displacement modulator based on the impedance data of the resonator.

[0147] According to an embodiment of the present disclosure, a resonator (eg, Fig.13 The magnetic material displacement control module (eg, Fig.13 The magnetic material displacement control module 280 includes a first magnetic material portion (eg, Fig.13 A first magnetic substance portion 281 of the embodiment of the present invention), a second magnetic substance portion (eg, Fig.13 The second magnetic material portion 282), a modulator (eg, Fig.15a and 15b modulator 284) and a driver (e.g., Fig.13 A driver 283), wherein the modulator is configured to adjust the gap between the first magnetic material portion and the second magnetic material portion, and the driver is configured to drive the modulator.

[0148] According to an embodiment, the first magnetic substance portion and the second magnetic substance portion may include a ferrite material.

[0149] According to an embodiment, at least one of the first magnetic substance portion and the second magnetic substance portion may have a 'U' shape.

[0150] According to an embodiment, the magnetic substance displacement control module may be provided to be detachable from the resonator.

[0151] According to an embodiment, the magnetic substance displacement control module may further include a short-range communication module and a processor (eg, Fig.16 A processor 285 may be provided, and the processor may be configured to control the displacement amount of the magnetic substance displacement modulator based on the impedance data of the resonator.

[0152] While the present disclosure has been shown and described with reference to exemplary embodiments thereof, it will be apparent to those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present disclosure as defined by the following claims.

Claims

1. A wireless power transmission device, comprising a resonator and a magnetic material displacement control module, in, The resonator comprises at least one coil and at least one capacitor, The magnetic material displacement control module includes a first magnetic material part and a second magnetic material part, a modulator and a driver, wherein the modulator is configured to adjust the gap between the first magnetic material part and the second magnetic material part, and the driver is configured to drive the modulator. Wherein, the first magnetic material portion and the second magnetic material portion of the magnetic material displacement control module are arranged to surround at least a portion of the at least one coil.

2. The wireless power transmission device according to claim 1, further comprising: A base housing supports at least a portion of the resonator.

3. The wireless power transmission device according to claim 1, further comprising: Power amplifier, matching circuit and transmission resonant circuit.

4. The wireless power transmission device according to claim 1, further comprising: At least one sensor is configured to measure an output impedance of the power amplifier and / or an input impedance of the transmission resonant circuit.

5. The wireless power transmission device according to claim 1, wherein: The resonator is a ring resonator having a hollow portion formed therein.

6. The wireless power transmission device according to claim 1, wherein: In the magnetic substance displacement control module, the first magnetic substance portion is fixedly connected to at least a portion of the at least one coil, and the second magnetic substance portion is connected to the modulator.

7. The wireless power transmission device according to claim 1, wherein: The resonator comprises: a first resonator including at least one coil and at least one capacitor; and The second resonator includes at least one coil and at least one capacitor.

8. The wireless power transmission device according to claim 7, wherein: The second resonator is configured to be coupled to transfer power in a state of being spaced apart from the first resonator.

9. The wireless power transmission device according to claim 7, wherein: The first resonator further includes a base case supporting the first resonator, and wherein the second resonator is detachably provided with the base case.

10. The wireless power transmission device according to claim 1, wherein: The magnetic substance displacement control module is configured to adjust the gap by moving the first magnetic substance portion relative to the second magnetic substance portion or the second magnetic substance portion relative to the first magnetic substance portion in a direction at least partially parallel to a direction of magnetic lines of force formed around the at least one coil.

11. The wireless power transmission device according to claim 1, wherein: At least one of the first magnetic substance portion and the second magnetic substance portion has a “U” shape.

12. The wireless power transmission device according to claim 1, wherein: The magnetic substance displacement control module is configured to be detachable from the resonator.

13. The wireless power transmission device according to claim 1, wherein: The magnetic substance displacement control module further includes a short-range communication module and a processor, wherein the processor is configured to control the displacement amount of the magnetic substance displacement modulator based on the impedance data of the resonator.

14. A magnetic material displacement control module for impedance change of a resonator, comprising: a first magnetic material portion; a second magnetic substance portion, capable of coupling to the first magnetic substance portion; a modulator configured to adjust a gap between the first magnetic substance portion and the second magnetic substance portion; as well as A driver is configured to drive the modulator.

15. The magnetic material displacement control module according to claim 14, wherein: The first magnetic substance portion and the second magnetic substance portion include a ferrite material.

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