KR20240030884A - Wireless power transmitting device - Google Patents

Abstract

A wireless power transmission device may be provided. The wireless power transmission device includes a housing including a front plate and a frame surrounding at least a portion of the front plate and including a border area including a plurality of valleys and a plurality of mountains, a transmitting coil disposed below the front plate, and the front surface. A magnetic material disposed below the plate and surrounding at least a portion of the transmission coil, may include a magnetic material spaced apart from the frame and a fan located below the magnetic material.

Description

Wireless power transmission device {WIRELESS POWER TRANSMITTING DEVICE}

This disclosure relates to a wireless power transmission device.

Wireless charging technology uses wireless power transmission and reception, and is a technology that can charge the battery of an electronic device (e.g., a mobile phone) without connecting a separate charging connector. Since there is no connector to connect to an external device, waterproofing function can be improved.

The wireless power transmission device is divided into an inductive coupling method based on the electromagnetic induction phenomenon generated by a wireless power signal and an electromagnetic resonance coupling method based on an electromagnetic resonance phenomenon generated by a wireless power signal of a specific frequency. Power can be transmitted to a wireless power receiving device using one or more.

An electronic device that supports wireless charging power reception can receive power from an external device through a coil and charge a battery using the input power. Electronic devices that support wireless charging power transmission can supply wireless power to other electronic devices using battery power or power input from a connected wired charger. For example, the wireless charging power transmitting device generates designated power using the power of an external device (e.g., TA adapter) or battery, and transmits the generated power to the other electronic device (e.g., smartphone, smart watch) through the coil. , or it can be supplied to wireless earphones (e.g. true wireless stereo).

According to one embodiment of the present disclosure, a wireless power transmission device includes a housing including an upper enclosure and a frame surrounding at least a portion of the upper enclosure and including a border area including a plurality of valleys and a plurality of peaks, below the upper enclosure. A transmission coil disposed in, a magnetic material disposed below the upper enclosure, and surrounding at least a portion of the transmission coil, may include a magnetic material spaced apart from the frame and a fan located below the magnetic material.

According to one embodiment of the present disclosure, a wireless power transmission device includes a housing including an upper enclosure and a frame surrounding at least a portion of the upper enclosure, a transmitting coil disposed below the upper enclosure, and surrounding at least a portion of the transmitting coil. , may include a magnetic material spaced apart from the transmitting coil and a fan disposed below the transmitting coil. The frame may include a border area including a plurality of mountains and a plurality of valleys. The fan may be configured to transmit air to the outside of the wireless power transmission device through a second empty space formed by the plurality of valleys and the plurality of mountains and a first empty space between the magnetic material and the housing.

Figure 1 shows a block diagram of a wireless power transmission device and a wireless power reception device according to an embodiment of the present disclosure.
Figure 2 is a block diagram of a wireless power transmission device and an electronic device receiving wireless power according to an induction method according to an embodiment of the present disclosure.
Figure 3 is a perspective view of a wireless power transmission device and an electronic device receiving wireless power according to an embodiment of the present disclosure.
Figure 4 is an exploded perspective view of a wireless power transmission device according to an embodiment of the present disclosure.
Figure 5 is an exploded perspective view of a wireless power transmission device according to an embodiment of the present disclosure.
6 is an exploded perspective view of a transmission assembly, according to one embodiment of the present disclosure.
Figure 7 is a cross-sectional view of the wireless power transmission device where the wireless power transmission device is located, according to an embodiment of the present disclosure.
Figure 8 is a cross-sectional view of the wireless power transmission device where the wireless power transmission device is located, according to an embodiment of the present disclosure.
9 is a top view of a frame, according to one embodiment of the present disclosure.
FIG. 10A is a top view of a wireless power transmission device including a magnetic material, a ferrite, and an upper enclosure, according to an embodiment of the present disclosure.
FIG. 10B is a diagram illustrating the airflow of a wireless power transmission device including a magnetic material, a ferrite, and an upper enclosure, according to an embodiment of the present disclosure.

Figure 1 shows a block diagram of a wireless power transmission device and a wireless power reception device according to an embodiment of the present disclosure.

Referring to FIG. 1, the wireless power transmission device 200 can wirelessly transmit power 106 to the wireless power reception device 101. The wireless power transmission device 200 may receive information 107 from the wireless power reception device 101. In one example, the wireless power transmission device 200 may transmit power 106 according to an induction method. When the wireless power transmission device 200 is inductive, the wireless power transmission device 200 may include, for example, a power source, a DC-DC conversion circuit (e.g., DC/DC converter), and a DC-AC conversion. It may include at least one of a circuit (eg, an inverter), an amplification circuit, an impedance matching circuit, at least one capacitor, at least one coil, or a communication modulation circuit. At least one capacitor may form a resonance circuit together with at least one coil. The wireless power transmission device 200 may be implemented in a manner defined in the Qi standard of the wireless power consortium (WPC). The wireless power transmission device 200 may include a coil that can generate an induced magnetic field when current flows according to an induction method. The process of the wireless power transmission device 200 generating an induced magnetic field can be expressed as the wireless power transmission device 200 transmitting power 106 wirelessly. In addition, in the coil of the wireless power receiving device 101, induced electromotive force (or current, voltage, and/or power) may be generated by a magnetic field generated in the surroundings. The process of generating induced electromotive force through the coil can be expressed as the wireless power receiving device 101 receiving power 106 wirelessly.

The wireless power transmission device 200 according to one embodiment may perform communication with the wireless power reception device 101. For example, the wireless power transmission device 200 may communicate with the wireless power reception device 101 according to an in-band method. The wireless power transmission device 200 may modulate data to be transmitted according to, for example, frequency shift keying (FSK) modulation, and the wireless power reception device 101 may perform amplitude shift keying (ASK) modulation. ) Information 107 can be provided by performing modulation according to the modulation method. The wireless power transmission device 200 may check the information 107 provided by the wireless power reception device 101 based on the amplitude of the current and/or voltage applied to the transmission coil. In FIG. 1, the wireless power receiving device 101 is shown as transmitting information 107 directly to the wireless power transmitting device 200, but this is only for easy understanding, and the wireless power receiving device 101 Those skilled in the art will understand that only controls the on/off of at least one internal switch. The operation of performing modulation based on the ASK modulation method and/or FSK modulation method can be understood as an operation of transmitting data (or packets) according to the in-band communication method, and can be understood as the operation of transmitting data (or packets) according to the ASK demodulation method and/or FSK demodulation method. The operation of performing demodulation based on a method can be understood as an operation of receiving data (or packets) according to an in-band communication method. Meanwhile, transmitting and receiving data according to an in-band communication method is simply an example, and the wireless power transmitting device 200 and the wireless power receiving device 101 use an out-of-band method (e.g., BLE (Bluetooth Those skilled in the art will understand that data can be transmitted and received based on low energy methods (or various short-range communication methods).

In this document, the wireless power transmission device 200 or the wireless power reception device 101 performing a specific operation refers to various hardware included in the wireless power transmission device 200 or the wireless power reception device 101, for example. For example, a controller such as a micro controlling unit (MCU), field programmable gate array (FPGA), application specific integrated circuit (ASIC), microprocessor, or application processor (AP) performs a specific operation. It can mean. Alternatively, the wireless power transmission device 200 or the wireless power reception device 101 performing a specific operation may mean that the controller controls other hardware to perform a specific operation. Alternatively, the wireless power transmission device 200 or the wireless power reception device 101 performing a specific operation may be stored in a storage circuit (e.g., memory) of the wireless power transmission device 200 or the wireless power reception device 101. As at least one instruction to perform a specific operation is executed, it may mean causing a controller or other hardware to perform a specific operation.

Figure 2 is a block diagram of a wireless power transmission device and an electronic device receiving wireless power according to an induction method according to an embodiment of the present disclosure.

The wireless power transmission device 200 according to an embodiment of the present disclosure may include at least one of a power transmission circuit 11, a control circuit 12, a communication circuit 13, or a sensing circuit 14. The electronic device 101 that wirelessly receives power may include at least one of a power reception circuit 21, a control circuit 22, a communication circuit 23, or an interface 24.

The power transmission circuit 11 according to an embodiment of the present disclosure may provide power to the electronic device 101. The power transmission circuit 11 may include a power adapter 11c, a power generation circuit 11b, a matching circuit 11a, a coil (or: conductive pattern) 11L, or a first communication circuit 13a. . The power transmission circuit 11 may be configured to wirelessly transmit power to the electronic device 101 through the coil 11L. The power transmission circuit 11 can receive power from the outside in the form of a direct current or alternating current waveform, and can supply the supplied power to the electronic device 101 in the form of an alternating current waveform. The coil 11L may include a plurality of coils and/or a coil wound multiple times.

The power adapter 11c can receive alternating current or direct current power from the outside, or receive a power signal from a built-in battery device and output direct current power with a set voltage value. According to one embodiment, the power adapter 11c may be electrically connected to an external power supply unit 11d. For example, the cable of the power supply unit 11d is directly connected to the power adapter 11c having a terminal. It can have any form. The voltage value of the direct current power output from the power adapter 11c can be controlled by the control circuit 12. Direct current power output from the power adapter 11c may be output to the power generation circuit 11b.

The power generation circuit 11b may convert the direct current output from the power adapter 11c into alternating current and output the converted current. The power generation circuit 11b may include a certain amplifier (not shown). If the direct current voltage or current input through the power adapter 11c is less than the set gain, it can be amplified to the set value using the amplifier. The power generation circuit 11b may include a circuit that converts direct current input from the power adapter 11c into alternating current based on a control signal input from the control circuit 12. The power generation circuit 11b may include a bridge circuit including a plurality of switches. The coil 11L may include a plurality of coils (or coils wound multiple times), and the plurality of coils (or coils wound multiple times) may share at least a portion of the power generation circuit 11b. This will be described in more detail later. For example, the power generation circuit 11b may convert the direct current to alternating current through a predetermined inverter. The power generation circuit 11b may include a gate driving device (not shown). The gate driving device may control the direct current by turning it on/off and change it to alternating current. Alternatively, the power generation circuit 11b may generate an AC power signal through a wireless power generator (eg, oscillator).

The matching circuit 11a may perform impedance matching. For example, when an alternating current signal output from the power generation circuit 11b is transmitted to the coil 11L, an electromagnetic field may be formed in the coil 11L by the alternating current signal. In one embodiment, an alternating current signal may be provided to only some of the plurality of coils (or coils wound multiple times), which will be described in more detail later. The frequency band of the formed electromagnetic field signal can be adjusted by adjusting the impedance of the matching circuit 11a. The matching circuit 11a can control the output power transmitted to the electronic device 101 through the coil 11L to have high efficiency or high output by adjusting the impedance. The matching circuit 11a can adjust the impedance based on the control of the control circuit 12. The matching circuit 11a may include at least one of an inductor (eg, a coil (or conductive pattern)), a capacitor, or a switch device. The control circuit 12 can control the connection state with at least one of the inductor or the capacitor through a switch device, and can perform impedance matching accordingly. At least one of the control circuit 12 or the control circuit 52 is capable of performing operations such as a general-purpose processor such as a CPU, a mini computer, a microprocessor, a micro controlling unit (MCU), or a field programmable gate array (FPGA). It can be implemented with various circuits, and there is no limit to its types.

When current is applied, the coil 11L may form a magnetic field for inducing or resonating current in the electronic device 101. The first communication circuit 13a (e.g., resonance circuit) can perform communication (e.g., data communication) in an in-band format using electromagnetic waves generated by the coil 11L. .

The sensing circuit 14 may measure changes in current/voltage applied to the coil 11L of the power transmission circuit 11 periodically or aperiodically. The wireless power transmission device 10 may change the amount of power to be transmitted according to a change in current/voltage applied to the coil 11L. Alternatively, the sensing circuit 14 may sense the temperature change of the wireless power transmission device 10 periodically or aperiodically. According to one embodiment, the sensing circuit 14 may include at least one of a current/voltage sensor or a temperature sensor.

The control circuit 12 may control wireless transmission of power to the electronic device 101 through the power transmission circuit 11 . The control circuit 12 can control information to be transmitted or received wirelessly from the electronic device 101 through the communication circuit 13. The control circuit 12 may calculate the amount of power received from the electronic device 101 based on the current or voltage measured by the sensing circuit 14.

According to one embodiment, the received information includes charging setting information related to the battery state of the electronic device 101, power quantity control information related to adjustment of the amount of power transmitted to the electronic device 101, and the electronic device ( It may include at least one of environmental information related to the charging environment of the electronic device 101 or time information of the electronic device 101.

The charging setting information may be information related to the battery state of the electronic device 101 at the time of wireless charging between the wireless power transmission device 10 and the electronic device 101. For example, the charging setting information may include at least one of the total battery capacity of the electronic device 101, remaining battery capacity, number of charging times, battery usage, charging mode, charging method, or wireless reception frequency band.

The amount of power control information may be information for controlling the amount of initial power transmitted according to changes in the amount of power charged in the electronic device 101 during wireless charging between the wireless power transmission device 10 and the electronic device 101. .

The environmental information is information measuring the charging environment of the electronic device 101 by the interface 24 of the electronic device 101, for example, at least one of the internal temperature or external temperature of the electronic device 101. It may include at least one of temperature data including, illuminance data indicating illuminance (brightness) around the electronic device 101, or sound data indicating sound (noise) around the electronic device 101.

The control circuit 12 may be controlled to generate or transmit power to be transmitted to the electronic device 101 based on the charging setting information among the received information. Alternatively, the control circuit 12 determines or changes the amount of power to transmit to the electronic device 101 based on at least some of the received information (e.g., at least one of the power amount control information, environmental information, or time information). You can. Alternatively, the matching circuit 11a can be controlled to change the impedance.

The communication circuit 13 may perform communication with the electronic device 101 in a predetermined manner. The communication circuit 13 may perform data communication with the communication circuit 23 of the electronic device 101. For example, communication circuit 13 may unicast, multicast, or broadcast the signal.

According to one embodiment, the communication circuit 13 and the power transmission circuit 11 are implemented as a single piece of hardware so that the wireless power transmission device 10 can perform communication in an in-band format. 1 A communication circuit 13a, or a second device implemented with hardware different from the power transmission circuit 11 so that the wireless power transmission device 10 can communicate in an out-of-band format It may include at least one of the communication circuits 13b.

According to one embodiment, when the communication circuit 13 includes the first communication circuit 13a capable of performing communication in an in-band format, the first communication circuit 13 includes the power transmission circuit 11 ) can receive the frequency and signal level of the electromagnetic field signal received through the coil 11L. The control circuit 12 may extract information received from the electronic device 101 by decoding the frequency and signal level of the received electromagnetic field signal. Alternatively, the first communication circuit 13 applies a signal for information about the wireless power transmission device 10 to be transmitted to the electronic device 101 to the coil 11L of the power transmission circuit 11, or applies a matching circuit to the coil 11L of the power transmission circuit 11. A signal for information on the wireless power transmission device 10 can be added to the electromagnetic field signal generated when the signal output from 11a is applied to the coil 11L and transmitted to the electronic device 101. The control circuit 12 can control output by changing the connection state of at least one of the inductor or capacitor of the matching circuit 11a through on/off control of the switch device included in the matching circuit 11a.

According to one embodiment, when the communication circuit 13 includes the second communication circuit 13b capable of performing communication in an out-of-band format, the second communication circuit 13b is an electronic device ( Communication can be performed using the communication circuit 23 of 101) and NFC (near field communication), Zigbee communication, infrared communication, visible light communication, Bluetooth communication, or BLE (bluetooth low energy) method.

The communication method of the communication circuit 13 described above is merely exemplary, and the scope of the embodiments of the present disclosure is not limited to the specific communication method performed by the communication circuit 13.

According to one embodiment of the present disclosure, the electronic device 101 may include a power reception circuit 21, a control circuit 22, a communication circuit 23, or an interface 24. The power reception circuit 21 of the electronic device 101 may receive power from the power transmission circuit 11 of the wireless power transmission device 10. The power receiving circuit 21 may be implemented in the form of a built-in battery, or may be implemented in the form of a power receiving interface to receive power from the outside. The power receiving circuit 21 may include a matching circuit 21a, a rectifier circuit 21b, an adjustment circuit 21c, a switch circuit 21d, a battery 21e, or a coil 21L.

The power reception circuit 21 may receive wireless power in the form of electromagnetic waves generated in response to the current/voltage applied to the coil 11L of the power transmission circuit 11 through the coil 21L. For example, the power reception circuit 21 may receive power using the electromotive force formed in the coil 11L of the power transmission circuit 11 and the coil 21L of the power reception circuit 21.

The matching circuit 21a may perform impedance matching. For example, power transmitted through the coil 11L of the wireless power transmission device 10 may be transferred to the coil 21L to form an electromagnetic field. The matching circuit 21a may adjust the frequency band of the formed electromagnetic field signal by adjusting the impedance. The matching circuit 21a can control the input power received from the wireless power transmission device 10 through the coil 21L to have high efficiency and high output by adjusting the impedance. The matching circuit 21a can adjust the impedance based on the control of the control circuit 22. The matching circuit 21a may include at least one of an inductor (eg, a coil (or conductive pattern)), a capacitor, or a switch device. The control circuit 22 can control the connection state with at least one of the inductor or the capacitor through the switch device, and can perform impedance matching accordingly.

The rectifier circuit 21b may rectify the wireless power received by the coil 21L into a direct current form and may be implemented in the form of a bridge diode, for example.

The regulation circuit 21c may convert the rectified power to a set voltage or current. The adjustment circuit 21c may include a DC/DC converter (not shown). For example, the adjustment circuit 21c may convert the rectified power so that the voltage at the output terminal becomes 5V. Alternatively, the minimum or maximum value of the voltage that can be applied may be set at the front end of the adjustment circuit 21c.

The switch circuit 21d can connect the adjustment circuit 21c and the battery 21e. The switch circuit 21d can be maintained in an on/off state under the control of the control circuit 52.

The battery 21e can be charged by receiving power input from the adjustment circuit 21c. In another embodiment, a charger (not shown) may be further disposed between the switch circuit 21d and the battery 21e, and the charger (not shown) operates in a predetermined mode (e.g., CC (constant current) The battery 21e can also be charged by changing the voltage or current of the power input in the mode or CV (constant voltage mode, etc.). In various embodiments of the present disclosure, the DC/DC converter of the adjustment circuit 21c is used to charge the battery. The battery 21e may be charged directly, or the charger (not shown) may once again adjust the power output from the adjustment circuit 21c to charge the battery 21e.

According to one embodiment, the electronic device 101 may include a sensing circuit, and the sensing circuit may sense a change in the power state received by the electronic device 101. For example, the sensing circuit may periodically or aperiodically measure the current/voltage value received by the coil 21L through a predetermined current/voltage sensor. The electronic device 101 may calculate the amount of power received by the electronic device 101 based on the measured current/voltage. The electronic device 101 can be used to change the matching circuit 21a based on the measured current/voltage.

According to one embodiment, the sensing circuit may sense changes in the charging environment of the electronic device 101. For example, the sensing circuit may periodically or aperiodically measure at least one of the internal temperature or external temperature of the electronic device 101 through a predetermined temperature sensor.

The communication circuit 23 may communicate with the wireless power transmission device 10 in a predetermined manner. The communication circuit 23 may perform data communication with the communication circuit 13 of the wireless power transmission device 10. The communication circuit 23 can exchange control signals through data communication with the wireless power transmission device 10. The communication circuit 23 may operate similarly or identically to the communication circuit 13 of the wireless power transmission device 10.

The control circuit 22 may transmit charging setting information for receiving the required amount of power based on information related to the battery state of the electronic device 101 to the wireless power transmission device 10 through the communication circuit 23. For example, when the wireless power transmitter 10 capable of transmitting wireless power is identified, the control circuit 22 determines the total battery capacity of the electronic device 101, remaining battery capacity, number of charging times, battery usage, charging mode, The charging setting information for receiving the required amount of power based on at least one of a charging method or a wireless reception frequency band may be transmitted to the wireless power transmission device 10 through the communication circuit 23.

The control circuit 22 transmits the power amount control information to control the amount of power received from the wireless power transmitter 10 according to changes in the amount of power charged to the electronic device 101 through the communication circuit 23. It can be transmitted to the transmitting device 10. The first communication circuit 23a may include a switch and a capacitor or resistor. The control circuit 22 may turn the switch on/off according to the binary code of the data to be transmitted, based on an on/off keying modulation method. The impedance sensed by the wireless power transmission device 10 can detect a change in the size of the power or current in the power transmission circuit 11 depending on the on/off of the switch, and this can be demodulated into a binary code. , the electronic device 101 can obtain the data it wants to convey.

The electronic device 101 interface 24 can connect the TA (or external electronic device) and the electronic device 101 through a connector. The interface 24 may include a designated system interface, such as a USB communication module connected to the control circuit 22 or a processor via an inter-integrated circuit (I2C). For example, the TA can communicate with the USB communication module of the wireless power reception device 101 through the USB C type CC terminal. According to one embodiment, the USB communication module may include a USB PD (power delivery) communication module for USB PD (power delivery) communication. According to one embodiment, the TA may be a TA that supports the programmable power supply (PPS) standard, or may be a general TA that does not support PPS. For example, a TA supporting PPS may change or adjust the output TA voltage or output TA current in various ways based on the control of the control circuit 22 of the wireless power reception device 101. For TAs that do not support PPS, the output TA voltage or output TA current may be fixed. Interface 24 may be a wired interface.

In FIG. 2, the wireless power transmission device 10 and the electronic device 101 according to an embodiment of the present disclosure are shown as including only the power transmission circuit 11 and the power reception circuit 21, respectively, but the wireless power transmission device ( 10) and the electronic device 101 may include both a power transmission circuit 11 and a power reception circuit 21, respectively. Accordingly, the wireless power transmission device 10 and the electronic device 101 according to an embodiment of the present disclosure may perform the functions of both a power transmission device and an electronic device.

Figure 3 is a perspective view of a wireless power transmission device and an electronic device receiving wireless power according to an embodiment of the present disclosure. Figure 4 is an exploded perspective view of a wireless power transmission device according to an embodiment of the present disclosure.

Referring to FIGS. 3 and 4 , the wireless power transmission device 200 may supply power to the adjacent wireless power reception device 101. The configuration of the wireless power transmission device 200 and the wireless power reception device 101 of FIGS. 3 and 4 is the same as the configuration of the wireless power transmission device 200 and the wireless power reception device 101 of FIGS. 1 and/or 2. It may be the same as all or part of it.

The wireless power transmission device 200 may include a housing 210 that supports the wireless power reception device 101. The housing 210 may accommodate internal components (eg, magnetic material 330) of the wireless power transmission device 200.

According to one embodiment, the housing 210 may include an upper enclosure 211. Top enclosure 211 may be referred to as a front plate, top housing, top cover, front cover, or top surface housing. The upper enclosure 211 may form at least a portion of the exterior of the wireless power transmission device 200. For example, the upper enclosure 211 forms the front of the wireless power transmission device 200 and may face the wireless power reception device 101. The upper enclosure 211 may include an edge area 215 including an uneven pattern 215a. The uneven pattern 215a may be a part of the border area 215 that protrudes above the border area 215 (+Z direction). According to one embodiment, the uneven pattern 215a may be referred to as a structure including a plurality of mountains 216a. According to one embodiment, due to the uneven pattern 215a, in a state in which the wireless power reception device 101 is placed on the wireless power transmission device 200 (e.g., FIG. 2), the wireless power reception device 101 and An empty space may exist between the wireless power transmission devices 200. For example, the air in the empty space located between the wireless power receiving device 101 and the wireless power transmitting device 200 passes between the surface of the wireless power receiving device 101 and the grooves 216b of the uneven pattern 215a. , can flow outward.

According to one embodiment, the upper enclosure 211 may include at least one first through hole (eg, the first through hole 311a in FIG. 5). For example, the upper enclosure 211 may include the first through hole 311a along with the uneven pattern 215a.

The shape of the uneven pattern 215a of the border area 215 shown in FIG. 4 is optional. For example, the uneven pattern 215a is shown in FIG. 4 as a shape in which a plurality of protruding mountains 216a protrude from a substantially flat surface 216b, but the shape of the uneven pattern 215a is not limited thereto. For example, the concavo-convex pattern 215a may have a surface that is substantially wave-shaped. In FIG. 4 , a structure in which the uneven pattern 215a protrudes above the edge area 215 (+Z direction) is disclosed, but the structure of the uneven pattern 215a is not limited to this. For example, in one embodiment, the uneven pattern 215a may surround at least a portion of the upper enclosure 211. In one embodiment (eg, FIG. 7 ), the uneven pattern 215a may protrude upward (+Z direction) from a portion of the housing 310 (eg, frame 313). In one embodiment (eg, FIG. 8 ), the uneven pattern 215a may protrude upward (+Z direction) from a portion of the housing 310 (eg, border area 315). According to one embodiment, the housing 210 may include a protection member 213 surrounding at least a portion of the upper enclosure 211. According to one embodiment, the protection member 213 may support or surround at least a portion of the edge area 215. According to one embodiment, the protection member 213 may be referred to as a decoration member.

According to one embodiment, the housing 210 may include a rear case 212. The rear case 212 may form at least part of the exterior of the wireless power transmission device 200. For example, the rear case 212 may form at least a portion of the side and at least a portion of the rear of the wireless power transmission device 200.

According to one embodiment, the housing 210 may include a support member 217. The support member 217 may support components (eg, the transmission coil 220 and/or the magnetic material 330) of the wireless power transmission device 200. The support member 217 may be located above (+Z) the rear case 212. According to one embodiment, the support member 217 may include a duct for guiding the flow of air generated by the fan 240.

According to one embodiment, the structure of housing 210 is optional. For example, the shape of the protection member 213, the rear case 212, and/or the support member 217 may change depending on the design of the wireless power transmission device 200. According to one embodiment, the protection member 213, rear case 212, and/or support member 217 may be referred to as a frame. According to one embodiment, at least a portion of the frame (eg, rear case 212, protection member 213, and/or support member 217) may be formed integrally with the upper enclosure.

According to one embodiment, the wireless power transmission device 200 may include a transmission coil 220. The transmitting coil 230 may have all or part of the same configuration as the coil 11L of FIG. 2. For example, the transmission coil 230 may form an electromagnetic field by an alternating current signal output from the power generation circuit 11b of FIG. 2.

According to one embodiment, the wireless power transmission device 200 may include a fan 240. According to one embodiment, the fan 240 may generate a flow of air to reduce the temperature of the wireless power transmission device 200 and/or the wireless power reception device 101. The fan 240 may be placed inside the housing 210.

Although the wireless power receiving device 101 is shown as a smartphone in this document, this is optional. For example, the wireless power receiving device 101 may be a smart watch, wireless earphone, or a portable electronic device including a battery.

In this document, the structure of the wireless power transmission device 200 is optional. For example, FIG. 2 shows a wireless power transmission device 200 having a substantially cylindrical shape, but the structure of the wireless power transmission device 200 is not limited thereto. The size of the wireless power transmission device 200 is optional. For example, the width of the wireless power transmission device 200 may be smaller than or equal to the width of the wireless power reception device 101.

Figure 5 is an exploded perspective view of a wireless power transmission device according to an embodiment of the present disclosure. 6 is an exploded perspective view of a transmission assembly, according to one embodiment of the present disclosure.

Referring to FIGS. 5 and 6 , the wireless power transmission device 200 may include a housing 310 (eg, an upper enclosure 311 and a frame 313) and a power transmission module 250. The configuration of the wireless power transmission device 200 of FIGS. 4 and/or 5 may be the same in whole or in part as the configuration of the wireless power transmission device 200 of FIGS. 1, 2, and/or 3. For example, the configuration of the upper enclosure 311 of FIG. 5 may be completely or partially the same as the configuration of the upper enclosure 311 of FIG. 4 . The configuration of the frame 313 in FIG. 5 may be the same in whole or in part as the configuration of the protection member 213, rear case 212, and/or support member 217 in FIG. 4.

According to one embodiment, the upper enclosure 311 may include at least one first through hole 311a. The inside of the wireless power transmission device 200 may be communicated with the outside of the wireless power transmission device 200 through the first through hole 311a. The first through hole 311a may be an air hole penetrating the upper enclosure 311.

According to one embodiment, the frame 313 may include at least one second through hole 313a. The inside of the wireless power transmission device 200 may be communicated with the outside of the wireless power transmission device 200 through the second through hole 313a. For example, the air inside the wireless power transmission device 200 may be transmitted to the outside of the wireless power transmission device 200 through the second through hole 313a. Air outside the wireless power transmission device 200 may be sucked into the interior of the wireless power transmission device 200 through the second through hole 313a. The second through hole 313a may be an air hole penetrating the frame 313.

According to one embodiment, the border area 315 may include at least one third through hole 313b. The inside of the wireless power transmission device 200 may be communicated with the outside of the wireless power transmission device 200 through the third through hole 313b. For example, the air inside the wireless power transmission device 200 may be transmitted to the outside of the wireless power transmission device 200 through the third through hole 313b. Air outside the wireless power transmission device 200 may be sucked into the interior of the wireless power transmission device 200 through the third through hole 313b. The third through hole 313b may be an air hole penetrating the edge area 315.

According to one embodiment, the wireless power transmission device 200 may include a power transmission module 250 for providing power to the wireless power reception device 101. The power transmission module 250 may be placed in a space defined by the upper enclosure 311 and the frame 313. For example, the power transmission module 250 may be located between the upper enclosure 311 and the frame 313. Power transmission module 250 may be referred to as a power transmission assembly.

According to one embodiment, the power transmission module 250 may include a transmission coil 320. The configuration of the transmitting coil 320 may be the same in whole or in part as the configuration of the transmitting coil 220 of FIG. 4 . For example, when a current is applied, the transmitting coil 320 may form a magnetic field to induce or resonate the current.

According to one embodiment, the transmitting coil 320 may have a closed curve shape. For example, the air passing through the through hole (e.g., the first through hole 311a, the second through hole 313a, and/or the third through hole 360a) is an empty space surrounded by the transmitting coil 320. It may flow inside or outside the wireless power transmission device 200.

According to one embodiment, the power transmission module 250 may include a magnetic material 330. According to one embodiment, the magnetic material 330 connects the transmitting coil 320 of the wireless power transmitting device 200 to the receiving coil (e.g., the wireless power receiving device 101 of FIG. 4) of the wireless power receiving device (e.g., the wireless power receiving device 101 of FIG. 4). The position of the wireless power transmission device 200 can be guided so that it is located corresponding to the power reception circuit 21 of 2. According to one embodiment, the wireless power reception device 101 may detect the proximity of the wireless power transmission device 200 by detecting the magnetic material 330. According to one embodiment, the magnetic material 330 may surround at least a portion of the transmission coil 320 and/or at least a portion of the ferrite 360.

According to one embodiment, the power transmission module 250 may include ferrite 360. The ferrite 360 may be configured to increase the strength of the magnetic field transmitted to the wireless power receiving device (e.g., the wireless power receiving device 101 of FIG. 3). According to one embodiment, the ferrite 360 may include body centered cubic iron. According to one embodiment, the ferrite 360 may be referred to as a ferrite sheet or a magnetic field strengthening member. According to one embodiment, the ferrite 360 may include at least one third through hole 360a. The inside of the wireless power transmission device 200 may be communicated with the outside of the wireless power transmission device 200 through the third through hole 360a.

According to one embodiment, the power transmission module 250 may include a shielding member 370. The shielding member 370 may shield at least a portion of the magnetic field of the magnetic material 330. According to one embodiment, the shielding member 370 may be disposed below (-Z) the magnetic material 330. The shielding member 370 may surround at least a portion of the transmitting coil 320 and/or at least a portion of the ferrite 360.

Figure 7 is a cross-sectional view of a wireless power transmission device according to an embodiment of the present disclosure. Figure 8 is a cross-sectional view of a wireless power transmission device according to an embodiment of the present disclosure.

7 and/or 8, the wireless power transmission device 200 includes a housing 310, a transmission coil 320, a magnetic material 330, a fan 340, a circuit board 350, and/or a ferrite ( 360). The configuration of the housing 310, transmission coil 320, magnetic material 330, fan 340, and ferrite 360 in FIGS. 7 and/or 8 is similar to that of the housing 310 in FIGS. 4, 5, and/or 6. ), all or part of the configuration of the transmission coil 320, magnetic material 330, fan 240, and ferrite 360 may be the same.

According to one embodiment, the housing 310 may include an upper enclosure 311. The upper enclosure 311 has a first side 311b (e.g., top side) for facing the wireless power receiving device 101 and a second side 311c (e.g., back side) opposite to the first side 311b. may include. The upper enclosure 311 may include at least one first through hole 311a penetrating the first surface 311b and the second surface 311c. The first through hole 311a may provide a path through which air flows for heat dissipation of the wireless power transmission device 200 and/or the power reception device 101. For example, at least a portion of the air outside the wireless power transmission device 200 may be transmitted into the interior of the wireless power transmission device 200 through the first through hole 311a. At least a portion of the air inside the wireless power transmission device 200 may be transmitted to the outside of the wireless power transmission device 200 through the first through hole 311a. For example, an air flow for heat dissipation of the wireless power transmission device 200 and/or the wireless power reception device 101 may be generated by the first through hole 311a. According to one embodiment, the first through hole 311a may be referred to as a first air hole.

According to one embodiment, the upper enclosure 311 may have various shapes. According to one embodiment (eg, FIG. 7 ), the upper enclosure 311 may be formed integrally with the side wall structure 317. For example, the upper enclosure 311 may have a shape that substantially surrounds some of the components of the wireless power transmission device 200 (eg, the transmission coil 320 and the magnetic body 330). According to one embodiment (eg, FIG. 8), the upper enclosure 311 may have a substantially flat plate shape.

According to one embodiment, the housing 310 may include a frame 313. The frame 313 may surround at least a portion of the upper enclosure 311. The frame 313 may accommodate components of the wireless power transmission device 200 (e.g., transmission coil 320, magnetic material 330, fan 340, and ferrite 360). The frame 313 may surround at least some of the components of the wireless power transmission device 200. According to one embodiment, the upper enclosure 311, side wall structure 317 and/or lower enclosure 319 may be surrounded by a frame 313. According to one embodiment, the configuration of the frame 313 may be the same in whole or in part as the configuration of the rear case 212 of FIG. 4 . For example, frame 313 may be referred to as a part of housing 310 that forms at least a portion of the side and/or rear surface of housing 310 .

According to one embodiment, the frame 313 may include a border area 315. According to one embodiment, the border area 315 may be formed in a wave pattern shape. For example, the border area 315 may have a sinusoidal surface shape. The border area 315 may include a plurality of mountains (eg, the mountain 315a of FIG. 9) and a plurality of valleys (eg, the valley 315b of FIG. 9). According to one embodiment, when the wireless power receiving device 101 is placed on the wireless power transmitting device 200 (e.g., during charging), at least a portion of the acid 315a contacts the wireless power receiving device 101. And, at least a portion of the trough 315b may be spaced apart from the wireless power reception device 101.

According to one embodiment, the border area 315 may provide an air path for heat dissipation of the wireless power transmission device 200. For example, the air passing through the second space (S2) between the surface of the border area 315 and the wireless power receiving device 101 is the heat of the wireless power transmitting device 200 and/or the wireless power receiving device 101. can be dispersed. For example, at least a portion of the air inside the wireless power transmitting device 200 passes through the space (e.g., the second space S2) between the border area 315 and the surface of the wireless power receiving device 101 and wirelessly It may be transmitted to the outside of the power transmission device 200. At least a portion of the air outside the wireless power transmission device 200 may pass through the second space S2 and be transmitted to the inside of the wireless power transmission device 200. The second space S2 may be an empty space formed by the surface of the edge area 315 (eg, peaks 315a and valleys 315b in FIG. 9 ).

According to one embodiment, the frame 313 may protrude forward or above (+Z direction) the wireless power transmission device 200 rather than the upper enclosure 311. For example, the border area 315 of the frame 313 may protrude upward (+Z direction) by a first distance d1 from the first surface 311b of the upper enclosure 311.

According to one embodiment, housing 310 may include sidewall structure 317. The sidewall structure 317 may surround components of the wireless power transmission device 200 (e.g., transmission coil 320, magnetic material 330, fan 340, and ferrite 360). According to one embodiment, sidewall structure 317 may extend from upper enclosure 311. For example, the side wall structure 317 may extend from the second side 311c of the upper enclosure 311 toward the bottom (-Z direction) of the wireless power transmission device 200. According to one embodiment, at least a portion of the sidewall structure 317 may be referred to as a support member. The sidewall structure 317 may support components of the wireless power transmission device 200 (e.g., transmission coil 320, magnetic material 330, fan 340, and/or ferrite 360). According to one embodiment, the shape of the side wall structure 317 may change depending on the design of the wireless power transmission device 200, and may be excluded from some drawings (eg, FIG. 8) for convenience of explanation.

According to one embodiment, the wireless power transmission device 200 includes a support member (e.g., a transmission coil 320, a magnetic material 330, a fan 340, and/or a ferrite 360) for supporting the component. 217) may be included. For convenience of explanation, the support member 217 is excluded from FIG. 7 . In one embodiment, the support member 217 may support the ferrite 360 while being connected to a portion of the housing 310 (e.g., screw fastened) below the ferrite 360 (-Z direction). there is. In one embodiment, the support member 217 is connected (e.g., screw fastened) with a portion of the housing 310 below the circuit board 350 (-Z direction) to support the ferrite 360. You can.

According to one embodiment, the housing 310 may include a lower enclosure 319. Lower enclosure 319 may be surrounded by side wall structure 317 . Lower enclosure 319 may extend from sidewall structure 317 . The lower enclosure 319 may be located between the fan 340 and the transmitting coil 320. In one embodiment, lower enclosure 319 extends from a portion of housing 310 (e.g., sidewall structure 317) and may support electronic components (e.g., circuit board 350). For example, Fan 340 may be located between lower enclosure 319 and frame 313.

According to one embodiment, the lower enclosure 319 may include at least one through hole (not shown). The through hole formed in the lower enclosure 319 may provide a path through which the air of the wireless power transmission device 200 flows.

According to one embodiment, the configuration of the upper enclosure 311 and/or lower enclosure 319 is optional. For example, in one embodiment (not shown), side wall structure 317 and bottom enclosure 319 may be omitted. According to one embodiment, the wireless power transmission device 200 may be provided as an integrated component. For example, at least one of the transmission coil 320, fan 340, circuit board 350, and/or ferrite 360 may be connected to the frame 313. In the wireless power transmission device 200 provided as an integrated part, the side wall structure 317 and the lower enclosure 319 may be omitted.

According to one embodiment, the transmitting coil 320 may be located below the upper enclosure 311. For example, the transmitting coil 320 may be located below the second side 311c of the upper enclosure 311.

According to one embodiment, the magnetic material 330 may be spaced apart from at least a portion of the housing 310. As the magnetic material 330 and the housing 310 are spaced apart, at least some of the air inside the wireless power transmission device 200 passes through the space between the magnetic material 330 and the housing 310, thereby forming the wireless power transmission device 200. can be transmitted outside of . According to one embodiment, the magnetic material 330 may be spaced apart from the transmitting coil 320.

Referring to FIG. 7 , the magnetic material 330 may be spaced apart from the frame 313 . For example, the magnetic material 330 may be attached or connected to the second surface 311c of the upper enclosure 311. The magnetic material 330 is spaced apart from the frame 313 and may form a first space S1 through which air can pass. The first space S1 may be referred to as an empty space between the magnetic material 330 and the frame 313. The magnetic material 330 may surround at least a portion of the transmission coil 320.

Referring to FIG. 8, the magnetic material 330 may be spaced apart from the upper enclosure 311. For example, the magnetic material 330 may be disposed on the inner surface of the frame 313. The magnetic material 330 is spaced apart from the upper enclosure 311 and may form a third space S3 through which air can pass. The third space S3 may be referred to as an empty space between the magnetic material 330 and the upper enclosure 311. The magnetic material 330 may surround at least a portion of the transmitting coil 320 and/or at least a portion of the upper enclosure 311. According to one embodiment (eg, Figure 8), a portion of the border area 315 may be extended to overlap the upper enclosure 311.

According to one embodiment, the fan 340 may generate a flow of air for heat dissipation of the wireless power transmission device 200 and/or the wireless power reception device 101. According to one embodiment, the fan 340 may be referred to as a cooling fan.

According to one embodiment, the fan 340 may generate air flow toward the top (+Z direction), bottom (-Z direction), and/or side of the wireless power transmission device 200.

Referring to FIG. 7, the fan 340 transfers the air inside the wireless power transmission device 200 to the outside of the wireless power transmission device 200 through the first space (S1) and the second space (S2). , air outside the wireless power transmission device 200 can be transferred to the inside of the wireless power transmission device 200. As air flows into the wireless power transmission device 200, the temperature of the wireless power transmission device 200 may be reduced. By releasing air to the outside of the wireless power transmission device 200, the temperature of the outside of the wireless power transmission device 200 (eg, the wireless power reception device 101) may be reduced.

According to one embodiment, the fan 340 passes at least a portion of the air inside the wireless power transmission device 200 through the first space (S1) and the second space (S2), A first air flow (w1) transmitted to the outside can be generated. According to one embodiment, the fan 340 passes at least a portion of the air outside the wireless power transmission device 200 through the second space (S2) and the first space (S1), A second air flow (w2) transmitted internally may be generated.

Referring to FIG. 8, the fan 340 transfers the air inside the wireless power transmission device 200 to the outside of the wireless power transmission device 200 through the second space S2 and the third space S3. , air outside the wireless power transmission device 200 can be transferred to the inside of the wireless power transmission device 200. According to one embodiment, the fan 340 passes at least a portion of the air inside the wireless power transmission device 200 through the second space (S2) and the third space (S3), A fifth air flow (w5) transmitted to the outside can be generated. According to one embodiment, the fan 340 passes at least a portion of the air outside the wireless power transmission device 200 through the third space (S3) and the second space (S2), A sixth air flow (w6) transmitted internally can be generated. According to one embodiment, the fifth air flow w5 and/or the sixth air flow w6 may pass through the third through hole 313b.

According to one embodiment, the fan 340 is connected to a through hole (e.g., a first through hole 311a, a second through hole 313a, and/or a third through hole 360a) of the wireless power transmission device 200. Passing through, the air inside the wireless power transmission device 200 is delivered to the outside of the wireless power transmission device 200, or the air outside the wireless power transmission device 200 is delivered to the inside of the wireless power transmission device 200. You can. According to one embodiment, the fan 340 receives air from the outside of the wireless power transmission device 200 through the second through hole 313a, and the first through hole 311a and the third through hole 360a A third air flow w3 that transfers air to the outside of the wireless power transmission device 200 (eg, the wireless power reception device 101) can be generated. According to one embodiment, the fan 340 receives air through the first through hole 311a and the third through hole 360a, and passes through the second through hole 313a to the wireless power transmission device 200. A fourth air flow (w4) that delivers air to the outside of can be generated.

According to one embodiment, the fan 340 may be provided as a modular component. For example, the fan 340 may be selectively assembled or attached to the wireless power transmission device 200. According to one embodiment, a portion (e.g., frame 313) of the housing 310 that accommodates the fan 340 includes components for wireless charging (e.g., a transmitting coil 320, a circuit board 350, and/or It may be coupled with a portion of the housing 310 (e.g., the upper enclosure 311, the side wall structure 317, and/or the lower enclosure 319) that accommodates the ferrite 360).

According to one embodiment, the location where the fan 340 is placed can be selectively designed. For example, in FIGS. 7 and 8, the fan 340 is disposed below (-Z) the circuit board 350, but the location of the fan 340 is not limited thereto. For example, in one embodiment, fan 340 may be located between ferrite 360 and circuit board 350.

According to one embodiment, the side wall structure 317 and/or the lower enclosure 319 may be excluded from the wireless power transmission device 200. For example, in a structure in which the fan 340 is provided as an integrated part in the wireless power transmission device 200, the side wall structure 317 and/or the lower enclosure 319 may be excluded.

According to one embodiment, the circuit board 350 includes electronic components for operating the wireless power transmission device 200 (e.g., the power transmission circuit 11 of FIG. 2, the control circuit 12, the communication circuit 13, and /or a sensing circuit 14) may be accommodated. Circuit board 350 may accommodate a processor configured to control the power transmission circuit 11 to apply power to the transmission coil 320.

According to one embodiment, the circuit board 350 may be disposed within the housing 310. According to one embodiment, the circuit board 350 may be disposed above the fan 340 (+Z direction). The temperature of the electronic components accommodated in the circuit board 350 may be reduced by the flow of air generated by the fan 340. For example, the heat generated in the electronic components accommodated in the circuit board 350 by the air flow (e.g., the third air flow (w3) and/or the fourth air flow (w4)) generated by the fan 340 At least some of it can be distributed. The location where the circuit board 350 is placed is optional. For example, according to one embodiment (not shown), the circuit board 350 may be disposed below the fan 340 (-Z direction).

9 is a top view of a border area, according to an embodiment of the present disclosure.

Referring to FIG. 9 , the border area 315 may include a plurality of peaks 315a and a plurality of valleys 315b. The configuration of the border area 315 of FIG. 9 may be completely or partially the same as the configuration of the border area 215 of FIG. 4 . For example, the configuration of the peaks 315a and valleys 315b of FIG. 9 may be the same in whole or in part as the configuration of the peaks 216a and valleys 216b of the uneven pattern 215a of FIG. 4 .

According to one embodiment, the edge area 315 may have a curved shape to induce air flow. For example, the height (eg, length in the Z-axis direction) of the border area 315 may be different for each part. According to one embodiment, the border area 315 may include a plurality of peaks 315a and a plurality of valleys 315b. According to one embodiment, the border area 315 may be formed in a wave pattern shape. For example, the height of the border area 315 may have a sine-shaped or cosine-shaped surface. For example, the plurality of mountains 315a and/or the plurality of valleys 315b may have a curved surface. According to one embodiment, the shapes of the peaks 315a and valleys 315b located in the border area 315 may vary. For example, the mountains 315a and/or the valleys 315b may have a wavy or straight shape. Due to the shape of the mountain 315a and/or the valley 315b, the shape of the border area 315 may be implemented in various ways.

The structure of the border area 315 of FIG. 9 may be applied to the border area 315 of a previously described frame (eg, the frame 313 of FIGS. 7 and/or 8).

FIG. 10A is a top view of a wireless power transmission device including a magnetic material, a ferrite, and an upper enclosure, according to an embodiment of the present disclosure. FIG. 10B is a diagram for explaining the air flow of a wireless power transmission device including a magnetic material, a ferrite, and an upper enclosure, according to an embodiment of the present disclosure.

Referring to FIGS. 10A and/or 10B , the wireless power transmission device 200 may include a transmission coil 320, a magnetic material 330, a fan 340, and/or a ferrite 360.

The configuration of the transmitting coil 320, magnetic material 330, fan 340, and/or ferrite 360 of FIGS. 10A and/or 10B is similar to that of the transmitting coil 320 and magnetic material 330 of FIGS. 7 and/or 8. ), may be the same in whole or in part as the configuration of the fan 340 and/or the ferrite 360.

According to one embodiment, the magnetic material 330 may be spaced apart from the transmitting coil 320. For example, the magnetic material 330 may surround at least a portion of the transmission coil 320 while being spaced apart from the transmission coil 320 . At least a portion of the air generated by the fan 340 is transmitted to the outside of the wireless power transmission device 200 through the space between the magnetic material 330 and the transmission coil 320 (e.g., the third space S3 in FIG. 8). It can be delivered.

According to one embodiment, the ferrite 360 may include a plurality of third through holes 360a. Referring to FIG. 10A, when the wireless power transmission device 200 is viewed from the top (+Z direction), the third through hole 360a of the ferrite 360 is an empty space 320a surrounded by the transmitting coil 320. ) may overlap. For example, the air flow generated by the fan 340 passes through the third through hole 360a of the ferrite 360 and the empty space 320a surrounded by the transmission coil 320 to the wireless power transmission device 200. It can flow outward.

The structure of the wireless power transmission device 200 of FIGS. 10A and/or 10B may be applied to the previously described wireless power transmission device (e.g., the wireless power transmission device 200 of FIGS. 7 and/or 8).

When using wireless power transmission, charging efficiency may be reduced due to heat generated in the power transmission circuit and/or power reception circuit.

According to an embodiment of the present disclosure, a wireless power transmission device can be provided that can reduce overheating of the wireless power transmission device and/or the wireless power reception device by dispersing heat generated during wireless power transmission.

The problems to be solved by the present disclosure are not limited to the above-mentioned problems, and may be expanded in various ways without departing from the spirit and scope of the present disclosure.

According to an embodiment of the present disclosure, a wireless power transmission device (e.g., wireless power transmission device 200 of FIG. 1) surrounds an upper enclosure (e.g., upper enclosure 311 of FIG. 7) and at least a portion of the upper enclosure. , Contains a border area (e.g., border area 315 in FIG. 7) including a plurality of valleys (e.g., valley 315b in FIG. 9) and a plurality of mountains (e.g., mountain 315a in FIG. 9). A housing (e.g., housing 310 in FIG. 7) including a frame (e.g., frame 313 in FIG. 7), and a transmitting coil (e.g., transmitting coil 320 in FIG. 7) disposed below the upper enclosure. , a magnetic material disposed below the upper enclosure and surrounding at least a portion of the transmission coil, a magnetic material spaced apart from the frame (e.g., the magnetic material 330 of FIG. 7) and a fan located below the magnetic material (e.g., FIG. It may include a fan 340 of 7).

According to one embodiment, the fan has a first space between the frame and the magnetic material (e.g., the first space (S1) in FIG. 7) and a second space (e.g., the first space (S1) in FIG. 7) formed by the plurality of valleys and the plurality of mountains. : The air inside the wireless power transmission device is discharged to the outside of the wireless power transmission device after passing through the second space (S2) in FIG. 7, or the air inside the wireless power transmission device is discharged to the outside of the wireless power transmission device after passing through the second space and the first space. It may be configured to suck external air into the wireless power transmission device. For example, the air inside the wireless power transmission device passes through the first space between the frame and the magnetic material and the second space formed by the plurality of valleys and the plurality of mountains using the fan to transmit the wireless power. It can be transmitted outside of the transmitting device. For example, the air outside the wireless power transmission device passes through the second space formed by the plurality of valleys and the plurality of mountains and the first space between the frame and the magnetic material using the fan to transmit the wireless power. It can be transmitted inside the transmitting device. The temperature of the wireless power transmission device and/or the electronic device (eg, wireless power reception device) may be reduced by transferring air outside the wireless power transmission device, which has a relatively low temperature, into the interior of the wireless power transmission device.

According to one embodiment, the housing is a side wall structure extending from the upper enclosure, a side wall structure (e.g., side wall structure 317 in FIG. 7) that accommodates the transmission coil and the magnetic material, and a lower part connected to the side wall structure. It may include an enclosure (e.g., lower enclosure 319 in FIG. 7). The frame may surround the sidewall structure.

According to one embodiment, the fan may be connected to the frame, and the fan may be located between the lower enclosure and the frame.

According to one embodiment, at least one of the transmission coil, the ferrite, the circuit board, and the fan may be connected to the frame.

According to one embodiment, the upper enclosure has a first side (e.g., FIG. a first surface 311b in Figure 7), a second surface opposite to the first surface (e.g., second surface 311c in Figure 7), and at least one second surface penetrating the first surface and the second surface. 1 may include a through hole (e.g., the first through hole 311a in FIG. 7).

According to one embodiment, the frame may include at least one second through hole (eg, the second through hole 313a in FIG. 7).

According to one embodiment, the wireless power transmission device may further include ferrite (eg, ferrite 360 in FIG. 7) located below the transmission coil.

According to one embodiment, the ferrite may include at least one third through hole (eg, third through hole 360a of FIG. 7).

According to one embodiment, the border area of the frame is in front of the wireless power transmission device (e.g., +Z direction in FIG. 7) than the first side of the upper enclosure (e.g., the first side 311b in FIG. 7). ) may protrude. As the edge area protrudes beyond the first surface, a path through which air flows can be formed. As the air flows, the maximum temperature of the wireless power transmission device and/or the wireless power reception device can be reduced and charging efficiency can be increased.

According to one embodiment, the wireless power transmission device includes a circuit housing a power transmission circuit (e.g., power transmission circuit 11 in FIG. 2) and a processor configured to control the power transmission circuit to apply power to the transmission coil. It may include a substrate (eg, circuit board 350 of FIG. 7).

According to one embodiment, the fan may be located between the circuit board and the frame.

According to one embodiment, the fan may be located between the transmission coil and/or the ferrite and the circuit board.

According to one embodiment, the magnetic material may be spaced apart from the transmitting coil.

According to one embodiment, the fan passes through at least one first through hole of the upper enclosure (e.g., first through hole 311a in FIG. 7) and at least one second through hole of the frame (e.g., FIG. 7). A flow of air configured to be transmitted to the outside of the wireless power transmission device through the second through hole 313a) and at least one third through hole (e.g., the third through hole 360a in FIG. 7) of the ferrite. Can be configured to generate.

According to one embodiment, at least a portion of the plurality of mountains may be configured to contact a wireless power reception device (eg, the wireless power reception device 101 of FIG. 7). The plurality of goals may be configured to be spaced apart from the wireless power reception device. For example, when the wireless power receiving device 101 is placed on the wireless power transmitting device 200 for charging, air may flow through the space between the plurality of valleys and the wireless power receiving device.

According to an embodiment of the present disclosure, a wireless power transmission device (e.g., the wireless power transmission device 200 of FIG. 1) includes an upper enclosure (e.g., the upper enclosure 311 of FIG. 5) and at least a portion of the upper enclosure. A housing (e.g., housing 310 in FIG. 5) including an enclosing frame (e.g., frame 313 in FIG. 5), and a transmitting coil disposed beneath the upper enclosure (e.g., transmitting coil 320 in FIG. 5). ), a magnetic material surrounding at least a portion of the transmission coil and spaced apart from the transmission coil (e.g., the magnetic material 330 in FIG. 5), and a fan disposed below the transmission coil (e.g., the fan 240 in FIG. 4) may include. The frame has a border area (e.g., border area 315 in FIG. 9) including a plurality of mountains (e.g., mountain 315a in FIG. 9) and a plurality of valleys (e.g., valley 315b in FIG. 9). may include. The fan includes a second empty space formed by the plurality of valleys and the plurality of mountains (e.g., the second space S2 in FIGS. 7 and/or 8) and a first empty space between the magnetic material and the housing ( Example: It may be configured to transmit air to the outside of the wireless power transmission device through the first space (S1) in FIG. 7 and/or the third space (S3) in FIG. 8.

According to one embodiment, the magnetic material may be connected to the rear surface of the upper enclosure (eg, the second surface 311b in FIG. 7). The first empty space may be a space between the frame and the magnetic material (eg, the first space S1 in FIG. 7).

According to one embodiment, the magnetic material may be attached to the frame. The first empty space may be a space between the magnetic material and the enclosure (eg, the third space S3 in FIG. 8).

According to one embodiment, the plurality of mountains in the border area may protrude in front of the wireless power transmission device rather than the front of the upper enclosure (e.g., the first side 311b of FIG. 7 and/or FIG. 8). there is.

According to one embodiment, the fan passes through at least one first through hole of the upper enclosure (e.g., first through hole 311a in FIG. 5) and at least one second through hole of the frame (e.g., FIG. 5). It may be configured to generate a flow of air configured to be transmitted to the outside of the wireless power transmission device through the second through hole 313a.

The wireless power transmission device of the present disclosure described above is not limited to the above-described embodiments and drawings, and various substitutions, modifications, and changes are possible within the technical scope of the present disclosure as is known in the technical field to which the present invention pertains. It will be clear to those who have knowledge.

101: Wireless power receiving device
200: wireless power transmission device
210, 310: housing
211, 311: upper enclosure
220, 320: Transmitting coil
240, 340: Fan
311a: first through hole
313: frame
313a: second through hole
315: Border area
330: magnetic material
350: circuit board
360: Ferrite
S1: first space
S2: Second space

Claims (20)

In the wireless power transmission device 200,
A frame comprising a front plate (211, 311) and a border area (215, 315) surrounding at least a portion of the front plate and including a plurality of valleys (216b, 315b) and a plurality of peaks (216a, 315a) Housing (210, 310) including 313);
Transmitting coils 220 and 320 disposed below the front plate;
a magnetic body 330 disposed below the front plate and surrounding at least a portion of the transmission coil and spaced apart from the frame; and
A wireless power transmission device including fans (240, 340) located below the magnetic material.
According to claim 1,
The fan passes the first space (S1) between the frame and the magnetic material and the second space (S2) formed by the plurality of valleys and the plurality of mountains to supply the wireless power to the air inside the wireless power transmission device. A wireless power transmission device configured to emit air to the outside of the transmission device or to suck air outside the wireless power transmission device into the interior of the wireless power transmission device after passing through the second space and the first space.
According to claim 1 or 2,
The housing is a side wall structure extending from the front plate and includes a side wall structure 317 that accommodates the transmission coil and the magnetic material, and a lower enclosure 319 connected to the side wall structure,
The frame is a wireless power transmission device surrounding the side wall structure.
According to any of the preceding claims,
The fan is connected to the frame, and the fan is located between the lower enclosure and the frame.
According to any of the preceding claims,
A wireless power transmission device wherein at least one of the transmission coil and the fan is connected to the frame.
According to any of the preceding claims,
The front plate has a first side (311b) configured to face an external electronic device for receiving power from the wireless power transmitter, a second side (311c) opposite the first side, and the first side and the An electronic device including at least one first through hole 311a penetrating the second surface.
According to any of the preceding claims,
The frame is a wireless power transmission device including at least one second through hole (313a).
According to any of the preceding claims,
A wireless power transmission device further comprising a ferrite 360 located below the transmitting coil.
According to any of the preceding claims,
The ferrite is a wireless power transmission device including at least one third through hole (360a).
According to any of the preceding claims,
The border area of the frame protrudes forward of the wireless power transmission device beyond the first side (311b) of the front plate.
According to any of the preceding claims,
A wireless power transmission device further comprising a circuit board (350) housing a power transmission circuit (11) and a processor configured to control the power transmission circuit to apply power to the transmission coil.
According to any of the preceding claims,
The fan is a wireless power transmission device located between the circuit board and the frame.
According to any of the preceding claims,
The magnetic material is a wireless power transmission device spaced apart from the transmission coil.
According to any of the preceding claims,
The fan passes through at least one first through hole 311a of the front plate and at least one second through hole 313a of the frame to generate a flow of air configured to be delivered to the outside of the wireless power transmission device. A configured wireless power transmission device.
According to any of the preceding claims,
At least a portion of the plurality of mountains is configured to contact the wireless power receiving device, and the plurality of valleys are configured to be spaced apart from the wireless power receiving device.
In the wireless power transmission device 200,
A housing 310 including front plates 211 and 311 and a frame 313 surrounding at least a portion of the front plates;
Transmitting coils 220 and 320 disposed below the front plate;
A magnetic body 330 surrounding at least a portion of the transmission coil and spaced apart from the transmission coil; and
It includes fans 240 and 340 disposed below the transmitting coil,
The frame includes border areas 215, 315 including a plurality of peaks 215a, 315a and a plurality of valleys 215b, 315b,
The fan blows air out of the wireless power transmission device through the second empty space (S2) formed by the plurality of valleys and the plurality of mountains and the first empty space (S1, S3) between the magnetic material and the housing. A wireless power transmission device configured to transmit.
According to claim 16,
The magnetic material is connected to the back surface 311c of the front plate,
The first empty space is a space (S1) between the frame and the magnetic material.
The method of claim 16 or 17,
The magnetic material is attached to the frame,
The first empty space is a space (S3) between the magnetic material and the enclosure.
According to any one of claims 16 to 18,
The plurality of mountains in the border area protrude forward of the wireless power transmission device beyond the front surface (311b) of the front plate.
According to any one of claims 16 to 19,
The fan passes through at least one first through hole 311a of the front plate and at least one second through hole 313a of the frame to generate a flow of air configured to be delivered to the outside of the wireless power transmission device. A configured wireless power transmission device.

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