KR20170084526A - Methods for sterilizing, radiating, and processing wireless power receiver, and wireless power transmitting apparatus for performing the methods - Google Patents

Abstract

According to an embodiment, a method of processing a wireless power receiver that is seated in a charging area of a wireless power transmission device includes operating the heat dissipation fan when the wireless power receiver is seated in a charging area and power is wirelessly transmitted to the wireless power receiver Cooling the heat of at least one of the wireless power receiver or the charging area and irradiating light in the ultraviolet wavelength band with the wireless power receiver; And stopping the irradiation of the light and stopping the operation of the heat-radiating fan when the power transmission to the wireless power receiver is terminated.

Description

TECHNICAL FIELD The present invention relates to a method of sterilizing, radiating and treating a wireless power receiver, and a wireless power transmission apparatus performing the method.

Embodiments relate to a method of sterilizing, radiating and treating a wireless power receiver and a wireless power transmission device performing the method.

Recently, as the information and communication technology rapidly develops, a ubiquitous society based on information and communication technology is being made.

In order for information communication devices to be connected anytime and anywhere, sensors equipped with computer chips having communication functions should be installed in all facilities of the society. Therefore, power supply to these devices and sensors is a new problem.

In addition, not only cell phones but also music player devices such as Bluetooth handsets and iPods have been rapidly increasing, so charging the battery has become a new problem for users.

To solve this problem, wireless power transmission technology recently appeared. Wireless power transmission technology refers to a technique of wirelessly transmitting electrical energy from a transmitter to a receiver using magnetic induction principle.

Until now, energy transmission using radio has been classified into a magnetic induction type, a self resonance type, and a power transmission method using a short wavelength radio frequency.

Since the receiver is frequently exposed to the environment of the user and the user, the receiver may have bacteria or viruses, which may be harmful to the human body, and the device may be adversely affected by the heat generated when the transmitter transmits power to the receiver for a long period of time.

Embodiments provide a method of sterilizing, dissipating, and treating a wireless power receiver capable of eliminating germs present in a wireless power receiver and improving heat dissipation characteristics, and a wireless power transmission device performing the method.

According to one embodiment, a method of sterilizing the wireless power receiver that receives power from a wireless power transmission device wirelessly includes the steps of: when power is wirelessly transmitted to the wireless power receiver, ; And stopping the irradiation of the light when the wireless transmission of power to the wireless power receiver is terminated.

For example, the sterilization method may further include stopping the irradiation of the light when the light is irradiated to the wireless power receiver for a predetermined time while power is being wirelessly transmitted to the wireless power receiver have.

For example, the method of sterilizing the wireless power receiver further comprises illuminating the light with the wireless power receiver when sterilization of the wireless power receiver is required, with the wireless power receiver in the charging zone . The step of further illuminating the light may be performed when power is not being wirelessly transmitted to the wireless power receiver.

For example, the predetermined time may be the time required to remove 70% or more of the bacteria of the wireless power receiver.

According to another embodiment, a method of radiating radio power receivers for receiving power from a wireless power transmission device wirelessly includes the steps of: when power is wirelessly transmitted to the wireless power receiver, Cooling the heat of at least one of the wireless power receiver or the charging area by operating a heat radiating fan when the surface temperature is equal to or higher than a predetermined temperature; And stopping the operation of the heat radiating fan when the wireless transmission of power to the wireless power receiver is terminated.

For example, the heat dissipation method of the wireless power receiver may further include the step of operating the heat dissipation fan further when heat dissipation of the wireless power receiver is required, with the wireless power receiver being seated in a charging area . The further operation of the heat dissipation fan may be performed when power is not being wirelessly transmitted to the wireless power receiver.

According to yet another embodiment, a method of processing a wireless power receiver that is seated in a charging region of a wireless power transmission device includes the steps of: when the wireless power receiver is seated in a charging region and power is wirelessly transmitted to the wireless power receiver, Operating a fan to cool at least one of the wireless power receiver or the charging area and illuminate light in the ultraviolet wavelength band with the wireless power receiver; And stopping the irradiation of the light and stopping the operation of the heat radiating fan when the power transmission to the wireless power receiver is terminated.

For example, the method of processing the wireless power receiver may include: proceeding to the step of illuminating the light when sterilization of the wireless power receiver is required when power is not being wirelessly transmitted to the wireless power receiver; And if the operation of the heat radiating fan is required, proceeding to operating the heat radiating fan; When power is transferred to the wireless power receiver, proceeding to operating the heat dissipation fan if the surface temperature of the charged area is above a predetermined temperature; When power is transferred to the wireless power receiver, proceeding to illuminating the wireless power receiver with light if the surface temperature of the charging area is below a predetermined temperature; And proceeding to stopping the irradiation of the light when the light has been irradiated to the wireless power receiver for a predetermined time when the power is continuously supplied to the wireless power receiver and stopping the operation of the heat radiating fan have.

According to yet another embodiment, a wireless power transmission apparatus capable of wirelessly transmitting power to a wireless power receiver includes a light irradiating unit for irradiating the ultraviolet wave band with the wireless power receiver, or a light irradiating unit for irradiating at least one of the wireless power receiver or the charging region At least one of heat-radiating portions for providing wind to the place; A power transmitter including the charging area where the wireless power receiver is seated and wirelessly transmitting power to the wireless power receiver; And a control unit for controlling at least one of the light irradiation unit and the heat radiation unit and the power transmission unit.

For example, the power transmitter may include a wireless power transmitter that provides power to the wireless power receiver mounted in the charging area; And a power driver for driving the wireless power transmitter in response to a first drive control signal output from the controller.

For example, the light irradiation unit may include a light source that emits the light; An optical driver for driving the light source in response to a second drive control signal output from the controller; And a reflector that reflects the light to the wireless power receiver.

For example, the reflector may include a planar mirror that reflects the light to a second area opposite to the first area of the wireless power receiver that faces the charged area. Alternatively, the reflection unit may include: an accommodation unit that accommodates the wireless power receiver and the power transmission unit; And a cylindrical mirror disposed on an inner surface of the receiving portion and reflecting the light to the wireless power receiver.

For example, the control unit may count the amount of the light irradiated to the wireless power receiver for a predetermined time, and may generate the second driving control signal according to the counted result.

For example, the heat dissipation unit may include a heat dissipation fan; And a heat dissipation driver for driving the heat dissipation fan in response to a third drive control signal output from the controller. The heat dissipation unit may further include a temperature measurement unit for measuring a surface temperature of the charged area, and the control unit may generate the second and third drive control signals according to the temperature measured by the temperature measurement unit.

A method of sterilizing, radiating and treating a wireless power receiver according to an embodiment of the present invention and a wireless power transmission device performing the method can sanitize viruses and germs present in a wireless power receiver to sanitize the wireless power receiver, It is possible to minimize the heat generation due to wireless charging by spreading the heat accumulated in at least one of the areas by the heat dissipating fan to the surrounding area and to reduce the heat generation effect of the ultraviolet wavelength band according to the wind speed of the heat dissipating fan. And it does not require any additional time for sterilization or heat dissipation by performing sterilization and heat dissipation during the charging time of the wireless power receiver so that each part can be modularized and individually controlled, To minimize the design constraints of the device, All.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a better understanding of the present disclosure, provide embodiments of the present disclosure in conjunction with the detailed description. It is to be noted, however, that the technical features of the present disclosure are not limited to the specific drawings, and the features disclosed in the drawings may be combined with each other to constitute a new embodiment.
1 is a flowchart illustrating a method of sterilizing a wireless power receiver according to an embodiment.
2 is a state transition diagram for explaining a wireless power transmission procedure defined in the WPC standard.
3 is a state transition diagram for explaining a wireless power transmission procedure defined in the PMA standard;
4 is a flowchart for explaining a heat dissipation method of a wireless power receiver according to another embodiment.
5 is a flowchart illustrating a method of processing a wireless power receiver according to another embodiment.
6 is a block diagram of a wireless power transmission apparatus according to an embodiment.
7 shows a block diagram according to one embodiment of a wireless power transmitter.
8 is a block diagram of a wireless power receiver capable of receiving power wirelessly from the wireless power transmitter shown in FIG.
Fig. 9 schematically shows a cross-sectional shape of an embodiment of the wireless power transmission apparatus shown in Fig.
Fig. 10 schematically shows a perspective view of another embodiment of the wireless power transmission apparatus shown in Fig.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An apparatus disclosed in the following embodiments will be described in detail with reference to the drawings. The terms used in the following examples are used only to illustrate a specific example and are not limited thereto.

For example, terms including ordinals such as "first" and "second" may be used to describe various components, but the components are not limited by the terms. The terms are used to distinguish one component from another.

It is to be understood that the "and / or" disclosed in the following embodiments include any and all possible combinations of one or more of the listed related items.

The terms "comprising", "having", "having", or "having" and the like, which are disclosed in the following embodiments, mean that a constituent element can be implanted unless otherwise specifically stated, But should be understood to include other components as well.

As used in the description of the embodiments disclosed in the following embodiments and in the claims, the singular expression " above " may be understood to include plural representations unless the context clearly dictates otherwise.

In the following description of the embodiments, an apparatus for transmitting wireless power on a wireless power system will be referred to as a " wireless power transmitter " for the sake of explanation, the entire apparatus including a wireless power transmitter, Quot; transmission device ". However, terms such as a wireless power transmitter, a transmitter, a transmitter, a transmitter, a wireless power transmitter, and the like may be used interchangeably as the same term as a wireless power transmitter.

In addition, an apparatus for receiving power transmitted from a wireless power transmitter included in a wireless power transmission apparatus wirelessly is referred to as a " wireless power receiver ". However, terms such as a wireless power receiving apparatus, a wireless power receiving apparatus, a receiver, a receiving apparatus, a receiving apparatus, and the like may be used interchangeably as the same term as a wireless power receiver.

A wireless power receiver according to an embodiment may receive wireless power from two or more wireless power transmitters at the same time, and the wireless power transmitter may simultaneously transmit wireless power to two or more wireless power receivers.

The wireless power transmitter according to the embodiment charges a wireless power receiver using an electromagnetic induction principle in which a magnetic field is generated in a power transmitting terminal coil (hereinafter referred to as a transmitting coil), and electricity is induced in a receiving terminal coil due to the magnetic field. Wireless power transmitters may employ a variety of electroluminescent transmission standards based on electromagnetic induction. Here, the wireless power receiver and the wireless power transmitter may include an electromagnetic induction wireless charging technique defined by Wireless Power Consortium (WPC) and Power Matters Alliance (PMA), which are wireless charging technology standards organizations.

Alternatively, the wireless power transmitter according to the embodiment may transmit power using a self-resonant method or a short wavelength radio frequency with a wireless power receiver. As such, embodiments are not limited to any particular energy delivery scheme from a wireless power transmitter to a wireless power receiver.

The wireless power receiver according to the embodiment may be a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a PDA (Personal Digital Assistants), a PMP (Portable Multimedia Player) , A portable electronic device such as an electric toothbrush, an electronic tag, a lighting device, a remote control, a fishing rod, and a smart watch, but the present invention is not limited thereto. It is enough.

Hereinafter, a method for sterilizing a wireless power receiver in a wireless power transmission apparatus according to an embodiment will be described with reference to the accompanying drawings.

1 is a flow chart illustrating a method 100 of sterilizing a wireless power receiver according to one embodiment. The method 100 of sterilizing a wireless power receiver shown in FIG. 1 may be performed in a wireless power transmission device.

Referring to FIG. 1, when power is wirelessly transmitted from a wireless power transmitter included in a wireless power transmission apparatus to a wireless power receiver, the wireless power receiver irradiates light in an ultraviolet wavelength band (operations 110 through 140). This will be described in detail as follows.

It is determined whether the wireless power receiver is seated in the charging area of the wireless power transmission apparatus (step 110). In general, a user wishing to charge the wireless power receiver can place the wireless power receiver in the charging area of the wireless power transmission device.

If it is determined that the wireless power receiver is located in the charging area of the wireless power transmission apparatus, it is determined whether power is transmitted from the wireless power transmitter to the wireless power receiver wirelessly (operation 120).

 For example, whether the wireless power receiver is seated in the charging area depends on the change in the sensed current in the wireless power transmitter in accordance with the analog ping signal transmitted by the wireless power transmitting device in accordance with the WPC / PMA standard supporting the electromagnetic induction method As shown in FIG. In another example, whether the wireless power receiver is seated in the charging region may be determined based on changes in the current sensed at the wireless power transmitter in accordance with the A4WP standard Short Beacon signal supporting electromagnetic resonance mode.

The determination as to whether or not the wireless power is being transmitted to the wireless power receiver is performed according to a WPC / PMA standard supporting an electromagnetic induction method, which will be described later, in accordance with a digital strength signal transmitted by the wireless power transmitter, Is received and whether a power transfer to the corresponding wireless power receiver is determined based on the signal strength indication and transitioned to a power transfer phase. In another example, the determination of whether wireless power is being transmitted to a wireless power receiver may be based on the assumption that the wireless power transmitter transmits a long beacon signal defined in the A4WP standard, It may be based on whether it has been received from the receiver and transited to the power transfer phase.

Hereinafter, a wireless power transmission procedure between a wireless power transmitter that can be included in the wireless power transmission apparatus according to the embodiment and a wireless power receiver that can be installed in the wireless power transmission apparatus will be described with reference to the accompanying drawings.

2 is a state transition diagram for explaining a wireless power transmission procedure defined in the WPC standard.

Referring to FIG. 2, power transmission from a wireless power transmitter to a wireless power receiver in accordance with the WPC standard is largely divided into a selection phase 30, a ping phase 32, an identification and configuration phase , 34, and a power transfer phase (36).

The selection step 30 may be a phase transition when a specific error or a specific event is detected while initiating a power transmission or maintaining a power transmission. Further, in a selection step 30, the wireless power transmitter (or wireless power transmission device) may monitor whether an object is present on the interface surface. If the wireless power transmitter senses that an object has been placed on the interface surface, it can transition to the ping step 32 (S1). In the selection step 30, the wireless power transmitter transmits an analog ping signal of a very short pulse and can detect whether an object exists in the active area of the interface surface based on the current change of the transmission coil have.

When the wireless power transmitter senses an object in the ping stage 32, it activates the wireless power receiver and sends a digital ping to identify whether the wireless power receiver is a WC standard compliant receiver. If the wireless power transmitter does not receive a response signal (e. G., A signal strength indicator) for the digital ping from the wireless power receiver in step 32, it may transition back to the selection step 30 (S2). The wireless power transmitter may also transition to the selection step 10 upon receipt of a signal indicating that the power transmission is complete from the wireless power receiver (hereinafter, a 'charge completion signal') in step 32, .

Upon completion of the ping step 32, the wireless power transmitter may transition to an identification and configuration step 34 for collecting identification of the wireless power receiver and configuration and status information of the wireless power receiver (S4)

In the identifying and configuring step 34, the wireless power transmitter may determine whether an unexpected packet is received, a desired packet is received for a predefined period of time (time out), a packet transmission error, If no transfer contract has been established (no power transfer contract), the transition to the selection step 10 can be made (S5).

Once the identification and configuration for the wireless power receiver is complete, the wireless power transmitter may transition to a power transfer step 36 that transmits wireless power (S6).

In the power transfer step 36, the wireless power transmitter may receive an unexpected packet, a desired packet is not received for a predefined time (time out), a violation of a predetermined power transfer contract occurs (power transfer contract violation), and when the charging is completed, the selection step 10 can be performed (S7).

Further, in the power transfer step 36, the wireless power transmitter may transition to the identification and configuration step 34 (S8) if it is necessary to reconfigure the power transfer contract according to the status change of the wireless power transmitter.

The above-described power transmission contract can be established based on the state and property information of the wireless power transmitter and the wireless power receiver. For example, the status information of the wireless power transmitter may include information on the maximum amount of transmittable power, information on the maximum number of acceptable wireless power receivers, and the status information on the wireless power receiver may include information on the requested power . ≪ / RTI >

3 is a state transition diagram for explaining a wireless power transmission procedure defined in the PMA standard;

Referring to FIG. 3, power transmission from a wireless power transmitter to a wireless power receiver according to the PMA standard is largely divided into a standby phase 50, a digital ping phase 52, an identification phase 54 , A power transfer phase (56), and an end of charge phase (58).

The waiting step 50 may be a step of performing a procedure for identifying a wireless power receiver to which power is transmitted or transitioned if a specific error or a specific event is detected while maintaining power transmission. Also, at the standby step 50, the wireless power transmitter may monitor whether an object is present on the Charging Surface of the charging area. If the wireless power transmitter senses that an object has been placed on the surface of the charging area, or if an RXID retry is in progress, the digital powering step 52 may proceed (S31). Here, RXID is a unique identifier assigned to a PMA compatible receiver. At the standby step 50, the wireless power transmitter transmits a very short pulse of analog ping and is fed to the active area of the interface surface (e.g., the charging bed) based on the current change of the transmitting coil It is possible to detect whether or not an object exists.

The wireless power transmitter transited to the digital ping stage 52 sends a digital ting signal to identify whether the sensed object is a PMA compatible wireless power receiver. When sufficient power is supplied to the wireless power receiver by the digital dip signal transmitted by the wireless power transmitter, the wireless power receiver may modulate the received digital dip signal according to the PMA communication protocol and transmit a predetermined response signal to the wireless power transmitter . Here, the response signal may include a signal strength indicator indicating the strength of the power received at the wireless power receiver. At the digital ping stage 52, the wireless power receiver may transition to the identification step 54 if a valid response signal is received (S32).

If the response signal is not received or is not a PMA compliant wireless power receiver (i.e., FOD (Foreign Object Detection)), then the wireless power transmitter is in a waiting step 50, (S33). As an example, a foreign object (FO) may be a metallic object including coins, keys, and the like.

In the identifying step 54, if the wireless power transmitter fails to identify the wireless power receiver, or if the receiver identification procedure must be performed again and if the receiver identification procedure has not been completed for a predefined period of time, (S34).

If the wireless power transmitter succeeds in identifying the wireless power receiver, it may transition to power transfer step 56 in identification step 54 and initiate charging (S35).

In a power transfer step 56, the wireless power transmitter transmits an acknowledgment signal to the wireless power transmitter in a waiting step 50 (step 50) if the desired signal is not received within a predetermined time (Time Out), an FO is detected, or the voltage of the transmitting coil exceeds a pre- (S36). ≪ / RTI >

Further, in the power transmission step 56, when the temperature sensed by the internally provided temperature sensor exceeds a predetermined reference value, the wireless power transmitter may transition to the charging completion step 58 (S37).

In the charge complete step 58, the wireless power transmitter may transition to the idle state 50 (S39) if it is confirmed that the wireless power receiver has been removed from the charging surface.

If the measured temperature drops below the reference value in the over temperature state, the wireless power transmitter may transition from the charging completion step 58 to the digital charging step 52 (S40).

In the digital dipping step 52 or the power transmitting step 56, the wireless power transmitter may transition to the charging completion step 58 when an End Of Charge (EOC) request is received from the wireless power receiver (S38 and S41) .

As described above, power may be transmitted from the wireless power transmitter of the wireless power transmission device to the wireless power receiver in accordance with the WPC standard or the PMA standard, but embodiments are not limited in this regard. That is, the method of sterilizing a wireless power receiver according to an embodiment is not limited to a particular method of wirelessly transmitting power from a wireless power transmitter to a wireless power receiver.

Referring again to FIG. 1, when power is wirelessly transmitted from a wireless power transmitter to a wireless power receiver, ultraviolet light is irradiated to the wireless power receiver (operation 140). Here, the ultraviolet light can be irradiated to a region requiring sterilization in the wireless power receiver. Here, the area requiring sterilization may be an area which is frequently touched by the user in the mobile phone when the wireless power receiver is a mobile phone, and is likely to be a region where bacteria are present, for example, a screen.

In addition, in the state where the wireless power receiver is seated in the charging area, when sterilization of the wireless power receiver is required, light may be irradiated to the wireless power receiver (130 and 140). That is, as shown in FIG. 1, it is possible to determine whether sterilization is required by a user without transmitting power wirelessly to the wireless power receiver. However, regardless of whether the wireless power receiver transmits power wirelessly It may be determined whether sterilization is required only if the wireless power receiver is placed in the charging area (operation 130). If sterilization is requested by the user, the process proceeds to operation 140 and the light can be irradiated to the wireless power receiver.

Optionally, step 130 may be omitted.

After operation 140, it is determined whether the wireless transmission of power from the wireless power transmitter of the wireless power transmission apparatus to the wireless power receiver is terminated (operation 150). Wireless transmission of power from the wireless power transmitter to the wireless power receiver when the wireless power receiver is fully charged by the power transmitted from the wireless power transmitter or when the wireless power transmission device receives the wireless charging stop message from the wireless power receiver Can be terminated. For example, if the wireless power receiver is overheated, the wireless power receiver may send a wireless charge stop message to the wireless power transmission device before it is fully buffered.

If it is determined that the wireless transmission of power from the wireless power transmitter of the wireless power transmission apparatus to the wireless power receiver is terminated, the irradiation of light to the wireless power receiver is stopped (operation 170).

In addition, the method of disinfecting the wireless power receiver according to the embodiment may further include the 160th step. In this case, it is determined whether the light has been irradiated to the wireless power receiver for a predetermined period of time while the wireless power transmission to the wireless power receiver is continued without being terminated (operation 160). If it is determined that the light has been irradiated to the wireless power receiver for a predetermined period of time, the scanning of light to the wireless power receiver can be stopped. Here, the predetermined time may be the time required to remove 70% or more of the bacteria of the wireless power receiver, but the embodiment is not limited thereto. In addition, the predetermined time may be determined beforehand according to the intensity of the light before performing the method of sterilizing the wireless power receiver shown in FIG. 1 or before performing the step 160.

Thus, even when power is continuously supplied from the wireless power transmitter to the wireless power receiver wirelessly, if it is determined that 70% or more of the light is removed, the irradiation of light can be stopped.

Hereinafter, a method of radiating a wireless power receiver in a wireless power transmission apparatus according to an embodiment will be described with reference to the accompanying drawings.

4 is a flowchart for explaining a heat dissipation method 200 of a wireless power receiver according to another embodiment. The heat dissipation method 200 of the wireless power receiver shown in FIG. 4 may be performed in a wireless power transmission device.

4, when power is transmitted wirelessly from a wireless power transmitter included in a wireless power transmission apparatus to a wireless power receiver, if the surface temperature of the charging region on which the wireless power receiver is placed is equal to or higher than a predetermined temperature, To cool the heat of at least one of the wireless power receiver or the charging area (operations 210 through 250). This will be described in detail as follows.

It is determined whether the wireless power receiver is seated in the charging region of the wireless power transmission apparatus (Step 210). Since this is the same as step 110 shown in FIG. 1, duplicate description will be omitted.

If it is determined that the wireless power receiver is located in the charging area of the wireless power transmission apparatus, it is determined whether power is wirelessly transmitted from the wireless power transmitter of the wireless power transmission apparatus to the wireless power receiver in operation 220. Since this is the same as operation 120 shown in FIG. 1, duplicate description will be omitted.

When power is not being wirelessly transmitted from the wireless power transmitter of the wireless power transmission apparatus to the wireless power receiver while the wireless power receiver is seated in the charging area of the wireless power transmission apparatus, (Operation 230). If it is determined that the heat dissipation of the wireless power receiver is required, the operation of the heat dissipation fan is operated to cool the heat of at least one of the wireless power receiver or the charging area.

Generally, since heat is generated during wireless charging, heat dissipation is performed during wireless charging, but the embodiment is not limited thereto. That is, when power is not being wirelessly transmitted to the wireless power receiver, it can be determined whether heat dissipation is required. Also, when it is determined that the wireless power receiver is seated in the charging area, it may be determined whether heat dissipation is required regardless of whether the power is transmitted wirelessly to the wireless power receiver.

In operation 240, it is determined that the surface temperature of the charged region is higher than a predetermined temperature when it is determined that the power is transmitted from the wireless power transmitter of the wireless power transmission apparatus to the wireless power receiver.

If it is determined that the surface temperature of the charged region is smaller than the predetermined temperature, the process proceeds to operation 220 and the operation 220 may be performed again. However, if it is determined that the surface temperature of the charged area is equal to or higher than the predetermined temperature, the operation proceeds to operation 250 wherein the heat-dissipating fan is operated to heat at least one of the wireless power receiver or the charging area.

As described above, when power is wirelessly transmitted to the wireless power receiver, step 250 may be performed only when the temperature of the surface of the charged area becomes higher than a predetermined temperature, rather than performing step 250 unconditionally. This is because, if the temperature is lower than the predetermined temperature, the gain for releasing heat is reduced. Here, the predetermined temperature may be 45 DEG C, but the embodiment is not limited to this specific temperature.

After operation 250, it is determined whether wireless transmission of power from the wireless power transmitter of the wireless power transmission apparatus to the wireless power receiver is terminated (operation 260). Since operation 260 is the same as operation 150 shown in FIG. 1, redundant description will be omitted.

If it is determined that the wireless transmission of power from the wireless power transmitter to the wireless power receiver is terminated, the operation of the heat dissipation fan is stopped (operation 270).

Hereinafter, a method 300 of processing a wireless power receiver according to yet another embodiment will be described with reference to the accompanying drawings. Here, the processing method of the wireless power receiver means a method including a combination of a method of sterilizing the wireless power receiver illustrated in FIG. 1 and a method of radiating at least one of the wireless power receiver or the charging area illustrated in FIG. can do.

5 is a flowchart for explaining a processing method 300 of a wireless power receiver according to yet another embodiment. The method 300 shown in Figure 5 may be performed in a wireless power transmission device.

When the wireless power receiver is seated in the charging area and the power is wirelessly transmitted to the wireless power receiver, the heat-dissipating fan is operated to cool at least one of the wireless power receiver or the charging area and the light of the ultraviolet wavelength band (Steps 310 to 322). This will be described in detail as follows.

First, it is determined whether the wireless power receiver is seated in the charging area of the wireless power transmission apparatus (step 310). Since step 310 is the same as step 110 shown in FIG. 1, duplicated description will be omitted.

If it is determined that the wireless power receiver is settled in the charging area, it is determined whether power is wirelessly transmitted from the wireless power transmitter included in the wireless power transmission apparatus to the wireless power receiver mounted on the wireless power transmission apparatus (Step 312). Since step 312 is the same as step 120 shown in FIG. 1, a duplicate description thereof will be omitted.

If it is determined that the power is transmitted to the wireless power receiver, it is determined whether the surface temperature of the charged region of the wireless power transmission apparatus is equal to or higher than a predetermined temperature (operation 320). Since operation 320 is the same as operation 240 of FIG. 4, duplicated description will be omitted.

However, when it is determined that power is not transmitted to the wireless power receiver, it is determined whether disinfection of the wireless power receiver is required (Step 314). If it is determined that sterilization of the wireless power receiver is required, the ultraviolet wavelength band light is irradiated to the wireless power receiver (Step 322). Steps 314 and 322 are the same as steps 130 and 140 shown in FIG. 1, respectively, and thus duplicate descriptions are omitted. For example, the disinfection request of the wireless power receiver may be determined depending on whether the disinfection request button (not shown) provided on one side of the wireless power transmission apparatus is operated, but the present invention is not limited thereto. It may be determined that sterilization is automatically required.

If it is determined that sterilization of the wireless power receiver is not required, it is determined whether heat radiation of at least one of the wireless power receiver or the charging area is required (Step 316). If it is determined that heat radiation is required, the heat radiating fan is operated to cool at least one of the wireless power receiver or the charging area (step 318). Since steps 316 and 318 are the same as steps 230 and 250 shown in FIG. 4, duplicate descriptions will be omitted. For example, whether or not the heat dissipation is required may be determined according to whether the heat dissipation request button (not shown) provided on one side of the wireless power transmission apparatus is operated, but this is only one embodiment. According to another embodiment , It may be determined that heat radiation is automatically required when the surface temperature of the charging area and / or the wireless power receiver is higher than a predetermined reference value.

In the case of FIG. 5, if the step 314 is not satisfied, the process proceeds to step 316, but the embodiment is not limited thereto. That is, according to another embodiment, if the step 316 is satisfied, the process may proceed to step 314, unlike the case shown in FIG. In other words, any of steps 314 and 316 may be performed first.

In the case of FIG. 5, if the step 314 is not satisfied, the step 316 is shown to proceed, but the embodiment is not limited thereto. That is, according to another embodiment, if the step 314 is not satisfied as shown in FIG. 5, as shown in FIG. 1, the wireless power receiver proceeds to step 312, It may be continuously judged whether sterilization is required.

Also, in the case of FIG. 5, irradiation of light to a wireless power receiver is shown only when sterilization is required, but the embodiment is not limited thereto. That is, according to another embodiment, unlike the case shown in FIG. 5, even if sterilization is not required, heat dissipation is required (that is, the step 316 is satisfied) Satisfaction), step 322 may be performed.

In the case of FIG. 5, when the surface temperature of the charged region is not equal to or higher than the predetermined temperature, the process proceeds to operation 312, but the embodiment is not limited thereto. 5, when the surface temperature of the charged region is lower than the predetermined temperature, the process proceeds to operation 322, and the light is irradiated to the wireless power receiver It is possible.

After step 318 or 322, it is determined whether the wireless transmission of power to the wireless power receiver is terminated (step 324). Step 324 is the same as Step 150 shown in FIG. 1, so duplicate description will be omitted.

If it is determined that the wireless transmission of power to the wireless power receiver has been terminated (e. G., Charging is determined to be complete), illumination of the wireless power receiver may be stopped and the heat dissipation fan may be deactivated ).

However, when the wireless transmission of power to the wireless power receiver is not terminated and the power is continuously supplied, it is determined whether the wireless power receiver has irradiated the light for a predetermined period of time (operation 326). If it is determined that the light is irradiated to the wireless power receiver for a predetermined period of time, the process proceeds to step 328 to stop the irradiation of the light and stop the operation of the heat radiating fan. Since operation 326 is the same as operation 160 shown in FIG. 1, duplicate description will be omitted. For example, a radiator and / or a timer input unit (not shown) may be further provided on one side of the wireless power transmission apparatus to control irradiation of light, and the radiator fan and / The wireless power transmission apparatus automatically activates the timer when the wireless power receiver is seated in the charging area or the wireless power transmission is started, And / or ultraviolet light may be irradiated.

However, the embodiment is not limited to this. That is, according to another embodiment, in contrast to FIG. 5, step 326 may be omitted. In this case, step 328 may be performed only when the wireless power transmission to the wireless power receiver is terminated.

5, when it is determined that the wireless power transmission to the wireless power receiver is not terminated but the wireless power receiver has examined the light for a predetermined period of time, only the irradiation of the light is stopped and the operation of the heat- . In this case, the operation of the heat radiating fan can be stopped only when the wireless transmission of the power to the wireless power receiver is terminated.

Hereinafter, the configuration and operation of the wireless power transmission apparatus according to the embodiment will be described with reference to the accompanying drawings. The method of disinfecting the wireless power receiver shown in FIG. 1, the method of dissipating the wireless power receiver shown in FIG. 4, and the method of processing the wireless power receiver shown in FIG. 5 are the same as those of the wireless power transmitting apparatus 400 .

6 is a block diagram of a wireless power transmission apparatus 400 according to an embodiment.

The wireless power transmission apparatus 400 shown in FIG. 6 may include a light irradiation unit 410, a power transmission unit 420, a heat dissipation unit 430, and a control unit 440. In Figure 6, the wireless power receiver 500 is not a component of the wireless power transmission apparatus 400, but is shown together for the sake of clarity.

First, the power transmitter 420 provides a place where the wireless power receiver 500 is seated, for example, a charging area, and wirelessly transmits power to the wireless power receiver.

For example, as shown in FIG. 6, the power transmitter 420 may include a power driver 422 and a wireless power transmitter 424. The wireless power transmitter 424 serves to power the wireless power receiver 500 that is seated in the charging area.

The wireless power transmitter 424 may wirelessly transmit power to the wireless power receiver 500 in various manners. For example, the wireless power transmitter 424 can wirelessly transmit power to the wireless power receiver 500 using a magnetic induction method, a self-resonant method, or a power transmission method using a short wavelength radio frequency. However, the embodiment is not limited to any particular way of wirelessly transmitting power from the wireless power transmitter 424 to the wireless power receiver 500.

Hereinafter, the configuration and operation of a wireless power transmitter 424 that wirelessly transmits power by a magnetic induction method and a wireless power receiver 500 that receives power wirelessly will be described with reference to the accompanying drawings, The embodiment is not limited to this.

FIG. 7 shows a block diagram according to one embodiment of a wireless power transmitter 424. For ease of understanding, the solid line represents the movement of the power (or power signal), and the dotted line represents the movement of the control signal and status signal in addition to the power.

7, the wireless power transmitter 424 includes a power supply unit 60, a power conversion unit 62, a power transmission unit 64, a transmission coil 66, a transmission control unit 68, and a demodulation unit 70 . Each component of such a wireless power transmitter 424 is not necessarily an essential configuration, and the wireless power transmitter 424 may comprise more or fewer components than the components shown in FIG.

The power supply unit 60 serves to supply power, and may correspond to a battery built in the wireless power transmitter 424 or may be an external power supply, and the embodiment is not limited to the form of the power supply unit 60.

The power conversion unit 62 may convert the power supplied from the power supply unit 60 to a predetermined power and output the converted result to the power transmission unit 64 as a power signal. To this end, the power conversion section 62 may include a level conversion section 62A, a power sensor 62B, and an amplifier 62C.

The level converting section 62A converts the level of the power supplied from the power supply section 60 and outputs a signal having the converted level as a power signal. For example, the level converting portion 62A may include a DC / DC converter such as a buck converter or the like, but the embodiment is not limited to the configuration of the level converting portion 62A . The DC / DC converter may perform a function of converting DC power supplied from the power supply unit 60 into DC power having a predetermined intensity according to a control signal generated from the transmission control unit 68.

The power sensor 62B measures the voltage / current of the power signal output with the level converted by the level converter 62A. Specifically, the power sensor 62B can measure the voltage / current of the DC power signal output from the level converting section 62A and provide it to the transmission control section 68. [

The amplifier 62C can amplify (or adjust) the strength of the power signal having the level converted by the level converting section 62A according to the control signal generated from the transmission control section 68. [ For example, the transmission control unit 68 may receive a power control signal (or a feedback signal) transmitted from the radio power receiver 500 shown in FIG. 8, which will be described later, and provided via the demodulation unit 70, The gain of the amplifier 62C can be adjusted according to the received power control signal.

The transmission control section 68 can control at least one of the power supply section 60 and the amplifier 62C based on the voltage / current value measured by the power sensor 62B. That is, the transmission control section 68 adaptively blocks supply of power from the power supply section 60 to the level converting section 62A, supplies the power signal to the amplifier 62C, or outputs the power signal from the amplifier 62C Can be blocked. To this end, power supply provided from the power supply unit 60 is blocked at one side of the power conversion unit 62, the power supply to the amplifier 62C is blocked, or power supply from the amplifier 62C A power cut-off circuit may be further arranged to block the power signal from being supplied to the power transfer unit 64. [

The power driver 422 shown in FIG. 6 drives the wireless power transmitter 424 in response to the first drive control signal C1 output from the controller 440. However, the embodiment is not limited to this. 6, instead of the power driver 422 and the wireless power transmitter 424 being separate components, the power driver 422 and the wireless power transmitter 424 may be integrated Lt; / RTI > In this case, the transmission control unit 68 may serve as the power driver 422. In other words, the transmission control unit 68 may control each unit shown in FIG. 7 to transmit the wireless power to the wireless power receiver 500 in response to the first driving control signal C1 generated from the controller 440. [

The power transmission unit 64 transmits the power signal output from the power conversion unit 62 to the wireless power receiver 500. To this end, the power transmission unit 64 may include a frequency driver 64A and a coil selector 64B. 7, the transmission coil stage 66, transmission control section 68 and demodulation section 70 are shown as being not components of the power transmission section 64, but the embodiment is not limited to this. That is, the transmission control section 68, the demodulation section 70, and the transmission code stage 66 may also belong to the components of the power transmission section 64.

The frequency driver 64A generates an AC power signal in which an AC component having a specific frequency is inserted into the DC power signal output from the power converter 62 and transmits the AC power signal to the transmission coil 66 . At this time, the frequencies of the AC power signals transmitted to the plurality of transmission coils included in the transmission coil stage 66 may be the same or different from each other.

The coil selector 64B may receive an AC power signal having a specific frequency from the frequency driver 64A and may transmit the AC power signal to a transmission coil selected from a plurality of transmission coils included in the transmission coil 66. [ In response to the predetermined control signal output from the transmission control unit 68, the coil selector 66 selects the corresponding transmission coil among the transmission coils included in the transmission coil 66 and transmits the AC power signal to the selected transmission coil .

The transmission coil 66 may include at least one transmission coil 66-1, 66-2, ..., 66-N and may transmit the AC power signal output from the coil selector 64B to the corresponding transmission And can be transmitted wirelessly through a coil. Here, N may be a positive integer of 1 or more.

In order to select a 'corresponding transmission coil' among the plurality of transmission coils, the coil selection unit 66 may be implemented as a switch or a far-away plexer. Here, the 'corresponding transmission coil' may refer to a transmission coil having a state capable of being coupled to a reception coil of the wireless power receiver 500 qualified to receive power wirelessly by an electromagnetic field. According to an embodiment, the transmission control unit 68 may be configured to transmit a transmission coil to be used for wireless power transmission among a plurality of transmission coils, based on a signal strength indicator received corresponding to a digital ping signal transmitted for each transmission coil, .

The demodulator 70 demodulates the detected feedback signal and outputs the demodulated feedback signal to the transmission controller 68 when the feedback signal is transmitted from the wireless power receiver 500 and through the transmission coil 66. Here, the demodulated feedback signal may include a signal control indicator, an error correction (EC) indicator for power control during the wireless power transmission, an end of charge (EOC) indicator, an overvoltage / overcurrent indicator, And various status information for identifying the status of the wireless power receiver 500 may be included.

Also, according to an embodiment, the feedback signal may include information about the state of the charging process of the wireless power receiver 500 or information about the charging result (e.g., whether the charging of the wireless power receiver is complete, Information).

The demodulation unit 70 can identify which of the plurality of transmission coils 66-1 to 66-N included in the transmission coil 66 is a signal that is demodulated, And may provide the transmission control unit 68 with a predetermined transmission coil identifier corresponding to the transmission coil.

The transmission control section 68 outputs a control signal for controlling the frequency driving section 64A in accordance with the feedback signal demodulated by the demodulation section 70. [ The frequency driver 64A can change the frequency of the power signal to be transmitted to the transmission coil 66 in response to the control signal generated from the transmission controller 68. [ For example, when the wireless power transmitter 424 and the wireless power receiver 500 perform in-band communication, the transmission control unit 68 transmits a predetermined control signal through the frequency modulation to the wireless power receiver 500 ).

As described above, the wireless power transmitter 424 is capable of transmitting wireless power using the transmitting coil 66 and also exchanging various information with the wireless power receiver 500 via the transmitting coil 66 . However, the embodiment is not limited to this. That is, according to another embodiment, the wireless power transmitter 424 has a separate coil corresponding to each transmission coil of the transmission coil 66, and uses a separate coil to perform in-band communication with the wireless power receiver . ≪ / RTI >

Alternatively, the wireless power transmitter 242 may exchange information with the receiver using a separate channel rather than a feedback signal via the transmission coil 66. [ That is, the wireless power transmitter 242 may communicate with the receiver using a separate communication means other than the transmission coil 66 for wireless power transmission, for example, Bluetooth, NFC, Zigbee, etc. have. In this case, the communication for information exchange with the receiver may use a frequency band different from the frequency for the radio power transmission. If such a separate communication channel is used, the demodulation unit 70 may be omitted.

FIG. 8 shows a block diagram of a wireless power receiver 500 that can receive power wirelessly from the wireless power transmitter 424 shown in FIG.

8, the wireless power receiver 500 includes a receiving coil 80, a rectifying unit 82, a voltage controlling unit 84, a receiving controlling unit 86, a modulating unit 88, and a charging target (or load) 90). For ease of understanding, the solid line represents the movement of the power (or power signal), and the dotted line represents the movement of the control signal and status signal in addition to the power.

The receiving coil 80 may include a secondary coil that can form a resonant circuit. In order to enhance the power transmission efficiency, capacitors may be connected in series or in parallel to the receiving coil 80 selectively. The receiving coil 80 is connected to the transmitting coil 66 by a corresponding transmitting coil and by an electromagnetic field when transmitting power from the wireless power transmitter 424 to the wireless power receiver 500, Can be combined.

The rectifying unit 82 performs full-wave rectification of an AC-type power signal inputted through the receiving coil 80 and outputs the result of the full-wave rectification to the voltage controller 84.

The voltage control unit 84 converts the full-wave rectified result output from the rectifying unit 82 into a DC type power signal at a level that allows the charging object 90 to be charged. The voltage control unit 84 may adjust the voltage magnitude or the amount of current of the DC power signal in accordance with the voltage level requested by the charging object 90 or in accordance with the state of the charging object 90. [ For example, the voltage control unit 84 may be a DC / DC converter, but the embodiment is not limited thereto.

The reception control unit 86 monitors the charging object 90 to control the charging process and operates the modulation unit 88 to communicate with the wireless power transmitter 424. [ In addition, the reception control unit 86 can monitor and control an incidental operation environment necessary for performing a normal operation of the wireless power receiver 500. [

The reception control section 86 controls the rectification section 82 or the voltage control section 84 so that no more power is supplied to the charging object 90 when charging of the charging object 90 is completed, 500 can be charged in a no-load state. At this time, the reception control unit 86 may transmit information about completion of charging, which indicates that the charging is completed, to the wireless power transmitter 424 through the modulation unit 88 in a feedback signal.

The reception control unit 86 generates a feedback signal including information on at least one of charging completion, charging rate, or charging time of the charging object 90, and outputs the generated feedback signal to the modulation unit 88 can do. Thus, the feedback signal may contain information regarding the state of the charging process or the charging result of the wireless power receiver 500.

The modulator 88 typically includes a resistor and a capacitor and is configured to modulate a feedback signal generated at the reception controller 86 and transmitted to the wireless power transmitter 424 through the reception coil 80 .

The wireless power transmitter 424 and the wireless power receiver 500 shown in Figures 7 and 8 respectively are only embodiments of the wireless power transmitter 424 and the wireless power receiver 500 shown in Figure 6, The illustrated wireless power transmitter 424 and wireless power receiver 500 are not limited to the configurations of the wireless power transmitter 424 and the wireless power receiver 500 shown in Figs.

Referring again to FIG. 6, the light irradiating unit 410 irradiates light in the ultraviolet wavelength band to the wireless power receiver 500. For example, the light irradiation unit 410 may include a light driving unit 412, a light source 414, and a reflection unit 416.

The light source 414 can emit light in the ultraviolet wavelength band.

The optical driver 412 drives the light source 414 in response to the second drive control signal C2 output from the controller 440.

The reflector 416 reflects the light emitted from the light source 414 to the wireless power receiver 500.

The control unit 440 controls the light irradiating unit 410 to count whether the light is irradiated to the wireless power receiver 500 for a predetermined time and generate the second driving control signal C2 according to the counted result.

The heat dissipation unit 430 may cool the heat of at least one of the wireless power receiver or the charging area. For example, the heat dissipation unit 430 may include a heat dissipation fan 434 and a heat dissipation drive unit 432. The heat-dissipating fan 434 is driven by the heat-dissipating driver 432 and serves to send wind to at least one of the wireless power receiver or the charging area. To this end, the heat-dissipating fan 434 may be disposed at a suitable place in the wireless power transmission device. The heat dissipation drive unit 432 can drive the heat dissipation fan 434 in response to the third drive control signal C3 output from the control unit 440. [

As described above, the heat dissipating unit 430 can cool the heat generated by the heat generated by the heat dissipating fan 434, but the heat can be cooled by a method other than wind.

The heat dissipation unit 430 may further include a temperature measurement unit 436. The temperature measuring unit 436 measures the surface temperature of the charged region and outputs the measured surface temperature to the control unit 440. The control unit 440 may generate the second and third drive control signals C2 and C3 according to the temperature measured by the temperature measuring unit 436. [

Alternatively, the surface temperature of the charged area may be provided from the wireless power receiver 500. In this case, the wireless power receiver 500 may itself measure the temperature of the charging area (or its own temperature) and transmit the measured temperature to the controller 440. For example, if the wireless power transmitter 424 and the wireless power receiver 500 are in accordance with the procedure defined in the WPC standard, as shown in FIG. 2, the temperature measured in the wireless power receiver 500 is the control error packet control error packet to the wireless power transmitter 424. In this case, the temperature measurement unit 436 may be omitted and the control unit 440 may generate the second and third drive control signals C2 and C3 in accordance with the measured temperature transmitted from the wireless power receiver 500 have.

The control unit 440 controls at least one of the light irradiation unit 410 and the heat radiation unit 430 and the power transmission unit 420.

The wireless power transmission apparatus 400 shown in FIG. 6 includes the wireless power receiver sterilization method 100 shown in FIG. 1, the wireless power receiver heat dissipation method 200 shown in FIG. 4, and the wireless power It is possible to perform the processing method 300 of the receiver. The following is a summary of this.

First, the controller 440 can know whether the wireless power receiver is seated in the charging area through the wireless power transmitter 424 (steps 110, 210 and 310). For example, the wireless power transmitter 424 senses an object in the zipping step 32 shown in FIG. 2 and identifies and configures in step 34 which is suitable for receiving the wirelessly transmitted power of the sensed object , And output the result to the control unit 440. [

In addition, the controller 440 can determine whether the power is transmitted to the wireless power receiver by radio and the transmission of the wireless power to the wireless power receiver is completed through the operation of the transmission controller 68 of the wireless power transmitter 424 120, 150, 220, 260, 312, and 324). 7, the transmission control unit 68 controls the overall operation of transmitting the power to the wireless power receiver 500 wirelessly. Therefore, the control unit 440 controls the transmission power of the wireless power to the wireless power receiver 500 through the transmission control unit 68, , 220, 260, 312, and 324 may be performed.

In addition, the user requesting at least one of sterilization and heat dissipation operates the control unit 440, so that the control unit 440 can perform steps 130, 230, 314, and 316.

In addition, the controller 440 may perform steps 240 and 320 through the temperature measured by the temperature measuring unit 436 or information on the temperature transmitted from the wireless power receiver 500.

The control unit 440 may also be configured to receive information from the wireless power transmitter 424, the temperature measured by the temperature measuring unit 436, or the temperature transmitted from the wireless power receiver 500, By controlling the light irradiation unit 410 and the heat radiation unit 430 by the second and third drive control signals C2 and C3 by generating the second and third drive control signals C2 and C3, , 160, 170, 250, 270, 318, 322, 326, and 328 may be performed.

If the wireless power transmission apparatus 400 shown in FIG. 6 performs the sterilizing method 100 of the wireless power receiver shown in FIG. 1, the heat dissipating unit 430 may be omitted. In addition, when the wireless power transmission apparatus 400 performs the heat dissipation method 200 of the wireless power receiver shown in FIG. 4, the light irradiation unit 410 may be omitted. 6, the wireless power transmission apparatus 400 includes both the light irradiation unit 410 and the heat dissipation unit 430, can do.

Hereinafter, embodiments of the above-described wireless power transmission apparatus 400 will be described with reference to the accompanying drawings.

FIG. 9 schematically illustrates a cross-sectional shape of an embodiment 400A of the wireless power transmission apparatus 400 shown in FIG.

The wireless power transmitter 424, the light sources 414A and 414B, the heat dissipating fan 434A and the plate mirror 416A shown in Fig. 9 correspond to the wireless power transmitter 424, the light source 414, The reflection portion 434, and the reflection portion 416, respectively.

The wireless power transmitter 424 may include a first printed circuit board 424A, a first shield member 424B and a transmit coil 424C.

The transmission coil 424C has the same function as each of the first to Nth transmission coils 66-1 to 66-N included in the transmission coil stage 66 shown in Fig. 7, It is omitted. The first shielding member 424B is disposed below the transmission coil 424C and the first printed circuit board 424A is disposed below the first shielding member 424B.

The upper portion of the first shielding member 424B attaches the transmission coil 424C using an adhesive. The first shielding member 424B is disposed under the transmission coil 424C so as to shield the magnetic field induced in the transmission coil 424C so that the magnetic field does not affect the electronic component.

Although not shown, the wireless power receiver 500 includes a receive coil disposed opposite the transmit coil 424C, a second shield member disposed on top of the receive coil, and a second shield member disposed on top of the second shield member. 2 printed circuit boards.

The receiving coil has the same function as that of the receiving coil 80 shown in Fig. 8, and therefore duplicate description will be omitted. The lower portion of the second shielding member attaches the receiving coil using an adhesive. The second shield member may be disposed above the receiving coil so as to shield the magnetic field induced in the receiving coil so that the magnetic field does not affect the electronic component.

Each of the first shielding member 424B and the second shielding member described above may be embodied as ferrite.

Such configurations are disclosed in U.S. Patent Application No. 61 / 932,258, filed January 28, 2014 by the same applicant, and the description thereof is omitted, but the same applies in the embodiments.

The touch screen may be disposed in the second area 504 opposite to the first area 502 when the receiving coil is positioned on the first area 502 facing the charging area in the wireless power receiver 500. [ The light in the ultraviolet wavelength band emitted from the light sources 414A and 414B is reflected by the plate mirror 416A serving as the reflector 416 and then transmitted to the second region 504 of the wireless power receiver 500 When examined, the touch screen of the wireless power receiver 500 can be sterilized by light in the ultraviolet wavelength band.

9, the light sources 414A and 414B are disposed on both sides of the transmitting coil 424C in the wireless power transmitter 424 and the plate mirror 416A is shown disposed on the top of the wireless power receiver 500 However, the embodiment is not limited to this. In addition, the reflecting portion 416 may have various mirror shapes in addition to the plate-like mirror 416A. That is, if the light emitted from the light sources 414A and 414B and then reflected by the plate mirror 416A can be irradiated to a desired area of the wireless power receiver 500, then the embodiment may be implemented with a specific location of the light sources 414A and 414B The specific position of the plate-shaped mirror 416A, and the specific shape of the mirror.

The radiating fan 434A is disposed above the plate-shaped mirror 416A and operates under the control of the controller 440 to cool at least one of the wireless power receiver 500 or the charging area. For this purpose, the heat dissipating fan 434A is illustrated as being disposed on the top of the plate-like mirror 416A, but the embodiment is not limited thereto. That is, if the heat of the wireless power receiver 500 or at least one of the charging areas can be cooled, the heat-dissipating fan 434A can be located in various places.

10 schematically illustrates a perspective view of another embodiment 400B of the wireless power transmission apparatus 400 shown in FIG.

10 includes a power transmitting unit 420A, light sources 414A and 414B, a heat radiating fan 434B, a cylindrical mirror 416B, a receiving unit 450, and an accommodating lid 452 . The power transmission unit 420A, the light sources 414A and 414B and the heat radiation fan 434B correspond to the power transmission unit 420, the light source 414 and the heat radiation fan 434 shown in FIG. Further, the accommodating portion 450 and the cylindrical mirror 416B correspond to the embodiment of the reflection portion 416 shown in Fig.

The receiving unit 450 serves to receive the wireless power receiver 500 and the power transmitting unit 420A. 10, although the wireless power receiver 500 is illustrated as a wearable smartwatch, various types of wireless power receivers 500 may be connected to the power transmitter 420A within the receiver 450 Of course. 10, the wearable smart watch corresponding to the wireless power receiver 500 is placed on the charging area CA of the power transmitting unit 420A. However, the embodiment includes the wireless power receiver 500 and the power transmitting unit 420A. ≪ / RTI >

The cylindrical mirror 416B is disposed on the inner surface of the receiving portion 450 and serves to reflect the light emitted from the light sources 414A and 414B toward the wireless power receiver 500. [ The light emitted from the light sources 414A and 414B is reflected in all directions by the cylindrical mirror 416B inside the accommodating portion 450 because the cylindrical mirror 416B is disposed on the inner surface of the cylindrical accommodating portion 450, May be irradiated to the exposed front surface of the wireless power receiver 500. In this case, all exposed surfaces of the wireless power receiver 500 can be sterilized by light in the ultraviolet wavelength band.

The receiving lid 452 serves as a cover for the receiving portion 450 and can be coupled to the receiving portion 450 by a coupling member such as a hinge or the like. But is not limited to the coupling type of the accommodating portion 450. The radiating fan 434B is disposed under the receiving cover 452 and operates under the control of the controller 440 to cool the wireless power receiver 500 or at least one of the charging areas. Here, the heat radiating fan 434B is illustrated as being disposed at the bottom of the receiving lid 452, but the embodiment is not limited to this. That is, if the heat of the wireless power receiver 500 or at least one of the charging areas can be cooled, the heat-dissipating fan 434B may be located in various places.

According to another embodiment, a mirror may also be disposed as the reflecting portion 416 on the bottom of the receiving lid 452 and on the bottom surface of the receiving portion 450. In this case, light may be irradiated to the wireless power receiver 500 in more directions than in the embodiment shown in FIG. 10 to increase the sterilizing effect.

In the case of Fig. 10, the receiving portion 450 is illustrated as being cylindrical, but the embodiment is not limited to this. That is, the receiving portion 450 may have various shapes such as a cubic shape.

The method of disinfecting or processing a wireless power receiver according to an embodiment of the present invention and the wireless power transmission device performing the same can sterilize viruses and bacteria existing in a wireless power receiver, have.

In addition, the method of radiating or processing the wireless power receiver according to the above-described embodiment and the wireless power transmission device performing the same may be implemented by spreading the heat accumulated in at least one of the wireless power receiver or the charging area around the wireless power receiver, It is possible to minimize heat generation due to wireless charging.

Also, in the case of the method of processing a wireless power receiver according to the embodiment and the wireless power transmission apparatus performing the same, the light of the ultraviolet wavelength band is influenced by the wind speed of the heat radiation fan, and the sterilizing effect can be further improved.

In addition, the aforementioned sterilization and heat dissipation is performed during the time of charging the wireless power receiver, so that no additional time is required for sterilization or heat dissipation.

6, each of the light irradiation unit 410, the electric power transmission unit 420 and the heat dissipation unit 430 is modularized and controlled by the control unit 440 individually in the wireless power transmission apparatus 400, So that it can be easily replaced at the time of failure and various designs can be made by minimizing design constraint conditions of the wireless power transmission device 400.

Still further, another embodiment may provide a computer-readable recording medium on which a program for executing the above-described method for sterilizing, heat-dissipating, and treating a wireless power receiver is recorded.

In this case, the computer-readable recording medium may be distributed over network-connected computer systems so that computer readable codes can be stored and executed in a distributed manner. And, functional program, code, and code segments for implementing the above-described method can be easily inferred by programmers in the technical field to which the embodiment belongs.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood that various modifications and applications are possible. For example, each component specifically shown in the embodiments can be modified and implemented. It is to be understood that all changes and modifications that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

60: power supply unit 62: power conversion unit
64: power transmitting section 66: transmitting coil section
68 transmission control unit 70 demodulation unit
80: Receiving coil 82:
84: voltage control unit 86: reception control unit
88: modulation section 90: object to be charged (or load)
400: wireless power transmission apparatus 410: light irradiation unit
412: optical driver 414, 414A, 414B: light source
416, 416A, 416B: reflector 420: power transmitter
422: power driver 424: wireless power transmitter
430: heat radiating part 432:
434: heat radiating fan 436: temperature measuring unit
440: Control unit 500: Wireless power receiver

Claims (18)

CLAIMS What is claimed is: 1. A method of sterilizing a wireless power receiver that receives power wirelessly from a wireless power transmission device,
Irradiating light in an ultraviolet wavelength band with the wireless power receiver when power is wirelessly transmitted to the wireless power receiver; And
And stopping the irradiation of the light when the wireless transmission of power to the wireless power receiver is terminated. 2. The method of claim 1, further comprising, when power is being wirelessly transmitted to the wireless power receiver, when the light is irradiated to the wireless power receiver for a predetermined period of time, stopping the irradiation of the light Sterilization method. The wireless power receiver of claim 1, further comprising the step of further illuminating the light with the wireless power receiver when sterilization of the wireless power receiver is required, with the wireless power receiver being seated in a charging area Lt; / RTI > 4. The method of claim 3, wherein further illuminating the light is performed when power is not being wirelessly transmitted to the wireless power receiver. 3. The method of claim 2, wherein the predetermined time is the time required to remove more than 70% of the germs of the wireless power receiver. CLAIMS What is claimed is: 1. A method of radiating radio power from a wireless power transmission device,
Wherein when the surface temperature of the charging area on which the wireless power receiver is placed is above a predetermined temperature when power is wirelessly transmitted to the wireless power receiver, Cooling; And
And stopping the operation of the heat-radiating fan when the wireless transmission of power to the wireless power receiver is terminated. 7. The method of claim 6, further comprising: operating the radiating fan further when heat is required of the radio power receiver in a state where the radio power receiver is seated in a charging area. 8. The method of claim 7, wherein the step of further operating the heat-dissipating fan is performed when power is not being wirelessly transmitted to the wireless power receiver. CLAIMS What is claimed is: 1. A method of processing a wireless power receiver seated in a charging area of a wireless power transmission device,
When the wireless power receiver is seated in a charging area and power is transmitted wirelessly to the wireless power receiver, cooling the heat of at least one of the wireless power receiver or the charging area by activating the heat dissipation fan, Irradiating light in an ultraviolet wavelength band; And
And stopping the irradiation of the light when the power transmission to the wireless power receiver is terminated, and stopping the operation of the heat radiating fan. 10. The method of claim 9, wherein the processing of the wireless power receiver
Proceeding to the step of illuminating the light when sterilization of the wireless power receiver is required when power is not being wirelessly transmitted to the wireless power receiver;
And if the operation of the heat radiating fan is required, proceeding to operating the heat radiating fan;
When power is transferred to the wireless power receiver, proceeding to operating the heat dissipation fan if the surface temperature of the charged area is above a predetermined temperature;
When power is transferred to the wireless power receiver, proceeding to illuminating the wireless power receiver with light if the surface temperature of the charging area is below a predetermined temperature; And
Further comprising: when the power is continuously supplied to the wireless power receiver, proceeding to stopping the irradiation of the light when the light is irradiated to the wireless power receiver for a predetermined time and stopping the operation of the heat-radiating fan A method of processing a receiver. A wireless power transmission apparatus capable of wirelessly transmitting power to a wireless power receiver,
At least one of a light irradiating part for irradiating the ultraviolet wavelength band with the wireless power receiver or a heat radiating part for providing wind to at least one of the wireless power receiver or the charging area;
A power transmitter including the charging area where the wireless power receiver is seated and wirelessly transmitting power to the wireless power receiver; And
And a control unit for controlling at least one of the light irradiation unit and the heat radiation unit and the power transmission unit. 12. The apparatus of claim 11, wherein the power transmitter
A wireless power transmitter for providing power to the wireless power receiver mounted in the charging area; And
And a power driver for driving the wireless power transmitter in response to a first drive control signal output from the controller. 12. The apparatus according to claim 11, wherein the light irradiation unit
A light source for emitting the light;
An optical driver for driving the light source in response to a second drive control signal output from the controller; And
And a reflector that reflects the light to the wireless power receiver. 14. The apparatus of claim 13, wherein the reflector
And a planar mirror that reflects the light to a second region opposite to the first region of the wireless power receiver viewing the charged region. 14. The apparatus of claim 13, wherein the reflector
A receiving portion for receiving the wireless power receiver and the power transmitting portion; And
And a cylindrical mirror disposed on an inner surface of the receiving portion and reflecting the light to the wireless power receiver. 14. The apparatus of claim 13, wherein the control unit
Counts whether the light has been irradiated to the wireless power receiver for a predetermined time, and generates the second drive control signal according to the counted result. 14. The apparatus according to claim 11 or 13, wherein the heat dissipating portion
Heat radiating fan; And
And a heat dissipation driving unit for driving the heat dissipation fan in response to a third drive control signal output from the control unit. 18. The apparatus of claim 17, wherein the heat dissipating unit
Further comprising a temperature measuring unit for measuring a surface temperature of the charged area,
And the control unit generates the second and third drive control signals in accordance with the temperature measured by the temperature measuring unit.

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