KR102047861B1 - Apparatus and system for managing wireless recharge based on magnetic resonance using application - Google Patents

Abstract

Disclosed are a magnetic resonance based wireless charging management apparatus using an app, and a system thereof. The wireless charging management apparatus according to an embodiment simultaneously monitors and controls the magnetic resonance type transmitter and all receivers connected thereto.

Description

Apparatus and system for managing wireless recharge based on magnetic resonance using application}

The present invention relates to a wireless charging technology, and more particularly to a management technology for monitoring and controlling wireless charging.

Magnetic resonance wireless power charging system is implemented in two ways. One of them is magnetic induction, where the antenna of the wireless power transmitter (PTU) and the antenna of the wireless power receiver (PRU) must be well matched in position and close to each other. tightly coupled). This method has a low operating frequency and the antenna of the power transmitter and the antenna of the power receiver are matched relatively accurately at a short distance, so the efficiency is excellent and the control method is similar to the conventional resonant inverter method. Has Standards adopting these technologies include the Wireless Power Consortium (WPC) Qi method and the Power Matters Alliance (PMA) method. Qi and PMA methods are highly efficient and can be manufactured at a relatively low cost. However, it is difficult for one power transmitter to supply energy to two or more power receivers at the same time, and if the power transmitter and the power receiver antenna are not matched in position, there is a problem that the charging efficiency is sharply reduced. In addition, the charging efficiency is reduced even if the distance between the power transmitter and the power receiver is a little far away, which is inconvenient for general users to use.

In order to solve this problem, a standard has been proposed that uses magnetic resonance technology and increases the energy transmission frequency so that it can be freely charged at a distance and position compared to the above standard. A4WP (Alliance for Wireless Power) is a typical standard. While the Qi and PMA methods transmit energy at frequencies of about 80 kHz to 200 kHz, the A4WP method uses a high frequency of 6.78 MHz so that the antenna size can be small and the resonance frequency of the resonator of the power receiver and the power transmitter is matched. Wireless charging is possible even at a short distance. Using the A4WP approach, it is not difficult to supply several Watts to several watts to the load, and it is also possible to transmit energy to multiple power receivers simultaneously. This method is also known as loosely coupled. However, this method is difficult to manufacture due to the high driving frequency and drives the active device at a high frequency, so the efficiency is lower than that of the tightly coupled method.

The Qi, PMA, and A4WP methods introduced so far have advantages and disadvantages, and three methods are used in combination. These standards have a disadvantage in that wireless charging standards are not compatible with each other because their frequencies are different from each other.

According to an embodiment, a magnetic resonance based wireless charging management apparatus and system using an app capable of simultaneously monitoring and controlling a magnetic resonance type transmitter and all receivers connected thereto are provided.

In one embodiment, a wireless charging management apparatus includes a memory storing a transmitter for transmitting and receiving wireless power using a magnetic resonance method and an application for monitoring and controlling a plurality of receivers for receiving wireless power from the transmitter, The receiver receives the identification information of each device from the receiver and receives the operation status information related to the wireless charging from the identified device, and obtains the operation status information from the receiver by executing an application stored in the memory and monitors the operation status of each device. A management unit for generating a control signal for controlling the operation of the device according to the state, and a transmission unit for transmitting the control signal generated by the management unit to each device.

Here, the operation state information may include voltage, current and temperature information of the transmitter, voltage, current and temperature information of each receiver, and the state of the battery.

The management unit according to an embodiment, the monitoring unit for monitoring the transmission state of the transmitter from the operation state information obtained from the transmitter and the monitoring state for each receiver from the operation state information obtained from each receiver, and the transmitter according to the monitoring result of the monitoring unit Control the transmission operation of the transmitter, receiving the transmitter power range of each transmitter according to the identified number and capacity of the transmitters from the transmitter and controlling the transmission power of each receiver of the transmitter to be maintained within the preset transmission power range, and the transmission power is overvoltage In case of over current, the transmitter controls the transmission power to be lowered.If the transmitter exceeds the preset overvoltage over current limit, the transmitter controls the transmitter to block the power supply. Receiving Control the receiving power so that the output power remains within the preset receiving power range, control the receiver to lower the receiving power if the receiving power is overvoltage overcurrent, and control the receiver to block power reception if the receiving power exceeds the preset overvoltage overcurrent limit. And a receiver controller.

Here, the monitoring unit obtains the charging mode information for each of the high speed or low speed from each receiver, obtains the operation state information for each receiver by checking whether the charging mode is running, and obtains the charging completion detection signal according to the charging state, the transmitter control unit The transmitter controls the transmitter to supply the transmission power to the corresponding receiver according to the charging mode, and the receiver controller controls the operation state detected through the monitoring unit, controls the completion of charging according to the charging completion detection signal, and charges by checking the charging state for each receiver. If the mode is not running, the receiver can be checked and disconnected.

According to an embodiment, a receiver receives frequency information from a transmitter and each receiver, and the manager sets at least one of a desired resonant frequency band and an unnecessary frequency band for wireless charging for each device, and the receiver and receiver of the transmitter and receiver obtained from the receiver. It monitors the frequency information and controls the filters of the corresponding transmitter and receiver to eliminate unnecessary frequency bands.

In one embodiment, a wireless charging system includes a transmitter that includes a cylindrical antenna and transmits wireless power through a magnetic resonance method, and is accommodated within a cylindrical antenna of the transmitter or within a communication range of the transmitter, and uses a magnetic resonance method. Receives identification information of each device from a plurality of receivers, wireless transmitters and receivers, receives operation status information from the identified devices, and detects operation status information through an application to check the operation status of each device. Wireless charging management device for monitoring and controlling the operation of the device in accordance with the monitored operating state.

Wireless charging system according to another embodiment, is located on one side of the storage compartment partitioned into a plurality of compartments and one transmitter for transmitting wireless power through the magnetic resonance method, and accommodated in each compartment of the storage box through the magnetic resonance method A plurality of receivers receiving wireless power from a transmitter, receiving identification information of each device from the transmitter and the plurality of receivers, receiving operation state information from the identified device, and detecting operation state information through an application, thereby operating state of each device. Wireless charging management device for monitoring and controlling the operation of the device in accordance with the monitored operating state.

Wireless charging management apparatus according to an embodiment can simultaneously monitor and control the magnetic resonance type transmitter and all receivers connected thereto. In particular, the wireless charging-related operation status of the transmitter and a plurality of receivers connected thereto can be monitored and controlled through the app of the management device. Accordingly, a convenient charging method, which is an advantage of the magnetic resonance method between the transmitter and the plurality of receivers, enables efficient charging at the same time.

Furthermore, the safety necessary for the commercialization of the charger is considered. There are many chargers available today, but safety-based products have not been commercialized yet, so they can be applied to all future charging methods.

1 is a block diagram of a wireless charging system according to an embodiment of the present invention,
2 is a detailed configuration diagram of the wireless charging system of FIG. 1 according to an embodiment of the present invention;
3 is a block diagram showing the detailed configuration of the management unit of FIG. 2 and information monitored and controlled by the management unit according to an embodiment of the present invention;
4 is a flowchart illustrating a transmitter control method of a management apparatus according to an embodiment of the present invention;
5 is a flowchart illustrating a receiver control method of a management apparatus according to an embodiment of the present invention;
6 is a block diagram of a wireless charging system for frequency control of the management device according to an embodiment of the present invention,
7 is a reference diagram showing an example of use of the storage-type wireless charging system according to an embodiment of the present invention,
Figure 8 is a reference diagram showing an example of the use of the cylindrical wireless charging system according to another embodiment of the present invention,
Figure 9 is a reference diagram showing an example of the use of a stationary wireless charging system according to an embodiment of the present invention,
10 is a reference diagram showing an example of use of a wireless charging system for a vehicle according to an embodiment of the present invention;
11 is a flowchart illustrating a wireless charging process according to an embodiment of the present invention.

Advantages and features of the present invention, and methods for achieving them will be apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, only the embodiments are to make the disclosure of the present invention complete, and the general knowledge in the art to which the present invention pertains. It is provided to fully convey the scope of the invention to those skilled in the art, and the present invention is defined only by the scope of the claims. Like reference numerals refer to like elements throughout.

In describing the embodiments of the present disclosure, when it is determined that a detailed description of a known function or configuration may unnecessarily obscure the subject matter of the present disclosure, the detailed description thereof will be omitted, and the following terms are used in the embodiments of the present disclosure. Terms are defined in consideration of the function of the may vary depending on the user or operator's intention or custom. Therefore, the definition should be made based on the contents throughout the specification. Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a wireless charging system according to an embodiment of the present invention.

Referring to FIG. 1, the wireless charging system 1 includes a transmitter 2 for transmitting wireless power in a magnetic resonance method, and a plurality of receivers 3-1 for receiving wireless power in a magnetic resonance method from the transmitter 2. 3-2, ..., 3-n, and a wireless charging management device for monitoring and controlling the transmitter 2 and the plurality of receivers (3-1, 3-2, ..., 3-n) 4).

The transmitter 2 and the plurality of receivers 3-1, 3-2, ..., 3-n transmit and receive wireless power signals using a magnetic resonance method. The transmitter 2 can transmit wireless power simultaneously to a plurality of receivers 3-1, 3-2, ..., 3-n. Magnetic resonance method can be largely classified into magnetic induction method and magnetic resonance method. Examples of magnetic induction methods include Qi and PMA methods, and magnetic resonance methods are A4WP methods. The transmitter 2 may be formed in various forms, for example, a charging pad using magnetic induction or magnetic resonance, a bowl-shaped charger capable of charging at a distance of several centimeters, and a surface charger.

The receiver 3 receives wireless power from the transmitter 2 to charge the battery of the electronic device that needs to be charged. The receiver 3 may be mounted in the battery cover of the smartphone. In this case, the smartphone covers the receiver 3 with the battery cover. The receiver 3 may be built in an electronic device on the consumer side. Here, the electronic device may be a mobile terminal that a consumer can carry, such as a smartphone or a tablet PC, or may be a small product such as a hearing aid or a wireless earphone. The receiver 3 may receive wireless power from the transmitter 2 using either magnetic induction or magnetic resonance, and may receive wireless power using both magnetic induction and magnetic resonance. It may be a dual band receiver.

The management device 4 is a device capable of simultaneously monitoring and controlling both a transmitter 2 and a plurality of receivers 3-1, 3-2, ..., 3-n using a magnetic resonance method. The management device 4 is connected to the transmitter 2 and the plurality of receivers 3-1, 3-2, ..., 3-n, respectively, so that the transmitter 2 and the plurality of receivers 3-1 and 3-2 are each. ,…, 3-n) Performs wireless charging related monitoring and control.

The management device 4 performs monitoring and control using an application (hereinafter, referred to as an "app") 400. In this case, the management device 4 uses the app 400 to transmit the wireless charging related transmitter 2 and the plurality of receivers 3-1, 3-2, ..., 3-n connected to the transmitter 2. You can monitor the reception status and battery status. The transmission state of the transmitter 2 can be confirmed through the voltage, current, temperature, power consumption, and the like of the transmitter 2. The reception status of the plurality of receivers 3-1, 3-2, ..., 3-n can be confirmed through the voltage, current, and temperature of each receiver 3-1, 3-2, ..., 3-n. have. The state of the battery can be checked by the remaining battery capacity, state, and type. The management device 4 monitors and controls the transmission state of the transmitter 2 and the reception state of each receiver 3-1, 3-2, ..., 3-n through the app 400. Accordingly, through the app 400, all consumers can easily and simply monitor and control the wireless charging.

The management device 4 may be any electronic device capable of communicating with both the transmitter 2 and the plurality of receivers 3-1, 3-2, ..., 3-n and running the app 400. . In particular, the management device 4 may use a wireless method such as Bluetooth, NFC, Wi-Fi, etc. for communication with the transmitter 2 and the plurality of receivers 3-1, 3-2, ..., 3-n. . An example of the management device 4 may be a smartphone, a tablet PC, a desktop, or the like on the consumer side, and may be in the form of a central management server.

The management device 4 receives identification information (ID, hereinafter referred to as ID) assigned to the transmitter 2 and each receiver 3-1, 3-2, ..., 3-n to identify each device, Receives wireless charging-related operation status information from the identified transmitter 2 and each receiver 3 and monitors the operation status, and according to the monitoring result, the transmitter 2 and each receiver 3-1, 3-2, ..., Control the operation of 3-n).

The management device 4 is compatible with all communication media, and at the same time provides a convenient charging method which is an advantage of the magnetic resonance method between the transmitter 2 and the plurality of receivers 3-1, 3-2, ..., 3-n. Enable charging. In addition, it considers the safety necessary for the commercialization of the charger. There are many chargers available today, but safety-based products have not been commercialized yet, so they can be applied to all future charging methods. The products currently being developed simply have safety controls within the product, but there is no device to monitor or control all the products. In contrast, the management device 4 of the present invention can simultaneously monitor and control the magnetic resonance type transmitter and all receivers connected thereto.

Hereinafter, the background and necessity of the present invention will be described below. Currently, it is evolving to develop a battery-powered product. And product development is evolving to charge the battery wirelessly rather than wired. In some small household appliances, various problems of the wired charging method are exposed, and the wireless method is an alternative. For example, when a wire is used for a small beauty product or an IOT product, many problems occur in the product. For example, there is a concern that water or liquid may break the internal circuit of a small product. As a measure to compensate for this, there is a wireless charging method, in particular a magnetic resonance method. If small products are developed in a sealed manner in the future, the battery charging function is required. One of the most important parts in the hermetic compact product is the safety and monitoring function, the management device 4 of the present invention serves as a controller for the safety of the products. To this end, the management device 4 is capable of mutual communication with the transmitter 2 and a plurality of receivers 3-1, 3-2, ..., 3-n connected thereto. Use a communication method utilizing (400).

Hereinafter, the management device 4 will be described below with reference to a dual band receiver, for example. The dual band receiver combines a magnetic induction receiver and a magnetic resonance receiver into one receiver. There is no commercial product yet, and it is now being commercialized. The product is self-controlled by its own control device, and there is no monitoring function and no external control function, making it difficult to manufacture in a compact and sealed manner. In order to supplement and commercialize this, the present invention uses the app 400 of the external management device 4 to perform a monitoring function for the dual band receiver and a control function for some problems.

In addition, in the future, the charging method is being switched between the low speed charging and the fast charging method, and the corresponding product is a dual receiver. Only app 400 based wireless charging method of the present invention will be a way to make a safe charger in the future. While all of the receivers currently being developed have their own control functions, the management device 4 of the present invention monitors and controls them all and allows the consumer to easily identify problems with the product. In the future, all products should also evolve into an app-based management form according to the present invention, and in order to apply to all electronic products, the system should be equipped with the present invention.

Figure 2 is a detailed configuration of the wireless charging system of Figure 1 according to an embodiment of the present invention.

In FIG. 2, only one receiver 3 receiving wireless power from the transmitter 2 is shown, but this indicates that only one receiver among the plurality of receivers managed by the management apparatus 4 is shown for convenience. The transmitter 2 includes a transmitter source control unit 20, a transmitter communication control unit 22, and a transmission antenna 24, and the receiver 3 includes a receiver source control unit 30, a receiver communication control unit 32, and a reception antenna ( 34). The management device 4 includes a communication unit 40, a management unit 42, and a memory 44, and the communication unit 40 includes a receiving unit 400 and a transmitting unit 410.

Operation control of the wireless charging related operation state of the transmitter 2 is possible in the transmitter 2 itself, and also through the management device 4. Taking the state control inside the transmitter 2 as an example, the transmitter source control unit 20 controls the input power overvoltage overcurrent controller and the output voltage controller of the transmitter 2. Input Power Overvoltage The overcurrent controller detects in advance the overvoltage overcurrent versus the output for the input power. The input power is converted through a power converter and amplified by a voltage amplifier that amplifies the voltage. The output voltage controller controls the amplified voltage. The transmitter communication control unit 22 supplies the resonance frequency (for example, 6.78 MHz) set in the resonator to the transmission antenna 24 in combination with the voltage and current generated in the voltage amplifier. The voltage current detector senses the voltage and current of the radio resonance signal output through the transmission antenna 24.

Although the transmitter 2 may control the wireless charging state by itself, there is no function of monitoring and controlling the externally, and it is possible to monitor and control the operation state of the transmitter 2 through the management device 4 of the present invention. . The management unit 42 of the management device 4 performs the monitoring and control function of the transmitter 2 through the app. For example, when the receiver 410 receives the voltage and current information of the radio resonance signal detected by the voltage current detector of the transmitter 2 from the transmitter 2 and transmits it to the manager 40, the manager 40 is Monitors the received voltage and current information and generates a control signal for controlling to maintain the value within a predetermined normal range and transmits it to the transmitter 2 through the transmitter 410. Then, the transmitter 2 adjusts the voltage amplified by the voltage amplifier through the output voltage controller according to the received control signal.

Like the transmitter 2, the receiver 3 may control its own wireless charging related operation state. However, even in this case, there is no function of monitoring and controlling from the outside, it is possible to monitor and control the operating state of the receiver 3 through the management device 4 of the present invention.

The receiver 3 according to an embodiment is connected to a receiving antenna 34 for receiving wireless power transmitted from the transmitter 2, a rectifier rectifying power supplied through the receiving antenna 34, and a rear end of the rectifier. And a voltage current controller for monitoring voltage and current and periodically detecting and controlling the voltage and current in a state of more than a predetermined reference voltage and current, and a DC current controller and a DC-DC converter connected to both ends of the load.

Operation state control of the receiver 3 in the management unit 42 For example, the receiver source control unit 30 controls the reception current 34 to control the voltage current sensed through the voltage current controller under the control of the receiver communication control unit 32. Transfer to the management device (4) through. When the management device 4 receives the received voltage current information through the receiver communication control unit 32 and transmits the received voltage current information to the management unit 42, the management unit 42 monitors the received voltage current within a preset reference voltage and current range. It generates a control signal to operate and transmits it to the receiver 3 through the transmitter 410.

Hereinafter, a detailed configuration of the management device 4 according to an embodiment will be described later.

The memory 44 stores information necessary for performing the operation of the management device 4 and information generated during the operation. In addition, an app for monitoring and controlling the transmitter 2 and the receiver 3 is stored. The app can be installed by downloading.

The communication unit 40 communicates with the transmitter 2 and the receiver 3 to receive operation state information of the wireless charging related transmitter 2 and the receiver 3, and transmits a control signal generated through the management unit 42 to the transmitter ( 410 transmits to transmitter 2 and receiver 3. The communication method may use all existing wireless communication methods such as Bluetooth (BLE), near field communication (NFC), and Wi-Fi (WIFI). The receiver 400 receives identification information of each device from the transmitter 2 and the receiver 3 and receives wireless charging related operation state information from the identified device. The transmitter 410 transmits a control signal for controlling the operation state to the transmitter 2 and the receiver 3. The operation state information includes state information such as current, voltage, and temperature of the transmitter 2 and the receiver 3 during wireless charging.

The management unit 42 monitors the wireless charging-related operation state of the transmitter 2 and the receiver 3 and controls the stable operation. For example, the voltage, current, temperature and the like of the transmitter 2 and the receiver 3 are controlled to improve the safety and quality of the device. Currently, there is no product that monitors and controls the wireless power charging function using the app, it merely monitors the charging state, and no device controls both the transmitter 2 and the receiver 3. If the existing monitoring function is that only one receiver can be monitored by one transmitter, the management unit 42 of the present invention, under the situation that one transmitter can supply wireless power to multiple receivers simultaneously, Monitor and control at the same time.

3 is a block diagram showing the detailed configuration of the management unit of FIG. 2 and information monitored and controlled by the management unit according to an embodiment of the present invention.

2 and 3, the management unit 42 includes a monitoring unit 420, a transmitter control unit 422, and a receiver control unit 424.

Monitoring unit 420 is a wireless charging-related operation state information of the battery of the consumer electronics, the transmitter (2) for transmitting wireless power, and the receiver (3) receiving the wireless power from the transmitter (2) to charge the battery Obtain and monitor. The operation state information on the battery includes information on a connected device ID, a battery charging mode (high speed / low speed), remaining amount, state, type, temperature, voltage, charging current, and the like. The operation state information on the transmitter 2 includes information on a transmitter ID, an input voltage, an input current, an output current, a transmitter temperature, and the like. The operation state information on the receiver 3 includes information on the receiver ID, rectified voltage, rectified current, output current, receiver temperature, and the like.

The monitoring unit 420 acquires IDs of the transmitter 2 and the receiver 3 for monitoring the transmitter 2 and the receiver 3. Each transmitter 2 and receiver 3 has its own ID. When the receiver is a dual band receiver, the monitoring unit 420 may obtain data on whether the magnetic induction method or the magnetic resonance method from the receiver 3. And it receives and monitors information on the rectified voltage, rectified current, output power, output current, receiver temperature and the like detected by the receiver (3). The chip set of the dual band receiver has internally set data values for selecting a magnetic induction method and a magnetic resonance method. In addition, it has a rectified voltage sensing function, an output power sensing function, a rectifying current sensing function, an output current sensing function, and a temperature sensing function. However, when these functions are implemented internally, there are no solutions to various problems in manufacturing the product, so it is difficult to use them in a sealed manner. As a method for supplementing this, the management device 4 of the present invention monitors and controls wireless charging related status information for each receiver using an app.

Currently, a receiver may use one receiver for one transmitter in a magnetic induction method, but a magnetic resonance method may use multiple receivers in a transmitter. Accordingly, the management device 4 of the present invention detects and controls the receiver state for each receiver by using a unique ID for each receiver.

The monitoring unit 420 according to an exemplary embodiment monitors the transmission state of the transmitter 2 from the operation state information obtained from the transmitter 2, and monitors the reception state for each receiver from the operation state information obtained from each receiver.

The transmitter controller 422 according to an embodiment controls the transmission operation of the transmitter 2 according to the monitoring result of the monitoring unit 420. The transmitter 2 detects the receivers through communication with the receivers and determines a receiver-specific transmission power range of the transmitter 2 according to the quantity and capacity, and the transmitter controller 422 receives it from the transmitter 2, The transmission power for each receiver of the transmitter 2 is controlled to be maintained within a preset transmission power range. If the transmission power is an overvoltage overcurrent, the transmitter 2 may be controlled to lower the transmission power. If the transmit power exceeds a preset overvoltage overcurrent limit, the transmitter 2 may control to cut off the power supply.

The receiver controller 424 according to an embodiment controls the reception operation of each receiver according to the monitoring result of the monitoring unit 420. For example, the reception power is controlled to maintain the reception power of the receiver 3 within a preset reception power range. If the reception power is an overvoltage overcurrent, the receiver 3 may be controlled to lower the reception power. If the received power exceeds a preset overvoltage overcurrent limit, the receiver 3 may control to cut off power reception.

When the monitoring unit 420 according to an embodiment obtains the charging mode information on whether the high speed or low speed from each receiver, the transmitter control unit 422 transmits the transmission power to the receiver 3 in accordance with the charging mode Control to supply. When the monitoring unit 420 obtains the operation state information for each receiver by checking whether the charging mode is running, the receiver control unit 424 controls the operation state detected through the monitoring unit 420. If the charging mode is not running by checking the charging status of each receiver, check the receiver that is not charged and disconnect the confirmed receiver. When the monitoring unit 420 acquires the charge completion detection signal according to the charging state, the receiver controller 424 controls the completion of charging according to the charge completion detection signal.

4 is a flowchart illustrating a transmitter control method of a management apparatus according to an embodiment of the present invention.

In FIG. 4, one receiver 3 is illustrated as an example, but it is represented by representing one of a plurality of receivers receiving wireless power from the transmitter 2. Referring to FIG. 4, the management device 4 obtains an ID assigned to the transmitter 2 and an ID assigned to the receivers 400 and 402, respectively, and the transmitter 2 matches the quantity and capacity of the acquired receiver ID. Control to supply the transmit power. Since the transmitter 2 can connect several receivers to one transmitter 2, the transmitter 2 senses and communicates with these receivers to determine how much power each supplies according to the quantity and capacity of the receivers. Receiver capacity can be determined according to the frequency and voltage of the receiver. The management device 4 receives the transmission power range information for each receiver ID, which is information on how much power to supply to each receiver, from the transmitter 2 (404).

When the transmitter 2 starts to supply wireless power to the receiver 3 (406), the management device 4 receives (408) the transmission power information of the transmitter 2 from the transmitter 2 and monitors it. The transmission power information may be power output from the transmitter 2. At the time of monitoring, when the transmission power exceeds the preset transmission power range and detects the overvoltage overcurrent (410), a control signal for supplying stable transmission power is transmitted to the transmitter 2 through the function of correcting it ( 412). The control signal may include a voltage current value for supplying a stable transmission power. The preset stable voltage current value may be a value determined by communication between the transmitter 2 and the receiver 3, and the management device 4 may acquire it and control the transmitter 2 to transmit at a stable power. have. Or it may be a value set by the management device administrator. The management device manager may be a consumer of a filling product. The transmitter 2 can stabilize the power according to the received control signal and supply power corresponding to the capacity of the receiver 3.

The management device 4 detects the overvoltage overcurrent, adjusts the transmission power of the transmitter 2, and when the overvoltage overcurrent reaches the threshold value (414), the power supply of the transmitter 2 can be cut off to protect the charging product. have. At this time, the causal problem is transmitted through the app, and the ID of the receiver in question is removed and the stabilized power is supplied, and the consumer can check the voltage and control the voltage and current to supply power to the set value.

5 is a flowchart illustrating a receiver control method of a management apparatus according to an embodiment of the present invention.

In FIG. 5, one receiver 3 is illustrated as an example, but it is illustrated that one of a plurality of receivers receiving wireless power from the transmitter 2 is represented. Referring to FIG. 5, the management device 4 obtains an ID assigned to the transmitter 2 and an ID assigned to the receivers (500 and 502). The management device 4 receives the receiver charging mode information from the receiver 3 (504), which may be a fast charging mode or a slow charging mode. The management device 4 may control the transmitter 2 to supply the power to the receiver 3 according to the receiver charging mode (506).

When the transmitter 2 starts supplying wireless power to the receiver 3 (508), the management device 4 receives (510) the received power information of the receiver 2 from the receiver 2 and monitors it. The reception power may be a rectified current and a rectified voltage value detected by the receiver 3. Upon monitoring, when the reception power exceeds the preset reception power range and detects the overvoltage overcurrent (512), a control signal for receiving stable reception power is transmitted to the receiver 3 through a function of correcting the overvoltage overcurrent ( 514). The control signal may include a voltage current value for receiving stable reception power. The preset stable voltage current value may be a value determined by communication between the transmitter 2 and the receiver 3, and the management device 4 may acquire it and control the receiver 3 to receive the stable power. have. Or it may be a value set by the management device administrator. The management device manager may be a consumer of a filling product. The receiver 2 may achieve stabilization according to the received control signal and receive power corresponding to the capacity of the receiver 3.

The management device 4 adjusts the reception power of the receiver 3 by detecting the overvoltage overcurrent, and when the overvoltage overcurrent reaches a threshold value (516), checks the ID of the corresponding receiver (2) and removes it (518). It can protect the filling product. At this time, the causal problem can be transmitted through the app, and the ID of the receiver in question can be selected and removed, and the consumer can check the voltage and control the voltage and current to receive the power at the set value.

6 is a block diagram of a wireless charging system for frequency control of the management device according to an embodiment of the present invention.

In addition to the desired resonant frequency, several frequencies due to resonance are generated at the same time, which causes various problems depending on the frequency characteristics of other products or devices, which makes it difficult to commercialize the product. Accordingly, in order to eliminate unnecessary frequencies other than the desired resonant frequency, the present invention mounts a filter on each transmitter and receiver and uses this filter to attenuate unwanted frequency bands so as not to affect other products. The filter may be a notch filter.

For the safety of all self-resonant wireless power chargers, a filter is used to block the interference of certain frequencies and enable stable magnetic resonance at the desired frequency. The problem of frequency interference in various other products due to frequency can be solved.

To this end, the management device (4) to set the frequency band unnecessary to the product and control it to be a stable charging. The monitoring function checks frequency information of both transmitter and receiver and controls unnecessary frequency bands of transmitter and receiver.

Hereinafter, each component for frequency control will be described below with reference to FIG. 6 based on the above-described purpose. The receiver 400 of the management device 4 receives frequency information at the time of resonance from the transmitter 2 and the receiver 3. The management unit 42 sets at least one of a desired resonant frequency band and an unnecessary frequency band at the time of wireless charging for each device, and monitors frequency information of the transmitter 2 and the receiver 3 obtained from the receiver 400, If an unnecessary frequency band is detected, a control signal is generated to remove it. The transmitter 410 transmits a control signal to the transmitter 2 and the receiver 3, the transmitter 2 removes unnecessary frequency bands using the first filter 25, and the receiver 3 receives the second filter ( 35) to remove unnecessary frequency bands. The transmitter 2 transmits a wireless power signal through the output impedance matching network 26 and the output antenna 27 at a resonant frequency in which unnecessary frequency bands are removed through the first filter 25 under the control of the management device 4. And the receiver 3 receives the wireless power signal through the input antenna 37 and the input impedance matching network 36 at the same resonant frequency as the transmitter 2, but under the control of the management device 4 The filter 35 removes unnecessary frequency bands.

7 is a reference diagram illustrating an example of a storage wireless charging system according to an embodiment of the present invention.

The charging method has evolved from the adapter method to the charging method by supplying wireless power to one receiver from one transmitter through a magnetic induction method. Furthermore, one transmitter is evolving in such a way that it can simultaneously supply wireless power to multiple receivers.

For stable monitoring and control in a manner in which one transmitter can simultaneously supply wireless power to multiple receivers, as shown in FIG. 7, a plurality of receivers 3-1, 3-2, ..., 3-5 We propose a storage type that can accommodate 3-6) at the same time. In FIG. 7, the plurality of receivers 3-1, 3-2,..., 3-5, 3-6 may be embedded or mounted in a small product such as a smart phone. Until now, only one receiver is used for one transmitter, but FIG. 7 is a system in which one transmitter is responsible for a plurality of receivers so that many people can charge simultaneously. As shown in FIG. 7, transmitters 2-1 and 2-2 are provided at one side of the storage box, for example, at the bottom thereof, and wireless power can be received from each transmitter 2-1 and 2-2. A plurality of receivers 3-1, 3-2, ..., 3-5, 3-6 may be accommodated in each compartment.

With the development and evolution of expensive smartphones, we propose a system that can solve the problem of safety. For example, each compartment of the storage box can be locked with a lock, so each individual can be charged, so each product can be charged and the risk of loss can be prevented.

8 is a reference diagram showing an example of the use of the cylindrical wireless charging system according to an embodiment of the present invention.

The self-resonant wireless power charging method is a method of charging wireless power with an antenna, and the general linear antenna method cannot satisfy all the charging for various types of receivers. As a way to solve this problem, as shown in Figure 8, by using the cylindrical transmitting antenna 22 and the cylindrical receiving antenna 32, the small products (3-1, 3-2, ..., 3- 5,3-6). The transmitter consists of a transmission module 20 and a cylindrical transmission antenna 22. In FIG. 8, the cylindrical receiving antenna 22 and the small products 3-1, 3-2,..., 3-5, 3-6 are separately shown, but the receiving antenna 22 is mounted on the small product. For example, it may be manufactured as a cylindrical small product in a wearable form such as a smart watch. Cylindrical compacts will be a more effective filling technology, especially for the IOT family, which is being developed into a variety of products. Since self-resonant wireless power charging technology is the most important antenna technology, all future chargers should include multiple receivers, and the cylindrical charging device will be a more efficient method.

9 is a reference diagram showing an example of the use of a stationary wireless charging system according to an embodiment of the present invention.

Referring to FIG. 9, a stationary transmitter 2 is mounted in a refrigerator, a TV, a table, a sofa, a bedroom, a bus, a train, etc. in a manner devised for consumer convenience, and each receiver 3-1,3- 2,3-3) so that you can conveniently charge as you receive the wireless power. It is assumed that the receivers 3-1, 3-2, 3-3 in Fig. 9 are mounted on or integrated with a consumer product.

It can also be used to ensure consumer safety by incorporating a sensing function in the product to recognize explosion problems caused by battery problems that may occur in rechargeable products such as laptops or dangerous goods installed for malicious purposes, such as bombs. Can contribute To this end, a function of checking the power supply of each receiver 3-1, 3-2, 3-3 to the transmitter 2 is added to each receiver 3-1, 3-2, 3-3. By detecting the required power, it is possible to determine whether there is an abnormality and secure safety in advance. The principle is to simply put the batteries of the receivers 3-1, 3-2 and 3-3 on the transmitter 2 and check the battery capacity to detect any abnormality of all batteries in advance. As a result, problems caused by the battery can be prevented in advance. As another example, the presence or absence of any battery may be detected in advance through an external control for checking the battery capacity of each receiver 3-1, 3-2, 3-3 through the app of the management device of the present invention.

10 is a reference diagram showing an example of use of a wireless charging system for a vehicle according to an embodiment of the present invention.

Referring to FIG. 10, a receiver may be charged using a transmitter in a vehicle. In the vehicle, the receiver may be mounted as shown in FIG. 10, but is not limited thereto.

At this time, in addition to the charging function, it has a battery detection function through the management device of the present invention, and detects the malfunction of the vehicle, for example, the electric vehicle and the mis-navigation of the wrong navigation and in response to the notification to the control center and the situation room in emergency Can cope In addition, the ability to send and receive the program of the vehicle itself will be widely used and can be used as the best protection for safety.

11 is a flowchart illustrating a wireless charging process according to an embodiment of the present invention.

The process of FIG. 11 may be applied to the storage method of FIG. 7, the cylindrical antenna method of FIG. 8, the stationary method of FIG. 9, and the vehicle method of FIG. 10.

Referring to FIG. 11, the management device obtains IDs of transmitters and receivers connected to each other (1100). When the transmitter supplies wireless power to each receiver, the management apparatus checks whether the transmitter supplies the transmission power corresponding to the frequency and voltage of the transmitter from the transmitter (1102). Subsequently, the charging mode (high speed, low speed) information is obtained from the receiver to confirm (1104), and if the charging mode is running (1106), and if it is running, check the charging status by ID of the receiver (1108) and by receiver ID The operation state of the overvoltage, overcurrent, and temperature is sensed and controlled (1112). Thereafter, when charging is completed, the charging completion detection signal is transmitted (1114). In the charging mode execution determination step 1106, if the charging mode is not being executed, the charging state of the receiver may be checked to disconnect the receiver ID of the charging failure (1110).

So far, the present invention has been described with reference to the embodiments. Those skilled in the art will appreciate that the present invention can be implemented in a modified form without departing from the essential features of the present invention. Therefore, the disclosed embodiments should be considered in descriptive sense only and not for purposes of limitation. The scope of the present invention is shown in the claims rather than the foregoing description, and all differences within the scope will be construed as being included in the present invention.

1: wireless charging system 2: transmitter
3,3-1,3-2,... , 3-n: receiver 4: wireless charging management device
20: transmitter source control unit 22: transmitter communication control unit
24: transmitting antenna 25: first filter
26: output impedance matching network 27: output antenna
30: receiver source control unit 32: receiver communication control unit
34: receiving antenna 35: second filter
36: input impedance matching network 37: input antenna
40: communication unit 42: management unit
44: memory 400: receiver
410: transmitting unit 420: monitoring unit
422: transmitter control unit 424: receiver control unit

Claims (7)

A memory storing a transmitter for transmitting wireless power using a magnetic resonance method and an application for monitoring and controlling a plurality of receivers for receiving wireless power from the transmitter;
Wirelessly communicates identification information of each device from a plurality of receivers which control the wireless charging related operation state through the transmitter and receiver source control unit and the receiver communication control unit through the transmitter source control unit and the transmitter communication control unit. Receiving unit for receiving and receiving the wireless charging-related operation status information from the identified device;
By executing the application stored in the memory to obtain the operation status information from the receiver, and simultaneously monitor the transmission status of the transmitter and the reception status and battery status of each receiver to integrate the wireless charging-related operation of the transmitter and each receiver according to the monitoring result A management unit generating a control signal for controlling; And
A transmitter for transmitting the control signal generated by the manager to each device; As it includes,
Receiving the operation state information controlled and transmitted by the transmitter source control unit and the transmitter communication control unit of the transmitter, and the operation state information controlled and transmitted by the receiver source control unit and the receiver communication control unit of each receiver; Magnetic resonance-based integrated wireless charging management device using the app, characterized in that the integrated control through the app. The method of claim 1,
Operation state information, the voltage, current and temperature information of the transmitter, the voltage, current and temperature information of each receiver, and the magnetic resonance-based integrated wireless charging management device using the app, characterized in that the state of the battery. The method of claim 1, wherein the management unit
A monitoring unit for monitoring a transmission state of the transmitter from the operation state information obtained from the transmitter and monitoring a reception state for each receiver from the operation state information obtained from each receiver;
While controlling the transmission operation of the transmitter according to the monitoring result of the monitoring unit, receiving the transmission power range for each receiver of the transmitter according to the quantity and capacity of the identified receiver from the transmitter, the transmission power for each receiver of the transmitter is preset transmission power range A transmitter control unit to control the transmitter to maintain the transmission power, and to control the transmitter to lower the transmission power when the transmission power is an overvoltage overcurrent, and to block the power supply when the transmission power exceeds a preset overvoltage overcurrent limit value; And
Control the receiving operation of each receiver according to the monitoring result of the monitoring unit, and control the receiving power so that the receiving power of each receiver is maintained within the preset receiving power range, and if the receiving power is overvoltage overcurrent, the receiver lowers the receiving power. A receiver controller to control the receiver to block power reception when the received power exceeds a preset overvoltage overcurrent limit value;
Magnetic resonance-based integrated wireless charging management device using an app comprising a. The method of claim 3, wherein
The monitoring unit obtains charging mode information on whether it is high speed or low speed from each receiver, obtains operation state information for each receiver by checking whether the charging mode is running, obtains a charging completion detection signal according to the charging state,
The transmitter control unit controls the transmitter to supply the transmission power to the receiver in accordance with the charging mode,
The receiver controller controls the operation state detected through the monitoring unit, controls the charging completion according to the charging completion detection signal, and checks the receiver that is not charged, if the charging mode is not running by checking the charging state for each receiver and confirmed the receiver Magnetic resonance-based integrated wireless charging management device using the app, characterized in that the connection is disconnected. The method of claim 1,
The receiver receives frequency information from the transmitter and each receiver,
The management unit sets at least one of a desired resonant frequency band and an unnecessary frequency band at the time of wireless charging for each device, monitors frequency information of a transmitter and a receiver obtained from the receiver, and controls filters of a corresponding transmitter and a receiver. Magnetic resonance based integrated wireless charging management device using the app, characterized in that to remove the frequency band. A transmitter including a cylindrical antenna, transmitting wireless power through a magnetic resonance method, and controlling the wireless charging related operation state through a transmitter source control unit and a transmitter communication control unit;
A plurality of receivers that can be accommodated within the cylindrical antenna of the transmitter or within its communication range, receive wireless power from the transmitter through a magnetic resonance method, and control the wireless charging related operation state through a receiver source controller and a receiver communication controller. ; And
Receive identification information of each device from the transmitter and the plurality of receivers through wireless communication, receive operation state information from the identified device, and detect operation state information through an application to detect the transmission state of the transmitter and the reception state of each receiver. And a wireless charging management device that simultaneously monitors battery status and controls wireless charging related operations of the transmitter and each receiver according to the monitoring result. As it includes,
Receiving the operation state information controlled and transmitted by the transmitter source control unit and the transmitter communication control unit of the transmitter, and the operation state information controlled and transmitted by the receiver source control unit and the receiver communication control unit of each receiver; Magnetic resonance-based integrated wireless charging system using the app, characterized in that the integrated control through the app. A transmitter located at one side of the storage compartment divided into a plurality of compartments, transmitting wireless power through a magnetic resonance method, and controlling the wireless charging related operation state through a receiver source control unit and a receiver communication control unit;
A plurality of receivers accommodated in respective compartments of the storage box, receiving wireless power from the transmitter through a magnetic resonance method, and controlling the wireless charging related operation state through a receiver source control unit and a receiver communication control unit; And
Receive identification information of each device from the transmitter and the plurality of receivers through wireless communication, receive operation state information from the identified device, and detect operation state information through an application to detect the transmission state of the transmitter and the reception state of each receiver. And a wireless charging management device that simultaneously monitors the battery status and controls the wireless charging related operations of the transmitter and each receiver according to the monitoring result. As it includes,
Receiving the operation state information controlled and transmitted by the transmitter source control unit and the transmitter communication control unit of the transmitter, and the operation state information controlled and transmitted by the receiver source control unit and the receiver communication control unit of each receiver; Magnetic resonance-based integrated wireless charging system using the app, characterized in that the integrated control through the app.

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