KR101132743B1 - Power-sharing device capable of power sending and power receiving between the terminal - Google Patents

Abstract

PURPOSE: A battery sharing apparatus is provided to increase a cost reduction effect by transmitting a charging request signal through a sound wave signal of audio frequency boundary and utilizing a speaker and a microphone included in a portable terminal. CONSTITUTION: A coil and adjustment circuit part(10) transmits and receives wireless power. A wireless charge receiver(20) supplies the wireless power applied from the coil and adjustment circuit part to a battery(60). A wireless charge transmission part(30) supplies charge power of the battery to the coil and adjustment circuit part. A first switch(40) and a second switch(41) forms a power transmission mode for supplying the power of the battery to outside. A controller(50) controls the drive of the wireless charge transmission part and the wireless charge receiver.

Description

Power-Sharing Device Capable of Power Sending and Power Receiving Between the Terminal}

The present invention relates to a power sharing device capable of transmitting and receiving power between terminals, and more particularly, a terminal for recharging one's battery using another portable terminal when there is no commercial power when the portable terminal is discharged. The present invention relates to a power sharing device capable of transmitting and receiving power therebetween.

In recent years, as communication and information processing technologies are developed, the use of portable terminals, such as mobile phones, which are convenient to carry, is gradually increasing, and according to the development of technologies, new models of terminals having improved performances are continuously spreading. In order to solve the problem of the contact type charging method or the contact type charging method due to the contact terminal being exposed to the outside, the contactless charging method of charging the portable terminal using a magnetic coupling without electrical contact is used.

As a technology corresponding to a contactless charger, wirelessly connects a battery pack and a charging device by using a magnetic core, such as a non-contact charging device of a storage battery for a portable mobile device by induction coupling, published in Korean Patent Application Publication No. 2002-0035242. The method of charging by communication, the prior application published in Korean Patent Application Publication No. 2002-0057469, a printed circuit board (PCB: printed ultra-thin printed circuit board transformer and a contactless battery charger using the printed circuit board transformer) A method of solving a problem of a magnetic core using a transformer formed on a circuit board has been proposed.

In addition, through Patent Publication No. 2005-96068, 'A non-contact battery charging system capable of multi-charging and a core block design method', etc., to configure a wireless charging pad to perform the function of a contactless charger, for wireless charging Various techniques have been proposed for putting a battery pack of a mobile terminal on a pad to be charged in a contactless manner.

Power transmitted from a wireless power transmitter such as a non-contact charging device or a wireless charging pad is applied to the coil and matching circuit of the portable terminal, which is supplied to the battery through the wireless charging receiver converting to rectification and DC power and charged.

However, these wireless power transmitters are mostly portable from AC power sources.

Accordingly, the prior art has a problem in that the battery of the portable terminal cannot be charged in a spatial constraint in which a wireless power transmitter for charging the portable terminal is not provided or a commercial power source for driving the wireless power transmitter cannot be obtained.

The present invention has been made to solve the above problems, a wireless charging transmission unit for transmitting the charging power of the battery to the outside in the portable terminal, a wireless charging receiving unit for receiving the external wireless power supply to the battery, and wireless power reception Alternatively, the controller may control the transmission, and the first switch and the second switch are connected to each other, thereby enabling the sharing of the battery charging power between the mobile terminals, even though the battery charging environment is restricted. It is an object of the present invention to provide a power sharing apparatus capable of transmitting and receiving power between terminals that can receive power of a portable terminal.

The present invention has the following features to achieve the above object.

According to an aspect of the present invention, there is provided a power sharing apparatus mounted on a portable terminal for supplying or receiving power between batteries installed in the portable terminal, the power sharing apparatus comprising: a coil and a matching circuit unit for transmitting or receiving wireless power; A wireless charging receiver receiving and rectifying the wireless power applied from the coil and the matching circuit unit, converting the power into a DC power supply, and supplying the battery to the battery; A wireless charging transmission unit for receiving the charging power of the battery and converting it into AC power and supplying it to the coil and the matching circuit unit to perform wireless power transmission to the outside; Combining the coil and the matching circuit unit and the front end of the battery, respectively, connecting the coil and matching circuit unit and the wireless charging and receiving unit and the battery to configure the power receiving mode to charge the battery by receiving external wireless power or the coil and matching circuit unit and A first switch and a second switch constituting a power transmission mode for supplying power of the battery to the outside as the wireless charging transmission unit and the battery are connected; And a controller configured to control the first switch and the second switch to select a power reception mode or a power transmission mode and to control driving of the wireless charging receiver and the wireless charging transmitter.

The control unit may be driven in a power reception mode or a power transmission mode according to a user's input of setting information, and the control unit may include a remaining amount checker for detecting a remaining charge of a battery, and another portable terminal for supplying wireless power within a predetermined range. It includes a device detecting unit for detecting the location.

In addition, when the user's setting information is input in the power transmission mode, the control unit determines whether the remaining battery capacity is greater than the predetermined remaining amount through the remaining amount checking unit, and whether there is another portable terminal capable of receiving wireless power through the device detecting unit. If the remaining amount is greater than the set specific remaining amount and there is another portable terminal, the wireless power is transmitted by driving the power transmission mode, and when the remaining battery amount is smaller than the set specific remaining amount or there is no other portable terminal, it is changed to the power receiving mode and driven.

In addition, the power sharing device includes a sound wave signal generation unit for generating a battery charge request signal as a sound wave signal of an audible frequency boundary band including its own mobile terminal identification information, and a speaker for outputting the sound wave signal generated by the sound wave signal generation unit And a microphone unit for receiving a sound wave signal output from another portable terminal, a filter unit for filtering only a sound source of the audible frequency boundary band among the signals received from the microphone unit, and analyzing the filtered sound source signal. A sound source analyzer for extracting the battery charge request signal including the terminal identification information is included.

The controller may be configured to drive the sound wave signal generation unit to output a battery charge request signal through a speaker unit when it is determined that rapid charge of the battery is required through the remaining amount check unit, and to provide a battery charge request signal of another portable terminal through a sound source analyzer. In this case, the wireless power is transmitted by driving the power transmission mode according to the setting.

According to the present invention, when the portable terminal is discharged, the convenience of charging the own battery by using the portable terminal of another person in a situation where there is no commercial power is provided.

In addition, according to another embodiment of the present invention, as the charge request signal is transmitted through the sound wave signal of the audible frequency boundary, it is possible to utilize the configuration of a speaker, a microphone, etc. provided in the existing portable terminal, thereby reducing the cost.

1 is a view showing the internal configuration of a power sharing apparatus according to an embodiment of the present invention.
2 is a flowchart illustrating a process of performing power transmission or power reception according to a power sharing apparatus according to an embodiment of the present invention.
3 is a diagram illustrating an internal configuration of a power sharing apparatus according to another embodiment of the present invention.

Hereinafter, the power sharing apparatus according to the present invention will be described in detail with the accompanying drawings.

1 is a view showing the internal configuration of a power sharing apparatus according to an embodiment of the present invention.

Referring to the drawings, the power sharing apparatus 100 according to the present invention receives the coil and matching circuit unit 10 and the wireless power applied from the coil and the matching circuit unit 10 to greatly transmit or receive wireless power. The wireless charging and receiving unit 20 rectifies and converts the DC power to the battery 60, and receives the charging power of the battery 60, converts the power into AC power, and supplies the same to the coil and the matching circuit unit 10. The wireless charging transmission unit 30 and the coil and matching circuit unit 10 and the front end of the battery 60 are respectively coupled to the wireless power transmission to the outside to make the wireless power transmission to the coil and matching circuit unit 10 and the wireless charge receiving unit 20 ) And the battery 60 to configure the power receiving mode to charge the battery 60 by receiving an external wireless power or coil and matching circuit unit 10 and the wireless charging transmission unit 30 and the battery 60 In connecting the liver The first switch 40 and the second switch 41 constituting the power transmission mode for supplying the power of the battery 60 to the outside, and the first switch 40 and the second switch 41 are controlled. Selecting the power receiving mode or the power transmission mode and comprises a control unit 50 for controlling the operation of the wireless charging receiver 20 and the wireless charging transmitter 30.

Here, the coil and matching circuit unit 10 is provided to receive or transmit wireless power in the form of induction electromotive force, and when receiving wireless power, transfers the wireless power received from the outside to the wireless charging receiver 20. In the case of transmitting to the outside, the wireless power transmission unit 30 receives the wireless power and transmits it to the outside.

In addition, the wireless charging receiver 20 receives the wireless power supplied from the coil and the matching circuit unit 10 from the outside to convert the rectification and DC power to supply the charging power to the battery 60.

In addition, the wireless charging transmitter 30 receives wirelessly charged power from the battery 60 as opposed to the wireless charging receiver 20, converts it into AC power, and supplies power to the coil and matching circuit unit 10. Enable transmission of power.

Since the configuration of supplying or receiving wireless power through the coil and matching circuit unit 10, the wireless charging receiving unit 20, and the wireless charging transmission receiving unit 30 is a well-known technology, a detailed description thereof will be omitted.

Meanwhile, the first switch 40 and the second switch 41 are respectively coupled to the rear end of the coil and the matching circuit unit 10 and the front end of the battery 60 so that any one of the wireless charging receiver 20 or the wireless charging transmitter 30 may be used. It is connected together as one, which is connected to the wireless charging receiver 20, when the first switch 40 and the second switch 41 is connected to the power sharing device 100 of the portable terminal 200 to supply the external wireless power When the first switch 40 and the second switch 41 is connected to the wireless charging and transmitting unit 30 and the wireless charging and receiving unit 30 is connected to the power sharing device of the mobile terminal 200 ( 100 is to operate in a power transmission mode for supplying the power of the battery 60 to the outside.

The connection between the first switch 40 and the second switch 41 to either the wireless charging receiver 20 or the wireless charging transmitter 30 is driven under the control of the controller 50. The controller 50 The control the connection of the first switch 40 and the second switch 41 as well as the driving of the wireless charging receiver 20 or wireless charging transmitter 30.

Here, the control unit 50 controls the connection of the first switch 40 and the second switch 41 according to the user's basic settings or the power in the power receiving mode or power transmission mode in accordance with the constant setting information input Mode selection is made and connection control of the first switch 40 and the second switch 41 and driving control of the wireless charging receiver 20 or the wireless charging transmitter 30 are performed according to the selected power mode.

In this case, the user inputs the setting information through the keypad or the touch panel provided in the mobile terminal 200, and of course, the setting information is set to the power receiving mode in the normal state, and then set to the power transmission mode if the user needs it. It is preferable to configure the information to be changed by inputting, but it may be configured in various forms.

In addition, the control unit 50 includes a remaining amount check unit 51 for detecting a remaining charge of the battery 60, and a device detector 52 for detecting whether the other portable terminal for supplying wireless power is located within a predetermined range. The remaining amount checking unit 51 and the device detecting unit 52 may be configured to detect the remaining amount of the battery and the external device by using hardware in the portable terminal or to detect the remaining amount of the battery 60 and the external device by software. .

On the other hand, the controller 50 determines whether the remaining power of the battery is greater than the predetermined remaining amount through the remaining amount checking unit 51 when the user's setting information is input to the power transmission mode, and wirelessly through the device detecting unit 52. It is determined whether there is another portable terminal capable of receiving power, and the remaining amount of battery 60 is greater than the set specific remaining amount. If there is another portable terminal, the power transmission mode is activated to wirelessly transmit the battery 60 charging power to the outside, and the remaining battery capacity is determined. If the mobile terminal has a small amount of charge by switching to the power reception mode when the mobile terminal is smaller than the set specific remaining amount or there is no other mobile terminal, the wireless power transmission is prevented from being transmitted to the outside when the mobile terminal has a small amount of charge. do.

2 is a flowchart illustrating a process of performing power transmission or power reception according to a power sharing apparatus according to an embodiment of the present invention.

Referring to the drawings, according to an embodiment of the present invention, the power transmission or power reception process of the power sharing apparatus first receives or inputs power mode information on the power transmission mode or the power reception mode from the user in advance (S100). .

Accordingly, it is determined whether the set power mode is the power reception mode or the power transmission mode (S110). In the power reception mode, the first switch 40 and the second switch 41 are coils and a matching circuit unit 10. And driven by the control unit 50 to connect the wireless charging and receiving unit 20 and the battery 60 (S200), the control unit 50 and the connection control of the first switch 40 and the second switch 41 and Along with driving the wireless charge receiving unit 20 to receive the wireless power delivered from the outside to perform the task of charging the battery 60 (S210).

In addition, if there is a change in the power mode from the user while being charged, it can be switched to the power transmission mode, and if there is no change is continuously performed (S220).

On the other hand, when the power mode set or input from the user is the power transmission mode, the first switch 40 and the second switch 41 are connected between the coil and matching circuit unit 10, the wireless charging transmission unit 30, and the battery 60. The control unit 50 is driven to connect (S300), the control unit 50 drives the wireless charging and transmitting unit 30 with the connection control of the first switch 40 and the second switch 41, the battery 60 Supplying charging power to the outside is performed.

At this time, the remaining amount check unit 51 of the control unit 50 checks the remaining battery level of the mobile terminal 200 in the power transmission mode (S310) to determine whether or not more than the specific battery remaining amount (S320), not enough. If it is determined, the controller 50 displays a 'battery low battery' message through a separate display means (S340) and changes the power mode to the power reception mode (S341).

In addition, when it is determined that the battery remaining amount is greater than the specific battery remaining amount, the device detector 52 searches whether there is a portable terminal to receive the power supply within a predetermined radius (S331).

The presence or absence of such a mobile terminal can be searched through infrared communication or transmission and reception through a sound wave signal as in an embodiment to be described later. Since such a search technology is known in various forms, a separate description will be omitted.

Accordingly, when there is a portable terminal, the controller 50 drives the wireless charging and transmitting unit (S332) to supply the charging power of the battery 60 to the corresponding portable terminal, where the remaining amount check unit 51 of the controller 50 is charged. During transmission, the battery remaining amount is continuously checked according to the set time, and when the amount is greater than a specific battery level, the controller continuously supplies charging power and informs the control unit 50 when it is small.

Accordingly, the control unit 50 displays a 'battery low battery' message (S335), stops the operation of the wireless charging and transmitting unit 30 (S336), and changes the power mode to the power reception mode (S337).

On the other hand, if there is no portable terminal 200 to receive the power supply within a certain radius through the device detector 52, the controller 50 displays the message 'No target portable terminal' (S350) to change to the power reception mode. (S351).

3 is a diagram illustrating an internal configuration of a power sharing apparatus according to another embodiment of the present invention.

Referring to the drawings, in the present embodiment, as in the above-described embodiment, power reception or power supply is performed according to the power mode setting of the user, whereas the remaining amount of the battery 60 of the mobile terminal 200 is the remaining amount checking unit 51. If it is determined that the lack is very low through the transmission of the sound request signal in the form of a sound wave signal to another mobile terminal 200 located within a predetermined radius is configured to receive the necessary power.

To this end, the power sharing apparatus 100 according to the present embodiment includes a sound wave signal generator 70 for generating a battery charge request signal as a sound wave signal in an audible frequency boundary band including identification information of its own mobile terminal 200, The speaker unit 71 for outputting the sound wave signal generated by the sound wave signal generation unit 70, the microphone unit 72 for receiving the sound wave signal output from the other portable terminal 200, and the microphone unit 72 Filter unit 73 for filtering only the sound source of the audible frequency boundary band among the signals received from the signal, and by analyzing the filtered sound source signal to extract the battery 60 charge request signal including the identification information of the other mobile terminal 200 The sound source analysis unit 74 is further included.

Here, the sound wave signal generated by the sound wave signal generator 70 has a frequency band near 20,000 Hz (20,000 Hz), which is a band invisible to humans among the audible frequencies, and the sound wave signal of the audible frequency boundary band is A person cannot hear it, but the microphone unit 72 may receive the input and extract the charge request signal including the identification information from the sound source analyzer 74 through the filter unit 73.

Therefore, when describing the operation of the power sharing apparatus 100 according to the present embodiment, first, when the controller 50 receives the remaining battery information of the remaining amount checking unit 51 and determines that its own mobile terminal needs to be fast charged, the sound wave The signal generator 70 is driven.

Accordingly, the sound wave signal generation unit 70 outputs a battery charge request signal together with its own mobile terminal identification information through the speaker unit 71, and if there are other mobile terminals within a predetermined radius, this is the microphone unit 72. Receive via

The microphone unit 72 of the other portable terminal transmits the received sound wave signal to the filter unit 73, and the filter unit 73 filters only the sound wave signal of the audible frequency boundary band and transmits it to the sound source analyzer 74. .

Accordingly, the sound source analyzer 74 extracts the portable terminal identification information and the battery charge request signal included in the sound wave signal, and transmits the same to the controller 50 to determine whether the power is transmitted.

When the controller 50 determines to perform the power transmission by checking the remaining amount of the user's mobile terminal and the user's setting information, the controller 50 drives the wireless charging transmitter 30 to transmit the wireless power to the corresponding mobile terminal that has transmitted the battery charge request signal. Will be supplied.

The sound wave signal transmission / reception configuration of the audible frequency boundary band may transmit and receive a charge request signal by utilizing components such as the speaker unit 71, the microphone unit 72, and the filter unit 73 provided in the existing portable terminal. There is a feature that does not require a separate charge request signal generator, a charge request signal transmitter, a charge request signal receiver.

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 those precise embodiments, and many alternatives, modifications, and variations will be apparent to those skilled in the art. I will understand.

Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

10: coil and matching circuit 20: wireless charging receiver
30: wireless charging transmission unit 40: the first switch
41: second switch 50: control unit
51: remaining amount check unit 52: device detection unit
60: battery 70: sound wave signal generation unit
71: speaker unit 72: microphone unit
73: filter unit 74: sound source analysis unit
100: power sharing device 200: portable terminal

Claims (6)

In the power sharing device mounted on the portable terminal to supply or receive power between the battery mounted on the portable terminal,
The power sharing device
A coil and matching circuit unit for transmitting or receiving wireless power;
A wireless charging receiver receiving and rectifying the wireless power applied from the coil and the matching circuit unit, converting the power into a DC power supply, and supplying the battery to the battery;
A wireless charging transmission unit for receiving the charging power of the battery and converting it into AC power and supplying it to the coil and the matching circuit unit to perform wireless power transmission to the outside;
Combining the coil and the matching circuit unit and the front end of the battery, respectively, connecting the coil and matching circuit unit and the wireless charging and receiving unit and the battery to configure the power receiving mode to charge the battery by receiving external wireless power or the coil and matching circuit unit and A first switch and a second switch constituting a power transmission mode for supplying power of the battery to the outside as the wireless charging transmission unit and the battery are connected;
A control unit for controlling the first switch and the second switch to select a power reception mode or a power transmission mode and to control driving of the wireless charging receiver and the wireless charging transmitter; Shared device.
The method of claim 1,
The control unit is a power sharing device capable of transmitting and receiving power between the terminal, characterized in that for driving in the power receiving mode or power transmission mode according to the user's setting information input.
The method of claim 2,
The control unit includes a remaining amount checker for detecting the remaining charge of the battery and a device detecting unit for detecting whether the other portable terminal for supplying wireless power is located within a predetermined range power sharing device capable of transmitting and receiving power between the terminal .
The method of claim 3, wherein
The control unit
When the user's setting information is input in the power transmission mode, the battery remaining amount is determined by determining whether the remaining battery capacity is greater than the predetermined remaining amount through the remaining amount checking unit, and whether there is another portable terminal capable of receiving wireless power through the device detecting unit. If there is more than the remaining amount and there are other portable terminals, the wireless power is transmitted by driving the power transmission mode, and when the remaining battery capacity is less than the set specific residual amount or there is no other portable terminal, the terminal is characterized by changing to the power reception mode and driving. Power sharing device that can transmit and receive power.
The method of claim 3, wherein
The power sharing device
A sound wave signal generation unit for generating a battery charge request signal as a sound wave signal of an audible frequency boundary band including its own mobile terminal identification information;
A speaker unit for outputting a sound wave signal generated by the sound wave signal generator;
A microphone unit for receiving sound wave signals output from other portable terminals;
A filter unit for filtering only a sound source of the audible frequency boundary band among the signals received by the microphone unit;
And a sound source analyzer configured to analyze the filtered sound source signal and extract a battery charge request signal including other portable terminal identification information.
6. The method of claim 5,
The control unit
When it is determined that rapid charge of the battery is required through the remaining amount checker, the sound wave signal generation unit is driven to output a battery charge request signal through a speaker unit, and when there is a battery charge request signal of another portable terminal through a sound source analyzer according to a setting. A power sharing device capable of transmitting and receiving power between the terminal characterized in that the wireless power transmission by driving the power transmission mode.

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