KR20170035518A - Wireless charging table with heat prevention layer capable of rapid charging - Google Patents

Abstract

In the charging table for charging a smartphone or a portable terminal, the charging table has an identification code for distinguishing each charging table, and a multimedia IC 65 The power supplied to the battery is supplied to the battery via a charging IC 68 for regulating power supply and is supplied to the battery 71 via the USB 71 via a DC DC Set UP 70 for adjusting an output voltage. A smart table capable of quick charging and capable of wireless charging is provided because power is supplied to a terminal (smartphone) 30 and a heat dissipation layer is further provided. The smartphone is used during rapid charging by effectively discharging the heat generated when it is equipped, but the problem of heat generation is solved, so that there is no problem in using the smartphone do.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a wireless recharging table,

The present invention relates to a wireless recharging table capable of rapid charging and having a heat dissipating layer, and more particularly, to a wireless recharging table used in a coffee shop, a restaurant, or a public place, The present invention also relates to a wireless charging table on which a heat dissipation layer is formed.

In the case of mobile phones such as smart phones and tablet PCs, it has established itself as a multimedia device that provides various functions and is becoming a necessity for modern people who are widely used in everyday life such as entertainment, education and business as well as communication functions.

Such a portable terminal (smart phone or tablet PC) is composed of a battery coupled to the main body to supply necessary power for operation of the main body and the main body. Generally, a portable terminal operates in a power saving mode in order to save battery when a user does not operate it. However, a portable terminal such as a smart phone can perform automatic position tracking through GPS, There is an inconvenience that the battery is rapidly consumed even if the battery is not used as a pushing function or the like so that it is necessary to charge the battery from time to time or to carry an extra spare battery.

In order to prevent the above-described battery discharge, the user of the portable terminal charges the battery using the battery charging device using the household power source. In addition, depending on the user, one or two spare batteries charged separately from the portable terminal equipped with the battery are carried, and when the battery installed in the portable terminal is discharged, the discharged battery is replaced with a spare battery .

Also, in view of such a reality, it is necessary to provide a charging table capable of wirelessly charging a portable terminal for convenience of customers in a restaurant, a cafe, or a convenience store.

Korean Patent Laid-Open Publication No. 10-2014-0073390 discloses a portable terminal capable of accommodating at least one or more chargers having an output terminal that can be connected to a display and a portable terminal, A charging mode in which the charger is connected to the adapter and supplied with power, and a charging mode in which the charger is connected to the portable terminal while being separated from the adapter, Wherein the display device is operated in a discharge mode for supplying power to the terminal and displays predetermined contents through the display in the discharge mode.

Korean Patent No. 10-1408873 discloses that the connection portion of the charger includes an upper electrode formed on the upper surface of the body portion and including a positive electrode and a negative electrode and a lower electrode formed on the lower portion of the body portion corresponding to the upper electrode, Wherein the upper electrode and the lower electrode are formed at mutually symmetrical positions so that the upper electrode is inserted into the lower electrode so that mutual attraction between the two adjacent chargers And the charger is connected to the portable terminal by being separated from the adapter so that the power charged through the adapter can be supplied to the portable terminal. Quot; portable terminal charging device "

However, a wireless recharging table has not yet been proposed to charge the smartphone directly on the wireless recharging table and allow advertisements to be displayed on the smart phone, thus allowing advertisements to be displayed on the smartphone, Development of a charging table that does not require a display is urgently required.

Prior Art 1: Korean Patent Publication: 10-2014-0073390 (June 16, 2014) Prior Art 2: Korea registered patent: 10-1408873 (June 11, 2014)

A smart table capable of wireless charging can be provided. However, the smart table is provided with a rapid charging function and is provided with a heat dissipation layer for better heat dissipation. Since the rapid charging is possible and the heat dissipation layer is formed, The purpose is to effectively discharge excess heat to the outside

The above object is achieved by a charging table for charging a smart phone or a portable terminal, wherein the charging table has an identification code for distinguishing each of the charging tables, and a multimedia IC 65 The power supplied to the battery is supplied to the battery via a charging IC 68 for regulating power supply and is supplied to the battery 71 via the USB 71 via a DC DC Set UP 70 for adjusting an output voltage. And power is supplied to the terminal (smartphone) 30, and a heat-radiating layer is further provided.

The charging part (10) is mounted on a pedestal (50), and the pedestal can be rotated to a position of a charging table and a slant. A rapid charging is possible and a heat radiating layer is formed. The angle of the table 20 may be either 0 degrees or 50 degrees so that the pedestal can be positioned inclined from 0 to 50 degrees.

According to the present invention, a smart table capable of wireless charging can be provided. However, since the smart phone is used during rapid charging by effectively discharging the heat generated when the quick charging function is provided, the problem of heat generation is solved. There will be no problem in the case of FIG.

1 is a view of an embodiment showing a charging table of the present invention.
FIG. 2 and FIG. 3 are views showing embodiments of a connection method between a server and a charging table.
4 is a diagram of an embodiment showing a block diagram used in the present invention.
5 and 6 are views of an embodiment having a pedestal for providing a heating layer.
FIGS. 7 and 8 are views of an embodiment in which a heating layer is formed. FIG.
9 is a diagram of an embodiment showing a wireless charging configuration for achieving rapid charging.
Figure 10 is a flow diagram of the present invention for achieving rapid charging.
11 is a diagram of an embodiment showing how a live part is mounted on a table

Hereinafter, a charging table capable of displaying an advertisement according to an embodiment of the present invention will be described in detail.

The detailed description of common techniques necessary for explaining the present invention can be omitted.

The present invention provides a charging table capable of displaying an advertisement that can be provided with a charging table capable of being charged wirelessly in a wireless charging period, and also capable of displaying advertisements by centrally controlling various advertisement contents.

In addition, although a smart table capable of wireless charging can be provided, a rapid charging function is provided, and a heat dissipation layer is provided so as to discharge heat more rapidly. Since a rapid charging is possible and a heat dissipation layer is formed, The goal is to effectively dissipate excess heat to the outside

1 is a view of an embodiment showing a charging table of the present invention.

1, when the wireless charging pad 10 is mounted on the charging table 20 and the smartphone (or the portable terminal) 30 is placed on the wireless charging pad 10 in the charging table, Is charged. At this time, the wireless charging pad 10 is a film or plate having an antenna coil for transmitting power wirelessly, and a plastic film or a plastic plate is wrapped with an antenna coil, and means a wireless charging pad.

In another aspect of the present invention, an advertisement is displayed on the display of the smartphone 30.

FIG. 2 and FIG. 3 are views showing embodiments of a connection method between a server and a charging table.

2 is a diagram of an embodiment with a local server. The server 150 is connected to the local server 173 via wired / wireless communication or wired / wireless Internet and the local server 173 is connected to the charging table 20 through short- do. At this time, wired / wireless communication, wired / wireless Internet, and short distance communication are generally applied to the present invention.

The central server 150 is a server that controls all the local servers 173 and communicates with the local servers through communication. The local server 173 is provided in each office (coffee shop, (20-1), (20-2), (20-3) - - - (20-n) installed therein.

FIG. 3 is a diagram of an embodiment in which a local server is not provided. The central server 150 is connected to all the charging tables 20-1, 20-2, 20-3, ..., 20- In which information is directly exchanged through the Internet.

Figures 4 to 6 are views of embodiments showing block diagrams used in the present invention.

4 is a diagram of an embodiment showing a block diagram of a filling system provided in the charging table 20. In Fig. Although the charging system is not shown in the drawings, the present invention refers to a system that supplies power to a charging pad, provides advertisement data to a smart phone, and transmits / receives information to / from a server or a local server. Therefore, the charging system is mounted in the charging table 20 in principle.

A multimedia IC 65 functioning as a central control unit is provided in the charging table 20. [ The charging table 20 is provided with an adapter (not shown in the present invention) for converting AC power into DC power and eventually producing an output of 12V 6A, The power supply can be supplied through this. The power supplied to the battery through the adapter is supplied to the battery via the charging IC 68 that adjusts the power supply.

Power is supplied to the portable terminal (smartphone) 30 via the USB 71 via the DC DC Set UP 70 for adjusting the output voltage.

In addition, a memory 68 for storing an operating program algorithm or information of the charging table 20, a button 64 for controlling the portable charger (in the present invention, an on / off button or a charging speed is adjusted A button is provided,

5 is a view of an embodiment having a pedestal for providing a heating layer.

As shown in the drawing, the charging unit 10 is mounted on the pedestal 50, and the pedestal can be rotated to the charging table and the position of the inclination. That is, the angle between the pedestal 50 and the charging table 20 may be 0 degrees or 50 degrees so that the pedestal can be inclined from 0 degrees to 50 degrees.

In addition, a support bar exists to support the support material 50 so that the smartphone 30 can be placed on the pedestal 50.

Figs. 6 and 7 are views of an embodiment in which a heating layer is formed. Fig.

As shown in the drawing, a heat dissipation layer 60 is provided below the pedestal 50, and a charging part 10 is provided on the pedestal.

The heat radiation layer 60 includes a heat radiation layer 61, a heat conduction layer 62, a heat conduction adhesion layer 63, and a release film layer 64, which are excellent in electrical insulation and heat radiation characteristics.

The heat radiation layer 61 includes at least one material selected from the group consisting of porous magnesium hydroxide, magnesia, silicon dioxide, zirconium and silicate compounds excellent in electrical insulation and thermal conductivity, graphite excellent in electrical conductivity and thermal conductivity, carbon nanotubes, and graphene An oil-based composition comprising an inorganic material and an inorganic pigment; An organic polymeric material selected from the group consisting of polyvinyl alcohol, methylcellulose, ethylcellulose, methylnitrocellulose, ethylnitrocellulose, acryl-urethane copolymer, epoxy-urethane copolymer and water-soluble urethane resin; And an organic / inorganic hybrid composition for a heat radiation sheet.

The binder constituting the heat radiation layer 61 is not limited as long as it has adhesiveness and can be selected from natural resin or synthetic resin. As the binder, for example, one or more selected from resins such as an acrylic type, an epoxy type, a urethane type and a urea type can be used.

The heat radiation layer 61 may be formed by coating a thermally conductive composition containing 5 to 200 g of a thermally conductive filler on the assumption that 100 g (grams) of the binder is used, though it is not particularly limited. The thermally conductive composition for forming the heat radiation layer 10 may further contain, in addition to the thermally conductive filler and the binder, a photoinitiator, a curing agent, a dispersant, a solvent, an antioxidant, a defoamer, a pigment, a brightener, a flame retardant, . The coating of the thermally conductive composition may be carried out using a general thin film coating method, or a gravure coating method may be used.

The heat radiation layer 61 is formed at the outermost edge of the heat radiation sheet according to the present invention, and is exposed to the outside. The heat radiation layer 10 may have a thickness of 5 탆 to 100 탆. If the thickness is less than 1 占 퐉, scratches due to external force may occur and heat dissipation efficiency may deteriorate. If the thickness is excessively greater than 100 占 퐉, the flexibility of the heat radiation sheet may be reduced and it may be undesirable in terms of cost . And preferably has a thickness of 3 to 20 占 퐉.

For example, in the inorganic filler having a large amount of ultrafine pores, the heat radiation layer type organic hybrid composition preferably contains 60 to 80% by weight of a silicate compound, 0.5 to 5.0% by weight of carbon nanotubes, 0.5 to 5.0% 1 to 10% by weight of an inorganic pigment, 5.0 to 10% by weight of ethyl cellulose in an organic substance, 5.0 to 10% by weight of ethylnitrocellulose, and 0.5 to 1.0% by weight of a dispersion stabilizer.

As the dispersion stabilizer, one selected from polyacrylate, bentonite, fumed silica and zeolite is used.

As the inorganic pigment, one of zinc, manganese, magnesium, titanium, and ferric oxide may be selected and used.

In addition, the above-mentioned thermosetting organic / inorganic hybrid composition for a thin film heat radiation sheet is coated on one side or both sides of a mat surface of the heat conductive layer by a method of treatment by a comma roll coating, a doctor blade and a gravure method to form a uniform heat radiation layer It is possible to mass-produce thermally conductive and heat radiation thin sheet.

In addition, the heat radiation layer 61 includes a filler to take heat of the heat conduction layer 62 and discharge the heat to the outside to achieve efficient heat dissipation. The filler may have a particle size of 0.1 to 5 micrometers Mu m). ≪ / RTI >

In order to maximize the heat radiation effect and the adhesion property of the coating layer due to the maximization of the specific surface area when the heat radiation layer is coated with the excellent thermal conductivity, the heat conduction layer 62 is provided with an electrolytic copper foil having a highly developed Matt side and an electrolytic copper foil Alternatively, an aluminum plate subjected to chemical etching, anodizing or sanding on one surface or both surfaces thereof, or a magnesium metal plate sanding or embossed on its surface may be used.

Further, the heat conduction layer 62 may be composed of one or two or more alloys selected from metals. Specifically, for example, the metal layer may be formed of a metal selected from the group consisting of Al, Au, Ag, Cu, Ni, Sn, Zn, Fe) and the like (single metal) or two or more alloys selected therefrom (for example, stainless steel). Among these, aluminum (Al) or aluminum (Al) alloys favorable in terms of weight and price may be preferably used. The thermally conductive layer is not particularly limited, but may have a thickness of 1 占 퐉 (micrometer) to 100 占 퐉. At this time, when the thickness of the metal layer is less than 1 탆, the heat dissipating ability and the supporting force may be insignificant. When the thickness is more than 100 탆, the flexibility of the heat dissipating sheet may be decreased.

The heat conduction adhesive layer 63 is formed by mixing a pressure-sensitive adhesive resin selected from acrylic, silicone, rubber, acryl-urethane copolymer and polyurethane resin and at least one selected from the group consisting of an aluminum series, a silicic acid series oxide and a zinc- And has the function of attaching and fixing the heat radiation sheet to the heat generating element and the heat radiation sheet without air gap and the function of effectively transmitting heat perpendicularly to the heat conductive layer in contact with the polymer layer.

The adhesive layer 63 may be composed of a pressure sensitive adhesive commonly used in the art, and may be selected from, for example, acrylic, urethane and silicone pressure sensitive adhesives. And preferably an acrylic pressure-sensitive adhesive. Further, the adhesive layer 30 preferably also has heat dissipation. For example, the adhesive layer 30 may be formed by coating a thermally conductive adhesive containing a pressure-sensitive adhesive and a thermally conductive filler.

At this time, the thermally conductive filler included in the adhesive layer 63 is not limited as long as it has thermal conductivity. The thermally conductive filler may have a particle size of from 0.1 nanometer (nm) to 5 micrometer (mu m) as a particle image. The thermally conductive filler may be a metal, an inorganic material, a carbon material, or a mixture thereof. The thermally conductive filler specifically includes at least one of aluminum (Al), nickel (Ni), copper (Cu), tin (Sn), zinc (Zn), tungsten (W), iron (Fe) Metal powders such as; Calcium carbonate (CaCO3), aluminum oxide (Al2O3), aluminum hydroxide (Al (OH) 3), silicon carbide (SiC); Inorganic powders such as boron nitride (BN) and aluminum nitride (AlN); As the carbon material, at least one selected from graphite, graphene, carbon nanotubes (CNT), and organic powders such as carbon nanofibers (CNF) can be used. The thermally conductive filler preferably comprises at least one carbon material selected from the group consisting of graphite, graphene, carbon nanotube (CNT), and carbon nanofiber (CNF). These thermally conductive fillers can be mixed in a proper amount within a range that does not deteriorate the adhesive strength of the pressure-sensitive adhesive.

In addition, the thermally conductive adhesive may further include a dispersing agent for uniform dispersion of the thermally conductive filler, a crosslinking agent for controlling the adhesive property, and the like. In addition, the thermally conductive pressure-sensitive adhesive may further optionally contain an antioxidant, a defoaming agent, a thickener, a flame retardant, and the like in a range that does not adversely affect the adhesive strength. The pressure-sensitive adhesive layer 40 preferably has a thickness in the range of 3 to 60 占 퐉. If the thickness of the pressure-sensitive adhesive layer 40 is less than 3 mu m, the adhesive force may be lowered, and if it exceeds 60 mu m, the heat radiation effect may be deteriorated.

As the release film layer 64, a paper type of polyester film type or art paper coated with a resin is used.

That is, the heat dissipation layer of the present invention is a layer that serves to protect the charging table when it comes in contact with the charging table.

On the other hand, the heat-radiating layer of the present invention is produced by the following method.

 The composition of the heat radiation layer 61 is agitated. At this time, the composition is the composition presented in the previous embodiment of the present invention, and in the case of stirring, it is stirred through a usual stirrer.

Then, the thermally conductive layer 62 is coated with the agitated composition, followed by hot air drying to complete the heat radiation layer. At this time, the composition coating is the one proposed in one embodiment of the present invention, or the conventional coating method is used. Then, hot air drying is performed at about 150 to 180 ° C to form a heat radiation layer 61 on one side of the heat conduction layer 62.

On the other hand, the adherent layer composition is stirred. At this time, the adhesive composition proposed in the present invention is agitated to such an extent that the adhesive composition is mixed well by a usual method.

Then, the dried adhesive layer composition is coated on the release paper and then the hot air is dried. The adhesive layer 63 is coated on one side of the release film 64 (releasing paper) by hot air drying at about 100 to 120 ° C, .

Finally, the heat radiation layer 62 coated with the heat radiation layer and the release film 40 coated with the pressure-sensitive adhesive layer are laminated and combined to finally complete the heat radiation layer of the present invention.

8 is a diagram of an embodiment showing a wireless charging configuration for achieving rapid charging.

8 is a general structure for supplying power to the wireless charger. First, the receiving unit 200 has a structure in which antenna loop coils 52 and 53 are connected in series to a capacitor C, And the coil 31 is connected in parallel with the capacitor C. The only difference is that the transmitting unit 300 is further provided with a resonance filter, and the resonance filter is configured as a structure in which the coil 52 and the capacitor C are connected in series. It is a matter of course that the series connection and the parallel connection of the loop coil and the capacitor can be changed.

Generally, a wireless charger uses a wireless power consortium (WPC) scheme. In order to transmit a wireless power energy of a WPC scheme, the following conditions are generally satisfied.

"Micro Henry - 12 micro-Henry", inductance value of the coil: 3.5 V, voltage: 7-15 V (receiver part basis), frequency: 100-200 kHz, current: 5 V

On the other hand, the coil and the capacitor are connected in series. In the wireless power energy transmission, the medium is an antenna loop coil 52 (53), and the antenna coil 52 (53) has a structure connected to a capacitor and is connected in series.

On the other hand, the KTP system developed by our company has the following characteristics.

"Voltage: 7-24V (based on receiver), frequency: 1MHz - 6.78MHz, current: 5V (1A), power: 5W, coil inductance value: 600nH (Nano Henry)

In this case, the voltage and current values shown above do not mean that they exactly correspond to the above numbers, but they do indicate the range.

However, the biggest difference between the WPC and KTP systems is the difference between the coil inductance and frequency. First, the reference can be set to 1 MHz from the difference of the frequency values. That is, the WPC method is low frequency less than 1 MHz (Mega Hertz) and the KTP method is high frequency more than 1 MHz (Mega Hertz).

However, the WPC method uses a frequency of 100 - 200 KHz and the KTP method uses a high frequency of 6 - 8 MHz or more.

The WPC method is "8 micro Henry-12 micro Henry ", and the KTP method is" 600 nano Henry-2 micro Henry "

The KTP scheme having the above characteristics has considerable advantages. For example, a high-frequency component is used for a component that oscillates a frequency, thereby enabling downsizing of the component (generally, the high frequency can reduce the size of the component), reducing the inductance value of the coil, A coil formed by printing on a PCB substrate (or a resin substrate) can be used.

By forming a coil on the substrate, it is advantageous in mass production and can reduce the cost. Also, the number of turns of the coil (turns, the number of turns) is more than 50 times for the WPC method, and the KTP method is also possible for less than 50 times.

On the other hand, the number of turns is a number referred to as a standard to be applied to a mobile phone device. In general, a mobile phone device is a number generally calculated when the area is within a maximum of 100 cm square.

9 is a flow diagram of the present invention for achieving rapid charging.

The wireless charging system includes a transmitting unit for transmitting power energy and a receiving unit for receiving power energy. When a signal for requesting transmission of power energy is sent to a transmitting unit, The charging request signal is detected and the charging signal is sent to the receiving unit. That is, the signal received through the short distance communication module 67 in the receiver through the general procedure is sent to the controller 65, and the controller 65 exchanges signals with the transmitter in a predetermined method. Step 152)

Then, the interconnection signal is exchanged by a predetermined method, and then the power energy is received (Step 153). In this case, the present invention provides a design structure capable of receiving different types of power energy.

That is, if the method of the transmitter can be distinguished based on the mutual local communication signal, the corresponding matching part is selected and activated, so that the coil connected to the matching part is activated. (Steps 154 and 160)

As a result, the control unit 65 receives power energy through the antenna loop coil connected to the matching part selected by the control unit 65.

That is, a signal that can distinguish the scheme from the mutual local communication signal may be included, and if the scheme is distinguished, the corresponding matching part can be directly selected. Here, the corresponding matching part is selected according to the description of the block diagram of FIG. 1 (it is possible to proceed to step 160 in step 154 in FIG. 6).

On the other hand, if the system can not be selected through the short-range communication signal, the system can be selected by analyzing the magnitude value of the wireless power energy transmitted from the transmitter. (Steps 156 and 158) As shown in FIG. 5, the WPC method and the KTP method are different in voltage, frequency, impedance, or inductance value, and the values are analyzed to determine what method is used. This determination is made by the control unit 65 by a predetermined method. When the determination is completed, the corresponding matching part is selected (step 160)

The reason why the above determination can be performed by the control unit 65 is that the feature value for each method is previously stored in the control unit 65 or the memory (in the present invention, it is natural that a memory device is provided to perform the determined algorithm, And determines which method is used based on the stored value.

When the corresponding matching part is selected and activated, the corresponding coil is also activated to receive the wireless power energy. When the wireless power energy is received through the antenna coils 52 and 53, the converter is controlled through the control unit 65 to generate a voltage of 5V which allows the battery to be finally charged, (Step 166)

That is, the control unit 65 determines the ratio that the converter should convert according to the selected method, converts the voltage or power according to the ratio, and finally outputs it. (Step 168)

In this case, the flowchart of FIG. 10 provides a method of receiving power energy transmitted by two types of transmission units in a wireless power system. That is, when the power energy is transmitted in one of the two methods, the receiving unit is selected in such a manner as to receive the transmitted power energy, and can receive the power energy.

However, when the receiving unit selects a method of receiving the transmitted power energy, it is not necessarily required to select one of the two methods. That is, if the inductance, the impedance, the voltage, the frequency, and the local communication code of the coil can be distinguished and selected, one of the three types of transmitted power energy is selected, As a result, the receiving unit can receive power energy.

For example, the transmitting unit may have a method other than the WPC method, and thus the transmitting unit can transmit the power energy in a manner other than the two methods. Also in this case, it is determined how the electric energy transmitted through the inductance, impedance, voltage, frequency and communication code of the coil is, and the receiving portion of the present invention is selected in such a manner, I can get it.

10 is a diagram of an embodiment showing how a live part is mounted on a table

In the charging table 20 of the present invention, the electronic component of the block diagram of FIG. 4 is mounted on the component box 70, the component box 70 is mounted on the bottom of the charging table, and the hole 21 is formed in the charging table And the electric wire connects the component box 70 and the charging unit 10 through the hole.

10: Wireless Charging Pad, 20 Charging Tables
30: Smartphone 61: Display
62: wireless coil 150: server
173: Local server 63: Input device

Claims (4)

In a charge table for charging a smartphone or a portable terminal, the charge table has an identification code for distinguishing each of the charge tables,
A power supply is supplied to the battery through a charging IC 68 for regulating the supply of power, and the output voltage is adjusted Power is supplied to the portable terminal (smartphone) 30 through the USB 71 via the DC DC Set Up 70,
And a heat dissipation layer formed on the heat dissipation layer. The wireless charging table as claimed in claim 1, wherein the charging unit (10) is mounted on a pedestal (50), and the pedestal is rotatable to a position of a charging table and a tilt. 3. The charging device according to claim 2, wherein the pedestal (50) and the charging table (20) may be at an angle of 0 degrees or 50 degrees so that the pedestal can be inclined from 0 to 50 degrees. A wireless charging table with a heat spreadable layer. The wireless charging table as claimed in claim 2, wherein a heat dissipation layer (60) is provided under the pedestal (50) and a charging part (10) is provided on the pedestal (50).

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