Television set and power supply method thereof

Abstract

The present invention discloses a television set and a power supply method thereof. The television set includes: a television box, a transmitting module, a receiving module, a driving module and a display screen; the television box is electrically connected to the transmitting module and wirelessly connected to the driving module, the television box is connected to an external input signal, and is used to provide a first power supply voltage to the transmitting module, and decodes the external input signal to obtain a parsing signal and send it to the driving module; the transmitting module is arranged on the back of the display screen, and is used to receive the first power supply voltage output by the television box and convert it into an alternating magnetic field; the receiving module is arranged on the display screen and wirelessly connected to the transmitting module, and is used to couple the alternating magnetic field generated by the transmitting module and convert it into electrical energy to power the driving module; the driving module is connected to the television box, and is used to receive the parsing signal and display it on the display screen. The present invention adopts wireless power supply mode for power supply, and the structure of the television set is more compact. After installation, there will be no gap between the display screen and the wall.

Description

Technical Field

[0001] The present invention relates to the technical field of display devices, and in particular to a television set and a power supply method thereof. Background Art

[0002] As people's living standards improve, they are not only concerned about the basic functions of electronic products, but also have higher and higher requirements for appearance and user experience. TV products are highly homogenized, so how to attract consumers' attention and maintain leading technological innovation has become a constant pursuit for major TV manufacturers.

[0003] Currently, TVs have been designed to be ultra-thin. TVs can be hung on the wall and connected to the display screen through a TV box to realize power supply and related control of the display screen. However, after the display screen is connected to the TV box, a corresponding interface needs to be set on the screen, and a connecting cable is required between the display screen and the TV box, resulting in the structure of the TV not being compact enough, and there will be a gap between the TV and the wall after the TV is hung on the wall.

[0004] Therefore, the prior art still needs to be improved and developed. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a television set and a power supply method thereof, so as to solve the problem that the traditional wall-mounted television set is not compact enough and there is a gap between the television set and the wall after installation.

[0006] The technical solution of the present invention is as follows:

[0007] A television set comprises: a television box, a transmitting module, a receiving module, a driving module and a display screen; wherein:

[0008] The TV box is connected to the transmitting module by a connecting line and is wirelessly connected to the driving module. The TV box receives an external input signal, and is used to provide a first power supply voltage to the transmitting module, and decode the external input signal to obtain a parsed signal and send it to the driving optical module;

[0009] The transmitting module is arranged on the back of the display screen, and the transmitting module is used to receive the first supply voltage and convert the first supply voltage into an alternating magnetic field;

[0010] The receiving module is arranged on the display screen and is wirelessly connected to the transmitting module, and the receiving module is used to couple the alternating magnetic field generated by the transmitting module and convert it into electrical energy to power the driving module;

[0011] The driving module is wirelessly connected to the TV box, and the driving module is used to receive the analysis signal and display it on the display screen.

[0012] According to a further configuration of the present invention, the TV box includes: a filtering unit, a first rectifying unit, a boosting unit, a first DC conversion unit, a second DC conversion unit, a first mainboard and a first Bluetooth unit;

[0013] The filtering unit is connected to the mains power supply and is connected to the first rectifying unit;

[0014] The first rectifying unit is connected to the boosting unit;

[0015] The boost unit is connected to the first DC conversion unit and the second DC conversion unit respectively, and the boost unit boosts the rectified and filtered mains power supply and outputs it in two paths to the first DC conversion unit and the second DC conversion unit;

[0016] The first DC conversion unit is connected to the first mainboard, and the first DC conversion unit is used to provide a second power supply voltage for the first mainboard;

[0017] The second DC conversion unit is connected to the transmitting module, and the second DC conversion unit is used to provide the first power supply voltage and the third power supply voltage to the transmitting module;

[0018] The first mainboard is connected to the first Bluetooth unit and the second DC conversion unit respectively. The first mainboard is used to control the second DC conversion unit to power the transmitting module, and to control the first Bluetooth unit to transmit the parsed information obtained after decoding the external input signal to the driving module.

[0019] According to a further configuration of the present invention, the transmitting module includes: a first driving unit, a detection unit, a first power supply unit, a first controller and a transmitting coil; wherein,

[0020] The first driving unit is connected to the second DC conversion unit and the transmitting coil respectively, and the first driving unit is used to drive the transmitting coil to generate an alternating magnetic field according to the first supply voltage output by the second DC conversion unit;

[0021] The first power supply unit is connected to the second DC conversion unit, the drive unit and the first controller respectively, and the first power supply unit is used to output a fourth power supply voltage and a fifth power supply voltage according to the third power supply voltage output by the second DC conversion unit to supply power to the first drive unit and the first controller respectively;

[0022] The first controller is connected to the first driving unit and the detection unit respectively. The first controller is used to control the first driving unit to drive the transmitting coil, and to collect the voltage and current of the transmitting coil detected by the detection unit for negative feedback control.

[0023] According to a further configuration of the present invention, the receiving module comprises: a receiving coil, a second rectifying unit, a third DC conversion unit, and a second controller; wherein,

[0024] The receiving coil is connected to the second rectifying unit, and the receiving coil is used to couple the alternating magnetic field generated by the transmitting coil and convert it into electrical energy to output to the second rectifying unit;

[0025] The second rectifying unit is connected to the third DC conversion unit and the second controller respectively, and the second rectifying unit is used to rectify the electric energy output by the receiving coil and output a sixth power supply voltage and a seventh power supply voltage to supply power to the third DC conversion unit and the second controller respectively;

[0026] The third DC conversion unit is connected to the driving module and the second rectifying unit respectively, and the third DC conversion unit is used to convert the sixth power supply voltage into an eighth power supply voltage to supply power to the driving module;

[0027] The second controller is connected to the second rectifying unit, and is used for collecting the voltage and current of the receiving coil to perform negative feedback control.

[0028] According to a further configuration of the present invention, the driving module includes: a second mainboard, a constant current unit, a logic control board, a second Bluetooth unit and a backlight unit; wherein,

[0029] The second Bluetooth unit is connected to the second mainboard, and the second Bluetooth unit is used to receive the parsing signal sent by the first Bluetooth unit and output it to the second mainboard;

[0030] The second mainboard is connected to the second rectifier unit, the second Bluetooth unit and the logic control board respectively, and the second mainboard is used to display the analyzed signal fed back by the second Bluetooth unit on the display screen through the logic control board under the drive of the eighth power supply voltage;

[0031] The constant current unit is connected to the second rectifying unit, the backlight unit and the second mainboard respectively, and is used to boost the sixth power supply voltage to output a ninth power supply voltage and drive the backlight unit under the control of the second mainboard.

[0032] According to a further configuration of the present invention, the transmitting coil comprises: a first coil and a first magnetic shielding layer; the first magnetic shielding layer is arranged along the circumference of the first coil;

[0033] The receiving coil includes: a second coil and a second magnetic shielding layer; the second magnetic shielding layer is arranged along the circumference of the second coil.

[0034] According to a further configuration of the present invention, both the first magnetic shielding layer and the second magnetic shielding layer are cylindrical.

[0035] A method for powering a television set applied to the television set described above comprises the steps of:

[0036] The TV box receives a power-on signal, outputs a first power supply voltage to the transmitting module, receives an external input signal, decodes the external input signal to obtain a parsing signal, and then sends it to the driving module;

[0037] The transmitting module receives the first power supply voltage output by the TV box and converts it into an alternating magnetic field;

[0038] The receiving module couples the alternating magnetic field generated by the transmitting module and converts it into electrical energy to power the driving module;

[0039] The driving module receives the analysis signal output by the TV box and displays it on a display screen.

[0040] According to a further configuration of the present invention, the television power supply method further comprises:

[0041] The TV box detects that the standby button is pressed, and outputs a standby instruction to the receiving module;

[0042] The receiving module controls the display screen to be turned off through the driving module according to the shutdown signal, and sends the display screen turning off information to the TV box;

[0043] The TV box stops outputting the first power supply voltage according to the display screen shutdown information;

[0044] The receiving module stops working and the television enters a standby state.

[0045] According to a further configuration of the present invention, the television power supply method further comprises:

[0046] The TV box receives a remote standby command sent by a remote controller or voice, and sends the remote standby command to the receiving module;

[0047] The receiving module controls the display screen to be turned off through the driving module according to the remote standby instruction, and sends the display screen turning off information to the TV box;

[0048] The TV box stops outputting the first power supply voltage according to the display screen shutdown information;

[0049] The receiving module stops working and the television enters a standby state.

[0050] The present invention provides a television set and a power supply method thereof, wherein the television set comprises: a television box, a transmitting module, a receiving module, a driving module and a display screen; wherein the television box is connected to the transmitting module by a connecting line and is wirelessly connected to the driving module, the television box receives an external input signal, and is used to provide a first power supply voltage to the transmitting module, and decode the external input signal to obtain a resolution signal and send it to the driving optical module; the transmitting module is arranged on the back of the display screen, and is used to receive the first power supply voltage and convert the first power supply voltage into an alternating magnetic field; the receiving module is arranged on the display screen and is wirelessly connected to the transmitting module, and is used to couple the alternating magnetic field generated by the transmitting module and convert it into electrical energy to power the driving module; the driving module is wirelessly connected to the television box, and is used to receive the resolution signal and display it on the display screen. The present invention powers the transmitting module through a TV box, and the transmitting module and the receiving module use wireless power supply to power the driving module, and the display screen is driven by the driving module. In this way, the connecting line between the transmitting module and the receiving module can be hidden in the wall, and there is no need to set an interface on the display screen. The TV structure is more compact and can be set close to the wall. After the installation is completed, there will be no gap between the display screen and the wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary personnel in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0052] Figure 1 It is a principle block diagram of the television in the present invention.

[0053] Figure 2 It is a principle block diagram of the TV box and the transmitting module in the present invention.

[0054] Figure 3 It is a principle block diagram of the receiving module, the driving module and the display screen in the present invention.

[0055] Figure 4 It is a schematic diagram of a television set installed on a wall in the present invention.

[0056] Figure 5 It is a top view of the transmitting coil in the present invention.

[0057] Figure 6 It is a cross-sectional view of the transmitting coil in the present invention.

[0058] Figure 7 It is a cross-sectional view of the receiving coil in the present invention.

[0059] Figure 8 It is a flow chart of the method for powering a television set in the present invention.

[0060] The symbols in the accompanying drawings are: 100, TV box; 101, filter unit; 102, first rectifier unit; 103, boost unit; 104, first DC conversion unit; 105, second DC conversion unit; 106, first mainboard; 107, first Bluetooth unit; 108, port; 200, transmitter module; 201, drive unit; 202, detection unit; 203, first power supply unit; 204, first controller; 205, transmitter coil; 2051, first coil; 5 052, first magnetic shielding layer; 300, receiving module; 301, receiving coil; 3011, second coil; 3012, second magnetic shielding layer; 302, second rectifying unit; 303, third DC conversion unit; 304, second controller; 400, driving module; 401, second main board; 402, constant current unit; 403, logic control board; 404, second Bluetooth unit; 405, backlight unit; 500, display screen; 600, connecting line; 700, wall. DETAILED DESCRIPTION

[0061] The present invention provides a television set and a power supply method thereof. To make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0062] In the embodiments and the scope of the patent application, unless the text specifically defines the article, "a", "an", "the" and "the" may also include plural forms. If there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0063] It should be further understood that the term "comprising" used in the specification of the present invention refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof. It should be understood that when we refer to an element as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element, or there can be intermediate elements. In addition, the "connection" or "coupling" used herein can include wireless connection or wireless coupling. The term "and / or" used herein includes all or any unit and all combinations of one or more associated listed items.

[0064] It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as generally understood by those skilled in the art in the art to which the present invention belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have meanings consistent with the meanings in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless specifically defined as herein.

[0065] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0066] The inventors have found that due to consumers' demand for appearance, there is an urgent need to develop a wireless power supply TV to bring consumers the ultimate appearance experience, while also solving the problems of low conversion efficiency and electromagnetic radiation.

[0067] In view of the above technical problems, the present invention provides a television and a method for powering the television, which solves the problems of low power and low efficiency of traditional wireless power supply, and adopts magnetic shielding technology to solve the problem of electromagnetic radiation, and solves the fear of electromagnetic radiation of wireless power supply in consumers' minds. At the same time, the television provided by the present invention can make the television seamlessly attached to the wall, giving consumers an extremely aesthetic appearance experience.

[0068] Please also see Figures 1 to 7 , the present invention provides a preferred embodiment of a television.

[0069] like Figures 1 to 4As shown, a television set provided by the present invention includes: a TV box 100, a transmitting module 200, a receiving module 300, a driving module 400 and a display screen 500; wherein the TV box 100 is electrically connected to the transmitting module 200 by a connecting line 600 and wirelessly connected to the driving module 400, and the TV box 100 receives an external input signal for providing a first power supply voltage to the transmitting module 200, and decodes the external input signal to obtain a parsing signal and sends it to the driving module 400; the transmitting module 200 is arranged on the back of the display screen 500, and the transmitting module 200 is used to receive the first power supply voltage output by the TV box 100 and convert the first power supply voltage into an alternating magnetic field; the receiving module 300 is arranged on the display screen 500 and wirelessly connected to the transmitting module, and the receiving module 300 is used to couple the alternating magnetic field generated by the transmitting module 200 and convert it into electrical energy to power the driving module 400; the driving module 400 is wirelessly connected to the TV box 100 for receiving the parsing signal and displaying it on the display screen 500.

[0070] Specifically, the television provided by the present invention can be installed on a wall. During installation, the transmitting module 200 is installed on the back of the display screen 500 and embedded in the wall 700, and the receiving module 300 is arranged in the display screen 500. The TV box 100 is electrically connected to the transmitting module 200 through a connecting line 600, and the connecting line 600 can be buried in the wall 700. There is no interface on the display screen 500, and all ports 108, such as USB, HDMI and other ports are all arranged on the TV box 100. The back of the display screen 500 is installed against the wall 700. After the installation is completed, the display screen 500 can be close to the wall, and there will be no gap between the two, so that the overall shape of the display screen 500 can not only play a role in shielding electromagnetic radiation, but also make the overall structure of the TV more compact, thereby improving the overall aesthetics.

[0071] The TV box 100 provides a first power supply voltage for the transmitting module 200, and decodes the signal through ports such as USB and HDMI. After decoding, the external input signal can be transmitted to the driving module 400. The transmitting module 200 transmits energy under the drive of the first power supply voltage, and the receiving module 300 can receive and couple the energy emitted by the transmitting module 200 and convert it into electrical energy to power the driving module 400. The display screen 500 displays the decoded external input signal under the drive of the driving module 400. Among them, the first power supply voltage provided by the TV box 100 is used to power the transmitting module 200. The range of the first power supply voltage is 350-400V. In one implementation, it can be 380V. High voltage means small current, which reduces the driving loss of the transmitting module 200 and the line loss on the connecting line 600, improves the efficiency of the transmitting module 200, thereby improving the wireless charging conversion efficiency and greatly reducing the system power consumption of the TV.

[0072] See also Figure 1 and Figure 2 In a further implementation of an embodiment, the TV box 100 includes: a filtering unit 101, a first rectifying unit 102, a boosting unit 103, a first DC conversion unit 104, a second DC conversion unit 105, a first mainboard 106 and a first Bluetooth unit 107; the filtering unit 101 is connected to the mains power supply and is connected to the first rectifying unit 102; the first rectifying unit 102 is connected to the boosting unit 103; the boosting unit 103 is respectively connected to the first DC conversion unit 104 and the second DC conversion unit 105, and the boosting unit 103 boosts the mains power after rectification and filtering and outputs it in two ways to the first DC conversion unit 104 and the second DC conversion unit 105; the first DC conversion unit 104 is connected to the first mainboard 106, and the first DC conversion unit 104 is used to provide the second power supply voltage for the first mainboard 106; the second DC conversion unit 105 is connected to the transmitting module 200, and the second DC conversion unit 105 is used to provide the first power supply voltage for the transmitting module 200; the first mainboard 106 is respectively connected to the first Bluetooth unit and the second DC conversion unit 105, and the first mainboard 106 is used to control the second DC conversion unit 105 to power the transmitting module 200, and to control the first Bluetooth unit 107 to transmit the parsed information obtained after decoding the external input signal to the driving module 400.

[0073] Specifically, the filtering unit 101 is an EMI filtering circuit, the first rectifying unit 102 is a rectifying circuit, and the EMI circuit and the rectifying circuit are used to suppress the interference of the AC power supply AC input and rectify and filter the AC signal. The boost unit 103 is a PFC circuit, which boosts the voltage after rectification and filtering to a high voltage of 400V and realizes power factor correction. The first DC conversion unit 104 can be a flyback or LLC topology circuit, which can convert the 400V output voltage into a second power supply voltage (12V and 20V) to power the first mainboard 106, and the first DC conversion unit 104 is controlled by the ON / OFF signal of the first mainboard 106. When the signal is a low-level signal, the PFC circuit is turned off and enters the light-load standby mode to achieve low standby power consumption. The second DC conversion unit 105 is an LLC topology circuit, and its function is to convert the 400V voltage output by the PFC circuit into a 380V first power supply voltage and a third power supply voltage VCC1 to power the sending module, and is controlled by the 380V_ON signal of the first mainboard 106. When the 380V_ON signal is at a low level, the second DC conversion unit 105 stops working.

[0074] The first mainboard 106 is used to decode signals such as USB and HDMI, and sends parsed information to the driving module 400 through the first Bluetooth unit 107. It can be seen that the TV box 100 is the enabling and control part of the entire power supply system.

[0075] See also Figure 1 , Figure 2 and Figure 4In a further implementation of an embodiment, the transmitting module 200 includes: a first driving unit 201, a detection unit 202, a first power supply unit 203, a first controller 204 and a transmitting coil 205; wherein the first driving unit 201 is connected to the second DC conversion unit 105 and the transmitting coil 205 respectively, and the first driving unit 201 is used to drive the transmitting coil 205 to generate an alternating magnetic field according to the first power supply voltage output by the second DC conversion unit 105; the first power supply unit 203 is connected to the second DC conversion unit 105, the driving unit 2 01 and the first controller 204, the first power supply unit 203 is used to power the first driving unit 201 and the first controller 204 according to the third power supply voltage output by the second DC conversion unit 105, which is divided into a fourth power supply voltage and a fifth power supply voltage; the first controller 204 is connected to the first driving unit 201 and the detection unit 202 respectively, the first controller 204 is used to control the first driving unit 201 to drive the transmitting coil 205, and is used to collect the voltage and current of the transmitting coil 205 detected by the detection unit 202 for negative feedback control.

[0076] Specifically, the transmitting coil 205 is arranged on the back of the display screen 500, and the first power supply voltage of 380V output by the second DC conversion unit 105 is given to the driving unit 201, and the transmitting coil 205 can generate an alternating magnetic field under the drive of the driving unit 201. At the same time, the second DC conversion unit 105 outputs a third power supply voltage VCC1 to the first power supply unit 203, and the first power supply unit 203 is an LDO power supply circuit, and the LDO circuit outputs a 12V voltage (fourth power supply voltage) to power the driving unit 201, and outputs a 3.3V voltage (fifth power supply voltage) to power the first controller 204, wherein the first controller 204 is an MCU controller, and the MCU controller is used to realize the control of the driving unit 201, drive the transmitting coil 205 to generate an alternating magnetic field, and collect the voltage and current of the transmitting coil 205 detected by the detection unit 202, so as to perform negative feedback control, and realize overvoltage, overcurrent, overtemperature and foreign object detection protection.

[0077] See also Figures 1 to 4In a further implementation of an embodiment, the receiving module 300 includes: a receiving coil 301, a second rectifying unit 302, a third DC conversion unit 303, and a second controller 304; wherein the receiving coil 301 is connected to the second rectifying unit 302, and the receiving coil 301 is used to couple the constant alternating magnetic field generated by the transmitting coil 205 and convert it into electrical energy and output it to the second rectifying unit 302; the second rectifying unit 302 is respectively connected to the third DC conversion unit 303 and the second controller 304, and the second rectifying unit 302 is used to convert the receiving coil 201 into electrical energy. After rectification, the electric energy output by the receiving coil 301 outputs a sixth power supply voltage and a seventh power supply voltage, which respectively power the third DC conversion unit 303 and the second controller 304; the third DC conversion unit 303 is respectively connected to the driving module 400 and the second rectifying unit 302, and the third DC conversion unit 303 is used to convert the sixth power supply voltage into an eighth power supply voltage to power the driving module; the second controller 304 is connected to the second rectifying unit 302, and the second controller 304 is used to collect the voltage and current of the receiving coil 301 for negative feedback control.

[0078] Further, the driving module 400 includes: a second mainboard 401, a constant current unit 402, a logic control board 403, a second Bluetooth unit 404 and a backlight unit 405; wherein the second Bluetooth unit 404 is connected to the second mainboard 401, and the second Bluetooth unit 404 is used to receive the parsing signal sent by the first Bluetooth unit 107 and output it to the second mainboard 401. The second mainboard 401 is connected to the second rectifier unit 302, the second Bluetooth unit 404 and the logic control board 403 respectively, and the second mainboard 401 is used to display the parsing signal fed back by the second Bluetooth unit 404 on the display screen 500 through the logic control board 403 under the drive of the eighth power supply voltage; the constant current unit 402 is connected to the second rectifier unit 302, the backlight unit 306 and the second mainboard 401, and the constant current unit 402 is used to output the ninth power supply voltage after boosting the sixth power supply voltage and drive the backlight unit 405 under the control of the second mainboard 401.

[0079] Specifically, the receiving coil 301 is arranged on the back of the display screen 500, the second rectifying unit 302 is a full-bridge synchronous rectifying bridge circuit, the third DC conversion unit 303 is a BUCK buck circuit, the constant current unit 402 is a constant current control circuit, the second controller 304 is an MCU controller, and the backlight unit 306 is an LED backlight unit. The receiving coil 301 combines the alternating magnetic field generated by the coupling transmitting coil 205, and outputs a DC voltage of about 24V after passing through the full-bridge synchronous rectifying circuit. The BUCK buck circuit converts the unstable 24V voltage (sixth power supply voltage) into a 12V voltage (eighth power supply voltage) to supply power to the second mainboard 401. The constant current control circuit drives the backlight unit 405 under the control of the enable and dimming signals output by the second mainboard 401. After normal startup, the second mainboard 401 is used to realize various UI interactions and various functions, such as online playback, online video, etc. When external USB signals and HDMI signals need to be played, the first mainboard 106 is responsible for decoding and data transfer, and sends the data (decoded external input signal) to the second Bluetooth unit 404 through the first Bluetooth unit 107, and then transmits it to the second mainboard 401. The second mainboard 401 controls the logic control board 403 to drive the display screen 500 to work, so as to realize the playback of corresponding data on the display screen 500.

[0080] See also Figures 5 to 7 In a further implementation of an embodiment, the transmitting coil 205 includes: a first coil 2051 and a first magnetic shielding layer 5052; the first magnetic shielding layer 5052 is arranged along the circumference of the first coil 2051; the receiving coil 301 includes: a second coil 3011 and a second magnetic shielding layer 3012; the second magnetic shielding layer 3012 is arranged along the circumference of the second coil 3011.

[0081] Specifically, the first magnetic shielding layer 5052 and the second magnetic shielding layer 3012 are both cylindrical, the transmitting coil 205 can be accommodated in the first magnetic shielding layer 5052, and the receiving coil 301 can be accommodated in the second magnetic shielding layer 3012. By fully shielding the transmitting coil 205 and the receiving coil 301, the transmitting coil 205 and the receiving coil 301 can be prevented from radiating magnetic radiation outward.

[0082] See also Figure 8 In some embodiments, the present invention further provides a method for powering a television set applied to the television set described above, comprising the steps of:

[0083] S100, the TV box receives a power-on signal, outputs a first power supply voltage to a transmitting module, receives an external input signal, decodes the external input signal, obtains a resolution signal, and sends the decoded signal to a receiving module;

[0084] S200, the transmitting module receives the first power supply voltage output by the TV box and converts it into an alternating magnetic field;

[0085] S300, the receiving module receives the alternating magnetic field generated by the transmitting module and converts it into electrical energy to power the driving module;

[0086] S400, the driving module receives the analysis signal output by the TV box and displays it on a display screen.

[0087] Specifically, in one implementation, the first power supply voltage may be 380V. When the TV box receives a power-on signal, the standby enable ON / OFF signal outputs a high level. The TV box normally outputs 12V and 20V to power the first mainboard. After 12V and 20V are normally powered, the first mainboard starts to work normally, enabling the 380V_ON signal to be high. The first DC conversion unit starts to output 380V input voltage and power supply voltage VCC1. The 380V input voltage and power supply voltage VCC1 are normally output and transmitted to the transmitting module through a connecting line, and the transmitting module starts to work. The receiving module and the driving module sense the alternating magnetic field generated by the transmitting coil and start working. The third DC conversion unit starts to output 12V voltage to power the second mainboard. The second mainboard initializes the display screen and the backlight unit in turn, and the display screen starts to light up and enters the power-on interface. The second Bluetooth unit starts to work and starts to handshake with the first Bluetooth unit. After the second mainboard starts to work normally, it displays normal content. After normal startup, all operations desired by the user are received and responded by the second mainboard. It can be seen that the second mainboard is the main controller and the first mainboard is the auxiliary controller.

[0088] In some embodiments, the television power supply method further comprises the steps of:

[0089] S500, the TV box detects that the standby button is pressed, and outputs a standby instruction to the receiving module;

[0090] S600, the receiving module controls the display screen to be turned off through the driving module according to the shutdown signal, and sends the display screen turning off information to the TV box;

[0091] S700, the TV box stops outputting the first power supply voltage according to the display screen shutdown information;

[0092] S800: The receiving module stops working and the TV enters a standby state.

[0093] Specifically, when the TV box detects that the standby button is pressed, the TV box sends a standby command to the second Bluetooth unit through the first Bluetooth unit to inform the system that it needs to enter the standby state. At this time, the second mainboard begins to turn off the display screen and the backlight unit in sequence, and after completion, sends the display screen shutdown information to the first Bluetooth unit to inform that the display screen has been turned off. The TV box receives the display screen shutdown information sent by the second mainboard, and begins to pull down the 380V_ON signal and the 0M / OFF enable signal in sequence, the second DC conversion unit stops working, the first DC conversion unit starts to enter the light load frequency hopping mode, the transmitting module stops working, and the system enters the standby state. At this time, the first mainboard is in the standby state, waiting for an external signal to wake up, and the second mainboard is in the off state.

[0094] In some embodiments, the television power supply method further includes:

[0095] S900, the TV box receives a remote standby command sent by a remote controller or voice, and sends the remote standby command to the receiving module;

[0096] S1000, the receiving module controls the display screen to be turned off through the driving module according to the remote standby instruction, and sends the display screen turning off information to the TV box;

[0097] S1100, the TV box stops outputting the first power supply voltage according to the display screen shutdown information;

[0098] S1200: The receiving module stops working and the TV enters a standby state.

[0099] Specifically, when the TV box receives a remote standby command sent by a remote control or voice, the second mainboard starts to turn off the display screen and the backlight unit in sequence, and after completion, sends the display screen off information to the first Bluetooth unit to inform that the display screen has been turned off. The TV box receives the display screen off information sent by the second mainboard, and starts to pull down the 380V_ON signal and the 0M / OFF enable signal in sequence, the second DC conversion unit stops working, the first DC conversion unit starts to enter the light load frequency hopping mode, the transmitting module stops working, and the system enters the standby state. At this time, the first mainboard is in the standby state, waiting for an external signal to wake up, and the second mainboard is in the off state.

[0100] In summary, the television set and the power supply method thereof provided by the present invention have the following beneficial effects:

[0101] The back of the TV box is installed against the wall, and there is no gap between the two. This makes the overall shape of the display screen not only shield electromagnetic radiation, but also makes the overall structure of the TV more compact, improving the overall aesthetics.

[0102] The TV box provides 350-400V input voltage to power the transmitter module. High voltage means low current, which reduces the drive loss of the transmitter module and the line loss on the connecting line, improves the efficiency of the transmitter module, thereby improving the wireless charging conversion efficiency and greatly reducing the system power consumption of the TV.

[0103] Fully shielding the transmitting coil and the receiving coil can prevent the transmitting coil and the receiving coil from radiating magnetic fields outward.

[0104] It should be understood that the application of the present invention is not limited to the above examples. For ordinary technicians in this field, improvements or changes can be made based on the above description. All these improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A television set, characterized in that: include: TV box, transmitting module, receiving module, driving module and display screen; wherein, The TV box is connected to the transmitting module by a connecting line and is wirelessly connected to the driving module. The TV box receives an external input signal, and is used to provide a first power supply voltage to the transmitting module, and decode the external input signal to obtain a parsed signal and send it to the driving module; The transmitting module is arranged on the back of the display screen, and the transmitting module is used to receive the first supply voltage and convert the first supply voltage into an alternating magnetic field; The receiving module is arranged on the display screen and is wirelessly connected to the transmitting module, and the receiving module is used to couple the alternating magnetic field generated by the transmitting module and convert it into electrical energy to power the driving module; The driving module is wirelessly connected to the TV box, and the driving module is used to receive the analysis signal and display it on the display screen; The TV box includes: a filtering unit, a first rectifying unit, a boosting unit, a first DC conversion unit, a second DC conversion unit, a first mainboard and a first Bluetooth unit; The filtering unit is connected to the mains power supply and is connected to the first rectifying unit; The first rectifying unit is connected to the boosting unit; The boost unit is connected to the first DC conversion unit and the second DC conversion unit respectively, and the boost unit boosts the rectified and filtered mains power supply and outputs it in two paths to the first DC conversion unit and the second DC conversion unit; The first DC conversion unit is connected to the first mainboard, and the first DC conversion unit is used to provide a second power supply voltage for the first mainboard; The second DC conversion unit is connected to the transmitting module, and the second DC conversion unit is used to provide the first power supply voltage and the third power supply voltage for the transmitting module; The first mainboard is connected to the first Bluetooth unit and the second DC conversion unit respectively, and the first mainboard is used to control the second DC conversion unit to supply power to the transmitting module, and to control the first Bluetooth unit to transmit the parsed information obtained after decoding the external input signal to the driving module; The transmitting module includes: a first driving unit, a detection unit, a first power supply unit, a first controller and a transmitting coil; wherein, The first driving unit is connected to the second DC conversion unit and the transmitting coil respectively, and the first driving unit is used to drive the transmitting coil to generate an alternating magnetic field according to the first supply voltage output by the second DC conversion unit; The first power supply unit is connected to the second DC conversion unit, the drive unit and the first controller respectively, and the first power supply unit is used to output a fourth power supply voltage and a fifth power supply voltage according to the third power supply voltage output by the second DC conversion unit to supply power to the first drive unit and the first controller respectively; The first controller is connected to the first driving unit and the detection unit respectively. The first controller is used to control the first driving unit to drive the transmitting coil, and to collect the voltage and current of the transmitting coil detected by the detection unit for negative feedback control.

2. The television set according to claim 1, characterized in that The receiving module includes: a receiving coil, a second rectifying unit, a third DC conversion unit, and a second controller; wherein, The receiving coil is connected to the second rectifying unit, and the receiving coil is used to couple the alternating magnetic field generated by the transmitting coil and convert it into electrical energy to output to the second rectifying unit; The second rectifying unit is connected to the third DC conversion unit and the second controller respectively, and the second rectifying unit is used to rectify the electric energy output by the receiving coil and output a sixth power supply voltage and a seventh power supply voltage to supply power to the third DC conversion unit and the second controller respectively; The third DC conversion unit is connected to the driving module and the second rectifying unit respectively, and the third DC conversion unit is used to convert the sixth power supply voltage into an eighth power supply voltage to supply power to the driving module; The second controller is connected to the second rectifying unit, and is used for collecting the voltage and current of the receiving coil to perform negative feedback control.

3. The television set according to claim 2, characterized in that The driving module includes: a second mainboard, a constant current unit, a logic control board, a second Bluetooth unit and a backlight unit; wherein, The second Bluetooth unit is connected to the second mainboard, and the second Bluetooth unit is used to receive the parsing signal sent by the first Bluetooth unit and output it to the second mainboard; The second mainboard is connected to the second rectifier unit, the second Bluetooth unit and the logic control board respectively, and the second mainboard is used to display the analyzed signal fed back by the second Bluetooth unit on the display screen through the logic control board under the drive of the eighth power supply voltage; The constant current unit is connected to the second rectifying unit, the backlight unit and the second mainboard respectively, and is used to boost the sixth power supply voltage to output a ninth power supply voltage and drive the backlight unit under the control of the second mainboard.

4. The television set according to claim 2, characterized in that The transmitting coil comprises: a first coil and a first magnetic shielding layer; the first magnetic shielding layer is arranged along the circumference of the first coil; The receiving coil includes: a second coil and a second magnetic shielding layer; the second magnetic shielding layer is arranged along the circumference of the second coil.

5. The television set according to claim 4, characterized in that The first magnetic shielding layer and the second magnetic shielding layer are both cylindrical.

6. A method for powering a television set applied to the television set according to any one of claims 1 to 5, characterized in that: Includes steps: The TV box receives a power-on signal, outputs a first power supply voltage to the transmitting module, receives an external input signal, decodes the external input signal to obtain a parsing signal, and then sends it to the driving module; The transmitting module receives the first power supply voltage output by the TV box and converts it into an alternating magnetic field; The receiving module couples the alternating magnetic field generated by the transmitting module and converts it into electrical energy to power the driving module; The driving module receives the analysis signal output by the TV box and displays it on a display screen.

7. The television power supply method according to claim 6, characterized in that: Also includes: The TV box detects that the standby button is pressed, and outputs a standby instruction to the receiving module; The receiving module controls the display screen to be turned off through the driving module according to the standby instruction, and sends the display screen turning off information to the TV box; The TV box stops outputting the first power supply voltage according to the display screen shutdown information; The receiving module stops working and the television enters a standby state.

8. The method for powering a television set according to claim 6, characterized in that: Also includes: The TV box receives a remote standby command sent by a remote controller or voice, and sends the remote standby command to the receiving module; The receiving module controls the display screen to be turned off through the driving module according to the remote standby instruction, and sends the display screen turning off information to the TV box; The TV box stops outputting the first power supply voltage according to the display screen shutdown information; The receiving module stops working and the television enters a standby state.

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