All-in-one computer with wireless charging function

Abstract

The present invention provides an all-in-one computer with a wireless charging function, comprising an all-in-one computer body, a base, a wireless charging module and a mainboard; the base comprises a main body of the base, and a column fixedly connected to the edge of one end of the main body of the base. A charging area recessed inwardly is provided on the side of the front of the upper shell of the main body of the base away from the column, for placing the device to be charged. The mainboard is located inside the main body of the base, and the wireless charging module is arranged inside the main body of the base corresponding to the charging area; the mainboard is electrically connected to the wireless charging module, so as to supply power to the wireless charging module. The present invention arranges an inwardly recessed charging area on the front of the upper shell of the main body of the base for placing the device to be charged; the wireless charging module is arranged inside the main body of the base corresponding to the charging area. Therefore, when charging the device to be charged, the device to be charged can be well aligned with the wireless charging module, and the user does not need to deliberately adjust the placement position of the mobile phone when charging, which greatly facilitates the user to charge the mobile phone.

Description

Technical Field

[0001] The present invention relates to the technical field of wireless charging, and in particular to an all-in-one computer with a wireless charging function. Background Art

[0002] A wireless charger is a device that uses the principle of electromagnetic induction to charge. By placing a coil at the transmitting end and the receiving end, the transmitting end coil sends an electromagnetic signal to the outside world under the action of electricity, and the receiving end coil receives the electromagnetic signal and converts it into current, thereby achieving the purpose of wireless charging.

[0003] Wireless charging technology originates from wireless power transmission technology and can be divided into two types: low-power wireless charging and high-power wireless charging. It is a special power supply method that does not require a power cord, relies on electromagnetic wave propagation, and then converts electromagnetic wave energy into electrical energy, ultimately achieving wireless charging. Low-power wireless charging often uses electromagnetic induction, such as charging a mobile phone. High-power wireless charging often uses resonance (most electric vehicles use this method for charging), where the power supply device (wireless charger) transmits energy to the power-consuming device, which uses the received energy to charge its battery and at the same time for its own operation.

[0004] At present, some newly launched mobile phones on the market support wireless charging, but the wireless charging function requires a separate wireless charging stand to be used, which makes it very inconvenient to charge the mobile phone. Based on this, some all-in-one computers in the prior art have wireless charging functions and can wirelessly charge mobile phones, but they have the following disadvantages and shortcomings:

[0005] 1. The charging power is relatively low, generally 5W-10W.

[0006] 2. With a single coil structure, the receiving coil of the power-consuming device (such as a mobile phone) and the transmitting coil of the all-in-one computer must be completely aligned to achieve full power transmission, and the user needs to adjust the position of the power-consuming device several times. It is inconvenient to use and the charging process is cumbersome.

[0007] 3. The placement of the coils is different for mobile phones of different sizes, and users do not know where the electrical devices should be placed during full-power wireless charging. Summary of the invention

[0008] The purpose of the present invention is to provide an all-in-one computer with a wireless charging function. By setting a charging area and arranging a wireless charging module corresponding to the charging area, the user does not need to deliberately adjust the placement position of the device to be charged, which greatly facilitates the user to charge the device to be charged.

[0009] In order to achieve the above-mentioned object, the present invention provides an all-in-one computer with a wireless charging function, including an all-in-one computer body, a base, a wireless charging module and a mainboard;

[0010] The base comprises a base body and a column fixedly connected to an edge of one end of the base body, and the integrated machine body is fixedly connected to an end of the column away from the base body;

[0011] The base body includes an upper shell and a lower shell arranged opposite to the upper shell; a charging area recessed inwardly is provided on the front side of the upper shell away from the column for placing the device to be charged;

[0012] The main board is located inside the base body, and the wireless charging module is arranged inside the base body corresponding to the charging area; the main board is electrically connected to the wireless charging module to supply power to the wireless charging module.

[0013] The mainboard is installed on the lower shell, and the wireless charging module is installed on the inner wall of the upper shell.

[0014] An installation portion is provided on the inner wall of the upper shell corresponding to the charging area for installing the wireless charging module.

[0015] The wireless charging module includes a circuit board and a first coil, a second coil and a third coil located on one side of the circuit board; the mounting portion is a groove arranged on the inner wall of the upper shell, and the size of the groove is adapted to the circuit board, so that the circuit board is embedded in the groove to install the wireless charging module.

[0016] The first coil, the second coil, and the third coil are staggered and stacked on the circuit board; the first coil and the third coil are located on the same layer and are spaced apart, and the second coil is stacked on the upper layer of the first coil and the third coil; the second coil is located between the first coil and the third coil, and partially overlaps with the first coil and the third coil.

[0017] The total area of ​​the first coil, the second coil, and the third coil when laid flat is 8.2 inches.

[0018] The circuit board is provided with a wireless charging circuit, and the wireless charging circuit includes a filter capacitor, a positive electrode interface, a negative electrode interface, a first diode, a second diode, a third diode, a first switch tube, a second switch tube, a third switch tube, a fourth switch tube, a fifth switch tube and a sixth switch tube; the first switch tube, the second switch tube, the third switch tube, the fourth switch tube, the fifth switch tube and the sixth switch tube are all N-type field effect transistors;

[0019] One end of the filter capacitor is connected to the cathode interface, and the other end is simultaneously connected to the cathode of the first diode, the cathode of the second diode, and the cathode of the third diode;

[0020] The anode of the first diode is connected to one end of the first coil, and the other end of the first coil is connected to the drain of the second switch tube; the source of the first switch tube is connected to the source of the second switch tube, and the gate of the first switch tube and the gate of the second switch tube both receive control signals; the drain of the first switch tube is connected to the positive electrode interface;

[0021] The anode of the second diode is connected to one end of the second coil, and the other end of the second coil is connected to the drain of the fourth switch tube; the source of the third switch tube is connected to the source of the fourth switch tube, and the gate of the third switch tube and the gate of the fourth switch tube both receive control signals; the drain of the third switch tube is connected to the positive electrode interface;

[0022] The anode of the third diode is connected to one end of the third coil, and the other end of the third coil is connected to the drain of the sixth switch tube; the source of the fifth switch tube is connected to the source of the sixth switch tube, and the gate of the fifth switch tube and the gate of the sixth switch tube both receive control signals; the drain of the fifth switch tube is connected to the positive electrode interface.

[0023] The N-type field effect transistor is an N-type metal oxide field effect transistor.

[0024] The main board is provided with a DC-DC module capable of outputting a direct current voltage of 9V; the positive pole and the negative pole of the output end of the DC-DC module are connected to the positive electrode interface and the negative electrode interface respectively.

[0025] The wireless charging circuit can realize wireless charging for the mobile phone, and the control signal is transmitted to the wireless charging circuit after the user operates the all-in-one computer.

[0026] Beneficial effects of the present invention: The present invention provides an all-in-one computer with a wireless charging function, comprising an all-in-one computer body, a base, a wireless charging module and a mainboard; the base comprises a base body, and a column fixedly connected to the edge of one end of the base body, and the all-in-one computer body is fixedly connected to one end of the column away from the base body; the base body comprises an upper shell and a lower shell arranged opposite to the upper shell; a charging area recessed inwardly is provided on the side of the front of the upper shell away from the column, which is used to place the device to be charged. The mainboard is located inside the base body, and the wireless charging module is arranged inside the base body corresponding to the charging area; the mainboard is electrically connected to the wireless charging module, so as to supply power to the wireless charging module. The present invention arranges an inwardly recessed charging area on the front of the upper shell of the base body for placing the device to be charged; the wireless charging module is arranged inside the base body corresponding to the charging area. Therefore, when charging the device to be charged, the device to be charged can be well aligned with the wireless charging module, and the user does not need to deliberately adjust the placement position of the mobile phone when charging, which greatly facilitates the user to charge the mobile phone. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings are only provided for reference and illustration and are not intended to limit the present invention.

[0028] In the accompanying drawings,

[0029] Figure 1 It is an exploded schematic diagram of the all-in-one computer with wireless charging function of the present invention;

[0030] Figure 2 It is an exploded schematic diagram of installing a circuit board on the inner wall of the upper shell of the present invention;

[0031] Figure 3 A three-dimensional diagram of a circuit board of the present invention embedded in the inner wall of an upper shell;

[0032] Figure 4 is a schematic diagram of a wireless charging module of the present invention;

[0033] Figure 5 This is a schematic diagram of the all-in-one computer with wireless charging function of the present invention charging a mobile phone;

[0034] Figure 6 is a circuit diagram of the wireless charging circuit of the present invention. DETAILED DESCRIPTION

[0035] To further illustrate the technical means and effects of the present invention, the following is a detailed description in conjunction with the preferred embodiments of the present invention and the accompanying drawings.

[0036] See also Figure 1 The present invention provides an all-in-one computer with a wireless charging function, including an all-in-one computer body 1, a base 2, a wireless charging module 4 and a mainboard 6.

[0037] The base 2 includes a base body 21 and a column 22 fixedly connected to an edge of one end of the base body 21 . The integrated machine body 1 is fixedly connected to an end of the column 22 away from the base body 21 .

[0038] The base body 21 includes an upper shell 211 and a lower shell 212 arranged opposite to the upper shell 211; a charging area 2112 recessed inwardly is provided on the front side of the upper shell 211 away from the column 22 for placing the device to be charged.

[0039] The mainboard 6 is located inside the base body 21 , and the wireless charging module 4 is arranged inside the base body 21 corresponding to the charging area 2112 ; the mainboard 6 is electrically connected to the wireless charging module 4 , thereby supplying power to the wireless charging module 4 .

[0040] Specifically, the mainboard 6 is installed on the lower shell 212 , and the wireless charging module 4 is installed on the inner wall of the upper shell 211 .

[0041] Furthermore, a mounting portion 2114 is provided on the inner wall of the upper shell 211 corresponding to the charging area 2112 for mounting the wireless charging module 4 .

[0042] Specifically, Figure 4 As shown, the wireless charging module 4 includes a circuit board 41 and a first coil L1 , a second coil L2 and a third coil L3 located on one side of the circuit board 41 .

[0043] Preferably, the first coil L1 , the second coil L2 and the third coil L3 are all located on a side of the circuit board 41 close to the upper shell 211 .

[0044] The circuit board 41 is provided with a wireless charging circuit, such as Figure 6 As shown, the wireless charging circuit includes a filter capacitor C1, a positive electrode interface LX+, a negative electrode interface LX-, a first diode PD1, a second diode PD2, a third diode PD3, a first switch tube PQ1, a second switch tube PQ2, a third switch tube PQ3, a fourth switch tube PQ4, a fifth switch tube PQ5 and a sixth switch tube PQ6. The first switch tube PQ1, the second switch tube PQ2, the third switch tube PQ3, the fourth switch tube PQ4, the fifth switch tube PQ5 and the sixth switch tube PQ6 are all N-type field effect transistors, which are used to prevent power backflow.

[0045] One end of the filter capacitor C1 is connected to the cathode interface LX-, and the other end is simultaneously connected to the cathode of the first diode PD1, the cathode of the second diode PD2, and the cathode of the third diode PD3;

[0046] The anode of the first diode PD1 is connected to one end of the first coil L1, and the other end of the first coil L1 is connected to the drain of the second switch tube PQ2; the source of the first switch tube PQ1 is connected to the source of the second switch tube PQ2, and the gate of the first switch tube PQ1 and the gate of the second switch tube PQ2 both receive the control signal EN; the drain of the first switch tube PQ1 is connected to the positive electrode interface LX+.

[0047] The anode of the second diode PD2 is connected to one end of the second coil L2, and the other end of the second coil L2 is connected to the drain of the fourth switch tube PQ4; the source of the third switch tube PQ3 is connected to the source of the fourth switch tube PQ4, and the gate of the third switch tube PQ3 and the gate of the fourth switch tube PQ4 both receive the control signal EN; the drain of the third switch tube PQ3 is connected to the positive electrode interface LX+.

[0048] The anode of the third diode PD3 is connected to one end of the third coil L3, and the other end of the third coil L3 is connected to the drain of the sixth switch tube PQ6; the source of the fifth switch tube PQ5 is connected to the source of the sixth switch tube PQ6, and the gate of the fifth switch tube PQ5 and the gate of the sixth switch tube PQ6 both receive the control signal EN; the drain of the fifth switch tube PQ5 is connected to the positive electrode interface LX+.

[0049] The filter capacitor can play a role in power supply filtering.

[0050] Furthermore, the N-type field effect transistor is an N-type metal oxide field effect transistor (Metal-Oxide-Semiconductor Field-Effect Transistor, N-MOSFET).

[0051] Preferably, if Figure 2 and Figure 3 As shown, the mounting portion 2114 is a groove provided on the inner wall of the upper shell 211 , and the size of the groove is adapted to the circuit board 41 , so that the circuit board 41 is embedded in the groove to install the wireless charging module 4 .

[0052] The wireless charging circuit is used to realize wireless charging for electronic devices, such as a mobile phone 5. Figure 5 As shown, when charging, the mobile phone 5 is placed on the charging area 2112, and the user generates a control signal EN after operating the all-in-one computer. The control signal EN is transmitted to the wireless charging circuit, thereby controlling the switch tube to turn on, and the current flows through the coil. The coil emits an electromagnetic signal and passes through the upper shell 211 of the base body 21. After the mobile phone 5 receives the electromagnetic signal emitted by the coil, it converts the electromagnetic signal into current and stores it inside the mobile phone 5, thereby completing the charging of the mobile phone 5.

[0053] Specifically, the first coil L1, the second coil L2, and the third coil L3 are staggered and stacked on the circuit board 41, and the first coil L1 and the third coil L3 are located on the same layer and are spaced apart. The second coil L2 is stacked on the upper layer of the first coil L1 and the third coil L3. The second coil L2 is located between the first coil L1 and the third coil L3, and partially overlaps with the first coil L1 and the third coil L3. The total area of ​​the first coil L1, the second coil L2, and the third coil L3 can reach 8.2 inches (capable of adapting to the current largest size of mobile phone 5). It should be known that the periphery of the wire used to wind the coil is generally provided with insulating paint or insulating rubber, so that short circuits will not occur between the stacked coils. In other embodiments of the present invention, insulating gaskets may also be provided at the coil stacking location so that short circuits will not occur between the coils.

[0054] It should be noted that, in the present invention, the first coil L1, the second coil L2, and the third coil L3 are staggered and stacked on the circuit board 41, and the circuit board 41 corresponds to the charging area 2112. Since the charging area 2112 is recessed inward, when the mobile phone 5 is placed in the charging area 2112, the mobile phone 5 can only move left and right in the charging area 2112 due to the obstruction of the recessed side walls of the charging area 2112, and the area of ​​the first coil L1, the second coil L2, and the third coil L3 is 8.2 inches. Under normal circumstances, the mobile phone receiving end coil can completely overlap with the transmitting end coil (the present invention is the total area of ​​the three coils laid out) (this means that the mobile phone receiving end coil is within the range of the transmitting end coil), and full power charging can be achieved.

[0055] However, if the receiving coil of the mobile phone deviates from the transmitting coil, the charging power is not full power. For example, during the charging process, when the receiving coil of the mobile phone is offset from the middle coil (i.e., the second coil L2) and exceeds the coils on both sides (i.e., the first coil L1 or the third coil L3), the magnetic field emitted by the coils on both sides will also supplement the charging of the mobile phone. And the final charging power of the mobile phone is also limited by the mobile phone itself.

[0056] Specifically, a DC-DC module (not shown) is provided on the mainboard 6, which can output a DC voltage of 9 V. That is, in the present invention, the mainboard 6 supplies power to the wireless charging circuit, that is, the positive and negative electrodes of the output end of the DC-DC module of the mainboard 6 are connected to the positive electrode interface LX+ and the negative electrode interface LX-, respectively.

[0057] It should be noted that the wireless charging circuit of the present invention does not need to increase the cost of three-way power conversion, and only needs to use one way of power provided by the integrated computer motherboard to form a three-way coil output through two N-MOSFETs and a diode in each way. Assuming that the voltage provided by the motherboard of the computer integrated machine is 9V and the current is 2A, the maximum input power of the wireless charging circuit is P1=9V×2A=18W, and the total current received by the receiving end of the electronic device (such as the mobile phone 5) is the sum of the currents of the branches where the three coils are located (the size of each current is related to the relative physical position of the receiving coil at the mobile phone 5 end and the three coils of the wireless charging circuit, and the total current is ≤2A); since the switch tube, coil and diode all have impedance, there will be a voltage difference, so the voltage received by the receiving end of the mobile phone 5 is less than 9V. When the full power transmission is 9V / 2A, assuming that the transmission efficiency is 85%, the power received by the receiving end of the mobile phone 5 is P2=9V×2A×85%=15.3W.

[0058] In summary, the present invention provides a computer integrated machine with wireless charging function, including an integrated machine body, a base, a wireless charging module and a mainboard; the base includes a base body, and a column fixedly connected to the edge of one end of the base body, and the integrated machine body is fixedly connected to the end of the column away from the base body; the base body includes an upper shell and a lower shell arranged opposite to the upper shell; a charging area recessed inwardly is provided on the side of the front of the upper shell away from the column, which is used to place the device to be charged. The mainboard is located inside the base body, and the wireless charging module is arranged inside the base body corresponding to the charging area; the mainboard is electrically connected to the wireless charging module, so as to supply power to the wireless charging module. The present invention arranges an inwardly recessed charging area on the front of the upper shell of the base body for placing the device to be charged; the wireless charging module is arranged inside the base body corresponding to the charging area. Therefore, when charging the device to be charged, the device to be charged can be well aligned with the wireless charging module, and the user does not need to deliberately adjust the placement position of the mobile phone when charging, which greatly facilitates the user to charge the mobile phone.

[0059] As described above, for ordinary technicians in this field, various other corresponding changes and modifications can be made based on the technical solutions and technical concepts of the present invention, and all these changes and modifications should fall within the protection scope of the appended claims of the present invention.

Claims

1. A computer with wireless charging function, characterized in that: It comprises an all-in-one body (1), a base (2), a wireless charging module (4) and a main board (6); The base (2) comprises a base body (21) and a column (22) fixedly connected to an edge of one end of the base body (21), and the integrated machine body (1) is fixedly connected to an end of the column (22) away from the base body (21); The base body (21) comprises an upper shell (211) and a lower shell (212) arranged opposite to the upper shell (211); a charging area (2112) recessed inwardly is provided on a side of the front of the upper shell (211) away from the column (22) for placing a device to be charged; The main board (6) is located inside the base body (21), and the wireless charging module (4) is arranged inside the base body (21) corresponding to the charging area (2112); the main board (6) is electrically connected to the wireless charging module (4), so as to supply power to the wireless charging module (4); the main board (6) is installed on the lower shell (212), and the wireless charging module (4) is installed on the inner wall of the upper shell (211); An installation portion (2114) is provided on the inner wall of the upper shell (211) corresponding to the charging area (2112) for installing the wireless charging module (4); The wireless charging module (4) comprises a circuit board (41) and a first coil (L1), a second coil (L2) and a third coil (L3) located on one side of the circuit board (41); the mounting portion (2114) is a groove provided on the inner wall of the upper shell (211), the size of the groove being adapted to the circuit board (41), so that the circuit board (41) is embedded in the groove to install the wireless charging module (4); The circuit board (41) is provided with a wireless charging circuit, and the wireless charging circuit comprises a filter capacitor (C1), a positive electrode interface (LX+), a negative electrode interface (LX-), a first diode (PD1), a second diode (PD2), a third diode (PD3), a first switch tube (PQ1), a second switch tube (PQ2), a third switch tube (PQ3), a fourth switch tube (PQ4), a fifth switch tube (PQ5) and a sixth switch tube (PQ6); the first switch tube (PQ1), the second switch tube (PQ2), the third switch tube (PQ3), the fourth switch tube (PQ4), the fifth switch tube (PQ5) and the sixth switch tube (PQ6) are all N-type field effect transistors; One end of the filter capacitor (C1) is connected to the negative electrode interface (LX-), and the other end is simultaneously connected to the cathode of the first diode (PD1), the cathode of the second diode (PD2) and the cathode of the third diode (PD3); The anode of the first diode (PD1) is connected to one end of the first coil (L1), and the other end of the first coil (L1) is connected to the drain of the second switch tube (PQ2); the source of the first switch tube (PQ1) is connected to the source of the second switch tube (PQ2), and the gate of the first switch tube (PQ1) and the gate of the second switch tube (PQ2) both receive a control signal (EN); the drain of the first switch tube (PQ1) is connected to the positive electrode interface (LX+); The anode of the second diode (PD2) is connected to one end of the second coil (L2), and the other end of the second coil (L2) is connected to the drain of the fourth switch tube (PQ4); the source of the third switch tube (PQ3) is connected to the source of the fourth switch tube (PQ4), and the gate of the third switch tube (PQ3) and the gate of the fourth switch tube (PQ4) both receive a control signal (EN); the drain of the third switch tube (PQ3) is connected to the positive electrode interface (LX+); The anode of the third diode (PD3) is connected to one end of the third coil (L3), and the other end of the third coil (L3) is connected to the drain of the sixth switch tube (PQ6); the source of the fifth switch tube (PQ5) is connected to the source of the sixth switch tube (PQ6), and the gate of the fifth switch tube (PQ5) and the gate of the sixth switch tube (PQ6) both receive a control signal (EN); and the drain of the fifth switch tube (PQ5) is connected to the positive electrode interface (LX+).

2. The all-in-one computer with wireless charging function as claimed in claim 1, characterized in that: The first coil (L1), the second coil (L2), and the third coil (L3) are staggered and stacked on the circuit board (41); the first coil (L1) and the third coil (L3) are located on the same layer and are spaced apart, and the second coil (L2) is stacked on the upper layer of the first coil (L1) and the third coil (L3); the second coil (L2) is located between the first coil (L1) and the third coil (L3), and partially overlaps with the first coil (L1) and the third coil (L3).

3. The all-in-one computer with wireless charging function as claimed in claim 2, characterized in that: The total area of ​​the first coil (L1), the second coil (L2), and the third coil (L3) when laid flat is 8.2 inches.

4. The all-in-one computer with wireless charging function as claimed in claim 1, characterized in that: The N-type field effect transistor is an N-type metal oxide field effect transistor.

5. The all-in-one computer with wireless charging function as claimed in claim 1, characterized in that: The main board (6) is provided with a DC-DC module capable of outputting a direct current voltage of 9V; the positive pole and the negative pole of the output end of the DC-DC module are respectively connected to the positive pole interface (LX+) and the negative pole interface (LX-).

6. The all-in-one computer with wireless charging function as claimed in claim 1, characterized in that: The wireless charging circuit can realize wireless charging for a mobile phone (5), and the control signal (EN) is transmitted to the wireless charging circuit after the user operates the all-in-one computer.

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