Cooker wireless charging device of onboard PCB (printed circuit board) coil

Abstract

The utility model discloses an onboard PCB coil cooker wireless charging device, which comprises a wireless charging transmitter and a wireless charging receiver, the wireless charging transmitter comprises a first PCB, a charging transmitting coil L1 is printed on the first PCB, the wireless charging receiver comprises a second PCB, a charging receiving coil L2 is printed on the second PCB, the coils are printed on the PCBs, and the wireless charging transmitter and the wireless charging receiver are electrically connected with the wireless charging receiver. Magnetic induction parameters are stable, magnetic field resonance working frequency is high, charging efficiency is high, assembling is convenient, and cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of stoves, in particular to a stove wireless charging device with a board-mounted PCB coil. Background Art

[0002] In order to reduce the number of wires connected between the inside and outside of the stove, wireless charging can be used to provide power. However, existing wireless charging devices mostly use coils to achieve magnetic induction, and the coils are mostly assembled in a mounting manner, which is inconvenient to assemble and requires the use of back magnets, which is costly. Utility Model Content

[0003] The utility model aims to provide a wireless charging device for a cooker with an onboard PCB coil. The coil is printed on a PCB board, has stable magnetic induction parameters, high magnetic field resonance operating frequency, high charging efficiency, convenient assembly, and cost saving.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] A cooker wireless charging device with a PCB coil on board, including a wireless charging transmitter and a wireless charging receiver;

[0006] The wireless charging transmitter is arranged on one side of the panel, and the wireless charging receiver is arranged on the other side of the panel;

[0007] The wireless charging transmitter comprises a first PCB board, on which a charging transmitting coil L1 is printed;

[0008] The wireless charging receiver includes a second PCB board, and the second PCB board is printed with a charging receiving coil L2.

[0009] In some embodiments, the first PCB board is provided with a first central hole, and the charging transmitting coil L1 is arranged around the first central hole;

[0010] The second PCB board is provided with a second center hole, and the charging receiving coil L2 is arranged around the second center hole;

[0011] The first center hole is provided with a first positioning magnet, and the second center hole is provided with a second positioning magnet.

[0012] In some embodiments, the wireless charging transmitter further includes a first housing, and the first PCB board and the first positioning magnet are both disposed inside the first housing;

[0013] The wireless charging receiver also includes a second shell, and the second PCB board and the second positioning magnet are both arranged inside the second shell.

[0014] In some embodiments, the first PCB board is printed with a charging transmitting circuit, the charging transmitting circuit includes a chip U1, a pin 5 of the chip U1 is connected to one end of the charging transmitting coil L1, the other end of the charging transmitting coil L1 is connected to a pin 7 of the chip U1, and the pin 7 of the chip U1 is connected to the VCC terminal;

[0015] The charging transmitting coil L1 is connected in parallel with a capacitor C3;

[0016] Pin 7 of the chip U1 is connected to capacitor C1 and then to ground.

[0017] In some embodiments, pin 1 of chip U1 is connected to resistors R1 and R3 and then to the VCC terminal;

[0018] Pin 2 of chip U1 is connected to resistor R3 and then to the VCC terminal.

[0019] In some embodiments, the charging and transmitting circuit further includes an interface CN2, pins 1 and 12 of the interface CN2 are both grounded, and pins 2 and 11 of the interface CN2 are both connected to the VCC terminal.

[0020] In some implementations, the interface CN2 is a TYPE C interface.

[0021] In some embodiments, the second PCB board is printed with a charging receiving circuit, and the charging receiving circuit includes a chip U2;

[0022] Pin 2 of chip U2 is connected to diode D1 and then to one end of charging receiving coil L2, and the other end of charging receiving coil L2 is grounded;

[0023] The charging receiving coil L2 is connected in parallel with the capacitor C4, the diode DW1 and the capacitor C5 in sequence, and the cathode of the diode DW1 is connected with the cathode of the diode D1;

[0024] Pin 3 of chip U2 is connected to inductor L3 and then to the VCC terminal.

[0025] In some embodiments, the charging receiving circuit further includes a capacitor C6 and a capacitor C7;

[0026] One end of capacitor C6 is connected to the VCC terminal, and the other end of capacitor C6 is grounded;

[0027] One end of the capacitor C7 is connected to the VCC terminal, and the other end of the capacitor C7 is grounded;

[0028] The inductor L3 and the VCC terminal are connected in parallel to resistors R6 and R7 and then grounded.

[0029] In some embodiments, pin 3 of chip U2 is connected to the cathode of diode D2 and then to ground;

[0030] Pin 2 of chip U2 is connected to resistor R5 and then to pin 7 of chip U2;

[0031] Pin 5 of chip U2 is connected between resistors R6 and R7;

[0032] The charging receiving circuit also includes an interface CN1, wherein a pin 1 of the interface CN1 is connected to the VCC terminal, and a pin 2 of the interface CN1 is grounded.

[0033] The beneficial effects of the utility model are as follows: the coil is printed on the PCB board, the magnetic induction parameters are stable, the magnetic field resonance working frequency is high, the charging efficiency is high, the assembly is convenient, and the cost is saved;

[0034] In addition, the wireless charging transmitter is limited and fixed by magnets, and is flexible to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a structural diagram of a stove wireless charging device with a PCB coil on board of the utility model;

[0036] Figure 2 This is a structural diagram of the wireless charging transmitting circuit of the utility model;

[0037] Figure 3 This is a structural diagram of the first PCB board of the utility model;

[0038] Figure 4 This is a structural diagram of the wireless charging receiving circuit of the present utility model;

[0039] Figure 5 This is a structural diagram of the second PCB board of the utility model;

[0040] Among them: 1-wireless charging transmitter; 11-first shell; 12-first positioning magnet; 13-first PCB board; 131-first center hole; 2-wireless charging receiver; 21-second shell; 22-second positioning magnet; 23-second PCB board; 231-second center hole; 3-panel. DETAILED DESCRIPTION

[0041] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0042] refer to Figures 1 to 5 , a cooker wireless charging device with a PCB coil on board, comprising a wireless charging transmitter 1 and a wireless charging receiver 2;

[0043] The wireless charging transmitter 1 is arranged on one side of the panel 3, such as the outer side of the panel 3, and the wireless charging receiver 2 is arranged on the other side of the panel 3, such as the inner side of the panel 3, so as to transmit electric energy by magnetic induction to the electronic components such as the touch components, indicator lights, screens and ignition components of the cooker;

[0044] refer to Figure 2 and Figure 3, the wireless charging transmitter 1 comprises a first PCB board 13, and the first PCB board 13 is printed with a charging transmitting coil L1;

[0045] refer to Figure 4 and Figure 5 The wireless charging receiver 2 includes a second PCB board 23 , on which a charging receiving coil L2 is printed.

[0046] Therefore, the magnetic induction coils are all arranged on the PCB board by printing, the magnetic induction parameters are more stable, the magnetic field resonance working frequency is high, the charging efficiency is high, the assembly is convenient, the back magnetism is eliminated, and the cost is saved.

[0047] refer to Figure 3 The first PCB board 13 is provided with a first central hole 131, the first central hole 131 is approximately located in the middle of the first PCB, and the charging transmitting coil L1 is arranged around the first central hole 131;

[0048] refer to Figure 5 The second PCB board 23 is provided with a second center hole 231, the second center hole 231 is approximately located in the middle of the second PCB, and the charging receiving coil L2 is arranged around the second center hole 231;

[0049] The first center hole 131 is provided with a first positioning magnet 12 , and the second center hole 231 is provided with a second positioning magnet 22 .

[0050] Thus, the wireless charging transmitter 1 is positioned and fixed by the magnet, and the magnetic field attraction is used to enable the wireless charging transmitter 1 to be aligned with the wireless charging receiver 2. The coils are arranged around the central hole so that the two coils can accurately correspond to each other;

[0051] When the stove is not in use, the wireless charging transmitter 1 can be placed at any position of the panel 3. When the stove is in use, the wireless charging transmitter 1 is fixed to the opposite side of the wireless charging receiver 2 by magnetic force, and then the electric energy is transmitted wirelessly, which is flexible to use.

[0052] To further illustrate, the wireless charging transmitter 1 further includes a first housing 11, and the first PCB board 13 and the first positioning magnet 12 are both disposed inside the first housing 11;

[0053] The wireless charging receiver 2 further includes a second housing 21 , and the second PCB board 23 and the second positioning magnet 22 are both disposed inside the second housing 21 .

[0054] The panel 3 is a glass plate to improve the aesthetics.

[0055] refer to Figure 2 and Figure 3The first PCB board 13 is printed with a charging transmitting circuit, which includes a chip U1, a pin 5 of the chip U1 is connected to one end of the charging transmitting coil L1, the other end of the charging transmitting coil L1 is connected to a pin 7 of the chip U1, and the pin 7 of the chip U1 is connected to the VCC terminal;

[0056] The charging transmitting coil L1 is connected in parallel with a capacitor C3, which acts as a filter;

[0057] Pin 7 of chip U1 is connected to capacitor C1 and then to ground. Capacitor C1 acts as a filter, and the voltage at the VCC terminal is 5V.

[0058] To further illustrate, the pin 1 of the chip U1 is connected to the resistors R1 and R3 and then to the VCC terminal; the pin 2 of the chip U1 is connected to the resistor R3 and then to the VCC terminal. The resistors R1 and R3 can absorb electrical energy, thereby protecting the circuit.

[0059] Further explanation, the charging transmitting circuit also includes an interface CN2, pins 1 and 12 of the interface CN2 are both grounded, and pins 2 and 11 of the interface CN2 are both connected to the VCC terminal. Pins 13, 14, 15 and 16 of the interface CN2 are all grounded. An external power source such as AC power is connected to the charging transmitting circuit through the interface CN2, and the interface CN2 can be a USB interface, preferably a TYPE C interface.

[0060] refer to Figure 4 and Figure 5 The second PCB board 23 is printed with a charging receiving circuit, and the charging receiving circuit includes a chip U2;

[0061] Pin 2 of chip U2 is connected to diode D1 and then to one end of charging receiving coil L2, and the other end of charging receiving coil L2 is grounded;

[0062] The charging receiving coil L2 is connected in parallel with the capacitor C4, the diode DW1 and the capacitor C5 in sequence, wherein the cathode of the diode DW1 is connected to the cathode of the diode D1, the diode D1 and the diode DW1 form a rectifying unit, and the capacitors C4 and C5 play a filtering role;

[0063] Pin 3 of chip U2 is connected to inductor L3 and then to VCC terminal. The voltage of VCC terminal is 5V. Inductor L3 plays the role of rectification and filtering to reduce voltage fluctuation.

[0064] Further explanation, the charging receiving circuit also includes capacitor C6 and capacitor C7; one end of capacitor C6 is connected to the VCC end, and the other end of capacitor C6 is grounded; one end of capacitor C7 is connected to the VCC end, and the other end of capacitor C7 is grounded, and capacitors C6 and C7 both play a filtering role;

[0065] The parallel connection between the inductor L3 and the VCC terminal is connected to the resistors R6 and R7 and then grounded. The resistors R6 and R7 can absorb electrical energy, thereby protecting the circuit.

[0066] Pin 3 of chip U2 is connected to the negative electrode of diode D2 and then grounded, and pin 4 of chip U2 is grounded;

[0067] Pin 2 of chip U2 is connected to resistor R5 and then to pin 7 of chip U2;

[0068] Pin 5 of chip U2 is connected between resistors R6 and R7.

[0069] To further explain, the charging receiving circuit also includes an interface CN1, pin 1 of the interface CN1 is connected to the VCC terminal, and pin 2 of the interface CN1 is grounded. The wireless charging receiver 2 supplies the induced electric energy to the electronic components of the cooker through the interface CN1.

[0070] The above disclosure is only some embodiments of the utility model. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the utility model, and these all belong to the protection scope of the utility model.

Claims

1. A cooker wireless charging device with a PCB coil on board, characterized in that: It comprises a wireless charging transmitter (1) and a wireless charging receiver (2); The wireless charging transmitter (1) is arranged on one side of the panel (3), and the wireless charging receiver (2) is arranged on the other side of the panel (3); The wireless charging transmitter (1) comprises a first PCB board (13), wherein the first PCB board (13) is printed with a charging transmitting coil L1; The wireless charging receiver (2) comprises a second PCB board (23), and the second PCB board (23) is printed with a charging receiving coil L2.

2. The cooker wireless charging device with a PCB coil on board according to claim 1, characterized in that: The first PCB board (13) is provided with a first central hole (131), and the charging transmitting coil L1 is arranged around the first central hole (131); The second PCB board (23) is provided with a second center hole (231), and the charging receiving coil L2 is arranged around the second center hole (231); The first center hole (131) is provided with a first positioning magnet (12), and the second center hole (231) is provided with a second positioning magnet (22).

3. The cooker wireless charging device with a PCB coil on board according to claim 2, characterized in that: The wireless charging transmitter (1) further comprises a first housing (11), wherein the first PCB board (13) and the first positioning magnet (12) are both arranged inside the first housing (11); The wireless charging receiver (2) further comprises a second housing (21), wherein the second PCB board (23) and the second positioning magnet (22) are both arranged inside the second housing (21); The panel (3) is a glass plate.

4. The cooker wireless charging device with a PCB coil on board according to any one of claims 1 to 3, characterized in that: The first PCB board (13) is printed with a charging and transmitting circuit, the charging and transmitting circuit comprises a chip U1, a pin 5 of the chip U1 is connected to one end of a charging and transmitting coil L1, the other end of the charging and transmitting coil L1 is connected to a pin 7 of the chip U1, and the pin 7 of the chip U1 is connected to a VCC terminal; The charging transmitting coil L1 is connected in parallel with a capacitor C3; Pin 7 of the chip U1 is connected to capacitor C1 and then grounded.

5. The cooker wireless charging device with a PCB coil on board according to claim 4, characterized in that: Pin 1 of the chip U1 is connected to resistors R1 and R3 and then to the VCC terminal; Pin 2 of the chip U1 is connected to the resistor R3 and then to the VCC terminal.

6. The cooker wireless charging device with a PCB coil on board according to claim 5, characterized in that: The charging and transmitting circuit further comprises an interface CN2, wherein pins 1 and 12 of the interface CN2 are both grounded, and pins 2 and 11 of the interface CN2 are both connected to a VCC terminal.

7. The cooker wireless charging device with a PCB coil on board according to claim 6, characterized in that: The interface CN2 is a TYPE C interface.

8. The cooker wireless charging device with a PCB coil on board according to any one of claims 1 to 3, characterized in that: The second PCB board (23) is printed with a charging receiving circuit, and the charging receiving circuit includes a chip U2; Pin 2 of the chip U2 is connected to a diode D1 and then to one end of a charging receiving coil L2, and the other end of the charging receiving coil L2 is grounded; The charging receiving coil L2 is connected in parallel with the capacitor C4, the diode DW1 and the capacitor C5 in sequence, and the cathode of the diode DW1 is connected to the cathode of the diode D1; Pin 3 of the chip U2 is connected to the inductor L3 and then to the VCC terminal.

9. The cooker wireless charging device with a PCB coil on board according to claim 8, characterized in that: The charging receiving circuit also includes a capacitor C6 and a capacitor C7; One end of the capacitor C6 is connected to the VCC terminal, and the other end of the capacitor C6 is grounded; One end of the capacitor C7 is connected to the VCC terminal, and the other end of the capacitor C7 is grounded; The inductor L3 and the VCC terminal are connected in parallel to resistors R6 and R7 and then grounded.

10. The cooker wireless charging device with a PCB coil on board according to claim 9, characterized in that: Pin 3 of the chip U2 is connected to the cathode of the diode D2 and then to ground; Pin 2 of the chip U2 is connected to resistor R5 and then to pin 7 of the chip U2; Pin 5 of the chip U2 is connected between resistors R6 and R7; The charging receiving circuit further comprises an interface CN1, wherein a pin 1 of the interface CN1 is connected to a VCC terminal, and a pin 2 of the interface CN1 is grounded.

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