Universal wireless power supply system and wireless power supply table and table turntable thereof

Abstract

The utility model relates to a kind of general wireless power supply system and its wireless power supply article table and dining table turntable, wherein general wireless power supply system includes, wireless power supply circuit, for generating inductive magnetic field;Wireless power supply circuit includes transmitter and wireless transmitting coil group electrically connected with each other;Wireless transmitting coil group includes series transmitting circuit, more than one wireless transmitting coil is arranged on series transmitting circuit, two groups of more than one series transmitting circuit are connected in parallel to constitute wireless transmitting coil group, transmitter controls more than one wireless transmitting coil;Wireless control circuit is used to control wireless power supply circuit;Wireless control circuit includes step-down chip and drive chip, step-down chip is electrically connected drive chip;Drive chip is electrically connected transmitter and outputs set power electric energy to it.The transmitter in the system can control multiple transmitting coils simultaneously, greatly simplify the control circuit of multi-coil system, realize multi-coil control, reduce control difficulty and manufacturing cost.

Description

Technical Field

[0001] This utility model relates to a power supply system, specifically a universal wireless power supply system and its wireless power supply table and dining table turntable. Background Technology

[0002] Wireless power supply technology can provide power without a physical medium. This includes a transmitting coil for generating an electromagnetic field and a transmitter for controlling the transmitting coil to generate a stable resonance. Due to the influence of different capacitive reactance and vibration frequency, in existing wireless power supply systems, a transmitter can only be paired with a single corresponding transmitting coil. When a transmitter controls two or more transmitting coils at the same time, it may be damaged due to different capacitive reactance or vibration frequency. When a product has multiple transmitting coils, a corresponding number of transmitters need to be configured at the same time. This will greatly increase the cost, make the circuit very complex, and increase the difficulty of system control, making it difficult to achieve multi-coil control.

[0003] Therefore, further improvements are needed. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a universal wireless power supply system and its wireless power supply table and dining table turntable. The transmitter in this system can control multiple transmitting coils at the same time, which greatly simplifies the control circuit of the multi-coil system, realizes multi-coil control, and reduces the control difficulty and manufacturing cost.

[0005] The purpose of this utility model is achieved as follows:

[0006] A universal wireless power supply system, comprising,

[0007] A wireless power supply circuit is used to generate an inductive magnetic field. The wireless power supply circuit includes a transmitter and a wireless transmitting coil group that are electrically connected to each other. The wireless transmitting coil group includes a series transmitting circuit, on which one or more wireless transmitting coils are provided. Two or more series transmitting circuits are connected in parallel to form a wireless transmitting coil group. The transmitter controls one or more wireless transmitting coils.

[0008] A wireless control circuit is used to control a wireless power supply circuit. The wireless control circuit includes a step-down chip for reducing the voltage to a set value and a driver chip for outputting a set power to the wireless power supply circuit. The step-down chip is electrically connected to the driver chip. The driver chip is electrically connected to the transmitter and outputs the set power to it.

[0009] As a specific scheme, each set of series transmitting circuits consists of n1 sets of series-parallel transmitting circuits connected in series, and n2 sets of series coils connected in parallel to form a wireless transmitting coil group, where n1=n2; the series-parallel transmitting circuit is composed of one wireless transmitting coil group or two or more wireless transmitting coil groups connected in series and in parallel.

[0010] As another specific solution, the number of transmitting coils is 4. d Or 9 d d is a natural number.

[0011] As another specific solution, four transmitting coils are set up. Two transmitting coils are connected in series to form a first series transmitting circuit, and two sets of first series transmitting circuits are connected in parallel to form a wireless transmitting coil group.

[0012] As another specific solution, 16 transmitting coils are set up. Two transmitting coils are connected in series to form a first series transmitting circuit. Two sets of first series transmitting circuits are connected in parallel to form a first parallel transmitting circuit. Two sets of first parallel transmitting circuits are connected in series to form a second series transmitting circuit. Two sets of second series transmitting circuits are connected in parallel to form a wireless transmitting coil group.

[0013] As another specific solution, a resonant filter capacitor is connected in parallel to the wireless transmitting coil group.

[0014] As another specific solution, the CS pin and VOUT pin on the step-down chip are connected to the VDD pin on the driver chip, the OUT pin on the driver chip is connected to the input terminal of the transmitter, and the output terminal of the transmitter is connected to the wireless transmission coil group.

[0015] As another specific solution, this general-purpose wireless power supply system also includes a rectifier and filter circuit, which includes a rectifier bridge. The input of the rectifier bridge is connected to the city power grid, and the output of the rectifier bridge and the output of the wireless transmitting coil group are respectively connected to the VDD pin on the step-down chip.

[0016] A wirelessly powered table includes a table body and the aforementioned general-purpose wireless power supply system. The top of the table body is a support surface for placing wireless products. A wireless transmitting coil assembly is disposed on the table body, and the wireless transmitting coil assembly corresponds to the support surface of the table body.

[0017] A wirelessly powered turntable includes a table body, a turntable body rotatably mounted on the table body, and the aforementioned universal wireless power supply system. The top of the turntable body is a support surface for placing wireless products. A wireless transmitting coil assembly is mounted on the turntable body, and the wireless transmitting coil assembly corresponds to the support surface of the turntable body.

[0018] The beneficial effects of this utility model are as follows:

[0019] In the wireless transmitting coil assembly, the transmitting coils are rationally connected in series and parallel to effectively control the capacitive reactance of two or more transmitting coils working simultaneously to not exceed the transmitter's rated value, and maintain the vibration frequency at the rated value. This effectively protects the transmitter and ensures that it will not be damaged when controlling multiple transmitting coils simultaneously. Since the transmitter can control one to multiple transmitting coils, the manufacturing cost is reduced and the circuit complexity is greatly reduced, which reduces the difficulty of control. When the system starts up, the unused transmitting coils are equivalent to wires in the circuit and will not cause additional energy consumption, ensuring reasonable energy consumption. Attached Figure Description

[0020] Figure 1 This is a circuit diagram of the wireless power supply system in the first embodiment of this utility model.

[0021] Figure 2 This is a circuit diagram of the wireless control circuit in the first embodiment of this utility model.

[0022] Figure 3 This is a circuit diagram of the wireless power supply circuit in the first embodiment of this utility model.

[0023] Figure 4 This is a circuit diagram of the rectifier and filter circuit in the first embodiment of this utility model.

[0024] Figure 5 This is a schematic diagram illustrating the use of the wirelessly powered storage table in the first embodiment of this utility model.

[0025] Figure 6 This is a schematic diagram illustrating the use of the wirelessly powered dining table turntable in the first embodiment of this utility model.

[0026] Figure 7 This is a circuit diagram of the wireless heating product in the first embodiment of this utility model.

[0027] Figure 8 This is a circuit diagram of the wireless power supply circuit in the second embodiment of this utility model.

[0028] Figure 9 This is a circuit diagram of the wireless power supply circuit in the third embodiment of this utility model.

[0029] Figure 10 This is a circuit diagram of the wireless power supply circuit in the fourth embodiment of this utility model. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0031] First embodiment:

[0032] See Figures 1-4The general-purpose wireless power supply system involved in this embodiment includes,

[0033] Wireless power supply circuit A is used to generate an inductive magnetic field. Wireless power supply circuit A includes a transmitter 1 and a wireless transmitting coil group 2 that are electrically connected to each other. Wireless transmitting coil group 2 includes a series transmitting circuit, on which one or more wireless transmitting coils are provided. Two or more series transmitting circuits are connected in parallel to form wireless transmitting coil group 2. By combining series connection and parallel connection, problems such as different capacitive reactance and vibration frequency change are overcome, so that transmitter 1 can control one or more wireless transmitting coils at the same time.

[0034] Wireless control circuit B is used to control wireless power supply circuit A. Wireless control circuit B includes a step-down chip 5 for reducing the voltage to a set value and a driver chip 6 for outputting a set power to wireless power supply circuit A. Step-down chip 5 is electrically connected to driver chip 6. Driver chip 6 is electrically connected to transmitter 1 and outputs a set power to it.

[0035] In wireless transmitting coil group 2, the transmitting coils are reasonably connected in series and parallel to effectively control the capacitive reactance of two or more transmitting coils working at the same time to not exceed the rated value of the transmitter, and the vibration frequency is kept at the rated value, which effectively protects the transmitter and ensures that it will not be damaged when controlling multiple transmitting coils at the same time. Since the transmitter can realize one-to-many transmitting coil control, the manufacturing cost is reduced and the circuit complexity is greatly reduced, which reduces the control difficulty. When the system starts up, the unused transmitting coils are equivalent to wires in the circuit and will not cause additional energy consumption, ensuring the rationality of energy consumption.

[0036] Furthermore, each set of series-connected transmitting circuits consists of n1 sets of series-parallel transmitting circuits connected in series, and n2 sets of series-connected coils connected in parallel to form a wireless transmitting coil group 2, where n1=n2; this circuit structure can ensure that the capacitive reactance generated by each transmitting coil will not exceed the set value of the transmitter, thereby avoiding damage to the transmitter; the series-parallel transmitting circuit consists of one wireless transmitting coil group 2 or two or more wireless transmitting coil groups 2 connected in series and in parallel.

[0037] Furthermore, the number of transmitting coils is 4. d d is a natural number (d = 0, 1, 2, 3, 4, 5, 6, 7...).

[0038] Furthermore, in this embodiment, 16 transmitting coils are provided, i.e., d=2 (see...). Figure 1Or 3) The 16 transmitting coils are L2-17; two transmitting coils are connected in series to form a first series transmitting circuit 201 (i.e., L2 and L17 are connected in series, L3 and L4 are connected in series, L5 and L6 are connected in series, L7 and L8 are connected in series, L9 and L10 are connected in series, L11 and L12 are connected in series, L13 and L14 are connected in series, and L15 and L16 are connected in series. In this embodiment, there are a total of 8 sets of first series transmitting circuits 201). Two sets of first series transmitting circuits 201 are connected in parallel to form a first parallel transmitting circuit 202 (i.e., L2, L3, L4, and L17 form a first parallel transmitting circuit 202, L5, L6, L7, and L8 form a first parallel transmitting circuit 202, and L9, L10, L11, and L12 form a first parallel transmitting circuit 202). The transmitting circuit 202, L13, L14, L15, and L16 form a first parallel transmitting circuit 202. In this embodiment, there are a total of 4 sets of first parallel transmitting circuits 202. Two sets of first parallel transmitting circuits 202 are connected in series to form a second series transmitting circuit 203 (i.e., L2, L17, L3, L4, L5, L6, L7, and L8 form a second series transmitting circuit 203, and L9, L10, L11, L12, L13, L14, L15, and L16 form a second series transmitting circuit 203. In this embodiment, there are a total of 2 sets of second series transmitting circuits 203). Two sets of second series transmitting circuits 203 are connected in parallel to form a wireless transmitting coil group 2. The 16 transmitting coils are equivalent to having 16 wireless power supply positions, which can simultaneously power 16 wireless heating products.

[0039] Furthermore, the wireless transmitting coil group 2 is connected in parallel with a resonant filter capacitor 3.

[0040] Furthermore, the CS pin and VOUT pin on the step-down chip 5 are connected to the VDD pin on the driver chip 6, the OUT pin on the driver chip 6 is connected to the input terminal of the transmitter 1, the output terminal of the transmitter 1 is connected to the wireless transmission coil group 2, and the driver chip 6 outputs a 31.5kHz frequency resonance to the transmitter 1.

[0041] Further, see Figure 4 This general-purpose wireless power supply system also includes a rectifier and filter circuit C, which includes a rectifier bridge 4. The input of the rectifier bridge 4 is connected to the city power grid to access 220V AC power. The output of the rectifier bridge 4 and the output of the wireless transmitting coil group 2 are respectively connected to the VDD pin on the step-down chip 5. The rectifier bridge 4 regulates the 220V AC power to 310V AC power, which is then stepped down to 12V DC power by the step-down chip 5 to supply the driver chip 6.

[0042] See Figure 5The wirelessly powered storage table involved in this embodiment includes a table body 10 and the above-mentioned general wireless power supply system. The top of the table body 10 is a support surface for placing wireless products. The wireless transmitting coil group 2 is disposed on the table body 10, and the wireless transmitting coil group 2 corresponds to the support surface of the table body 10. The tabletop of the table body 10 is preferably made of non-metallic material, and each transmitting coil is hidden inside the table body 10. The storage table includes dining table, desk, tea table, coffee table, etc.

[0043] See Figure 6 The wireless power supply turntable involved in this embodiment includes a table body 10, a turntable body 11 rotatably disposed on the table body 10, and the aforementioned general wireless power supply system. The top of the turntable body 11 is a support surface for placing wireless products. A wireless transmitting coil group 2 is disposed on the turntable body 11, and the wireless transmitting coil group 2 corresponds to the support surface of the turntable body 11. The turntable body 11 is preferably made of non-metallic material, and each transmitting coil is hidden at the bottom of the turntable body 11.

[0044] This universal wireless power supply system can be used with metal containers 12 and wireless heating products with wireless power connection circuitry. Figure 7 The circuit diagram of the wireless power connection circuit on the wireless heating product is shown; when the metal container 12 is placed above the transmitting coil, it generates heat to keep warm. The wireless heating product includes an electric kettle 13 and an electric hot pot 14. The heating element on the wireless heating product can be graphene or heating wire, etc. The wireless heating product provides the electrical energy required for its operation when placed above the transmitting coil.

[0045] Second embodiment:

[0046] See Figure 8 The general wireless power supply system involved in this embodiment differs from the first embodiment in that: four transmitting coils are set, two transmitting coils are connected in series to form a first series transmitting circuit 201 (i.e., L1 and L2 are connected in series, L3 and L4 are connected in series, and there are two sets of first series transmitting circuits 201 in this embodiment), and the two sets of first series transmitting circuits 201 are connected in parallel to form a wireless transmitting coil group 2.

[0047] The other undescribed parts are basically the same as those in the first embodiment, and will not be analyzed or explained in detail here.

[0048] Third embodiment:

[0049] See Figure 9 The general-purpose wireless power supply system involved in this embodiment differs from the first embodiment in that: one transmitting coil is set, and one transmitting coil L1 constitutes a wireless transmitting coil group 2.

[0050] The other undescribed parts are basically the same as those in the first embodiment, and will not be analyzed or explained in detail here.

[0051] Fourth embodiment:

[0052] See Figure 10 The universal wireless power supply system involved in this embodiment differs from the first embodiment in that the number of transmitting coils is 9. d , d=1.

[0053] Furthermore, the three transmitting coils are connected in series to form a first series transmitting circuit 201 (i.e., L1, L2 and L3 are connected in series, L4, L5 and L6 are connected in series, and L7, L8 and L9 are connected in series. In this embodiment, there are a total of 3 sets of first series transmitting circuits 201). The three sets of first series transmitting circuits 201 are connected in parallel to form a wireless transmitting coil group 2.

[0054] The other undescribed parts are basically the same as those in the first embodiment, and will not be analyzed or explained in detail here.

[0055] The above describes the preferred embodiments of this utility model, illustrating and describing its basic principles, main features, and advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made without departing from the spirit and scope of this utility model, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A universal wireless power supply system, characterized in that: include, The wireless power supply circuit (A) is used to generate an inductive magnetic field. The wireless power supply circuit (A) includes a transmitter (1) and a wireless transmission coil group (2) that are electrically connected to each other. The wireless transmission coil group (2) includes a series transmission circuit, on which one or more wireless transmission coils are provided. Two or more series transmission circuits are connected in parallel to form a wireless transmission coil group (2). The transmitter (1) controls one or more wireless transmission coils. The wireless control circuit (B) is used to control the wireless power supply circuit (A). The wireless control circuit (B) includes a step-down chip (5) for reducing the voltage to a set value and a driver chip (6) for outputting a set power energy to the wireless power supply circuit (A). The step-down chip (5) is electrically connected to the driver chip (6). The driver chip (6) is electrically connected to the transmitter (1) and outputs a set power energy to it.

2. The universal wireless power supply system according to claim 1, characterized in that: Each set of serial transmitting circuits consists of n1 sets of serial-parallel transmitting circuits connected in series, and n2 sets of serial coils connected in parallel to form a wireless transmitting coil group (2), where n1=n2; the serial-parallel transmitting circuit consists of one wireless transmitting coil group (2) or two or more wireless transmitting coil groups (2) connected in series and in parallel.

3. The universal wireless power supply system according to claim 2, characterized in that: The number of transmitting coils is 4. d Or 9 d d is a natural number.

4. The universal wireless power supply system according to claim 3, characterized in that: Four transmitting coils are provided. Two transmitting coils are connected in series to form a first series transmitting circuit (201). Two sets of first series transmitting circuits (201) are connected in parallel to form a wireless transmitting coil group (2).

5. The universal wireless power supply system according to claim 3, characterized in that: Sixteen transmitting coils are set. Two transmitting coils are connected in series to form a first series transmitting circuit (201). Two sets of first series transmitting circuits (201) are connected in parallel to form a first parallel transmitting circuit (202). Two sets of first parallel transmitting circuits (202) are connected in series to form a second series transmitting circuit (203). Two sets of second series transmitting circuits (203) are connected in parallel to form a wireless transmitting coil group (2).

6. The universal wireless power supply system according to claim 1, characterized in that: The wireless transmitting coil group (2) is connected in parallel with a resonant filter capacitor (3).

7. The universal wireless power supply system according to claim 1, characterized in that: The CS pin and VOUT pin on the step-down chip (5) are connected to the VDD pin on the driver chip (6), the OUT pin on the driver chip (6) is connected to the input terminal of the transmitter (1), and the output terminal of the transmitter (1) is connected to the wireless transmission coil group (2).

8. The universal wireless power supply system according to claim 1, characterized in that: It also includes a rectifier filter circuit (C), which includes a rectifier bridge (4). The input of the rectifier bridge (4) is connected to the city power grid, and the output of the rectifier bridge (4) and the output of the wireless transmitting coil group (2) are respectively connected to the VDD pin on the step-down chip (5).

9. A wirelessly powered storage table, comprising a table body (10), the top of which is a support surface for placing wireless products; characterized in that: It also includes the general-purpose wireless power supply system as described in any one of claims 1-8, wherein the wireless transmitting coil group (2) is disposed on the table body (10) and the wireless transmitting coil group (2) corresponds to the support surface of the table body (10).

10. A wirelessly powered turntable, comprising a table body (10) and a turntable body (11) rotatably mounted on the table body (10), wherein the top of the turntable body (11) is a support surface for placing wireless products; characterized in that: It also includes the general-purpose wireless power supply system as described in any one of claims 1-8, wherein the wireless transmitting coil group (2) is disposed on the turntable body (11), and the wireless transmitting coil group (2) corresponds to the support surface of the turntable body (11).

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