CN219875212U - Wireless power supply device - Google Patents
Wireless power supply device Download PDFInfo
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- CN219875212U CN219875212U CN202320409665.2U CN202320409665U CN219875212U CN 219875212 U CN219875212 U CN 219875212U CN 202320409665 U CN202320409665 U CN 202320409665U CN 219875212 U CN219875212 U CN 219875212U
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Abstract
The utility model discloses a wireless power supply device, which comprises a wireless power supply and a wireless receiving module; the wireless power supply comprises an ACDC conversion module, a DCAC inversion module, a first oscillation circuit and a first coil, wherein the input end of the ACDC conversion module is connected with external alternating current, the output end of the ACDC conversion module is connected with the input end of the DCAC inversion module, the output end of the DCAC inversion module is connected with the input end of the first oscillation circuit, and the output end of the first oscillation circuit is connected with the first coil; the wireless receiving module comprises a second coil, a second oscillation circuit and a power supply conversion module, wherein the second coil is connected with the input end of the second oscillation circuit, the output end of the second oscillation circuit is connected with the input end of the power supply conversion module, and the output end of the power supply conversion module supplies power to a load; the first coil and the second coil are mutually inductive. The utility model provides a wireless power supply device which realizes wireless power supply between a power supply source and a load.
Description
Technical Field
The present utility model relates to a wireless power supply device.
Background
At present, as the modernization and electrification degree of society are deepened continuously, a contact type transmission mode of directly connecting metal wires to perform electric energy transmission is widely used, but the contact type power supply of traditional electric equipment has the problems of spark, insulation and conductor loss caused by contact friction, and the service life of the electric equipment is seriously shortened.
In addition, the conventional contact type electric energy transmission mode cannot meet the requirements of some special application occasions, such as mines, oil fields, underwater detection and the like, and the contacts are easy to cause electric sparks due to friction and even possibly cause serious damage.
When power is supplied to the sports equipment, sliding contact power is generally adopted, but the power supply mode has the defects of sliding abrasion, contact spark, carbon deposition, unsafe bare wires and the like. With the wide spread of various portable electronic devices, the power plug is frequently pulled out and plugged in, and abrasion, deformation and aging of contacts are easy to occur, so that the safety is not ensured.
In addition, the wired power transmission mode provides a great deal of inconvenience in supplying power to medical devices implanted in the body for a long period of time.
Therefore, there is a need for a power supply mode that does not require a wire connection to solve the existing problems of the above-described wired transmission methods.
Disclosure of Invention
The utility model aims to solve the technical problem of overcoming the defects of the prior art and providing a wireless power supply device for realizing wireless power supply between a power supply source and a load.
In order to solve the technical problems, the technical scheme of the utility model is as follows:
a wireless power supply device comprises a wireless power supply and a wireless receiving module;
the wireless power supply comprises an ACDC conversion module, a DCAC inversion module, a first oscillation circuit and a first coil, wherein the input end of the ACDC conversion module is connected with external alternating current, the output end of the ACDC conversion module is connected with the input end of the DCAC inversion module, the output end of the DCAC inversion module is connected with the input end of the first oscillation circuit, and the output end of the first oscillation circuit is connected with the first coil;
the wireless receiving module comprises a second coil, a second oscillation circuit and a power supply conversion module, wherein the second coil is connected with the input end of the second oscillation circuit, the output end of the second oscillation circuit is connected with the input end of the power supply conversion module, and the output end of the power supply conversion module supplies power to a load;
the first coil and the second coil are mutually inductive.
Further, the input end of the ACDC conversion module is connected with a kilowatt-hour meter.
Further, the ACDC conversion module comprises a rectifier bridge B1 and a power management module, wherein the input end of the rectifier bridge B1 is connected with external alternating current, the output end of the rectifier bridge B1 is connected with the input end of the power management module, and the output end of the power management module is connected with the input end of the first oscillation circuit.
Further, the first oscillating circuit comprises a resistor Ra, an inductor La and a capacitor Ca, one end of the resistor Ra is connected with the output end of the DCAC inversion module, the other end of the resistor Ra is connected with one end of the inductor La, the other end of the inductor La is connected with one end of the capacitor Ca, the other end of the capacitor Ca is connected with one end of the first coil, and the other end of the first coil is connected with the output end of the DCAC inversion module.
Further, the second tank circuit includes a resistor Rb, an inductor Lb and a capacitor Cb, where one end of the resistor Rb is connected to one end of the second coil, the other end of the resistor Rb is connected to one end of the inductor Lb, the other end of the inductor Lb is connected to one end of the capacitor Cb, the other end of the capacitor Cb is connected to the other end of the second coil, and the capacitor Cb outputs power to the power conversion module.
By adopting the technical scheme, the wireless power supply is adopted to carry out wireless induction power supply on the wireless receiving module, and then the wireless receiving module is used to supply power to the load, so that the electric energy supply mode without wire connection is realized. The wireless power supply and the wireless receiving module comprise an oscillating circuit and a patch coil, the two groups of oscillating circuits and the patch coil form a circuit framework of wireless power supply of the double-resonant air-core transformer, and the double coils are mutually transformed through the air-isolating magnetic circuit, so that wireless power supply is realized, the wireless power supply is applicable to various inconvenient wire connection power supply conditions, and the circuit structure is simple and good in stability.
Drawings
Fig. 1 is a schematic block diagram of a wireless power supply device according to a first embodiment of the present utility model;
fig. 2 is a schematic circuit diagram of an ACDC conversion module according to a first embodiment of the present utility model;
fig. 3 is a schematic circuit diagram of the mutual inductance of the first coil and the second coil according to the first embodiment of the present utility model;
fig. 4 is a schematic circuit diagram of a DCAC inverter module according to a first embodiment of the present utility model;
fig. 5 is a schematic block diagram of a wireless power supply device according to a second embodiment of the present utility model.
Detailed Description
In order that the utility model may be more readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments that are illustrated in the appended drawings.
Example 1
As shown in fig. 1, the present embodiment provides a wireless power supply device, which includes a wireless power supply and a wireless receiving module. The wireless power supply converts 220V commercial power into direct current, then converts the direct current into high-frequency alternating current through inversion, is connected to a first coil of the wireless power supply through an oscillating circuit, and the wireless receiving module carries out mutual inductance through a second coil and then converts the alternating current sensed by the second coil into power for a load to realize wireless power supply to the load.
As shown in fig. 2 and 3, the wireless power supply of this embodiment includes an ACDC conversion module, a DCAC inverter module, a first tank circuit and a first coil, where an input end of the ACDC conversion module is connected to an external ac power, an output end of the ACDC conversion module is connected to an input end of the DCAC inverter module, an output end of the DCAC inverter module is connected to an input end of the first tank circuit, and an output end of the first tank circuit is connected to the first coil.
As shown in fig. 2, the ACDC conversion module in the wireless power supply includes a rectifier bridge B1 and a power management module, an input end of the rectifier bridge B1 is connected with external ac, an output end of the rectifier bridge B1 is connected with an input end of the power management module, and an output end of the power management module is connected with an input end of the first tank circuit.
The rectifier bridge B1 in the ACDC conversion module is composed of diodes D1-D4, and a power management chip U1 is adopted by the power management module, and the model is MC33232. The rectifier bridge B1 rectifies 220V alternating current, rectifies the 220V alternating current into direct current, obtains a stable direct current power supply V1 through circuits such as a power management chip U1, a choke coil T1, a triode Q1 and the like, and outputs the direct current power supply V1 to the DCAC inversion module.
Then, as shown in fig. 3 and 4, the power tube IGBT in the DCAC inversion module is used for 1 And IGBT (insulated Gate Bipolar transistor) 2 Under the action of the signal voltages Ug1 and Ug2, a high-frequency voltage Vac is output, the current of which is fed to the first tank circuit. The first oscillating circuit comprises a resistor Ra, an inductor La and a capacitor Ca, wherein one end of the resistor Ra is connected with the output end of the DCAC inversion module, the other end of the resistor Ra is connected with one end of the inductor La, the other end of the inductor La is connected with one end of the capacitor Ca, the other end of the capacitor Ca is connected with one end of the first coil, and the other end of the first coil is connected with the output end of the DCAC inversion module.
In addition, the input end of the ACDC conversion module is connected with a kilowatt-hour meter, so that the electricity consumption can be measured.
As shown in fig. 3, the wireless receiving module of the embodiment includes a second coil, a second oscillating circuit and a power conversion module, the first coil and the second coil are mutually transformed, the second coil is connected with an input end of the second oscillating circuit, an output end of the second oscillating circuit is connected with an input end of the power conversion module, and an output end of the power conversion module supplies power to a load. The second oscillating circuit comprises a resistor Rb, an inductor Lb and a capacitor Cb, one end of the resistor Rb is connected with one end of the second coil, the other end of the resistor Rb is connected with one end of the inductor Lb, the other end of the inductor Lb is connected with one end of the capacitor Cb, the other end of the capacitor Cb is connected with the other end of the second coil, and the capacitor Cb outputs power to the power conversion module.
The first coil and the second coil are mutually induced, and the second coil outputs the second coil to the second oscillation circuit. And then the capacitor Cb outputs power, and the power is converted by the power conversion module to output direct current or alternating current to supply power to a load (such as a bulb). The power conversion module in this embodiment may be an AC/DC module or an AC/AC module, and may be selected according to the type of load.
Example two
As shown in fig. 5, the present embodiment provides a wireless power supply device, which includes a wireless power supply and a plurality of wireless receiving modules, and can implement wireless power supply from the wireless power supply to a plurality of loads.
The technical problems, technical solutions and advantageous effects solved by the present utility model have been further described in detail in the above-described embodiments, and it should be understood that the above-described embodiments are only illustrative of the present utility model and are not intended to limit the present utility model, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present utility model should be included in the scope of protection of the present utility model.
Claims (5)
1. A wireless power supply device, characterized in that: the wireless power supply comprises a wireless power supply and a wireless receiving module;
the wireless power supply comprises an ACDC conversion module, a DCAC inversion module, a first oscillation circuit and a first coil, wherein the input end of the ACDC conversion module is connected with external alternating current, the output end of the ACDC conversion module is connected with the input end of the DCAC inversion module, the output end of the DCAC inversion module is connected with the input end of the first oscillation circuit, and the output end of the first oscillation circuit is connected with the first coil;
the wireless receiving module comprises a second coil, a second oscillation circuit and a power supply conversion module, wherein the second coil is connected with the input end of the second oscillation circuit, the output end of the second oscillation circuit is connected with the input end of the power supply conversion module, and the output end of the power supply conversion module supplies power to a load;
the first coil and the second coil are mutually inductive.
2. The wireless power supply of claim 1, wherein: and the input end of the ACDC conversion module is connected with a kilowatt-hour meter.
3. The wireless power supply of claim 1, wherein: the ACDC conversion module comprises a rectifier bridge B1 and a power management module, wherein the input end of the rectifier bridge B1 is connected with external alternating current, the output end of the rectifier bridge B1 is connected with the input end of the power management module, and the output end of the power management module is connected with the input end of the first oscillation circuit.
4. The wireless power supply of claim 1, wherein: the first oscillating circuit comprises a resistor Ra, an inductor La and a capacitor Ca, one end of the resistor Ra is connected with the output end of the DCAC inversion module, the other end of the resistor Ra is connected with one end of the inductor La, the other end of the inductor La is connected with one end of the capacitor Ca, the other end of the capacitor Ca is connected with one end of a first coil, and the other end of the first coil is connected with the output end of the DCAC inversion module.
5. The wireless power supply of claim 1, wherein: the second oscillating circuit comprises a resistor Rb, an inductor Lb and a capacitor Cb, one end of the resistor Rb is connected with one end of the second coil, the other end of the resistor Rb is connected with one end of the inductor Lb, the other end of the inductor Lb is connected with one end of the capacitor Cb, the other end of the capacitor Cb is connected with the other end of the second coil, and the capacitor Cb outputs power to the power conversion module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320409665.2U CN219875212U (en) | 2023-03-07 | 2023-03-07 | Wireless power supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320409665.2U CN219875212U (en) | 2023-03-07 | 2023-03-07 | Wireless power supply device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219875212U true CN219875212U (en) | 2023-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320409665.2U Active CN219875212U (en) | 2023-03-07 | 2023-03-07 | Wireless power supply device |
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| Country | Link |
|---|---|
| CN (1) | CN219875212U (en) |
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- 2023-03-07 CN CN202320409665.2U patent/CN219875212U/en active Active
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