CN216530736U - LED display fan wireless power supply circuit and LED display fan - Google Patents
LED display fan wireless power supply circuit and LED display fan Download PDFInfo
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- CN216530736U CN216530736U CN202122907961.9U CN202122907961U CN216530736U CN 216530736 U CN216530736 U CN 216530736U CN 202122907961 U CN202122907961 U CN 202122907961U CN 216530736 U CN216530736 U CN 216530736U
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Abstract
The utility model relates to the technology of LED display fans, discloses a wireless power supply circuit of an LED display fan and the LED display fan, and aims to solve the problem that the existing LED display fan is not provided with a wireless power supply mode. The wireless power supply circuit of the LED display fan and the LED display fan provided by the utility model adopt a wireless power supply mode, namely a non-contact power supply mode, and utilize the electromagnetic induction principle to carry out energy conversion so as to provide stable wireless power supply. The LED display fan intelligent device has the advantages of low cost, stable power supply, high reliability, long service life and no noise, and can completely meet the power supply requirement of the LED display fan intelligent device.
Description
Technical Field
The utility model relates to the technology of LED display fans, in particular to a wireless power supply circuit of an LED display fan and the LED display fan.
Background
With the development of science and technology, wireless charging is widely applied in recent years, various wireless charging technical schemes appear on the market, but a wireless power supply mode is not adopted in an LED display fan at present. In the existing LED display fan and intelligent device with motion system, the common power supply schemes include battery power supply and brush power supply. The battery power supply mode is simple and convenient, but the system weight is increased, the rotating speed is influenced, the cost is high, and the service life is short; the brush supplies power to transmit larger current, but can generate larger noise and vibration when rotating at high speed, and the structural installation is also complicated in production.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims to provide an LED display fan wireless power supply circuit and an LED display fan, and aims to solve the problem that the existing LED display fan does not have a wireless power supply mode.
The utility model is realized by the following technical scheme:
a wireless power supply circuit of an LED display fan comprises a power supply module, a wireless power supply transmitting module and a wireless power supply receiving module, wherein the power supply module is connected with the wireless power supply transmitting module;
the wireless power supply transmitting module comprises a wireless power supply transmitting chip and a transmitting control circuit, and the wireless power supply transmitting chip is connected with the power supply module and the transmitting control circuit;
the wireless power supply receiving module comprises a wireless power supply receiving chip, a switch unit, a sampling unit and a control unit, wherein the wireless power supply receiving chip is connected with the switch unit, the sampling unit and the control unit, and the switch unit is connected with the sampling unit and the control unit;
the transmitting control circuit is internally provided with a transmitting inductance coil, the control unit is internally provided with a receiving inductance coil, and the transmitting inductance coil is aligned with the receiving inductance coil to generate coupling.
Further, the transmission control circuit includes a resistor R1, a resistor R2, a capacitor C1, a capacitor C2 and a transmission inductor, the 1 st pin of the wireless power supply transmission chip is connected with one end of the resistor R2, the other end of the resistor R2 is connected with one end of the resistor R1 and the 2 nd pin of the wireless power supply transmission chip, the 5 th pin of the wireless power supply transmission chip is connected with one end of the capacitor C2 and one end of the transmission inductor, the 7 th pin of the wireless power supply transmission chip is connected with the other end of the capacitor C2 and the other end of the transmission inductor, the voltage output end of the power supply module is connected with the 7 th pin of the wireless power supply transmission chip, one end of the capacitor C1, the 8 th pin of the wireless power supply transmission chip and the other end of the resistor R1, the other end of the capacitor C1 is grounded, and the 3 rd pin and the 4 th pin of the wireless power supply transmission chip are grounded.
Further, the type of the wireless power supply transmitting chip is XKT-511.
Further, the capacitor C2 is an NPO capacitor.
Further, the switch unit comprises a resistor R9, a resistor R10, a capacitor C6 and a PMOS tube Q1, the sampling unit comprises a resistor R11 and a resistor R12, and the control unit comprises a diode D1, a diode D2, a resistor R7, a resistor R8, a capacitor C3, a capacitor C4, a capacitor C5 and a receiving inductor;
the grid of the PMOS tube Q1 is respectively connected with one end of a resistor R9 and the 2 nd pin of the wireless power supply receiving chip, the other end of the resistor R9 is connected with the source of the PMOS tube Q1, the 3 rd pin of the wireless power supply receiving chip is commonly connected with one end of a resistor R10, one end of a resistor R11 and one end of a resistor R12, the other end of the resistor R10 is respectively connected with the source of the PMOS tube Q1 and one end of a capacitor C6, the other end of the capacitor C6 is grounded, the other end of the resistor R11 is connected with VDD, the other end of the resistor R12 is grounded, the drain of the PMOS tube Q1 is connected with the drain of the PMOS tube Q1, the anode of a diode D1 is connected with the source of the PMOS tube Q1, the anode of the diode D1 is connected with the anode of the diode D2, one end of the capacitor C3, one end of the capacitor C4 and one end of the receiving inductance coil, the cathode of the diode D2 is connected with one end of the resistor R7, the 5 th pin of the wireless power supply receiving chip is connected with one end of the resistor R7, the other end of the resistor R8 and the capacitor C5, the 4 th pin of the wireless power supply receiving chip, the other end of the resistor R8, the other end of the capacitor C5, the other end of the capacitor C3, the other end of the capacitor C4 and the other end of the receiving inductance coil are grounded, the 1 st pin of the wireless power supply receiving chip is connected with the anode of the diode D3, and the cathode of the diode D3 is grounded.
Further, the type of the wireless power supply receiving chip is XKT-R2.
Further, the capacitor C3 and the capacitor C4 are NPO capacitors.
Further, the model of the PMOS tube Q1 is SI 2305.
Further, the inductance ratio of the transmitting inductance coil to the receiving inductance coil is 1: 1.
An LED display fan comprises the LED display fan wireless power supply circuit.
Compared with the prior art, the wireless power supply circuit of the LED display fan and the LED display fan provided by the utility model adopt a wireless power supply mode, namely a non-contact power supply mode, and utilize the electromagnetic induction principle to perform energy conversion so as to provide stable wireless power supply. The utility model has the advantages of low cost, stable power supply, high reliability, long service life and no noise, and can completely meet the power supply requirement of the intelligent equipment of the LED display fan.
Drawings
FIG. 1 is a schematic diagram of an overall architecture of a wireless power supply circuit for an LED display fan according to the present invention;
FIG. 2 is a schematic diagram of a circuit structure of a wireless power supply emission module in the wireless power supply circuit of the LED display fan and a connection between the wireless power supply emission module and a power supply module;
fig. 3 is a schematic circuit structure diagram of a wireless power receiving module in the wireless power supply circuit of the LED display fan according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following embodiments and the accompanying drawings.
As shown in fig. 1, the wireless power supply circuit for an LED display fan according to an embodiment of the present invention includes a power supply module 1, a wireless power supply transmitting module 2, and a wireless power supply receiving module 3, where the power supply module 1 is connected to the wireless power supply transmitting module 2, and the wireless power supply transmitting module 2 is connected to the wireless power supply receiving module 3. The power supply module 1 supplies power for direct current 5V and is used for providing a power supply required by the wireless power supply transmitting module 2 for transmitting electric energy.
As shown in fig. 2 and fig. 3, the wireless power supply transmission module 2 includes a wireless power supply transmission chip 21 (i.e., U1) and a transmission control circuit 22, and the wireless power supply transmission chip 21 is connected to the power supply module 1 and the transmission control circuit 22. The wireless power supply receiving module 3 includes a wireless power supply receiving chip 31 (i.e., U3), a switch unit 32, a sampling unit 33, and a control unit 34, wherein the wireless power supply receiving chip 31 is connected to the switch unit 32, the sampling unit 33, and the control unit 34, and the switch unit 32 is connected to the sampling unit 33 and the control unit 34. A transmitting inductor L1 is disposed in the transmitting control circuit 22, a receiving inductor L2 is disposed in the control unit 34, and the transmitting inductor L1 is aligned with the receiving inductor L2 to generate coupling. The transmitting inductance coil L1 in the wireless power transmitting module 2 serves as a primary coil to transmit the electric energy provided by the power supply module 1 in the form of electromagnetic waves, and the receiving inductance coil L2 in the wireless power receiving module 3 serves as a secondary coil to convert the received electromagnetic waves into electric energy according to the electromagnetic induction phenomenon and provide the electric energy for a secondary circuit. The rear-stage circuit can provide electric energy required by display and rotation for the LED display fan by rectifying, filtering and the like the electric energy. In this embodiment, the output voltage of the wireless power receiving module 3 is 4.2V, which provides stable power supply for the display control board of the LED display fan. The circuit is simple in form, the periphery of the circuit does not need too many elements, the use cost is low, and the cost performance is high.
As shown in fig. 2, in the present embodiment, the transmission control circuit 22 includes a resistor R1, a resistor R2, a capacitor C1, a capacitor C2, and a transmission inductor L1. The wireless power supply transmitting chip 21 is of a XKT-511 type and is packaged by SOP 8. The 1 st pin of the wireless power supply transmitting chip 21 is connected with one end of the resistor R2, the other end of the resistor R2 is connected with one end of the resistor R1 and the 2 nd pin of the wireless power supply transmitting chip 21, and a series resistor formed by the resistor R1 and the resistor R2 can play a role in frequency adjustment. The 5 th pin of the wireless power supply transmitting chip 21 is connected with one end of the capacitor C2 and one end of the transmitting inductance coil L1, and the 7 th pin of the wireless power supply transmitting chip 21 is connected with the other end of the capacitor C2 and the other end of the transmitting inductance coil L1. The capacitor C2 is an extremely important element and must be an NPO capacitor. The voltage output end of the power supply module 1 is connected with the 7 th pin of the wireless power supply emission chip 21, one end of a capacitor C1, the 8 th pin of the wireless power supply emission chip 21 is connected with the other end of a resistor R1, the 7 th pin of the power supply emission chip is a VDD power supply, the 8 th pin of the power supply emission chip is a control pin, the power supply is turned on by pulling up to turn on a 5V power supply, the power supply is turned off by pulling down, the 8 th pin of the power supply emission chip is directly pulled up to be electrically connected with the 7 th pin +5V of the power supply emission chip in the embodiment, and the power supply module is connected with a capacitor C2. The voltage output terminal voltage of the power supply module 1 is 5V. The other end of the capacitor C1 is grounded, and the capacitor C1 is a filter capacitor. The 3 rd pin and the 4 th pin of the wireless power transmitting chip 21 are grounded. The wireless power supply transmitting module 2 has simple circuit, few peripheral components and high output power.
As shown in fig. 3, the wireless power receiving chip 31 in the wireless power receiving module 3 is a wireless receiving charging type IC, and the model of the wireless power receiving chip 31 is XKT-R2. The switching unit 32 comprises a resistor R9, a resistor R10, a capacitor C6 and a PMOS tube Q1, the sampling unit 33 comprises a resistor R11 and a resistor R12, and the control unit 34 comprises a diode D1, a diode D2, a resistor R7, a resistor R8, a capacitor C3, a capacitor C4, a capacitor C5 and a receiving inductance coil L2.
The gate of the PMOS transistor Q1 is connected to one end of the resistor R9 and the 2 nd pin of the wireless power receiving chip 31, respectively, the other end of the resistor R9 is connected to the source of the PMOS transistor Q1, the 2 nd pin of the wireless power receiving chip 31 is an output switch pin, the model of the PMOS transistor Q1 is SI2305, and the wireless power receiving chip is used as a switch in the present invention. The 3 rd pin of the wireless power supply receiving chip 31 is commonly connected with one end of the resistor R10, one end of the resistor R11 and one end of the resistor R12, and the other end of the resistor R10 is respectively connected with the source of the PMOS transistor Q1 and one end of the capacitor C6. The resistor R10 prevents the PMOS transistor Q1 from being naturally conducted. The other end of the capacitor C6 is grounded, and the other end of the resistor R11 is connected with VDD. The resistor R11 is used to output a cut-off voltage, and when the resistance of the adjusting resistor R11 is increased, the cut-off voltage is increased, in this embodiment, the VDD voltage is 4.2V. The other end of the resistor R12 is grounded, the drain of the PMOS tube Q1 is connected with VDD, the cathode of the diode D1 is connected with the source of the PMOS tube Q1, and the anode of the diode D1 is connected with the anode of the diode D2, one end of the capacitor C3, one end of the capacitor C4 and one end of the receiving inductance coil L2. The diode D1 is a schottky diode SS34, and functions to prevent the PMOS transistor Q1 from conducting and then reversely leading current, and also functions as a rectifier. The cathode of the diode D2 is connected to one end of the resistor R7. Diode D2 is model IN 4148. The 5 th pin of the wireless power supply receiving chip 31 is connected with the other end of the resistor R7, one end of the resistor R8 and one end of the capacitor C5, and the 4 th pin of the wireless power supply receiving chip 31, the other end of the resistor R8, the other end of the capacitor C5, the other end of the capacitor C3, the other end of the capacitor C4 and the other end of the receiving inductance coil L2 are grounded. The capacitor C3 and the capacitor C4 are very important elements and must be NPO capacitors. The resistor R8 and the capacitor C5 play a role in current limiting and filtering. The 1 st pin of the wireless power receiving chip 31 is connected to the anode of the diode D3, and the cathode of the diode D3 is grounded. In this embodiment, the diode D3 is a 3V zener diode, which functions as a voltage regulator.
In this embodiment, the transmitting inductor L1 and the receiving inductor L2 are both 5uH, and a PCB drawing coil is used. The inductance ratio of the transmitting inductor L1 to the receiving inductor L2 is 1:1, and the circuit is suitable for circuits with output voltage lower than power supply voltage.
Based on the wireless power supply circuit for the LED display fan, the embodiment of the utility model also provides the LED display fan, which comprises the wireless power supply circuit for the LED display fan.
The wireless power supply circuit of the LED display fan and the LED display fan provided by the utility model adopt a wireless power supply mode, namely a non-contact power supply mode, and utilize the electromagnetic induction principle to carry out energy conversion so as to provide stable wireless power supply. The LED display fan intelligent device has the advantages of low cost, stable power supply, high reliability, long service life and no noise, and can completely meet the power supply requirement of the LED display fan intelligent device.
The above-described embodiments are merely preferred embodiments, which are not intended to limit the scope of the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The wireless power supply circuit of the LED display fan is characterized by comprising a power supply module, a wireless power supply transmitting module and a wireless power supply receiving module, wherein the power supply module is connected with the wireless power supply transmitting module;
the wireless power supply transmitting module comprises a wireless power supply transmitting chip and a transmitting control circuit, and the wireless power supply transmitting chip is connected with the power supply module and the transmitting control circuit;
the wireless power supply receiving module comprises a wireless power supply receiving chip, a switch unit, a sampling unit and a control unit, wherein the wireless power supply receiving chip is connected with the switch unit, the sampling unit and the control unit, and the switch unit is connected with the sampling unit and the control unit;
the transmitting control circuit is internally provided with a transmitting inductance coil, the control unit is internally provided with a receiving inductance coil, and the transmitting inductance coil is aligned with the receiving inductance coil to generate coupling.
2. The LED display fan wireless power supply circuit of claim 1, the transmitting control circuit comprises a resistor R1, a resistor R2, a capacitor C1, a capacitor C2 and a transmitting inductance coil, a 1 st pin of the wireless power supply transmitting chip is connected with one end of a resistor R2, the other end of a resistor R2 is connected with one end of the resistor R1 and a 2 nd pin of the wireless power supply transmitting chip, a 5 th pin of the wireless power supply transmitting chip is connected with one end of the capacitor C2 and one end of the transmitting inductance coil, a 7 th pin of the wireless power supply transmitting chip is connected with the other end of the capacitor C2 and the other end of the transmitting inductance coil, a voltage output end of the power supply module is connected with a 7 th pin of the wireless power supply transmitting chip, one end of the capacitor C1, an 8 th pin of the wireless power supply transmitting chip and the other end of the resistor R1, the other end of the capacitor C1 is grounded, and a 3 rd pin and a 4 th pin of the wireless power supply transmitting chip are grounded.
3. The LED display fan wireless power supply circuit of claim 2, wherein the wireless power transmitting chip is of type XKT-511.
4. The LED display fan wireless power supply circuit as claimed in claim 2, wherein the capacitor C2 is an NPO capacitor.
5. The wireless power supply circuit of the LED display fan as claimed in claim 1, wherein the switch unit comprises a resistor R9, a resistor R10, a capacitor C6 and a PMOS tube Q1, the sampling unit comprises a resistor R11 and a resistor R12, and the control unit comprises a diode D1, a diode D2, a resistor R7, a resistor R8, a capacitor C3, a capacitor C4, a capacitor C5 and a receiving inductor;
the grid of the PMOS tube Q1 is respectively connected with one end of a resistor R9 and the 2 nd pin of the wireless power supply receiving chip, the other end of the resistor R9 is connected with the source of the PMOS tube Q1, the 3 rd pin of the wireless power supply receiving chip is commonly connected with one end of a resistor R10, one end of a resistor R11 and one end of a resistor R12, the other end of the resistor R10 is respectively connected with the source of the PMOS tube Q1 and one end of a capacitor C6, the other end of the capacitor C6 is grounded, the other end of the resistor R11 is connected with VDD, the other end of the resistor R12 is grounded, the drain of the PMOS tube Q1 is connected with the drain of the PMOS tube Q1, the anode of a diode D1 is connected with the source of the PMOS tube Q1, the anode of the diode D1 is connected with the anode of the diode D2, one end of the capacitor C3, one end of the capacitor C4 and one end of the receiving inductance coil, the cathode of the diode D2 is connected with one end of the resistor R7, the 5 th pin of the wireless power supply receiving chip is connected with one end of the resistor R7, the other end of the resistor R8 and the capacitor C5, the 4 th pin of the wireless power supply receiving chip, the other end of the resistor R8, the other end of the capacitor C5, the other end of the capacitor C3, the other end of the capacitor C4 and the other end of the receiving inductance coil are grounded, the 1 st pin of the wireless power supply receiving chip is connected with the anode of the diode D3, and the cathode of the diode D3 is grounded.
6. The LED display fan wireless power supply circuit of claim 5, wherein the wireless power supply receiving chip is of type XKT-R2.
7. The LED display fan wireless power supply circuit as claimed in claim 5, wherein the capacitor C3 and the capacitor C4 are NPO capacitors.
8. The LED display fan wireless power supply circuit as claimed in claim 5, wherein the PMOS tube Q1 is model SI 2305.
9. The wireless power supply circuit of claim 1, wherein the ratio of the inductance of the transmitting inductor to the inductance of the receiving inductor is 1: 1.
10. An LED display fan, characterized in that, comprises the LED display fan wireless power supply circuit of any claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122907961.9U CN216530736U (en) | 2021-11-23 | 2021-11-23 | LED display fan wireless power supply circuit and LED display fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122907961.9U CN216530736U (en) | 2021-11-23 | 2021-11-23 | LED display fan wireless power supply circuit and LED display fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216530736U true CN216530736U (en) | 2022-05-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122907961.9U Active CN216530736U (en) | 2021-11-23 | 2021-11-23 | LED display fan wireless power supply circuit and LED display fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216530736U (en) |
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2021
- 2021-11-23 CN CN202122907961.9U patent/CN216530736U/en active Active
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