CN106130082A - A kind of wireless power transmission device being applied to wireless mouse - Google Patents

Abstract

The invention discloses a wireless power transmission device applied to a wireless mouse, which comprises a transmitting part installed on the mouse pad and a receiving part installed in the mouse; the transmitting part is mainly composed of a rectifying frequency conversion circuit, a transmitting circuit and a resonance It is composed of a sending circuit, which can change the power frequency AC power into high frequency power, and transmit energy in the form of electromagnetic waves. The receiving part is mainly composed of a resonant receiving circuit, a receiving circuit, and a rectifying and stabilizing circuit connected in sequence. The resonant The transmission circuit and the resonant receiving circuit form a transmission channel, which transmits energy to the receiving circuit, and then through the rectification and stabilization circuit, converts the electric energy into DC electric energy, provides electric energy to the mouse, and at the same time charges the supercapacitor of the rectification and stabilization circuit. The invention can effectively solve the online power transmission problem of the wireless mouse, facilitate the use of the wireless mouse, and reduce the impact on the environment due to the use of batteries.

Description

A wireless power transmission device applied to a wireless mouse

technical field

The invention relates to the field of low-power wireless power transmission, in particular to a wireless power transmission device applied to a wireless mouse.

Background technique

At present, most wireless mice are powered by batteries. The production and recycling of batteries will cause environmental pollution, and also increase the weight of the mouse, reducing the comfort. Magnetic coupling resonance wireless power transmission technology is a new technology for medium-distance high-efficiency power transmission. The transmission process does not require physical connection, and power can be transmitted to the load through space without contact. At the same time, the characteristics of supercapacitors such as fast charging, rechargeable and high energy density make their application in some low-power scenarios very flexible.

Contents of the invention

The purpose of the present invention is to overcome the shortcomings and deficiencies of the prior art, and provide a wireless power transmission device for a wireless mouse that combines magnetic coupling resonance wireless power transmission technology and a supercapacitor. The device can effectively solve the online power transmission problem of the wireless mouse, and It is convenient to use the wireless mouse, and reduces the impact on the environment due to the use of batteries.

In order to achieve the above object, the technical solution provided by the present invention is: a wireless power transmission device applied to a wireless mouse, including a transmitting part installed on the mouse pad and a receiving part installed in the mouse; the transmitting part is mainly composed of It is composed of a rectifying frequency conversion circuit, a sending circuit and a resonant sending circuit, which can change the power frequency AC power into high frequency power and transmit energy in the form of electromagnetic waves. The receiving part is mainly composed of a resonant receiving circuit and a receiving circuit connected in sequence. , rectification and voltage stabilization circuit, the resonant sending circuit and the resonant receiving circuit constitute a transmission channel, the energy is transmitted to the receiving circuit, and then through the rectifying and stabilizing circuit, the electric energy is converted into DC electric energy to provide electric energy to the mouse, and at the same time for the rectification The supercapacitor charging of the voltage stabilizing circuit; the rectification and frequency conversion circuit is mainly composed of a connected first rectifier bridge and a frequency conversion circuit. The first rectification bridge mainly converts the input AC power into DC power, and the frequency conversion circuit mainly converts the DC Converted to high-frequency alternating current; the sending loop is mainly composed of a connected sending coil and a first compensation capacitor, the characteristics of the sending coil are determined by the power required by the system, and the first compensation capacitor is selected from mica with optimal efficiency Capacitor; the resonant sending circuit is mainly composed of the first resonant coil and the first resonant capacitor connected to each other, and its resonant frequency is the AC frequency generated by the rectification and frequency conversion circuit. The first resonant coil is wound by Litz wire. The first resonant The capacitor adopts a mica capacitor that matches the resonant frequency; the resonant receiving circuit is mainly composed of a connected second resonant coil and a second resonant capacitor, the resonant frequency of which is the frequency of the AC source of the transmitting part, and the second resonant coil is wound by a Litz wire system, the second resonant capacitor adopts a mica capacitor that matches the resonant frequency; the receiving circuit is mainly composed of a connected receiving coil and a second compensation capacitor, the characteristics of the receiving coil are determined by the power required by the system, and the second The compensation capacitor selects the mica capacitor under the optimal efficiency; the rectification and voltage stabilization circuit is mainly composed of a second rectifier bridge, a voltage stabilization circuit, and a supercapacitor connected in sequence, and the second rectifier bridge mainly converts alternating current into pulsating direct current , stabilize the voltage on the supercapacitor through the control of the voltage stabilizing circuit, so that it can stably supply power to the mouse; wire connection.

Compared with the prior art, the present invention has the following advantages and beneficial effects:

1. Solve the power consumption problem of the mouse and remove the traditional battery.

2. Using magnetic coupling resonance wireless power transmission technology, the system transmission power and transmission efficiency are improved.

Description of drawings

Fig. 1a is a schematic diagram of the transmitting part of the wireless power transmission device on the mouse pad.

FIG. 1b is a schematic diagram of the receiving part of the wireless power transmission device inside the mouse.

FIG. 2 is a schematic diagram of a resonant receiving circuit.

Figure 3 is a schematic diagram of the receiving circuit.

FIG. 4 is a schematic diagram of a rectification and voltage stabilization circuit.

FIG. 5 is a schematic diagram of a rectification and frequency conversion circuit.

FIG. 6 is a schematic diagram of a sending loop.

Fig. 7 is a schematic diagram of a resonant sending circuit.

detailed description

The present invention will be further described below in conjunction with specific examples.

As shown in Fig. 1a and Fig. 1b, the wireless power transmission device applied to the wireless mouse described in this embodiment combines the advantages of the magnetic coupling resonance wireless power transmission technology and the characteristics of the supercapacitor to realize the wireless charging of the mouse. The wireless power transmission device is mainly composed of a transmitting part installed on the mouse pad and a receiving part installed in the mouse; the transmitting part is mainly composed of a rectifying frequency conversion circuit 4, a transmitting circuit 5 and a resonant transmitting circuit 6 connected in sequence, and can The power frequency alternating current energy becomes high frequency electric energy, and transmits energy in the form of electromagnetic waves. The receiving part is mainly composed of a resonant receiving circuit 1, a receiving circuit 2, and a rectifying and stabilizing circuit 3 connected in sequence. The resonant transmitting circuit 6 It forms a transmission channel with the resonant receiving circuit 1, and transmits the energy to the receiving circuit 2, and then through the rectifying and stabilizing circuit 3, converts the electric energy into DC electric energy, provides electric energy to the mouse, and simultaneously charges the supercapacitor 33 of the rectifying and stabilizing circuit 3 .

As shown in Figure 2, the resonant receiving circuit 1 is mainly composed of a connected second resonant coil 11 and a second resonant capacitor 12, the resonant frequency of which is the frequency of the AC source of the transmitting part, and the second resonant coil 11 is composed of a high-frequency performance Excellent Litz wire winding, the second resonant capacitor 12 adopts a mica capacitor matching the resonant frequency (good high-frequency characteristics).

As shown in Figure 3, the receiving circuit 2 is mainly composed of a connected receiving coil 21 and a second compensation capacitor 22. The characteristics of the receiving coil 21 are determined by the power required by the system, and its specifications are determined by the output voltage, transmission distance and The coupling coefficient with the second resonant coil 11 is comprehensively determined, the receiving coil 21 is wound with Litz wire, and the second compensation capacitor 22 is a mica capacitor with optimal efficiency.

As shown in Figure 4, the rectification and voltage stabilization circuit 3 is mainly composed of a second rectification bridge 31, a voltage stabilization circuit 32, and a supercapacitor 33 connected in sequence. The second rectification bridge 31 mainly converts alternating current into pulsating direct current. , the voltage on the supercapacitor 33 is stabilized through the control of the voltage stabilizing circuit 32, so that it can stably supply power to the mouse.

As shown in Figure 5, the rectification and frequency conversion circuit 4 is mainly composed of a connected first rectifier bridge 41 and a frequency conversion circuit 42, the first rectification bridge 41 mainly converts the input alternating current into direct current, and the frequency conversion circuit 42 mainly It converts direct current into high frequency alternating current.

As shown in Figure 6, the transmission loop 5 is mainly composed of a connected transmission coil 51 and a first compensation capacitor 52, the characteristics of the transmission coil 51 are determined by the power required by the system, and its specifications are determined by the output voltage, transmission distance and The coupling coefficient with the second resonant coil 11 is comprehensively determined, the transmitting coil 51 is wound with Litz wire, and the first compensation capacitor 52 is a mica capacitor with optimal efficiency.

As shown in Figure 7, the resonant sending circuit 6 is mainly composed of a connected first resonant coil 61 and a first resonant capacitor 62, the resonant frequency of which is the AC frequency generated by the rectifying frequency conversion circuit 4, and the first resonant coil 61 is composed of Litz wire is wound, and the first resonant capacitor 62 is a mica capacitor that matches the resonant frequency.

During operation, the power supply input by the system is connected with the rectification and frequency conversion circuit 4, and high-frequency electromagnetic waves are generated in space through the transmission coil 51, and through the coupling effect between the transmission coil 51 and the first resonant coil 61 and the effect of the resonant transmission circuit 6, so that Energy can spread in a larger space. The second resonant coil 11 of the resonant receiving circuit 1 is coupled with the receiving coil 21 of the receiving circuit 2 through electromagnetic induction. According to the principle of magnetic coupling resonance, the resonant receiving circuit 1 and the resonant transmitting circuit 6 construct an efficient transmission channel, and transmit energy to the receiving coil 21 through coupling. The receiving circuit 2 and the rectifying and stabilizing circuit 3 are connected by wires, and the alternating current received by the receiving circuit 2 is converted into stable direct current through the second rectifying bridge 31 and the stabilizing circuit 32 , and stored in the supercapacitor 33 .

The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Therefore, all changes made according to the shape and principles of the present invention should be covered within the protection scope of the present invention.

Claims (1)

1. A wireless power transmission device applied to a wireless mouse, characterized in that: it comprises a transmitting part mounted on the mouse pad and a receiving part mounted in the mouse; It is composed of a resonant sending circuit, which can change the power frequency alternating current energy into high frequency electric energy, and transmit energy in the form of electromagnetic waves. The receiving part is mainly composed of a resonant receiving circuit, a receiving circuit, and a rectifying and stabilizing circuit connected in sequence. The resonant sending circuit and the resonant receiving circuit constitute a transmission channel, which transmits energy to the receiving circuit, and then through the rectifying and stabilizing circuit, converts the electric energy into DC electric energy, provides electric energy to the mouse, and simultaneously charges the supercapacitor of the rectifying and stabilizing circuit; The rectification and frequency conversion circuit is mainly composed of a connected first rectifier bridge and a frequency conversion circuit, the first rectification bridge mainly converts the input AC power into DC power, and the frequency conversion circuit mainly converts the DC power into high-frequency AC power; The sending loop is mainly composed of a connected sending coil and a first compensation capacitor, the characteristics of the sending coil are determined by the power required by the system, and the first compensation capacitor is a mica capacitor with optimal efficiency; the resonant sending circuit is mainly It is composed of a connected first resonant coil and a first resonant capacitor. Its resonant frequency is the AC frequency generated by the rectification and frequency conversion circuit. The first resonant coil is wound by Litz wire. The first resonant capacitor is made of mica that matches the resonant frequency. Capacitor; the resonant receiving circuit is mainly composed of a second resonant coil and a second resonant capacitor connected to each other, its resonant frequency is the frequency of the AC source of the transmitting part, the second resonant coil is wound by Litz wire, and the second resonant capacitor adopts A mica capacitor that matches the resonant frequency; the receiving circuit is mainly composed of a connected receiving coil and a second compensation capacitor, the characteristics of the receiving coil are determined by the power required by the system, and the second compensation capacitor is selected from the optimal efficiency Mica capacitor; the rectification and voltage stabilization circuit is mainly composed of a second rectifier bridge, a voltage stabilization circuit, and a super capacitor connected in sequence. The second rectification bridge mainly converts alternating current into pulsating direct current through the control of the voltage stabilization circuit The voltage on the supercapacitor is stabilized so that it can stably supply power to the mouse; the resonant receiving circuit is connected to the receiving coil of the receiving circuit through space coupling, and the receiving circuit is connected to the rectifying and stabilizing circuit through wires.