CN103730932A - Wireless charging system - Google Patents
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- CN103730932A CN103730932A CN201310710783.8A CN201310710783A CN103730932A CN 103730932 A CN103730932 A CN 103730932A CN 201310710783 A CN201310710783 A CN 201310710783A CN 103730932 A CN103730932 A CN 103730932A
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Abstract
The invention relates to a wireless charging system which comprises a transmitter and a receiver. The transmitter comprises an oscillator, an amplifier and a transmitting coil module. An alternating-current signal generated by the oscillator is amplified by the amplifier, and then the amplified alternating-current signal is generated. The amplified alternating-current signal generates a magnetic field with the near-field communication frequency after flowing through the transmitting coil module. A receiving coil module of the receiver generates an alternating current under the action of magnetic field coupling and coverts the alternating current into a direct voltage under the action of a rectification module and a voltage stabilization module so as to charge a charging battery. The magnetic field frequency generated by the transmitting coil module is the near-field communication frequency. The magnetic field can generate an electromagnetic signal to be communicated with other devices, and can also interact with the receiving coil module on the receiver so as to charge the charging battery, so that the cost is lower; meanwhile, the current generated after the coupling action of the receiving coil module and the transmitting coil module is smaller, and the wireless charging system is applicable to a miniaturization electronic device.
Description
Technical field
The present invention relates to wireless charging technical field, relate in particular to a kind of wireless charging system.
Background technology
Along with the various electronic equipments of scientific and technological development are applied increasingly extensive in people's daily life, and the upper rechargeable battery using of electronic equipment (for example dynamic token) discharge and recharge the focus that becomes concern, in prior art, the general USB line that adopts charges, portable not; And when electronic equipment charges by USB line, USB interface need to be set on electronic equipment, be unfavorable for waterproof, the antistatic design of electronic equipment, USB interface is mechanical connection manner simultaneously, repeatedly after plug, is prone to the situation of loose contact.
For above-mentioned technical problem, prior art proposes wireless charging system, comprise reflector and receiver, reflector is by power supply changeover device, driver, transmitting coil, voltage and current detects and controller composition, receiver is by receiving coil, rectification module, Voltage Regulator Module and controller composition, electric power transmits by the coupled magnetic field forming between transmitting coil and receiving coil, and this coupled magnetic field is formed through reflector by alternating current, if receiving coil is comparatively approaching, the field line of most of coupled magnetic field can be coupled to receiving coil and form alternating current, to its rectification, can form direct voltage, this reflector and receiver adopt QI standard, need to be according to standard coiling, cost is high, and charging current is larger, the battery that is not suitable for low capacity on miniaturized electronics carries out wireless charging.
Summary of the invention
Main purpose of the present invention is to provide a kind of wireless charging system, when being intended to reduce the cost of wireless charging system, reduces charging current, reduces the volume of wireless charging system, is convenient to the portability design of electronic equipment.
The present invention proposes a kind of wireless charging system, comprises the reflector being electrically connected with power supply and the receiver being electrically connected with rechargeable battery, and described reflector comprises oscillator, amplifier and the transmitting coil module of electrical connection successively; Described receiver comprises receiving coil module, rectification module and the Voltage stabilizing module of electrical connection successively; The input of described oscillator is connected with the output of power supply, and output is connected with the input of amplifier; Two outputs of described amplifier respectively with the corresponding connection of two inputs of described transmitting coil module; Two outputs of described receiving coil module respectively with the corresponding connection of two inputs of described rectification module, two outputs of described rectification module respectively with the corresponding connection of two inputs of described Voltage stabilizing module, the output of described Voltage stabilizing module is connected with described rechargeable battery, wherein:
The AC signal that described oscillator produces is sent to transmitting coil module after amplifier amplifies, it is the magnetic field of near-field communication frequency that described transmitting coil module produces frequency, under the effect in the magnetic field that described receiving coil module produces in described transmitting coil module, generation current signal and after the rectifying and voltage-stabilizing effect of rectification module and Voltage stabilizing module, convert direct current signal to, this DC signal output to rechargeable battery charges to rechargeable battery.
Preferably, described receiving coil module comprises the receiving coil between two inputs that are connected to described rectification module, and described receiving coil is arranged on the circuit board at described receiver place in the mode of PCB layout.
Preferably,, described receiver also comprises the charging protecting module being connected with described rechargeable battery, described charging protecting module produces cue for detection of battery electric quantity and when battery electric quantity is full of.
Preferably, described oscillator comprises the first electric capacity, the second electric capacity, crystal oscillator, the first resistance, the second resistance, the first inverter and the second inverter, wherein:
The first end of described crystal oscillator is through described the first capacity earth, and the second end is through described the second capacity earth; The input of described the first inverter is connected with the first end of described crystal oscillator, and the output of described the first inverter is divided into two-way, and road first resistance is connected with the second end of crystal oscillator, and another road is connected with the input of the second inverter; The output of described the second inverter is connected with described amplifier; Described second resistance one end is connected with the input of described the first inverter, and the other end is connected with the second end of described crystal oscillator.
Preferably, described amplifier comprises the 3rd inverter, the 4th inverter, the 5th inverter, the 3rd resistance, the 4th resistance, metal-oxide-semiconductor, the 3rd electric capacity, the 4th electric capacity, variable capacitance and the 5th resistance, wherein:
The input of described the 3rd inverter is connected with the output of the second inverter, and output is connected with the grid of described metal-oxide-semiconductor; Described the 3rd inverter, the 4th inverter and the 5th inverter parallel connection; The drain electrode of described metal-oxide-semiconductor is connected with the grid of described metal-oxide-semiconductor through described the 3rd resistance, and the grid of described metal-oxide-semiconductor is through described the 4th grounding through resistance, the source ground of described metal-oxide-semiconductor; The first input end of described the 3rd electric capacity one end, one end of described variable capacitance, one end of described the 5th resistance, one end of described the 4th electric capacity, described transmitting coil module is interconnected between two; The other end of described the 3rd electric capacity divides two-way, and a road is connected with the drain electrode of described metal-oxide-semiconductor, a road and described transmitting coil module the second input be connected; The other end of described variable capacitance and described transmitting coil module the second input be connected; The other end of described the 5th resistance is connected with power input; The other end ground connection of described the 4th electric capacity.
Preferably, described transmitting coil module comprises transmitting coil, and described transmitting coil is in parallel with described variable capacitance.
Preferably, described receiving coil module also comprises the 5th electric capacity, the 6th electric capacity, the 7th electric capacity, wherein:
Two-way is divided in described the 5th electric capacity one end, and a road is connected with the first end of described receiving coil, and another Lu Jing six electric capacity are connected with the second end of described receiving coil, and described the 5th electric capacity other end is connected with the first input end of described rectification module; Described the 7th electric capacity one end is connected with the second end of described receiving coil, and the other end is connected with the second input of described rectification module.
Preferably, described rectification module comprises the first diode, the second diode, the 3rd diode and the 4th diode, wherein:
The positive pole of described the first diode divides two-way, and a road is connected with the first input end of described Voltage stabilizing module, and another road is connected with the positive pole of described the second diode, and the negative pole of described the first diode is connected with the positive pole of described the 3rd diode; The positive pole of described the 3rd diode is connected with the first end of described receiving coil through described the 5th electric capacity, and the negative pole of described the 3rd diode is connected with the second input of described Voltage stabilizing module; The negative pole of described the 4th diode is connected with the negative pole of described the 3rd diode, and the positive pole of described the 4th diode divides two-way, and a road is connected with the negative pole of described the second diode, and another road is connected with the second end of described receiving coil.
Preferably, described Voltage stabilizing module comprises the 8th electric capacity, the 9th electric capacity, the tenth electric capacity, the 6th resistance, voltage-stabiliser tube and triode, wherein:
The collector electrode of described triode is connected with described the 8th electric capacity, and the base stage of described triode is connected with the negative pole of described voltage-stabiliser tube, and the emitter of described triode divides two-way, and a road is connected with described rechargeable battery, the 9th capacity earth described in another Lu Yujing; The negative pole of described voltage-stabiliser tube is connected with described the 6th resistance, the plus earth of described voltage-stabiliser tube; Described the 8th electric capacity one end is connected with the negative pole of voltage-stabiliser tube through described the 6th resistance, other end ground connection; Described the tenth electric capacity and described the 8th Capacitance parallel connection.
Preferably, described receiver is arranged in information safety devices.
The wireless charging system that the present invention proposes, comprise reflector and receiver, reflector comprises oscillator, amplifier and transmitting coil module, the AC signal that oscillator produces produces the AC signal of amplifying after amplifier amplifies, amplify AC signal flow through transmitting coil module produce frequency be the magnetic field of near-field communication frequency, under the effect of magnetic Field Coupling, receiving coil module produces alternating current, and alternating current is converted to direct voltage under the effect of rectification module and Voltage stabilizing module so that rechargeable battery is charged, the field frequency that transmitting coil module produces is near-field communication frequency, this magnetic field both can produce electromagnetic signal and miscellaneous equipment communicates, again can with receiver on coil interact so that rechargeable battery is charged, cost is lower, the electric current simultaneously producing after receiving coil module and the coupling of transmission coil module is less, is applicable to the electronic equipment of miniaturization, further, the coil of receiver is realized by PCB layout, and coiling separately, when reducing costs, is more convenient for reducing volume, is conducive to the Miniaturization Design of electronic equipment.
Accompanying drawing explanation
Fig. 1 is the structural representation of wireless charging system of the present invention;
Fig. 2 is the circuit diagram of the reflector in wireless charging system of the present invention;
Fig. 3 is the circuit diagram of the receiver in wireless charging system of the present invention.
Realization, functional characteristics and the advantage of the object of the invention, in connection with embodiment, are described further with reference to accompanying drawing.
Embodiment
Below in conjunction with drawings and the specific embodiments, with regard to technical scheme of the present invention, be described further.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
With reference to Fig. 1, Fig. 1 is the structural representation of wireless charging system preferred embodiment of the present invention.
The present embodiment proposes a kind of wireless charging system, comprises the reflector 10 being electrically connected with power supply and the receiver 20 being electrically connected with rechargeable battery, and described reflector 10 comprises oscillator 11, amplifier 12 and the transmitting coil module 13 of electrical connection successively; Described receiver 20 comprises receiving coil module 21, rectification module 22 and the Voltage stabilizing module 23 of electrical connection successively; The input of described oscillator 11 is connected with the output of power supply, and output is connected with the input of amplifier 12; Two outputs of described amplifier 12 respectively with the corresponding connection of two inputs of described transmitting coil module 13; Two outputs of described receiving coil module 21 respectively with the corresponding connection of two inputs of described rectification module 22; Two outputs of described rectification module 22 respectively with the corresponding connection of two inputs of described Voltage stabilizing module 23, the output of described Voltage stabilizing module 23 is connected with described rechargeable battery 30, wherein:
The ac voltage signal that described oscillator 11 produces is sent to transmitting coil module 13 after amplifier 12 amplifies, the frequency that described transmitting coil module 13 produces is the magnetic field of near-field communication frequency, under the effect in the magnetic field that described receiving coil module 21 produces in described transmitting coil module 13, generation current signal and after the rectifying and voltage-stabilizing effect of rectification module 22 and Voltage stabilizing module 23, convert direct current to, this direct current exports rechargeable battery 30 to rechargeable battery 30 is charged.
In the present embodiment, the calibration that transmitting coil module 13 produces is 13.56MHZ, because the frequency of common near-field communication electromagnetic signal is 13.56MHZ, transmitting coil module 13 produces the 13.56MHZ that magnetic field is set to, this transmitting coil module 13 both can be charged, can produce electromagnetic signal again and other device communicates.
In the present embodiment, receiver can be arranged at and need to carry out on the equipment of wireless charging, and this equipment is preferably the information safety devices that charging current is less in the present embodiment, as electronic signature device and dynamic token.
Further, described receiving coil module 21 comprises the receiving coil L2 between two inputs that are connected to described rectification module 22, and described receiving coil L2 is arranged on the circuit board at described receiver 20 places in the mode of PCB layout.
Receiving coil L2 is arranged in the mode of PCB layout on the circuit board at described receiver 20 places, coiling separately, when reducing costs, is more convenient for reducing volume, is conducive to the Miniaturization Design of electronic equipment.
Further, described receiver 20 also comprises the charging protecting module 24 being connected with described rechargeable battery 30, and described charging protecting module 24 produces cue for detection of rechargeable battery 30 electric weight and when rechargeable battery 30 electric weight are full of.This charging protecting module 24 can be after connected rechargeable battery 30 have charged, and produces cue (as light signal and voice signal etc.) to protect rechargeable battery 30, and saves energy.
The wireless charging system that the present invention proposes, comprise reflector 10 and receiver 20, reflector 10 comprises oscillator 11, amplifier 12 and transmitting coil module 13, the AC signal that oscillator 11 produces produces the AC signal of amplifying after amplifier 12 amplifies, the AC signal transmitting coil module 13 of flowing through of amplifying produces the magnetic field that frequency is near-field communication frequency, under the effect of magnetic Field Coupling, receiving coil module 21 produces alternating current, and alternating current is converted to direct current under the effect of rectification module 22 and Voltage stabilizing module 23 so that rechargeable battery 30 is charged, the field frequency that transmitting coil module 13 produces is near-field communication frequency, this magnetic field both can produce electromagnetic signal and miscellaneous equipment communicates, again can with receiver 20 on receiving coil module 21 interact that rechargeable battery 30 is charged, cost is lower, the electric current simultaneously producing after receiving coil module 21 and 13 couplings of transmission coil module is less, is applicable to the electronic equipment of miniaturization, further, the receiving coil L2 on receiver 20 realizes by PCB layout, and coiling separately, when reducing costs, is more convenient for reducing volume, is conducive to the Miniaturization Design of electronic equipment.
With reference to Fig. 2, Fig. 2 is the circuit diagram of the reflector 10 in wireless charging system of the present invention.
In the present embodiment, described oscillator 11 comprises the first capacitor C 1, the second capacitor C 2, crystal oscillator Y, the first resistance R 1, the second resistance R 2, the first inverter U1 and the second inverter U2, wherein:
The first end of described crystal oscillator Y is through described the first capacitor C 1 ground connection, and the second end is through described the second capacitor C 2 ground connection; The input of described the first inverter U1 is connected with the first end of described crystal oscillator Y, and the output of described the first inverter U1 is divided into two-way, and road first resistance R 1 is connected with the second end of crystal oscillator Y, and another road is connected with the input of the second inverter U2; The output of described the second inverter U2 is connected with described amplifier 12; Described second resistance R 2 one end are connected with the input of described the first inverter U1, and the other end is connected with the second end of described crystal oscillator Y.
Power supply signal produces square-wave signal under the effect of crystal oscillator Y, and the first inverter U1 of series connection and the second inverter U2 carry out forming compared with the square-wave signal of standard after shaping to square-wave signal.
In the present embodiment, described amplifier 12 comprises the 3rd inverter U3, the 4th inverter U4, the 5th inverter U5, the 3rd resistance R 3, the 4th resistance R 4 and metal-oxide-semiconductor Q1, wherein:
The input of described the 3rd inverter U3 is connected with the output of the second inverter U2, and output is connected with the grid of described metal-oxide-semiconductor Q1; Described the 3rd inverter U3, the 4th inverter U4 and the 5th inverter U5 parallel connection; The drain electrode of described metal-oxide-semiconductor Q1 is connected with the grid of described metal-oxide-semiconductor Q1 through described the 3rd resistance R 3, the grid of described metal-oxide-semiconductor Q1 is through described the 4th resistance R 4 ground connection, the source ground of described metal-oxide-semiconductor Q1, described the 3rd capacitor C 3 one end, one end of described variable capacitance C5, one end of described the 5th resistance R 5, one end of described the 4th capacitor C 4 and the first input end of described transmitting coil module 13 are interconnected between two; The other end of described the 3rd capacitor C 3 divides two-way, and a road is connected with the drain electrode of described metal-oxide-semiconductor Q1, and another road is connected with the second input of described transmitting coil module; The other end of described variable capacitance C5 is connected with the second input of described transmitting coil module 13, and the other end of described the 5th resistance C5 is connected with power input Vcc, the other end ground connection of described the 4th capacitor C 4.
Described transmitting coil module 13 comprises transmitting coil L1, and described transmitting coil L1 is in parallel with described variable capacitance C4.
In the present embodiment, on circuit board in transmitting coil L1 coiling and reflector 10, need not be according to standard coiling, reduce costs, and antenna can be revised according to demand, arrange flexibly, the coil of coiling need not be set separately, be beneficial to the Miniaturization Design of reflector 10, and reflector 10 is easy to carry.
The signal of the 3rd inverter U3, the 4th inverter U4 and the 5th inverter U5 input is square-wave signal, has high-voltage signal also to have low-voltage signal; When the signal of the 3rd inverter U3, the 4th inverter U4 and the 5th inverter U5 input is high-voltage signal, by the inverting function output low-voltage signal of the 3rd inverter U3, the 4th inverter U4 and the 5th inverter U5, now because the grid of metal-oxide-semiconductor Q1 is low-voltage, metal-oxide-semiconductor Q1 cut-off, described the 3rd capacitor C 3 is discharged, transmitting coil L1 energy storage, produces magnetic field; And when the signal of the 3rd inverter U3, the 4th inverter U4 and the 5th inverter U5 input is low-voltage signal, by the inverting function output high-voltage signal of the 3rd inverter U3, the 4th inverter U4 and the 5th inverter U5, now because the grid of metal-oxide-semiconductor Q1 is high voltage, metal-oxide-semiconductor Q1 conducting, described the 3rd capacitor C 3 is charged, transmitting coil L1 produces magnetic field equally, to guarantee that transmitting coil L1 produces stable magnetic field.
With reference to Fig. 3, Fig. 3 is the circuit diagram of the receiver 20 in wireless charging system of the present invention.
Described receiving coil module 21 also comprises the 5th capacitor C 5, the 6th capacitor C 6 and the 7th capacitor C 7, wherein:
Two-way is divided in described the 5th capacitor C 5 one end, and a road is connected with the first end of described receiving coil L2, and another Lu Jing six capacitor C 6 are connected with the second end of described receiving coil L2, and described the 5th capacitor C 5 other ends are connected with the first input end of described rectification module 22; Described the 7th capacitor C 7 one end are connected with the second end of described receiving coil L2, and the other end is connected with the second input of described rectification module; The second end of described receiving coil L2 is connected with described rectification module 22.
Described rectification module 22 comprises the first diode D1, the second diode D2, the 3rd diode D3 and the 4th diode, wherein:
The positive pole of described the first diode D1 divides two-way, and a road is connected with described Voltage stabilizing module 23, and another road is connected with described the second diode D2, and the negative pole of described the first diode D1 is connected with the positive pole of described the 3rd diode; The positive pole of described the 3rd diode D3 is connected with the first end of described receiving coil L2 through described the 5th capacitor C 5, and the negative pole of described the 3rd diode D3 is connected with described Voltage stabilizing module 23; The negative pole of described the 4th diode D4 is connected with the negative pole of described the 3rd diode D3, and the positive pole of described the 4th diode D4 divides two-way, and a road is connected with the negative pole of described the second diode D2, and another road is connected with the second end of described receiving coil L2.
Described Voltage stabilizing module 23 comprises the 8th capacitor C 8, the 9th capacitor C 9, the tenth capacitor C 10, the 6th resistance R 6, voltage-stabiliser tube D5 and triode Q2, wherein:
The collector electrode of described triode Q2 is connected with described the 8th capacitor C 8, the base stage of described triode Q2 is connected with the negative pole of described voltage-stabiliser tube D5, the emitter of described triode Q2 divides two-way, and a road is connected with described rechargeable battery 30, the 9th capacitor C 9 ground connection described in another Lu Yujing; The negative pole of described voltage-stabiliser tube D5 is connected with described the 6th resistance R 6, the plus earth of described voltage-stabiliser tube D5; Described the 8th capacitor C 8 one end are connected with the negative pole of voltage-stabiliser tube D5 through described the 6th resistance R 6, other end ground connection; Described the tenth capacitor C 10 is in parallel with described the 8th capacitor C 8.
Under the coupling in the magnetic field that receiving coil L2 produces at transmitting coil L1, produce alternating current, this alternating current the 5th capacitor C 5, the 6th capacitor C 6 and the 7th capacitor C 7 are carried out after shaping, by the first diode D1, the second diode D2, the rectified action of the 3rd diode D3 and the 4th diode forms direct current, this direct current stabilizes to the base voltage of triode the voltage of voltage-stabiliser tube D5 after the pressure stabilization function of voltage-stabiliser tube D5, the for example burning voltage of voltage-stabiliser tube D5 is 5V, the base voltage of triode Q2 corresponds to 5V, to maintain the real-time conduction of triode Q2.
The foregoing is only the preferred embodiments of the present invention; not thereby limit the scope of the claims of the present invention; every equivalent structure transformation that utilizes specification of the present invention and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. a wireless charging system, comprises the reflector being electrically connected with power supply and the receiver being electrically connected with rechargeable battery, it is characterized in that, described reflector comprises oscillator, amplifier and the transmitting coil module of electrical connection successively; Described receiver comprises receiving coil module, rectification module and the Voltage stabilizing module of electrical connection successively; The input of described oscillator is connected with the output of power supply, and output is connected with the input of amplifier; Two outputs of described amplifier respectively with the corresponding connection of two inputs of described transmitting coil module; Two outputs of described receiving coil module respectively with the corresponding connection of two inputs of described rectification module, two outputs of described rectification module respectively with the corresponding connection of two inputs of described Voltage stabilizing module, the output of described Voltage stabilizing module is connected with described rechargeable battery, wherein:
The AC signal that described oscillator produces is sent to transmitting coil module after amplifier amplifies, it is the magnetic field of near-field communication frequency that described transmitting coil module produces frequency, under the effect in the magnetic field that described receiving coil module produces in described transmitting coil module, generation current signal and after the rectifying and voltage-stabilizing effect of rectification module and Voltage stabilizing module, convert direct current signal to, this DC signal output to rechargeable battery charges to rechargeable battery.
2. system according to claim 1, it is characterized in that, described receiving coil module comprises the receiving coil between two inputs that are connected to described rectification module, and described receiving coil is arranged on the circuit board at described receiver place in the mode of PCB layout.
3. system according to claim 1, is characterized in that, described receiver also comprises the charging protecting module being connected with described rechargeable battery, and described charging protecting module produces cue for detection of battery electric quantity and when battery electric quantity is full of.
4. system according to claim 1, is characterized in that, described oscillator comprises the first electric capacity, the second electric capacity, crystal oscillator, the first resistance, the second resistance, the first inverter and the second inverter, wherein:
The first end of described crystal oscillator is through described the first capacity earth, and the second end is through described the second capacity earth; The input of described the first inverter is connected with the first end of described crystal oscillator, and the output of described the first inverter is divided into two-way, and road first resistance is connected with the second end of crystal oscillator, and another road is connected with the input of the second inverter; The output of described the second inverter is connected with described amplifier; Described second resistance one end is connected with the input of described the first inverter, and the other end is connected with the second end of described crystal oscillator.
5. system according to claim 3, it is characterized in that, described amplifier comprises the 3rd inverter, the 4th inverter, the 5th inverter, the 3rd resistance, the 4th resistance, metal-oxide-semiconductor, the 3rd electric capacity, the 4th electric capacity, variable capacitance and the 5th resistance, wherein:
The input of described the 3rd inverter is connected with the output of the second inverter, and output is connected with the grid of described metal-oxide-semiconductor; Described the 3rd inverter, the 4th inverter and the 5th inverter parallel connection; The drain electrode of described metal-oxide-semiconductor is connected with the grid of described metal-oxide-semiconductor through described the 3rd resistance, and the grid of described metal-oxide-semiconductor is through described the 4th grounding through resistance, the source ground of described metal-oxide-semiconductor; The first input end of described the 3rd electric capacity one end, one end of described variable capacitance, one end of described the 5th resistance, one end of described the 4th electric capacity, described transmitting coil module is interconnected between two; The other end of described the 3rd electric capacity divides two-way, and a road is connected with the drain electrode of described metal-oxide-semiconductor, a road and described transmitting coil module the second input be connected; The other end of described variable capacitance and described transmitting coil module the second input be connected; The other end of described the 5th resistance is connected with power input; The other end ground connection of described the 4th electric capacity.
6. system according to claim 4, is characterized in that, described transmitting coil module comprises transmitting coil, and described transmitting coil is in parallel with described variable capacitance.
7. system according to claim 2, is characterized in that, described receiving coil module also comprises the 5th electric capacity, the 6th electric capacity, the 7th electric capacity, wherein:
Two-way is divided in described the 5th electric capacity one end, and a road is connected with the first end of described receiving coil, and another Lu Jing six electric capacity are connected with the second end of described receiving coil, and described the 5th electric capacity other end is connected with the first input end of described rectification module; Described the 7th electric capacity one end is connected with the second end of described receiving coil, and the other end is connected with the second input of described rectification module.
8. system according to claim 7, is characterized in that, described rectification module comprises the first diode, the second diode, the 3rd diode and the 4th diode, wherein:
The positive pole of described the first diode divides two-way, and a road is connected with the first input end of described Voltage stabilizing module, and another road is connected with the positive pole of described the second diode, and the negative pole of described the first diode is connected with the positive pole of described the 3rd diode; The positive pole of described the 3rd diode is connected with the first end of described receiving coil through described the 5th electric capacity, and the negative pole of described the 3rd diode is connected with the second input of described Voltage stabilizing module; The negative pole of described the 4th diode is connected with the negative pole of described the 3rd diode, and the positive pole of described the 4th diode divides two-way, and a road is connected with the negative pole of described the second diode, and another road is connected with the second end of described receiving coil.
9. Voltage stabilizing module according to claim 8, is characterized in that, described Voltage stabilizing module comprises the 8th electric capacity, the 9th electric capacity, the tenth electric capacity, the 6th resistance, voltage-stabiliser tube and triode, wherein:
The collector electrode of described triode is connected with described the 8th electric capacity, and the base stage of described triode is connected with the negative pole of described voltage-stabiliser tube, and the emitter of described triode divides two-way, and a road is connected with described rechargeable battery, the 9th capacity earth described in another Lu Yujing; The negative pole of described voltage-stabiliser tube is connected with described the 6th resistance, the plus earth of described voltage-stabiliser tube; Described the 8th electric capacity one end is connected with the negative pole of voltage-stabiliser tube through described the 6th resistance, other end ground connection; Described the tenth electric capacity and described the 8th Capacitance parallel connection.
10. system according to claim 1, is characterized in that, described receiver is arranged in information safety devices.
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| CN109635604B (en) * | 2019-01-17 | 2023-12-26 | 深圳和而泰智能控制股份有限公司 | Near field identification circuit and system |
| CN110336387A (en) * | 2019-05-24 | 2019-10-15 | 深圳华大北斗科技有限公司 | Wireless headset charging reception system and wireless charging send system |
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