CN208094217U - A kind of wireless charger - Google Patents
A kind of wireless charger Download PDFInfo
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- CN208094217U CN208094217U CN201820232398.5U CN201820232398U CN208094217U CN 208094217 U CN208094217 U CN 208094217U CN 201820232398 U CN201820232398 U CN 201820232398U CN 208094217 U CN208094217 U CN 208094217U
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Abstract
The utility model is related to wireless charging field, more particularly to a kind of wireless charger.The wireless charger includes power module, control circuit, full bridge driving circuit, power switch circuit and coil circuit, control circuit, full bridge driving circuit, power switch circuit and coil circuit are electrically connected in series successively, control circuit and power module are electrically connected, control circuit sends control signal to full bridge driving circuit, full bridge driving circuit is according to control signal output drive signal to power switch circuit, power switch circuit exports the resonance signal of one group of reverse complemental according to drive signal, coil circuit exports energy with electronic device wireless charging according to resonance signal.The wireless charging of the utility model goes have the advantages that charging effect is good.
Description
【Technical field】
The utility model is related to wireless charging field, more particularly to a kind of wireless charger.
【Background technology】
With the development of society, the improvement of people's living standards, portable electronic equipment type is more and more, such as hand
Machine, computer, tablet, mp4 etc..People to electronic equipment require it is higher and higher, such as require electronic equipment can by wireless charging, and
Existing wireless charger charging effect is bad, cannot meet the needs of people.
Therefore, a kind of wireless charger that charging effect is good how is provided, just at the demand of wireless charging field！
【Utility model content】
For the bad technical problem of the wireless charger charging effect overcome, the utility model provides a kind of charging effect
Good wireless charger.
The scheme that the utility model solves technical problem is to provide a kind of wireless charger, and it is wireless to be used for electron equipment
Charging, the wireless charger include power module, control circuit, full bridge driving circuit, power switch circuit and coil circuit, control
Circuit, full bridge driving circuit, power switch circuit and coil circuit processed are electrically connected in series successively, control circuit and power module
It is electrically connected, control circuit sends control signal to full bridge driving circuit, and full bridge driving circuit is according to control signal output driving
For signal to power switch circuit, power switch circuit exports the resonance signal of one group of reverse complemental, coil electricity according to drive signal
Road exports energy with electronic device wireless charging according to resonance signal.
Preferably, the full bridge driving circuit includes two half-bridge drive circuits, and two groups of half-bridge drive circuits are all same respectively
When and control circuit, power switch circuit, power module be electrically connected, control circuit send control signal to half-bridge driven electricity
Road, the control signal level reverse complemental that two half-bridge drive circuits receive.
Preferably, the full bridge driving circuit include mos pipe Q2, mos pipe Q5, mos pipe Q8, mos pipes Q11, triode Q1,
Triode Q3, triode Q4, triode Q6, triode Q7, triode Q9, triode Q10, triode Q12, resistance R1, resistance
R3, resistance R5, resistance R6, resistance R9, resistance R11, the grid and control circuit of resistance R13 and resistance R14, mos pipe Q2 are electrical
Connection is electrically connected after the first end of resistance R1, the collector of triode Q1 are electrically in parallel with power module, the second of resistance R1
First end of the end simultaneously with the drain electrode of mos pipes Q2, resistance R3 is electrically connected, the second end of resistance R3 while and triode Q1, three
The base stage of pole pipe Q3 is electrically connected, and after the emitter parallel connection of the emitter, triode Q3 of triode Q1 and power switch circuit is electric
Property connection, be grounded after the source electrode of mos pipes Q2, the collector of triode Q3 are electrically in parallel, grid and the control circuit electricity of mos pipes Q5
Property connection, be electrically connected with power module after the first end of resistance R5, the collector of triode Q4 are electrically in parallel, the of resistance R5
Two ends are electrically connected with the first end of the drain electrode of mos pipes Q5, resistance R6 simultaneously, the second end of resistance R6 while and triode Q4,
The base stage of triode Q6 is electrically connected, after the emitter parallel connection of the emitter, triode Q6 of triode Q4 and power switch circuit
It is electrically connected, is grounded after the source electrode of mos pipes Q5, the collector of triode Q6 are electrically in parallel；The grid and control circuit of mos pipes Q8
It is electrically connected, is electrically connected with power module after the first end of resistance R9, the collector of triode Q7 are electrically in parallel, resistance R9's
First end of the second end simultaneously with the drain electrode of mos pipes Q8, resistance R11 is electrically connected, the second end of resistance R11 while and triode
The base stage electric connection of Q7, triode Q9, after the emitter parallel connection of the emitter, triode Q9 of triode Q7 and power switch is electric
Road is electrically connected, and is grounded after the source electrode of mos pipes Q8, the collector of triode Q9 are electrically in parallel；The grid of mos pipes Q11 and control
Circuit is electrically connected, and is electrically connected with power module after the first end of resistance R13, the collector of triode Q10 are electrically in parallel, electricity
It hinders the second end of R13 to be electrically connected with the first end of the drain electrode of mos pipes Q11, resistance R14 simultaneously, the second end of resistance R14 is simultaneously
It is electrically connected with the base stage of triode Q10, triode Q12, after the emitter parallel connection of the emitter, triode Q12 of triode Q10
It is electrically connected with power switch circuit, is grounded after the source electrode of mos pipes Q11, the collector of triode Q12 are electrically in parallel.
Preferably, mos pipes Q2, mos pipe Q5, mos pipe Q8, mos pipe Q11 is N-type mos pipes, triode Q1, three poles
Pipe Q4, triode Q7, triode Q10 are NPN type triode, and triode Q3, triode Q6, triode Q9, triode Q12 are
For PNP type triode.
Preferably, the full bridge driving circuit further includes resistance R2, resistance R4, resistance R7, resistance R8, resistance R10, resistance
R12, resistance R15 and resistance R16, resistance R4 first ends and control circuit are electrically connected, resistance R4 second ends while and mos pipes Q2
Grid, resistance R2 first end be electrically connected, resistance R2 second ends and power module are electrically connected；Resistance R7 first ends and control
Circuit processed is electrically connected, and resistance R7 second ends are electrically connected with the first end of the grid of mos pipes Q5, resistance R8 simultaneously, resistance R8
The source electrode of second end and mos pipes Q5 are electrically connected；Resistance R12 first ends and control circuit are electrically connected, and resistance R12 second ends are same
When and the first end of the grid of mos pipes Q8, resistance R10 be electrically connected, resistance R10 second ends and power module are electrically connected；Electricity
R15 first ends and control circuit is hindered to be electrically connected, resistance R15 second ends simultaneously and the grid of mos pipes Q11, resistance R16 first
End is electrically connected, and the source electrode of resistance R16 second ends and mos pipes Q11 are electrically connected.
Preferably, the power switch circuit includes mos pipes Q13A, mos pipe Q14A, mos pipe Q13B, mos pipe Q14B, electricity
Hinder R44, resistance R45, resistance R46, resistance R47, resistance R48, capacitance C22, capacitance C23, capacitance C46 and capacitance C47, resistance
The first end of R44 is electrically connected with the emitter of triode Q4, triode Q6 simultaneously, the second end and mos pipes Q13A of resistance R44
Grid be electrically connected, the first end of resistance R45 simultaneously and the electric connection of the emitter of mos pipe Q1, mos pipes Q3, resistance R45's
The grid of second end and mos pipes Q14A are electrical, the source electrode of mos pipes Q13A while and capacitance C22, the first end of capacitance C23, power supply
Module is electrically connected, capacitance C22, capacitance C23 second end it is electrically in parallel after simultaneously and source electrode, the current feedback of mos pipes Q14A
Circuit is electrically connected, and is electrically connected with coil circuit after the drain electrode of mos pipes Q13A and the drain electrode parallel connection of mos pipes Q14A, resistance R46
First end simultaneously and triode Q10, triode Q12 emitter electric connection, the second end and mos pipes Q13B of resistance R46
Grid be electrically connected, the first end of resistance R47 simultaneously and the electric connection of the emitter of mos pipe Q7, mos pipes Q, resistance R47's
The grid of second end and mos pipes Q14B are electrically connected, the source electrode of mos pipes Q13B simultaneously and capacitance C26, capacitance C27 first end,
Power module is electrically connected, capacitance C26, capacitance C27 second end it is electrically in parallel after simultaneously and source electrode, the electric current of mos pipes Q14B
Feedback circuit is electrically connected, capacitance C26, capacitance C27 second end it is electrically in parallel after be also grounded by resistance R48, mos pipes Q13B
Drain electrode and mos pipes Q14B drain electrode parallel connection after and coil circuit be electrically connected.
Preferably, the mos pipes Q13A and mos pipe Q13B is p-type mos pipes, the mos pipes Q14A and mos pipe Q14B
All it is N-type mos pipes.
Preferably, the coil circuit includes inductance L1, capacitance C16, capacitance C17, capacitance C20 and capacitance C21, inductance L1
First end be electrically connected simultaneously with the drain electrode of mos pipe Q13A, mos pipes Q14A, the second end of inductance L1 while and capacitance C16,
Capacitance C17, capacitance C20, capacitance C21 first end be electrically connected, capacitance C16, capacitance C17, capacitance C20, capacitance C21 second
It is electrically connected simultaneously with the drain electrode of mos pipe Q13B, mos pipes Q14B after end is in parallel.
Preferably, the wireless charger further includes voltage feedback circuit, current feedback circuit, the voltage feedback circuit
It is connected simultaneously with coil circuit, control circuit, the current feedback circuit while and power switch circuit, power module, control
Circuit is electrically connected.
Preferably, the wireless charger further includes indicating circuit, and the indicating circuit and control circuit are electrically connected, institute
Indicating circuit is lighted or is flickered when stating coil circuit work.
Compared with prior art, the wireless charger of the utility model includes power module, control circuit, full-bridge driving electricity
Road, power switch circuit and coil circuit, control circuit, full bridge driving circuit, power switch circuit and coil circuit are electric successively
Property be connected in series with, control circuit and power module are electrically connected, and control circuit sends control signal to full bridge driving circuit, full-bridge
For driving circuit according to control signal output drive signal to power switch circuit, power switch circuit exports one according to drive signal
The resonance signal of group reverse complemental, coil circuit export energy with electronic device wireless charging, charging effect according to resonance signal
Fruit is good, and charge efficiency is high, meets the demand of user.
The full bridge driving circuit of the utility model further includes resistance R2, resistance R4, resistance R7, resistance R8, resistance R10, electricity
R12, resistance R15 and resistance R16 are hindered, resistance R4 first ends and control circuit are electrically connected, and resistance R4 second ends are managed with mos simultaneously
The grid of Q2, the first end of resistance R2 are electrically connected, and resistance R2 second ends and power module are electrically connected；Resistance R7 first ends and
Control circuit is electrically connected, and resistance R7 second ends are electrically connected with the first end of the grid of mos pipes Q5, resistance R8 simultaneously, resistance
The source electrode of R8 second ends and mos pipes Q5 are electrically connected；Resistance R12 first ends and control circuit are electrically connected, resistance R12 second ends
It is electrically connected simultaneously with the first end of the grid of mos pipes Q8, resistance R10, resistance R10 second ends and power module are electrically connected；
Resistance R15 first ends and control circuit are electrically connected, resistance R15 second ends simultaneously and the grid of mos pipes Q11, resistance R16 the
One end is electrically connected, and the source electrode of resistance R16 second ends and mos pipes Q11 are electrically connected, resistance R4, resistance R7, resistance R12 and electricity
The actuating speed for hindering R15 control full bridge driving circuits, prevents the capacitive character of mos pipe Q2, mos pipe Q5, mos pipe Q8, mos pipes Q11
It is overcharged caused by charge, charge less interference control circuit.
The wireless charger of the utility model further includes voltage feedback circuit, current feedback circuit, the Voltage Feedback electricity
Road is connected with coil circuit, control circuit simultaneously, the current feedback circuit while and power switch circuit, power module, control
Circuit processed is electrically connected, and voltage feedback circuit and current feedback circuit can the voltage coil circuit output, current feedbacks in time
To control circuit, for control circuit with the output of control coil circuit, wireless charging effect is good.
【Description of the drawings】
Fig. 1 is the circuit modular structure schematic diagram of the utility model wireless charger.
Fig. 2A is the part physical circuit figure of the power module of the utility model wireless charger.
Fig. 2 B are the physical circuit figures of another part of the power module of the utility model wireless charger.
Fig. 3 is the specific schematic diagram of the control circuit of the utility model.
Fig. 4 A are the physical circuit figures of the conciliation of the utility model and the identification circuit of shaking hands of communication processing circuit.
Fig. 4 B are the physical circuit figures of the conciliation of the utility model and the current feedback circuit of communication processing circuit.
Fig. 4 C are the physical circuit figures of the conciliation of the utility model and the voltage feedback circuit of communication processing circuit.
Fig. 5 A are the physical circuit figures of the first gate drive circuit of the driving circuit of the utility model.
Fig. 5 B are the physical circuit figures of the second gate drive circuit of the driving circuit of the utility model.
Fig. 5 C are the physical circuit figures of the third gate drive circuit of the driving circuit of the utility model.
Fig. 5 D are the physical circuit figures of the 4th gate drive circuit of the driving circuit of the utility model.
Fig. 6 is the physical circuit figure of the power switch circuit of the utility model.
Fig. 7 is the physical circuit figure of the coil circuit of the utility model.
Fig. 8 is the physical circuit figure of the indicating circuit of the utility model.
Fig. 9 is the schematic diagram for the pulse signal low and high level that the driving circuit of the utility model is output and input.
【Specific implementation mode】
In order to make the purpose of this utility model, technical solution and advantage be more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to solve
The utility model is released, is not used to limit the utility model.
Referring to Fig. 1, the present invention provides a kind of wireless charger 10, it to be used for electron equipment wireless charging.Electronics is set
Standby including but not limited to mobile phone, tablet, laptop computer, smart camera, smartwatch.Wireless charger 10 includes power module
11, control circuit 12, conciliation and communication processing circuit 13, driving circuit 14, power switch circuit 15, coil circuit 16 and instruction
Circuit 17.Control circuit 12, driving circuit 14, power switch circuit 15 and coil circuit 16 are electrically connected in series successively；Power supply
Module 11, indicating circuit 17 are also electrically connected with control circuit 12, and power module 11 in order to control power by circuit 13 and other circuits,
It reconciles and is electrically connected simultaneously with control circuit 12, power switch circuit 15 and coil circuit 16 with communication processing circuit 13.Control
Circuit 12 sends control signal to driving circuit 14, and driving circuit 14 gives power switch electricity according to control signal output drive signal
Road 15, power switch circuit 15 is according to drive signal export resonance signal to coil circuit, and coil circuit 16 is according to resonance signal
Energy is exported for wireless charging.Control circuit 12 is shaken hands identification by reconciling with communication processing circuit 13 and electronic equipment.It adjusts
Solution also senses the electric current and voltage of coil circuit 16 and power switch circuit 15, conciliation and communication process with communication processing circuit 13
Circuit 13 is controlled generating a processing signal after electric current and the voltage processing of sensing and processing signal being sent to control circuit 12
Circuit 12 sends suitable control signal to driving circuit 14, to form closed control circuit, coil also according to processing signal
16 emitted energy effect of circuit is good, improves wireless charging efficiency.
Also referring to Fig. 2A and Fig. 2 B, power module 11 is powered for 10 each circuit of wireless charger, power module 11
It can be that rechargeable battery or non-rechargeable battery provide electric energy, can also be that external power supply provides electric energy.Such as pass through usb interfaces
It is introduced from outside into electric energy.In the present embodiment, power module 11 is introduced from outside into electric energy.Specifically, power module 11 includes
USB1 interfaces, capacitance C8, capacitance C9, capacitance C10, capacitance C11, capacitance C18, capacitance C19, resistance R36, resistance R37, resistance
R38, resistance R39, resistance R40, resistance R41, resistance R42, diode D3 and voltage conversion unit U2.
USB1 interfaces include No. 1 pin (C+ pins), No. 2 pins (D- pins), No. 3 pins (D+ pins), No. 5 pins
(GND pin) and No. 0 pin.No. 5 pins and No. 0 pin are grounded after being electrically connected.Capacitance C8, capacitance C9, capacitance C10, capacitance
The first end of C11 is all connected with C+ pins, capacitance C8, capacitance C9, capacitance C10, capacitance C11 second end be all grounded.Resistance R36
First end and C+ pins be electrically connected, the second end of resistance R36 is simultaneously and the first end of voltage conversion unit U2, capacitance C18
It is electrically connected, the second end ground connection of capacitance C18.
Voltage conversion unit U2 includes No. 1 pin (GND) as ground terminal, No. 2 pins (Vout) as output end
With No. 3 pins (Vin) as input terminal.The input terminal of voltage conversion unit U2 and the second end of resistance R36 and capacitance C18
First end be electrically connected, the ground terminal of voltage conversion unit U2 ground connection, the output end of voltage conversion unit U2 passes through capacitance C19
Ground connection, the output end of voltage conversion unit U2 are also electrically connected with the first end of resistance R37, the second end of resistance R37 simultaneously and
The first end electric connection of the first end of resistance R38, the anode of diode D3, resistance R39.The second end and USB1 of resistance R38
No. 3 pins be electrically connected, the second end of resistance R39 ground connection, the cathode of diode D3 is simultaneously and control circuit 12, resistance R40
First end be electrically connected.The second end of resistance R40 is grounded by resistance R41, and the second end of resistance R40 also passes through resistance R42
It is electrically connected with No. 2 pins of USB1.The circuit structure of power module 11 realizes voltage conversion, and filtered voltage stabilizing, defeated
The voltage stabilization gone out.The voltage of the output end output of voltage conversion unit U2 is 3.3V.
Referring to Fig. 3, the work operation of each circuit is coordinated in the control of control circuit 12.Control circuit 12 includes control chip
U1, control chip U1 includes following pin：
The ends BEEP (No. 1 pin)：The ends BEEP are for exporting high-voltage signal.The diode D3 at the ends BEEP and power module 11
Cathode be electrically connected.When the ends BEEP export high-voltage signal, the output end for controlling the voltage conversion unit U2 of power module 11 is defeated
Go out the voltage of 9V.
The ends DECODE (No. 15 pins)：The ends DECODE are used to detect the first feedback letter reconciled with communication processing circuit 13
Number, to shake hands identification with electronic equipment.The ends DECODE and conciliation are electrically connected with communication processing circuit 13.
The ends I_DC (No. 2 pins)：The ends I_DC are used to detect the second feedback signal reconciled with communication processing circuit 13, with
Identify the output current of 16 electron equipment charge of coil circuit.The ends I_DC and conciliation electrically connect with communication processing circuit 13
It connects.
The ends V_P-P (No. 20 pins)：The ends V_P-P are used to detect the third feedback letter reconciled with communication processing circuit 13
Number, to identify the output voltage of 16 electron equipment charge of coil circuit.The ends V_P-P and conciliation and 13 electricity of communication processing circuit
Property connection.
The ends H2 (No. 17 pins)：The ends H2 are for output pulse signal to driving circuit 14.14 electricity of the ends H2 and driving circuit
Property connection.
The ends L2 (No. 14 pins)：The ends L2 are for output pulse signal to driving circuit 14.14 electricity of the ends L2 and driving circuit
Property connection.
The ends L1 (No. 16 pins)：The ends L1 are for output pulse signal to driving circuit 14.14 electricity of the ends L1 and driving circuit
Property connection.
The ends H1 (No. 13 pins)：The ends H1 are for output pulse signal to driving circuit 14.14 electricity of the ends H1 and driving circuit
Property connection.
The ends LED_Start (No. 11 pins)：The ends LED_Start are for exporting indication signal to indicating circuit 17, with control
Indicating circuit 17 processed works.The ends LED_Start and indicating circuit 17 are electrically connected.
Also referring to Fig. 4 A, Fig. 4 B and Fig. 4 C, it includes current feedback circuit 132, electricity to reconcile with communication processing circuit 13
Pressure feedback circuit 133 and identification circuit 131 of shaking hands, current feedback circuit 132 while and power module 11, control circuit 12 and work(
Rate switching circuit 15 connects；Voltage feedback circuit 133 is electrically connected with coil circuit 16, control circuit 12 simultaneously, identification of shaking hands
Circuit 131 is electrically connected with coil circuit 16, power module 11, control circuit 12 simultaneously.
Specifically, please continue to refer to Fig. 4 A, identification circuit 131 of shaking hands includes resistance R17, resistance R18, resistance R19, resistance
R20, resistance R21, resistance R22, resistance R23, resistance R24, resistance R25, resistance R26, resistance R27, capacitance C1, capacitance C2, electricity
Hold C3, capacitance C4, capacitance C5, capacitance C6, capacitance C7, amplifier U1A, amplifier U1B and diode D1.The first of resistance R19
End and coil circuit 16 are electrically connected, and the second end of resistance R19 and the anode of diode D1 are electrically connected, the cathode of diode D1
It is electrically connected simultaneously with the first end of capacitance C3, the first end of resistance R23, the first end of resistance R20, the second end of capacitance C3,
The second end of resistance R23 is all grounded, and the second end of resistance R20 is grounded by capacitance C4, the second end of resistance R20 also with capacitance C2
First end be electrically connected, the second end of capacitance C2 is grounded by resistance R24, and the second end of capacitance C2 and amplifier U1A's is same
It being electrically connected to the first end of input terminal, resistance R17, the second end of resistance R17 is grounded by capacitance C1, and the second of resistance R17
End is also electrically connected with the output end of voltage conversion unit U2, and the reverse input end of amplifier U1A passes sequentially through resistance R26, electricity
Hold C7 ground connection, the positive power source terminal of amplifier U1A and the output end of voltage conversion unit U2 are electrically connected, the negative electricity of amplifier U1A
Source is grounded, and the output end of amplifier U1A is electrically connected by the reverse input end of resistance R27 and amplifier U1A, amplifier
The output end of U1A is also electrically connected with the first end of resistance R21, and the second end of resistance R21 is grounded by capacitance C5, resistance R21
Second end be also electrically connected with the first end of resistance R22, the first end of resistance R25, the second end of resistance R22 is simultaneously and amplification
The noninverting input of device U1B, the first end of resistance R18 be electrically connected, and the second end of resistance R18 is simultaneously and control circuit 12
The output end electric connection at the ends DECODE, amplifier U1B, the second end of resistance R25 and the reverse input end of amplifier U1B are electrical
Connection, the reverse input end of amplifier U1B are also grounded by capacitance C6.The identification circuit 131 of shaking hands by coil and is electrically charged
Electronic equipment is shaken hands identification, and sends DECODE end of first feedback signal to control chip U1.
Specifically, please refer to Fig. 4 B, current feedback circuit 132 include resistance R28, resistance R30, resistance R33, resistance R34,
Resistance R35, capacitance C14, capacitance C15 and amplifier U1C.The first end and C+ pins of resistance R28 is electrically connected, resistance R28's
Second end simultaneously and the first end of resistance R30, the in-phase input end of amplifier U1C, capacitance C14 first end be electrically connected, it is electric
The second end and power switch circuit 15 for hindering R30 are electrically connected, the second end ground connection of capacitance C14, the reversed input of amplifier U1C
End is grounded by resistance R34, and the output end of amplifier U1C is electrically connected by the reverse input end of resistance R35 and amplifier U1C
It connects, the output end of amplifier U1C is also electrically connected with the first end of resistance R33, and the second end of resistance R33 is connect by capacitance C15
The second end on ground, resistance R33 is also electrically connected with the ends I_DC of control circuit 12.Current feedback circuit 132 passes through power switch
The output current of the sensing sensing coil circuit 16 of circuit 15, and send I_DC end of second feedback signal to control chip U1.
Please continue to refer to Fig. 4 C, voltage feedback circuit 133 includes resistance R29, resistance R31, resistance R32, capacitance C12, electricity
Hold C13 and diode D2.The first end and coil circuit 16 of capacitance C12 is electrically connected, the second end and resistance R29 of capacitance C12
First end be electrically connected, the second end of resistance R29 is grounded by resistance R31, and the second end of resistance R29 is also with diode D2's
Anode is electrically connected, and the cathode of diode D2 is respectively by resistance R32 and capacitance C13 ground connection, and the cathode of diode D2 is also and control
The ends V_P-P of coremaking piece U1 are electrically connected.The output voltage of the sensing sensing coil circuit 16 of voltage feedback circuit 133, and send
V_P-P end of the third feedback signal to control chip U1.
Also referring to Fig. 5 A, Fig. 5 B, Fig. 5 C and Fig. 5 D, driving circuit 14 is a full bridge driving circuit, driving circuit 14
Including two half-bridge drive circuits, two half-bridge drive circuits are all respectively simultaneously and control circuit 12, power switch circuit 15, electric
Source module 11 is electrically connected, and control circuit 12 sends control signal to half-bridge drive circuit, and two half-bridge drive circuits receive
Control signal level reverse complemental.Each half-bridge drive circuit includes two gate drive circuits, i.e. driving circuit 14 includes
Four gate drive circuits, respectively the first gate drive circuit 141, the second gate drive circuit 142, third gate-drive electricity
Road 143 and the 4th gate drive circuit 144.Each gate drive circuit includes that a mos is managed, two triodes and two electricity
Resistance.Specifically, the first gate drive circuit 141 includes mos pipes Q2, triode Q1, triode Q3, resistance R1 and resistance R3, mos
The ends H1 of the grid of pipe Q2 and the control chip U1 of control circuit 12 are electrically connected, the first end of resistance R1, the collection of triode Q1
Be electrically connected with the C+ pins of power module 11 after electrode is electrically connected, the second end of resistance R1 simultaneously and the drain electrode of mos pipes Q2,
The first end of resistance R3 is electrically connected, and the second end of resistance R3 is electrically connected with the base stage of triode Q1, triode Q3 simultaneously, and three
It is electrically connected with power switch circuit 15 after the emitter of pole pipe Q1, the emitter of triode Q3 are electrically connected, the source of mos pipes Q2
Pole, triode Q3 collector be electrically connected after be grounded.Second gate drive circuit 142 includes mos pipe Q5, triode Q4, three
The L1 pins of pole pipe Q6, resistance R5, the grid of resistance R6, mos pipe Q5 and the control chip U1 of control circuit 12 are electrically connected, electricity
It is electrically connected with the C+ pins of power module 11 after the collector of the first end, triode Q4 that hinder R5 is electrically connected, resistance R5's
First end of the second end simultaneously with the drain electrode of mos pipes Q5, resistance R6 is electrically connected, the second end of resistance R6 while and triode
The base stage electric connection of Q4, triode Q6, the emitter of triode Q4, the emitter of triode Q6 are opened after being electrically connected with power
Powered-down road 15 is electrically connected, and the source electrode of mos pipes Q5, the collector of triode Q6 are grounded after being electrically connected.Third gate-drive electricity
Road 143 includes mos pipe Q8, triode Q7, triode Q9, the grid of resistance R9, resistance R11, mos pipe Q8 and control circuit 12
The ends H2 for controlling chip U1 are electrically connected, after the first end of resistance R9, the collector of triode Q7 are electrically connected and power module
11 C+ pins are electrically connected, and the second end of resistance R9 is electrically connected with the first end of the drain electrode of mos pipes Q8, resistance R11 simultaneously,
The second end of resistance R11 is electrically connected with the base stage of triode Q7, triode Q9 simultaneously, emitter, the triode of triode Q7
It is electrically connected with power switch circuit 15 after the emitter of Q9 is electrically connected, the source electrode of mos pipes Q8, the collector electricity of triode Q9
Property connection after be grounded.4th gate drive circuit 144 includes mos pipe Q11, triode Q10, triode Q12, resistance R13, resistance
The ends L2 of the grid of R14, mos pipe Q11 and the control chip U1 of control circuit 12 are electrically connected, the first end of resistance R13, three poles
It is electrically connected with the C+ pins of power module 11 after the collector of pipe Q10 is electrically connected, the second end of resistance R13 while and mos
The drain electrode of pipe Q11, the first end of resistance R14 are electrically connected, the second end of resistance R14 while and triode Q10, triode Q12
Base stage be electrically connected, the emitter of triode Q10, triode Q12 emitter be electrically connected after and power switch circuit 15
It is electrically connected, the source electrode of mos pipes Q11, the collector of triode Q12 are grounded after being electrically connected.Wherein, mos pipes Q2, mos pipes Q5,
Mos pipe Q8, mos pipes Q11 is N-type mos pipes, and triode Q1, triode Q4, triode Q7, triode Q10 are NPN type three
Pole pipe, triode Q3, triode Q6, triode Q9, triode Q12 are PNP type triode.Wherein, the resistance value of resistance R1 is excellent
2K Ω are selected as, the resistance value of resistance R3 is preferably 100 Ω, and the resistance value of resistance R5 is preferably 680 Ω, and the resistance value of resistance R6 is preferably
The resistance value of 100 Ω, resistance R9 are preferably 2K Ω, and the resistance value of resistance R11 is preferably 100 Ω, and the resistance value of resistance R13 is preferably 680
The resistance value of Ω, resistance R14 are preferably 100 Ω, and the model of mos pipes Q2, Q5, Q8, Q11 is preferably 2N7002, triode Q1,
The model of Q3, Q4, Q6, Q7, Q9, Q10, Q12 are preferably S8050.
Driving circuit 14 further include resistance R2, resistance R4, resistance R7, resistance R8, resistance R10, resistance R12, resistance R15 and
Resistance R16.The ends H1 of the control chip U1 of resistance R4 first ends and control circuit 12 are electrically connected, resistance R4 second ends simultaneously and
The grid of mos pipes Q2, the first end of resistance R2 are electrically connected, the voltage conversion unit U2 of resistance R2 second ends and power module 11
Output end be electrically connected；The ends L1 of the control chip U1 of resistance R7 first ends and control circuit 12 are electrically connected, resistance R7 the
Two ends are electrically connected with the first end of the grid of mos pipes Q5, resistance R8 simultaneously, the source electrode electricity of resistance R8 second ends and mos pipes Q5
Property connection；The ends H2 of the control chip U1 of resistance R12 first ends and control circuit 12 are electrically connected, and resistance R12 second ends are simultaneously
It is electrically connected with the grid of mos pipes Q8, the first end of resistance R10, the voltage conversion of resistance R10 second ends and power module 11 is single
The output end of first U2 is electrically connected；The ends L2 of the control chip U1 of resistance R15 first ends and control circuit 12 are electrically connected, resistance
R15 second ends are electrically connected with the first end of the grid of mos pipes Q11, resistance R16 simultaneously, resistance R16 second ends and mos pipes Q11
Source electrode be electrically connected.Resistance R2, resistance R8, resistance R10 and resistance R16 are the level of circuit with stable, provide reliability.
Resistance R4, resistance R7, resistance R12 and resistance R15 be gate pole current-limiting resistance, control the actuating speed of gate pole, prevent mos pipes Q2,
It is overcharged caused by the capacitive charge of mos pipe Q5, mos pipe Q8, mos pipes Q11, charge less interference control chip U1, control is avoided to control
The ends H1 of I/O mouthfuls of coremaking piece, the keeper effect at the ends L1, the ends H2 and the ends L2.Wherein, the resistance value of resistance R2 is preferably 100K Ω, electricity
The resistance value for hindering R4 is preferably 1K Ω, and the resistance value of resistance R7 is preferably 680 Ω, and the resistance value of resistance R8 is preferably 100K Ω, resistance R10
Resistance value be preferably 100K Ω, the resistance value of resistance R12 is preferably 1K Ω, and the resistance value of resistance R15 is preferably 680 Ω, resistance R16's
Resistance value is preferably 100K Ω.It is appreciated that resistance R2, resistance R4, resistance R7, resistance R8, resistance R10, resistance R12, resistance R15
It can be omitted with resistance R16.
Referring to Fig. 6, power switch circuit 15 includes mos pipes Q13A, mos pipe Q14A, mos pipe Q13B, mos pipe Q14B,
Resistance R44, resistance R45, resistance R46, resistance R47, resistance R48, capacitance C22, capacitance C23, capacitance C26 and capacitance C27, resistance
The first end of R44 is electrically connected with the emitter of triode Q4, triode Q6 simultaneously, the second end and mos pipes Q13A of resistance R44
Grid be electrically connected, the first end of resistance R45 simultaneously and the electric connection of the emitter of mos pipe Q1, mos pipes Q3, resistance R45's
The grid of second end and mos pipes Q14A are electrical, the source electrode of mos pipes Q13A while and capacitance C22, the first end of capacitance C23, power supply
The C+ pins of module 11 are electrically connected, capacitance C22, capacitance C23 second end be electrically connected after simultaneously and the source of mos pipes Q14A
Pole, current feedback circuit 132 resistance R30 second end be electrically connected, mos pipes Q13A drain electrode and mos pipes Q14A drain electrode
It is electrically connected with coil circuit 16 after electric connection, the first end of resistance R46 is simultaneously and the transmitting of triode Q10, triode Q12
Pole is electrically connected, and the second end of resistance R46 and the grid of mos pipes Q13B are electrically connected, the first end of resistance R47 while and mos
The emitter of pipe Q7, mos pipe Q9 is electrically connected, and the second end of resistance R47 and the grid of mos pipes Q14B are electrically connected, mos pipes
The source electrode of Q13B simultaneously and the C+ pins electric connection of capacitance C26, the first end of capacitance C27, power module 11, capacitance C26, electricity
Hold C27 second end be electrically connected after simultaneously and the source electrode of mos pipes Q14B, current feedback circuit 132 resistance R30 second end
Be electrically connected, capacitance C26, capacitance C27 second end be electrically connected after be also grounded by resistance R48, the drain electrode of mos pipes Q13B and
It is electrically connected with coil circuit 16 after the drain electrode of mos pipes Q14B is electrically connected.Wherein, mos pipes Q13A and mos pipe Q13B is P
Type mos pipes, the mos pipes Q14A and mos pipe Q14B are N-type mos pipes.
Referring to Fig. 7, coil circuit 16 is a LC resonance circuit, coil circuit 16 includes inductance L1, capacitance C16, capacitance
C17, capacitance C20 and capacitance C21, the first end of inductance L1 are electrically connected with the drain electrode of mos pipe Q13A, mos pipes Q14A simultaneously, electricity
Feel the second end of L1 simultaneously and the first end electric connection of capacitance C16, capacitance C17, capacitance C20, capacitance C21, the of inductance L1
Two ends also simultaneously and resistance R19 first end, the first end of capacitance C12 electric connection, capacitance C16, capacitance C17, capacitance C20,
The second end of capacitance C21 is electrically connected with the drain electrode of mos pipe Q13B, mos pipes Q14B simultaneously after being electrically connected.
Referring to Fig. 8, indicating circuit 17 is when coil circuit 16 works, indicating circuit 17 is lighted or is flickered.Instruction electricity
Road 17 includes Light-emitting diode LED 1 and resistance R43.The anode of light emitting diode and the output end of voltage conversion unit electrically connect
It connects, the cathode of Light-emitting diode LED 1 is electrically connected by the ends LED_Start of resistance R43 and control chip U1.
For wireless charger 10 in electron equipment wireless charging, control chip sends two groups of control signals to driving circuit
14, two groups of control signals are two group pulse signals of reverse complemental, and the phase of two groups of control signals differs 180 °, in one group of control
When signal is high level, another group of control signal is then low level.Every group of control signal includes the consistent pulse letter of two level
Number.Driving circuit 14 exports two groups of drive signals to power switch circuit 15 according to two groups of control signals, and two groups of drive signals are
Two complementary group pulse signals, every group of control signal includes two consistent pulse signals of level, 15 basis of power switch circuit
Drive signal exports the resonance signal of one group of reverse complemental, and one group of resonance signal includes the pulse signal of two reverse complementals, line
It encloses circuit 16 and energy is exported with electronic device wireless charging according to one group of resonance signal.Wherein, the voltage of the drive signal
More than the voltage of control signal.
Referring to Fig. 9, wireless charger 10 in electron equipment wireless charging due to output be the period pulse letter
Number, a cycle is divided into two stages, below to different phase when wireless charger 10 work when circuit state illustrate.
In the first stage, the ends H1 and the ends L1 of control chip U1 all exports high level signal, mos pipes Q2 conductings, to send a telegraph
The first end ground connection of R3 is hindered, it is low level to make the base stage of triode Q1, the base stage of triode Q3, since triode Q1 is NPN type
Triode, triode Q3 are PNP type triode, therefore triode Q3 conductings, triode Q1 cut-offs, and the emitter of triode Q3 passes through
The grounded collector of triode Q3, it is low level signal to be equivalent to the output of the first gate drive circuit 141.Similarly, mos pipes Q5
Conducting, triode Q6 conductings, triode Q4 cut-offs, it is low level signal to be equivalent to the output of the second gate drive circuit 142.?
First stage, the ends H2 and the ends L2 of control chip U1 all export low level signal, and the Q8 cut-offs of mos pipes, the electric current of C+ pins is successively
By reaching the base stage of the base stage and triode Q9 of triode Q7 after resistance R9 and resistance R11, make the base stage and three of triode Q7
The base stage of pole pipe Q9 is all high level, and since triode Q7 is NPN type triode, triode Q9 is PNP type triode, therefore three poles
The circuit of pipe Q7 conductings, triode Q9 cut-offs, C+ pins flows to resistance R47 after triode Q7 conductings, is equivalent to third gate pole
The output of driving circuit 143 is high level signal.Similarly, mos pipes Q11, triode Q12 cut-offs, triode Q10 conductings, quite
It is high level signal to be exported in the 4th gate drive circuit 144.
What the first gate drive circuit 141 and the second gate drive circuit 142 exported is all low level signal, due to mos
Pipe Q13A is p-type mos pipes, and mos pipes Q14A is N-type mos pipes, therefore the Q13A conductings of mos pipes, the Q14A cut-offs of mos pipes, and third gate pole drives
143 and the 4th gate drive circuit 144 output of dynamic circuit is all high level signal, since mos pipes Q13B is p-type mos pipes,
Mos pipes Q14B is N-type mos pipes, therefore the Q13B cut-offs of mos pipes, the Q14B conductings of mos pipes.The trend of current direction is followed successively by C+ pins,
Mos pipe Q13A, inductance L1, capacitance C16, C17, C20, C21 in parallel, mos pipe Q14B, resistance R48 are grounded.
In second stage, the ends H1 and the ends L1 of control chip U1 all export low level signal, the ends H2 of control chip U1 and
The ends L2 all export high level signal, the Q2 cut-offs of mos pipes, and the electric currents of C+ pins reaches three poles after passing sequentially through resistance R1 and resistance R3
The base stage of the base stage of the base stage and triode Q3 of pipe Q1, the base stage and triode Q3 that make triode Q1 is all high level, due to three
Pole pipe Q1 is NPN type triode, and triode Q3 is PNP type triode, therefore triode Q1 conductings, triode Q3 cut-offs, C+ pins
Circuit flow to resistance R45 after triode Q1 conducting, it is high level letter to be equivalent to the output of the first gate drive circuit 141
Number.Similarly, mos pipes Q5, triode Q6 cut-offs, triode Q4 conductings, it is height to be equivalent to the output of the second gate drive circuit 142
Level signal.In second stage, the ends H2 and the ends L2 of control chip U1 all export high level signal, mos pipes Q8 conductings, to send a telegraph
The first end ground connection of R11 is hindered, it is low level to make the base stage of triode Q7, the base stage of triode Q9, since triode Q7 is NPN type
Triode, triode Q9 are PNP type triode, therefore triode Q9 conductings, triode Q7 cut-offs, and the emitter of triode Q9 passes through
The grounded collector of triode Q9, it is low level signal to be equivalent to the output of third gate drive circuit 143.Similarly, mos is managed
Q11, triode Q12 conductings, triode Q10 cut-offs, it is low level signal to be equivalent to the output of the 4th gate drive circuit 144.
What the first gate drive circuit 141 and the second gate drive circuit 142 exported is all high level signal, due to mos
Pipe Q13A is p-type mos pipes, and mos pipes Q14A is N-type mos pipes, therefore the Q13A cut-offs of mos pipes, the Q14A conductings of mos pipes, and third gate pole drives
143 and the 4th gate drive circuit 144 output of dynamic circuit is all low level signal, since mos pipes Q13B is p-type mos pipes,
Mos pipes Q14B is N-type mos pipes, therefore the Q13B conductings of mos pipes, the Q14B cut-offs of mos pipes.The trend of current direction is followed successively by C+ pins,
Mos pipes Q13B, capacitance C16, C17, C20, C21 in parallel, inductance L1, mos pipe Q14A, resistance R48 are grounded.
First stage and second stage continuously replace, the effect of the inductance L1 of coil circuit 16 in different current directions
Under, inductance L1 transmitting capacity electronic device wireless chargings.
Compared with prior art, the wireless charger of the utility model includes power module, control circuit, full-bridge driving electricity
Road, power switch circuit and coil circuit, control circuit, full bridge driving circuit, power switch circuit and coil circuit are electric successively
Property be connected in series with, control circuit and power module are electrically connected, and control circuit sends control signal to full bridge driving circuit, full-bridge
For driving circuit according to control signal output drive signal to power switch circuit, power switch circuit exports one according to drive signal
The resonance signal of group reverse complemental, coil circuit export energy with electronic device wireless charging, charging effect according to resonance signal
Fruit is good, and charge efficiency is high, meets the demand of user.
The full bridge driving circuit of the utility model further includes resistance R2, resistance R4, resistance R7, resistance R8, resistance R10, electricity
R12, resistance R15 and resistance R16 are hindered, resistance R4 first ends and control circuit are electrically connected, and resistance R4 second ends are managed with mos simultaneously
The grid of Q2, the first end of resistance R2 are electrically connected, and resistance R2 second ends and power module are electrically connected；Resistance R7 first ends and
Control circuit is electrically connected, and resistance R7 second ends are electrically connected with the first end of the grid of mos pipes Q5, resistance R8 simultaneously, resistance
The source electrode of R8 second ends and mos pipes Q5 are electrically connected；Resistance R12 first ends and control circuit are electrically connected, resistance R12 second ends
It is electrically connected simultaneously with the first end of the grid of mos pipes Q8, resistance R10, resistance R10 second ends and power module are electrically connected；
Resistance R15 first ends and control circuit are electrically connected, resistance R15 second ends simultaneously and the grid of mos pipes Q11, resistance R16 the
One end is electrically connected, and the source electrode of resistance R16 second ends and mos pipes Q11 are electrically connected, resistance R4, resistance R7, resistance R12 and electricity
The actuating speed for hindering R15 control full bridge driving circuits, prevents the capacitive character of mos pipe Q2, mos pipe Q5, mos pipe Q8, mos pipes Q11
It is overcharged caused by charge, charge less interference control circuit.
The wireless charger of the utility model further includes voltage feedback circuit, current feedback circuit, the Voltage Feedback electricity
Road is connected with coil circuit, control circuit simultaneously, the current feedback circuit while and power switch circuit, power module, control
Circuit processed is electrically connected, and voltage feedback circuit and current feedback circuit can the voltage coil circuit output, current feedbacks in time
To control circuit, for control circuit with the output of control coil circuit, wireless charging effect is good.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Any modification made by within the principle of utility model, equivalent replacement and improvement etc. should all include the scope of protection of the utility model
Within.
Claims (10)
1. a kind of wireless charger is used for electron equipment wireless charging, it is characterised in that：The wireless charger includes power supply
Module, control circuit, full bridge driving circuit, power switch circuit and coil circuit, control circuit, full bridge driving circuit, power
Switching circuit and coil circuit are electrically connected in series successively, and control circuit and power module are electrically connected, and control circuit sends control
Signal processed is to full bridge driving circuit, and full bridge driving circuit is according to control signal output drive signal to power switch circuit, power
Switching circuit according to drive signal export one group of reverse complemental resonance signal, coil circuit according to resonance signal export energy with
Electronic device wireless charging.
2. wireless charger as described in claim 1, it is characterised in that：The full bridge driving circuit includes two half-bridge drivens
Circuit, two groups of half-bridge drive circuits are all electrically connected with control circuit, power switch circuit, power module simultaneously respectively, control
Circuit sends control signal to half-bridge drive circuit, the control signal level reverse complemental that two half-bridge drive circuits receive.
3. wireless charger as described in claim 1, it is characterised in that：The full bridge driving circuit includes mos pipes Q2, mos
Pipe Q5, mos pipe Q8, mos pipe Q11, triode Q1, triode Q3, triode Q4, triode Q6, triode Q7, triode Q9,
Triode Q10, triode Q12, resistance R1, resistance R3, resistance R5, resistance R6, resistance R9, resistance R11, resistance R13 and resistance
The grid and control circuit of R14, mos pipe Q2 are electrically connected, after the first end of resistance R1, the collector of triode Q1 are electrically in parallel
It being electrically connected with power module, the second end of resistance R1 is electrically connected with the first end of the drain electrode of mos pipes Q2, resistance R3 simultaneously,
The second end of resistance R3 is electrically connected with the base stage of triode Q1, triode Q3 simultaneously, emitter, the triode Q3 of triode Q1
Emitter parallel connection after and power switch circuit be electrically connected, after the source electrode of mos pipes Q2, the collector of triode Q3 are electrically in parallel
Ground connection, the grid and control circuit of mos pipes Q5 are electrically connected, and the first end of resistance R5, the collector of triode Q4 are electrically in parallel
It is electrically connected afterwards with power module, the second end of resistance R5 electrically connects with the first end of the drain electrode of mos pipes Q5, resistance R6 simultaneously
It connects, the second end of resistance R6 is electrically connected with the base stage of triode Q4, triode Q6 simultaneously, the emitter of triode Q4, three poles
It is electrically connected with power switch circuit after the emitter parallel connection of pipe Q6, the source electrode of mos pipes Q5, the collector of triode Q6 are electrically simultaneously
It is grounded after connection；The grid and control circuit of mos pipes Q8 is electrically connected, and the first end of resistance R9, the collector of triode Q7 are electrical
It is electrically connected with power module after parallel connection, the second end of resistance R9 is simultaneously and the first end of the drain electrode of mos pipes Q8, resistance R11 is electric
Property connection, the second end of resistance R11 simultaneously and the base stage electric connection of triode Q7, triode Q9, the emitter of triode Q7,
It is electrically connected with power switch circuit after the emitter parallel connection of triode Q9, the source electrode of mos pipes Q8, the collector electricity of triode Q9
It is grounded after property parallel connection；The grid and control circuit of mos pipes Q11 is electrically connected, the first end of resistance R13, the current collection of triode Q10
It is electrically connected with power module after extremely electrically in parallel, the second end of resistance R13 is simultaneously and the drain electrode of mos pipes Q11, resistance R14
First end is electrically connected, and the second end of resistance R14 is electrically connected with the base stage of triode Q10, triode Q12 simultaneously, triode
It is electrically connected with power switch circuit after the emitter parallel connection of the emitter, triode Q12 of Q10, the source electrode of mos pipes Q11, three poles
It is grounded after the collector of pipe Q12 is electrically in parallel.
4. wireless charger as claimed in claim 3, it is characterised in that：Described mos pipes Q2, mos pipe Q5, mos pipe Q8, mos
Pipe Q11 is N-type mos pipes, and triode Q1, triode Q4, triode Q7, triode Q10 are NPN type triode, triode
Q3, triode Q6, triode Q9, triode Q12 are PNP type triode.
5. wireless charger as claimed in claim 3, it is characterised in that：The full bridge driving circuit further includes resistance R2, electricity
Hinder R4, resistance R7, resistance R8, resistance R10, resistance R12, resistance R15 and resistance R16, resistance R4 first ends and control circuit electricity
Property connection, resistance R4 second ends are electrically connected with the first end of the grid of mos pipes Q2, resistance R2 simultaneously, resistance R2 second ends with
Power module is electrically connected；Resistance R7 first ends and control circuit are electrically connected, and resistance R7 second ends are simultaneously and the grid of mos pipes Q5
The source electrode of the first end electric connection of pole, resistance R8, resistance R8 second ends and mos pipes Q5 are electrically connected；Resistance R12 first ends and
Control circuit is electrically connected, and resistance R12 second ends are electrically connected with the first end of the grid of mos pipes Q8, resistance R10 simultaneously, electricity
It hinders R10 second ends and power module is electrically connected；Resistance R15 first ends and control circuit are electrically connected, and resistance R15 second ends are same
When and the first end of the grid of mos pipes Q11, resistance R16 be electrically connected, the source electrode of resistance R16 second ends and mos pipes Q11 are electrical
Connection.
6. wireless charger as claimed in claim 3, it is characterised in that：The power switch circuit includes mos pipe Q13A,
Mos pipes Q14A, mos pipe Q13B, mos pipe Q14B, resistance R44, resistance R45, resistance R46, resistance R47, resistance R48, capacitance
C22, capacitance C23, capacitance C46 and capacitance C47, the first end of resistance R44 is simultaneously and the emitter of triode Q4, triode Q6 are electric
Property connection, the grid of the second end of resistance R44 and mos pipes Q13A is electrically connected, the first end of resistance R45 simultaneously and mos pipes Q1,
The emitter of mos pipes Q3 is electrically connected, and the second end of resistance R45 and the grid of mos pipes Q14A are electrical, the source electrode of mos pipes Q13A
Simultaneously and capacitance C22, the first end of capacitance C23, power module electric connection, capacitance C22, capacitance C23 second end electrically simultaneously
It is electrically connected simultaneously with the source electrode of mos pipes Q14A, current feedback circuit after connection, the drain electrode of mos pipes Q13A and the leakage of mos pipes Q14A
It is electrically connected with coil circuit extremely after parallel connection, the first end of resistance R46 is simultaneously and the emitter of triode Q10, triode Q12 are electric
Property connection, the grid of the second end of resistance R46 and mos pipes Q13B is electrically connected, the first end of resistance R47 simultaneously and mos pipes Q7,
The emitter of mos pipes Q9 is electrically connected, and the second end of resistance R47 and the grid of mos pipes Q14B are electrically connected, mos pipes Q13B's
Source electrode is electrically connected with capacitance C26, the first end of capacitance C27, power module simultaneously, and capacitance C26, the second end of capacitance C27 are electric
Property parallel connection after be electrically connected simultaneously with the source electrode of mos pipes Q14B, current feedback circuit, capacitance C26, the second end of capacitance C27 are electric
Property parallel connection after be also grounded by resistance R48, mos pipes Q13B drain electrode and mos pipes Q14B drain electrode parallel connection after and coil circuit electricity
Property connection.
7. wireless charger as claimed in claim 6, it is characterised in that：The mos pipes Q13A and mos pipe Q13B is p-type
Mos is managed, and the mos pipes Q14A and mos pipe Q14B is N-type mos pipes.
8. wireless charger as claimed in claim 6, it is characterised in that：The coil circuit include inductance L1, capacitance C16,
Capacitance C17, capacitance C20 and capacitance C21, the first end of inductance L1 electrically connect with the drain electrode of mos pipe Q13A, mos pipes Q14A simultaneously
Connect, the second end of inductance L1 simultaneously and the first end electric connection of capacitance C16, capacitance C17, capacitance C20, capacitance C21, capacitance
C16, capacitance C17, capacitance C20, capacitance C21 second end parallel connection after simultaneously and mos pipe Q13B, mos pipes Q14B drain electrode it is electrical
Connection.
9. wireless charger as described in claim 1, it is characterised in that：The wireless charger further includes Voltage Feedback electricity
Road, current feedback circuit, the voltage feedback circuit are connected with coil circuit, control circuit simultaneously, the current feedback circuit
It is electrically connected simultaneously with power switch circuit, power module, control circuit.
10. wireless charger as described in claim 1, it is characterised in that：The wireless charger further includes indicating circuit, institute
It states indicating circuit and control circuit is electrically connected, indicating circuit is lighted or flickered when the coil circuit works.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820232398.5U CN208094217U (en) | 2018-02-08 | 2018-02-08 | A kind of wireless charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820232398.5U CN208094217U (en) | 2018-02-08 | 2018-02-08 | A kind of wireless charger |
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| Publication Number | Publication Date |
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| CN208094217U true CN208094217U (en) | 2018-11-13 |
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| CN201820232398.5U Active CN208094217U (en) | 2018-02-08 | 2018-02-08 | A kind of wireless charger |
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| CN (1) | CN208094217U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114336990A (en) * | 2021-12-30 | 2022-04-12 | 协创数据技术股份有限公司 | Non-contact charging device of cleaning product |
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2018
- 2018-02-08 CN CN201820232398.5U patent/CN208094217U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114336990A (en) * | 2021-12-30 | 2022-04-12 | 协创数据技术股份有限公司 | Non-contact charging device of cleaning product |
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