CN108767998A - A kind of wireless charger - Google Patents
A kind of wireless charger Download PDFInfo
- Publication number
- CN108767998A CN108767998A CN201810909644.0A CN201810909644A CN108767998A CN 108767998 A CN108767998 A CN 108767998A CN 201810909644 A CN201810909644 A CN 201810909644A CN 108767998 A CN108767998 A CN 108767998A
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- CN
- China
- Prior art keywords
- module
- charging
- power
- circuit
- power supply
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses wireless charger, solving the problems, such as that charging wire layout is cumbersome, contacts plug may get an electric shock.The present invention includes power module, transmitting module, transmission module, receiving module, charging module, power module is connect with transmitting module, transmitting module connects transmission module, energy is passed to receiving module by transmission module by coil coupled modes, received mould reception conversion circuit in the block is changing into direct current, charges for electronic equipment by the regulator circuit output stabling current in charging module.It is characterized in that, charging module includes speed charging conversion circuit, speed charging conversion circuit according to transmitting coil in transmission module between receiving coil at a distance from select charging modes.And power module includes power supply switch circuit, and power module input is DC power supply and AC power, by power supply switch circuit, auto switching electric source.The present invention have many advantages, such as wireless charging, it is easy to carry, at low cost, without connecting up.
Description
Technical field
The present invention relates to wireless charging technologies, and in particular to a kind of wireless charger.
Background technology
It is mainly connected using one end currently, mobile phone, MP3 are charged with portable electronic devices such as laptops
AC power, the other end connect traditional charging modes of portable electronic device rechargeable battery.This mode has many unfavorable
Place, such as frequent plug are easy to damage connector, it is also possible to bring the danger etc. of electric shock.However, non-contact inductive charge
System would not have the above problem.Wireless charging technology by its is easy to carry, at low cost, without the advantages such as wiring rapidly by
It is paid close attention to all circles.
Invention content
The technical problem to be solved by the present invention is to：Charging wire layout is cumbersome, contact plug may get an electric shock, and the present invention provides
The wireless charger that solves the above problems.
The present invention is achieved through the following technical solutions：
Wireless charger, including power module, transmitting module, transmission module, receiving module, control module, charging module,
Power module is connect with transmitting module, and transmitting module connects transmission module, and transmission module passes energy by coil coupled modes
Pass receiving module, receiving module by the energy rectification received, filtering transformation at direct current after, be transmitted further to charging module warp
Stabling current is exported after regulator circuit processing, electronic equipment is made to charge, which is characterized in that charging module further includes that speed charging turns
Circuit is changed, receiving module output end is connect with speed charging conversion circuit input terminal, control module and speed charging conversion circuit
Connection, speed charging conversion circuit according to transmitting coil in transmission module between receiving coil at a distance from select charging modes, fill
When electricity is up to regulation electricity, charging signals are interrupted in control module output, complete charging.
The wireless charger, which is characterized in that fast and slow charge conversion circuit include diode D3 and D4, triode Q1,
Metal-oxide-semiconductor VT4, slide rheostat R6 and R7, either-or switch S1, resistance R8 and R9, capacitance C13, the input of fast and slow charge conversion circuit
End is connect after diode D3 and D4 series arms partial pressure, then through resistance R8 and R9 partial pressure with metal-oxide-semiconductor VT4 grids；Alternative is opened
It is in parallel with D4 series arms with diode D3 to close S1, resistance R6 and triode Q1 series arms；Triode Q1 collectors and metal-oxide-semiconductor
The capacitance C13 connected between VT4 source electrodes.
The wireless charger, which is characterized in that power module includes power supply switch circuit, and power module input is straight
Galvanic electricity source and AC power, by power supply switch circuit, auto switching electric source.
The wireless charger, which is characterized in that power supply switch circuit includes rectifier bridge, triode VT1 and VT2, two
Pole pipe D1, regulator circuit, power supply switch circuit input power are AC and DC, and exchange input is divided into two through transformer pressure-reducing
Branch, the DC voltage that a branch is generated by rectification, filtering are added to the base stage of VT2 through R1 partial pressures；Another branch, rectified,
Stable electric current is exported to the resonant tank in transmitting module after filtering, voltage stabilizing, and direct current input positive terminal is connect with VT1 source electrodes, warp
VT1 drain electrode input diode D1, then through regulator circuit, stable signal is exported to the resonant tank in transmitting module.
The wireless charger, which is characterized in that transmitting module includes oscillator and power amplifier, and oscillator includes
NE555 and its peripheral circuit；Power amplifier includes resonant tank and switching tube.
The design of wireless charger of the present invention is to utilize electromagnetic induction principle, by two coils of transmission module into
Row energy coupling realizes the transmission of energy.System input power can be alternating current and direct current, input for electric main when, first
Through transformer pressure-reducing, it is divided into two branches, alternating current is converted to the direct current needed for system by a branch through full-bridge rectification, then is passed through
Stable signal is exported after rectification, filtering, voltage stabilizing to the resonant tank in transmitting module.Meanwhile another branch passes through rectification, filter
The DC voltage that wave generates is added to the base stage of VT2, VT2 conductings, VT1 cut-offs through R1 partial pressures so that DC power supply powers branch not
It is logical.When input is DC power supply, VT2 cut-offs, and VT1 is connected, DC power supply is transferred to regulator circuit by VT1, and output is steady
Fixed signal is to the resonant tank in transmitting module.
Transmitting module includes oscillator and power amplifier, and oscillator uses NE555 for acp chip, generates frequency
The signal of 510KHz；The variable capacitance C6 of the resonant tank of regulation power amplifier makes resonant frequency and the oscillation of resonant tank
The signal frequency that device generates is identical, and resonance occurs for power amplifier, and the transmitting coil of transmission module generates maximum alternation at this time
Electromagnetic field.
Receiving coil in transmission module and transmitting coil close to when, induced voltage is generated in receiving coil, using
The conversion circuit that receives in charging module is changing into direct current as battery charging.Fast and slow charge conversion circuit in charging module includes
Two parallel branches.One routing input terminal is after diode D3 and D4 series arms partial pressure, then is divided through resistance R8 and R9 and be
Metal-oxide-semiconductor VT4 grids provide threshold voltage so that metal-oxide-semiconductor VT4 conductings；Another routing resistance R6 or resistance R7 series connection alternatives
Switch S1, either-or switch S1 other end connecting triodes Q1 form series arm.Transmitting coil in transmission module and reception
The different selection access resistance R6 and resistance R7 of the distance between coil D.The PN junction pressure drop of triode is fixed, then is connected into circuit
Partial pressure on resistance R6 or resistance R7 is fixed, and resistance R6 is different from R7 resistance values, and electric current is different, triode Q1 collectors and metal-oxide-semiconductor
The capacitance C13 charging time connected between source electrode is different, reaches fast and slow charge conversion purpose；Capacitance C13 charge threshold voltages are fixed,
The P2.0 pins of the core controller MSP430f2274 microcontrollers of control module connect capacitance C13 anodes, and detection capacitance C13 reaches
When to charging voltage threshold value, the P3.0 pins output control signal of the core controller MSP430f2274 microcontrollers of control module
To metal-oxide-semiconductor VT4 grids, metal-oxide-semiconductor VT4 is made to end, fast and slow charge conversion circuit and receiving module output branch are obstructed, and interruptive current is defeated
Go out, completes charging.
The present invention has the advantage that and advantageous effect：
1, wireless charger of the present invention, including power module, transmitting module, transmission module, receiving module, charging
Module, have wireless charging, it is easy to carry, at low cost, without wiring etc. advantages；
2, wireless charger of the present invention, charging module include speed charging conversion circuit, and there are two types of charging sides for tool
Formula；
3, wireless charger of the present invention, power module include power supply switch circuit, and power input is direct current and friendship
Stream, by power supply switch circuit, auto switching electric source.
Description of the drawings
Attached drawing described herein is used for providing further understanding the embodiment of the present invention, constitutes one of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings：
Fig. 1 is system block diagram.
Fig. 2 is power supply switch circuit figure.
Fig. 3 is transmitting module circuit diagram.
Fig. 4 is charging module circuit diagram.
Specific implementation mode
To make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiment and attached drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation are only used for explaining the present invention, do not make
For limitation of the invention.
Embodiment 1
Wireless charger, including power module, transmitting module, transmission module, receiving module, charging module, feature exist
In power module is connect with transmitting module, and transmitting module connects transmission module.Transmitting module includes oscillator and power amplification
Device, oscillator include NE555 and its peripheral circuit；Power amplifier includes resonant tank and switching tube.Transmitting module is through cross to shake
It swings device and generates signal, and amplify signal by power amplifier so that the power of the signal reaches the power requirement of transmission.It passes
Defeated module utilizes electromagnetic induction principle, and the energy that transmitting module is generated transmits receiving coil by coil coupled modes.It receives
Coil, receiving module and charging module are mounted in electronic equipment to be charged, in the received module of energy in receiving coil
Reception conversion circuit be changing into direct current, using in charging module regulator circuit output stabling current filled for electronic equipment
Electricity.Charging module includes speed charging conversion circuit, and speed charging conversion circuit is according to transmitting coil in transmission module and reception
Distance between coil selects charging modes.When being more than 2 centimetres at a distance from transmitting coil is between receiving coil, according to capacitor charging
Formula, full of under identical voltage situation, charging duration is longer, and charging current is smaller, and the resistance accessed in circuit is larger, fast and slow charge
Switch S1 in power conversion circuit connects branch where resistance R6；When being less than 2 centimetres at a distance from transmitting coil is between receiving coil
When, the switch S1 in speed charging conversion circuit connects branch where resistance R7.Control module detects capacitance C13 both end voltages,
When reaching threshold voltage, the P3.0 pins output control signal of the core controller MSP430f2274 microcontrollers of control module makes
Metal-oxide-semiconductor VT4 cut-offs, and then control receiver module output current reach control charging duration.
Embodiment 2
The present embodiment includes power supply switch circuit difference lies in power module with embodiment 1, and power module input is straight
Galvanic electricity source and AC power, by power supply switch circuit, auto switching electric source.System input power can be alternating current and direct current
Electricity, input for electric main when, alternating current is converted to the direct current needed for system through full-bridge rectification；Input is DC power supply
When, it is directly system power supply.Power supply switch circuit is defeated after transformer pressure-reducing, then after rectified, filtering, voltage stabilizing by electric main
Go out, for loaded work piece.Meanwhile another branch divides the base stage for being added to VT2 by the DC voltage that rectification, filtering generate through R1,
VT2 is connected, VT1 cut-offs so that DC power supply power supply branch is obstructed.When input is DC power supply, VT2 cut-offs, and VT1 is led
Logical, DC power supply is transferred to regulator circuit by VT1, exports stable signal to the resonant tank in transmitting module.Emit mould
Block connects transmission module, and energy is passed to receiving module by transmission module by coil coupled modes, and received mould is in the block to be connect
It receives conversion circuit and is changing into direct current, charge for electronic equipment by the regulator circuit output stabling current in charging module.
Above-described specific implementation mode has carried out further the purpose of the present invention, technical solution and advantageous effect
It is described in detail, it should be understood that the foregoing is merely the specific implementation mode of the present invention, is not intended to limit the present invention
Protection domain, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (5)
1. a kind of wireless charger, it is characterised in that：Including power module, transmitting module, transmission module, receiving module, control
Module, charging module, power module are connect with transmitting module, and transmitting module connects transmission module, and transmission module passes through energy
Coil coupled modes pass to receiving module, receiving module by the energy rectification received, filtering transformation at direct current after, then pass
It is defeated by charging module and exports stabling current after regulator circuit is handled, electronic equipment is made to charge, which is characterized in that charging module is also
Including speed charging conversion circuit, receiving module output end is connect with speed charging conversion circuit input terminal, control module with it is fast
Trickle charge power conversion circuit connect, speed charging conversion circuit according to transmitting coil in transmission module between receiving coil at a distance from select
Charging modes are selected, when charge volume is up to regulation electricity, charging signals are interrupted in control module output, complete charging.
2. a kind of wireless charger according to claim 1, which is characterized in that fast and slow charge conversion circuit includes diode D3
With D4, triode Q1, metal-oxide-semiconductor VT4, slide rheostat R6 and R7, either-or switch S1, resistance R8 and R9, fast and slow charge conversion electricity
Road input terminal is connect after diode D3 and D4 series arms partial pressure, then through resistance R8 and R9 partial pressure with metal-oxide-semiconductor VT4 grids；Two
Select a switch S1, resistance R6 and triode Q1 series arms in parallel with D4 series arms with diode D3；Triode Q1 collectors
The capacitance C13 connected between metal-oxide-semiconductor VT4 source electrodes.
3. a kind of wireless charger according to claim 1, which is characterized in that power module include power supply switch circuit and
Regulator circuit, power module input is DC power supply and AC power, by power supply switch circuit, auto switching electric source, then is passed through
Regulator circuit outputs signal to transmitting module.
4. power supply switch circuit according to claim 3 and regulator circuit, which is characterized in that power supply switch circuit includes whole
Bridge, triode VT1 and VT2, diode D1 are flowed, power supply switch circuit input power is AC and DC, and exchange input is through transformation
Device decompression is divided into two branches, and the DC voltage that a branch is generated by rectification, filtering is added to the base stage of VT2 through R1 partial pressures；Separately
One branch, rectified, filtering export stable electric current after voltage stabilizing to the resonant tank in transmitting module, direct current input positive terminal with
VT1 source electrodes connect, and through VT1 drain electrode input diode D1, then through regulator circuit, export stable signal to humorous in transmitting module
Shake circuit.
5. a kind of wireless charger according to claim 1, which is characterized in that transmitting module includes that oscillator and power are put
Big device, oscillator include NE555 and its peripheral circuit；Power amplifier includes resonant tank and switching tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810909644.0A CN108767998A (en) | 2018-08-10 | 2018-08-10 | A kind of wireless charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810909644.0A CN108767998A (en) | 2018-08-10 | 2018-08-10 | A kind of wireless charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108767998A true CN108767998A (en) | 2018-11-06 |
Family
ID=63969600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810909644.0A Withdrawn CN108767998A (en) | 2018-08-10 | 2018-08-10 | A kind of wireless charger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108767998A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110266113A (en) * | 2019-05-29 | 2019-09-20 | 北京航空航天大学 | Wireless power distribution system and control method between a kind of spacecraft |
| CN113691032A (en) * | 2021-07-30 | 2021-11-23 | 成都信息工程大学 | Electromagnetic resonance wireless charging device |
| CN113725966A (en) * | 2021-08-19 | 2021-11-30 | 乐歌人体工学科技股份有限公司 | Wireless charger with external direct-current power supply and charging method |
-
2018
- 2018-08-10 CN CN201810909644.0A patent/CN108767998A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110266113A (en) * | 2019-05-29 | 2019-09-20 | 北京航空航天大学 | Wireless power distribution system and control method between a kind of spacecraft |
| CN113691032A (en) * | 2021-07-30 | 2021-11-23 | 成都信息工程大学 | Electromagnetic resonance wireless charging device |
| CN113725966A (en) * | 2021-08-19 | 2021-11-30 | 乐歌人体工学科技股份有限公司 | Wireless charger with external direct-current power supply and charging method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181106 |