CN206992733U - A kind of synchronous rectification wireless charging control circuit and portable power source - Google Patents
A kind of synchronous rectification wireless charging control circuit and portable power source Download PDFInfo
- Publication number
- CN206992733U CN206992733U CN201720671751.5U CN201720671751U CN206992733U CN 206992733 U CN206992733 U CN 206992733U CN 201720671751 U CN201720671751 U CN 201720671751U CN 206992733 U CN206992733 U CN 206992733U
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- Prior art keywords
- circuit
- synchronous rectification
- wireless charging
- control circuit
- output
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model provides a kind of synchronous rectification wireless charging control circuit and portable power source, the synchronous rectification wireless charging control circuit includes input control circuit, circuit of synchronous rectification, governor circuit, output circuit, wireless charging circuit, battery protecting circuit, the input control circuit, circuit of synchronous rectification, output circuit, wireless charging circuit is connected with the governor circuit respectively, the input connection charge power supply of the input control circuit, the output end of the input control circuit connects the circuit of synchronous rectification, the output end of the circuit of synchronous rectification is connected with the output circuit, the circuit of synchronous rectification is also connected with the battery protecting circuit, the wireless charging circuit connects the output circuit and governor circuit.Synchronous rectification wireless charging control circuit provided by the utility model realizes that charging rate is fast without charging using synchronous rectification charge and discharge power technology, stable safe and reliable.
Description
Technical field
The utility model is related to electronic circuit technology field, more particularly to a kind of synchronous rectification wireless charging control circuit and
Portable power source.
Background technology
With the development of science and technology, smart machine especially mobile phone, tablet personal computer are increasingly popularized.People are to smart machine
Dependence is increasing, particularly smart mobile phone, serves not only as communication tool, also serves as amusement equipment, life instrument.But at present
The power supply capacity of this kind of smart machine in itself is limited, and endurance is limited, so people are big for the demand of emergent charging, especially
It is the crowd for time length of going out, it is bigger to the demand of charging, frequently.So the presence of emergent mobile charging device, just
The charge requirement of people can be met.
Its circuit part of existing portable power source is mainly made up of charging module, control module, discharge module.Charging module
Input voltage is down to after the normal voltage of lithium battery to lithium cell charging；The charging module chip of prior art uses mostly
Linear Control, its ripple cause greatly voltage pulsation, can play erroneous judgement, and linear-charging electric current is small, and voltage control accuracy is low, conversion efficiency
It is relatively low, cause device surface temperature high.Discharge module is made up of boost chip, metal-oxide-semiconductor, Schottky, capacitance resistance, by battery electricity
Pressure rises to output voltage, there is provided and burning voltage and constant current effect, the boost chip of prior art use asynchronous pressure boosting pattern,
Asynchronous pressure boosting pattern Schottky pressure drop is 0.5V, and caused loss is that electric current multiplies 0.5V on Schottky, therefore works as work temperature
Degree more than component peak when, device will damage or cause to export unstable.
Its battery part of existing portable power source is mostly lithium battery, and lithium battery capacity is big, it is necessary to fast charging and discharging,
It is required that charging current is big.The charging module chip of prior art uses Linear Control mostly, and its linear-charging electric current is small, serious shadow
The charging rate of portable power source is rung, also easily causes device surface temperature to raise；Meanwhile its discharge circuit mostly uses asynchronous liter
Die pressing type, its output current is small, and conversion efficiency is low, charge the phone it is slow, be also easily damaged device or cause export it is unstable.
Utility model content
In order to solve the above technical problems, the utility model patent purpose is to devise a kind of synchronous rectification wireless charging
Control circuit, realize that charging rate is fast without charging using synchronous rectification charge and discharge power technology, it is stable safe and reliable.
The specific technical scheme of the utility model is as follows：
A kind of synchronous rectification wireless charging control circuit, the synchronous rectification wireless charging control circuit include input and controlled
Circuit, circuit of synchronous rectification, governor circuit, output circuit, wireless charging circuit, battery protecting circuit, the input control electricity
Road, circuit of synchronous rectification, output circuit, wireless charging circuit are connected with the governor circuit respectively, the input control circuit
Input connection charge power supply, the output end of the input control circuit connects the circuit of synchronous rectification, and the synchronization is whole
The output end of current circuit is connected with the output circuit, and the circuit of synchronous rectification is also connected with the battery protecting circuit, institute
State wireless charging circuit and connect the output circuit and governor circuit.
Specifically, synchronous rectification wireless charging control circuit described in the utility model also includes being connected with the governor circuit
Display circuit.
Specifically, input control circuit described in the utility model includes charging inlet, first resistor, second resistance, first
Test point, the first transistor and second transistor, the first resistor are connected with second resistance, first resistor and second resistance
Junction is provided with the first test point, and first test point is connected with the governor circuit, the first transistor and the second crystalline substance
Body pipe is in parallel.
Specifically, circuit of synchronous rectification described in the utility model include the first inductance, the first controller, second controller,
First pwm circuit and the second pwm circuit, first controller are connected with the first pwm circuit, second controller and the 2nd PWM
Circuit connects.
Specifically, wireless charging circuit described in the utility model uses chip model as CV90312T.
Specifically, governor circuit described in the utility model includes singlechip chip, the singlechip chip respectively with it is described
Input control circuit, circuit of synchronous rectification, output circuit connect with wireless charging circuit.
A kind of portable power source, including the synchronous rectification wireless charging control circuit.
Specifically, portable power source described in the utility model includes shell, Wireless charging coil, battery, input interface, output
Interface and circuit board, the synchronous rectification wireless charging control circuit are arranged on the circuit board, the Wireless charging coil,
Battery is connected with the synchronous rectification wireless charging control circuit respectively.
Specifically, battery described in the utility model is lithium battery.
Specifically, input interface described in the utility model is Micro interfaces, the output interface is USB interface.
Synchronous rectification wireless charging control circuit provided by the utility model and portable power source compared with prior art, have
Have the advantage that：
1st, wireless charging can be achieved and limited charging combines, wireless or limited charge mode may be selected in user, easy to use.
2nd, using synchronous rectification charge and discharge mode circuit realiration wireless charging, charging rate is fast, and stability is good.
Brief description of the drawings
The utility model embodiment is described further referring to the drawings, wherein：
Fig. 1 is a kind of circuit structure diagram of synchronous rectification wireless charging control circuit of the utility model；
Fig. 2 is a kind of partial circuit diagram of synchronous rectification wireless charging control circuit of the utility model；
Fig. 3 is a kind of circuit diagram of the governor circuit of synchronous rectification wireless charging control circuit of the utility model；
Fig. 4 is a kind of circuit diagram of the battery protecting circuit of synchronous rectification wireless charging control circuit of the utility model；
Fig. 5 is a kind of circuit diagram of the wireless charging circuit of synchronous rectification wireless charging control circuit of the utility model；
Fig. 6 is a kind of shape assumption diagram of portable power source of the utility model.
Embodiment
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
The utility model proposes a kind of synchronous rectification wireless charging control circuit, referring to Fig. 1, the synchronous rectification without
Micro USB electric control circuit includes input control circuit, circuit of synchronous rectification, governor circuit, output circuit, wireless charging circuit, electricity
Pond protection circuit, the input control circuit, circuit of synchronous rectification, output circuit, wireless charging circuit respectively with the master control
Circuit connects, the input connection charge power supply of the input control circuit, the output end connection institute of the input control circuit
Circuit of synchronous rectification is stated, the output end of the circuit of synchronous rectification is connected with the output circuit, and the circuit of synchronous rectification is also
It is connected with the battery protecting circuit, the wireless charging circuit connects the output circuit and governor circuit.
Specifically, the synchronous rectification wireless charging control circuit also includes the display electricity being connected with the governor circuit
Road.
Specifically, referring to Fig. 2-Fig. 5, the input control circuit includes charging inlet, first resistor R15, the second electricity
Hinder R22, the first test point Vin test, the first transistor Q4 and second transistor Q5, the first resistor R15 and second resistance
R22 connects, and first resistor R15 and second resistance R22 junction is provided with the first test point Vin test, first test point
Vin test are connected with the governor circuit, and the first transistor Q4 and second transistor Q5 are in parallel.The synchronous rectification electricity
Road includes the first inductance L1, the first controller Q1, second controller Q2, the first pwm circuit PWM1 and the second pwm circuit PWM2,
The first controller Q1 is connected with the first pwm circuit, and second controller Q2 is connected with the second pwm circuit.
Specifically, the wireless charging circuit uses chip model as CV90312T.The governor circuit includes single-chip microcomputer
Chip, the singlechip chip respectively with the input control circuit, circuit of synchronous rectification, output circuit and wireless charging circuit
Connection.
The utility model is using single-chip microcomputer is three-in-one, two-way PWM waveform synchronous rectification decompression is charged and synchronous rectified boost
Electric discharge, i.e. synchronous rectification decompression charging, synchronous rectified boost discharge mode, single-chip microcomputer battery electric quantity management circuit, its work side
Formula and process are as follows：
Charge working method：When it is high level that governor circuit, which detects the first test point Vin test, governor circuit will
Chr mouths are set to low level, the first transistor Q4, second transistor Q5 conducting, and electric current flows through sampling resistor R11 and R11a, simultaneously
PWM1, PWM2 start；Q1, Q2 and L1 form synchronous rectification reduction voltage circuit；Input 5V voltages are dropped by PWM1 and PWM2 adjustment
Charged the battery after pressure, governor circuit adjusted according to the change that Vin test and VCC voltage differences and BV mouths voltage become PWM1 with
The pulsewidth of PWM2 waveforms, adjust charging current and charging voltage；Schottky is replaced with Q1, Q1 metal-oxide-semiconductors are driven using PWM2, made
Q1 is in 0 pressure drop conducting, does not produce voltage drop, so as to improving efficiency.
Boosting working method：PWM1, PWM2 start when pushing button；Q1, Q2, L1 form synchronous rectified boost circuit；Will
Cell voltage rises to 5V outputs, and governor circuit adjusts PWM1 and PWM2 the waveforms stable 5V of pulsewidth according to the change of VCC voltages
Output voltage, judge that output current is small according to the sampling number of the second test point Test1 pin change, when Test1 voltage signals are big
PWM1 and PWM2 is interrupted when setting value, simultaneously turns off Q3.Schottky is replaced with Q1, Q1 metal-oxide-semiconductors are driven using PWM2, make Q1
Turned in 0 pressure drop, do not produce voltage drop, so as to improving efficiency.
When synchronous rectification wireless charging control circuit provided by the utility model charges to portable power source, without needing to charge
IC, the circuit of synchronous rectification being made up of Q1, Q2, L1 are completed；When boosting is externally discharged, it is not required that boosting IC, by Q1, Q2, L1
The circuit of synchronous rectification of composition is completed；During using wirelessly being charged to mobile phone, it is not necessary to connect power line, it is only necessary to by mobile phone
Being placed in product front appearance to charge the phone, and charge efficiency is high so that charging rate is fast；Charging process is stable simultaneously.
Based on above synchronous rectification wireless charging control circuit, the utility model also provides a kind of portable power source, the shifting
Dynamic power supply includes the synchronous rectification wireless charging control circuit.
Specifically, referring to Fig. 6, the portable power source includes shell 601, Wireless charging coil 602, battery 603, input
Interface 604, output interface 605 and circuit board 606, the synchronous rectification wireless charging control circuit are arranged on the circuit board
On 606, the Wireless charging coil 602, battery 603 are connected with the synchronous rectification wireless charging control circuit respectively.
Specifically, the battery 603 is lithium battery.Poly-lithium battery can be specifically used, battery capacity is big, stability
It is good.
Specifically, shell 601 use PC materials, characteristic be hardness height, it is resistance to fall it is wear-resisting, can substantially reduce user imprudence fall
The probability of broken shell, extend the service life of product.
Specifically, the input interface is Micro interfaces, the output interface is USB interface.It is defeated provided with 2 USB chargings
Outgoing interface, 1 wireless charging output face, it can be charged simultaneously for 3 mobile phones or flat board, solve more people's charge requirements.
Specifically, using synchronous rectification wireless charging control circuit provided by the utility model, electric current when USB single port exports
Up to 5V 2.4A, up to 5V 3.1A two USB ports export simultaneously when, wireless charging output is 5V 1A.So it is mobile phone plane plate
The speed of charging is fast, shortens charging duration.
Specifically, portable power source of the present utility model carries a digital display tube 607, product current residual can be prompted
Electricity, 0 to 100 electricity is very clear, when electricity is shown it is low when, client can in time for this product charge.Avoid emergent charging
When demand occurs, the awkward situation of the true out of power of portable power source.
The function of both portable power source provided by the utility model and wireless charger is integrated into one, easy to use.Visitor
Family can select, by charging wire, to connect product and mobile phone, flat board, can be straight if mobile phone, flat board are furnished with wireless receiving function
Wireless charging was connected, breaks away from the worry of wired charging, charging rate is fast, reliable and stable.
Specific embodiment of the present utility model described above, the restriction to scope of protection of the utility model is not formed.
Any various other corresponding changes and deformation made according to technical concept of the present utility model, should be included in this practicality
In new scope of the claims.
Claims (10)
- A kind of 1. synchronous rectification wireless charging control circuit, it is characterised in that the synchronous rectification wireless charging control circuit bag Input control circuit, circuit of synchronous rectification, governor circuit, output circuit, wireless charging circuit, battery protecting circuit are included, it is described Input control circuit, circuit of synchronous rectification, output circuit, wireless charging circuit are connected with the governor circuit respectively, described defeated Entering the input connection charge power supply of control circuit, the output end of the input control circuit connects the circuit of synchronous rectification, The output end of the circuit of synchronous rectification is connected with the output circuit, and the circuit of synchronous rectification is also electric with the battery protection Road connects, and the wireless charging circuit connects the output circuit and governor circuit.
- A kind of 2. synchronous rectification wireless charging control circuit according to claim 1, it is characterised in that the synchronous rectification Wireless charging control circuit also includes the display circuit being connected with the governor circuit.
- A kind of 3. synchronous rectification wireless charging control circuit according to claim 1, it is characterised in that the input control Circuit includes charging inlet, first resistor, second resistance, the first test point, the first transistor and second transistor, and described first Resistance is connected with second resistance, and the junction of first resistor and second resistance is provided with the first test point, first test point with The governor circuit connection, the first transistor and second transistor are in parallel.
- A kind of 4. synchronous rectification wireless charging control circuit according to claim 1, it is characterised in that the synchronous rectification Circuit includes the first inductance, the first controller, second controller, the first pwm circuit and the second pwm circuit, first control Device is connected with the first pwm circuit, and second controller is connected with the second pwm circuit.
- A kind of 5. synchronous rectification wireless charging control circuit according to claim 1, it is characterised in that the wireless charging Circuit uses chip model as CV90312T.
- A kind of 6. synchronous rectification wireless charging control circuit according to claim 1, it is characterised in that the governor circuit Including singlechip chip, the singlechip chip respectively with the input control circuit, circuit of synchronous rectification, output circuit and nothing Line charging circuit connects.
- 7. a kind of portable power source, it is characterised in that including the synchronous rectification wireless charging described in any one of claim 1-6 Control circuit.
- 8. a kind of portable power source according to claim 7, it is characterised in that the portable power source includes shell, wireless charging Electric coil, battery, input interface, output interface and circuit board, the synchronous rectification wireless charging control circuit are arranged on described On circuit board, the Wireless charging coil, battery are connected with the synchronous rectification wireless charging control circuit respectively.
- 9. a kind of portable power source according to claim 8, it is characterised in that the battery is lithium battery.
- 10. a kind of portable power source according to claim 7, it is characterised in that the input interface is Micro interfaces, institute It is USB interface to state output interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720671751.5U CN206992733U (en) | 2017-06-09 | 2017-06-09 | A kind of synchronous rectification wireless charging control circuit and portable power source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720671751.5U CN206992733U (en) | 2017-06-09 | 2017-06-09 | A kind of synchronous rectification wireless charging control circuit and portable power source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206992733U true CN206992733U (en) | 2018-02-09 |
Family
ID=61395103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720671751.5U Expired - Fee Related CN206992733U (en) | 2017-06-09 | 2017-06-09 | A kind of synchronous rectification wireless charging control circuit and portable power source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206992733U (en) |
-
2017
- 2017-06-09 CN CN201720671751.5U patent/CN206992733U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180209 Termination date: 20210609 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |