CN206878491U - A kind of charger for mobile phone based on intelligence switching charge mode - Google Patents
A kind of charger for mobile phone based on intelligence switching charge mode Download PDFInfo
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- CN206878491U CN206878491U CN201720465369.9U CN201720465369U CN206878491U CN 206878491 U CN206878491 U CN 206878491U CN 201720465369 U CN201720465369 U CN 201720465369U CN 206878491 U CN206878491 U CN 206878491U
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Abstract
The utility model is a kind of based on the intelligent charger for mobile phone for switching charge mode come what is built as core using single-chip microcomputer and charging chip.System hardware module is made up of single chip control module, voltage transformation module and optical coupling isolation circuit module, charge control module.Voltage conversion circuit is converted to 220V alternating current the voltage suitable for cell phone charging circuit, signal is amplified and passed to single chip machine controlling circuit via photoelectric coupled circuit, under the collective effect of charging chip and external microcontroller circuit, the charging processes such as preliminary filling, fast charge, Man Chong, power-off, alarm are realized.Single-chip microcomputer controls output control optocoupler, can turn off charge power supply in time when needing.Simultaneously single-chip microcomputer control buzzer working condition, be full of and overcharging state under buzzer warning, remind user take out battery in time.
Description
Technical field
The utility model belongs to single-chip microcomputer control field, more particularly to a kind of mobile phone based on intelligence switching charge mode fills
Electrical equipment.
Background technology
The invention of great significance in history is communicated as the mankind, the development of mobile phone has gone through more than ten of year.And smart mobile phone
Fast development, it may be said that be a very important milestone in mobile phone development course.Smart mobile phone can not only be realized
Short message, the function of call, it is often more important that smart mobile phone can realize the demand that user surfs the Net whenever and wherever possible, realize more intelligence
The application of change.The fast development of smart mobile phone promotes the update of battery technology.Wherein lithium ion battery is close with high-energy
The characteristics such as degree, high internal resistance, high cell voltage, high circulation number, low self-discharge rate, show one's talent, dominate the market.
And can not have today of the change of matter in the short time in battery technology, pursue more efficient more easily charging modes into
The core pursued for present electronic market.The charger of generally existing on the market, frequently with constant current charging mode, cause to cause
Lithium battery overcharges and causes a series of danger.Jerry presence, allows discharge equipment quality difference appended by charger, easily
Battery is caused to overheat, the life-span of battery over-discharge and leaky, not only infringement battery, and can harmful to human.
Therefore, a really by the control of micro computer control single-chip microcomputer, and cheap intelligent control charger is designed,
Become the direction that each producer makes great efforts.
Utility model content
The purpose of this utility model is to provide a kind of charger for mobile phone of intelligence switching charge mode, it is intended to solves existing
Overcharged existing for charger and heating problem, protect battery, improve the service life of battery, it is green.
The technical solution of the utility model is as follows：
A kind of charger for mobile phone based on intelligence switching charge mode, including：Power module, voltage stabilizing modular converter, optocoupler
Isolation circuit module, charge control module, single chip control module and buzzer；The input of wherein described voltage stabilizing modular converter
End connection power module, output end connect the optical coupling isolation circuit module, and the output end of the optical coupling isolation circuit module connects
Charge control module and single chip control module are connect, the output end connection optocoupler control module of the single chip control module, is filled
Electric control module and buzzer, the output end connection rechargeable battery of the charge control module.
Further according to the charger for mobile phone described in the utility model for switching charge mode based on intelligence, the single-chip microcomputer
The core devices of control module are AT89C51 chips；The control of pin 3 of the AT89C51 chips sends alarm sound, pin 3 with
Resistance R2 one end is connected, the pin 1 of resistance R2 another termination buzzer, the pin 2 of buzzer and the charge control mould
The pin 4 of 74LS04 chips in block is connected；The pin 9 of the AT89C51 chips and electric capacity C3 negative pole, switch the one of S1
End and resistance R1 one end are connected, and electric capacity C3 positive pole is connect after the voltage stabilizing conversion and the conversion of optical coupling isolation circuit module
5V power supplys by isolation, switch S1 the other end also connect by the voltage stabilizing conversion and optical coupling isolation circuit module conversion after pass through
Cross the 5V power supplys of isolation, resistance R1 other end ground connection；In the pin 12 of the AT89C51 chips and the charge control module
74LS04 chips pin 2 be connected；The pin 18 of the AT89C51 chips connects crystal oscillator Y1 one end and electric capacity C1 one end,
The electric capacity C1 other ends are grounded；Pin 19 connects the crystal oscillator Y1 other end and electric capacity C2 one end, electric capacity C2 other end ground connection；Draw
Pin 20 is grounded；The pin 21 of the AT89C51 chips and the 6N137 chips in the voltage stabilizing conversion and optical coupling isolation circuit module
Pin 2 be connected, control optocoupler, charge power supply can be turned off in time when needing；The AT89C51 chips draw
Pin 22 is connected with the pin 3 of the 74LS04 chips in the charge control module；The pin 31 of the AT89C51 chips connect through
Cross the 5V power supplys by isolation after the voltage stabilizing conversion and the conversion of optical coupling isolation circuit module；The pin of the AT89C51 chips
40 are connected with after electric capacity C4 and the voltage stabilizing conversion and the conversion of optical coupling isolation circuit module by the 5V power supplys isolated, electric capacity C4's
The other end is grounded.
Further turned according to the charger for mobile phone described in the utility model for switching charge mode based on intelligence, the voltage stabilizing
The core devices for changing the mold block are LM7805 chips, and the core devices that optical coupling isolation circuit module uses are 6N137 chips；It is described
The pin 1 of LM7805 chips connects 12V power supplys that are converted and coming, and electric capacity C5 one end, electric capacity C5 another termination
Ground；The pin 2 of the LM7805 chips is grounded；The pin 3 of the LM7805 chips by the 5V control sources obtained after conversion to
Optical coupling isolation circuit, the pin 3 of the LM7805 chips meet the pin 8 of the 6N137 chips and electric capacity C6 one end, electric capacity C6
The other end ground connection；The pin 2 of the 6N137 chips draws with the AT89C51 chips described in the single chip control module
Pin 21 is connected；The pin 4 of the 6N137 chips is grounded；Pin 5 connects electric capacity C8 one end, electric capacity C8 other end ground connection；It is described
5V power supply of the output of pin 6 of 6N137 chips by isolation；The pin 8 of the 6N137 chips connects the LM7805 chips
One end of pin 3 and electric capacity C7, electric capacity C7 other end ground connection.
Further according to the charger for mobile phone described in the utility model for switching charge mode based on intelligence, the charging control
The core devices of molding block are MAX1898 chips；By isolation after the voltage stabilizing conversion and the conversion of optical coupling isolation circuit module
5V power supplys are connected with red light emitting diodes D2 positive pole, and red light emitting diodes D2 negative pole is connected with resistance R3 one end,
Resistance R3 other end ground connection, red light emitting diodes D2 is luminous to represent power on；The pin 1 of the MAX1898 chips with
One end of 5V power supplys, electric capacity C9 after the voltage stabilizing conversion and the conversion of optical coupling isolation circuit module by isolation, green hair
Optical diode D1 positive pole is connected with electric capacity C10 one end, electric capacity C9 other end ground connection, the electric capacity C10 other end and three poles
Pipe Q1 base stage is connected；The pin 2 of the MAX1898 chips is connected with green LED D1 negative pole, green emitting two
Pole pipe D1 is luminous to be represented to be in charged state, and green LED D1, which extinguishes, represents that electricity has been filled with, and pin 2 and 74LS04
The pin 1 of chip is connected；The pin 4 of the MAX1898 chips is connected with resistance R4 one end, resistance R4 other end ground connection；
In interruption, if it is judged that charging finishes, then single-chip microcomputer will control optocoupler 6N137 by pin 21, cut off LM7805 chips
Power supply to MAXl898 chips, so as to ensure the safety of chip and battery, while also reduce power consumption；After battery is full of,
MAXl898 chips can extinguish external LED green lights in itself；But for the sake of security, single-chip microcomputer is detecting full state
After pulse, the power supply of MAXl898 chips can be not only automatically cut off, and by buzzer warning user can be reminded to take out in time
Battery, when charging malfunctions, MAXl898 chips can control LED green lights now should not with 1.5Hz or so frequency scintillation in itself
The power supply of chip is cut off, to allow user to see this prompting always；One end phase of the MAX1898 chip pins 5 and electric capacity C11
Even, electric capacity C11 other end ground connection；Pin 6 is grounded；Pin 7 and electric capacity C12 positive pole, diode D3 negative pole and charging electricity
Pond is connected, and electric capacity C12 negative pole ground connection, diode D3 positive pole is connected with triode Q1 colelctor electrode；Pin 8 is grounded；Pin
9 connect triode Q1 base stage；Pin 10 is connected with triode Q1 emitter stage；The pin 2 of the 74LS04 chips and the list
The pin 12 of AT89C51 chips in piece machine control module is connected, and triggers external interrupt；The pin 3 of 74LS04 chips with it is described
The pin 22 of AT89C51 chips in single chip control module is connected；The phase of pin 2 of the pin 4 of 74LS04 chips and buzzer
Even；The pin 7 of 74LS04 chips is grounded；The pin 14 of 74LS04 chips is connect through the voltage stabilizing conversion and optical coupling isolation circuit module
5V power supplys after conversion by isolation, chip J1 pin 1 are grounded, and pin 2 connects rechargeable battery.
Further according to the charger for mobile phone described in the utility model for switching charge mode based on intelligence, the power supply mould
Block, 220V household electricities are being converted to 12V, diode VD1 negative pole and VD2 positive pole and diode VD3 just by transformer
Extremely it is connected, diode VD4 positive pole is connected with the negative pole of diode VD3 negative pole and diode VD2, forms bridge rectifier electricity
Road；One end of 12V voltages is connected with diode VD1 negative pole and diode VD2 positive pole, and the other end is negative with diode VD3's
Pole is connected with diode VD4 positive pole；Electric capacity C13 negative pole is connected with diode VD1 positive pole and diode VD3 positive pole,
Electric capacity C13 positive pole is connected with diode VD2 negative pole and diode VD4 negative pole；Electric capacity C13 positive pole is with electric capacity C14's
The input of one end and LM7805 chips is connected, electric capacity C14 other end ground connection；The GND ends ground connection of LM7805 chips,
The Vout termination capacitors C15 positive pole of LM7805 chips and electric capacity C16 one end, and 5V voltages are exported, electric capacity C15 negative pole
Ground connection, electric capacity C16 other end ground connection.
Compared with present technology, its advantage is the utility model：
1. the utility model is had using charging chip and single-chip microcomputer co- controlling to carry out safety to single-unit lithium ion battery
The fast charge of effect, its maximum feature are to remain to accomplish that the effect of very low dissipates in the case of without using inductance, it is possible to achieve preliminary filling
Electricity, there is overvoltage protection and temperature protection function, the most long charging interval is limited to lithium ion battery and provides second protection.
2. the utility model has battery voltage detection function.Special charging chip possesses Δ V detection modes, Ke Yijian
The voltage change signal sent during battery charging saturation is measured, relatively accurately complete charge works.By single-chip microcomputer to these
The control of chip, it is possible to achieve the intellectuality of charging process, shorten the time of charging, while battery can be safeguarded, extend battery
Service life.
Brief description of the drawings
Fig. 1 is system designs block diagram of the present utility model；
Fig. 2 is single chip control module of the present utility model；
Fig. 3 is voltage stabilizing modular converter of the present utility model and optical coupling isolation circuit module；
Fig. 4 is charge control module of the present utility model；
Fig. 5 is power module of the present utility model.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing, to this reality
It is further elaborated with new.It should be appreciated that specific embodiment described herein is only to explain the utility model,
It is not used to limit the utility model.
As shown in figure 1, the utility model includes power module, voltage stabilizing modular converter, optical coupling isolation circuit module, charging control
Molding block, single chip control module and buzzer.The input connection power module of wherein described voltage stabilizing modular converter, output
End connects the optical coupling isolation circuit module, the output end connection charge control module and monolithic of the optical coupling isolation circuit module
Machine control module, output end connection optocoupler control module, charge control module and the buzzer of the single chip control module
Deng warning device, the output end connection rechargeable battery of the charge control module.
As shown in Fig. 2 the core devices for the single chip control module that the utility model is selected are AT89C51 chips.It is described
The control of pin 3 of AT89C51 chips sends alarm sound, and pin 3 is connected with resistance R2 one end, resistance R2 another termination buzzing
The pin 1 of device, the pin 2 of buzzer are connected with the pin 4 of the 74LS04 chips in the charge control module；It is described
The pin 9 of AT89C51 chips and electric capacity C3 negative pole, switch S1 one end and resistance R1 one end and are connected, electric capacity C3 is just
5V power supply of the pole after the voltage stabilizing conversion and the conversion of optical coupling isolation circuit module by isolation, the other end for switching S1 also connect
5V power supplys after the voltage stabilizing conversion and the conversion of optical coupling isolation circuit module by isolation, resistance R1 other end ground connection；
The pin 12 of the AT89C51 chips is connected with the pin 2 of the 74LS04 chips in the charge control module；It is described
The pin 18 of AT89C51 chips connects crystal oscillator Y1 one end and electric capacity C1 one end, C1 other ends ground connection；Pin 19 connects crystal oscillator Y1's
One end of the other end and electric capacity C2, C2 other end ground connection；Pin 20 is grounded；The pin 21 of the AT89C51 chips with it is described
The pin 2 of 6N137 chips in voltage stabilizing conversion and optical coupling isolation circuit module is connected, and optocoupler is controlled, when needing
Charge power supply can be turned off in time；The pin 22 of the AT89C51 chips and the 74LS04 chips in the charge control module
Pin 3 be connected；The pin 31 of the AT89C51 chips connects to pass through after the voltage stabilizing conversion and the conversion of optical coupling isolation circuit module
Cross the 5V power supplys of isolation；The pin 40 of the AT89C51 chips and electric capacity C4 and the voltage stabilizing conversion and optical coupling isolation circuit mould
5V power supplys after block conversion by isolation are connected, C4 other end ground connection.
As shown in figure 3, the core devices of voltage stabilizing modular converter of the present utility model are LM7805 chips, optical coupling isolation circuit
The core devices that module uses are 6N137 chips.The pin 1 of the LM7805 chips connects 12V power supplys that are converted and coming, with
And electric capacity C5 one end, C5 other end ground connection；The pin 2 of the LM7805 chips is grounded；The pin 3 of the LM7805 chips
The 5V control sources obtained after conversion are connect into the 6N137 chips to optical coupling isolation circuit, the pin 3 of the LM7805 chips
One end of pin 8 and electric capacity C6, C6 other end ground connection.In the pin 2 of the 6N137 chips and the single chip control module
The pin 21 of described AT89C51 chips is connected；The pin 4 of the 6N137 chips is grounded；Pin 5 meets electric capacity C8 one end, C8
The other end ground connection；5V power supply of the output of pin 6 of the 6N137 chips by isolation, to other module for power supply；It is described
The pin 8 of 6N137 chips connects the pin 3 of the LM7805 chips and electric capacity C7 one end, C7 other end ground connection.
As shown in figure 4, the core devices of charge control module of the present utility model are MAX1898 chips.The voltage stabilizing turns
Change and the conversion of optical coupling isolation circuit module after 5V power supplys by isolation be connected with red light emitting diodes D2 positive pole, D2's bears
Pole is connected with resistance R3 one end, and R3 other end ground connection, D2 is luminous to represent power on；The pin 1 of the MAX1898 chips
With by the voltage stabilizing conversion and optical coupling isolation circuit module conversion after through isolation 5V power supplys, electric capacity C9 one end, green
Light emitting diode D1 positive pole is connected with electric capacity C10 one end, electric capacity C9 other end ground connection, the electric capacity C10 other end and three
Pole pipe Q1 base stage is connected；The pin 2 of the MAX1898 chips is connected with green LED D1 negative pole, and D1 lights table
Show and be in charged state, D1, which extinguishes, represents that electricity has been filled with, and pin 2 is connected with the pin 1 of 74LS04 chips；The MAX1898
The pin 4 of chip is connected with resistance R4 one end, R4 other end ground connection；In interruption, if it is judged that charging finishes, then it is single
Piece machine will control optocoupler 6N137 by pin 21, cut off power supplies of the LM7805 to MAXl898, so as to ensure chip and battery
Safety, while also reduce power consumption.After battery is full of, MAXl898 chips can extinguish external LED green lights in itself.But in order to
For the sake of safety, single-chip microcomputer can not only automatically cut off the power supply of MAXl898 chips after the pulse of full state is detected, and
By buzzer warning user can be reminded to take out battery in time.When charging malfunctions, MAXl898 chips can control LED green in itself
Lamp not cut off the power supply of chip now, be seen this prompting always by be allowed user with 1.5Hz or so frequency scintillation.It is described
MAX1898 chip pins 5 are connected with electric capacity C11 one end, C11 other end ground connection；Pin 6 is grounded；Pin 7 and electric capacity C12
Positive pole, diode D3 negative pole be connected with rechargeable battery, electric capacity C12 negative pole ground connection, diode D3 positive pole and triode
Q1 colelctor electrode is connected；Pin 8 is grounded；Pin 9 connects triode Q1 base stage；Pin 10 is connected with triode Q1 emitter stage.
The pin 2 of the 74LS04 chips is connected with the pin 12 of the AT89C51 chips in the single chip control module, and triggering is outside
Interrupt；The pin 3 of 74LS04 chips is connected with the pin 22 of the AT89C51 chips in the single chip control module；74LS04
The pin 4 of chip is connected with the pin 2 of buzzer；The pin 7 of 74LS04 chips is grounded；The pin 14 of 74LS04 chips is connect through institute
State 5V power supplys by isolation after voltage stabilizing conversion and the conversion of optical coupling isolation circuit module.The pin 1 of J1 chips is grounded；Pin 2 connects
Rechargeable battery.
Further, the model positive-negative-positive 9012 of the triode Q1 used in charge control module of the present utility model is managed.
Fig. 5 is power module of the present utility model.220V household electricities are converted to 12V by transformer, diode VD1's
Negative pole is connected with VD2 positive pole and diode VD3 positive pole, diode VD4 positive pole and diode VD3 negative pole and diode
VD2 negative pole is connected, and forms bridge rectifier；One end of 12V voltages and diode VD1 negative pole and diode VD2 are just
Extremely it is connected, the other end is connected with diode VD3 negative pole and diode VD4 positive pole；Electric capacity C13 negative pole and diode VD1
Positive pole be connected with diode VD3 positive pole, the negative pole phase of electric capacity C13 positive pole and diode VD2 negative pole and diode VD4
Even；Electric capacity C13 positive pole is connected with electric capacity C14 one end and the input of LM7805 chips, electric capacity C14 another termination
Ground；The GND ends ground connection of LM7805 chips, the Vout termination capacitors C15 positive pole of LM7805 chips and electric capacity C16 one end, and
Export 5V voltages, electric capacity C15 negative pole ground connection, electric capacity C16 other end ground connection.
The utility model is using AT89C51 system chip and charging chip MAX1898 as core, passes through Power convert mould
220V alternating current is converted to 12V voltages by block, then is converted to 5V voltages by voltage stabilizing, and signal is isolated via photoelectric coupled circuit to be amplified
And single chip machine controlling circuit and charging control circuit are passed to, under the collective effect of charging chip and external microcontroller circuit,
Realize the charging processes such as preliminary filling, fast charge, Man Chong, power-off, alarm.Single-chip microcomputer control optocoupler device, when needing can and
When turn off charge power supply.Simultaneously single-chip microcomputer control buzzer working condition, be full of and overcharging state under buzzer warning,
User is reminded to take out battery in time.
It the above is only and preferred embodiment of the present utility model is described, not by technical side of the present utility model
Case limited to this, any known deformation that those skilled in the art are made on the basis of major technique of the present utility model design all belong to
In the claimed technology category of the utility model, the specific protection domain of the utility model is recited as with claims
It is accurate.
Claims (5)
- A kind of 1. charger for mobile phone based on intelligence switching charge mode, it is characterised in that including：Power module, voltage stabilizing conversion Module, optical coupling isolation circuit module, charge control module, single chip control module and buzzer；Wherein described voltage stabilizing conversion The input connection power module of module, output end connect the optical coupling isolation circuit module, the optical coupling isolation circuit module Output end connection charge control module and single chip control module, the output end connection optocoupler control of the single chip control module Molding block, charge control module and buzzer, the output end connection rechargeable battery of the charge control module.
- 2. the charger for mobile phone according to claim 1 based on intelligence switching charge mode, it is characterised in that the monolithic The core devices of machine control module are AT89C51 chips；The control of pin 3 of the AT89C51 chips sends alarm sound, pin 3 It is connected with resistance R2 one end, the pin 1 of resistance R2 another termination buzzer, pin 2 and the charge control of buzzer The pin 4 of 74LS04 chips in module is connected；The pin 9 of the AT89C51 chips and electric capacity C3 negative pole, switch the one of S1 End and resistance R1 one end are connected, and electric capacity C3 positive pole is connect after the voltage stabilizing conversion and the conversion of optical coupling isolation circuit module 5V power supplys by isolation, switch S1 the other end also connect by the voltage stabilizing conversion and optical coupling isolation circuit module conversion after pass through Cross the 5V power supplys of isolation, resistance R1 other end ground connection；In the pin 12 of the AT89C51 chips and the charge control module 74LS04 chips pin 2 be connected；The pin 18 of the AT89C51 chips connects crystal oscillator Y1 one end and electric capacity C1 one end, The electric capacity C1 other ends are grounded；Pin 19 connects the crystal oscillator Y1 other end and electric capacity C2 one end, electric capacity C2 other end ground connection；Pin 20 ground connection；The pin 21 of the AT89C51 chips and the voltage stabilizing conversion and the 6N137 chips in optical coupling isolation circuit module Pin 2 is connected, and controls optocoupler, can turn off charge power supply in time when needing；The pin of the AT89C51 chips 22 are connected with the pin 3 of the 74LS04 chips in the charge control module；The pin 31 of the AT89C51 chips is connect by institute State 5V power supplys by isolation after voltage stabilizing conversion and the conversion of optical coupling isolation circuit module；The pin 40 of the AT89C51 chips with Electric capacity C4 is connected with the 5V power supplys after the voltage stabilizing conversion and the conversion of optical coupling isolation circuit module by isolation, and electric capacity C4's is another End ground connection.
- 3. the charger for mobile phone according to claim 2 based on intelligence switching charge mode, it is characterised in that the voltage stabilizing The core devices of modular converter are LM7805 chips, and the core devices that optical coupling isolation circuit module uses are 6N137 chips；It is described The pin 1 of LM7805 chips connects 12V power supplys that are converted and coming, and electric capacity C5 one end, electric capacity C5 other end ground connection； The pin 2 of the LM7805 chips is grounded；The pin 3 of the LM7805 chips is by the 5V control sources obtained after conversion to optocoupler Isolation circuit, the pin 3 of the LM7805 chips connect the pin 8 of the 6N137 chips and electric capacity C6 one end, and electric capacity C6's is another One end is grounded；The pin 21 of the pin 2 of the 6N137 chips and the AT89C51 chips described in the single chip control module It is connected；The pin 4 of the 6N137 chips is grounded；Pin 5 connects electric capacity C8 one end, electric capacity C8 other end ground connection；It is described 5V power supply of the output of pin 6 of 6N137 chips by isolation；The pin 8 of the 6N137 chips connects drawing for the LM7805 chips One end of pin 3 and electric capacity C7, electric capacity C7 other end ground connection.
- 4. the charger for mobile phone according to claim 1 based on intelligence switching charge mode, it is characterised in that the charging The core devices of control module are MAX1898 chips；By isolation after the voltage stabilizing conversion and the conversion of optical coupling isolation circuit module 5V power supplys be connected with red light emitting diodes D2 positive pole, red light emitting diodes D2 negative pole and resistance R3 one end phase Even, resistance R3 other end ground connection, red light emitting diodes D2 is luminous to represent power on；The pin 1 of the MAX1898 chips With by the voltage stabilizing conversion and optical coupling isolation circuit module conversion after through isolation 5V power supplys, electric capacity C9 one end, green Light emitting diode D1 positive pole is connected with electric capacity C10 one end, electric capacity C9 other end ground connection, the electric capacity C10 other end and three Pole pipe Q1 base stage is connected；The pin 2 of the MAX1898 chips is connected with green LED D1 negative pole, green emitting Diode D1 is luminous to be represented to be in charged state, and green LED D1, which extinguishes, represents that electricity has been filled with, and pin 2 and 74LS04 The pin 1 of chip is connected；The pin 4 of the MAX1898 chips is connected with resistance R4 one end, resistance R4 other end ground connection； In interruption, if it is judged that charging finishes, then single-chip microcomputer will control optocoupler 6N137 by pin 21, cut off LM7805 chips Power supply to MAXl898 chips, so as to ensure the safety of chip and battery, while also reduce power consumption；After battery is full of, MAXl898 chips can extinguish external LED green lights in itself；But for the sake of security, single-chip microcomputer is detecting full state After pulse, the power supply of MAXl898 chips can be not only automatically cut off, and by buzzer warning user can be reminded to take out in time Battery, when charging malfunctions, MAXl898 chips can control LED green lights now should not with 1.5Hz or so frequency scintillation in itself The power supply of chip is cut off, to allow user to see this prompting always；One end phase of the MAX1898 chip pins 5 and electric capacity C11 Even, electric capacity C11 other end ground connection；Pin 6 is grounded；Pin 7 and electric capacity C12 positive pole, diode D3 negative pole and charging electricity Pond is connected, and electric capacity C12 negative pole ground connection, diode D3 positive pole is connected with triode Q1 colelctor electrode；Pin 8 is grounded；Pin 9 Connect triode Q1 base stage；Pin 10 is connected with triode Q1 emitter stage；The pin 2 of the 74LS04 chips and the monolithic The pin 12 of AT89C51 chips in machine control module is connected, and triggers external interrupt；The pin 3 of 74LS04 chips and the list The pin 22 of AT89C51 chips in piece machine control module is connected；The pin 4 of 74LS04 chips is connected with the pin 2 of buzzer； The pin 7 of 74LS04 chips is grounded；The pin 14 of 74LS04 chips is connect by the voltage stabilizing conversion and optical coupling isolation circuit module 5V power supplys after conversion by isolation, the pin 1 of J1 chips are grounded, and pin 2 connects rechargeable battery.
- 5. the charger for mobile phone according to claim 1 based on intelligence switching charge mode, it is characterised in that the power supply Module, 220V household electricities are converted to 12V, diode VD1 negative pole and VD2 positive pole and diode VD3 by transformer Positive pole is connected, and diode VD4 positive pole is connected with the negative pole of diode VD3 negative pole and diode VD2, forms bridge rectifier electricity Road；One end of 12V voltages is connected with diode VD1 negative pole and diode VD2 positive pole, and the other end is negative with diode VD3's Pole is connected with diode VD4 positive pole；Electric capacity C13 negative pole is connected with diode VD1 positive pole and diode VD3 positive pole, Electric capacity C13 positive pole is connected with diode VD2 negative pole and diode VD4 negative pole；Electric capacity C13 positive pole is with electric capacity C14's The input of one end and LM7805 chips is connected, electric capacity C14 other end ground connection；The GND ends ground connection of LM7805 chips, The Vout termination capacitors C15 positive pole of LM7805 chips and electric capacity C16 one end, and 5V voltages are exported, electric capacity C15 negative pole connects Ground, electric capacity C16 other end ground connection.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109617200A (en) * | 2018-10-25 | 2019-04-12 | 张家港市华为电子有限公司 | A kind of intelligent modularized charger |
| CN110171314A (en) * | 2019-05-14 | 2019-08-27 | 绍兴上虞元彬自动化有限公司 | One kind, which is filled, takes integral and intelligent charging cabinet |
| CN112904236A (en) * | 2021-03-23 | 2021-06-04 | 兰州资源环境职业技术学院 | Overhead line short circuit grounding fault detection sensor |
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2017
- 2017-04-28 CN CN201720465369.9U patent/CN206878491U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109617200A (en) * | 2018-10-25 | 2019-04-12 | 张家港市华为电子有限公司 | A kind of intelligent modularized charger |
| CN110171314A (en) * | 2019-05-14 | 2019-08-27 | 绍兴上虞元彬自动化有限公司 | One kind, which is filled, takes integral and intelligent charging cabinet |
| CN112904236A (en) * | 2021-03-23 | 2021-06-04 | 兰州资源环境职业技术学院 | Overhead line short circuit grounding fault detection sensor |
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