CN205104965U - Energy -conserving charger based on control of cell -phone APP - Google Patents
Energy -conserving charger based on control of cell -phone APP Download PDFInfo
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- CN205104965U CN205104965U CN201520929368.6U CN201520929368U CN205104965U CN 205104965 U CN205104965 U CN 205104965U CN 201520929368 U CN201520929368 U CN 201520929368U CN 205104965 U CN205104965 U CN 205104965U
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Abstract
The utility model discloses an energy -conserving charger based on control of cell -phone APP, including bridge type rectifier circuit, ON -OFF control circuit, high -frequency transformer, the low voltage output circuit of establishing ties in proper order, it still includes: the electronic switch between bridge type rectifier circuit and ON -OFF control circuit concatenates, and with the APP control signal demodulation of cell -phone end and the APP signal demodulation circuit of output control power -off signal, isolating driver circuit to the control signal isolation, the last electric self -sustaining circuit of connecting isolating driver circuit and electronic switch control end, it is according to the control signal control electronic switch's after keeping apart break -make, and the turn on level that the electricity initial stage provided the short time to electronic switch's control end on the charger is in order to maintain switching on of electronic switch, the utility model discloses can automatic disconnection after the cell -phone charges being connected of charger and commercial power, eliminate no -load loss, practice thrift the electric energy, realize 0 consumption of standby, the life of extension battery charging outfit, improvement electrical safety nature, have small in size, low cost's advantage concurrently.
Description
Technical field
The utility model relates to charger, particularly relate to the control signal of a kind of APP application program based on mobile phone terminal or operating system transmission, can cut off the electricity supply after charging terminates, realize standby zero-power-consumption, to reduce no-load loss, reach energy-conservation and improve the safe charger of charging.
Background technology
The current development along with society and scientific and technological level constantly progress, cell phone type digital electronic goods have become daily necessities indispensable in daily life.The electronic products such as these mobile phones generally use lithium battery power supply, and in life, people have got used to using daytime be its charging at night, and therefore ubiquity charger device and is in "on" position for a long time.Some people tens hours, several days even long-term is placed in energising holding state by charger, makes charger be in insignificant unloaded electriferous state for a long time, except wasting energy, also will speed up the aging of charging device, even cause security incident.Simultaneously because current technology is perfect not enough, automatically disconnect when thoroughly cannot solve charging complete with charger or by the electrical connection of fill device, especially can not disconnect the electrical connection with line, therefore there is no-load standby loss, also there is potential safety hazard simultaneously.
Present charger for mobile phone generally uses off-line switch flyback switch circuit, and 85V ~ 275V alternating current that electrical network provides by circuit is converted to the direct voltage required for electronic equipment.Under normal operating conditions, the loss of inverse-excitation type switch power-supply mainly comprises conduction loss and switching loss, and the loss of control circuit.Under holding state, because the output current of system is close to zero, conduction loss can be ignored, and the loss of switching loss and control circuit becomes main system standby power consumption.Referring to Fig. 2, the idling consumption existed in the present case mainly contains and starts loss (R201, R202), absorption loss (R203, C201), high frequency transformer magnetic core loss (T), output rectifying tube reverse recovery loss (D301), driving loss (R211), switching loss (Q201).Due to the particularity of charger, namely in once complete charging process, without the need to again starting after charging complete, therefore idling consumption is exactly a kind of serious waste.
Often be reported in media or the digital electronic goods such as the mobile phone charging of news media time the fire incident that causes, moment prompting people charge safe importance.While charging device is updated and is improved defencive function, various charge protection device or equipment constantly appear on the market, these charge protection devices or equipment be reduce charging security incident serve positive effect, but this kind of protective device also also exists following deficiency: 1, need manually to participate in, namely need user initiatively to open or start just effective, such as push button switch activated can use, and it is convenient not to use; 2, timing device, timing device is a charging interval of artificial setting, and the time arrives, deenergization.Because battery is full of the uncertainty of electricity time, namely battery remaining power is different, and the charging interval is not identical yet, and therefore timing can only increase the problem that duration solves power-off, and it is convenient not to use; 3, there are technological difficulties because the charger of current main flow generally adopts high frequency switch power transforming circuit structure (traditional iron-core transformer is progressively withdrawn from the market) therefore to realize power down function by the break-make of the low voltage control high-pressure side of output, especially the mode of Control is utilized, due to the volume reason of relay, the problem that product is miniaturized and microminiaturized cannot be solved, so almost do not have possibility to use relay to solve the application mode of power-off on charger for mobile phone.
Although existing charger technologies stand-by power consumption is progressively reducing or reducing, but still does not solve the power dissipation concerns under holding state, standby zero-power-consumption cannot realized.
Utility model content
The utility model is the problems referred to above that will solve prior art, propose that a kind of APP application program based on mobile phone terminal or operating system transmits control signal, can after charging terminates auto-breaking, to reduce the charger that no-load loss reaches energy-conservation and improves Electrical Safety, realize the object of standby zero-power-consumption.
For solving the problems of the technologies described above, the technical scheme that the utility model proposes is a kind of energy-saving charger controlled based on mobile phone A PP of design, and it comprises the bridge rectifier, ON-OFF control circuit, high frequency transformer, the low-voltage output circuit that connect successively; Low-voltage output circuit is powered to mobile phone by the USB socket interface of standard, and it also comprises: be serially connected in the electronic switch between bridge rectifier and ON-OFF control circuit, and APP signal demodulating circuit; The control signal that APP signal demodulating circuit is sent by APP application program or the operating system of the standard USB socket interface mobile phone terminal of described charger is (easy in order to describe, below incite somebody to action " control signal that APP application program or operating system send " referred to as " APP control signal "), and export control command according to APP control signal; Isolated drive circuit, connects APP signal demodulating circuit, in order to the described control signal of isolation feedback; Power on self-hold circuit, connect the control end of isolated drive circuit and electronic switch, control the break-make of electronic switch according to the control signal after isolation, and provide the conduction level of short time to maintain the conducting of electronic switch at the charger initial stage that powers on to the control end of electronic switch.
Described isolated drive circuit comprises photoelectrical coupler, and the input of this photoelectrical coupler connects described APP signal demodulating circuit, and power on described in output connects self-hold circuit.
Described electronic switch adopts NMOS tube, and is serially connected in the negative pole output line of described bridge rectifier; The described self-hold circuit that powers on comprises the first resistance, the first electric capacity, the second resistance that are serially connected between bridge rectifier positive pole output line and negative pole output line, the 3rd resistance is connected in series between the tie point of the first resistance and the first electric capacity and the collector electrode of described photoelectrical coupler, first electric capacity is connected the emitter of photoelectrical coupler and the grid of electronic switch with the tie point of the second resistance, the 4th resistance and voltage-stabiliser tube in parallel between the grid of electronic switch and source electrode; A described first electric capacity two ends reboot button in parallel, this reboot button adopts and often drives button.
Described electronic switch adopts PMOS, and is serially connected in the positive pole output line of described bridge rectifier; The described self-hold circuit that powers on comprises the first resistance, the second resistance, the first electric capacity that are serially connected between bridge rectifier positive pole output line and negative pole output line, first resistance is connected the grid of electronic switch and the collector electrode of described photoelectrical coupler with the tie point of the second resistance, the emitter of photoelectrical coupler connects the negative pole output line of bridge rectifier by the 3rd resistance, the 4th resistance and voltage-stabiliser tube in parallel between the grid of electronic switch and source electrode; A described first electric capacity two ends reboot button AN in parallel, this reboot button adopts and often drives button.
Described APP signal demodulating circuit DC power supply used is connected the output of described low-voltage output circuit with ground, and DC power supply passes through the 5th resistance, described photoelectrical coupler, switching tube ground connection, is provided with the 42 resistance between DC power supply and switching tube; DC power supply is by the 41 resistance current limliting and after voltage stabilizing, provide reference voltage source; Reference voltage source is by the 35 resistance, the 36 resistance, the 37 grounding through resistance of series connection; Reference voltage source is by the 38 resistance, the 39 resistance, the 40 grounding through resistance of series connection; DC power supply is by the 31 resistance, the 32 grounding through resistance of series connection; DC power supply is by the 33 resistance, the 34 grounding through resistance of series connection; Described APP signal demodulating circuit is provided with DP+ (DigitalPositive) and DM-(DigitalMinus) link, and respectively with the D+(DATA+ in described standard USB socket or data just) and D-(DATA-or data minus) be connected, received the APP control signal of mobile phone terminal during charging by data wire D+ and data wire D-; The tie point of the 35 resistance and the 36 resistance connects the reverse input end of the first comparator, 36 resistance and the 37 ohmic connection points connect the reverse input end of the second comparator, and DM-holds connection the 31 resistance and the tie point of the 32 resistance and the input in the same way of the first comparator and the second comparator; The tie point of the 38 resistance and the 39 resistance connects the reverse input end of the 3rd comparator, 39 resistance and the 40 ohmic connection points connect the reverse input end of the 4th comparator, and DP+ holds connection the 33 resistance and the tie point of the 34 resistance and the input in the same way of the 3rd comparator and the 4th comparator; First comparator and the output of the second comparator are connected two inputs of the second NAND gate respectively, 3rd comparator and the output of the 4th comparator are connected two inputs of the 3rd NAND gate respectively, second NAND gate and the output of the 3rd NAND gate are connected two inputs of the first NAND gate respectively, and the output of the first NAND gate connects the control end of described switching tube by the 4th not gate.
Described APP signal demodulating circuit DC power supply used is connected the output of described low-voltage output circuit with ground, and DC power supply passes through switching tube, the 5th resistance and described photoelectrical coupler ground connection, is provided with the 42 resistance between switching tube and ground; DC power supply is by the 41 resistance current limliting and provide reference voltage source after voltage stabilizing.Reference voltage source is by the 35 resistance, the 36 resistance, the 37 grounding through resistance of series connection; Reference voltage source is by the 38 resistance, the 39 resistance, the 40 grounding through resistance of series connection; DC power supply is by the 31 resistance, the 32 grounding through resistance of series connection; DC power supply is by the 33 resistance, the 34 grounding through resistance of series connection; Described APP signal demodulating circuit is provided with DP+ (DigitalPositive) and DM-(DigitalMinus) link, and respectively with the D+(DATA+ in described standard USB socket or data just) and D-(DATA-or data minus) be connected, received the APP control signal of mobile phone terminal during charging by data wire D+ and data wire D-; The tie point of the 35 resistance and the 36 resistance connects the reverse input end of the first comparator, 36 resistance and the 37 ohmic connection points connect the reverse input end of the second comparator, and DM-holds connection the 31 resistance and the tie point of the 32 resistance and the input in the same way of the first comparator and the second comparator; The tie point of the 38 resistance and the 39 resistance connects the reverse input end of the 3rd comparator, 39 resistance and the 40 ohmic connection points connect the reverse input end of the 4th comparator, and DP+ holds connection the 33 resistance and the tie point of the 34 resistance and the input in the same way of the 3rd comparator and the 4th comparator; First comparator and the output of the second comparator are connected two inputs of the second NAND gate respectively, 3rd comparator and the output of the 4th comparator are connected two inputs of the 3rd NAND gate respectively, second NAND gate and the output of the 3rd NAND gate are connected two inputs of the first NAND gate respectively, and the output of the first NAND gate connects the control end of described switching tube by buffer.
Compared with prior art, the utility model automatically can disconnect the connection of charger and civil power after mobile phone charging terminates, and eliminates no-load loss, realizes standby zero-power-consumption, saves energy, extend the useful life of charging device, improve electrical safety; Have compact, advantage with low cost concurrently.
Accompanying drawing explanation
Fig. 1 is the utility model theory diagram;
Fig. 2 is the circuit diagram that electronic switch is serially connected in bridge rectifier negative pole output line;
Fig. 3 is the circuit diagram that electronic switch is serially connected in bridge rectifier positive pole output line;
Fig. 4 is the circuit diagram that APP signal demodulating circuit controls photoelectrical coupler negative electrode;
Fig. 5 is the circuit diagram that APP signal demodulating circuit controls photoelectrical coupler anode.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is described in further detail.Should be appreciated that specific embodiment described herein only for explaining the utility model, and be not used in restriction the utility model.
Referring to the theory diagram shown in Fig. 1, the utility model discloses a kind of energy-saving charger controlled based on mobile phone A PP, comprise the bridge rectifier, electronic switch Q1, ON-OFF control circuit, high frequency transformer, the low-voltage output circuit (low-voltage output circuit is charged to mobile phone by the standard USB socket interface of charger) that connect successively, and be connected to APP signal demodulating circuit, isolated drive circuit between low-voltage output circuit and electronic switch in turn, power on self-hold circuit.Wherein APP signal demodulating circuit, by the APP control signal of the standard USB socket interface mobile phone terminal of described charger, and exports control command according to APP control signal; Isolated drive circuit, connects APP signal demodulating circuit, in order to the described control signal of isolation feedback, makes high-low pressure control circuit electrical isolation; Power on self-hold circuit, connect the output of isolated drive circuit and the control end of electronic switch, control the break-make of electronic switch according to the control signal after isolation, and provide the conduction level of short time to maintain the conducting of electronic switch at the charger initial stage that powers on to the control end of electronic switch.
Referring to Fig. 1, power on initial, the self-hold circuit that powers on provides the conduction level of short time to electronic switch, conducting when electronic switch is powered on, the ON-OFF control circuit of electronic switch rear end, high frequency transformer obtain electric, and the low-voltage output circuit of high frequency transformer secondary end exports direct current.When powering on, APP signal demodulating circuit continues the control signal sending conducting, this control signal is transferred to the self-hold circuit that powers on after isolated drive circuit isolation, the self-hold circuit that powers on controls electronic switch and continues conducting, realizes self-sustaining by this, and mobile phone obtains continuous print charging.When charging terminates, mobile phone sends the APP control signal stopping charging, APP signal demodulating circuit is by this signal receiving and export the control signal of charge cutoff, this control signal is transferred to the self-hold circuit that powers on after isolated drive circuit isolation, the self-hold circuit that powers on enters power-off lock-out state and controls electronic switch cut-off and disconnects, the ON-OFF control circuit of electronic switch rear end, high frequency transformer dead electricity, further low-voltage output circuit, the equal dead electricity of APP signal demodulating circuit, circuit power consumption is reduced to zero, and therefore stand-by power consumption is zero substantially.Realize saves energy by this, extend the useful life of charging device, improve the function of Electrical Safety.
In the preferred embodiment, described isolated drive circuit comprises photoelectrical coupler Q2, and the input of this photoelectrical coupler connects described APP signal demodulating circuit, and power on described in output connects self-hold circuit.
Referring to the preferred embodiment shown in Fig. 2, electronic switch Q1 adopts NMOS tube, and is serially connected in the negative pole output line of described bridge rectifier; The described self-hold circuit that powers on comprises the first resistance R1, the first electric capacity C1, the second resistance R2 that are serially connected between bridge rectifier positive pole output line and negative pole output line, the 3rd resistance R3 is connected in series between the tie point of the first resistance and the first electric capacity and the collector electrode of described photoelectrical coupler Q2, first electric capacity is connected the emitter of photoelectrical coupler and the grid of electronic switch with the tie point of the second resistance, the 4th resistance R4 and voltage-stabiliser tube D6 in parallel between the grid of electronic switch and source electrode.Powering on initially, can not to suddenly change principle according to electric capacity both end voltage, first electric capacity C1 both end voltage is 0, be equivalent to C1 short circuit, the high-voltage dc voltage (high-voltage dc voltage value is determined by the 110--220V electric main inputted) that electric main exports after bridge rectifier rectification, electric current flows through R1, C1, R2, the node NODE of R1 and R2 produces dividing potential drop, the voltage of dividing point is high level, this high level is added to the grid of Q1, Q1 conducting, the ON-OFF control circuit of Q1 rear end, high frequency transformer obtains electric, the low-voltage output circuit of high frequency transformer secondary end obtains electric, and export charging current, APP signal demodulating circuit obtain electric after start working and continue to send and keep the control signal of conducting, further control makes photoelectrical coupler Q2 conducting, the voltage of bridge rectifier positive pole (H+) voltage after the output dividing potential drop of R1, R3, Q2 is added to the grid of Q1, and system forms self-locking, and Q1 continues conducting, charger trickle charge.Along with the increase of time, the voltage at C1 two ends is increased to supply voltage, in DC circuit, be equivalent to open circuit, the current potential of NODE node is simultaneously also in reduction, and now the current potential of Q1 grid depends on the output whether conducting of Q2, namely depend on whether mobile phone A PP control signal is power-off control command, when mobile phone terminal does not send power-off control command, APP signal demodulating circuit drives the output conducting of Q2, and the voltage at C1 two ends is close to 0, Q1 conducting system forms self-locking, charger continuous operation; When battery of mobile phone is full of electricity, mobile phone sends the APP control signal of charging termination, APP signal demodulating circuit Received signal strength drived control Q2 end, further Q1 loses turn-on condition and ends, the self-hold circuit that powers on enters power-off lock-out state, ON-OFF control circuit, high frequency transformer etc. cannot form loop, low-voltage output circuit dead electricity, and the electric current in whole circuit is zero substantially, and therefore charger enters standby zero-power-consumption state.
In sum, the self-hold circuit that powers on has two kinds of mode of operations: the self-sustaining pattern that powers on and power-off locking mode.1, power on self-sustaining pattern: when powering on initial, the self-hold circuit that powers on provides the level enough making electronic switch conducting, control electronic switch while powering on, be in conduction mode, control electronic switch ON time can according to circuit need be set as that several ms is to the several seconds.2, power-off locking mode: the self-sustaining mode of operation that powers on can only make electronic switch maintain the conducting of short time, the break-make of electronic switch will be controlled to determine by Q2 afterwards.The output conducting of control Q2, electronic switch Q1 is by constant conduction, and the output of control Q2 disconnects (high-impedance state) electronic switch Q1 and disconnects, and the self-hold circuit that powers on enters power-off lock-out state.The self-hold circuit that powers on is once after entering power-off lock-out state, and circuit cannot oneself unlock state.Because the control of Q2 is at low-pressure end, therefore low-pressure end is once lose power supply, and Q2 controls also will lose efficacy, and the self-hold circuit that therefore powers on enters power-off lock-out state.
Referring to the preferred embodiment shown in Fig. 3, in this example, electronic switch Q1 adopts PMOS, and is serially connected in the positive pole output line of described bridge rectifier; The described self-hold circuit that powers on comprises the first resistance R1, the second resistance R2, the first electric capacity C1 that are serially connected between bridge rectifier positive pole output line and negative pole output line, first resistance is connected the grid of electronic switch and the collector electrode of described photoelectrical coupler Q2 with the tie point of the second resistance, the emitter of photoelectrical coupler connects the negative pole output line of bridge rectifier by the 3rd resistance R3, the 4th resistance R4 and voltage-stabiliser tube D6 in parallel between the grid of electronic switch and source electrode.Powering on initially, can not to suddenly change principle according to electric capacity both end voltage, first electric capacity C1 both end voltage is 0, be equivalent to C1 short circuit, the high-voltage dc voltage (high-voltage dc voltage value is determined by the 110--220V electric main inputted) that electric main exports after bridge rectifier rectification, electric current flows through R1, R2, C1, R1 and R2 produces dividing potential drop, relative to H+ point, dividing point NODE is negative voltage, this negative voltage is added to the grid of Q1, Q1 conducting, the ON-OFF control circuit of Q1 rear end, high frequency transformer obtains electric, low-voltage output circuit obtains electric, and export charging current, APP signal demodulating circuit obtain electric after start working and continue to send and keep the control signal of conducting, further control makes photoelectrical coupler Q2 conducting, bridge rectifier positive pole (H+) voltage is through R1, Q2, R3 dividing potential drop, and the negative voltage of R1 lower end (NODE end) is added to the grid of Q1, and system forms self-locking, and Q1 continues conducting, charger continuous operation.Along with the voltage at the increase C1 two ends of time raises gradually, open circuit is equivalent in DC circuit, voltage between H+ point and NODE node is also reducing simultaneously, now the current potential of Q1 grid depends on the output whether conducting of Q2, namely depend on whether mobile phone A PP control signal is power-off control command, when mobile phone terminal does not send power-off control command, APP signal demodulating circuit drives the output conducting of Q2, Q1 conducting system forms self-locking, charger continuous operation; When battery of mobile phone is full of electricity, mobile phone sends the APP control signal of charging termination, APP signal demodulating circuit Received signal strength drived control Q2 end, Q1 loses turn-on condition and ends, the self-hold circuit that powers on enters power-off lock function (or state), ON-OFF control circuit, high frequency transformer etc. cannot form loop, low-voltage output circuit dead electricity, and the electric current in whole circuit is zero substantially, and therefore charger enters standby zero-power-consumption state.
In practical application; when after charger power-off protection; if for again charging; maybe to give the charging of other electronic product; charger and electricity network is needed to depart from disconnection completely; and then charger is accessed electricity network, normally can use charging protection function, but this needs frequent plug charger mains terminal.In order to reduce the inconvenience that plug charger brings, increasing the flexibility and convenience that use operation, therefore setting up a reboot button.Referring to Fig. 2 and Fig. 3, a reboot button AN in parallel at the first electric capacity C1 two ends, this reboot button adopts and often drives button.When after charge protection power-off; if desired again charge function is started; without the need to charger being departed from electricity network (or socket); only need press the function that cuts off self-lock (or state) that lower startup button AN removes charger; charger can restart normal use, brings great convenience to user.
Referring to the preferred embodiment shown in Fig. 4, described APP signal demodulating circuit DC power supply used is connected the output of described low-voltage output circuit with ground, DC power supply VCC, by the 5th resistance R5, described photoelectrical coupler Q2, switching tube Q3 ground connection, is provided with the 42 resistance R42 between DC power supply and switching tube; DC power supply is by the 41 resistance R41 current limliting and provide reference voltage source VDD after Z1 voltage stabilizing; Reference voltage source passes through the 35 resistance R35, the 36 resistance R36, the 37 resistance R37 ground connection of series connection; Reference voltage source passes through the 38 resistance R38, the 39 resistance R39, the 40 resistance R40 ground connection of series connection; DC power supply passes through the 31 resistance R31, the 32 resistance R32 ground connection of series connection; DC power supply passes through the 33 resistance R33, the 34 resistance R34 ground connection of series connection; Described APP signal demodulating circuit is provided with DP+ (DigitalPositive) and DM-(DigitalMinus) link, and respectively with the D+(DATA+ in described standard USB socket or data just) and D-(DATA-or data minus) be connected, received the APP control signal of mobile phone terminal during charging by data wire D+ and data wire D-; The tie point of the 35 resistance and the 36 resistance connects the reverse input end of the first comparator CMP1,36 resistance and the 37 ohmic connection points connect the reverse input end of the second comparator CMP2, and DM-holds connection the 31 resistance and the tie point of the 32 resistance and the input in the same way of the first comparator and the second comparator; The tie point of the 38 resistance and the 39 resistance connects the reverse input end of the 3rd comparator CMP3,39 resistance and the 40 ohmic connection points connect the reverse input end of the 4th comparator CMP4, and DP+ holds connection the 33 resistance and the tie point of the 34 resistance and the input in the same way of the 3rd comparator and the 4th comparator; First comparator and the output of the second comparator are connected two inputs of the second NAND gate U2 respectively, 3rd comparator and the output of the 4th comparator are connected two inputs of the 3rd NAND gate U3 respectively, second NAND gate and the output of the 3rd NAND gate are connected two inputs of the first NAND gate U1 respectively, and the output of the first NAND gate connects the control end of described switching tube by the 4th not gate U4.
APP signal demodulating circuit has been shown in Fig. 4 and Fig. 5, and wherein R35, R36, R37 form bleeder circuit, and dividing point is used as the reference voltage of comparator CMP1 with CMP2 and is connected with the inverting input of comparator CMP1 with CMP2 respectively.Window voltage is provided by R31 and R32 tie point dividing potential drop, be connected with the in-phase input end of comparator CMP2 with DM-, comparator CMP1 simultaneously, window voltage value is greater than the reference voltage of comparator CMP2 inverting input, is less than the reference voltage of comparator CMP1 inverting input.R38, R39, R40 form bleeder circuit, be used as the reference data voltage of comparator CMP3 and CMP4, be connected with the inverting input of comparator CMP4 with comparator CMP3 respectively, window voltage is provided by R33 and R34 tie point dividing potential drop, be connected with the in-phase input end of DP+, comparator CMP3 with CMP4 simultaneously, window voltage value is greater than the voltage of comparator CMP4 inverting input, is less than the voltage of comparator CMP3 inverting input.
It may be noted that the utility model APP signal demodulating circuit application of logic circuit module designs, logic control circuit both can control the anode of optocoupler input, also can control the negative electrode of optocoupler.Fig. 4 is the circuit diagram controlling optocoupler negative electrode, for Fig. 4 in detail its operation principle is described in detail below: be connected with VCC by A end in figure, C end is connected with D, and S end is connected with GND.Power on initial, the window voltage that R31 and the R32 tie point DM-be connected with USB data line D-holds is less than the current potential of the first comparator CMP1 inverting input, be greater than the current potential of the second comparator CMP2 inverting input, therefore the output output low level of the first comparator CMP1, the output of the second comparator CMP2 exports high level, and further NAND gate U2 exports high level.In like manner, the window voltage that R33 and the R34 tie point DP+ be connected with USB data line D+ holds is less than the current potential of the 3rd comparator CMP3 inverting input, be greater than the current potential of the 4th comparator CMP4 inverting input, therefore the output output low level of the 3rd comparator CMP3, the output of the 4th comparator CMP4 exports high level, and further 3rd NAND gate U3 exports high level.Because U2 and U3 is all output high level, because two inputs of U1 are connected with the output of U2, U3 respectively, therefore the output of U1 is low level, this low level exports high level after inverter U4 is anti-phase, this high level is loaded into the grid of NMOS tube Q3, therefore Q3 conducting, because S end is connected with GND, the drain electrode of Q3 and D end are dragged down, output low level.The negative electrode that further D end controls the input of optocoupler Q2 is low level, and therefore whole Circuits System is maintained conducting state, and charger exports normal.
The detection and control of charging complete: the APP application software of mobile phone terminal or operating system detect charged state in real time, the power-off control command (voltage signal) of charging complete is sent to D+ and D-when detecting that battery is full of electricity, APP signal demodulating circuit passes through DP+, DM-receives power-off control command, power-off control command makes window voltage change, make the comparator CMP1 in logic control circuit, comparator CMP2, comparator CMP3, comparator CMP4 all exports high level, the output output low level of further U2 and U3, U1 exports high level, this high level signal is through U4 anti-phase rear drive Q3 grid, due to U4 anti-phase after signal be low level, therefore Q3 switches to cut-off state by conducting state, because Q3 drain electrode is connected to resistance R42, D end exports high level, the negative electrode of optocoupler Q2 input becomes high level.The self-hold circuit that powers on further enters power-off lock-out state, finally achieve and realize power down function by the operating system of mobile phone terminal or APP application program controlling charger, realize energy-conservation and improve safety utilization of electric power, thoroughly solving the waste that standby power loss causes, realize standby 0 loss.
Fig. 5 shows the circuit diagram that APP signal demodulating circuit controls photoelectrical coupler anode, is connected by D end with VCC, and A end is held with S and is connected, and C end is connected with GND.
Described APP signal demodulating circuit DC power supply used is connected the output of described low-voltage output circuit with ground, DC power supply VCC, by switching tube Q3, the 5th resistance R5 and described photoelectrical coupler Q2 ground connection, is provided with the 42 resistance R42 between switching tube Q3 and ground; DC power supply is by the 41 resistance current limliting and provide reference voltage source VDD after Z1 voltage stabilizing.Reference voltage source passes through the 35 resistance R35, the 36 resistance R36, the 37 resistance R37 ground connection of series connection; Reference voltage source passes through the 38 resistance R38, the 39 resistance R39, the 40 resistance R40 ground connection of series connection; DC power supply passes through the 31 resistance R31, the 32 resistance R32 ground connection of series connection; DC power supply passes through the 33 resistance R33, the 34 resistance R34 ground connection of series connection; Described APP signal demodulating circuit is provided with DP+ and DM-link, and is connected with D+ and D-in described standard USB socket respectively, is received the APP control signal of mobile phone terminal during charging by data wire D+ and data wire D-; The tie point of the 35 resistance and the 36 resistance connects the reverse input end of the first comparator CMP1,36 resistance and the 37 ohmic connection points connect the reverse input end of the second comparator CMP2, and DM-holds connection the 31 resistance and the tie point of the 32 resistance and the input in the same way of the first comparator and the second comparator; The tie point of the 38 resistance and the 39 resistance connects the reverse input end of the 3rd comparator CMP3,39 resistance and the 40 ohmic connection points connect the reverse input end of the 4th comparator CMP4, and DP+ holds connection the 33 resistance and the tie point of the 34 resistance and the input in the same way of the 3rd comparator and the 4th comparator; First comparator and the output of the second comparator are connected two inputs of the second NAND gate U2 respectively, 3rd comparator and the output of the 4th comparator are connected two inputs of the 3rd NAND gate U3 respectively, second NAND gate and the output of the 3rd NAND gate are connected two inputs of the first NAND gate U1 respectively, the output of the first NAND gate connects the control end of described switching tube Q3 by buffer U5, Q3 described in Fig. 5 is PMOS.
The principle that control principle and the APP signal demodulating circuit of this circuit control photoelectrical coupler negative electrode is substantially identical, does not repeat them here.
Above embodiment is only and illustrates, non-ly provides constraints.Anyly do not depart from the application's spirit and category, and to its equivalent modifications of carrying out or change, among the right that all should be contained in the application.
Claims (6)
1. the energy-saving charger controlled based on mobile phone A PP, comprise the bridge rectifier, ON-OFF control circuit, high frequency transformer, the low-voltage output circuit that connect successively, low-voltage output circuit is powered to mobile phone by charging plug, characterized by further comprising: be serially connected in the electronic switch (Q1) between bridge rectifier and ON-OFF control circuit, and
APP signal demodulating circuit, obtains the APP control signal of mobile phone terminal by the USB socket interface of described charger standard, and by APP control signal demodulation process, exports control command according to APP control signal;
Isolated drive circuit, connects APP signal demodulating circuit, in order to the described control signal of isolation feedback;
Power on self-hold circuit, connect the control end of isolated drive circuit and electronic switch, control the break-make of electronic switch according to the control signal after isolation, and provide the conduction level of short time to maintain the conducting of electronic switch at the charger initial stage that powers on to the control end of electronic switch.
2. as claimed in claim 1 based on the energy-saving charger that mobile phone A PP controls, it is characterized in that: described isolated drive circuit comprises photoelectrical coupler (Q2), the input of this photoelectrical coupler connects described APP signal demodulating circuit, and power on described in output connects self-hold circuit.
3., as claimed in claim 2 based on the energy-saving charger that mobile phone A PP controls, it is characterized in that: described electronic switch (Q1) adopts NMOS tube, and be serially connected in the negative pole output line of described bridge rectifier;
The described self-hold circuit that powers on comprises the first resistance (R1), the first electric capacity (C1), the second resistance (R2) that are serially connected between bridge rectifier positive pole output line and negative pole output line, the 3rd resistance (R3) is connected in series between the tie point of the first resistance and the first electric capacity and the collector electrode of described photoelectrical coupler (Q2), first electric capacity is connected the emitter of photoelectrical coupler and the grid of electronic switch with the tie point of the second resistance, the 4th resistance (R4) in parallel and voltage-stabiliser tube (D6) between the grid of electronic switch and source electrode; Described first electric capacity (C1) two ends reboot button (AN) in parallel, this reboot button adopts and often drives button.
4., as claimed in claim 2 based on the energy-saving charger that mobile phone A PP controls, it is characterized in that: described electronic switch (Q1) adopts PMOS, and be serially connected in the positive pole output line of described bridge rectifier;
The described self-hold circuit that powers on comprises the first resistance (R1), the second resistance (R2), the first electric capacity (C1) that are serially connected between bridge rectifier positive pole output line and negative pole output line, first resistance is connected the grid of electronic switch and the collector electrode of described photoelectrical coupler (Q2) with the tie point of the second resistance, the emitter of photoelectrical coupler connects the negative pole output line of bridge rectifier by the 3rd resistance (R3), the 4th resistance (R4) in parallel and voltage-stabiliser tube (D6) between the grid of electronic switch and source electrode; Described first electric capacity (C1) two ends reboot button (AN) in parallel, this reboot button adopts and often drives button.
5. the energy-saving charger controlled based on mobile phone A PP as described in any one of claim 3 or 4, it is characterized in that: described APP signal demodulating circuit DC power supply used is connected the output of described low-voltage output circuit with ground, DC power supply (VCC), by the 5th resistance (R5), described photoelectrical coupler (Q2), switching tube (Q3) ground connection, is provided with the 42 resistance (R42) between DC power supply and switching tube; DC power supply is by the 41 resistance R41 current limliting and after Z1 voltage stabilizing, provide reference voltage source (VDD); Reference voltage source by series connection the 35 resistance (R35), the 36 resistance (R36), the 37 resistance (R37) ground connection; Reference voltage source by series connection the 38 resistance (R38), the 39 resistance (R39), the 40 resistance (R40) ground connection; DC power supply passes through the 31 resistance (R31), the 32 resistance (R32) ground connection of series connection; DC power supply passes through the 33 resistance (R33), the 34 resistance (R34) ground connection of series connection; Described APP signal demodulating circuit is provided with DP+ and DM-link, and is connected with D+ and D-in described standard USB socket respectively, is received the APP control signal of mobile phone terminal during charging by data wire D+ and data wire D-; The tie point of the 35 resistance and the 36 resistance connects the reverse input end of the first comparator (CMP1), 36 resistance and the 37 ohmic connection points connect the reverse input end of the second comparator (CMP2), and DM-holds connection the 31 resistance and the tie point of the 32 resistance and the input in the same way of the first comparator and the second comparator; The tie point of the 38 resistance and the 39 resistance connects the reverse input end of the 3rd comparator (CMP3), 39 resistance and the 40 ohmic connection points connect the reverse input end of the 4th comparator (CMP4), and DP+ holds connection the 33 resistance and the tie point of the 34 resistance and the input in the same way of the 3rd comparator and the 4th comparator; First comparator and the output of the second comparator are connected two inputs of the second NAND gate (U2) respectively, 3rd comparator and the output of the 4th comparator are connected two inputs of the 3rd NAND gate (U3) respectively, second NAND gate and the output of the 3rd NAND gate are connected two inputs of the first NAND gate (U1) respectively, and the output of the first NAND gate connects the control end of described switching tube by the 4th not gate (U4).
6. the energy-saving charger controlled based on mobile phone A PP as described in any one of claim 3 or 4, it is characterized in that: described APP signal demodulating circuit DC power supply used is connected the output of described low-voltage output circuit with ground, DC power supply (VCC), by switching tube (Q3), the 5th resistance (R5) and described photoelectrical coupler (Q2) ground connection, is provided with the 42 resistance (R42) between switching tube (Q3) and ground; DC power supply is by the 41 resistance current limliting and after Z1 voltage stabilizing, provide reference voltage source (VDD); Reference voltage source by series connection the 35 resistance (R35), the 36 resistance (R36), the 37 resistance (R37) ground connection; Reference voltage source by series connection the 38 resistance (R38), the 39 resistance (R39), the 40 resistance (R40) ground connection; DC power supply passes through the 31 resistance (R31), the 32 resistance (R32) ground connection of series connection; DC power supply passes through the 33 resistance (R33), the 34 resistance (R34) ground connection of series connection; Described APP signal demodulating circuit is provided with DP+ and DM-link, and is connected with D+ and D-in described standard USB socket respectively, is received the APP control signal of mobile phone terminal during charging by data wire D+ and data wire D-; The tie point of the 35 resistance and the 36 resistance connects the reverse input end of the first comparator (CMP1), 36 resistance and the 37 ohmic connection points connect the reverse input end of the second comparator (CMP2), and DM-holds connection the 31 resistance and the tie point of the 32 resistance and the input in the same way of the first comparator and the second comparator; The tie point of the 38 resistance and the 39 resistance connects the reverse input end of the 3rd comparator (CMP3), 39 resistance and the 40 ohmic connection points connect the reverse input end of the 4th comparator (CMP4), and DP+ holds connection the 33 resistance and the tie point of the 34 resistance and the input in the same way of the 3rd comparator and the 4th comparator; First comparator and the output of the second comparator are connected two inputs of the second NAND gate (U2) respectively, 3rd comparator and the output of the 4th comparator are connected two inputs of the 3rd NAND gate (U3) respectively, second NAND gate and the output of the 3rd NAND gate are connected two inputs of the first NAND gate (U1) respectively, and the output of the first NAND gate connects the control end of described switching tube by buffer (U5).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105244980A (en) * | 2015-11-20 | 2016-01-13 | 深圳市祝你快乐科技有限公司 | Energy saving charger controlled by mobile phone APP |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105244980A (en) * | 2015-11-20 | 2016-01-13 | 深圳市祝你快乐科技有限公司 | Energy saving charger controlled by mobile phone APP |
| WO2017084527A1 (en) * | 2015-11-20 | 2017-05-26 | 深圳市祝你快乐科技有限公司 | Mobile phone app control-based energy-saving charger |
| US11063461B2 (en) | 2015-11-20 | 2021-07-13 | Shenzhen Znkl Technology Co., Ltd | Mobile phone app control-based energy-saving charger |
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