CN204376473U - Portable power source - Google Patents
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- CN204376473U CN204376473U CN201520046401.0U CN201520046401U CN204376473U CN 204376473 U CN204376473 U CN 204376473U CN 201520046401 U CN201520046401 U CN 201520046401U CN 204376473 U CN204376473 U CN 204376473U
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Abstract
A kind of portable power source, comprises master controller, storage battery and boosting charge-discharge circuit, wherein: described master controller, is suitable for sending the first control signal to described boosting charge-discharge circuit, makes described charge in batteries; And send the second control signal to described boosting charge-discharge circuit, make described storage battery export preset voltage value through described boosting charge-discharge circuit; Boosting charge-discharge circuit, couple with described master controller, comprising: PMOS, the first control end of grid and described master controller couples, and the output channel of source electrode and described portable power source couples, and drain electrode and described battery positive voltage couple; NMOS tube, the second control end of grid and described master controller couples, source electrode with ground couple, drain electrode and described battery positive voltage couple.Adopt described portable power source, can effectively save portable power source cost, reduce the circuit area of portable power source, and, adopt NMOS tube and PMOS to support high current charge-discharge, improve the flexibility of application.
Description
Technical field
The utility model relates to field of power supplies, particularly relates to a kind of portable power source.
Background technology
Portable power source is a kind of portable charger integrating power supply and charge function, charges or standby power to the equipment such as mobile phone, panel computer whenever and wherever possible.
Existing portable power source is primarily of compositions such as charging input circuit, DC-DC (DC-dc conversion) THE BOOST SWITCHING CIRCUIT and peripheral circuit, central control circuit, USB output circuits.The output of charging input circuit is connected with the input of DC-DC THE BOOST SWITCHING CIRCUIT; the output of DC-DC THE BOOST SWITCHING CIRCUIT is connected with the input of USB output circuit; central control circuit is connected with DC-DC THE BOOST SWITCHING CIRCUIT and USB output circuit; DC-DC THE BOOST SWITCHING CIRCUIT and USB output circuit are controlled; battery core protective circuit is connected with DC-DC THE BOOST SWITCHING CIRCUIT, protects DC-DC THE BOOST SWITCHING CIRCUIT.
In existing portable power source, DC-DC THE BOOST SWITCHING CIRCUIT is normally realized by special boost chip, and needs in the periphery of boost chip to arrange corresponding peripheral cell, and overall cost is higher, and circuit area is larger.
Utility model content
The problem that the utility model embodiment solves how to save portable power source cost, reduces the circuit area of portable power source.
For solving the problem, the utility model embodiment provides a kind of portable power source, comprising: master controller, storage battery and boosting charge-discharge circuit, wherein:
Described master controller, is suitable for, when detecting that the charging port of described portable power source exists voltage input, sending the first control signal, described storage battery is charged through described boosting charge-discharge circuit to described boosting charge-discharge circuit; And, when detecting that the output port of described portable power source exists load, sending the second control signal to described boosting charge-discharge circuit, making described storage battery export preset voltage value through described boosting charge-discharge circuit;
Boosting charge-discharge circuit, couples with described master controller, comprising:
PMOS, first control end of grid and described master controller couples, and the output channel of source electrode and described portable power source couples, and drain electrode and described battery positive voltage couple, being suitable for the conducting when receiving the first control signal that described master controller sends, making described charge in batteries;
NMOS tube, second control end of grid and described master controller couples, source electrode with ground couple, drain electrode and described battery positive voltage couple, being suitable for the conducting when receiving the second control signal that described master controller sends, making described storage battery with the magnitude of voltage preset electric discharge.
Optionally, described boosting charge-discharge circuit also comprises: the first switch resistance, is connected between the first control end of described master controller and the grid of described PMOS; Second switch resistance, is connected between the second control end of described master controller and the grid of described NMOS tube.
Optionally, described boosting charge-discharge circuit also comprises: the first inductance, is connected between the drain electrode of described PMOS and the positive pole of described storage battery; First filter capacitor, first end and described first inductance couple, the second end with couple.
Optionally, described boosting charge-discharge circuit also comprises: the first discharge resistance, and the grid of first end and described PMOS couples, and the output channel of the second end and described portable power source couples; Second discharge resistance, the grid of first end and described NMOS tube couples, and the source electrode of the second end and described NMOS tube couples.
Optionally, described portable power source also comprises: charging insertion detection circuit, be arranged on the charging port place of described portable power source, insert test side with the charging of described master controller to couple, be suitable for when detecting that the charging port of described portable power source exists voltage input, charging to described master controller is inserted test side and is sent high level signal, makes described master controller send the first control signal to described boosting charge-discharge circuit.
Optionally, described charging insertion detection circuit comprises: the first divider resistance, and the VBUS of first end and described charging port holds and couples, and the charging of the second end and described master controller is inserted test side and coupled; Second divider resistance, the GND of first end and described charging port holds and couples, and the charging test side of the second end and described master controller couples.
Optionally, described portable power source also comprises: boost feedback circuit, couples with described charging insertion detection circuit, and couples with the charging/discharging voltage test side of described master controller, be suitable for the voltage of charging port input described in Real-time Obtaining, and be sent to described master controller.
Optionally, described boost feedback circuit comprises: the 3rd divider resistance, and the VBUS of first end and described charging port holds and couples, and the second end and described voltage detecting end couple; 4th divider resistance, first end and described voltage detecting end couple, and the control ground of the second end and described master controller is held and coupled.
Optionally, described portable power source also comprises: battery voltage detection circuit, couple with described battery positive voltage, and couple with the battery voltage detection end of described master controller, be suitable for the current voltage value of storage battery described in Real-time Obtaining, and the current voltage value of described storage battery is sent to described master controller.
Optionally, described battery voltage detection circuit comprises: the 5th divider resistance, 6th divider resistance, first filter resistance and the second filter capacitor, the described first end of the 5th divider resistance and the positive pole of described storage battery couple, the first end of the second end and described first filter resistance and the first end of described 6th divider resistance couple, the first end of described first filter resistance and the first end of described second filter capacitor and described battery voltage detection end couple, second end of described second filter capacitor and the second end of described 6th divider resistance are all held with the control ground of described master controller and are coupled.
Optionally, described portable power source also comprises: load detection circuit for access, hold with the GND of the output port of described portable power source and couple, and access test side with the load of described master controller and couple, be suitable for when detecting that described output port exists load, send low level signal to described master controller, make described master controller send the second control signal to described boosting charge-discharge circuit.
Optionally, described load detection circuit for access comprises: first drives resistance, second to drive resistance and the first NPN transistor, described first drives the GND of the first end of resistance and the output port of described portable power source to hold couples, and the base stage of the second end and described first NPN transistor couples; Described second drives the first end of resistance and the base stage of described first NPN transistor to couple, the second end and couple; The collector electrode of described first NPN transistor and described load access test side and couple, emitter with couple.
Optionally, described portable power source also comprises: electric discharge enable circuits, hold with the GND of the output port of described portable power source and couple, and couple with the Enable Pin of described master controller, being suitable for the conducting when receiving the enable signal that described controller sends, making described storage battery be described load supplying.
Optionally, described electric discharge enable circuits comprises: field effect transistor, and drain electrode and the GND of described output port holds and couple, source electrode and couple, the first end of grid and the 3rd discharge resistance couples; 3rd discharge resistance, the second end with couple.
Optionally, described portable power source also comprises: load current detection circuit, couples with described electric discharge enable circuits, and couples with the load current detection end of described master controller, is suitable for obtaining the current discharging current of described portable power source.
Optionally, described load current detection circuit comprises: sampling resistor, the second filter resistance and the 3rd filter capacitor, the first end of described sampling resistor and the first end of described second filter resistance and the source electrode of described field effect transistor couple, the second end with couple; Second end and the described load current detection end of described second filter resistance couple; First end and the described load current detection end of described 3rd filter capacitor couple, the second end with couple.
Optionally, described portable power source also comprises: charge protector, couples with the charging current test side of described master controller, is suitable for providing charge protection to described portable power source.
Optionally, described portable power source also comprises: battery power display circuit, couples, be suitable for the current voltage value according to described storage battery with the LED control end preset in described master controller, the battery electric quantity value that display is corresponding.
Optionally, described battery power display circuit comprises: at least two LED, and described LED couples with the LED control end preset in corresponding master controller respectively.
Optionally, described portable power source also comprises: lighting circuit, and the Lighting control end that first end and described master controller are preset couples, and the positive pole of the second end and described storage battery couples.
Optionally, described lighting circuit comprises: the first base resistance, and first end and described Lighting control end couple, and the base stage of the second end and the second NPN transistor couples;
Second NPN transistor, emitter with couple, the first end of collector electrode and the first current-limiting resistance couples;
LED, first end and anode couple, and the second end and described first current-limiting resistance second end couple.
Compared with prior art, the technical scheme of the utility model embodiment has the following advantages:
By PMOS and NMOS tube composition boosting charge-discharge circuit, the charging and discharging that boosting charge-discharge circuit controls storage battery is controlled by controller, and do not need to adopt special boost charge chip, cost-effective while, save the Connection Element of boost charge chip periphery, decrease the area of circuit, and, adopt NMOS tube and PMOS to support high current charge-discharge, improve the flexibility of application.
Further, test side is inserted in the charging of charge insertion detection circuit and master controller couple, the voltage detecting end of boost feedback circuit and master controller is coupled, the battery voltage detection end of battery voltage detection circuit and master controller is coupled, the load of load detection circuit for access and master controller is accessed test side couple, the Enable Pin of electric discharge enable circuits and master controller is coupled, the load current detection end of load current detection circuit and master controller is coupled, the charging current test side of charge protector and master controller is coupled, each functional circuit of portable power source and master controller are coupled, make full use of each input/output port of master controller, compared to existing portable power source, the maximization of master controller utilance can be realized.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of a kind of charge-discharge circuit that boosts in the utility model embodiment;
Fig. 2 is the circuit diagram of a kind of insertion detection circuit that charges, boost feedback circuit and battery voltage detection circuit in the utility model embodiment;
Fig. 3 is the pin distribution map of a kind of master controller in the utility model embodiment;
Fig. 4 is the circuit diagram of a kind of enable circuits of discharging in the utility model embodiment, load current detection circuit, load detection circuit for access;
Fig. 5 is the circuit diagram of a kind of discharge protection circuit in the utility model embodiment;
Fig. 6 is the circuit diagram that a kind of battery electric quantity in the utility model embodiment shows, fills soon control and electric torch circuit;
Fig. 7 is a kind of portable power source system control method flow chart in the utility model embodiment.
Embodiment
In existing portable power source, DC-DC THE BOOST SWITCHING CIRCUIT is normally realized by special boost chip, and needs in the periphery of boost chip to arrange corresponding peripheral cell, and overall cost is higher, and circuit area is larger.
In the utility model embodiment, by PMOS and NMOS tube composition boosting charge-discharge circuit, to be boosted charge-discharge circuit by main controller controls, control the charging and discharging of storage battery, and do not need to adopt special boost charge chip, cost-effective while, save the Connection Element of boost charge chip periphery, decrease the area of circuit.
For enabling above-mentioned purpose, the feature and advantage of the utility model embodiment more become apparent, below in conjunction with accompanying drawing, specific embodiment of the utility model is described in detail.
The utility model embodiment provides a kind of portable power source, comprising: master controller, storage battery and boosting charge-discharge circuit, wherein:
Master controller, at least two control ends can be comprised, when detecting that the charging port of portable power source exists voltage input, namely the power supply that there is peripheral hardware is that portable power source is when charging, master controller generates the first control signal, and sends the first control signal by the first control end to boosting charge-discharge circuit.Boosting charge-discharge circuit receives the first control signal, and perform and operate accordingly, thus make the storage battery coupled with the charge-discharge circuit that boosts enter charge mode, the power supply of peripheral hardware starts to charge to the storage battery of portable power source.
In the utility model one embodiment, charging insertion detection circuit can be set at the charging port place of portable power source.When detecting that charging port has external voltage to input, and when the duration that the external voltage of input is greater than certain value is greater than duration preset value, can be determined with the charging port that external power source is linked into portable power source, portable power source can enter charge mode.Charging insertion detection circuit inserts test side transmission feedback signal to the charging of master controller, such as, charging to master controller is inserted test side and is sent high level signal, main controller is known currently has external power to be linked into portable power source, and send the first control signal to boosting charge-discharge circuit, thus make charge in batteries.
Such as, in the utility model one embodiment, the charging port of portable power source is USB charging port.At USB charging port, place is provided with charging insertion detection circuit.When the insertion detection circuit that charges detect the voltage of USB charging port be the duration of 5V be greater than 1s time, can judge currently have the power supply of peripheral hardware and portable power source to couple.Charging insertion detection circuit inserts test side transmission high level signal to the charging of master controller.After master control receives the high level signal of charging insertion detection circuit transmission, send the first control signal to boosting charge-discharge circuit, make the charge in batteries coupled with the charge-discharge circuit that boosts.
When detecting that the output port of portable power source exists load, namely there is load circuit when being linked into the output port of portable power source in current time, master controller generates the second control signal, and sends the second control signal by the second control end to boosting charge-discharge circuit.Boosting charge-discharge circuit, according to the second control signal, performs and operates accordingly, makes storage battery export the voltage of preset voltage value.
In the utility model embodiment, load detection circuit for access can be set at the output port place of portable power source.When detecting that output port has load circuit to access, feedback signal can be sent to the load access test side of master controller, such as, the load access test side to master controller sends low level signal, and main controller is known currently has load circuit to be linked into portable power source.Master controller sends the second control signal to boosting charge-discharge circuit, makes storage battery export the voltage of preset voltage value.
In the utility model embodiment, boosting charge-discharge circuit can comprise two metal-oxide-semiconductors, and one of them is NOMS pipe, and another is PMOS.Two metal-oxide-semiconductors can be on a single die integrated, such as, is integrated on the chip of a double-field effect pipe, also can be two independently metal-oxide-semiconductors.
The grid of PMOS and the first control end of master controller couple, and receive the first control signal that master controller is exported by the first control end; The output channel of source electrode and portable power source couples; Drain electrode couples with the positive pole of storage battery.PMOS conducting when receiving the first control signal that master controller sends.
The grid of NMOS tube and the second control end of master controller couple, and receive the second control signal that master controller is exported by the second control end; Source electrode with couple; Drain electrode couples with the positive pole of storage battery.NMOS tube receive master controller send the second control signal time conducting.
In the utility model one embodiment, with reference to Fig. 1, give the charge-discharge circuit of the one boosting in the utility model embodiment, with reference to Fig. 2, give the pin distribution map of a kind of master controller in the utility model one embodiment.Composition graphs 1 and Fig. 2, be described the boosting charge-discharge circuit in the utility model embodiment below.
In Fig. 1, PMOS and NMOS tube are integrated on a two metal-oxide-semiconductor chip Q1, wherein, the pin 1 of Q1 is the source electrode of NMOS tube, pin 2 is the grid of NOMS pipe, and pin 3 is the source electrode of PMOS, and pin 4 is the grid of PMOS, pin 5 and pin 6 are the drain electrode of PMOS, and pin 7 and pin 8 are the drain electrode of NMOS tube.
The grid of PMOS and first control end (PWMP, the pin 8 with reference in Fig. 2) of master controller couple, and the grid of NMOS tube and second control end (PWMN, the pin 9 with reference in Fig. 2) of master controller couple.The first control signal that master controller generates is a PWM ripple, and the second control signal is the 2nd PWM ripple, and a PWM ripple and the 2nd PWM ripple mutual symmetry.
When detecting that the charging port of portable power source exists voltage input, when namely having the power supply of peripheral hardware to charge to portable power source, master controller is waken up, and generates a PWM ripple, and is sent to PMOS by the first control end PWMP.The grid of PMOS receives conducting after a PWM ripple.Because the drain electrode of PMOS pipe and the positive pole of storage battery couple, therefore form loop between PMOS and storage battery, storage battery starts charging.
When detecting that the output port of portable power source exists load circuit access, when namely having the load circuit of peripheral hardware to be linked into portable power source, master controller is waken up, and generates the 2nd PWM ripple, and is sent to NMOS tube by the second control end PWMN.The grid of NMOS tube receives conducting after the 2nd PWM ripple.Because the drain electrode of NMOS tube and the positive pole of storage battery couple, therefore form loop between NMOS tube and storage battery, storage battery is with the magnitude of voltage preset electric discharge.
In the utility model one embodiment, between storage battery and the drain electrode of PMOS, be provided with the first inductance L 1 and the first filter capacitor C01, the first end of the first inductance L 1 and the positive pole B+ of storage battery couple, and the drain electrode of the second end and PMOS couples.The first end of the first filter capacitor C01 and the positive pole of storage battery couple, the second end with couple.The inductance value of the first inductance L 1 can be 4.7 μ H, and the capacitance of the first filter capacitor C01 can be 22 μ F.In actual applications, the inductance value of the first inductance L 1 is relevant to the dominant frequency of the PWM wave frequency that master controller exports and master controller, and for different master controllers, the inductance value of the first inductance L 1 can be different.
When master controller sends a PWM ripple control PMOS conducting by the first control end to PMOS, or when sending the 2nd PWM ripple control NMOS tube conducting by the second control end to NOMS pipe, the rapid switch of metal-oxide-semiconductor may cause the noise of PWM ripple along comparatively steep, there is comparatively large radiation.
Therefore, in the utility model one embodiment, boosting charge-discharge circuit can also comprise the first switch resistance R11 and second switch resistance R12, first switch resistance R11 and second switch resistance R12 role are all the switching speeds delaying metal-oxide-semiconductor, wherein: the first switch resistance R11 role is the switching speed delaying PMOS, second switch resistance R12 role is the switching speed delaying NMOS tube.By delaying the switching speed of NMOS tube and PMOS, the radiation intensification that NMOS tube and switching pmos excessive velocities cause can be avoided.
The first end of the first switch resistance R11 and the grid of PMOS couple, the first control end PWMP (pin 8 see in Fig. 2) of the second end and master controller couples, and namely the first switch resistance R11 is connected between PMOS and the first control end PWMP of master controller.The first end of second switch resistance R12 and the grid of NMOS tube couple, the second control end PWMN (pin 9 see in Fig. 2) of the second end and master controller couples, and namely second switch resistance R12 is connected between NMOS tube and the second control end PWMN of master control.
In the utility model one embodiment, the first switch resistance R11 and second switch resistance R12 is Chip-R, and the first switch resistance R11 is equal with the resistance of second switch resistance R12, is 4.7 ohm.In other embodiments of the utility model, first switch resistance R11 and second switch resistance R12 also can be the resistance of other types, resistance can be also other values, does not limit herein, can select the switch resistance of corresponding types and the resistance of correspondence according to actual needs.
In the utility model one embodiment, the first discharge resistance R21 is provided with between the grid and the output channel (5VOut) of portable power source of PMOS, by the first discharge resistance R21, make to form loop between PMOS and storage battery, to ensure that PMOS disconnects reliably.Between the grid and source electrode of NMOS tube, be provided with the second discharge resistance R22, by the second discharge resistance R22, make to form loop between NMOS tube and storage battery, to ensure that NMOS tube disconnects reliably.In the utility model one embodiment, the resistance of the first discharge resistance R21 can be 10k ohm, and the resistance of the second discharge resistance R22 can be 10k ohm.
In the utility model one embodiment, can also arrange shunt diode D1 on the output channel of portable power source, the anode of shunt diode D1 and the positive pole B+ of storage battery couple, and the output channel (5VOut) of negative electrode and portable power source couples.
In the utility model one embodiment, with reference to Fig. 3, give the insertion detection circuit of the one charging in the utility model embodiment.USB1 is the micro USB charging port of portable power source, comprise VBUS end, D+ end, D-end, ID end and GND end, GND end with ground couple, ID end be dead circuit.Charging insertion detection circuit is arranged on the USB1 place of portable power source, detects that VBUS holds and has voltage to access at charging insertion detection circuit, and when the duration that magnitude of voltage is greater than certain value is greater than preset value, is determined with the charging port of plant-grid connection to portable power source of peripheral hardware.
With reference to Fig. 2 and Fig. 3, charging insertion detection circuit comprises the first divider resistance R31, the second divider resistance R32.The first end of the first divider resistance R31 and the VBUS of USB1 hold and couple, and the charging of the second end and master controller is inserted test side (Charge Vin, see pin in Fig. 2 14) and coupled.The first end of the second divider resistance R32 inserts test side Charge Vin with charging and couples, the second end and couple.The resistance of the first divider resistance R31 can be 2k ohm, and the resistance of the second divider resistance R32 is can 10k ohm.
Such as, when voltage access VBUS end having 5V being detected, the current charging port having external power to be linked into portable power source is judged.Now, there is pressure drop between the first end of the first divider resistance R31 and the second end, the level making the charging of main controller insert test side (Charge Vin) becomes high level from low level, thus wakes master controller up.Master controller configuration portable power source is in charge mode, a PWM ripple is sent to the PMOS in boosting charge-discharge circuit by the first control end PWMP (see Fig. 2 pin 8), control PMOS conducting, thus make the charge in batteries in portable power source.
In the utility model one embodiment, charging insertion detection circuit can couple with boost feedback circuit, by boost feedback circuit to master controller feed back input to the charging voltage of portable power source.Between charging insertion detection circuit and boost feedback circuit, dividing potential drop diode D2 can be provided with.
In the utility model one embodiment, boost feedback circuit comprises the 3rd divider resistance R33 and the 4th divider resistance R34, the first end of the 3rd divider resistance R33 and the VBUS of USB1 hold and couple, the charging/discharging voltage test side (Vol5V, the pin 13 see in Fig. 2) of the second end and master controller couples.The first end of the 4th divider resistance R34 and the charging/discharging voltage test side (Vol5V) of master controller couple, second end with couple, the voltage on Real-time Obtaining the 4th divider resistance R34 is detected in the charging/discharging voltage test side (Vol5V) of master controller.The resistance of the 3rd divider resistance R33 can be 180k ohm, and the resistance on the 4th divider resistance R34 can be 100k ohm.
In the utility model one embodiment, second end of the 4th divider resistance R34 also can with the control of master controller hold (CtlGND, the pin 11 see in Fig. 2) to couple, can power consumption be reduced.
In the utility model embodiment, boost feedback circuit can also couple with the output channel of portable power source (5VOut), be suitable for when battery discharging, master controller is detected in real time by charging/discharging voltage test side (Vol5V) discharge voltage to storage battery.
In the utility model embodiment, portable power source can also comprise battery voltage detection circuit, battery voltage detection end (the BTV of battery voltage detection circuit and master controller, pin 12 see in Fig. 2) couple, be suitable for the current voltage value of Real-time Obtaining storage battery, and the current voltage value of storage battery is sent to the battery voltage detection end (BTV) of master controller, make main controller know the current voltage value of storage battery.
In the utility model embodiment, with reference to Fig. 2 and Fig. 3, battery voltage detection circuit can comprise: the 5th divider resistance R35, and the first end of the 5th divider resistance R35 and the positive pole B+ of storage battery couple; 6th divider resistance R36, second end of first end and the 5th divider resistance R35 couples, the second end with couple; The first end of the first filter resistance R41 and second end of the 5th divider resistance R35 couple, and the battery voltage detection end (BTV) of the second end and master controller couples; The first end of the second filter capacitor C02 and second end of the first filter resistance R41 couple, the second end with couple.First filter resistance R41 and the second filter capacitor C02 forms RC filter circuit, after carrying out filtering, is sent to the battery voltage detection end (BTV) of master controller to the current voltage signal of storage battery.
The resistance of the 5th divider resistance R35 is 180k ohm, and the resistance of the 6th divider resistance R36 is 100k ohm, and the resistance of the first filter resistance R41 is 1k ohm, and the capacitance of the second filter capacitor C02 is 104 μ F.
In the utility model one embodiment, second end of the second filter capacitor C02 and second end of the 6th divider resistance R36 can with the control of master controller hold (CtlGND) to couple.
In the utility model embodiment, the 5th divider resistance R35, the 6th divider resistance R36, the 3rd divider resistance R33 and the 4th divider resistance R34 can be all precision resistance, and precision is less than 1%.
Whether in the utility model one embodiment, can arrange load detection circuit for access at the output port place of portable power source, being suitable for detecting has load to be linked into portable power source.When there being load to be linked in portable power source, portable power source is load circuit charging by output port.
In the utility model embodiment, the output port of portable power source is USB output port.The first end of load detection circuit for access and the GND of USB output port hold and couple, and the load of the second end and master controller accesses test side (PinHalt, the pin 14 see in Fig. 2) and couples.When there being load to access, load detection circuit for access sends feedback signal to master controller, and such as, send low level signal, main controller is known currently has load to access.Master controller produces the 2nd PWM ripple, and send the 2nd PWM ripple by the second control end PWMN to the NMOS tube in boosting charge-discharge circuit, make NMOS tube conducting, because the drain electrode of NMOS tube and the positive pole of storage battery couple, therefore can make battery discharging, export the voltage of preset voltage value.
With reference to Fig. 4, in the utility model one embodiment, the output port of portable power source comprises USB2 and USB3, USB2 and USB3 includes VBUS end, D+ end, D-end and GND end, and VBUS end all couples with the output channel (5VOut) of portable power source.Be understandable that, in other embodiments of the utility model, the output port of portable power source also can only include USB2, can also comprise more USB interface.
Load detection circuit for access comprises the first driving resistance R51, second and drives resistance R52 and the first NPN transistor Q3.Wherein, the collector electrode of the first NPN transistor Q3 and the load of master controller access test side (PinHalt) and couple, emitter with couple; First drives the first end of resistance R51 and the GND of output interface to hold couples, and the base stage of the second end and the first NPN transistor Q3 couples; Second drives the first end of resistance R52 and the base stage of the first NPN transistor Q3 to couple, and the emitter of the second end and the first NPN transistor Q3 couples.The resistance of the first driving resistance R51 can be 4.7k ohm, and the resistance of the second driving resistance R52 can be 10k ohm.
In the utility model embodiment, the operation principle of load detection circuit for access can be described below: when accessing load in output interface USB2 or USB3, storage battery makes the first NPN transistor Q3 conducting by the internal resistance of cell, the level of load access test side (PinHalt) on master controller becomes low level from high level, thus main controller is known currently there is load and be linked into output interface.Master controller produces the second control signal, i.e. the 2nd PWM ripple, by PWMN pin, the 2nd PWM ripple is sent to the NMOS tube of boosting charge-discharge circuit, makes NMOS tube conducting, thus realize the electric discharge of storage battery.
In the utility model embodiment, in portable power source, electric discharge enable circuits can also be set, master controller to boosting charge-discharge circuit NMOS tube send the second control signal time, by the Enable Pin (BoostEN of master controller, pin 3 with reference in Fig. 2) send enable signal, make the conducting of electric discharge enable circuits, thus produce discharge loop.The electric discharge first end of enable circuits and the GND of output port hold and couple, and the Enable Pin of the second end and master controller couples.When master controller detects that the level of load access test side becomes low level from high level, send enable switch signal by Enable Pin, make the conducting of electric discharge enable circuits, produce discharge loop.
With reference to Fig. 4, in the utility model one embodiment, electric discharge enable circuits is made up of field effect transistor Q2 and the 3rd discharge resistance R23, and field effect transistor is two metal-oxide-semiconductor chip Q2.The GND of two drain electrode of metal-oxide-semiconductor chip Q2 and the output port of portable power source holds and couples, and the Enable Pin (BoostEN) of grid and master controller couples, the conducting when receiving the enable switch signal that master controller sends.The first end of the 3rd discharge resistance R23 couples with the grid of two metal-oxide-semiconductor chip Q2, the second end with couple.
In the utility model embodiment, can also load current detection circuit be set, couples with electric discharge enable circuits, be suitable for obtaining portable power source and be input to electric current in load, the discharging current that also namely portable power source is current.
In the utility model one embodiment, with reference to Fig. 4, load current detection circuit comprises: sampling resistor R60, the second filter resistance R42 and the 3rd filter capacitor C03.Wherein: the source electrode of the first end of sampling resistor R60 and the first end of the second filter resistance R42 and two metal-oxide-semiconductor chip Q2 couples, the second end with couple.The first end of the second filter resistance R42 couples with the source electrode of two metal-oxide-semiconductor chip Q2, and the load current detection end (Load Current, the pin 15 with reference in Fig. 2) of the second end and master controller couples.The first end of the 3rd filter capacitor C03 and load current detection end (Load Current) couple, the second end with couple.
The resistance of sampling resistor R60 can be 0.05 ohm, and the resistance of the second filter resistance R42 can be 1k ohm, and the capacitance of the 3rd filter capacitor C03 can be 104 μ F.
Composition graphs 1 ~ 4, is described in detail to the workflow of the portable power source provided in the utility model above-described embodiment below.
When portable power source charges, when charging insertion detection circuit detects and USB1 has 5V voltage to input, the charging of master controller is inserted test side (Charge Vin) and is changed high level into by low level.Master controller detects that the change in voltage of test side (Charge Vin) is inserted in charging, produces a PWM ripple, is sent to the grid of the PMOS of boosting charge-discharge circuit by the first control end (PWMP).PMOS receives conducting after a PWM ripple, and forms loop between storage battery, makes charge in batteries.
When portable power source discharges, when USB2 or USB3 accessing load, the internal resistance of storage battery changes, and makes the first NPN transistor conducting of load detection circuit for access, and load access test side (PinHalt) of master controller changes low level into from high level.Master controller, when detecting that the level of load detection circuit for access (PinHalt) changes, generates the 2nd PWM ripple, and is sent by the NMOS tube of the second control end (PWMN) to boosting charge-discharge circuit.Conducting when NMOS tube receives the 2nd PWM ripple, forms loop with storage battery, makes battery discharging.
Particularly, when master controller detects that the level of load access test side (PinHalt) changes, generate enable switch signal, and sent to electric discharge enable circuits by Enable Pin (BoostEN).Electric discharge enable circuits receives conducting after enable switch signal, thus forms discharge loop.
In discharge process, master controller detects the output current at output port place in real time by load current detection end (Load Current), detected the current voltage of battery by battery voltage detection end (BTV) in real time, detected in real time by charging/discharging voltage test side (Vol5V) discharge voltage to storage battery.
In the utility model embodiment, portable power source can also comprise battery protecting circuit.With reference to Fig. 5, in the utility model one embodiment, the charging current test side (Charge Current, the pin 10 with reference in Fig. 2) of battery protecting circuit and master controller couples, and comprising: the 3rd filter resistance R43 and the 4th filter capacitor C04; 4th filter resistance R44 and the 5th filter capacitor C05; Lithium electric protection chip U2 and two binary channels metal-oxide-semiconductor U3 and U4.
Wherein, the first end of the 4th filter capacitor C04 and charging current test side (Charge Current) couple, the second end with couple.First end and charging current test side (ChargeCurrent) of the 3rd filter resistance R43 couple, the negative pole B-of the second end and storage battery couples, 4th filter capacitor C04 and the 3rd filter resistance R43 forms low pass filter, carries out filtering process to the signal of charging test side input.The resistance of the 3rd filter resistance R43 is 1k ohm, and the capacitance of the 4th filter capacitor C04 is 104 μ F.
The first end of the 4th filter resistance R44 and the positive pole B+ of storage battery couple, and the pin 5 of the second end and lithium electric protection chip U2 couples.The first end of the 5th filter capacitor C05 and second end of the 4th filter resistance R44 couple, and the negative pole B-of the second end and storage battery couples, and the pin 5 of lithium electric protection chip U2 is VCC end.The resistance of the 4th filter resistance R44 is 100 ohm, and the capacitance of the 5th filter capacitor C05 is 104 μ F.
The model of the lithium electric protection chip U2 adopted in the utility model one embodiment is DW01; there are 6 pins; wherein, pin 1 put control pin for discharging, and pin 2 is charging detection pin; pin 3 is for overcharging control pin; pin 4 is test pin, and pin 5 is VCC, and pin 6 is GND; pin 2 is coupled by resistance R21 and ground, and the negative pole B-of pin 6 and storage battery couples.The pin 1,3 of binary channels metal-oxide-semiconductor U3 is the source electrode of metal-oxide-semiconductor, and pin 2,5 is the drain electrode of metal-oxide-semiconductor, and pin 4,6 is the grid of metal-oxide-semiconductor, and the pin distribution of binary channels metal-oxide-semiconductor U4 with reference to binary channels metal-oxide-semiconductor U3, can not repeat herein.
The pin 1 of lithium electric protection chip U2 all couples with the pin 6 of binary channels metal-oxide-semiconductor U3, U4, and pin 3 all couples with the pin 4 of binary channels metal-oxide-semiconductor U3, U4.The pin 3 of binary channels metal-oxide-semiconductor U3, U4 all with couple, pin 1 all couples with the negative pole B-of storage battery, and pin 2 all couples with corresponding pin 5.
In the utility model one embodiment, portable power source can also comprise the electric quantity display circuit being suitable for showing battery electric quantity, comprises at least two LED.With reference to Fig. 3 and Fig. 6, the utility model one embodiment provides a kind of electric quantity display circuit 601, comprises four LED: L1, L2, L3 and L4.L1 and L2 is in parallel and couple with the LED1 pin (pin 2 see in Fig. 2) of master controller, L3 and L4 is in parallel and couple with the LED2 pin (pin 6 see in Fig. 2) of master controller, and master controller exports lighting or extinguishing of control signal control L1, L2, L3 and L4 respectively by pin 2,6,7.The pin 2,6,7 of master controller is PWM wave output terminal, by exporting lighting or extinguishing of PWM ripple control LED.
Can be multiplexing with portable power source switching circuit in battery power display circuit, be the switch key of electricity quantity inquiring with reference to Fig. 6, S1.The first end of S1 and the first end of pull down resistor R70 couple, and second end of the second end and current-limiting resistance R80 couples.Second end of pull down resistor R70 with couple, the first end of current-limiting resistance R80 is in parallel with L4.The resistance of current-limiting resistance R80 is 100 ohm, and the resistance of pull down resistor R70 is 1k ohm.
In the utility model embodiment, portable power source can also comprise electric torch circuit 603, electric torch circuit 603 couples with the Light pin (pin 5 with reference in Fig. 2) of master controller, and master controller is transmitted control signal to electric torch circuit 603 by Light pin.Electric torch circuit 603 can comprise the first base resistance R91, the second NPN transistor Q4, the first current-limiting resistance R81 and L5.Wherein, the first end of the first base resistance R91 and the Light pin of master controller couple, and the base stage of the second end and NPN transistor Q4 couples.The emitter of NPN transistor Q4 with couple, the first end of collector electrode and the first current-limiting resistance R81 couples.Second end of the first current-limiting resistance R81 and the first end of L5 couple, and second end of L5 and the positive pole B+ of storage battery couple.The resistance of the first current-limiting resistance R81 is 100 ohm.The resistance of the first base resistance R91 is 4.7k ohm.
With reference to Fig. 6, in the utility model one embodiment, portable power source also comprises and fills control circuit 602 soon, fills control circuit 602 soon and couples with the Enable Pin (BoostEN) of master controller.Fill charging circuit 602 soon to comprise: the second base resistance R92 that first end and master controller Enable Pin couple, second end of the second base resistance R92 and the base stage of NPN transistor Q5 couple.The emitter of NPN transistor Q5 with couple, collector electrode and resistor network couple.
Resistor network is made up of resistance R101, R102, R103, R104, and wherein, the first end of resistance R101 and the output port of portable power source couple, and the D-of the output port of the second end and portable power source holds and couples; The D-of the first end of resistance R103 and the output port of portable power source holds and couples, and the collector electrode of the second end and NPN transistor Q5 couples; The first end of resistance R102 and the output port of portable power source couple, and the D+ of the output port of the second end and portable power source holds and couples; The D+ of the first end of resistance R104 and the output port of portable power source holds and couples, and the collector electrode of the second end and NPN transistor Q5 couples.
The resistance of resistance R92 is 4.7k ohm, and the resistance of resistance R101 is 29.4k ohm, and the resistance of resistance R102 is 75k ohm, and the resistance of resistance R103 is 34.8k ohm, and the resistance of resistance R104 is 49.9k ohm.
As can be seen here, test side is inserted in the charging of charge insertion detection circuit and master controller couple, the voltage detecting end of boost feedback circuit and master controller is coupled, the battery voltage detection end of battery voltage detection circuit and master controller is coupled, the load of load detection circuit for access and master controller is accessed test side couple, the Enable Pin of electric discharge enable circuits and master controller is coupled, the load current detection end of load current detection circuit and master controller is coupled, the charging current test side of charge protector and master controller is coupled, each functional circuit of portable power source and master controller are coupled, make full use of each input/output port of master controller, compared to existing portable power source, the maximization of master controller utilance can be realized.
For the portable power source that the utility model above-described embodiment provides, the utility model embodiment still provides a kind of control method of portable power source system.
In advance according to each program in portable power source software control system to the demand of response time, the procedure division in main system is become the first responder, the second responder, the 3rd responder and the 4th responder.Wherein, the requirement of the first responder to the response time is the highest, and the requirement of the second responder to the response time is taken second place, and the 4th requirement of responder to the response time is minimum.
Wherein, the first responder detects in real time, and the response time that the second responder is corresponding is 250 μ s, and the response time that the 3rd responder is corresponding is 5ms, and the response time that the 4th responder is corresponding is 125ms.The response time of the first responder, the second responder, the 3rd responder and the 4th responder can also be other values, does not repeat herein.
In the utility model embodiment, first responder can comprise voltage and overcharge handling procedure, and when voltage overcharges handling procedure for preventing the load of portable power source larger, the voltage caused of extracting suddenly of load overcharges, need to detect in real time, be damaged to avoid portable power source.
Second responder can comprise: display driver subprogram, voltage sample subprogram, current sample subprogram and load intron program, and wherein, response time corresponding to each program is 250 μ s.
Display driver subprogram is mainly used in LED and the button of dynamic scan portable power source, and the interval time of scanning generally arranges shorter, because longer meeting interval time of scanning causes LED scintillation comparatively serious, the interval time of general scanning can be 1ms.
Voltage sample subprogram is mainly used in the magnitude of voltage of sample battery and the output voltage values of storage battery, and the sampling period also can be set to 1ms, after continuous sampling 16 times, averages as the magnitude of voltage of storage battery and the output voltage values of storage battery.
Current sample subprogram is mainly used in adopting the charging current value of storage battery and load discharge current value, and the sampling period also can be set to 1ms, after continuous sampling 16 times, averages as the charging current value of storage battery and load discharge current value.
Load is inserted detection subprogram and is mainly used in the insertion automatically detecting portable power source load, when detecting that load is inserted, wake master controller up, then by main controller controls boost charge current lead-through, to be embodied as load circuit charging, the cycle of detection also can be set to 1ms.
In the utility model embodiment, the 3rd responder can comprise: state detection subprogram, Charge Management subprogram, load detecting subprogram and Boost Control Subroutines, and wherein, response time corresponding to each program is 5ms.
State detection subprogram is inserted mainly for detection of charger, when detecting that charger inserts, controlling master controller and charging to portable power source.
Charge Management subprogram, is mainly used in the size controlling charging current according to the size of battery tension, when the magnitude of voltage of storage battery is less than the first preset value, to storage battery trickle charge; When the magnitude of voltage of storage battery is between the first preset value and the second preset value, to storage battery constant current charge; When the magnitude of voltage of storage battery is greater than the second preset value, to storage battery constant voltage charge, the first preset value is less than the second preset value.
Such as, the first preset value is 3V, and the second preset value is 4.1V.Then when the magnitude of voltage of storage battery is less than 3V, to storage battery trickle charge; When the magnitude of voltage of storage battery is between 3V ~ 4.1V, to storage battery constant current charge; When the magnitude of voltage of storage battery is greater than 4.1V, to storage battery constant voltage charge.
Load detecting subprogram, is mainly used in the phenomenon judging whether to exist underload or overcurrent according to the size of load current, and takes to protect operation accordingly.Boost Control Subroutines is mainly used in the duty ratio adjusting a PWM ripple or the 2nd PWM ripple according to the output voltage of portable power source output port or output current, to keep the output voltage of portable power source output port for 5V.
In the utility model embodiment; 4th responder can comprise: charge protection subprogram, state processing subprogram, display data processing subprogram and dormancy electric quantity balancing process subprogram; wherein, the response time that each program is corresponding is 125ms.Wherein:
Charge protection subprogram there will not be mainly for the protection of the storage battery in portable power source and overcharges phenomenon; State processing main program is mainly used in the state of charge judging that storage battery is current; Graphics Processing subprogram main users is according to the data of different operating states change display; Dormancy electric quantity balancing process subprogram is mainly used in realizing product low-power consumption and electric quantity balancing.
With reference to Fig. 7, give a kind of portable power source system control method flow chart in the utility model embodiment.
Step S701, system initialization.
Step S702, judges whether the electric discharge flag bit of current portable power source is 1.
In the utility model one embodiment, the electric discharge flag bit of portable power source is 1 be expressed as current portable power source and be in discharge condition.When current portable power source is in discharge condition, perform step S703; When the electric discharge flag bit of current portable power source is 0, perform step S705.
Step S703, judges whether portable power source exists voltage and overcharge.
In the utility model one embodiment, portable power source exist voltage overcharge time, perform step S704; When there is not voltage and overcharging, perform step S705.
Step S704, overcharges handling procedure by voltage and to overcharge voltage and process.
Step S705, judges whether the response time of portable power source reaches 250 μ s.
In the utility model one embodiment, when the response time of portable power source reaches 250 μ s, perform step S706; When the response time of portable power source does not reach 250 μ s, re-execute step S702.
Step S706, performs the second responder.
In the utility model one embodiment, after the second responder is complete, perform step S707.
Step S707, judges whether the response time of portable power source reaches 5ms.
In the utility model one embodiment, when the response time of portable power source reaches 5ms, perform step S708; When the response time of portable power source is less than 5ms, re-execute step S702.
Step S708, performs the 3rd responder.
In the utility model one embodiment, after the 3rd responder is complete, perform step S709.
Step S709, judges whether the response time of portable power source reaches 125ms.
In the utility model one embodiment, when the response time of portable power source reaches 125ms, perform step S710; When the response time of portable power source is less than 125ms, re-execute step S702.
Step S710, performs the 4th responder.
In the utility model one embodiment, after the 4th responder is complete, re-execute step S702, thus can cycling be realized.
In the utility model embodiment, corresponding to the second responder, the 3rd responder and the 4th responder, be described during to perform the second responder.
In step S706, perform the second responder.Second responder comprises: display driver subprogram, voltage sample subprogram, current sample subprogram and load intron program.When execution the second responder, the order of display driver subprogram, voltage sample subprogram, current sample subprogram, load intron program can be performed successively.
In the utility model embodiment, after display driver subprogram is complete, directly can perform step S707, judge whether the response time of portable power source reaches 5ms and also can continue to perform voltage sample subprogram.That is, when execution the second responder, often during one of them subprogram complete, directly can perform step S707, and when the response time of portable power source reaches 5ms, direct execution step S708, and all the other subprograms in execution second responder need not be continued again, thus the time shared by program execution can be reduced.
Be understandable that, in the utility model embodiment, when execution the 3rd responder, with reference to operation during above-mentioned execution the second program, can not repeat herein.
One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment relevant hardware can be indicated by program, this program can be stored in a computer-readable recording medium, and storage medium can comprise: ROM, RAM, disk or CD etc.
Although the utility model discloses as above, the utility model is not defined in this.Any those skilled in the art, not departing from spirit and scope of the present utility model, all can make various changes or modifications, and therefore protection range of the present utility model should be as the criterion with claim limited range.
Claims (21)
1. a portable power source, is characterized in that, comprising: master controller, storage battery and boosting charge-discharge circuit, wherein:
Described master controller, is suitable for, when detecting that the charging port of described portable power source exists voltage input, sending the first control signal, described storage battery is charged through described boosting charge-discharge circuit to described boosting charge-discharge circuit; And, when detecting that the output port of described portable power source exists load, sending the second control signal to described boosting charge-discharge circuit, making described storage battery export preset voltage value through described boosting charge-discharge circuit;
Boosting charge-discharge circuit, couples with described master controller, comprising:
PMOS, first control end of grid and described master controller couples, and the output channel of source electrode and described portable power source couples, and drain electrode and described battery positive voltage couple, being suitable for the conducting when receiving the first control signal that described master controller sends, making described charge in batteries;
NMOS tube, second control end of grid and described master controller couples, source electrode with ground couple, drain electrode and described battery positive voltage couple, being suitable for the conducting when receiving the second control signal that described master controller sends, making described storage battery with the magnitude of voltage preset electric discharge.
2. portable power source as claimed in claim 1, it is characterized in that, described boosting charge-discharge circuit also comprises:
First switch resistance, is connected between the first control end of described master controller and the grid of described PMOS;
Second switch resistance, is connected between the second control end of described master controller and the grid of described NMOS tube.
3. portable power source as claimed in claim 2, it is characterized in that, described boosting charge-discharge circuit also comprises:
First inductance, is connected between the drain electrode of described PMOS and the positive pole of described storage battery;
First filter capacitor, first end and described first inductance couple, the second end with couple.
4. portable power source as claimed in claim 3, it is characterized in that, described boosting charge-discharge circuit also comprises:
First discharge resistance, the grid of first end and described PMOS couples, and the output channel of the second end and described portable power source couples;
Second discharge resistance, the grid of first end and described NMOS tube couples, and the source electrode of the second end and described NMOS tube couples.
5. portable power source as claimed in claim 1, it is characterized in that, also comprise: charging insertion detection circuit, be arranged on the charging port place of described portable power source, insert test side with the charging of described master controller to couple, be suitable for when detecting that the charging port of described portable power source exists voltage input, the charging to described master controller is inserted test side and is sent high level signal, makes described master controller send the first control signal to described boosting charge-discharge circuit.
6. portable power source as claimed in claim 5, it is characterized in that, described charging insertion detection circuit comprises:
First divider resistance, the VBUS of first end and described charging port holds and couples, and the charging of the second end and described master controller is inserted test side and coupled;
Second divider resistance, the GND of first end and described charging port holds and couples, and the charging test side of the second end and described master controller couples.
7. portable power source as claimed in claim 5, it is characterized in that, also comprise: boost feedback circuit, couple with described charging insertion detection circuit, and couple with the charging/discharging voltage test side of described master controller, be suitable for the voltage of charging port input described in Real-time Obtaining, and be sent to described master controller.
8. portable power source as claimed in claim 7, it is characterized in that, described boost feedback circuit comprises:
3rd divider resistance, the VBUS of first end and described charging port holds and couples, and the second end and described voltage detecting end couple;
4th divider resistance, first end and described voltage detecting end couple, and the control ground of the second end and described master controller is held and coupled.
9. portable power source as claimed in claim 1, it is characterized in that, also comprise: battery voltage detection circuit, couple with described battery positive voltage, and couple with the battery voltage detection end of described master controller, be suitable for the current voltage value of storage battery described in Real-time Obtaining, and the current voltage value of described storage battery is sent to described master controller.
10. portable power source as claimed in claim 9, it is characterized in that, described battery voltage detection circuit comprises: the 5th divider resistance, 6th divider resistance, first filter resistance and the second filter capacitor, the described first end of the 5th divider resistance and the positive pole of described storage battery couple, the first end of the second end and described first filter resistance and the first end of described 6th divider resistance couple, the first end of described first filter resistance and the first end of described second filter capacitor and described battery voltage detection end couple, second end of described second filter capacitor and the second end of described 6th divider resistance are all held with the control ground of described master controller and are coupled.
11. portable power sources as claimed in claim 1, it is characterized in that, also comprise: load detection circuit for access, hold with the GND of the output port of described portable power source and couple, and access test side with the load of described master controller and couple, being suitable for when detecting that described output port exists load, sending low level signal to described master controller, making described master controller send the second control signal to described boosting charge-discharge circuit.
12. portable power sources as claimed in claim 11, it is characterized in that, described load detection circuit for access comprises: first drives resistance, second to drive resistance and the first NPN transistor, described first drives the GND of the first end of resistance and the output port of described portable power source to hold couples, and the base stage of the second end and described first NPN transistor couples; Described second drives the first end of resistance and the base stage of described first NPN transistor to couple, the second end and couple; The collector electrode of described first NPN transistor and described load access test side and couple, emitter with couple.
13. portable power sources as claimed in claim 11, it is characterized in that, also comprise: electric discharge enable circuits, hold with the GND of the output port of described portable power source and couple, and couple with the Enable Pin of described master controller, being suitable for the conducting when receiving the enable signal that described controller sends, making described storage battery be described load supplying.
14. portable power sources as claimed in claim 13, it is characterized in that, described electric discharge enable circuits comprises:
Field effect transistor, drain electrode and the GND of described output port holds and couple, source electrode and couple, the first end of grid and the 3rd discharge resistance couples;
3rd discharge resistance, the second end with couple.
15. portable power sources as claimed in claim 14, it is characterized in that, described portable power source also comprises: load current detection circuit, couples with described electric discharge enable circuits, and couple with the load current detection end of described master controller, be suitable for obtaining the current discharging current of described portable power source.
16. portable power sources as claimed in claim 15, it is characterized in that, described load current detection circuit comprises: sampling resistor, the second filter resistance and the 3rd filter capacitor, the first end of described sampling resistor and the first end of described second filter resistance and the source electrode of described field effect transistor couple, the second end with couple; Second end and the described load current detection end of described second filter resistance couple; First end and the described load current detection end of described 3rd filter capacitor couple, the second end with couple.
17. portable power sources as claimed in claim 1, is characterized in that, also comprise: charge protector, couple with the charging current test side of described master controller, are suitable for providing charge protection to described portable power source.
18. portable power sources as claimed in claim 1, is characterized in that, also comprise: battery power display circuit, couple, be suitable for the current voltage value according to described storage battery with the LED control end preset in described master controller, the battery electric quantity value that display is corresponding.
19. portable power sources as claimed in claim 18, it is characterized in that, described battery power display circuit comprises: at least two LED, and described LED couples with the LED control end preset in corresponding master controller respectively.
20. portable power sources as claimed in claim 1, is characterized in that, also comprise: lighting circuit, and the Lighting control end that first end and described master controller are preset couples, and the positive pole of the second end and described storage battery couples.
21. portable power sources as claimed in claim 20, it is characterized in that, described lighting circuit comprises: the first base resistance, and first end and described Lighting control end couple, and the base stage of the second end and the second NPN transistor couples;
Second NPN transistor, emitter with couple, the first end of collector electrode and the first current-limiting resistance couples;
LED, first end and anode couple, and the second end and described first current-limiting resistance second end couple.
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|---|---|---|---|
| CN201520046401.0U CN204376473U (en) | 2015-01-22 | 2015-01-22 | Portable power source |
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| CN201520046401.0U CN204376473U (en) | 2015-01-22 | 2015-01-22 | Portable power source |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105098930A (en) * | 2015-09-18 | 2015-11-25 | 深圳市欣维信科技有限公司 | Display screen type mobile power supply capable of accurately displaying battery capacity and current |
| CN105490333A (en) * | 2015-12-18 | 2016-04-13 | 深圳市芯沃微电子有限公司 | Rapid charging control circuit for battery, adapter and mobile equipment |
| CN110391680A (en) * | 2018-04-23 | 2019-10-29 | 深圳市星磁科技有限公司 | Charging unit and charge control method |
-
2015
- 2015-01-22 CN CN201520046401.0U patent/CN204376473U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105098930A (en) * | 2015-09-18 | 2015-11-25 | 深圳市欣维信科技有限公司 | Display screen type mobile power supply capable of accurately displaying battery capacity and current |
| CN105490333A (en) * | 2015-12-18 | 2016-04-13 | 深圳市芯沃微电子有限公司 | Rapid charging control circuit for battery, adapter and mobile equipment |
| CN110391680A (en) * | 2018-04-23 | 2019-10-29 | 深圳市星磁科技有限公司 | Charging unit and charge control method |
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Address after: 200235 Shanghai city Xuhui District Longcao road Tianhua Information Technology Park Building No. 299 2A 5 Patentee after: SHANGHAI EASTSOFT MICROELECTRONICS CO., LTD. Address before: Longcao road 200235 Shanghai city Shanghai city Xuhui District Tianhua Information Technology Park Building No. 299 2A 5 Patentee before: Shanghai Hair Group Integated Circuit Co., Ltd. |