CN203933057U - A kind of portable multi-function portable power source - Google Patents

A kind of portable multi-function portable power source Download PDF

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Publication number
CN203933057U
CN203933057U CN201320896155.9U CN201320896155U CN203933057U CN 203933057 U CN203933057 U CN 203933057U CN 201320896155 U CN201320896155 U CN 201320896155U CN 203933057 U CN203933057 U CN 203933057U
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China
Prior art keywords
resistance
triode
circuit
semiconductor
oxide
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Expired - Fee Related
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CN201320896155.9U
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Chinese (zh)
Inventor
陈成章
于建新
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TIANJIN BOZHONG ELECTRONICS Co Ltd
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TIANJIN BOZHONG ELECTRONICS Co Ltd
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Expired - Fee Related legal-status Critical Current
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Abstract

The utility model discloses a kind of portable multi-function portable power source, comprising: battery charger, battery pack, MCU control circuit, testing circuit, battery protecting circuit; It is characterized in that: also comprise: USB overvoltage crowbar, discharge and recharge priority control circuit, Intelligent switching circuit; Wherein: the input terminal of described portable power source by USB overvoltage crowbar respectively with MCU control circuit, battery charger and discharge and recharge priority control circuit and be electrically connected; Described battery pack is electrically connected with the lead-out terminal of portable power source by testing circuit, and described battery protecting circuit is connected with battery pack, and described MCU control circuit is electrically connected with Intelligent switching circuit, battery pack and battery charger respectively.The utility model not only has the charging/discharging function of traditional portable power source, has the function of automatic switching, the function of function, LED light and laser pointer that priority discharges and recharges simultaneously.

Description

A kind of portable multi-function portable power source
Technical field
The utility model relates to portable power source technical field, particularly relates to a kind of portable multi-function portable power source.
Background technology
Along with popularizing of mobile electronic product, the charging problem of electronic product gets the attention, this has just impelled the generation of portable power source, for example the patent No. is: the Invention Announce of CN102593923A a kind of portable binary channels portable power source, there is the automatic identification circuit by the control of MCU control circuit, can automatically identify output end current value and select output current; There is DC-DC booster circuit, cell voltage can be risen to 5V burning voltage, continue to charge to load; Possess battery repairing function, can recover battery capacity, extending battery life; There is current detecting, the functions such as LED illumination simultaneously.But CN102593923A does not possess intelligent switch machine function, can not carry out charging and discharging intelligent decision charging priority simultaneously, in addition the safeguard protection of lithium battery is also only had to part protective circuit, there is the possibility that causes security incident.
Utility model content
The technical problems to be solved in the utility model is: a kind of portable multi-function portable power source is provided.
The technical scheme that the utility model is taked for the technical problem existing in solution known technology is:
A kind of portable multi-function portable power source, comprising: battery charger, battery pack, MCU control circuit, testing circuit, battery protecting circuit; It is characterized in that: also comprise: USB overvoltage crowbar, discharge and recharge priority control circuit, Intelligent switching circuit; Wherein: the input terminal of described portable power source by USB overvoltage crowbar respectively with MCU control circuit, battery charger and discharge and recharge priority control circuit and be electrically connected; Described battery pack is electrically connected with the lead-out terminal of portable power source by testing circuit, and described battery protecting circuit is connected with battery pack, and described MCU control circuit is electrically connected with Intelligent switching circuit, battery pack and battery charger respectively.
As optimal technical scheme, the utility model has also adopted following technical scheme:
Further: described USB overvoltage crowbar comprises: diode D1, triode Q1, triode Q2, triode Q4, metal-oxide-semiconductor Q3 and resistance R 1~R8.
Further: described in discharge and recharge priority control circuit and comprise: metal-oxide-semiconductor Q6, metal-oxide-semiconductor Q7, triode Q5 and resistance R 19~R21; Wherein: the base stage of triode Q5 is connected with resistance R 20, the grid of metal-oxide-semiconductor Q6 is connected with the collector electrode of triode Q5 by resistance R 19, the grid of metal-oxide-semiconductor Q7 is connected with the collector electrode of triode Q5 by resistance R 19, and the collector electrode of triode Q5 is connected with the source electrode of metal-oxide-semiconductor Q6, the source electrode of metal-oxide-semiconductor Q7 respectively by resistance R 19, resistance R 21 successively; The grounded emitter of triode Q5.
Further: described Intelligent switching circuit comprises triode Q11, triode Q12, triode Q8 and resistance R 48~R54; Wherein: the base stage of triode Q12 is electrically connected with the terminal that enables of MCU control circuit by resistance R 53; The base stage of triode Q12 is successively by resistance R 53, resistance R 54 ground connection; The base stage of triode Q11 is successively by resistance R 51, resistance R 50 ground connection; The base stage of triode Q11 is connected with the emitter of triode Q8 by resistance R 51, switch SW 1, resistance R 48 successively, and the base stage of described triode Q8 is electrically connected with the collector electrode of triode Q11, the collector electrode of triode Q12 respectively by resistance R 52.
Further: described MCU control circuit is the Flash type single-chip microcomputer with 8 high-performance reduced instruction set computers of analog-digital conversion function and HOLTEK low-power consumption framework.
Further: also comprise the LED display circuit being electrically connected with MCU control circuit, described LED display circuit comprises four light-emitting diodes, is in series with protective resistance at the anode tap of each light-emitting diode.
Further: also to comprise the indicating device circuit being electrically connected with MCU control circuit; Described indicating device circuit comprises LED electric torch circuit and laser pen circuit; Wherein: described LED electric torch circuit comprises light-emitting diode D12 and metal-oxide-semiconductor Q13, the anode of light-emitting diode D12 is connected with resistance R 63, the negative electrode of light-emitting diode D12 is connected with the drain electrode of metal-oxide-semiconductor Q13, the source ground of metal-oxide-semiconductor Q13, and the grid of metal-oxide-semiconductor Q13 is connected with resistance R 62; Described laser pen circuit comprises light-emitting diode D13 and metal-oxide-semiconductor Q14, the anode of light-emitting diode D13 is connected with resistance R 65, the negative electrode of light-emitting diode D13 is connected with the drain electrode of metal-oxide-semiconductor Q14, the source ground of metal-oxide-semiconductor Q14, and the grid of metal-oxide-semiconductor Q14 is connected with resistance R 64.
Advantage and the good effect that the utlity model has are:
One,, because the utility model has adopted Intelligent switching circuit, therefore, in the time having external equipment or input power and switch to press, there is the function of intelligence start; Meanwhile, in the time that portable power source is full of electricity or when external equipment is full of electricity or when misoperation, there is the function of Bye-byes;
Two, discharge and recharge priority control circuit by employing, therefore, in the time carrying out charging and discharging work, the utility model can be preferentially to external equipment charging and then reasonable distribution charging current simultaneously;
Three, by adopting technique scheme, the utility model not only has the function that traditional portable power source discharges and recharges, and has the function of LED light and laser pointer simultaneously.Therefore can meet multiple crowd's needs;
Four,, by adopting foregoing circuit, the utility model also has advantages of that standby current is little, overcurrent and overvoltage protection, low output ripple.
Brief description of the drawings
Fig. 1 is circuit block diagram of the present utility model;
Fig. 2 is partial circuit diagram of the present utility model, is mainly used in showing USB overvoltage crowbar;
Fig. 3 is partial circuit diagram of the present utility model, is mainly used in showing battery charger;
Fig. 4 is partial circuit diagram of the present utility model, is mainly used in showing MCU control circuit;
Fig. 5 is partial circuit diagram of the present utility model, is mainly used in showing discharging and recharging priority control circuit;
Fig. 6 is partial circuit diagram of the present utility model, is mainly used in showing testing circuit;
Fig. 7 is partial circuit diagram of the present utility model, is mainly used in showing battery protecting circuit;
Fig. 8 is partial circuit diagram of the present utility model, is mainly used in showing Intelligent switching circuit;
Fig. 9 is partial circuit diagram of the present utility model, is mainly used in showing LED display circuit;
Figure 10 is partial circuit diagram of the present utility model, is mainly used in showing indicating device circuit.
Wherein: 1, USB overvoltage crowbar; 2, battery charger; 3, battery pack; 4, MCU control circuit; 5, discharge and recharge priority control circuit; 6, testing circuit; 7, battery protecting circuit; 8, Intelligent switching circuit; 9, LED display circuit; 10, indicating device circuit.
Embodiment
For further understanding utility model content of the present utility model, Characteristic, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Refer to Fig. 1 to Figure 10, a kind of portable multi-function portable power source, comprising: USB overvoltage crowbar 1, battery charger 2, battery pack 3, MCU control circuit 4, discharge and recharge priority control circuit 5, testing circuit 6, battery protecting circuit 7, Intelligent switching circuit 8, LED display circuit 9 and indicating device circuit 10; Wherein: the input terminal (AC adapter interface or USB interface) of portable power source by USB overvoltage crowbar 1 respectively with MCU control circuit 4, battery charger 3 and discharge and recharge priority control circuit 5 and be electrically connected; Battery pack 3 is electrically connected with the lead-out terminal of portable power source by testing circuit 6, and battery protecting circuit 7 is connected with battery pack 3, and MCU control circuit 4 is electrically connected with Intelligent switching circuit 8, battery pack 3 and battery charger 2 respectively.
USB overvoltage crowbar 1 in above-mentioned specific embodiment comprises: diode D1, triode Q1, triode Q2, triode Q4, metal-oxide-semiconductor Q3 and resistance R 1~R8.When input voltage not conducting of diode D2 between 4.5V-5.25V; triode Q1 cut-off, the conducting of triode Q4 base stage input high level, the conducting of metal-oxide-semiconductor Q3 grid input low level; portable power source is in normal charging condition, and diode D1 can play voltage stabilizing and protective effect.When external voltage diode D2 conducting during higher than 5.25V, triode Q1 base stage becomes high level makes its conducting, and triode Q4 base stage input low level makes its cut-off cause metal-oxide-semiconductor Q3 cut-off, and charging disconnects, thereby plays the effect of USB overvoltage protection; In the time that above-mentioned protective circuit fault does not work; Vin point voltage continues to raise while exceeding 5.25V; MCU control circuit 4 detects Vin_SENSE abnormal signal; thereby will exporting high level, the VOP-C port of MCU control circuit 4 chip U2 make triode Q2 conducting make triode Q4, metal-oxide-semiconductor Q3 cut-off; charging process disconnects, thereby plays the effect of USB overvoltage protection.
Battery charger 2 in above-mentioned specific embodiment is mainly made up of large electric current lithium ion cell charging chip U1, the L6924U chip of the optional purpose method of chip U1 semiconductor production.Chip U1 has four kinds of basic charge modes in whole battery charging process: trickle charge, constant current charge, constant voltage charge and charging complete and recharge.Trickle charge: before charging starts, chip U1 first checks input power, when input power is greater than minimum or under-voltage locking threshold value, and chip U1 Enable Pin SD is while connecing low level, and chip U1 starts battery to charge.Chip U1 first checks the state of battery, if cell voltage higher than 3V, charger enters constant current charge; And if cell voltage is during lower than 3V, charger enters trickle charge pattern.Trickle-charge current is 1/10th of constant current charge electric current, and trickle charge state continues up to chip U1 chip and detects after cell voltage reaches 3V and finish, and enters afterwards the constant current charge stage.Constant current charge: after entering in constant current charging mode, to charge by the current value of setting always, this current value can be determined by the resistance R 11 being connected between (AC adapter pattern) resistance R 13 between pin Iac and ground or pin Iusb and ground (USB pattern), when battery slowly arrives voltage-regulation point 4.2V, then enter constant voltage charge.Constant voltage charge: in the time that cell voltage slowly approaches 4.2V, charger just transfers constant voltage charge gradually to.Now original constant current charge electric current also slowly reduces, and along with battery capacity more and more approaches heap(ed) capacity and sharply declines.Charge and recharged: be decreased to after Iendth when charging current is detected, charger has stopped, to battery charging, entering the standby mode of low-power consumption.This electric current can be determined by the resistance R 14 between pin Iend and ground.Under standby mode, chip U1 can continue to detect the voltage of battery-end, if cell voltage drops to below 4.05V, charger will charge to battery again.
As preferred embodiment, the priority control circuit 5 that discharges and recharges in above-mentioned specific embodiment comprises: metal-oxide-semiconductor Q6, metal-oxide-semiconductor Q7, triode Q5 and resistance R 19~R21; Wherein: the base stage of triode Q5 is connected with resistance (R20), the grid of metal-oxide-semiconductor Q6 is connected with the collector electrode of triode Q5 by resistance R 19, the grid of metal-oxide-semiconductor Q7 is connected with the collector electrode of triode Q5 by resistance R 19, and the collector electrode of triode Q5 is connected with the source electrode of metal-oxide-semiconductor Q6, the source electrode of metal-oxide-semiconductor Q7 respectively by resistance R 19, resistance R 21 successively; The grounded emitter of triode Q5.The chip U2 that this pattern occurs in MCU control circuit 4 detects when outside input power and external equipment access simultaneously, at this moment chip U2 sends signal the chip U3 in Fig. 2 chips U1, Fig. 6 is quit work, the high level of the Pass-through port of chip U2 output simultaneously makes triode Q5 conducting, thereby metal-oxide-semiconductor Q6, metal-oxide-semiconductor Q7 conducting, now directly charged to external equipment by outside input power, brought certain convenience to user.
As preferred embodiment, the testing circuit 6 in above-mentioned specific embodiment comprises the part of boosting, and the above-mentioned core parts chip U3 that boosts part is a step-up/down transducer, the TPS63020 chip that it adopts Texas Instruments to produce.In the time that ON/OFF is high level, chip U3 starts working, and chip U3 is elevated to after stable 5V battery pack 3 voltages to charging external equipment.This portable power source has two kinds of discharge modes: heavy-current discharge pattern, low discharging current pattern.In the time detecting that the required electric current of charging external equipment is larger, I-USB signal returns to chip U2, chip U2 makes I-chge terminal become high level simultaneously, metal-oxide-semiconductor Q10 conducting makes resistance R 40 in parallel with resistance R 26, this portable power source can, with the constant current of 2A to external equipment quick charge, be saved user's time; When the required electric current of charging external equipment being detected hour, I-chge terminal becomes low level, the independent place in circuit of metal-oxide-semiconductor Q9 off-resistances R26, and portable power source charges to external equipment with the constant current of 1A.Resistance R 38 is current sense resistor, in the time that resistance R 38 electric currents of flowing through are elevated to 2A, comparator U4B5 pin level is greater than 6 pin, 7 pin output high level make diode D3 conducting, feed back to chip U3 through FB pin, chip U3 reconciles output voltage and reduces, and discharging current is maintained to 2A, realizes real crossing current charging.If foregoing circuit dysfunction; when the resistance R of flowing through 38 electric currents are elevated to 2A continuation rising; comparator U4A1 amplifies this signal pass to chip U2 by I-USB signal; chip U2 makes ON/OFF pin output low level that chip U3 is turn-offed; stop discharge process, thereby play the effect of protection external equipment.
As preferred embodiment; battery protecting circuit 7 in above-mentioned specific embodiment; in charging process; in the time that the voltage of cell exceedes 4.25V; the OC pin output signal of the integrated circuit (IC) 2 control integration IC circuit 1 that makes to charge is turn-offed; battery pack stops charging immediately, thereby avoids battery to damage because of overcharge.In discharge process, in the time that the voltage of cell drops to 3V, the OD pin output signal of integrated circuit (IC) 2 is turn-offed control of discharge integrated circuit (IC) 1, and battery stops electric discharge immediately, thereby avoids battery to damage because of over-discharge.The CS pin of integrated circuit (IC) 2 is current detecting pin; when output short-circuit; the conduction voltage drop sharp increase CS pin voltage of charge-discharge control integrated circuit IC1 raises rapidly, and integrated circuit (IC) 2 output signals are turn-offed rapidly charge-discharge control integrated circuit IC1, thereby realize overcurrent or short-circuit protection.Resistance R 45 is thermistor; resistance raises and reduces with temperature; when battery temperature continues to raise; resistance R 45 resistances continue to reduce; cause THERM point voltage to change, chip U2 detects when THERM point voltage changes to set point, sends signal; portable power source quits work, and plays temperature protection effect.
As preferred embodiment, the Intelligent switching circuit 8 in above-mentioned specific embodiment comprises triode Q11, triode Q12, triode Q8 and resistance R 48~R54; Wherein: the base stage of triode Q12 is electrically connected with the terminal that enables of MCU control circuit by resistance R 53; The base stage of triode Q12 is successively by resistance R 53, resistance R 54 ground connection; The base stage of triode Q11 is successively by resistance R 51, resistance R 50 ground connection; The base stage of triode Q11 is connected with the emitter of triode Q8 by resistance R 51, switch SW 1, resistance R 48 successively, and the base stage of triode Q8 is electrically connected with the collector electrode of triode Q11, the collector electrode of triode Q12 respectively by resistance R 52.If portable power source is in closed condition, and while not connecting power supply and external equipment, user presses key and is greater than 100 milliseconds, triode Q11 turn-on transistor Q8 base stage input low level, triode Q8 conducting, battery pack 3 voltages are powered to chip U2 to 2.5V by integrated circuit (IC) 3 voltage stabilizings, chip U2 starts working, enable terminal EN pin output high level and make triode Q12 conducting, realize level locking state, switch SW 1 still can continue the power supply to chip U2 after disconnecting like this, makes portable power source start and shows electric weight; If portable power source detects and do not connect external equipment under holding state, after 30 seconds, will realize automatic shutdown; Under holding state, long by be greater than 2 seconds of key, portable power source should shut down.When detection have external equipment when access, Phl-Del terminal become low level at this moment triode Q9 conducting chip U2 start working, portable power source is realized Auto Power On and is started and charges to external equipment.Become high level when detecting charger when access Vin, start working portable power source Auto Power On start to charge to internal cell of chip U2; In the time that portable power source detects that external equipment is full of electricity or self battery electric quantity is too low and user occurs misoperation phenomenon in this product process of use, portable power source is using automatic shutdown as alarm.
As preferred embodiment, the MCU control circuit 4 in above-mentioned specific embodiment is the Flash type single-chip microcomputer with 8 high-performance reduced instruction set computers of analog-digital conversion function and HOLTEK low-power consumption framework.What chip U2 adopted is to close the HT45F23 chip that safe semiconductor (China) Co., Ltd produces.
As preferred embodiment; LED display circuit 9 in above-mentioned specific embodiment is electrically connected with MCU control circuit 4; LED display circuit 9 comprises four light-emitting diodes; above-mentioned four light-emitting diodes are respectively diode (LED)-1, diode (LED)-2, diode (LED)-3 and diode (LED)-4, are in series with protective resistance at the anode tap of each light-emitting diode.
As preferred embodiment, the indicating device circuit 10 in above-mentioned specific embodiment is electrically connected with MCU control circuit 4; Indicating device circuit 10 comprises LED electric torch circuit and laser pen circuit; Wherein: described LED electric torch circuit comprises light-emitting diode D12 and metal-oxide-semiconductor Q13, the anode of light-emitting diode D12 is connected with resistance R 63, the negative electrode of light-emitting diode D12 is connected with the drain electrode of metal-oxide-semiconductor Q13, the source ground of metal-oxide-semiconductor Q13, and the grid of metal-oxide-semiconductor Q13 is connected with resistance R 62; Described laser pen circuit comprises light-emitting diode D13 and metal-oxide-semiconductor Q14, the anode of light-emitting diode D13 is connected with resistance R 65, the negative electrode of light-emitting diode D13 is connected with the drain electrode of metal-oxide-semiconductor Q14, the source ground of metal-oxide-semiconductor Q14, and the grid of metal-oxide-semiconductor Q14 is connected with resistance R 64.
Above embodiment of the present utility model is had been described in detail, but described content is only preferred embodiment of the present utility model, can not be considered to for limiting practical range of the present utility model.All equalization variation and improvement etc. of doing according to the utility model application range, within all should still belonging to patent covering scope of the present utility model.

Claims (7)

1. a portable multi-function portable power source, comprising: battery charger, battery pack, MCU control circuit, testing circuit, battery protecting circuit; It is characterized in that: also comprise: USB overvoltage crowbar, discharge and recharge priority control circuit, Intelligent switching circuit; Wherein: the input terminal of described portable power source by USB overvoltage crowbar respectively with MCU control circuit, battery charger and discharge and recharge priority control circuit and be electrically connected; Described battery pack is electrically connected with the lead-out terminal of portable power source by testing circuit, and described battery protecting circuit is connected with battery pack, and described MCU control circuit is electrically connected with Intelligent switching circuit, battery pack and battery charger respectively.
2. portable multi-function portable power source according to claim 1, is characterized in that: described USB overvoltage crowbar comprises: diode D1, triode Q1, triode Q2, triode Q4, metal-oxide-semiconductor Q3 and resistance R 1~R8.
3. portable multi-function portable power source according to claim 1, is characterized in that: described in discharge and recharge priority control circuit and comprise: metal-oxide-semiconductor Q6, metal-oxide-semiconductor Q7, triode Q5 and resistance R 19~R21; Wherein: the base stage of triode Q5 is connected with resistance R 20, the grid of metal-oxide-semiconductor Q6 is connected with the collector electrode of triode Q5 by resistance R 19, the grid of metal-oxide-semiconductor Q7 is connected with the collector electrode of triode Q5 by resistance R 19, and the collector electrode of triode Q5 is connected with the source electrode of metal-oxide-semiconductor Q6, the source electrode of metal-oxide-semiconductor Q7 respectively by resistance R 19, resistance R 21 successively; The grounded emitter of triode Q5.
4. portable multi-function portable power source according to claim 3, is characterized in that: described Intelligent switching circuit comprises triode Q11, triode Q12, triode Q8 and resistance R 48~R54; Wherein: the base stage of triode Q12 is electrically connected with the terminal that enables of MCU control circuit by resistance R 53; The base stage of triode Q12 is successively by resistance R 53, resistance R 54 ground connection; The base stage of triode Q11 is successively by resistance R 51, resistance R 50 ground connection; The base stage of triode Q11 is connected with the emitter of triode Q8 by resistance R 51, switch SW 1, resistance R 48 successively, and the base stage of described triode Q8 is electrically connected with the collector electrode of triode Q11, the collector electrode of triode Q12 respectively by resistance R 52.
5. portable multi-function portable power source according to claim 4, is characterized in that: described MCU control circuit is the Flash type single-chip microcomputer with 8 high-performance reduced instruction set computers of analog-digital conversion function and HOLTEK low-power consumption framework.
6. according to the portable multi-function portable power source described in claim 1-5 any one; it is characterized in that: also comprise the LED display circuit being electrically connected with MCU control circuit; described LED display circuit comprises four light-emitting diodes, is in series with protective resistance at the anode tap of each light-emitting diode.
7. according to the portable multi-function portable power source described in claim 1-5 any one, it is characterized in that: also comprise the indicating device circuit being electrically connected with MCU control circuit; Described indicating device circuit comprises LED electric torch circuit and laser pen circuit; Wherein: described LED electric torch circuit comprises light-emitting diode D12 and metal-oxide-semiconductor Q13, the anode of light-emitting diode D12 is connected with resistance R 63, the negative electrode of light-emitting diode D12 is connected with the drain electrode of metal-oxide-semiconductor Q13, the source ground of metal-oxide-semiconductor Q13, and the grid of metal-oxide-semiconductor Q13 is connected with resistance R 62; Described laser pen circuit comprises light-emitting diode D13 and metal-oxide-semiconductor Q14, the anode of light-emitting diode D13 is connected with resistance R 65, the negative electrode of light-emitting diode D13 is connected with the drain electrode of metal-oxide-semiconductor Q14, the source ground of metal-oxide-semiconductor Q14, and the grid of metal-oxide-semiconductor Q14 is connected with resistance R 64.
CN201320896155.9U 2013-12-30 2013-12-30 A kind of portable multi-function portable power source Expired - Fee Related CN203933057U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104967191A (en) * 2015-07-28 2015-10-07 青岛歌尔声学科技有限公司 Charging circuit used for mobile power supply and mobile power supply

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104967191A (en) * 2015-07-28 2015-10-07 青岛歌尔声学科技有限公司 Charging circuit used for mobile power supply and mobile power supply
CN104967191B (en) * 2015-07-28 2017-03-29 青岛歌尔声学科技有限公司 For the charging circuit and portable power source of portable power source

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