CN207184079U - A kind of portable power source circuit - Google Patents

A kind of portable power source circuit Download PDF

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Publication number
CN207184079U
CN207184079U CN201720685507.4U CN201720685507U CN207184079U CN 207184079 U CN207184079 U CN 207184079U CN 201720685507 U CN201720685507 U CN 201720685507U CN 207184079 U CN207184079 U CN 207184079U
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China
Prior art keywords
circuit
resistance
power source
portable power
negative pole
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CN201720685507.4U
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曾金辉
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SHENZHEN DBK ELECTRONICS CO Ltd
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SHENZHEN DBK ELECTRONICS CO Ltd
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Abstract

Portable power source technical field is the utility model is related to, especially a kind of portable power source circuit, provided with negative pole sample circuit and moves back load circuit, the negative pole sample circuit connects boost control circuit unit, single chip machine controlling circuit unit and moves back load circuit respectively;The load circuit that moves back connects output end OUT, earth terminal GND and negative pole sample circuit respectively, low current output can not be detected by efficiently solving existing portable power source, the portable power source that part can charge, which also substantially comes output length by software processing, ensures that load shutdown will not be moved back, and so extremely wastes quantity problem.

Description

A kind of portable power source circuit
Technical field
Portable power source technical field is the utility model is related to, especially a kind of portable power source circuit.
Background technology
Portable power source (Mobile Power Pack, MPP), is also charger baby, traveling charger etc..One kind collection power supply and Charge function can charge whenever and wherever possible in the portable charger of one to digital equipments such as mobile phone, tablet personal computers.Typically by Lithium cell (or dry cell, more rare) is used as charge storage unit, convenient to use.For portable power source, it has certain Emergency function, in the case of being unable to electric power storage in numerous digital electricity production sources, can be powered by some devices, allow digital product Reach the effect of normal work.
Most of portable power source product, which moves back, above existing market carries electric current in 100mA or so, it is impossible to which precisely detection 50mA is left Right low current, but some low current equipment (such as bluetooth) are easily moved back load and can not charged for a long time, the shifting that part can charge Dynamic power supply, which also substantially comes output length by software processing, ensures that load shutdown will not be moved back, and so extremely wastes electricity;And And single-chip microcomputer due to precision prevent flase drop will the voltage minimum that can sample in more than 0.003V.
In order to solve problem above, the utility model provides a kind of portable power source circuit, by sampling electricity provided with negative pole Road and load circuit is moved back, can accurately detect 50mA or so low current, can ensure that the fully charged load that can also move back automatically of low current is closed Machine power saving.
Utility model content
The technical problems to be solved in the utility model is:In order to which existing portable power source can not detect low current output, part The portable power source of energy charging, which also substantially comes output length by software processing, ensures that load shutdown will not be moved back, so extremely unrestrained Take quantity problem, the utility model provides a kind of portable power source circuit, single by provided with negative pole sample circuit and moving back load circuit Piece machine can sample a larger magnitude of voltage regardless of output end current, and monolithic function more accurately judges current value, Realize that portable power source can detect low current 50mA or so load connection, so as to continue for some time to allow low current Equipment is full of, and low current output can not be detected by efficiently solving existing portable power source, and the portable power source that part can charge is also basic On be that long come of output is ensured that load shutdown will not be moved back by software processing, so extremely waste quantity problem.
Technical scheme is used by the utility model solves its technical problem:
A kind of portable power source circuit, including charging control circuit unit, boost control circuit unit, single chip machine controlling circuit Unit and the battery core for charging, in addition to negative pole sample circuit and load circuit is moved back, the negative pole sample circuit connects respectively Boost control circuit unit, single chip machine controlling circuit unit and move back load circuit;It is described move back carry circuit connect respectively output end OUT, Earth terminal GND and negative pole sample circuit, the load circuit that moves back include resistance R1, resistance R2, resistance R3 and metal-oxide-semiconductor Q1, resistance R1 One end ground connection GND, the resistance R1 other end connects resistance R3, metal-oxide-semiconductor Q1 and resistance R2 respectively, and the resistance R3 other end connects Connect metal-oxide-semiconductor Q1 OUT-ICC-EN ends, the resistance R2 other end and metal-oxide-semiconductor Q1 one end difference common ground SGND and connection USBA output ends.
Specifically, the negative pole sample circuit includes resistance R57, resistance R59, electric capacity C26 and electric capacity C27, resistance R57 mono- End connection voltage 2.8V, the other end connect resistance R59 and electric capacity C26 respectively, and the resistance R59 other end connects electric capacity C27 respectively With ground connection SGND, wherein, electric capacity C26 and the C27 other end is grounded GND.
Specifically, the charging control circuit unit uses chip AP5056.
Specifically, the boost control circuit unit uses chip S8355.
Specifically, the single chip machine controlling circuit uses SN8P2711A.
Specifically, the battery core is polymer battery.
Specifically, the LDO chargers for voltage stabilizing are provided between the battery core and the single chip machine controlling circuit unit.
The beneficial effects of the utility model are:
(1) the utility model provides a kind of portable power source circuit, single by provided with negative pole sample circuit and moving back load circuit Piece machine can sample a larger magnitude of voltage regardless of output end current, and monolithic function more accurately judges current value, Realize that portable power source can detect low current 50mA or so load connection, so as to continue for some time to allow low current to set Standby to be full of, low current output can not be detected by efficiently solving existing portable power source, and the portable power source that part can charge is also substantially It is that long come of output is ensured that load shutdown will not be moved back by software processing, so extremely wastes quantity problem;
(2) charging control circuit unit uses chip AP5056, and boost control circuit unit uses chip S8355, monolithic Machine control circuit uses SN8P2711A, and cost is low, good reliability;
(3) battery core is polymer battery, and the polymerization degree of polymer battery of new generation is very high, so can accomplish face Product anyization and shape are arbitrarily changed, thin type.And the unit energy of polymer batteries carries than the unit energy of general lithium battery It is high by 50%;
(4) the LDO chargers for voltage stabilizing are provided between battery core and the single chip machine controlling circuit unit, single-chip microcomputer can be given Realize that voltage stabilizing is powered, securely and reliably.
Brief description of the drawings
The utility model is further illustrated with reference to the accompanying drawings and examples.
Fig. 1 is a kind of circuit diagram of portable power source circuit of the present utility model;
Fig. 2 is the circuit diagram of negative pole sample circuit of the present utility model;
Fig. 3 is the circuit diagram of the present utility model for moving back and carrying circuit.
Embodiment
The utility model is described in further detail presently in connection with accompanying drawing.These accompanying drawings are simplified schematic diagram, Only illustrate basic structure of the present utility model in a schematic way, therefore it only shows the composition relevant with the utility model.
Embodiment 1
Charging control circuit unit uses chip AP5056, and boost control circuit unit uses chip S8355, single-chip microcomputer control Circuit processed uses SN8P2711A, and battery core is polymer battery.
To realize that portable power source output can detect low current output, exported for a period of time when detecting that low current is to maintain The function of load is moved back again, and the utility model, to realize that portable power source output can detect low current output, works as inspection in output end increase Measure low current and be to maintain the function that load is moved back in a period of time output again, the utility model increases partial circuit, such as Fig. 2 in output end Shown in Fig. 3.
As shown in Figures 2 and 3, resistance R1 takes 0.04 Ω, resistance R2 to take 1 Ω, resistance R3 to take 100K Ω, resistance R57 to take 300K Ω, resistance R59 take 1K Ω, electric capacity C26 to take 0.1uF, electric capacity C27 to take 0.1uF.
A kind of portable power source circuit, including charging control circuit unit AP 5056, boost control circuit cell S 8355, list Piece machine control circuit cell S N8P2711A and the polymer battery for charging, battery core and the single chip machine controlling circuit list It is provided between first battery core and the single chip machine controlling circuit unit between the LDO chargers for voltage stabilizing provided with the LDO confessions for voltage stabilizing Electrical equipment, in addition to negative pole sample circuit and load circuit is moved back, negative pole sample circuit connects boost control circuit unit, single-chip microcomputer respectively Control circuit unit and move back load circuit;Move back load circuit and connect output end OUT, earth terminal GND and negative pole sample circuit respectively, move back load Circuit includes resistance R1, resistance R2, resistance R3 and metal-oxide-semiconductor Q1, resistance R1 one end ground connection GND, resistance R1 other end difference Resistance R3, metal-oxide-semiconductor Q1 and resistance R2, resistance the R3 other end connection metal-oxide-semiconductor Q1 OUT-ICC-EN ends are connected, resistance R2's Distinguish common ground SGND and connection USBA output ends in the other end and metal-oxide-semiconductor Q1 one end.
As preferable technical scheme, negative pole sample circuit includes resistance R57, resistance R59, electric capacity C26 and electric capacity C27, Resistance R57 one end connects voltage 2.8V, and the other end connects resistance R59 and electric capacity C26 respectively, and the resistance R59 other end connects respectively Electric capacity C27 and ground connection SGND are met, wherein, electric capacity C26 and the C27 other end is grounded GND.
For portable power source monolithic machine testing USBA in heavy-current discharge, OUT-ICC-EN is high level, and metal-oxide-semiconductor Q1 is in Conducting state, now Q1 connected again with R1 with the Ω of R2 shunt resistances about 0.01, negative pole all-in resistance is about in 0.05 Ω, single-chip microcomputer Voltage detecting on negative pole resistance is sampled by SGND-USB to export high current (such as output current is 2.4A, sampled voltage 0.05 Ω * 2.4A=0.12V).
For portable power source monolithic machine testing USBA in low discharging current, OUT-ICC-EN is low level, and metal-oxide-semiconductor Q1 is in Off-state, now R1 connected with R2, about in 1.04 Ω, single-chip microcomputer passes through SGND-USB and samples negative pole resistance negative pole resistance Upper larger voltage detecting output low current (such as output current is 0.05A, and sampled voltage is 0.05A*1.04 Ω=0.052V);It is small During current discharge, if according to conventional existing detection method, 0.05A*0.04 Ω=0.002V, this magnitude of voltage is too small, single Piece machine is difficult to sample accurate.
By negative pole sample circuit of the present utility model and load circuit is moved back, no matter output end current, single-chip microcomputer can A larger magnitude of voltage is sampled, monolithic function more accurately judges current value.So sample different electric currents and provide difference Processing mode, such as high current exceed certain setting value excessively stream, and low current is kept for a period of time move back load again less than certain setting value Shutdown.
Charging control circuit unit, boost control circuit unit and single chip machine controlling circuit unit in the utility model Circuit uses existing technology, is just no longer described in detail.
Using it is above-mentioned according to desirable embodiment of the present utility model as enlightenment, pass through above-mentioned description, related work people Member can carry out various changes and amendments in the range of without departing from this item utility model technological thought completely.This item is real The content being not limited to new technical scope on specification, it is necessary to which its technology is determined according to right Property scope.

Claims (7)

1. a kind of portable power source circuit, including charging control circuit unit, boost control circuit unit, single chip machine controlling circuit list Member and the battery core for charging, it is characterised in that:Also include negative pole sample circuit and move back load circuit, the negative pole sample circuit Boost control circuit unit, single chip machine controlling circuit unit are connected respectively and move back load circuit;It is described move back carry circuit connect respectively it is defeated Go out to hold OUT, earth terminal GND and negative pole sample circuit, the load circuit that moves back includes resistance R1, resistance R2, resistance R3 and metal-oxide-semiconductor Q1, resistance R1 one end ground connection GND, the resistance R1 other end connect resistance R3, metal-oxide-semiconductor Q1 and resistance R2 respectively, resistance R3's Other end connection metal-oxide-semiconductor Q1 OUT-ICC-EN ends, the resistance R2 other end and metal-oxide-semiconductor Q1 one end difference common ground SGND With connection USBA output ends.
A kind of 2. portable power source circuit according to claim 1, it is characterised in that:The negative pole sample circuit includes resistance R57, resistance R59, electric capacity C26 and electric capacity C27, resistance R57 one end connection voltage 2.8V, the other end connect respectively resistance R59 and Electric capacity C26, resistance the R59 other end connect electric capacity C27 and ground connection SGND respectively, wherein, electric capacity C26 and the C27 other end connects Ground GND.
A kind of 3. portable power source circuit according to claim 1, it is characterised in that:The charging control circuit unit uses Chip AP5056.
A kind of 4. portable power source circuit according to claim 1, it is characterised in that:The boost control circuit unit uses Chip S8355.
A kind of 5. portable power source circuit according to claim 1, it is characterised in that:The single chip machine controlling circuit uses SN8P2711A。
A kind of 6. portable power source circuit according to claim 1, it is characterised in that:The battery core is polymer battery.
A kind of 7. portable power source circuit according to claim 1, it is characterised in that:The battery core and the control of affiliated single-chip microcomputer The LDO chargers for voltage stabilizing are provided between circuit unit.
CN201720685507.4U 2017-06-13 2017-06-13 A kind of portable power source circuit Active CN207184079U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720685507.4U CN207184079U (en) 2017-06-13 2017-06-13 A kind of portable power source circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720685507.4U CN207184079U (en) 2017-06-13 2017-06-13 A kind of portable power source circuit

Publications (1)

Publication Number Publication Date
CN207184079U true CN207184079U (en) 2018-04-03

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109309399A (en) * 2018-11-13 2019-02-05 深圳市蓝禾技术有限公司 The charging method of mobile power source and mobile power source
CN111509799A (en) * 2020-04-17 2020-08-07 佛山职业技术学院 Mobile power supply small current mode control method, mobile power supply and storage medium

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109309399A (en) * 2018-11-13 2019-02-05 深圳市蓝禾技术有限公司 The charging method of mobile power source and mobile power source
CN109309399B (en) * 2018-11-13 2021-01-05 深圳市蓝禾技术有限公司 Mobile power supply and discharging method thereof
CN111509799A (en) * 2020-04-17 2020-08-07 佛山职业技术学院 Mobile power supply small current mode control method, mobile power supply and storage medium

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