CN207184079U - Mobile power supply circuit - Google Patents
Mobile power supply circuit Download PDFInfo
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- 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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- 239000004065 semiconductor Substances 0.000 claims description 14
- 229920000642 polymer Polymers 0.000 claims description 7
- 230000000087 stabilizing effect Effects 0.000 claims description 6
- 238000005070 sampling Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model relates to the technical field of mobile power supplies, in particular to a mobile power supply circuit, which is provided with a negative electrode sampling circuit and a load shedding circuit, wherein the negative electrode sampling circuit is respectively connected with a boosting control circuit unit, a singlechip control circuit unit and the load shedding circuit; the load shedding circuit is respectively connected with the output end OUT, the grounding end GND and the negative electrode sampling circuit, so that the problems that the existing mobile power supply cannot detect small current output, and part of the mobile power supply capable of being charged basically opens the output by software processing to ensure that the mobile power supply cannot be unloaded and shut down, and the electric quantity is extremely wasted are solved.
Description
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720685507.4U CN207184079U (en) | 2017-06-13 | 2017-06-13 | Mobile power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720685507.4U CN207184079U (en) | 2017-06-13 | 2017-06-13 | Mobile power supply circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207184079U true CN207184079U (en) | 2018-04-03 |
Family
ID=61734696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720685507.4U Active CN207184079U (en) | 2017-06-13 | 2017-06-13 | Mobile power supply circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207184079U (en) |
Cited By (3)
| 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 |
| CN111725870A (en) * | 2020-06-30 | 2020-09-29 | 深圳市华美兴泰科技股份有限公司 | Automatic light load reference algorithm and mobile power supply with small current detection |
-
2017
- 2017-06-13 CN CN201720685507.4U patent/CN207184079U/en active Active
Cited By (5)
| 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 |
| CN111509799B (en) * | 2020-04-17 | 2021-11-30 | 佛山职业技术学院 | Mobile power supply small current mode control method, mobile power supply and storage medium |
| CN111725870A (en) * | 2020-06-30 | 2020-09-29 | 深圳市华美兴泰科技股份有限公司 | Automatic light load reference algorithm and mobile power supply with small current detection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220826 Address after: 523000 No. 252, Zhangmutou section, Dongshen Road, Zhangmutou town, Dongguan City, Guangdong Province Patentee after: DONGGUAN DBK ENERGY TECHNOLOGY Co.,Ltd. Address before: 208-1, 308, 404-408, Building 3, No. 8, Qinghua Road, Zhucun, Fucheng Xincheng Community, Guanlan Street, Longhua New District, Shenzhen, Guangdong 518100, China Patentee before: SHENZHEN DBK ELECTRONICS Co.,Ltd. |
|
| TR01 | Transfer of patent right |